forked from OSchip/llvm-project
104 lines
3.4 KiB
C++
104 lines
3.4 KiB
C++
//===- ModuleDebugStream.cpp - PDB Module Info Stream Access --------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/DebugInfo/PDB/Native/ModuleDebugStream.h"
|
|
#include "llvm/ADT/iterator_range.h"
|
|
#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
|
|
#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
|
|
#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
|
|
#include "llvm/DebugInfo/PDB/Native/RawError.h"
|
|
#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
|
|
#include "llvm/Support/BinaryStreamReader.h"
|
|
#include "llvm/Support/BinaryStreamRef.h"
|
|
#include "llvm/Support/Error.h"
|
|
#include <algorithm>
|
|
#include <cstdint>
|
|
|
|
using namespace llvm;
|
|
using namespace llvm::codeview;
|
|
using namespace llvm::msf;
|
|
using namespace llvm::pdb;
|
|
|
|
ModuleDebugStreamRef::ModuleDebugStreamRef(
|
|
const DbiModuleDescriptor &Module,
|
|
std::unique_ptr<MappedBlockStream> Stream)
|
|
: Mod(Module), Stream(std::move(Stream)) {}
|
|
|
|
ModuleDebugStreamRef::~ModuleDebugStreamRef() = default;
|
|
|
|
Error ModuleDebugStreamRef::reload() {
|
|
BinaryStreamReader Reader(*Stream);
|
|
|
|
uint32_t SymbolSize = Mod.getSymbolDebugInfoByteSize();
|
|
uint32_t C11Size = Mod.getC11LineInfoByteSize();
|
|
uint32_t C13Size = Mod.getC13LineInfoByteSize();
|
|
|
|
if (C11Size > 0 && C13Size > 0)
|
|
return make_error<RawError>(raw_error_code::corrupt_file,
|
|
"Module has both C11 and C13 line info");
|
|
|
|
BinaryStreamRef S;
|
|
|
|
if (auto EC = Reader.readInteger(Signature))
|
|
return EC;
|
|
if (auto EC = Reader.readArray(SymbolsSubstream, SymbolSize - 4))
|
|
return EC;
|
|
|
|
if (auto EC = Reader.readStreamRef(C11LinesSubstream, C11Size))
|
|
return EC;
|
|
if (auto EC = Reader.readStreamRef(C13LinesSubstream, C13Size))
|
|
return EC;
|
|
|
|
BinaryStreamReader SubsectionsReader(C13LinesSubstream);
|
|
if (auto EC = SubsectionsReader.readArray(Subsections,
|
|
SubsectionsReader.bytesRemaining()))
|
|
return EC;
|
|
|
|
uint32_t GlobalRefsSize;
|
|
if (auto EC = Reader.readInteger(GlobalRefsSize))
|
|
return EC;
|
|
if (auto EC = Reader.readStreamRef(GlobalRefsSubstream, GlobalRefsSize))
|
|
return EC;
|
|
if (Reader.bytesRemaining() > 0)
|
|
return make_error<RawError>(raw_error_code::corrupt_file,
|
|
"Unexpected bytes in module stream.");
|
|
|
|
return Error::success();
|
|
}
|
|
|
|
iterator_range<codeview::CVSymbolArray::Iterator>
|
|
ModuleDebugStreamRef::symbols(bool *HadError) const {
|
|
return make_range(SymbolsSubstream.begin(HadError), SymbolsSubstream.end());
|
|
}
|
|
|
|
llvm::iterator_range<ModuleDebugStreamRef::DebugSubsectionIterator>
|
|
ModuleDebugStreamRef::subsections() const {
|
|
return make_range(Subsections.begin(), Subsections.end());
|
|
}
|
|
|
|
bool ModuleDebugStreamRef::hasDebugSubsections() const {
|
|
return C13LinesSubstream.getLength() > 0;
|
|
}
|
|
|
|
Error ModuleDebugStreamRef::commit() { return Error::success(); }
|
|
|
|
Expected<codeview::DebugChecksumsSubsectionRef>
|
|
ModuleDebugStreamRef::findChecksumsSubsection() const {
|
|
codeview::DebugChecksumsSubsectionRef Result;
|
|
for (const auto &SS : subsections()) {
|
|
if (SS.kind() != DebugSubsectionKind::FileChecksums)
|
|
continue;
|
|
|
|
if (auto EC = Result.initialize(SS.getRecordData()))
|
|
return std::move(EC);
|
|
return Result;
|
|
}
|
|
return Result;
|
|
}
|