ObjectImageCommon.h revision 354362524a72b3fa43a6c09380b7ae3b2380cbba 
1//===-- ObjectImageCommon.h - Format independent executuable object image -===//
2//
3//		       The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file declares a file format independent ObjectImage class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_RUNTIMEDYLD_OBJECTIMAGECOMMON_H
15#define LLVM_RUNTIMEDYLD_OBJECTIMAGECOMMON_H
16
17#include "llvm/ExecutionEngine/ObjectBuffer.h"
18#include "llvm/ExecutionEngine/ObjectImage.h"
19#include "llvm/Object/ObjectFile.h"
20
21namespace llvm {
22
23class ObjectImageCommon : public ObjectImage {
24  ObjectImageCommon(); // = delete
25  ObjectImageCommon(const ObjectImageCommon &other); // = delete
26  virtual void anchor();
27
28protected:
29  object::ObjectFile *ObjFile;
30
31  // This form of the constructor allows subclasses to use
32  // format-specific subclasses of ObjectFile directly
33  ObjectImageCommon(ObjectBuffer *Input, object::ObjectFile *Obj)
34  : ObjectImage(Input), // saves Input as Buffer and takes ownership
35    ObjFile(Obj)
36  {
37  }
38
39public:
40  ObjectImageCommon(ObjectBuffer* Input)
41  : ObjectImage(Input) // saves Input as Buffer and takes ownership
42  {
43    ObjFile = object::ObjectFile::createObjectFile(Buffer->getMemBuffer());
44  }
45  virtual ~ObjectImageCommon() { delete ObjFile; }
46
47  virtual object::symbol_iterator begin_symbols() const
48	      { return ObjFile->begin_symbols(); }
49  virtual object::symbol_iterator end_symbols() const
50	      { return ObjFile->end_symbols(); }
51
52  virtual object::section_iterator begin_sections() const
53	      { return ObjFile->begin_sections(); }
54  virtual object::section_iterator end_sections() const
55	      { return ObjFile->end_sections(); }
56
57  virtual /* Triple::ArchType */ unsigned getArch() const
58	      { return ObjFile->getArch(); }
59
60  virtual StringRef getData() const { return ObjFile->getData(); }
61
62  virtual object::ObjectFile* getObjectFile() const { return ObjFile; }
63
64  // Subclasses can override these methods to update the image with loaded
65  // addresses for sections and common symbols
66  virtual void updateSectionAddress(const object::SectionRef &Sec,
67				    uint64_t Addr) {}
68  virtual void updateSymbolAddress(const object::SymbolRef &Sym, uint64_t Addr)
69	      {}
70
71  // Subclasses can override these methods to provide JIT debugging support
72  virtual void registerWithDebugger() {}
73  virtual void deregisterWithDebugger() {}
74};
75
76} // end namespace llvm
77
78#endif // LLVM_RUNTIMEDYLD_OBJECT_IMAGE_H
79
80