Restoring authorship annotation for <[email protected]>. Commit 1 of 2.

1 files changed, 625 insertions, 625 deletions

diff --git a/contrib/libs/llvm12/lib/Object/COFFImportFile.cpp b/contrib/libs/llvm12/lib/Object/COFFImportFile.cpp
index 69bbf70b43a..1244cabe75a 100644
--- a/contrib/libs/llvm12/lib/Object/COFFImportFile.cpp
+++ b/contrib/libs/llvm12/lib/Object/COFFImportFile.cpp
@@ -1,625 +1,625 @@
-//===- COFFImportFile.cpp - COFF short import file implementation ---------===//
-//
-// 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 defines the writeImportLibrary function.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Object/COFFImportFile.h"
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/Object/Archive.h"
-#include "llvm/Object/ArchiveWriter.h"
-#include "llvm/Object/COFF.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/Path.h"
-
-#include <cstdint>
-#include <string>
-#include <vector>
-
-using namespace llvm::COFF;
-using namespace llvm::object;
-using namespace llvm;
-
-namespace llvm {
-namespace object {
-
-static bool is32bit(MachineTypes Machine) {
-  switch (Machine) {
-  default:
-    llvm_unreachable("unsupported machine");
-  case IMAGE_FILE_MACHINE_ARM64:
-  case IMAGE_FILE_MACHINE_AMD64:
-    return false;
-  case IMAGE_FILE_MACHINE_ARMNT:
-  case IMAGE_FILE_MACHINE_I386:
-    return true;
-  }
-}
-
-static uint16_t getImgRelRelocation(MachineTypes Machine) {
-  switch (Machine) {
-  default:
-    llvm_unreachable("unsupported machine");
-  case IMAGE_FILE_MACHINE_AMD64:
-    return IMAGE_REL_AMD64_ADDR32NB;
-  case IMAGE_FILE_MACHINE_ARMNT:
-    return IMAGE_REL_ARM_ADDR32NB;
-  case IMAGE_FILE_MACHINE_ARM64:
-    return IMAGE_REL_ARM64_ADDR32NB;
-  case IMAGE_FILE_MACHINE_I386:
-    return IMAGE_REL_I386_DIR32NB;
-  }
-}
-
-template <class T> static void append(std::vector<uint8_t> &B, const T &Data) {
-  size_t S = B.size();
-  B.resize(S + sizeof(T));
-  memcpy(&B[S], &Data, sizeof(T));
-}
-
-static void writeStringTable(std::vector<uint8_t> &B,
-                             ArrayRef<const std::string> Strings) {
-  // The COFF string table consists of a 4-byte value which is the size of the
-  // table, including the length field itself.  This value is followed by the
-  // string content itself, which is an array of null-terminated C-style
-  // strings.  The termination is important as they are referenced to by offset
-  // by the symbol entity in the file format.
-
-  size_t Pos = B.size();
-  size_t Offset = B.size();
-
-  // Skip over the length field, we will fill it in later as we will have
-  // computed the length while emitting the string content itself.
-  Pos += sizeof(uint32_t);
-
-  for (const auto &S : Strings) {
-    B.resize(Pos + S.length() + 1);
-    strcpy(reinterpret_cast<char *>(&B[Pos]), S.c_str());
-    Pos += S.length() + 1;
-  }
-
-  // Backfill the length of the table now that it has been computed.
-  support::ulittle32_t Length(B.size() - Offset);
-  support::endian::write32le(&B[Offset], Length);
-}
-
-static ImportNameType getNameType(StringRef Sym, StringRef ExtName,
-                                  MachineTypes Machine, bool MinGW) {
-  // A decorated stdcall function in MSVC is exported with the
-  // type IMPORT_NAME, and the exported function name includes the
-  // the leading underscore. In MinGW on the other hand, a decorated
-  // stdcall function still omits the underscore (IMPORT_NAME_NOPREFIX).
-  // See the comment in isDecorated in COFFModuleDefinition.cpp for more
-  // details.
-  if (ExtName.startswith("_") && ExtName.contains('@') && !MinGW)
-    return IMPORT_NAME;
-  if (Sym != ExtName)
-    return IMPORT_NAME_UNDECORATE;
-  if (Machine == IMAGE_FILE_MACHINE_I386 && Sym.startswith("_"))
-    return IMPORT_NAME_NOPREFIX;
-  return IMPORT_NAME;
-}
-
-static Expected<std::string> replace(StringRef S, StringRef From,
-                                     StringRef To) {
-  size_t Pos = S.find(From);
-
-  // From and To may be mangled, but substrings in S may not.
-  if (Pos == StringRef::npos && From.startswith("_") && To.startswith("_")) {
-    From = From.substr(1);
-    To = To.substr(1);
-    Pos = S.find(From);
-  }
-
-  if (Pos == StringRef::npos) {
-    return make_error<StringError>(
-      StringRef(Twine(S + ": replacing '" + From +
-        "' with '" + To + "' failed").str()), object_error::parse_failed);
-  }
-
-  return (Twine(S.substr(0, Pos)) + To + S.substr(Pos + From.size())).str();
-}
-
-static const std::string NullImportDescriptorSymbolName =
-    "__NULL_IMPORT_DESCRIPTOR";
-
-namespace {
-// This class constructs various small object files necessary to support linking
-// symbols imported from a DLL.  The contents are pretty strictly defined and
-// nearly entirely static.  The details of the structures files are defined in
-// WINNT.h and the PE/COFF specification.
-class ObjectFactory {
-  using u16 = support::ulittle16_t;
-  using u32 = support::ulittle32_t;
-  MachineTypes Machine;
-  BumpPtrAllocator Alloc;
-  StringRef ImportName;
-  StringRef Library;
-  std::string ImportDescriptorSymbolName;
-  std::string NullThunkSymbolName;
-
-public:
-  ObjectFactory(StringRef S, MachineTypes M)
-      : Machine(M), ImportName(S), Library(S.drop_back(4)),
-        ImportDescriptorSymbolName(("__IMPORT_DESCRIPTOR_" + Library).str()),
-        NullThunkSymbolName(("\x7f" + Library + "_NULL_THUNK_DATA").str()) {}
-
-  // Creates an Import Descriptor.  This is a small object file which contains a
-  // reference to the terminators and contains the library name (entry) for the
-  // import name table.  It will force the linker to construct the necessary
-  // structure to import symbols from the DLL.
-  NewArchiveMember createImportDescriptor(std::vector<uint8_t> &Buffer);
-
-  // Creates a NULL import descriptor.  This is a small object file whcih
-  // contains a NULL import descriptor.  It is used to terminate the imports
-  // from a specific DLL.
-  NewArchiveMember createNullImportDescriptor(std::vector<uint8_t> &Buffer);
-
-  // Create a NULL Thunk Entry.  This is a small object file which contains a
-  // NULL Import Address Table entry and a NULL Import Lookup Table Entry.  It
-  // is used to terminate the IAT and ILT.
-  NewArchiveMember createNullThunk(std::vector<uint8_t> &Buffer);
-
-  // Create a short import file which is described in PE/COFF spec 7. Import
-  // Library Format.
-  NewArchiveMember createShortImport(StringRef Sym, uint16_t Ordinal,
-                                     ImportType Type, ImportNameType NameType);
-
-  // Create a weak external file which is described in PE/COFF Aux Format 3.
-  NewArchiveMember createWeakExternal(StringRef Sym, StringRef Weak, bool Imp);
-};
-} // namespace
-
-NewArchiveMember
-ObjectFactory::createImportDescriptor(std::vector<uint8_t> &Buffer) {
-  const uint32_t NumberOfSections = 2;
-  const uint32_t NumberOfSymbols = 7;
-  const uint32_t NumberOfRelocations = 3;
-
-  // COFF Header
-  coff_file_header Header{
-      u16(Machine),
-      u16(NumberOfSections),
-      u32(0),
-      u32(sizeof(Header) + (NumberOfSections * sizeof(coff_section)) +
-          // .idata$2
-          sizeof(coff_import_directory_table_entry) +
-          NumberOfRelocations * sizeof(coff_relocation) +
-          // .idata$4
-          (ImportName.size() + 1)),
-      u32(NumberOfSymbols),
-      u16(0),
-      u16(is32bit(Machine) ? IMAGE_FILE_32BIT_MACHINE : C_Invalid),
-  };
-  append(Buffer, Header);
-
-  // Section Header Table
-  const coff_section SectionTable[NumberOfSections] = {
-      {{'.', 'i', 'd', 'a', 't', 'a', '$', '2'},
-       u32(0),
-       u32(0),
-       u32(sizeof(coff_import_directory_table_entry)),
-       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section)),
-       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section) +
-           sizeof(coff_import_directory_table_entry)),
-       u32(0),
-       u16(NumberOfRelocations),
-       u16(0),
-       u32(IMAGE_SCN_ALIGN_4BYTES | IMAGE_SCN_CNT_INITIALIZED_DATA |
-           IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE)},
-      {{'.', 'i', 'd', 'a', 't', 'a', '$', '6'},
-       u32(0),
-       u32(0),
-       u32(ImportName.size() + 1),
-       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section) +
-           sizeof(coff_import_directory_table_entry) +
-           NumberOfRelocations * sizeof(coff_relocation)),
-       u32(0),
-       u32(0),
-       u16(0),
-       u16(0),
-       u32(IMAGE_SCN_ALIGN_2BYTES | IMAGE_SCN_CNT_INITIALIZED_DATA |
-           IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE)},
-  };
-  append(Buffer, SectionTable);
-
-  // .idata$2
-  const coff_import_directory_table_entry ImportDescriptor{
-      u32(0), u32(0), u32(0), u32(0), u32(0),
-  };
-  append(Buffer, ImportDescriptor);
-
-  const coff_relocation RelocationTable[NumberOfRelocations] = {
-      {u32(offsetof(coff_import_directory_table_entry, NameRVA)), u32(2),
-       u16(getImgRelRelocation(Machine))},
-      {u32(offsetof(coff_import_directory_table_entry, ImportLookupTableRVA)),
-       u32(3), u16(getImgRelRelocation(Machine))},
-      {u32(offsetof(coff_import_directory_table_entry, ImportAddressTableRVA)),
-       u32(4), u16(getImgRelRelocation(Machine))},
-  };
-  append(Buffer, RelocationTable);
-
-  // .idata$6
-  auto S = Buffer.size();
-  Buffer.resize(S + ImportName.size() + 1);
-  memcpy(&Buffer[S], ImportName.data(), ImportName.size());
-  Buffer[S + ImportName.size()] = '\0';
-
-  // Symbol Table
-  coff_symbol16 SymbolTable[NumberOfSymbols] = {
-      {{{0, 0, 0, 0, 0, 0, 0, 0}},
-       u32(0),
-       u16(1),
-       u16(0),
-       IMAGE_SYM_CLASS_EXTERNAL,
-       0},
-      {{{'.', 'i', 'd', 'a', 't', 'a', '$', '2'}},
-       u32(0),
-       u16(1),
-       u16(0),
-       IMAGE_SYM_CLASS_SECTION,
-       0},
-      {{{'.', 'i', 'd', 'a', 't', 'a', '$', '6'}},
-       u32(0),
-       u16(2),
-       u16(0),
-       IMAGE_SYM_CLASS_STATIC,
-       0},
-      {{{'.', 'i', 'd', 'a', 't', 'a', '$', '4'}},
-       u32(0),
-       u16(0),
-       u16(0),
-       IMAGE_SYM_CLASS_SECTION,
-       0},
-      {{{'.', 'i', 'd', 'a', 't', 'a', '$', '5'}},
-       u32(0),
-       u16(0),
-       u16(0),
-       IMAGE_SYM_CLASS_SECTION,
-       0},
-      {{{0, 0, 0, 0, 0, 0, 0, 0}},
-       u32(0),
-       u16(0),
-       u16(0),
-       IMAGE_SYM_CLASS_EXTERNAL,
-       0},
-      {{{0, 0, 0, 0, 0, 0, 0, 0}},
-       u32(0),
-       u16(0),
-       u16(0),
-       IMAGE_SYM_CLASS_EXTERNAL,
-       0},
-  };
-  // TODO: Name.Offset.Offset here and in the all similar places below
-  // suggests a names refactoring. Maybe StringTableOffset.Value?
-  SymbolTable[0].Name.Offset.Offset =
-      sizeof(uint32_t);
-  SymbolTable[5].Name.Offset.Offset =
-      sizeof(uint32_t) + ImportDescriptorSymbolName.length() + 1;
-  SymbolTable[6].Name.Offset.Offset =
-      sizeof(uint32_t) + ImportDescriptorSymbolName.length() + 1 +
-      NullImportDescriptorSymbolName.length() + 1;
-  append(Buffer, SymbolTable);
-
-  // String Table
-  writeStringTable(Buffer,
-                   {ImportDescriptorSymbolName, NullImportDescriptorSymbolName,
-                    NullThunkSymbolName});
-
-  StringRef F{reinterpret_cast<const char *>(Buffer.data()), Buffer.size()};
-  return {MemoryBufferRef(F, ImportName)};
-}
-
-NewArchiveMember
-ObjectFactory::createNullImportDescriptor(std::vector<uint8_t> &Buffer) {
-  const uint32_t NumberOfSections = 1;
-  const uint32_t NumberOfSymbols = 1;
-
-  // COFF Header
-  coff_file_header Header{
-      u16(Machine),
-      u16(NumberOfSections),
-      u32(0),
-      u32(sizeof(Header) + (NumberOfSections * sizeof(coff_section)) +
-          // .idata$3
-          sizeof(coff_import_directory_table_entry)),
-      u32(NumberOfSymbols),
-      u16(0),
-      u16(is32bit(Machine) ? IMAGE_FILE_32BIT_MACHINE : C_Invalid),
-  };
-  append(Buffer, Header);
-
-  // Section Header Table
-  const coff_section SectionTable[NumberOfSections] = {
-      {{'.', 'i', 'd', 'a', 't', 'a', '$', '3'},
-       u32(0),
-       u32(0),
-       u32(sizeof(coff_import_directory_table_entry)),
-       u32(sizeof(coff_file_header) +
-           (NumberOfSections * sizeof(coff_section))),
-       u32(0),
-       u32(0),
-       u16(0),
-       u16(0),
-       u32(IMAGE_SCN_ALIGN_4BYTES | IMAGE_SCN_CNT_INITIALIZED_DATA |
-           IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE)},
-  };
-  append(Buffer, SectionTable);
-
-  // .idata$3
-  const coff_import_directory_table_entry ImportDescriptor{
-      u32(0), u32(0), u32(0), u32(0), u32(0),
-  };
-  append(Buffer, ImportDescriptor);
-
-  // Symbol Table
-  coff_symbol16 SymbolTable[NumberOfSymbols] = {
-      {{{0, 0, 0, 0, 0, 0, 0, 0}},
-       u32(0),
-       u16(1),
-       u16(0),
-       IMAGE_SYM_CLASS_EXTERNAL,
-       0},
-  };
-  SymbolTable[0].Name.Offset.Offset = sizeof(uint32_t);
-  append(Buffer, SymbolTable);
-
-  // String Table
-  writeStringTable(Buffer, {NullImportDescriptorSymbolName});
-
-  StringRef F{reinterpret_cast<const char *>(Buffer.data()), Buffer.size()};
-  return {MemoryBufferRef(F, ImportName)};
-}
-
-NewArchiveMember ObjectFactory::createNullThunk(std::vector<uint8_t> &Buffer) {
-  const uint32_t NumberOfSections = 2;
-  const uint32_t NumberOfSymbols = 1;
-  uint32_t VASize = is32bit(Machine) ? 4 : 8;
-
-  // COFF Header
-  coff_file_header Header{
-      u16(Machine),
-      u16(NumberOfSections),
-      u32(0),
-      u32(sizeof(Header) + (NumberOfSections * sizeof(coff_section)) +
-          // .idata$5
-          VASize +
-          // .idata$4
-          VASize),
-      u32(NumberOfSymbols),
-      u16(0),
-      u16(is32bit(Machine) ? IMAGE_FILE_32BIT_MACHINE : C_Invalid),
-  };
-  append(Buffer, Header);
-
-  // Section Header Table
-  const coff_section SectionTable[NumberOfSections] = {
-      {{'.', 'i', 'd', 'a', 't', 'a', '$', '5'},
-       u32(0),
-       u32(0),
-       u32(VASize),
-       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section)),
-       u32(0),
-       u32(0),
-       u16(0),
-       u16(0),
-       u32((is32bit(Machine) ? IMAGE_SCN_ALIGN_4BYTES
-                             : IMAGE_SCN_ALIGN_8BYTES) |
-           IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ |
-           IMAGE_SCN_MEM_WRITE)},
-      {{'.', 'i', 'd', 'a', 't', 'a', '$', '4'},
-       u32(0),
-       u32(0),
-       u32(VASize),
-       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section) +
-           VASize),
-       u32(0),
-       u32(0),
-       u16(0),
-       u16(0),
-       u32((is32bit(Machine) ? IMAGE_SCN_ALIGN_4BYTES
-                             : IMAGE_SCN_ALIGN_8BYTES) |
-           IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ |
-           IMAGE_SCN_MEM_WRITE)},
-  };
-  append(Buffer, SectionTable);
-
-  // .idata$5, ILT
-  append(Buffer, u32(0));
-  if (!is32bit(Machine))
-    append(Buffer, u32(0));
-
-  // .idata$4, IAT
-  append(Buffer, u32(0));
-  if (!is32bit(Machine))
-    append(Buffer, u32(0));
-
-  // Symbol Table
-  coff_symbol16 SymbolTable[NumberOfSymbols] = {
-      {{{0, 0, 0, 0, 0, 0, 0, 0}},
-       u32(0),
-       u16(1),
-       u16(0),
-       IMAGE_SYM_CLASS_EXTERNAL,
-       0},
-  };
-  SymbolTable[0].Name.Offset.Offset = sizeof(uint32_t);
-  append(Buffer, SymbolTable);
-
-  // String Table
-  writeStringTable(Buffer, {NullThunkSymbolName});
-
-  StringRef F{reinterpret_cast<const char *>(Buffer.data()), Buffer.size()};
-  return {MemoryBufferRef{F, ImportName}};
-}
-
-NewArchiveMember ObjectFactory::createShortImport(StringRef Sym,
-                                                  uint16_t Ordinal,
-                                                  ImportType ImportType,
-                                                  ImportNameType NameType) {
-  size_t ImpSize = ImportName.size() + Sym.size() + 2; // +2 for NULs
-  size_t Size = sizeof(coff_import_header) + ImpSize;
-  char *Buf = Alloc.Allocate<char>(Size);
-  memset(Buf, 0, Size);
-  char *P = Buf;
-
-  // Write short import library.
-  auto *Imp = reinterpret_cast<coff_import_header *>(P);
-  P += sizeof(*Imp);
-  Imp->Sig2 = 0xFFFF;
-  Imp->Machine = Machine;
-  Imp->SizeOfData = ImpSize;
-  if (Ordinal > 0)
-    Imp->OrdinalHint = Ordinal;
-  Imp->TypeInfo = (NameType << 2) | ImportType;
-
-  // Write symbol name and DLL name.
-  memcpy(P, Sym.data(), Sym.size());
-  P += Sym.size() + 1;
-  memcpy(P, ImportName.data(), ImportName.size());
-
-  return {MemoryBufferRef(StringRef(Buf, Size), ImportName)};
-}
-
-NewArchiveMember ObjectFactory::createWeakExternal(StringRef Sym,
-                                                   StringRef Weak, bool Imp) {
-  std::vector<uint8_t> Buffer;
-  const uint32_t NumberOfSections = 1;
-  const uint32_t NumberOfSymbols = 5;
-
-  // COFF Header
-  coff_file_header Header{
-      u16(Machine),
-      u16(NumberOfSections),
-      u32(0),
-      u32(sizeof(Header) + (NumberOfSections * sizeof(coff_section))),
-      u32(NumberOfSymbols),
-      u16(0),
-      u16(0),
-  };
-  append(Buffer, Header);
-
-  // Section Header Table
-  const coff_section SectionTable[NumberOfSections] = {
-      {{'.', 'd', 'r', 'e', 'c', 't', 'v', 'e'},
-       u32(0),
-       u32(0),
-       u32(0),
-       u32(0),
-       u32(0),
-       u32(0),
-       u16(0),
-       u16(0),
-       u32(IMAGE_SCN_LNK_INFO | IMAGE_SCN_LNK_REMOVE)}};
-  append(Buffer, SectionTable);
-
-  // Symbol Table
-  coff_symbol16 SymbolTable[NumberOfSymbols] = {
-      {{{'@', 'c', 'o', 'm', 'p', '.', 'i', 'd'}},
-       u32(0),
-       u16(0xFFFF),
-       u16(0),
-       IMAGE_SYM_CLASS_STATIC,
-       0},
-      {{{'@', 'f', 'e', 'a', 't', '.', '0', '0'}},
-       u32(0),
-       u16(0xFFFF),
-       u16(0),
-       IMAGE_SYM_CLASS_STATIC,
-       0},
-      {{{0, 0, 0, 0, 0, 0, 0, 0}},
-       u32(0),
-       u16(0),
-       u16(0),
-       IMAGE_SYM_CLASS_EXTERNAL,
-       0},
-      {{{0, 0, 0, 0, 0, 0, 0, 0}},
-       u32(0),
-       u16(0),
-       u16(0),
-       IMAGE_SYM_CLASS_WEAK_EXTERNAL,
-       1},
-      {{{2, 0, 0, 0, IMAGE_WEAK_EXTERN_SEARCH_ALIAS, 0, 0, 0}},
-       u32(0),
-       u16(0),
-       u16(0),
-       IMAGE_SYM_CLASS_NULL,
-       0},
-  };
-  SymbolTable[2].Name.Offset.Offset = sizeof(uint32_t);
-
-  //__imp_ String Table
-  StringRef Prefix = Imp ? "__imp_" : "";
-  SymbolTable[3].Name.Offset.Offset =
-      sizeof(uint32_t) + Sym.size() + Prefix.size() + 1;
-  append(Buffer, SymbolTable);
-  writeStringTable(Buffer, {(Prefix + Sym).str(),
-                            (Prefix + Weak).str()});
-
-  // Copied here so we can still use writeStringTable
-  char *Buf = Alloc.Allocate<char>(Buffer.size());
-  memcpy(Buf, Buffer.data(), Buffer.size());
-  return {MemoryBufferRef(StringRef(Buf, Buffer.size()), ImportName)};
-}
-
-Error writeImportLibrary(StringRef ImportName, StringRef Path,
-                         ArrayRef<COFFShortExport> Exports,
-                         MachineTypes Machine, bool MinGW) {
-
-  std::vector<NewArchiveMember> Members;
-  ObjectFactory OF(llvm::sys::path::filename(ImportName), Machine);
-
-  std::vector<uint8_t> ImportDescriptor;
-  Members.push_back(OF.createImportDescriptor(ImportDescriptor));
-
-  std::vector<uint8_t> NullImportDescriptor;
-  Members.push_back(OF.createNullImportDescriptor(NullImportDescriptor));
-
-  std::vector<uint8_t> NullThunk;
-  Members.push_back(OF.createNullThunk(NullThunk));
-
-  for (COFFShortExport E : Exports) {
-    if (E.Private)
-      continue;
-
-    ImportType ImportType = IMPORT_CODE;
-    if (E.Data)
-      ImportType = IMPORT_DATA;
-    if (E.Constant)
-      ImportType = IMPORT_CONST;
-
-    StringRef SymbolName = E.SymbolName.empty() ? E.Name : E.SymbolName;
-    ImportNameType NameType = E.Noname
-                                  ? IMPORT_ORDINAL
-                                  : getNameType(SymbolName, E.Name,
-                                                Machine, MinGW);
-    Expected<std::string> Name = E.ExtName.empty()
-                                     ? std::string(SymbolName)
-                                     : replace(SymbolName, E.Name, E.ExtName);
-
-    if (!Name)
-      return Name.takeError();
-
-    if (!E.AliasTarget.empty() && *Name != E.AliasTarget) {
-      Members.push_back(OF.createWeakExternal(E.AliasTarget, *Name, false));
-      Members.push_back(OF.createWeakExternal(E.AliasTarget, *Name, true));
-      continue;
-    }
-
-    Members.push_back(
-        OF.createShortImport(*Name, E.Ordinal, ImportType, NameType));
-  }
-
-  return writeArchive(Path, Members, /*WriteSymtab*/ true,
-                      object::Archive::K_GNU,
-                      /*Deterministic*/ true, /*Thin*/ false);
-}
-
-} // namespace object
-} // namespace llvm
+//===- COFFImportFile.cpp - COFF short import file implementation ---------===// 
+// 
+// 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 defines the writeImportLibrary function. 
+// 
+//===----------------------------------------------------------------------===// 
+ 
+#include "llvm/Object/COFFImportFile.h" 
+#include "llvm/ADT/ArrayRef.h" 
+#include "llvm/Object/Archive.h" 
+#include "llvm/Object/ArchiveWriter.h" 
+#include "llvm/Object/COFF.h" 
+#include "llvm/Support/Error.h" 
+#include "llvm/Support/Path.h" 
+ 
+#include <cstdint> 
+#include <string> 
+#include <vector> 
+ 
+using namespace llvm::COFF; 
+using namespace llvm::object; 
+using namespace llvm; 
+ 
+namespace llvm { 
+namespace object { 
+ 
+static bool is32bit(MachineTypes Machine) { 
+  switch (Machine) { 
+  default: 
+    llvm_unreachable("unsupported machine"); 
+  case IMAGE_FILE_MACHINE_ARM64: 
+  case IMAGE_FILE_MACHINE_AMD64: 
+    return false; 
+  case IMAGE_FILE_MACHINE_ARMNT: 
+  case IMAGE_FILE_MACHINE_I386: 
+    return true; 
+  } 
+} 
+ 
+static uint16_t getImgRelRelocation(MachineTypes Machine) { 
+  switch (Machine) { 
+  default: 
+    llvm_unreachable("unsupported machine"); 
+  case IMAGE_FILE_MACHINE_AMD64: 
+    return IMAGE_REL_AMD64_ADDR32NB; 
+  case IMAGE_FILE_MACHINE_ARMNT: 
+    return IMAGE_REL_ARM_ADDR32NB; 
+  case IMAGE_FILE_MACHINE_ARM64: 
+    return IMAGE_REL_ARM64_ADDR32NB; 
+  case IMAGE_FILE_MACHINE_I386: 
+    return IMAGE_REL_I386_DIR32NB; 
+  } 
+} 
+ 
+template <class T> static void append(std::vector<uint8_t> &B, const T &Data) { 
+  size_t S = B.size(); 
+  B.resize(S + sizeof(T)); 
+  memcpy(&B[S], &Data, sizeof(T)); 
+} 
+ 
+static void writeStringTable(std::vector<uint8_t> &B, 
+                             ArrayRef<const std::string> Strings) { 
+  // The COFF string table consists of a 4-byte value which is the size of the 
+  // table, including the length field itself.  This value is followed by the 
+  // string content itself, which is an array of null-terminated C-style 
+  // strings.  The termination is important as they are referenced to by offset 
+  // by the symbol entity in the file format. 
+ 
+  size_t Pos = B.size(); 
+  size_t Offset = B.size(); 
+ 
+  // Skip over the length field, we will fill it in later as we will have 
+  // computed the length while emitting the string content itself. 
+  Pos += sizeof(uint32_t); 
+ 
+  for (const auto &S : Strings) { 
+    B.resize(Pos + S.length() + 1); 
+    strcpy(reinterpret_cast<char *>(&B[Pos]), S.c_str()); 
+    Pos += S.length() + 1; 
+  } 
+ 
+  // Backfill the length of the table now that it has been computed. 
+  support::ulittle32_t Length(B.size() - Offset); 
+  support::endian::write32le(&B[Offset], Length); 
+} 
+ 
+static ImportNameType getNameType(StringRef Sym, StringRef ExtName, 
+                                  MachineTypes Machine, bool MinGW) { 
+  // A decorated stdcall function in MSVC is exported with the 
+  // type IMPORT_NAME, and the exported function name includes the 
+  // the leading underscore. In MinGW on the other hand, a decorated 
+  // stdcall function still omits the underscore (IMPORT_NAME_NOPREFIX). 
+  // See the comment in isDecorated in COFFModuleDefinition.cpp for more 
+  // details. 
+  if (ExtName.startswith("_") && ExtName.contains('@') && !MinGW) 
+    return IMPORT_NAME; 
+  if (Sym != ExtName) 
+    return IMPORT_NAME_UNDECORATE; 
+  if (Machine == IMAGE_FILE_MACHINE_I386 && Sym.startswith("_")) 
+    return IMPORT_NAME_NOPREFIX; 
+  return IMPORT_NAME; 
+} 
+ 
+static Expected<std::string> replace(StringRef S, StringRef From, 
+                                     StringRef To) { 
+  size_t Pos = S.find(From); 
+ 
+  // From and To may be mangled, but substrings in S may not. 
+  if (Pos == StringRef::npos && From.startswith("_") && To.startswith("_")) { 
+    From = From.substr(1); 
+    To = To.substr(1); 
+    Pos = S.find(From); 
+  } 
+ 
+  if (Pos == StringRef::npos) { 
+    return make_error<StringError>( 
+      StringRef(Twine(S + ": replacing '" + From + 
+        "' with '" + To + "' failed").str()), object_error::parse_failed); 
+  } 
+ 
+  return (Twine(S.substr(0, Pos)) + To + S.substr(Pos + From.size())).str(); 
+} 
+ 
+static const std::string NullImportDescriptorSymbolName = 
+    "__NULL_IMPORT_DESCRIPTOR"; 
+ 
+namespace { 
+// This class constructs various small object files necessary to support linking 
+// symbols imported from a DLL.  The contents are pretty strictly defined and 
+// nearly entirely static.  The details of the structures files are defined in 
+// WINNT.h and the PE/COFF specification. 
+class ObjectFactory { 
+  using u16 = support::ulittle16_t; 
+  using u32 = support::ulittle32_t; 
+  MachineTypes Machine; 
+  BumpPtrAllocator Alloc; 
+  StringRef ImportName; 
+  StringRef Library; 
+  std::string ImportDescriptorSymbolName; 
+  std::string NullThunkSymbolName; 
+ 
+public: 
+  ObjectFactory(StringRef S, MachineTypes M) 
+      : Machine(M), ImportName(S), Library(S.drop_back(4)), 
+        ImportDescriptorSymbolName(("__IMPORT_DESCRIPTOR_" + Library).str()), 
+        NullThunkSymbolName(("\x7f" + Library + "_NULL_THUNK_DATA").str()) {} 
+ 
+  // Creates an Import Descriptor.  This is a small object file which contains a 
+  // reference to the terminators and contains the library name (entry) for the 
+  // import name table.  It will force the linker to construct the necessary 
+  // structure to import symbols from the DLL. 
+  NewArchiveMember createImportDescriptor(std::vector<uint8_t> &Buffer); 
+ 
+  // Creates a NULL import descriptor.  This is a small object file whcih 
+  // contains a NULL import descriptor.  It is used to terminate the imports 
+  // from a specific DLL. 
+  NewArchiveMember createNullImportDescriptor(std::vector<uint8_t> &Buffer); 
+ 
+  // Create a NULL Thunk Entry.  This is a small object file which contains a 
+  // NULL Import Address Table entry and a NULL Import Lookup Table Entry.  It 
+  // is used to terminate the IAT and ILT. 
+  NewArchiveMember createNullThunk(std::vector<uint8_t> &Buffer); 
+ 
+  // Create a short import file which is described in PE/COFF spec 7. Import 
+  // Library Format. 
+  NewArchiveMember createShortImport(StringRef Sym, uint16_t Ordinal, 
+                                     ImportType Type, ImportNameType NameType); 
+ 
+  // Create a weak external file which is described in PE/COFF Aux Format 3. 
+  NewArchiveMember createWeakExternal(StringRef Sym, StringRef Weak, bool Imp); 
+}; 
+} // namespace 
+ 
+NewArchiveMember 
+ObjectFactory::createImportDescriptor(std::vector<uint8_t> &Buffer) { 
+  const uint32_t NumberOfSections = 2; 
+  const uint32_t NumberOfSymbols = 7; 
+  const uint32_t NumberOfRelocations = 3; 
+ 
+  // COFF Header 
+  coff_file_header Header{ 
+      u16(Machine), 
+      u16(NumberOfSections), 
+      u32(0), 
+      u32(sizeof(Header) + (NumberOfSections * sizeof(coff_section)) + 
+          // .idata$2 
+          sizeof(coff_import_directory_table_entry) + 
+          NumberOfRelocations * sizeof(coff_relocation) + 
+          // .idata$4 
+          (ImportName.size() + 1)), 
+      u32(NumberOfSymbols), 
+      u16(0), 
+      u16(is32bit(Machine) ? IMAGE_FILE_32BIT_MACHINE : C_Invalid), 
+  }; 
+  append(Buffer, Header); 
+ 
+  // Section Header Table 
+  const coff_section SectionTable[NumberOfSections] = { 
+      {{'.', 'i', 'd', 'a', 't', 'a', '$', '2'}, 
+       u32(0), 
+       u32(0), 
+       u32(sizeof(coff_import_directory_table_entry)), 
+       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section)), 
+       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section) + 
+           sizeof(coff_import_directory_table_entry)), 
+       u32(0), 
+       u16(NumberOfRelocations), 
+       u16(0), 
+       u32(IMAGE_SCN_ALIGN_4BYTES | IMAGE_SCN_CNT_INITIALIZED_DATA | 
+           IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE)}, 
+      {{'.', 'i', 'd', 'a', 't', 'a', '$', '6'}, 
+       u32(0), 
+       u32(0), 
+       u32(ImportName.size() + 1), 
+       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section) + 
+           sizeof(coff_import_directory_table_entry) + 
+           NumberOfRelocations * sizeof(coff_relocation)), 
+       u32(0), 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       u32(IMAGE_SCN_ALIGN_2BYTES | IMAGE_SCN_CNT_INITIALIZED_DATA | 
+           IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE)}, 
+  }; 
+  append(Buffer, SectionTable); 
+ 
+  // .idata$2 
+  const coff_import_directory_table_entry ImportDescriptor{ 
+      u32(0), u32(0), u32(0), u32(0), u32(0), 
+  }; 
+  append(Buffer, ImportDescriptor); 
+ 
+  const coff_relocation RelocationTable[NumberOfRelocations] = { 
+      {u32(offsetof(coff_import_directory_table_entry, NameRVA)), u32(2), 
+       u16(getImgRelRelocation(Machine))}, 
+      {u32(offsetof(coff_import_directory_table_entry, ImportLookupTableRVA)), 
+       u32(3), u16(getImgRelRelocation(Machine))}, 
+      {u32(offsetof(coff_import_directory_table_entry, ImportAddressTableRVA)), 
+       u32(4), u16(getImgRelRelocation(Machine))}, 
+  }; 
+  append(Buffer, RelocationTable); 
+ 
+  // .idata$6 
+  auto S = Buffer.size(); 
+  Buffer.resize(S + ImportName.size() + 1); 
+  memcpy(&Buffer[S], ImportName.data(), ImportName.size()); 
+  Buffer[S + ImportName.size()] = '\0'; 
+ 
+  // Symbol Table 
+  coff_symbol16 SymbolTable[NumberOfSymbols] = { 
+      {{{0, 0, 0, 0, 0, 0, 0, 0}}, 
+       u32(0), 
+       u16(1), 
+       u16(0), 
+       IMAGE_SYM_CLASS_EXTERNAL, 
+       0}, 
+      {{{'.', 'i', 'd', 'a', 't', 'a', '$', '2'}}, 
+       u32(0), 
+       u16(1), 
+       u16(0), 
+       IMAGE_SYM_CLASS_SECTION, 
+       0}, 
+      {{{'.', 'i', 'd', 'a', 't', 'a', '$', '6'}}, 
+       u32(0), 
+       u16(2), 
+       u16(0), 
+       IMAGE_SYM_CLASS_STATIC, 
+       0}, 
+      {{{'.', 'i', 'd', 'a', 't', 'a', '$', '4'}}, 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       IMAGE_SYM_CLASS_SECTION, 
+       0}, 
+      {{{'.', 'i', 'd', 'a', 't', 'a', '$', '5'}}, 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       IMAGE_SYM_CLASS_SECTION, 
+       0}, 
+      {{{0, 0, 0, 0, 0, 0, 0, 0}}, 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       IMAGE_SYM_CLASS_EXTERNAL, 
+       0}, 
+      {{{0, 0, 0, 0, 0, 0, 0, 0}}, 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       IMAGE_SYM_CLASS_EXTERNAL, 
+       0}, 
+  }; 
+  // TODO: Name.Offset.Offset here and in the all similar places below 
+  // suggests a names refactoring. Maybe StringTableOffset.Value? 
+  SymbolTable[0].Name.Offset.Offset = 
+      sizeof(uint32_t); 
+  SymbolTable[5].Name.Offset.Offset = 
+      sizeof(uint32_t) + ImportDescriptorSymbolName.length() + 1; 
+  SymbolTable[6].Name.Offset.Offset = 
+      sizeof(uint32_t) + ImportDescriptorSymbolName.length() + 1 + 
+      NullImportDescriptorSymbolName.length() + 1; 
+  append(Buffer, SymbolTable); 
+ 
+  // String Table 
+  writeStringTable(Buffer, 
+                   {ImportDescriptorSymbolName, NullImportDescriptorSymbolName, 
+                    NullThunkSymbolName}); 
+ 
+  StringRef F{reinterpret_cast<const char *>(Buffer.data()), Buffer.size()}; 
+  return {MemoryBufferRef(F, ImportName)}; 
+} 
+ 
+NewArchiveMember 
+ObjectFactory::createNullImportDescriptor(std::vector<uint8_t> &Buffer) { 
+  const uint32_t NumberOfSections = 1; 
+  const uint32_t NumberOfSymbols = 1; 
+ 
+  // COFF Header 
+  coff_file_header Header{ 
+      u16(Machine), 
+      u16(NumberOfSections), 
+      u32(0), 
+      u32(sizeof(Header) + (NumberOfSections * sizeof(coff_section)) + 
+          // .idata$3 
+          sizeof(coff_import_directory_table_entry)), 
+      u32(NumberOfSymbols), 
+      u16(0), 
+      u16(is32bit(Machine) ? IMAGE_FILE_32BIT_MACHINE : C_Invalid), 
+  }; 
+  append(Buffer, Header); 
+ 
+  // Section Header Table 
+  const coff_section SectionTable[NumberOfSections] = { 
+      {{'.', 'i', 'd', 'a', 't', 'a', '$', '3'}, 
+       u32(0), 
+       u32(0), 
+       u32(sizeof(coff_import_directory_table_entry)), 
+       u32(sizeof(coff_file_header) + 
+           (NumberOfSections * sizeof(coff_section))), 
+       u32(0), 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       u32(IMAGE_SCN_ALIGN_4BYTES | IMAGE_SCN_CNT_INITIALIZED_DATA | 
+           IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE)}, 
+  }; 
+  append(Buffer, SectionTable); 
+ 
+  // .idata$3 
+  const coff_import_directory_table_entry ImportDescriptor{ 
+      u32(0), u32(0), u32(0), u32(0), u32(0), 
+  }; 
+  append(Buffer, ImportDescriptor); 
+ 
+  // Symbol Table 
+  coff_symbol16 SymbolTable[NumberOfSymbols] = { 
+      {{{0, 0, 0, 0, 0, 0, 0, 0}}, 
+       u32(0), 
+       u16(1), 
+       u16(0), 
+       IMAGE_SYM_CLASS_EXTERNAL, 
+       0}, 
+  }; 
+  SymbolTable[0].Name.Offset.Offset = sizeof(uint32_t); 
+  append(Buffer, SymbolTable); 
+ 
+  // String Table 
+  writeStringTable(Buffer, {NullImportDescriptorSymbolName}); 
+ 
+  StringRef F{reinterpret_cast<const char *>(Buffer.data()), Buffer.size()}; 
+  return {MemoryBufferRef(F, ImportName)}; 
+} 
+ 
+NewArchiveMember ObjectFactory::createNullThunk(std::vector<uint8_t> &Buffer) { 
+  const uint32_t NumberOfSections = 2; 
+  const uint32_t NumberOfSymbols = 1; 
+  uint32_t VASize = is32bit(Machine) ? 4 : 8; 
+ 
+  // COFF Header 
+  coff_file_header Header{ 
+      u16(Machine), 
+      u16(NumberOfSections), 
+      u32(0), 
+      u32(sizeof(Header) + (NumberOfSections * sizeof(coff_section)) + 
+          // .idata$5 
+          VASize + 
+          // .idata$4 
+          VASize), 
+      u32(NumberOfSymbols), 
+      u16(0), 
+      u16(is32bit(Machine) ? IMAGE_FILE_32BIT_MACHINE : C_Invalid), 
+  }; 
+  append(Buffer, Header); 
+ 
+  // Section Header Table 
+  const coff_section SectionTable[NumberOfSections] = { 
+      {{'.', 'i', 'd', 'a', 't', 'a', '$', '5'}, 
+       u32(0), 
+       u32(0), 
+       u32(VASize), 
+       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section)), 
+       u32(0), 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       u32((is32bit(Machine) ? IMAGE_SCN_ALIGN_4BYTES 
+                             : IMAGE_SCN_ALIGN_8BYTES) | 
+           IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | 
+           IMAGE_SCN_MEM_WRITE)}, 
+      {{'.', 'i', 'd', 'a', 't', 'a', '$', '4'}, 
+       u32(0), 
+       u32(0), 
+       u32(VASize), 
+       u32(sizeof(coff_file_header) + NumberOfSections * sizeof(coff_section) + 
+           VASize), 
+       u32(0), 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       u32((is32bit(Machine) ? IMAGE_SCN_ALIGN_4BYTES 
+                             : IMAGE_SCN_ALIGN_8BYTES) | 
+           IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | 
+           IMAGE_SCN_MEM_WRITE)}, 
+  }; 
+  append(Buffer, SectionTable); 
+ 
+  // .idata$5, ILT 
+  append(Buffer, u32(0)); 
+  if (!is32bit(Machine)) 
+    append(Buffer, u32(0)); 
+ 
+  // .idata$4, IAT 
+  append(Buffer, u32(0)); 
+  if (!is32bit(Machine)) 
+    append(Buffer, u32(0)); 
+ 
+  // Symbol Table 
+  coff_symbol16 SymbolTable[NumberOfSymbols] = { 
+      {{{0, 0, 0, 0, 0, 0, 0, 0}}, 
+       u32(0), 
+       u16(1), 
+       u16(0), 
+       IMAGE_SYM_CLASS_EXTERNAL, 
+       0}, 
+  }; 
+  SymbolTable[0].Name.Offset.Offset = sizeof(uint32_t); 
+  append(Buffer, SymbolTable); 
+ 
+  // String Table 
+  writeStringTable(Buffer, {NullThunkSymbolName}); 
+ 
+  StringRef F{reinterpret_cast<const char *>(Buffer.data()), Buffer.size()}; 
+  return {MemoryBufferRef{F, ImportName}}; 
+} 
+ 
+NewArchiveMember ObjectFactory::createShortImport(StringRef Sym, 
+                                                  uint16_t Ordinal, 
+                                                  ImportType ImportType, 
+                                                  ImportNameType NameType) { 
+  size_t ImpSize = ImportName.size() + Sym.size() + 2; // +2 for NULs 
+  size_t Size = sizeof(coff_import_header) + ImpSize; 
+  char *Buf = Alloc.Allocate<char>(Size); 
+  memset(Buf, 0, Size); 
+  char *P = Buf; 
+ 
+  // Write short import library. 
+  auto *Imp = reinterpret_cast<coff_import_header *>(P); 
+  P += sizeof(*Imp); 
+  Imp->Sig2 = 0xFFFF; 
+  Imp->Machine = Machine; 
+  Imp->SizeOfData = ImpSize; 
+  if (Ordinal > 0) 
+    Imp->OrdinalHint = Ordinal; 
+  Imp->TypeInfo = (NameType << 2) | ImportType; 
+ 
+  // Write symbol name and DLL name. 
+  memcpy(P, Sym.data(), Sym.size()); 
+  P += Sym.size() + 1; 
+  memcpy(P, ImportName.data(), ImportName.size()); 
+ 
+  return {MemoryBufferRef(StringRef(Buf, Size), ImportName)}; 
+} 
+ 
+NewArchiveMember ObjectFactory::createWeakExternal(StringRef Sym, 
+                                                   StringRef Weak, bool Imp) { 
+  std::vector<uint8_t> Buffer; 
+  const uint32_t NumberOfSections = 1; 
+  const uint32_t NumberOfSymbols = 5; 
+ 
+  // COFF Header 
+  coff_file_header Header{ 
+      u16(Machine), 
+      u16(NumberOfSections), 
+      u32(0), 
+      u32(sizeof(Header) + (NumberOfSections * sizeof(coff_section))), 
+      u32(NumberOfSymbols), 
+      u16(0), 
+      u16(0), 
+  }; 
+  append(Buffer, Header); 
+ 
+  // Section Header Table 
+  const coff_section SectionTable[NumberOfSections] = { 
+      {{'.', 'd', 'r', 'e', 'c', 't', 'v', 'e'}, 
+       u32(0), 
+       u32(0), 
+       u32(0), 
+       u32(0), 
+       u32(0), 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       u32(IMAGE_SCN_LNK_INFO | IMAGE_SCN_LNK_REMOVE)}}; 
+  append(Buffer, SectionTable); 
+ 
+  // Symbol Table 
+  coff_symbol16 SymbolTable[NumberOfSymbols] = { 
+      {{{'@', 'c', 'o', 'm', 'p', '.', 'i', 'd'}}, 
+       u32(0), 
+       u16(0xFFFF), 
+       u16(0), 
+       IMAGE_SYM_CLASS_STATIC, 
+       0}, 
+      {{{'@', 'f', 'e', 'a', 't', '.', '0', '0'}}, 
+       u32(0), 
+       u16(0xFFFF), 
+       u16(0), 
+       IMAGE_SYM_CLASS_STATIC, 
+       0}, 
+      {{{0, 0, 0, 0, 0, 0, 0, 0}}, 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       IMAGE_SYM_CLASS_EXTERNAL, 
+       0}, 
+      {{{0, 0, 0, 0, 0, 0, 0, 0}}, 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       IMAGE_SYM_CLASS_WEAK_EXTERNAL, 
+       1}, 
+      {{{2, 0, 0, 0, IMAGE_WEAK_EXTERN_SEARCH_ALIAS, 0, 0, 0}}, 
+       u32(0), 
+       u16(0), 
+       u16(0), 
+       IMAGE_SYM_CLASS_NULL, 
+       0}, 
+  }; 
+  SymbolTable[2].Name.Offset.Offset = sizeof(uint32_t); 
+ 
+  //__imp_ String Table 
+  StringRef Prefix = Imp ? "__imp_" : ""; 
+  SymbolTable[3].Name.Offset.Offset = 
+      sizeof(uint32_t) + Sym.size() + Prefix.size() + 1; 
+  append(Buffer, SymbolTable); 
+  writeStringTable(Buffer, {(Prefix + Sym).str(), 
+                            (Prefix + Weak).str()}); 
+ 
+  // Copied here so we can still use writeStringTable 
+  char *Buf = Alloc.Allocate<char>(Buffer.size()); 
+  memcpy(Buf, Buffer.data(), Buffer.size()); 
+  return {MemoryBufferRef(StringRef(Buf, Buffer.size()), ImportName)}; 
+} 
+ 
+Error writeImportLibrary(StringRef ImportName, StringRef Path, 
+                         ArrayRef<COFFShortExport> Exports, 
+                         MachineTypes Machine, bool MinGW) { 
+ 
+  std::vector<NewArchiveMember> Members; 
+  ObjectFactory OF(llvm::sys::path::filename(ImportName), Machine); 
+ 
+  std::vector<uint8_t> ImportDescriptor; 
+  Members.push_back(OF.createImportDescriptor(ImportDescriptor)); 
+ 
+  std::vector<uint8_t> NullImportDescriptor; 
+  Members.push_back(OF.createNullImportDescriptor(NullImportDescriptor)); 
+ 
+  std::vector<uint8_t> NullThunk; 
+  Members.push_back(OF.createNullThunk(NullThunk)); 
+ 
+  for (COFFShortExport E : Exports) { 
+    if (E.Private) 
+      continue; 
+ 
+    ImportType ImportType = IMPORT_CODE; 
+    if (E.Data) 
+      ImportType = IMPORT_DATA; 
+    if (E.Constant) 
+      ImportType = IMPORT_CONST; 
+ 
+    StringRef SymbolName = E.SymbolName.empty() ? E.Name : E.SymbolName; 
+    ImportNameType NameType = E.Noname 
+                                  ? IMPORT_ORDINAL 
+                                  : getNameType(SymbolName, E.Name, 
+                                                Machine, MinGW); 
+    Expected<std::string> Name = E.ExtName.empty() 
+                                     ? std::string(SymbolName) 
+                                     : replace(SymbolName, E.Name, E.ExtName); 
+ 
+    if (!Name) 
+      return Name.takeError(); 
+ 
+    if (!E.AliasTarget.empty() && *Name != E.AliasTarget) { 
+      Members.push_back(OF.createWeakExternal(E.AliasTarget, *Name, false)); 
+      Members.push_back(OF.createWeakExternal(E.AliasTarget, *Name, true)); 
+      continue; 
+    } 
+ 
+    Members.push_back( 
+        OF.createShortImport(*Name, E.Ordinal, ImportType, NameType)); 
+  } 
+ 
+  return writeArchive(Path, Members, /*WriteSymtab*/ true, 
+                      object::Archive::K_GNU, 
+                      /*Deterministic*/ true, /*Thin*/ false); 
+} 
+ 
+} // namespace object 
+} // namespace llvm