3a9a23ae62
This reduces the amount of memory used by llvm-pdbdump by roughly 1/3 of the size of the PDB file. Differential Revision: http://reviews.llvm.org/D20724 Reviewed By: ruiu llvm-svn: 271025
64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
//===- ModStream.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/Raw/ModStream.h"
|
|
|
|
#include "llvm/DebugInfo/CodeView/RecordIterator.h"
|
|
#include "llvm/DebugInfo/CodeView/StreamReader.h"
|
|
#include "llvm/DebugInfo/PDB/Raw/ModInfo.h"
|
|
#include "llvm/DebugInfo/PDB/Raw/RawError.h"
|
|
|
|
using namespace llvm;
|
|
using namespace llvm::pdb;
|
|
|
|
ModStream::ModStream(PDBFile &File, const ModInfo &Module)
|
|
: Mod(Module), Stream(Module.getModuleStreamIndex(), File) {}
|
|
|
|
ModStream::~ModStream() {}
|
|
|
|
Error ModStream::reload() {
|
|
codeview::StreamReader Reader(Stream);
|
|
|
|
uint32_t SymbolSize = Mod.getSymbolDebugInfoByteSize();
|
|
uint32_t C11Size = Mod.getLineInfoByteSize();
|
|
uint32_t C13Size = Mod.getC13LineInfoByteSize();
|
|
|
|
if (C11Size > 0 && C13Size > 0)
|
|
return llvm::make_error<RawError>(raw_error_code::corrupt_file,
|
|
"Module has both C11 and C13 line info");
|
|
|
|
codeview::StreamRef S;
|
|
|
|
uint32_t SymbolSubstreamSig = 0;
|
|
if (auto EC = Reader.readInteger(SymbolSubstreamSig))
|
|
return EC;
|
|
if (auto EC = Reader.readArray(SymbolsSubstream, SymbolSize - 4))
|
|
return EC;
|
|
|
|
if (auto EC = Reader.readStreamRef(LinesSubstream, C11Size))
|
|
return EC;
|
|
if (auto EC = Reader.readStreamRef(C13LinesSubstream, C13Size))
|
|
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 llvm::make_error<RawError>(raw_error_code::corrupt_file,
|
|
"Unexpected bytes in module stream.");
|
|
|
|
return Error::success();
|
|
}
|
|
|
|
iterator_range<codeview::CVSymbolArray::Iterator> ModStream::symbols() const {
|
|
return llvm::make_range(SymbolsSubstream.begin(), SymbolsSubstream.end());
|
|
}
|