1//===- MachOWriter.h --------------------------------------------*- 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#ifndef LLVM_LIB_OBJCOPY_MACHO_MACHOWRITER_H
10#define LLVM_LIB_OBJCOPY_MACHO_MACHOWRITER_H
11
12#include "MachOLayoutBuilder.h"
13#include "MachOObject.h"
14#include "llvm/BinaryFormat/MachO.h"
15#include "llvm/ObjCopy/MachO/MachOObjcopy.h"
16#include "llvm/Object/MachO.h"
17
18namespace llvm {
19class Error;
20
21namespace objcopy {
22namespace macho {
23
24class MachOWriter {
25  Object &O;
26  bool Is64Bit;
27  bool IsLittleEndian;
28  uint64_t PageSize;
29  std::unique_ptr<WritableMemoryBuffer> Buf;
30  raw_ostream &Out;
31  MachOLayoutBuilder LayoutBuilder;
32
33  size_t headerSize() const;
34  size_t loadCommandsSize() const;
35  size_t symTableSize() const;
36  size_t strTableSize() const;
37
38  void writeHeader();
39  void writeLoadCommands();
40  template <typename StructType>
41  void writeSectionInLoadCommand(const Section &Sec, uint8_t *&Out);
42  void writeSections();
43  void writeSymbolTable();
44  void writeStringTable();
45  void writeRebaseInfo();
46  void writeBindInfo();
47  void writeWeakBindInfo();
48  void writeLazyBindInfo();
49  void writeExportInfo();
50  void writeIndirectSymbolTable();
51  void writeLinkData(std::optional<size_t> LCIndex, const LinkData &LD);
52  void writeCodeSignatureData();
53  void writeDataInCodeData();
54  void writeLinkerOptimizationHint();
55  void writeFunctionStartsData();
56  void writeDylibCodeSignDRsData();
57  void writeChainedFixupsData();
58  void writeExportsTrieData();
59  void writeTail();
60
61public:
62  MachOWriter(Object &O, bool Is64Bit, bool IsLittleEndian,
63              StringRef OutputFileName, uint64_t PageSize, raw_ostream &Out)
64      : O(O), Is64Bit(Is64Bit), IsLittleEndian(IsLittleEndian),
65        PageSize(PageSize), Out(Out),
66        LayoutBuilder(O, Is64Bit, OutputFileName, PageSize) {}
67
68  size_t totalSize() const;
69  Error finalize();
70  Error write();
71};
72
73} // end namespace macho
74} // end namespace objcopy
75} // end namespace llvm
76
77#endif // LLVM_LIB_OBJCOPY_MACHO_MACHOWRITER_H
78