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120 lines
3.8 KiB
C++
120 lines
3.8 KiB
C++
//===------ utils/obj2yaml.cpp - obj2yaml conversion tool -------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "obj2yaml.h"
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#include "llvm/Object/COFF.h"
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#include "llvm/Object/COFFYAML.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/YAMLTraits.h"
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using namespace llvm;
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namespace {
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class COFFDumper {
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const object::COFFObjectFile &Obj;
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COFFYAML::Object YAMLObj;
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void dumpHeader(const object::coff_file_header *Header);
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void dumpSections(unsigned numSections);
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void dumpSymbols(unsigned numSymbols);
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public:
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COFFDumper(const object::COFFObjectFile &Obj);
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COFFYAML::Object &getYAMLObj();
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};
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}
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static void check(error_code ec) {
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if (ec)
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report_fatal_error(ec.message());
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}
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COFFDumper::COFFDumper(const object::COFFObjectFile &Obj) : Obj(Obj) {
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const object::coff_file_header *Header;
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check(Obj.getCOFFHeader(Header));
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dumpHeader(Header);
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dumpSections(Header->NumberOfSections);
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dumpSymbols(Header->NumberOfSymbols);
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}
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void COFFDumper::dumpHeader(const object::coff_file_header *Header) {
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YAMLObj.Header.Machine = Header->Machine;
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YAMLObj.Header.Characteristics = Header->Characteristics;
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}
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void COFFDumper::dumpSections(unsigned NumSections) {
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std::vector<COFFYAML::Section> &Sections = YAMLObj.Sections;
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error_code ec;
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for (object::section_iterator iter = Obj.begin_sections();
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iter != Obj.end_sections(); iter.increment(ec)) {
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check(ec);
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const object::coff_section *Sect = Obj.getCOFFSection(iter);
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COFFYAML::Section Sec;
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Sec.Name = Sect->Name; // FIXME: check the null termination!
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uint32_t Characteristics = Sect->Characteristics;
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Sec.Header.Characteristics = Characteristics;
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Sec.Alignment = 1 << (((Characteristics >> 20) & 0xf) - 1);
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ArrayRef<uint8_t> sectionData;
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Obj.getSectionContents(Sect, sectionData);
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Sec.SectionData = object::yaml::BinaryRef(sectionData);
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std::vector<COFFYAML::Relocation> Relocations;
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for (object::relocation_iterator rIter = iter->begin_relocations();
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rIter != iter->end_relocations(); rIter.increment(ec)) {
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const object::coff_relocation *reloc = Obj.getCOFFRelocation(rIter);
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COFFYAML::Relocation Rel;
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object::symbol_iterator Sym = rIter->getSymbol();
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Sym->getName(Rel.SymbolName);
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Rel.VirtualAddress = reloc->VirtualAddress;
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Rel.Type = reloc->Type;
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Relocations.push_back(Rel);
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}
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Sec.Relocations = Relocations;
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Sections.push_back(Sec);
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}
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}
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void COFFDumper::dumpSymbols(unsigned NumSymbols) {
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error_code ec;
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std::vector<COFFYAML::Symbol> &Symbols = YAMLObj.Symbols;
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for (object::symbol_iterator iter = Obj.begin_symbols();
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iter != Obj.end_symbols(); iter.increment(ec)) {
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check(ec);
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const object::coff_symbol *Symbol = Obj.getCOFFSymbol(iter);
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COFFYAML::Symbol Sym;
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Obj.getSymbolName(Symbol, Sym.Name);
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Sym.SimpleType = COFF::SymbolBaseType(Symbol->getBaseType());
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Sym.ComplexType = COFF::SymbolComplexType(Symbol->getComplexType());
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Sym.Header.StorageClass = Symbol->StorageClass;
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Sym.Header.Value = Symbol->Value;
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Sym.Header.SectionNumber = Symbol->SectionNumber;
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Sym.Header.NumberOfAuxSymbols = Symbol->NumberOfAuxSymbols;
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Sym.AuxiliaryData = object::yaml::BinaryRef(Obj.getSymbolAuxData(Symbol));
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Symbols.push_back(Sym);
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}
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}
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COFFYAML::Object &COFFDumper::getYAMLObj() {
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return YAMLObj;
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}
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error_code coff2yaml(raw_ostream &Out, MemoryBuffer *Buff) {
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error_code ec;
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object::COFFObjectFile Obj(Buff, ec);
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check(ec);
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COFFDumper Dumper(Obj);
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yaml::Output Yout(Out);
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Yout << Dumper.getYAMLObj();
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return object::object_error::success;
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}
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