fix ya.make

19 files changed, 14724 insertions, 0 deletions

diff --git a/contrib/libs/llvm12/tools/llvm-readobj/ARMEHABIPrinter.h b/contrib/libs/llvm12/tools/llvm-readobj/ARMEHABIPrinter.h
new file mode 100644
index 0000000000..3d8acbf48f
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/ARMEHABIPrinter.h
@@ -0,0 +1,647 @@
+//===--- ARMEHABIPrinter.h - ARM EHABI Unwind Information Printer ----------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_READOBJ_ARMEHABIPRINTER_H
+#define LLVM_TOOLS_LLVM_READOBJ_ARMEHABIPRINTER_H
+
+#include "llvm-readobj.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/Object/ELF.h"
+#include "llvm/Object/ELFTypes.h"
+#include "llvm/Support/ARMEHABI.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/type_traits.h"
+
+namespace llvm {
+namespace ARM {
+namespace EHABI {
+
+class OpcodeDecoder {
+  ScopedPrinter &SW;
+  raw_ostream &OS;
+
+  struct RingEntry {
+    uint8_t Mask;
+    uint8_t Value;
+    void (OpcodeDecoder::*Routine)(const uint8_t *Opcodes, unsigned &OI);
+  };
+  static ArrayRef<RingEntry> ring();
+
+  void Decode_00xxxxxx(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_01xxxxxx(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_1000iiii_iiiiiiii(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10011101(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10011111(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_1001nnnn(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10100nnn(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10101nnn(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10110000(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10110001_0000iiii(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10110010_uleb128(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10110011_sssscccc(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_101101nn(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_10111nnn(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_11000110_sssscccc(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_11000111_0000iiii(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_11001000_sssscccc(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_11001001_sssscccc(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_11001yyy(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_11000nnn(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_11010nnn(const uint8_t *Opcodes, unsigned &OI);
+  void Decode_11xxxyyy(const uint8_t *Opcodes, unsigned &OI);
+
+  void PrintGPR(uint16_t GPRMask);
+  void PrintRegisters(uint32_t Mask, StringRef Prefix);
+
+public:
+  OpcodeDecoder(ScopedPrinter &SW) : SW(SW), OS(SW.getOStream()) {}
+  void Decode(const uint8_t *Opcodes, off_t Offset, size_t Length);
+};
+
+inline ArrayRef<OpcodeDecoder::RingEntry> OpcodeDecoder::ring() {
+  static const OpcodeDecoder::RingEntry Ring[] = {
+      {0xc0, 0x00, &OpcodeDecoder::Decode_00xxxxxx},
+      {0xc0, 0x40, &OpcodeDecoder::Decode_01xxxxxx},
+      {0xf0, 0x80, &OpcodeDecoder::Decode_1000iiii_iiiiiiii},
+      {0xff, 0x9d, &OpcodeDecoder::Decode_10011101},
+      {0xff, 0x9f, &OpcodeDecoder::Decode_10011111},
+      {0xf0, 0x90, &OpcodeDecoder::Decode_1001nnnn},
+      {0xf8, 0xa0, &OpcodeDecoder::Decode_10100nnn},
+      {0xf8, 0xa8, &OpcodeDecoder::Decode_10101nnn},
+      {0xff, 0xb0, &OpcodeDecoder::Decode_10110000},
+      {0xff, 0xb1, &OpcodeDecoder::Decode_10110001_0000iiii},
+      {0xff, 0xb2, &OpcodeDecoder::Decode_10110010_uleb128},
+      {0xff, 0xb3, &OpcodeDecoder::Decode_10110011_sssscccc},
+      {0xfc, 0xb4, &OpcodeDecoder::Decode_101101nn},
+      {0xf8, 0xb8, &OpcodeDecoder::Decode_10111nnn},
+      {0xff, 0xc6, &OpcodeDecoder::Decode_11000110_sssscccc},
+      {0xff, 0xc7, &OpcodeDecoder::Decode_11000111_0000iiii},
+      {0xff, 0xc8, &OpcodeDecoder::Decode_11001000_sssscccc},
+      {0xff, 0xc9, &OpcodeDecoder::Decode_11001001_sssscccc},
+      {0xc8, 0xc8, &OpcodeDecoder::Decode_11001yyy},
+      {0xf8, 0xc0, &OpcodeDecoder::Decode_11000nnn},
+      {0xf8, 0xd0, &OpcodeDecoder::Decode_11010nnn},
+      {0xc0, 0xc0, &OpcodeDecoder::Decode_11xxxyyy},
+  };
+  return makeArrayRef(Ring);
+}
+
+inline void OpcodeDecoder::Decode_00xxxxxx(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; vsp = vsp + %u\n", Opcode,
+                           ((Opcode & 0x3f) << 2) + 4);
+}
+inline void OpcodeDecoder::Decode_01xxxxxx(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; vsp = vsp - %u\n", Opcode,
+                           ((Opcode & 0x3f) << 2) + 4);
+}
+inline void OpcodeDecoder::Decode_1000iiii_iiiiiiii(const uint8_t *Opcodes,
+                                                    unsigned &OI) {
+  uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+  uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+
+  uint16_t GPRMask = (Opcode1 << 4) | ((Opcode0 & 0x0f) << 12);
+  SW.startLine()
+    << format("0x%02X 0x%02X ; %s",
+              Opcode0, Opcode1, GPRMask ? "pop " : "refuse to unwind");
+  if (GPRMask)
+    PrintGPR(GPRMask);
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_10011101(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; reserved (ARM MOVrr)\n", Opcode);
+}
+inline void OpcodeDecoder::Decode_10011111(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; reserved (WiMMX MOVrr)\n", Opcode);
+}
+inline void OpcodeDecoder::Decode_1001nnnn(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; vsp = r%u\n", Opcode, (Opcode & 0x0f));
+}
+inline void OpcodeDecoder::Decode_10100nnn(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; pop ", Opcode);
+  PrintGPR((((1 << ((Opcode & 0x7) + 1)) - 1) << 4));
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_10101nnn(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; pop ", Opcode);
+  PrintGPR((((1 << ((Opcode & 0x7) + 1)) - 1) << 4) | (1 << 14));
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_10110000(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; finish\n", Opcode);
+}
+inline void OpcodeDecoder::Decode_10110001_0000iiii(const uint8_t *Opcodes,
+                                                    unsigned &OI) {
+  uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+  uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+
+  SW.startLine()
+    << format("0x%02X 0x%02X ; %s", Opcode0, Opcode1,
+              ((Opcode1 & 0xf0) || Opcode1 == 0x00) ? "spare" : "pop ");
+  if (((Opcode1 & 0xf0) == 0x00) && Opcode1)
+    PrintGPR((Opcode1 & 0x0f));
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_10110010_uleb128(const uint8_t *Opcodes,
+                                                   unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X ", Opcode);
+
+  SmallVector<uint8_t, 4> ULEB;
+  do { ULEB.push_back(Opcodes[OI ^ 3]); } while (Opcodes[OI++ ^ 3] & 0x80);
+
+  for (unsigned BI = 0, BE = ULEB.size(); BI != BE; ++BI)
+    OS << format("0x%02X ", ULEB[BI]);
+
+  uint64_t Value = 0;
+  for (unsigned BI = 0, BE = ULEB.size(); BI != BE; ++BI)
+    Value = Value | ((ULEB[BI] & 0x7f) << (7 * BI));
+
+  OS << format("; vsp = vsp + %" PRIu64 "\n", 0x204 + (Value << 2));
+}
+inline void OpcodeDecoder::Decode_10110011_sssscccc(const uint8_t *Opcodes,
+                                                    unsigned &OI) {
+  uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+  uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X 0x%02X ; pop ", Opcode0, Opcode1);
+  uint8_t Start = ((Opcode1 & 0xf0) >> 4);
+  uint8_t Count = ((Opcode1 & 0x0f) >> 0);
+  PrintRegisters((((1 << (Count + 1)) - 1) << Start), "d");
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_101101nn(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; spare\n", Opcode);
+}
+inline void OpcodeDecoder::Decode_10111nnn(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; pop ", Opcode);
+  PrintRegisters((((1 << ((Opcode & 0x07) + 1)) - 1) << 8), "d");
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_11000110_sssscccc(const uint8_t *Opcodes,
+                                                    unsigned &OI) {
+  uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+  uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X 0x%02X ; pop ", Opcode0, Opcode1);
+  uint8_t Start = ((Opcode1 & 0xf0) >> 4);
+  uint8_t Count = ((Opcode1 & 0x0f) >> 0);
+  PrintRegisters((((1 << (Count + 1)) - 1) << Start), "wR");
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_11000111_0000iiii(const uint8_t *Opcodes,
+                                                    unsigned &OI) {
+  uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+  uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+  SW.startLine()
+    << format("0x%02X 0x%02X ; %s", Opcode0, Opcode1,
+              ((Opcode1 & 0xf0) || Opcode1 == 0x00) ? "spare" : "pop ");
+  if ((Opcode1 & 0xf0) == 0x00 && Opcode1)
+      PrintRegisters(Opcode1 & 0x0f, "wCGR");
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_11001000_sssscccc(const uint8_t *Opcodes,
+                                                    unsigned &OI) {
+  uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+  uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X 0x%02X ; pop ", Opcode0, Opcode1);
+  uint8_t Start = 16 + ((Opcode1 & 0xf0) >> 4);
+  uint8_t Count = ((Opcode1 & 0x0f) >> 0);
+  PrintRegisters((((1 << (Count + 1)) - 1) << Start), "d");
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_11001001_sssscccc(const uint8_t *Opcodes,
+                                                    unsigned &OI) {
+  uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+  uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X 0x%02X ; pop ", Opcode0, Opcode1);
+  uint8_t Start = ((Opcode1 & 0xf0) >> 4);
+  uint8_t Count = ((Opcode1 & 0x0f) >> 0);
+  PrintRegisters((((1 << (Count + 1)) - 1) << Start), "d");
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_11001yyy(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; spare\n", Opcode);
+}
+inline void OpcodeDecoder::Decode_11000nnn(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; pop ", Opcode);
+  PrintRegisters((((1 << ((Opcode & 0x07) + 1)) - 1) << 10), "wR");
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_11010nnn(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; pop ", Opcode);
+  PrintRegisters((((1 << ((Opcode & 0x07) + 1)) - 1) << 8), "d");
+  OS << '\n';
+}
+inline void OpcodeDecoder::Decode_11xxxyyy(const uint8_t *Opcodes,
+                                           unsigned &OI) {
+  uint8_t Opcode = Opcodes[OI++ ^ 3];
+  SW.startLine() << format("0x%02X      ; spare\n", Opcode);
+}
+
+inline void OpcodeDecoder::PrintGPR(uint16_t GPRMask) {
+  static const char *GPRRegisterNames[16] = {
+    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10",
+    "fp", "ip", "sp", "lr", "pc"
+  };
+
+  OS << '{';
+  bool Comma = false;
+  for (unsigned RI = 0, RE = 17; RI < RE; ++RI) {
+    if (GPRMask & (1 << RI)) {
+      if (Comma)
+        OS << ", ";
+      OS << GPRRegisterNames[RI];
+      Comma = true;
+    }
+  }
+  OS << '}';
+}
+
+inline void OpcodeDecoder::PrintRegisters(uint32_t VFPMask, StringRef Prefix) {
+  OS << '{';
+  bool Comma = false;
+  for (unsigned RI = 0, RE = 32; RI < RE; ++RI) {
+    if (VFPMask & (1 << RI)) {
+      if (Comma)
+        OS << ", ";
+      OS << Prefix << RI;
+      Comma = true;
+    }
+  }
+  OS << '}';
+}
+
+inline void OpcodeDecoder::Decode(const uint8_t *Opcodes, off_t Offset,
+                                  size_t Length) {
+  for (unsigned OCI = Offset; OCI < Length + Offset; ) {
+    bool Decoded = false;
+    for (const auto &RE : ring()) {
+      if ((Opcodes[OCI ^ 3] & RE.Mask) == RE.Value) {
+        (this->*RE.Routine)(Opcodes, OCI);
+        Decoded = true;
+        break;
+      }
+    }
+    if (!Decoded)
+      SW.startLine() << format("0x%02X      ; reserved\n", Opcodes[OCI++ ^ 3]);
+  }
+}
+
+template <typename ET>
+class PrinterContext {
+  typedef typename ET::Sym Elf_Sym;
+  typedef typename ET::Shdr Elf_Shdr;
+  typedef typename ET::Rel Elf_Rel;
+  typedef typename ET::Word Elf_Word;
+
+  ScopedPrinter &SW;
+  const object::ELFFile<ET> &ELF;
+  StringRef FileName;
+  const Elf_Shdr *Symtab;
+  ArrayRef<Elf_Word> ShndxTable;
+
+  static const size_t IndexTableEntrySize;
+
+  static uint64_t PREL31(uint32_t Address, uint32_t Place) {
+    uint64_t Location = Address & 0x7fffffff;
+    if (Location & 0x40000000)
+      Location |= (uint64_t) ~0x7fffffff;
+    return Location + Place;
+  }
+
+  ErrorOr<StringRef> FunctionAtAddress(uint64_t Address,
+                                       Optional<unsigned> SectionIndex) const;
+  const Elf_Shdr *FindExceptionTable(unsigned IndexTableIndex,
+                                     off_t IndexTableOffset) const;
+
+  void PrintIndexTable(unsigned SectionIndex, const Elf_Shdr *IT) const;
+  void PrintExceptionTable(const Elf_Shdr &EHT,
+                           uint64_t TableEntryOffset) const;
+  void PrintOpcodes(const uint8_t *Entry, size_t Length, off_t Offset) const;
+
+public:
+  PrinterContext(ScopedPrinter &SW, const object::ELFFile<ET> &ELF,
+                 StringRef FileName, const Elf_Shdr *Symtab)
+      : SW(SW), ELF(ELF), FileName(FileName), Symtab(Symtab) {}
+
+  void PrintUnwindInformation() const;
+};
+
+template <typename ET>
+const size_t PrinterContext<ET>::IndexTableEntrySize = 8;
+
+template <typename ET>
+ErrorOr<StringRef>
+PrinterContext<ET>::FunctionAtAddress(uint64_t Address,
+                                      Optional<unsigned> SectionIndex) const {
+  if (!Symtab)
+    return inconvertibleErrorCode();
+  auto StrTableOrErr = ELF.getStringTableForSymtab(*Symtab);
+  if (!StrTableOrErr)
+    reportError(StrTableOrErr.takeError(), FileName);
+  StringRef StrTable = *StrTableOrErr;
+
+  for (const Elf_Sym &Sym : unwrapOrError(FileName, ELF.symbols(Symtab))) {
+    if (SectionIndex && *SectionIndex != Sym.st_shndx)
+      continue;
+
+    if (Sym.st_value == Address && Sym.getType() == ELF::STT_FUNC) {
+      auto NameOrErr = Sym.getName(StrTable);
+      if (!NameOrErr) {
+        // TODO: Actually report errors helpfully.
+        consumeError(NameOrErr.takeError());
+        return inconvertibleErrorCode();
+      }
+      return *NameOrErr;
+    }
+  }
+
+  return inconvertibleErrorCode();
+}
+
+template <typename ET>
+const typename ET::Shdr *
+PrinterContext<ET>::FindExceptionTable(unsigned IndexSectionIndex,
+                                       off_t IndexTableOffset) const {
+  /// Iterate through the sections, searching for the relocation section
+  /// associated with the unwind index table section specified by
+  /// IndexSectionIndex.  Iterate the associated section searching for the
+  /// relocation associated with the index table entry specified by
+  /// IndexTableOffset.  The symbol is the section symbol for the exception
+  /// handling table.  Use this symbol to recover the actual exception handling
+  /// table.
+
+  for (const Elf_Shdr &Sec : unwrapOrError(FileName, ELF.sections())) {
+    if (Sec.sh_type != ELF::SHT_REL || Sec.sh_info != IndexSectionIndex)
+      continue;
+
+    auto SymTabOrErr = ELF.getSection(Sec.sh_link);
+    if (!SymTabOrErr)
+      reportError(SymTabOrErr.takeError(), FileName);
+    const Elf_Shdr *SymTab = *SymTabOrErr;
+
+    for (const Elf_Rel &R : unwrapOrError(FileName, ELF.rels(Sec))) {
+      if (R.r_offset != static_cast<unsigned>(IndexTableOffset))
+        continue;
+
+      typename ET::Rela RelA;
+      RelA.r_offset = R.r_offset;
+      RelA.r_info = R.r_info;
+      RelA.r_addend = 0;
+
+      const Elf_Sym *Symbol =
+          unwrapOrError(FileName, ELF.getRelocationSymbol(RelA, SymTab));
+
+      auto Ret = ELF.getSection(*Symbol, SymTab, ShndxTable);
+      if (!Ret)
+        report_fatal_error(errorToErrorCode(Ret.takeError()).message());
+      return *Ret;
+    }
+  }
+  return nullptr;
+}
+
+template <typename ET>
+static const typename ET::Shdr *
+findSectionContainingAddress(const object::ELFFile<ET> &Obj, StringRef FileName,
+                             uint64_t Address) {
+  for (const typename ET::Shdr &Sec : unwrapOrError(FileName, Obj.sections()))
+    if (Address >= Sec.sh_addr && Address < Sec.sh_addr + Sec.sh_size)
+      return &Sec;
+  return nullptr;
+}
+
+template <typename ET>
+void PrinterContext<ET>::PrintExceptionTable(const Elf_Shdr &EHT,
+                                             uint64_t TableEntryOffset) const {
+  // TODO: handle failure.
+  Expected<ArrayRef<uint8_t>> Contents = ELF.getSectionContents(EHT);
+  if (!Contents)
+    return;
+
+  /// ARM EHABI Section 6.2 - The generic model
+  ///
+  /// An exception-handling table entry for the generic model is laid out as:
+  ///
+  ///  3 3
+  ///  1 0                            0
+  /// +-+------------------------------+
+  /// |0|  personality routine offset  |
+  /// +-+------------------------------+
+  /// |  personality routine data ...  |
+  ///
+  ///
+  /// ARM EHABI Section 6.3 - The ARM-defined compact model
+  ///
+  /// An exception-handling table entry for the compact model looks like:
+  ///
+  ///  3 3 2 2  2 2
+  ///  1 0 8 7  4 3                     0
+  /// +-+---+----+-----------------------+
+  /// |1| 0 | Ix | data for pers routine |
+  /// +-+---+----+-----------------------+
+  /// |  more personality routine data   |
+
+  const support::ulittle32_t Word =
+    *reinterpret_cast<const support::ulittle32_t *>(Contents->data() + TableEntryOffset);
+
+  if (Word & 0x80000000) {
+    SW.printString("Model", StringRef("Compact"));
+
+    unsigned PersonalityIndex = (Word & 0x0f000000) >> 24;
+    SW.printNumber("PersonalityIndex", PersonalityIndex);
+
+    switch (PersonalityIndex) {
+    case AEABI_UNWIND_CPP_PR0:
+      PrintOpcodes(Contents->data() + TableEntryOffset, 3, 1);
+      break;
+    case AEABI_UNWIND_CPP_PR1:
+    case AEABI_UNWIND_CPP_PR2:
+      unsigned AdditionalWords = (Word & 0x00ff0000) >> 16;
+      PrintOpcodes(Contents->data() + TableEntryOffset, 2 + 4 * AdditionalWords,
+                   2);
+      break;
+    }
+  } else {
+    SW.printString("Model", StringRef("Generic"));
+    const bool IsRelocatable = ELF.getHeader().e_type == ELF::ET_REL;
+    uint64_t Address = IsRelocatable
+                           ? PREL31(Word, EHT.sh_addr)
+                           : PREL31(Word, EHT.sh_addr + TableEntryOffset);
+    SW.printHex("PersonalityRoutineAddress", Address);
+    Optional<unsigned> SecIndex =
+        IsRelocatable ? Optional<unsigned>(EHT.sh_link) : None;
+    if (ErrorOr<StringRef> Name = FunctionAtAddress(Address, SecIndex))
+      SW.printString("PersonalityRoutineName", *Name);
+  }
+}
+
+template <typename ET>
+void PrinterContext<ET>::PrintOpcodes(const uint8_t *Entry,
+                                      size_t Length, off_t Offset) const {
+  ListScope OCC(SW, "Opcodes");
+  OpcodeDecoder(OCC.W).Decode(Entry, Offset, Length);
+}
+
+template <typename ET>
+void PrinterContext<ET>::PrintIndexTable(unsigned SectionIndex,
+                                         const Elf_Shdr *IT) const {
+  // TODO: handle failure.
+  Expected<ArrayRef<uint8_t>> Contents = ELF.getSectionContents(*IT);
+  if (!Contents)
+    return;
+
+  /// ARM EHABI Section 5 - Index Table Entries
+  /// * The first word contains a PREL31 offset to the start of a function with
+  ///   bit 31 clear
+  /// * The second word contains one of:
+  ///   - The PREL31 offset of the start of the table entry for the function,
+  ///     with bit 31 clear
+  ///   - The exception-handling table entry itself with bit 31 set
+  ///   - The special bit pattern EXIDX_CANTUNWIND, indicating that associated
+  ///     frames cannot be unwound
+
+  const support::ulittle32_t *Data =
+    reinterpret_cast<const support::ulittle32_t *>(Contents->data());
+  const unsigned Entries = IT->sh_size / IndexTableEntrySize;
+  const bool IsRelocatable = ELF.getHeader().e_type == ELF::ET_REL;
+
+  ListScope E(SW, "Entries");
+  for (unsigned Entry = 0; Entry < Entries; ++Entry) {
+    DictScope E(SW, "Entry");
+
+    const support::ulittle32_t Word0 =
+      Data[Entry * (IndexTableEntrySize / sizeof(*Data)) + 0];
+    const support::ulittle32_t Word1 =
+      Data[Entry * (IndexTableEntrySize / sizeof(*Data)) + 1];
+
+    if (Word0 & 0x80000000) {
+      errs() << "corrupt unwind data in section " << SectionIndex << "\n";
+      continue;
+    }
+
+    // FIXME: For a relocatable object ideally we might want to:
+    // 1) Find a relocation for the offset of Word0.
+    // 2) Verify this relocation is of an expected type (R_ARM_PREL31) and
+    //    verify the symbol index.
+    // 3) Resolve the relocation using it's symbol value, addend etc.
+    // Currently the code assumes that Word0 contains an addend of a
+    // R_ARM_PREL31 REL relocation that references a section symbol. RELA
+    // relocations are not supported and it works because addresses of sections
+    // are nulls in relocatable objects.
+    //
+    // For a non-relocatable object, Word0 contains a place-relative signed
+    // offset to the referenced entity.
+    const uint64_t Address =
+        IsRelocatable
+            ? PREL31(Word0, IT->sh_addr)
+            : PREL31(Word0, IT->sh_addr + Entry * IndexTableEntrySize);
+    SW.printHex("FunctionAddress", Address);
+
+    // In a relocatable output we might have many .ARM.exidx sections linked to
+    // their code sections via the sh_link field. For a non-relocatable ELF file
+    // the sh_link field is not reliable, because we have one .ARM.exidx section
+    // normally, but might have many code sections.
+    Optional<unsigned> SecIndex =
+        IsRelocatable ? Optional<unsigned>(IT->sh_link) : None;
+    if (ErrorOr<StringRef> Name = FunctionAtAddress(Address, SecIndex))
+      SW.printString("FunctionName", *Name);
+
+    if (Word1 == EXIDX_CANTUNWIND) {
+      SW.printString("Model", StringRef("CantUnwind"));
+      continue;
+    }
+
+    if (Word1 & 0x80000000) {
+      SW.printString("Model", StringRef("Compact (Inline)"));
+
+      unsigned PersonalityIndex = (Word1 & 0x0f000000) >> 24;
+      SW.printNumber("PersonalityIndex", PersonalityIndex);
+
+      PrintOpcodes(Contents->data() + Entry * IndexTableEntrySize + 4, 3, 1);
+    } else {
+      const Elf_Shdr *EHT;
+      uint64_t TableEntryAddress;
+      if (IsRelocatable) {
+        TableEntryAddress = PREL31(Word1, IT->sh_addr);
+        EHT = FindExceptionTable(SectionIndex, Entry * IndexTableEntrySize + 4);
+      } else {
+        TableEntryAddress =
+            PREL31(Word1, IT->sh_addr + Entry * IndexTableEntrySize + 4);
+        EHT = findSectionContainingAddress(ELF, FileName, TableEntryAddress);
+      }
+
+      if (EHT)
+        // TODO: handle failure.
+        if (Expected<StringRef> Name = ELF.getSectionName(*EHT))
+          SW.printString("ExceptionHandlingTable", *Name);
+
+      SW.printHex(IsRelocatable ? "TableEntryOffset" : "TableEntryAddress",
+                  TableEntryAddress);
+      if (EHT) {
+        if (IsRelocatable)
+          PrintExceptionTable(*EHT, TableEntryAddress);
+        else
+          PrintExceptionTable(*EHT, TableEntryAddress - EHT->sh_addr);
+      }
+    }
+  }
+}
+
+template <typename ET>
+void PrinterContext<ET>::PrintUnwindInformation() const {
+  DictScope UI(SW, "UnwindInformation");
+
+  int SectionIndex = 0;
+  for (const Elf_Shdr &Sec : unwrapOrError(FileName, ELF.sections())) {
+    if (Sec.sh_type == ELF::SHT_ARM_EXIDX) {
+      DictScope UIT(SW, "UnwindIndexTable");
+
+      SW.printNumber("SectionIndex", SectionIndex);
+      // TODO: handle failure.
+      if (Expected<StringRef> SectionName = ELF.getSectionName(Sec))
+        SW.printString("SectionName", *SectionName);
+      SW.printHex("SectionOffset", Sec.sh_offset);
+
+      PrintIndexTable(SectionIndex, &Sec);
+    }
+    ++SectionIndex;
+  }
+}
+}
+}
+}
+
+#endif
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/ARMWinEHPrinter.cpp b/contrib/libs/llvm12/tools/llvm-readobj/ARMWinEHPrinter.cpp
new file mode 100644
index 0000000000..5995a09514
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/ARMWinEHPrinter.cpp
@@ -0,0 +1,1301 @@
+//===-- ARMWinEHPrinter.cpp - Windows on ARM EH Data Printer ----*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Windows on ARM uses a series of serialised data structures (RuntimeFunction)
+// to create a table of information for unwinding.  In order to conserve space,
+// there are two different ways that this data is represented.
+//
+// For functions with canonical forms for the prologue and epilogue, the data
+// can be stored in a "packed" form.  In this case, the data is packed into the
+// RuntimeFunction's remaining 30-bits and can fully describe the entire frame.
+//
+//        +---------------------------------------+
+//        |         Function Entry Address        |
+//        +---------------------------------------+
+//        |           Packed Form Data            |
+//        +---------------------------------------+
+//
+// This layout is parsed by Decoder::dumpPackedEntry.  No unwind bytecode is
+// associated with such a frame as they can be derived from the provided data.
+// The decoder does not synthesize this data as it is unnecessary for the
+// purposes of validation, with the synthesis being required only by a proper
+// unwinder.
+//
+// For functions that are large or do not match canonical forms, the data is
+// split up into two portions, with the actual data residing in the "exception
+// data" table (.xdata) with a reference to the entry from the "procedure data"
+// (.pdata) entry.
+//
+// The exception data contains information about the frame setup, all of the
+// epilogue scopes (for functions for which there are multiple exit points) and
+// the associated exception handler.  Additionally, the entry contains byte-code
+// describing how to unwind the function (c.f. Decoder::decodeOpcodes).
+//
+//        +---------------------------------------+
+//        |         Function Entry Address        |
+//        +---------------------------------------+
+//        |      Exception Data Entry Address     |
+//        +---------------------------------------+
+//
+// This layout is parsed by Decoder::dumpUnpackedEntry.  Such an entry must
+// first resolve the exception data entry address.  This structure
+// (ExceptionDataRecord) has a variable sized header
+// (c.f. ARM::WinEH::HeaderWords) and encodes most of the same information as
+// the packed form.  However, because this information is insufficient to
+// synthesize the unwinding, there are associated unwinding bytecode which make
+// up the bulk of the Decoder.
+//
+// The decoder itself is table-driven, using the first byte to determine the
+// opcode and dispatching to the associated printing routine.  The bytecode
+// itself is a variable length instruction encoding that can fully describe the
+// state of the stack and the necessary operations for unwinding to the
+// beginning of the frame.
+//
+// The byte-code maintains a 1-1 instruction mapping, indicating both the width
+// of the instruction (Thumb2 instructions are variable length, 16 or 32 bits
+// wide) allowing the program to unwind from any point in the prologue, body, or
+// epilogue of the function.
+
+#include "ARMWinEHPrinter.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/ARMWinEH.h"
+#include "llvm/Support/Format.h"
+
+using namespace llvm;
+using namespace llvm::object;
+using namespace llvm::support;
+
+namespace llvm {
+raw_ostream &operator<<(raw_ostream &OS, const ARM::WinEH::ReturnType &RT) {
+  switch (RT) {
+  case ARM::WinEH::ReturnType::RT_POP:
+    OS << "pop {pc}";
+    break;
+  case ARM::WinEH::ReturnType::RT_B:
+    OS << "b target";
+    break;
+  case ARM::WinEH::ReturnType::RT_BW:
+    OS << "b.w target";
+    break;
+  case ARM::WinEH::ReturnType::RT_NoEpilogue:
+    OS << "(no epilogue)";
+    break;
+  }
+  return OS;
+}
+}
+
+static std::string formatSymbol(StringRef Name, uint64_t Address,
+                                uint64_t Offset = 0) {
+  std::string Buffer;
+  raw_string_ostream OS(Buffer);
+
+  if (!Name.empty())
+    OS << Name << " ";
+
+  if (Offset)
+    OS << format("+0x%X (0x%" PRIX64 ")", Offset, Address);
+  else if (!Name.empty())
+    OS << format("(0x%" PRIX64 ")", Address);
+  else
+    OS << format("0x%" PRIX64, Address);
+
+  return OS.str();
+}
+
+namespace llvm {
+namespace ARM {
+namespace WinEH {
+const size_t Decoder::PDataEntrySize = sizeof(RuntimeFunction);
+
+// TODO name the uops more appropriately
+const Decoder::RingEntry Decoder::Ring[] = {
+  { 0x80, 0x00, 1, &Decoder::opcode_0xxxxxxx },  // UOP_STACK_FREE (16-bit)
+  { 0xc0, 0x80, 2, &Decoder::opcode_10Lxxxxx },  // UOP_POP (32-bit)
+  { 0xf0, 0xc0, 1, &Decoder::opcode_1100xxxx },  // UOP_STACK_SAVE (16-bit)
+  { 0xf8, 0xd0, 1, &Decoder::opcode_11010Lxx },  // UOP_POP (16-bit)
+  { 0xf8, 0xd8, 1, &Decoder::opcode_11011Lxx },  // UOP_POP (32-bit)
+  { 0xf8, 0xe0, 1, &Decoder::opcode_11100xxx },  // UOP_VPOP (32-bit)
+  { 0xfc, 0xe8, 2, &Decoder::opcode_111010xx },  // UOP_STACK_FREE (32-bit)
+  { 0xfe, 0xec, 2, &Decoder::opcode_1110110L },  // UOP_POP (16-bit)
+  { 0xff, 0xee, 2, &Decoder::opcode_11101110 },  // UOP_MICROSOFT_SPECIFIC (16-bit)
+                                              // UOP_PUSH_MACHINE_FRAME
+                                              // UOP_PUSH_CONTEXT
+                                              // UOP_PUSH_TRAP_FRAME
+                                              // UOP_REDZONE_RESTORE_LR
+  { 0xff, 0xef, 2, &Decoder::opcode_11101111 },  // UOP_LDRPC_POSTINC (32-bit)
+  { 0xff, 0xf5, 2, &Decoder::opcode_11110101 },  // UOP_VPOP (32-bit)
+  { 0xff, 0xf6, 2, &Decoder::opcode_11110110 },  // UOP_VPOP (32-bit)
+  { 0xff, 0xf7, 3, &Decoder::opcode_11110111 },  // UOP_STACK_RESTORE (16-bit)
+  { 0xff, 0xf8, 4, &Decoder::opcode_11111000 },  // UOP_STACK_RESTORE (16-bit)
+  { 0xff, 0xf9, 3, &Decoder::opcode_11111001 },  // UOP_STACK_RESTORE (32-bit)
+  { 0xff, 0xfa, 4, &Decoder::opcode_11111010 },  // UOP_STACK_RESTORE (32-bit)
+  { 0xff, 0xfb, 1, &Decoder::opcode_11111011 },  // UOP_NOP (16-bit)
+  { 0xff, 0xfc, 1, &Decoder::opcode_11111100 },  // UOP_NOP (32-bit)
+  { 0xff, 0xfd, 1, &Decoder::opcode_11111101 },  // UOP_NOP (16-bit) / END
+  { 0xff, 0xfe, 1, &Decoder::opcode_11111110 },  // UOP_NOP (32-bit) / END
+  { 0xff, 0xff, 1, &Decoder::opcode_11111111 },  // UOP_END
+};
+
+
+// Unwind opcodes for ARM64.
+// https://docs.microsoft.com/en-us/cpp/build/arm64-exception-handling
+const Decoder::RingEntry Decoder::Ring64[] = {
+  { 0xe0, 0x00, 1, &Decoder::opcode_alloc_s },
+  { 0xe0, 0x20, 1, &Decoder::opcode_save_r19r20_x },
+  { 0xc0, 0x40, 1, &Decoder::opcode_save_fplr },
+  { 0xc0, 0x80, 1, &Decoder::opcode_save_fplr_x },
+  { 0xf8, 0xc0, 2, &Decoder::opcode_alloc_m },
+  { 0xfc, 0xc8, 2, &Decoder::opcode_save_regp },
+  { 0xfc, 0xcc, 2, &Decoder::opcode_save_regp_x },
+  { 0xfc, 0xd0, 2, &Decoder::opcode_save_reg },
+  { 0xfe, 0xd4, 2, &Decoder::opcode_save_reg_x },
+  { 0xfe, 0xd6, 2, &Decoder::opcode_save_lrpair },
+  { 0xfe, 0xd8, 2, &Decoder::opcode_save_fregp },
+  { 0xfe, 0xda, 2, &Decoder::opcode_save_fregp_x },
+  { 0xfe, 0xdc, 2, &Decoder::opcode_save_freg },
+  { 0xff, 0xde, 2, &Decoder::opcode_save_freg_x },
+  { 0xff, 0xe0, 4, &Decoder::opcode_alloc_l },
+  { 0xff, 0xe1, 1, &Decoder::opcode_setfp },
+  { 0xff, 0xe2, 2, &Decoder::opcode_addfp },
+  { 0xff, 0xe3, 1, &Decoder::opcode_nop },
+  { 0xff, 0xe4, 1, &Decoder::opcode_end },
+  { 0xff, 0xe5, 1, &Decoder::opcode_end_c },
+  { 0xff, 0xe6, 1, &Decoder::opcode_save_next },
+  { 0xff, 0xe8, 1, &Decoder::opcode_trap_frame },
+  { 0xff, 0xe9, 1, &Decoder::opcode_machine_frame },
+  { 0xff, 0xea, 1, &Decoder::opcode_context },
+  { 0xff, 0xec, 1, &Decoder::opcode_clear_unwound_to_call },
+};
+
+void Decoder::printRegisters(const std::pair<uint16_t, uint32_t> &RegisterMask) {
+  static const char * const GPRRegisterNames[16] = {
+    "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10",
+    "r11", "ip", "sp", "lr", "pc",
+  };
+
+  const uint16_t GPRMask = std::get<0>(RegisterMask);
+  const uint16_t VFPMask = std::get<1>(RegisterMask);
+
+  OS << '{';
+  bool Comma = false;
+  for (unsigned RI = 0, RE = 11; RI < RE; ++RI) {
+    if (GPRMask & (1 << RI)) {
+      if (Comma)
+        OS << ", ";
+      OS << GPRRegisterNames[RI];
+      Comma = true;
+    }
+  }
+  for (unsigned RI = 0, RE = 32; RI < RE; ++RI) {
+    if (VFPMask & (1 << RI)) {
+      if (Comma)
+        OS << ", ";
+      OS << "d" << unsigned(RI);
+      Comma = true;
+    }
+  }
+  for (unsigned RI = 11, RE = 16; RI < RE; ++RI) {
+    if (GPRMask & (1 << RI)) {
+      if (Comma)
+        OS << ", ";
+      OS << GPRRegisterNames[RI];
+      Comma = true;
+    }
+  }
+  OS << '}';
+}
+
+ErrorOr<object::SectionRef>
+Decoder::getSectionContaining(const COFFObjectFile &COFF, uint64_t VA) {
+  for (const auto &Section : COFF.sections()) {
+    uint64_t Address = Section.getAddress();
+    uint64_t Size = Section.getSize();
+
+    if (VA >= Address && (VA - Address) <= Size)
+      return Section;
+  }
+  return inconvertibleErrorCode();
+}
+
+ErrorOr<object::SymbolRef> Decoder::getSymbol(const COFFObjectFile &COFF,
+                                              uint64_t VA, bool FunctionOnly) {
+  for (const auto &Symbol : COFF.symbols()) {
+    Expected<SymbolRef::Type> Type = Symbol.getType();
+    if (!Type)
+      return errorToErrorCode(Type.takeError());
+    if (FunctionOnly && *Type != SymbolRef::ST_Function)
+      continue;
+
+    Expected<uint64_t> Address = Symbol.getAddress();
+    if (!Address)
+      return errorToErrorCode(Address.takeError());
+    if (*Address == VA)
+      return Symbol;
+  }
+  return inconvertibleErrorCode();
+}
+
+ErrorOr<SymbolRef> Decoder::getRelocatedSymbol(const COFFObjectFile &,
+                                               const SectionRef &Section,
+                                               uint64_t Offset) {
+  for (const auto &Relocation : Section.relocations()) {
+    uint64_t RelocationOffset = Relocation.getOffset();
+    if (RelocationOffset == Offset)
+      return *Relocation.getSymbol();
+  }
+  return inconvertibleErrorCode();
+}
+
+bool Decoder::opcode_0xxxxxxx(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  uint8_t Imm = OC[Offset] & 0x7f;
+  SW.startLine() << format("0x%02x                ; %s sp, #(%u * 4)\n",
+                           OC[Offset],
+                           static_cast<const char *>(Prologue ? "sub" : "add"),
+                           Imm);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_10Lxxxxx(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  unsigned Link = (OC[Offset] & 0x20) >> 5;
+  uint16_t RegisterMask = (Link << (Prologue ? 14 : 15))
+                        | ((OC[Offset + 0] & 0x1f) << 8)
+                        | ((OC[Offset + 1] & 0xff) << 0);
+  assert((~RegisterMask & (1 << 13)) && "sp must not be set");
+  assert((~RegisterMask & (1 << (Prologue ? 15 : 14))) && "pc must not be set");
+
+  SW.startLine() << format("0x%02x 0x%02x           ; %s.w ",
+                           OC[Offset + 0], OC[Offset + 1],
+                           Prologue ? "push" : "pop");
+  printRegisters(std::make_pair(RegisterMask, 0));
+  OS << '\n';
+
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_1100xxxx(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  if (Prologue)
+    SW.startLine() << format("0x%02x                ; mov r%u, sp\n",
+                             OC[Offset], OC[Offset] & 0xf);
+  else
+    SW.startLine() << format("0x%02x                ; mov sp, r%u\n",
+                             OC[Offset], OC[Offset] & 0xf);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_11010Lxx(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  unsigned Link = (OC[Offset] & 0x4) >> 3;
+  unsigned Count = (OC[Offset] & 0x3);
+
+  uint16_t GPRMask = (Link << (Prologue ? 14 : 15))
+                   | (((1 << (Count + 1)) - 1) << 4);
+
+  SW.startLine() << format("0x%02x                ; %s ", OC[Offset],
+                           Prologue ? "push" : "pop");
+  printRegisters(std::make_pair(GPRMask, 0));
+  OS << '\n';
+
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_11011Lxx(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  unsigned Link = (OC[Offset] & 0x4) >> 2;
+  unsigned Count = (OC[Offset] & 0x3) + 4;
+
+  uint16_t GPRMask = (Link << (Prologue ? 14 : 15))
+                   | (((1 << (Count + 1)) - 1) << 4);
+
+  SW.startLine() << format("0x%02x                ; %s.w ", OC[Offset],
+                           Prologue ? "push" : "pop");
+  printRegisters(std::make_pair(GPRMask, 0));
+  OS << '\n';
+
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_11100xxx(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  unsigned High = (OC[Offset] & 0x7);
+  uint32_t VFPMask = (((1 << (High + 1)) - 1) << 8);
+
+  SW.startLine() << format("0x%02x                ; %s ", OC[Offset],
+                           Prologue ? "vpush" : "vpop");
+  printRegisters(std::make_pair(0, VFPMask));
+  OS << '\n';
+
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_111010xx(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  uint16_t Imm = ((OC[Offset + 0] & 0x03) << 8) | ((OC[Offset + 1] & 0xff) << 0);
+
+  SW.startLine() << format("0x%02x 0x%02x           ; %s.w sp, #(%u * 4)\n",
+                           OC[Offset + 0], OC[Offset + 1],
+                           static_cast<const char *>(Prologue ? "sub" : "add"),
+                           Imm);
+
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_1110110L(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  uint8_t GPRMask = ((OC[Offset + 0] & 0x01) << (Prologue ? 14 : 15))
+                  | ((OC[Offset + 1] & 0xff) << 0);
+
+  SW.startLine() << format("0x%02x 0x%02x           ; %s ", OC[Offset + 0],
+                           OC[Offset + 1], Prologue ? "push" : "pop");
+  printRegisters(std::make_pair(GPRMask, 0));
+  OS << '\n';
+
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_11101110(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  assert(!Prologue && "may not be used in prologue");
+
+  if (OC[Offset + 1] & 0xf0)
+    SW.startLine() << format("0x%02x 0x%02x           ; reserved\n",
+                             OC[Offset + 0], OC[Offset +  1]);
+  else
+    SW.startLine()
+      << format("0x%02x 0x%02x           ; microsoft-specific (type: %u)\n",
+                OC[Offset + 0], OC[Offset + 1], OC[Offset + 1] & 0x0f);
+
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_11101111(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  assert(!Prologue && "may not be used in prologue");
+
+  if (OC[Offset + 1] & 0xf0)
+    SW.startLine() << format("0x%02x 0x%02x           ; reserved\n",
+                             OC[Offset + 0], OC[Offset +  1]);
+  else
+    SW.startLine()
+      << format("0x%02x 0x%02x           ; ldr.w lr, [sp], #%u\n",
+                OC[Offset + 0], OC[Offset + 1], OC[Offset + 1] << 2);
+
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_11110101(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  unsigned Start = (OC[Offset + 1] & 0xf0) >> 4;
+  unsigned End = (OC[Offset + 1] & 0x0f) >> 0;
+  uint32_t VFPMask = ((1 << (End - Start)) - 1) << Start;
+
+  SW.startLine() << format("0x%02x 0x%02x           ; %s ", OC[Offset + 0],
+                           OC[Offset + 1], Prologue ? "vpush" : "vpop");
+  printRegisters(std::make_pair(0, VFPMask));
+  OS << '\n';
+
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_11110110(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  unsigned Start = (OC[Offset + 1] & 0xf0) >> 4;
+  unsigned End = (OC[Offset + 1] & 0x0f) >> 0;
+  uint32_t VFPMask = ((1 << (End - Start)) - 1) << 16;
+
+  SW.startLine() << format("0x%02x 0x%02x           ; %s ", OC[Offset + 0],
+                           OC[Offset + 1], Prologue ? "vpush" : "vpop");
+  printRegisters(std::make_pair(0, VFPMask));
+  OS << '\n';
+
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_11110111(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  uint32_t Imm = (OC[Offset + 1] << 8) | (OC[Offset + 2] << 0);
+
+  SW.startLine() << format("0x%02x 0x%02x 0x%02x      ; %s sp, sp, #(%u * 4)\n",
+                           OC[Offset + 0], OC[Offset + 1], OC[Offset + 2],
+                           static_cast<const char *>(Prologue ? "sub" : "add"),
+                           Imm);
+
+  Offset += 3;
+  return false;
+}
+
+bool Decoder::opcode_11111000(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  uint32_t Imm = (OC[Offset + 1] << 16)
+               | (OC[Offset + 2] << 8)
+               | (OC[Offset + 3] << 0);
+
+  SW.startLine()
+    << format("0x%02x 0x%02x 0x%02x 0x%02x ; %s sp, sp, #(%u * 4)\n",
+              OC[Offset + 0], OC[Offset + 1], OC[Offset + 2], OC[Offset + 3],
+              static_cast<const char *>(Prologue ? "sub" : "add"), Imm);
+
+  Offset += 4;
+  return false;
+}
+
+bool Decoder::opcode_11111001(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  uint32_t Imm = (OC[Offset + 1] << 8) | (OC[Offset + 2] << 0);
+
+  SW.startLine()
+    << format("0x%02x 0x%02x 0x%02x      ; %s.w sp, sp, #(%u * 4)\n",
+              OC[Offset + 0], OC[Offset + 1], OC[Offset + 2],
+              static_cast<const char *>(Prologue ? "sub" : "add"), Imm);
+
+  Offset += 3;
+  return false;
+}
+
+bool Decoder::opcode_11111010(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  uint32_t Imm = (OC[Offset + 1] << 16)
+               | (OC[Offset + 2] << 8)
+               | (OC[Offset + 3] << 0);
+
+  SW.startLine()
+    << format("0x%02x 0x%02x 0x%02x 0x%02x ; %s.w sp, sp, #(%u * 4)\n",
+              OC[Offset + 0], OC[Offset + 1], OC[Offset + 2], OC[Offset + 3],
+              static_cast<const char *>(Prologue ? "sub" : "add"), Imm);
+
+  Offset += 4;
+  return false;
+}
+
+bool Decoder::opcode_11111011(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  SW.startLine() << format("0x%02x                ; nop\n", OC[Offset]);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_11111100(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  SW.startLine() << format("0x%02x                ; nop.w\n", OC[Offset]);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_11111101(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  SW.startLine() << format("0x%02x                ; b\n", OC[Offset]);
+  ++Offset;
+  return true;
+}
+
+bool Decoder::opcode_11111110(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  SW.startLine() << format("0x%02x                ; b.w\n", OC[Offset]);
+  ++Offset;
+  return true;
+}
+
+bool Decoder::opcode_11111111(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  ++Offset;
+  return true;
+}
+
+// ARM64 unwind codes start here.
+bool Decoder::opcode_alloc_s(const uint8_t *OC, unsigned &Offset,
+                             unsigned Length, bool Prologue) {
+  uint32_t NumBytes = (OC[Offset] & 0x1F) << 4;
+  SW.startLine() << format("0x%02x                ; %s sp, #%u\n", OC[Offset],
+                           static_cast<const char *>(Prologue ? "sub" : "add"),
+                           NumBytes);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_save_r19r20_x(const uint8_t *OC, unsigned &Offset,
+                                   unsigned Length, bool Prologue) {
+  uint32_t Off = (OC[Offset] & 0x1F) << 3;
+  if (Prologue)
+    SW.startLine() << format(
+        "0x%02x                ; stp x19, x20, [sp, #-%u]!\n", OC[Offset], Off);
+  else
+    SW.startLine() << format(
+        "0x%02x                ; ldp x19, x20, [sp], #%u\n", OC[Offset], Off);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_save_fplr(const uint8_t *OC, unsigned &Offset,
+                               unsigned Length, bool Prologue) {
+  uint32_t Off = (OC[Offset] & 0x3F) << 3;
+  SW.startLine() << format(
+      "0x%02x                ; %s x29, x30, [sp, #%u]\n", OC[Offset],
+      static_cast<const char *>(Prologue ? "stp" : "ldp"), Off);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_save_fplr_x(const uint8_t *OC, unsigned &Offset,
+                                 unsigned Length, bool Prologue) {
+  uint32_t Off = ((OC[Offset] & 0x3F) + 1) << 3;
+  if (Prologue)
+    SW.startLine() << format(
+        "0x%02x                ; stp x29, x30, [sp, #-%u]!\n", OC[Offset], Off);
+  else
+    SW.startLine() << format(
+        "0x%02x                ; ldp x29, x30, [sp], #%u\n", OC[Offset], Off);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_alloc_m(const uint8_t *OC, unsigned &Offset,
+                             unsigned Length, bool Prologue) {
+  uint32_t NumBytes = ((OC[Offset] & 0x07) << 8);
+  NumBytes |= (OC[Offset + 1] & 0xFF);
+  NumBytes <<= 4;
+  SW.startLine() << format("0x%02x%02x              ; %s sp, #%u\n",
+                           OC[Offset], OC[Offset + 1],
+                           static_cast<const char *>(Prologue ? "sub" : "add"),
+                           NumBytes);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_regp(const uint8_t *OC, unsigned &Offset,
+                               unsigned Length, bool Prologue) {
+  uint32_t Reg = ((OC[Offset] & 0x03) << 8);
+  Reg |= (OC[Offset + 1] & 0xC0);
+  Reg >>= 6;
+  Reg += 19;
+  uint32_t Off = (OC[Offset + 1] & 0x3F) << 3;
+  SW.startLine() << format(
+      "0x%02x%02x              ; %s x%u, x%u, [sp, #%u]\n",
+      OC[Offset], OC[Offset + 1],
+      static_cast<const char *>(Prologue ? "stp" : "ldp"), Reg, Reg + 1, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_regp_x(const uint8_t *OC, unsigned &Offset,
+                                 unsigned Length, bool Prologue) {
+  uint32_t Reg = ((OC[Offset] & 0x03) << 8);
+  Reg |= (OC[Offset + 1] & 0xC0);
+  Reg >>= 6;
+  Reg += 19;
+  uint32_t Off = ((OC[Offset + 1] & 0x3F) + 1) << 3;
+  if (Prologue)
+    SW.startLine() << format(
+        "0x%02x%02x              ; stp x%u, x%u, [sp, #-%u]!\n",
+        OC[Offset], OC[Offset + 1], Reg,
+        Reg + 1, Off);
+  else
+    SW.startLine() << format(
+        "0x%02x%02x              ; ldp x%u, x%u, [sp], #%u\n",
+        OC[Offset], OC[Offset + 1], Reg,
+        Reg + 1, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_reg(const uint8_t *OC, unsigned &Offset,
+                              unsigned Length, bool Prologue) {
+  uint32_t Reg = (OC[Offset] & 0x03) << 8;
+  Reg |= (OC[Offset + 1] & 0xC0);
+  Reg >>= 6;
+  Reg += 19;
+  uint32_t Off = (OC[Offset + 1] & 0x3F) << 3;
+  SW.startLine() << format("0x%02x%02x              ; %s x%u, [sp, #%u]\n",
+                           OC[Offset], OC[Offset + 1],
+                           static_cast<const char *>(Prologue ? "str" : "ldr"),
+                           Reg, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_reg_x(const uint8_t *OC, unsigned &Offset,
+                                unsigned Length, bool Prologue) {
+  uint32_t Reg = (OC[Offset] & 0x01) << 8;
+  Reg |= (OC[Offset + 1] & 0xE0);
+  Reg >>= 5;
+  Reg += 19;
+  uint32_t Off = ((OC[Offset + 1] & 0x1F) + 1) << 3;
+  if (Prologue)
+    SW.startLine() << format("0x%02x%02x              ; str x%u, [sp, #-%u]!\n",
+                             OC[Offset], OC[Offset + 1], Reg, Off);
+  else
+    SW.startLine() << format("0x%02x%02x              ; ldr x%u, [sp], #%u\n",
+                             OC[Offset], OC[Offset + 1], Reg, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_lrpair(const uint8_t *OC, unsigned &Offset,
+                                 unsigned Length, bool Prologue) {
+  uint32_t Reg = (OC[Offset] & 0x01) << 8;
+  Reg |= (OC[Offset + 1] & 0xC0);
+  Reg >>= 6;
+  Reg *= 2;
+  Reg += 19;
+  uint32_t Off = (OC[Offset + 1] & 0x3F) << 3;
+  SW.startLine() << format("0x%02x%02x              ; %s x%u, lr, [sp, #%u]\n",
+                           OC[Offset], OC[Offset + 1],
+                           static_cast<const char *>(Prologue ? "stp" : "ldp"),
+                           Reg, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_fregp(const uint8_t *OC, unsigned &Offset,
+                                unsigned Length, bool Prologue) {
+  uint32_t Reg = (OC[Offset] & 0x01) << 8;
+  Reg |= (OC[Offset + 1] & 0xC0);
+  Reg >>= 6;
+  Reg += 8;
+  uint32_t Off = (OC[Offset + 1] & 0x3F) << 3;
+  SW.startLine() << format("0x%02x%02x              ; %s d%u, d%u, [sp, #%u]\n",
+                           OC[Offset], OC[Offset + 1],
+                           static_cast<const char *>(Prologue ? "stp" : "ldp"),
+                           Reg, Reg + 1, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_fregp_x(const uint8_t *OC, unsigned &Offset,
+                                  unsigned Length, bool Prologue) {
+  uint32_t Reg = (OC[Offset] & 0x01) << 8;
+  Reg |= (OC[Offset + 1] & 0xC0);
+  Reg >>= 6;
+  Reg += 8;
+  uint32_t Off = ((OC[Offset + 1] & 0x3F) + 1) << 3;
+  if (Prologue)
+    SW.startLine() << format(
+        "0x%02x%02x              ; stp d%u, d%u, [sp, #-%u]!\n", OC[Offset],
+        OC[Offset + 1], Reg, Reg + 1, Off);
+  else
+    SW.startLine() << format(
+        "0x%02x%02x              ; ldp d%u, d%u, [sp], #%u\n", OC[Offset],
+        OC[Offset + 1], Reg, Reg + 1, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_freg(const uint8_t *OC, unsigned &Offset,
+                               unsigned Length, bool Prologue) {
+  uint32_t Reg = (OC[Offset] & 0x01) << 8;
+  Reg |= (OC[Offset + 1] & 0xC0);
+  Reg >>= 6;
+  Reg += 8;
+  uint32_t Off = (OC[Offset + 1] & 0x3F) << 3;
+  SW.startLine() << format("0x%02x%02x              ; %s d%u, [sp, #%u]\n",
+                           OC[Offset], OC[Offset + 1],
+                           static_cast<const char *>(Prologue ? "str" : "ldr"),
+                           Reg, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_save_freg_x(const uint8_t *OC, unsigned &Offset,
+                                 unsigned Length, bool Prologue) {
+  uint32_t Reg = ((OC[Offset + 1] & 0xE0) >> 5) + 8;
+  uint32_t Off = ((OC[Offset + 1] & 0x1F) + 1) << 3;
+  if (Prologue)
+    SW.startLine() << format(
+        "0x%02x%02x              ; str d%u, [sp, #-%u]!\n", OC[Offset],
+        OC[Offset + 1], Reg, Off);
+  else
+    SW.startLine() << format(
+        "0x%02x%02x              ; ldr d%u, [sp], #%u\n", OC[Offset],
+        OC[Offset + 1], Reg, Off);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_alloc_l(const uint8_t *OC, unsigned &Offset,
+                             unsigned Length, bool Prologue) {
+  unsigned Off =
+      (OC[Offset + 1] << 16) | (OC[Offset + 2] << 8) | (OC[Offset + 3] << 0);
+  Off <<= 4;
+  SW.startLine() << format(
+      "0x%02x%02x%02x%02x          ; %s sp, #%u\n", OC[Offset], OC[Offset + 1],
+      OC[Offset + 2], OC[Offset + 3],
+      static_cast<const char *>(Prologue ? "sub" : "add"), Off);
+  Offset += 4;
+  return false;
+}
+
+bool Decoder::opcode_setfp(const uint8_t *OC, unsigned &Offset, unsigned Length,
+                           bool Prologue) {
+  SW.startLine() << format("0x%02x                ; mov %s, %s\n", OC[Offset],
+                           static_cast<const char *>(Prologue ? "fp" : "sp"),
+                           static_cast<const char *>(Prologue ? "sp" : "fp"));
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_addfp(const uint8_t *OC, unsigned &Offset, unsigned Length,
+                           bool Prologue) {
+  unsigned NumBytes = OC[Offset + 1] << 3;
+  SW.startLine() << format(
+      "0x%02x%02x              ; %s %s, %s, #%u\n", OC[Offset], OC[Offset + 1],
+      static_cast<const char *>(Prologue ? "add" : "sub"),
+      static_cast<const char *>(Prologue ? "fp" : "sp"),
+      static_cast<const char *>(Prologue ? "sp" : "fp"), NumBytes);
+  Offset += 2;
+  return false;
+}
+
+bool Decoder::opcode_nop(const uint8_t *OC, unsigned &Offset, unsigned Length,
+                         bool Prologue) {
+  SW.startLine() << format("0x%02x                ; nop\n", OC[Offset]);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_end(const uint8_t *OC, unsigned &Offset, unsigned Length,
+                         bool Prologue) {
+  SW.startLine() << format("0x%02x                ; end\n", OC[Offset]);
+  ++Offset;
+  return true;
+}
+
+bool Decoder::opcode_end_c(const uint8_t *OC, unsigned &Offset, unsigned Length,
+                           bool Prologue) {
+  SW.startLine() << format("0x%02x                ; end_c\n", OC[Offset]);
+  ++Offset;
+  return true;
+}
+
+bool Decoder::opcode_save_next(const uint8_t *OC, unsigned &Offset,
+                               unsigned Length, bool Prologue) {
+  if (Prologue)
+    SW.startLine() << format("0x%02x                ; save next\n", OC[Offset]);
+  else
+    SW.startLine() << format("0x%02x                ; restore next\n",
+                             OC[Offset]);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_trap_frame(const uint8_t *OC, unsigned &Offset,
+                                unsigned Length, bool Prologue) {
+  SW.startLine() << format("0x%02x                ; trap frame\n", OC[Offset]);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_machine_frame(const uint8_t *OC, unsigned &Offset,
+                                   unsigned Length, bool Prologue) {
+  SW.startLine() << format("0x%02x                ; machine frame\n",
+                           OC[Offset]);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_context(const uint8_t *OC, unsigned &Offset,
+                             unsigned Length, bool Prologue) {
+  SW.startLine() << format("0x%02x                ; context\n", OC[Offset]);
+  ++Offset;
+  return false;
+}
+
+bool Decoder::opcode_clear_unwound_to_call(const uint8_t *OC, unsigned &Offset,
+                                           unsigned Length, bool Prologue) {
+  SW.startLine() << format("0x%02x                ; clear unwound to call\n",
+                           OC[Offset]);
+  ++Offset;
+  return false;
+}
+
+void Decoder::decodeOpcodes(ArrayRef<uint8_t> Opcodes, unsigned Offset,
+                            bool Prologue) {
+  assert((!Prologue || Offset == 0) && "prologue should always use offset 0");
+  const RingEntry* DecodeRing = isAArch64 ? Ring64 : Ring;
+  bool Terminated = false;
+  for (unsigned OI = Offset, OE = Opcodes.size(); !Terminated && OI < OE; ) {
+    for (unsigned DI = 0;; ++DI) {
+      if ((isAArch64 && (DI >= array_lengthof(Ring64))) ||
+          (!isAArch64 && (DI >= array_lengthof(Ring)))) {
+        SW.startLine() << format("0x%02x                ; Bad opcode!\n",
+                                 Opcodes.data()[OI]);
+        ++OI;
+        break;
+      }
+
+      if ((Opcodes[OI] & DecodeRing[DI].Mask) == DecodeRing[DI].Value) {
+        if (OI + DecodeRing[DI].Length > OE) {
+          SW.startLine() << format("Opcode 0x%02x goes past the unwind data\n",
+                                    Opcodes[OI]);
+          OI += DecodeRing[DI].Length;
+          break;
+        }
+        Terminated =
+            (this->*DecodeRing[DI].Routine)(Opcodes.data(), OI, 0, Prologue);
+        break;
+      }
+    }
+  }
+}
+
+bool Decoder::dumpXDataRecord(const COFFObjectFile &COFF,
+                              const SectionRef &Section,
+                              uint64_t FunctionAddress, uint64_t VA) {
+  ArrayRef<uint8_t> Contents;
+  if (COFF.getSectionContents(COFF.getCOFFSection(Section), Contents))
+    return false;
+
+  uint64_t SectionVA = Section.getAddress();
+  uint64_t Offset = VA - SectionVA;
+  const ulittle32_t *Data =
+    reinterpret_cast<const ulittle32_t *>(Contents.data() + Offset);
+
+  // Sanity check to ensure that the .xdata header is present.
+  // A header is one or two words, followed by at least one word to describe
+  // the unwind codes. Applicable to both ARM and AArch64.
+  if (Contents.size() - Offset < 8)
+    report_fatal_error(".xdata must be at least 8 bytes in size");
+
+  const ExceptionDataRecord XData(Data, isAArch64);
+  DictScope XRS(SW, "ExceptionData");
+  SW.printNumber("FunctionLength",
+                 isAArch64 ? XData.FunctionLengthInBytesAArch64() :
+                 XData.FunctionLengthInBytesARM());
+  SW.printNumber("Version", XData.Vers());
+  SW.printBoolean("ExceptionData", XData.X());
+  SW.printBoolean("EpiloguePacked", XData.E());
+  if (!isAArch64)
+    SW.printBoolean("Fragment", XData.F());
+  SW.printNumber(XData.E() ? "EpilogueOffset" : "EpilogueScopes",
+                 XData.EpilogueCount());
+  uint64_t ByteCodeLength = XData.CodeWords() * sizeof(uint32_t);
+  SW.printNumber("ByteCodeLength", ByteCodeLength);
+
+  if ((int64_t)(Contents.size() - Offset - 4 * HeaderWords(XData) -
+                (XData.E() ? 0 : XData.EpilogueCount() * 4) -
+                (XData.X() ? 8 : 0)) < (int64_t)ByteCodeLength) {
+    SW.flush();
+    report_fatal_error("Malformed unwind data");
+  }
+
+  if (XData.E()) {
+    ArrayRef<uint8_t> UC = XData.UnwindByteCode();
+    if (isAArch64 || !XData.F()) {
+      ListScope PS(SW, "Prologue");
+      decodeOpcodes(UC, 0, /*Prologue=*/true);
+    }
+    if (XData.EpilogueCount()) {
+      ListScope ES(SW, "Epilogue");
+      decodeOpcodes(UC, XData.EpilogueCount(), /*Prologue=*/false);
+    }
+  } else {
+    {
+      ListScope PS(SW, "Prologue");
+      decodeOpcodes(XData.UnwindByteCode(), 0, /*Prologue=*/true);
+    }
+    ArrayRef<ulittle32_t> EpilogueScopes = XData.EpilogueScopes();
+    ListScope ESS(SW, "EpilogueScopes");
+    for (const EpilogueScope ES : EpilogueScopes) {
+      DictScope ESES(SW, "EpilogueScope");
+      SW.printNumber("StartOffset", ES.EpilogueStartOffset());
+      if (!isAArch64)
+        SW.printNumber("Condition", ES.Condition());
+      SW.printNumber("EpilogueStartIndex",
+                     isAArch64 ? ES.EpilogueStartIndexAArch64()
+                               : ES.EpilogueStartIndexARM());
+      if (ES.ES & ~0xffc3ffff)
+        SW.printNumber("ReservedBits", (ES.ES >> 18) & 0xF);
+
+      ListScope Opcodes(SW, "Opcodes");
+      decodeOpcodes(XData.UnwindByteCode(),
+                    isAArch64 ? ES.EpilogueStartIndexAArch64()
+                              : ES.EpilogueStartIndexARM(),
+                    /*Prologue=*/false);
+    }
+  }
+
+  if (XData.X()) {
+    const uint64_t Address = COFF.getImageBase() + XData.ExceptionHandlerRVA();
+    const uint32_t Parameter = XData.ExceptionHandlerParameter();
+    const size_t HandlerOffset = HeaderWords(XData)
+                               + (XData.E() ? 0 : XData.EpilogueCount())
+                               + XData.CodeWords();
+
+    ErrorOr<SymbolRef> Symbol = getRelocatedSymbol(
+        COFF, Section, Offset + HandlerOffset * sizeof(uint32_t));
+    if (!Symbol)
+      Symbol = getSymbol(COFF, Address, /*FunctionOnly=*/true);
+    if (!Symbol) {
+      ListScope EHS(SW, "ExceptionHandler");
+      SW.printHex("Routine", Address);
+      SW.printHex("Parameter", Parameter);
+      return true;
+    }
+
+    Expected<StringRef> Name = Symbol->getName();
+    if (!Name) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(Name.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+
+    ListScope EHS(SW, "ExceptionHandler");
+    SW.printString("Routine", formatSymbol(*Name, Address));
+    SW.printHex("Parameter", Parameter);
+  }
+
+  return true;
+}
+
+bool Decoder::dumpUnpackedEntry(const COFFObjectFile &COFF,
+                                const SectionRef Section, uint64_t Offset,
+                                unsigned Index, const RuntimeFunction &RF) {
+  assert(RF.Flag() == RuntimeFunctionFlag::RFF_Unpacked &&
+         "packed entry cannot be treated as an unpacked entry");
+
+  ErrorOr<SymbolRef> Function = getRelocatedSymbol(COFF, Section, Offset);
+  if (!Function)
+    Function = getSymbol(COFF, COFF.getImageBase() + RF.BeginAddress,
+                         /*FunctionOnly=*/true);
+
+  ErrorOr<SymbolRef> XDataRecord = getRelocatedSymbol(COFF, Section, Offset + 4);
+  if (!XDataRecord)
+    XDataRecord = getSymbol(COFF, RF.ExceptionInformationRVA());
+
+  if (!RF.BeginAddress && !Function)
+    return false;
+  if (!RF.UnwindData && !XDataRecord)
+    return false;
+
+  StringRef FunctionName;
+  uint64_t FunctionAddress;
+  if (Function) {
+    Expected<StringRef> FunctionNameOrErr = Function->getName();
+    if (!FunctionNameOrErr) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(FunctionNameOrErr.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+    FunctionName = *FunctionNameOrErr;
+    Expected<uint64_t> FunctionAddressOrErr = Function->getAddress();
+    if (!FunctionAddressOrErr) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(FunctionAddressOrErr.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+    FunctionAddress = *FunctionAddressOrErr;
+  } else {
+    FunctionAddress = COFF.getImageBase() + RF.BeginAddress;
+  }
+
+  SW.printString("Function", formatSymbol(FunctionName, FunctionAddress));
+
+  if (XDataRecord) {
+    Expected<StringRef> Name = XDataRecord->getName();
+    if (!Name) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(Name.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+
+    Expected<uint64_t> AddressOrErr = XDataRecord->getAddress();
+    if (!AddressOrErr) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(AddressOrErr.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+    uint64_t Address = *AddressOrErr;
+
+    SW.printString("ExceptionRecord", formatSymbol(*Name, Address));
+
+    Expected<section_iterator> SIOrErr = XDataRecord->getSection();
+    if (!SIOrErr) {
+      // TODO: Actually report errors helpfully.
+      consumeError(SIOrErr.takeError());
+      return false;
+    }
+    section_iterator SI = *SIOrErr;
+
+    // FIXME: Do we need to add an offset from the relocation?
+    return dumpXDataRecord(COFF, *SI, FunctionAddress,
+                           RF.ExceptionInformationRVA());
+  } else {
+    uint64_t Address = COFF.getImageBase() + RF.ExceptionInformationRVA();
+    SW.printString("ExceptionRecord", formatSymbol("", Address));
+
+    ErrorOr<SectionRef> Section = getSectionContaining(COFF, Address);
+    if (!Section)
+      return false;
+
+    return dumpXDataRecord(COFF, *Section, FunctionAddress, Address);
+  }
+}
+
+bool Decoder::dumpPackedEntry(const object::COFFObjectFile &COFF,
+                              const SectionRef Section, uint64_t Offset,
+                              unsigned Index, const RuntimeFunction &RF) {
+  assert((RF.Flag() == RuntimeFunctionFlag::RFF_Packed ||
+          RF.Flag() == RuntimeFunctionFlag::RFF_PackedFragment) &&
+         "unpacked entry cannot be treated as a packed entry");
+
+  ErrorOr<SymbolRef> Function = getRelocatedSymbol(COFF, Section, Offset);
+  if (!Function)
+    Function = getSymbol(COFF, RF.BeginAddress, /*FunctionOnly=*/true);
+
+  StringRef FunctionName;
+  uint64_t FunctionAddress;
+  if (Function) {
+    Expected<StringRef> FunctionNameOrErr = Function->getName();
+    if (!FunctionNameOrErr) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(FunctionNameOrErr.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+    FunctionName = *FunctionNameOrErr;
+    Expected<uint64_t> FunctionAddressOrErr = Function->getAddress();
+    if (!FunctionAddressOrErr) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(FunctionAddressOrErr.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+    FunctionAddress = *FunctionAddressOrErr;
+  } else {
+    FunctionAddress = COFF.getPE32Header()->ImageBase + RF.BeginAddress;
+  }
+
+  SW.printString("Function", formatSymbol(FunctionName, FunctionAddress));
+  if (!isAArch64)
+    SW.printBoolean("Fragment",
+                    RF.Flag() == RuntimeFunctionFlag::RFF_PackedFragment);
+  SW.printNumber("FunctionLength", RF.FunctionLength());
+  SW.startLine() << "ReturnType: " << RF.Ret() << '\n';
+  SW.printBoolean("HomedParameters", RF.H());
+  SW.startLine() << "SavedRegisters: ";
+                 printRegisters(SavedRegisterMask(RF));
+  OS << '\n';
+  SW.printNumber("StackAdjustment", StackAdjustment(RF) << 2);
+
+  return true;
+}
+
+bool Decoder::dumpPackedARM64Entry(const object::COFFObjectFile &COFF,
+                                   const SectionRef Section, uint64_t Offset,
+                                   unsigned Index,
+                                   const RuntimeFunctionARM64 &RF) {
+  assert((RF.Flag() == RuntimeFunctionFlag::RFF_Packed ||
+          RF.Flag() == RuntimeFunctionFlag::RFF_PackedFragment) &&
+         "unpacked entry cannot be treated as a packed entry");
+
+  ErrorOr<SymbolRef> Function = getRelocatedSymbol(COFF, Section, Offset);
+  if (!Function)
+    Function = getSymbol(COFF, RF.BeginAddress, /*FunctionOnly=*/true);
+
+  StringRef FunctionName;
+  uint64_t FunctionAddress;
+  if (Function) {
+    Expected<StringRef> FunctionNameOrErr = Function->getName();
+    if (!FunctionNameOrErr) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(FunctionNameOrErr.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+    FunctionName = *FunctionNameOrErr;
+    Expected<uint64_t> FunctionAddressOrErr = Function->getAddress();
+    if (!FunctionAddressOrErr) {
+      std::string Buf;
+      llvm::raw_string_ostream OS(Buf);
+      logAllUnhandledErrors(FunctionAddressOrErr.takeError(), OS);
+      OS.flush();
+      report_fatal_error(Buf);
+    }
+    FunctionAddress = *FunctionAddressOrErr;
+  } else {
+    FunctionAddress = COFF.getPE32PlusHeader()->ImageBase + RF.BeginAddress;
+  }
+
+  SW.printString("Function", formatSymbol(FunctionName, FunctionAddress));
+  SW.printBoolean("Fragment",
+                  RF.Flag() == RuntimeFunctionFlag::RFF_PackedFragment);
+  SW.printNumber("FunctionLength", RF.FunctionLength());
+  SW.printNumber("RegF", RF.RegF());
+  SW.printNumber("RegI", RF.RegI());
+  SW.printBoolean("HomedParameters", RF.H());
+  SW.printNumber("CR", RF.CR());
+  SW.printNumber("FrameSize", RF.FrameSize() << 4);
+  ListScope PS(SW, "Prologue");
+
+  // Synthesize the equivalent prologue according to the documentation
+  // at https://docs.microsoft.com/en-us/cpp/build/arm64-exception-handling,
+  // printed in reverse order compared to the docs, to match how prologues
+  // are printed for the non-packed case.
+  int IntSZ = 8 * RF.RegI();
+  if (RF.CR() == 1)
+    IntSZ += 8;
+  int FpSZ = 8 * RF.RegF();
+  if (RF.RegF())
+    FpSZ += 8;
+  int SavSZ = (IntSZ + FpSZ + 8 * 8 * RF.H() + 0xf) & ~0xf;
+  int LocSZ = (RF.FrameSize() << 4) - SavSZ;
+
+  if (RF.CR() == 3) {
+    SW.startLine() << "mov x29, sp\n";
+    if (LocSZ <= 512) {
+      SW.startLine() << format("stp x29, lr, [sp, #-%d]!\n", LocSZ);
+    } else {
+      SW.startLine() << "stp x29, lr, [sp, #0]\n";
+    }
+  }
+  if (LocSZ > 4080) {
+    SW.startLine() << format("sub sp, sp, #%d\n", LocSZ - 4080);
+    SW.startLine() << "sub sp, sp, #4080\n";
+  } else if ((RF.CR() != 3 && LocSZ > 0) || LocSZ > 512) {
+    SW.startLine() << format("sub sp, sp, #%d\n", LocSZ);
+  }
+  if (RF.H()) {
+    SW.startLine() << format("stp x6, x7, [sp, #%d]\n", IntSZ + FpSZ + 48);
+    SW.startLine() << format("stp x4, x5, [sp, #%d]\n", IntSZ + FpSZ + 32);
+    SW.startLine() << format("stp x2, x3, [sp, #%d]\n", IntSZ + FpSZ + 16);
+    if (RF.RegI() > 0 || RF.RegF() > 0 || RF.CR() == 1) {
+      SW.startLine() << format("stp x0, x1, [sp, #%d]\n", IntSZ + FpSZ);
+    } else {
+      // This case isn't documented; if neither RegI nor RegF nor CR=1
+      // have decremented the stack pointer by SavSZ, we need to do it here
+      // (as the final stack adjustment of LocSZ excludes SavSZ).
+      SW.startLine() << format("stp x0, x1, [sp, #-%d]!\n", SavSZ);
+    }
+  }
+  int FloatRegs = RF.RegF() > 0 ? RF.RegF() + 1 : 0;
+  for (int I = (FloatRegs + 1) / 2 - 1; I >= 0; I--) {
+    if (I == (FloatRegs + 1) / 2 - 1 && FloatRegs % 2 == 1) {
+      // The last register, an odd register without a pair
+      SW.startLine() << format("str d%d, [sp, #%d]\n", 8 + 2 * I,
+                               IntSZ + 16 * I);
+    } else if (I == 0 && RF.RegI() == 0 && RF.CR() != 1) {
+      SW.startLine() << format("stp d%d, d%d, [sp, #-%d]!\n", 8 + 2 * I,
+                               8 + 2 * I + 1, SavSZ);
+    } else {
+      SW.startLine() << format("stp d%d, d%d, [sp, #%d]\n", 8 + 2 * I,
+                               8 + 2 * I + 1, IntSZ + 16 * I);
+    }
+  }
+  if (RF.CR() == 1 && (RF.RegI() % 2) == 0) {
+    if (RF.RegI() == 0)
+      SW.startLine() << format("str lr, [sp, #-%d]!\n", SavSZ);
+    else
+      SW.startLine() << format("str lr, [sp, #%d]\n", IntSZ - 8);
+  }
+  for (int I = (RF.RegI() + 1) / 2 - 1; I >= 0; I--) {
+    if (I == (RF.RegI() + 1) / 2 - 1 && RF.RegI() % 2 == 1) {
+      // The last register, an odd register without a pair
+      if (RF.CR() == 1) {
+        if (I == 0) { // If this is the only register pair
+          // CR=1 combined with RegI=1 doesn't map to a documented case;
+          // it doesn't map to any regular unwind info opcode, and the
+          // actual unwinder doesn't support it.
+          SW.startLine() << "INVALID!\n";
+        } else
+          SW.startLine() << format("stp x%d, lr, [sp, #%d]\n", 19 + 2 * I,
+                                   16 * I);
+      } else {
+        if (I == 0)
+          SW.startLine() << format("str x%d, [sp, #-%d]!\n", 19 + 2 * I, SavSZ);
+        else
+          SW.startLine() << format("str x%d, [sp, #%d]\n", 19 + 2 * I, 16 * I);
+      }
+    } else if (I == 0) {
+      // The first register pair
+      SW.startLine() << format("stp x19, x20, [sp, #-%d]!\n", SavSZ);
+    } else {
+      SW.startLine() << format("stp x%d, x%d, [sp, #%d]\n", 19 + 2 * I,
+                               19 + 2 * I + 1, 16 * I);
+    }
+  }
+  SW.startLine() << "end\n";
+
+  return true;
+}
+
+bool Decoder::dumpProcedureDataEntry(const COFFObjectFile &COFF,
+                                     const SectionRef Section, unsigned Index,
+                                     ArrayRef<uint8_t> Contents) {
+  uint64_t Offset = PDataEntrySize * Index;
+  const ulittle32_t *Data =
+    reinterpret_cast<const ulittle32_t *>(Contents.data() + Offset);
+
+  const RuntimeFunction Entry(Data);
+  DictScope RFS(SW, "RuntimeFunction");
+  if (Entry.Flag() == RuntimeFunctionFlag::RFF_Unpacked)
+    return dumpUnpackedEntry(COFF, Section, Offset, Index, Entry);
+  if (isAArch64) {
+    const RuntimeFunctionARM64 EntryARM64(Data);
+    return dumpPackedARM64Entry(COFF, Section, Offset, Index, EntryARM64);
+  }
+  return dumpPackedEntry(COFF, Section, Offset, Index, Entry);
+}
+
+void Decoder::dumpProcedureData(const COFFObjectFile &COFF,
+                                const SectionRef Section) {
+  ArrayRef<uint8_t> Contents;
+  if (COFF.getSectionContents(COFF.getCOFFSection(Section), Contents))
+    return;
+
+  if (Contents.size() % PDataEntrySize) {
+    errs() << ".pdata content is not " << PDataEntrySize << "-byte aligned\n";
+    return;
+  }
+
+  for (unsigned EI = 0, EE = Contents.size() / PDataEntrySize; EI < EE; ++EI)
+    if (!dumpProcedureDataEntry(COFF, Section, EI, Contents))
+      break;
+}
+
+Error Decoder::dumpProcedureData(const COFFObjectFile &COFF) {
+  for (const auto &Section : COFF.sections()) {
+    Expected<StringRef> NameOrErr =
+        COFF.getSectionName(COFF.getCOFFSection(Section));
+    if (!NameOrErr)
+      return NameOrErr.takeError();
+
+    if (NameOrErr->startswith(".pdata"))
+      dumpProcedureData(COFF, Section);
+  }
+  return Error::success();
+}
+}
+}
+}
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/ARMWinEHPrinter.h b/contrib/libs/llvm12/tools/llvm-readobj/ARMWinEHPrinter.h
new file mode 100644
index 0000000000..3263841a26
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/ARMWinEHPrinter.h
@@ -0,0 +1,177 @@
+//===--- ARMWinEHPrinter.h - Windows on ARM Unwind Information Printer ----===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_READOBJ_ARMWINEHPRINTER_H
+#define LLVM_TOOLS_LLVM_READOBJ_ARMWINEHPRINTER_H
+
+#include "llvm/Object/COFF.h"
+#include "llvm/Support/ErrorOr.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+namespace llvm {
+namespace ARM {
+namespace WinEH {
+class RuntimeFunction;
+class RuntimeFunctionARM64;
+
+class Decoder {
+  static const size_t PDataEntrySize;
+
+  ScopedPrinter &SW;
+  raw_ostream &OS;
+  bool isAArch64;
+
+  struct RingEntry {
+    uint8_t Mask;
+    uint8_t Value;
+    uint8_t Length;
+    bool (Decoder::*Routine)(const uint8_t *, unsigned &, unsigned, bool);
+  };
+  static const RingEntry Ring[];
+  static const RingEntry Ring64[];
+
+  bool opcode_0xxxxxxx(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_10Lxxxxx(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_1100xxxx(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11010Lxx(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11011Lxx(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11100xxx(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_111010xx(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_1110110L(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11101110(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11101111(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11110101(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11110110(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11110111(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11111000(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11111001(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11111010(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11111011(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11111100(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11111101(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11111110(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_11111111(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+
+  // ARM64 unwind codes start here.
+  bool opcode_alloc_s(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                      bool Prologue);
+  bool opcode_save_r19r20_x(const uint8_t *Opcodes, unsigned &Offset,
+                            unsigned Length, bool Prologue);
+  bool opcode_save_fplr(const uint8_t *Opcodes, unsigned &Offset,
+                        unsigned Length, bool Prologue);
+  bool opcode_save_fplr_x(const uint8_t *Opcodes, unsigned &Offset,
+                          unsigned Length, bool Prologue);
+  bool opcode_alloc_m(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                      bool Prologue);
+  bool opcode_save_regp(const uint8_t *Opcodes, unsigned &Offset,
+                        unsigned Length, bool Prologue);
+  bool opcode_save_regp_x(const uint8_t *Opcodes, unsigned &Offset,
+                          unsigned Length, bool Prologue);
+  bool opcode_save_reg(const uint8_t *Opcodes, unsigned &Offset,
+                       unsigned Length, bool Prologue);
+  bool opcode_save_reg_x(const uint8_t *Opcodes, unsigned &Offset,
+                         unsigned Length, bool Prologue);
+  bool opcode_save_lrpair(const uint8_t *Opcodes, unsigned &Offset,
+                          unsigned Length, bool Prologue);
+  bool opcode_save_fregp(const uint8_t *Opcodes, unsigned &Offset,
+                         unsigned Length, bool Prologue);
+  bool opcode_save_fregp_x(const uint8_t *Opcodes, unsigned &Offset,
+                           unsigned Length, bool Prologue);
+  bool opcode_save_freg(const uint8_t *Opcodes, unsigned &Offset,
+                        unsigned Length, bool Prologue);
+  bool opcode_save_freg_x(const uint8_t *Opcodes, unsigned &Offset,
+                          unsigned Length, bool Prologue);
+  bool opcode_alloc_l(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                      bool Prologue);
+  bool opcode_setfp(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                    bool Prologue);
+  bool opcode_addfp(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                    bool Prologue);
+  bool opcode_nop(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                  bool Prologue);
+  bool opcode_end(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                  bool Prologue);
+  bool opcode_end_c(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                    bool Prologue);
+  bool opcode_save_next(const uint8_t *Opcodes, unsigned &Offset,
+                        unsigned Length, bool Prologue);
+  bool opcode_trap_frame(const uint8_t *Opcodes, unsigned &Offset,
+                         unsigned Length, bool Prologue);
+  bool opcode_machine_frame(const uint8_t *Opcodes, unsigned &Offset,
+                            unsigned Length, bool Prologue);
+  bool opcode_context(const uint8_t *Opcodes, unsigned &Offset, unsigned Length,
+                      bool Prologue);
+  bool opcode_clear_unwound_to_call(const uint8_t *Opcodes, unsigned &Offset,
+                                    unsigned Length, bool Prologue);
+
+  void decodeOpcodes(ArrayRef<uint8_t> Opcodes, unsigned Offset,
+                     bool Prologue);
+
+  void printRegisters(const std::pair<uint16_t, uint32_t> &RegisterMask);
+
+  ErrorOr<object::SectionRef>
+  getSectionContaining(const object::COFFObjectFile &COFF, uint64_t Address);
+
+  ErrorOr<object::SymbolRef>
+  getSymbol(const object::COFFObjectFile &COFF, uint64_t Address,
+            bool FunctionOnly = false);
+
+  ErrorOr<object::SymbolRef>
+  getRelocatedSymbol(const object::COFFObjectFile &COFF,
+                     const object::SectionRef &Section, uint64_t Offset);
+
+  bool dumpXDataRecord(const object::COFFObjectFile &COFF,
+                       const object::SectionRef &Section,
+                       uint64_t FunctionAddress, uint64_t VA);
+  bool dumpUnpackedEntry(const object::COFFObjectFile &COFF,
+                         const object::SectionRef Section, uint64_t Offset,
+                         unsigned Index, const RuntimeFunction &Entry);
+  bool dumpPackedEntry(const object::COFFObjectFile &COFF,
+                       const object::SectionRef Section, uint64_t Offset,
+                       unsigned Index, const RuntimeFunction &Entry);
+  bool dumpPackedARM64Entry(const object::COFFObjectFile &COFF,
+                            const object::SectionRef Section, uint64_t Offset,
+                            unsigned Index, const RuntimeFunctionARM64 &Entry);
+  bool dumpProcedureDataEntry(const object::COFFObjectFile &COFF,
+                              const object::SectionRef Section, unsigned Entry,
+                              ArrayRef<uint8_t> Contents);
+  void dumpProcedureData(const object::COFFObjectFile &COFF,
+                         const object::SectionRef Section);
+
+public:
+  Decoder(ScopedPrinter &SW, bool isAArch64) : SW(SW),
+                                               OS(SW.getOStream()),
+                                               isAArch64(isAArch64) {}
+  Error dumpProcedureData(const object::COFFObjectFile &COFF);
+};
+}
+}
+}
+
+#endif
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/COFFDumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/COFFDumper.cpp
new file mode 100644
index 0000000000..684967f933
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/COFFDumper.cpp
@@ -0,0 +1,2057 @@
+//===-- COFFDumper.cpp - COFF-specific dumper -------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file implements the COFF-specific dumper for llvm-readobj.
+///
+//===----------------------------------------------------------------------===//
+
+#include "ARMWinEHPrinter.h"
+#include "ObjDumper.h"
+#include "StackMapPrinter.h"
+#include "Win64EHDumper.h"
+#include "llvm-readobj.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/BinaryFormat/COFF.h"
+#include "llvm/DebugInfo/CodeView/CVTypeVisitor.h"
+#include "llvm/DebugInfo/CodeView/CodeView.h"
+#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
+#include "llvm/DebugInfo/CodeView/DebugFrameDataSubsection.h"
+#include "llvm/DebugInfo/CodeView/DebugInlineeLinesSubsection.h"
+#include "llvm/DebugInfo/CodeView/DebugLinesSubsection.h"
+#include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
+#include "llvm/DebugInfo/CodeView/LazyRandomTypeCollection.h"
+#include "llvm/DebugInfo/CodeView/Line.h"
+#include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h"
+#include "llvm/DebugInfo/CodeView/RecordSerialization.h"
+#include "llvm/DebugInfo/CodeView/SymbolDumpDelegate.h"
+#include "llvm/DebugInfo/CodeView/SymbolDumper.h"
+#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
+#include "llvm/DebugInfo/CodeView/TypeDumpVisitor.h"
+#include "llvm/DebugInfo/CodeView/TypeHashing.h"
+#include "llvm/DebugInfo/CodeView/TypeIndex.h"
+#include "llvm/DebugInfo/CodeView/TypeRecord.h"
+#include "llvm/DebugInfo/CodeView/TypeStreamMerger.h"
+#include "llvm/DebugInfo/CodeView/TypeTableCollection.h"
+#include "llvm/Object/COFF.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Object/WindowsResource.h"
+#include "llvm/Support/BinaryStreamReader.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/ConvertUTF.h"
+#include "llvm/Support/FormatVariadic.h"
+#include "llvm/Support/LEB128.h"
+#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/Win64EH.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace llvm;
+using namespace llvm::object;
+using namespace llvm::codeview;
+using namespace llvm::support;
+using namespace llvm::Win64EH;
+
+namespace {
+
+struct LoadConfigTables {
+  uint64_t SEHTableVA = 0;
+  uint64_t SEHTableCount = 0;
+  uint32_t GuardFlags = 0;
+  uint64_t GuardFidTableVA = 0;
+  uint64_t GuardFidTableCount = 0;
+  uint64_t GuardIatTableVA = 0;
+  uint64_t GuardIatTableCount = 0;
+  uint64_t GuardLJmpTableVA = 0;
+  uint64_t GuardLJmpTableCount = 0;
+};
+
+class COFFDumper : public ObjDumper {
+public:
+  friend class COFFObjectDumpDelegate;
+  COFFDumper(const llvm::object::COFFObjectFile *Obj, ScopedPrinter &Writer)
+      : ObjDumper(Writer, Obj->getFileName()), Obj(Obj), Writer(Writer),
+        Types(100) {}
+
+  void printFileHeaders() override;
+  void printSectionHeaders() override;
+  void printRelocations() override;
+  void printUnwindInfo() override;
+
+  void printNeededLibraries() override;
+
+  void printCOFFImports() override;
+  void printCOFFExports() override;
+  void printCOFFDirectives() override;
+  void printCOFFBaseReloc() override;
+  void printCOFFDebugDirectory() override;
+  void printCOFFTLSDirectory() override;
+  void printCOFFResources() override;
+  void printCOFFLoadConfig() override;
+  void printCodeViewDebugInfo() override;
+  void mergeCodeViewTypes(llvm::codeview::MergingTypeTableBuilder &CVIDs,
+                          llvm::codeview::MergingTypeTableBuilder &CVTypes,
+                          llvm::codeview::GlobalTypeTableBuilder &GlobalCVIDs,
+                          llvm::codeview::GlobalTypeTableBuilder &GlobalCVTypes,
+                          bool GHash) override;
+  void printStackMap() const override;
+  void printAddrsig() override;
+  void printCGProfile() override;
+
+private:
+  StringRef getSymbolName(uint32_t Index);
+  void printSymbols() override;
+  void printDynamicSymbols() override;
+  void printSymbol(const SymbolRef &Sym);
+  void printRelocation(const SectionRef &Section, const RelocationRef &Reloc,
+                       uint64_t Bias = 0);
+  void printDataDirectory(uint32_t Index, const std::string &FieldName);
+
+  void printDOSHeader(const dos_header *DH);
+  template <class PEHeader> void printPEHeader(const PEHeader *Hdr);
+  void printBaseOfDataField(const pe32_header *Hdr);
+  void printBaseOfDataField(const pe32plus_header *Hdr);
+  template <typename T>
+  void printCOFFLoadConfig(const T *Conf, LoadConfigTables &Tables);
+  template <typename IntTy>
+  void printCOFFTLSDirectory(const coff_tls_directory<IntTy> *TlsTable);
+  typedef void (*PrintExtraCB)(raw_ostream &, const uint8_t *);
+  void printRVATable(uint64_t TableVA, uint64_t Count, uint64_t EntrySize,
+                     PrintExtraCB PrintExtra = 0);
+
+  void printCodeViewSymbolSection(StringRef SectionName, const SectionRef &Section);
+  void printCodeViewTypeSection(StringRef SectionName, const SectionRef &Section);
+  StringRef getFileNameForFileOffset(uint32_t FileOffset);
+  void printFileNameForOffset(StringRef Label, uint32_t FileOffset);
+  void printTypeIndex(StringRef FieldName, TypeIndex TI) {
+    // Forward to CVTypeDumper for simplicity.
+    codeview::printTypeIndex(Writer, FieldName, TI, Types);
+  }
+
+  void printCodeViewSymbolsSubsection(StringRef Subsection,
+                                      const SectionRef &Section,
+                                      StringRef SectionContents);
+
+  void printCodeViewFileChecksums(StringRef Subsection);
+
+  void printCodeViewInlineeLines(StringRef Subsection);
+
+  void printRelocatedField(StringRef Label, const coff_section *Sec,
+                           uint32_t RelocOffset, uint32_t Offset,
+                           StringRef *RelocSym = nullptr);
+
+  uint32_t countTotalTableEntries(ResourceSectionRef RSF,
+                                  const coff_resource_dir_table &Table,
+                                  StringRef Level);
+
+  void printResourceDirectoryTable(ResourceSectionRef RSF,
+                                   const coff_resource_dir_table &Table,
+                                   StringRef Level);
+
+  void printBinaryBlockWithRelocs(StringRef Label, const SectionRef &Sec,
+                                  StringRef SectionContents, StringRef Block);
+
+  /// Given a .debug$S section, find the string table and file checksum table.
+  void initializeFileAndStringTables(BinaryStreamReader &Reader);
+
+  void cacheRelocations();
+
+  std::error_code resolveSymbol(const coff_section *Section, uint64_t Offset,
+                                SymbolRef &Sym);
+  std::error_code resolveSymbolName(const coff_section *Section,
+                                    uint64_t Offset, StringRef &Name);
+  std::error_code resolveSymbolName(const coff_section *Section,
+                                    StringRef SectionContents,
+                                    const void *RelocPtr, StringRef &Name);
+  void printImportedSymbols(iterator_range<imported_symbol_iterator> Range);
+  void printDelayImportedSymbols(
+      const DelayImportDirectoryEntryRef &I,
+      iterator_range<imported_symbol_iterator> Range);
+
+  typedef DenseMap<const coff_section*, std::vector<RelocationRef> > RelocMapTy;
+
+  const llvm::object::COFFObjectFile *Obj;
+  bool RelocCached = false;
+  RelocMapTy RelocMap;
+
+  DebugChecksumsSubsectionRef CVFileChecksumTable;
+
+  DebugStringTableSubsectionRef CVStringTable;
+
+  /// Track the compilation CPU type. S_COMPILE3 symbol records typically come
+  /// first, but if we don't see one, just assume an X64 CPU type. It is common.
+  CPUType CompilationCPUType = CPUType::X64;
+
+  ScopedPrinter &Writer;
+  BinaryByteStream TypeContents;
+  LazyRandomTypeCollection Types;
+};
+
+class COFFObjectDumpDelegate : public SymbolDumpDelegate {
+public:
+  COFFObjectDumpDelegate(COFFDumper &CD, const SectionRef &SR,
+                         const COFFObjectFile *Obj, StringRef SectionContents)
+      : CD(CD), SR(SR), SectionContents(SectionContents) {
+    Sec = Obj->getCOFFSection(SR);
+  }
+
+  uint32_t getRecordOffset(BinaryStreamReader Reader) override {
+    ArrayRef<uint8_t> Data;
+    if (auto EC = Reader.readLongestContiguousChunk(Data)) {
+      llvm::consumeError(std::move(EC));
+      return 0;
+    }
+    return Data.data() - SectionContents.bytes_begin();
+  }
+
+  void printRelocatedField(StringRef Label, uint32_t RelocOffset,
+                           uint32_t Offset, StringRef *RelocSym) override {
+    CD.printRelocatedField(Label, Sec, RelocOffset, Offset, RelocSym);
+  }
+
+  void printBinaryBlockWithRelocs(StringRef Label,
+                                  ArrayRef<uint8_t> Block) override {
+    StringRef SBlock(reinterpret_cast<const char *>(Block.data()),
+                     Block.size());
+    if (opts::CodeViewSubsectionBytes)
+      CD.printBinaryBlockWithRelocs(Label, SR, SectionContents, SBlock);
+  }
+
+  StringRef getFileNameForFileOffset(uint32_t FileOffset) override {
+    return CD.getFileNameForFileOffset(FileOffset);
+  }
+
+  DebugStringTableSubsectionRef getStringTable() override {
+    return CD.CVStringTable;
+  }
+
+private:
+  COFFDumper &CD;
+  const SectionRef &SR;
+  const coff_section *Sec;
+  StringRef SectionContents;
+};
+
+} // end namespace
+
+namespace llvm {
+
+std::unique_ptr<ObjDumper> createCOFFDumper(const object::COFFObjectFile &Obj,
+                                            ScopedPrinter &Writer) {
+  return std::make_unique<COFFDumper>(&Obj, Writer);
+}
+
+} // namespace llvm
+
+// Given a section and an offset into this section the function returns the
+// symbol used for the relocation at the offset.
+std::error_code COFFDumper::resolveSymbol(const coff_section *Section,
+                                          uint64_t Offset, SymbolRef &Sym) {
+  cacheRelocations();
+  const auto &Relocations = RelocMap[Section];
+  auto SymI = Obj->symbol_end();
+  for (const auto &Relocation : Relocations) {
+    uint64_t RelocationOffset = Relocation.getOffset();
+
+    if (RelocationOffset == Offset) {
+      SymI = Relocation.getSymbol();
+      break;
+    }
+  }
+  if (SymI == Obj->symbol_end())
+    return inconvertibleErrorCode();
+  Sym = *SymI;
+  return std::error_code();
+}
+
+// Given a section and an offset into this section the function returns the name
+// of the symbol used for the relocation at the offset.
+std::error_code COFFDumper::resolveSymbolName(const coff_section *Section,
+                                              uint64_t Offset,
+                                              StringRef &Name) {
+  SymbolRef Symbol;
+  if (std::error_code EC = resolveSymbol(Section, Offset, Symbol))
+    return EC;
+  Expected<StringRef> NameOrErr = Symbol.getName();
+  if (!NameOrErr)
+    return errorToErrorCode(NameOrErr.takeError());
+  Name = *NameOrErr;
+  return std::error_code();
+}
+
+// Helper for when you have a pointer to real data and you want to know about
+// relocations against it.
+std::error_code COFFDumper::resolveSymbolName(const coff_section *Section,
+                                              StringRef SectionContents,
+                                              const void *RelocPtr,
+                                              StringRef &Name) {
+  assert(SectionContents.data() < RelocPtr &&
+         RelocPtr < SectionContents.data() + SectionContents.size() &&
+         "pointer to relocated object is not in section");
+  uint64_t Offset = ptrdiff_t(reinterpret_cast<const char *>(RelocPtr) -
+                              SectionContents.data());
+  return resolveSymbolName(Section, Offset, Name);
+}
+
+void COFFDumper::printRelocatedField(StringRef Label, const coff_section *Sec,
+                                     uint32_t RelocOffset, uint32_t Offset,
+                                     StringRef *RelocSym) {
+  StringRef SymStorage;
+  StringRef &Symbol = RelocSym ? *RelocSym : SymStorage;
+  if (!resolveSymbolName(Sec, RelocOffset, Symbol))
+    W.printSymbolOffset(Label, Symbol, Offset);
+  else
+    W.printHex(Label, RelocOffset);
+}
+
+void COFFDumper::printBinaryBlockWithRelocs(StringRef Label,
+                                            const SectionRef &Sec,
+                                            StringRef SectionContents,
+                                            StringRef Block) {
+  W.printBinaryBlock(Label, Block);
+
+  assert(SectionContents.begin() < Block.begin() &&
+         SectionContents.end() >= Block.end() &&
+         "Block is not contained in SectionContents");
+  uint64_t OffsetStart = Block.data() - SectionContents.data();
+  uint64_t OffsetEnd = OffsetStart + Block.size();
+
+  W.flush();
+  cacheRelocations();
+  ListScope D(W, "BlockRelocations");
+  const coff_section *Section = Obj->getCOFFSection(Sec);
+  const auto &Relocations = RelocMap[Section];
+  for (const auto &Relocation : Relocations) {
+    uint64_t RelocationOffset = Relocation.getOffset();
+    if (OffsetStart <= RelocationOffset && RelocationOffset < OffsetEnd)
+      printRelocation(Sec, Relocation, OffsetStart);
+  }
+}
+
+static const EnumEntry<COFF::MachineTypes> ImageFileMachineType[] = {
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_UNKNOWN  ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AM33     ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_AMD64    ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARM      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARM64    ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_ARMNT    ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_EBC      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_I386     ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_IA64     ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_M32R     ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPS16   ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU  ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_MIPSFPU16),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPC  ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_POWERPCFP),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_R4000    ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH3DSP   ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH4      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_SH5      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_THUMB    ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_MACHINE_WCEMIPSV2)
+};
+
+static const EnumEntry<COFF::Characteristics> ImageFileCharacteristics[] = {
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_RELOCS_STRIPPED        ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_EXECUTABLE_IMAGE       ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LINE_NUMS_STRIPPED     ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LOCAL_SYMS_STRIPPED    ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_AGGRESSIVE_WS_TRIM     ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_LARGE_ADDRESS_AWARE    ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_LO      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_32BIT_MACHINE          ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DEBUG_STRIPPED         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_NET_RUN_FROM_SWAP      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_SYSTEM                 ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_DLL                    ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_UP_SYSTEM_ONLY         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_FILE_BYTES_REVERSED_HI      )
+};
+
+static const EnumEntry<COFF::WindowsSubsystem> PEWindowsSubsystem[] = {
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_UNKNOWN                ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_NATIVE                 ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_GUI            ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CUI            ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_POSIX_CUI              ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_WINDOWS_CE_GUI         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_APPLICATION        ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER     ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_EFI_ROM                ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SUBSYSTEM_XBOX                   ),
+};
+
+static const EnumEntry<COFF::DLLCharacteristics> PEDLLCharacteristics[] = {
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY      ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NX_COMPAT            ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_ISOLATION         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_SEH               ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_NO_BIND              ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_APPCONTAINER         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_WDM_DRIVER           ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_GUARD_CF             ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE),
+};
+
+static const EnumEntry<COFF::ExtendedDLLCharacteristics>
+    PEExtendedDLLCharacteristics[] = {
+        LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_DLL_CHARACTERISTICS_EX_CET_COMPAT),
+};
+
+static const EnumEntry<COFF::SectionCharacteristics>
+ImageSectionCharacteristics[] = {
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_TYPE_NOLOAD           ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_TYPE_NO_PAD           ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_CODE              ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_INITIALIZED_DATA  ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_CNT_UNINITIALIZED_DATA),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_OTHER             ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_INFO              ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_REMOVE            ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_COMDAT            ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_GPREL                 ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PURGEABLE         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_16BIT             ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_LOCKED            ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_PRELOAD           ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1BYTES          ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2BYTES          ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4BYTES          ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8BYTES          ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_16BYTES         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_32BYTES         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_64BYTES         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_128BYTES        ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_256BYTES        ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_512BYTES        ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_1024BYTES       ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_2048BYTES       ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_4096BYTES       ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_ALIGN_8192BYTES       ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_LNK_NRELOC_OVFL       ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_DISCARDABLE       ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_CACHED        ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_NOT_PAGED         ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_SHARED            ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_EXECUTE           ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_READ              ),
+  LLVM_READOBJ_ENUM_ENT(COFF, IMAGE_SCN_MEM_WRITE             )
+};
+
+static const EnumEntry<COFF::SymbolBaseType> ImageSymType[] = {
+  { "Null"  , COFF::IMAGE_SYM_TYPE_NULL   },
+  { "Void"  , COFF::IMAGE_SYM_TYPE_VOID   },
+  { "Char"  , COFF::IMAGE_SYM_TYPE_CHAR   },
+  { "Short" , COFF::IMAGE_SYM_TYPE_SHORT  },
+  { "Int"   , COFF::IMAGE_SYM_TYPE_INT    },
+  { "Long"  , COFF::IMAGE_SYM_TYPE_LONG   },
+  { "Float" , COFF::IMAGE_SYM_TYPE_FLOAT  },
+  { "Double", COFF::IMAGE_SYM_TYPE_DOUBLE },
+  { "Struct", COFF::IMAGE_SYM_TYPE_STRUCT },
+  { "Union" , COFF::IMAGE_SYM_TYPE_UNION  },
+  { "Enum"  , COFF::IMAGE_SYM_TYPE_ENUM   },
+  { "MOE"   , COFF::IMAGE_SYM_TYPE_MOE    },
+  { "Byte"  , COFF::IMAGE_SYM_TYPE_BYTE   },
+  { "Word"  , COFF::IMAGE_SYM_TYPE_WORD   },
+  { "UInt"  , COFF::IMAGE_SYM_TYPE_UINT   },
+  { "DWord" , COFF::IMAGE_SYM_TYPE_DWORD  }
+};
+
+static const EnumEntry<COFF::SymbolComplexType> ImageSymDType[] = {
+  { "Null"    , COFF::IMAGE_SYM_DTYPE_NULL     },
+  { "Pointer" , COFF::IMAGE_SYM_DTYPE_POINTER  },
+  { "Function", COFF::IMAGE_SYM_DTYPE_FUNCTION },
+  { "Array"   , COFF::IMAGE_SYM_DTYPE_ARRAY    }
+};
+
+static const EnumEntry<COFF::SymbolStorageClass> ImageSymClass[] = {
+  { "EndOfFunction"  , COFF::IMAGE_SYM_CLASS_END_OF_FUNCTION  },
+  { "Null"           , COFF::IMAGE_SYM_CLASS_NULL             },
+  { "Automatic"      , COFF::IMAGE_SYM_CLASS_AUTOMATIC        },
+  { "External"       , COFF::IMAGE_SYM_CLASS_EXTERNAL         },
+  { "Static"         , COFF::IMAGE_SYM_CLASS_STATIC           },
+  { "Register"       , COFF::IMAGE_SYM_CLASS_REGISTER         },
+  { "ExternalDef"    , COFF::IMAGE_SYM_CLASS_EXTERNAL_DEF     },
+  { "Label"          , COFF::IMAGE_SYM_CLASS_LABEL            },
+  { "UndefinedLabel" , COFF::IMAGE_SYM_CLASS_UNDEFINED_LABEL  },
+  { "MemberOfStruct" , COFF::IMAGE_SYM_CLASS_MEMBER_OF_STRUCT },
+  { "Argument"       , COFF::IMAGE_SYM_CLASS_ARGUMENT         },
+  { "StructTag"      , COFF::IMAGE_SYM_CLASS_STRUCT_TAG       },
+  { "MemberOfUnion"  , COFF::IMAGE_SYM_CLASS_MEMBER_OF_UNION  },
+  { "UnionTag"       , COFF::IMAGE_SYM_CLASS_UNION_TAG        },
+  { "TypeDefinition" , COFF::IMAGE_SYM_CLASS_TYPE_DEFINITION  },
+  { "UndefinedStatic", COFF::IMAGE_SYM_CLASS_UNDEFINED_STATIC },
+  { "EnumTag"        , COFF::IMAGE_SYM_CLASS_ENUM_TAG         },
+  { "MemberOfEnum"   , COFF::IMAGE_SYM_CLASS_MEMBER_OF_ENUM   },
+  { "RegisterParam"  , COFF::IMAGE_SYM_CLASS_REGISTER_PARAM   },
+  { "BitField"       , COFF::IMAGE_SYM_CLASS_BIT_FIELD        },
+  { "Block"          , COFF::IMAGE_SYM_CLASS_BLOCK            },
+  { "Function"       , COFF::IMAGE_SYM_CLASS_FUNCTION         },
+  { "EndOfStruct"    , COFF::IMAGE_SYM_CLASS_END_OF_STRUCT    },
+  { "File"           , COFF::IMAGE_SYM_CLASS_FILE             },
+  { "Section"        , COFF::IMAGE_SYM_CLASS_SECTION          },
+  { "WeakExternal"   , COFF::IMAGE_SYM_CLASS_WEAK_EXTERNAL    },
+  { "CLRToken"       , COFF::IMAGE_SYM_CLASS_CLR_TOKEN        }
+};
+
+static const EnumEntry<COFF::COMDATType> ImageCOMDATSelect[] = {
+  { "NoDuplicates", COFF::IMAGE_COMDAT_SELECT_NODUPLICATES },
+  { "Any"         , COFF::IMAGE_COMDAT_SELECT_ANY          },
+  { "SameSize"    , COFF::IMAGE_COMDAT_SELECT_SAME_SIZE    },
+  { "ExactMatch"  , COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH  },
+  { "Associative" , COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE  },
+  { "Largest"     , COFF::IMAGE_COMDAT_SELECT_LARGEST      },
+  { "Newest"      , COFF::IMAGE_COMDAT_SELECT_NEWEST       }
+};
+
+static const EnumEntry<COFF::DebugType> ImageDebugType[] = {
+    {"Unknown", COFF::IMAGE_DEBUG_TYPE_UNKNOWN},
+    {"COFF", COFF::IMAGE_DEBUG_TYPE_COFF},
+    {"CodeView", COFF::IMAGE_DEBUG_TYPE_CODEVIEW},
+    {"FPO", COFF::IMAGE_DEBUG_TYPE_FPO},
+    {"Misc", COFF::IMAGE_DEBUG_TYPE_MISC},
+    {"Exception", COFF::IMAGE_DEBUG_TYPE_EXCEPTION},
+    {"Fixup", COFF::IMAGE_DEBUG_TYPE_FIXUP},
+    {"OmapToSrc", COFF::IMAGE_DEBUG_TYPE_OMAP_TO_SRC},
+    {"OmapFromSrc", COFF::IMAGE_DEBUG_TYPE_OMAP_FROM_SRC},
+    {"Borland", COFF::IMAGE_DEBUG_TYPE_BORLAND},
+    {"Reserved10", COFF::IMAGE_DEBUG_TYPE_RESERVED10},
+    {"CLSID", COFF::IMAGE_DEBUG_TYPE_CLSID},
+    {"VCFeature", COFF::IMAGE_DEBUG_TYPE_VC_FEATURE},
+    {"POGO", COFF::IMAGE_DEBUG_TYPE_POGO},
+    {"ILTCG", COFF::IMAGE_DEBUG_TYPE_ILTCG},
+    {"MPX", COFF::IMAGE_DEBUG_TYPE_MPX},
+    {"Repro", COFF::IMAGE_DEBUG_TYPE_REPRO},
+    {"ExtendedDLLCharacteristics",
+     COFF::IMAGE_DEBUG_TYPE_EX_DLLCHARACTERISTICS},
+};
+
+static const EnumEntry<COFF::WeakExternalCharacteristics>
+WeakExternalCharacteristics[] = {
+  { "NoLibrary", COFF::IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY },
+  { "Library"  , COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY   },
+  { "Alias"    , COFF::IMAGE_WEAK_EXTERN_SEARCH_ALIAS     }
+};
+
+static const EnumEntry<uint32_t> SubSectionTypes[] = {
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, Symbols),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, Lines),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, StringTable),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, FileChecksums),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, FrameData),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, InlineeLines),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, CrossScopeImports),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, CrossScopeExports),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, ILLines),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, FuncMDTokenMap),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, TypeMDTokenMap),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, MergedAssemblyInput),
+    LLVM_READOBJ_ENUM_CLASS_ENT(DebugSubsectionKind, CoffSymbolRVA),
+};
+
+static const EnumEntry<uint32_t> FrameDataFlags[] = {
+    LLVM_READOBJ_ENUM_ENT(FrameData, HasSEH),
+    LLVM_READOBJ_ENUM_ENT(FrameData, HasEH),
+    LLVM_READOBJ_ENUM_ENT(FrameData, IsFunctionStart),
+};
+
+static const EnumEntry<uint8_t> FileChecksumKindNames[] = {
+  LLVM_READOBJ_ENUM_CLASS_ENT(FileChecksumKind, None),
+  LLVM_READOBJ_ENUM_CLASS_ENT(FileChecksumKind, MD5),
+  LLVM_READOBJ_ENUM_CLASS_ENT(FileChecksumKind, SHA1),
+  LLVM_READOBJ_ENUM_CLASS_ENT(FileChecksumKind, SHA256),
+};
+
+template <typename T>
+static std::error_code getSymbolAuxData(const COFFObjectFile *Obj,
+                                        COFFSymbolRef Symbol,
+                                        uint8_t AuxSymbolIdx, const T *&Aux) {
+  ArrayRef<uint8_t> AuxData = Obj->getSymbolAuxData(Symbol);
+  AuxData = AuxData.slice(AuxSymbolIdx * Obj->getSymbolTableEntrySize());
+  Aux = reinterpret_cast<const T*>(AuxData.data());
+  return std::error_code();
+}
+
+void COFFDumper::cacheRelocations() {
+  if (RelocCached)
+    return;
+  RelocCached = true;
+
+  for (const SectionRef &S : Obj->sections()) {
+    const coff_section *Section = Obj->getCOFFSection(S);
+
+    for (const RelocationRef &Reloc : S.relocations())
+      RelocMap[Section].push_back(Reloc);
+
+    // Sort relocations by address.
+    llvm::sort(RelocMap[Section], [](RelocationRef L, RelocationRef R) {
+      return L.getOffset() < R.getOffset();
+    });
+  }
+}
+
+void COFFDumper::printDataDirectory(uint32_t Index,
+                                    const std::string &FieldName) {
+  const data_directory *Data = Obj->getDataDirectory(Index);
+  if (!Data)
+    return;
+  W.printHex(FieldName + "RVA", Data->RelativeVirtualAddress);
+  W.printHex(FieldName + "Size", Data->Size);
+}
+
+void COFFDumper::printFileHeaders() {
+  time_t TDS = Obj->getTimeDateStamp();
+  char FormattedTime[20] = { };
+  strftime(FormattedTime, 20, "%Y-%m-%d %H:%M:%S", gmtime(&TDS));
+
+  {
+    DictScope D(W, "ImageFileHeader");
+    W.printEnum  ("Machine", Obj->getMachine(),
+                    makeArrayRef(ImageFileMachineType));
+    W.printNumber("SectionCount", Obj->getNumberOfSections());
+    W.printHex   ("TimeDateStamp", FormattedTime, Obj->getTimeDateStamp());
+    W.printHex   ("PointerToSymbolTable", Obj->getPointerToSymbolTable());
+    W.printNumber("SymbolCount", Obj->getNumberOfSymbols());
+    W.printNumber("StringTableSize", Obj->getStringTableSize());
+    W.printNumber("OptionalHeaderSize", Obj->getSizeOfOptionalHeader());
+    W.printFlags ("Characteristics", Obj->getCharacteristics(),
+                    makeArrayRef(ImageFileCharacteristics));
+  }
+
+  // Print PE header. This header does not exist if this is an object file and
+  // not an executable.
+  if (const pe32_header *PEHeader = Obj->getPE32Header())
+    printPEHeader<pe32_header>(PEHeader);
+
+  if (const pe32plus_header *PEPlusHeader = Obj->getPE32PlusHeader())
+    printPEHeader<pe32plus_header>(PEPlusHeader);
+
+  if (const dos_header *DH = Obj->getDOSHeader())
+    printDOSHeader(DH);
+}
+
+void COFFDumper::printDOSHeader(const dos_header *DH) {
+  DictScope D(W, "DOSHeader");
+  W.printString("Magic", StringRef(DH->Magic, sizeof(DH->Magic)));
+  W.printNumber("UsedBytesInTheLastPage", DH->UsedBytesInTheLastPage);
+  W.printNumber("FileSizeInPages", DH->FileSizeInPages);
+  W.printNumber("NumberOfRelocationItems", DH->NumberOfRelocationItems);
+  W.printNumber("HeaderSizeInParagraphs", DH->HeaderSizeInParagraphs);
+  W.printNumber("MinimumExtraParagraphs", DH->MinimumExtraParagraphs);
+  W.printNumber("MaximumExtraParagraphs", DH->MaximumExtraParagraphs);
+  W.printNumber("InitialRelativeSS", DH->InitialRelativeSS);
+  W.printNumber("InitialSP", DH->InitialSP);
+  W.printNumber("Checksum", DH->Checksum);
+  W.printNumber("InitialIP", DH->InitialIP);
+  W.printNumber("InitialRelativeCS", DH->InitialRelativeCS);
+  W.printNumber("AddressOfRelocationTable", DH->AddressOfRelocationTable);
+  W.printNumber("OverlayNumber", DH->OverlayNumber);
+  W.printNumber("OEMid", DH->OEMid);
+  W.printNumber("OEMinfo", DH->OEMinfo);
+  W.printNumber("AddressOfNewExeHeader", DH->AddressOfNewExeHeader);
+}
+
+template <class PEHeader>
+void COFFDumper::printPEHeader(const PEHeader *Hdr) {
+  DictScope D(W, "ImageOptionalHeader");
+  W.printHex   ("Magic", Hdr->Magic);
+  W.printNumber("MajorLinkerVersion", Hdr->MajorLinkerVersion);
+  W.printNumber("MinorLinkerVersion", Hdr->MinorLinkerVersion);
+  W.printNumber("SizeOfCode", Hdr->SizeOfCode);
+  W.printNumber("SizeOfInitializedData", Hdr->SizeOfInitializedData);
+  W.printNumber("SizeOfUninitializedData", Hdr->SizeOfUninitializedData);
+  W.printHex   ("AddressOfEntryPoint", Hdr->AddressOfEntryPoint);
+  W.printHex   ("BaseOfCode", Hdr->BaseOfCode);
+  printBaseOfDataField(Hdr);
+  W.printHex   ("ImageBase", Hdr->ImageBase);
+  W.printNumber("SectionAlignment", Hdr->SectionAlignment);
+  W.printNumber("FileAlignment", Hdr->FileAlignment);
+  W.printNumber("MajorOperatingSystemVersion",
+                Hdr->MajorOperatingSystemVersion);
+  W.printNumber("MinorOperatingSystemVersion",
+                Hdr->MinorOperatingSystemVersion);
+  W.printNumber("MajorImageVersion", Hdr->MajorImageVersion);
+  W.printNumber("MinorImageVersion", Hdr->MinorImageVersion);
+  W.printNumber("MajorSubsystemVersion", Hdr->MajorSubsystemVersion);
+  W.printNumber("MinorSubsystemVersion", Hdr->MinorSubsystemVersion);
+  W.printNumber("SizeOfImage", Hdr->SizeOfImage);
+  W.printNumber("SizeOfHeaders", Hdr->SizeOfHeaders);
+  W.printEnum  ("Subsystem", Hdr->Subsystem, makeArrayRef(PEWindowsSubsystem));
+  W.printFlags ("Characteristics", Hdr->DLLCharacteristics,
+                makeArrayRef(PEDLLCharacteristics));
+  W.printNumber("SizeOfStackReserve", Hdr->SizeOfStackReserve);
+  W.printNumber("SizeOfStackCommit", Hdr->SizeOfStackCommit);
+  W.printNumber("SizeOfHeapReserve", Hdr->SizeOfHeapReserve);
+  W.printNumber("SizeOfHeapCommit", Hdr->SizeOfHeapCommit);
+  W.printNumber("NumberOfRvaAndSize", Hdr->NumberOfRvaAndSize);
+
+  if (Hdr->NumberOfRvaAndSize > 0) {
+    DictScope D(W, "DataDirectory");
+    static const char * const directory[] = {
+      "ExportTable", "ImportTable", "ResourceTable", "ExceptionTable",
+      "CertificateTable", "BaseRelocationTable", "Debug", "Architecture",
+      "GlobalPtr", "TLSTable", "LoadConfigTable", "BoundImport", "IAT",
+      "DelayImportDescriptor", "CLRRuntimeHeader", "Reserved"
+    };
+
+    for (uint32_t i = 0; i < Hdr->NumberOfRvaAndSize; ++i)
+      printDataDirectory(i, directory[i]);
+  }
+}
+
+void COFFDumper::printCOFFDebugDirectory() {
+  ListScope LS(W, "DebugDirectory");
+  for (const debug_directory &D : Obj->debug_directories()) {
+    char FormattedTime[20] = {};
+    time_t TDS = D.TimeDateStamp;
+    strftime(FormattedTime, 20, "%Y-%m-%d %H:%M:%S", gmtime(&TDS));
+    DictScope S(W, "DebugEntry");
+    W.printHex("Characteristics", D.Characteristics);
+    W.printHex("TimeDateStamp", FormattedTime, D.TimeDateStamp);
+    W.printHex("MajorVersion", D.MajorVersion);
+    W.printHex("MinorVersion", D.MinorVersion);
+    W.printEnum("Type", D.Type, makeArrayRef(ImageDebugType));
+    W.printHex("SizeOfData", D.SizeOfData);
+    W.printHex("AddressOfRawData", D.AddressOfRawData);
+    W.printHex("PointerToRawData", D.PointerToRawData);
+    // Ideally, if D.AddressOfRawData == 0, we should try to load the payload
+    // using D.PointerToRawData instead.
+    if (D.AddressOfRawData == 0)
+      continue;
+    if (D.Type == COFF::IMAGE_DEBUG_TYPE_CODEVIEW) {
+      const codeview::DebugInfo *DebugInfo;
+      StringRef PDBFileName;
+      if (Error E = Obj->getDebugPDBInfo(&D, DebugInfo, PDBFileName))
+        reportError(std::move(E), Obj->getFileName());
+
+      DictScope PDBScope(W, "PDBInfo");
+      W.printHex("PDBSignature", DebugInfo->Signature.CVSignature);
+      if (DebugInfo->Signature.CVSignature == OMF::Signature::PDB70) {
+        W.printBinary("PDBGUID", makeArrayRef(DebugInfo->PDB70.Signature));
+        W.printNumber("PDBAge", DebugInfo->PDB70.Age);
+        W.printString("PDBFileName", PDBFileName);
+      }
+    } else if (D.SizeOfData != 0) {
+      // FIXME: Data visualization for IMAGE_DEBUG_TYPE_VC_FEATURE and
+      // IMAGE_DEBUG_TYPE_POGO?
+      ArrayRef<uint8_t> RawData;
+      if (Error E = Obj->getRvaAndSizeAsBytes(D.AddressOfRawData,
+                                                         D.SizeOfData, RawData))
+        reportError(std::move(E), Obj->getFileName());
+      if (D.Type == COFF::IMAGE_DEBUG_TYPE_EX_DLLCHARACTERISTICS) {
+        // FIXME right now the only possible value would fit in 8 bits,
+        // but that might change in the future
+        uint16_t Characteristics = RawData[0];
+        W.printFlags("ExtendedCharacteristics", Characteristics,
+                     makeArrayRef(PEExtendedDLLCharacteristics));
+      }
+      W.printBinaryBlock("RawData", RawData);
+    }
+  }
+}
+
+void COFFDumper::printRVATable(uint64_t TableVA, uint64_t Count,
+                               uint64_t EntrySize, PrintExtraCB PrintExtra) {
+  uintptr_t TableStart, TableEnd;
+  if (Error E = Obj->getVaPtr(TableVA, TableStart))
+    reportError(std::move(E), Obj->getFileName());
+  if (Error E =
+          Obj->getVaPtr(TableVA + Count * EntrySize - 1, TableEnd))
+    reportError(std::move(E), Obj->getFileName());
+  TableEnd++;
+  for (uintptr_t I = TableStart; I < TableEnd; I += EntrySize) {
+    uint32_t RVA = *reinterpret_cast<const ulittle32_t *>(I);
+    raw_ostream &OS = W.startLine();
+    OS << W.hex(Obj->getImageBase() + RVA);
+    if (PrintExtra)
+      PrintExtra(OS, reinterpret_cast<const uint8_t *>(I));
+    OS << '\n';
+  }
+}
+
+void COFFDumper::printCOFFLoadConfig() {
+  LoadConfigTables Tables;
+  if (Obj->is64())
+    printCOFFLoadConfig(Obj->getLoadConfig64(), Tables);
+  else
+    printCOFFLoadConfig(Obj->getLoadConfig32(), Tables);
+
+  if (Tables.SEHTableVA) {
+    ListScope LS(W, "SEHTable");
+    printRVATable(Tables.SEHTableVA, Tables.SEHTableCount, 4);
+  }
+
+  if (Tables.GuardFidTableVA) {
+    ListScope LS(W, "GuardFidTable");
+    if (Tables.GuardFlags & uint32_t(coff_guard_flags::FidTableHasFlags)) {
+      auto PrintGuardFlags = [](raw_ostream &OS, const uint8_t *Entry) {
+        uint8_t Flags = *reinterpret_cast<const uint8_t *>(Entry + 4);
+        if (Flags)
+          OS << " flags " << utohexstr(Flags);
+      };
+      printRVATable(Tables.GuardFidTableVA, Tables.GuardFidTableCount, 5,
+                    PrintGuardFlags);
+    } else {
+      printRVATable(Tables.GuardFidTableVA, Tables.GuardFidTableCount, 4);
+    }
+  }
+
+  if (Tables.GuardIatTableVA) {
+    ListScope LS(W, "GuardIatTable");
+    printRVATable(Tables.GuardIatTableVA, Tables.GuardIatTableCount, 4);
+  }
+
+  if (Tables.GuardLJmpTableVA) {
+    ListScope LS(W, "GuardLJmpTable");
+    printRVATable(Tables.GuardLJmpTableVA, Tables.GuardLJmpTableCount, 4);
+  }
+}
+
+template <typename T>
+void COFFDumper::printCOFFLoadConfig(const T *Conf, LoadConfigTables &Tables) {
+  if (!Conf)
+    return;
+
+  ListScope LS(W, "LoadConfig");
+  char FormattedTime[20] = {};
+  time_t TDS = Conf->TimeDateStamp;
+  strftime(FormattedTime, 20, "%Y-%m-%d %H:%M:%S", gmtime(&TDS));
+  W.printHex("Size", Conf->Size);
+
+  // Print everything before SecurityCookie. The vast majority of images today
+  // have all these fields.
+  if (Conf->Size < offsetof(T, SEHandlerTable))
+    return;
+  W.printHex("TimeDateStamp", FormattedTime, TDS);
+  W.printHex("MajorVersion", Conf->MajorVersion);
+  W.printHex("MinorVersion", Conf->MinorVersion);
+  W.printHex("GlobalFlagsClear", Conf->GlobalFlagsClear);
+  W.printHex("GlobalFlagsSet", Conf->GlobalFlagsSet);
+  W.printHex("CriticalSectionDefaultTimeout",
+             Conf->CriticalSectionDefaultTimeout);
+  W.printHex("DeCommitFreeBlockThreshold", Conf->DeCommitFreeBlockThreshold);
+  W.printHex("DeCommitTotalFreeThreshold", Conf->DeCommitTotalFreeThreshold);
+  W.printHex("LockPrefixTable", Conf->LockPrefixTable);
+  W.printHex("MaximumAllocationSize", Conf->MaximumAllocationSize);
+  W.printHex("VirtualMemoryThreshold", Conf->VirtualMemoryThreshold);
+  W.printHex("ProcessHeapFlags", Conf->ProcessHeapFlags);
+  W.printHex("ProcessAffinityMask", Conf->ProcessAffinityMask);
+  W.printHex("CSDVersion", Conf->CSDVersion);
+  W.printHex("DependentLoadFlags", Conf->DependentLoadFlags);
+  W.printHex("EditList", Conf->EditList);
+  W.printHex("SecurityCookie", Conf->SecurityCookie);
+
+  // Print the safe SEH table if present.
+  if (Conf->Size < offsetof(coff_load_configuration32, GuardCFCheckFunction))
+    return;
+  W.printHex("SEHandlerTable", Conf->SEHandlerTable);
+  W.printNumber("SEHandlerCount", Conf->SEHandlerCount);
+
+  Tables.SEHTableVA = Conf->SEHandlerTable;
+  Tables.SEHTableCount = Conf->SEHandlerCount;
+
+  // Print everything before CodeIntegrity. (2015)
+  if (Conf->Size < offsetof(T, CodeIntegrity))
+    return;
+  W.printHex("GuardCFCheckFunction", Conf->GuardCFCheckFunction);
+  W.printHex("GuardCFCheckDispatch", Conf->GuardCFCheckDispatch);
+  W.printHex("GuardCFFunctionTable", Conf->GuardCFFunctionTable);
+  W.printNumber("GuardCFFunctionCount", Conf->GuardCFFunctionCount);
+  W.printHex("GuardFlags", Conf->GuardFlags);
+
+  Tables.GuardFidTableVA = Conf->GuardCFFunctionTable;
+  Tables.GuardFidTableCount = Conf->GuardCFFunctionCount;
+  Tables.GuardFlags = Conf->GuardFlags;
+
+  // Print the rest. (2017)
+  if (Conf->Size < sizeof(T))
+    return;
+  W.printHex("GuardAddressTakenIatEntryTable",
+             Conf->GuardAddressTakenIatEntryTable);
+  W.printNumber("GuardAddressTakenIatEntryCount",
+                Conf->GuardAddressTakenIatEntryCount);
+  W.printHex("GuardLongJumpTargetTable", Conf->GuardLongJumpTargetTable);
+  W.printNumber("GuardLongJumpTargetCount", Conf->GuardLongJumpTargetCount);
+  W.printHex("DynamicValueRelocTable", Conf->DynamicValueRelocTable);
+  W.printHex("CHPEMetadataPointer", Conf->CHPEMetadataPointer);
+  W.printHex("GuardRFFailureRoutine", Conf->GuardRFFailureRoutine);
+  W.printHex("GuardRFFailureRoutineFunctionPointer",
+             Conf->GuardRFFailureRoutineFunctionPointer);
+  W.printHex("DynamicValueRelocTableOffset",
+             Conf->DynamicValueRelocTableOffset);
+  W.printNumber("DynamicValueRelocTableSection",
+                Conf->DynamicValueRelocTableSection);
+  W.printHex("GuardRFVerifyStackPointerFunctionPointer",
+             Conf->GuardRFVerifyStackPointerFunctionPointer);
+  W.printHex("HotPatchTableOffset", Conf->HotPatchTableOffset);
+
+  Tables.GuardIatTableVA = Conf->GuardAddressTakenIatEntryTable;
+  Tables.GuardIatTableCount = Conf->GuardAddressTakenIatEntryCount;
+
+  Tables.GuardLJmpTableVA = Conf->GuardLongJumpTargetTable;
+  Tables.GuardLJmpTableCount = Conf->GuardLongJumpTargetCount;
+}
+
+void COFFDumper::printBaseOfDataField(const pe32_header *Hdr) {
+  W.printHex("BaseOfData", Hdr->BaseOfData);
+}
+
+void COFFDumper::printBaseOfDataField(const pe32plus_header *) {}
+
+void COFFDumper::printCodeViewDebugInfo() {
+  // Print types first to build CVUDTNames, then print symbols.
+  for (const SectionRef &S : Obj->sections()) {
+    StringRef SectionName = unwrapOrError(Obj->getFileName(), S.getName());
+    // .debug$T is a standard CodeView type section, while .debug$P is the same
+    // format but used for MSVC precompiled header object files.
+    if (SectionName == ".debug$T" || SectionName == ".debug$P")
+      printCodeViewTypeSection(SectionName, S);
+  }
+  for (const SectionRef &S : Obj->sections()) {
+    StringRef SectionName = unwrapOrError(Obj->getFileName(), S.getName());
+    if (SectionName == ".debug$S")
+      printCodeViewSymbolSection(SectionName, S);
+  }
+}
+
+void COFFDumper::initializeFileAndStringTables(BinaryStreamReader &Reader) {
+  while (Reader.bytesRemaining() > 0 &&
+         (!CVFileChecksumTable.valid() || !CVStringTable.valid())) {
+    // The section consists of a number of subsection in the following format:
+    // |SubSectionType|SubSectionSize|Contents...|
+    uint32_t SubType, SubSectionSize;
+
+    if (Error E = Reader.readInteger(SubType))
+      reportError(std::move(E), Obj->getFileName());
+    if (Error E = Reader.readInteger(SubSectionSize))
+      reportError(std::move(E), Obj->getFileName());
+
+    StringRef Contents;
+    if (Error E = Reader.readFixedString(Contents, SubSectionSize))
+      reportError(std::move(E), Obj->getFileName());
+
+    BinaryStreamRef ST(Contents, support::little);
+    switch (DebugSubsectionKind(SubType)) {
+    case DebugSubsectionKind::FileChecksums:
+      if (Error E = CVFileChecksumTable.initialize(ST))
+        reportError(std::move(E), Obj->getFileName());
+      break;
+    case DebugSubsectionKind::StringTable:
+      if (Error E = CVStringTable.initialize(ST))
+        reportError(std::move(E), Obj->getFileName());
+      break;
+    default:
+      break;
+    }
+
+    uint32_t PaddedSize = alignTo(SubSectionSize, 4);
+    if (Error E = Reader.skip(PaddedSize - SubSectionSize))
+      reportError(std::move(E), Obj->getFileName());
+  }
+}
+
+void COFFDumper::printCodeViewSymbolSection(StringRef SectionName,
+                                            const SectionRef &Section) {
+  StringRef SectionContents =
+      unwrapOrError(Obj->getFileName(), Section.getContents());
+  StringRef Data = SectionContents;
+
+  SmallVector<StringRef, 10> FunctionNames;
+  StringMap<StringRef> FunctionLineTables;
+
+  ListScope D(W, "CodeViewDebugInfo");
+  // Print the section to allow correlation with printSectionHeaders.
+  W.printNumber("Section", SectionName, Obj->getSectionID(Section));
+
+  uint32_t Magic;
+  if (Error E = consume(Data, Magic))
+    reportError(std::move(E), Obj->getFileName());
+
+  W.printHex("Magic", Magic);
+  if (Magic != COFF::DEBUG_SECTION_MAGIC)
+    reportError(errorCodeToError(object_error::parse_failed),
+                Obj->getFileName());
+
+  BinaryStreamReader FSReader(Data, support::little);
+  initializeFileAndStringTables(FSReader);
+
+  // TODO: Convert this over to using ModuleSubstreamVisitor.
+  while (!Data.empty()) {
+    // The section consists of a number of subsection in the following format:
+    // |SubSectionType|SubSectionSize|Contents...|
+    uint32_t SubType, SubSectionSize;
+    if (Error E = consume(Data, SubType))
+      reportError(std::move(E), Obj->getFileName());
+    if (Error E = consume(Data, SubSectionSize))
+      reportError(std::move(E), Obj->getFileName());
+
+    ListScope S(W, "Subsection");
+    // Dump the subsection as normal even if the ignore bit is set.
+    if (SubType & SubsectionIgnoreFlag) {
+      W.printHex("IgnoredSubsectionKind", SubType);
+      SubType &= ~SubsectionIgnoreFlag;
+    }
+    W.printEnum("SubSectionType", SubType, makeArrayRef(SubSectionTypes));
+    W.printHex("SubSectionSize", SubSectionSize);
+
+    // Get the contents of the subsection.
+    if (SubSectionSize > Data.size())
+      return reportError(errorCodeToError(object_error::parse_failed),
+                         Obj->getFileName());
+    StringRef Contents = Data.substr(0, SubSectionSize);
+
+    // Add SubSectionSize to the current offset and align that offset to find
+    // the next subsection.
+    size_t SectionOffset = Data.data() - SectionContents.data();
+    size_t NextOffset = SectionOffset + SubSectionSize;
+    NextOffset = alignTo(NextOffset, 4);
+    if (NextOffset > SectionContents.size())
+      return reportError(errorCodeToError(object_error::parse_failed),
+                         Obj->getFileName());
+    Data = SectionContents.drop_front(NextOffset);
+
+    // Optionally print the subsection bytes in case our parsing gets confused
+    // later.
+    if (opts::CodeViewSubsectionBytes)
+      printBinaryBlockWithRelocs("SubSectionContents", Section, SectionContents,
+                                 Contents);
+
+    switch (DebugSubsectionKind(SubType)) {
+    case DebugSubsectionKind::Symbols:
+      printCodeViewSymbolsSubsection(Contents, Section, SectionContents);
+      break;
+
+    case DebugSubsectionKind::InlineeLines:
+      printCodeViewInlineeLines(Contents);
+      break;
+
+    case DebugSubsectionKind::FileChecksums:
+      printCodeViewFileChecksums(Contents);
+      break;
+
+    case DebugSubsectionKind::Lines: {
+      // Holds a PC to file:line table.  Some data to parse this subsection is
+      // stored in the other subsections, so just check sanity and store the
+      // pointers for deferred processing.
+
+      if (SubSectionSize < 12) {
+        // There should be at least three words to store two function
+        // relocations and size of the code.
+        reportError(errorCodeToError(object_error::parse_failed),
+                    Obj->getFileName());
+        return;
+      }
+
+      StringRef LinkageName;
+      if (std::error_code EC = resolveSymbolName(Obj->getCOFFSection(Section),
+                                                 SectionOffset, LinkageName))
+        reportError(errorCodeToError(EC), Obj->getFileName());
+
+      W.printString("LinkageName", LinkageName);
+      if (FunctionLineTables.count(LinkageName) != 0) {
+        // Saw debug info for this function already?
+        reportError(errorCodeToError(object_error::parse_failed),
+                    Obj->getFileName());
+        return;
+      }
+
+      FunctionLineTables[LinkageName] = Contents;
+      FunctionNames.push_back(LinkageName);
+      break;
+    }
+    case DebugSubsectionKind::FrameData: {
+      // First four bytes is a relocation against the function.
+      BinaryStreamReader SR(Contents, llvm::support::little);
+
+      DebugFrameDataSubsectionRef FrameData;
+      if (Error E = FrameData.initialize(SR))
+        reportError(std::move(E), Obj->getFileName());
+
+      StringRef LinkageName;
+      if (std::error_code EC =
+              resolveSymbolName(Obj->getCOFFSection(Section), SectionContents,
+                                FrameData.getRelocPtr(), LinkageName))
+        reportError(errorCodeToError(EC), Obj->getFileName());
+      W.printString("LinkageName", LinkageName);
+
+      // To find the active frame description, search this array for the
+      // smallest PC range that includes the current PC.
+      for (const auto &FD : FrameData) {
+        StringRef FrameFunc = unwrapOrError(
+            Obj->getFileName(), CVStringTable.getString(FD.FrameFunc));
+
+        DictScope S(W, "FrameData");
+        W.printHex("RvaStart", FD.RvaStart);
+        W.printHex("CodeSize", FD.CodeSize);
+        W.printHex("LocalSize", FD.LocalSize);
+        W.printHex("ParamsSize", FD.ParamsSize);
+        W.printHex("MaxStackSize", FD.MaxStackSize);
+        W.printHex("PrologSize", FD.PrologSize);
+        W.printHex("SavedRegsSize", FD.SavedRegsSize);
+        W.printFlags("Flags", FD.Flags, makeArrayRef(FrameDataFlags));
+
+        // The FrameFunc string is a small RPN program. It can be broken up into
+        // statements that end in the '=' operator, which assigns the value on
+        // the top of the stack to the previously pushed variable. Variables can
+        // be temporary values ($T0) or physical registers ($esp). Print each
+        // assignment on its own line to make these programs easier to read.
+        {
+          ListScope FFS(W, "FrameFunc");
+          while (!FrameFunc.empty()) {
+            size_t EqOrEnd = FrameFunc.find('=');
+            if (EqOrEnd == StringRef::npos)
+              EqOrEnd = FrameFunc.size();
+            else
+              ++EqOrEnd;
+            StringRef Stmt = FrameFunc.substr(0, EqOrEnd);
+            W.printString(Stmt);
+            FrameFunc = FrameFunc.drop_front(EqOrEnd).trim();
+          }
+        }
+      }
+      break;
+    }
+
+    // Do nothing for unrecognized subsections.
+    default:
+      break;
+    }
+    W.flush();
+  }
+
+  // Dump the line tables now that we've read all the subsections and know all
+  // the required information.
+  for (unsigned I = 0, E = FunctionNames.size(); I != E; ++I) {
+    StringRef Name = FunctionNames[I];
+    ListScope S(W, "FunctionLineTable");
+    W.printString("LinkageName", Name);
+
+    BinaryStreamReader Reader(FunctionLineTables[Name], support::little);
+
+    DebugLinesSubsectionRef LineInfo;
+    if (Error E = LineInfo.initialize(Reader))
+      reportError(std::move(E), Obj->getFileName());
+
+    W.printHex("Flags", LineInfo.header()->Flags);
+    W.printHex("CodeSize", LineInfo.header()->CodeSize);
+    for (const auto &Entry : LineInfo) {
+
+      ListScope S(W, "FilenameSegment");
+      printFileNameForOffset("Filename", Entry.NameIndex);
+      uint32_t ColumnIndex = 0;
+      for (const auto &Line : Entry.LineNumbers) {
+        if (Line.Offset >= LineInfo.header()->CodeSize) {
+          reportError(errorCodeToError(object_error::parse_failed),
+                      Obj->getFileName());
+          return;
+        }
+
+        std::string PC = std::string(formatv("+{0:X}", uint32_t(Line.Offset)));
+        ListScope PCScope(W, PC);
+        codeview::LineInfo LI(Line.Flags);
+
+        if (LI.isAlwaysStepInto())
+          W.printString("StepInto", StringRef("Always"));
+        else if (LI.isNeverStepInto())
+          W.printString("StepInto", StringRef("Never"));
+        else
+          W.printNumber("LineNumberStart", LI.getStartLine());
+        W.printNumber("LineNumberEndDelta", LI.getLineDelta());
+        W.printBoolean("IsStatement", LI.isStatement());
+        if (LineInfo.hasColumnInfo()) {
+          W.printNumber("ColStart", Entry.Columns[ColumnIndex].StartColumn);
+          W.printNumber("ColEnd", Entry.Columns[ColumnIndex].EndColumn);
+          ++ColumnIndex;
+        }
+      }
+    }
+  }
+}
+
+void COFFDumper::printCodeViewSymbolsSubsection(StringRef Subsection,
+                                                const SectionRef &Section,
+                                                StringRef SectionContents) {
+  ArrayRef<uint8_t> BinaryData(Subsection.bytes_begin(),
+                               Subsection.bytes_end());
+  auto CODD = std::make_unique<COFFObjectDumpDelegate>(*this, Section, Obj,
+                                                        SectionContents);
+  CVSymbolDumper CVSD(W, Types, CodeViewContainer::ObjectFile, std::move(CODD),
+                      CompilationCPUType, opts::CodeViewSubsectionBytes);
+  CVSymbolArray Symbols;
+  BinaryStreamReader Reader(BinaryData, llvm::support::little);
+  if (Error E = Reader.readArray(Symbols, Reader.getLength())) {
+    W.flush();
+    reportError(std::move(E), Obj->getFileName());
+  }
+
+  if (Error E = CVSD.dump(Symbols)) {
+    W.flush();
+    reportError(std::move(E), Obj->getFileName());
+  }
+  CompilationCPUType = CVSD.getCompilationCPUType();
+  W.flush();
+}
+
+void COFFDumper::printCodeViewFileChecksums(StringRef Subsection) {
+  BinaryStreamRef Stream(Subsection, llvm::support::little);
+  DebugChecksumsSubsectionRef Checksums;
+  if (Error E = Checksums.initialize(Stream))
+    reportError(std::move(E), Obj->getFileName());
+
+  for (auto &FC : Checksums) {
+    DictScope S(W, "FileChecksum");
+
+    StringRef Filename = unwrapOrError(
+        Obj->getFileName(), CVStringTable.getString(FC.FileNameOffset));
+    W.printHex("Filename", Filename, FC.FileNameOffset);
+    W.printHex("ChecksumSize", FC.Checksum.size());
+    W.printEnum("ChecksumKind", uint8_t(FC.Kind),
+                makeArrayRef(FileChecksumKindNames));
+
+    W.printBinary("ChecksumBytes", FC.Checksum);
+  }
+}
+
+void COFFDumper::printCodeViewInlineeLines(StringRef Subsection) {
+  BinaryStreamReader SR(Subsection, llvm::support::little);
+  DebugInlineeLinesSubsectionRef Lines;
+  if (Error E = Lines.initialize(SR))
+    reportError(std::move(E), Obj->getFileName());
+
+  for (auto &Line : Lines) {
+    DictScope S(W, "InlineeSourceLine");
+    printTypeIndex("Inlinee", Line.Header->Inlinee);
+    printFileNameForOffset("FileID", Line.Header->FileID);
+    W.printNumber("SourceLineNum", Line.Header->SourceLineNum);
+
+    if (Lines.hasExtraFiles()) {
+      W.printNumber("ExtraFileCount", Line.ExtraFiles.size());
+      ListScope ExtraFiles(W, "ExtraFiles");
+      for (const auto &FID : Line.ExtraFiles) {
+        printFileNameForOffset("FileID", FID);
+      }
+    }
+  }
+}
+
+StringRef COFFDumper::getFileNameForFileOffset(uint32_t FileOffset) {
+  // The file checksum subsection should precede all references to it.
+  if (!CVFileChecksumTable.valid() || !CVStringTable.valid())
+    reportError(errorCodeToError(object_error::parse_failed),
+                Obj->getFileName());
+
+  auto Iter = CVFileChecksumTable.getArray().at(FileOffset);
+
+  // Check if the file checksum table offset is valid.
+  if (Iter == CVFileChecksumTable.end())
+    reportError(errorCodeToError(object_error::parse_failed),
+                Obj->getFileName());
+
+  return unwrapOrError(Obj->getFileName(),
+                       CVStringTable.getString(Iter->FileNameOffset));
+}
+
+void COFFDumper::printFileNameForOffset(StringRef Label, uint32_t FileOffset) {
+  W.printHex(Label, getFileNameForFileOffset(FileOffset), FileOffset);
+}
+
+void COFFDumper::mergeCodeViewTypes(MergingTypeTableBuilder &CVIDs,
+                                    MergingTypeTableBuilder &CVTypes,
+                                    GlobalTypeTableBuilder &GlobalCVIDs,
+                                    GlobalTypeTableBuilder &GlobalCVTypes,
+                                    bool GHash) {
+  for (const SectionRef &S : Obj->sections()) {
+    StringRef SectionName = unwrapOrError(Obj->getFileName(), S.getName());
+    if (SectionName == ".debug$T") {
+      StringRef Data = unwrapOrError(Obj->getFileName(), S.getContents());
+      uint32_t Magic;
+      if (Error E = consume(Data, Magic))
+        reportError(std::move(E), Obj->getFileName());
+
+      if (Magic != 4)
+        reportError(errorCodeToError(object_error::parse_failed),
+                    Obj->getFileName());
+
+      CVTypeArray Types;
+      BinaryStreamReader Reader(Data, llvm::support::little);
+      if (auto EC = Reader.readArray(Types, Reader.getLength())) {
+        consumeError(std::move(EC));
+        W.flush();
+        reportError(errorCodeToError(object_error::parse_failed),
+                    Obj->getFileName());
+      }
+      SmallVector<TypeIndex, 128> SourceToDest;
+      Optional<uint32_t> PCHSignature;
+      if (GHash) {
+        std::vector<GloballyHashedType> Hashes =
+            GloballyHashedType::hashTypes(Types);
+        if (Error E =
+                mergeTypeAndIdRecords(GlobalCVIDs, GlobalCVTypes, SourceToDest,
+                                      Types, Hashes, PCHSignature))
+          return reportError(std::move(E), Obj->getFileName());
+      } else {
+        if (Error E = mergeTypeAndIdRecords(CVIDs, CVTypes, SourceToDest, Types,
+                                            PCHSignature))
+          return reportError(std::move(E), Obj->getFileName());
+      }
+    }
+  }
+}
+
+void COFFDumper::printCodeViewTypeSection(StringRef SectionName,
+                                          const SectionRef &Section) {
+  ListScope D(W, "CodeViewTypes");
+  W.printNumber("Section", SectionName, Obj->getSectionID(Section));
+
+  StringRef Data = unwrapOrError(Obj->getFileName(), Section.getContents());
+  if (opts::CodeViewSubsectionBytes)
+    W.printBinaryBlock("Data", Data);
+
+  uint32_t Magic;
+  if (Error E = consume(Data, Magic))
+    reportError(std::move(E), Obj->getFileName());
+
+  W.printHex("Magic", Magic);
+  if (Magic != COFF::DEBUG_SECTION_MAGIC)
+    reportError(errorCodeToError(object_error::parse_failed),
+                Obj->getFileName());
+
+  Types.reset(Data, 100);
+
+  TypeDumpVisitor TDV(Types, &W, opts::CodeViewSubsectionBytes);
+  if (Error E = codeview::visitTypeStream(Types, TDV))
+    reportError(std::move(E), Obj->getFileName());
+
+  W.flush();
+}
+
+void COFFDumper::printSectionHeaders() {
+  ListScope SectionsD(W, "Sections");
+  int SectionNumber = 0;
+  for (const SectionRef &Sec : Obj->sections()) {
+    ++SectionNumber;
+    const coff_section *Section = Obj->getCOFFSection(Sec);
+
+    StringRef Name = unwrapOrError(Obj->getFileName(), Sec.getName());
+
+    DictScope D(W, "Section");
+    W.printNumber("Number", SectionNumber);
+    W.printBinary("Name", Name, Section->Name);
+    W.printHex   ("VirtualSize", Section->VirtualSize);
+    W.printHex   ("VirtualAddress", Section->VirtualAddress);
+    W.printNumber("RawDataSize", Section->SizeOfRawData);
+    W.printHex   ("PointerToRawData", Section->PointerToRawData);
+    W.printHex   ("PointerToRelocations", Section->PointerToRelocations);
+    W.printHex   ("PointerToLineNumbers", Section->PointerToLinenumbers);
+    W.printNumber("RelocationCount", Section->NumberOfRelocations);
+    W.printNumber("LineNumberCount", Section->NumberOfLinenumbers);
+    W.printFlags ("Characteristics", Section->Characteristics,
+                    makeArrayRef(ImageSectionCharacteristics),
+                    COFF::SectionCharacteristics(0x00F00000));
+
+    if (opts::SectionRelocations) {
+      ListScope D(W, "Relocations");
+      for (const RelocationRef &Reloc : Sec.relocations())
+        printRelocation(Sec, Reloc);
+    }
+
+    if (opts::SectionSymbols) {
+      ListScope D(W, "Symbols");
+      for (const SymbolRef &Symbol : Obj->symbols()) {
+        if (!Sec.containsSymbol(Symbol))
+          continue;
+
+        printSymbol(Symbol);
+      }
+    }
+
+    if (opts::SectionData &&
+        !(Section->Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)) {
+      StringRef Data = unwrapOrError(Obj->getFileName(), Sec.getContents());
+      W.printBinaryBlock("SectionData", Data);
+    }
+  }
+}
+
+void COFFDumper::printRelocations() {
+  ListScope D(W, "Relocations");
+
+  int SectionNumber = 0;
+  for (const SectionRef &Section : Obj->sections()) {
+    ++SectionNumber;
+    StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName());
+
+    bool PrintedGroup = false;
+    for (const RelocationRef &Reloc : Section.relocations()) {
+      if (!PrintedGroup) {
+        W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
+        W.indent();
+        PrintedGroup = true;
+      }
+
+      printRelocation(Section, Reloc);
+    }
+
+    if (PrintedGroup) {
+      W.unindent();
+      W.startLine() << "}\n";
+    }
+  }
+}
+
+void COFFDumper::printRelocation(const SectionRef &Section,
+                                 const RelocationRef &Reloc, uint64_t Bias) {
+  uint64_t Offset = Reloc.getOffset() - Bias;
+  uint64_t RelocType = Reloc.getType();
+  SmallString<32> RelocName;
+  StringRef SymbolName;
+  Reloc.getTypeName(RelocName);
+  symbol_iterator Symbol = Reloc.getSymbol();
+  int64_t SymbolIndex = -1;
+  if (Symbol != Obj->symbol_end()) {
+    Expected<StringRef> SymbolNameOrErr = Symbol->getName();
+    if (!SymbolNameOrErr)
+      reportError(SymbolNameOrErr.takeError(), Obj->getFileName());
+
+    SymbolName = *SymbolNameOrErr;
+    SymbolIndex = Obj->getSymbolIndex(Obj->getCOFFSymbol(*Symbol));
+  }
+
+  if (opts::ExpandRelocs) {
+    DictScope Group(W, "Relocation");
+    W.printHex("Offset", Offset);
+    W.printNumber("Type", RelocName, RelocType);
+    W.printString("Symbol", SymbolName.empty() ? "-" : SymbolName);
+    W.printNumber("SymbolIndex", SymbolIndex);
+  } else {
+    raw_ostream& OS = W.startLine();
+    OS << W.hex(Offset)
+       << " " << RelocName
+       << " " << (SymbolName.empty() ? "-" : SymbolName)
+       << " (" << SymbolIndex << ")"
+       << "\n";
+  }
+}
+
+void COFFDumper::printSymbols() {
+  ListScope Group(W, "Symbols");
+
+  for (const SymbolRef &Symbol : Obj->symbols())
+    printSymbol(Symbol);
+}
+
+void COFFDumper::printDynamicSymbols() { ListScope Group(W, "DynamicSymbols"); }
+
+static Expected<StringRef>
+getSectionName(const llvm::object::COFFObjectFile *Obj, int32_t SectionNumber,
+               const coff_section *Section) {
+  if (Section)
+    return Obj->getSectionName(Section);
+  if (SectionNumber == llvm::COFF::IMAGE_SYM_DEBUG)
+    return StringRef("IMAGE_SYM_DEBUG");
+  if (SectionNumber == llvm::COFF::IMAGE_SYM_ABSOLUTE)
+    return StringRef("IMAGE_SYM_ABSOLUTE");
+  if (SectionNumber == llvm::COFF::IMAGE_SYM_UNDEFINED)
+    return StringRef("IMAGE_SYM_UNDEFINED");
+  return StringRef("");
+}
+
+void COFFDumper::printSymbol(const SymbolRef &Sym) {
+  DictScope D(W, "Symbol");
+
+  COFFSymbolRef Symbol = Obj->getCOFFSymbol(Sym);
+  Expected<const coff_section *> SecOrErr =
+      Obj->getSection(Symbol.getSectionNumber());
+  if (!SecOrErr) {
+    W.startLine() << "Invalid section number: " << Symbol.getSectionNumber()
+                  << "\n";
+    W.flush();
+    consumeError(SecOrErr.takeError());
+    return;
+  }
+  const coff_section *Section = *SecOrErr;
+
+  StringRef SymbolName;
+  if (Expected<StringRef> SymNameOrErr = Obj->getSymbolName(Symbol))
+    SymbolName = *SymNameOrErr;
+
+  StringRef SectionName;
+  if (Expected<StringRef> SecNameOrErr =
+          getSectionName(Obj, Symbol.getSectionNumber(), Section))
+    SectionName = *SecNameOrErr;
+
+  W.printString("Name", SymbolName);
+  W.printNumber("Value", Symbol.getValue());
+  W.printNumber("Section", SectionName, Symbol.getSectionNumber());
+  W.printEnum  ("BaseType", Symbol.getBaseType(), makeArrayRef(ImageSymType));
+  W.printEnum  ("ComplexType", Symbol.getComplexType(),
+                                                   makeArrayRef(ImageSymDType));
+  W.printEnum  ("StorageClass", Symbol.getStorageClass(),
+                                                   makeArrayRef(ImageSymClass));
+  W.printNumber("AuxSymbolCount", Symbol.getNumberOfAuxSymbols());
+
+  for (uint8_t I = 0; I < Symbol.getNumberOfAuxSymbols(); ++I) {
+    if (Symbol.isFunctionDefinition()) {
+      const coff_aux_function_definition *Aux;
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, Aux))
+        reportError(errorCodeToError(EC), Obj->getFileName());
+
+      DictScope AS(W, "AuxFunctionDef");
+      W.printNumber("TagIndex", Aux->TagIndex);
+      W.printNumber("TotalSize", Aux->TotalSize);
+      W.printHex("PointerToLineNumber", Aux->PointerToLinenumber);
+      W.printHex("PointerToNextFunction", Aux->PointerToNextFunction);
+
+    } else if (Symbol.isAnyUndefined()) {
+      const coff_aux_weak_external *Aux;
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, Aux))
+        reportError(errorCodeToError(EC), Obj->getFileName());
+
+      DictScope AS(W, "AuxWeakExternal");
+      W.printNumber("Linked", getSymbolName(Aux->TagIndex), Aux->TagIndex);
+      W.printEnum  ("Search", Aux->Characteristics,
+                    makeArrayRef(WeakExternalCharacteristics));
+
+    } else if (Symbol.isFileRecord()) {
+      const char *FileName;
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, FileName))
+        reportError(errorCodeToError(EC), Obj->getFileName());
+      DictScope AS(W, "AuxFileRecord");
+
+      StringRef Name(FileName, Symbol.getNumberOfAuxSymbols() *
+                                   Obj->getSymbolTableEntrySize());
+      W.printString("FileName", Name.rtrim(StringRef("\0", 1)));
+      break;
+    } else if (Symbol.isSectionDefinition()) {
+      const coff_aux_section_definition *Aux;
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, Aux))
+        reportError(errorCodeToError(EC), Obj->getFileName());
+
+      int32_t AuxNumber = Aux->getNumber(Symbol.isBigObj());
+
+      DictScope AS(W, "AuxSectionDef");
+      W.printNumber("Length", Aux->Length);
+      W.printNumber("RelocationCount", Aux->NumberOfRelocations);
+      W.printNumber("LineNumberCount", Aux->NumberOfLinenumbers);
+      W.printHex("Checksum", Aux->CheckSum);
+      W.printNumber("Number", AuxNumber);
+      W.printEnum("Selection", Aux->Selection, makeArrayRef(ImageCOMDATSelect));
+
+      if (Section && Section->Characteristics & COFF::IMAGE_SCN_LNK_COMDAT
+          && Aux->Selection == COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE) {
+        Expected<const coff_section *> Assoc = Obj->getSection(AuxNumber);
+        if (!Assoc)
+          reportError(Assoc.takeError(), Obj->getFileName());
+        Expected<StringRef> AssocName = getSectionName(Obj, AuxNumber, *Assoc);
+        if (!AssocName)
+          reportError(AssocName.takeError(), Obj->getFileName());
+
+        W.printNumber("AssocSection", *AssocName, AuxNumber);
+      }
+    } else if (Symbol.isCLRToken()) {
+      const coff_aux_clr_token *Aux;
+      if (std::error_code EC = getSymbolAuxData(Obj, Symbol, I, Aux))
+        reportError(errorCodeToError(EC), Obj->getFileName());
+
+      DictScope AS(W, "AuxCLRToken");
+      W.printNumber("AuxType", Aux->AuxType);
+      W.printNumber("Reserved", Aux->Reserved);
+      W.printNumber("SymbolTableIndex", getSymbolName(Aux->SymbolTableIndex),
+                    Aux->SymbolTableIndex);
+
+    } else {
+      W.startLine() << "<unhandled auxiliary record>\n";
+    }
+  }
+}
+
+void COFFDumper::printUnwindInfo() {
+  ListScope D(W, "UnwindInformation");
+  switch (Obj->getMachine()) {
+  case COFF::IMAGE_FILE_MACHINE_AMD64: {
+    Win64EH::Dumper Dumper(W);
+    Win64EH::Dumper::SymbolResolver
+    Resolver = [](const object::coff_section *Section, uint64_t Offset,
+                  SymbolRef &Symbol, void *user_data) -> std::error_code {
+      COFFDumper *Dumper = reinterpret_cast<COFFDumper *>(user_data);
+      return Dumper->resolveSymbol(Section, Offset, Symbol);
+    };
+    Win64EH::Dumper::Context Ctx(*Obj, Resolver, this);
+    Dumper.printData(Ctx);
+    break;
+  }
+  case COFF::IMAGE_FILE_MACHINE_ARM64:
+  case COFF::IMAGE_FILE_MACHINE_ARMNT: {
+    ARM::WinEH::Decoder Decoder(W, Obj->getMachine() ==
+                                       COFF::IMAGE_FILE_MACHINE_ARM64);
+    // TODO Propagate the error.
+    consumeError(Decoder.dumpProcedureData(*Obj));
+    break;
+  }
+  default:
+    W.printEnum("unsupported Image Machine", Obj->getMachine(),
+                makeArrayRef(ImageFileMachineType));
+    break;
+  }
+}
+
+void COFFDumper::printNeededLibraries() {
+  ListScope D(W, "NeededLibraries");
+
+  using LibsTy = std::vector<StringRef>;
+  LibsTy Libs;
+
+  for (const ImportDirectoryEntryRef &DirRef : Obj->import_directories()) {
+    StringRef Name;
+    if (!DirRef.getName(Name))
+      Libs.push_back(Name);
+  }
+
+  llvm::stable_sort(Libs);
+
+  for (const auto &L : Libs) {
+    W.startLine() << L << "\n";
+  }
+}
+
+void COFFDumper::printImportedSymbols(
+    iterator_range<imported_symbol_iterator> Range) {
+  for (const ImportedSymbolRef &I : Range) {
+    StringRef Sym;
+    if (Error E = I.getSymbolName(Sym))
+      reportError(std::move(E), Obj->getFileName());
+    uint16_t Ordinal;
+    if (Error E = I.getOrdinal(Ordinal))
+      reportError(std::move(E), Obj->getFileName());
+    W.printNumber("Symbol", Sym, Ordinal);
+  }
+}
+
+void COFFDumper::printDelayImportedSymbols(
+    const DelayImportDirectoryEntryRef &I,
+    iterator_range<imported_symbol_iterator> Range) {
+  int Index = 0;
+  for (const ImportedSymbolRef &S : Range) {
+    DictScope Import(W, "Import");
+    StringRef Sym;
+    if (Error E = S.getSymbolName(Sym))
+      reportError(std::move(E), Obj->getFileName());
+
+    uint16_t Ordinal;
+    if (Error E = S.getOrdinal(Ordinal))
+      reportError(std::move(E), Obj->getFileName());
+    W.printNumber("Symbol", Sym, Ordinal);
+
+    uint64_t Addr;
+    if (Error E = I.getImportAddress(Index++, Addr))
+      reportError(std::move(E), Obj->getFileName());
+    W.printHex("Address", Addr);
+  }
+}
+
+void COFFDumper::printCOFFImports() {
+  // Regular imports
+  for (const ImportDirectoryEntryRef &I : Obj->import_directories()) {
+    DictScope Import(W, "Import");
+    StringRef Name;
+    if (Error E = I.getName(Name))
+      reportError(std::move(E), Obj->getFileName());
+    W.printString("Name", Name);
+    uint32_t ILTAddr;
+    if (Error E = I.getImportLookupTableRVA(ILTAddr))
+      reportError(std::move(E), Obj->getFileName());
+    W.printHex("ImportLookupTableRVA", ILTAddr);
+    uint32_t IATAddr;
+    if (Error E = I.getImportAddressTableRVA(IATAddr))
+      reportError(std::move(E), Obj->getFileName());
+    W.printHex("ImportAddressTableRVA", IATAddr);
+    // The import lookup table can be missing with certain older linkers, so
+    // fall back to the import address table in that case.
+    if (ILTAddr)
+      printImportedSymbols(I.lookup_table_symbols());
+    else
+      printImportedSymbols(I.imported_symbols());
+  }
+
+  // Delay imports
+  for (const DelayImportDirectoryEntryRef &I : Obj->delay_import_directories()) {
+    DictScope Import(W, "DelayImport");
+    StringRef Name;
+    if (Error E = I.getName(Name))
+      reportError(std::move(E), Obj->getFileName());
+    W.printString("Name", Name);
+    const delay_import_directory_table_entry *Table;
+    if (Error E = I.getDelayImportTable(Table))
+      reportError(std::move(E), Obj->getFileName());
+    W.printHex("Attributes", Table->Attributes);
+    W.printHex("ModuleHandle", Table->ModuleHandle);
+    W.printHex("ImportAddressTable", Table->DelayImportAddressTable);
+    W.printHex("ImportNameTable", Table->DelayImportNameTable);
+    W.printHex("BoundDelayImportTable", Table->BoundDelayImportTable);
+    W.printHex("UnloadDelayImportTable", Table->UnloadDelayImportTable);
+    printDelayImportedSymbols(I, I.imported_symbols());
+  }
+}
+
+void COFFDumper::printCOFFExports() {
+  for (const ExportDirectoryEntryRef &Exp : Obj->export_directories()) {
+    DictScope Export(W, "Export");
+
+    StringRef Name;
+    uint32_t Ordinal, RVA;
+
+    if (Error E = Exp.getSymbolName(Name))
+      reportError(std::move(E), Obj->getFileName());
+    if (Error E = Exp.getOrdinal(Ordinal))
+      reportError(std::move(E), Obj->getFileName());
+    if (Error E = Exp.getExportRVA(RVA))
+      reportError(std::move(E), Obj->getFileName());
+
+    W.printNumber("Ordinal", Ordinal);
+    W.printString("Name", Name);
+    W.printHex("RVA", RVA);
+  }
+}
+
+void COFFDumper::printCOFFDirectives() {
+  for (const SectionRef &Section : Obj->sections()) {
+    StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName());
+    if (Name != ".drectve")
+      continue;
+
+    StringRef Contents =
+        unwrapOrError(Obj->getFileName(), Section.getContents());
+    W.printString("Directive(s)", Contents);
+  }
+}
+
+static std::string getBaseRelocTypeName(uint8_t Type) {
+  switch (Type) {
+  case COFF::IMAGE_REL_BASED_ABSOLUTE: return "ABSOLUTE";
+  case COFF::IMAGE_REL_BASED_HIGH: return "HIGH";
+  case COFF::IMAGE_REL_BASED_LOW: return "LOW";
+  case COFF::IMAGE_REL_BASED_HIGHLOW: return "HIGHLOW";
+  case COFF::IMAGE_REL_BASED_HIGHADJ: return "HIGHADJ";
+  case COFF::IMAGE_REL_BASED_ARM_MOV32T: return "ARM_MOV32(T)";
+  case COFF::IMAGE_REL_BASED_DIR64: return "DIR64";
+  default: return "unknown (" + llvm::utostr(Type) + ")";
+  }
+}
+
+void COFFDumper::printCOFFBaseReloc() {
+  ListScope D(W, "BaseReloc");
+  for (const BaseRelocRef &I : Obj->base_relocs()) {
+    uint8_t Type;
+    uint32_t RVA;
+    if (Error E = I.getRVA(RVA))
+      reportError(std::move(E), Obj->getFileName());
+    if (Error E = I.getType(Type))
+      reportError(std::move(E), Obj->getFileName());
+    DictScope Import(W, "Entry");
+    W.printString("Type", getBaseRelocTypeName(Type));
+    W.printHex("Address", RVA);
+  }
+}
+
+void COFFDumper::printCOFFResources() {
+  ListScope ResourcesD(W, "Resources");
+  for (const SectionRef &S : Obj->sections()) {
+    StringRef Name = unwrapOrError(Obj->getFileName(), S.getName());
+    if (!Name.startswith(".rsrc"))
+      continue;
+
+    StringRef Ref = unwrapOrError(Obj->getFileName(), S.getContents());
+
+    if ((Name == ".rsrc") || (Name == ".rsrc$01")) {
+      ResourceSectionRef RSF;
+      Error E = RSF.load(Obj, S);
+      if (E)
+        reportError(std::move(E), Obj->getFileName());
+      auto &BaseTable = unwrapOrError(Obj->getFileName(), RSF.getBaseTable());
+      W.printNumber("Total Number of Resources",
+                    countTotalTableEntries(RSF, BaseTable, "Type"));
+      W.printHex("Base Table Address",
+                 Obj->getCOFFSection(S)->PointerToRawData);
+      W.startLine() << "\n";
+      printResourceDirectoryTable(RSF, BaseTable, "Type");
+    }
+    if (opts::SectionData)
+      W.printBinaryBlock(Name.str() + " Data", Ref);
+  }
+}
+
+uint32_t
+COFFDumper::countTotalTableEntries(ResourceSectionRef RSF,
+                                   const coff_resource_dir_table &Table,
+                                   StringRef Level) {
+  uint32_t TotalEntries = 0;
+  for (int i = 0; i < Table.NumberOfNameEntries + Table.NumberOfIDEntries;
+       i++) {
+    auto Entry = unwrapOrError(Obj->getFileName(), RSF.getTableEntry(Table, i));
+    if (Entry.Offset.isSubDir()) {
+      StringRef NextLevel;
+      if (Level == "Name")
+        NextLevel = "Language";
+      else
+        NextLevel = "Name";
+      auto &NextTable =
+          unwrapOrError(Obj->getFileName(), RSF.getEntrySubDir(Entry));
+      TotalEntries += countTotalTableEntries(RSF, NextTable, NextLevel);
+    } else {
+      TotalEntries += 1;
+    }
+  }
+  return TotalEntries;
+}
+
+void COFFDumper::printResourceDirectoryTable(
+    ResourceSectionRef RSF, const coff_resource_dir_table &Table,
+    StringRef Level) {
+
+  W.printNumber("Number of String Entries", Table.NumberOfNameEntries);
+  W.printNumber("Number of ID Entries", Table.NumberOfIDEntries);
+
+  // Iterate through level in resource directory tree.
+  for (int i = 0; i < Table.NumberOfNameEntries + Table.NumberOfIDEntries;
+       i++) {
+    auto Entry = unwrapOrError(Obj->getFileName(), RSF.getTableEntry(Table, i));
+    StringRef Name;
+    SmallString<20> IDStr;
+    raw_svector_ostream OS(IDStr);
+    if (i < Table.NumberOfNameEntries) {
+      ArrayRef<UTF16> RawEntryNameString =
+          unwrapOrError(Obj->getFileName(), RSF.getEntryNameString(Entry));
+      std::vector<UTF16> EndianCorrectedNameString;
+      if (llvm::sys::IsBigEndianHost) {
+        EndianCorrectedNameString.resize(RawEntryNameString.size() + 1);
+        std::copy(RawEntryNameString.begin(), RawEntryNameString.end(),
+                  EndianCorrectedNameString.begin() + 1);
+        EndianCorrectedNameString[0] = UNI_UTF16_BYTE_ORDER_MARK_SWAPPED;
+        RawEntryNameString = makeArrayRef(EndianCorrectedNameString);
+      }
+      std::string EntryNameString;
+      if (!llvm::convertUTF16ToUTF8String(RawEntryNameString, EntryNameString))
+        reportError(errorCodeToError(object_error::parse_failed),
+                    Obj->getFileName());
+      OS << ": ";
+      OS << EntryNameString;
+    } else {
+      if (Level == "Type") {
+        OS << ": ";
+        printResourceTypeName(Entry.Identifier.ID, OS);
+      } else {
+        OS << ": (ID " << Entry.Identifier.ID << ")";
+      }
+    }
+    Name = StringRef(IDStr);
+    ListScope ResourceType(W, Level.str() + Name.str());
+    if (Entry.Offset.isSubDir()) {
+      W.printHex("Table Offset", Entry.Offset.value());
+      StringRef NextLevel;
+      if (Level == "Name")
+        NextLevel = "Language";
+      else
+        NextLevel = "Name";
+      auto &NextTable =
+          unwrapOrError(Obj->getFileName(), RSF.getEntrySubDir(Entry));
+      printResourceDirectoryTable(RSF, NextTable, NextLevel);
+    } else {
+      W.printHex("Entry Offset", Entry.Offset.value());
+      char FormattedTime[20] = {};
+      time_t TDS = time_t(Table.TimeDateStamp);
+      strftime(FormattedTime, 20, "%Y-%m-%d %H:%M:%S", gmtime(&TDS));
+      W.printHex("Time/Date Stamp", FormattedTime, Table.TimeDateStamp);
+      W.printNumber("Major Version", Table.MajorVersion);
+      W.printNumber("Minor Version", Table.MinorVersion);
+      W.printNumber("Characteristics", Table.Characteristics);
+      ListScope DataScope(W, "Data");
+      auto &DataEntry =
+          unwrapOrError(Obj->getFileName(), RSF.getEntryData(Entry));
+      W.printHex("DataRVA", DataEntry.DataRVA);
+      W.printNumber("DataSize", DataEntry.DataSize);
+      W.printNumber("Codepage", DataEntry.Codepage);
+      W.printNumber("Reserved", DataEntry.Reserved);
+      StringRef Contents =
+          unwrapOrError(Obj->getFileName(), RSF.getContents(DataEntry));
+      W.printBinaryBlock("Data", Contents);
+    }
+  }
+}
+
+void COFFDumper::printStackMap() const {
+  SectionRef StackMapSection;
+  for (auto Sec : Obj->sections()) {
+    StringRef Name;
+    if (Expected<StringRef> NameOrErr = Sec.getName())
+      Name = *NameOrErr;
+    else
+      consumeError(NameOrErr.takeError());
+
+    if (Name == ".llvm_stackmaps") {
+      StackMapSection = Sec;
+      break;
+    }
+  }
+
+  if (StackMapSection == SectionRef())
+    return;
+
+  StringRef StackMapContents =
+      unwrapOrError(Obj->getFileName(), StackMapSection.getContents());
+  ArrayRef<uint8_t> StackMapContentsArray =
+      arrayRefFromStringRef(StackMapContents);
+
+  if (Obj->isLittleEndian())
+    prettyPrintStackMap(
+        W, StackMapParser<support::little>(StackMapContentsArray));
+  else
+    prettyPrintStackMap(
+        W, StackMapParser<support::big>(StackMapContentsArray));
+}
+
+void COFFDumper::printAddrsig() {
+  SectionRef AddrsigSection;
+  for (auto Sec : Obj->sections()) {
+    StringRef Name;
+    if (Expected<StringRef> NameOrErr = Sec.getName())
+      Name = *NameOrErr;
+    else
+      consumeError(NameOrErr.takeError());
+
+    if (Name == ".llvm_addrsig") {
+      AddrsigSection = Sec;
+      break;
+    }
+  }
+
+  if (AddrsigSection == SectionRef())
+    return;
+
+  StringRef AddrsigContents =
+      unwrapOrError(Obj->getFileName(), AddrsigSection.getContents());
+  ArrayRef<uint8_t> AddrsigContentsArray(AddrsigContents.bytes_begin(),
+                                         AddrsigContents.size());
+
+  ListScope L(W, "Addrsig");
+  const uint8_t *Cur = AddrsigContents.bytes_begin();
+  const uint8_t *End = AddrsigContents.bytes_end();
+  while (Cur != End) {
+    unsigned Size;
+    const char *Err;
+    uint64_t SymIndex = decodeULEB128(Cur, &Size, End, &Err);
+    if (Err)
+      reportError(createError(Err), Obj->getFileName());
+
+    W.printNumber("Sym", getSymbolName(SymIndex), SymIndex);
+    Cur += Size;
+  }
+}
+
+void COFFDumper::printCGProfile() {
+  SectionRef CGProfileSection;
+  for (SectionRef Sec : Obj->sections()) {
+    StringRef Name = unwrapOrError(Obj->getFileName(), Sec.getName());
+    if (Name == ".llvm.call-graph-profile") {
+      CGProfileSection = Sec;
+      break;
+    }
+  }
+
+  if (CGProfileSection == SectionRef())
+    return;
+
+  StringRef CGProfileContents =
+      unwrapOrError(Obj->getFileName(), CGProfileSection.getContents());
+  BinaryStreamReader Reader(CGProfileContents, llvm::support::little);
+
+  ListScope L(W, "CGProfile");
+  while (!Reader.empty()) {
+    uint32_t FromIndex, ToIndex;
+    uint64_t Count;
+    if (Error Err = Reader.readInteger(FromIndex))
+      reportError(std::move(Err), Obj->getFileName());
+    if (Error Err = Reader.readInteger(ToIndex))
+      reportError(std::move(Err), Obj->getFileName());
+    if (Error Err = Reader.readInteger(Count))
+      reportError(std::move(Err), Obj->getFileName());
+
+    DictScope D(W, "CGProfileEntry");
+    W.printNumber("From", getSymbolName(FromIndex), FromIndex);
+    W.printNumber("To", getSymbolName(ToIndex), ToIndex);
+    W.printNumber("Weight", Count);
+  }
+}
+
+StringRef COFFDumper::getSymbolName(uint32_t Index) {
+  Expected<COFFSymbolRef> Sym = Obj->getSymbol(Index);
+  if (!Sym)
+    reportError(Sym.takeError(), Obj->getFileName());
+
+  Expected<StringRef> SymName = Obj->getSymbolName(*Sym);
+  if (!SymName)
+    reportError(SymName.takeError(), Obj->getFileName());
+
+  return *SymName;
+}
+
+void llvm::dumpCodeViewMergedTypes(ScopedPrinter &Writer,
+                                   ArrayRef<ArrayRef<uint8_t>> IpiRecords,
+                                   ArrayRef<ArrayRef<uint8_t>> TpiRecords) {
+  TypeTableCollection TpiTypes(TpiRecords);
+  {
+    ListScope S(Writer, "MergedTypeStream");
+    TypeDumpVisitor TDV(TpiTypes, &Writer, opts::CodeViewSubsectionBytes);
+    if (Error Err = codeview::visitTypeStream(TpiTypes, TDV))
+      reportError(std::move(Err), "<?>");
+    Writer.flush();
+  }
+
+  // Flatten the id stream and print it next. The ID stream refers to names from
+  // the type stream.
+  TypeTableCollection IpiTypes(IpiRecords);
+  {
+    ListScope S(Writer, "MergedIDStream");
+    TypeDumpVisitor TDV(TpiTypes, &Writer, opts::CodeViewSubsectionBytes);
+    TDV.setIpiTypes(IpiTypes);
+    if (Error Err = codeview::visitTypeStream(IpiTypes, TDV))
+      reportError(std::move(Err), "<?>");
+    Writer.flush();
+  }
+}
+
+void COFFDumper::printCOFFTLSDirectory() {
+  if (Obj->is64())
+    printCOFFTLSDirectory(Obj->getTLSDirectory64());
+  else
+    printCOFFTLSDirectory(Obj->getTLSDirectory32());
+}
+
+template <typename IntTy>
+void COFFDumper::printCOFFTLSDirectory(
+    const coff_tls_directory<IntTy> *TlsTable) {
+  DictScope D(W, "TLSDirectory");
+  if (!TlsTable)
+    return;
+
+  W.printHex("StartAddressOfRawData", TlsTable->StartAddressOfRawData);
+  W.printHex("EndAddressOfRawData", TlsTable->EndAddressOfRawData);
+  W.printHex("AddressOfIndex", TlsTable->AddressOfIndex);
+  W.printHex("AddressOfCallBacks", TlsTable->AddressOfCallBacks);
+  W.printHex("SizeOfZeroFill", TlsTable->SizeOfZeroFill);
+  W.printFlags("Characteristics", TlsTable->Characteristics,
+               makeArrayRef(ImageSectionCharacteristics),
+               COFF::SectionCharacteristics(COFF::IMAGE_SCN_ALIGN_MASK));
+}
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/COFFImportDumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/COFFImportDumper.cpp
new file mode 100644
index 0000000000..c9d5e82263
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/COFFImportDumper.cpp
@@ -0,0 +1,58 @@
+//===-- COFFImportDumper.cpp - COFF import library dumper -------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file implements the COFF import library dumper for llvm-readobj.
+///
+//===----------------------------------------------------------------------===//
+
+#include "llvm/BinaryFormat/COFF.h"
+#include "llvm/Object/COFF.h"
+#include "llvm/Object/COFFImportFile.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+using namespace llvm::object;
+
+namespace llvm {
+
+void dumpCOFFImportFile(const COFFImportFile *File, ScopedPrinter &Writer) {
+  Writer.startLine() << '\n';
+  Writer.printString("File", File->getFileName());
+  Writer.printString("Format", "COFF-import-file");
+
+  const coff_import_header *H = File->getCOFFImportHeader();
+  switch (H->getType()) {
+  case COFF::IMPORT_CODE:  Writer.printString("Type", "code"); break;
+  case COFF::IMPORT_DATA:  Writer.printString("Type", "data"); break;
+  case COFF::IMPORT_CONST: Writer.printString("Type", "const"); break;
+  }
+
+  switch (H->getNameType()) {
+  case COFF::IMPORT_ORDINAL:
+    Writer.printString("Name type", "ordinal");
+    break;
+  case COFF::IMPORT_NAME:
+    Writer.printString("Name type", "name");
+    break;
+  case COFF::IMPORT_NAME_NOPREFIX:
+    Writer.printString("Name type", "noprefix");
+    break;
+  case COFF::IMPORT_NAME_UNDECORATE:
+    Writer.printString("Name type", "undecorate");
+    break;
+  }
+
+  for (const object::BasicSymbolRef &Sym : File->symbols()) {
+    raw_ostream &OS = Writer.startLine();
+    OS << "Symbol: ";
+    cantFail(Sym.printName(OS));
+    OS << "\n";
+  }
+}
+
+} // namespace llvm
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/DwarfCFIEHPrinter.h b/contrib/libs/llvm12/tools/llvm-readobj/DwarfCFIEHPrinter.h
new file mode 100644
index 0000000000..2dfe21684a
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/DwarfCFIEHPrinter.h
@@ -0,0 +1,240 @@
+//===--- DwarfCFIEHPrinter.h - DWARF-based Unwind Information Printer -----===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_READOBJ_DWARFCFIEHPRINTER_H
+#define LLVM_TOOLS_LLVM_READOBJ_DWARFCFIEHPRINTER_H
+
+#include "llvm-readobj.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/BinaryFormat/Dwarf.h"
+#include "llvm/DebugInfo/DWARF/DWARFContext.h"
+#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
+#include "llvm/DebugInfo/DWARF/DWARFDebugFrame.h"
+#include "llvm/Object/ELF.h"
+#include "llvm/Object/ELFObjectFile.h"
+#include "llvm/Object/ELFTypes.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/type_traits.h"
+
+namespace llvm {
+namespace DwarfCFIEH {
+
+template <typename ELFT> class PrinterContext {
+  using Elf_Shdr = typename ELFT::Shdr;
+  using Elf_Phdr = typename ELFT::Phdr;
+
+  ScopedPrinter &W;
+  const object::ELFObjectFile<ELFT> &ObjF;
+
+  void printEHFrameHdr(const Elf_Phdr *EHFramePHdr) const;
+  void printEHFrame(const Elf_Shdr *EHFrameShdr) const;
+
+public:
+  PrinterContext(ScopedPrinter &W, const object::ELFObjectFile<ELFT> &ObjF)
+      : W(W), ObjF(ObjF) {}
+
+  void printUnwindInformation() const;
+};
+
+template <class ELFT>
+static const typename ELFT::Shdr *
+findSectionByAddress(const object::ELFObjectFile<ELFT> &ObjF, uint64_t Addr) {
+  Expected<typename ELFT::ShdrRange> SectionsOrErr =
+      ObjF.getELFFile().sections();
+  if (!SectionsOrErr)
+    reportError(SectionsOrErr.takeError(), ObjF.getFileName());
+
+  for (const typename ELFT::Shdr &Shdr : *SectionsOrErr)
+    if (Shdr.sh_addr == Addr)
+      return &Shdr;
+  return nullptr;
+}
+
+template <typename ELFT>
+void PrinterContext<ELFT>::printUnwindInformation() const {
+  const object::ELFFile<ELFT> &Obj = ObjF.getELFFile();
+
+  Expected<typename ELFT::PhdrRange> PhdrsOrErr = Obj.program_headers();
+  if (!PhdrsOrErr)
+    reportError(PhdrsOrErr.takeError(), ObjF.getFileName());
+
+  for (const Elf_Phdr &Phdr : *PhdrsOrErr) {
+    if (Phdr.p_type != ELF::PT_GNU_EH_FRAME)
+      continue;
+
+    if (Phdr.p_memsz != Phdr.p_filesz)
+      reportError(object::createError(
+                      "p_memsz does not match p_filesz for GNU_EH_FRAME"),
+                  ObjF.getFileName());
+    printEHFrameHdr(&Phdr);
+    break;
+  }
+
+  Expected<typename ELFT::ShdrRange> SectionsOrErr = Obj.sections();
+  if (!SectionsOrErr)
+    reportError(SectionsOrErr.takeError(), ObjF.getFileName());
+
+  for (const Elf_Shdr &Shdr : *SectionsOrErr) {
+    Expected<StringRef> NameOrErr = Obj.getSectionName(Shdr);
+    if (!NameOrErr)
+      reportError(NameOrErr.takeError(), ObjF.getFileName());
+    if (*NameOrErr == ".eh_frame")
+      printEHFrame(&Shdr);
+  }
+}
+
+template <typename ELFT>
+void PrinterContext<ELFT>::printEHFrameHdr(const Elf_Phdr *EHFramePHdr) const {
+  DictScope L(W, "EHFrameHeader");
+  uint64_t EHFrameHdrAddress = EHFramePHdr->p_vaddr;
+  W.startLine() << format("Address: 0x%" PRIx64 "\n", EHFrameHdrAddress);
+  W.startLine() << format("Offset: 0x%" PRIx64 "\n", (uint64_t)EHFramePHdr->p_offset);
+  W.startLine() << format("Size: 0x%" PRIx64 "\n", (uint64_t)EHFramePHdr->p_memsz);
+
+  const object::ELFFile<ELFT> &Obj = ObjF.getELFFile();
+  if (const Elf_Shdr *EHFrameHdr =
+          findSectionByAddress(ObjF, EHFramePHdr->p_vaddr)) {
+    Expected<StringRef> NameOrErr = Obj.getSectionName(*EHFrameHdr);
+    if (!NameOrErr)
+      reportError(NameOrErr.takeError(), ObjF.getFileName());
+    W.printString("Corresponding Section", *NameOrErr);
+  }
+
+  Expected<ArrayRef<uint8_t>> Content = Obj.getSegmentContents(*EHFramePHdr);
+  if (!Content)
+    reportError(Content.takeError(), ObjF.getFileName());
+
+  DataExtractor DE(*Content,
+                   ELFT::TargetEndianness == support::endianness::little,
+                   ELFT::Is64Bits ? 8 : 4);
+
+  DictScope D(W, "Header");
+  uint64_t Offset = 0;
+
+  auto Version = DE.getU8(&Offset);
+  W.printNumber("version", Version);
+  if (Version != 1)
+    reportError(
+        object::createError("only version 1 of .eh_frame_hdr is supported"),
+        ObjF.getFileName());
+
+  uint64_t EHFramePtrEnc = DE.getU8(&Offset);
+  W.startLine() << format("eh_frame_ptr_enc: 0x%" PRIx64 "\n", EHFramePtrEnc);
+  if (EHFramePtrEnc != (dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4))
+    reportError(object::createError("unexpected encoding eh_frame_ptr_enc"),
+                ObjF.getFileName());
+
+  uint64_t FDECountEnc = DE.getU8(&Offset);
+  W.startLine() << format("fde_count_enc: 0x%" PRIx64 "\n", FDECountEnc);
+  if (FDECountEnc != dwarf::DW_EH_PE_udata4)
+    reportError(object::createError("unexpected encoding fde_count_enc"),
+                ObjF.getFileName());
+
+  uint64_t TableEnc = DE.getU8(&Offset);
+  W.startLine() << format("table_enc: 0x%" PRIx64 "\n", TableEnc);
+  if (TableEnc != (dwarf::DW_EH_PE_datarel | dwarf::DW_EH_PE_sdata4))
+    reportError(object::createError("unexpected encoding table_enc"),
+                ObjF.getFileName());
+
+  auto EHFramePtr = DE.getSigned(&Offset, 4) + EHFrameHdrAddress + 4;
+  W.startLine() << format("eh_frame_ptr: 0x%" PRIx64 "\n", EHFramePtr);
+
+  auto FDECount = DE.getUnsigned(&Offset, 4);
+  W.printNumber("fde_count", FDECount);
+
+  unsigned NumEntries = 0;
+  uint64_t PrevPC = 0;
+  while (Offset + 8 <= EHFramePHdr->p_memsz && NumEntries < FDECount) {
+    DictScope D(W, std::string("entry ") + std::to_string(NumEntries));
+
+    auto InitialPC = DE.getSigned(&Offset, 4) + EHFrameHdrAddress;
+    W.startLine() << format("initial_location: 0x%" PRIx64 "\n", InitialPC);
+    auto Address = DE.getSigned(&Offset, 4) + EHFrameHdrAddress;
+    W.startLine() << format("address: 0x%" PRIx64 "\n", Address);
+
+    if (InitialPC < PrevPC)
+      reportError(object::createError("initial_location is out of order"),
+                  ObjF.getFileName());
+
+    PrevPC = InitialPC;
+    ++NumEntries;
+  }
+}
+
+template <typename ELFT>
+void PrinterContext<ELFT>::printEHFrame(const Elf_Shdr *EHFrameShdr) const {
+  uint64_t Address = EHFrameShdr->sh_addr;
+  uint64_t ShOffset = EHFrameShdr->sh_offset;
+  W.startLine() << format(".eh_frame section at offset 0x%" PRIx64
+                          " address 0x%" PRIx64 ":\n",
+                          ShOffset, Address);
+  W.indent();
+
+  Expected<ArrayRef<uint8_t>> DataOrErr =
+      ObjF.getELFFile().getSectionContents(*EHFrameShdr);
+  if (!DataOrErr)
+    reportError(DataOrErr.takeError(), ObjF.getFileName());
+
+  // Construct DWARFDataExtractor to handle relocations ("PC Begin" fields).
+  std::unique_ptr<DWARFContext> DICtx = DWARFContext::create(ObjF, nullptr);
+  DWARFDataExtractor DE(DICtx->getDWARFObj(),
+                        DICtx->getDWARFObj().getEHFrameSection(),
+                        ELFT::TargetEndianness == support::endianness::little,
+                        ELFT::Is64Bits ? 8 : 4);
+  DWARFDebugFrame EHFrame(Triple::ArchType(ObjF.getArch()), /*IsEH=*/true,
+                          /*EHFrameAddress=*/Address);
+  if (Error E = EHFrame.parse(DE))
+    reportError(std::move(E), ObjF.getFileName());
+
+  for (const dwarf::FrameEntry &Entry : EHFrame) {
+    if (const dwarf::CIE *CIE = dyn_cast<dwarf::CIE>(&Entry)) {
+      W.startLine() << format("[0x%" PRIx64 "] CIE length=%" PRIu64 "\n",
+                              Address + CIE->getOffset(), CIE->getLength());
+      W.indent();
+
+      W.printNumber("version", CIE->getVersion());
+      W.printString("augmentation", CIE->getAugmentationString());
+      W.printNumber("code_alignment_factor", CIE->getCodeAlignmentFactor());
+      W.printNumber("data_alignment_factor", CIE->getDataAlignmentFactor());
+      W.printNumber("return_address_register", CIE->getReturnAddressRegister());
+    } else {
+      const dwarf::FDE *FDE = cast<dwarf::FDE>(&Entry);
+      W.startLine() << format("[0x%" PRIx64 "] FDE length=%" PRIu64
+                              " cie=[0x%" PRIx64 "]\n",
+                              Address + FDE->getOffset(), FDE->getLength(),
+                              Address + FDE->getLinkedCIE()->getOffset());
+      W.indent();
+
+      W.startLine() << format("initial_location: 0x%" PRIx64 "\n",
+                              FDE->getInitialLocation());
+      W.startLine() << format(
+          "address_range: 0x%" PRIx64 " (end : 0x%" PRIx64 ")\n",
+          FDE->getAddressRange(),
+          FDE->getInitialLocation() + FDE->getAddressRange());
+    }
+
+    W.getOStream() << "\n";
+    W.startLine() << "Program:\n";
+    W.indent();
+    Entry.cfis().dump(W.getOStream(), DIDumpOptions(), nullptr,
+                      W.getIndentLevel());
+    W.unindent();
+    W.unindent();
+    W.getOStream() << "\n";
+  }
+
+  W.unindent();
+}
+} // namespace DwarfCFIEH
+} // namespace llvm
+
+#endif
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/ELFDumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/ELFDumper.cpp
new file mode 100644
index 0000000000..0f508f8dc0
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/ELFDumper.cpp
@@ -0,0 +1,6763 @@
+//===- ELFDumper.cpp - ELF-specific dumper --------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file implements the ELF-specific dumper for llvm-readobj.
+///
+//===----------------------------------------------------------------------===//
+
+#include "ARMEHABIPrinter.h"
+#include "DwarfCFIEHPrinter.h"
+#include "ObjDumper.h"
+#include "StackMapPrinter.h"
+#include "llvm-readobj.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/MapVector.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/PointerIntPair.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/BinaryFormat/AMDGPUMetadataVerifier.h"
+#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/Demangle/Demangle.h"
+#include "llvm/Object/ELF.h"
+#include "llvm/Object/ELFObjectFile.h"
+#include "llvm/Object/ELFTypes.h"
+#include "llvm/Object/Error.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Object/RelocationResolver.h"
+#include "llvm/Object/StackMapParser.h"
+#include "llvm/Support/AMDGPUMetadata.h"
+#include "llvm/Support/ARMAttributeParser.h"
+#include "llvm/Support/ARMBuildAttributes.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/FormatVariadic.h"
+#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/LEB128.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/MipsABIFlags.h"
+#include "llvm/Support/RISCVAttributeParser.h"
+#include "llvm/Support/RISCVAttributes.h"
+#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/raw_ostream.h"
+#include <algorithm>
+#include <cinttypes>
+#include <cstddef>
+#include <cstdint>
+#include <cstdlib>
+#include <iterator>
+#include <memory>
+#include <string>
+#include <system_error>
+#include <vector>
+
+using namespace llvm;
+using namespace llvm::object;
+using namespace ELF;
+
+#define LLVM_READOBJ_ENUM_CASE(ns, enum)                                       \
+  case ns::enum:                                                               \
+    return #enum;
+
+#define ENUM_ENT(enum, altName)                                                \
+  { #enum, altName, ELF::enum }
+
+#define ENUM_ENT_1(enum)                                                       \
+  { #enum, #enum, ELF::enum }
+
+namespace {
+
+template <class ELFT> struct RelSymbol {
+  RelSymbol(const typename ELFT::Sym *S, StringRef N)
+      : Sym(S), Name(N.str()) {}
+  const typename ELFT::Sym *Sym;
+  std::string Name;
+};
+
+/// Represents a contiguous uniform range in the file. We cannot just create a
+/// range directly because when creating one of these from the .dynamic table
+/// the size, entity size and virtual address are different entries in arbitrary
+/// order (DT_REL, DT_RELSZ, DT_RELENT for example).
+struct DynRegionInfo {
+  DynRegionInfo(const Binary &Owner, const ObjDumper &D)
+      : Obj(&Owner), Dumper(&D) {}
+  DynRegionInfo(const Binary &Owner, const ObjDumper &D, const uint8_t *A,
+                uint64_t S, uint64_t ES)
+      : Addr(A), Size(S), EntSize(ES), Obj(&Owner), Dumper(&D) {}
+
+  /// Address in current address space.
+  const uint8_t *Addr = nullptr;
+  /// Size in bytes of the region.
+  uint64_t Size = 0;
+  /// Size of each entity in the region.
+  uint64_t EntSize = 0;
+
+  /// Owner object. Used for error reporting.
+  const Binary *Obj;
+  /// Dumper used for error reporting.
+  const ObjDumper *Dumper;
+  /// Error prefix. Used for error reporting to provide more information.
+  std::string Context;
+  /// Region size name. Used for error reporting.
+  StringRef SizePrintName = "size";
+  /// Entry size name. Used for error reporting. If this field is empty, errors
+  /// will not mention the entry size.
+  StringRef EntSizePrintName = "entry size";
+
+  template <typename Type> ArrayRef<Type> getAsArrayRef() const {
+    const Type *Start = reinterpret_cast<const Type *>(Addr);
+    if (!Start)
+      return {Start, Start};
+
+    const uint64_t Offset =
+        Addr - (const uint8_t *)Obj->getMemoryBufferRef().getBufferStart();
+    const uint64_t ObjSize = Obj->getMemoryBufferRef().getBufferSize();
+
+    if (Size > ObjSize - Offset) {
+      Dumper->reportUniqueWarning(
+          "unable to read data at 0x" + Twine::utohexstr(Offset) +
+          " of size 0x" + Twine::utohexstr(Size) + " (" + SizePrintName +
+          "): it goes past the end of the file of size 0x" +
+          Twine::utohexstr(ObjSize));
+      return {Start, Start};
+    }
+
+    if (EntSize == sizeof(Type) && (Size % EntSize == 0))
+      return {Start, Start + (Size / EntSize)};
+
+    std::string Msg;
+    if (!Context.empty())
+      Msg += Context + " has ";
+
+    Msg += ("invalid " + SizePrintName + " (0x" + Twine::utohexstr(Size) + ")")
+               .str();
+    if (!EntSizePrintName.empty())
+      Msg +=
+          (" or " + EntSizePrintName + " (0x" + Twine::utohexstr(EntSize) + ")")
+              .str();
+
+    Dumper->reportUniqueWarning(Msg);
+    return {Start, Start};
+  }
+};
+
+struct GroupMember {
+  StringRef Name;
+  uint64_t Index;
+};
+
+struct GroupSection {
+  StringRef Name;
+  std::string Signature;
+  uint64_t ShName;
+  uint64_t Index;
+  uint32_t Link;
+  uint32_t Info;
+  uint32_t Type;
+  std::vector<GroupMember> Members;
+};
+
+namespace {
+
+struct NoteType {
+  uint32_t ID;
+  StringRef Name;
+};
+
+} // namespace
+
+template <class ELFT> class Relocation {
+public:
+  Relocation(const typename ELFT::Rel &R, bool IsMips64EL)
+      : Type(R.getType(IsMips64EL)), Symbol(R.getSymbol(IsMips64EL)),
+        Offset(R.r_offset), Info(R.r_info) {}
+
+  Relocation(const typename ELFT::Rela &R, bool IsMips64EL)
+      : Relocation((const typename ELFT::Rel &)R, IsMips64EL) {
+    Addend = R.r_addend;
+  }
+
+  uint32_t Type;
+  uint32_t Symbol;
+  typename ELFT::uint Offset;
+  typename ELFT::uint Info;
+  Optional<int64_t> Addend;
+};
+
+template <class ELFT> class MipsGOTParser;
+
+template <typename ELFT> class ELFDumper : public ObjDumper {
+  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
+
+public:
+  ELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer);
+
+  void printUnwindInfo() override;
+  void printNeededLibraries() override;
+  void printHashTable() override;
+  void printGnuHashTable() override;
+  void printLoadName() override;
+  void printVersionInfo() override;
+  void printArchSpecificInfo() override;
+  void printStackMap() const override;
+
+  const object::ELFObjectFile<ELFT> &getElfObject() const { return ObjF; };
+
+  std::string describe(const Elf_Shdr &Sec) const;
+
+  unsigned getHashTableEntSize() const {
+    // EM_S390 and ELF::EM_ALPHA platforms use 8-bytes entries in SHT_HASH
+    // sections. This violates the ELF specification.
+    if (Obj.getHeader().e_machine == ELF::EM_S390 ||
+        Obj.getHeader().e_machine == ELF::EM_ALPHA)
+      return 8;
+    return 4;
+  }
+
+  Elf_Dyn_Range dynamic_table() const {
+    // A valid .dynamic section contains an array of entries terminated
+    // with a DT_NULL entry. However, sometimes the section content may
+    // continue past the DT_NULL entry, so to dump the section correctly,
+    // we first find the end of the entries by iterating over them.
+    Elf_Dyn_Range Table = DynamicTable.template getAsArrayRef<Elf_Dyn>();
+
+    size_t Size = 0;
+    while (Size < Table.size())
+      if (Table[Size++].getTag() == DT_NULL)
+        break;
+
+    return Table.slice(0, Size);
+  }
+
+  Elf_Sym_Range dynamic_symbols() const {
+    if (!DynSymRegion)
+      return Elf_Sym_Range();
+    return DynSymRegion->template getAsArrayRef<Elf_Sym>();
+  }
+
+  const Elf_Shdr *findSectionByName(StringRef Name) const;
+
+  StringRef getDynamicStringTable() const { return DynamicStringTable; }
+
+protected:
+  virtual void printVersionSymbolSection(const Elf_Shdr *Sec) = 0;
+  virtual void printVersionDefinitionSection(const Elf_Shdr *Sec) = 0;
+  virtual void printVersionDependencySection(const Elf_Shdr *Sec) = 0;
+
+  void
+  printDependentLibsHelper(function_ref<void(const Elf_Shdr &)> OnSectionStart,
+                           function_ref<void(StringRef, uint64_t)> OnLibEntry);
+
+  virtual void printRelRelaReloc(const Relocation<ELFT> &R,
+                                 const RelSymbol<ELFT> &RelSym) = 0;
+  virtual void printRelrReloc(const Elf_Relr &R) = 0;
+  virtual void printDynamicRelocHeader(unsigned Type, StringRef Name,
+                                       const DynRegionInfo &Reg) {}
+  void printReloc(const Relocation<ELFT> &R, unsigned RelIndex,
+                  const Elf_Shdr &Sec, const Elf_Shdr *SymTab);
+  void printDynamicReloc(const Relocation<ELFT> &R);
+  void printDynamicRelocationsHelper();
+  void printRelocationsHelper(const Elf_Shdr &Sec);
+  void forEachRelocationDo(
+      const Elf_Shdr &Sec, bool RawRelr,
+      llvm::function_ref<void(const Relocation<ELFT> &, unsigned,
+                              const Elf_Shdr &, const Elf_Shdr *)>
+          RelRelaFn,
+      llvm::function_ref<void(const Elf_Relr &)> RelrFn);
+
+  virtual void printSymtabMessage(const Elf_Shdr *Symtab, size_t Offset,
+                                  bool NonVisibilityBitsUsed) const {};
+  virtual void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
+                           DataRegion<Elf_Word> ShndxTable,
+                           Optional<StringRef> StrTable, bool IsDynamic,
+                           bool NonVisibilityBitsUsed) const = 0;
+
+  virtual void printMipsABIFlags() = 0;
+  virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0;
+  virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0;
+
+  Expected<ArrayRef<Elf_Versym>>
+  getVersionTable(const Elf_Shdr &Sec, ArrayRef<Elf_Sym> *SymTab,
+                  StringRef *StrTab, const Elf_Shdr **SymTabSec) const;
+  StringRef getPrintableSectionName(const Elf_Shdr &Sec) const;
+
+  std::vector<GroupSection> getGroups();
+
+  bool printFunctionStackSize(uint64_t SymValue,
+                              Optional<const Elf_Shdr *> FunctionSec,
+                              const Elf_Shdr &StackSizeSec, DataExtractor Data,
+                              uint64_t *Offset);
+  void printStackSize(const Relocation<ELFT> &R, const Elf_Shdr &RelocSec,
+                      unsigned Ndx, const Elf_Shdr *SymTab,
+                      const Elf_Shdr *FunctionSec, const Elf_Shdr &StackSizeSec,
+                      const RelocationResolver &Resolver, DataExtractor Data);
+  virtual void printStackSizeEntry(uint64_t Size, StringRef FuncName) = 0;
+
+  void printRelocatableStackSizes(std::function<void()> PrintHeader);
+  void printNonRelocatableStackSizes(std::function<void()> PrintHeader);
+
+  const object::ELFObjectFile<ELFT> &ObjF;
+  const ELFFile<ELFT> &Obj;
+  StringRef FileName;
+
+  Expected<DynRegionInfo> createDRI(uint64_t Offset, uint64_t Size,
+                                    uint64_t EntSize) {
+    if (Offset + Size < Offset || Offset + Size > Obj.getBufSize())
+      return createError("offset (0x" + Twine::utohexstr(Offset) +
+                         ") + size (0x" + Twine::utohexstr(Size) +
+                         ") is greater than the file size (0x" +
+                         Twine::utohexstr(Obj.getBufSize()) + ")");
+    return DynRegionInfo(ObjF, *this, Obj.base() + Offset, Size, EntSize);
+  }
+
+  void printAttributes();
+  void printMipsReginfo();
+  void printMipsOptions();
+
+  std::pair<const Elf_Phdr *, const Elf_Shdr *> findDynamic();
+  void loadDynamicTable();
+  void parseDynamicTable();
+
+  Expected<StringRef> getSymbolVersion(const Elf_Sym &Sym,
+                                       bool &IsDefault) const;
+  Expected<SmallVector<Optional<VersionEntry>, 0> *> getVersionMap() const;
+
+  DynRegionInfo DynRelRegion;
+  DynRegionInfo DynRelaRegion;
+  DynRegionInfo DynRelrRegion;
+  DynRegionInfo DynPLTRelRegion;
+  Optional<DynRegionInfo> DynSymRegion;
+  DynRegionInfo DynSymTabShndxRegion;
+  DynRegionInfo DynamicTable;
+  StringRef DynamicStringTable;
+  const Elf_Hash *HashTable = nullptr;
+  const Elf_GnuHash *GnuHashTable = nullptr;
+  const Elf_Shdr *DotSymtabSec = nullptr;
+  const Elf_Shdr *DotDynsymSec = nullptr;
+  const Elf_Shdr *DotCGProfileSec = nullptr;
+  const Elf_Shdr *DotAddrsigSec = nullptr;
+  DenseMap<const Elf_Shdr *, ArrayRef<Elf_Word>> ShndxTables;
+  Optional<uint64_t> SONameOffset;
+
+  const Elf_Shdr *SymbolVersionSection = nullptr;   // .gnu.version
+  const Elf_Shdr *SymbolVersionNeedSection = nullptr; // .gnu.version_r
+  const Elf_Shdr *SymbolVersionDefSection = nullptr; // .gnu.version_d
+
+  std::string getFullSymbolName(const Elf_Sym &Symbol, unsigned SymIndex,
+                                DataRegion<Elf_Word> ShndxTable,
+                                Optional<StringRef> StrTable,
+                                bool IsDynamic) const;
+  Expected<unsigned>
+  getSymbolSectionIndex(const Elf_Sym &Symbol, unsigned SymIndex,
+                        DataRegion<Elf_Word> ShndxTable) const;
+  Expected<StringRef> getSymbolSectionName(const Elf_Sym &Symbol,
+                                           unsigned SectionIndex) const;
+  std::string getStaticSymbolName(uint32_t Index) const;
+  StringRef getDynamicString(uint64_t Value) const;
+
+  void printSymbolsHelper(bool IsDynamic) const;
+  std::string getDynamicEntry(uint64_t Type, uint64_t Value) const;
+
+  Expected<RelSymbol<ELFT>> getRelocationTarget(const Relocation<ELFT> &R,
+                                                const Elf_Shdr *SymTab) const;
+
+  ArrayRef<Elf_Word> getShndxTable(const Elf_Shdr *Symtab) const;
+
+private:
+  mutable SmallVector<Optional<VersionEntry>, 0> VersionMap;
+};
+
+template <class ELFT>
+std::string ELFDumper<ELFT>::describe(const Elf_Shdr &Sec) const {
+  return ::describe(Obj, Sec);
+}
+
+namespace {
+
+template <class ELFT> struct SymtabLink {
+  typename ELFT::SymRange Symbols;
+  StringRef StringTable;
+  const typename ELFT::Shdr *SymTab;
+};
+
+// Returns the linked symbol table, symbols and associated string table for a
+// given section.
+template <class ELFT>
+Expected<SymtabLink<ELFT>> getLinkAsSymtab(const ELFFile<ELFT> &Obj,
+                                           const typename ELFT::Shdr &Sec,
+                                           unsigned ExpectedType) {
+  Expected<const typename ELFT::Shdr *> SymtabOrErr =
+      Obj.getSection(Sec.sh_link);
+  if (!SymtabOrErr)
+    return createError("invalid section linked to " + describe(Obj, Sec) +
+                       ": " + toString(SymtabOrErr.takeError()));
+
+  if ((*SymtabOrErr)->sh_type != ExpectedType)
+    return createError(
+        "invalid section linked to " + describe(Obj, Sec) + ": expected " +
+        object::getELFSectionTypeName(Obj.getHeader().e_machine, ExpectedType) +
+        ", but got " +
+        object::getELFSectionTypeName(Obj.getHeader().e_machine,
+                                      (*SymtabOrErr)->sh_type));
+
+  Expected<StringRef> StrTabOrErr = Obj.getLinkAsStrtab(**SymtabOrErr);
+  if (!StrTabOrErr)
+    return createError(
+        "can't get a string table for the symbol table linked to " +
+        describe(Obj, Sec) + ": " + toString(StrTabOrErr.takeError()));
+
+  Expected<typename ELFT::SymRange> SymsOrErr = Obj.symbols(*SymtabOrErr);
+  if (!SymsOrErr)
+    return createError("unable to read symbols from the " + describe(Obj, Sec) +
+                       ": " + toString(SymsOrErr.takeError()));
+
+  return SymtabLink<ELFT>{*SymsOrErr, *StrTabOrErr, *SymtabOrErr};
+}
+
+} // namespace
+
+template <class ELFT>
+Expected<ArrayRef<typename ELFT::Versym>>
+ELFDumper<ELFT>::getVersionTable(const Elf_Shdr &Sec, ArrayRef<Elf_Sym> *SymTab,
+                                 StringRef *StrTab,
+                                 const Elf_Shdr **SymTabSec) const {
+  assert((!SymTab && !StrTab && !SymTabSec) || (SymTab && StrTab && SymTabSec));
+  if (reinterpret_cast<uintptr_t>(Obj.base() + Sec.sh_offset) %
+          sizeof(uint16_t) !=
+      0)
+    return createError("the " + describe(Sec) + " is misaligned");
+
+  Expected<ArrayRef<Elf_Versym>> VersionsOrErr =
+      Obj.template getSectionContentsAsArray<Elf_Versym>(Sec);
+  if (!VersionsOrErr)
+    return createError("cannot read content of " + describe(Sec) + ": " +
+                       toString(VersionsOrErr.takeError()));
+
+  Expected<SymtabLink<ELFT>> SymTabOrErr =
+      getLinkAsSymtab(Obj, Sec, SHT_DYNSYM);
+  if (!SymTabOrErr) {
+    reportUniqueWarning(SymTabOrErr.takeError());
+    return *VersionsOrErr;
+  }
+
+  if (SymTabOrErr->Symbols.size() != VersionsOrErr->size())
+    reportUniqueWarning(describe(Sec) + ": the number of entries (" +
+                        Twine(VersionsOrErr->size()) +
+                        ") does not match the number of symbols (" +
+                        Twine(SymTabOrErr->Symbols.size()) +
+                        ") in the symbol table with index " +
+                        Twine(Sec.sh_link));
+
+  if (SymTab) {
+    *SymTab = SymTabOrErr->Symbols;
+    *StrTab = SymTabOrErr->StringTable;
+    *SymTabSec = SymTabOrErr->SymTab;
+  }
+  return *VersionsOrErr;
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const {
+  Optional<StringRef> StrTable;
+  size_t Entries = 0;
+  Elf_Sym_Range Syms(nullptr, nullptr);
+  const Elf_Shdr *SymtabSec = IsDynamic ? DotDynsymSec : DotSymtabSec;
+
+  if (IsDynamic) {
+    StrTable = DynamicStringTable;
+    Syms = dynamic_symbols();
+    Entries = Syms.size();
+  } else if (DotSymtabSec) {
+    if (Expected<StringRef> StrTableOrErr =
+            Obj.getStringTableForSymtab(*DotSymtabSec))
+      StrTable = *StrTableOrErr;
+    else
+      reportUniqueWarning(
+          "unable to get the string table for the SHT_SYMTAB section: " +
+          toString(StrTableOrErr.takeError()));
+
+    if (Expected<Elf_Sym_Range> SymsOrErr = Obj.symbols(DotSymtabSec))
+      Syms = *SymsOrErr;
+    else
+      reportUniqueWarning(
+          "unable to read symbols from the SHT_SYMTAB section: " +
+          toString(SymsOrErr.takeError()));
+    Entries = DotSymtabSec->getEntityCount();
+  }
+  if (Syms.empty())
+    return;
+
+  // The st_other field has 2 logical parts. The first two bits hold the symbol
+  // visibility (STV_*) and the remainder hold other platform-specific values.
+  bool NonVisibilityBitsUsed =
+      llvm::any_of(Syms, [](const Elf_Sym &S) { return S.st_other & ~0x3; });
+
+  DataRegion<Elf_Word> ShndxTable =
+      IsDynamic ? DataRegion<Elf_Word>(
+                      (const Elf_Word *)this->DynSymTabShndxRegion.Addr,
+                      this->getElfObject().getELFFile().end())
+                : DataRegion<Elf_Word>(this->getShndxTable(SymtabSec));
+
+  printSymtabMessage(SymtabSec, Entries, NonVisibilityBitsUsed);
+  for (const Elf_Sym &Sym : Syms)
+    printSymbol(Sym, &Sym - Syms.begin(), ShndxTable, StrTable, IsDynamic,
+                NonVisibilityBitsUsed);
+}
+
+template <typename ELFT> class GNUELFDumper : public ELFDumper<ELFT> {
+  formatted_raw_ostream &OS;
+
+public:
+  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
+
+  GNUELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer)
+      : ELFDumper<ELFT>(ObjF, Writer),
+        OS(static_cast<formatted_raw_ostream &>(Writer.getOStream())) {
+    assert(&this->W.getOStream() == &llvm::fouts());
+  }
+
+  void printFileHeaders() override;
+  void printGroupSections() override;
+  void printRelocations() override;
+  void printSectionHeaders() override;
+  void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override;
+  void printHashSymbols() override;
+  void printSectionDetails() override;
+  void printDependentLibs() override;
+  void printDynamicTable() override;
+  void printDynamicRelocations() override;
+  void printSymtabMessage(const Elf_Shdr *Symtab, size_t Offset,
+                          bool NonVisibilityBitsUsed) const override;
+  void printProgramHeaders(bool PrintProgramHeaders,
+                           cl::boolOrDefault PrintSectionMapping) override;
+  void printVersionSymbolSection(const Elf_Shdr *Sec) override;
+  void printVersionDefinitionSection(const Elf_Shdr *Sec) override;
+  void printVersionDependencySection(const Elf_Shdr *Sec) override;
+  void printHashHistograms() override;
+  void printCGProfile() override;
+  void printAddrsig() override;
+  void printNotes() override;
+  void printELFLinkerOptions() override;
+  void printStackSizes() override;
+
+private:
+  void printHashHistogram(const Elf_Hash &HashTable);
+  void printGnuHashHistogram(const Elf_GnuHash &GnuHashTable);
+  void printHashTableSymbols(const Elf_Hash &HashTable);
+  void printGnuHashTableSymbols(const Elf_GnuHash &GnuHashTable);
+
+  struct Field {
+    std::string Str;
+    unsigned Column;
+
+    Field(StringRef S, unsigned Col) : Str(std::string(S)), Column(Col) {}
+    Field(unsigned Col) : Column(Col) {}
+  };
+
+  template <typename T, typename TEnum>
+  std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) const {
+    for (const EnumEntry<TEnum> &EnumItem : EnumValues)
+      if (EnumItem.Value == Value)
+        return std::string(EnumItem.AltName);
+    return to_hexString(Value, false);
+  }
+
+  template <typename T, typename TEnum>
+  std::string printFlags(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues,
+                         TEnum EnumMask1 = {}, TEnum EnumMask2 = {},
+                         TEnum EnumMask3 = {}) const {
+    std::string Str;
+    for (const EnumEntry<TEnum> &Flag : EnumValues) {
+      if (Flag.Value == 0)
+        continue;
+
+      TEnum EnumMask{};
+      if (Flag.Value & EnumMask1)
+        EnumMask = EnumMask1;
+      else if (Flag.Value & EnumMask2)
+        EnumMask = EnumMask2;
+      else if (Flag.Value & EnumMask3)
+        EnumMask = EnumMask3;
+      bool IsEnum = (Flag.Value & EnumMask) != 0;
+      if ((!IsEnum && (Value & Flag.Value) == Flag.Value) ||
+          (IsEnum && (Value & EnumMask) == Flag.Value)) {
+        if (!Str.empty())
+          Str += ", ";
+        Str += Flag.AltName;
+      }
+    }
+    return Str;
+  }
+
+  formatted_raw_ostream &printField(struct Field F) const {
+    if (F.Column != 0)
+      OS.PadToColumn(F.Column);
+    OS << F.Str;
+    OS.flush();
+    return OS;
+  }
+  void printHashedSymbol(const Elf_Sym *Sym, unsigned SymIndex,
+                         DataRegion<Elf_Word> ShndxTable, StringRef StrTable,
+                         uint32_t Bucket);
+  void printRelrReloc(const Elf_Relr &R) override;
+  void printRelRelaReloc(const Relocation<ELFT> &R,
+                         const RelSymbol<ELFT> &RelSym) override;
+  void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
+                   DataRegion<Elf_Word> ShndxTable,
+                   Optional<StringRef> StrTable, bool IsDynamic,
+                   bool NonVisibilityBitsUsed) const override;
+  void printDynamicRelocHeader(unsigned Type, StringRef Name,
+                               const DynRegionInfo &Reg) override;
+
+  std::string getSymbolSectionNdx(const Elf_Sym &Symbol, unsigned SymIndex,
+                                  DataRegion<Elf_Word> ShndxTable) const;
+  void printProgramHeaders() override;
+  void printSectionMapping() override;
+  void printGNUVersionSectionProlog(const typename ELFT::Shdr &Sec,
+                                    const Twine &Label, unsigned EntriesNum);
+
+  void printStackSizeEntry(uint64_t Size, StringRef FuncName) override;
+
+  void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
+  void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
+  void printMipsABIFlags() override;
+};
+
+template <typename ELFT> class LLVMELFDumper : public ELFDumper<ELFT> {
+public:
+  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
+
+  LLVMELFDumper(const object::ELFObjectFile<ELFT> &ObjF, ScopedPrinter &Writer)
+      : ELFDumper<ELFT>(ObjF, Writer), W(Writer) {}
+
+  void printFileHeaders() override;
+  void printGroupSections() override;
+  void printRelocations() override;
+  void printSectionHeaders() override;
+  void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override;
+  void printDependentLibs() override;
+  void printDynamicTable() override;
+  void printDynamicRelocations() override;
+  void printProgramHeaders(bool PrintProgramHeaders,
+                           cl::boolOrDefault PrintSectionMapping) override;
+  void printVersionSymbolSection(const Elf_Shdr *Sec) override;
+  void printVersionDefinitionSection(const Elf_Shdr *Sec) override;
+  void printVersionDependencySection(const Elf_Shdr *Sec) override;
+  void printHashHistograms() override;
+  void printCGProfile() override;
+  void printAddrsig() override;
+  void printNotes() override;
+  void printELFLinkerOptions() override;
+  void printStackSizes() override;
+
+private:
+  void printRelrReloc(const Elf_Relr &R) override;
+  void printRelRelaReloc(const Relocation<ELFT> &R,
+                         const RelSymbol<ELFT> &RelSym) override;
+
+  void printSymbolSection(const Elf_Sym &Symbol, unsigned SymIndex,
+                          DataRegion<Elf_Word> ShndxTable) const;
+  void printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
+                   DataRegion<Elf_Word> ShndxTable,
+                   Optional<StringRef> StrTable, bool IsDynamic,
+                   bool /*NonVisibilityBitsUsed*/) const override;
+  void printProgramHeaders() override;
+  void printSectionMapping() override {}
+  void printStackSizeEntry(uint64_t Size, StringRef FuncName) override;
+
+  void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
+  void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
+  void printMipsABIFlags() override;
+
+  ScopedPrinter &W;
+};
+
+} // end anonymous namespace
+
+namespace llvm {
+
+template <class ELFT>
+static std::unique_ptr<ObjDumper>
+createELFDumper(const ELFObjectFile<ELFT> &Obj, ScopedPrinter &Writer) {
+  if (opts::Output == opts::GNU)
+    return std::make_unique<GNUELFDumper<ELFT>>(Obj, Writer);
+  return std::make_unique<LLVMELFDumper<ELFT>>(Obj, Writer);
+}
+
+std::unique_ptr<ObjDumper> createELFDumper(const object::ELFObjectFileBase &Obj,
+                                           ScopedPrinter &Writer) {
+  // Little-endian 32-bit
+  if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(&Obj))
+    return createELFDumper(*ELFObj, Writer);
+
+  // Big-endian 32-bit
+  if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(&Obj))
+    return createELFDumper(*ELFObj, Writer);
+
+  // Little-endian 64-bit
+  if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(&Obj))
+    return createELFDumper(*ELFObj, Writer);
+
+  // Big-endian 64-bit
+  return createELFDumper(*cast<ELF64BEObjectFile>(&Obj), Writer);
+}
+
+} // end namespace llvm
+
+template <class ELFT>
+Expected<SmallVector<Optional<VersionEntry>, 0> *>
+ELFDumper<ELFT>::getVersionMap() const {
+  // If the VersionMap has already been loaded or if there is no dynamic symtab
+  // or version table, there is nothing to do.
+  if (!VersionMap.empty() || !DynSymRegion || !SymbolVersionSection)
+    return &VersionMap;
+
+  Expected<SmallVector<Optional<VersionEntry>, 0>> MapOrErr =
+      Obj.loadVersionMap(SymbolVersionNeedSection, SymbolVersionDefSection);
+  if (MapOrErr)
+    VersionMap = *MapOrErr;
+  else
+    return MapOrErr.takeError();
+
+  return &VersionMap;
+}
+
+template <typename ELFT>
+Expected<StringRef> ELFDumper<ELFT>::getSymbolVersion(const Elf_Sym &Sym,
+                                                      bool &IsDefault) const {
+  // This is a dynamic symbol. Look in the GNU symbol version table.
+  if (!SymbolVersionSection) {
+    // No version table.
+    IsDefault = false;
+    return "";
+  }
+
+  assert(DynSymRegion && "DynSymRegion has not been initialised");
+  // Determine the position in the symbol table of this entry.
+  size_t EntryIndex = (reinterpret_cast<uintptr_t>(&Sym) -
+                       reinterpret_cast<uintptr_t>(DynSymRegion->Addr)) /
+                      sizeof(Elf_Sym);
+
+  // Get the corresponding version index entry.
+  Expected<const Elf_Versym *> EntryOrErr =
+      Obj.template getEntry<Elf_Versym>(*SymbolVersionSection, EntryIndex);
+  if (!EntryOrErr)
+    return EntryOrErr.takeError();
+
+  unsigned Version = (*EntryOrErr)->vs_index;
+  if (Version == VER_NDX_LOCAL || Version == VER_NDX_GLOBAL) {
+    IsDefault = false;
+    return "";
+  }
+
+  Expected<SmallVector<Optional<VersionEntry>, 0> *> MapOrErr =
+      getVersionMap();
+  if (!MapOrErr)
+    return MapOrErr.takeError();
+
+  return Obj.getSymbolVersionByIndex(Version, IsDefault, **MapOrErr,
+                                     Sym.st_shndx == ELF::SHN_UNDEF);
+}
+
+template <typename ELFT>
+Expected<RelSymbol<ELFT>>
+ELFDumper<ELFT>::getRelocationTarget(const Relocation<ELFT> &R,
+                                     const Elf_Shdr *SymTab) const {
+  if (R.Symbol == 0)
+    return RelSymbol<ELFT>(nullptr, "");
+
+  Expected<const Elf_Sym *> SymOrErr =
+      Obj.template getEntry<Elf_Sym>(*SymTab, R.Symbol);
+  if (!SymOrErr)
+    return createError("unable to read an entry with index " + Twine(R.Symbol) +
+                       " from " + describe(*SymTab) + ": " +
+                       toString(SymOrErr.takeError()));
+  const Elf_Sym *Sym = *SymOrErr;
+  if (!Sym)
+    return RelSymbol<ELFT>(nullptr, "");
+
+  Expected<StringRef> StrTableOrErr = Obj.getStringTableForSymtab(*SymTab);
+  if (!StrTableOrErr)
+    return StrTableOrErr.takeError();
+
+  const Elf_Sym *FirstSym =
+      cantFail(Obj.template getEntry<Elf_Sym>(*SymTab, 0));
+  std::string SymbolName =
+      getFullSymbolName(*Sym, Sym - FirstSym, getShndxTable(SymTab),
+                        *StrTableOrErr, SymTab->sh_type == SHT_DYNSYM);
+  return RelSymbol<ELFT>(Sym, SymbolName);
+}
+
+template <typename ELFT>
+ArrayRef<typename ELFT::Word>
+ELFDumper<ELFT>::getShndxTable(const Elf_Shdr *Symtab) const {
+  if (Symtab) {
+    auto It = ShndxTables.find(Symtab);
+    if (It != ShndxTables.end())
+      return It->second;
+  }
+  return {};
+}
+
+static std::string maybeDemangle(StringRef Name) {
+  return opts::Demangle ? demangle(std::string(Name)) : Name.str();
+}
+
+template <typename ELFT>
+std::string ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const {
+  auto Warn = [&](Error E) -> std::string {
+    reportUniqueWarning("unable to read the name of symbol with index " +
+                        Twine(Index) + ": " + toString(std::move(E)));
+    return "<?>";
+  };
+
+  Expected<const typename ELFT::Sym *> SymOrErr =
+      Obj.getSymbol(DotSymtabSec, Index);
+  if (!SymOrErr)
+    return Warn(SymOrErr.takeError());
+
+  Expected<StringRef> StrTabOrErr = Obj.getStringTableForSymtab(*DotSymtabSec);
+  if (!StrTabOrErr)
+    return Warn(StrTabOrErr.takeError());
+
+  Expected<StringRef> NameOrErr = (*SymOrErr)->getName(*StrTabOrErr);
+  if (!NameOrErr)
+    return Warn(NameOrErr.takeError());
+  return maybeDemangle(*NameOrErr);
+}
+
+template <typename ELFT>
+std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym &Symbol,
+                                               unsigned SymIndex,
+                                               DataRegion<Elf_Word> ShndxTable,
+                                               Optional<StringRef> StrTable,
+                                               bool IsDynamic) const {
+  if (!StrTable)
+    return "<?>";
+
+  std::string SymbolName;
+  if (Expected<StringRef> NameOrErr = Symbol.getName(*StrTable)) {
+    SymbolName = maybeDemangle(*NameOrErr);
+  } else {
+    reportUniqueWarning(NameOrErr.takeError());
+    return "<?>";
+  }
+
+  if (SymbolName.empty() && Symbol.getType() == ELF::STT_SECTION) {
+    Expected<unsigned> SectionIndex =
+        getSymbolSectionIndex(Symbol, SymIndex, ShndxTable);
+    if (!SectionIndex) {
+      reportUniqueWarning(SectionIndex.takeError());
+      return "<?>";
+    }
+    Expected<StringRef> NameOrErr = getSymbolSectionName(Symbol, *SectionIndex);
+    if (!NameOrErr) {
+      reportUniqueWarning(NameOrErr.takeError());
+      return ("<section " + Twine(*SectionIndex) + ">").str();
+    }
+    return std::string(*NameOrErr);
+  }
+
+  if (!IsDynamic)
+    return SymbolName;
+
+  bool IsDefault;
+  Expected<StringRef> VersionOrErr = getSymbolVersion(Symbol, IsDefault);
+  if (!VersionOrErr) {
+    reportUniqueWarning(VersionOrErr.takeError());
+    return SymbolName + "@<corrupt>";
+  }
+
+  if (!VersionOrErr->empty()) {
+    SymbolName += (IsDefault ? "@@" : "@");
+    SymbolName += *VersionOrErr;
+  }
+  return SymbolName;
+}
+
+template <typename ELFT>
+Expected<unsigned>
+ELFDumper<ELFT>::getSymbolSectionIndex(const Elf_Sym &Symbol, unsigned SymIndex,
+                                       DataRegion<Elf_Word> ShndxTable) const {
+  unsigned Ndx = Symbol.st_shndx;
+  if (Ndx == SHN_XINDEX)
+    return object::getExtendedSymbolTableIndex<ELFT>(Symbol, SymIndex,
+                                                     ShndxTable);
+  if (Ndx != SHN_UNDEF && Ndx < SHN_LORESERVE)
+    return Ndx;
+
+  auto CreateErr = [&](const Twine &Name, Optional<unsigned> Offset = None) {
+    std::string Desc;
+    if (Offset)
+      Desc = (Name + "+0x" + Twine::utohexstr(*Offset)).str();
+    else
+      Desc = Name.str();
+    return createError(
+        "unable to get section index for symbol with st_shndx = 0x" +
+        Twine::utohexstr(Ndx) + " (" + Desc + ")");
+  };
+
+  if (Ndx >= ELF::SHN_LOPROC && Ndx <= ELF::SHN_HIPROC)
+    return CreateErr("SHN_LOPROC", Ndx - ELF::SHN_LOPROC);
+  if (Ndx >= ELF::SHN_LOOS && Ndx <= ELF::SHN_HIOS)
+    return CreateErr("SHN_LOOS", Ndx - ELF::SHN_LOOS);
+  if (Ndx == ELF::SHN_UNDEF)
+    return CreateErr("SHN_UNDEF");
+  if (Ndx == ELF::SHN_ABS)
+    return CreateErr("SHN_ABS");
+  if (Ndx == ELF::SHN_COMMON)
+    return CreateErr("SHN_COMMON");
+  return CreateErr("SHN_LORESERVE", Ndx - SHN_LORESERVE);
+}
+
+template <typename ELFT>
+Expected<StringRef>
+ELFDumper<ELFT>::getSymbolSectionName(const Elf_Sym &Symbol,
+                                      unsigned SectionIndex) const {
+  Expected<const Elf_Shdr *> SecOrErr = Obj.getSection(SectionIndex);
+  if (!SecOrErr)
+    return SecOrErr.takeError();
+  return Obj.getSectionName(**SecOrErr);
+}
+
+template <class ELFO>
+static const typename ELFO::Elf_Shdr *
+findNotEmptySectionByAddress(const ELFO &Obj, StringRef FileName,
+                             uint64_t Addr) {
+  for (const typename ELFO::Elf_Shdr &Shdr : cantFail(Obj.sections()))
+    if (Shdr.sh_addr == Addr && Shdr.sh_size > 0)
+      return &Shdr;
+  return nullptr;
+}
+
+static const EnumEntry<unsigned> ElfClass[] = {
+  {"None",   "none",   ELF::ELFCLASSNONE},
+  {"32-bit", "ELF32",  ELF::ELFCLASS32},
+  {"64-bit", "ELF64",  ELF::ELFCLASS64},
+};
+
+static const EnumEntry<unsigned> ElfDataEncoding[] = {
+  {"None",         "none",                          ELF::ELFDATANONE},
+  {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB},
+  {"BigEndian",    "2's complement, big endian",    ELF::ELFDATA2MSB},
+};
+
+static const EnumEntry<unsigned> ElfObjectFileType[] = {
+  {"None",         "NONE (none)",              ELF::ET_NONE},
+  {"Relocatable",  "REL (Relocatable file)",   ELF::ET_REL},
+  {"Executable",   "EXEC (Executable file)",   ELF::ET_EXEC},
+  {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN},
+  {"Core",         "CORE (Core file)",         ELF::ET_CORE},
+};
+
+static const EnumEntry<unsigned> ElfOSABI[] = {
+  {"SystemV",      "UNIX - System V",      ELF::ELFOSABI_NONE},
+  {"HPUX",         "UNIX - HP-UX",         ELF::ELFOSABI_HPUX},
+  {"NetBSD",       "UNIX - NetBSD",        ELF::ELFOSABI_NETBSD},
+  {"GNU/Linux",    "UNIX - GNU",           ELF::ELFOSABI_LINUX},
+  {"GNU/Hurd",     "GNU/Hurd",             ELF::ELFOSABI_HURD},
+  {"Solaris",      "UNIX - Solaris",       ELF::ELFOSABI_SOLARIS},
+  {"AIX",          "UNIX - AIX",           ELF::ELFOSABI_AIX},
+  {"IRIX",         "UNIX - IRIX",          ELF::ELFOSABI_IRIX},
+  {"FreeBSD",      "UNIX - FreeBSD",       ELF::ELFOSABI_FREEBSD},
+  {"TRU64",        "UNIX - TRU64",         ELF::ELFOSABI_TRU64},
+  {"Modesto",      "Novell - Modesto",     ELF::ELFOSABI_MODESTO},
+  {"OpenBSD",      "UNIX - OpenBSD",       ELF::ELFOSABI_OPENBSD},
+  {"OpenVMS",      "VMS - OpenVMS",        ELF::ELFOSABI_OPENVMS},
+  {"NSK",          "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK},
+  {"AROS",         "AROS",                 ELF::ELFOSABI_AROS},
+  {"FenixOS",      "FenixOS",              ELF::ELFOSABI_FENIXOS},
+  {"CloudABI",     "CloudABI",             ELF::ELFOSABI_CLOUDABI},
+  {"Standalone",   "Standalone App",       ELF::ELFOSABI_STANDALONE}
+};
+
+static const EnumEntry<unsigned> AMDGPUElfOSABI[] = {
+  {"AMDGPU_HSA",    "AMDGPU - HSA",    ELF::ELFOSABI_AMDGPU_HSA},
+  {"AMDGPU_PAL",    "AMDGPU - PAL",    ELF::ELFOSABI_AMDGPU_PAL},
+  {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D}
+};
+
+static const EnumEntry<unsigned> ARMElfOSABI[] = {
+  {"ARM", "ARM", ELF::ELFOSABI_ARM}
+};
+
+static const EnumEntry<unsigned> C6000ElfOSABI[] = {
+  {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI},
+  {"C6000_LINUX",  "Linux C6000",      ELF::ELFOSABI_C6000_LINUX}
+};
+
+static const EnumEntry<unsigned> ElfMachineType[] = {
+  ENUM_ENT(EM_NONE,          "None"),
+  ENUM_ENT(EM_M32,           "WE32100"),
+  ENUM_ENT(EM_SPARC,         "Sparc"),
+  ENUM_ENT(EM_386,           "Intel 80386"),
+  ENUM_ENT(EM_68K,           "MC68000"),
+  ENUM_ENT(EM_88K,           "MC88000"),
+  ENUM_ENT(EM_IAMCU,         "EM_IAMCU"),
+  ENUM_ENT(EM_860,           "Intel 80860"),
+  ENUM_ENT(EM_MIPS,          "MIPS R3000"),
+  ENUM_ENT(EM_S370,          "IBM System/370"),
+  ENUM_ENT(EM_MIPS_RS3_LE,   "MIPS R3000 little-endian"),
+  ENUM_ENT(EM_PARISC,        "HPPA"),
+  ENUM_ENT(EM_VPP500,        "Fujitsu VPP500"),
+  ENUM_ENT(EM_SPARC32PLUS,   "Sparc v8+"),
+  ENUM_ENT(EM_960,           "Intel 80960"),
+  ENUM_ENT(EM_PPC,           "PowerPC"),
+  ENUM_ENT(EM_PPC64,         "PowerPC64"),
+  ENUM_ENT(EM_S390,          "IBM S/390"),
+  ENUM_ENT(EM_SPU,           "SPU"),
+  ENUM_ENT(EM_V800,          "NEC V800 series"),
+  ENUM_ENT(EM_FR20,          "Fujistsu FR20"),
+  ENUM_ENT(EM_RH32,          "TRW RH-32"),
+  ENUM_ENT(EM_RCE,           "Motorola RCE"),
+  ENUM_ENT(EM_ARM,           "ARM"),
+  ENUM_ENT(EM_ALPHA,         "EM_ALPHA"),
+  ENUM_ENT(EM_SH,            "Hitachi SH"),
+  ENUM_ENT(EM_SPARCV9,       "Sparc v9"),
+  ENUM_ENT(EM_TRICORE,       "Siemens Tricore"),
+  ENUM_ENT(EM_ARC,           "ARC"),
+  ENUM_ENT(EM_H8_300,        "Hitachi H8/300"),
+  ENUM_ENT(EM_H8_300H,       "Hitachi H8/300H"),
+  ENUM_ENT(EM_H8S,           "Hitachi H8S"),
+  ENUM_ENT(EM_H8_500,        "Hitachi H8/500"),
+  ENUM_ENT(EM_IA_64,         "Intel IA-64"),
+  ENUM_ENT(EM_MIPS_X,        "Stanford MIPS-X"),
+  ENUM_ENT(EM_COLDFIRE,      "Motorola Coldfire"),
+  ENUM_ENT(EM_68HC12,        "Motorola MC68HC12 Microcontroller"),
+  ENUM_ENT(EM_MMA,           "Fujitsu Multimedia Accelerator"),
+  ENUM_ENT(EM_PCP,           "Siemens PCP"),
+  ENUM_ENT(EM_NCPU,          "Sony nCPU embedded RISC processor"),
+  ENUM_ENT(EM_NDR1,          "Denso NDR1 microprocesspr"),
+  ENUM_ENT(EM_STARCORE,      "Motorola Star*Core processor"),
+  ENUM_ENT(EM_ME16,          "Toyota ME16 processor"),
+  ENUM_ENT(EM_ST100,         "STMicroelectronics ST100 processor"),
+  ENUM_ENT(EM_TINYJ,         "Advanced Logic Corp. TinyJ embedded processor"),
+  ENUM_ENT(EM_X86_64,        "Advanced Micro Devices X86-64"),
+  ENUM_ENT(EM_PDSP,          "Sony DSP processor"),
+  ENUM_ENT(EM_PDP10,         "Digital Equipment Corp. PDP-10"),
+  ENUM_ENT(EM_PDP11,         "Digital Equipment Corp. PDP-11"),
+  ENUM_ENT(EM_FX66,          "Siemens FX66 microcontroller"),
+  ENUM_ENT(EM_ST9PLUS,       "STMicroelectronics ST9+ 8/16 bit microcontroller"),
+  ENUM_ENT(EM_ST7,           "STMicroelectronics ST7 8-bit microcontroller"),
+  ENUM_ENT(EM_68HC16,        "Motorola MC68HC16 Microcontroller"),
+  ENUM_ENT(EM_68HC11,        "Motorola MC68HC11 Microcontroller"),
+  ENUM_ENT(EM_68HC08,        "Motorola MC68HC08 Microcontroller"),
+  ENUM_ENT(EM_68HC05,        "Motorola MC68HC05 Microcontroller"),
+  ENUM_ENT(EM_SVX,           "Silicon Graphics SVx"),
+  ENUM_ENT(EM_ST19,          "STMicroelectronics ST19 8-bit microcontroller"),
+  ENUM_ENT(EM_VAX,           "Digital VAX"),
+  ENUM_ENT(EM_CRIS,          "Axis Communications 32-bit embedded processor"),
+  ENUM_ENT(EM_JAVELIN,       "Infineon Technologies 32-bit embedded cpu"),
+  ENUM_ENT(EM_FIREPATH,      "Element 14 64-bit DSP processor"),
+  ENUM_ENT(EM_ZSP,           "LSI Logic's 16-bit DSP processor"),
+  ENUM_ENT(EM_MMIX,          "Donald Knuth's educational 64-bit processor"),
+  ENUM_ENT(EM_HUANY,         "Harvard Universitys's machine-independent object format"),
+  ENUM_ENT(EM_PRISM,         "Vitesse Prism"),
+  ENUM_ENT(EM_AVR,           "Atmel AVR 8-bit microcontroller"),
+  ENUM_ENT(EM_FR30,          "Fujitsu FR30"),
+  ENUM_ENT(EM_D10V,          "Mitsubishi D10V"),
+  ENUM_ENT(EM_D30V,          "Mitsubishi D30V"),
+  ENUM_ENT(EM_V850,          "NEC v850"),
+  ENUM_ENT(EM_M32R,          "Renesas M32R (formerly Mitsubishi M32r)"),
+  ENUM_ENT(EM_MN10300,       "Matsushita MN10300"),
+  ENUM_ENT(EM_MN10200,       "Matsushita MN10200"),
+  ENUM_ENT(EM_PJ,            "picoJava"),
+  ENUM_ENT(EM_OPENRISC,      "OpenRISC 32-bit embedded processor"),
+  ENUM_ENT(EM_ARC_COMPACT,   "EM_ARC_COMPACT"),
+  ENUM_ENT(EM_XTENSA,        "Tensilica Xtensa Processor"),
+  ENUM_ENT(EM_VIDEOCORE,     "Alphamosaic VideoCore processor"),
+  ENUM_ENT(EM_TMM_GPP,       "Thompson Multimedia General Purpose Processor"),
+  ENUM_ENT(EM_NS32K,         "National Semiconductor 32000 series"),
+  ENUM_ENT(EM_TPC,           "Tenor Network TPC processor"),
+  ENUM_ENT(EM_SNP1K,         "EM_SNP1K"),
+  ENUM_ENT(EM_ST200,         "STMicroelectronics ST200 microcontroller"),
+  ENUM_ENT(EM_IP2K,          "Ubicom IP2xxx 8-bit microcontrollers"),
+  ENUM_ENT(EM_MAX,           "MAX Processor"),
+  ENUM_ENT(EM_CR,            "National Semiconductor CompactRISC"),
+  ENUM_ENT(EM_F2MC16,        "Fujitsu F2MC16"),
+  ENUM_ENT(EM_MSP430,        "Texas Instruments msp430 microcontroller"),
+  ENUM_ENT(EM_BLACKFIN,      "Analog Devices Blackfin"),
+  ENUM_ENT(EM_SE_C33,        "S1C33 Family of Seiko Epson processors"),
+  ENUM_ENT(EM_SEP,           "Sharp embedded microprocessor"),
+  ENUM_ENT(EM_ARCA,          "Arca RISC microprocessor"),
+  ENUM_ENT(EM_UNICORE,       "Unicore"),
+  ENUM_ENT(EM_EXCESS,        "eXcess 16/32/64-bit configurable embedded CPU"),
+  ENUM_ENT(EM_DXP,           "Icera Semiconductor Inc. Deep Execution Processor"),
+  ENUM_ENT(EM_ALTERA_NIOS2,  "Altera Nios"),
+  ENUM_ENT(EM_CRX,           "National Semiconductor CRX microprocessor"),
+  ENUM_ENT(EM_XGATE,         "Motorola XGATE embedded processor"),
+  ENUM_ENT(EM_C166,          "Infineon Technologies xc16x"),
+  ENUM_ENT(EM_M16C,          "Renesas M16C"),
+  ENUM_ENT(EM_DSPIC30F,      "Microchip Technology dsPIC30F Digital Signal Controller"),
+  ENUM_ENT(EM_CE,            "Freescale Communication Engine RISC core"),
+  ENUM_ENT(EM_M32C,          "Renesas M32C"),
+  ENUM_ENT(EM_TSK3000,       "Altium TSK3000 core"),
+  ENUM_ENT(EM_RS08,          "Freescale RS08 embedded processor"),
+  ENUM_ENT(EM_SHARC,         "EM_SHARC"),
+  ENUM_ENT(EM_ECOG2,         "Cyan Technology eCOG2 microprocessor"),
+  ENUM_ENT(EM_SCORE7,        "SUNPLUS S+Core"),
+  ENUM_ENT(EM_DSP24,         "New Japan Radio (NJR) 24-bit DSP Processor"),
+  ENUM_ENT(EM_VIDEOCORE3,    "Broadcom VideoCore III processor"),
+  ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"),
+  ENUM_ENT(EM_SE_C17,        "Seiko Epson C17 family"),
+  ENUM_ENT(EM_TI_C6000,      "Texas Instruments TMS320C6000 DSP family"),
+  ENUM_ENT(EM_TI_C2000,      "Texas Instruments TMS320C2000 DSP family"),
+  ENUM_ENT(EM_TI_C5500,      "Texas Instruments TMS320C55x DSP family"),
+  ENUM_ENT(EM_MMDSP_PLUS,    "STMicroelectronics 64bit VLIW Data Signal Processor"),
+  ENUM_ENT(EM_CYPRESS_M8C,   "Cypress M8C microprocessor"),
+  ENUM_ENT(EM_R32C,          "Renesas R32C series microprocessors"),
+  ENUM_ENT(EM_TRIMEDIA,      "NXP Semiconductors TriMedia architecture family"),
+  ENUM_ENT(EM_HEXAGON,       "Qualcomm Hexagon"),
+  ENUM_ENT(EM_8051,          "Intel 8051 and variants"),
+  ENUM_ENT(EM_STXP7X,        "STMicroelectronics STxP7x family"),
+  ENUM_ENT(EM_NDS32,         "Andes Technology compact code size embedded RISC processor family"),
+  ENUM_ENT(EM_ECOG1,         "Cyan Technology eCOG1 microprocessor"),
+  // FIXME: Following EM_ECOG1X definitions is dead code since EM_ECOG1X has
+  //        an identical number to EM_ECOG1.
+  ENUM_ENT(EM_ECOG1X,        "Cyan Technology eCOG1X family"),
+  ENUM_ENT(EM_MAXQ30,        "Dallas Semiconductor MAXQ30 Core microcontrollers"),
+  ENUM_ENT(EM_XIMO16,        "New Japan Radio (NJR) 16-bit DSP Processor"),
+  ENUM_ENT(EM_MANIK,         "M2000 Reconfigurable RISC Microprocessor"),
+  ENUM_ENT(EM_CRAYNV2,       "Cray Inc. NV2 vector architecture"),
+  ENUM_ENT(EM_RX,            "Renesas RX"),
+  ENUM_ENT(EM_METAG,         "Imagination Technologies Meta processor architecture"),
+  ENUM_ENT(EM_MCST_ELBRUS,   "MCST Elbrus general purpose hardware architecture"),
+  ENUM_ENT(EM_ECOG16,        "Cyan Technology eCOG16 family"),
+  ENUM_ENT(EM_CR16,          "Xilinx MicroBlaze"),
+  ENUM_ENT(EM_ETPU,          "Freescale Extended Time Processing Unit"),
+  ENUM_ENT(EM_SLE9X,         "Infineon Technologies SLE9X core"),
+  ENUM_ENT(EM_L10M,          "EM_L10M"),
+  ENUM_ENT(EM_K10M,          "EM_K10M"),
+  ENUM_ENT(EM_AARCH64,       "AArch64"),
+  ENUM_ENT(EM_AVR32,         "Atmel Corporation 32-bit microprocessor family"),
+  ENUM_ENT(EM_STM8,          "STMicroeletronics STM8 8-bit microcontroller"),
+  ENUM_ENT(EM_TILE64,        "Tilera TILE64 multicore architecture family"),
+  ENUM_ENT(EM_TILEPRO,       "Tilera TILEPro multicore architecture family"),
+  ENUM_ENT(EM_CUDA,          "NVIDIA CUDA architecture"),
+  ENUM_ENT(EM_TILEGX,        "Tilera TILE-Gx multicore architecture family"),
+  ENUM_ENT(EM_CLOUDSHIELD,   "EM_CLOUDSHIELD"),
+  ENUM_ENT(EM_COREA_1ST,     "EM_COREA_1ST"),
+  ENUM_ENT(EM_COREA_2ND,     "EM_COREA_2ND"),
+  ENUM_ENT(EM_ARC_COMPACT2,  "EM_ARC_COMPACT2"),
+  ENUM_ENT(EM_OPEN8,         "EM_OPEN8"),
+  ENUM_ENT(EM_RL78,          "Renesas RL78"),
+  ENUM_ENT(EM_VIDEOCORE5,    "Broadcom VideoCore V processor"),
+  ENUM_ENT(EM_78KOR,         "EM_78KOR"),
+  ENUM_ENT(EM_56800EX,       "EM_56800EX"),
+  ENUM_ENT(EM_AMDGPU,        "EM_AMDGPU"),
+  ENUM_ENT(EM_RISCV,         "RISC-V"),
+  ENUM_ENT(EM_LANAI,         "EM_LANAI"),
+  ENUM_ENT(EM_BPF,           "EM_BPF"),
+  ENUM_ENT(EM_VE,            "NEC SX-Aurora Vector Engine"),
+};
+
+static const EnumEntry<unsigned> ElfSymbolBindings[] = {
+    {"Local",  "LOCAL",  ELF::STB_LOCAL},
+    {"Global", "GLOBAL", ELF::STB_GLOBAL},
+    {"Weak",   "WEAK",   ELF::STB_WEAK},
+    {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}};
+
+static const EnumEntry<unsigned> ElfSymbolVisibilities[] = {
+    {"DEFAULT",   "DEFAULT",   ELF::STV_DEFAULT},
+    {"INTERNAL",  "INTERNAL",  ELF::STV_INTERNAL},
+    {"HIDDEN",    "HIDDEN",    ELF::STV_HIDDEN},
+    {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}};
+
+static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = {
+  { "AMDGPU_HSA_KERNEL",            ELF::STT_AMDGPU_HSA_KERNEL }
+};
+
+static const char *getGroupType(uint32_t Flag) {
+  if (Flag & ELF::GRP_COMDAT)
+    return "COMDAT";
+  else
+    return "(unknown)";
+}
+
+static const EnumEntry<unsigned> ElfSectionFlags[] = {
+  ENUM_ENT(SHF_WRITE,            "W"),
+  ENUM_ENT(SHF_ALLOC,            "A"),
+  ENUM_ENT(SHF_EXECINSTR,        "X"),
+  ENUM_ENT(SHF_MERGE,            "M"),
+  ENUM_ENT(SHF_STRINGS,          "S"),
+  ENUM_ENT(SHF_INFO_LINK,        "I"),
+  ENUM_ENT(SHF_LINK_ORDER,       "L"),
+  ENUM_ENT(SHF_OS_NONCONFORMING, "O"),
+  ENUM_ENT(SHF_GROUP,            "G"),
+  ENUM_ENT(SHF_TLS,              "T"),
+  ENUM_ENT(SHF_COMPRESSED,       "C"),
+  ENUM_ENT(SHF_EXCLUDE,          "E"),
+};
+
+static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = {
+  ENUM_ENT(XCORE_SHF_CP_SECTION, ""),
+  ENUM_ENT(XCORE_SHF_DP_SECTION, "")
+};
+
+static const EnumEntry<unsigned> ElfARMSectionFlags[] = {
+  ENUM_ENT(SHF_ARM_PURECODE, "y")
+};
+
+static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = {
+  ENUM_ENT(SHF_HEX_GPREL, "")
+};
+
+static const EnumEntry<unsigned> ElfMipsSectionFlags[] = {
+  ENUM_ENT(SHF_MIPS_NODUPES, ""),
+  ENUM_ENT(SHF_MIPS_NAMES,   ""),
+  ENUM_ENT(SHF_MIPS_LOCAL,   ""),
+  ENUM_ENT(SHF_MIPS_NOSTRIP, ""),
+  ENUM_ENT(SHF_MIPS_GPREL,   ""),
+  ENUM_ENT(SHF_MIPS_MERGE,   ""),
+  ENUM_ENT(SHF_MIPS_ADDR,    ""),
+  ENUM_ENT(SHF_MIPS_STRING,  "")
+};
+
+static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = {
+  ENUM_ENT(SHF_X86_64_LARGE, "l")
+};
+
+static std::vector<EnumEntry<unsigned>>
+getSectionFlagsForTarget(unsigned EMachine) {
+  std::vector<EnumEntry<unsigned>> Ret(std::begin(ElfSectionFlags),
+                                       std::end(ElfSectionFlags));
+  switch (EMachine) {
+  case EM_ARM:
+    Ret.insert(Ret.end(), std::begin(ElfARMSectionFlags),
+               std::end(ElfARMSectionFlags));
+    break;
+  case EM_HEXAGON:
+    Ret.insert(Ret.end(), std::begin(ElfHexagonSectionFlags),
+               std::end(ElfHexagonSectionFlags));
+    break;
+  case EM_MIPS:
+    Ret.insert(Ret.end(), std::begin(ElfMipsSectionFlags),
+               std::end(ElfMipsSectionFlags));
+    break;
+  case EM_X86_64:
+    Ret.insert(Ret.end(), std::begin(ElfX86_64SectionFlags),
+               std::end(ElfX86_64SectionFlags));
+    break;
+  case EM_XCORE:
+    Ret.insert(Ret.end(), std::begin(ElfXCoreSectionFlags),
+               std::end(ElfXCoreSectionFlags));
+    break;
+  default:
+    break;
+  }
+  return Ret;
+}
+
+static std::string getGNUFlags(unsigned EMachine, uint64_t Flags) {
+  // Here we are trying to build the flags string in the same way as GNU does.
+  // It is not that straightforward. Imagine we have sh_flags == 0x90000000.
+  // SHF_EXCLUDE ("E") has a value of 0x80000000 and SHF_MASKPROC is 0xf0000000.
+  // GNU readelf will not print "E" or "Ep" in this case, but will print just
+  // "p". It only will print "E" when no other processor flag is set.
+  std::string Str;
+  bool HasUnknownFlag = false;
+  bool HasOSFlag = false;
+  bool HasProcFlag = false;
+  std::vector<EnumEntry<unsigned>> FlagsList =
+      getSectionFlagsForTarget(EMachine);
+  while (Flags) {
+    // Take the least significant bit as a flag.
+    uint64_t Flag = Flags & -Flags;
+    Flags -= Flag;
+
+    // Find the flag in the known flags list.
+    auto I = llvm::find_if(FlagsList, [=](const EnumEntry<unsigned> &E) {
+      // Flags with empty names are not printed in GNU style output.
+      return E.Value == Flag && !E.AltName.empty();
+    });
+    if (I != FlagsList.end()) {
+      Str += I->AltName;
+      continue;
+    }
+
+    // If we did not find a matching regular flag, then we deal with an OS
+    // specific flag, processor specific flag or an unknown flag.
+    if (Flag & ELF::SHF_MASKOS) {
+      HasOSFlag = true;
+      Flags &= ~ELF::SHF_MASKOS;
+    } else if (Flag & ELF::SHF_MASKPROC) {
+      HasProcFlag = true;
+      // Mask off all the processor-specific bits. This removes the SHF_EXCLUDE
+      // bit if set so that it doesn't also get printed.
+      Flags &= ~ELF::SHF_MASKPROC;
+    } else {
+      HasUnknownFlag = true;
+    }
+  }
+
+  // "o", "p" and "x" are printed last.
+  if (HasOSFlag)
+    Str += "o";
+  if (HasProcFlag)
+    Str += "p";
+  if (HasUnknownFlag)
+    Str += "x";
+  return Str;
+}
+
+static StringRef segmentTypeToString(unsigned Arch, unsigned Type) {
+  // Check potentially overlapped processor-specific program header type.
+  switch (Arch) {
+  case ELF::EM_ARM:
+    switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); }
+    break;
+  case ELF::EM_MIPS:
+  case ELF::EM_MIPS_RS3_LE:
+    switch (Type) {
+      LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO);
+      LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC);
+      LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS);
+      LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS);
+    }
+    break;
+  }
+
+  switch (Type) {
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS);
+
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND);
+
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_PROPERTY);
+
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED);
+    LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA);
+  default:
+    return "";
+  }
+}
+
+static std::string getGNUPtType(unsigned Arch, unsigned Type) {
+  StringRef Seg = segmentTypeToString(Arch, Type);
+  if (Seg.empty())
+    return std::string("<unknown>: ") + to_string(format_hex(Type, 1));
+
+  // E.g. "PT_ARM_EXIDX" -> "EXIDX".
+  if (Seg.startswith("PT_ARM_"))
+    return Seg.drop_front(7).str();
+
+  // E.g. "PT_MIPS_REGINFO" -> "REGINFO".
+  if (Seg.startswith("PT_MIPS_"))
+    return Seg.drop_front(8).str();
+
+  // E.g. "PT_LOAD" -> "LOAD".
+  assert(Seg.startswith("PT_"));
+  return Seg.drop_front(3).str();
+}
+
+static const EnumEntry<unsigned> ElfSegmentFlags[] = {
+  LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
+  LLVM_READOBJ_ENUM_ENT(ELF, PF_W),
+  LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
+};
+
+static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = {
+  ENUM_ENT(EF_MIPS_NOREORDER, "noreorder"),
+  ENUM_ENT(EF_MIPS_PIC, "pic"),
+  ENUM_ENT(EF_MIPS_CPIC, "cpic"),
+  ENUM_ENT(EF_MIPS_ABI2, "abi2"),
+  ENUM_ENT(EF_MIPS_32BITMODE, "32bitmode"),
+  ENUM_ENT(EF_MIPS_FP64, "fp64"),
+  ENUM_ENT(EF_MIPS_NAN2008, "nan2008"),
+  ENUM_ENT(EF_MIPS_ABI_O32, "o32"),
+  ENUM_ENT(EF_MIPS_ABI_O64, "o64"),
+  ENUM_ENT(EF_MIPS_ABI_EABI32, "eabi32"),
+  ENUM_ENT(EF_MIPS_ABI_EABI64, "eabi64"),
+  ENUM_ENT(EF_MIPS_MACH_3900, "3900"),
+  ENUM_ENT(EF_MIPS_MACH_4010, "4010"),
+  ENUM_ENT(EF_MIPS_MACH_4100, "4100"),
+  ENUM_ENT(EF_MIPS_MACH_4650, "4650"),
+  ENUM_ENT(EF_MIPS_MACH_4120, "4120"),
+  ENUM_ENT(EF_MIPS_MACH_4111, "4111"),
+  ENUM_ENT(EF_MIPS_MACH_SB1, "sb1"),
+  ENUM_ENT(EF_MIPS_MACH_OCTEON, "octeon"),
+  ENUM_ENT(EF_MIPS_MACH_XLR, "xlr"),
+  ENUM_ENT(EF_MIPS_MACH_OCTEON2, "octeon2"),
+  ENUM_ENT(EF_MIPS_MACH_OCTEON3, "octeon3"),
+  ENUM_ENT(EF_MIPS_MACH_5400, "5400"),
+  ENUM_ENT(EF_MIPS_MACH_5900, "5900"),
+  ENUM_ENT(EF_MIPS_MACH_5500, "5500"),
+  ENUM_ENT(EF_MIPS_MACH_9000, "9000"),
+  ENUM_ENT(EF_MIPS_MACH_LS2E, "loongson-2e"),
+  ENUM_ENT(EF_MIPS_MACH_LS2F, "loongson-2f"),
+  ENUM_ENT(EF_MIPS_MACH_LS3A, "loongson-3a"),
+  ENUM_ENT(EF_MIPS_MICROMIPS, "micromips"),
+  ENUM_ENT(EF_MIPS_ARCH_ASE_M16, "mips16"),
+  ENUM_ENT(EF_MIPS_ARCH_ASE_MDMX, "mdmx"),
+  ENUM_ENT(EF_MIPS_ARCH_1, "mips1"),
+  ENUM_ENT(EF_MIPS_ARCH_2, "mips2"),
+  ENUM_ENT(EF_MIPS_ARCH_3, "mips3"),
+  ENUM_ENT(EF_MIPS_ARCH_4, "mips4"),
+  ENUM_ENT(EF_MIPS_ARCH_5, "mips5"),
+  ENUM_ENT(EF_MIPS_ARCH_32, "mips32"),
+  ENUM_ENT(EF_MIPS_ARCH_64, "mips64"),
+  ENUM_ENT(EF_MIPS_ARCH_32R2, "mips32r2"),
+  ENUM_ENT(EF_MIPS_ARCH_64R2, "mips64r2"),
+  ENUM_ENT(EF_MIPS_ARCH_32R6, "mips32r6"),
+  ENUM_ENT(EF_MIPS_ARCH_64R6, "mips64r6")
+};
+
+static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = {
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX602),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX705),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX805),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX908),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX909),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX90C),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1010),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1011),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1012),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1030),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1031),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1032),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1033),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK),
+  LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_SRAM_ECC)
+};
+
+static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = {
+  ENUM_ENT(EF_RISCV_RVC, "RVC"),
+  ENUM_ENT(EF_RISCV_FLOAT_ABI_SINGLE, "single-float ABI"),
+  ENUM_ENT(EF_RISCV_FLOAT_ABI_DOUBLE, "double-float ABI"),
+  ENUM_ENT(EF_RISCV_FLOAT_ABI_QUAD, "quad-float ABI"),
+  ENUM_ENT(EF_RISCV_RVE, "RVE")
+};
+
+static const EnumEntry<unsigned> ElfSymOtherFlags[] = {
+  LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL),
+  LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN),
+  LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED)
+};
+
+static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = {
+  LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
+  LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
+  LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC),
+  LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS)
+};
+
+static const EnumEntry<unsigned> ElfAArch64SymOtherFlags[] = {
+  LLVM_READOBJ_ENUM_ENT(ELF, STO_AARCH64_VARIANT_PCS)
+};
+
+static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = {
+  LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
+  LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
+  LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16)
+};
+
+static const char *getElfMipsOptionsOdkType(unsigned Odk) {
+  switch (Odk) {
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT);
+  LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE);
+  default:
+    return "Unknown";
+  }
+}
+
+template <typename ELFT>
+std::pair<const typename ELFT::Phdr *, const typename ELFT::Shdr *>
+ELFDumper<ELFT>::findDynamic() {
+  // Try to locate the PT_DYNAMIC header.
+  const Elf_Phdr *DynamicPhdr = nullptr;
+  if (Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = Obj.program_headers()) {
+    for (const Elf_Phdr &Phdr : *PhdrsOrErr) {
+      if (Phdr.p_type != ELF::PT_DYNAMIC)
+        continue;
+      DynamicPhdr = &Phdr;
+      break;
+    }
+  } else {
+    reportUniqueWarning(
+        "unable to read program headers to locate the PT_DYNAMIC segment: " +
+        toString(PhdrsOrErr.takeError()));
+  }
+
+  // Try to locate the .dynamic section in the sections header table.
+  const Elf_Shdr *DynamicSec = nullptr;
+  for (const Elf_Shdr &Sec : cantFail(Obj.sections())) {
+    if (Sec.sh_type != ELF::SHT_DYNAMIC)
+      continue;
+    DynamicSec = &Sec;
+    break;
+  }
+
+  if (DynamicPhdr && ((DynamicPhdr->p_offset + DynamicPhdr->p_filesz >
+                       ObjF.getMemoryBufferRef().getBufferSize()) ||
+                      (DynamicPhdr->p_offset + DynamicPhdr->p_filesz <
+                       DynamicPhdr->p_offset))) {
+    reportUniqueWarning(
+        "PT_DYNAMIC segment offset (0x" +
+        Twine::utohexstr(DynamicPhdr->p_offset) + ") + file size (0x" +
+        Twine::utohexstr(DynamicPhdr->p_filesz) +
+        ") exceeds the size of the file (0x" +
+        Twine::utohexstr(ObjF.getMemoryBufferRef().getBufferSize()) + ")");
+    // Don't use the broken dynamic header.
+    DynamicPhdr = nullptr;
+  }
+
+  if (DynamicPhdr && DynamicSec) {
+    if (DynamicSec->sh_addr + DynamicSec->sh_size >
+            DynamicPhdr->p_vaddr + DynamicPhdr->p_memsz ||
+        DynamicSec->sh_addr < DynamicPhdr->p_vaddr)
+      reportUniqueWarning(describe(*DynamicSec) +
+                          " is not contained within the "
+                          "PT_DYNAMIC segment");
+
+    if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr)
+      reportUniqueWarning(describe(*DynamicSec) + " is not at the start of "
+                                                  "PT_DYNAMIC segment");
+  }
+
+  return std::make_pair(DynamicPhdr, DynamicSec);
+}
+
+template <typename ELFT>
+void ELFDumper<ELFT>::loadDynamicTable() {
+  const Elf_Phdr *DynamicPhdr;
+  const Elf_Shdr *DynamicSec;
+  std::tie(DynamicPhdr, DynamicSec) = findDynamic();
+  if (!DynamicPhdr && !DynamicSec)
+    return;
+
+  DynRegionInfo FromPhdr(ObjF, *this);
+  bool IsPhdrTableValid = false;
+  if (DynamicPhdr) {
+    // Use cantFail(), because p_offset/p_filesz fields of a PT_DYNAMIC are
+    // validated in findDynamic() and so createDRI() is not expected to fail.
+    FromPhdr = cantFail(createDRI(DynamicPhdr->p_offset, DynamicPhdr->p_filesz,
+                                  sizeof(Elf_Dyn)));
+    FromPhdr.SizePrintName = "PT_DYNAMIC size";
+    FromPhdr.EntSizePrintName = "";
+    IsPhdrTableValid = !FromPhdr.template getAsArrayRef<Elf_Dyn>().empty();
+  }
+
+  // Locate the dynamic table described in a section header.
+  // Ignore sh_entsize and use the expected value for entry size explicitly.
+  // This allows us to dump dynamic sections with a broken sh_entsize
+  // field.
+  DynRegionInfo FromSec(ObjF, *this);
+  bool IsSecTableValid = false;
+  if (DynamicSec) {
+    Expected<DynRegionInfo> RegOrErr =
+        createDRI(DynamicSec->sh_offset, DynamicSec->sh_size, sizeof(Elf_Dyn));
+    if (RegOrErr) {
+      FromSec = *RegOrErr;
+      FromSec.Context = describe(*DynamicSec);
+      FromSec.EntSizePrintName = "";
+      IsSecTableValid = !FromSec.template getAsArrayRef<Elf_Dyn>().empty();
+    } else {
+      reportUniqueWarning("unable to read the dynamic table from " +
+                          describe(*DynamicSec) + ": " +
+                          toString(RegOrErr.takeError()));
+    }
+  }
+
+  // When we only have information from one of the SHT_DYNAMIC section header or
+  // PT_DYNAMIC program header, just use that.
+  if (!DynamicPhdr || !DynamicSec) {
+    if ((DynamicPhdr && IsPhdrTableValid) || (DynamicSec && IsSecTableValid)) {
+      DynamicTable = DynamicPhdr ? FromPhdr : FromSec;
+      parseDynamicTable();
+    } else {
+      reportUniqueWarning("no valid dynamic table was found");
+    }
+    return;
+  }
+
+  // At this point we have tables found from the section header and from the
+  // dynamic segment. Usually they match, but we have to do sanity checks to
+  // verify that.
+
+  if (FromPhdr.Addr != FromSec.Addr)
+    reportUniqueWarning("SHT_DYNAMIC section header and PT_DYNAMIC "
+                        "program header disagree about "
+                        "the location of the dynamic table");
+
+  if (!IsPhdrTableValid && !IsSecTableValid) {
+    reportUniqueWarning("no valid dynamic table was found");
+    return;
+  }
+
+  // Information in the PT_DYNAMIC program header has priority over the
+  // information in a section header.
+  if (IsPhdrTableValid) {
+    if (!IsSecTableValid)
+      reportUniqueWarning(
+          "SHT_DYNAMIC dynamic table is invalid: PT_DYNAMIC will be used");
+    DynamicTable = FromPhdr;
+  } else {
+    reportUniqueWarning(
+        "PT_DYNAMIC dynamic table is invalid: SHT_DYNAMIC will be used");
+    DynamicTable = FromSec;
+  }
+
+  parseDynamicTable();
+}
+
+template <typename ELFT>
+ELFDumper<ELFT>::ELFDumper(const object::ELFObjectFile<ELFT> &O,
+                           ScopedPrinter &Writer)
+    : ObjDumper(Writer, O.getFileName()), ObjF(O), Obj(O.getELFFile()),
+      FileName(O.getFileName()), DynRelRegion(O, *this),
+      DynRelaRegion(O, *this), DynRelrRegion(O, *this),
+      DynPLTRelRegion(O, *this), DynSymTabShndxRegion(O, *this),
+      DynamicTable(O, *this) {
+  if (!O.IsContentValid())
+    return;
+
+  typename ELFT::ShdrRange Sections = cantFail(Obj.sections());
+  for (const Elf_Shdr &Sec : Sections) {
+    switch (Sec.sh_type) {
+    case ELF::SHT_SYMTAB:
+      if (!DotSymtabSec)
+        DotSymtabSec = &Sec;
+      break;
+    case ELF::SHT_DYNSYM:
+      if (!DotDynsymSec)
+        DotDynsymSec = &Sec;
+
+      if (!DynSymRegion) {
+        Expected<DynRegionInfo> RegOrErr =
+            createDRI(Sec.sh_offset, Sec.sh_size, Sec.sh_entsize);
+        if (RegOrErr) {
+          DynSymRegion = *RegOrErr;
+          DynSymRegion->Context = describe(Sec);
+
+          if (Expected<StringRef> E = Obj.getStringTableForSymtab(Sec))
+            DynamicStringTable = *E;
+          else
+            reportUniqueWarning("unable to get the string table for the " +
+                                describe(Sec) + ": " + toString(E.takeError()));
+        } else {
+          reportUniqueWarning("unable to read dynamic symbols from " +
+                              describe(Sec) + ": " +
+                              toString(RegOrErr.takeError()));
+        }
+      }
+      break;
+    case ELF::SHT_SYMTAB_SHNDX: {
+      uint32_t SymtabNdx = Sec.sh_link;
+      if (SymtabNdx >= Sections.size()) {
+        reportUniqueWarning(
+            "unable to get the associated symbol table for " + describe(Sec) +
+            ": sh_link (" + Twine(SymtabNdx) +
+            ") is greater than or equal to the total number of sections (" +
+            Twine(Sections.size()) + ")");
+        continue;
+      }
+
+      if (Expected<ArrayRef<Elf_Word>> ShndxTableOrErr =
+              Obj.getSHNDXTable(Sec)) {
+        if (!ShndxTables.insert({&Sections[SymtabNdx], *ShndxTableOrErr})
+                 .second)
+          reportUniqueWarning(
+              "multiple SHT_SYMTAB_SHNDX sections are linked to " +
+              describe(Sec));
+      } else {
+        reportUniqueWarning(ShndxTableOrErr.takeError());
+      }
+      break;
+    }
+    case ELF::SHT_GNU_versym:
+      if (!SymbolVersionSection)
+        SymbolVersionSection = &Sec;
+      break;
+    case ELF::SHT_GNU_verdef:
+      if (!SymbolVersionDefSection)
+        SymbolVersionDefSection = &Sec;
+      break;
+    case ELF::SHT_GNU_verneed:
+      if (!SymbolVersionNeedSection)
+        SymbolVersionNeedSection = &Sec;
+      break;
+    case ELF::SHT_LLVM_CALL_GRAPH_PROFILE:
+      if (!DotCGProfileSec)
+        DotCGProfileSec = &Sec;
+      break;
+    case ELF::SHT_LLVM_ADDRSIG:
+      if (!DotAddrsigSec)
+        DotAddrsigSec = &Sec;
+      break;
+    }
+  }
+
+  loadDynamicTable();
+}
+
+template <typename ELFT> void ELFDumper<ELFT>::parseDynamicTable() {
+  auto toMappedAddr = [&](uint64_t Tag, uint64_t VAddr) -> const uint8_t * {
+    auto MappedAddrOrError = Obj.toMappedAddr(VAddr, [&](const Twine &Msg) {
+      this->reportUniqueWarning(Msg);
+      return Error::success();
+    });
+    if (!MappedAddrOrError) {
+      this->reportUniqueWarning("unable to parse DT_" +
+                                Obj.getDynamicTagAsString(Tag) + ": " +
+                                llvm::toString(MappedAddrOrError.takeError()));
+      return nullptr;
+    }
+    return MappedAddrOrError.get();
+  };
+
+  const char *StringTableBegin = nullptr;
+  uint64_t StringTableSize = 0;
+  Optional<DynRegionInfo> DynSymFromTable;
+  for (const Elf_Dyn &Dyn : dynamic_table()) {
+    switch (Dyn.d_tag) {
+    case ELF::DT_HASH:
+      HashTable = reinterpret_cast<const Elf_Hash *>(
+          toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
+      break;
+    case ELF::DT_GNU_HASH:
+      GnuHashTable = reinterpret_cast<const Elf_GnuHash *>(
+          toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
+      break;
+    case ELF::DT_STRTAB:
+      StringTableBegin = reinterpret_cast<const char *>(
+          toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
+      break;
+    case ELF::DT_STRSZ:
+      StringTableSize = Dyn.getVal();
+      break;
+    case ELF::DT_SYMTAB: {
+      // If we can't map the DT_SYMTAB value to an address (e.g. when there are
+      // no program headers), we ignore its value.
+      if (const uint8_t *VA = toMappedAddr(Dyn.getTag(), Dyn.getPtr())) {
+        DynSymFromTable.emplace(ObjF, *this);
+        DynSymFromTable->Addr = VA;
+        DynSymFromTable->EntSize = sizeof(Elf_Sym);
+        DynSymFromTable->EntSizePrintName = "";
+      }
+      break;
+    }
+    case ELF::DT_SYMENT: {
+      uint64_t Val = Dyn.getVal();
+      if (Val != sizeof(Elf_Sym))
+        this->reportUniqueWarning("DT_SYMENT value of 0x" +
+                                  Twine::utohexstr(Val) +
+                                  " is not the size of a symbol (0x" +
+                                  Twine::utohexstr(sizeof(Elf_Sym)) + ")");
+      break;
+    }
+    case ELF::DT_RELA:
+      DynRelaRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
+      break;
+    case ELF::DT_RELASZ:
+      DynRelaRegion.Size = Dyn.getVal();
+      DynRelaRegion.SizePrintName = "DT_RELASZ value";
+      break;
+    case ELF::DT_RELAENT:
+      DynRelaRegion.EntSize = Dyn.getVal();
+      DynRelaRegion.EntSizePrintName = "DT_RELAENT value";
+      break;
+    case ELF::DT_SONAME:
+      SONameOffset = Dyn.getVal();
+      break;
+    case ELF::DT_REL:
+      DynRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
+      break;
+    case ELF::DT_RELSZ:
+      DynRelRegion.Size = Dyn.getVal();
+      DynRelRegion.SizePrintName = "DT_RELSZ value";
+      break;
+    case ELF::DT_RELENT:
+      DynRelRegion.EntSize = Dyn.getVal();
+      DynRelRegion.EntSizePrintName = "DT_RELENT value";
+      break;
+    case ELF::DT_RELR:
+    case ELF::DT_ANDROID_RELR:
+      DynRelrRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
+      break;
+    case ELF::DT_RELRSZ:
+    case ELF::DT_ANDROID_RELRSZ:
+      DynRelrRegion.Size = Dyn.getVal();
+      DynRelrRegion.SizePrintName = Dyn.d_tag == ELF::DT_RELRSZ
+                                        ? "DT_RELRSZ value"
+                                        : "DT_ANDROID_RELRSZ value";
+      break;
+    case ELF::DT_RELRENT:
+    case ELF::DT_ANDROID_RELRENT:
+      DynRelrRegion.EntSize = Dyn.getVal();
+      DynRelrRegion.EntSizePrintName = Dyn.d_tag == ELF::DT_RELRENT
+                                           ? "DT_RELRENT value"
+                                           : "DT_ANDROID_RELRENT value";
+      break;
+    case ELF::DT_PLTREL:
+      if (Dyn.getVal() == DT_REL)
+        DynPLTRelRegion.EntSize = sizeof(Elf_Rel);
+      else if (Dyn.getVal() == DT_RELA)
+        DynPLTRelRegion.EntSize = sizeof(Elf_Rela);
+      else
+        reportUniqueWarning(Twine("unknown DT_PLTREL value of ") +
+                            Twine((uint64_t)Dyn.getVal()));
+      DynPLTRelRegion.EntSizePrintName = "PLTREL entry size";
+      break;
+    case ELF::DT_JMPREL:
+      DynPLTRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
+      break;
+    case ELF::DT_PLTRELSZ:
+      DynPLTRelRegion.Size = Dyn.getVal();
+      DynPLTRelRegion.SizePrintName = "DT_PLTRELSZ value";
+      break;
+    case ELF::DT_SYMTAB_SHNDX:
+      DynSymTabShndxRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
+      DynSymTabShndxRegion.EntSize = sizeof(Elf_Word);
+      break;
+    }
+  }
+
+  if (StringTableBegin) {
+    const uint64_t FileSize = Obj.getBufSize();
+    const uint64_t Offset = (const uint8_t *)StringTableBegin - Obj.base();
+    if (StringTableSize > FileSize - Offset)
+      reportUniqueWarning(
+          "the dynamic string table at 0x" + Twine::utohexstr(Offset) +
+          " goes past the end of the file (0x" + Twine::utohexstr(FileSize) +
+          ") with DT_STRSZ = 0x" + Twine::utohexstr(StringTableSize));
+    else
+      DynamicStringTable = StringRef(StringTableBegin, StringTableSize);
+  }
+
+  const bool IsHashTableSupported = getHashTableEntSize() == 4;
+  if (DynSymRegion) {
+    // Often we find the information about the dynamic symbol table
+    // location in the SHT_DYNSYM section header. However, the value in
+    // DT_SYMTAB has priority, because it is used by dynamic loaders to
+    // locate .dynsym at runtime. The location we find in the section header
+    // and the location we find here should match.
+    if (DynSymFromTable && DynSymFromTable->Addr != DynSymRegion->Addr)
+      reportUniqueWarning(
+          createError("SHT_DYNSYM section header and DT_SYMTAB disagree about "
+                      "the location of the dynamic symbol table"));
+
+    // According to the ELF gABI: "The number of symbol table entries should
+    // equal nchain". Check to see if the DT_HASH hash table nchain value
+    // conflicts with the number of symbols in the dynamic symbol table
+    // according to the section header.
+    if (HashTable && IsHashTableSupported) {
+      if (DynSymRegion->EntSize == 0)
+        reportUniqueWarning("SHT_DYNSYM section has sh_entsize == 0");
+      else if (HashTable->nchain != DynSymRegion->Size / DynSymRegion->EntSize)
+        reportUniqueWarning(
+            "hash table nchain (" + Twine(HashTable->nchain) +
+            ") differs from symbol count derived from SHT_DYNSYM section "
+            "header (" +
+            Twine(DynSymRegion->Size / DynSymRegion->EntSize) + ")");
+    }
+  }
+
+  // Delay the creation of the actual dynamic symbol table until now, so that
+  // checks can always be made against the section header-based properties,
+  // without worrying about tag order.
+  if (DynSymFromTable) {
+    if (!DynSymRegion) {
+      DynSymRegion = DynSymFromTable;
+    } else {
+      DynSymRegion->Addr = DynSymFromTable->Addr;
+      DynSymRegion->EntSize = DynSymFromTable->EntSize;
+      DynSymRegion->EntSizePrintName = DynSymFromTable->EntSizePrintName;
+    }
+  }
+
+  // Derive the dynamic symbol table size from the DT_HASH hash table, if
+  // present.
+  if (HashTable && IsHashTableSupported && DynSymRegion) {
+    const uint64_t FileSize = Obj.getBufSize();
+    const uint64_t DerivedSize =
+        (uint64_t)HashTable->nchain * DynSymRegion->EntSize;
+    const uint64_t Offset = (const uint8_t *)DynSymRegion->Addr - Obj.base();
+    if (DerivedSize > FileSize - Offset)
+      reportUniqueWarning(
+          "the size (0x" + Twine::utohexstr(DerivedSize) +
+          ") of the dynamic symbol table at 0x" + Twine::utohexstr(Offset) +
+          ", derived from the hash table, goes past the end of the file (0x" +
+          Twine::utohexstr(FileSize) + ") and will be ignored");
+    else
+      DynSymRegion->Size = HashTable->nchain * DynSymRegion->EntSize;
+  }
+}
+
+template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() {
+  // Dump version symbol section.
+  printVersionSymbolSection(SymbolVersionSection);
+
+  // Dump version definition section.
+  printVersionDefinitionSection(SymbolVersionDefSection);
+
+  // Dump version dependency section.
+  printVersionDependencySection(SymbolVersionNeedSection);
+}
+
+#define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum)                                 \
+  { #enum, prefix##_##enum }
+
+static const EnumEntry<unsigned> ElfDynamicDTFlags[] = {
+  LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN),
+  LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC),
+  LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL),
+  LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW),
+  LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS)
+};
+
+static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = {
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELPND),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON),
+  LLVM_READOBJ_DT_FLAG_ENT(DF_1, PIE),
+};
+
+static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = {
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT),
+  LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF),
+  LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE)
+};
+
+#undef LLVM_READOBJ_DT_FLAG_ENT
+
+template <typename T, typename TFlag>
+void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) {
+  SmallVector<EnumEntry<TFlag>, 10> SetFlags;
+  for (const EnumEntry<TFlag> &Flag : Flags)
+    if (Flag.Value != 0 && (Value & Flag.Value) == Flag.Value)
+      SetFlags.push_back(Flag);
+
+  for (const EnumEntry<TFlag> &Flag : SetFlags)
+    OS << Flag.Name << " ";
+}
+
+template <class ELFT>
+const typename ELFT::Shdr *
+ELFDumper<ELFT>::findSectionByName(StringRef Name) const {
+  for (const Elf_Shdr &Shdr : cantFail(Obj.sections())) {
+    if (Expected<StringRef> NameOrErr = Obj.getSectionName(Shdr)) {
+      if (*NameOrErr == Name)
+        return &Shdr;
+    } else {
+      reportUniqueWarning("unable to read the name of " + describe(Shdr) +
+                          ": " + toString(NameOrErr.takeError()));
+    }
+  }
+  return nullptr;
+}
+
+template <class ELFT>
+std::string ELFDumper<ELFT>::getDynamicEntry(uint64_t Type,
+                                             uint64_t Value) const {
+  auto FormatHexValue = [](uint64_t V) {
+    std::string Str;
+    raw_string_ostream OS(Str);
+    const char *ConvChar =
+        (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64;
+    OS << format(ConvChar, V);
+    return OS.str();
+  };
+
+  auto FormatFlags = [](uint64_t V,
+                        llvm::ArrayRef<llvm::EnumEntry<unsigned int>> Array) {
+    std::string Str;
+    raw_string_ostream OS(Str);
+    printFlags(V, Array, OS);
+    return OS.str();
+  };
+
+  // Handle custom printing of architecture specific tags
+  switch (Obj.getHeader().e_machine) {
+  case EM_AARCH64:
+    switch (Type) {
+    case DT_AARCH64_BTI_PLT:
+    case DT_AARCH64_PAC_PLT:
+    case DT_AARCH64_VARIANT_PCS:
+      return std::to_string(Value);
+    default:
+      break;
+    }
+    break;
+  case EM_HEXAGON:
+    switch (Type) {
+    case DT_HEXAGON_VER:
+      return std::to_string(Value);
+    case DT_HEXAGON_SYMSZ:
+    case DT_HEXAGON_PLT:
+      return FormatHexValue(Value);
+    default:
+      break;
+    }
+    break;
+  case EM_MIPS:
+    switch (Type) {
+    case DT_MIPS_RLD_VERSION:
+    case DT_MIPS_LOCAL_GOTNO:
+    case DT_MIPS_SYMTABNO:
+    case DT_MIPS_UNREFEXTNO:
+      return std::to_string(Value);
+    case DT_MIPS_TIME_STAMP:
+    case DT_MIPS_ICHECKSUM:
+    case DT_MIPS_IVERSION:
+    case DT_MIPS_BASE_ADDRESS:
+    case DT_MIPS_MSYM:
+    case DT_MIPS_CONFLICT:
+    case DT_MIPS_LIBLIST:
+    case DT_MIPS_CONFLICTNO:
+    case DT_MIPS_LIBLISTNO:
+    case DT_MIPS_GOTSYM:
+    case DT_MIPS_HIPAGENO:
+    case DT_MIPS_RLD_MAP:
+    case DT_MIPS_DELTA_CLASS:
+    case DT_MIPS_DELTA_CLASS_NO:
+    case DT_MIPS_DELTA_INSTANCE:
+    case DT_MIPS_DELTA_RELOC:
+    case DT_MIPS_DELTA_RELOC_NO:
+    case DT_MIPS_DELTA_SYM:
+    case DT_MIPS_DELTA_SYM_NO:
+    case DT_MIPS_DELTA_CLASSSYM:
+    case DT_MIPS_DELTA_CLASSSYM_NO:
+    case DT_MIPS_CXX_FLAGS:
+    case DT_MIPS_PIXIE_INIT:
+    case DT_MIPS_SYMBOL_LIB:
+    case DT_MIPS_LOCALPAGE_GOTIDX:
+    case DT_MIPS_LOCAL_GOTIDX:
+    case DT_MIPS_HIDDEN_GOTIDX:
+    case DT_MIPS_PROTECTED_GOTIDX:
+    case DT_MIPS_OPTIONS:
+    case DT_MIPS_INTERFACE:
+    case DT_MIPS_DYNSTR_ALIGN:
+    case DT_MIPS_INTERFACE_SIZE:
+    case DT_MIPS_RLD_TEXT_RESOLVE_ADDR:
+    case DT_MIPS_PERF_SUFFIX:
+    case DT_MIPS_COMPACT_SIZE:
+    case DT_MIPS_GP_VALUE:
+    case DT_MIPS_AUX_DYNAMIC:
+    case DT_MIPS_PLTGOT:
+    case DT_MIPS_RWPLT:
+    case DT_MIPS_RLD_MAP_REL:
+      return FormatHexValue(Value);
+    case DT_MIPS_FLAGS:
+      return FormatFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags));
+    default:
+      break;
+    }
+    break;
+  default:
+    break;
+  }
+
+  switch (Type) {
+  case DT_PLTREL:
+    if (Value == DT_REL)
+      return "REL";
+    if (Value == DT_RELA)
+      return "RELA";
+    LLVM_FALLTHROUGH;
+  case DT_PLTGOT:
+  case DT_HASH:
+  case DT_STRTAB:
+  case DT_SYMTAB:
+  case DT_RELA:
+  case DT_INIT:
+  case DT_FINI:
+  case DT_REL:
+  case DT_JMPREL:
+  case DT_INIT_ARRAY:
+  case DT_FINI_ARRAY:
+  case DT_PREINIT_ARRAY:
+  case DT_DEBUG:
+  case DT_VERDEF:
+  case DT_VERNEED:
+  case DT_VERSYM:
+  case DT_GNU_HASH:
+  case DT_NULL:
+    return FormatHexValue(Value);
+  case DT_RELACOUNT:
+  case DT_RELCOUNT:
+  case DT_VERDEFNUM:
+  case DT_VERNEEDNUM:
+    return std::to_string(Value);
+  case DT_PLTRELSZ:
+  case DT_RELASZ:
+  case DT_RELAENT:
+  case DT_STRSZ:
+  case DT_SYMENT:
+  case DT_RELSZ:
+  case DT_RELENT:
+  case DT_INIT_ARRAYSZ:
+  case DT_FINI_ARRAYSZ:
+  case DT_PREINIT_ARRAYSZ:
+  case DT_ANDROID_RELSZ:
+  case DT_ANDROID_RELASZ:
+    return std::to_string(Value) + " (bytes)";
+  case DT_NEEDED:
+  case DT_SONAME:
+  case DT_AUXILIARY:
+  case DT_USED:
+  case DT_FILTER:
+  case DT_RPATH:
+  case DT_RUNPATH: {
+    const std::map<uint64_t, const char *> TagNames = {
+        {DT_NEEDED, "Shared library"},       {DT_SONAME, "Library soname"},
+        {DT_AUXILIARY, "Auxiliary library"}, {DT_USED, "Not needed object"},
+        {DT_FILTER, "Filter library"},       {DT_RPATH, "Library rpath"},
+        {DT_RUNPATH, "Library runpath"},
+    };
+
+    return (Twine(TagNames.at(Type)) + ": [" + getDynamicString(Value) + "]")
+        .str();
+  }
+  case DT_FLAGS:
+    return FormatFlags(Value, makeArrayRef(ElfDynamicDTFlags));
+  case DT_FLAGS_1:
+    return FormatFlags(Value, makeArrayRef(ElfDynamicDTFlags1));
+  default:
+    return FormatHexValue(Value);
+  }
+}
+
+template <class ELFT>
+StringRef ELFDumper<ELFT>::getDynamicString(uint64_t Value) const {
+  if (DynamicStringTable.empty() && !DynamicStringTable.data()) {
+    reportUniqueWarning("string table was not found");
+    return "<?>";
+  }
+
+  auto WarnAndReturn = [this](const Twine &Msg, uint64_t Offset) {
+    reportUniqueWarning("string table at offset 0x" + Twine::utohexstr(Offset) +
+                        Msg);
+    return "<?>";
+  };
+
+  const uint64_t FileSize = Obj.getBufSize();
+  const uint64_t Offset =
+      (const uint8_t *)DynamicStringTable.data() - Obj.base();
+  if (DynamicStringTable.size() > FileSize - Offset)
+    return WarnAndReturn(" with size 0x" +
+                             Twine::utohexstr(DynamicStringTable.size()) +
+                             " goes past the end of the file (0x" +
+                             Twine::utohexstr(FileSize) + ")",
+                         Offset);
+
+  if (Value >= DynamicStringTable.size())
+    return WarnAndReturn(
+        ": unable to read the string at 0x" + Twine::utohexstr(Offset + Value) +
+            ": it goes past the end of the table (0x" +
+            Twine::utohexstr(Offset + DynamicStringTable.size()) + ")",
+        Offset);
+
+  if (DynamicStringTable.back() != '\0')
+    return WarnAndReturn(": unable to read the string at 0x" +
+                             Twine::utohexstr(Offset + Value) +
+                             ": the string table is not null-terminated",
+                         Offset);
+
+  return DynamicStringTable.data() + Value;
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printUnwindInfo() {
+  DwarfCFIEH::PrinterContext<ELFT> Ctx(W, ObjF);
+  Ctx.printUnwindInformation();
+}
+
+// The namespace is needed to fix the compilation with GCC older than 7.0+.
+namespace {
+template <> void ELFDumper<ELF32LE>::printUnwindInfo() {
+  if (Obj.getHeader().e_machine == EM_ARM) {
+    ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, ObjF.getFileName(),
+                                            DotSymtabSec);
+    Ctx.PrintUnwindInformation();
+  }
+  DwarfCFIEH::PrinterContext<ELF32LE> Ctx(W, ObjF);
+  Ctx.printUnwindInformation();
+}
+} // namespace
+
+template <class ELFT> void ELFDumper<ELFT>::printNeededLibraries() {
+  ListScope D(W, "NeededLibraries");
+
+  std::vector<StringRef> Libs;
+  for (const auto &Entry : dynamic_table())
+    if (Entry.d_tag == ELF::DT_NEEDED)
+      Libs.push_back(getDynamicString(Entry.d_un.d_val));
+
+  llvm::sort(Libs);
+
+  for (StringRef L : Libs)
+    W.startLine() << L << "\n";
+}
+
+template <class ELFT>
+static Error checkHashTable(const ELFDumper<ELFT> &Dumper,
+                            const typename ELFT::Hash *H,
+                            bool *IsHeaderValid = nullptr) {
+  const ELFFile<ELFT> &Obj = Dumper.getElfObject().getELFFile();
+  const uint64_t SecOffset = (const uint8_t *)H - Obj.base();
+  if (Dumper.getHashTableEntSize() == 8) {
+    auto It = llvm::find_if(ElfMachineType, [&](const EnumEntry<unsigned> &E) {
+      return E.Value == Obj.getHeader().e_machine;
+    });
+    if (IsHeaderValid)
+      *IsHeaderValid = false;
+    return createError("the hash table at 0x" + Twine::utohexstr(SecOffset) +
+                       " is not supported: it contains non-standard 8 "
+                       "byte entries on " +
+                       It->AltName + " platform");
+  }
+
+  auto MakeError = [&](const Twine &Msg = "") {
+    return createError("the hash table at offset 0x" +
+                       Twine::utohexstr(SecOffset) +
+                       " goes past the end of the file (0x" +
+                       Twine::utohexstr(Obj.getBufSize()) + ")" + Msg);
+  };
+
+  // Each SHT_HASH section starts from two 32-bit fields: nbucket and nchain.
+  const unsigned HeaderSize = 2 * sizeof(typename ELFT::Word);
+
+  if (IsHeaderValid)
+    *IsHeaderValid = Obj.getBufSize() - SecOffset >= HeaderSize;
+
+  if (Obj.getBufSize() - SecOffset < HeaderSize)
+    return MakeError();
+
+  if (Obj.getBufSize() - SecOffset - HeaderSize <
+      ((uint64_t)H->nbucket + H->nchain) * sizeof(typename ELFT::Word))
+    return MakeError(", nbucket = " + Twine(H->nbucket) +
+                     ", nchain = " + Twine(H->nchain));
+  return Error::success();
+}
+
+template <class ELFT>
+static Error checkGNUHashTable(const ELFFile<ELFT> &Obj,
+                               const typename ELFT::GnuHash *GnuHashTable,
+                               bool *IsHeaderValid = nullptr) {
+  const uint8_t *TableData = reinterpret_cast<const uint8_t *>(GnuHashTable);
+  assert(TableData >= Obj.base() && TableData < Obj.base() + Obj.getBufSize() &&
+         "GnuHashTable must always point to a location inside the file");
+
+  uint64_t TableOffset = TableData - Obj.base();
+  if (IsHeaderValid)
+    *IsHeaderValid = TableOffset + /*Header size:*/ 16 < Obj.getBufSize();
+  if (TableOffset + 16 + (uint64_t)GnuHashTable->nbuckets * 4 +
+          (uint64_t)GnuHashTable->maskwords * sizeof(typename ELFT::Off) >=
+      Obj.getBufSize())
+    return createError("unable to dump the SHT_GNU_HASH "
+                       "section at 0x" +
+                       Twine::utohexstr(TableOffset) +
+                       ": it goes past the end of the file");
+  return Error::success();
+}
+
+template <typename ELFT> void ELFDumper<ELFT>::printHashTable() {
+  DictScope D(W, "HashTable");
+  if (!HashTable)
+    return;
+
+  bool IsHeaderValid;
+  Error Err = checkHashTable(*this, HashTable, &IsHeaderValid);
+  if (IsHeaderValid) {
+    W.printNumber("Num Buckets", HashTable->nbucket);
+    W.printNumber("Num Chains", HashTable->nchain);
+  }
+
+  if (Err) {
+    reportUniqueWarning(std::move(Err));
+    return;
+  }
+
+  W.printList("Buckets", HashTable->buckets());
+  W.printList("Chains", HashTable->chains());
+}
+
+template <class ELFT>
+static Expected<ArrayRef<typename ELFT::Word>>
+getGnuHashTableChains(Optional<DynRegionInfo> DynSymRegion,
+                      const typename ELFT::GnuHash *GnuHashTable) {
+  if (!DynSymRegion)
+    return createError("no dynamic symbol table found");
+
+  ArrayRef<typename ELFT::Sym> DynSymTable =
+      DynSymRegion->template getAsArrayRef<typename ELFT::Sym>();
+  size_t NumSyms = DynSymTable.size();
+  if (!NumSyms)
+    return createError("the dynamic symbol table is empty");
+
+  if (GnuHashTable->symndx < NumSyms)
+    return GnuHashTable->values(NumSyms);
+
+  // A normal empty GNU hash table section produced by linker might have
+  // symndx set to the number of dynamic symbols + 1 (for the zero symbol)
+  // and have dummy null values in the Bloom filter and in the buckets
+  // vector (or no values at all). It happens because the value of symndx is not
+  // important for dynamic loaders when the GNU hash table is empty. They just
+  // skip the whole object during symbol lookup. In such cases, the symndx value
+  // is irrelevant and we should not report a warning.
+  ArrayRef<typename ELFT::Word> Buckets = GnuHashTable->buckets();
+  if (!llvm::all_of(Buckets, [](typename ELFT::Word V) { return V == 0; }))
+    return createError(
+        "the first hashed symbol index (" + Twine(GnuHashTable->symndx) +
+        ") is greater than or equal to the number of dynamic symbols (" +
+        Twine(NumSyms) + ")");
+  // There is no way to represent an array of (dynamic symbols count - symndx)
+  // length.
+  return ArrayRef<typename ELFT::Word>();
+}
+
+template <typename ELFT>
+void ELFDumper<ELFT>::printGnuHashTable() {
+  DictScope D(W, "GnuHashTable");
+  if (!GnuHashTable)
+    return;
+
+  bool IsHeaderValid;
+  Error Err = checkGNUHashTable<ELFT>(Obj, GnuHashTable, &IsHeaderValid);
+  if (IsHeaderValid) {
+    W.printNumber("Num Buckets", GnuHashTable->nbuckets);
+    W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx);
+    W.printNumber("Num Mask Words", GnuHashTable->maskwords);
+    W.printNumber("Shift Count", GnuHashTable->shift2);
+  }
+
+  if (Err) {
+    reportUniqueWarning(std::move(Err));
+    return;
+  }
+
+  ArrayRef<typename ELFT::Off> BloomFilter = GnuHashTable->filter();
+  W.printHexList("Bloom Filter", BloomFilter);
+
+  ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets();
+  W.printList("Buckets", Buckets);
+
+  Expected<ArrayRef<Elf_Word>> Chains =
+      getGnuHashTableChains<ELFT>(DynSymRegion, GnuHashTable);
+  if (!Chains) {
+    reportUniqueWarning("unable to dump 'Values' for the SHT_GNU_HASH "
+                        "section: " +
+                        toString(Chains.takeError()));
+    return;
+  }
+
+  W.printHexList("Values", *Chains);
+}
+
+template <typename ELFT> void ELFDumper<ELFT>::printLoadName() {
+  StringRef SOName = "<Not found>";
+  if (SONameOffset)
+    SOName = getDynamicString(*SONameOffset);
+  W.printString("LoadName", SOName);
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printArchSpecificInfo() {
+  switch (Obj.getHeader().e_machine) {
+  case EM_ARM:
+  case EM_RISCV:
+    printAttributes();
+    break;
+  case EM_MIPS: {
+    printMipsABIFlags();
+    printMipsOptions();
+    printMipsReginfo();
+    MipsGOTParser<ELFT> Parser(*this);
+    if (Error E = Parser.findGOT(dynamic_table(), dynamic_symbols()))
+      reportUniqueWarning(std::move(E));
+    else if (!Parser.isGotEmpty())
+      printMipsGOT(Parser);
+
+    if (Error E = Parser.findPLT(dynamic_table()))
+      reportUniqueWarning(std::move(E));
+    else if (!Parser.isPltEmpty())
+      printMipsPLT(Parser);
+    break;
+  }
+  default:
+    break;
+  }
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printAttributes() {
+  if (!Obj.isLE()) {
+    W.startLine() << "Attributes not implemented.\n";
+    return;
+  }
+
+  const unsigned Machine = Obj.getHeader().e_machine;
+  assert((Machine == EM_ARM || Machine == EM_RISCV) &&
+         "Attributes not implemented.");
+
+  DictScope BA(W, "BuildAttributes");
+  for (const Elf_Shdr &Sec : cantFail(Obj.sections())) {
+    if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES &&
+        Sec.sh_type != ELF::SHT_RISCV_ATTRIBUTES)
+      continue;
+
+    ArrayRef<uint8_t> Contents;
+    if (Expected<ArrayRef<uint8_t>> ContentOrErr =
+            Obj.getSectionContents(Sec)) {
+      Contents = *ContentOrErr;
+      if (Contents.empty()) {
+        reportUniqueWarning("the " + describe(Sec) + " is empty");
+        continue;
+      }
+    } else {
+      reportUniqueWarning("unable to read the content of the " + describe(Sec) +
+                          ": " + toString(ContentOrErr.takeError()));
+      continue;
+    }
+
+    W.printHex("FormatVersion", Contents[0]);
+
+    auto ParseAttrubutes = [&]() {
+      if (Machine == EM_ARM)
+        return ARMAttributeParser(&W).parse(Contents, support::little);
+      return RISCVAttributeParser(&W).parse(Contents, support::little);
+    };
+
+    if (Error E = ParseAttrubutes())
+      reportUniqueWarning("unable to dump attributes from the " +
+                          describe(Sec) + ": " + toString(std::move(E)));
+  }
+}
+
+namespace {
+
+template <class ELFT> class MipsGOTParser {
+public:
+  LLVM_ELF_IMPORT_TYPES_ELFT(ELFT)
+  using Entry = typename ELFT::Addr;
+  using Entries = ArrayRef<Entry>;
+
+  const bool IsStatic;
+  const ELFFile<ELFT> &Obj;
+  const ELFDumper<ELFT> &Dumper;
+
+  MipsGOTParser(const ELFDumper<ELFT> &D);
+  Error findGOT(Elf_Dyn_Range DynTable, Elf_Sym_Range DynSyms);
+  Error findPLT(Elf_Dyn_Range DynTable);
+
+  bool isGotEmpty() const { return GotEntries.empty(); }
+  bool isPltEmpty() const { return PltEntries.empty(); }
+
+  uint64_t getGp() const;
+
+  const Entry *getGotLazyResolver() const;
+  const Entry *getGotModulePointer() const;
+  const Entry *getPltLazyResolver() const;
+  const Entry *getPltModulePointer() const;
+
+  Entries getLocalEntries() const;
+  Entries getGlobalEntries() const;
+  Entries getOtherEntries() const;
+  Entries getPltEntries() const;
+
+  uint64_t getGotAddress(const Entry * E) const;
+  int64_t getGotOffset(const Entry * E) const;
+  const Elf_Sym *getGotSym(const Entry *E) const;
+
+  uint64_t getPltAddress(const Entry * E) const;
+  const Elf_Sym *getPltSym(const Entry *E) const;
+
+  StringRef getPltStrTable() const { return PltStrTable; }
+  const Elf_Shdr *getPltSymTable() const { return PltSymTable; }
+
+private:
+  const Elf_Shdr *GotSec;
+  size_t LocalNum;
+  size_t GlobalNum;
+
+  const Elf_Shdr *PltSec;
+  const Elf_Shdr *PltRelSec;
+  const Elf_Shdr *PltSymTable;
+  StringRef FileName;
+
+  Elf_Sym_Range GotDynSyms;
+  StringRef PltStrTable;
+
+  Entries GotEntries;
+  Entries PltEntries;
+};
+
+} // end anonymous namespace
+
+template <class ELFT>
+MipsGOTParser<ELFT>::MipsGOTParser(const ELFDumper<ELFT> &D)
+    : IsStatic(D.dynamic_table().empty()), Obj(D.getElfObject().getELFFile()),
+      Dumper(D), GotSec(nullptr), LocalNum(0), GlobalNum(0), PltSec(nullptr),
+      PltRelSec(nullptr), PltSymTable(nullptr),
+      FileName(D.getElfObject().getFileName()) {}
+
+template <class ELFT>
+Error MipsGOTParser<ELFT>::findGOT(Elf_Dyn_Range DynTable,
+                                   Elf_Sym_Range DynSyms) {
+  // See "Global Offset Table" in Chapter 5 in the following document
+  // for detailed GOT description.
+  // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
+
+  // Find static GOT secton.
+  if (IsStatic) {
+    GotSec = Dumper.findSectionByName(".got");
+    if (!GotSec)
+      return Error::success();
+
+    ArrayRef<uint8_t> Content =
+        unwrapOrError(FileName, Obj.getSectionContents(*GotSec));
+    GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
+                         Content.size() / sizeof(Entry));
+    LocalNum = GotEntries.size();
+    return Error::success();
+  }
+
+  // Lookup dynamic table tags which define the GOT layout.
+  Optional<uint64_t> DtPltGot;
+  Optional<uint64_t> DtLocalGotNum;
+  Optional<uint64_t> DtGotSym;
+  for (const auto &Entry : DynTable) {
+    switch (Entry.getTag()) {
+    case ELF::DT_PLTGOT:
+      DtPltGot = Entry.getVal();
+      break;
+    case ELF::DT_MIPS_LOCAL_GOTNO:
+      DtLocalGotNum = Entry.getVal();
+      break;
+    case ELF::DT_MIPS_GOTSYM:
+      DtGotSym = Entry.getVal();
+      break;
+    }
+  }
+
+  if (!DtPltGot && !DtLocalGotNum && !DtGotSym)
+    return Error::success();
+
+  if (!DtPltGot)
+    return createError("cannot find PLTGOT dynamic tag");
+  if (!DtLocalGotNum)
+    return createError("cannot find MIPS_LOCAL_GOTNO dynamic tag");
+  if (!DtGotSym)
+    return createError("cannot find MIPS_GOTSYM dynamic tag");
+
+  size_t DynSymTotal = DynSyms.size();
+  if (*DtGotSym > DynSymTotal)
+    return createError("DT_MIPS_GOTSYM value (" + Twine(*DtGotSym) +
+                       ") exceeds the number of dynamic symbols (" +
+                       Twine(DynSymTotal) + ")");
+
+  GotSec = findNotEmptySectionByAddress(Obj, FileName, *DtPltGot);
+  if (!GotSec)
+    return createError("there is no non-empty GOT section at 0x" +
+                       Twine::utohexstr(*DtPltGot));
+
+  LocalNum = *DtLocalGotNum;
+  GlobalNum = DynSymTotal - *DtGotSym;
+
+  ArrayRef<uint8_t> Content =
+      unwrapOrError(FileName, Obj.getSectionContents(*GotSec));
+  GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
+                       Content.size() / sizeof(Entry));
+  GotDynSyms = DynSyms.drop_front(*DtGotSym);
+
+  return Error::success();
+}
+
+template <class ELFT>
+Error MipsGOTParser<ELFT>::findPLT(Elf_Dyn_Range DynTable) {
+  // Lookup dynamic table tags which define the PLT layout.
+  Optional<uint64_t> DtMipsPltGot;
+  Optional<uint64_t> DtJmpRel;
+  for (const auto &Entry : DynTable) {
+    switch (Entry.getTag()) {
+    case ELF::DT_MIPS_PLTGOT:
+      DtMipsPltGot = Entry.getVal();
+      break;
+    case ELF::DT_JMPREL:
+      DtJmpRel = Entry.getVal();
+      break;
+    }
+  }
+
+  if (!DtMipsPltGot && !DtJmpRel)
+    return Error::success();
+
+  // Find PLT section.
+  if (!DtMipsPltGot)
+    return createError("cannot find MIPS_PLTGOT dynamic tag");
+  if (!DtJmpRel)
+    return createError("cannot find JMPREL dynamic tag");
+
+  PltSec = findNotEmptySectionByAddress(Obj, FileName, *DtMipsPltGot);
+  if (!PltSec)
+    return createError("there is no non-empty PLTGOT section at 0x" +
+                       Twine::utohexstr(*DtMipsPltGot));
+
+  PltRelSec = findNotEmptySectionByAddress(Obj, FileName, *DtJmpRel);
+  if (!PltRelSec)
+    return createError("there is no non-empty RELPLT section at 0x" +
+                       Twine::utohexstr(*DtJmpRel));
+
+  if (Expected<ArrayRef<uint8_t>> PltContentOrErr =
+          Obj.getSectionContents(*PltSec))
+    PltEntries =
+        Entries(reinterpret_cast<const Entry *>(PltContentOrErr->data()),
+                PltContentOrErr->size() / sizeof(Entry));
+  else
+    return createError("unable to read PLTGOT section content: " +
+                       toString(PltContentOrErr.takeError()));
+
+  if (Expected<const Elf_Shdr *> PltSymTableOrErr =
+          Obj.getSection(PltRelSec->sh_link))
+    PltSymTable = *PltSymTableOrErr;
+  else
+    return createError("unable to get a symbol table linked to the " +
+                       describe(Obj, *PltRelSec) + ": " +
+                       toString(PltSymTableOrErr.takeError()));
+
+  if (Expected<StringRef> StrTabOrErr =
+          Obj.getStringTableForSymtab(*PltSymTable))
+    PltStrTable = *StrTabOrErr;
+  else
+    return createError("unable to get a string table for the " +
+                       describe(Obj, *PltSymTable) + ": " +
+                       toString(StrTabOrErr.takeError()));
+
+  return Error::success();
+}
+
+template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const {
+  return GotSec->sh_addr + 0x7ff0;
+}
+
+template <class ELFT>
+const typename MipsGOTParser<ELFT>::Entry *
+MipsGOTParser<ELFT>::getGotLazyResolver() const {
+  return LocalNum > 0 ? &GotEntries[0] : nullptr;
+}
+
+template <class ELFT>
+const typename MipsGOTParser<ELFT>::Entry *
+MipsGOTParser<ELFT>::getGotModulePointer() const {
+  if (LocalNum < 2)
+    return nullptr;
+  const Entry &E = GotEntries[1];
+  if ((E >> (sizeof(Entry) * 8 - 1)) == 0)
+    return nullptr;
+  return &E;
+}
+
+template <class ELFT>
+typename MipsGOTParser<ELFT>::Entries
+MipsGOTParser<ELFT>::getLocalEntries() const {
+  size_t Skip = getGotModulePointer() ? 2 : 1;
+  if (LocalNum - Skip <= 0)
+    return Entries();
+  return GotEntries.slice(Skip, LocalNum - Skip);
+}
+
+template <class ELFT>
+typename MipsGOTParser<ELFT>::Entries
+MipsGOTParser<ELFT>::getGlobalEntries() const {
+  if (GlobalNum == 0)
+    return Entries();
+  return GotEntries.slice(LocalNum, GlobalNum);
+}
+
+template <class ELFT>
+typename MipsGOTParser<ELFT>::Entries
+MipsGOTParser<ELFT>::getOtherEntries() const {
+  size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum;
+  if (OtherNum == 0)
+    return Entries();
+  return GotEntries.slice(LocalNum + GlobalNum, OtherNum);
+}
+
+template <class ELFT>
+uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const {
+  int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry);
+  return GotSec->sh_addr + Offset;
+}
+
+template <class ELFT>
+int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const {
+  int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry);
+  return Offset - 0x7ff0;
+}
+
+template <class ELFT>
+const typename MipsGOTParser<ELFT>::Elf_Sym *
+MipsGOTParser<ELFT>::getGotSym(const Entry *E) const {
+  int64_t Offset = std::distance(GotEntries.data(), E);
+  return &GotDynSyms[Offset - LocalNum];
+}
+
+template <class ELFT>
+const typename MipsGOTParser<ELFT>::Entry *
+MipsGOTParser<ELFT>::getPltLazyResolver() const {
+  return PltEntries.empty() ? nullptr : &PltEntries[0];
+}
+
+template <class ELFT>
+const typename MipsGOTParser<ELFT>::Entry *
+MipsGOTParser<ELFT>::getPltModulePointer() const {
+  return PltEntries.size() < 2 ? nullptr : &PltEntries[1];
+}
+
+template <class ELFT>
+typename MipsGOTParser<ELFT>::Entries
+MipsGOTParser<ELFT>::getPltEntries() const {
+  if (PltEntries.size() <= 2)
+    return Entries();
+  return PltEntries.slice(2, PltEntries.size() - 2);
+}
+
+template <class ELFT>
+uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const {
+  int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry);
+  return PltSec->sh_addr + Offset;
+}
+
+template <class ELFT>
+const typename MipsGOTParser<ELFT>::Elf_Sym *
+MipsGOTParser<ELFT>::getPltSym(const Entry *E) const {
+  int64_t Offset = std::distance(getPltEntries().data(), E);
+  if (PltRelSec->sh_type == ELF::SHT_REL) {
+    Elf_Rel_Range Rels = unwrapOrError(FileName, Obj.rels(*PltRelSec));
+    return unwrapOrError(FileName,
+                         Obj.getRelocationSymbol(Rels[Offset], PltSymTable));
+  } else {
+    Elf_Rela_Range Rels = unwrapOrError(FileName, Obj.relas(*PltRelSec));
+    return unwrapOrError(FileName,
+                         Obj.getRelocationSymbol(Rels[Offset], PltSymTable));
+  }
+}
+
+static const EnumEntry<unsigned> ElfMipsISAExtType[] = {
+  {"None",                    Mips::AFL_EXT_NONE},
+  {"Broadcom SB-1",           Mips::AFL_EXT_SB1},
+  {"Cavium Networks Octeon",  Mips::AFL_EXT_OCTEON},
+  {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2},
+  {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP},
+  {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3},
+  {"LSI R4010",               Mips::AFL_EXT_4010},
+  {"Loongson 2E",             Mips::AFL_EXT_LOONGSON_2E},
+  {"Loongson 2F",             Mips::AFL_EXT_LOONGSON_2F},
+  {"Loongson 3A",             Mips::AFL_EXT_LOONGSON_3A},
+  {"MIPS R4650",              Mips::AFL_EXT_4650},
+  {"MIPS R5900",              Mips::AFL_EXT_5900},
+  {"MIPS R10000",             Mips::AFL_EXT_10000},
+  {"NEC VR4100",              Mips::AFL_EXT_4100},
+  {"NEC VR4111/VR4181",       Mips::AFL_EXT_4111},
+  {"NEC VR4120",              Mips::AFL_EXT_4120},
+  {"NEC VR5400",              Mips::AFL_EXT_5400},
+  {"NEC VR5500",              Mips::AFL_EXT_5500},
+  {"RMI Xlr",                 Mips::AFL_EXT_XLR},
+  {"Toshiba R3900",           Mips::AFL_EXT_3900}
+};
+
+static const EnumEntry<unsigned> ElfMipsASEFlags[] = {
+  {"DSP",                Mips::AFL_ASE_DSP},
+  {"DSPR2",              Mips::AFL_ASE_DSPR2},
+  {"Enhanced VA Scheme", Mips::AFL_ASE_EVA},
+  {"MCU",                Mips::AFL_ASE_MCU},
+  {"MDMX",               Mips::AFL_ASE_MDMX},
+  {"MIPS-3D",            Mips::AFL_ASE_MIPS3D},
+  {"MT",                 Mips::AFL_ASE_MT},
+  {"SmartMIPS",          Mips::AFL_ASE_SMARTMIPS},
+  {"VZ",                 Mips::AFL_ASE_VIRT},
+  {"MSA",                Mips::AFL_ASE_MSA},
+  {"MIPS16",             Mips::AFL_ASE_MIPS16},
+  {"microMIPS",          Mips::AFL_ASE_MICROMIPS},
+  {"XPA",                Mips::AFL_ASE_XPA},
+  {"CRC",                Mips::AFL_ASE_CRC},
+  {"GINV",               Mips::AFL_ASE_GINV},
+};
+
+static const EnumEntry<unsigned> ElfMipsFpABIType[] = {
+  {"Hard or soft float",                  Mips::Val_GNU_MIPS_ABI_FP_ANY},
+  {"Hard float (double precision)",       Mips::Val_GNU_MIPS_ABI_FP_DOUBLE},
+  {"Hard float (single precision)",       Mips::Val_GNU_MIPS_ABI_FP_SINGLE},
+  {"Soft float",                          Mips::Val_GNU_MIPS_ABI_FP_SOFT},
+  {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)",
+   Mips::Val_GNU_MIPS_ABI_FP_OLD_64},
+  {"Hard float (32-bit CPU, Any FPU)",    Mips::Val_GNU_MIPS_ABI_FP_XX},
+  {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64},
+  {"Hard float compat (32-bit CPU, 64-bit FPU)",
+   Mips::Val_GNU_MIPS_ABI_FP_64A}
+};
+
+static const EnumEntry<unsigned> ElfMipsFlags1[] {
+  {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG},
+};
+
+static int getMipsRegisterSize(uint8_t Flag) {
+  switch (Flag) {
+  case Mips::AFL_REG_NONE:
+    return 0;
+  case Mips::AFL_REG_32:
+    return 32;
+  case Mips::AFL_REG_64:
+    return 64;
+  case Mips::AFL_REG_128:
+    return 128;
+  default:
+    return -1;
+  }
+}
+
+template <class ELFT>
+static void printMipsReginfoData(ScopedPrinter &W,
+                                 const Elf_Mips_RegInfo<ELFT> &Reginfo) {
+  W.printHex("GP", Reginfo.ri_gp_value);
+  W.printHex("General Mask", Reginfo.ri_gprmask);
+  W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]);
+  W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]);
+  W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]);
+  W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]);
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() {
+  const Elf_Shdr *RegInfoSec = findSectionByName(".reginfo");
+  if (!RegInfoSec) {
+    W.startLine() << "There is no .reginfo section in the file.\n";
+    return;
+  }
+
+  Expected<ArrayRef<uint8_t>> ContentsOrErr =
+      Obj.getSectionContents(*RegInfoSec);
+  if (!ContentsOrErr) {
+    this->reportUniqueWarning(
+        "unable to read the content of the .reginfo section (" +
+        describe(*RegInfoSec) + "): " + toString(ContentsOrErr.takeError()));
+    return;
+  }
+
+  if (ContentsOrErr->size() < sizeof(Elf_Mips_RegInfo<ELFT>)) {
+    this->reportUniqueWarning("the .reginfo section has an invalid size (0x" +
+                              Twine::utohexstr(ContentsOrErr->size()) + ")");
+    return;
+  }
+
+  DictScope GS(W, "MIPS RegInfo");
+  printMipsReginfoData(W, *reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(
+                              ContentsOrErr->data()));
+}
+
+template <class ELFT>
+static Expected<const Elf_Mips_Options<ELFT> *>
+readMipsOptions(const uint8_t *SecBegin, ArrayRef<uint8_t> &SecData,
+                bool &IsSupported) {
+  if (SecData.size() < sizeof(Elf_Mips_Options<ELFT>))
+    return createError("the .MIPS.options section has an invalid size (0x" +
+                       Twine::utohexstr(SecData.size()) + ")");
+
+  const Elf_Mips_Options<ELFT> *O =
+      reinterpret_cast<const Elf_Mips_Options<ELFT> *>(SecData.data());
+  const uint8_t Size = O->size;
+  if (Size > SecData.size()) {
+    const uint64_t Offset = SecData.data() - SecBegin;
+    const uint64_t SecSize = Offset + SecData.size();
+    return createError("a descriptor of size 0x" + Twine::utohexstr(Size) +
+                       " at offset 0x" + Twine::utohexstr(Offset) +
+                       " goes past the end of the .MIPS.options "
+                       "section of size 0x" +
+                       Twine::utohexstr(SecSize));
+  }
+
+  IsSupported = O->kind == ODK_REGINFO;
+  const size_t ExpectedSize =
+      sizeof(Elf_Mips_Options<ELFT>) + sizeof(Elf_Mips_RegInfo<ELFT>);
+
+  if (IsSupported)
+    if (Size < ExpectedSize)
+      return createError(
+          "a .MIPS.options entry of kind " +
+          Twine(getElfMipsOptionsOdkType(O->kind)) +
+          " has an invalid size (0x" + Twine::utohexstr(Size) +
+          "), the expected size is 0x" + Twine::utohexstr(ExpectedSize));
+
+  SecData = SecData.drop_front(Size);
+  return O;
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() {
+  const Elf_Shdr *MipsOpts = findSectionByName(".MIPS.options");
+  if (!MipsOpts) {
+    W.startLine() << "There is no .MIPS.options section in the file.\n";
+    return;
+  }
+
+  DictScope GS(W, "MIPS Options");
+
+  ArrayRef<uint8_t> Data =
+      unwrapOrError(ObjF.getFileName(), Obj.getSectionContents(*MipsOpts));
+  const uint8_t *const SecBegin = Data.begin();
+  while (!Data.empty()) {
+    bool IsSupported;
+    Expected<const Elf_Mips_Options<ELFT> *> OptsOrErr =
+        readMipsOptions<ELFT>(SecBegin, Data, IsSupported);
+    if (!OptsOrErr) {
+      reportUniqueWarning(OptsOrErr.takeError());
+      break;
+    }
+
+    unsigned Kind = (*OptsOrErr)->kind;
+    const char *Type = getElfMipsOptionsOdkType(Kind);
+    if (!IsSupported) {
+      W.startLine() << "Unsupported MIPS options tag: " << Type << " (" << Kind
+                    << ")\n";
+      continue;
+    }
+
+    DictScope GS(W, Type);
+    if (Kind == ODK_REGINFO)
+      printMipsReginfoData(W, (*OptsOrErr)->getRegInfo());
+    else
+      llvm_unreachable("unexpected .MIPS.options section descriptor kind");
+  }
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printStackMap() const {
+  const Elf_Shdr *StackMapSection = findSectionByName(".llvm_stackmaps");
+  if (!StackMapSection)
+    return;
+
+  auto Warn = [&](Error &&E) {
+    this->reportUniqueWarning("unable to read the stack map from " +
+                              describe(*StackMapSection) + ": " +
+                              toString(std::move(E)));
+  };
+
+  Expected<ArrayRef<uint8_t>> ContentOrErr =
+      Obj.getSectionContents(*StackMapSection);
+  if (!ContentOrErr) {
+    Warn(ContentOrErr.takeError());
+    return;
+  }
+
+  if (Error E = StackMapParser<ELFT::TargetEndianness>::validateHeader(
+          *ContentOrErr)) {
+    Warn(std::move(E));
+    return;
+  }
+
+  prettyPrintStackMap(W, StackMapParser<ELFT::TargetEndianness>(*ContentOrErr));
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printReloc(const Relocation<ELFT> &R, unsigned RelIndex,
+                                 const Elf_Shdr &Sec, const Elf_Shdr *SymTab) {
+  Expected<RelSymbol<ELFT>> Target = getRelocationTarget(R, SymTab);
+  if (!Target)
+    reportUniqueWarning("unable to print relocation " + Twine(RelIndex) +
+                        " in " + describe(Sec) + ": " +
+                        toString(Target.takeError()));
+  else
+    printRelRelaReloc(R, *Target);
+}
+
+static inline void printFields(formatted_raw_ostream &OS, StringRef Str1,
+                               StringRef Str2) {
+  OS.PadToColumn(2u);
+  OS << Str1;
+  OS.PadToColumn(37u);
+  OS << Str2 << "\n";
+  OS.flush();
+}
+
+template <class ELFT>
+static std::string getSectionHeadersNumString(const ELFFile<ELFT> &Obj,
+                                              StringRef FileName) {
+  const typename ELFT::Ehdr &ElfHeader = Obj.getHeader();
+  if (ElfHeader.e_shnum != 0)
+    return to_string(ElfHeader.e_shnum);
+
+  Expected<ArrayRef<typename ELFT::Shdr>> ArrOrErr = Obj.sections();
+  if (!ArrOrErr) {
+    // In this case we can ignore an error, because we have already reported a
+    // warning about the broken section header table earlier.
+    consumeError(ArrOrErr.takeError());
+    return "<?>";
+  }
+
+  if (ArrOrErr->empty())
+    return "0";
+  return "0 (" + to_string((*ArrOrErr)[0].sh_size) + ")";
+}
+
+template <class ELFT>
+static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> &Obj,
+                                                    StringRef FileName) {
+  const typename ELFT::Ehdr &ElfHeader = Obj.getHeader();
+  if (ElfHeader.e_shstrndx != SHN_XINDEX)
+    return to_string(ElfHeader.e_shstrndx);
+
+  Expected<ArrayRef<typename ELFT::Shdr>> ArrOrErr = Obj.sections();
+  if (!ArrOrErr) {
+    // In this case we can ignore an error, because we have already reported a
+    // warning about the broken section header table earlier.
+    consumeError(ArrOrErr.takeError());
+    return "<?>";
+  }
+
+  if (ArrOrErr->empty())
+    return "65535 (corrupt: out of range)";
+  return to_string(ElfHeader.e_shstrndx) + " (" +
+         to_string((*ArrOrErr)[0].sh_link) + ")";
+}
+
+static const EnumEntry<unsigned> *getObjectFileEnumEntry(unsigned Type) {
+  auto It = llvm::find_if(ElfObjectFileType, [&](const EnumEntry<unsigned> &E) {
+    return E.Value == Type;
+  });
+  if (It != makeArrayRef(ElfObjectFileType).end())
+    return It;
+  return nullptr;
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printFileHeaders() {
+  const Elf_Ehdr &e = this->Obj.getHeader();
+  OS << "ELF Header:\n";
+  OS << "  Magic:  ";
+  std::string Str;
+  for (int i = 0; i < ELF::EI_NIDENT; i++)
+    OS << format(" %02x", static_cast<int>(e.e_ident[i]));
+  OS << "\n";
+  Str = printEnum(e.e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass));
+  printFields(OS, "Class:", Str);
+  Str = printEnum(e.e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding));
+  printFields(OS, "Data:", Str);
+  OS.PadToColumn(2u);
+  OS << "Version:";
+  OS.PadToColumn(37u);
+  OS << to_hexString(e.e_ident[ELF::EI_VERSION]);
+  if (e.e_version == ELF::EV_CURRENT)
+    OS << " (current)";
+  OS << "\n";
+  Str = printEnum(e.e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI));
+  printFields(OS, "OS/ABI:", Str);
+  printFields(OS,
+              "ABI Version:", std::to_string(e.e_ident[ELF::EI_ABIVERSION]));
+
+  if (const EnumEntry<unsigned> *E = getObjectFileEnumEntry(e.e_type)) {
+    Str = E->AltName.str();
+  } else {
+    if (e.e_type >= ET_LOPROC)
+      Str = "Processor Specific: (" + to_hexString(e.e_type, false) + ")";
+    else if (e.e_type >= ET_LOOS)
+      Str = "OS Specific: (" + to_hexString(e.e_type, false) + ")";
+    else
+      Str = "<unknown>: " + to_hexString(e.e_type, false);
+  }
+  printFields(OS, "Type:", Str);
+
+  Str = printEnum(e.e_machine, makeArrayRef(ElfMachineType));
+  printFields(OS, "Machine:", Str);
+  Str = "0x" + to_hexString(e.e_version);
+  printFields(OS, "Version:", Str);
+  Str = "0x" + to_hexString(e.e_entry);
+  printFields(OS, "Entry point address:", Str);
+  Str = to_string(e.e_phoff) + " (bytes into file)";
+  printFields(OS, "Start of program headers:", Str);
+  Str = to_string(e.e_shoff) + " (bytes into file)";
+  printFields(OS, "Start of section headers:", Str);
+  std::string ElfFlags;
+  if (e.e_machine == EM_MIPS)
+    ElfFlags =
+        printFlags(e.e_flags, makeArrayRef(ElfHeaderMipsFlags),
+                   unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
+                   unsigned(ELF::EF_MIPS_MACH));
+  else if (e.e_machine == EM_RISCV)
+    ElfFlags = printFlags(e.e_flags, makeArrayRef(ElfHeaderRISCVFlags));
+  Str = "0x" + to_hexString(e.e_flags);
+  if (!ElfFlags.empty())
+    Str = Str + ", " + ElfFlags;
+  printFields(OS, "Flags:", Str);
+  Str = to_string(e.e_ehsize) + " (bytes)";
+  printFields(OS, "Size of this header:", Str);
+  Str = to_string(e.e_phentsize) + " (bytes)";
+  printFields(OS, "Size of program headers:", Str);
+  Str = to_string(e.e_phnum);
+  printFields(OS, "Number of program headers:", Str);
+  Str = to_string(e.e_shentsize) + " (bytes)";
+  printFields(OS, "Size of section headers:", Str);
+  Str = getSectionHeadersNumString(this->Obj, this->FileName);
+  printFields(OS, "Number of section headers:", Str);
+  Str = getSectionHeaderTableIndexString(this->Obj, this->FileName);
+  printFields(OS, "Section header string table index:", Str);
+}
+
+template <class ELFT> std::vector<GroupSection> ELFDumper<ELFT>::getGroups() {
+  auto GetSignature = [&](const Elf_Sym &Sym, unsigned SymNdx,
+                          const Elf_Shdr &Symtab) -> StringRef {
+    Expected<StringRef> StrTableOrErr = Obj.getStringTableForSymtab(Symtab);
+    if (!StrTableOrErr) {
+      reportUniqueWarning("unable to get the string table for " +
+                          describe(Symtab) + ": " +
+                          toString(StrTableOrErr.takeError()));
+      return "<?>";
+    }
+
+    StringRef Strings = *StrTableOrErr;
+    if (Sym.st_name >= Strings.size()) {
+      reportUniqueWarning("unable to get the name of the symbol with index " +
+                          Twine(SymNdx) + ": st_name (0x" +
+                          Twine::utohexstr(Sym.st_name) +
+                          ") is past the end of the string table of size 0x" +
+                          Twine::utohexstr(Strings.size()));
+      return "<?>";
+    }
+
+    return StrTableOrErr->data() + Sym.st_name;
+  };
+
+  std::vector<GroupSection> Ret;
+  uint64_t I = 0;
+  for (const Elf_Shdr &Sec : cantFail(Obj.sections())) {
+    ++I;
+    if (Sec.sh_type != ELF::SHT_GROUP)
+      continue;
+
+    StringRef Signature = "<?>";
+    if (Expected<const Elf_Shdr *> SymtabOrErr = Obj.getSection(Sec.sh_link)) {
+      if (Expected<const Elf_Sym *> SymOrErr =
+              Obj.template getEntry<Elf_Sym>(**SymtabOrErr, Sec.sh_info))
+        Signature = GetSignature(**SymOrErr, Sec.sh_info, **SymtabOrErr);
+      else
+        reportUniqueWarning("unable to get the signature symbol for " +
+                            describe(Sec) + ": " +
+                            toString(SymOrErr.takeError()));
+    } else {
+      reportUniqueWarning("unable to get the symbol table for " +
+                          describe(Sec) + ": " +
+                          toString(SymtabOrErr.takeError()));
+    }
+
+    ArrayRef<Elf_Word> Data;
+    if (Expected<ArrayRef<Elf_Word>> ContentsOrErr =
+            Obj.template getSectionContentsAsArray<Elf_Word>(Sec)) {
+      if (ContentsOrErr->empty())
+        reportUniqueWarning("unable to read the section group flag from the " +
+                            describe(Sec) + ": the section is empty");
+      else
+        Data = *ContentsOrErr;
+    } else {
+      reportUniqueWarning("unable to get the content of the " + describe(Sec) +
+                          ": " + toString(ContentsOrErr.takeError()));
+    }
+
+    Ret.push_back({getPrintableSectionName(Sec),
+                   maybeDemangle(Signature),
+                   Sec.sh_name,
+                   I - 1,
+                   Sec.sh_link,
+                   Sec.sh_info,
+                   Data.empty() ? Elf_Word(0) : Data[0],
+                   {}});
+
+    if (Data.empty())
+      continue;
+
+    std::vector<GroupMember> &GM = Ret.back().Members;
+    for (uint32_t Ndx : Data.slice(1)) {
+      if (Expected<const Elf_Shdr *> SecOrErr = Obj.getSection(Ndx)) {
+        GM.push_back({getPrintableSectionName(**SecOrErr), Ndx});
+      } else {
+        reportUniqueWarning("unable to get the section with index " +
+                            Twine(Ndx) + " when dumping the " + describe(Sec) +
+                            ": " + toString(SecOrErr.takeError()));
+        GM.push_back({"<?>", Ndx});
+      }
+    }
+  }
+  return Ret;
+}
+
+static DenseMap<uint64_t, const GroupSection *>
+mapSectionsToGroups(ArrayRef<GroupSection> Groups) {
+  DenseMap<uint64_t, const GroupSection *> Ret;
+  for (const GroupSection &G : Groups)
+    for (const GroupMember &GM : G.Members)
+      Ret.insert({GM.Index, &G});
+  return Ret;
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printGroupSections() {
+  std::vector<GroupSection> V = this->getGroups();
+  DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V);
+  for (const GroupSection &G : V) {
+    OS << "\n"
+       << getGroupType(G.Type) << " group section ["
+       << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature
+       << "] contains " << G.Members.size() << " sections:\n"
+       << "   [Index]    Name\n";
+    for (const GroupMember &GM : G.Members) {
+      const GroupSection *MainGroup = Map[GM.Index];
+      if (MainGroup != &G)
+        this->reportUniqueWarning(
+            "section with index " + Twine(GM.Index) +
+            ", included in the group section with index " +
+            Twine(MainGroup->Index) +
+            ", was also found in the group section with index " +
+            Twine(G.Index));
+      OS << "   [" << format_decimal(GM.Index, 5) << "]   " << GM.Name << "\n";
+    }
+  }
+
+  if (V.empty())
+    OS << "There are no section groups in this file.\n";
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printRelrReloc(const Elf_Relr &R) {
+  OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8)) << "\n";
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printRelRelaReloc(const Relocation<ELFT> &R,
+                                           const RelSymbol<ELFT> &RelSym) {
+  // First two fields are bit width dependent. The rest of them are fixed width.
+  unsigned Bias = ELFT::Is64Bits ? 8 : 0;
+  Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias};
+  unsigned Width = ELFT::Is64Bits ? 16 : 8;
+
+  Fields[0].Str = to_string(format_hex_no_prefix(R.Offset, Width));
+  Fields[1].Str = to_string(format_hex_no_prefix(R.Info, Width));
+
+  SmallString<32> RelocName;
+  this->Obj.getRelocationTypeName(R.Type, RelocName);
+  Fields[2].Str = RelocName.c_str();
+
+  if (RelSym.Sym)
+    Fields[3].Str =
+        to_string(format_hex_no_prefix(RelSym.Sym->getValue(), Width));
+
+  Fields[4].Str = std::string(RelSym.Name);
+  for (const Field &F : Fields)
+    printField(F);
+
+  std::string Addend;
+  if (Optional<int64_t> A = R.Addend) {
+    int64_t RelAddend = *A;
+    if (!RelSym.Name.empty()) {
+      if (RelAddend < 0) {
+        Addend = " - ";
+        RelAddend = std::abs(RelAddend);
+      } else {
+        Addend = " + ";
+      }
+    }
+    Addend += to_hexString(RelAddend, false);
+  }
+  OS << Addend << "\n";
+}
+
+template <class ELFT>
+static void printRelocHeaderFields(formatted_raw_ostream &OS, unsigned SType) {
+  bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA;
+  bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR;
+  if (ELFT::Is64Bits)
+    OS << "    ";
+  else
+    OS << " ";
+  if (IsRelr && opts::RawRelr)
+    OS << "Data  ";
+  else
+    OS << "Offset";
+  if (ELFT::Is64Bits)
+    OS << "             Info             Type"
+       << "               Symbol's Value  Symbol's Name";
+  else
+    OS << "     Info    Type                Sym. Value  Symbol's Name";
+  if (IsRela)
+    OS << " + Addend";
+  OS << "\n";
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printDynamicRelocHeader(unsigned Type, StringRef Name,
+                                                 const DynRegionInfo &Reg) {
+  uint64_t Offset = Reg.Addr - this->Obj.base();
+  OS << "\n'" << Name.str().c_str() << "' relocation section at offset 0x"
+     << to_hexString(Offset, false) << " contains " << Reg.Size << " bytes:\n";
+  printRelocHeaderFields<ELFT>(OS, Type);
+}
+
+template <class ELFT>
+static bool isRelocationSec(const typename ELFT::Shdr &Sec) {
+  return Sec.sh_type == ELF::SHT_REL || Sec.sh_type == ELF::SHT_RELA ||
+         Sec.sh_type == ELF::SHT_RELR || Sec.sh_type == ELF::SHT_ANDROID_REL ||
+         Sec.sh_type == ELF::SHT_ANDROID_RELA ||
+         Sec.sh_type == ELF::SHT_ANDROID_RELR;
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printRelocations() {
+  auto GetEntriesNum = [&](const Elf_Shdr &Sec) -> Expected<size_t> {
+    // Android's packed relocation section needs to be unpacked first
+    // to get the actual number of entries.
+    if (Sec.sh_type == ELF::SHT_ANDROID_REL ||
+        Sec.sh_type == ELF::SHT_ANDROID_RELA) {
+      Expected<std::vector<typename ELFT::Rela>> RelasOrErr =
+          this->Obj.android_relas(Sec);
+      if (!RelasOrErr)
+        return RelasOrErr.takeError();
+      return RelasOrErr->size();
+    }
+
+    if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR ||
+                           Sec.sh_type == ELF::SHT_ANDROID_RELR)) {
+      Expected<Elf_Relr_Range> RelrsOrErr = this->Obj.relrs(Sec);
+      if (!RelrsOrErr)
+        return RelrsOrErr.takeError();
+      return this->Obj.decode_relrs(*RelrsOrErr).size();
+    }
+
+    return Sec.getEntityCount();
+  };
+
+  bool HasRelocSections = false;
+  for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) {
+    if (!isRelocationSec<ELFT>(Sec))
+      continue;
+    HasRelocSections = true;
+
+    std::string EntriesNum = "<?>";
+    if (Expected<size_t> NumOrErr = GetEntriesNum(Sec))
+      EntriesNum = std::to_string(*NumOrErr);
+    else
+      this->reportUniqueWarning("unable to get the number of relocations in " +
+                                this->describe(Sec) + ": " +
+                                toString(NumOrErr.takeError()));
+
+    uintX_t Offset = Sec.sh_offset;
+    StringRef Name = this->getPrintableSectionName(Sec);
+    OS << "\nRelocation section '" << Name << "' at offset 0x"
+       << to_hexString(Offset, false) << " contains " << EntriesNum
+       << " entries:\n";
+    printRelocHeaderFields<ELFT>(OS, Sec.sh_type);
+    this->printRelocationsHelper(Sec);
+  }
+  if (!HasRelocSections)
+    OS << "\nThere are no relocations in this file.\n";
+}
+
+// Print the offset of a particular section from anyone of the ranges:
+// [SHT_LOOS, SHT_HIOS], [SHT_LOPROC, SHT_HIPROC], [SHT_LOUSER, SHT_HIUSER].
+// If 'Type' does not fall within any of those ranges, then a string is
+// returned as '<unknown>' followed by the type value.
+static std::string getSectionTypeOffsetString(unsigned Type) {
+  if (Type >= SHT_LOOS && Type <= SHT_HIOS)
+    return "LOOS+0x" + to_hexString(Type - SHT_LOOS);
+  else if (Type >= SHT_LOPROC && Type <= SHT_HIPROC)
+    return "LOPROC+0x" + to_hexString(Type - SHT_LOPROC);
+  else if (Type >= SHT_LOUSER && Type <= SHT_HIUSER)
+    return "LOUSER+0x" + to_hexString(Type - SHT_LOUSER);
+  return "0x" + to_hexString(Type) + ": <unknown>";
+}
+
+static std::string getSectionTypeString(unsigned Machine, unsigned Type) {
+  StringRef Name = getELFSectionTypeName(Machine, Type);
+
+  // Handle SHT_GNU_* type names.
+  if (Name.startswith("SHT_GNU_")) {
+    if (Name == "SHT_GNU_HASH")
+      return "GNU_HASH";
+    // E.g. SHT_GNU_verneed -> VERNEED.
+    return Name.drop_front(8).upper();
+  }
+
+  if (Name == "SHT_SYMTAB_SHNDX")
+    return "SYMTAB SECTION INDICES";
+
+  if (Name.startswith("SHT_"))
+    return Name.drop_front(4).str();
+  return getSectionTypeOffsetString(Type);
+}
+
+static void printSectionDescription(formatted_raw_ostream &OS,
+                                    unsigned EMachine) {
+  OS << "Key to Flags:\n";
+  OS << "  W (write), A (alloc), X (execute), M (merge), S (strings), I "
+        "(info),\n";
+  OS << "  L (link order), O (extra OS processing required), G (group), T "
+        "(TLS),\n";
+  OS << "  C (compressed), x (unknown), o (OS specific), E (exclude),\n";
+
+  if (EMachine == EM_X86_64)
+    OS << "  l (large), ";
+  else if (EMachine == EM_ARM)
+    OS << "  y (purecode), ";
+  else
+    OS << "  ";
+
+  OS << "p (processor specific)\n";
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printSectionHeaders() {
+  unsigned Bias = ELFT::Is64Bits ? 0 : 8;
+  ArrayRef<Elf_Shdr> Sections = cantFail(this->Obj.sections());
+  OS << "There are " << to_string(Sections.size())
+     << " section headers, starting at offset "
+     << "0x" << to_hexString(this->Obj.getHeader().e_shoff, false) << ":\n\n";
+  OS << "Section Headers:\n";
+  Field Fields[11] = {
+      {"[Nr]", 2},        {"Name", 7},        {"Type", 25},
+      {"Address", 41},    {"Off", 58 - Bias}, {"Size", 65 - Bias},
+      {"ES", 72 - Bias},  {"Flg", 75 - Bias}, {"Lk", 79 - Bias},
+      {"Inf", 82 - Bias}, {"Al", 86 - Bias}};
+  for (const Field &F : Fields)
+    printField(F);
+  OS << "\n";
+
+  StringRef SecStrTable;
+  if (Expected<StringRef> SecStrTableOrErr =
+          this->Obj.getSectionStringTable(Sections, this->WarningHandler))
+    SecStrTable = *SecStrTableOrErr;
+  else
+    this->reportUniqueWarning(SecStrTableOrErr.takeError());
+
+  size_t SectionIndex = 0;
+  for (const Elf_Shdr &Sec : Sections) {
+    Fields[0].Str = to_string(SectionIndex);
+    if (SecStrTable.empty())
+      Fields[1].Str = "<no-strings>";
+    else
+      Fields[1].Str = std::string(unwrapOrError<StringRef>(
+          this->FileName, this->Obj.getSectionName(Sec, SecStrTable)));
+    Fields[2].Str =
+        getSectionTypeString(this->Obj.getHeader().e_machine, Sec.sh_type);
+    Fields[3].Str =
+        to_string(format_hex_no_prefix(Sec.sh_addr, ELFT::Is64Bits ? 16 : 8));
+    Fields[4].Str = to_string(format_hex_no_prefix(Sec.sh_offset, 6));
+    Fields[5].Str = to_string(format_hex_no_prefix(Sec.sh_size, 6));
+    Fields[6].Str = to_string(format_hex_no_prefix(Sec.sh_entsize, 2));
+    Fields[7].Str = getGNUFlags(this->Obj.getHeader().e_machine, Sec.sh_flags);
+    Fields[8].Str = to_string(Sec.sh_link);
+    Fields[9].Str = to_string(Sec.sh_info);
+    Fields[10].Str = to_string(Sec.sh_addralign);
+
+    OS.PadToColumn(Fields[0].Column);
+    OS << "[" << right_justify(Fields[0].Str, 2) << "]";
+    for (int i = 1; i < 7; i++)
+      printField(Fields[i]);
+    OS.PadToColumn(Fields[7].Column);
+    OS << right_justify(Fields[7].Str, 3);
+    OS.PadToColumn(Fields[8].Column);
+    OS << right_justify(Fields[8].Str, 2);
+    OS.PadToColumn(Fields[9].Column);
+    OS << right_justify(Fields[9].Str, 3);
+    OS.PadToColumn(Fields[10].Column);
+    OS << right_justify(Fields[10].Str, 2);
+    OS << "\n";
+    ++SectionIndex;
+  }
+  printSectionDescription(OS, this->Obj.getHeader().e_machine);
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printSymtabMessage(const Elf_Shdr *Symtab,
+                                            size_t Entries,
+                                            bool NonVisibilityBitsUsed) const {
+  StringRef Name;
+  if (Symtab)
+    Name = this->getPrintableSectionName(*Symtab);
+  if (!Name.empty())
+    OS << "\nSymbol table '" << Name << "'";
+  else
+    OS << "\nSymbol table for image";
+  OS << " contains " << Entries << " entries:\n";
+
+  if (ELFT::Is64Bits)
+    OS << "   Num:    Value          Size Type    Bind   Vis";
+  else
+    OS << "   Num:    Value  Size Type    Bind   Vis";
+
+  if (NonVisibilityBitsUsed)
+    OS << "             ";
+  OS << "       Ndx Name\n";
+}
+
+template <class ELFT>
+std::string
+GNUELFDumper<ELFT>::getSymbolSectionNdx(const Elf_Sym &Symbol,
+                                        unsigned SymIndex,
+                                        DataRegion<Elf_Word> ShndxTable) const {
+  unsigned SectionIndex = Symbol.st_shndx;
+  switch (SectionIndex) {
+  case ELF::SHN_UNDEF:
+    return "UND";
+  case ELF::SHN_ABS:
+    return "ABS";
+  case ELF::SHN_COMMON:
+    return "COM";
+  case ELF::SHN_XINDEX: {
+    Expected<uint32_t> IndexOrErr =
+        object::getExtendedSymbolTableIndex<ELFT>(Symbol, SymIndex, ShndxTable);
+    if (!IndexOrErr) {
+      assert(Symbol.st_shndx == SHN_XINDEX &&
+             "getExtendedSymbolTableIndex should only fail due to an invalid "
+             "SHT_SYMTAB_SHNDX table/reference");
+      this->reportUniqueWarning(IndexOrErr.takeError());
+      return "RSV[0xffff]";
+    }
+    return to_string(format_decimal(*IndexOrErr, 3));
+  }
+  default:
+    // Find if:
+    // Processor specific
+    if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC)
+      return std::string("PRC[0x") +
+             to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
+    // OS specific
+    if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS)
+      return std::string("OS[0x") +
+             to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
+    // Architecture reserved:
+    if (SectionIndex >= ELF::SHN_LORESERVE &&
+        SectionIndex <= ELF::SHN_HIRESERVE)
+      return std::string("RSV[0x") +
+             to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
+    // A normal section with an index
+    return to_string(format_decimal(SectionIndex, 3));
+  }
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
+                                     DataRegion<Elf_Word> ShndxTable,
+                                     Optional<StringRef> StrTable,
+                                     bool IsDynamic,
+                                     bool NonVisibilityBitsUsed) const {
+  unsigned Bias = ELFT::Is64Bits ? 8 : 0;
+  Field Fields[8] = {0,         8,         17 + Bias, 23 + Bias,
+                     31 + Bias, 38 + Bias, 48 + Bias, 51 + Bias};
+  Fields[0].Str = to_string(format_decimal(SymIndex, 6)) + ":";
+  Fields[1].Str =
+      to_string(format_hex_no_prefix(Symbol.st_value, ELFT::Is64Bits ? 16 : 8));
+  Fields[2].Str = to_string(format_decimal(Symbol.st_size, 5));
+
+  unsigned char SymbolType = Symbol.getType();
+  if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU &&
+      SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
+    Fields[3].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes));
+  else
+    Fields[3].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes));
+
+  Fields[4].Str =
+      printEnum(Symbol.getBinding(), makeArrayRef(ElfSymbolBindings));
+  Fields[5].Str =
+      printEnum(Symbol.getVisibility(), makeArrayRef(ElfSymbolVisibilities));
+
+  if (Symbol.st_other & ~0x3) {
+    if (this->Obj.getHeader().e_machine == ELF::EM_AARCH64) {
+      uint8_t Other = Symbol.st_other & ~0x3;
+      if (Other & STO_AARCH64_VARIANT_PCS) {
+        Other &= ~STO_AARCH64_VARIANT_PCS;
+        Fields[5].Str += " [VARIANT_PCS";
+        if (Other != 0)
+          Fields[5].Str.append(" | " + to_hexString(Other, false));
+        Fields[5].Str.append("]");
+      }
+    } else {
+      Fields[5].Str +=
+          " [<other: " + to_string(format_hex(Symbol.st_other, 2)) + ">]";
+    }
+  }
+
+  Fields[6].Column += NonVisibilityBitsUsed ? 13 : 0;
+  Fields[6].Str = getSymbolSectionNdx(Symbol, SymIndex, ShndxTable);
+
+  Fields[7].Str = this->getFullSymbolName(Symbol, SymIndex, ShndxTable,
+                                          StrTable, IsDynamic);
+  for (const Field &Entry : Fields)
+    printField(Entry);
+  OS << "\n";
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printHashedSymbol(const Elf_Sym *Symbol,
+                                           unsigned SymIndex,
+                                           DataRegion<Elf_Word> ShndxTable,
+                                           StringRef StrTable,
+                                           uint32_t Bucket) {
+  unsigned Bias = ELFT::Is64Bits ? 8 : 0;
+  Field Fields[9] = {0,         6,         11,        20 + Bias, 25 + Bias,
+                     34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias};
+  Fields[0].Str = to_string(format_decimal(SymIndex, 5));
+  Fields[1].Str = to_string(format_decimal(Bucket, 3)) + ":";
+
+  Fields[2].Str = to_string(
+      format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8));
+  Fields[3].Str = to_string(format_decimal(Symbol->st_size, 5));
+
+  unsigned char SymbolType = Symbol->getType();
+  if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU &&
+      SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
+    Fields[4].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes));
+  else
+    Fields[4].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes));
+
+  Fields[5].Str =
+      printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
+  Fields[6].Str =
+      printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities));
+  Fields[7].Str = getSymbolSectionNdx(*Symbol, SymIndex, ShndxTable);
+  Fields[8].Str =
+      this->getFullSymbolName(*Symbol, SymIndex, ShndxTable, StrTable, true);
+
+  for (const Field &Entry : Fields)
+    printField(Entry);
+  OS << "\n";
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printSymbols(bool PrintSymbols,
+                                      bool PrintDynamicSymbols) {
+  if (!PrintSymbols && !PrintDynamicSymbols)
+    return;
+  // GNU readelf prints both the .dynsym and .symtab with --symbols.
+  this->printSymbolsHelper(true);
+  if (PrintSymbols)
+    this->printSymbolsHelper(false);
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printHashTableSymbols(const Elf_Hash &SysVHash) {
+  if (this->DynamicStringTable.empty())
+    return;
+
+  if (ELFT::Is64Bits)
+    OS << "  Num Buc:    Value          Size   Type   Bind Vis      Ndx Name";
+  else
+    OS << "  Num Buc:    Value  Size   Type   Bind Vis      Ndx Name";
+  OS << "\n";
+
+  Elf_Sym_Range DynSyms = this->dynamic_symbols();
+  const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0];
+  if (!FirstSym) {
+    this->reportUniqueWarning(
+        Twine("unable to print symbols for the .hash table: the "
+              "dynamic symbol table ") +
+        (this->DynSymRegion ? "is empty" : "was not found"));
+    return;
+  }
+
+  DataRegion<Elf_Word> ShndxTable(
+      (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
+  auto Buckets = SysVHash.buckets();
+  auto Chains = SysVHash.chains();
+  for (uint32_t Buc = 0; Buc < SysVHash.nbucket; Buc++) {
+    if (Buckets[Buc] == ELF::STN_UNDEF)
+      continue;
+    std::vector<bool> Visited(SysVHash.nchain);
+    for (uint32_t Ch = Buckets[Buc]; Ch < SysVHash.nchain; Ch = Chains[Ch]) {
+      if (Ch == ELF::STN_UNDEF)
+        break;
+
+      if (Visited[Ch]) {
+        this->reportUniqueWarning(".hash section is invalid: bucket " +
+                                  Twine(Ch) +
+                                  ": a cycle was detected in the linked chain");
+        break;
+      }
+
+      printHashedSymbol(FirstSym + Ch, Ch, ShndxTable, this->DynamicStringTable,
+                        Buc);
+      Visited[Ch] = true;
+    }
+  }
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printGnuHashTableSymbols(const Elf_GnuHash &GnuHash) {
+  if (this->DynamicStringTable.empty())
+    return;
+
+  Elf_Sym_Range DynSyms = this->dynamic_symbols();
+  const Elf_Sym *FirstSym = DynSyms.empty() ? nullptr : &DynSyms[0];
+  if (!FirstSym) {
+    this->reportUniqueWarning(
+        Twine("unable to print symbols for the .gnu.hash table: the "
+              "dynamic symbol table ") +
+        (this->DynSymRegion ? "is empty" : "was not found"));
+    return;
+  }
+
+  auto GetSymbol = [&](uint64_t SymIndex,
+                       uint64_t SymsTotal) -> const Elf_Sym * {
+    if (SymIndex >= SymsTotal) {
+      this->reportUniqueWarning(
+          "unable to print hashed symbol with index " + Twine(SymIndex) +
+          ", which is greater than or equal to the number of dynamic symbols "
+          "(" +
+          Twine::utohexstr(SymsTotal) + ")");
+      return nullptr;
+    }
+    return FirstSym + SymIndex;
+  };
+
+  Expected<ArrayRef<Elf_Word>> ValuesOrErr =
+      getGnuHashTableChains<ELFT>(this->DynSymRegion, &GnuHash);
+  ArrayRef<Elf_Word> Values;
+  if (!ValuesOrErr)
+    this->reportUniqueWarning("unable to get hash values for the SHT_GNU_HASH "
+                              "section: " +
+                              toString(ValuesOrErr.takeError()));
+  else
+    Values = *ValuesOrErr;
+
+  DataRegion<Elf_Word> ShndxTable(
+      (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
+  ArrayRef<Elf_Word> Buckets = GnuHash.buckets();
+  for (uint32_t Buc = 0; Buc < GnuHash.nbuckets; Buc++) {
+    if (Buckets[Buc] == ELF::STN_UNDEF)
+      continue;
+    uint32_t Index = Buckets[Buc];
+    // Print whole chain.
+    while (true) {
+      uint32_t SymIndex = Index++;
+      if (const Elf_Sym *Sym = GetSymbol(SymIndex, DynSyms.size()))
+        printHashedSymbol(Sym, SymIndex, ShndxTable, this->DynamicStringTable,
+                          Buc);
+      else
+        break;
+
+      if (SymIndex < GnuHash.symndx) {
+        this->reportUniqueWarning(
+            "unable to read the hash value for symbol with index " +
+            Twine(SymIndex) +
+            ", which is less than the index of the first hashed symbol (" +
+            Twine(GnuHash.symndx) + ")");
+        break;
+      }
+
+       // Chain ends at symbol with stopper bit.
+      if ((Values[SymIndex - GnuHash.symndx] & 1) == 1)
+        break;
+    }
+  }
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printHashSymbols() {
+  if (this->HashTable) {
+    OS << "\n Symbol table of .hash for image:\n";
+    if (Error E = checkHashTable<ELFT>(*this, this->HashTable))
+      this->reportUniqueWarning(std::move(E));
+    else
+      printHashTableSymbols(*this->HashTable);
+  }
+
+  // Try printing the .gnu.hash table.
+  if (this->GnuHashTable) {
+    OS << "\n Symbol table of .gnu.hash for image:\n";
+    if (ELFT::Is64Bits)
+      OS << "  Num Buc:    Value          Size   Type   Bind Vis      Ndx Name";
+    else
+      OS << "  Num Buc:    Value  Size   Type   Bind Vis      Ndx Name";
+    OS << "\n";
+
+    if (Error E = checkGNUHashTable<ELFT>(this->Obj, this->GnuHashTable))
+      this->reportUniqueWarning(std::move(E));
+    else
+      printGnuHashTableSymbols(*this->GnuHashTable);
+  }
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printSectionDetails() {
+  ArrayRef<Elf_Shdr> Sections = cantFail(this->Obj.sections());
+  OS << "There are " << to_string(Sections.size())
+     << " section headers, starting at offset "
+     << "0x" << to_hexString(this->Obj.getHeader().e_shoff, false) << ":\n\n";
+
+  OS << "Section Headers:\n";
+
+  auto PrintFields = [&](ArrayRef<Field> V) {
+    for (const Field &F : V)
+      printField(F);
+    OS << "\n";
+  };
+
+  PrintFields({{"[Nr]", 2}, {"Name", 7}});
+
+  constexpr bool Is64 = ELFT::Is64Bits;
+  PrintFields({{"Type", 7},
+               {Is64 ? "Address" : "Addr", 23},
+               {"Off", Is64 ? 40 : 32},
+               {"Size", Is64 ? 47 : 39},
+               {"ES", Is64 ? 54 : 46},
+               {"Lk", Is64 ? 59 : 51},
+               {"Inf", Is64 ? 62 : 54},
+               {"Al", Is64 ? 66 : 57}});
+  PrintFields({{"Flags", 7}});
+
+  StringRef SecStrTable;
+  if (Expected<StringRef> SecStrTableOrErr =
+          this->Obj.getSectionStringTable(Sections, this->WarningHandler))
+    SecStrTable = *SecStrTableOrErr;
+  else
+    this->reportUniqueWarning(SecStrTableOrErr.takeError());
+
+  size_t SectionIndex = 0;
+  const unsigned AddrSize = Is64 ? 16 : 8;
+  for (const Elf_Shdr &S : Sections) {
+    StringRef Name = "<?>";
+    if (Expected<StringRef> NameOrErr =
+            this->Obj.getSectionName(S, SecStrTable))
+      Name = *NameOrErr;
+    else
+      this->reportUniqueWarning(NameOrErr.takeError());
+
+    OS.PadToColumn(2);
+    OS << "[" << right_justify(to_string(SectionIndex), 2) << "]";
+    PrintFields({{Name, 7}});
+    PrintFields(
+        {{getSectionTypeString(this->Obj.getHeader().e_machine, S.sh_type), 7},
+         {to_string(format_hex_no_prefix(S.sh_addr, AddrSize)), 23},
+         {to_string(format_hex_no_prefix(S.sh_offset, 6)), Is64 ? 39 : 32},
+         {to_string(format_hex_no_prefix(S.sh_size, 6)), Is64 ? 47 : 39},
+         {to_string(format_hex_no_prefix(S.sh_entsize, 2)), Is64 ? 54 : 46},
+         {to_string(S.sh_link), Is64 ? 59 : 51},
+         {to_string(S.sh_info), Is64 ? 63 : 55},
+         {to_string(S.sh_addralign), Is64 ? 66 : 58}});
+
+    OS.PadToColumn(7);
+    OS << "[" << to_string(format_hex_no_prefix(S.sh_flags, AddrSize)) << "]: ";
+
+    DenseMap<unsigned, StringRef> FlagToName = {
+        {SHF_WRITE, "WRITE"},           {SHF_ALLOC, "ALLOC"},
+        {SHF_EXECINSTR, "EXEC"},        {SHF_MERGE, "MERGE"},
+        {SHF_STRINGS, "STRINGS"},       {SHF_INFO_LINK, "INFO LINK"},
+        {SHF_LINK_ORDER, "LINK ORDER"}, {SHF_OS_NONCONFORMING, "OS NONCONF"},
+        {SHF_GROUP, "GROUP"},           {SHF_TLS, "TLS"},
+        {SHF_COMPRESSED, "COMPRESSED"}, {SHF_EXCLUDE, "EXCLUDE"}};
+
+    uint64_t Flags = S.sh_flags;
+    uint64_t UnknownFlags = 0;
+    bool NeedsComma = false;
+    while (Flags) {
+      // Take the least significant bit as a flag.
+      uint64_t Flag = Flags & -Flags;
+      Flags -= Flag;
+
+      auto It = FlagToName.find(Flag);
+      if (It != FlagToName.end()) {
+        if (NeedsComma)
+          OS << ", ";
+        NeedsComma = true;
+        OS << It->second;
+      } else {
+        UnknownFlags |= Flag;
+      }
+    }
+
+    auto PrintUnknownFlags = [&](uint64_t Mask, StringRef Name) {
+      uint64_t FlagsToPrint = UnknownFlags & Mask;
+      if (!FlagsToPrint)
+        return;
+
+      if (NeedsComma)
+        OS << ", ";
+      OS << Name << " ("
+         << to_string(format_hex_no_prefix(FlagsToPrint, AddrSize)) << ")";
+      UnknownFlags &= ~Mask;
+      NeedsComma = true;
+    };
+
+    PrintUnknownFlags(SHF_MASKOS, "OS");
+    PrintUnknownFlags(SHF_MASKPROC, "PROC");
+    PrintUnknownFlags(uint64_t(-1), "UNKNOWN");
+
+    OS << "\n";
+    ++SectionIndex;
+  }
+}
+
+static inline std::string printPhdrFlags(unsigned Flag) {
+  std::string Str;
+  Str = (Flag & PF_R) ? "R" : " ";
+  Str += (Flag & PF_W) ? "W" : " ";
+  Str += (Flag & PF_X) ? "E" : " ";
+  return Str;
+}
+
+template <class ELFT>
+static bool checkTLSSections(const typename ELFT::Phdr &Phdr,
+                             const typename ELFT::Shdr &Sec) {
+  if (Sec.sh_flags & ELF::SHF_TLS) {
+    // .tbss must only be shown in the PT_TLS segment.
+    if (Sec.sh_type == ELF::SHT_NOBITS)
+      return Phdr.p_type == ELF::PT_TLS;
+
+    // SHF_TLS sections are only shown in PT_TLS, PT_LOAD or PT_GNU_RELRO
+    // segments.
+    return (Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) ||
+           (Phdr.p_type == ELF::PT_GNU_RELRO);
+  }
+
+  // PT_TLS must only have SHF_TLS sections.
+  return Phdr.p_type != ELF::PT_TLS;
+}
+
+template <class ELFT>
+static bool checkOffsets(const typename ELFT::Phdr &Phdr,
+                         const typename ELFT::Shdr &Sec) {
+  // SHT_NOBITS sections don't need to have an offset inside the segment.
+  if (Sec.sh_type == ELF::SHT_NOBITS)
+    return true;
+
+  if (Sec.sh_offset < Phdr.p_offset)
+    return false;
+
+  // Only non-empty sections can be at the end of a segment.
+  if (Sec.sh_size == 0)
+    return (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz);
+  return Sec.sh_offset + Sec.sh_size <= Phdr.p_offset + Phdr.p_filesz;
+}
+
+// Check that an allocatable section belongs to a virtual address
+// space of a segment.
+template <class ELFT>
+static bool checkVMA(const typename ELFT::Phdr &Phdr,
+                     const typename ELFT::Shdr &Sec) {
+  if (!(Sec.sh_flags & ELF::SHF_ALLOC))
+    return true;
+
+  if (Sec.sh_addr < Phdr.p_vaddr)
+    return false;
+
+  bool IsTbss =
+      (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0);
+  // .tbss is special, it only has memory in PT_TLS and has NOBITS properties.
+  bool IsTbssInNonTLS = IsTbss && Phdr.p_type != ELF::PT_TLS;
+  // Only non-empty sections can be at the end of a segment.
+  if (Sec.sh_size == 0 || IsTbssInNonTLS)
+    return Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz;
+  return Sec.sh_addr + Sec.sh_size <= Phdr.p_vaddr + Phdr.p_memsz;
+}
+
+template <class ELFT>
+static bool checkPTDynamic(const typename ELFT::Phdr &Phdr,
+                           const typename ELFT::Shdr &Sec) {
+  if (Phdr.p_type != ELF::PT_DYNAMIC || Phdr.p_memsz == 0 || Sec.sh_size != 0)
+    return true;
+
+  // We get here when we have an empty section. Only non-empty sections can be
+  // at the start or at the end of PT_DYNAMIC.
+  // Is section within the phdr both based on offset and VMA?
+  bool CheckOffset = (Sec.sh_type == ELF::SHT_NOBITS) ||
+                     (Sec.sh_offset > Phdr.p_offset &&
+                      Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz);
+  bool CheckVA = !(Sec.sh_flags & ELF::SHF_ALLOC) ||
+                 (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz);
+  return CheckOffset && CheckVA;
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printProgramHeaders(
+    bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) {
+  if (PrintProgramHeaders)
+    printProgramHeaders();
+
+  // Display the section mapping along with the program headers, unless
+  // -section-mapping is explicitly set to false.
+  if (PrintSectionMapping != cl::BOU_FALSE)
+    printSectionMapping();
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printProgramHeaders() {
+  unsigned Bias = ELFT::Is64Bits ? 8 : 0;
+  const Elf_Ehdr &Header = this->Obj.getHeader();
+  Field Fields[8] = {2,         17,        26,        37 + Bias,
+                     48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias};
+  OS << "\nElf file type is "
+     << printEnum(Header.e_type, makeArrayRef(ElfObjectFileType)) << "\n"
+     << "Entry point " << format_hex(Header.e_entry, 3) << "\n"
+     << "There are " << Header.e_phnum << " program headers,"
+     << " starting at offset " << Header.e_phoff << "\n\n"
+     << "Program Headers:\n";
+  if (ELFT::Is64Bits)
+    OS << "  Type           Offset   VirtAddr           PhysAddr         "
+       << "  FileSiz  MemSiz   Flg Align\n";
+  else
+    OS << "  Type           Offset   VirtAddr   PhysAddr   FileSiz "
+       << "MemSiz  Flg Align\n";
+
+  unsigned Width = ELFT::Is64Bits ? 18 : 10;
+  unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7;
+
+  Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers();
+  if (!PhdrsOrErr) {
+    this->reportUniqueWarning("unable to dump program headers: " +
+                              toString(PhdrsOrErr.takeError()));
+    return;
+  }
+
+  for (const Elf_Phdr &Phdr : *PhdrsOrErr) {
+    Fields[0].Str = getGNUPtType(Header.e_machine, Phdr.p_type);
+    Fields[1].Str = to_string(format_hex(Phdr.p_offset, 8));
+    Fields[2].Str = to_string(format_hex(Phdr.p_vaddr, Width));
+    Fields[3].Str = to_string(format_hex(Phdr.p_paddr, Width));
+    Fields[4].Str = to_string(format_hex(Phdr.p_filesz, SizeWidth));
+    Fields[5].Str = to_string(format_hex(Phdr.p_memsz, SizeWidth));
+    Fields[6].Str = printPhdrFlags(Phdr.p_flags);
+    Fields[7].Str = to_string(format_hex(Phdr.p_align, 1));
+    for (const Field &F : Fields)
+      printField(F);
+    if (Phdr.p_type == ELF::PT_INTERP) {
+      OS << "\n";
+      auto ReportBadInterp = [&](const Twine &Msg) {
+        this->reportUniqueWarning(
+            "unable to read program interpreter name at offset 0x" +
+            Twine::utohexstr(Phdr.p_offset) + ": " + Msg);
+      };
+
+      if (Phdr.p_offset >= this->Obj.getBufSize()) {
+        ReportBadInterp("it goes past the end of the file (0x" +
+                        Twine::utohexstr(this->Obj.getBufSize()) + ")");
+        continue;
+      }
+
+      const char *Data =
+          reinterpret_cast<const char *>(this->Obj.base()) + Phdr.p_offset;
+      size_t MaxSize = this->Obj.getBufSize() - Phdr.p_offset;
+      size_t Len = strnlen(Data, MaxSize);
+      if (Len == MaxSize) {
+        ReportBadInterp("it is not null-terminated");
+        continue;
+      }
+
+      OS << "      [Requesting program interpreter: ";
+      OS << StringRef(Data, Len) << "]";
+    }
+    OS << "\n";
+  }
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printSectionMapping() {
+  OS << "\n Section to Segment mapping:\n  Segment Sections...\n";
+  DenseSet<const Elf_Shdr *> BelongsToSegment;
+  int Phnum = 0;
+
+  Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers();
+  if (!PhdrsOrErr) {
+    this->reportUniqueWarning(
+        "can't read program headers to build section to segment mapping: " +
+        toString(PhdrsOrErr.takeError()));
+    return;
+  }
+
+  for (const Elf_Phdr &Phdr : *PhdrsOrErr) {
+    std::string Sections;
+    OS << format("   %2.2d     ", Phnum++);
+    // Check if each section is in a segment and then print mapping.
+    for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) {
+      if (Sec.sh_type == ELF::SHT_NULL)
+        continue;
+
+      // readelf additionally makes sure it does not print zero sized sections
+      // at end of segments and for PT_DYNAMIC both start and end of section
+      // .tbss must only be shown in PT_TLS section.
+      if (checkTLSSections<ELFT>(Phdr, Sec) && checkOffsets<ELFT>(Phdr, Sec) &&
+          checkVMA<ELFT>(Phdr, Sec) && checkPTDynamic<ELFT>(Phdr, Sec)) {
+        Sections +=
+            unwrapOrError(this->FileName, this->Obj.getSectionName(Sec)).str() +
+            " ";
+        BelongsToSegment.insert(&Sec);
+      }
+    }
+    OS << Sections << "\n";
+    OS.flush();
+  }
+
+  // Display sections that do not belong to a segment.
+  std::string Sections;
+  for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) {
+    if (BelongsToSegment.find(&Sec) == BelongsToSegment.end())
+      Sections +=
+          unwrapOrError(this->FileName, this->Obj.getSectionName(Sec)).str() +
+          ' ';
+  }
+  if (!Sections.empty()) {
+    OS << "   None  " << Sections << '\n';
+    OS.flush();
+  }
+}
+
+namespace {
+
+template <class ELFT>
+RelSymbol<ELFT> getSymbolForReloc(const ELFDumper<ELFT> &Dumper,
+                                  const Relocation<ELFT> &Reloc) {
+  using Elf_Sym = typename ELFT::Sym;
+  auto WarnAndReturn = [&](const Elf_Sym *Sym,
+                           const Twine &Reason) -> RelSymbol<ELFT> {
+    Dumper.reportUniqueWarning(
+        "unable to get name of the dynamic symbol with index " +
+        Twine(Reloc.Symbol) + ": " + Reason);
+    return {Sym, "<corrupt>"};
+  };
+
+  ArrayRef<Elf_Sym> Symbols = Dumper.dynamic_symbols();
+  const Elf_Sym *FirstSym = Symbols.begin();
+  if (!FirstSym)
+    return WarnAndReturn(nullptr, "no dynamic symbol table found");
+
+  // We might have an object without a section header. In this case the size of
+  // Symbols is zero, because there is no way to know the size of the dynamic
+  // table. We should allow this case and not print a warning.
+  if (!Symbols.empty() && Reloc.Symbol >= Symbols.size())
+    return WarnAndReturn(
+        nullptr,
+        "index is greater than or equal to the number of dynamic symbols (" +
+            Twine(Symbols.size()) + ")");
+
+  const ELFFile<ELFT> &Obj = Dumper.getElfObject().getELFFile();
+  const uint64_t FileSize = Obj.getBufSize();
+  const uint64_t SymOffset = ((const uint8_t *)FirstSym - Obj.base()) +
+                             (uint64_t)Reloc.Symbol * sizeof(Elf_Sym);
+  if (SymOffset + sizeof(Elf_Sym) > FileSize)
+    return WarnAndReturn(nullptr, "symbol at 0x" + Twine::utohexstr(SymOffset) +
+                                      " goes past the end of the file (0x" +
+                                      Twine::utohexstr(FileSize) + ")");
+
+  const Elf_Sym *Sym = FirstSym + Reloc.Symbol;
+  Expected<StringRef> ErrOrName = Sym->getName(Dumper.getDynamicStringTable());
+  if (!ErrOrName)
+    return WarnAndReturn(Sym, toString(ErrOrName.takeError()));
+
+  return {Sym == FirstSym ? nullptr : Sym, maybeDemangle(*ErrOrName)};
+}
+} // namespace
+
+template <class ELFT>
+static size_t getMaxDynamicTagSize(const ELFFile<ELFT> &Obj,
+                                   typename ELFT::DynRange Tags) {
+  size_t Max = 0;
+  for (const typename ELFT::Dyn &Dyn : Tags)
+    Max = std::max(Max, Obj.getDynamicTagAsString(Dyn.d_tag).size());
+  return Max;
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printDynamicTable() {
+  Elf_Dyn_Range Table = this->dynamic_table();
+  if (Table.empty())
+    return;
+
+  OS << "Dynamic section at offset "
+     << format_hex(reinterpret_cast<const uint8_t *>(this->DynamicTable.Addr) -
+                       this->Obj.base(),
+                   1)
+     << " contains " << Table.size() << " entries:\n";
+
+  // The type name is surrounded with round brackets, hence add 2.
+  size_t MaxTagSize = getMaxDynamicTagSize(this->Obj, Table) + 2;
+  // The "Name/Value" column should be indented from the "Type" column by N
+  // spaces, where N = MaxTagSize - length of "Type" (4) + trailing
+  // space (1) = 3.
+  OS << "  Tag" + std::string(ELFT::Is64Bits ? 16 : 8, ' ') + "Type"
+     << std::string(MaxTagSize - 3, ' ') << "Name/Value\n";
+
+  std::string ValueFmt = " %-" + std::to_string(MaxTagSize) + "s ";
+  for (auto Entry : Table) {
+    uintX_t Tag = Entry.getTag();
+    std::string Type =
+        std::string("(") + this->Obj.getDynamicTagAsString(Tag).c_str() + ")";
+    std::string Value = this->getDynamicEntry(Tag, Entry.getVal());
+    OS << "  " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10)
+       << format(ValueFmt.c_str(), Type.c_str()) << Value << "\n";
+  }
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printDynamicRelocations() {
+  this->printDynamicRelocationsHelper();
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printDynamicReloc(const Relocation<ELFT> &R) {
+  printRelRelaReloc(R, getSymbolForReloc(*this, R));
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printRelocationsHelper(const Elf_Shdr &Sec) {
+  this->forEachRelocationDo(
+      Sec, opts::RawRelr,
+      [&](const Relocation<ELFT> &R, unsigned Ndx, const Elf_Shdr &Sec,
+          const Elf_Shdr *SymTab) { printReloc(R, Ndx, Sec, SymTab); },
+      [&](const Elf_Relr &R) { printRelrReloc(R); });
+}
+
+template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocationsHelper() {
+  const bool IsMips64EL = this->Obj.isMips64EL();
+  if (this->DynRelaRegion.Size > 0) {
+    printDynamicRelocHeader(ELF::SHT_RELA, "RELA", this->DynRelaRegion);
+    for (const Elf_Rela &Rela :
+         this->DynRelaRegion.template getAsArrayRef<Elf_Rela>())
+      printDynamicReloc(Relocation<ELFT>(Rela, IsMips64EL));
+  }
+
+  if (this->DynRelRegion.Size > 0) {
+    printDynamicRelocHeader(ELF::SHT_REL, "REL", this->DynRelRegion);
+    for (const Elf_Rel &Rel :
+         this->DynRelRegion.template getAsArrayRef<Elf_Rel>())
+      printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL));
+  }
+
+  if (this->DynRelrRegion.Size > 0) {
+    printDynamicRelocHeader(ELF::SHT_REL, "RELR", this->DynRelrRegion);
+    Elf_Relr_Range Relrs =
+        this->DynRelrRegion.template getAsArrayRef<Elf_Relr>();
+    for (const Elf_Rel &Rel : Obj.decode_relrs(Relrs))
+      printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL));
+  }
+
+  if (this->DynPLTRelRegion.Size) {
+    if (this->DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) {
+      printDynamicRelocHeader(ELF::SHT_RELA, "PLT", this->DynPLTRelRegion);
+      for (const Elf_Rela &Rela :
+           this->DynPLTRelRegion.template getAsArrayRef<Elf_Rela>())
+        printDynamicReloc(Relocation<ELFT>(Rela, IsMips64EL));
+    } else {
+      printDynamicRelocHeader(ELF::SHT_REL, "PLT", this->DynPLTRelRegion);
+      for (const Elf_Rel &Rel :
+           this->DynPLTRelRegion.template getAsArrayRef<Elf_Rel>())
+        printDynamicReloc(Relocation<ELFT>(Rel, IsMips64EL));
+    }
+  }
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printGNUVersionSectionProlog(
+    const typename ELFT::Shdr &Sec, const Twine &Label, unsigned EntriesNum) {
+  // Don't inline the SecName, because it might report a warning to stderr and
+  // corrupt the output.
+  StringRef SecName = this->getPrintableSectionName(Sec);
+  OS << Label << " section '" << SecName << "' "
+     << "contains " << EntriesNum << " entries:\n";
+
+  StringRef LinkedSecName = "<corrupt>";
+  if (Expected<const typename ELFT::Shdr *> LinkedSecOrErr =
+          this->Obj.getSection(Sec.sh_link))
+    LinkedSecName = this->getPrintableSectionName(**LinkedSecOrErr);
+  else
+    this->reportUniqueWarning("invalid section linked to " +
+                              this->describe(Sec) + ": " +
+                              toString(LinkedSecOrErr.takeError()));
+
+  OS << " Addr: " << format_hex_no_prefix(Sec.sh_addr, 16)
+     << "  Offset: " << format_hex(Sec.sh_offset, 8)
+     << "  Link: " << Sec.sh_link << " (" << LinkedSecName << ")\n";
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printVersionSymbolSection(const Elf_Shdr *Sec) {
+  if (!Sec)
+    return;
+
+  printGNUVersionSectionProlog(*Sec, "Version symbols",
+                               Sec->sh_size / sizeof(Elf_Versym));
+  Expected<ArrayRef<Elf_Versym>> VerTableOrErr =
+      this->getVersionTable(*Sec, /*SymTab=*/nullptr,
+                            /*StrTab=*/nullptr, /*SymTabSec=*/nullptr);
+  if (!VerTableOrErr) {
+    this->reportUniqueWarning(VerTableOrErr.takeError());
+    return;
+  }
+
+  SmallVector<Optional<VersionEntry>, 0> *VersionMap = nullptr;
+  if (Expected<SmallVector<Optional<VersionEntry>, 0> *> MapOrErr =
+          this->getVersionMap())
+    VersionMap = *MapOrErr;
+  else
+    this->reportUniqueWarning(MapOrErr.takeError());
+
+  ArrayRef<Elf_Versym> VerTable = *VerTableOrErr;
+  std::vector<StringRef> Versions;
+  for (size_t I = 0, E = VerTable.size(); I < E; ++I) {
+    unsigned Ndx = VerTable[I].vs_index;
+    if (Ndx == VER_NDX_LOCAL || Ndx == VER_NDX_GLOBAL) {
+      Versions.emplace_back(Ndx == VER_NDX_LOCAL ? "*local*" : "*global*");
+      continue;
+    }
+
+    if (!VersionMap) {
+      Versions.emplace_back("<corrupt>");
+      continue;
+    }
+
+    bool IsDefault;
+    Expected<StringRef> NameOrErr = this->Obj.getSymbolVersionByIndex(
+        Ndx, IsDefault, *VersionMap, /*IsSymHidden=*/None);
+    if (!NameOrErr) {
+      this->reportUniqueWarning("unable to get a version for entry " +
+                                Twine(I) + " of " + this->describe(*Sec) +
+                                ": " + toString(NameOrErr.takeError()));
+      Versions.emplace_back("<corrupt>");
+      continue;
+    }
+    Versions.emplace_back(*NameOrErr);
+  }
+
+  // readelf prints 4 entries per line.
+  uint64_t Entries = VerTable.size();
+  for (uint64_t VersymRow = 0; VersymRow < Entries; VersymRow += 4) {
+    OS << "  " << format_hex_no_prefix(VersymRow, 3) << ":";
+    for (uint64_t I = 0; (I < 4) && (I + VersymRow) < Entries; ++I) {
+      unsigned Ndx = VerTable[VersymRow + I].vs_index;
+      OS << format("%4x%c", Ndx & VERSYM_VERSION,
+                   Ndx & VERSYM_HIDDEN ? 'h' : ' ');
+      OS << left_justify("(" + std::string(Versions[VersymRow + I]) + ")", 13);
+    }
+    OS << '\n';
+  }
+  OS << '\n';
+}
+
+static std::string versionFlagToString(unsigned Flags) {
+  if (Flags == 0)
+    return "none";
+
+  std::string Ret;
+  auto AddFlag = [&Ret, &Flags](unsigned Flag, StringRef Name) {
+    if (!(Flags & Flag))
+      return;
+    if (!Ret.empty())
+      Ret += " | ";
+    Ret += Name;
+    Flags &= ~Flag;
+  };
+
+  AddFlag(VER_FLG_BASE, "BASE");
+  AddFlag(VER_FLG_WEAK, "WEAK");
+  AddFlag(VER_FLG_INFO, "INFO");
+  AddFlag(~0, "<unknown>");
+  return Ret;
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printVersionDefinitionSection(const Elf_Shdr *Sec) {
+  if (!Sec)
+    return;
+
+  printGNUVersionSectionProlog(*Sec, "Version definition", Sec->sh_info);
+
+  Expected<std::vector<VerDef>> V = this->Obj.getVersionDefinitions(*Sec);
+  if (!V) {
+    this->reportUniqueWarning(V.takeError());
+    return;
+  }
+
+  for (const VerDef &Def : *V) {
+    OS << format("  0x%04x: Rev: %u  Flags: %s  Index: %u  Cnt: %u  Name: %s\n",
+                 Def.Offset, Def.Version,
+                 versionFlagToString(Def.Flags).c_str(), Def.Ndx, Def.Cnt,
+                 Def.Name.data());
+    unsigned I = 0;
+    for (const VerdAux &Aux : Def.AuxV)
+      OS << format("  0x%04x: Parent %u: %s\n", Aux.Offset, ++I,
+                   Aux.Name.data());
+  }
+
+  OS << '\n';
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printVersionDependencySection(const Elf_Shdr *Sec) {
+  if (!Sec)
+    return;
+
+  unsigned VerneedNum = Sec->sh_info;
+  printGNUVersionSectionProlog(*Sec, "Version needs", VerneedNum);
+
+  Expected<std::vector<VerNeed>> V =
+      this->Obj.getVersionDependencies(*Sec, this->WarningHandler);
+  if (!V) {
+    this->reportUniqueWarning(V.takeError());
+    return;
+  }
+
+  for (const VerNeed &VN : *V) {
+    OS << format("  0x%04x: Version: %u  File: %s  Cnt: %u\n", VN.Offset,
+                 VN.Version, VN.File.data(), VN.Cnt);
+    for (const VernAux &Aux : VN.AuxV)
+      OS << format("  0x%04x:   Name: %s  Flags: %s  Version: %u\n", Aux.Offset,
+                   Aux.Name.data(), versionFlagToString(Aux.Flags).c_str(),
+                   Aux.Other);
+  }
+  OS << '\n';
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printHashHistogram(const Elf_Hash &HashTable) {
+  size_t NBucket = HashTable.nbucket;
+  size_t NChain = HashTable.nchain;
+  ArrayRef<Elf_Word> Buckets = HashTable.buckets();
+  ArrayRef<Elf_Word> Chains = HashTable.chains();
+  size_t TotalSyms = 0;
+  // If hash table is correct, we have at least chains with 0 length
+  size_t MaxChain = 1;
+  size_t CumulativeNonZero = 0;
+
+  if (NChain == 0 || NBucket == 0)
+    return;
+
+  std::vector<size_t> ChainLen(NBucket, 0);
+  // Go over all buckets and and note chain lengths of each bucket (total
+  // unique chain lengths).
+  for (size_t B = 0; B < NBucket; B++) {
+    std::vector<bool> Visited(NChain);
+    for (size_t C = Buckets[B]; C < NChain; C = Chains[C]) {
+      if (C == ELF::STN_UNDEF)
+        break;
+      if (Visited[C]) {
+        this->reportUniqueWarning(".hash section is invalid: bucket " +
+                                  Twine(C) +
+                                  ": a cycle was detected in the linked chain");
+        break;
+      }
+      Visited[C] = true;
+      if (MaxChain <= ++ChainLen[B])
+        MaxChain++;
+    }
+    TotalSyms += ChainLen[B];
+  }
+
+  if (!TotalSyms)
+    return;
+
+  std::vector<size_t> Count(MaxChain, 0);
+  // Count how long is the chain for each bucket
+  for (size_t B = 0; B < NBucket; B++)
+    ++Count[ChainLen[B]];
+  // Print Number of buckets with each chain lengths and their cumulative
+  // coverage of the symbols
+  OS << "Histogram for bucket list length (total of " << NBucket
+     << " buckets)\n"
+     << " Length  Number     % of total  Coverage\n";
+  for (size_t I = 0; I < MaxChain; I++) {
+    CumulativeNonZero += Count[I] * I;
+    OS << format("%7lu  %-10lu (%5.1f%%)     %5.1f%%\n", I, Count[I],
+                 (Count[I] * 100.0) / NBucket,
+                 (CumulativeNonZero * 100.0) / TotalSyms);
+  }
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printGnuHashHistogram(
+    const Elf_GnuHash &GnuHashTable) {
+  Expected<ArrayRef<Elf_Word>> ChainsOrErr =
+      getGnuHashTableChains<ELFT>(this->DynSymRegion, &GnuHashTable);
+  if (!ChainsOrErr) {
+    this->reportUniqueWarning("unable to print the GNU hash table histogram: " +
+                              toString(ChainsOrErr.takeError()));
+    return;
+  }
+
+  ArrayRef<Elf_Word> Chains = *ChainsOrErr;
+  size_t Symndx = GnuHashTable.symndx;
+  size_t TotalSyms = 0;
+  size_t MaxChain = 1;
+  size_t CumulativeNonZero = 0;
+
+  size_t NBucket = GnuHashTable.nbuckets;
+  if (Chains.empty() || NBucket == 0)
+    return;
+
+  ArrayRef<Elf_Word> Buckets = GnuHashTable.buckets();
+  std::vector<size_t> ChainLen(NBucket, 0);
+  for (size_t B = 0; B < NBucket; B++) {
+    if (!Buckets[B])
+      continue;
+    size_t Len = 1;
+    for (size_t C = Buckets[B] - Symndx;
+         C < Chains.size() && (Chains[C] & 1) == 0; C++)
+      if (MaxChain < ++Len)
+        MaxChain++;
+    ChainLen[B] = Len;
+    TotalSyms += Len;
+  }
+  MaxChain++;
+
+  if (!TotalSyms)
+    return;
+
+  std::vector<size_t> Count(MaxChain, 0);
+  for (size_t B = 0; B < NBucket; B++)
+    ++Count[ChainLen[B]];
+  // Print Number of buckets with each chain lengths and their cumulative
+  // coverage of the symbols
+  OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket
+     << " buckets)\n"
+     << " Length  Number     % of total  Coverage\n";
+  for (size_t I = 0; I < MaxChain; I++) {
+    CumulativeNonZero += Count[I] * I;
+    OS << format("%7lu  %-10lu (%5.1f%%)     %5.1f%%\n", I, Count[I],
+                 (Count[I] * 100.0) / NBucket,
+                 (CumulativeNonZero * 100.0) / TotalSyms);
+  }
+}
+
+// Hash histogram shows statistics of how efficient the hash was for the
+// dynamic symbol table. The table shows the number of hash buckets for
+// different lengths of chains as an absolute number and percentage of the total
+// buckets, and the cumulative coverage of symbols for each set of buckets.
+template <class ELFT> void GNUELFDumper<ELFT>::printHashHistograms() {
+  // Print histogram for the .hash section.
+  if (this->HashTable) {
+    if (Error E = checkHashTable<ELFT>(*this, this->HashTable))
+      this->reportUniqueWarning(std::move(E));
+    else
+      printHashHistogram(*this->HashTable);
+  }
+
+  // Print histogram for the .gnu.hash section.
+  if (this->GnuHashTable) {
+    if (Error E = checkGNUHashTable<ELFT>(this->Obj, this->GnuHashTable))
+      this->reportUniqueWarning(std::move(E));
+    else
+      printGnuHashHistogram(*this->GnuHashTable);
+  }
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printCGProfile() {
+  OS << "GNUStyle::printCGProfile not implemented\n";
+}
+
+static Expected<std::vector<uint64_t>> toULEB128Array(ArrayRef<uint8_t> Data) {
+  std::vector<uint64_t> Ret;
+  const uint8_t *Cur = Data.begin();
+  const uint8_t *End = Data.end();
+  while (Cur != End) {
+    unsigned Size;
+    const char *Err;
+    Ret.push_back(decodeULEB128(Cur, &Size, End, &Err));
+    if (Err)
+      return createError(Err);
+    Cur += Size;
+  }
+  return Ret;
+}
+
+template <class ELFT>
+static Expected<std::vector<uint64_t>>
+decodeAddrsigSection(const ELFFile<ELFT> &Obj, const typename ELFT::Shdr &Sec) {
+  Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj.getSectionContents(Sec);
+  if (!ContentsOrErr)
+    return ContentsOrErr.takeError();
+
+  if (Expected<std::vector<uint64_t>> SymsOrErr =
+          toULEB128Array(*ContentsOrErr))
+    return *SymsOrErr;
+  else
+    return createError("unable to decode " + describe(Obj, Sec) + ": " +
+                       toString(SymsOrErr.takeError()));
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printAddrsig() {
+  if (!this->DotAddrsigSec)
+    return;
+
+  Expected<std::vector<uint64_t>> SymsOrErr =
+      decodeAddrsigSection(this->Obj, *this->DotAddrsigSec);
+  if (!SymsOrErr) {
+    this->reportUniqueWarning(SymsOrErr.takeError());
+    return;
+  }
+
+  StringRef Name = this->getPrintableSectionName(*this->DotAddrsigSec);
+  OS << "\nAddress-significant symbols section '" << Name << "'"
+     << " contains " << SymsOrErr->size() << " entries:\n";
+  OS << "   Num: Name\n";
+
+  Field Fields[2] = {0, 8};
+  size_t SymIndex = 0;
+  for (uint64_t Sym : *SymsOrErr) {
+    Fields[0].Str = to_string(format_decimal(++SymIndex, 6)) + ":";
+    Fields[1].Str = this->getStaticSymbolName(Sym);
+    for (const Field &Entry : Fields)
+      printField(Entry);
+    OS << "\n";
+  }
+}
+
+template <typename ELFT>
+static std::string getGNUProperty(uint32_t Type, uint32_t DataSize,
+                                  ArrayRef<uint8_t> Data) {
+  std::string str;
+  raw_string_ostream OS(str);
+  uint32_t PrData;
+  auto DumpBit = [&](uint32_t Flag, StringRef Name) {
+    if (PrData & Flag) {
+      PrData &= ~Flag;
+      OS << Name;
+      if (PrData)
+        OS << ", ";
+    }
+  };
+
+  switch (Type) {
+  default:
+    OS << format("<application-specific type 0x%x>", Type);
+    return OS.str();
+  case GNU_PROPERTY_STACK_SIZE: {
+    OS << "stack size: ";
+    if (DataSize == sizeof(typename ELFT::uint))
+      OS << formatv("{0:x}",
+                    (uint64_t)(*(const typename ELFT::Addr *)Data.data()));
+    else
+      OS << format("<corrupt length: 0x%x>", DataSize);
+    return OS.str();
+  }
+  case GNU_PROPERTY_NO_COPY_ON_PROTECTED:
+    OS << "no copy on protected";
+    if (DataSize)
+      OS << format(" <corrupt length: 0x%x>", DataSize);
+    return OS.str();
+  case GNU_PROPERTY_AARCH64_FEATURE_1_AND:
+  case GNU_PROPERTY_X86_FEATURE_1_AND:
+    OS << ((Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) ? "aarch64 feature: "
+                                                        : "x86 feature: ");
+    if (DataSize != 4) {
+      OS << format("<corrupt length: 0x%x>", DataSize);
+      return OS.str();
+    }
+    PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
+    if (PrData == 0) {
+      OS << "<None>";
+      return OS.str();
+    }
+    if (Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) {
+      DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI");
+      DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC");
+    } else {
+      DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT");
+      DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK");
+    }
+    if (PrData)
+      OS << format("<unknown flags: 0x%x>", PrData);
+    return OS.str();
+  case GNU_PROPERTY_X86_ISA_1_NEEDED:
+  case GNU_PROPERTY_X86_ISA_1_USED:
+    OS << "x86 ISA "
+       << (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: ");
+    if (DataSize != 4) {
+      OS << format("<corrupt length: 0x%x>", DataSize);
+      return OS.str();
+    }
+    PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
+    if (PrData == 0) {
+      OS << "<None>";
+      return OS.str();
+    }
+    DumpBit(GNU_PROPERTY_X86_ISA_1_CMOV, "CMOV");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE, "SSE");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE2, "SSE2");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE3, "SSE3");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_SSSE3, "SSSE3");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_1, "SSE4_1");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_2, "SSE4_2");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX, "AVX");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX2, "AVX2");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_FMA, "FMA");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512F, "AVX512F");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512CD, "AVX512CD");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512ER, "AVX512ER");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512PF, "AVX512PF");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512VL, "AVX512VL");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512DQ, "AVX512DQ");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512BW, "AVX512BW");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS, "AVX512_4FMAPS");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW, "AVX512_4VNNIW");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG, "AVX512_BITALG");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA, "AVX512_IFMA");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI, "AVX512_VBMI");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2, "AVX512_VBMI2");
+    DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI, "AVX512_VNNI");
+    if (PrData)
+      OS << format("<unknown flags: 0x%x>", PrData);
+    return OS.str();
+    break;
+  case GNU_PROPERTY_X86_FEATURE_2_NEEDED:
+  case GNU_PROPERTY_X86_FEATURE_2_USED:
+    OS << "x86 feature "
+       << (Type == GNU_PROPERTY_X86_FEATURE_2_NEEDED ? "needed: " : "used: ");
+    if (DataSize != 4) {
+      OS << format("<corrupt length: 0x%x>", DataSize);
+      return OS.str();
+    }
+    PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
+    if (PrData == 0) {
+      OS << "<None>";
+      return OS.str();
+    }
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_X86, "x86");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_X87, "x87");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_MMX, "MMX");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_XMM, "XMM");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_YMM, "YMM");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_ZMM, "ZMM");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_FXSR, "FXSR");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVE, "XSAVE");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT, "XSAVEOPT");
+    DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEC, "XSAVEC");
+    if (PrData)
+      OS << format("<unknown flags: 0x%x>", PrData);
+    return OS.str();
+  }
+}
+
+template <typename ELFT>
+static SmallVector<std::string, 4> getGNUPropertyList(ArrayRef<uint8_t> Arr) {
+  using Elf_Word = typename ELFT::Word;
+
+  SmallVector<std::string, 4> Properties;
+  while (Arr.size() >= 8) {
+    uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data());
+    uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4);
+    Arr = Arr.drop_front(8);
+
+    // Take padding size into account if present.
+    uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint));
+    std::string str;
+    raw_string_ostream OS(str);
+    if (Arr.size() < PaddedSize) {
+      OS << format("<corrupt type (0x%x) datasz: 0x%x>", Type, DataSize);
+      Properties.push_back(OS.str());
+      break;
+    }
+    Properties.push_back(
+        getGNUProperty<ELFT>(Type, DataSize, Arr.take_front(PaddedSize)));
+    Arr = Arr.drop_front(PaddedSize);
+  }
+
+  if (!Arr.empty())
+    Properties.push_back("<corrupted GNU_PROPERTY_TYPE_0>");
+
+  return Properties;
+}
+
+struct GNUAbiTag {
+  std::string OSName;
+  std::string ABI;
+  bool IsValid;
+};
+
+template <typename ELFT> static GNUAbiTag getGNUAbiTag(ArrayRef<uint8_t> Desc) {
+  typedef typename ELFT::Word Elf_Word;
+
+  ArrayRef<Elf_Word> Words(reinterpret_cast<const Elf_Word *>(Desc.begin()),
+                           reinterpret_cast<const Elf_Word *>(Desc.end()));
+
+  if (Words.size() < 4)
+    return {"", "", /*IsValid=*/false};
+
+  static const char *OSNames[] = {
+      "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl",
+  };
+  StringRef OSName = "Unknown";
+  if (Words[0] < array_lengthof(OSNames))
+    OSName = OSNames[Words[0]];
+  uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3];
+  std::string str;
+  raw_string_ostream ABI(str);
+  ABI << Major << "." << Minor << "." << Patch;
+  return {std::string(OSName), ABI.str(), /*IsValid=*/true};
+}
+
+static std::string getGNUBuildId(ArrayRef<uint8_t> Desc) {
+  std::string str;
+  raw_string_ostream OS(str);
+  for (uint8_t B : Desc)
+    OS << format_hex_no_prefix(B, 2);
+  return OS.str();
+}
+
+static StringRef getGNUGoldVersion(ArrayRef<uint8_t> Desc) {
+  return StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size());
+}
+
+template <typename ELFT>
+static void printGNUNote(raw_ostream &OS, uint32_t NoteType,
+                         ArrayRef<uint8_t> Desc) {
+  switch (NoteType) {
+  default:
+    return;
+  case ELF::NT_GNU_ABI_TAG: {
+    const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
+    if (!AbiTag.IsValid)
+      OS << "    <corrupt GNU_ABI_TAG>";
+    else
+      OS << "    OS: " << AbiTag.OSName << ", ABI: " << AbiTag.ABI;
+    break;
+  }
+  case ELF::NT_GNU_BUILD_ID: {
+    OS << "    Build ID: " << getGNUBuildId(Desc);
+    break;
+  }
+  case ELF::NT_GNU_GOLD_VERSION:
+    OS << "    Version: " << getGNUGoldVersion(Desc);
+    break;
+  case ELF::NT_GNU_PROPERTY_TYPE_0:
+    OS << "    Properties:";
+    for (const std::string &Property : getGNUPropertyList<ELFT>(Desc))
+      OS << "    " << Property << "\n";
+    break;
+  }
+  OS << '\n';
+}
+
+struct AMDNote {
+  std::string Type;
+  std::string Value;
+};
+
+template <typename ELFT>
+static AMDNote getAMDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) {
+  switch (NoteType) {
+  default:
+    return {"", ""};
+  case ELF::NT_AMD_AMDGPU_HSA_METADATA:
+    return {
+        "HSA Metadata",
+        std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
+  case ELF::NT_AMD_AMDGPU_ISA:
+    return {
+        "ISA Version",
+        std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
+  }
+}
+
+struct AMDGPUNote {
+  std::string Type;
+  std::string Value;
+};
+
+template <typename ELFT>
+static AMDGPUNote getAMDGPUNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) {
+  switch (NoteType) {
+  default:
+    return {"", ""};
+  case ELF::NT_AMDGPU_METADATA: {
+    StringRef MsgPackString =
+        StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size());
+    msgpack::Document MsgPackDoc;
+    if (!MsgPackDoc.readFromBlob(MsgPackString, /*Multi=*/false))
+      return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"};
+
+    AMDGPU::HSAMD::V3::MetadataVerifier Verifier(true);
+    std::string HSAMetadataString;
+    if (!Verifier.verify(MsgPackDoc.getRoot()))
+      HSAMetadataString = "Invalid AMDGPU Metadata\n";
+
+    raw_string_ostream StrOS(HSAMetadataString);
+    MsgPackDoc.toYAML(StrOS);
+
+    return {"AMDGPU Metadata", StrOS.str()};
+  }
+  }
+}
+
+struct CoreFileMapping {
+  uint64_t Start, End, Offset;
+  StringRef Filename;
+};
+
+struct CoreNote {
+  uint64_t PageSize;
+  std::vector<CoreFileMapping> Mappings;
+};
+
+static Expected<CoreNote> readCoreNote(DataExtractor Desc) {
+  // Expected format of the NT_FILE note description:
+  // 1. # of file mappings (call it N)
+  // 2. Page size
+  // 3. N (start, end, offset) triples
+  // 4. N packed filenames (null delimited)
+  // Each field is an Elf_Addr, except for filenames which are char* strings.
+
+  CoreNote Ret;
+  const int Bytes = Desc.getAddressSize();
+
+  if (!Desc.isValidOffsetForAddress(2))
+    return createError("the note of size 0x" + Twine::utohexstr(Desc.size()) +
+                       " is too short, expected at least 0x" +
+                       Twine::utohexstr(Bytes * 2));
+  if (Desc.getData().back() != 0)
+    return createError("the note is not NUL terminated");
+
+  uint64_t DescOffset = 0;
+  uint64_t FileCount = Desc.getAddress(&DescOffset);
+  Ret.PageSize = Desc.getAddress(&DescOffset);
+
+  if (!Desc.isValidOffsetForAddress(3 * FileCount * Bytes))
+    return createError("unable to read file mappings (found " +
+                       Twine(FileCount) + "): the note of size 0x" +
+                       Twine::utohexstr(Desc.size()) + " is too short");
+
+  uint64_t FilenamesOffset = 0;
+  DataExtractor Filenames(
+      Desc.getData().drop_front(DescOffset + 3 * FileCount * Bytes),
+      Desc.isLittleEndian(), Desc.getAddressSize());
+
+  Ret.Mappings.resize(FileCount);
+  size_t I = 0;
+  for (CoreFileMapping &Mapping : Ret.Mappings) {
+    ++I;
+    if (!Filenames.isValidOffsetForDataOfSize(FilenamesOffset, 1))
+      return createError(
+          "unable to read the file name for the mapping with index " +
+          Twine(I) + ": the note of size 0x" + Twine::utohexstr(Desc.size()) +
+          " is truncated");
+    Mapping.Start = Desc.getAddress(&DescOffset);
+    Mapping.End = Desc.getAddress(&DescOffset);
+    Mapping.Offset = Desc.getAddress(&DescOffset);
+    Mapping.Filename = Filenames.getCStrRef(&FilenamesOffset);
+  }
+
+  return Ret;
+}
+
+template <typename ELFT>
+static void printCoreNote(raw_ostream &OS, const CoreNote &Note) {
+  // Length of "0x<address>" string.
+  const int FieldWidth = ELFT::Is64Bits ? 18 : 10;
+
+  OS << "    Page size: " << format_decimal(Note.PageSize, 0) << '\n';
+  OS << "    " << right_justify("Start", FieldWidth) << "  "
+     << right_justify("End", FieldWidth) << "  "
+     << right_justify("Page Offset", FieldWidth) << '\n';
+  for (const CoreFileMapping &Mapping : Note.Mappings) {
+    OS << "    " << format_hex(Mapping.Start, FieldWidth) << "  "
+       << format_hex(Mapping.End, FieldWidth) << "  "
+       << format_hex(Mapping.Offset, FieldWidth) << "\n        "
+       << Mapping.Filename << '\n';
+  }
+}
+
+static const NoteType GenericNoteTypes[] = {
+    {ELF::NT_VERSION, "NT_VERSION (version)"},
+    {ELF::NT_ARCH, "NT_ARCH (architecture)"},
+    {ELF::NT_GNU_BUILD_ATTRIBUTE_OPEN, "OPEN"},
+    {ELF::NT_GNU_BUILD_ATTRIBUTE_FUNC, "func"},
+};
+
+static const NoteType GNUNoteTypes[] = {
+    {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"},
+    {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"},
+    {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"},
+    {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"},
+    {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"},
+};
+
+static const NoteType FreeBSDNoteTypes[] = {
+    {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"},
+    {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"},
+    {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"},
+    {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"},
+    {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"},
+    {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"},
+    {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"},
+    {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"},
+    {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS,
+     "NT_PROCSTAT_PSSTRINGS (ps_strings data)"},
+    {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"},
+};
+
+static const NoteType AMDNoteTypes[] = {
+    {ELF::NT_AMD_AMDGPU_HSA_METADATA,
+     "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"},
+    {ELF::NT_AMD_AMDGPU_ISA, "NT_AMD_AMDGPU_ISA (ISA Version)"},
+    {ELF::NT_AMD_AMDGPU_PAL_METADATA,
+     "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"},
+};
+
+static const NoteType AMDGPUNoteTypes[] = {
+    {ELF::NT_AMDGPU_METADATA, "NT_AMDGPU_METADATA (AMDGPU Metadata)"},
+};
+
+static const NoteType CoreNoteTypes[] = {
+    {ELF::NT_PRSTATUS, "NT_PRSTATUS (prstatus structure)"},
+    {ELF::NT_FPREGSET, "NT_FPREGSET (floating point registers)"},
+    {ELF::NT_PRPSINFO, "NT_PRPSINFO (prpsinfo structure)"},
+    {ELF::NT_TASKSTRUCT, "NT_TASKSTRUCT (task structure)"},
+    {ELF::NT_AUXV, "NT_AUXV (auxiliary vector)"},
+    {ELF::NT_PSTATUS, "NT_PSTATUS (pstatus structure)"},
+    {ELF::NT_FPREGS, "NT_FPREGS (floating point registers)"},
+    {ELF::NT_PSINFO, "NT_PSINFO (psinfo structure)"},
+    {ELF::NT_LWPSTATUS, "NT_LWPSTATUS (lwpstatus_t structure)"},
+    {ELF::NT_LWPSINFO, "NT_LWPSINFO (lwpsinfo_t structure)"},
+    {ELF::NT_WIN32PSTATUS, "NT_WIN32PSTATUS (win32_pstatus structure)"},
+
+    {ELF::NT_PPC_VMX, "NT_PPC_VMX (ppc Altivec registers)"},
+    {ELF::NT_PPC_VSX, "NT_PPC_VSX (ppc VSX registers)"},
+    {ELF::NT_PPC_TAR, "NT_PPC_TAR (ppc TAR register)"},
+    {ELF::NT_PPC_PPR, "NT_PPC_PPR (ppc PPR register)"},
+    {ELF::NT_PPC_DSCR, "NT_PPC_DSCR (ppc DSCR register)"},
+    {ELF::NT_PPC_EBB, "NT_PPC_EBB (ppc EBB registers)"},
+    {ELF::NT_PPC_PMU, "NT_PPC_PMU (ppc PMU registers)"},
+    {ELF::NT_PPC_TM_CGPR, "NT_PPC_TM_CGPR (ppc checkpointed GPR registers)"},
+    {ELF::NT_PPC_TM_CFPR,
+     "NT_PPC_TM_CFPR (ppc checkpointed floating point registers)"},
+    {ELF::NT_PPC_TM_CVMX,
+     "NT_PPC_TM_CVMX (ppc checkpointed Altivec registers)"},
+    {ELF::NT_PPC_TM_CVSX, "NT_PPC_TM_CVSX (ppc checkpointed VSX registers)"},
+    {ELF::NT_PPC_TM_SPR, "NT_PPC_TM_SPR (ppc TM special purpose registers)"},
+    {ELF::NT_PPC_TM_CTAR, "NT_PPC_TM_CTAR (ppc checkpointed TAR register)"},
+    {ELF::NT_PPC_TM_CPPR, "NT_PPC_TM_CPPR (ppc checkpointed PPR register)"},
+    {ELF::NT_PPC_TM_CDSCR, "NT_PPC_TM_CDSCR (ppc checkpointed DSCR register)"},
+
+    {ELF::NT_386_TLS, "NT_386_TLS (x86 TLS information)"},
+    {ELF::NT_386_IOPERM, "NT_386_IOPERM (x86 I/O permissions)"},
+    {ELF::NT_X86_XSTATE, "NT_X86_XSTATE (x86 XSAVE extended state)"},
+
+    {ELF::NT_S390_HIGH_GPRS, "NT_S390_HIGH_GPRS (s390 upper register halves)"},
+    {ELF::NT_S390_TIMER, "NT_S390_TIMER (s390 timer register)"},
+    {ELF::NT_S390_TODCMP, "NT_S390_TODCMP (s390 TOD comparator register)"},
+    {ELF::NT_S390_TODPREG, "NT_S390_TODPREG (s390 TOD programmable register)"},
+    {ELF::NT_S390_CTRS, "NT_S390_CTRS (s390 control registers)"},
+    {ELF::NT_S390_PREFIX, "NT_S390_PREFIX (s390 prefix register)"},
+    {ELF::NT_S390_LAST_BREAK,
+     "NT_S390_LAST_BREAK (s390 last breaking event address)"},
+    {ELF::NT_S390_SYSTEM_CALL,
+     "NT_S390_SYSTEM_CALL (s390 system call restart data)"},
+    {ELF::NT_S390_TDB, "NT_S390_TDB (s390 transaction diagnostic block)"},
+    {ELF::NT_S390_VXRS_LOW,
+     "NT_S390_VXRS_LOW (s390 vector registers 0-15 upper half)"},
+    {ELF::NT_S390_VXRS_HIGH, "NT_S390_VXRS_HIGH (s390 vector registers 16-31)"},
+    {ELF::NT_S390_GS_CB, "NT_S390_GS_CB (s390 guarded-storage registers)"},
+    {ELF::NT_S390_GS_BC,
+     "NT_S390_GS_BC (s390 guarded-storage broadcast control)"},
+
+    {ELF::NT_ARM_VFP, "NT_ARM_VFP (arm VFP registers)"},
+    {ELF::NT_ARM_TLS, "NT_ARM_TLS (AArch TLS registers)"},
+    {ELF::NT_ARM_HW_BREAK,
+     "NT_ARM_HW_BREAK (AArch hardware breakpoint registers)"},
+    {ELF::NT_ARM_HW_WATCH,
+     "NT_ARM_HW_WATCH (AArch hardware watchpoint registers)"},
+
+    {ELF::NT_FILE, "NT_FILE (mapped files)"},
+    {ELF::NT_PRXFPREG, "NT_PRXFPREG (user_xfpregs structure)"},
+    {ELF::NT_SIGINFO, "NT_SIGINFO (siginfo_t data)"},
+};
+
+template <class ELFT>
+const StringRef getNoteTypeName(const typename ELFT::Note &Note,
+                                unsigned ELFType) {
+  uint32_t Type = Note.getType();
+  auto FindNote = [&](ArrayRef<NoteType> V) -> StringRef {
+    for (const NoteType &N : V)
+      if (N.ID == Type)
+        return N.Name;
+    return "";
+  };
+
+  StringRef Name = Note.getName();
+  if (Name == "GNU")
+    return FindNote(GNUNoteTypes);
+  if (Name == "FreeBSD")
+    return FindNote(FreeBSDNoteTypes);
+  if (Name == "AMD")
+    return FindNote(AMDNoteTypes);
+  if (Name == "AMDGPU")
+    return FindNote(AMDGPUNoteTypes);
+
+  if (ELFType == ELF::ET_CORE)
+    return FindNote(CoreNoteTypes);
+  return FindNote(GenericNoteTypes);
+}
+
+template <class ELFT>
+static void printNotesHelper(
+    const ELFDumper<ELFT> &Dumper,
+    llvm::function_ref<void(Optional<StringRef>, typename ELFT::Off,
+                            typename ELFT::Addr)>
+        StartNotesFn,
+    llvm::function_ref<Error(const typename ELFT::Note &)> ProcessNoteFn,
+    llvm::function_ref<void()> FinishNotesFn) {
+  const ELFFile<ELFT> &Obj = Dumper.getElfObject().getELFFile();
+
+  ArrayRef<typename ELFT::Shdr> Sections = cantFail(Obj.sections());
+  if (Obj.getHeader().e_type != ELF::ET_CORE && !Sections.empty()) {
+    for (const typename ELFT::Shdr &S : Sections) {
+      if (S.sh_type != SHT_NOTE)
+        continue;
+      StartNotesFn(expectedToOptional(Obj.getSectionName(S)), S.sh_offset,
+                   S.sh_size);
+      Error Err = Error::success();
+      size_t I = 0;
+      for (const typename ELFT::Note Note : Obj.notes(S, Err)) {
+        if (Error E = ProcessNoteFn(Note))
+          Dumper.reportUniqueWarning(
+              "unable to read note with index " + Twine(I) + " from the " +
+              describe(Obj, S) + ": " + toString(std::move(E)));
+        ++I;
+      }
+      if (Err)
+        Dumper.reportUniqueWarning("unable to read notes from the " +
+                                   describe(Obj, S) + ": " +
+                                   toString(std::move(Err)));
+      FinishNotesFn();
+    }
+    return;
+  }
+
+  Expected<ArrayRef<typename ELFT::Phdr>> PhdrsOrErr = Obj.program_headers();
+  if (!PhdrsOrErr) {
+    Dumper.reportUniqueWarning(
+        "unable to read program headers to locate the PT_NOTE segment: " +
+        toString(PhdrsOrErr.takeError()));
+    return;
+  }
+
+  for (size_t I = 0, E = (*PhdrsOrErr).size(); I != E; ++I) {
+    const typename ELFT::Phdr &P = (*PhdrsOrErr)[I];
+    if (P.p_type != PT_NOTE)
+      continue;
+    StartNotesFn(/*SecName=*/None, P.p_offset, P.p_filesz);
+    Error Err = Error::success();
+    size_t Index = 0;
+    for (const typename ELFT::Note Note : Obj.notes(P, Err)) {
+      if (Error E = ProcessNoteFn(Note))
+        Dumper.reportUniqueWarning("unable to read note with index " +
+                                   Twine(Index) +
+                                   " from the PT_NOTE segment with index " +
+                                   Twine(I) + ": " + toString(std::move(E)));
+      ++Index;
+    }
+    if (Err)
+      Dumper.reportUniqueWarning(
+          "unable to read notes from the PT_NOTE segment with index " +
+          Twine(I) + ": " + toString(std::move(Err)));
+    FinishNotesFn();
+  }
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printNotes() {
+  auto PrintHeader = [&](Optional<StringRef> SecName,
+                         const typename ELFT::Off Offset,
+                         const typename ELFT::Addr Size) {
+    OS << "Displaying notes found ";
+
+    if (SecName)
+      OS << "in: " << *SecName << "\n";
+    else
+      OS << "at file offset " << format_hex(Offset, 10) << " with length "
+         << format_hex(Size, 10) << ":\n";
+
+    OS << "  Owner                Data size \tDescription\n";
+  };
+
+  auto ProcessNote = [&](const Elf_Note &Note) -> Error {
+    StringRef Name = Note.getName();
+    ArrayRef<uint8_t> Descriptor = Note.getDesc();
+    Elf_Word Type = Note.getType();
+
+    // Print the note owner/type.
+    OS << "  " << left_justify(Name, 20) << ' '
+       << format_hex(Descriptor.size(), 10) << '\t';
+
+    StringRef NoteType =
+        getNoteTypeName<ELFT>(Note, this->Obj.getHeader().e_type);
+    if (!NoteType.empty())
+      OS << NoteType << '\n';
+    else
+      OS << "Unknown note type: (" << format_hex(Type, 10) << ")\n";
+
+    // Print the description, or fallback to printing raw bytes for unknown
+    // owners.
+    if (Name == "GNU") {
+      printGNUNote<ELFT>(OS, Type, Descriptor);
+    } else if (Name == "AMD") {
+      const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
+      if (!N.Type.empty())
+        OS << "    " << N.Type << ":\n        " << N.Value << '\n';
+    } else if (Name == "AMDGPU") {
+      const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
+      if (!N.Type.empty())
+        OS << "    " << N.Type << ":\n        " << N.Value << '\n';
+    } else if (Name == "CORE") {
+      if (Type == ELF::NT_FILE) {
+        DataExtractor DescExtractor(Descriptor,
+                                    ELFT::TargetEndianness == support::little,
+                                    sizeof(Elf_Addr));
+        if (Expected<CoreNote> NoteOrErr = readCoreNote(DescExtractor))
+          printCoreNote<ELFT>(OS, *NoteOrErr);
+        else
+          return NoteOrErr.takeError();
+      }
+    } else if (!Descriptor.empty()) {
+      OS << "   description data:";
+      for (uint8_t B : Descriptor)
+        OS << " " << format("%02x", B);
+      OS << '\n';
+    }
+    return Error::success();
+  };
+
+  printNotesHelper(*this, PrintHeader, ProcessNote, []() {});
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printELFLinkerOptions() {
+  OS << "printELFLinkerOptions not implemented!\n";
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printDependentLibsHelper(
+    function_ref<void(const Elf_Shdr &)> OnSectionStart,
+    function_ref<void(StringRef, uint64_t)> OnLibEntry) {
+  auto Warn = [this](unsigned SecNdx, StringRef Msg) {
+    this->reportUniqueWarning("SHT_LLVM_DEPENDENT_LIBRARIES section at index " +
+                              Twine(SecNdx) + " is broken: " + Msg);
+  };
+
+  unsigned I = -1;
+  for (const Elf_Shdr &Shdr : cantFail(Obj.sections())) {
+    ++I;
+    if (Shdr.sh_type != ELF::SHT_LLVM_DEPENDENT_LIBRARIES)
+      continue;
+
+    OnSectionStart(Shdr);
+
+    Expected<ArrayRef<uint8_t>> ContentsOrErr = Obj.getSectionContents(Shdr);
+    if (!ContentsOrErr) {
+      Warn(I, toString(ContentsOrErr.takeError()));
+      continue;
+    }
+
+    ArrayRef<uint8_t> Contents = *ContentsOrErr;
+    if (!Contents.empty() && Contents.back() != 0) {
+      Warn(I, "the content is not null-terminated");
+      continue;
+    }
+
+    for (const uint8_t *I = Contents.begin(), *E = Contents.end(); I < E;) {
+      StringRef Lib((const char *)I);
+      OnLibEntry(Lib, I - Contents.begin());
+      I += Lib.size() + 1;
+    }
+  }
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::forEachRelocationDo(
+    const Elf_Shdr &Sec, bool RawRelr,
+    llvm::function_ref<void(const Relocation<ELFT> &, unsigned,
+                            const Elf_Shdr &, const Elf_Shdr *)>
+        RelRelaFn,
+    llvm::function_ref<void(const Elf_Relr &)> RelrFn) {
+  auto Warn = [&](Error &&E,
+                  const Twine &Prefix = "unable to read relocations from") {
+    this->reportUniqueWarning(Prefix + " " + describe(Sec) + ": " +
+                              toString(std::move(E)));
+  };
+
+  // SHT_RELR/SHT_ANDROID_RELR sections do not have an associated symbol table.
+  // For them we should not treat the value of the sh_link field as an index of
+  // a symbol table.
+  const Elf_Shdr *SymTab;
+  if (Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_RELR) {
+    Expected<const Elf_Shdr *> SymTabOrErr = Obj.getSection(Sec.sh_link);
+    if (!SymTabOrErr) {
+      Warn(SymTabOrErr.takeError(), "unable to locate a symbol table for");
+      return;
+    }
+    SymTab = *SymTabOrErr;
+  }
+
+  unsigned RelNdx = 0;
+  const bool IsMips64EL = this->Obj.isMips64EL();
+  switch (Sec.sh_type) {
+  case ELF::SHT_REL:
+    if (Expected<Elf_Rel_Range> RangeOrErr = Obj.rels(Sec)) {
+      for (const Elf_Rel &R : *RangeOrErr)
+        RelRelaFn(Relocation<ELFT>(R, IsMips64EL), RelNdx++, Sec, SymTab);
+    } else {
+      Warn(RangeOrErr.takeError());
+    }
+    break;
+  case ELF::SHT_RELA:
+    if (Expected<Elf_Rela_Range> RangeOrErr = Obj.relas(Sec)) {
+      for (const Elf_Rela &R : *RangeOrErr)
+        RelRelaFn(Relocation<ELFT>(R, IsMips64EL), RelNdx++, Sec, SymTab);
+    } else {
+      Warn(RangeOrErr.takeError());
+    }
+    break;
+  case ELF::SHT_RELR:
+  case ELF::SHT_ANDROID_RELR: {
+    Expected<Elf_Relr_Range> RangeOrErr = Obj.relrs(Sec);
+    if (!RangeOrErr) {
+      Warn(RangeOrErr.takeError());
+      break;
+    }
+    if (RawRelr) {
+      for (const Elf_Relr &R : *RangeOrErr)
+        RelrFn(R);
+      break;
+    }
+
+    for (const Elf_Rel &R : Obj.decode_relrs(*RangeOrErr))
+      RelRelaFn(Relocation<ELFT>(R, IsMips64EL), RelNdx++, Sec,
+                /*SymTab=*/nullptr);
+    break;
+  }
+  case ELF::SHT_ANDROID_REL:
+  case ELF::SHT_ANDROID_RELA:
+    if (Expected<std::vector<Elf_Rela>> RelasOrErr = Obj.android_relas(Sec)) {
+      for (const Elf_Rela &R : *RelasOrErr)
+        RelRelaFn(Relocation<ELFT>(R, IsMips64EL), RelNdx++, Sec, SymTab);
+    } else {
+      Warn(RelasOrErr.takeError());
+    }
+    break;
+  }
+}
+
+template <class ELFT>
+StringRef ELFDumper<ELFT>::getPrintableSectionName(const Elf_Shdr &Sec) const {
+  StringRef Name = "<?>";
+  if (Expected<StringRef> SecNameOrErr =
+          Obj.getSectionName(Sec, this->WarningHandler))
+    Name = *SecNameOrErr;
+  else
+    this->reportUniqueWarning("unable to get the name of " + describe(Sec) +
+                              ": " + toString(SecNameOrErr.takeError()));
+  return Name;
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printDependentLibs() {
+  bool SectionStarted = false;
+  struct NameOffset {
+    StringRef Name;
+    uint64_t Offset;
+  };
+  std::vector<NameOffset> SecEntries;
+  NameOffset Current;
+  auto PrintSection = [&]() {
+    OS << "Dependent libraries section " << Current.Name << " at offset "
+       << format_hex(Current.Offset, 1) << " contains " << SecEntries.size()
+       << " entries:\n";
+    for (NameOffset Entry : SecEntries)
+      OS << "  [" << format("%6" PRIx64, Entry.Offset) << "]  " << Entry.Name
+         << "\n";
+    OS << "\n";
+    SecEntries.clear();
+  };
+
+  auto OnSectionStart = [&](const Elf_Shdr &Shdr) {
+    if (SectionStarted)
+      PrintSection();
+    SectionStarted = true;
+    Current.Offset = Shdr.sh_offset;
+    Current.Name = this->getPrintableSectionName(Shdr);
+  };
+  auto OnLibEntry = [&](StringRef Lib, uint64_t Offset) {
+    SecEntries.push_back(NameOffset{Lib, Offset});
+  };
+
+  this->printDependentLibsHelper(OnSectionStart, OnLibEntry);
+  if (SectionStarted)
+    PrintSection();
+}
+
+template <class ELFT>
+bool ELFDumper<ELFT>::printFunctionStackSize(
+    uint64_t SymValue, Optional<const Elf_Shdr *> FunctionSec,
+    const Elf_Shdr &StackSizeSec, DataExtractor Data, uint64_t *Offset) {
+  uint32_t FuncSymIndex = 0;
+  if (this->DotSymtabSec) {
+    if (Expected<Elf_Sym_Range> SymsOrError = Obj.symbols(this->DotSymtabSec)) {
+      uint32_t Index = (uint32_t)-1;
+      for (const Elf_Sym &Sym : *SymsOrError) {
+        ++Index;
+
+        if (Sym.st_shndx == ELF::SHN_UNDEF || Sym.getType() != ELF::STT_FUNC)
+          continue;
+
+        if (Expected<uint64_t> SymAddrOrErr =
+                ObjF.toSymbolRef(this->DotSymtabSec, Index).getAddress()) {
+          if (SymValue != *SymAddrOrErr)
+            continue;
+        } else {
+          std::string Name = this->getStaticSymbolName(Index);
+          reportUniqueWarning("unable to get address of symbol '" + Name +
+                              "': " + toString(SymAddrOrErr.takeError()));
+          break;
+        }
+
+        // Check if the symbol is in the right section. FunctionSec == None
+        // means "any section".
+        if (FunctionSec) {
+          if (Expected<const Elf_Shdr *> SecOrErr =
+                  Obj.getSection(Sym, this->DotSymtabSec,
+                                 this->getShndxTable(this->DotSymtabSec))) {
+            if (*FunctionSec != *SecOrErr)
+              continue;
+          } else {
+            std::string Name = this->getStaticSymbolName(Index);
+            // Note: it is impossible to trigger this error currently, it is
+            // untested.
+            reportUniqueWarning("unable to get section of symbol '" + Name +
+                                "': " + toString(SecOrErr.takeError()));
+            break;
+          }
+        }
+
+        FuncSymIndex = Index;
+        break;
+      }
+    } else {
+      reportUniqueWarning("unable to read the symbol table: " +
+                          toString(SymsOrError.takeError()));
+    }
+  }
+
+  std::string FuncName = "?";
+  if (!FuncSymIndex)
+    reportUniqueWarning(
+        "could not identify function symbol for stack size entry in " +
+        describe(StackSizeSec));
+  else
+    FuncName = this->getStaticSymbolName(FuncSymIndex);
+
+  // Extract the size. The expectation is that Offset is pointing to the right
+  // place, i.e. past the function address.
+  Error Err = Error::success();
+  uint64_t StackSize = Data.getULEB128(Offset, &Err);
+  if (Err) {
+    reportUniqueWarning("could not extract a valid stack size from " +
+                        describe(StackSizeSec) + ": " +
+                        toString(std::move(Err)));
+    return false;
+  }
+  printStackSizeEntry(StackSize, FuncName);
+  return true;
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printStackSizeEntry(uint64_t Size,
+                                             StringRef FuncName) {
+  OS.PadToColumn(2);
+  OS << format_decimal(Size, 11);
+  OS.PadToColumn(18);
+  OS << FuncName << "\n";
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printStackSize(const Relocation<ELFT> &R,
+                                     const Elf_Shdr &RelocSec, unsigned Ndx,
+                                     const Elf_Shdr *SymTab,
+                                     const Elf_Shdr *FunctionSec,
+                                     const Elf_Shdr &StackSizeSec,
+                                     const RelocationResolver &Resolver,
+                                     DataExtractor Data) {
+  // This function ignores potentially erroneous input, unless it is directly
+  // related to stack size reporting.
+  const Elf_Sym *Sym = nullptr;
+  Expected<RelSymbol<ELFT>> TargetOrErr = this->getRelocationTarget(R, SymTab);
+  if (!TargetOrErr)
+    reportUniqueWarning("unable to get the target of relocation with index " +
+                        Twine(Ndx) + " in " + describe(RelocSec) + ": " +
+                        toString(TargetOrErr.takeError()));
+  else
+    Sym = TargetOrErr->Sym;
+
+  uint64_t RelocSymValue = 0;
+  if (Sym) {
+    Expected<const Elf_Shdr *> SectionOrErr =
+        this->Obj.getSection(*Sym, SymTab, this->getShndxTable(SymTab));
+    if (!SectionOrErr) {
+      reportUniqueWarning(
+          "cannot identify the section for relocation symbol '" +
+          (*TargetOrErr).Name + "': " + toString(SectionOrErr.takeError()));
+    } else if (*SectionOrErr != FunctionSec) {
+      reportUniqueWarning("relocation symbol '" + (*TargetOrErr).Name +
+                          "' is not in the expected section");
+      // Pretend that the symbol is in the correct section and report its
+      // stack size anyway.
+      FunctionSec = *SectionOrErr;
+    }
+
+    RelocSymValue = Sym->st_value;
+  }
+
+  uint64_t Offset = R.Offset;
+  if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) {
+    reportUniqueWarning("found invalid relocation offset (0x" +
+                        Twine::utohexstr(Offset) + ") into " +
+                        describe(StackSizeSec) +
+                        " while trying to extract a stack size entry");
+    return;
+  }
+
+  uint64_t SymValue =
+      Resolver(R.Type, Offset, RelocSymValue, Data.getAddress(&Offset),
+               R.Addend.getValueOr(0));
+  this->printFunctionStackSize(SymValue, FunctionSec, StackSizeSec, Data,
+                               &Offset);
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printNonRelocatableStackSizes(
+    std::function<void()> PrintHeader) {
+  // This function ignores potentially erroneous input, unless it is directly
+  // related to stack size reporting.
+  for (const Elf_Shdr &Sec : cantFail(Obj.sections())) {
+    if (this->getPrintableSectionName(Sec) != ".stack_sizes")
+      continue;
+    PrintHeader();
+    ArrayRef<uint8_t> Contents =
+        unwrapOrError(this->FileName, Obj.getSectionContents(Sec));
+    DataExtractor Data(Contents, Obj.isLE(), sizeof(Elf_Addr));
+    uint64_t Offset = 0;
+    while (Offset < Contents.size()) {
+      // The function address is followed by a ULEB representing the stack
+      // size. Check for an extra byte before we try to process the entry.
+      if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) {
+        reportUniqueWarning(
+            describe(Sec) +
+            " ended while trying to extract a stack size entry");
+        break;
+      }
+      uint64_t SymValue = Data.getAddress(&Offset);
+      if (!printFunctionStackSize(SymValue, /*FunctionSec=*/None, Sec, Data,
+                                  &Offset))
+        break;
+    }
+  }
+}
+
+template <class ELFT>
+void ELFDumper<ELFT>::printRelocatableStackSizes(
+    std::function<void()> PrintHeader) {
+  // Build a map between stack size sections and their corresponding relocation
+  // sections.
+  llvm::MapVector<const Elf_Shdr *, const Elf_Shdr *> StackSizeRelocMap;
+  for (const Elf_Shdr &Sec : cantFail(Obj.sections())) {
+    StringRef SectionName;
+    if (Expected<StringRef> NameOrErr = Obj.getSectionName(Sec))
+      SectionName = *NameOrErr;
+    else
+      consumeError(NameOrErr.takeError());
+
+    // A stack size section that we haven't encountered yet is mapped to the
+    // null section until we find its corresponding relocation section.
+    if (SectionName == ".stack_sizes")
+      if (StackSizeRelocMap
+              .insert(std::make_pair(&Sec, (const Elf_Shdr *)nullptr))
+              .second)
+        continue;
+
+    // Check relocation sections if they are relocating contents of a
+    // stack sizes section.
+    if (Sec.sh_type != ELF::SHT_RELA && Sec.sh_type != ELF::SHT_REL)
+      continue;
+
+    Expected<const Elf_Shdr *> RelSecOrErr = Obj.getSection(Sec.sh_info);
+    if (!RelSecOrErr) {
+      reportUniqueWarning(describe(Sec) +
+                          ": failed to get a relocated section: " +
+                          toString(RelSecOrErr.takeError()));
+      continue;
+    }
+
+    const Elf_Shdr *ContentsSec = *RelSecOrErr;
+    if (this->getPrintableSectionName(**RelSecOrErr) != ".stack_sizes")
+      continue;
+
+    // Insert a mapping from the stack sizes section to its relocation section.
+    StackSizeRelocMap[ContentsSec] = &Sec;
+  }
+
+  for (const auto &StackSizeMapEntry : StackSizeRelocMap) {
+    PrintHeader();
+    const Elf_Shdr *StackSizesELFSec = StackSizeMapEntry.first;
+    const Elf_Shdr *RelocSec = StackSizeMapEntry.second;
+
+    // Warn about stack size sections without a relocation section.
+    if (!RelocSec) {
+      reportWarning(createError(".stack_sizes (" + describe(*StackSizesELFSec) +
+                                ") does not have a corresponding "
+                                "relocation section"),
+                    FileName);
+      continue;
+    }
+
+    // A .stack_sizes section header's sh_link field is supposed to point
+    // to the section that contains the functions whose stack sizes are
+    // described in it.
+    const Elf_Shdr *FunctionSec = unwrapOrError(
+        this->FileName, Obj.getSection(StackSizesELFSec->sh_link));
+
+    SupportsRelocation IsSupportedFn;
+    RelocationResolver Resolver;
+    std::tie(IsSupportedFn, Resolver) = getRelocationResolver(this->ObjF);
+    ArrayRef<uint8_t> Contents =
+        unwrapOrError(this->FileName, Obj.getSectionContents(*StackSizesELFSec));
+    DataExtractor Data(Contents, Obj.isLE(), sizeof(Elf_Addr));
+
+    forEachRelocationDo(
+        *RelocSec, /*RawRelr=*/false,
+        [&](const Relocation<ELFT> &R, unsigned Ndx, const Elf_Shdr &Sec,
+            const Elf_Shdr *SymTab) {
+          if (!IsSupportedFn || !IsSupportedFn(R.Type)) {
+            reportUniqueWarning(
+                describe(*RelocSec) +
+                " contains an unsupported relocation with index " + Twine(Ndx) +
+                ": " + Obj.getRelocationTypeName(R.Type));
+            return;
+          }
+
+          this->printStackSize(R, *RelocSec, Ndx, SymTab, FunctionSec,
+                               *StackSizesELFSec, Resolver, Data);
+        },
+        [](const Elf_Relr &) {
+          llvm_unreachable("can't get here, because we only support "
+                           "SHT_REL/SHT_RELA sections");
+        });
+  }
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printStackSizes() {
+  bool HeaderHasBeenPrinted = false;
+  auto PrintHeader = [&]() {
+    if (HeaderHasBeenPrinted)
+      return;
+    OS << "\nStack Sizes:\n";
+    OS.PadToColumn(9);
+    OS << "Size";
+    OS.PadToColumn(18);
+    OS << "Function\n";
+    HeaderHasBeenPrinted = true;
+  };
+
+  // For non-relocatable objects, look directly for sections whose name starts
+  // with .stack_sizes and process the contents.
+  if (this->Obj.getHeader().e_type == ELF::ET_REL)
+    this->printRelocatableStackSizes(PrintHeader);
+  else
+    this->printNonRelocatableStackSizes(PrintHeader);
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
+  size_t Bias = ELFT::Is64Bits ? 8 : 0;
+  auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) {
+    OS.PadToColumn(2);
+    OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias);
+    OS.PadToColumn(11 + Bias);
+    OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)";
+    OS.PadToColumn(22 + Bias);
+    OS << format_hex_no_prefix(*E, 8 + Bias);
+    OS.PadToColumn(31 + 2 * Bias);
+    OS << Purpose << "\n";
+  };
+
+  OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n");
+  OS << " Canonical gp value: "
+     << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n";
+
+  OS << " Reserved entries:\n";
+  if (ELFT::Is64Bits)
+    OS << "           Address     Access          Initial Purpose\n";
+  else
+    OS << "   Address     Access  Initial Purpose\n";
+  PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver");
+  if (Parser.getGotModulePointer())
+    PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)");
+
+  if (!Parser.getLocalEntries().empty()) {
+    OS << "\n";
+    OS << " Local entries:\n";
+    if (ELFT::Is64Bits)
+      OS << "           Address     Access          Initial\n";
+    else
+      OS << "   Address     Access  Initial\n";
+    for (auto &E : Parser.getLocalEntries())
+      PrintEntry(&E, "");
+  }
+
+  if (Parser.IsStatic)
+    return;
+
+  if (!Parser.getGlobalEntries().empty()) {
+    OS << "\n";
+    OS << " Global entries:\n";
+    if (ELFT::Is64Bits)
+      OS << "           Address     Access          Initial         Sym.Val."
+         << " Type    Ndx Name\n";
+    else
+      OS << "   Address     Access  Initial Sym.Val. Type    Ndx Name\n";
+
+    DataRegion<Elf_Word> ShndxTable(
+        (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
+    for (auto &E : Parser.getGlobalEntries()) {
+      const Elf_Sym &Sym = *Parser.getGotSym(&E);
+      const Elf_Sym &FirstSym = this->dynamic_symbols()[0];
+      std::string SymName = this->getFullSymbolName(
+          Sym, &Sym - &FirstSym, ShndxTable, this->DynamicStringTable, false);
+
+      OS.PadToColumn(2);
+      OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias));
+      OS.PadToColumn(11 + Bias);
+      OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)";
+      OS.PadToColumn(22 + Bias);
+      OS << to_string(format_hex_no_prefix(E, 8 + Bias));
+      OS.PadToColumn(31 + 2 * Bias);
+      OS << to_string(format_hex_no_prefix(Sym.st_value, 8 + Bias));
+      OS.PadToColumn(40 + 3 * Bias);
+      OS << printEnum(Sym.getType(), makeArrayRef(ElfSymbolTypes));
+      OS.PadToColumn(48 + 3 * Bias);
+      OS << getSymbolSectionNdx(Sym, &Sym - this->dynamic_symbols().begin(),
+                                ShndxTable);
+      OS.PadToColumn(52 + 3 * Bias);
+      OS << SymName << "\n";
+    }
+  }
+
+  if (!Parser.getOtherEntries().empty())
+    OS << "\n Number of TLS and multi-GOT entries "
+       << Parser.getOtherEntries().size() << "\n";
+}
+
+template <class ELFT>
+void GNUELFDumper<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) {
+  size_t Bias = ELFT::Is64Bits ? 8 : 0;
+  auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) {
+    OS.PadToColumn(2);
+    OS << format_hex_no_prefix(Parser.getPltAddress(E), 8 + Bias);
+    OS.PadToColumn(11 + Bias);
+    OS << format_hex_no_prefix(*E, 8 + Bias);
+    OS.PadToColumn(20 + 2 * Bias);
+    OS << Purpose << "\n";
+  };
+
+  OS << "PLT GOT:\n\n";
+
+  OS << " Reserved entries:\n";
+  OS << "   Address  Initial Purpose\n";
+  PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver");
+  if (Parser.getPltModulePointer())
+    PrintEntry(Parser.getPltModulePointer(), "Module pointer");
+
+  if (!Parser.getPltEntries().empty()) {
+    OS << "\n";
+    OS << " Entries:\n";
+    OS << "   Address  Initial Sym.Val. Type    Ndx Name\n";
+    DataRegion<Elf_Word> ShndxTable(
+        (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
+    for (auto &E : Parser.getPltEntries()) {
+      const Elf_Sym &Sym = *Parser.getPltSym(&E);
+      const Elf_Sym &FirstSym = *cantFail(
+          this->Obj.template getEntry<Elf_Sym>(*Parser.getPltSymTable(), 0));
+      std::string SymName = this->getFullSymbolName(
+          Sym, &Sym - &FirstSym, ShndxTable, this->DynamicStringTable, false);
+
+      OS.PadToColumn(2);
+      OS << to_string(format_hex_no_prefix(Parser.getPltAddress(&E), 8 + Bias));
+      OS.PadToColumn(11 + Bias);
+      OS << to_string(format_hex_no_prefix(E, 8 + Bias));
+      OS.PadToColumn(20 + 2 * Bias);
+      OS << to_string(format_hex_no_prefix(Sym.st_value, 8 + Bias));
+      OS.PadToColumn(29 + 3 * Bias);
+      OS << printEnum(Sym.getType(), makeArrayRef(ElfSymbolTypes));
+      OS.PadToColumn(37 + 3 * Bias);
+      OS << getSymbolSectionNdx(Sym, &Sym - this->dynamic_symbols().begin(),
+                                ShndxTable);
+      OS.PadToColumn(41 + 3 * Bias);
+      OS << SymName << "\n";
+    }
+  }
+}
+
+template <class ELFT>
+Expected<const Elf_Mips_ABIFlags<ELFT> *>
+getMipsAbiFlagsSection(const ELFDumper<ELFT> &Dumper) {
+  const typename ELFT::Shdr *Sec = Dumper.findSectionByName(".MIPS.abiflags");
+  if (Sec == nullptr)
+    return nullptr;
+
+  constexpr StringRef ErrPrefix = "unable to read the .MIPS.abiflags section: ";
+  Expected<ArrayRef<uint8_t>> DataOrErr =
+      Dumper.getElfObject().getELFFile().getSectionContents(*Sec);
+  if (!DataOrErr)
+    return createError(ErrPrefix + toString(DataOrErr.takeError()));
+
+  if (DataOrErr->size() != sizeof(Elf_Mips_ABIFlags<ELFT>))
+    return createError(ErrPrefix + "it has a wrong size (" +
+        Twine(DataOrErr->size()) + ")");
+  return reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(DataOrErr->data());
+}
+
+template <class ELFT> void GNUELFDumper<ELFT>::printMipsABIFlags() {
+  const Elf_Mips_ABIFlags<ELFT> *Flags = nullptr;
+  if (Expected<const Elf_Mips_ABIFlags<ELFT> *> SecOrErr =
+          getMipsAbiFlagsSection(*this))
+    Flags = *SecOrErr;
+  else
+    this->reportUniqueWarning(SecOrErr.takeError());
+  if (!Flags)
+    return;
+
+  OS << "MIPS ABI Flags Version: " << Flags->version << "\n\n";
+  OS << "ISA: MIPS" << int(Flags->isa_level);
+  if (Flags->isa_rev > 1)
+    OS << "r" << int(Flags->isa_rev);
+  OS << "\n";
+  OS << "GPR size: " << getMipsRegisterSize(Flags->gpr_size) << "\n";
+  OS << "CPR1 size: " << getMipsRegisterSize(Flags->cpr1_size) << "\n";
+  OS << "CPR2 size: " << getMipsRegisterSize(Flags->cpr2_size) << "\n";
+  OS << "FP ABI: " << printEnum(Flags->fp_abi, makeArrayRef(ElfMipsFpABIType))
+     << "\n";
+  OS << "ISA Extension: "
+     << printEnum(Flags->isa_ext, makeArrayRef(ElfMipsISAExtType)) << "\n";
+  if (Flags->ases == 0)
+    OS << "ASEs: None\n";
+  else
+    // FIXME: Print each flag on a separate line.
+    OS << "ASEs: " << printFlags(Flags->ases, makeArrayRef(ElfMipsASEFlags))
+       << "\n";
+  OS << "FLAGS 1: " << format_hex_no_prefix(Flags->flags1, 8, false) << "\n";
+  OS << "FLAGS 2: " << format_hex_no_prefix(Flags->flags2, 8, false) << "\n";
+  OS << "\n";
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printFileHeaders() {
+  const Elf_Ehdr &E = this->Obj.getHeader();
+  {
+    DictScope D(W, "ElfHeader");
+    {
+      DictScope D(W, "Ident");
+      W.printBinary("Magic", makeArrayRef(E.e_ident).slice(ELF::EI_MAG0, 4));
+      W.printEnum("Class", E.e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass));
+      W.printEnum("DataEncoding", E.e_ident[ELF::EI_DATA],
+                  makeArrayRef(ElfDataEncoding));
+      W.printNumber("FileVersion", E.e_ident[ELF::EI_VERSION]);
+
+      auto OSABI = makeArrayRef(ElfOSABI);
+      if (E.e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH &&
+          E.e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) {
+        switch (E.e_machine) {
+        case ELF::EM_AMDGPU:
+          OSABI = makeArrayRef(AMDGPUElfOSABI);
+          break;
+        case ELF::EM_ARM:
+          OSABI = makeArrayRef(ARMElfOSABI);
+          break;
+        case ELF::EM_TI_C6000:
+          OSABI = makeArrayRef(C6000ElfOSABI);
+          break;
+        }
+      }
+      W.printEnum("OS/ABI", E.e_ident[ELF::EI_OSABI], OSABI);
+      W.printNumber("ABIVersion", E.e_ident[ELF::EI_ABIVERSION]);
+      W.printBinary("Unused", makeArrayRef(E.e_ident).slice(ELF::EI_PAD));
+    }
+
+    std::string TypeStr;
+    if (const EnumEntry<unsigned> *Ent = getObjectFileEnumEntry(E.e_type)) {
+      TypeStr = Ent->Name.str();
+    } else {
+      if (E.e_type >= ET_LOPROC)
+        TypeStr = "Processor Specific";
+      else if (E.e_type >= ET_LOOS)
+        TypeStr = "OS Specific";
+      else
+        TypeStr = "Unknown";
+    }
+    W.printString("Type", TypeStr + " (0x" + to_hexString(E.e_type) + ")");
+
+    W.printEnum("Machine", E.e_machine, makeArrayRef(ElfMachineType));
+    W.printNumber("Version", E.e_version);
+    W.printHex("Entry", E.e_entry);
+    W.printHex("ProgramHeaderOffset", E.e_phoff);
+    W.printHex("SectionHeaderOffset", E.e_shoff);
+    if (E.e_machine == EM_MIPS)
+      W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderMipsFlags),
+                   unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
+                   unsigned(ELF::EF_MIPS_MACH));
+    else if (E.e_machine == EM_AMDGPU)
+      W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderAMDGPUFlags),
+                   unsigned(ELF::EF_AMDGPU_MACH));
+    else if (E.e_machine == EM_RISCV)
+      W.printFlags("Flags", E.e_flags, makeArrayRef(ElfHeaderRISCVFlags));
+    else
+      W.printFlags("Flags", E.e_flags);
+    W.printNumber("HeaderSize", E.e_ehsize);
+    W.printNumber("ProgramHeaderEntrySize", E.e_phentsize);
+    W.printNumber("ProgramHeaderCount", E.e_phnum);
+    W.printNumber("SectionHeaderEntrySize", E.e_shentsize);
+    W.printString("SectionHeaderCount",
+                  getSectionHeadersNumString(this->Obj, this->FileName));
+    W.printString("StringTableSectionIndex",
+                  getSectionHeaderTableIndexString(this->Obj, this->FileName));
+  }
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printGroupSections() {
+  DictScope Lists(W, "Groups");
+  std::vector<GroupSection> V = this->getGroups();
+  DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V);
+  for (const GroupSection &G : V) {
+    DictScope D(W, "Group");
+    W.printNumber("Name", G.Name, G.ShName);
+    W.printNumber("Index", G.Index);
+    W.printNumber("Link", G.Link);
+    W.printNumber("Info", G.Info);
+    W.printHex("Type", getGroupType(G.Type), G.Type);
+    W.startLine() << "Signature: " << G.Signature << "\n";
+
+    ListScope L(W, "Section(s) in group");
+    for (const GroupMember &GM : G.Members) {
+      const GroupSection *MainGroup = Map[GM.Index];
+      if (MainGroup != &G)
+        this->reportUniqueWarning(
+            "section with index " + Twine(GM.Index) +
+            ", included in the group section with index " +
+            Twine(MainGroup->Index) +
+            ", was also found in the group section with index " +
+            Twine(G.Index));
+      W.startLine() << GM.Name << " (" << GM.Index << ")\n";
+    }
+  }
+
+  if (V.empty())
+    W.startLine() << "There are no group sections in the file.\n";
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printRelocations() {
+  ListScope D(W, "Relocations");
+
+  for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) {
+    if (!isRelocationSec<ELFT>(Sec))
+      continue;
+
+    StringRef Name = this->getPrintableSectionName(Sec);
+    unsigned SecNdx = &Sec - &cantFail(this->Obj.sections()).front();
+    W.startLine() << "Section (" << SecNdx << ") " << Name << " {\n";
+    W.indent();
+    this->printRelocationsHelper(Sec);
+    W.unindent();
+    W.startLine() << "}\n";
+  }
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printRelrReloc(const Elf_Relr &R) {
+  W.startLine() << W.hex(R) << "\n";
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printRelRelaReloc(const Relocation<ELFT> &R,
+                                            const RelSymbol<ELFT> &RelSym) {
+  StringRef SymbolName = RelSym.Name;
+  SmallString<32> RelocName;
+  this->Obj.getRelocationTypeName(R.Type, RelocName);
+
+  if (opts::ExpandRelocs) {
+    DictScope Group(W, "Relocation");
+    W.printHex("Offset", R.Offset);
+    W.printNumber("Type", RelocName, R.Type);
+    W.printNumber("Symbol", !SymbolName.empty() ? SymbolName : "-", R.Symbol);
+    if (R.Addend)
+      W.printHex("Addend", (uintX_t)*R.Addend);
+  } else {
+    raw_ostream &OS = W.startLine();
+    OS << W.hex(R.Offset) << " " << RelocName << " "
+       << (!SymbolName.empty() ? SymbolName : "-");
+    if (R.Addend)
+      OS << " " << W.hex((uintX_t)*R.Addend);
+    OS << "\n";
+  }
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printSectionHeaders() {
+  ListScope SectionsD(W, "Sections");
+
+  int SectionIndex = -1;
+  std::vector<EnumEntry<unsigned>> FlagsList =
+      getSectionFlagsForTarget(this->Obj.getHeader().e_machine);
+  for (const Elf_Shdr &Sec : cantFail(this->Obj.sections())) {
+    DictScope SectionD(W, "Section");
+    W.printNumber("Index", ++SectionIndex);
+    W.printNumber("Name", this->getPrintableSectionName(Sec), Sec.sh_name);
+    W.printHex("Type",
+               object::getELFSectionTypeName(this->Obj.getHeader().e_machine,
+                                             Sec.sh_type),
+               Sec.sh_type);
+    W.printFlags("Flags", Sec.sh_flags, makeArrayRef(FlagsList));
+    W.printHex("Address", Sec.sh_addr);
+    W.printHex("Offset", Sec.sh_offset);
+    W.printNumber("Size", Sec.sh_size);
+    W.printNumber("Link", Sec.sh_link);
+    W.printNumber("Info", Sec.sh_info);
+    W.printNumber("AddressAlignment", Sec.sh_addralign);
+    W.printNumber("EntrySize", Sec.sh_entsize);
+
+    if (opts::SectionRelocations) {
+      ListScope D(W, "Relocations");
+      this->printRelocationsHelper(Sec);
+    }
+
+    if (opts::SectionSymbols) {
+      ListScope D(W, "Symbols");
+      if (this->DotSymtabSec) {
+        StringRef StrTable = unwrapOrError(
+            this->FileName,
+            this->Obj.getStringTableForSymtab(*this->DotSymtabSec));
+        ArrayRef<Elf_Word> ShndxTable = this->getShndxTable(this->DotSymtabSec);
+
+        typename ELFT::SymRange Symbols = unwrapOrError(
+            this->FileName, this->Obj.symbols(this->DotSymtabSec));
+        for (const Elf_Sym &Sym : Symbols) {
+          const Elf_Shdr *SymSec = unwrapOrError(
+              this->FileName,
+              this->Obj.getSection(Sym, this->DotSymtabSec, ShndxTable));
+          if (SymSec == &Sec)
+            printSymbol(Sym, &Sym - &Symbols[0], ShndxTable, StrTable, false,
+                        false);
+        }
+      }
+    }
+
+    if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) {
+      ArrayRef<uint8_t> Data =
+          unwrapOrError(this->FileName, this->Obj.getSectionContents(Sec));
+      W.printBinaryBlock(
+          "SectionData",
+          StringRef(reinterpret_cast<const char *>(Data.data()), Data.size()));
+    }
+  }
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printSymbolSection(
+    const Elf_Sym &Symbol, unsigned SymIndex,
+    DataRegion<Elf_Word> ShndxTable) const {
+  auto GetSectionSpecialType = [&]() -> Optional<StringRef> {
+    if (Symbol.isUndefined())
+      return StringRef("Undefined");
+    if (Symbol.isProcessorSpecific())
+      return StringRef("Processor Specific");
+    if (Symbol.isOSSpecific())
+      return StringRef("Operating System Specific");
+    if (Symbol.isAbsolute())
+      return StringRef("Absolute");
+    if (Symbol.isCommon())
+      return StringRef("Common");
+    if (Symbol.isReserved() && Symbol.st_shndx != SHN_XINDEX)
+      return StringRef("Reserved");
+    return None;
+  };
+
+  if (Optional<StringRef> Type = GetSectionSpecialType()) {
+    W.printHex("Section", *Type, Symbol.st_shndx);
+    return;
+  }
+
+  Expected<unsigned> SectionIndex =
+      this->getSymbolSectionIndex(Symbol, SymIndex, ShndxTable);
+  if (!SectionIndex) {
+    assert(Symbol.st_shndx == SHN_XINDEX &&
+           "getSymbolSectionIndex should only fail due to an invalid "
+           "SHT_SYMTAB_SHNDX table/reference");
+    this->reportUniqueWarning(SectionIndex.takeError());
+    W.printHex("Section", "Reserved", SHN_XINDEX);
+    return;
+  }
+
+  Expected<StringRef> SectionName =
+      this->getSymbolSectionName(Symbol, *SectionIndex);
+  if (!SectionName) {
+    // Don't report an invalid section name if the section headers are missing.
+    // In such situations, all sections will be "invalid".
+    if (!this->ObjF.sections().empty())
+      this->reportUniqueWarning(SectionName.takeError());
+    else
+      consumeError(SectionName.takeError());
+    W.printHex("Section", "<?>", *SectionIndex);
+  } else {
+    W.printHex("Section", *SectionName, *SectionIndex);
+  }
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printSymbol(const Elf_Sym &Symbol, unsigned SymIndex,
+                                      DataRegion<Elf_Word> ShndxTable,
+                                      Optional<StringRef> StrTable,
+                                      bool IsDynamic,
+                                      bool /*NonVisibilityBitsUsed*/) const {
+  std::string FullSymbolName = this->getFullSymbolName(
+      Symbol, SymIndex, ShndxTable, StrTable, IsDynamic);
+  unsigned char SymbolType = Symbol.getType();
+
+  DictScope D(W, "Symbol");
+  W.printNumber("Name", FullSymbolName, Symbol.st_name);
+  W.printHex("Value", Symbol.st_value);
+  W.printNumber("Size", Symbol.st_size);
+  W.printEnum("Binding", Symbol.getBinding(), makeArrayRef(ElfSymbolBindings));
+  if (this->Obj.getHeader().e_machine == ELF::EM_AMDGPU &&
+      SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
+    W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes));
+  else
+    W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes));
+  if (Symbol.st_other == 0)
+    // Usually st_other flag is zero. Do not pollute the output
+    // by flags enumeration in that case.
+    W.printNumber("Other", 0);
+  else {
+    std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags),
+                                                   std::end(ElfSymOtherFlags));
+    if (this->Obj.getHeader().e_machine == EM_MIPS) {
+      // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16
+      // flag overlapped with other ST_MIPS_xxx flags. So consider both
+      // cases separately.
+      if ((Symbol.st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16)
+        SymOtherFlags.insert(SymOtherFlags.end(),
+                             std::begin(ElfMips16SymOtherFlags),
+                             std::end(ElfMips16SymOtherFlags));
+      else
+        SymOtherFlags.insert(SymOtherFlags.end(),
+                             std::begin(ElfMipsSymOtherFlags),
+                             std::end(ElfMipsSymOtherFlags));
+    } else if (this->Obj.getHeader().e_machine == EM_AARCH64) {
+      SymOtherFlags.insert(SymOtherFlags.end(),
+                           std::begin(ElfAArch64SymOtherFlags),
+                           std::end(ElfAArch64SymOtherFlags));
+    }
+    W.printFlags("Other", Symbol.st_other, makeArrayRef(SymOtherFlags), 0x3u);
+  }
+  printSymbolSection(Symbol, SymIndex, ShndxTable);
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printSymbols(bool PrintSymbols,
+                                       bool PrintDynamicSymbols) {
+  if (PrintSymbols) {
+    ListScope Group(W, "Symbols");
+    this->printSymbolsHelper(false);
+  }
+  if (PrintDynamicSymbols) {
+    ListScope Group(W, "DynamicSymbols");
+    this->printSymbolsHelper(true);
+  }
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printDynamicTable() {
+  Elf_Dyn_Range Table = this->dynamic_table();
+  if (Table.empty())
+    return;
+
+  W.startLine() << "DynamicSection [ (" << Table.size() << " entries)\n";
+
+  size_t MaxTagSize = getMaxDynamicTagSize(this->Obj, Table);
+  // The "Name/Value" column should be indented from the "Type" column by N
+  // spaces, where N = MaxTagSize - length of "Type" (4) + trailing
+  // space (1) = -3.
+  W.startLine() << "  Tag" << std::string(ELFT::Is64Bits ? 16 : 8, ' ')
+                << "Type" << std::string(MaxTagSize - 3, ' ') << "Name/Value\n";
+
+  std::string ValueFmt = "%-" + std::to_string(MaxTagSize) + "s ";
+  for (auto Entry : Table) {
+    uintX_t Tag = Entry.getTag();
+    std::string Value = this->getDynamicEntry(Tag, Entry.getVal());
+    W.startLine() << "  " << format_hex(Tag, ELFT::Is64Bits ? 18 : 10, true)
+                  << " "
+                  << format(ValueFmt.c_str(),
+                            this->Obj.getDynamicTagAsString(Tag).c_str())
+                  << Value << "\n";
+  }
+  W.startLine() << "]\n";
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printDynamicRelocations() {
+  W.startLine() << "Dynamic Relocations {\n";
+  W.indent();
+  this->printDynamicRelocationsHelper();
+  W.unindent();
+  W.startLine() << "}\n";
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printProgramHeaders(
+    bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) {
+  if (PrintProgramHeaders)
+    printProgramHeaders();
+  if (PrintSectionMapping == cl::BOU_TRUE)
+    printSectionMapping();
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printProgramHeaders() {
+  ListScope L(W, "ProgramHeaders");
+
+  Expected<ArrayRef<Elf_Phdr>> PhdrsOrErr = this->Obj.program_headers();
+  if (!PhdrsOrErr) {
+    this->reportUniqueWarning("unable to dump program headers: " +
+                              toString(PhdrsOrErr.takeError()));
+    return;
+  }
+
+  for (const Elf_Phdr &Phdr : *PhdrsOrErr) {
+    DictScope P(W, "ProgramHeader");
+    StringRef Type =
+        segmentTypeToString(this->Obj.getHeader().e_machine, Phdr.p_type);
+
+    W.printHex("Type", Type.empty() ? "Unknown" : Type, Phdr.p_type);
+    W.printHex("Offset", Phdr.p_offset);
+    W.printHex("VirtualAddress", Phdr.p_vaddr);
+    W.printHex("PhysicalAddress", Phdr.p_paddr);
+    W.printNumber("FileSize", Phdr.p_filesz);
+    W.printNumber("MemSize", Phdr.p_memsz);
+    W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags));
+    W.printNumber("Alignment", Phdr.p_align);
+  }
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printVersionSymbolSection(const Elf_Shdr *Sec) {
+  ListScope SS(W, "VersionSymbols");
+  if (!Sec)
+    return;
+
+  StringRef StrTable;
+  ArrayRef<Elf_Sym> Syms;
+  const Elf_Shdr *SymTabSec;
+  Expected<ArrayRef<Elf_Versym>> VerTableOrErr =
+      this->getVersionTable(*Sec, &Syms, &StrTable, &SymTabSec);
+  if (!VerTableOrErr) {
+    this->reportUniqueWarning(VerTableOrErr.takeError());
+    return;
+  }
+
+  if (StrTable.empty() || Syms.empty() || Syms.size() != VerTableOrErr->size())
+    return;
+
+  ArrayRef<Elf_Word> ShNdxTable = this->getShndxTable(SymTabSec);
+  for (size_t I = 0, E = Syms.size(); I < E; ++I) {
+    DictScope S(W, "Symbol");
+    W.printNumber("Version", (*VerTableOrErr)[I].vs_index & VERSYM_VERSION);
+    W.printString("Name",
+                  this->getFullSymbolName(Syms[I], I, ShNdxTable, StrTable,
+                                          /*IsDynamic=*/true));
+  }
+}
+
+static const EnumEntry<unsigned> SymVersionFlags[] = {
+    {"Base", "BASE", VER_FLG_BASE},
+    {"Weak", "WEAK", VER_FLG_WEAK},
+    {"Info", "INFO", VER_FLG_INFO}};
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printVersionDefinitionSection(const Elf_Shdr *Sec) {
+  ListScope SD(W, "VersionDefinitions");
+  if (!Sec)
+    return;
+
+  Expected<std::vector<VerDef>> V = this->Obj.getVersionDefinitions(*Sec);
+  if (!V) {
+    this->reportUniqueWarning(V.takeError());
+    return;
+  }
+
+  for (const VerDef &D : *V) {
+    DictScope Def(W, "Definition");
+    W.printNumber("Version", D.Version);
+    W.printFlags("Flags", D.Flags, makeArrayRef(SymVersionFlags));
+    W.printNumber("Index", D.Ndx);
+    W.printNumber("Hash", D.Hash);
+    W.printString("Name", D.Name.c_str());
+    W.printList(
+        "Predecessors", D.AuxV,
+        [](raw_ostream &OS, const VerdAux &Aux) { OS << Aux.Name.c_str(); });
+  }
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printVersionDependencySection(const Elf_Shdr *Sec) {
+  ListScope SD(W, "VersionRequirements");
+  if (!Sec)
+    return;
+
+  Expected<std::vector<VerNeed>> V =
+      this->Obj.getVersionDependencies(*Sec, this->WarningHandler);
+  if (!V) {
+    this->reportUniqueWarning(V.takeError());
+    return;
+  }
+
+  for (const VerNeed &VN : *V) {
+    DictScope Entry(W, "Dependency");
+    W.printNumber("Version", VN.Version);
+    W.printNumber("Count", VN.Cnt);
+    W.printString("FileName", VN.File.c_str());
+
+    ListScope L(W, "Entries");
+    for (const VernAux &Aux : VN.AuxV) {
+      DictScope Entry(W, "Entry");
+      W.printNumber("Hash", Aux.Hash);
+      W.printFlags("Flags", Aux.Flags, makeArrayRef(SymVersionFlags));
+      W.printNumber("Index", Aux.Other);
+      W.printString("Name", Aux.Name.c_str());
+    }
+  }
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printHashHistograms() {
+  W.startLine() << "Hash Histogram not implemented!\n";
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printCGProfile() {
+  ListScope L(W, "CGProfile");
+  if (!this->DotCGProfileSec)
+    return;
+
+  Expected<ArrayRef<Elf_CGProfile>> CGProfileOrErr =
+      this->Obj.template getSectionContentsAsArray<Elf_CGProfile>(
+          *this->DotCGProfileSec);
+  if (!CGProfileOrErr) {
+    this->reportUniqueWarning(
+        "unable to dump the SHT_LLVM_CALL_GRAPH_PROFILE section: " +
+        toString(CGProfileOrErr.takeError()));
+    return;
+  }
+
+  for (const Elf_CGProfile &CGPE : *CGProfileOrErr) {
+    DictScope D(W, "CGProfileEntry");
+    W.printNumber("From", this->getStaticSymbolName(CGPE.cgp_from),
+                  CGPE.cgp_from);
+    W.printNumber("To", this->getStaticSymbolName(CGPE.cgp_to),
+                  CGPE.cgp_to);
+    W.printNumber("Weight", CGPE.cgp_weight);
+  }
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printAddrsig() {
+  ListScope L(W, "Addrsig");
+  if (!this->DotAddrsigSec)
+    return;
+
+  Expected<std::vector<uint64_t>> SymsOrErr =
+      decodeAddrsigSection(this->Obj, *this->DotAddrsigSec);
+  if (!SymsOrErr) {
+    this->reportUniqueWarning(SymsOrErr.takeError());
+    return;
+  }
+
+  for (uint64_t Sym : *SymsOrErr)
+    W.printNumber("Sym", this->getStaticSymbolName(Sym), Sym);
+}
+
+template <typename ELFT>
+static void printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc,
+                                  ScopedPrinter &W) {
+  switch (NoteType) {
+  default:
+    return;
+  case ELF::NT_GNU_ABI_TAG: {
+    const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
+    if (!AbiTag.IsValid) {
+      W.printString("ABI", "<corrupt GNU_ABI_TAG>");
+    } else {
+      W.printString("OS", AbiTag.OSName);
+      W.printString("ABI", AbiTag.ABI);
+    }
+    break;
+  }
+  case ELF::NT_GNU_BUILD_ID: {
+    W.printString("Build ID", getGNUBuildId(Desc));
+    break;
+  }
+  case ELF::NT_GNU_GOLD_VERSION:
+    W.printString("Version", getGNUGoldVersion(Desc));
+    break;
+  case ELF::NT_GNU_PROPERTY_TYPE_0:
+    ListScope D(W, "Property");
+    for (const std::string &Property : getGNUPropertyList<ELFT>(Desc))
+      W.printString(Property);
+    break;
+  }
+}
+
+static void printCoreNoteLLVMStyle(const CoreNote &Note, ScopedPrinter &W) {
+  W.printNumber("Page Size", Note.PageSize);
+  for (const CoreFileMapping &Mapping : Note.Mappings) {
+    ListScope D(W, "Mapping");
+    W.printHex("Start", Mapping.Start);
+    W.printHex("End", Mapping.End);
+    W.printHex("Offset", Mapping.Offset);
+    W.printString("Filename", Mapping.Filename);
+  }
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printNotes() {
+  ListScope L(W, "Notes");
+
+  std::unique_ptr<DictScope> NoteScope;
+  auto StartNotes = [&](Optional<StringRef> SecName,
+                        const typename ELFT::Off Offset,
+                        const typename ELFT::Addr Size) {
+    NoteScope = std::make_unique<DictScope>(W, "NoteSection");
+    W.printString("Name", SecName ? *SecName : "<?>");
+    W.printHex("Offset", Offset);
+    W.printHex("Size", Size);
+  };
+
+  auto EndNotes = [&] { NoteScope.reset(); };
+
+  auto ProcessNote = [&](const Elf_Note &Note) -> Error {
+    DictScope D2(W, "Note");
+    StringRef Name = Note.getName();
+    ArrayRef<uint8_t> Descriptor = Note.getDesc();
+    Elf_Word Type = Note.getType();
+
+    // Print the note owner/type.
+    W.printString("Owner", Name);
+    W.printHex("Data size", Descriptor.size());
+
+    StringRef NoteType =
+        getNoteTypeName<ELFT>(Note, this->Obj.getHeader().e_type);
+    if (!NoteType.empty())
+      W.printString("Type", NoteType);
+    else
+      W.printString("Type",
+                    "Unknown (" + to_string(format_hex(Type, 10)) + ")");
+
+    // Print the description, or fallback to printing raw bytes for unknown
+    // owners.
+    if (Name == "GNU") {
+      printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W);
+    } else if (Name == "AMD") {
+      const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
+      if (!N.Type.empty())
+        W.printString(N.Type, N.Value);
+    } else if (Name == "AMDGPU") {
+      const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
+      if (!N.Type.empty())
+        W.printString(N.Type, N.Value);
+    } else if (Name == "CORE") {
+      if (Type == ELF::NT_FILE) {
+        DataExtractor DescExtractor(Descriptor,
+                                    ELFT::TargetEndianness == support::little,
+                                    sizeof(Elf_Addr));
+        if (Expected<CoreNote> Note = readCoreNote(DescExtractor))
+          printCoreNoteLLVMStyle(*Note, W);
+        else
+          return Note.takeError();
+      }
+    } else if (!Descriptor.empty()) {
+      W.printBinaryBlock("Description data", Descriptor);
+    }
+    return Error::success();
+  };
+
+  printNotesHelper(*this, StartNotes, ProcessNote, EndNotes);
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printELFLinkerOptions() {
+  ListScope L(W, "LinkerOptions");
+
+  unsigned I = -1;
+  for (const Elf_Shdr &Shdr : cantFail(this->Obj.sections())) {
+    ++I;
+    if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS)
+      continue;
+
+    Expected<ArrayRef<uint8_t>> ContentsOrErr =
+        this->Obj.getSectionContents(Shdr);
+    if (!ContentsOrErr) {
+      this->reportUniqueWarning("unable to read the content of the "
+                                "SHT_LLVM_LINKER_OPTIONS section: " +
+                                toString(ContentsOrErr.takeError()));
+      continue;
+    }
+    if (ContentsOrErr->empty())
+      continue;
+
+    if (ContentsOrErr->back() != 0) {
+      this->reportUniqueWarning("SHT_LLVM_LINKER_OPTIONS section at index " +
+                                Twine(I) +
+                                " is broken: the "
+                                "content is not null-terminated");
+      continue;
+    }
+
+    SmallVector<StringRef, 16> Strings;
+    toStringRef(ContentsOrErr->drop_back()).split(Strings, '\0');
+    if (Strings.size() % 2 != 0) {
+      this->reportUniqueWarning(
+          "SHT_LLVM_LINKER_OPTIONS section at index " + Twine(I) +
+          " is broken: an incomplete "
+          "key-value pair was found. The last possible key was: \"" +
+          Strings.back() + "\"");
+      continue;
+    }
+
+    for (size_t I = 0; I < Strings.size(); I += 2)
+      W.printString(Strings[I], Strings[I + 1]);
+  }
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printDependentLibs() {
+  ListScope L(W, "DependentLibs");
+  this->printDependentLibsHelper(
+      [](const Elf_Shdr &) {},
+      [this](StringRef Lib, uint64_t) { W.printString(Lib); });
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printStackSizes() {
+  ListScope L(W, "StackSizes");
+  if (this->Obj.getHeader().e_type == ELF::ET_REL)
+    this->printRelocatableStackSizes([]() {});
+  else
+    this->printNonRelocatableStackSizes([]() {});
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) {
+  DictScope D(W, "Entry");
+  W.printString("Function", FuncName);
+  W.printHex("Size", Size);
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
+  auto PrintEntry = [&](const Elf_Addr *E) {
+    W.printHex("Address", Parser.getGotAddress(E));
+    W.printNumber("Access", Parser.getGotOffset(E));
+    W.printHex("Initial", *E);
+  };
+
+  DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT");
+
+  W.printHex("Canonical gp value", Parser.getGp());
+  {
+    ListScope RS(W, "Reserved entries");
+    {
+      DictScope D(W, "Entry");
+      PrintEntry(Parser.getGotLazyResolver());
+      W.printString("Purpose", StringRef("Lazy resolver"));
+    }
+
+    if (Parser.getGotModulePointer()) {
+      DictScope D(W, "Entry");
+      PrintEntry(Parser.getGotModulePointer());
+      W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
+    }
+  }
+  {
+    ListScope LS(W, "Local entries");
+    for (auto &E : Parser.getLocalEntries()) {
+      DictScope D(W, "Entry");
+      PrintEntry(&E);
+    }
+  }
+
+  if (Parser.IsStatic)
+    return;
+
+  {
+    ListScope GS(W, "Global entries");
+    for (auto &E : Parser.getGlobalEntries()) {
+      DictScope D(W, "Entry");
+
+      PrintEntry(&E);
+
+      const Elf_Sym &Sym = *Parser.getGotSym(&E);
+      W.printHex("Value", Sym.st_value);
+      W.printEnum("Type", Sym.getType(), makeArrayRef(ElfSymbolTypes));
+
+      const unsigned SymIndex = &Sym - this->dynamic_symbols().begin();
+      DataRegion<Elf_Word> ShndxTable(
+          (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
+      printSymbolSection(Sym, SymIndex, ShndxTable);
+
+      std::string SymName = this->getFullSymbolName(
+          Sym, SymIndex, ShndxTable, this->DynamicStringTable, true);
+      W.printNumber("Name", SymName, Sym.st_name);
+    }
+  }
+
+  W.printNumber("Number of TLS and multi-GOT entries",
+                uint64_t(Parser.getOtherEntries().size()));
+}
+
+template <class ELFT>
+void LLVMELFDumper<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) {
+  auto PrintEntry = [&](const Elf_Addr *E) {
+    W.printHex("Address", Parser.getPltAddress(E));
+    W.printHex("Initial", *E);
+  };
+
+  DictScope GS(W, "PLT GOT");
+
+  {
+    ListScope RS(W, "Reserved entries");
+    {
+      DictScope D(W, "Entry");
+      PrintEntry(Parser.getPltLazyResolver());
+      W.printString("Purpose", StringRef("PLT lazy resolver"));
+    }
+
+    if (auto E = Parser.getPltModulePointer()) {
+      DictScope D(W, "Entry");
+      PrintEntry(E);
+      W.printString("Purpose", StringRef("Module pointer"));
+    }
+  }
+  {
+    ListScope LS(W, "Entries");
+    DataRegion<Elf_Word> ShndxTable(
+        (const Elf_Word *)this->DynSymTabShndxRegion.Addr, this->Obj.end());
+    for (auto &E : Parser.getPltEntries()) {
+      DictScope D(W, "Entry");
+      PrintEntry(&E);
+
+      const Elf_Sym &Sym = *Parser.getPltSym(&E);
+      W.printHex("Value", Sym.st_value);
+      W.printEnum("Type", Sym.getType(), makeArrayRef(ElfSymbolTypes));
+      printSymbolSection(Sym, &Sym - this->dynamic_symbols().begin(),
+                         ShndxTable);
+
+      const Elf_Sym *FirstSym = cantFail(
+          this->Obj.template getEntry<Elf_Sym>(*Parser.getPltSymTable(), 0));
+      std::string SymName = this->getFullSymbolName(
+          Sym, &Sym - FirstSym, ShndxTable, Parser.getPltStrTable(), true);
+      W.printNumber("Name", SymName, Sym.st_name);
+    }
+  }
+}
+
+template <class ELFT> void LLVMELFDumper<ELFT>::printMipsABIFlags() {
+  const Elf_Mips_ABIFlags<ELFT> *Flags;
+  if (Expected<const Elf_Mips_ABIFlags<ELFT> *> SecOrErr =
+          getMipsAbiFlagsSection(*this)) {
+    Flags = *SecOrErr;
+    if (!Flags) {
+      W.startLine() << "There is no .MIPS.abiflags section in the file.\n";
+      return;
+    }
+  } else {
+    this->reportUniqueWarning(SecOrErr.takeError());
+    return;
+  }
+
+  raw_ostream &OS = W.getOStream();
+  DictScope GS(W, "MIPS ABI Flags");
+
+  W.printNumber("Version", Flags->version);
+  W.startLine() << "ISA: ";
+  if (Flags->isa_rev <= 1)
+    OS << format("MIPS%u", Flags->isa_level);
+  else
+    OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev);
+  OS << "\n";
+  W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType));
+  W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags));
+  W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType));
+  W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size));
+  W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size));
+  W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size));
+  W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1));
+  W.printHex("Flags 2", Flags->flags2);
+}
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/MachODumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/MachODumper.cpp
new file mode 100644
index 0000000000..c13b1f3bf2
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/MachODumper.cpp
@@ -0,0 +1,890 @@
+//===- MachODumper.cpp - Object file dumping utility for llvm -------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the MachO-specific dumper for llvm-readobj.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ObjDumper.h"
+#include "StackMapPrinter.h"
+#include "llvm-readobj.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Object/MachO.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+using namespace llvm;
+using namespace object;
+
+namespace {
+
+class MachODumper : public ObjDumper {
+public:
+  MachODumper(const MachOObjectFile *Obj, ScopedPrinter &Writer)
+      : ObjDumper(Writer, Obj->getFileName()), Obj(Obj) {}
+
+  void printFileHeaders() override;
+  void printSectionHeaders() override;
+  void printRelocations() override;
+  void printUnwindInfo() override;
+  void printStackMap() const override;
+
+  void printNeededLibraries() override;
+
+  // MachO-specific.
+  void printMachODataInCode() override;
+  void printMachOVersionMin() override;
+  void printMachODysymtab() override;
+  void printMachOSegment() override;
+  void printMachOIndirectSymbols() override;
+  void printMachOLinkerOptions () override;
+
+private:
+  template<class MachHeader>
+  void printFileHeaders(const MachHeader &Header);
+
+  void printSymbols() override;
+  void printDynamicSymbols() override;
+  void printSymbol(const SymbolRef &Symbol);
+
+  void printRelocation(const RelocationRef &Reloc);
+
+  void printRelocation(const MachOObjectFile *Obj, const RelocationRef &Reloc);
+
+  void printSectionHeaders(const MachOObjectFile *Obj);
+
+  const MachOObjectFile *Obj;
+};
+
+} // namespace
+
+
+namespace llvm {
+
+std::unique_ptr<ObjDumper> createMachODumper(const object::MachOObjectFile &Obj,
+                                             ScopedPrinter &Writer) {
+  return std::make_unique<MachODumper>(&Obj, Writer);
+}
+
+} // namespace llvm
+
+static const EnumEntry<uint32_t> MachOMagics[] = {
+  { "Magic",      MachO::MH_MAGIC    },
+  { "Cigam",      MachO::MH_CIGAM    },
+  { "Magic64",    MachO::MH_MAGIC_64 },
+  { "Cigam64",    MachO::MH_CIGAM_64 },
+  { "FatMagic",   MachO::FAT_MAGIC   },
+  { "FatCigam",   MachO::FAT_CIGAM   },
+};
+
+static const EnumEntry<uint32_t> MachOHeaderFileTypes[] = {
+  { "Relocatable",          MachO::MH_OBJECT      },
+  { "Executable",           MachO::MH_EXECUTE     },
+  { "FixedVMLibrary",       MachO::MH_FVMLIB      },
+  { "Core",                 MachO::MH_CORE        },
+  { "PreloadedExecutable",  MachO::MH_PRELOAD     },
+  { "DynamicLibrary",       MachO::MH_DYLIB       },
+  { "DynamicLinker",        MachO::MH_DYLINKER    },
+  { "Bundle",               MachO::MH_BUNDLE      },
+  { "DynamicLibraryStub",   MachO::MH_DYLIB_STUB  },
+  { "DWARFSymbol",          MachO::MH_DSYM        },
+  { "KextBundle",           MachO::MH_KEXT_BUNDLE },
+};
+
+static const EnumEntry<uint32_t> MachOHeaderCpuTypes[] = {
+  { "Any"       , static_cast<uint32_t>(MachO::CPU_TYPE_ANY) },
+  { "X86"       , MachO::CPU_TYPE_X86       },
+  { "X86-64"    , MachO::CPU_TYPE_X86_64    },
+  { "Mc98000"   , MachO::CPU_TYPE_MC98000   },
+  { "Arm"       , MachO::CPU_TYPE_ARM       },
+  { "Arm64"     , MachO::CPU_TYPE_ARM64     },
+  { "Sparc"     , MachO::CPU_TYPE_SPARC     },
+  { "PowerPC"   , MachO::CPU_TYPE_POWERPC   },
+  { "PowerPC64" , MachO::CPU_TYPE_POWERPC64 },
+};
+
+static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesX86[] = {
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_I386_ALL),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_386),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_486),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_486SX),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_586),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTPRO),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTII_M3),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTII_M5),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_CELERON),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_CELERON_MOBILE),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3_M),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_3_XEON),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_M),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_4),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_PENTIUM_4_M),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ITANIUM),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ITANIUM_2),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_XEON),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_XEON_MP),
+};
+
+static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesX64[] = {
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_64_ALL),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_ARCH1),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_X86_64_H),
+};
+
+static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM[] = {
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_ALL),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V4T),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V6),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V5),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V5TEJ),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_XSCALE),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7S),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7K),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V6M),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7M),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM_V7EM),
+};
+
+static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesARM64[] = {
+    LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_ALL),
+    LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64_V8),
+    LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_ARM64E),
+};
+
+static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesSPARC[] = {
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_SPARC_ALL),
+};
+
+static const EnumEntry<uint32_t> MachOHeaderCpuSubtypesPPC[] = {
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_ALL),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_601),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_602),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603e),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_603ev),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_604),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_604e),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_620),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_750),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_7400),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_7450),
+  LLVM_READOBJ_ENUM_ENT(MachO, CPU_SUBTYPE_POWERPC_970),
+};
+
+static const EnumEntry<uint32_t> MachOHeaderFlags[] = {
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_NOUNDEFS),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_INCRLINK),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_DYLDLINK),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_BINDATLOAD),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_PREBOUND),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_SPLIT_SEGS),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_LAZY_INIT),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_TWOLEVEL),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_FORCE_FLAT),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_NOMULTIDEFS),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_NOFIXPREBINDING),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_PREBINDABLE),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_ALLMODSBOUND),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_SUBSECTIONS_VIA_SYMBOLS),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_CANONICAL),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_WEAK_DEFINES),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_BINDS_TO_WEAK),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_ALLOW_STACK_EXECUTION),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_ROOT_SAFE),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_SETUID_SAFE),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_NO_REEXPORTED_DYLIBS),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_PIE),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_DEAD_STRIPPABLE_DYLIB),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_HAS_TLV_DESCRIPTORS),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_NO_HEAP_EXECUTION),
+  LLVM_READOBJ_ENUM_ENT(MachO, MH_APP_EXTENSION_SAFE),
+};
+
+static const EnumEntry<unsigned> MachOSectionTypes[] = {
+  { "Regular"                        , MachO::S_REGULAR },
+  { "ZeroFill"                       , MachO::S_ZEROFILL },
+  { "CStringLiterals"                , MachO::S_CSTRING_LITERALS },
+  { "4ByteLiterals"                  , MachO::S_4BYTE_LITERALS },
+  { "8ByteLiterals"                  , MachO::S_8BYTE_LITERALS },
+  { "LiteralPointers"                , MachO::S_LITERAL_POINTERS },
+  { "NonLazySymbolPointers"          , MachO::S_NON_LAZY_SYMBOL_POINTERS },
+  { "LazySymbolPointers"             , MachO::S_LAZY_SYMBOL_POINTERS },
+  { "SymbolStubs"                    , MachO::S_SYMBOL_STUBS },
+  { "ModInitFuncPointers"            , MachO::S_MOD_INIT_FUNC_POINTERS },
+  { "ModTermFuncPointers"            , MachO::S_MOD_TERM_FUNC_POINTERS },
+  { "Coalesced"                      , MachO::S_COALESCED },
+  { "GBZeroFill"                     , MachO::S_GB_ZEROFILL },
+  { "Interposing"                    , MachO::S_INTERPOSING },
+  { "16ByteLiterals"                 , MachO::S_16BYTE_LITERALS },
+  { "DTraceDOF"                      , MachO::S_DTRACE_DOF },
+  { "LazyDylibSymbolPointers"        , MachO::S_LAZY_DYLIB_SYMBOL_POINTERS },
+  { "ThreadLocalRegular"             , MachO::S_THREAD_LOCAL_REGULAR },
+  { "ThreadLocalZerofill"            , MachO::S_THREAD_LOCAL_ZEROFILL },
+  { "ThreadLocalVariables"           , MachO::S_THREAD_LOCAL_VARIABLES },
+  { "ThreadLocalVariablePointers"    , MachO::S_THREAD_LOCAL_VARIABLE_POINTERS },
+  { "ThreadLocalInitFunctionPointers", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS }
+};
+
+static const EnumEntry<unsigned> MachOSectionAttributes[] = {
+  { "LocReloc"         , 1 <<  0 /*S_ATTR_LOC_RELOC          */ },
+  { "ExtReloc"         , 1 <<  1 /*S_ATTR_EXT_RELOC          */ },
+  { "SomeInstructions" , 1 <<  2 /*S_ATTR_SOME_INSTRUCTIONS  */ },
+  { "Debug"            , 1 << 17 /*S_ATTR_DEBUG              */ },
+  { "SelfModifyingCode", 1 << 18 /*S_ATTR_SELF_MODIFYING_CODE*/ },
+  { "LiveSupport"      , 1 << 19 /*S_ATTR_LIVE_SUPPORT       */ },
+  { "NoDeadStrip"      , 1 << 20 /*S_ATTR_NO_DEAD_STRIP      */ },
+  { "StripStaticSyms"  , 1 << 21 /*S_ATTR_STRIP_STATIC_SYMS  */ },
+  { "NoTOC"            , 1 << 22 /*S_ATTR_NO_TOC             */ },
+  { "PureInstructions" , 1 << 23 /*S_ATTR_PURE_INSTRUCTIONS  */ },
+};
+
+static const EnumEntry<unsigned> MachOSymbolRefTypes[] = {
+  { "UndefinedNonLazy",                     0 },
+  { "ReferenceFlagUndefinedLazy",           1 },
+  { "ReferenceFlagDefined",                 2 },
+  { "ReferenceFlagPrivateDefined",          3 },
+  { "ReferenceFlagPrivateUndefinedNonLazy", 4 },
+  { "ReferenceFlagPrivateUndefinedLazy",    5 }
+};
+
+static const EnumEntry<unsigned> MachOSymbolFlags[] = {
+  { "ReferencedDynamically", 0x10 },
+  { "NoDeadStrip",           0x20 },
+  { "WeakRef",               0x40 },
+  { "WeakDef",               0x80 },
+  { "AltEntry",             0x200 },
+};
+
+static const EnumEntry<unsigned> MachOSymbolTypes[] = {
+  { "Undef",           0x0 },
+  { "Abs",             0x2 },
+  { "Indirect",        0xA },
+  { "PreboundUndef",   0xC },
+  { "Section",         0xE }
+};
+
+namespace {
+  struct MachOSection {
+    ArrayRef<char> Name;
+    ArrayRef<char> SegmentName;
+    uint64_t Address;
+    uint64_t Size;
+    uint32_t Offset;
+    uint32_t Alignment;
+    uint32_t RelocationTableOffset;
+    uint32_t NumRelocationTableEntries;
+    uint32_t Flags;
+    uint32_t Reserved1;
+    uint32_t Reserved2;
+    uint32_t Reserved3;
+  };
+
+  struct MachOSegment {
+    std::string CmdName;
+    std::string SegName;
+    uint64_t cmdsize;
+    uint64_t vmaddr;
+    uint64_t vmsize;
+    uint64_t fileoff;
+    uint64_t filesize;
+    uint32_t maxprot;
+    uint32_t initprot;
+    uint32_t nsects;
+    uint32_t flags;
+  };
+
+  struct MachOSymbol {
+    uint32_t StringIndex;
+    uint8_t Type;
+    uint8_t SectionIndex;
+    uint16_t Flags;
+    uint64_t Value;
+  };
+}
+
+static std::string getMask(uint32_t prot)
+{
+  // TODO (davide): This always assumes prot is valid.
+  // Catch mistakes and report if needed.
+  std::string Prot;
+  Prot = "";
+  Prot += (prot & MachO::VM_PROT_READ) ? "r" : "-";
+  Prot += (prot & MachO::VM_PROT_WRITE) ? "w" : "-";
+  Prot += (prot & MachO::VM_PROT_EXECUTE) ? "x" : "-";
+  return Prot;
+}
+
+static void getSection(const MachOObjectFile *Obj,
+                       DataRefImpl Sec,
+                       MachOSection &Section) {
+  if (!Obj->is64Bit()) {
+    MachO::section Sect = Obj->getSection(Sec);
+    Section.Address     = Sect.addr;
+    Section.Size        = Sect.size;
+    Section.Offset      = Sect.offset;
+    Section.Alignment   = Sect.align;
+    Section.RelocationTableOffset = Sect.reloff;
+    Section.NumRelocationTableEntries = Sect.nreloc;
+    Section.Flags       = Sect.flags;
+    Section.Reserved1   = Sect.reserved1;
+    Section.Reserved2   = Sect.reserved2;
+    return;
+  }
+  MachO::section_64 Sect = Obj->getSection64(Sec);
+  Section.Address     = Sect.addr;
+  Section.Size        = Sect.size;
+  Section.Offset      = Sect.offset;
+  Section.Alignment   = Sect.align;
+  Section.RelocationTableOffset = Sect.reloff;
+  Section.NumRelocationTableEntries = Sect.nreloc;
+  Section.Flags       = Sect.flags;
+  Section.Reserved1   = Sect.reserved1;
+  Section.Reserved2   = Sect.reserved2;
+  Section.Reserved3   = Sect.reserved3;
+}
+
+static void getSegment(const MachOObjectFile *Obj,
+                       const MachOObjectFile::LoadCommandInfo &L,
+                       MachOSegment &Segment) {
+  if (!Obj->is64Bit()) {
+    MachO::segment_command SC = Obj->getSegmentLoadCommand(L);
+    Segment.CmdName = "LC_SEGMENT";
+    Segment.SegName = SC.segname;
+    Segment.cmdsize = SC.cmdsize;
+    Segment.vmaddr = SC.vmaddr;
+    Segment.vmsize = SC.vmsize;
+    Segment.fileoff = SC.fileoff;
+    Segment.filesize = SC.filesize;
+    Segment.maxprot = SC.maxprot;
+    Segment.initprot = SC.initprot;
+    Segment.nsects = SC.nsects;
+    Segment.flags = SC.flags;
+    return;
+  }
+  MachO::segment_command_64 SC = Obj->getSegment64LoadCommand(L);
+  Segment.CmdName = "LC_SEGMENT_64";
+  Segment.SegName = SC.segname;
+  Segment.cmdsize = SC.cmdsize;
+  Segment.vmaddr = SC.vmaddr;
+  Segment.vmsize = SC.vmsize;
+  Segment.fileoff = SC.fileoff;
+  Segment.filesize = SC.filesize;
+  Segment.maxprot = SC.maxprot;
+  Segment.initprot = SC.initprot;
+  Segment.nsects = SC.nsects;
+  Segment.flags = SC.flags;
+}
+
+static void getSymbol(const MachOObjectFile *Obj,
+                      DataRefImpl DRI,
+                      MachOSymbol &Symbol) {
+  if (!Obj->is64Bit()) {
+    MachO::nlist Entry = Obj->getSymbolTableEntry(DRI);
+    Symbol.StringIndex  = Entry.n_strx;
+    Symbol.Type         = Entry.n_type;
+    Symbol.SectionIndex = Entry.n_sect;
+    Symbol.Flags        = Entry.n_desc;
+    Symbol.Value        = Entry.n_value;
+    return;
+  }
+  MachO::nlist_64 Entry = Obj->getSymbol64TableEntry(DRI);
+  Symbol.StringIndex  = Entry.n_strx;
+  Symbol.Type         = Entry.n_type;
+  Symbol.SectionIndex = Entry.n_sect;
+  Symbol.Flags        = Entry.n_desc;
+  Symbol.Value        = Entry.n_value;
+}
+
+void MachODumper::printFileHeaders() {
+  DictScope H(W, "MachHeader");
+  if (!Obj->is64Bit()) {
+    printFileHeaders(Obj->getHeader());
+  } else {
+    printFileHeaders(Obj->getHeader64());
+    W.printHex("Reserved", Obj->getHeader64().reserved);
+  }
+}
+
+template<class MachHeader>
+void MachODumper::printFileHeaders(const MachHeader &Header) {
+  W.printEnum("Magic", Header.magic, makeArrayRef(MachOMagics));
+  W.printEnum("CpuType", Header.cputype, makeArrayRef(MachOHeaderCpuTypes));
+  uint32_t subtype = Header.cpusubtype & ~MachO::CPU_SUBTYPE_MASK;
+  switch (Header.cputype) {
+  case MachO::CPU_TYPE_X86:
+    W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesX86));
+    break;
+  case MachO::CPU_TYPE_X86_64:
+    W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesX64));
+    break;
+  case MachO::CPU_TYPE_ARM:
+    W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesARM));
+    break;
+  case MachO::CPU_TYPE_POWERPC:
+    W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesPPC));
+    break;
+  case MachO::CPU_TYPE_SPARC:
+    W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesSPARC));
+    break;
+  case MachO::CPU_TYPE_ARM64:
+    W.printEnum("CpuSubType", subtype, makeArrayRef(MachOHeaderCpuSubtypesARM64));
+    break;
+  case MachO::CPU_TYPE_POWERPC64:
+  default:
+    W.printHex("CpuSubtype", subtype);
+  }
+  W.printEnum("FileType", Header.filetype, makeArrayRef(MachOHeaderFileTypes));
+  W.printNumber("NumOfLoadCommands", Header.ncmds);
+  W.printNumber("SizeOfLoadCommands", Header.sizeofcmds);
+  W.printFlags("Flags", Header.flags, makeArrayRef(MachOHeaderFlags));
+}
+
+void MachODumper::printSectionHeaders() { return printSectionHeaders(Obj); }
+
+void MachODumper::printSectionHeaders(const MachOObjectFile *Obj) {
+  ListScope Group(W, "Sections");
+
+  int SectionIndex = -1;
+  for (const SectionRef &Section : Obj->sections()) {
+    ++SectionIndex;
+
+    MachOSection MOSection;
+    getSection(Obj, Section.getRawDataRefImpl(), MOSection);
+    DataRefImpl DR = Section.getRawDataRefImpl();
+    StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName());
+    ArrayRef<char> RawName = Obj->getSectionRawName(DR);
+    StringRef SegmentName = Obj->getSectionFinalSegmentName(DR);
+    ArrayRef<char> RawSegmentName = Obj->getSectionRawFinalSegmentName(DR);
+
+    DictScope SectionD(W, "Section");
+    W.printNumber("Index", SectionIndex);
+    W.printBinary("Name", Name, RawName);
+    W.printBinary("Segment", SegmentName, RawSegmentName);
+    W.printHex("Address", MOSection.Address);
+    W.printHex("Size", MOSection.Size);
+    W.printNumber("Offset", MOSection.Offset);
+    W.printNumber("Alignment", MOSection.Alignment);
+    W.printHex("RelocationOffset", MOSection.RelocationTableOffset);
+    W.printNumber("RelocationCount", MOSection.NumRelocationTableEntries);
+    W.printEnum("Type", MOSection.Flags & 0xFF,
+                makeArrayRef(MachOSectionTypes));
+    W.printFlags("Attributes", MOSection.Flags >> 8,
+                 makeArrayRef(MachOSectionAttributes));
+    W.printHex("Reserved1", MOSection.Reserved1);
+    W.printHex("Reserved2", MOSection.Reserved2);
+    if (Obj->is64Bit())
+      W.printHex("Reserved3", MOSection.Reserved3);
+
+    if (opts::SectionRelocations) {
+      ListScope D(W, "Relocations");
+      for (const RelocationRef &Reloc : Section.relocations())
+        printRelocation(Reloc);
+    }
+
+    if (opts::SectionSymbols) {
+      ListScope D(W, "Symbols");
+      for (const SymbolRef &Symbol : Obj->symbols()) {
+        if (!Section.containsSymbol(Symbol))
+          continue;
+
+        printSymbol(Symbol);
+      }
+    }
+
+    if (opts::SectionData && !Section.isBSS())
+      W.printBinaryBlock("SectionData", unwrapOrError(Obj->getFileName(),
+                                                      Section.getContents()));
+  }
+}
+
+void MachODumper::printRelocations() {
+  ListScope D(W, "Relocations");
+
+  std::error_code EC;
+  for (const SectionRef &Section : Obj->sections()) {
+    StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName());
+    bool PrintedGroup = false;
+    for (const RelocationRef &Reloc : Section.relocations()) {
+      if (!PrintedGroup) {
+        W.startLine() << "Section " << Name << " {\n";
+        W.indent();
+        PrintedGroup = true;
+      }
+
+      printRelocation(Reloc);
+    }
+
+    if (PrintedGroup) {
+      W.unindent();
+      W.startLine() << "}\n";
+    }
+  }
+}
+
+void MachODumper::printRelocation(const RelocationRef &Reloc) {
+  return printRelocation(Obj, Reloc);
+}
+
+void MachODumper::printRelocation(const MachOObjectFile *Obj,
+                                  const RelocationRef &Reloc) {
+  uint64_t Offset = Reloc.getOffset();
+  SmallString<32> RelocName;
+  Reloc.getTypeName(RelocName);
+
+  DataRefImpl DR = Reloc.getRawDataRefImpl();
+  MachO::any_relocation_info RE = Obj->getRelocation(DR);
+  bool IsScattered = Obj->isRelocationScattered(RE);
+  bool IsExtern = !IsScattered && Obj->getPlainRelocationExternal(RE);
+
+  StringRef TargetName;
+  if (IsExtern) {
+    symbol_iterator Symbol = Reloc.getSymbol();
+    if (Symbol != Obj->symbol_end()) {
+      Expected<StringRef> TargetNameOrErr = Symbol->getName();
+      if (!TargetNameOrErr)
+        reportError(TargetNameOrErr.takeError(), Obj->getFileName());
+      TargetName = *TargetNameOrErr;
+    }
+  } else if (!IsScattered) {
+    section_iterator SecI = Obj->getRelocationSection(DR);
+    if (SecI != Obj->section_end())
+      TargetName = unwrapOrError(Obj->getFileName(), SecI->getName());
+  }
+  if (TargetName.empty())
+    TargetName = "-";
+
+  if (opts::ExpandRelocs) {
+    DictScope Group(W, "Relocation");
+    W.printHex("Offset", Offset);
+    W.printNumber("PCRel", Obj->getAnyRelocationPCRel(RE));
+    W.printNumber("Length", Obj->getAnyRelocationLength(RE));
+    W.printNumber("Type", RelocName, Obj->getAnyRelocationType(RE));
+    if (IsScattered) {
+      W.printHex("Value", Obj->getScatteredRelocationValue(RE));
+    } else {
+      const char *Kind = IsExtern ? "Symbol" : "Section";
+      W.printNumber(Kind, TargetName, Obj->getPlainRelocationSymbolNum(RE));
+    }
+  } else {
+    SmallString<32> SymbolNameOrOffset("0x");
+    if (IsScattered) {
+      // Scattered relocations don't really have an associated symbol for some
+      // reason, even if one exists in the symtab at the correct address.
+      SymbolNameOrOffset += utohexstr(Obj->getScatteredRelocationValue(RE));
+    } else {
+      SymbolNameOrOffset = TargetName;
+    }
+
+    raw_ostream& OS = W.startLine();
+    OS << W.hex(Offset)
+       << " " << Obj->getAnyRelocationPCRel(RE)
+       << " " << Obj->getAnyRelocationLength(RE);
+    if (IsScattered)
+      OS << " n/a";
+    else
+      OS << " " << Obj->getPlainRelocationExternal(RE);
+    OS << " " << RelocName
+       << " " << IsScattered
+       << " " << SymbolNameOrOffset
+       << "\n";
+  }
+}
+
+void MachODumper::printSymbols() {
+  ListScope Group(W, "Symbols");
+
+  for (const SymbolRef &Symbol : Obj->symbols()) {
+    printSymbol(Symbol);
+  }
+}
+
+void MachODumper::printDynamicSymbols() {
+  ListScope Group(W, "DynamicSymbols");
+}
+
+void MachODumper::printSymbol(const SymbolRef &Symbol) {
+  StringRef SymbolName;
+  Expected<StringRef> SymbolNameOrErr = Symbol.getName();
+  if (!SymbolNameOrErr) {
+    // TODO: Actually report errors helpfully.
+    consumeError(SymbolNameOrErr.takeError());
+  } else
+    SymbolName = *SymbolNameOrErr;
+
+  MachOSymbol MOSymbol;
+  getSymbol(Obj, Symbol.getRawDataRefImpl(), MOSymbol);
+
+  StringRef SectionName = "";
+  // Don't ask a Mach-O STABS symbol for its section unless we know that
+  // STAB symbol's section field refers to a valid section index. Otherwise
+  // the symbol may error trying to load a section that does not exist.
+  // TODO: Add a whitelist of STABS symbol types that contain valid section
+  // indices.
+  if (!(MOSymbol.Type & MachO::N_STAB)) {
+    Expected<section_iterator> SecIOrErr = Symbol.getSection();
+    if (!SecIOrErr)
+      reportError(SecIOrErr.takeError(), Obj->getFileName());
+
+    section_iterator SecI = *SecIOrErr;
+    if (SecI != Obj->section_end())
+      SectionName = unwrapOrError(Obj->getFileName(), SecI->getName());
+  }
+
+  DictScope D(W, "Symbol");
+  W.printNumber("Name", SymbolName, MOSymbol.StringIndex);
+  if (MOSymbol.Type & MachO::N_STAB) {
+    W.printHex("Type", "SymDebugTable", MOSymbol.Type);
+  } else {
+    if (MOSymbol.Type & MachO::N_PEXT)
+      W.startLine() << "PrivateExtern\n";
+    if (MOSymbol.Type & MachO::N_EXT)
+      W.startLine() << "Extern\n";
+    W.printEnum("Type", uint8_t(MOSymbol.Type & MachO::N_TYPE),
+                makeArrayRef(MachOSymbolTypes));
+  }
+  W.printHex("Section", SectionName, MOSymbol.SectionIndex);
+  W.printEnum("RefType", static_cast<uint16_t>(MOSymbol.Flags & 0xF),
+              makeArrayRef(MachOSymbolRefTypes));
+  W.printFlags("Flags", static_cast<uint16_t>(MOSymbol.Flags & ~0xF),
+               makeArrayRef(MachOSymbolFlags));
+  W.printHex("Value", MOSymbol.Value);
+}
+
+void MachODumper::printUnwindInfo() {
+  W.startLine() << "UnwindInfo not implemented.\n";
+}
+
+void MachODumper::printStackMap() const {
+  object::SectionRef StackMapSection;
+  for (auto Sec : Obj->sections()) {
+    StringRef Name;
+    if (Expected<StringRef> NameOrErr = Sec.getName())
+      Name = *NameOrErr;
+    else
+      consumeError(NameOrErr.takeError());
+
+    if (Name == "__llvm_stackmaps") {
+      StackMapSection = Sec;
+      break;
+    }
+  }
+
+  if (StackMapSection == object::SectionRef())
+    return;
+
+  StringRef StackMapContents =
+      unwrapOrError(Obj->getFileName(), StackMapSection.getContents());
+  ArrayRef<uint8_t> StackMapContentsArray =
+      arrayRefFromStringRef(StackMapContents);
+
+  if (Obj->isLittleEndian())
+    prettyPrintStackMap(
+        W, StackMapParser<support::little>(StackMapContentsArray));
+  else
+    prettyPrintStackMap(
+        W, StackMapParser<support::big>(StackMapContentsArray));
+}
+
+void MachODumper::printNeededLibraries() {
+  ListScope D(W, "NeededLibraries");
+
+  using LibsTy = std::vector<StringRef>;
+  LibsTy Libs;
+
+  for (const auto &Command : Obj->load_commands()) {
+    if (Command.C.cmd == MachO::LC_LOAD_DYLIB ||
+        Command.C.cmd == MachO::LC_ID_DYLIB ||
+        Command.C.cmd == MachO::LC_LOAD_WEAK_DYLIB ||
+        Command.C.cmd == MachO::LC_REEXPORT_DYLIB ||
+        Command.C.cmd == MachO::LC_LAZY_LOAD_DYLIB ||
+        Command.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB) {
+      MachO::dylib_command Dl = Obj->getDylibIDLoadCommand(Command);
+      if (Dl.dylib.name < Dl.cmdsize) {
+        auto *P = static_cast<const char*>(Command.Ptr) + Dl.dylib.name;
+        Libs.push_back(P);
+      }
+    }
+  }
+
+  llvm::stable_sort(Libs);
+
+  for (const auto &L : Libs) {
+    W.startLine() << L << "\n";
+  }
+}
+
+void MachODumper::printMachODataInCode() {
+  for (const auto &Load : Obj->load_commands()) {
+    if (Load.C.cmd  == MachO::LC_DATA_IN_CODE) {
+      MachO::linkedit_data_command LLC = Obj->getLinkeditDataLoadCommand(Load);
+      DictScope Group(W, "DataInCode");
+      W.printNumber("Data offset", LLC.dataoff);
+      W.printNumber("Data size", LLC.datasize);
+      ListScope D(W, "Data entries");
+      unsigned NumRegions = LLC.datasize / sizeof(MachO::data_in_code_entry);
+      for (unsigned i = 0; i < NumRegions; ++i) {
+        MachO::data_in_code_entry DICE = Obj->getDataInCodeTableEntry(
+                                                              LLC.dataoff, i);
+        DictScope Group(W, "Entry");
+        W.printNumber("Index", i);
+        W.printNumber("Offset", DICE.offset);
+        W.printNumber("Length", DICE.length);
+        W.printNumber("Kind", DICE.kind);
+      }
+    }
+  }
+}
+
+void MachODumper::printMachOVersionMin() {
+  for (const auto &Load : Obj->load_commands()) {
+    StringRef Cmd;
+    switch (Load.C.cmd) {
+    case MachO::LC_VERSION_MIN_MACOSX:
+      Cmd = "LC_VERSION_MIN_MACOSX";
+      break;
+    case MachO::LC_VERSION_MIN_IPHONEOS:
+      Cmd = "LC_VERSION_MIN_IPHONEOS";
+      break;
+    case MachO::LC_VERSION_MIN_TVOS:
+      Cmd = "LC_VERSION_MIN_TVOS";
+      break;
+    case MachO::LC_VERSION_MIN_WATCHOS:
+      Cmd = "LC_VERSION_MIN_WATCHOS";
+      break;
+    case MachO::LC_BUILD_VERSION:
+      Cmd = "LC_BUILD_VERSION";
+      break;
+    default:
+      continue;
+    }
+
+    DictScope Group(W, "MinVersion");
+    // Handle LC_BUILD_VERSION.
+    if (Load.C.cmd == MachO::LC_BUILD_VERSION) {
+      MachO::build_version_command BVC = Obj->getBuildVersionLoadCommand(Load);
+      W.printString("Cmd", Cmd);
+      W.printNumber("Size", BVC.cmdsize);
+      W.printString("Platform",
+                    MachOObjectFile::getBuildPlatform(BVC.platform));
+      W.printString("Version", MachOObjectFile::getVersionString(BVC.minos));
+      if (BVC.sdk)
+        W.printString("SDK", MachOObjectFile::getVersionString(BVC.sdk));
+      else
+        W.printString("SDK", StringRef("n/a"));
+      continue;
+    }
+
+    MachO::version_min_command VMC = Obj->getVersionMinLoadCommand(Load);
+    W.printString("Cmd", Cmd);
+    W.printNumber("Size", VMC.cmdsize);
+    SmallString<32> Version;
+    Version = utostr(MachOObjectFile::getVersionMinMajor(VMC, false)) + "." +
+              utostr(MachOObjectFile::getVersionMinMinor(VMC, false));
+    uint32_t Update = MachOObjectFile::getVersionMinUpdate(VMC, false);
+    if (Update != 0)
+      Version += "." + utostr(MachOObjectFile::getVersionMinUpdate(VMC, false));
+    W.printString("Version", Version);
+    SmallString<32> SDK;
+    if (VMC.sdk == 0)
+      SDK = "n/a";
+    else {
+      SDK = utostr(MachOObjectFile::getVersionMinMajor(VMC, true)) + "." +
+            utostr(MachOObjectFile::getVersionMinMinor(VMC, true));
+      uint32_t Update = MachOObjectFile::getVersionMinUpdate(VMC, true);
+      if (Update != 0)
+        SDK += "." + utostr(MachOObjectFile::getVersionMinUpdate(VMC, true));
+    }
+    W.printString("SDK", SDK);
+  }
+}
+
+void MachODumper::printMachODysymtab() {
+  for (const auto &Load : Obj->load_commands()) {
+    if (Load.C.cmd == MachO::LC_DYSYMTAB) {
+      MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand();
+      DictScope Group(W, "Dysymtab");
+      W.printNumber("ilocalsym", DLC.ilocalsym);
+      W.printNumber("nlocalsym", DLC.nlocalsym);
+      W.printNumber("iextdefsym", DLC.iextdefsym);
+      W.printNumber("nextdefsym", DLC.nextdefsym);
+      W.printNumber("iundefsym", DLC.iundefsym);
+      W.printNumber("nundefsym", DLC.nundefsym);
+      W.printNumber("tocoff", DLC.tocoff);
+      W.printNumber("ntoc", DLC.ntoc);
+      W.printNumber("modtaboff", DLC.modtaboff);
+      W.printNumber("nmodtab", DLC.nmodtab);
+      W.printNumber("extrefsymoff", DLC.extrefsymoff);
+      W.printNumber("nextrefsyms", DLC.nextrefsyms);
+      W.printNumber("indirectsymoff", DLC.indirectsymoff);
+      W.printNumber("nindirectsyms", DLC.nindirectsyms);
+      W.printNumber("extreloff", DLC.extreloff);
+      W.printNumber("nextrel", DLC.nextrel);
+      W.printNumber("locreloff", DLC.locreloff);
+      W.printNumber("nlocrel", DLC.nlocrel);
+    }
+  }
+}
+
+void MachODumper::printMachOSegment() {
+  for (const auto &Load : Obj->load_commands()) {
+    if (Load.C.cmd == MachO::LC_SEGMENT || Load.C.cmd == MachO::LC_SEGMENT_64) {
+      MachOSegment MOSegment;
+      getSegment(Obj, Load, MOSegment);
+      DictScope Group(W, "Segment");
+      W.printString("Cmd", MOSegment.CmdName);
+      W.printString("Name", MOSegment.SegName);
+      W.printNumber("Size", MOSegment.cmdsize);
+      W.printHex("vmaddr", MOSegment.vmaddr);
+      W.printHex("vmsize", MOSegment.vmsize);
+      W.printNumber("fileoff", MOSegment.fileoff);
+      W.printNumber("filesize", MOSegment.filesize);
+      W.printString("maxprot", getMask(MOSegment.maxprot));
+      W.printString("initprot", getMask(MOSegment.initprot));
+      W.printNumber("nsects", MOSegment.nsects);
+      W.printHex("flags", MOSegment.flags);
+    }
+  }
+}
+
+void MachODumper::printMachOIndirectSymbols() {
+  for (const auto &Load : Obj->load_commands()) {
+    if (Load.C.cmd == MachO::LC_DYSYMTAB) {
+      MachO::dysymtab_command DLC = Obj->getDysymtabLoadCommand();
+      DictScope Group(W, "Indirect Symbols");
+      W.printNumber("Number", DLC.nindirectsyms);
+      ListScope D(W, "Symbols");
+      for (unsigned i = 0; i < DLC.nindirectsyms; ++i) {
+        DictScope Group(W, "Entry");
+        W.printNumber("Entry Index", i);
+        W.printHex("Symbol Index", Obj->getIndirectSymbolTableEntry(DLC, i));
+      }
+    }
+  }
+}
+
+void MachODumper::printMachOLinkerOptions() {
+  for (const auto &Load : Obj->load_commands()) {
+    if (Load.C.cmd == MachO::LC_LINKER_OPTION) {
+      MachO::linker_option_command LOLC = Obj->getLinkerOptionLoadCommand(Load);
+      DictScope Group(W, "Linker Options");
+      W.printNumber("Size", LOLC.cmdsize);
+      ListScope D(W, "Strings");
+      uint64_t DataSize = LOLC.cmdsize - sizeof(MachO::linker_option_command);
+      const char *P = Load.Ptr + sizeof(MachO::linker_option_command);
+      StringRef Data(P, DataSize);
+      for (unsigned i = 0; i < LOLC.count; ++i) {
+        std::pair<StringRef,StringRef> Split = Data.split('\0');
+        W.printString("Value", Split.first);
+        Data = Split.second;
+      }
+    }
+  }
+}
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/ObjDumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/ObjDumper.cpp
new file mode 100644
index 0000000000..fc91d81f07
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/ObjDumper.cpp
@@ -0,0 +1,186 @@
+//===-- ObjDumper.cpp - Base dumper class -----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file implements ObjDumper.
+///
+//===----------------------------------------------------------------------===//
+
+#include "ObjDumper.h"
+#include "llvm-readobj.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/FormatVariadic.h"
+#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/raw_ostream.h"
+#include <map>
+
+namespace llvm {
+
+static inline Error createError(const Twine &Msg) {
+  return createStringError(object::object_error::parse_failed, Msg);
+}
+
+ObjDumper::ObjDumper(ScopedPrinter &Writer, StringRef ObjName) : W(Writer) {
+  // Dumper reports all non-critical errors as warnings.
+  // It does not print the same warning more than once.
+  WarningHandler = [=](const Twine &Msg) {
+    if (Warnings.insert(Msg.str()).second)
+      reportWarning(createError(Msg), ObjName);
+    return Error::success();
+  };
+}
+
+ObjDumper::~ObjDumper() {}
+
+void ObjDumper::reportUniqueWarning(Error Err) const {
+  reportUniqueWarning(toString(std::move(Err)));
+}
+
+void ObjDumper::reportUniqueWarning(const Twine &Msg) const {
+  cantFail(WarningHandler(Msg),
+           "WarningHandler should always return ErrorSuccess");
+}
+
+static void printAsPrintable(raw_ostream &W, const uint8_t *Start, size_t Len) {
+  for (size_t i = 0; i < Len; i++)
+    W << (isPrint(Start[i]) ? static_cast<char>(Start[i]) : '.');
+}
+
+static std::vector<object::SectionRef>
+getSectionRefsByNameOrIndex(const object::ObjectFile &Obj,
+                            ArrayRef<std::string> Sections) {
+  std::vector<object::SectionRef> Ret;
+  std::map<std::string, bool> SecNames;
+  std::map<unsigned, bool> SecIndices;
+  unsigned SecIndex;
+  for (StringRef Section : Sections) {
+    if (!Section.getAsInteger(0, SecIndex))
+      SecIndices.emplace(SecIndex, false);
+    else
+      SecNames.emplace(std::string(Section), false);
+  }
+
+  SecIndex = Obj.isELF() ? 0 : 1;
+  for (object::SectionRef SecRef : Obj.sections()) {
+    StringRef SecName = unwrapOrError(Obj.getFileName(), SecRef.getName());
+    auto NameIt = SecNames.find(std::string(SecName));
+    if (NameIt != SecNames.end())
+      NameIt->second = true;
+    auto IndexIt = SecIndices.find(SecIndex);
+    if (IndexIt != SecIndices.end())
+      IndexIt->second = true;
+    if (NameIt != SecNames.end() || IndexIt != SecIndices.end())
+      Ret.push_back(SecRef);
+    SecIndex++;
+  }
+
+  for (const std::pair<const std::string, bool> &S : SecNames)
+    if (!S.second)
+      reportWarning(
+          createError(formatv("could not find section '{0}'", S.first).str()),
+          Obj.getFileName());
+
+  for (std::pair<unsigned, bool> S : SecIndices)
+    if (!S.second)
+      reportWarning(
+          createError(formatv("could not find section {0}", S.first).str()),
+          Obj.getFileName());
+
+  return Ret;
+}
+
+void ObjDumper::printSectionsAsString(const object::ObjectFile &Obj,
+                                      ArrayRef<std::string> Sections) {
+  bool First = true;
+  for (object::SectionRef Section :
+       getSectionRefsByNameOrIndex(Obj, Sections)) {
+    StringRef SectionName = unwrapOrError(Obj.getFileName(), Section.getName());
+
+    if (!First)
+      W.startLine() << '\n';
+    First = false;
+    W.startLine() << "String dump of section '" << SectionName << "':\n";
+
+    StringRef SectionContent =
+        unwrapOrError(Obj.getFileName(), Section.getContents());
+
+    const uint8_t *SecContent = SectionContent.bytes_begin();
+    const uint8_t *CurrentWord = SecContent;
+    const uint8_t *SecEnd = SectionContent.bytes_end();
+
+    while (CurrentWord <= SecEnd) {
+      size_t WordSize = strnlen(reinterpret_cast<const char *>(CurrentWord),
+                                SecEnd - CurrentWord);
+      if (!WordSize) {
+        CurrentWord++;
+        continue;
+      }
+      W.startLine() << format("[%6tx] ", CurrentWord - SecContent);
+      printAsPrintable(W.startLine(), CurrentWord, WordSize);
+      W.startLine() << '\n';
+      CurrentWord += WordSize + 1;
+    }
+  }
+}
+
+void ObjDumper::printSectionsAsHex(const object::ObjectFile &Obj,
+                                   ArrayRef<std::string> Sections) {
+  bool First = true;
+  for (object::SectionRef Section :
+       getSectionRefsByNameOrIndex(Obj, Sections)) {
+    StringRef SectionName = unwrapOrError(Obj.getFileName(), Section.getName());
+
+    if (!First)
+      W.startLine() << '\n';
+    First = false;
+    W.startLine() << "Hex dump of section '" << SectionName << "':\n";
+
+    StringRef SectionContent =
+        unwrapOrError(Obj.getFileName(), Section.getContents());
+    const uint8_t *SecContent = SectionContent.bytes_begin();
+    const uint8_t *SecEnd = SecContent + SectionContent.size();
+
+    for (const uint8_t *SecPtr = SecContent; SecPtr < SecEnd; SecPtr += 16) {
+      const uint8_t *TmpSecPtr = SecPtr;
+      uint8_t i;
+      uint8_t k;
+
+      W.startLine() << format_hex(Section.getAddress() + (SecPtr - SecContent),
+                                  10);
+      W.startLine() << ' ';
+      for (i = 0; TmpSecPtr < SecEnd && i < 4; ++i) {
+        for (k = 0; TmpSecPtr < SecEnd && k < 4; k++, TmpSecPtr++) {
+          uint8_t Val = *(reinterpret_cast<const uint8_t *>(TmpSecPtr));
+          W.startLine() << format_hex_no_prefix(Val, 2);
+        }
+        W.startLine() << ' ';
+      }
+
+      // We need to print the correct amount of spaces to match the format.
+      // We are adding the (4 - i) last rows that are 8 characters each.
+      // Then, the (4 - i) spaces that are in between the rows.
+      // Least, if we cut in a middle of a row, we add the remaining characters,
+      // which is (8 - (k * 2)).
+      if (i < 4)
+        W.startLine() << format("%*c", (4 - i) * 8 + (4 - i), ' ');
+      if (k < 4)
+        W.startLine() << format("%*c", 8 - k * 2, ' ');
+
+      TmpSecPtr = SecPtr;
+      for (i = 0; TmpSecPtr + i < SecEnd && i < 16; ++i)
+        W.startLine() << (isPrint(TmpSecPtr[i])
+                              ? static_cast<char>(TmpSecPtr[i])
+                              : '.');
+
+      W.startLine() << '\n';
+    }
+  }
+}
+
+} // namespace llvm
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/ObjDumper.h b/contrib/libs/llvm12/tools/llvm-readobj/ObjDumper.h
new file mode 100644
index 0000000000..d4e166b504
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/ObjDumper.h
@@ -0,0 +1,154 @@
+//===-- ObjDumper.h ---------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_READOBJ_OBJDUMPER_H
+#define LLVM_TOOLS_LLVM_READOBJ_OBJDUMPER_H
+
+#include <memory>
+#include <system_error>
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Support/CommandLine.h"
+
+#include <unordered_set>
+
+namespace llvm {
+namespace object {
+class COFFImportFile;
+class ObjectFile;
+class XCOFFObjectFile;
+class ELFObjectFileBase;
+}
+namespace codeview {
+class GlobalTypeTableBuilder;
+class MergingTypeTableBuilder;
+} // namespace codeview
+
+class ScopedPrinter;
+
+class ObjDumper {
+public:
+  ObjDumper(ScopedPrinter &Writer, StringRef ObjName);
+  virtual ~ObjDumper();
+
+  virtual bool canDumpContent() { return true; }
+
+  virtual void printFileHeaders() = 0;
+  virtual void printSectionHeaders() = 0;
+  virtual void printRelocations() = 0;
+  virtual void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) {
+    if (PrintSymbols)
+      printSymbols();
+    if (PrintDynamicSymbols)
+      printDynamicSymbols();
+  }
+  virtual void printProgramHeaders(bool PrintProgramHeaders,
+                                   cl::boolOrDefault PrintSectionMapping) {
+    if (PrintProgramHeaders)
+      printProgramHeaders();
+    if (PrintSectionMapping == cl::BOU_TRUE)
+      printSectionMapping();
+  }
+
+  virtual void printUnwindInfo() = 0;
+
+  // Only implemented for ELF at this time.
+  virtual void printDependentLibs() {}
+  virtual void printDynamicRelocations() { }
+  virtual void printDynamicTable() { }
+  virtual void printNeededLibraries() { }
+  virtual void printSectionAsHex(StringRef SectionName) {}
+  virtual void printHashTable() { }
+  virtual void printGnuHashTable() {}
+  virtual void printHashSymbols() {}
+  virtual void printLoadName() {}
+  virtual void printVersionInfo() {}
+  virtual void printGroupSections() {}
+  virtual void printHashHistograms() {}
+  virtual void printCGProfile() {}
+  virtual void printAddrsig() {}
+  virtual void printNotes() {}
+  virtual void printELFLinkerOptions() {}
+  virtual void printStackSizes() {}
+  virtual void printSectionDetails() {}
+  virtual void printArchSpecificInfo() {}
+
+  // Only implemented for PE/COFF.
+  virtual void printCOFFImports() { }
+  virtual void printCOFFExports() { }
+  virtual void printCOFFDirectives() { }
+  virtual void printCOFFBaseReloc() { }
+  virtual void printCOFFDebugDirectory() { }
+  virtual void printCOFFTLSDirectory() {}
+  virtual void printCOFFResources() {}
+  virtual void printCOFFLoadConfig() { }
+  virtual void printCodeViewDebugInfo() { }
+  virtual void
+  mergeCodeViewTypes(llvm::codeview::MergingTypeTableBuilder &CVIDs,
+                     llvm::codeview::MergingTypeTableBuilder &CVTypes,
+                     llvm::codeview::GlobalTypeTableBuilder &GlobalCVIDs,
+                     llvm::codeview::GlobalTypeTableBuilder &GlobalCVTypes,
+                     bool GHash) {}
+
+  // Only implemented for MachO.
+  virtual void printMachODataInCode() { }
+  virtual void printMachOVersionMin() { }
+  virtual void printMachODysymtab() { }
+  virtual void printMachOSegment() { }
+  virtual void printMachOIndirectSymbols() { }
+  virtual void printMachOLinkerOptions() { }
+
+  virtual void printStackMap() const = 0;
+
+  void printSectionsAsString(const object::ObjectFile &Obj,
+                             ArrayRef<std::string> Sections);
+  void printSectionsAsHex(const object::ObjectFile &Obj,
+                          ArrayRef<std::string> Sections);
+
+  std::function<Error(const Twine &Msg)> WarningHandler;
+  void reportUniqueWarning(Error Err) const;
+  void reportUniqueWarning(const Twine &Msg) const;
+
+protected:
+  ScopedPrinter &W;
+
+private:
+  virtual void printSymbols() {}
+  virtual void printDynamicSymbols() {}
+  virtual void printProgramHeaders() {}
+  virtual void printSectionMapping() {}
+
+  std::unordered_set<std::string> Warnings;
+};
+
+std::unique_ptr<ObjDumper> createCOFFDumper(const object::COFFObjectFile &Obj,
+                                            ScopedPrinter &Writer);
+
+std::unique_ptr<ObjDumper> createELFDumper(const object::ELFObjectFileBase &Obj,
+                                           ScopedPrinter &Writer);
+
+std::unique_ptr<ObjDumper> createMachODumper(const object::MachOObjectFile &Obj,
+                                             ScopedPrinter &Writer);
+
+std::unique_ptr<ObjDumper> createWasmDumper(const object::WasmObjectFile &Obj,
+                                            ScopedPrinter &Writer);
+
+std::unique_ptr<ObjDumper> createXCOFFDumper(const object::XCOFFObjectFile &Obj,
+                                             ScopedPrinter &Writer);
+
+void dumpCOFFImportFile(const object::COFFImportFile *File,
+                        ScopedPrinter &Writer);
+
+void dumpCodeViewMergedTypes(ScopedPrinter &Writer,
+                             ArrayRef<ArrayRef<uint8_t>> IpiRecords,
+                             ArrayRef<ArrayRef<uint8_t>> TpiRecords);
+
+} // namespace llvm
+
+#endif
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/StackMapPrinter.h b/contrib/libs/llvm12/tools/llvm-readobj/StackMapPrinter.h
new file mode 100644
index 0000000000..ef75756402
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/StackMapPrinter.h
@@ -0,0 +1,81 @@
+//===-------- StackMapPrinter.h - Pretty-print stackmaps --------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_READOBJ_STACKMAPPRINTER_H
+#define LLVM_TOOLS_LLVM_READOBJ_STACKMAPPRINTER_H
+
+#include "llvm/Object/StackMapParser.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+namespace llvm {
+
+// Pretty print a stackmap to the given ostream.
+template <typename StackMapParserT>
+void prettyPrintStackMap(ScopedPrinter &W, const StackMapParserT &SMP) {
+
+  W.printNumber("LLVM StackMap Version",  SMP.getVersion());
+  W.printNumber("Num Functions", SMP.getNumFunctions());
+
+  // Functions:
+  for (const auto &F : SMP.functions())
+    W.startLine() << "  Function address: " << F.getFunctionAddress()
+       << ", stack size: " << F.getStackSize()
+       << ", callsite record count: " << F.getRecordCount() << "\n";
+
+  // Constants:
+  W.printNumber("Num Constants", SMP.getNumConstants());
+  unsigned ConstantIndex = 0;
+  for (const auto &C : SMP.constants())
+    W.startLine() << "  #" << ++ConstantIndex << ": " << C.getValue() << "\n";
+
+  // Records:
+  W.printNumber("Num Records", SMP.getNumRecords());
+  for (const auto &R : SMP.records()) {
+    W.startLine() << "  Record ID: " << R.getID()
+                  << ", instruction offset: " << R.getInstructionOffset()
+                  << "\n";
+    W.startLine() << "    " << R.getNumLocations() << " locations:\n";
+
+    unsigned LocationIndex = 0;
+    for (const auto &Loc : R.locations()) {
+      raw_ostream &OS = W.startLine();
+      OS << "      #" << ++LocationIndex << ": ";
+      switch (Loc.getKind()) {
+      case StackMapParserT::LocationKind::Register:
+        OS << "Register R#" << Loc.getDwarfRegNum();
+        break;
+      case StackMapParserT::LocationKind::Direct:
+        OS << "Direct R#" << Loc.getDwarfRegNum() << " + " << Loc.getOffset();
+        break;
+      case StackMapParserT::LocationKind::Indirect:
+        OS << "Indirect [R#" << Loc.getDwarfRegNum() << " + " << Loc.getOffset()
+           << "]";
+        break;
+      case StackMapParserT::LocationKind::Constant:
+        OS << "Constant " << Loc.getSmallConstant();
+        break;
+      case StackMapParserT::LocationKind::ConstantIndex:
+        OS << "ConstantIndex #" << Loc.getConstantIndex() << " ("
+           << SMP.getConstant(Loc.getConstantIndex()).getValue() << ")";
+        break;
+      }
+      OS << ", size: " << Loc.getSizeInBytes() << "\n";
+    }
+
+    raw_ostream &OS = W.startLine();
+    OS << "    " << R.getNumLiveOuts() << " live-outs: [ ";
+    for (const auto &LO : R.liveouts())
+      OS << "R#" << LO.getDwarfRegNum() << " ("
+         << LO.getSizeInBytes() << "-bytes) ";
+    OS << "]\n";
+  }
+}
+
+}
+
+#endif
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/WasmDumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/WasmDumper.cpp
new file mode 100644
index 0000000000..fb7134d20a
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/WasmDumper.cpp
@@ -0,0 +1,248 @@
+//===-- WasmDumper.cpp - Wasm-specific object file dumper -----------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Wasm-specific dumper for llvm-readobj.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ObjDumper.h"
+#include "llvm-readobj.h"
+#include "llvm/Object/Wasm.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+using namespace llvm;
+using namespace object;
+
+namespace {
+
+static const EnumEntry<unsigned> WasmSymbolTypes[] = {
+#define ENUM_ENTRY(X)                                                          \
+  { #X, wasm::WASM_SYMBOL_TYPE_##X }
+    ENUM_ENTRY(FUNCTION), ENUM_ENTRY(DATA),  ENUM_ENTRY(GLOBAL),
+    ENUM_ENTRY(SECTION),  ENUM_ENTRY(EVENT), ENUM_ENTRY(TABLE),
+#undef ENUM_ENTRY
+};
+
+static const EnumEntry<uint32_t> WasmSectionTypes[] = {
+#define ENUM_ENTRY(X)                                                          \
+  { #X, wasm::WASM_SEC_##X }
+    ENUM_ENTRY(CUSTOM),   ENUM_ENTRY(TYPE),      ENUM_ENTRY(IMPORT),
+    ENUM_ENTRY(FUNCTION), ENUM_ENTRY(TABLE),     ENUM_ENTRY(MEMORY),
+    ENUM_ENTRY(GLOBAL),   ENUM_ENTRY(EVENT),     ENUM_ENTRY(EXPORT),
+    ENUM_ENTRY(START),    ENUM_ENTRY(ELEM),      ENUM_ENTRY(CODE),
+    ENUM_ENTRY(DATA),     ENUM_ENTRY(DATACOUNT),
+#undef ENUM_ENTRY
+};
+
+static const EnumEntry<unsigned> WasmSymbolFlags[] = {
+#define ENUM_ENTRY(X)                                                          \
+  { #X, wasm::WASM_SYMBOL_##X }
+  ENUM_ENTRY(BINDING_GLOBAL),
+  ENUM_ENTRY(BINDING_WEAK),
+  ENUM_ENTRY(BINDING_LOCAL),
+  ENUM_ENTRY(VISIBILITY_DEFAULT),
+  ENUM_ENTRY(VISIBILITY_HIDDEN),
+  ENUM_ENTRY(UNDEFINED),
+  ENUM_ENTRY(EXPORTED),
+  ENUM_ENTRY(EXPLICIT_NAME),
+  ENUM_ENTRY(NO_STRIP),
+#undef ENUM_ENTRY
+};
+
+class WasmDumper : public ObjDumper {
+public:
+  WasmDumper(const WasmObjectFile *Obj, ScopedPrinter &Writer)
+      : ObjDumper(Writer, Obj->getFileName()), Obj(Obj) {}
+
+  void printFileHeaders() override;
+  void printSectionHeaders() override;
+  void printRelocations() override;
+  void printUnwindInfo() override { llvm_unreachable("unimplemented"); }
+  void printStackMap() const override { llvm_unreachable("unimplemented"); }
+
+protected:
+  void printSymbol(const SymbolRef &Sym);
+  void printRelocation(const SectionRef &Section, const RelocationRef &Reloc);
+
+private:
+  void printSymbols() override;
+  void printDynamicSymbols() override { llvm_unreachable("unimplemented"); }
+
+  const WasmObjectFile *Obj;
+};
+
+void WasmDumper::printFileHeaders() {
+  W.printHex("Version", Obj->getHeader().Version);
+}
+
+void WasmDumper::printRelocation(const SectionRef &Section,
+                                 const RelocationRef &Reloc) {
+  SmallString<64> RelocTypeName;
+  uint64_t RelocType = Reloc.getType();
+  Reloc.getTypeName(RelocTypeName);
+  const wasm::WasmRelocation &WasmReloc = Obj->getWasmRelocation(Reloc);
+
+  StringRef SymName;
+  symbol_iterator SI = Reloc.getSymbol();
+  if (SI != Obj->symbol_end())
+    SymName = unwrapOrError(Obj->getFileName(), SI->getName());
+
+  bool HasAddend = wasm::relocTypeHasAddend(static_cast<uint32_t>(RelocType));
+
+  if (opts::ExpandRelocs) {
+    DictScope Group(W, "Relocation");
+    W.printNumber("Type", RelocTypeName, RelocType);
+    W.printHex("Offset", Reloc.getOffset());
+    if (!SymName.empty())
+      W.printString("Symbol", SymName);
+    else
+      W.printHex("Index", WasmReloc.Index);
+    if (HasAddend)
+      W.printNumber("Addend", WasmReloc.Addend);
+  } else {
+    raw_ostream &OS = W.startLine();
+    OS << W.hex(Reloc.getOffset()) << " " << RelocTypeName << " ";
+    if (!SymName.empty())
+      OS << SymName;
+    else
+      OS << WasmReloc.Index;
+    if (HasAddend)
+      OS << " " << WasmReloc.Addend;
+    OS << "\n";
+  }
+}
+
+void WasmDumper::printRelocations() {
+  ListScope D(W, "Relocations");
+
+  int SectionNumber = 0;
+  for (const SectionRef &Section : Obj->sections()) {
+    bool PrintedGroup = false;
+    StringRef Name = unwrapOrError(Obj->getFileName(), Section.getName());
+
+    ++SectionNumber;
+
+    for (const RelocationRef &Reloc : Section.relocations()) {
+      if (!PrintedGroup) {
+        W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
+        W.indent();
+        PrintedGroup = true;
+      }
+
+      printRelocation(Section, Reloc);
+    }
+
+    if (PrintedGroup) {
+      W.unindent();
+      W.startLine() << "}\n";
+    }
+  }
+}
+
+void WasmDumper::printSymbols() {
+  ListScope Group(W, "Symbols");
+
+  for (const SymbolRef &Symbol : Obj->symbols())
+    printSymbol(Symbol);
+}
+
+void WasmDumper::printSectionHeaders() {
+  ListScope Group(W, "Sections");
+  for (const SectionRef &Section : Obj->sections()) {
+    const WasmSection &WasmSec = Obj->getWasmSection(Section);
+    DictScope SectionD(W, "Section");
+    W.printEnum("Type", WasmSec.Type, makeArrayRef(WasmSectionTypes));
+    W.printNumber("Size", static_cast<uint64_t>(WasmSec.Content.size()));
+    W.printNumber("Offset", WasmSec.Offset);
+    switch (WasmSec.Type) {
+    case wasm::WASM_SEC_CUSTOM:
+      W.printString("Name", WasmSec.Name);
+      if (WasmSec.Name == "linking") {
+        const wasm::WasmLinkingData &LinkingData = Obj->linkingData();
+        if (!LinkingData.InitFunctions.empty()) {
+          ListScope Group(W, "InitFunctions");
+          for (const wasm::WasmInitFunc &F : LinkingData.InitFunctions)
+            W.startLine() << F.Symbol << " (priority=" << F.Priority << ")\n";
+        }
+      }
+      break;
+    case wasm::WASM_SEC_DATA: {
+      ListScope Group(W, "Segments");
+      for (const WasmSegment &Segment : Obj->dataSegments()) {
+        const wasm::WasmDataSegment &Seg = Segment.Data;
+        DictScope Group(W, "Segment");
+        if (!Seg.Name.empty())
+          W.printString("Name", Seg.Name);
+        W.printNumber("Size", static_cast<uint64_t>(Seg.Content.size()));
+        if (Seg.Offset.Opcode == wasm::WASM_OPCODE_I32_CONST)
+          W.printNumber("Offset", Seg.Offset.Value.Int32);
+        else if (Seg.Offset.Opcode == wasm::WASM_OPCODE_I64_CONST)
+          W.printNumber("Offset", Seg.Offset.Value.Int64);
+        else
+          llvm_unreachable("unknown init expr opcode");
+      }
+      break;
+    }
+    case wasm::WASM_SEC_MEMORY:
+      ListScope Group(W, "Memories");
+      for (const wasm::WasmLimits &Memory : Obj->memories()) {
+        DictScope Group(W, "Memory");
+        W.printNumber("InitialPages", Memory.Initial);
+        if (Memory.Flags & wasm::WASM_LIMITS_FLAG_HAS_MAX) {
+          W.printNumber("MaxPages", WasmSec.Offset);
+        }
+      }
+      break;
+    }
+
+    if (opts::SectionRelocations) {
+      ListScope D(W, "Relocations");
+      for (const RelocationRef &Reloc : Section.relocations())
+        printRelocation(Section, Reloc);
+    }
+
+    if (opts::SectionData) {
+      W.printBinaryBlock("SectionData", WasmSec.Content);
+    }
+  }
+}
+
+void WasmDumper::printSymbol(const SymbolRef &Sym) {
+  DictScope D(W, "Symbol");
+  WasmSymbol Symbol = Obj->getWasmSymbol(Sym.getRawDataRefImpl());
+  W.printString("Name", Symbol.Info.Name);
+  W.printEnum("Type", Symbol.Info.Kind, makeArrayRef(WasmSymbolTypes));
+  W.printFlags("Flags", Symbol.Info.Flags, makeArrayRef(WasmSymbolFlags));
+
+  if (Symbol.Info.Flags & wasm::WASM_SYMBOL_UNDEFINED) {
+    if (Symbol.Info.ImportName) {
+      W.printString("ImportName", *Symbol.Info.ImportName);
+    }
+    if (Symbol.Info.ImportModule) {
+      W.printString("ImportModule", *Symbol.Info.ImportModule);
+    }
+  }
+  if (Symbol.Info.Kind != wasm::WASM_SYMBOL_TYPE_DATA) {
+    W.printHex("ElementIndex", Symbol.Info.ElementIndex);
+  } else if (!(Symbol.Info.Flags & wasm::WASM_SYMBOL_UNDEFINED)) {
+    W.printHex("Offset", Symbol.Info.DataRef.Offset);
+    W.printHex("Segment", Symbol.Info.DataRef.Segment);
+    W.printHex("Size", Symbol.Info.DataRef.Size);
+  }
+}
+
+} // namespace
+
+namespace llvm {
+
+std::unique_ptr<ObjDumper> createWasmDumper(const object::WasmObjectFile &Obj,
+                                            ScopedPrinter &Writer) {
+  return std::make_unique<WasmDumper>(&Obj, Writer);
+}
+
+} // namespace llvm
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/Win64EHDumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/Win64EHDumper.cpp
new file mode 100644
index 0000000000..7e84c1bca3
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/Win64EHDumper.cpp
@@ -0,0 +1,387 @@
+//===- Win64EHDumper.cpp - Win64 EH Printer ---------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "Win64EHDumper.h"
+#include "llvm-readobj.h"
+#include "llvm/Object/COFF.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Format.h"
+
+using namespace llvm;
+using namespace llvm::object;
+using namespace llvm::Win64EH;
+
+static const EnumEntry<unsigned> UnwindFlags[] = {
+  { "ExceptionHandler", UNW_ExceptionHandler },
+  { "TerminateHandler", UNW_TerminateHandler },
+  { "ChainInfo"       , UNW_ChainInfo        }
+};
+
+static const EnumEntry<unsigned> UnwindOpInfo[] = {
+  { "RAX",  0 },
+  { "RCX",  1 },
+  { "RDX",  2 },
+  { "RBX",  3 },
+  { "RSP",  4 },
+  { "RBP",  5 },
+  { "RSI",  6 },
+  { "RDI",  7 },
+  { "R8",   8 },
+  { "R9",   9 },
+  { "R10", 10 },
+  { "R11", 11 },
+  { "R12", 12 },
+  { "R13", 13 },
+  { "R14", 14 },
+  { "R15", 15 }
+};
+
+static uint64_t getOffsetOfLSDA(const UnwindInfo& UI) {
+  return static_cast<const char*>(UI.getLanguageSpecificData())
+         - reinterpret_cast<const char*>(&UI);
+}
+
+static uint32_t getLargeSlotValue(ArrayRef<UnwindCode> UC) {
+  if (UC.size() < 3)
+    return 0;
+  return UC[1].FrameOffset + (static_cast<uint32_t>(UC[2].FrameOffset) << 16);
+}
+
+// Returns the name of the unwind code.
+static StringRef getUnwindCodeTypeName(uint8_t Code) {
+  switch (Code) {
+  default: llvm_unreachable("Invalid unwind code");
+  case UOP_PushNonVol: return "PUSH_NONVOL";
+  case UOP_AllocLarge: return "ALLOC_LARGE";
+  case UOP_AllocSmall: return "ALLOC_SMALL";
+  case UOP_SetFPReg: return "SET_FPREG";
+  case UOP_SaveNonVol: return "SAVE_NONVOL";
+  case UOP_SaveNonVolBig: return "SAVE_NONVOL_FAR";
+  case UOP_SaveXMM128: return "SAVE_XMM128";
+  case UOP_SaveXMM128Big: return "SAVE_XMM128_FAR";
+  case UOP_PushMachFrame: return "PUSH_MACHFRAME";
+  }
+}
+
+// Returns the name of a referenced register.
+static StringRef getUnwindRegisterName(uint8_t Reg) {
+  switch (Reg) {
+  default: llvm_unreachable("Invalid register");
+  case 0: return "RAX";
+  case 1: return "RCX";
+  case 2: return "RDX";
+  case 3: return "RBX";
+  case 4: return "RSP";
+  case 5: return "RBP";
+  case 6: return "RSI";
+  case 7: return "RDI";
+  case 8: return "R8";
+  case 9: return "R9";
+  case 10: return "R10";
+  case 11: return "R11";
+  case 12: return "R12";
+  case 13: return "R13";
+  case 14: return "R14";
+  case 15: return "R15";
+  }
+}
+
+// Calculates the number of array slots required for the unwind code.
+static unsigned getNumUsedSlots(const UnwindCode &UnwindCode) {
+  switch (UnwindCode.getUnwindOp()) {
+  default: llvm_unreachable("Invalid unwind code");
+  case UOP_PushNonVol:
+  case UOP_AllocSmall:
+  case UOP_SetFPReg:
+  case UOP_PushMachFrame:
+    return 1;
+  case UOP_SaveNonVol:
+  case UOP_SaveXMM128:
+    return 2;
+  case UOP_SaveNonVolBig:
+  case UOP_SaveXMM128Big:
+    return 3;
+  case UOP_AllocLarge:
+    return (UnwindCode.getOpInfo() == 0) ? 2 : 3;
+  }
+}
+
+static std::error_code getSymbol(const COFFObjectFile &COFF, uint64_t VA,
+                                 object::SymbolRef &Sym) {
+  for (const auto &Symbol : COFF.symbols()) {
+    Expected<uint64_t> Address = Symbol.getAddress();
+    if (!Address)
+      return errorToErrorCode(Address.takeError());
+    if (*Address == VA) {
+      Sym = Symbol;
+      return std::error_code();
+    }
+  }
+  return inconvertibleErrorCode();
+}
+
+static std::string formatSymbol(const Dumper::Context &Ctx,
+                                const coff_section *Section, uint64_t Offset,
+                                uint32_t Displacement) {
+  std::string Buffer;
+  raw_string_ostream OS(Buffer);
+
+  SymbolRef Symbol;
+  if (!Ctx.ResolveSymbol(Section, Offset, Symbol, Ctx.UserData)) {
+    Expected<StringRef> Name = Symbol.getName();
+    if (Name) {
+      OS << *Name;
+      if (Displacement > 0)
+        OS << format(" +0x%X (0x%" PRIX64 ")", Displacement, Offset);
+      else
+        OS << format(" (0x%" PRIX64 ")", Offset);
+      return OS.str();
+    } else {
+      // TODO: Actually report errors helpfully.
+      consumeError(Name.takeError());
+    }
+  } else if (!getSymbol(Ctx.COFF, Ctx.COFF.getImageBase() + Displacement,
+                        Symbol)) {
+    Expected<StringRef> Name = Symbol.getName();
+    if (Name) {
+      OS << *Name;
+      OS << format(" (0x%" PRIX64 ")", Ctx.COFF.getImageBase() + Displacement);
+      return OS.str();
+    } else {
+      consumeError(Name.takeError());
+    }
+  }
+
+  if (Displacement > 0)
+    OS << format("(0x%" PRIX64 ")", Ctx.COFF.getImageBase() + Displacement);
+  else
+    OS << format("(0x%" PRIX64 ")", Offset);
+  return OS.str();
+}
+
+static std::error_code resolveRelocation(const Dumper::Context &Ctx,
+                                         const coff_section *Section,
+                                         uint64_t Offset,
+                                         const coff_section *&ResolvedSection,
+                                         uint64_t &ResolvedAddress) {
+  SymbolRef Symbol;
+  if (std::error_code EC =
+          Ctx.ResolveSymbol(Section, Offset, Symbol, Ctx.UserData))
+    return EC;
+
+  Expected<uint64_t> ResolvedAddressOrErr = Symbol.getAddress();
+  if (!ResolvedAddressOrErr)
+    return errorToErrorCode(ResolvedAddressOrErr.takeError());
+  ResolvedAddress = *ResolvedAddressOrErr;
+
+  Expected<section_iterator> SI = Symbol.getSection();
+  if (!SI)
+    return errorToErrorCode(SI.takeError());
+  ResolvedSection = Ctx.COFF.getCOFFSection(**SI);
+  return std::error_code();
+}
+
+static const object::coff_section *
+getSectionContaining(const COFFObjectFile &COFF, uint64_t VA) {
+  for (const auto &Section : COFF.sections()) {
+    uint64_t Address = Section.getAddress();
+    uint64_t Size = Section.getSize();
+
+    if (VA >= Address && (VA - Address) <= Size)
+      return COFF.getCOFFSection(Section);
+  }
+  return nullptr;
+}
+
+namespace llvm {
+namespace Win64EH {
+void Dumper::printRuntimeFunctionEntry(const Context &Ctx,
+                                       const coff_section *Section,
+                                       uint64_t Offset,
+                                       const RuntimeFunction &RF) {
+  SW.printString("StartAddress",
+                 formatSymbol(Ctx, Section, Offset + 0, RF.StartAddress));
+  SW.printString("EndAddress",
+                 formatSymbol(Ctx, Section, Offset + 4, RF.EndAddress));
+  SW.printString("UnwindInfoAddress",
+                 formatSymbol(Ctx, Section, Offset + 8, RF.UnwindInfoOffset));
+}
+
+// Prints one unwind code. Because an unwind code can occupy up to 3 slots in
+// the unwind codes array, this function requires that the correct number of
+// slots is provided.
+void Dumper::printUnwindCode(const UnwindInfo& UI, ArrayRef<UnwindCode> UC) {
+  assert(UC.size() >= getNumUsedSlots(UC[0]));
+
+  SW.startLine() << format("0x%02X: ", unsigned(UC[0].u.CodeOffset))
+                 << getUnwindCodeTypeName(UC[0].getUnwindOp());
+
+  switch (UC[0].getUnwindOp()) {
+  case UOP_PushNonVol:
+    OS << " reg=" << getUnwindRegisterName(UC[0].getOpInfo());
+    break;
+
+  case UOP_AllocLarge:
+    OS << " size="
+       << ((UC[0].getOpInfo() == 0) ? UC[1].FrameOffset * 8
+                                    : getLargeSlotValue(UC));
+    break;
+
+  case UOP_AllocSmall:
+    OS << " size=" << (UC[0].getOpInfo() + 1) * 8;
+    break;
+
+  case UOP_SetFPReg:
+    if (UI.getFrameRegister() == 0)
+      OS << " reg=<invalid>";
+    else
+      OS << " reg=" << getUnwindRegisterName(UI.getFrameRegister())
+         << format(", offset=0x%X", UI.getFrameOffset() * 16);
+    break;
+
+  case UOP_SaveNonVol:
+    OS << " reg=" << getUnwindRegisterName(UC[0].getOpInfo())
+       << format(", offset=0x%X", UC[1].FrameOffset * 8);
+    break;
+
+  case UOP_SaveNonVolBig:
+    OS << " reg=" << getUnwindRegisterName(UC[0].getOpInfo())
+       << format(", offset=0x%X", getLargeSlotValue(UC));
+    break;
+
+  case UOP_SaveXMM128:
+    OS << " reg=XMM" << static_cast<uint32_t>(UC[0].getOpInfo())
+       << format(", offset=0x%X", UC[1].FrameOffset * 16);
+    break;
+
+  case UOP_SaveXMM128Big:
+    OS << " reg=XMM" << static_cast<uint32_t>(UC[0].getOpInfo())
+       << format(", offset=0x%X", getLargeSlotValue(UC));
+    break;
+
+  case UOP_PushMachFrame:
+    OS << " errcode=" << (UC[0].getOpInfo() == 0 ? "no" : "yes");
+    break;
+  }
+
+  OS << "\n";
+}
+
+void Dumper::printUnwindInfo(const Context &Ctx, const coff_section *Section,
+                             off_t Offset, const UnwindInfo &UI) {
+  DictScope UIS(SW, "UnwindInfo");
+  SW.printNumber("Version", UI.getVersion());
+  SW.printFlags("Flags", UI.getFlags(), makeArrayRef(UnwindFlags));
+  SW.printNumber("PrologSize", UI.PrologSize);
+  if (UI.getFrameRegister()) {
+    SW.printEnum("FrameRegister", UI.getFrameRegister(),
+                 makeArrayRef(UnwindOpInfo));
+    SW.printHex("FrameOffset", UI.getFrameOffset());
+  } else {
+    SW.printString("FrameRegister", StringRef("-"));
+    SW.printString("FrameOffset", StringRef("-"));
+  }
+
+  SW.printNumber("UnwindCodeCount", UI.NumCodes);
+  {
+    ListScope UCS(SW, "UnwindCodes");
+    ArrayRef<UnwindCode> UC(&UI.UnwindCodes[0], UI.NumCodes);
+    for (const UnwindCode *UCI = UC.begin(), *UCE = UC.end(); UCI < UCE; ++UCI) {
+      unsigned UsedSlots = getNumUsedSlots(*UCI);
+      if (UsedSlots > UC.size()) {
+        errs() << "corrupt unwind data";
+        return;
+      }
+
+      printUnwindCode(UI, makeArrayRef(UCI, UCE));
+      UCI = UCI + UsedSlots - 1;
+    }
+  }
+
+  uint64_t LSDAOffset = Offset + getOffsetOfLSDA(UI);
+  if (UI.getFlags() & (UNW_ExceptionHandler | UNW_TerminateHandler)) {
+    SW.printString("Handler",
+                   formatSymbol(Ctx, Section, LSDAOffset,
+                                UI.getLanguageSpecificHandlerOffset()));
+  } else if (UI.getFlags() & UNW_ChainInfo) {
+    if (const RuntimeFunction *Chained = UI.getChainedFunctionEntry()) {
+      DictScope CS(SW, "Chained");
+      printRuntimeFunctionEntry(Ctx, Section, LSDAOffset, *Chained);
+    }
+  }
+}
+
+void Dumper::printRuntimeFunction(const Context &Ctx,
+                                  const coff_section *Section,
+                                  uint64_t SectionOffset,
+                                  const RuntimeFunction &RF) {
+  DictScope RFS(SW, "RuntimeFunction");
+  printRuntimeFunctionEntry(Ctx, Section, SectionOffset, RF);
+
+  const coff_section *XData = nullptr;
+  uint64_t Offset;
+  resolveRelocation(Ctx, Section, SectionOffset + 8, XData, Offset);
+  Offset = Offset + RF.UnwindInfoOffset;
+
+  if (!XData) {
+    uint64_t Address = Ctx.COFF.getImageBase() + RF.UnwindInfoOffset;
+    XData = getSectionContaining(Ctx.COFF, Address);
+    if (!XData)
+      return;
+    Offset = RF.UnwindInfoOffset - XData->VirtualAddress;
+  }
+
+  ArrayRef<uint8_t> Contents;
+  if (Error E = Ctx.COFF.getSectionContents(XData, Contents))
+    reportError(std::move(E), Ctx.COFF.getFileName());
+
+  if (Contents.empty())
+    return;
+
+  if (Offset > Contents.size())
+    return;
+
+  const auto UI = reinterpret_cast<const UnwindInfo*>(Contents.data() + Offset);
+  printUnwindInfo(Ctx, XData, Offset, *UI);
+}
+
+void Dumper::printData(const Context &Ctx) {
+  for (const auto &Section : Ctx.COFF.sections()) {
+    StringRef Name;
+    if (Expected<StringRef> NameOrErr = Section.getName())
+      Name = *NameOrErr;
+    else
+      consumeError(NameOrErr.takeError());
+
+    if (Name != ".pdata" && !Name.startswith(".pdata$"))
+      continue;
+
+    const coff_section *PData = Ctx.COFF.getCOFFSection(Section);
+    ArrayRef<uint8_t> Contents;
+
+    if (Error E = Ctx.COFF.getSectionContents(PData, Contents))
+      reportError(std::move(E), Ctx.COFF.getFileName());
+    if (Contents.empty())
+      continue;
+
+    const RuntimeFunction *Entries =
+      reinterpret_cast<const RuntimeFunction *>(Contents.data());
+    const size_t Count = Contents.size() / sizeof(RuntimeFunction);
+    ArrayRef<RuntimeFunction> RuntimeFunctions(Entries, Count);
+
+    size_t Index = 0;
+    for (const auto &RF : RuntimeFunctions) {
+      printRuntimeFunction(Ctx, Ctx.COFF.getCOFFSection(Section),
+                           Index * sizeof(RuntimeFunction), RF);
+      ++Index;
+    }
+  }
+}
+}
+}
+
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/Win64EHDumper.h b/contrib/libs/llvm12/tools/llvm-readobj/Win64EHDumper.h
new file mode 100644
index 0000000000..97458c916b
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/Win64EHDumper.h
@@ -0,0 +1,62 @@
+//===- Win64EHDumper.h - Win64 EH Printing ----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_READOBJ_WIN64EHDUMPER_H
+#define LLVM_TOOLS_LLVM_READOBJ_WIN64EHDUMPER_H
+
+#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/Win64EH.h"
+
+namespace llvm {
+namespace object {
+class COFFObjectFile;
+class SymbolRef;
+struct coff_section;
+}
+
+namespace Win64EH {
+class Dumper {
+  ScopedPrinter &SW;
+  raw_ostream &OS;
+
+public:
+  typedef std::error_code (*SymbolResolver)(const object::coff_section *,
+                                            uint64_t, object::SymbolRef &,
+                                            void *);
+
+  struct Context {
+    const object::COFFObjectFile &COFF;
+    SymbolResolver ResolveSymbol;
+    void *UserData;
+
+    Context(const object::COFFObjectFile &COFF, SymbolResolver Resolver,
+            void *UserData)
+      : COFF(COFF), ResolveSymbol(Resolver), UserData(UserData) {}
+  };
+
+private:
+  void printRuntimeFunctionEntry(const Context &Ctx,
+                                 const object::coff_section *Section,
+                                 uint64_t SectionOffset,
+                                 const RuntimeFunction &RF);
+  void printUnwindCode(const UnwindInfo& UI, ArrayRef<UnwindCode> UC);
+  void printUnwindInfo(const Context &Ctx, const object::coff_section *Section,
+                       off_t Offset, const UnwindInfo &UI);
+  void printRuntimeFunction(const Context &Ctx,
+                            const object::coff_section *Section,
+                            uint64_t SectionOffset, const RuntimeFunction &RF);
+
+public:
+  Dumper(ScopedPrinter &SW) : SW(SW), OS(SW.getOStream()) {}
+
+  void printData(const Context &Ctx);
+};
+}
+}
+
+#endif
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/WindowsResourceDumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/WindowsResourceDumper.cpp
new file mode 100644
index 0000000000..fb085ecaa7
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/WindowsResourceDumper.cpp
@@ -0,0 +1,84 @@
+//===-- WindowsResourceDumper.cpp - Windows Resource printer --------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Windows resource (.res) dumper for llvm-readobj.
+//
+//===----------------------------------------------------------------------===//
+
+#include "WindowsResourceDumper.h"
+#include "llvm/Object/WindowsResource.h"
+#include "llvm/Support/ConvertUTF.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+namespace llvm {
+namespace object {
+namespace WindowsRes {
+
+std::string stripUTF16(const ArrayRef<UTF16> &UTF16Str) {
+  std::string Result;
+  Result.reserve(UTF16Str.size());
+
+  for (UTF16 Ch : UTF16Str) {
+    // UTF16Str will have swapped byte order in case of big-endian machines.
+    // Swap it back in such a case.
+    uint16_t ChValue = support::endian::byte_swap(Ch, support::little);
+    if (ChValue <= 0xFF)
+      Result += ChValue;
+    else
+      Result += '?';
+  }
+  return Result;
+}
+
+Error Dumper::printData() {
+  auto EntryPtrOrErr = WinRes->getHeadEntry();
+  if (!EntryPtrOrErr)
+    return EntryPtrOrErr.takeError();
+  auto EntryPtr = *EntryPtrOrErr;
+
+  bool IsEnd = false;
+  while (!IsEnd) {
+    printEntry(EntryPtr);
+
+    if (auto Err = EntryPtr.moveNext(IsEnd))
+      return Err;
+  }
+  return Error::success();
+}
+
+void Dumper::printEntry(const ResourceEntryRef &Ref) {
+  if (Ref.checkTypeString()) {
+    auto NarrowStr = stripUTF16(Ref.getTypeString());
+    SW.printString("Resource type (string)", NarrowStr);
+  } else {
+    SmallString<20> IDStr;
+    raw_svector_ostream OS(IDStr);
+    printResourceTypeName(Ref.getTypeID(), OS);
+    SW.printString("Resource type (int)", IDStr);
+  }
+
+  if (Ref.checkNameString()) {
+    auto NarrowStr = stripUTF16(Ref.getNameString());
+    SW.printString("Resource name (string)", NarrowStr);
+  } else
+    SW.printNumber("Resource name (int)", Ref.getNameID());
+
+  SW.printNumber("Data version", Ref.getDataVersion());
+  SW.printHex("Memory flags", Ref.getMemoryFlags());
+  SW.printNumber("Language ID", Ref.getLanguage());
+  SW.printNumber("Version (major)", Ref.getMajorVersion());
+  SW.printNumber("Version (minor)", Ref.getMinorVersion());
+  SW.printNumber("Characteristics", Ref.getCharacteristics());
+  SW.printNumber("Data size", (uint64_t)Ref.getData().size());
+  SW.printBinary("Data:", Ref.getData());
+  SW.startLine() << "\n";
+}
+
+} // namespace WindowsRes
+} // namespace object
+} // namespace llvm
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/WindowsResourceDumper.h b/contrib/libs/llvm12/tools/llvm-readobj/WindowsResourceDumper.h
new file mode 100644
index 0000000000..6a5878804e
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/WindowsResourceDumper.h
@@ -0,0 +1,36 @@
+//===- WindowsResourceDumper.h - Windows Resource printer -------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_READOBJ_WINDOWSRESOURCEDUMPER_H
+#define LLVM_TOOLS_LLVM_READOBJ_WINDOWSRESOURCEDUMPER_H
+
+#include "llvm/Object/WindowsResource.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+namespace llvm {
+namespace object {
+namespace WindowsRes {
+
+class Dumper {
+public:
+  Dumper(WindowsResource *Res, ScopedPrinter &SW) : SW(SW), WinRes(Res) {}
+
+  Error printData();
+
+private:
+  ScopedPrinter &SW;
+  WindowsResource *WinRes;
+
+  void printEntry(const ResourceEntryRef &Ref);
+};
+
+} // namespace WindowsRes
+} // namespace object
+} // namespace llvm
+
+#endif
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/XCOFFDumper.cpp b/contrib/libs/llvm12/tools/llvm-readobj/XCOFFDumper.cpp
new file mode 100644
index 0000000000..8f0f18cedc
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/XCOFFDumper.cpp
@@ -0,0 +1,521 @@
+//===-- XCOFFDumper.cpp - XCOFF dumping utility -----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements an XCOFF specific dumper for llvm-readobj.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ObjDumper.h"
+#include "llvm-readobj.h"
+#include "llvm/Object/XCOFFObjectFile.h"
+#include "llvm/Support/ScopedPrinter.h"
+
+using namespace llvm;
+using namespace object;
+
+namespace {
+
+class XCOFFDumper : public ObjDumper {
+
+public:
+  XCOFFDumper(const XCOFFObjectFile &Obj, ScopedPrinter &Writer)
+      : ObjDumper(Writer, Obj.getFileName()), Obj(Obj) {}
+
+  void printFileHeaders() override;
+  void printSectionHeaders() override;
+  void printRelocations() override;
+  void printSymbols() override;
+  void printDynamicSymbols() override;
+  void printUnwindInfo() override;
+  void printStackMap() const override;
+  void printNeededLibraries() override;
+
+private:
+  template <typename T> void printSectionHeaders(ArrayRef<T> Sections);
+  template <typename T> void printGenericSectionHeader(T &Sec) const;
+  template <typename T> void printOverflowSectionHeader(T &Sec) const;
+  void printFileAuxEnt(const XCOFFFileAuxEnt *AuxEntPtr);
+  void printCsectAuxEnt32(const XCOFFCsectAuxEnt32 *AuxEntPtr);
+  void printSectAuxEntForStat(const XCOFFSectAuxEntForStat *AuxEntPtr);
+  void printSymbol(const SymbolRef &);
+  void printRelocations(ArrayRef<XCOFFSectionHeader32> Sections);
+  const XCOFFObjectFile &Obj;
+};
+} // anonymous namespace
+
+void XCOFFDumper::printFileHeaders() {
+  DictScope DS(W, "FileHeader");
+  W.printHex("Magic", Obj.getMagic());
+  W.printNumber("NumberOfSections", Obj.getNumberOfSections());
+
+  // Negative timestamp values are reserved for future use.
+  int32_t TimeStamp = Obj.getTimeStamp();
+  if (TimeStamp > 0) {
+    // This handling of the time stamp assumes that the host system's time_t is
+    // compatible with AIX time_t. If a platform is not compatible, the lit
+    // tests will let us know.
+    time_t TimeDate = TimeStamp;
+
+    char FormattedTime[21] = {};
+    size_t BytesWritten =
+        strftime(FormattedTime, 21, "%Y-%m-%dT%H:%M:%SZ", gmtime(&TimeDate));
+    if (BytesWritten)
+      W.printHex("TimeStamp", FormattedTime, TimeStamp);
+    else
+      W.printHex("Timestamp", TimeStamp);
+  } else {
+    W.printHex("TimeStamp", TimeStamp == 0 ? "None" : "Reserved Value",
+               TimeStamp);
+  }
+
+  // The number of symbol table entries is an unsigned value in 64-bit objects
+  // and a signed value (with negative values being 'reserved') in 32-bit
+  // objects.
+  if (Obj.is64Bit()) {
+    W.printHex("SymbolTableOffset", Obj.getSymbolTableOffset64());
+    W.printNumber("SymbolTableEntries", Obj.getNumberOfSymbolTableEntries64());
+  } else {
+    W.printHex("SymbolTableOffset", Obj.getSymbolTableOffset32());
+    int32_t SymTabEntries = Obj.getRawNumberOfSymbolTableEntries32();
+    if (SymTabEntries >= 0)
+      W.printNumber("SymbolTableEntries", SymTabEntries);
+    else
+      W.printHex("SymbolTableEntries", "Reserved Value", SymTabEntries);
+  }
+
+  W.printHex("OptionalHeaderSize", Obj.getOptionalHeaderSize());
+  W.printHex("Flags", Obj.getFlags());
+
+  // TODO FIXME Add support for the auxiliary header (if any) once
+  // XCOFFObjectFile has the necessary support.
+}
+
+void XCOFFDumper::printSectionHeaders() {
+  if (Obj.is64Bit())
+    printSectionHeaders(Obj.sections64());
+  else
+    printSectionHeaders(Obj.sections32());
+}
+
+void XCOFFDumper::printRelocations() {
+  if (Obj.is64Bit())
+    llvm_unreachable("64-bit relocation output not implemented!");
+  else
+    printRelocations(Obj.sections32());
+}
+
+static const EnumEntry<XCOFF::RelocationType> RelocationTypeNameclass[] = {
+#define ECase(X)                                                               \
+  { #X, XCOFF::X }
+    ECase(R_POS),    ECase(R_RL),     ECase(R_RLA),    ECase(R_NEG),
+    ECase(R_REL),    ECase(R_TOC),    ECase(R_TRL),    ECase(R_TRLA),
+    ECase(R_GL),     ECase(R_TCL),    ECase(R_REF),    ECase(R_BA),
+    ECase(R_BR),     ECase(R_RBA),    ECase(R_RBR),    ECase(R_TLS),
+    ECase(R_TLS_IE), ECase(R_TLS_LD), ECase(R_TLS_LE), ECase(R_TLSM),
+    ECase(R_TLSML),  ECase(R_TOCU),   ECase(R_TOCL)
+#undef ECase
+};
+
+void XCOFFDumper::printRelocations(ArrayRef<XCOFFSectionHeader32> Sections) {
+  if (!opts::ExpandRelocs)
+    report_fatal_error("Unexpanded relocation output not implemented.");
+
+  ListScope LS(W, "Relocations");
+  uint16_t Index = 0;
+  for (const auto &Sec : Sections) {
+    ++Index;
+    // Only the .text, .data, .tdata, and STYP_DWARF sections have relocation.
+    if (Sec.Flags != XCOFF::STYP_TEXT && Sec.Flags != XCOFF::STYP_DATA &&
+        Sec.Flags != XCOFF::STYP_TDATA && Sec.Flags != XCOFF::STYP_DWARF)
+      continue;
+    auto Relocations = unwrapOrError(Obj.getFileName(), Obj.relocations(Sec));
+    if (Relocations.empty())
+      continue;
+
+    W.startLine() << "Section (index: " << Index << ") " << Sec.getName()
+                  << " {\n";
+    for (auto Reloc : Relocations) {
+      StringRef SymbolName = unwrapOrError(
+          Obj.getFileName(), Obj.getSymbolNameByIndex(Reloc.SymbolIndex));
+
+      DictScope RelocScope(W, "Relocation");
+      W.printHex("Virtual Address", Reloc.VirtualAddress);
+      W.printNumber("Symbol", SymbolName, Reloc.SymbolIndex);
+      W.printString("IsSigned", Reloc.isRelocationSigned() ? "Yes" : "No");
+      W.printNumber("FixupBitValue", Reloc.isFixupIndicated() ? 1 : 0);
+      W.printNumber("Length", Reloc.getRelocatedLength());
+      W.printEnum("Type", (uint8_t)Reloc.Type,
+                  makeArrayRef(RelocationTypeNameclass));
+    }
+    W.unindent();
+    W.startLine() << "}\n";
+  }
+}
+
+static const EnumEntry<XCOFF::CFileStringType> FileStringType[] = {
+#define ECase(X)                                                               \
+  { #X, XCOFF::X }
+    ECase(XFT_FN), ECase(XFT_CT), ECase(XFT_CV), ECase(XFT_CD)
+#undef ECase
+};
+
+void XCOFFDumper::printFileAuxEnt(const XCOFFFileAuxEnt *AuxEntPtr) {
+  if (Obj.is64Bit())
+    report_fatal_error(
+        "Printing for File Auxiliary Entry in 64-bit is unimplemented.");
+  StringRef FileName =
+      unwrapOrError(Obj.getFileName(), Obj.getCFileName(AuxEntPtr));
+  DictScope SymDs(W, "File Auxiliary Entry");
+  W.printNumber("Index",
+                Obj.getSymbolIndex(reinterpret_cast<uintptr_t>(AuxEntPtr)));
+  W.printString("Name", FileName);
+  W.printEnum("Type", static_cast<uint8_t>(AuxEntPtr->Type),
+              makeArrayRef(FileStringType));
+}
+
+static const EnumEntry<XCOFF::StorageMappingClass> CsectStorageMappingClass[] =
+    {
+#define ECase(X)                                                               \
+  { #X, XCOFF::X }
+        ECase(XMC_PR),   ECase(XMC_RO),     ECase(XMC_DB),
+        ECase(XMC_GL),   ECase(XMC_XO),     ECase(XMC_SV),
+        ECase(XMC_SV64), ECase(XMC_SV3264), ECase(XMC_TI),
+        ECase(XMC_TB),   ECase(XMC_RW),     ECase(XMC_TC0),
+        ECase(XMC_TC),   ECase(XMC_TD),     ECase(XMC_DS),
+        ECase(XMC_UA),   ECase(XMC_BS),     ECase(XMC_UC),
+        ECase(XMC_TL),   ECase(XMC_TE)
+#undef ECase
+};
+
+static const EnumEntry<XCOFF::SymbolType> CsectSymbolTypeClass[] = {
+#define ECase(X)                                                               \
+  { #X, XCOFF::X }
+    ECase(XTY_ER), ECase(XTY_SD), ECase(XTY_LD), ECase(XTY_CM)
+#undef ECase
+};
+
+void XCOFFDumper::printCsectAuxEnt32(const XCOFFCsectAuxEnt32 *AuxEntPtr) {
+  assert(!Obj.is64Bit() && "32-bit interface called on 64-bit object file.");
+
+  DictScope SymDs(W, "CSECT Auxiliary Entry");
+  W.printNumber("Index",
+                Obj.getSymbolIndex(reinterpret_cast<uintptr_t>(AuxEntPtr)));
+  if (AuxEntPtr->isLabel())
+    W.printNumber("ContainingCsectSymbolIndex", AuxEntPtr->SectionOrLength);
+  else
+    W.printNumber("SectionLen", AuxEntPtr->SectionOrLength);
+  W.printHex("ParameterHashIndex", AuxEntPtr->ParameterHashIndex);
+  W.printHex("TypeChkSectNum", AuxEntPtr->TypeChkSectNum);
+  // Print out symbol alignment and type.
+  W.printNumber("SymbolAlignmentLog2", AuxEntPtr->getAlignmentLog2());
+  W.printEnum("SymbolType", AuxEntPtr->getSymbolType(),
+              makeArrayRef(CsectSymbolTypeClass));
+  W.printEnum("StorageMappingClass",
+              static_cast<uint8_t>(AuxEntPtr->StorageMappingClass),
+              makeArrayRef(CsectStorageMappingClass));
+  W.printHex("StabInfoIndex", AuxEntPtr->StabInfoIndex);
+  W.printHex("StabSectNum", AuxEntPtr->StabSectNum);
+}
+
+void XCOFFDumper::printSectAuxEntForStat(
+    const XCOFFSectAuxEntForStat *AuxEntPtr) {
+  assert(!Obj.is64Bit() && "32-bit interface called on 64-bit object file.");
+
+  DictScope SymDs(W, "Sect Auxiliary Entry For Stat");
+  W.printNumber("Index",
+                Obj.getSymbolIndex(reinterpret_cast<uintptr_t>(AuxEntPtr)));
+  W.printNumber("SectionLength", AuxEntPtr->SectionLength);
+
+  // Unlike the corresponding fields in the section header, NumberOfRelocEnt
+  // and NumberOfLineNum do not handle values greater than 65535.
+  W.printNumber("NumberOfRelocEnt", AuxEntPtr->NumberOfRelocEnt);
+  W.printNumber("NumberOfLineNum", AuxEntPtr->NumberOfLineNum);
+}
+
+static const EnumEntry<XCOFF::StorageClass> SymStorageClass[] = {
+#define ECase(X)                                                               \
+  { #X, XCOFF::X }
+    ECase(C_NULL),  ECase(C_AUTO),    ECase(C_EXT),     ECase(C_STAT),
+    ECase(C_REG),   ECase(C_EXTDEF),  ECase(C_LABEL),   ECase(C_ULABEL),
+    ECase(C_MOS),   ECase(C_ARG),     ECase(C_STRTAG),  ECase(C_MOU),
+    ECase(C_UNTAG), ECase(C_TPDEF),   ECase(C_USTATIC), ECase(C_ENTAG),
+    ECase(C_MOE),   ECase(C_REGPARM), ECase(C_FIELD),   ECase(C_BLOCK),
+    ECase(C_FCN),   ECase(C_EOS),     ECase(C_FILE),    ECase(C_LINE),
+    ECase(C_ALIAS), ECase(C_HIDDEN),  ECase(C_HIDEXT),  ECase(C_BINCL),
+    ECase(C_EINCL), ECase(C_INFO),    ECase(C_WEAKEXT), ECase(C_DWARF),
+    ECase(C_GSYM),  ECase(C_LSYM),    ECase(C_PSYM),    ECase(C_RSYM),
+    ECase(C_RPSYM), ECase(C_STSYM),   ECase(C_TCSYM),   ECase(C_BCOMM),
+    ECase(C_ECOML), ECase(C_ECOMM),   ECase(C_DECL),    ECase(C_ENTRY),
+    ECase(C_FUN),   ECase(C_BSTAT),   ECase(C_ESTAT),   ECase(C_GTLS),
+    ECase(C_STTLS), ECase(C_EFCN)
+#undef ECase
+};
+
+static StringRef GetSymbolValueName(XCOFF::StorageClass SC) {
+  switch (SC) {
+  case XCOFF::C_EXT:
+  case XCOFF::C_WEAKEXT:
+  case XCOFF::C_HIDEXT:
+  case XCOFF::C_STAT:
+    return "Value (RelocatableAddress)";
+  case XCOFF::C_FILE:
+    return "Value (SymbolTableIndex)";
+  case XCOFF::C_FCN:
+  case XCOFF::C_BLOCK:
+  case XCOFF::C_FUN:
+  case XCOFF::C_STSYM:
+  case XCOFF::C_BINCL:
+  case XCOFF::C_EINCL:
+  case XCOFF::C_INFO:
+  case XCOFF::C_BSTAT:
+  case XCOFF::C_LSYM:
+  case XCOFF::C_PSYM:
+  case XCOFF::C_RPSYM:
+  case XCOFF::C_RSYM:
+  case XCOFF::C_ECOML:
+  case XCOFF::C_DWARF:
+    assert(false && "This StorageClass for the symbol is not yet implemented.");
+    return "";
+  default:
+    return "Value";
+  }
+}
+
+static const EnumEntry<XCOFF::CFileLangId> CFileLangIdClass[] = {
+#define ECase(X)                                                               \
+  { #X, XCOFF::X }
+    ECase(TB_C), ECase(TB_CPLUSPLUS)
+#undef ECase
+};
+
+static const EnumEntry<XCOFF::CFileCpuId> CFileCpuIdClass[] = {
+#define ECase(X)                                                               \
+  { #X, XCOFF::X }
+    ECase(TCPU_PPC64), ECase(TCPU_COM), ECase(TCPU_970)
+#undef ECase
+};
+
+void XCOFFDumper::printSymbol(const SymbolRef &S) {
+  if (Obj.is64Bit())
+    report_fatal_error("64-bit support is unimplemented.");
+
+  DataRefImpl SymbolDRI = S.getRawDataRefImpl();
+  const XCOFFSymbolEntry *SymbolEntPtr = Obj.toSymbolEntry(SymbolDRI);
+
+  XCOFFSymbolRef XCOFFSymRef(SymbolDRI, &Obj);
+  uint8_t NumberOfAuxEntries = XCOFFSymRef.getNumberOfAuxEntries();
+
+  DictScope SymDs(W, "Symbol");
+
+  StringRef SymbolName =
+      unwrapOrError(Obj.getFileName(), Obj.getSymbolName(SymbolDRI));
+
+  W.printNumber("Index",
+                Obj.getSymbolIndex(reinterpret_cast<uintptr_t>(SymbolEntPtr)));
+  W.printString("Name", SymbolName);
+  W.printHex(GetSymbolValueName(SymbolEntPtr->StorageClass),
+             SymbolEntPtr->Value);
+
+  StringRef SectionName =
+      unwrapOrError(Obj.getFileName(), Obj.getSymbolSectionName(SymbolEntPtr));
+
+  W.printString("Section", SectionName);
+  if (XCOFFSymRef.getStorageClass() == XCOFF::C_FILE) {
+    W.printEnum("Source Language ID",
+                SymbolEntPtr->CFileLanguageIdAndTypeId.LanguageId,
+                makeArrayRef(CFileLangIdClass));
+    W.printEnum("CPU Version ID",
+                SymbolEntPtr->CFileLanguageIdAndTypeId.CpuTypeId,
+                makeArrayRef(CFileCpuIdClass));
+  } else
+    W.printHex("Type", SymbolEntPtr->SymbolType);
+
+  W.printEnum("StorageClass", static_cast<uint8_t>(SymbolEntPtr->StorageClass),
+              makeArrayRef(SymStorageClass));
+  W.printNumber("NumberOfAuxEntries", SymbolEntPtr->NumberOfAuxEntries);
+
+  if (NumberOfAuxEntries == 0)
+    return;
+
+  switch (XCOFFSymRef.getStorageClass()) {
+  case XCOFF::C_FILE:
+    // If the symbol is C_FILE and has auxiliary entries...
+    for (int i = 1; i <= NumberOfAuxEntries; i++) {
+      const XCOFFFileAuxEnt *FileAuxEntPtr =
+          reinterpret_cast<const XCOFFFileAuxEnt *>(SymbolEntPtr + i);
+#ifndef NDEBUG
+      Obj.checkSymbolEntryPointer(reinterpret_cast<uintptr_t>(FileAuxEntPtr));
+#endif
+      printFileAuxEnt(FileAuxEntPtr);
+    }
+    break;
+  case XCOFF::C_EXT:
+  case XCOFF::C_WEAKEXT:
+  case XCOFF::C_HIDEXT:
+    // If the symbol is for a function, and it has more than 1 auxiliary entry,
+    // then one of them must be function auxiliary entry which we do not
+    // support yet.
+    if (XCOFFSymRef.isFunction() && NumberOfAuxEntries >= 2)
+      report_fatal_error("Function auxiliary entry printing is unimplemented.");
+
+    // If there is more than 1 auxiliary entry, instead of printing out
+    // error information, print out the raw Auxiliary entry from 1st till
+    // the last - 1. The last one must be a CSECT Auxiliary Entry.
+    for (int i = 1; i < NumberOfAuxEntries; i++) {
+      W.startLine() << "!Unexpected raw auxiliary entry data:\n";
+      W.startLine() << format_bytes(
+          ArrayRef<uint8_t>(reinterpret_cast<const uint8_t *>(SymbolEntPtr + i),
+                            XCOFF::SymbolTableEntrySize));
+    }
+
+    // The symbol's last auxiliary entry is a CSECT Auxiliary Entry.
+    printCsectAuxEnt32(XCOFFSymRef.getXCOFFCsectAuxEnt32());
+    break;
+  case XCOFF::C_STAT:
+    if (NumberOfAuxEntries > 1)
+      report_fatal_error(
+          "C_STAT symbol should not have more than 1 auxiliary entry.");
+
+    const XCOFFSectAuxEntForStat *StatAuxEntPtr;
+    StatAuxEntPtr =
+        reinterpret_cast<const XCOFFSectAuxEntForStat *>(SymbolEntPtr + 1);
+#ifndef NDEBUG
+    Obj.checkSymbolEntryPointer(reinterpret_cast<uintptr_t>(StatAuxEntPtr));
+#endif
+    printSectAuxEntForStat(StatAuxEntPtr);
+    break;
+  case XCOFF::C_DWARF:
+  case XCOFF::C_BLOCK:
+  case XCOFF::C_FCN:
+    report_fatal_error("Symbol table entry printing for this storage class "
+                       "type is unimplemented.");
+    break;
+  default:
+    for (int i = 1; i <= NumberOfAuxEntries; i++) {
+      W.startLine() << "!Unexpected raw auxiliary entry data:\n";
+      W.startLine() << format_bytes(
+          ArrayRef<uint8_t>(reinterpret_cast<const uint8_t *>(SymbolEntPtr + i),
+                            XCOFF::SymbolTableEntrySize));
+    }
+    break;
+  }
+}
+
+void XCOFFDumper::printSymbols() {
+  ListScope Group(W, "Symbols");
+  for (const SymbolRef &S : Obj.symbols())
+    printSymbol(S);
+}
+
+void XCOFFDumper::printDynamicSymbols() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printUnwindInfo() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printStackMap() const {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+void XCOFFDumper::printNeededLibraries() {
+  llvm_unreachable("Unimplemented functionality for XCOFFDumper");
+}
+
+static const EnumEntry<XCOFF::SectionTypeFlags> SectionTypeFlagsNames[] = {
+#define ECase(X)                                                               \
+  { #X, XCOFF::X }
+    ECase(STYP_PAD),    ECase(STYP_DWARF), ECase(STYP_TEXT),
+    ECase(STYP_DATA),   ECase(STYP_BSS),   ECase(STYP_EXCEPT),
+    ECase(STYP_INFO),   ECase(STYP_TDATA), ECase(STYP_TBSS),
+    ECase(STYP_LOADER), ECase(STYP_DEBUG), ECase(STYP_TYPCHK),
+    ECase(STYP_OVRFLO)
+#undef ECase
+};
+
+template <typename T>
+void XCOFFDumper::printOverflowSectionHeader(T &Sec) const {
+  if (Obj.is64Bit()) {
+    reportWarning(make_error<StringError>("An 64-bit XCOFF object file may not "
+                                          "contain an overflow section header.",
+                                          object_error::parse_failed),
+                  Obj.getFileName());
+  }
+
+  W.printString("Name", Sec.getName());
+  W.printNumber("NumberOfRelocations", Sec.PhysicalAddress);
+  W.printNumber("NumberOfLineNumbers", Sec.VirtualAddress);
+  W.printHex("Size", Sec.SectionSize);
+  W.printHex("RawDataOffset", Sec.FileOffsetToRawData);
+  W.printHex("RelocationPointer", Sec.FileOffsetToRelocationInfo);
+  W.printHex("LineNumberPointer", Sec.FileOffsetToLineNumberInfo);
+  W.printNumber("IndexOfSectionOverflowed", Sec.NumberOfRelocations);
+  W.printNumber("IndexOfSectionOverflowed", Sec.NumberOfLineNumbers);
+}
+
+template <typename T>
+void XCOFFDumper::printGenericSectionHeader(T &Sec) const {
+  W.printString("Name", Sec.getName());
+  W.printHex("PhysicalAddress", Sec.PhysicalAddress);
+  W.printHex("VirtualAddress", Sec.VirtualAddress);
+  W.printHex("Size", Sec.SectionSize);
+  W.printHex("RawDataOffset", Sec.FileOffsetToRawData);
+  W.printHex("RelocationPointer", Sec.FileOffsetToRelocationInfo);
+  W.printHex("LineNumberPointer", Sec.FileOffsetToLineNumberInfo);
+  W.printNumber("NumberOfRelocations", Sec.NumberOfRelocations);
+  W.printNumber("NumberOfLineNumbers", Sec.NumberOfLineNumbers);
+}
+
+template <typename T>
+void XCOFFDumper::printSectionHeaders(ArrayRef<T> Sections) {
+  ListScope Group(W, "Sections");
+
+  uint16_t Index = 1;
+  for (const T &Sec : Sections) {
+    DictScope SecDS(W, "Section");
+
+    W.printNumber("Index", Index++);
+    uint16_t SectionType = Sec.getSectionType();
+    switch (SectionType) {
+    case XCOFF::STYP_OVRFLO:
+      printOverflowSectionHeader(Sec);
+      break;
+    case XCOFF::STYP_LOADER:
+    case XCOFF::STYP_EXCEPT:
+    case XCOFF::STYP_TYPCHK:
+      // TODO The interpretation of loader, exception and type check section
+      // headers are different from that of generic section headers. We will
+      // implement them later. We interpret them as generic section headers for
+      // now.
+    default:
+      printGenericSectionHeader(Sec);
+      break;
+    }
+    if (Sec.isReservedSectionType())
+      W.printHex("Flags", "Reserved", SectionType);
+    else
+      W.printEnum("Type", SectionType, makeArrayRef(SectionTypeFlagsNames));
+  }
+
+  if (opts::SectionRelocations)
+    report_fatal_error("Dumping section relocations is unimplemented");
+
+  if (opts::SectionSymbols)
+    report_fatal_error("Dumping symbols is unimplemented");
+
+  if (opts::SectionData)
+    report_fatal_error("Dumping section data is unimplemented");
+}
+
+namespace llvm {
+std::unique_ptr<ObjDumper>
+createXCOFFDumper(const object::XCOFFObjectFile &XObj, ScopedPrinter &Writer) {
+  return std::make_unique<XCOFFDumper>(XObj, Writer);
+}
+} // namespace llvm
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/llvm-readobj.cpp b/contrib/libs/llvm12/tools/llvm-readobj/llvm-readobj.cpp
new file mode 100644
index 0000000000..41cd4414d0
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/llvm-readobj.cpp
@@ -0,0 +1,780 @@
+//===- llvm-readobj.cpp - Dump contents of an Object File -----------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a tool similar to readelf, except it works on multiple object file
+// formats. The main purpose of this tool is to provide detailed output suitable
+// for FileCheck.
+//
+// Flags should be similar to readelf where supported, but the output format
+// does not need to be identical. The point is to not make users learn yet
+// another set of flags.
+//
+// Output should be specialized for each format where appropriate.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-readobj.h"
+#include "ObjDumper.h"
+#include "WindowsResourceDumper.h"
+#include "llvm/DebugInfo/CodeView/GlobalTypeTableBuilder.h"
+#include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h"
+#include "llvm/Object/Archive.h"
+#include "llvm/Object/COFFImportFile.h"
+#include "llvm/Object/ELFObjectFile.h"
+#include "llvm/Object/MachOUniversal.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Object/Wasm.h"
+#include "llvm/Object/WindowsResource.h"
+#include "llvm/Object/XCOFFObjectFile.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Errc.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/FormatVariadic.h"
+#include "llvm/Support/InitLLVM.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/ScopedPrinter.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/WithColor.h"
+
+using namespace llvm;
+using namespace llvm::object;
+
+namespace opts {
+  cl::list<std::string> InputFilenames(cl::Positional,
+    cl::desc("<input object files>"),
+    cl::ZeroOrMore);
+
+  // --all, -a
+  cl::opt<bool>
+      All("all",
+          cl::desc("Equivalent to setting: --file-headers, --program-headers, "
+                   "--section-headers, --symbols, --relocations, "
+                   "--dynamic-table, --notes, --version-info, --unwind, "
+                   "--section-groups and --elf-hash-histogram."));
+  cl::alias AllShort("a", cl::desc("Alias for --all"), cl::aliasopt(All));
+
+  // --dependent-libraries
+  cl::opt<bool>
+      DependentLibraries("dependent-libraries",
+                         cl::desc("Display the dependent libraries section"));
+
+  // --headers, -e
+  cl::opt<bool>
+      Headers("headers",
+          cl::desc("Equivalent to setting: --file-headers, --program-headers, "
+                   "--section-headers"));
+  cl::alias HeadersShort("e", cl::desc("Alias for --headers"),
+     cl::aliasopt(Headers));
+
+  // --wide, -W
+  cl::opt<bool>
+      WideOutput("wide", cl::desc("Ignored for compatibility with GNU readelf"),
+                 cl::Hidden);
+  cl::alias WideOutputShort("W",
+    cl::desc("Alias for --wide"),
+    cl::aliasopt(WideOutput));
+
+  // --file-headers, --file-header, -h
+  cl::opt<bool> FileHeaders("file-headers",
+    cl::desc("Display file headers "));
+  cl::alias FileHeadersShort("h", cl::desc("Alias for --file-headers"),
+                             cl::aliasopt(FileHeaders), cl::NotHidden);
+  cl::alias FileHeadersSingular("file-header",
+                                cl::desc("Alias for --file-headers"),
+                                cl::aliasopt(FileHeaders));
+
+  // --section-headers, --sections, -S
+  // Also -s in llvm-readobj mode.
+  cl::opt<bool> SectionHeaders("section-headers",
+                               cl::desc("Display all section headers."));
+  cl::alias SectionsShortUpper("S", cl::desc("Alias for --section-headers"),
+                               cl::aliasopt(SectionHeaders), cl::NotHidden);
+  cl::alias SectionHeadersAlias("sections",
+                                cl::desc("Alias for --section-headers"),
+                                cl::aliasopt(SectionHeaders), cl::NotHidden);
+
+  // --section-relocations
+  // Also --sr in llvm-readobj mode.
+  cl::opt<bool> SectionRelocations("section-relocations",
+    cl::desc("Display relocations for each section shown."));
+
+  // --section-symbols
+  // Also --st in llvm-readobj mode.
+  cl::opt<bool> SectionSymbols("section-symbols",
+    cl::desc("Display symbols for each section shown."));
+
+  // --section-data
+  // Also --sd in llvm-readobj mode.
+  cl::opt<bool> SectionData("section-data",
+    cl::desc("Display section data for each section shown."));
+
+  // --section-mapping
+  cl::opt<cl::boolOrDefault>
+      SectionMapping("section-mapping",
+                     cl::desc("Display the section to segment mapping."));
+
+  // --relocations, --relocs, -r
+  cl::opt<bool> Relocations("relocations",
+    cl::desc("Display the relocation entries in the file"));
+  cl::alias RelocationsShort("r", cl::desc("Alias for --relocations"),
+                             cl::aliasopt(Relocations), cl::NotHidden);
+  cl::alias RelocationsGNU("relocs", cl::desc("Alias for --relocations"),
+                           cl::aliasopt(Relocations));
+
+  // --notes, -n
+  cl::opt<bool> Notes("notes", cl::desc("Display the ELF notes in the file"));
+  cl::alias NotesShort("n", cl::desc("Alias for --notes"), cl::aliasopt(Notes));
+
+  // --dyn-relocations
+  cl::opt<bool> DynRelocs("dyn-relocations",
+    cl::desc("Display the dynamic relocation entries in the file"));
+
+  // --section-details
+  // Also -t in llvm-readelf mode.
+  cl::opt<bool> SectionDetails("section-details",
+                               cl::desc("Display the section details"));
+
+  // --symbols
+  // Also -s in llvm-readelf mode, or -t in llvm-readobj mode.
+  cl::opt<bool>
+      Symbols("symbols",
+              cl::desc("Display the symbol table. Also display the dynamic "
+                       "symbol table when using GNU output style for ELF"));
+  cl::alias SymbolsGNU("syms", cl::desc("Alias for --symbols"),
+                       cl::aliasopt(Symbols));
+
+  // --dyn-symbols, --dyn-syms
+  // Also --dt in llvm-readobj mode.
+  cl::opt<bool> DynamicSymbols("dyn-symbols",
+    cl::desc("Display the dynamic symbol table"));
+  cl::alias DynSymsGNU("dyn-syms", cl::desc("Alias for --dyn-symbols"),
+                       cl::aliasopt(DynamicSymbols));
+
+  // --hash-symbols
+  cl::opt<bool> HashSymbols(
+      "hash-symbols",
+      cl::desc("Display the dynamic symbols derived from the hash section"));
+
+  // --unwind, -u
+  cl::opt<bool> UnwindInfo("unwind",
+    cl::desc("Display unwind information"));
+  cl::alias UnwindInfoShort("u",
+    cl::desc("Alias for --unwind"),
+    cl::aliasopt(UnwindInfo));
+
+  // --dynamic-table, --dynamic, -d
+  cl::opt<bool> DynamicTable("dynamic-table",
+    cl::desc("Display the ELF .dynamic section table"));
+  cl::alias DynamicTableShort("d", cl::desc("Alias for --dynamic-table"),
+                              cl::aliasopt(DynamicTable), cl::NotHidden);
+  cl::alias DynamicTableAlias("dynamic", cl::desc("Alias for --dynamic-table"),
+                              cl::aliasopt(DynamicTable));
+
+  // --needed-libs
+  cl::opt<bool> NeededLibraries("needed-libs",
+    cl::desc("Display the needed libraries"));
+
+  // --program-headers, --segments, -l
+  cl::opt<bool> ProgramHeaders("program-headers",
+    cl::desc("Display ELF program headers"));
+  cl::alias ProgramHeadersShort("l", cl::desc("Alias for --program-headers"),
+                                cl::aliasopt(ProgramHeaders), cl::NotHidden);
+  cl::alias SegmentsAlias("segments", cl::desc("Alias for --program-headers"),
+                          cl::aliasopt(ProgramHeaders));
+
+  // --string-dump, -p
+  cl::list<std::string> StringDump(
+      "string-dump", cl::value_desc("number|name"),
+      cl::desc("Display the specified section(s) as a list of strings"),
+      cl::ZeroOrMore);
+  cl::alias StringDumpShort("p", cl::desc("Alias for --string-dump"),
+                            cl::aliasopt(StringDump), cl::Prefix);
+
+  // --hex-dump, -x
+  cl::list<std::string>
+      HexDump("hex-dump", cl::value_desc("number|name"),
+              cl::desc("Display the specified section(s) as hexadecimal bytes"),
+              cl::ZeroOrMore);
+  cl::alias HexDumpShort("x", cl::desc("Alias for --hex-dump"),
+                         cl::aliasopt(HexDump), cl::Prefix);
+
+  // --demangle, -C
+  cl::opt<bool> Demangle("demangle",
+                         cl::desc("Demangle symbol names in output"));
+  cl::alias DemangleShort("C", cl::desc("Alias for --demangle"),
+                          cl::aliasopt(Demangle), cl::NotHidden);
+
+  // --hash-table
+  cl::opt<bool> HashTable("hash-table",
+    cl::desc("Display ELF hash table"));
+
+  // --gnu-hash-table
+  cl::opt<bool> GnuHashTable("gnu-hash-table",
+    cl::desc("Display ELF .gnu.hash section"));
+
+  // --expand-relocs
+  cl::opt<bool> ExpandRelocs("expand-relocs",
+    cl::desc("Expand each shown relocation to multiple lines"));
+
+  // --raw-relr
+  cl::opt<bool> RawRelr("raw-relr",
+    cl::desc("Do not decode relocations in SHT_RELR section, display raw contents"));
+
+  // --codeview
+  cl::opt<bool> CodeView("codeview",
+                         cl::desc("Display CodeView debug information"));
+
+  // --codeview-merged-types
+  cl::opt<bool>
+      CodeViewMergedTypes("codeview-merged-types",
+                          cl::desc("Display the merged CodeView type stream"));
+
+  // --codeview-ghash
+  cl::opt<bool> CodeViewEnableGHash(
+      "codeview-ghash",
+      cl::desc(
+          "Enable global hashing for CodeView type stream de-duplication"));
+
+  // --codeview-subsection-bytes
+  cl::opt<bool> CodeViewSubsectionBytes(
+      "codeview-subsection-bytes",
+      cl::desc("Dump raw contents of codeview debug sections and records"));
+
+  // --arch-specific
+  cl::opt<bool> ArchSpecificInfo("arch-specific",
+                              cl::desc("Displays architecture-specific information, if there is any."));
+  cl::alias ArchSpecifcInfoShort("A", cl::desc("Alias for --arch-specific"),
+                                 cl::aliasopt(ArchSpecificInfo), cl::NotHidden);
+
+  // --coff-imports
+  cl::opt<bool>
+  COFFImports("coff-imports", cl::desc("Display the PE/COFF import table"));
+
+  // --coff-exports
+  cl::opt<bool>
+  COFFExports("coff-exports", cl::desc("Display the PE/COFF export table"));
+
+  // --coff-directives
+  cl::opt<bool>
+  COFFDirectives("coff-directives",
+                 cl::desc("Display the PE/COFF .drectve section"));
+
+  // --coff-basereloc
+  cl::opt<bool>
+  COFFBaseRelocs("coff-basereloc",
+                 cl::desc("Display the PE/COFF .reloc section"));
+
+  // --coff-debug-directory
+  cl::opt<bool>
+  COFFDebugDirectory("coff-debug-directory",
+                     cl::desc("Display the PE/COFF debug directory"));
+
+  // --coff-tls-directory
+  cl::opt<bool> COFFTLSDirectory("coff-tls-directory",
+                                 cl::desc("Display the PE/COFF TLS directory"));
+
+  // --coff-resources
+  cl::opt<bool> COFFResources("coff-resources",
+                              cl::desc("Display the PE/COFF .rsrc section"));
+
+  // --coff-load-config
+  cl::opt<bool>
+  COFFLoadConfig("coff-load-config",
+                 cl::desc("Display the PE/COFF load config"));
+
+  // --elf-linker-options
+  cl::opt<bool>
+  ELFLinkerOptions("elf-linker-options",
+                   cl::desc("Display the ELF .linker-options section"));
+
+  // --macho-data-in-code
+  cl::opt<bool>
+  MachODataInCode("macho-data-in-code",
+                  cl::desc("Display MachO Data in Code command"));
+
+  // --macho-indirect-symbols
+  cl::opt<bool>
+  MachOIndirectSymbols("macho-indirect-symbols",
+                  cl::desc("Display MachO indirect symbols"));
+
+  // --macho-linker-options
+  cl::opt<bool>
+  MachOLinkerOptions("macho-linker-options",
+                  cl::desc("Display MachO linker options"));
+
+  // --macho-segment
+  cl::opt<bool>
+  MachOSegment("macho-segment",
+                  cl::desc("Display MachO Segment command"));
+
+  // --macho-version-min
+  cl::opt<bool>
+  MachOVersionMin("macho-version-min",
+                  cl::desc("Display MachO version min command"));
+
+  // --macho-dysymtab
+  cl::opt<bool>
+  MachODysymtab("macho-dysymtab",
+                  cl::desc("Display MachO Dysymtab command"));
+
+  // --stackmap
+  cl::opt<bool>
+  PrintStackMap("stackmap",
+                cl::desc("Display contents of stackmap section"));
+
+  // --stack-sizes
+  cl::opt<bool>
+      PrintStackSizes("stack-sizes",
+                      cl::desc("Display contents of all stack sizes sections"));
+
+  // --version-info, -V
+  cl::opt<bool>
+      VersionInfo("version-info",
+                  cl::desc("Display ELF version sections (if present)"));
+  cl::alias VersionInfoShort("V", cl::desc("Alias for -version-info"),
+                             cl::aliasopt(VersionInfo));
+
+  // --elf-section-groups, --section-groups, -g
+  cl::opt<bool> SectionGroups("elf-section-groups",
+                              cl::desc("Display ELF section group contents"));
+  cl::alias SectionGroupsAlias("section-groups",
+                               cl::desc("Alias for -elf-sections-groups"),
+                               cl::aliasopt(SectionGroups));
+  cl::alias SectionGroupsShort("g", cl::desc("Alias for -elf-sections-groups"),
+                               cl::aliasopt(SectionGroups));
+
+  // --elf-hash-histogram, --histogram, -I
+  cl::opt<bool> HashHistogram(
+      "elf-hash-histogram",
+      cl::desc("Display bucket list histogram for hash sections"));
+  cl::alias HashHistogramShort("I", cl::desc("Alias for -elf-hash-histogram"),
+                               cl::aliasopt(HashHistogram));
+  cl::alias HistogramAlias("histogram",
+                           cl::desc("Alias for --elf-hash-histogram"),
+                           cl::aliasopt(HashHistogram));
+
+  // --cg-profile
+  cl::opt<bool> CGProfile("cg-profile",
+                          cl::desc("Display callgraph profile section"));
+  cl::alias ELFCGProfile("elf-cg-profile", cl::desc("Alias for --cg-profile"),
+                         cl::aliasopt(CGProfile));
+
+  // -addrsig
+  cl::opt<bool> Addrsig("addrsig",
+                        cl::desc("Display address-significance table"));
+
+  // -elf-output-style
+  cl::opt<OutputStyleTy>
+      Output("elf-output-style", cl::desc("Specify ELF dump style"),
+             cl::values(clEnumVal(LLVM, "LLVM default style"),
+                        clEnumVal(GNU, "GNU readelf style")),
+             cl::init(LLVM));
+
+  cl::extrahelp
+      HelpResponse("\nPass @FILE as argument to read options from FILE.\n");
+} // namespace opts
+
+static StringRef ToolName;
+
+namespace llvm {
+
+LLVM_ATTRIBUTE_NORETURN static void error(Twine Msg) {
+  // Flush the standard output to print the error at a
+  // proper place.
+  fouts().flush();
+  WithColor::error(errs(), ToolName) << Msg << "\n";
+  exit(1);
+}
+
+LLVM_ATTRIBUTE_NORETURN void reportError(Error Err, StringRef Input) {
+  assert(Err);
+  if (Input == "-")
+    Input = "<stdin>";
+  handleAllErrors(createFileError(Input, std::move(Err)),
+                  [&](const ErrorInfoBase &EI) { error(EI.message()); });
+  llvm_unreachable("error() call should never return");
+}
+
+void reportWarning(Error Err, StringRef Input) {
+  assert(Err);
+  if (Input == "-")
+    Input = "<stdin>";
+
+  // Flush the standard output to print the warning at a
+  // proper place.
+  fouts().flush();
+  handleAllErrors(
+      createFileError(Input, std::move(Err)), [&](const ErrorInfoBase &EI) {
+        WithColor::warning(errs(), ToolName) << EI.message() << "\n";
+      });
+}
+
+} // namespace llvm
+
+namespace {
+struct ReadObjTypeTableBuilder {
+  ReadObjTypeTableBuilder()
+      : Allocator(), IDTable(Allocator), TypeTable(Allocator),
+        GlobalIDTable(Allocator), GlobalTypeTable(Allocator) {}
+
+  llvm::BumpPtrAllocator Allocator;
+  llvm::codeview::MergingTypeTableBuilder IDTable;
+  llvm::codeview::MergingTypeTableBuilder TypeTable;
+  llvm::codeview::GlobalTypeTableBuilder GlobalIDTable;
+  llvm::codeview::GlobalTypeTableBuilder GlobalTypeTable;
+  std::vector<OwningBinary<Binary>> Binaries;
+};
+} // namespace
+static ReadObjTypeTableBuilder CVTypes;
+
+/// Creates an format-specific object file dumper.
+static Expected<std::unique_ptr<ObjDumper>>
+createDumper(const ObjectFile &Obj, ScopedPrinter &Writer) {
+  if (const COFFObjectFile *COFFObj = dyn_cast<COFFObjectFile>(&Obj))
+    return createCOFFDumper(*COFFObj, Writer);
+
+  if (const ELFObjectFileBase *ELFObj = dyn_cast<ELFObjectFileBase>(&Obj))
+    return createELFDumper(*ELFObj, Writer);
+
+  if (const MachOObjectFile *MachOObj = dyn_cast<MachOObjectFile>(&Obj))
+    return createMachODumper(*MachOObj, Writer);
+
+  if (const WasmObjectFile *WasmObj = dyn_cast<WasmObjectFile>(&Obj))
+    return createWasmDumper(*WasmObj, Writer);
+
+  if (const XCOFFObjectFile *XObj = dyn_cast<XCOFFObjectFile>(&Obj))
+    return createXCOFFDumper(*XObj, Writer);
+
+  return createStringError(errc::invalid_argument,
+                           "unsupported object file format");
+}
+
+/// Dumps the specified object file.
+static void dumpObject(ObjectFile &Obj, ScopedPrinter &Writer,
+                       const Archive *A = nullptr) {
+  std::string FileStr =
+      A ? Twine(A->getFileName() + "(" + Obj.getFileName() + ")").str()
+        : Obj.getFileName().str();
+
+  std::string ContentErrString;
+  if (Error ContentErr = Obj.initContent())
+    ContentErrString = "unable to continue dumping, the file is corrupt: " +
+                       toString(std::move(ContentErr));
+
+  ObjDumper *Dumper;
+  Expected<std::unique_ptr<ObjDumper>> DumperOrErr = createDumper(Obj, Writer);
+  if (!DumperOrErr)
+    reportError(DumperOrErr.takeError(), FileStr);
+  Dumper = (*DumperOrErr).get();
+
+  if (opts::Output == opts::LLVM || opts::InputFilenames.size() > 1 || A) {
+    Writer.startLine() << "\n";
+    Writer.printString("File", FileStr);
+  }
+  if (opts::Output == opts::LLVM) {
+    Writer.printString("Format", Obj.getFileFormatName());
+    Writer.printString("Arch", Triple::getArchTypeName(Obj.getArch()));
+    Writer.printString(
+        "AddressSize",
+        std::string(formatv("{0}bit", 8 * Obj.getBytesInAddress())));
+    Dumper->printLoadName();
+  }
+
+  if (opts::FileHeaders)
+    Dumper->printFileHeaders();
+
+  // This is only used for ELF currently. In some cases, when an object is
+  // corrupt (e.g. truncated), we can't dump anything except the file header.
+  if (!ContentErrString.empty())
+    reportError(createError(ContentErrString), FileStr);
+
+  if (opts::SectionDetails || opts::SectionHeaders) {
+    if (opts::Output == opts::GNU && opts::SectionDetails)
+      Dumper->printSectionDetails();
+    else
+      Dumper->printSectionHeaders();
+  }
+
+  if (opts::HashSymbols)
+    Dumper->printHashSymbols();
+  if (opts::ProgramHeaders || opts::SectionMapping == cl::BOU_TRUE)
+    Dumper->printProgramHeaders(opts::ProgramHeaders, opts::SectionMapping);
+  if (opts::DynamicTable)
+    Dumper->printDynamicTable();
+  if (opts::NeededLibraries)
+    Dumper->printNeededLibraries();
+  if (opts::Relocations)
+    Dumper->printRelocations();
+  if (opts::DynRelocs)
+    Dumper->printDynamicRelocations();
+  if (opts::UnwindInfo)
+    Dumper->printUnwindInfo();
+  if (opts::Symbols || opts::DynamicSymbols)
+    Dumper->printSymbols(opts::Symbols, opts::DynamicSymbols);
+  if (!opts::StringDump.empty())
+    Dumper->printSectionsAsString(Obj, opts::StringDump);
+  if (!opts::HexDump.empty())
+    Dumper->printSectionsAsHex(Obj, opts::HexDump);
+  if (opts::HashTable)
+    Dumper->printHashTable();
+  if (opts::GnuHashTable)
+    Dumper->printGnuHashTable();
+  if (opts::VersionInfo)
+    Dumper->printVersionInfo();
+  if (Obj.isELF()) {
+    if (opts::DependentLibraries)
+      Dumper->printDependentLibs();
+    if (opts::ELFLinkerOptions)
+      Dumper->printELFLinkerOptions();
+    if (opts::ArchSpecificInfo)
+      Dumper->printArchSpecificInfo();
+    if (opts::SectionGroups)
+      Dumper->printGroupSections();
+    if (opts::HashHistogram)
+      Dumper->printHashHistograms();
+    if (opts::CGProfile)
+      Dumper->printCGProfile();
+    if (opts::Addrsig)
+      Dumper->printAddrsig();
+    if (opts::Notes)
+      Dumper->printNotes();
+  }
+  if (Obj.isCOFF()) {
+    if (opts::COFFImports)
+      Dumper->printCOFFImports();
+    if (opts::COFFExports)
+      Dumper->printCOFFExports();
+    if (opts::COFFDirectives)
+      Dumper->printCOFFDirectives();
+    if (opts::COFFBaseRelocs)
+      Dumper->printCOFFBaseReloc();
+    if (opts::COFFDebugDirectory)
+      Dumper->printCOFFDebugDirectory();
+    if (opts::COFFTLSDirectory)
+      Dumper->printCOFFTLSDirectory();
+    if (opts::COFFResources)
+      Dumper->printCOFFResources();
+    if (opts::COFFLoadConfig)
+      Dumper->printCOFFLoadConfig();
+    if (opts::CGProfile)
+      Dumper->printCGProfile();
+    if (opts::Addrsig)
+      Dumper->printAddrsig();
+    if (opts::CodeView)
+      Dumper->printCodeViewDebugInfo();
+    if (opts::CodeViewMergedTypes)
+      Dumper->mergeCodeViewTypes(CVTypes.IDTable, CVTypes.TypeTable,
+                                 CVTypes.GlobalIDTable, CVTypes.GlobalTypeTable,
+                                 opts::CodeViewEnableGHash);
+  }
+  if (Obj.isMachO()) {
+    if (opts::MachODataInCode)
+      Dumper->printMachODataInCode();
+    if (opts::MachOIndirectSymbols)
+      Dumper->printMachOIndirectSymbols();
+    if (opts::MachOLinkerOptions)
+      Dumper->printMachOLinkerOptions();
+    if (opts::MachOSegment)
+      Dumper->printMachOSegment();
+    if (opts::MachOVersionMin)
+      Dumper->printMachOVersionMin();
+    if (opts::MachODysymtab)
+      Dumper->printMachODysymtab();
+  }
+  if (opts::PrintStackMap)
+    Dumper->printStackMap();
+  if (opts::PrintStackSizes)
+    Dumper->printStackSizes();
+}
+
+/// Dumps each object file in \a Arc;
+static void dumpArchive(const Archive *Arc, ScopedPrinter &Writer) {
+  Error Err = Error::success();
+  for (auto &Child : Arc->children(Err)) {
+    Expected<std::unique_ptr<Binary>> ChildOrErr = Child.getAsBinary();
+    if (!ChildOrErr) {
+      if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError()))
+        reportError(std::move(E), Arc->getFileName());
+      continue;
+    }
+
+    Binary *Bin = ChildOrErr->get();
+    if (ObjectFile *Obj = dyn_cast<ObjectFile>(Bin))
+      dumpObject(*Obj, Writer, Arc);
+    else if (COFFImportFile *Imp = dyn_cast<COFFImportFile>(Bin))
+      dumpCOFFImportFile(Imp, Writer);
+    else
+      reportWarning(createStringError(errc::invalid_argument,
+                                      Bin->getFileName() +
+                                          " has an unsupported file type"),
+                    Arc->getFileName());
+  }
+  if (Err)
+    reportError(std::move(Err), Arc->getFileName());
+}
+
+/// Dumps each object file in \a MachO Universal Binary;
+static void dumpMachOUniversalBinary(const MachOUniversalBinary *UBinary,
+                                     ScopedPrinter &Writer) {
+  for (const MachOUniversalBinary::ObjectForArch &Obj : UBinary->objects()) {
+    Expected<std::unique_ptr<MachOObjectFile>> ObjOrErr = Obj.getAsObjectFile();
+    if (ObjOrErr)
+      dumpObject(*ObjOrErr.get(), Writer);
+    else if (auto E = isNotObjectErrorInvalidFileType(ObjOrErr.takeError()))
+      reportError(ObjOrErr.takeError(), UBinary->getFileName());
+    else if (Expected<std::unique_ptr<Archive>> AOrErr = Obj.getAsArchive())
+      dumpArchive(&*AOrErr.get(), Writer);
+  }
+}
+
+/// Dumps \a WinRes, Windows Resource (.res) file;
+static void dumpWindowsResourceFile(WindowsResource *WinRes,
+                                    ScopedPrinter &Printer) {
+  WindowsRes::Dumper Dumper(WinRes, Printer);
+  if (auto Err = Dumper.printData())
+    reportError(std::move(Err), WinRes->getFileName());
+}
+
+
+/// Opens \a File and dumps it.
+static void dumpInput(StringRef File, ScopedPrinter &Writer) {
+  // Attempt to open the binary.
+  Expected<OwningBinary<Binary>> BinaryOrErr =
+      createBinary(File, /*Context=*/nullptr, /*InitContent=*/false);
+  if (!BinaryOrErr)
+    reportError(BinaryOrErr.takeError(), File);
+  Binary &Binary = *BinaryOrErr.get().getBinary();
+
+  if (Archive *Arc = dyn_cast<Archive>(&Binary))
+    dumpArchive(Arc, Writer);
+  else if (MachOUniversalBinary *UBinary =
+               dyn_cast<MachOUniversalBinary>(&Binary))
+    dumpMachOUniversalBinary(UBinary, Writer);
+  else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
+    dumpObject(*Obj, Writer);
+  else if (COFFImportFile *Import = dyn_cast<COFFImportFile>(&Binary))
+    dumpCOFFImportFile(Import, Writer);
+  else if (WindowsResource *WinRes = dyn_cast<WindowsResource>(&Binary))
+    dumpWindowsResourceFile(WinRes, Writer);
+  else
+    llvm_unreachable("unrecognized file type");
+
+  CVTypes.Binaries.push_back(std::move(*BinaryOrErr));
+}
+
+/// Registers aliases that should only be allowed by readobj.
+static void registerReadobjAliases() {
+  // -s has meant --sections for a very long time in llvm-readobj despite
+  // meaning --symbols in readelf.
+  static cl::alias SectionsShort("s", cl::desc("Alias for --section-headers"),
+                                 cl::aliasopt(opts::SectionHeaders),
+                                 cl::NotHidden);
+
+  // llvm-readelf reserves it for --section-details.
+  static cl::alias SymbolsShort("t", cl::desc("Alias for --symbols"),
+                                cl::aliasopt(opts::Symbols), cl::NotHidden);
+
+  // The following two-letter aliases are only provided for readobj, as readelf
+  // allows single-letter args to be grouped together.
+  static cl::alias SectionRelocationsShort(
+      "sr", cl::desc("Alias for --section-relocations"),
+      cl::aliasopt(opts::SectionRelocations));
+  static cl::alias SectionDataShort("sd", cl::desc("Alias for --section-data"),
+                                    cl::aliasopt(opts::SectionData));
+  static cl::alias SectionSymbolsShort("st",
+                                       cl::desc("Alias for --section-symbols"),
+                                       cl::aliasopt(opts::SectionSymbols));
+  static cl::alias DynamicSymbolsShort("dt",
+                                       cl::desc("Alias for --dyn-symbols"),
+                                       cl::aliasopt(opts::DynamicSymbols));
+}
+
+/// Registers aliases that should only be allowed by readelf.
+static void registerReadelfAliases() {
+  // -s is here because for readobj it means --sections.
+  static cl::alias SymbolsShort("s", cl::desc("Alias for --symbols"),
+                                cl::aliasopt(opts::Symbols), cl::NotHidden,
+                                cl::Grouping);
+
+  // -t is here because for readobj it is an alias for --symbols.
+  static cl::alias SectionDetailsShort(
+      "t", cl::desc("Alias for --section-details"),
+      cl::aliasopt(opts::SectionDetails), cl::NotHidden);
+
+  // Allow all single letter flags to be grouped together.
+  for (auto &OptEntry : cl::getRegisteredOptions()) {
+    StringRef ArgName = OptEntry.getKey();
+    cl::Option *Option = OptEntry.getValue();
+    if (ArgName.size() == 1)
+      apply(Option, cl::Grouping);
+  }
+}
+
+int main(int argc, const char *argv[]) {
+  InitLLVM X(argc, argv);
+  ToolName = argv[0];
+
+  // Register the target printer for --version.
+  cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
+
+  if (sys::path::stem(argv[0]).contains("readelf")) {
+    opts::Output = opts::GNU;
+    registerReadelfAliases();
+  } else {
+    registerReadobjAliases();
+  }
+
+  cl::ParseCommandLineOptions(argc, argv, "LLVM Object Reader\n");
+
+  // Default to print error if no filename is specified.
+  if (opts::InputFilenames.empty()) {
+    error("no input files specified");
+  }
+
+  if (opts::All) {
+    opts::FileHeaders = true;
+    opts::ProgramHeaders = true;
+    opts::SectionHeaders = true;
+    opts::Symbols = true;
+    opts::Relocations = true;
+    opts::DynamicTable = true;
+    opts::Notes = true;
+    opts::VersionInfo = true;
+    opts::UnwindInfo = true;
+    opts::SectionGroups = true;
+    opts::HashHistogram = true;
+    if (opts::Output == opts::LLVM) {
+      opts::Addrsig = true;
+      opts::PrintStackSizes = true;
+    }
+  }
+
+  if (opts::Headers) {
+    opts::FileHeaders = true;
+    opts::ProgramHeaders = true;
+    opts::SectionHeaders = true;
+  }
+
+  ScopedPrinter Writer(fouts());
+  for (const std::string &I : opts::InputFilenames)
+    dumpInput(I, Writer);
+
+  if (opts::CodeViewMergedTypes) {
+    if (opts::CodeViewEnableGHash)
+      dumpCodeViewMergedTypes(Writer, CVTypes.GlobalIDTable.records(),
+                              CVTypes.GlobalTypeTable.records());
+    else
+      dumpCodeViewMergedTypes(Writer, CVTypes.IDTable.records(),
+                              CVTypes.TypeTable.records());
+  }
+
+  return 0;
+}
diff --git a/contrib/libs/llvm12/tools/llvm-readobj/llvm-readobj.h b/contrib/libs/llvm12/tools/llvm-readobj/llvm-readobj.h
new file mode 100644
index 0000000000..d9813f5dea
--- /dev/null
+++ b/contrib/libs/llvm12/tools/llvm-readobj/llvm-readobj.h
@@ -0,0 +1,52 @@
+//===-- llvm-readobj.h ----------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_READOBJ_LLVM_READOBJ_H
+#define LLVM_TOOLS_LLVM_READOBJ_LLVM_READOBJ_H
+
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/ErrorOr.h"
+#include "llvm/Support/Error.h"
+#include <string>
+
+namespace llvm {
+  namespace object {
+    class RelocationRef;
+  }
+
+  // Various helper functions.
+  LLVM_ATTRIBUTE_NORETURN void reportError(Error Err, StringRef Input); 
+  void reportWarning(Error Err, StringRef Input);
+
+  template <class T> T unwrapOrError(StringRef Input, Expected<T> EO) {
+    if (EO)
+      return *EO;
+    reportError(EO.takeError(), Input);
+  }
+} // namespace llvm
+
+namespace opts {
+  extern llvm::cl::opt<bool> SectionRelocations;
+  extern llvm::cl::opt<bool> SectionSymbols;
+  extern llvm::cl::opt<bool> SectionData;
+  extern llvm::cl::opt<bool> ExpandRelocs;
+  extern llvm::cl::opt<bool> RawRelr;
+  extern llvm::cl::opt<bool> CodeViewSubsectionBytes;
+  extern llvm::cl::opt<bool> Demangle;
+  enum OutputStyleTy { LLVM, GNU };
+  extern llvm::cl::opt<OutputStyleTy> Output;
+} // namespace opts
+
+#define LLVM_READOBJ_ENUM_ENT(ns, enum) \
+  { #enum, ns::enum }
+
+#define LLVM_READOBJ_ENUM_CLASS_ENT(enum_class, enum) \
+  { #enum, std::underlying_type<enum_class>::type(enum_class::enum) }
+
+#endif