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 
initialize(BinaryStreamReader Reader)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 
initialize(BinaryStreamRef Section)31 Error DebugFrameDataSubsectionRef::initialize(BinaryStreamRef Section) {
32   BinaryStreamReader Reader(Section);
33   return initialize(Reader);
34 }
35 
calculateSerializedSize() const36 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 
commit(BinaryStreamWriter & Writer) const43 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   std::sort(SortedFrames.begin(), SortedFrames.end(),
51             [](const FrameData &LHS, const FrameData &RHS) {
52               return LHS.RvaStart < RHS.RvaStart;
53             });
54   if (auto EC = Writer.writeArray(makeArrayRef(SortedFrames)))
55     return EC;
56   return Error::success();
57 }
58 
addFrameData(const FrameData & Frame)59 void DebugFrameDataSubsection::addFrameData(const FrameData &Frame) {
60   Frames.push_back(Frame);
61 }
62