bac69d33d0
This provides a better layering of responsibilities among different aspects of PDB writing code. Some of the MSF related code was contained in CodeView, and some was in PDB prior to this. Further, we were often saying PDB when we meant MSF, and the two are actually independent of each other since in theory you can have other types of data besides PDB data in an MSF. So, this patch separates the MSF specific code into its own library, with no dependencies on anything else, and DebugInfoCodeView and DebugInfoPDB take dependencies on DebugInfoMsf. llvm-svn: 276458
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
//===- ModStream.cpp - PDB Module Info Stream Access ----------------------===//
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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 "llvm/DebugInfo/PDB/Raw/ModStream.h"
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#include "llvm/DebugInfo/Msf/IndexedStreamData.h"
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#include "llvm/DebugInfo/Msf/StreamReader.h"
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#include "llvm/DebugInfo/PDB/Raw/ModInfo.h"
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#include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
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#include "llvm/DebugInfo/PDB/Raw/RawError.h"
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#include "llvm/DebugInfo/PDB/Raw/RawTypes.h"
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using namespace llvm;
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using namespace llvm::msf;
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using namespace llvm::pdb;
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ModStream::ModStream(const ModInfo &Module,
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std::unique_ptr<MappedBlockStream> Stream)
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: Mod(Module), Stream(std::move(Stream)) {}
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ModStream::~ModStream() {}
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Error ModStream::reload() {
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StreamReader Reader(*Stream);
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uint32_t SymbolSize = Mod.getSymbolDebugInfoByteSize();
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uint32_t C11Size = Mod.getLineInfoByteSize();
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uint32_t C13Size = Mod.getC13LineInfoByteSize();
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if (C11Size > 0 && C13Size > 0)
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return llvm::make_error<RawError>(raw_error_code::corrupt_file,
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"Module has both C11 and C13 line info");
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StreamRef S;
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uint32_t SymbolSubstreamSig = 0;
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if (auto EC = Reader.readInteger(SymbolSubstreamSig))
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return EC;
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if (auto EC = Reader.readArray(SymbolsSubstream, SymbolSize - 4))
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return EC;
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if (auto EC = Reader.readStreamRef(LinesSubstream, C11Size))
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return EC;
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if (auto EC = Reader.readStreamRef(C13LinesSubstream, C13Size))
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return EC;
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StreamReader LineReader(C13LinesSubstream);
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if (auto EC = LineReader.readArray(LineInfo, LineReader.bytesRemaining()))
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return EC;
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uint32_t GlobalRefsSize;
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if (auto EC = Reader.readInteger(GlobalRefsSize))
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return EC;
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if (auto EC = Reader.readStreamRef(GlobalRefsSubstream, GlobalRefsSize))
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return EC;
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if (Reader.bytesRemaining() > 0)
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return llvm::make_error<RawError>(raw_error_code::corrupt_file,
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"Unexpected bytes in module stream.");
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return Error::success();
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}
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iterator_range<codeview::CVSymbolArray::Iterator>
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ModStream::symbols(bool *HadError) const {
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// It's OK if the stream is empty.
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if (SymbolsSubstream.getUnderlyingStream().getLength() == 0)
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return llvm::make_range(SymbolsSubstream.end(), SymbolsSubstream.end());
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return llvm::make_range(SymbolsSubstream.begin(HadError),
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SymbolsSubstream.end());
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}
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iterator_range<codeview::ModuleSubstreamArray::Iterator>
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ModStream::lines(bool *HadError) const {
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return llvm::make_range(LineInfo.begin(HadError), LineInfo.end());
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}
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Error ModStream::commit() { return Error::success(); }
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