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