/Users/buildslave/jenkins/workspace/clang-stage2-coverage-R/llvm/tools/lld/lib/ReaderWriter/MachO/SectCreateFile.h
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1 | | //===---- lib/ReaderWriter/MachO/SectCreateFile.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 LLD_READER_WRITER_MACHO_SECTCREATE_FILE_H |
10 | | #define LLD_READER_WRITER_MACHO_SECTCREATE_FILE_H |
11 | | |
12 | | #include "lld/Core/DefinedAtom.h" |
13 | | #include "lld/Core/Simple.h" |
14 | | #include "lld/ReaderWriter/MachOLinkingContext.h" |
15 | | |
16 | | namespace lld { |
17 | | namespace mach_o { |
18 | | |
19 | | // |
20 | | // A FlateNamespaceFile instance may be added as a resolution source of last |
21 | | // resort, depending on how -flat_namespace and -undefined are set. |
22 | | // |
23 | | class SectCreateFile : public File { |
24 | | public: |
25 | | class SectCreateAtom : public SimpleDefinedAtom { |
26 | | public: |
27 | | SectCreateAtom(const File &file, StringRef segName, StringRef sectName, |
28 | | std::unique_ptr<MemoryBuffer> content) |
29 | | : SimpleDefinedAtom(file), |
30 | | _combinedName((segName + "/" + sectName).str()), |
31 | 1 | _content(std::move(content)) {} |
32 | | |
33 | 1 | ~SectCreateAtom() override = default; |
34 | | |
35 | 4 | uint64_t size() const override { return _content->getBufferSize(); } |
36 | | |
37 | 1 | Scope scope() const override { return scopeGlobal; } |
38 | | |
39 | 8 | ContentType contentType() const override { return typeSectCreate; } |
40 | | |
41 | 2 | SectionChoice sectionChoice() const override { return sectionCustomRequired; } |
42 | | |
43 | 2 | StringRef customSectionName() const override { return _combinedName; } |
44 | | |
45 | 1 | DeadStripKind deadStrip() const override { return deadStripNever; } |
46 | | |
47 | 3 | ArrayRef<uint8_t> rawContent() const override { |
48 | 3 | const uint8_t *data = |
49 | 3 | reinterpret_cast<const uint8_t*>(_content->getBufferStart()); |
50 | 3 | return ArrayRef<uint8_t>(data, _content->getBufferSize()); |
51 | 3 | } |
52 | | |
53 | 0 | StringRef segmentName() const { return _segName; } |
54 | 0 | StringRef sectionName() const { return _sectName; } |
55 | | |
56 | | private: |
57 | | std::string _combinedName; |
58 | | StringRef _segName; |
59 | | StringRef _sectName; |
60 | | std::unique_ptr<MemoryBuffer> _content; |
61 | | }; |
62 | | |
63 | 1 | SectCreateFile() : File("sectcreate", kindSectCreateObject) {} |
64 | | |
65 | | void addSection(StringRef seg, StringRef sect, |
66 | 1 | std::unique_ptr<MemoryBuffer> content) { |
67 | 1 | _definedAtoms.push_back( |
68 | 1 | new (allocator()) SectCreateAtom(*this, seg, sect, std::move(content))); |
69 | 1 | } |
70 | | |
71 | 1 | const AtomRange<DefinedAtom> defined() const override { |
72 | 1 | return _definedAtoms; |
73 | 1 | } |
74 | | |
75 | 1 | const AtomRange<UndefinedAtom> undefined() const override { |
76 | 1 | return _noUndefinedAtoms; |
77 | 1 | } |
78 | | |
79 | 1 | const AtomRange<SharedLibraryAtom> sharedLibrary() const override { |
80 | 1 | return _noSharedLibraryAtoms; |
81 | 1 | } |
82 | | |
83 | 1 | const AtomRange<AbsoluteAtom> absolute() const override { |
84 | 1 | return _noAbsoluteAtoms; |
85 | 1 | } |
86 | | |
87 | 1 | void clearAtoms() override { |
88 | 1 | _definedAtoms.clear(); |
89 | 1 | _noUndefinedAtoms.clear(); |
90 | 1 | _noSharedLibraryAtoms.clear(); |
91 | 1 | _noAbsoluteAtoms.clear(); |
92 | 1 | } |
93 | | |
94 | | private: |
95 | | AtomVector<DefinedAtom> _definedAtoms; |
96 | | }; |
97 | | |
98 | | } // namespace mach_o |
99 | | } // namespace lld |
100 | | |
101 | | #endif // LLD_READER_WRITER_MACHO_SECTCREATE_FILE_H |