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ModStream.cpp
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ModStream.cpp
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//===- 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/PDB/Raw/ModInfo.h"
#include "llvm/DebugInfo/PDB/Raw/RawError.h"
#include "llvm/DebugInfo/PDB/Raw/StreamReader.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() {
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");
if (auto EC = SymbolsSubstream.initialize(Reader, SymbolSize))
return EC;
if (auto EC = LinesSubstream.initialize(Reader, C11Size))
return EC;
if (auto EC = C13LinesSubstream.initialize(Reader, C13Size))
return EC;
uint32_t GlobalRefsSize;
if (auto EC = Reader.readInteger(GlobalRefsSize))
return EC;
if (auto EC = GlobalRefsSubstream.initialize(Reader, 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::SymbolIterator> ModStream::symbols() const {
return codeview::makeSymbolRange(SymbolsSubstream.data().slice(4));
}