58 lines · cpp
1//===- SymbolSerializer.cpp -----------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/DebugInfo/CodeView/SymbolSerializer.h"10#include "llvm/ADT/ArrayRef.h"11#include "llvm/Support/Error.h"12#include <cassert>13#include <cstdint>14#include <cstring>15 16using namespace llvm;17using namespace llvm::codeview;18 19SymbolSerializer::SymbolSerializer(BumpPtrAllocator &Allocator,20 CodeViewContainer Container)21 : Storage(Allocator), Stream(RecordBuffer, llvm::endianness::little),22 Writer(Stream), Mapping(Writer, Container) {}23 24Error SymbolSerializer::visitSymbolBegin(CVSymbol &Record) {25 assert(!CurrentSymbol && "Already in a symbol mapping!");26 27 Writer.setOffset(0);28 29 if (auto EC = writeRecordPrefix(Record.kind()))30 return EC;31 32 CurrentSymbol = Record.kind();33 if (auto EC = Mapping.visitSymbolBegin(Record))34 return EC;35 36 return Error::success();37}38 39Error SymbolSerializer::visitSymbolEnd(CVSymbol &Record) {40 assert(CurrentSymbol && "Not in a symbol mapping!");41 42 if (auto EC = Mapping.visitSymbolEnd(Record))43 return EC;44 45 uint32_t RecordEnd = Writer.getOffset();46 uint16_t Length = RecordEnd - 2;47 Writer.setOffset(0);48 if (auto EC = Writer.writeInteger(Length))49 return EC;50 51 uint8_t *StableStorage = Storage.Allocate<uint8_t>(RecordEnd);52 ::memcpy(StableStorage, &RecordBuffer[0], RecordEnd);53 Record.RecordData = ArrayRef<uint8_t>(StableStorage, RecordEnd);54 CurrentSymbol.reset();55 56 return Error::success();57}58