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4b665d2445
Previously extractors tried to be stateless with any additional context information needed in order to parse items being passed in via the extraction method. This led to quite cumbersome implementation challenges and awkwardness of use. This patch brings back support for stateful extractors, making the implementation and usage simpler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305093 91177308-0d34-0410-b5e6-96231b3b80d8
123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
//===- DebugInlineeLinesSubsection.cpp ------------------------*- C++-*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/CodeView/DebugInlineeLinesSubsection.h"
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#include "llvm/DebugInfo/CodeView/CodeViewError.h"
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#include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
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#include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
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#include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
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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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