1 //===- DebugInlineeLinesSubsection.cpp ------------------------*- C++-*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm/DebugInfo/CodeView/DebugInlineeLinesSubsection.h" 11 12 #include "llvm/DebugInfo/CodeView/CodeViewError.h" 13 #include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h" 14 #include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h" 15 #include "llvm/DebugInfo/CodeView/StringTable.h" 16 17 using namespace llvm; 18 using namespace llvm::codeview; 19 20 Error VarStreamArrayExtractor<InlineeSourceLine>::extract( 21 BinaryStreamRef Stream, uint32_t &Len, InlineeSourceLine &Item, 22 bool HasExtraFiles) { 23 BinaryStreamReader Reader(Stream); 24 25 if (auto EC = Reader.readObject(Item.Header)) 26 return EC; 27 28 if (HasExtraFiles) { 29 uint32_t ExtraFileCount; 30 if (auto EC = Reader.readInteger(ExtraFileCount)) 31 return EC; 32 if (auto EC = Reader.readArray(Item.ExtraFiles, ExtraFileCount)) 33 return EC; 34 } 35 36 Len = Reader.getOffset(); 37 return Error::success(); 38 } 39 40 DebugInlineeLinesSubsectionRef::DebugInlineeLinesSubsectionRef() 41 : DebugSubsectionRef(DebugSubsectionKind::InlineeLines) {} 42 43 Error DebugInlineeLinesSubsectionRef::initialize(BinaryStreamReader Reader) { 44 if (auto EC = Reader.readEnum(Signature)) 45 return EC; 46 47 if (auto EC = 48 Reader.readArray(Lines, Reader.bytesRemaining(), hasExtraFiles())) 49 return EC; 50 51 assert(Reader.bytesRemaining() == 0); 52 return Error::success(); 53 } 54 55 bool DebugInlineeLinesSubsectionRef::hasExtraFiles() const { 56 return Signature == InlineeLinesSignature::ExtraFiles; 57 } 58 59 DebugInlineeLinesSubsection::DebugInlineeLinesSubsection( 60 DebugChecksumsSubsection &Checksums, bool HasExtraFiles) 61 : DebugSubsection(DebugSubsectionKind::InlineeLines), Checksums(Checksums), 62 HasExtraFiles(HasExtraFiles) {} 63 64 uint32_t DebugInlineeLinesSubsection::calculateSerializedLength() { 65 // 4 bytes for the signature 66 uint32_t Size = sizeof(InlineeLinesSignature); 67 68 // one header for each entry. 69 Size += Entries.size() * sizeof(InlineeSourceLineHeader); 70 if (HasExtraFiles) { 71 // If extra files are enabled, one count for each entry. 72 Size += Entries.size() * sizeof(uint32_t); 73 74 // And one file id for each file. 75 Size += ExtraFileCount * sizeof(uint32_t); 76 } 77 assert(Size % 4 == 0); 78 return Size; 79 } 80 81 Error DebugInlineeLinesSubsection::commit(BinaryStreamWriter &Writer) { 82 InlineeLinesSignature Sig = InlineeLinesSignature::Normal; 83 if (HasExtraFiles) 84 Sig = InlineeLinesSignature::ExtraFiles; 85 86 if (auto EC = Writer.writeEnum(Sig)) 87 return EC; 88 89 for (const auto &E : Entries) { 90 if (auto EC = Writer.writeObject(E.Header)) 91 return EC; 92 93 if (!HasExtraFiles) 94 continue; 95 96 if (auto EC = Writer.writeInteger<uint32_t>(E.ExtraFiles.size())) 97 return EC; 98 if (auto EC = Writer.writeArray(makeArrayRef(E.ExtraFiles))) 99 return EC; 100 } 101 102 return Error::success(); 103 } 104 105 void DebugInlineeLinesSubsection::addExtraFile(StringRef FileName) { 106 uint32_t Offset = Checksums.mapChecksumOffset(FileName); 107 108 auto &Entry = Entries.back(); 109 Entry.ExtraFiles.push_back(ulittle32_t(Offset)); 110 ++ExtraFileCount; 111 } 112 113 void DebugInlineeLinesSubsection::addInlineSite(TypeIndex FuncId, 114 StringRef FileName, 115 uint32_t SourceLine) { 116 uint32_t Offset = Checksums.mapChecksumOffset(FileName); 117 118 Entries.emplace_back(); 119 auto &Entry = Entries.back(); 120 Entry.Header.FileID = Offset; 121 Entry.Header.SourceLineNum = SourceLine; 122 Entry.Header.Inlinee = FuncId; 123 } 124