LDFileFormat.h revision 533eae20118036f425f27bf0536ef0ccbb090b65 
1//===- LDFileFormat.h -----------------------------------------------------===//
2//
3//                     The MCLinker Project
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9#ifndef MCLD_LD_LDFILEFORMAT_H
10#define MCLD_LD_LDFILEFORMAT_H
11
12#include <cstdio>
13#include <cassert>
14
15namespace mcld {
16
17class LDSection;
18class ObjectBuilder;
19
20/** \class LDFileFormat
21 *  \brief LDFileFormat describes the common file formats.
22 */
23class LDFileFormat
24{
25public:
26  enum Kind {
27    Null,
28    Regular,
29    BSS,
30    NamePool,
31    Relocation,
32    Debug,
33    Target,
34    EhFrame,
35    EhFrameHdr,
36    GCCExceptTable,
37    Version,
38    Note,
39    MetaData,
40    Group,
41    LinkOnce,
42    StackNote,
43    Ignore,
44    Exclude
45  };
46
47protected:
48  LDFileFormat();
49
50public:
51  virtual ~LDFileFormat();
52
53  /// initStdSections - initialize all standard section headers.
54  /// @param [in] pBuilder The ObjectBuilder to create section headers
55  /// @param [in] pBitClass The bitclass of target backend.
56  virtual void initStdSections(ObjectBuilder& pBuilder,
57                               unsigned int pBitClass) = 0;
58
59  // -----  access functions  ----- //
60  LDSection& getText() {
61    assert(NULL != f_pTextSection);
62    return *f_pTextSection;
63  }
64
65  const LDSection& getText() const {
66    assert(NULL != f_pTextSection);
67    return *f_pTextSection;
68  }
69
70  LDSection& getData() {
71    assert(NULL != f_pDataSection);
72    return *f_pDataSection;
73  }
74
75  const LDSection& getData() const {
76    assert(NULL != f_pDataSection);
77    return *f_pDataSection;
78  }
79
80  LDSection& getBSS() {
81    assert(NULL != f_pBSSSection);
82    return *f_pBSSSection;
83  }
84
85  const LDSection& getBSS() const {
86    assert(NULL != f_pBSSSection);
87    return *f_pBSSSection;
88  }
89
90  LDSection& getReadOnly() {
91    assert(NULL != f_pReadOnlySection);
92    return *f_pReadOnlySection;
93  }
94
95  const LDSection& getReadOnly() const {
96    assert(NULL != f_pReadOnlySection);
97    return *f_pReadOnlySection;
98  }
99protected:
100  //         variable name         :  ELF               MachO
101  LDSection* f_pTextSection;       // .text             __text
102  LDSection* f_pDataSection;       // .data             __data
103  LDSection* f_pBSSSection;        // .bss              __bss
104  LDSection* f_pReadOnlySection;   // .rodata           __const
105};
106
107} // namespace of mcld
108
109#endif
110
111