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00ea544948
Previously we could round-trip type records from PDB -> Yaml -> PDB, but for symbols we could only go from PDB -> Yaml. This completes the round-tripping for symbols as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297625 91177308-0d34-0410-b5e6-96231b3b80d8
53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
//===- SymbolSerializer.cpp -------------------------------------*- C++ -*-===//
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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/CodeView/SymbolSerializer.h"
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using namespace llvm;
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using namespace llvm::codeview;
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SymbolSerializer::SymbolSerializer(BumpPtrAllocator &Allocator)
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: Storage(Allocator), RecordBuffer(MaxRecordLength), Stream(RecordBuffer, llvm::support::little),
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Writer(Stream), Mapping(Writer) { }
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Error SymbolSerializer::visitSymbolBegin(CVSymbol &Record) {
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assert(!CurrentSymbol.hasValue() && "Already in a symbol mapping!");
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Writer.setOffset(0);
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if (auto EC = writeRecordPrefix(Record.kind()))
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return EC;
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CurrentSymbol = Record.kind();
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if (auto EC = Mapping.visitSymbolBegin(Record))
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return EC;
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return Error::success();
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}
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Error SymbolSerializer::visitSymbolEnd(CVSymbol &Record) {
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assert(CurrentSymbol.hasValue() && "Not in a symbol mapping!");
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if (auto EC = Mapping.visitSymbolEnd(Record))
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return EC;
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uint32_t RecordEnd = Writer.getOffset();
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uint16_t Length = RecordEnd - 2;
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Writer.setOffset(0);
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if (auto EC = Writer.writeInteger(Length))
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return EC;
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uint8_t *StableStorage = Storage.Allocate<uint8_t>(RecordEnd);
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::memcpy(StableStorage, &RecordBuffer[0], RecordEnd);
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Record.RecordData = ArrayRef<uint8_t>(StableStorage, RecordEnd);
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CurrentSymbol.reset();
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return Error::success();
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}
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