LLVM  9.0.0svn
DebugFrameDataSubsection.cpp
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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 
11 
12 using namespace llvm;
13 using namespace llvm::codeview;
14 
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 
32  BinaryStreamReader Reader(Section);
33  return initialize(Reader);
34 }
35 
37  uint32_t Size = sizeof(FrameData) * Frames.size();
38  if (IncludeRelocPtr)
39  Size += sizeof(uint32_t);
40  return Size;
41 }
42 
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 
60  Frames.push_back(Frame);
61 }
This class represents lattice values for constants.
Definition: AllocatorList.h:23
Data in the SUBSEC_FRAMEDATA subection.
Definition: CodeView.h:552
support::ulittle32_t RvaStart
Definition: CodeView.h:553
Error readObject(const T *&Dest)
Get a pointer to an object of type T from the underlying stream, as if by memcpy, and store the resul...
Error commit(BinaryStreamWriter &Writer) const override
ArrayRef< T > makeArrayRef(const T &OneElt)
Construct an ArrayRef from a single element.
Definition: ArrayRef.h:450
Error writeArray(ArrayRef< T > Array)
Writes an array of objects of type T to the underlying stream, as if by using memcpy.
Provides write only access to a subclass of WritableBinaryStream.
Error writeInteger(T Value)
Write the integer Value to the underlying stream in the specified endianness.
void sort(IteratorTy Start, IteratorTy End)
Definition: STLExtras.h:1115
static ErrorSuccess success()
Create a success value.
Definition: Error.h:326
BinaryStreamRef is to BinaryStream what ArrayRef is to an Array.
uint32_t Size
Definition: Profile.cpp:46
uint32_t bytesRemaining() const
Lightweight error class with error context and mandatory checking.
Definition: Error.h:157
Provides read only access to a subclass of BinaryStream.
Error readArray(ArrayRef< T > &Array, uint32_t NumElements)
Get a reference to a NumElements element array of objects of type T from the underlying stream as if ...