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8c099fe06e
This is more concise, and matches the terminology used in other parts of the codebase more closely. llvm-svn: 304218
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
//===- DebugSubsectionRecord.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/DebugSubsectionRecord.h"
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#include "llvm/DebugInfo/CodeView/DebugSubsection.h"
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#include "llvm/Support/BinaryStreamReader.h"
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using namespace llvm;
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using namespace llvm::codeview;
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DebugSubsectionRecord::DebugSubsectionRecord()
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: Kind(DebugSubsectionKind::None) {}
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DebugSubsectionRecord::DebugSubsectionRecord(DebugSubsectionKind Kind,
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BinaryStreamRef Data)
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: Kind(Kind), Data(Data) {}
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Error DebugSubsectionRecord::initialize(BinaryStreamRef Stream,
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DebugSubsectionRecord &Info) {
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const DebugSubsectionHeader *Header;
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BinaryStreamReader Reader(Stream);
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if (auto EC = Reader.readObject(Header))
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return EC;
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DebugSubsectionKind Kind =
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static_cast<DebugSubsectionKind>(uint32_t(Header->Kind));
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switch (Kind) {
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case DebugSubsectionKind::FileChecksums:
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case DebugSubsectionKind::Lines:
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case DebugSubsectionKind::InlineeLines:
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break;
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default:
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llvm_unreachable("Unexpected debug fragment kind!");
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}
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if (auto EC = Reader.readStreamRef(Info.Data, Header->Length))
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return EC;
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Info.Kind = Kind;
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return Error::success();
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}
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uint32_t DebugSubsectionRecord::getRecordLength() const {
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uint32_t Result = sizeof(DebugSubsectionHeader) + Data.getLength();
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assert(Result % 4 == 0);
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return Result;
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}
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DebugSubsectionKind DebugSubsectionRecord::kind() const { return Kind; }
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BinaryStreamRef DebugSubsectionRecord::getRecordData() const { return Data; }
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DebugSubsectionRecordBuilder::DebugSubsectionRecordBuilder(
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DebugSubsectionKind Kind, DebugSubsection &Frag)
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: Kind(Kind), Frag(Frag) {}
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uint32_t DebugSubsectionRecordBuilder::calculateSerializedLength() {
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uint32_t Size = sizeof(DebugSubsectionHeader) +
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alignTo(Frag.calculateSerializedLength(), 4);
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return Size;
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}
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Error DebugSubsectionRecordBuilder::commit(BinaryStreamWriter &Writer) {
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DebugSubsectionHeader Header;
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Header.Kind = uint32_t(Kind);
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Header.Length = calculateSerializedLength() - sizeof(DebugSubsectionHeader);
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if (auto EC = Writer.writeObject(Header))
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return EC;
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if (auto EC = Frag.commit(Writer))
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return EC;
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if (auto EC = Writer.padToAlignment(4))
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return EC;
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return Error::success();
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}
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