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llvm-project/llvm/utils/obj2yaml/coff2yaml.cpp

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//===------ utils/obj2yaml.cpp - obj2yaml conversion tool -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "obj2yaml.h"
#include "llvm/Object/COFF.h"
template <typename One, typename Two>
struct pod_pair { // I'd much rather use std::pair, but it's not a POD
One first;
Two second;
};
#define STRING_PAIR(x) {llvm::COFF::x, #x}
static const pod_pair<llvm::COFF::MachineTypes, const char *>
MachineTypePairs [] = {
STRING_PAIR(IMAGE_FILE_MACHINE_UNKNOWN),
STRING_PAIR(IMAGE_FILE_MACHINE_AM33),
STRING_PAIR(IMAGE_FILE_MACHINE_AMD64),
STRING_PAIR(IMAGE_FILE_MACHINE_ARM),
STRING_PAIR(IMAGE_FILE_MACHINE_ARMV7),
STRING_PAIR(IMAGE_FILE_MACHINE_EBC),
STRING_PAIR(IMAGE_FILE_MACHINE_I386),
STRING_PAIR(IMAGE_FILE_MACHINE_IA64),
STRING_PAIR(IMAGE_FILE_MACHINE_M32R),
STRING_PAIR(IMAGE_FILE_MACHINE_MIPS16),
STRING_PAIR(IMAGE_FILE_MACHINE_MIPSFPU),
STRING_PAIR(IMAGE_FILE_MACHINE_MIPSFPU16),
STRING_PAIR(IMAGE_FILE_MACHINE_POWERPC),
STRING_PAIR(IMAGE_FILE_MACHINE_POWERPCFP),
STRING_PAIR(IMAGE_FILE_MACHINE_R4000),
STRING_PAIR(IMAGE_FILE_MACHINE_SH3),
STRING_PAIR(IMAGE_FILE_MACHINE_SH3DSP),
STRING_PAIR(IMAGE_FILE_MACHINE_SH4),
STRING_PAIR(IMAGE_FILE_MACHINE_SH5),
STRING_PAIR(IMAGE_FILE_MACHINE_THUMB),
STRING_PAIR(IMAGE_FILE_MACHINE_WCEMIPSV2)
};
static const pod_pair<llvm::COFF::SectionCharacteristics, const char *>
SectionCharacteristicsPairs1 [] = {
STRING_PAIR(IMAGE_SCN_TYPE_NO_PAD),
STRING_PAIR(IMAGE_SCN_CNT_CODE),
STRING_PAIR(IMAGE_SCN_CNT_INITIALIZED_DATA),
STRING_PAIR(IMAGE_SCN_CNT_UNINITIALIZED_DATA),
STRING_PAIR(IMAGE_SCN_LNK_OTHER),
STRING_PAIR(IMAGE_SCN_LNK_INFO),
STRING_PAIR(IMAGE_SCN_LNK_REMOVE),
STRING_PAIR(IMAGE_SCN_LNK_COMDAT),
STRING_PAIR(IMAGE_SCN_GPREL),
STRING_PAIR(IMAGE_SCN_MEM_PURGEABLE),
STRING_PAIR(IMAGE_SCN_MEM_16BIT),
STRING_PAIR(IMAGE_SCN_MEM_LOCKED),
STRING_PAIR(IMAGE_SCN_MEM_PRELOAD)
};
static const pod_pair<llvm::COFF::SectionCharacteristics, const char *>
SectionCharacteristicsPairsAlignment [] = {
STRING_PAIR(IMAGE_SCN_ALIGN_1BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_2BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_4BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_8BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_16BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_32BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_64BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_128BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_256BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_512BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_1024BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_2048BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_4096BYTES),
STRING_PAIR(IMAGE_SCN_ALIGN_8192BYTES)
};
static const pod_pair<llvm::COFF::SectionCharacteristics, const char *>
SectionCharacteristicsPairs2 [] = {
STRING_PAIR(IMAGE_SCN_LNK_NRELOC_OVFL),
STRING_PAIR(IMAGE_SCN_MEM_DISCARDABLE),
STRING_PAIR(IMAGE_SCN_MEM_NOT_CACHED),
STRING_PAIR(IMAGE_SCN_MEM_NOT_PAGED),
STRING_PAIR(IMAGE_SCN_MEM_SHARED),
STRING_PAIR(IMAGE_SCN_MEM_EXECUTE),
STRING_PAIR(IMAGE_SCN_MEM_READ),
STRING_PAIR(IMAGE_SCN_MEM_WRITE)
};
static const pod_pair<llvm::COFF::SymbolBaseType, const char *>
SymbolBaseTypePairs [] = {
STRING_PAIR(IMAGE_SYM_TYPE_NULL),
STRING_PAIR(IMAGE_SYM_TYPE_VOID),
STRING_PAIR(IMAGE_SYM_TYPE_CHAR),
STRING_PAIR(IMAGE_SYM_TYPE_SHORT),
STRING_PAIR(IMAGE_SYM_TYPE_INT),
STRING_PAIR(IMAGE_SYM_TYPE_LONG),
STRING_PAIR(IMAGE_SYM_TYPE_FLOAT),
STRING_PAIR(IMAGE_SYM_TYPE_DOUBLE),
STRING_PAIR(IMAGE_SYM_TYPE_STRUCT),
STRING_PAIR(IMAGE_SYM_TYPE_UNION),
STRING_PAIR(IMAGE_SYM_TYPE_ENUM),
STRING_PAIR(IMAGE_SYM_TYPE_MOE),
STRING_PAIR(IMAGE_SYM_TYPE_BYTE),
STRING_PAIR(IMAGE_SYM_TYPE_WORD),
STRING_PAIR(IMAGE_SYM_TYPE_UINT),
STRING_PAIR(IMAGE_SYM_TYPE_DWORD)
};
static const pod_pair<llvm::COFF::SymbolComplexType, const char *>
SymbolComplexTypePairs [] = {
STRING_PAIR(IMAGE_SYM_DTYPE_NULL),
STRING_PAIR(IMAGE_SYM_DTYPE_POINTER),
STRING_PAIR(IMAGE_SYM_DTYPE_FUNCTION),
STRING_PAIR(IMAGE_SYM_DTYPE_ARRAY),
};
static const pod_pair<llvm::COFF::SymbolStorageClass, const char *>
SymbolStorageClassPairs [] = {
STRING_PAIR(IMAGE_SYM_CLASS_END_OF_FUNCTION),
STRING_PAIR(IMAGE_SYM_CLASS_NULL),
STRING_PAIR(IMAGE_SYM_CLASS_AUTOMATIC),
STRING_PAIR(IMAGE_SYM_CLASS_EXTERNAL),
STRING_PAIR(IMAGE_SYM_CLASS_STATIC),
STRING_PAIR(IMAGE_SYM_CLASS_REGISTER),
STRING_PAIR(IMAGE_SYM_CLASS_EXTERNAL_DEF),
STRING_PAIR(IMAGE_SYM_CLASS_LABEL),
STRING_PAIR(IMAGE_SYM_CLASS_UNDEFINED_LABEL),
STRING_PAIR(IMAGE_SYM_CLASS_MEMBER_OF_STRUCT),
STRING_PAIR(IMAGE_SYM_CLASS_ARGUMENT),
STRING_PAIR(IMAGE_SYM_CLASS_STRUCT_TAG),
STRING_PAIR(IMAGE_SYM_CLASS_MEMBER_OF_UNION),
STRING_PAIR(IMAGE_SYM_CLASS_UNION_TAG),
STRING_PAIR(IMAGE_SYM_CLASS_TYPE_DEFINITION),
STRING_PAIR(IMAGE_SYM_CLASS_UNDEFINED_STATIC),
STRING_PAIR(IMAGE_SYM_CLASS_ENUM_TAG),
STRING_PAIR(IMAGE_SYM_CLASS_MEMBER_OF_ENUM),
STRING_PAIR(IMAGE_SYM_CLASS_REGISTER_PARAM),
STRING_PAIR(IMAGE_SYM_CLASS_BIT_FIELD),
STRING_PAIR(IMAGE_SYM_CLASS_BLOCK),
STRING_PAIR(IMAGE_SYM_CLASS_FUNCTION),
STRING_PAIR(IMAGE_SYM_CLASS_END_OF_STRUCT),
STRING_PAIR(IMAGE_SYM_CLASS_FILE),
STRING_PAIR(IMAGE_SYM_CLASS_SECTION),
STRING_PAIR(IMAGE_SYM_CLASS_WEAK_EXTERNAL),
STRING_PAIR(IMAGE_SYM_CLASS_CLR_TOKEN),
};
static const pod_pair<llvm::COFF::RelocationTypeX86, const char *>
RelocationTypeX86Pairs [] = {
STRING_PAIR(IMAGE_REL_I386_ABSOLUTE),
STRING_PAIR(IMAGE_REL_I386_DIR16),
STRING_PAIR(IMAGE_REL_I386_REL16),
STRING_PAIR(IMAGE_REL_I386_DIR32),
STRING_PAIR(IMAGE_REL_I386_DIR32NB),
STRING_PAIR(IMAGE_REL_I386_SEG12),
STRING_PAIR(IMAGE_REL_I386_SECTION),
STRING_PAIR(IMAGE_REL_I386_SECREL),
STRING_PAIR(IMAGE_REL_I386_TOKEN),
STRING_PAIR(IMAGE_REL_I386_SECREL7),
STRING_PAIR(IMAGE_REL_I386_REL32),
STRING_PAIR(IMAGE_REL_AMD64_ABSOLUTE),
STRING_PAIR(IMAGE_REL_AMD64_ADDR64),
STRING_PAIR(IMAGE_REL_AMD64_ADDR32),
STRING_PAIR(IMAGE_REL_AMD64_ADDR32NB),
STRING_PAIR(IMAGE_REL_AMD64_REL32),
STRING_PAIR(IMAGE_REL_AMD64_REL32_1),
STRING_PAIR(IMAGE_REL_AMD64_REL32_2),
STRING_PAIR(IMAGE_REL_AMD64_REL32_3),
STRING_PAIR(IMAGE_REL_AMD64_REL32_4),
STRING_PAIR(IMAGE_REL_AMD64_REL32_5),
STRING_PAIR(IMAGE_REL_AMD64_SECTION),
STRING_PAIR(IMAGE_REL_AMD64_SECREL),
STRING_PAIR(IMAGE_REL_AMD64_SECREL7),
STRING_PAIR(IMAGE_REL_AMD64_TOKEN),
STRING_PAIR(IMAGE_REL_AMD64_SREL32),
STRING_PAIR(IMAGE_REL_AMD64_PAIR),
STRING_PAIR(IMAGE_REL_AMD64_SSPAN32)
};
static const pod_pair<llvm::COFF::RelocationTypesARM, const char *>
RelocationTypesARMPairs [] = {
STRING_PAIR(IMAGE_REL_ARM_ABSOLUTE),
STRING_PAIR(IMAGE_REL_ARM_ADDR32),
STRING_PAIR(IMAGE_REL_ARM_ADDR32NB),
STRING_PAIR(IMAGE_REL_ARM_BRANCH24),
STRING_PAIR(IMAGE_REL_ARM_BRANCH11),
STRING_PAIR(IMAGE_REL_ARM_TOKEN),
STRING_PAIR(IMAGE_REL_ARM_BLX24),
STRING_PAIR(IMAGE_REL_ARM_BLX11),
STRING_PAIR(IMAGE_REL_ARM_SECTION),
STRING_PAIR(IMAGE_REL_ARM_SECREL),
STRING_PAIR(IMAGE_REL_ARM_MOV32A),
STRING_PAIR(IMAGE_REL_ARM_MOV32T),
STRING_PAIR(IMAGE_REL_ARM_BRANCH20T),
STRING_PAIR(IMAGE_REL_ARM_BRANCH24T),
STRING_PAIR(IMAGE_REL_ARM_BLX23T)
};
#undef STRING_PAIR
static const char endl = '\n';
namespace yaml { // COFF-specific yaml-writing specific routines
static llvm::raw_ostream &writeName(llvm::raw_ostream &Out,
const char *Name, std::size_t NameSize) {
for (std::size_t i = 0; i < NameSize; ++i) {
if (!Name[i]) break;
Out << Name[i];
}
return Out;
}
// Given an array of pod_pair<enum, const char *>, write all enums that match
template <typename T, std::size_t N>
static llvm::raw_ostream &writeBitMask(llvm::raw_ostream &Out,
const pod_pair<T, const char *> (&Arr)[N], unsigned long Val) {
for (std::size_t i = 0; i < N; ++i)
if (Val & Arr[i].first)
Out << Arr[i].second << ", ";
return Out;
}
} // end of yaml namespace
// Given an array of pod_pair<enum, const char *>, look up a value
template <typename T, std::size_t N>
const char *nameLookup(const pod_pair<T, const char *> (&Arr)[N],
unsigned long Val, const char *NotFound = NULL) {
T n = static_cast<T>(Val);
for (std::size_t i = 0; i < N; ++i)
if (n == Arr[i].first)
return Arr[i].second;
return NotFound;
}
static llvm::raw_ostream &yamlCOFFHeader(
const llvm::object::coff_file_header *Header,llvm::raw_ostream &Out) {
Out << "header: !Header" << endl;
Out << " Machine: ";
Out << nameLookup(MachineTypePairs, Header->Machine, "# Unknown_MachineTypes")
<< " # (";
return yaml::writeHexNumber(Out, Header->Machine) << ")" << endl << endl;
}
static llvm::raw_ostream &yamlCOFFSections(llvm::object::COFFObjectFile &Obj,
std::size_t NumSections, llvm::raw_ostream &Out) {
llvm::error_code ec;
Out << "sections:" << endl;
for (llvm::object::section_iterator iter = Obj.begin_sections();
iter != Obj.end_sections(); iter.increment(ec)) {
const llvm::object::coff_section *sect = Obj.getCOFFSection(iter);
Out << " - !Section" << endl;
Out << " Name: ";
yaml::writeName(Out, sect->Name, sizeof(sect->Name)) << endl;
Out << " Characteristics: [";
yaml::writeBitMask(Out, SectionCharacteristicsPairs1, sect->Characteristics);
Out << nameLookup(SectionCharacteristicsPairsAlignment,
sect->Characteristics & 0x00F00000, "# Unrecognized_IMAGE_SCN_ALIGN")
<< ", ";
yaml::writeBitMask(Out, SectionCharacteristicsPairs2, sect->Characteristics);
Out << "] # ";
yaml::writeHexNumber(Out, sect->Characteristics) << endl;
llvm::ArrayRef<uint8_t> sectionData;
Obj.getSectionContents(sect, sectionData);
Out << " SectionData: ";
yaml::writeHexStream(Out, sectionData) << endl;
if (iter->begin_relocations() != iter->end_relocations())
Out << " Relocations:\n";
for (llvm::object::relocation_iterator rIter = iter->begin_relocations();
rIter != iter->end_relocations(); rIter.increment(ec)) {
const llvm::object::coff_relocation *reloc = Obj.getCOFFRelocation(rIter);
Out << " - !Relocation" << endl;
Out << " VirtualAddress: " ;
yaml::writeHexNumber(Out, reloc->VirtualAddress) << endl;
Out << " SymbolTableIndex: " << reloc->SymbolTableIndex << endl;
Out << " Type: "
<< nameLookup(RelocationTypeX86Pairs, reloc->Type) << endl;
// TODO: Use the correct reloc type for the machine.
Out << endl;
}
}
return Out;
}
static llvm::raw_ostream& yamlCOFFSymbols(llvm::object::COFFObjectFile &Obj,
std::size_t NumSymbols, llvm::raw_ostream &Out) {
llvm::error_code ec;
Out << "symbols:" << endl;
for (llvm::object::symbol_iterator iter = Obj.begin_symbols();
iter != Obj.end_symbols(); iter.increment(ec)) {
// Gather all the info that we need
llvm::StringRef str;
const llvm::object::coff_symbol *symbol = Obj.getCOFFSymbol(iter);
Obj.getSymbolName(symbol, str);
std::size_t simpleType = symbol->getBaseType();
std::size_t complexType = symbol->getComplexType();
std::size_t storageClass = symbol->StorageClass;
Out << " - !Symbol" << endl;
Out << " Name: " << str << endl;
Out << " Value: " << symbol->Value << endl;
Out << " SectionNumber: " << symbol->SectionNumber << endl;
Out << " SimpleType: "
<< nameLookup(SymbolBaseTypePairs, simpleType,
"# Unknown_SymbolBaseType")
<< " # (" << simpleType << ")" << endl;
Out << " ComplexType: "
<< nameLookup(SymbolComplexTypePairs, complexType,
"# Unknown_SymbolComplexType")
<< " # (" << complexType << ")" << endl;
Out << " StorageClass: "
<< nameLookup(SymbolStorageClassPairs, storageClass,
"# Unknown_StorageClass")
<< " # (" << (int) storageClass << ")" << endl;
if (symbol->NumberOfAuxSymbols > 0) {
llvm::ArrayRef<uint8_t> aux = Obj.getSymbolAuxData(symbol);
Out << " NumberOfAuxSymbols: "
<< (int) symbol->NumberOfAuxSymbols << endl;
Out << " AuxillaryData: ";
yaml::writeHexStream(Out, aux);
}
Out << endl;
}
return Out;
}
llvm::error_code coff2yaml(llvm::raw_ostream &Out, llvm::MemoryBuffer *TheObj) {
llvm::error_code ec;
llvm::object::COFFObjectFile obj(TheObj, ec);
if (!ec) {
const llvm::object::coff_file_header *hd;
ec = obj.getHeader(hd);
if (!ec) {
yamlCOFFHeader(hd, Out);
yamlCOFFSections(obj, hd->NumberOfSections, Out);
yamlCOFFSymbols(obj, hd->NumberOfSymbols, Out);
}
}
return ec;
}
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