Coverage Report

Created: 2018-08-19 21:11

/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/lld/COFF/Writer.h
Line
Count
Source
1
//===- Writer.h -------------------------------------------------*- C++ -*-===//
2
//
3
//                             The LLVM Linker
4
//
5
// This file is distributed under the University of Illinois Open Source
6
// License. See LICENSE.TXT for details.
7
//
8
//===----------------------------------------------------------------------===//
9
10
#ifndef LLD_COFF_WRITER_H
11
#define LLD_COFF_WRITER_H
12
13
#include "Chunks.h"
14
#include "llvm/ADT/StringRef.h"
15
#include "llvm/Object/COFF.h"
16
#include <chrono>
17
#include <cstdint>
18
#include <vector>
19
20
namespace lld {
21
namespace coff {
22
static const int PageSize = 4096;
23
24
void writeResult();
25
26
// OutputSection represents a section in an output file. It's a
27
// container of chunks. OutputSection and Chunk are 1:N relationship.
28
// Chunks cannot belong to more than one OutputSections. The writer
29
// creates multiple OutputSections and assign them unique,
30
// non-overlapping file offsets and RVAs.
31
class OutputSection {
32
public:
33
4.56k
  OutputSection(llvm::StringRef N, uint32_t Chars) : Name(N) {
34
4.56k
    Header.Characteristics = Chars;
35
4.56k
  }
36
  void addChunk(Chunk *C);
37
  void merge(OutputSection *Other);
38
11.0k
  ArrayRef<Chunk *> getChunks() { return Chunks; }
39
  void addPermissions(uint32_t C);
40
  void setPermissions(uint32_t C);
41
2.08k
  uint64_t getRVA() { return Header.VirtualAddress; }
42
1.00k
  uint64_t getFileOff() { return Header.PointerToRawData; }
43
  void writeHeaderTo(uint8_t *Buf);
44
45
  // Returns the size of this section in an executable memory image.
46
  // This may be smaller than the raw size (the raw size is multiple
47
  // of disk sector size, so there may be padding at end), or may be
48
  // larger (if that's the case, the loader reserves spaces after end
49
  // of raw data).
50
6.05k
  uint64_t getVirtualSize() { return Header.VirtualSize; }
51
52
  // Returns the size of the section in the output file.
53
1.22k
  uint64_t getRawSize() { return Header.SizeOfRawData; }
54
55
  // Set offset into the string table storing this section name.
56
  // Used only when the name is longer than 8 bytes.
57
18
  void setStringTableOff(uint32_t V) { StringTableOff = V; }
58
59
  // N.B. The section index is one based.
60
  uint32_t SectionIndex = 0;
61
62
  llvm::StringRef Name;
63
  llvm::object::coff_section Header = {};
64
65
private:
66
  uint32_t StringTableOff = 0;
67
  std::vector<Chunk *> Chunks;
68
};
69
70
}
71
}
72
73
#endif