126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
//===- DebugInlineeLinesSubsection.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/CodeView/DebugInlineeLinesSubsection.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/DebugInfo/CodeView/CodeView.h"
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#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
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#include "llvm/Support/BinaryStreamReader.h"
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#include "llvm/Support/BinaryStreamWriter.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/Error.h"
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#include <cassert>
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#include <cstdint>
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using namespace llvm;
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using namespace llvm::codeview;
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Error VarStreamArrayExtractor<InlineeSourceLine>::
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operator()(BinaryStreamRef Stream, uint32_t &Len, InlineeSourceLine &Item) {
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BinaryStreamReader Reader(Stream);
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if (auto EC = Reader.readObject(Item.Header))
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return EC;
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if (HasExtraFiles) {
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uint32_t ExtraFileCount;
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if (auto EC = Reader.readInteger(ExtraFileCount))
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return EC;
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if (auto EC = Reader.readArray(Item.ExtraFiles, ExtraFileCount))
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return EC;
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}
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Len = Reader.getOffset();
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return Error::success();
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}
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DebugInlineeLinesSubsectionRef::DebugInlineeLinesSubsectionRef()
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: DebugSubsectionRef(DebugSubsectionKind::InlineeLines) {}
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Error DebugInlineeLinesSubsectionRef::initialize(BinaryStreamReader Reader) {
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if (auto EC = Reader.readEnum(Signature))
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return EC;
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Lines.getExtractor().HasExtraFiles = hasExtraFiles();
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if (auto EC = Reader.readArray(Lines, Reader.bytesRemaining()))
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return EC;
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assert(Reader.bytesRemaining() == 0);
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return Error::success();
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}
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bool DebugInlineeLinesSubsectionRef::hasExtraFiles() const {
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return Signature == InlineeLinesSignature::ExtraFiles;
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}
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DebugInlineeLinesSubsection::DebugInlineeLinesSubsection(
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DebugChecksumsSubsection &Checksums, bool HasExtraFiles)
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: DebugSubsection(DebugSubsectionKind::InlineeLines), Checksums(Checksums),
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HasExtraFiles(HasExtraFiles) {}
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uint32_t DebugInlineeLinesSubsection::calculateSerializedSize() const {
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// 4 bytes for the signature
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uint32_t Size = sizeof(InlineeLinesSignature);
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// one header for each entry.
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Size += Entries.size() * sizeof(InlineeSourceLineHeader);
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if (HasExtraFiles) {
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// If extra files are enabled, one count for each entry.
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Size += Entries.size() * sizeof(uint32_t);
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// And one file id for each file.
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Size += ExtraFileCount * sizeof(uint32_t);
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}
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assert(Size % 4 == 0);
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return Size;
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}
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Error DebugInlineeLinesSubsection::commit(BinaryStreamWriter &Writer) const {
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InlineeLinesSignature Sig = InlineeLinesSignature::Normal;
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if (HasExtraFiles)
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Sig = InlineeLinesSignature::ExtraFiles;
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if (auto EC = Writer.writeEnum(Sig))
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return EC;
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for (const auto &E : Entries) {
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if (auto EC = Writer.writeObject(E.Header))
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return EC;
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if (!HasExtraFiles)
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continue;
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if (auto EC = Writer.writeInteger<uint32_t>(E.ExtraFiles.size()))
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return EC;
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if (auto EC = Writer.writeArray(makeArrayRef(E.ExtraFiles)))
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return EC;
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}
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return Error::success();
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}
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void DebugInlineeLinesSubsection::addExtraFile(StringRef FileName) {
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uint32_t Offset = Checksums.mapChecksumOffset(FileName);
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auto &Entry = Entries.back();
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Entry.ExtraFiles.push_back(ulittle32_t(Offset));
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++ExtraFileCount;
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}
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void DebugInlineeLinesSubsection::addInlineSite(TypeIndex FuncId,
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StringRef FileName,
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uint32_t SourceLine) {
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uint32_t Offset = Checksums.mapChecksumOffset(FileName);
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Entries.emplace_back();
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auto &Entry = Entries.back();
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Entry.Header.FileID = Offset;
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Entry.Header.SourceLineNum = SourceLine;
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Entry.Header.Inlinee = FuncId;
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}
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