Fragment.h revision 533eae20118036f425f27bf0536ef0ccbb090b65 
1//===- Fragment.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_FRAGMENT_FRAGMENT_H
10#define MCLD_FRAGMENT_FRAGMENT_H
11
12#include <llvm/ADT/ilist_node.h>
13
14#include <llvm/Support/DataTypes.h>
15
16#include <cstddef>
17#include <cassert>
18
19namespace mcld {
20
21class SectionData;
22
23/** \class Fragment
24 *  \brief Fragment is the minimun linking unit of MCLinker.
25 */
26class Fragment : public llvm::ilist_node<Fragment>
27{
28public:
29  enum Type {
30    Alignment,
31    Fillment,
32    Region,
33    Target,
34    Stub,
35    Null
36  };
37
38public:
39  Fragment();
40
41  Fragment(Type pKind, SectionData *pParent = NULL);
42
43  virtual ~Fragment();
44
45  Type getKind() const { return m_Kind; }
46
47  const SectionData* getParent() const { return m_pParent; }
48  SectionData*       getParent()       { return m_pParent; }
49
50  void setParent(SectionData *pValue) { m_pParent = pValue; }
51
52  uint64_t getOffset() const;
53
54  void setOffset(uint64_t pOffset) { m_Offset = pOffset; }
55
56  bool hasOffset() const;
57
58  static bool classof(const Fragment *O) { return true; }
59
60  virtual size_t size() const {
61    assert(false && "Can not call abstract Fragment::size()!");
62    return 0;
63  }
64
65private:
66  Fragment(const Fragment& );            // DO NOT IMPLEMENT
67  Fragment& operator=(const Fragment& ); // DO NOT IMPLEMENT
68
69private:
70  Type m_Kind;
71  SectionData* m_pParent;
72
73  uint64_t m_Offset;
74
75};
76
77} // namespace of mcld
78
79#endif
80
81