120faca41b
This was reverted because it was breaking some builds, and because of incorrect error code usage. Since the CL was large and contained many different things, I'm resubmitting it in pieces. This portion is NFC, and consists of: 1) Renaming classes to follow a consistent naming convention. 2) Fixing the const-ness of the interface methods. 3) Adding detailed doxygen comments. 4) Fixing a few instances of passing `const BinaryStream& X`. These are now passed as `BinaryStreamRef X`. llvm-svn: 296394
86 lines
2.9 KiB
C++
86 lines
2.9 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/Native/ModStream.h"
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#include "llvm/ADT/iterator_range.h"
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#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
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#include "llvm/DebugInfo/MSF/BinaryStreamReader.h"
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#include "llvm/DebugInfo/MSF/BinaryStreamRef.h"
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#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
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#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
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#include "llvm/DebugInfo/PDB/Native/RawError.h"
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#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
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#include "llvm/Support/Error.h"
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#include <algorithm>
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#include <cstdint>
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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() = default;
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Error ModStream::reload() {
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BinaryStreamReader 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 make_error<RawError>(raw_error_code::corrupt_file,
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"Module has both C11 and C13 line info");
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BinaryStreamRef S;
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if (auto EC = Reader.readInteger(Signature, llvm::support::little))
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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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BinaryStreamReader 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, llvm::support::little))
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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 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 make_range(SymbolsSubstream.end(), SymbolsSubstream.end());
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return make_range(SymbolsSubstream.begin(HadError), 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 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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