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//===- SymbolSerializer.cpp -----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/SymbolSerializer.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"
#include <cassert>
#include <cstdint>
#include <cstring>
using namespace llvm;
using namespace llvm::codeview;
SymbolSerializer::SymbolSerializer(BumpPtrAllocator &Allocator,
CodeViewContainer Container)
: Storage(Allocator), Stream(RecordBuffer, support::little), Writer(Stream),
Mapping(Writer, Container) {}
Error SymbolSerializer::visitSymbolBegin(CVSymbol &Record) {
assert(!CurrentSymbol.hasValue() && "Already in a symbol mapping!");
Writer.setOffset(0);
if (auto EC = writeRecordPrefix(Record.kind()))
return EC;
CurrentSymbol = Record.kind();
if (auto EC = Mapping.visitSymbolBegin(Record))
return EC;
return Error::success();
}
Error SymbolSerializer::visitSymbolEnd(CVSymbol &Record) {
assert(CurrentSymbol.hasValue() && "Not in a symbol mapping!");
if (auto EC = Mapping.visitSymbolEnd(Record))
return EC;
uint32_t RecordEnd = Writer.getOffset();
uint16_t Length = RecordEnd - 2;
Writer.setOffset(0);
if (auto EC = Writer.writeInteger(Length))
return EC;
uint8_t *StableStorage = Storage.Allocate<uint8_t>(RecordEnd);
::memcpy(StableStorage, &RecordBuffer[0], RecordEnd);
Record.RecordData = ArrayRef<uint8_t>(StableStorage, RecordEnd);
CurrentSymbol.reset();
return Error::success();
}
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