d5d37dcf83
We have need to reuse this functionality, including making additional generic stream types that are smarter about how and when they copy memory versus referencing the original memory. So all of these structures belong in the common library rather than being pdb specific. llvm-svn: 270751
57 lines
1.9 KiB
C++
57 lines
1.9 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/Raw/ModStream.h"
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#include "llvm/DebugInfo/CodeView/StreamReader.h"
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#include "llvm/DebugInfo/PDB/Raw/ModInfo.h"
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#include "llvm/DebugInfo/PDB/Raw/RawError.h"
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using namespace llvm;
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using namespace llvm::pdb;
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ModStream::ModStream(PDBFile &File, const ModInfo &Module)
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: Mod(Module), Stream(Module.getModuleStreamIndex(), File) {}
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ModStream::~ModStream() {}
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Error ModStream::reload() {
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codeview::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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if (auto EC = SymbolsSubstream.initialize(Reader, SymbolSize))
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return EC;
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if (auto EC = LinesSubstream.initialize(Reader, C11Size))
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return EC;
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if (auto EC = C13LinesSubstream.initialize(Reader, C13Size))
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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 = GlobalRefsSubstream.initialize(Reader, 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::SymbolIterator> ModStream::symbols() const {
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return codeview::makeSymbolRange(SymbolsSubstream.data().slice(4), nullptr);
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}
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