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