1*0b57cec5SDimitry Andric //===- DebugFrameDataSubsection.cpp -----------------------------*- C++ -*-===//
2*0b57cec5SDimitry Andric //
3*0b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*0b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
5*0b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*0b57cec5SDimitry Andric //
7*0b57cec5SDimitry Andric //===----------------------------------------------------------------------===//
8*0b57cec5SDimitry Andric 
9*0b57cec5SDimitry Andric #include "llvm/DebugInfo/CodeView/DebugFrameDataSubsection.h"
10*0b57cec5SDimitry Andric #include "llvm/DebugInfo/CodeView/CodeViewError.h"
11*0b57cec5SDimitry Andric #include "llvm/Support/BinaryStreamReader.h"
12*0b57cec5SDimitry Andric #include "llvm/Support/BinaryStreamWriter.h"
13*0b57cec5SDimitry Andric 
14*0b57cec5SDimitry Andric using namespace llvm;
15*0b57cec5SDimitry Andric using namespace llvm::codeview;
16*0b57cec5SDimitry Andric 
initialize(BinaryStreamReader Reader)17*0b57cec5SDimitry Andric Error DebugFrameDataSubsectionRef::initialize(BinaryStreamReader Reader) {
18*0b57cec5SDimitry Andric   if (Reader.bytesRemaining() % sizeof(FrameData) != 0) {
19*0b57cec5SDimitry Andric     if (auto EC = Reader.readObject(RelocPtr))
20*0b57cec5SDimitry Andric       return EC;
21*0b57cec5SDimitry Andric   }
22*0b57cec5SDimitry Andric 
23*0b57cec5SDimitry Andric   if (Reader.bytesRemaining() % sizeof(FrameData) != 0)
24*0b57cec5SDimitry Andric     return make_error<CodeViewError>(cv_error_code::corrupt_record,
25*0b57cec5SDimitry Andric                                      "Invalid frame data record format!");
26*0b57cec5SDimitry Andric 
27*0b57cec5SDimitry Andric   uint32_t Count = Reader.bytesRemaining() / sizeof(FrameData);
28*0b57cec5SDimitry Andric   if (auto EC = Reader.readArray(Frames, Count))
29*0b57cec5SDimitry Andric     return EC;
30*0b57cec5SDimitry Andric   return Error::success();
31*0b57cec5SDimitry Andric }
32*0b57cec5SDimitry Andric 
initialize(BinaryStreamRef Section)33*0b57cec5SDimitry Andric Error DebugFrameDataSubsectionRef::initialize(BinaryStreamRef Section) {
34*0b57cec5SDimitry Andric   BinaryStreamReader Reader(Section);
35*0b57cec5SDimitry Andric   return initialize(Reader);
36*0b57cec5SDimitry Andric }
37*0b57cec5SDimitry Andric 
calculateSerializedSize() const38*0b57cec5SDimitry Andric uint32_t DebugFrameDataSubsection::calculateSerializedSize() const {
39*0b57cec5SDimitry Andric   uint32_t Size = sizeof(FrameData) * Frames.size();
40*0b57cec5SDimitry Andric   if (IncludeRelocPtr)
41*0b57cec5SDimitry Andric     Size += sizeof(uint32_t);
42*0b57cec5SDimitry Andric   return Size;
43*0b57cec5SDimitry Andric }
44*0b57cec5SDimitry Andric 
commit(BinaryStreamWriter & Writer) const45*0b57cec5SDimitry Andric Error DebugFrameDataSubsection::commit(BinaryStreamWriter &Writer) const {
46*0b57cec5SDimitry Andric   if (IncludeRelocPtr) {
47*0b57cec5SDimitry Andric     if (auto EC = Writer.writeInteger<uint32_t>(0))
48*0b57cec5SDimitry Andric       return EC;
49*0b57cec5SDimitry Andric   }
50*0b57cec5SDimitry Andric 
51*0b57cec5SDimitry Andric   std::vector<FrameData> SortedFrames(Frames.begin(), Frames.end());
52*0b57cec5SDimitry Andric   llvm::sort(SortedFrames, [](const FrameData &LHS, const FrameData &RHS) {
53*0b57cec5SDimitry Andric     return LHS.RvaStart < RHS.RvaStart;
54*0b57cec5SDimitry Andric   });
55*0b57cec5SDimitry Andric   if (auto EC = Writer.writeArray(ArrayRef(SortedFrames)))
56*0b57cec5SDimitry Andric     return EC;
57*0b57cec5SDimitry Andric   return Error::success();
58*0b57cec5SDimitry Andric }
59*0b57cec5SDimitry Andric 
addFrameData(const FrameData & Frame)60*0b57cec5SDimitry Andric void DebugFrameDataSubsection::addFrameData(const FrameData &Frame) {
61*0b57cec5SDimitry Andric   Frames.push_back(Frame);
62 }
63