1 //===- OutputSegment.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_MACHO_OUTPUT_SEGMENT_H
10 #define LLD_MACHO_OUTPUT_SEGMENT_H
11 
12 #include "OutputSection.h"
13 #include "lld/Common/LLVM.h"
14 
15 namespace lld {
16 namespace macho {
17 
18 namespace segment_names {
19 
20 constexpr const char pageZero[] = "__PAGEZERO";
21 constexpr const char text[] = "__TEXT";
22 constexpr const char data[] = "__DATA";
23 constexpr const char linkEdit[] = "__LINKEDIT";
24 constexpr const char dataConst[] = "__DATA_CONST";
25 constexpr const char ld[] = "__LD"; // output only with -r
26 constexpr const char dwarf[] = "__DWARF";
27 
28 } // namespace segment_names
29 
30 class OutputSection;
31 class InputSection;
32 
33 class OutputSegment {
34 public:
35   const OutputSection *firstSection() const { return sections.front(); }
36   const OutputSection *lastSection() const { return sections.back(); }
37 
38   void addOutputSection(OutputSection *os);
39   void sortOutputSections(
40       llvm::function_ref<bool(OutputSection *, OutputSection *)> comparator) {
41     llvm::stable_sort(sections, comparator);
42   }
43 
44   const std::vector<OutputSection *> &getSections() const { return sections; }
45   size_t numNonHiddenSections() const;
46 
47   uint64_t fileOff = 0;
48   StringRef name;
49   uint32_t maxProt = 0;
50   uint32_t initProt = 0;
51   uint8_t index;
52 
53 private:
54   std::vector<OutputSection *> sections;
55 };
56 
57 extern std::vector<OutputSegment *> outputSegments;
58 
59 OutputSegment *getOrCreateOutputSegment(StringRef name);
60 
61 } // namespace macho
62 } // namespace lld
63 
64 #endif
65