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