1 //===- DebugFrameDataSubsection.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/DebugFrameDataSubsection.h" 11 #include "llvm/DebugInfo/CodeView/CodeViewError.h" 12 13 using namespace llvm; 14 using namespace llvm::codeview; 15 16 Error DebugFrameDataSubsectionRef::initialize(BinaryStreamReader Reader) { 17 if (Reader.bytesRemaining() % sizeof(FrameData) != 0) { 18 if (auto EC = Reader.readObject(RelocPtr)) 19 return EC; 20 } 21 22 if (Reader.bytesRemaining() % sizeof(FrameData) != 0) 23 return make_error<CodeViewError>(cv_error_code::corrupt_record, 24 "Invalid frame data record format!"); 25 26 uint32_t Count = Reader.bytesRemaining() / sizeof(FrameData); 27 if (auto EC = Reader.readArray(Frames, Count)) 28 return EC; 29 return Error::success(); 30 } 31 32 Error DebugFrameDataSubsectionRef::initialize(BinaryStreamRef Section) { 33 BinaryStreamReader Reader(Section); 34 return initialize(Reader); 35 } 36 37 uint32_t DebugFrameDataSubsection::calculateSerializedSize() const { 38 uint32_t Size = sizeof(FrameData) * Frames.size(); 39 if (IncludeRelocPtr) 40 Size += sizeof(uint32_t); 41 return Size; 42 } 43 44 Error DebugFrameDataSubsection::commit(BinaryStreamWriter &Writer) const { 45 if (IncludeRelocPtr) { 46 if (auto EC = Writer.writeInteger<uint32_t>(0)) 47 return EC; 48 } 49 50 std::vector<FrameData> SortedFrames(Frames.begin(), Frames.end()); 51 std::sort(SortedFrames.begin(), SortedFrames.end(), 52 [](const FrameData &LHS, const FrameData &RHS) { 53 return LHS.RvaStart < RHS.RvaStart; 54 }); 55 if (auto EC = Writer.writeArray(makeArrayRef(SortedFrames))) 56 return EC; 57 return Error::success(); 58 } 59 60 void DebugFrameDataSubsection::addFrameData(const FrameData &Frame) { 61 Frames.push_back(Frame); 62 } 63