1 //===- THMToTHMStub.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 TARGET_ARM_THMTOTHMSTUB_H_
10 #define TARGET_ARM_THMTOTHMSTUB_H_
11 
12 #include "mcld/Fragment/Stub.h"
13 #include <llvm/Support/DataTypes.h>
14 #include <string>
15 
16 namespace mcld {
17 
18 class Relocation;
19 class ResolveInfo;
20 
21 /** \class THMToTHMStub
22  *  \brief ARM stub for long call from ARM source to ARM target
23  *
24  */
25 class THMToTHMStub : public Stub {
26  public:
27   THMToTHMStub(bool pIsOutputPIC, bool pUsingThumb2);
28 
29   ~THMToTHMStub();
30 
31   // isMyDuty
32   bool isMyDuty(const class Relocation& pReloc,
33                 uint64_t pSource,
34                 uint64_t pTargetSymValue) const;
35 
36   // observers
37   const std::string& name() const;
38 
39   const uint8_t* getContent() const;
40 
41   size_t size() const;
42 
43   size_t alignment() const;
44 
45   // for T bit of this stub
46   uint64_t initSymValue() const;
47 
48  private:
49   THMToTHMStub(const THMToTHMStub&);
50 
51   THMToTHMStub& operator=(const THMToTHMStub&);
52 
53   /// for doClone
54   THMToTHMStub(const uint32_t* pData,
55                size_t pSize,
56                const_fixup_iterator pBegin,
57                const_fixup_iterator pEnd,
58                bool pUsingThumb2);
59 
60   /// doClone
61   Stub* doClone();
62 
63  private:
64   static const uint32_t PIC_TEMPLATE[];
65   static const uint32_t TEMPLATE[];
66   const uint32_t* m_pData;
67   std::string m_Name;
68   size_t m_Size;
69   bool m_bUsingThumb2;
70 };
71 
72 }  // namespace mcld
73 
74 #endif  // TARGET_ARM_THMTOTHMSTUB_H_
75