[yaml2obj] Move core yaml2obj code into lib and include for use in unit tests
Reviewers: jhenderson, rupprecht, MaskRay, grimar, labath
Reviewed By: rupprecht
Subscribers: gribozavr, mgrang, seiya, mgorny, sbc100, hiraditya, aheejin, jakehehrlich, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D65255
llvm-svn: 368119
diff --git a/llvm/lib/ObjectYAML/COFFEmitter.cpp b/llvm/lib/ObjectYAML/COFFEmitter.cpp
new file mode 100644
index 0000000..d94cdbf
--- /dev/null
+++ b/llvm/lib/ObjectYAML/COFFEmitter.cpp
@@ -0,0 +1,619 @@
+//===- yaml2coff - Convert YAML to a COFF 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// The COFF component of yaml2obj.
+///
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
+#include "llvm/DebugInfo/CodeView/StringsAndChecksums.h"
+#include "llvm/Object/COFF.h"
+#include "llvm/ObjectYAML/ObjectYAML.h"
+#include "llvm/ObjectYAML/yaml2obj.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/WithColor.h"
+#include "llvm/Support/raw_ostream.h"
+#include <vector>
+
+using namespace llvm;
+
+namespace {
+
+/// This parses a yaml stream that represents a COFF object file.
+/// See docs/yaml2obj for the yaml scheema.
+struct COFFParser {
+ COFFParser(COFFYAML::Object &Obj)
+ : Obj(Obj), SectionTableStart(0), SectionTableSize(0) {
+ // A COFF string table always starts with a 4 byte size field. Offsets into
+ // it include this size, so allocate it now.
+ StringTable.append(4, char(0));
+ }
+
+ bool useBigObj() const {
+ return static_cast<int32_t>(Obj.Sections.size()) >
+ COFF::MaxNumberOfSections16;
+ }
+
+ bool isPE() const { return Obj.OptionalHeader.hasValue(); }
+ bool is64Bit() const {
+ return Obj.Header.Machine == COFF::IMAGE_FILE_MACHINE_AMD64 ||
+ Obj.Header.Machine == COFF::IMAGE_FILE_MACHINE_ARM64;
+ }
+
+ uint32_t getFileAlignment() const {
+ return Obj.OptionalHeader->Header.FileAlignment;
+ }
+
+ unsigned getHeaderSize() const {
+ return useBigObj() ? COFF::Header32Size : COFF::Header16Size;
+ }
+
+ unsigned getSymbolSize() const {
+ return useBigObj() ? COFF::Symbol32Size : COFF::Symbol16Size;
+ }
+
+ bool parseSections() {
+ for (std::vector<COFFYAML::Section>::iterator i = Obj.Sections.begin(),
+ e = Obj.Sections.end();
+ i != e; ++i) {
+ COFFYAML::Section &Sec = *i;
+
+ // If the name is less than 8 bytes, store it in place, otherwise
+ // store it in the string table.
+ StringRef Name = Sec.Name;
+
+ if (Name.size() <= COFF::NameSize) {
+ std::copy(Name.begin(), Name.end(), Sec.Header.Name);
+ } else {
+ // Add string to the string table and format the index for output.
+ unsigned Index = getStringIndex(Name);
+ std::string str = utostr(Index);
+ if (str.size() > 7) {
+ errs() << "String table got too large\n";
+ return false;
+ }
+ Sec.Header.Name[0] = '/';
+ std::copy(str.begin(), str.end(), Sec.Header.Name + 1);
+ }
+
+ if (Sec.Alignment) {
+ if (Sec.Alignment > 8192) {
+ errs() << "Section alignment is too large\n";
+ return false;
+ }
+ if (!isPowerOf2_32(Sec.Alignment)) {
+ errs() << "Section alignment is not a power of 2\n";
+ return false;
+ }
+ Sec.Header.Characteristics |= (Log2_32(Sec.Alignment) + 1) << 20;
+ }
+ }
+ return true;
+ }
+
+ bool parseSymbols() {
+ for (std::vector<COFFYAML::Symbol>::iterator i = Obj.Symbols.begin(),
+ e = Obj.Symbols.end();
+ i != e; ++i) {
+ COFFYAML::Symbol &Sym = *i;
+
+ // If the name is less than 8 bytes, store it in place, otherwise
+ // store it in the string table.
+ StringRef Name = Sym.Name;
+ if (Name.size() <= COFF::NameSize) {
+ std::copy(Name.begin(), Name.end(), Sym.Header.Name);
+ } else {
+ // Add string to the string table and format the index for output.
+ unsigned Index = getStringIndex(Name);
+ *reinterpret_cast<support::aligned_ulittle32_t *>(Sym.Header.Name + 4) =
+ Index;
+ }
+
+ Sym.Header.Type = Sym.SimpleType;
+ Sym.Header.Type |= Sym.ComplexType << COFF::SCT_COMPLEX_TYPE_SHIFT;
+ }
+ return true;
+ }
+
+ bool parse() {
+ if (!parseSections())
+ return false;
+ if (!parseSymbols())
+ return false;
+ return true;
+ }
+
+ unsigned getStringIndex(StringRef Str) {
+ StringMap<unsigned>::iterator i = StringTableMap.find(Str);
+ if (i == StringTableMap.end()) {
+ unsigned Index = StringTable.size();
+ StringTable.append(Str.begin(), Str.end());
+ StringTable.push_back(0);
+ StringTableMap[Str] = Index;
+ return Index;
+ }
+ return i->second;
+ }
+
+ COFFYAML::Object &Obj;
+
+ codeview::StringsAndChecksums StringsAndChecksums;
+ BumpPtrAllocator Allocator;
+ StringMap<unsigned> StringTableMap;
+ std::string StringTable;
+ uint32_t SectionTableStart;
+ uint32_t SectionTableSize;
+};
+
+enum { DOSStubSize = 128 };
+
+} // end anonymous namespace
+
+// Take a CP and assign addresses and sizes to everything. Returns false if the
+// layout is not valid to do.
+static bool layoutOptionalHeader(COFFParser &CP) {
+ if (!CP.isPE())
+ return true;
+ unsigned PEHeaderSize = CP.is64Bit() ? sizeof(object::pe32plus_header)
+ : sizeof(object::pe32_header);
+ CP.Obj.Header.SizeOfOptionalHeader =
+ PEHeaderSize +
+ sizeof(object::data_directory) * (COFF::NUM_DATA_DIRECTORIES + 1);
+ return true;
+}
+
+static yaml::BinaryRef
+toDebugS(ArrayRef<CodeViewYAML::YAMLDebugSubsection> Subsections,
+ const codeview::StringsAndChecksums &SC, BumpPtrAllocator &Allocator) {
+ using namespace codeview;
+ ExitOnError Err("Error occurred writing .debug$S section");
+ auto CVSS =
+ Err(CodeViewYAML::toCodeViewSubsectionList(Allocator, Subsections, SC));
+
+ std::vector<DebugSubsectionRecordBuilder> Builders;
+ uint32_t Size = sizeof(uint32_t);
+ for (auto &SS : CVSS) {
+ DebugSubsectionRecordBuilder B(SS, CodeViewContainer::ObjectFile);
+ Size += B.calculateSerializedLength();
+ Builders.push_back(std::move(B));
+ }
+ uint8_t *Buffer = Allocator.Allocate<uint8_t>(Size);
+ MutableArrayRef<uint8_t> Output(Buffer, Size);
+ BinaryStreamWriter Writer(Output, support::little);
+
+ Err(Writer.writeInteger<uint32_t>(COFF::DEBUG_SECTION_MAGIC));
+ for (const auto &B : Builders) {
+ Err(B.commit(Writer));
+ }
+ return {Output};
+}
+
+// Take a CP and assign addresses and sizes to everything. Returns false if the
+// layout is not valid to do.
+static bool layoutCOFF(COFFParser &CP) {
+ // The section table starts immediately after the header, including the
+ // optional header.
+ CP.SectionTableStart =
+ CP.getHeaderSize() + CP.Obj.Header.SizeOfOptionalHeader;
+ if (CP.isPE())
+ CP.SectionTableStart += DOSStubSize + sizeof(COFF::PEMagic);
+ CP.SectionTableSize = COFF::SectionSize * CP.Obj.Sections.size();
+
+ uint32_t CurrentSectionDataOffset =
+ CP.SectionTableStart + CP.SectionTableSize;
+
+ for (COFFYAML::Section &S : CP.Obj.Sections) {
+ // We support specifying exactly one of SectionData or Subsections. So if
+ // there is already some SectionData, then we don't need to do any of this.
+ if (S.Name == ".debug$S" && S.SectionData.binary_size() == 0) {
+ CodeViewYAML::initializeStringsAndChecksums(S.DebugS,
+ CP.StringsAndChecksums);
+ if (CP.StringsAndChecksums.hasChecksums() &&
+ CP.StringsAndChecksums.hasStrings())
+ break;
+ }
+ }
+
+ // Assign each section data address consecutively.
+ for (COFFYAML::Section &S : CP.Obj.Sections) {
+ if (S.Name == ".debug$S") {
+ if (S.SectionData.binary_size() == 0) {
+ assert(CP.StringsAndChecksums.hasStrings() &&
+ "Object file does not have debug string table!");
+
+ S.SectionData =
+ toDebugS(S.DebugS, CP.StringsAndChecksums, CP.Allocator);
+ }
+ } else if (S.Name == ".debug$T") {
+ if (S.SectionData.binary_size() == 0)
+ S.SectionData = CodeViewYAML::toDebugT(S.DebugT, CP.Allocator, S.Name);
+ } else if (S.Name == ".debug$P") {
+ if (S.SectionData.binary_size() == 0)
+ S.SectionData = CodeViewYAML::toDebugT(S.DebugP, CP.Allocator, S.Name);
+ } else if (S.Name == ".debug$H") {
+ if (S.DebugH.hasValue() && S.SectionData.binary_size() == 0)
+ S.SectionData = CodeViewYAML::toDebugH(*S.DebugH, CP.Allocator);
+ }
+
+ if (S.SectionData.binary_size() > 0) {
+ CurrentSectionDataOffset = alignTo(CurrentSectionDataOffset,
+ CP.isPE() ? CP.getFileAlignment() : 4);
+ S.Header.SizeOfRawData = S.SectionData.binary_size();
+ if (CP.isPE())
+ S.Header.SizeOfRawData =
+ alignTo(S.Header.SizeOfRawData, CP.getFileAlignment());
+ S.Header.PointerToRawData = CurrentSectionDataOffset;
+ CurrentSectionDataOffset += S.Header.SizeOfRawData;
+ if (!S.Relocations.empty()) {
+ S.Header.PointerToRelocations = CurrentSectionDataOffset;
+ S.Header.NumberOfRelocations = S.Relocations.size();
+ CurrentSectionDataOffset +=
+ S.Header.NumberOfRelocations * COFF::RelocationSize;
+ }
+ } else {
+ // Leave SizeOfRawData unaltered. For .bss sections in object files, it
+ // carries the section size.
+ S.Header.PointerToRawData = 0;
+ }
+ }
+
+ uint32_t SymbolTableStart = CurrentSectionDataOffset;
+
+ // Calculate number of symbols.
+ uint32_t NumberOfSymbols = 0;
+ for (std::vector<COFFYAML::Symbol>::iterator i = CP.Obj.Symbols.begin(),
+ e = CP.Obj.Symbols.end();
+ i != e; ++i) {
+ uint32_t NumberOfAuxSymbols = 0;
+ if (i->FunctionDefinition)
+ NumberOfAuxSymbols += 1;
+ if (i->bfAndefSymbol)
+ NumberOfAuxSymbols += 1;
+ if (i->WeakExternal)
+ NumberOfAuxSymbols += 1;
+ if (!i->File.empty())
+ NumberOfAuxSymbols +=
+ (i->File.size() + CP.getSymbolSize() - 1) / CP.getSymbolSize();
+ if (i->SectionDefinition)
+ NumberOfAuxSymbols += 1;
+ if (i->CLRToken)
+ NumberOfAuxSymbols += 1;
+ i->Header.NumberOfAuxSymbols = NumberOfAuxSymbols;
+ NumberOfSymbols += 1 + NumberOfAuxSymbols;
+ }
+
+ // Store all the allocated start addresses in the header.
+ CP.Obj.Header.NumberOfSections = CP.Obj.Sections.size();
+ CP.Obj.Header.NumberOfSymbols = NumberOfSymbols;
+ if (NumberOfSymbols > 0 || CP.StringTable.size() > 4)
+ CP.Obj.Header.PointerToSymbolTable = SymbolTableStart;
+ else
+ CP.Obj.Header.PointerToSymbolTable = 0;
+
+ *reinterpret_cast<support::ulittle32_t *>(&CP.StringTable[0]) =
+ CP.StringTable.size();
+
+ return true;
+}
+
+template <typename value_type> struct binary_le_impl {
+ value_type Value;
+ binary_le_impl(value_type V) : Value(V) {}
+};
+
+template <typename value_type>
+raw_ostream &operator<<(raw_ostream &OS,
+ const binary_le_impl<value_type> &BLE) {
+ char Buffer[sizeof(BLE.Value)];
+ support::endian::write<value_type, support::little, support::unaligned>(
+ Buffer, BLE.Value);
+ OS.write(Buffer, sizeof(BLE.Value));
+ return OS;
+}
+
+template <typename value_type>
+binary_le_impl<value_type> binary_le(value_type V) {
+ return binary_le_impl<value_type>(V);
+}
+
+template <size_t NumBytes> struct zeros_impl {};
+
+template <size_t NumBytes>
+raw_ostream &operator<<(raw_ostream &OS, const zeros_impl<NumBytes> &) {
+ char Buffer[NumBytes];
+ memset(Buffer, 0, sizeof(Buffer));
+ OS.write(Buffer, sizeof(Buffer));
+ return OS;
+}
+
+template <typename T> zeros_impl<sizeof(T)> zeros(const T &) {
+ return zeros_impl<sizeof(T)>();
+}
+
+template <typename T>
+static uint32_t initializeOptionalHeader(COFFParser &CP, uint16_t Magic,
+ T Header) {
+ memset(Header, 0, sizeof(*Header));
+ Header->Magic = Magic;
+ Header->SectionAlignment = CP.Obj.OptionalHeader->Header.SectionAlignment;
+ Header->FileAlignment = CP.Obj.OptionalHeader->Header.FileAlignment;
+ uint32_t SizeOfCode = 0, SizeOfInitializedData = 0,
+ SizeOfUninitializedData = 0;
+ uint32_t SizeOfHeaders = alignTo(CP.SectionTableStart + CP.SectionTableSize,
+ Header->FileAlignment);
+ uint32_t SizeOfImage = alignTo(SizeOfHeaders, Header->SectionAlignment);
+ uint32_t BaseOfData = 0;
+ for (const COFFYAML::Section &S : CP.Obj.Sections) {
+ if (S.Header.Characteristics & COFF::IMAGE_SCN_CNT_CODE)
+ SizeOfCode += S.Header.SizeOfRawData;
+ if (S.Header.Characteristics & COFF::IMAGE_SCN_CNT_INITIALIZED_DATA)
+ SizeOfInitializedData += S.Header.SizeOfRawData;
+ if (S.Header.Characteristics & COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA)
+ SizeOfUninitializedData += S.Header.SizeOfRawData;
+ if (S.Name.equals(".text"))
+ Header->BaseOfCode = S.Header.VirtualAddress; // RVA
+ else if (S.Name.equals(".data"))
+ BaseOfData = S.Header.VirtualAddress; // RVA
+ if (S.Header.VirtualAddress)
+ SizeOfImage += alignTo(S.Header.VirtualSize, Header->SectionAlignment);
+ }
+ Header->SizeOfCode = SizeOfCode;
+ Header->SizeOfInitializedData = SizeOfInitializedData;
+ Header->SizeOfUninitializedData = SizeOfUninitializedData;
+ Header->AddressOfEntryPoint =
+ CP.Obj.OptionalHeader->Header.AddressOfEntryPoint; // RVA
+ Header->ImageBase = CP.Obj.OptionalHeader->Header.ImageBase;
+ Header->MajorOperatingSystemVersion =
+ CP.Obj.OptionalHeader->Header.MajorOperatingSystemVersion;
+ Header->MinorOperatingSystemVersion =
+ CP.Obj.OptionalHeader->Header.MinorOperatingSystemVersion;
+ Header->MajorImageVersion = CP.Obj.OptionalHeader->Header.MajorImageVersion;
+ Header->MinorImageVersion = CP.Obj.OptionalHeader->Header.MinorImageVersion;
+ Header->MajorSubsystemVersion =
+ CP.Obj.OptionalHeader->Header.MajorSubsystemVersion;
+ Header->MinorSubsystemVersion =
+ CP.Obj.OptionalHeader->Header.MinorSubsystemVersion;
+ Header->SizeOfImage = SizeOfImage;
+ Header->SizeOfHeaders = SizeOfHeaders;
+ Header->Subsystem = CP.Obj.OptionalHeader->Header.Subsystem;
+ Header->DLLCharacteristics = CP.Obj.OptionalHeader->Header.DLLCharacteristics;
+ Header->SizeOfStackReserve = CP.Obj.OptionalHeader->Header.SizeOfStackReserve;
+ Header->SizeOfStackCommit = CP.Obj.OptionalHeader->Header.SizeOfStackCommit;
+ Header->SizeOfHeapReserve = CP.Obj.OptionalHeader->Header.SizeOfHeapReserve;
+ Header->SizeOfHeapCommit = CP.Obj.OptionalHeader->Header.SizeOfHeapCommit;
+ Header->NumberOfRvaAndSize = COFF::NUM_DATA_DIRECTORIES + 1;
+ return BaseOfData;
+}
+
+static bool writeCOFF(COFFParser &CP, raw_ostream &OS) {
+ if (CP.isPE()) {
+ // PE files start with a DOS stub.
+ object::dos_header DH;
+ memset(&DH, 0, sizeof(DH));
+
+ // DOS EXEs start with "MZ" magic.
+ DH.Magic[0] = 'M';
+ DH.Magic[1] = 'Z';
+ // Initializing the AddressOfRelocationTable is strictly optional but
+ // mollifies certain tools which expect it to have a value greater than
+ // 0x40.
+ DH.AddressOfRelocationTable = sizeof(DH);
+ // This is the address of the PE signature.
+ DH.AddressOfNewExeHeader = DOSStubSize;
+
+ // Write out our DOS stub.
+ OS.write(reinterpret_cast<char *>(&DH), sizeof(DH));
+ // Write padding until we reach the position of where our PE signature
+ // should live.
+ OS.write_zeros(DOSStubSize - sizeof(DH));
+ // Write out the PE signature.
+ OS.write(COFF::PEMagic, sizeof(COFF::PEMagic));
+ }
+ if (CP.useBigObj()) {
+ OS << binary_le(static_cast<uint16_t>(COFF::IMAGE_FILE_MACHINE_UNKNOWN))
+ << binary_le(static_cast<uint16_t>(0xffff))
+ << binary_le(
+ static_cast<uint16_t>(COFF::BigObjHeader::MinBigObjectVersion))
+ << binary_le(CP.Obj.Header.Machine)
+ << binary_le(CP.Obj.Header.TimeDateStamp);
+ OS.write(COFF::BigObjMagic, sizeof(COFF::BigObjMagic));
+ OS << zeros(uint32_t(0)) << zeros(uint32_t(0)) << zeros(uint32_t(0))
+ << zeros(uint32_t(0)) << binary_le(CP.Obj.Header.NumberOfSections)
+ << binary_le(CP.Obj.Header.PointerToSymbolTable)
+ << binary_le(CP.Obj.Header.NumberOfSymbols);
+ } else {
+ OS << binary_le(CP.Obj.Header.Machine)
+ << binary_le(static_cast<int16_t>(CP.Obj.Header.NumberOfSections))
+ << binary_le(CP.Obj.Header.TimeDateStamp)
+ << binary_le(CP.Obj.Header.PointerToSymbolTable)
+ << binary_le(CP.Obj.Header.NumberOfSymbols)
+ << binary_le(CP.Obj.Header.SizeOfOptionalHeader)
+ << binary_le(CP.Obj.Header.Characteristics);
+ }
+ if (CP.isPE()) {
+ if (CP.is64Bit()) {
+ object::pe32plus_header PEH;
+ initializeOptionalHeader(CP, COFF::PE32Header::PE32_PLUS, &PEH);
+ OS.write(reinterpret_cast<char *>(&PEH), sizeof(PEH));
+ } else {
+ object::pe32_header PEH;
+ uint32_t BaseOfData =
+ initializeOptionalHeader(CP, COFF::PE32Header::PE32, &PEH);
+ PEH.BaseOfData = BaseOfData;
+ OS.write(reinterpret_cast<char *>(&PEH), sizeof(PEH));
+ }
+ for (const Optional<COFF::DataDirectory> &DD :
+ CP.Obj.OptionalHeader->DataDirectories) {
+ if (!DD.hasValue()) {
+ OS << zeros(uint32_t(0));
+ OS << zeros(uint32_t(0));
+ } else {
+ OS << binary_le(DD->RelativeVirtualAddress);
+ OS << binary_le(DD->Size);
+ }
+ }
+ OS << zeros(uint32_t(0));
+ OS << zeros(uint32_t(0));
+ }
+
+ assert(OS.tell() == CP.SectionTableStart);
+ // Output section table.
+ for (std::vector<COFFYAML::Section>::iterator i = CP.Obj.Sections.begin(),
+ e = CP.Obj.Sections.end();
+ i != e; ++i) {
+ OS.write(i->Header.Name, COFF::NameSize);
+ OS << binary_le(i->Header.VirtualSize)
+ << binary_le(i->Header.VirtualAddress)
+ << binary_le(i->Header.SizeOfRawData)
+ << binary_le(i->Header.PointerToRawData)
+ << binary_le(i->Header.PointerToRelocations)
+ << binary_le(i->Header.PointerToLineNumbers)
+ << binary_le(i->Header.NumberOfRelocations)
+ << binary_le(i->Header.NumberOfLineNumbers)
+ << binary_le(i->Header.Characteristics);
+ }
+ assert(OS.tell() == CP.SectionTableStart + CP.SectionTableSize);
+
+ unsigned CurSymbol = 0;
+ StringMap<unsigned> SymbolTableIndexMap;
+ for (std::vector<COFFYAML::Symbol>::iterator I = CP.Obj.Symbols.begin(),
+ E = CP.Obj.Symbols.end();
+ I != E; ++I) {
+ SymbolTableIndexMap[I->Name] = CurSymbol;
+ CurSymbol += 1 + I->Header.NumberOfAuxSymbols;
+ }
+
+ // Output section data.
+ for (const COFFYAML::Section &S : CP.Obj.Sections) {
+ if (S.Header.SizeOfRawData == 0 || S.Header.PointerToRawData == 0)
+ continue;
+ assert(S.Header.PointerToRawData >= OS.tell());
+ OS.write_zeros(S.Header.PointerToRawData - OS.tell());
+ S.SectionData.writeAsBinary(OS);
+ assert(S.Header.SizeOfRawData >= S.SectionData.binary_size());
+ OS.write_zeros(S.Header.SizeOfRawData - S.SectionData.binary_size());
+ for (const COFFYAML::Relocation &R : S.Relocations) {
+ uint32_t SymbolTableIndex;
+ if (R.SymbolTableIndex) {
+ if (!R.SymbolName.empty())
+ WithColor::error()
+ << "Both SymbolName and SymbolTableIndex specified\n";
+ SymbolTableIndex = *R.SymbolTableIndex;
+ } else {
+ SymbolTableIndex = SymbolTableIndexMap[R.SymbolName];
+ }
+ OS << binary_le(R.VirtualAddress) << binary_le(SymbolTableIndex)
+ << binary_le(R.Type);
+ }
+ }
+
+ // Output symbol table.
+
+ for (std::vector<COFFYAML::Symbol>::const_iterator i = CP.Obj.Symbols.begin(),
+ e = CP.Obj.Symbols.end();
+ i != e; ++i) {
+ OS.write(i->Header.Name, COFF::NameSize);
+ OS << binary_le(i->Header.Value);
+ if (CP.useBigObj())
+ OS << binary_le(i->Header.SectionNumber);
+ else
+ OS << binary_le(static_cast<int16_t>(i->Header.SectionNumber));
+ OS << binary_le(i->Header.Type) << binary_le(i->Header.StorageClass)
+ << binary_le(i->Header.NumberOfAuxSymbols);
+
+ if (i->FunctionDefinition) {
+ OS << binary_le(i->FunctionDefinition->TagIndex)
+ << binary_le(i->FunctionDefinition->TotalSize)
+ << binary_le(i->FunctionDefinition->PointerToLinenumber)
+ << binary_le(i->FunctionDefinition->PointerToNextFunction)
+ << zeros(i->FunctionDefinition->unused);
+ OS.write_zeros(CP.getSymbolSize() - COFF::Symbol16Size);
+ }
+ if (i->bfAndefSymbol) {
+ OS << zeros(i->bfAndefSymbol->unused1)
+ << binary_le(i->bfAndefSymbol->Linenumber)
+ << zeros(i->bfAndefSymbol->unused2)
+ << binary_le(i->bfAndefSymbol->PointerToNextFunction)
+ << zeros(i->bfAndefSymbol->unused3);
+ OS.write_zeros(CP.getSymbolSize() - COFF::Symbol16Size);
+ }
+ if (i->WeakExternal) {
+ OS << binary_le(i->WeakExternal->TagIndex)
+ << binary_le(i->WeakExternal->Characteristics)
+ << zeros(i->WeakExternal->unused);
+ OS.write_zeros(CP.getSymbolSize() - COFF::Symbol16Size);
+ }
+ if (!i->File.empty()) {
+ unsigned SymbolSize = CP.getSymbolSize();
+ uint32_t NumberOfAuxRecords =
+ (i->File.size() + SymbolSize - 1) / SymbolSize;
+ uint32_t NumberOfAuxBytes = NumberOfAuxRecords * SymbolSize;
+ uint32_t NumZeros = NumberOfAuxBytes - i->File.size();
+ OS.write(i->File.data(), i->File.size());
+ OS.write_zeros(NumZeros);
+ }
+ if (i->SectionDefinition) {
+ OS << binary_le(i->SectionDefinition->Length)
+ << binary_le(i->SectionDefinition->NumberOfRelocations)
+ << binary_le(i->SectionDefinition->NumberOfLinenumbers)
+ << binary_le(i->SectionDefinition->CheckSum)
+ << binary_le(static_cast<int16_t>(i->SectionDefinition->Number))
+ << binary_le(i->SectionDefinition->Selection)
+ << zeros(i->SectionDefinition->unused)
+ << binary_le(static_cast<int16_t>(i->SectionDefinition->Number >> 16));
+ OS.write_zeros(CP.getSymbolSize() - COFF::Symbol16Size);
+ }
+ if (i->CLRToken) {
+ OS << binary_le(i->CLRToken->AuxType) << zeros(i->CLRToken->unused1)
+ << binary_le(i->CLRToken->SymbolTableIndex)
+ << zeros(i->CLRToken->unused2);
+ OS.write_zeros(CP.getSymbolSize() - COFF::Symbol16Size);
+ }
+ }
+
+ // Output string table.
+ if (CP.Obj.Header.PointerToSymbolTable)
+ OS.write(&CP.StringTable[0], CP.StringTable.size());
+ return true;
+}
+
+namespace llvm {
+namespace yaml {
+
+int yaml2coff(llvm::COFFYAML::Object &Doc, raw_ostream &Out) {
+ COFFParser CP(Doc);
+ if (!CP.parse()) {
+ errs() << "yaml2obj: Failed to parse YAML file!\n";
+ return 1;
+ }
+
+ if (!layoutOptionalHeader(CP)) {
+ errs() << "yaml2obj: Failed to layout optional header for COFF file!\n";
+ return 1;
+ }
+
+ if (!layoutCOFF(CP)) {
+ errs() << "yaml2obj: Failed to layout COFF file!\n";
+ return 1;
+ }
+ if (!writeCOFF(CP, Out)) {
+ errs() << "yaml2obj: Failed to write COFF file!\n";
+ return 1;
+ }
+ return 0;
+}
+
+} // namespace yaml
+} // namespace llvm