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//===-- llvm/BinaryFormat/XCOFF.cpp - The XCOFF file format -----*- 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 "llvm/BinaryFormat/XCOFF.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/Error.h"
using namespace llvm;
#define SMC_CASE(A) \
case XCOFF::XMC_##A: \
return #A;
StringRef XCOFF::getMappingClassString(XCOFF::StorageMappingClass SMC) {
switch (SMC) {
SMC_CASE(PR)
SMC_CASE(RO)
SMC_CASE(DB)
SMC_CASE(GL)
SMC_CASE(XO)
SMC_CASE(SV)
SMC_CASE(SV64)
SMC_CASE(SV3264)
SMC_CASE(TI)
SMC_CASE(TB)
SMC_CASE(RW)
SMC_CASE(TC0)
SMC_CASE(TC)
SMC_CASE(TD)
SMC_CASE(DS)
SMC_CASE(UA)
SMC_CASE(BS)
SMC_CASE(UC)
SMC_CASE(TL)
SMC_CASE(UL)
SMC_CASE(TE)
#undef SMC_CASE
}
// TODO: need to add a test case for "Unknown" and other SMC.
return "Unknown";
}
#define RELOC_CASE(A) \
case XCOFF::A: \
return #A;
StringRef XCOFF::getRelocationTypeString(XCOFF::RelocationType Type) {
switch (Type) {
RELOC_CASE(R_POS)
RELOC_CASE(R_RL)
RELOC_CASE(R_RLA)
RELOC_CASE(R_NEG)
RELOC_CASE(R_REL)
RELOC_CASE(R_TOC)
RELOC_CASE(R_TRL)
RELOC_CASE(R_TRLA)
RELOC_CASE(R_GL)
RELOC_CASE(R_TCL)
RELOC_CASE(R_REF)
RELOC_CASE(R_BA)
RELOC_CASE(R_BR)
RELOC_CASE(R_RBA)
RELOC_CASE(R_RBR)
RELOC_CASE(R_TLS)
RELOC_CASE(R_TLS_IE)
RELOC_CASE(R_TLS_LD)
RELOC_CASE(R_TLS_LE)
RELOC_CASE(R_TLSM)
RELOC_CASE(R_TLSML)
RELOC_CASE(R_TOCU)
RELOC_CASE(R_TOCL)
}
return "Unknown";
}
#undef RELOC_CASE
#define LANG_CASE(A) \
case XCOFF::TracebackTable::A: \
return #A;
StringRef XCOFF::getNameForTracebackTableLanguageId(
XCOFF::TracebackTable::LanguageID LangId) {
switch (LangId) {
LANG_CASE(C)
LANG_CASE(Fortran)
LANG_CASE(Pascal)
LANG_CASE(Ada)
LANG_CASE(PL1)
LANG_CASE(Basic)
LANG_CASE(Lisp)
LANG_CASE(Cobol)
LANG_CASE(Modula2)
LANG_CASE(Rpg)
LANG_CASE(PL8)
LANG_CASE(Assembly)
LANG_CASE(Java)
LANG_CASE(ObjectiveC)
LANG_CASE(CPlusPlus)
}
return "Unknown";
}
#undef LANG_CASE
Expected<SmallString<32>> XCOFF::parseParmsType(uint32_t Value,
unsigned FixedParmsNum,
unsigned FloatingParmsNum) {
SmallString<32> ParmsType;
int Bits = 0;
unsigned ParsedFixedNum = 0;
unsigned ParsedFloatingNum = 0;
unsigned ParsedNum = 0;
unsigned ParmsNum = FixedParmsNum + FloatingParmsNum;
// In the function PPCFunctionInfo::getParmsType(), when there are no vector
// parameters, the 31st bit of ParmsType is always zero even if it indicates a
// floating point parameter. The parameter type information is lost. There
// are only 8 GPRs used for parameters passing, the floating parameters
// also occupy GPRs if there are available, so the 31st bit can never be a
// fixed parameter. At the same time, we also do not know whether the zero of
// the 31st bit indicates a float or double parameter type here. Therefore, we
// ignore the 31st bit.
while (Bits < 31 && ParsedNum < ParmsNum) {
if (++ParsedNum > 1)
ParmsType += ", ";
if ((Value & TracebackTable::ParmTypeIsFloatingBit) == 0) {
// Fixed parameter type.
ParmsType += "i";
++ParsedFixedNum;
Value <<= 1;
++Bits;
} else {
if ((Value & TracebackTable::ParmTypeFloatingIsDoubleBit) == 0)
// Float parameter type.
ParmsType += "f";
else
// Double parameter type.
ParmsType += "d";
++ParsedFloatingNum;
Value <<= 2;
Bits += 2;
}
}
// We have more parameters than the 32 Bits could encode.
if (ParsedNum < ParmsNum)
ParmsType += ", ...";
if (Value != 0u || ParsedFixedNum > FixedParmsNum ||
ParsedFloatingNum > FloatingParmsNum)
return createStringError(errc::invalid_argument,
"ParmsType encodes can not map to ParmsNum "
"parameters in parseParmsType.");
return ParmsType;
}
SmallString<32> XCOFF::getExtendedTBTableFlagString(uint8_t Flag) {
SmallString<32> Res;
if (Flag & ExtendedTBTableFlag::TB_OS1)
Res += "TB_OS1 ";
if (Flag & ExtendedTBTableFlag::TB_RESERVED)
Res += "TB_RESERVED ";
if (Flag & ExtendedTBTableFlag::TB_SSP_CANARY)
Res += "TB_SSP_CANARY ";
if (Flag & ExtendedTBTableFlag::TB_OS2)
Res += "TB_OS2 ";
if (Flag & ExtendedTBTableFlag::TB_EH_INFO)
Res += "TB_EH_INFO ";
if (Flag & ExtendedTBTableFlag::TB_LONGTBTABLE2)
Res += "TB_LONGTBTABLE2 ";
// Two of the bits that haven't got used in the mask.
if (Flag & 0x06)
Res += "Unknown ";
// Pop the last space.
Res.pop_back();
return Res;
}
Expected<SmallString<32>>
XCOFF::parseParmsTypeWithVecInfo(uint32_t Value, unsigned FixedParmsNum,
unsigned FloatingParmsNum,
unsigned VectorParmsNum) {
SmallString<32> ParmsType;
unsigned ParsedFixedNum = 0;
unsigned ParsedFloatingNum = 0;
unsigned ParsedVectorNum = 0;
unsigned ParsedNum = 0;
unsigned ParmsNum = FixedParmsNum + FloatingParmsNum + VectorParmsNum;
for (int Bits = 0; Bits < 32 && ParsedNum < ParmsNum; Bits += 2) {
if (++ParsedNum > 1)
ParmsType += ", ";
switch (Value & TracebackTable::ParmTypeMask) {
case TracebackTable::ParmTypeIsFixedBits:
ParmsType += "i";
++ParsedFixedNum;
break;
case TracebackTable::ParmTypeIsVectorBits:
ParmsType += "v";
++ParsedVectorNum;
break;
case TracebackTable::ParmTypeIsFloatingBits:
ParmsType += "f";
++ParsedFloatingNum;
break;
case TracebackTable::ParmTypeIsDoubleBits:
ParmsType += "d";
++ParsedFloatingNum;
break;
default:
assert(false && "Unrecognized bits in ParmsType.");
}
Value <<= 2;
}
// We have more parameters than the 32 Bits could encode.
if (ParsedNum < ParmsNum)
ParmsType += ", ...";
if (Value != 0u || ParsedFixedNum > FixedParmsNum ||
ParsedFloatingNum > FloatingParmsNum || ParsedVectorNum > VectorParmsNum)
return createStringError(
errc::invalid_argument,
"ParmsType encodes can not map to ParmsNum parameters "
"in parseParmsTypeWithVecInfo.");
return ParmsType;
}
Expected<SmallString<32>> XCOFF::parseVectorParmsType(uint32_t Value,
unsigned ParmsNum) {
SmallString<32> ParmsType;
unsigned ParsedNum = 0;
for (int Bits = 0; ParsedNum < ParmsNum && Bits < 32; Bits += 2) {
if (++ParsedNum > 1)
ParmsType += ", ";
switch (Value & TracebackTable::ParmTypeMask) {
case TracebackTable::ParmTypeIsVectorCharBit:
ParmsType += "vc";
break;
case TracebackTable::ParmTypeIsVectorShortBit:
ParmsType += "vs";
break;
case TracebackTable::ParmTypeIsVectorIntBit:
ParmsType += "vi";
break;
case TracebackTable::ParmTypeIsVectorFloatBit:
ParmsType += "vf";
break;
}
Value <<= 2;
}
// We have more parameters than the 32 Bits could encode.
if (ParsedNum < ParmsNum)
ParmsType += ", ...";
if (Value != 0u)
return createStringError(errc::invalid_argument,
"ParmsType encodes more than ParmsNum parameters "
"in parseVectorParmsType.");
return ParmsType;
}
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