127 lines · cpp
1//===- DebugInlineeLinesSubsection.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/DebugInlineeLinesSubsection.h"10#include "llvm/ADT/ArrayRef.h"11#include "llvm/DebugInfo/CodeView/CodeView.h"12#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"13#include "llvm/DebugInfo/CodeView/RecordSerialization.h"14#include "llvm/Support/BinaryStreamReader.h"15#include "llvm/Support/BinaryStreamWriter.h"16#include "llvm/Support/Endian.h"17#include "llvm/Support/Error.h"18#include <cassert>19#include <cstdint>20 21using namespace llvm;22using namespace llvm::codeview;23 24Error VarStreamArrayExtractor<InlineeSourceLine>::25operator()(BinaryStreamRef Stream, uint32_t &Len, InlineeSourceLine &Item) {26 BinaryStreamReader Reader(Stream);27 28 if (auto EC = Reader.readObject(Item.Header))29 return EC;30 31 if (HasExtraFiles) {32 uint32_t ExtraFileCount;33 if (auto EC = Reader.readInteger(ExtraFileCount))34 return EC;35 if (auto EC = Reader.readArray(Item.ExtraFiles, ExtraFileCount))36 return EC;37 }38 39 Len = Reader.getOffset();40 return Error::success();41}42 43DebugInlineeLinesSubsectionRef::DebugInlineeLinesSubsectionRef()44 : DebugSubsectionRef(DebugSubsectionKind::InlineeLines) {}45 46Error DebugInlineeLinesSubsectionRef::initialize(BinaryStreamReader Reader) {47 if (auto EC = Reader.readEnum(Signature))48 return EC;49 50 Lines.getExtractor().HasExtraFiles = hasExtraFiles();51 if (auto EC = Reader.readArray(Lines, Reader.bytesRemaining()))52 return EC;53 54 assert(Reader.bytesRemaining() == 0);55 return Error::success();56}57 58bool DebugInlineeLinesSubsectionRef::hasExtraFiles() const {59 return Signature == InlineeLinesSignature::ExtraFiles;60}61 62DebugInlineeLinesSubsection::DebugInlineeLinesSubsection(63 DebugChecksumsSubsection &Checksums, bool HasExtraFiles)64 : DebugSubsection(DebugSubsectionKind::InlineeLines), Checksums(Checksums),65 HasExtraFiles(HasExtraFiles) {}66 67uint32_t DebugInlineeLinesSubsection::calculateSerializedSize() const {68 // 4 bytes for the signature69 uint32_t Size = sizeof(InlineeLinesSignature);70 71 // one header for each entry.72 Size += Entries.size() * sizeof(InlineeSourceLineHeader);73 if (HasExtraFiles) {74 // If extra files are enabled, one count for each entry.75 Size += Entries.size() * sizeof(uint32_t);76 77 // And one file id for each file.78 Size += ExtraFileCount * sizeof(uint32_t);79 }80 assert(Size % 4 == 0);81 return Size;82}83 84Error DebugInlineeLinesSubsection::commit(BinaryStreamWriter &Writer) const {85 InlineeLinesSignature Sig = InlineeLinesSignature::Normal;86 if (HasExtraFiles)87 Sig = InlineeLinesSignature::ExtraFiles;88 89 if (auto EC = Writer.writeEnum(Sig))90 return EC;91 92 for (const auto &E : Entries) {93 if (auto EC = Writer.writeObject(E.Header))94 return EC;95 96 if (!HasExtraFiles)97 continue;98 99 if (auto EC = Writer.writeInteger<uint32_t>(E.ExtraFiles.size()))100 return EC;101 if (auto EC = Writer.writeArray(ArrayRef(E.ExtraFiles)))102 return EC;103 }104 105 return Error::success();106}107 108void DebugInlineeLinesSubsection::addExtraFile(StringRef FileName) {109 uint32_t Offset = Checksums.mapChecksumOffset(FileName);110 111 auto &Entry = Entries.back();112 Entry.ExtraFiles.push_back(ulittle32_t(Offset));113 ++ExtraFileCount;114}115 116void DebugInlineeLinesSubsection::addInlineSite(TypeIndex FuncId,117 StringRef FileName,118 uint32_t SourceLine) {119 uint32_t Offset = Checksums.mapChecksumOffset(FileName);120 121 Entries.emplace_back();122 auto &Entry = Entries.back();123 Entry.Header.FileID = Offset;124 Entry.Header.SourceLineNum = SourceLine;125 Entry.Header.Inlinee = FuncId;126}127