1*0b57cec5SDimitry Andric //===- SymbolSerializer.cpp -----------------------------------------------===// 2*0b57cec5SDimitry Andric // 3*0b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0b57cec5SDimitry Andric // 7*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===// 8*0b57cec5SDimitry Andric 9*0b57cec5SDimitry Andric #include "llvm/DebugInfo/CodeView/SymbolSerializer.h" 10*0b57cec5SDimitry Andric #include "llvm/ADT/ArrayRef.h" 11*0b57cec5SDimitry Andric #include "llvm/DebugInfo/CodeView/SymbolRecord.h" 12*0b57cec5SDimitry Andric #include "llvm/Support/Endian.h" 13*0b57cec5SDimitry Andric #include "llvm/Support/Error.h" 14*0b57cec5SDimitry Andric #include <cassert> 15*0b57cec5SDimitry Andric #include <cstdint> 16*0b57cec5SDimitry Andric #include <cstring> 17*0b57cec5SDimitry Andric 18*0b57cec5SDimitry Andric using namespace llvm; 19*0b57cec5SDimitry Andric using namespace llvm::codeview; 20*0b57cec5SDimitry Andric 21*0b57cec5SDimitry Andric SymbolSerializer::SymbolSerializer(BumpPtrAllocator &Allocator, 22*0b57cec5SDimitry Andric CodeViewContainer Container) 23*0b57cec5SDimitry Andric : Storage(Allocator), Stream(RecordBuffer, support::little), Writer(Stream), 24*0b57cec5SDimitry Andric Mapping(Writer, Container) {} 25*0b57cec5SDimitry Andric 26*0b57cec5SDimitry Andric Error SymbolSerializer::visitSymbolBegin(CVSymbol &Record) { 27*0b57cec5SDimitry Andric assert(!CurrentSymbol.hasValue() && "Already in a symbol mapping!"); 28*0b57cec5SDimitry Andric 29*0b57cec5SDimitry Andric Writer.setOffset(0); 30*0b57cec5SDimitry Andric 31*0b57cec5SDimitry Andric if (auto EC = writeRecordPrefix(Record.kind())) 32*0b57cec5SDimitry Andric return EC; 33*0b57cec5SDimitry Andric 34*0b57cec5SDimitry Andric CurrentSymbol = Record.kind(); 35*0b57cec5SDimitry Andric if (auto EC = Mapping.visitSymbolBegin(Record)) 36*0b57cec5SDimitry Andric return EC; 37*0b57cec5SDimitry Andric 38*0b57cec5SDimitry Andric return Error::success(); 39*0b57cec5SDimitry Andric } 40*0b57cec5SDimitry Andric 41*0b57cec5SDimitry Andric Error SymbolSerializer::visitSymbolEnd(CVSymbol &Record) { 42*0b57cec5SDimitry Andric assert(CurrentSymbol.hasValue() && "Not in a symbol mapping!"); 43*0b57cec5SDimitry Andric 44*0b57cec5SDimitry Andric if (auto EC = Mapping.visitSymbolEnd(Record)) 45*0b57cec5SDimitry Andric return EC; 46*0b57cec5SDimitry Andric 47*0b57cec5SDimitry Andric uint32_t RecordEnd = Writer.getOffset(); 48*0b57cec5SDimitry Andric uint16_t Length = RecordEnd - 2; 49*0b57cec5SDimitry Andric Writer.setOffset(0); 50*0b57cec5SDimitry Andric if (auto EC = Writer.writeInteger(Length)) 51*0b57cec5SDimitry Andric return EC; 52*0b57cec5SDimitry Andric 53*0b57cec5SDimitry Andric uint8_t *StableStorage = Storage.Allocate<uint8_t>(RecordEnd); 54*0b57cec5SDimitry Andric ::memcpy(StableStorage, &RecordBuffer[0], RecordEnd); 55*0b57cec5SDimitry Andric Record.RecordData = ArrayRef<uint8_t>(StableStorage, RecordEnd); 56*0b57cec5SDimitry Andric CurrentSymbol.reset(); 57*0b57cec5SDimitry Andric 58*0b57cec5SDimitry Andric return Error::success(); 59*0b57cec5SDimitry Andric } 60