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//===------ xcoff2yaml.cpp - XCOFF YAMLIO implementation --------*- 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 "obj2yaml.h"
#include "llvm/Object/XCOFFObjectFile.h"
#include "llvm/ObjectYAML/XCOFFYAML.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/YAMLTraits.h"
using namespace llvm;
using namespace llvm::object;
namespace {
class XCOFFDumper {
const object::XCOFFObjectFile &Obj;
XCOFFYAML::Object YAMLObj;
void dumpHeader();
Error dumpSections();
Error dumpSymbols();
template <typename Shdr, typename Reloc>
Error dumpSections(ArrayRef<Shdr> Sections);
public:
XCOFFDumper(const object::XCOFFObjectFile &obj) : Obj(obj) {}
Error dump();
XCOFFYAML::Object &getYAMLObj() { return YAMLObj; }
};
} // namespace
Error XCOFFDumper::dump() {
dumpHeader();
if (Error E = dumpSections())
return E;
return dumpSymbols();
}
void XCOFFDumper::dumpHeader() {
YAMLObj.Header.Magic = Obj.getMagic();
YAMLObj.Header.NumberOfSections = Obj.getNumberOfSections();
YAMLObj.Header.TimeStamp = Obj.getTimeStamp();
YAMLObj.Header.SymbolTableOffset = Obj.is64Bit()
? Obj.getSymbolTableOffset64()
: Obj.getSymbolTableOffset32();
YAMLObj.Header.NumberOfSymTableEntries =
Obj.is64Bit() ? Obj.getNumberOfSymbolTableEntries64()
: Obj.getRawNumberOfSymbolTableEntries32();
YAMLObj.Header.AuxHeaderSize = Obj.getOptionalHeaderSize();
YAMLObj.Header.Flags = Obj.getFlags();
}
Error XCOFFDumper::dumpSections() {
if (Obj.is64Bit())
return dumpSections<XCOFFSectionHeader64, XCOFFRelocation64>(
Obj.sections64());
return dumpSections<XCOFFSectionHeader32, XCOFFRelocation32>(
Obj.sections32());
}
template <typename Shdr, typename Reloc>
Error XCOFFDumper::dumpSections(ArrayRef<Shdr> Sections) {
std::vector<XCOFFYAML::Section> &YamlSections = YAMLObj.Sections;
for (const Shdr &S : Sections) {
XCOFFYAML::Section YamlSec;
YamlSec.SectionName = S.getName();
YamlSec.Address = S.PhysicalAddress;
YamlSec.Size = S.SectionSize;
YamlSec.NumberOfRelocations = S.NumberOfRelocations;
YamlSec.NumberOfLineNumbers = S.NumberOfLineNumbers;
YamlSec.FileOffsetToData = S.FileOffsetToRawData;
YamlSec.FileOffsetToRelocations = S.FileOffsetToRelocationInfo;
YamlSec.FileOffsetToLineNumbers = S.FileOffsetToLineNumberInfo;
YamlSec.Flags = S.Flags;
// Dump section data.
if (S.FileOffsetToRawData) {
DataRefImpl SectionDRI;
SectionDRI.p = reinterpret_cast<uintptr_t>(&S);
Expected<ArrayRef<uint8_t>> SecDataRefOrErr =
Obj.getSectionContents(SectionDRI);
if (!SecDataRefOrErr)
return SecDataRefOrErr.takeError();
YamlSec.SectionData = SecDataRefOrErr.get();
}
// Dump relocations.
if (S.NumberOfRelocations) {
auto RelRefOrErr = Obj.relocations<Shdr, Reloc>(S);
if (!RelRefOrErr)
return RelRefOrErr.takeError();
for (const Reloc &R : RelRefOrErr.get()) {
XCOFFYAML::Relocation YamlRel;
YamlRel.Type = R.Type;
YamlRel.Info = R.Info;
YamlRel.SymbolIndex = R.SymbolIndex;
YamlRel.VirtualAddress = R.VirtualAddress;
YamlSec.Relocations.push_back(YamlRel);
}
}
YamlSections.push_back(YamlSec);
}
return Error::success();
}
Error XCOFFDumper::dumpSymbols() {
std::vector<XCOFFYAML::Symbol> &Symbols = YAMLObj.Symbols;
for (const SymbolRef &S : Obj.symbols()) {
DataRefImpl SymbolDRI = S.getRawDataRefImpl();
const XCOFFSymbolRef SymbolEntRef = Obj.toSymbolRef(SymbolDRI);
XCOFFYAML::Symbol Sym;
Expected<StringRef> SymNameRefOrErr = Obj.getSymbolName(SymbolDRI);
if (!SymNameRefOrErr) {
return SymNameRefOrErr.takeError();
}
Sym.SymbolName = SymNameRefOrErr.get();
Sym.Value = SymbolEntRef.getValue();
Expected<StringRef> SectionNameRefOrErr =
Obj.getSymbolSectionName(SymbolEntRef);
if (!SectionNameRefOrErr)
return SectionNameRefOrErr.takeError();
Sym.SectionName = SectionNameRefOrErr.get();
Sym.Type = SymbolEntRef.getSymbolType();
Sym.StorageClass = SymbolEntRef.getStorageClass();
Sym.NumberOfAuxEntries = SymbolEntRef.getNumberOfAuxEntries();
Symbols.push_back(std::move(Sym));
}
return Error::success();
}
Error xcoff2yaml(raw_ostream &Out, const object::XCOFFObjectFile &Obj) {
XCOFFDumper Dumper(Obj);
if (Error E = Dumper.dump())
return E;
yaml::Output Yout(Out);
Yout << Dumper.getYAMLObj();
return Error::success();
}
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