1 //===- DebugFrameDataSubsection.cpp -----------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/DebugInfo/CodeView/DebugFrameDataSubsection.h" 10 #include "llvm/DebugInfo/CodeView/CodeViewError.h" 11 12 using namespace llvm; 13 using namespace llvm::codeview; 14 15 Error DebugFrameDataSubsectionRef::initialize(BinaryStreamReader Reader) { 16 if (Reader.bytesRemaining() % sizeof(FrameData) != 0) { 17 if (auto EC = Reader.readObject(RelocPtr)) 18 return EC; 19 } 20 21 if (Reader.bytesRemaining() % sizeof(FrameData) != 0) 22 return make_error<CodeViewError>(cv_error_code::corrupt_record, 23 "Invalid frame data record format!"); 24 25 uint32_t Count = Reader.bytesRemaining() / sizeof(FrameData); 26 if (auto EC = Reader.readArray(Frames, Count)) 27 return EC; 28 return Error::success(); 29 } 30 31 Error DebugFrameDataSubsectionRef::initialize(BinaryStreamRef Section) { 32 BinaryStreamReader Reader(Section); 33 return initialize(Reader); 34 } 35 36 uint32_t DebugFrameDataSubsection::calculateSerializedSize() const { 37 uint32_t Size = sizeof(FrameData) * Frames.size(); 38 if (IncludeRelocPtr) 39 Size += sizeof(uint32_t); 40 return Size; 41 } 42 43 Error DebugFrameDataSubsection::commit(BinaryStreamWriter &Writer) const { 44 if (IncludeRelocPtr) { 45 if (auto EC = Writer.writeInteger<uint32_t>(0)) 46 return EC; 47 } 48 49 std::vector<FrameData> SortedFrames(Frames.begin(), Frames.end()); 50 llvm::sort(SortedFrames, [](const FrameData &LHS, const FrameData &RHS) { 51 return LHS.RvaStart < RHS.RvaStart; 52 }); 53 if (auto EC = Writer.writeArray(makeArrayRef(SortedFrames))) 54 return EC; 55 return Error::success(); 56 } 57 58 void DebugFrameDataSubsection::addFrameData(const FrameData &Frame) { 59 Frames.push_back(Frame); 60 } 61