ObjectReader.h revision 533eae20118036f425f27bf0536ef0ccbb090b65 
1//===- ObjectReader.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_OBJECTREADER_H
10#define MCLD_LD_OBJECTREADER_H
11#include "mcld/LD/LDReader.h"
12#include <llvm/Support/system_error.h>
13#include <mcld/ADT/HashTable.h>
14#include <mcld/ADT/StringHash.h>
15#include <mcld/LD/ResolveInfo.h>
16
17namespace mcld {
18
19class Module;
20class Input;
21
22/** \class ObjectReader
23 *  \brief ObjectReader provides an common interface for different object
24 *  formats.
25 */
26class ObjectReader : public LDReader
27{
28protected:
29  typedef HashTable<ResolveInfo, hash::StringHash<hash::DJB> > GroupSignatureMap;
30
31protected:
32  ObjectReader()
33  { }
34
35public:
36  virtual ~ObjectReader() { f_GroupSignatureMap.clear(); }
37
38  virtual bool readHeader(Input& pFile) = 0;
39
40  virtual bool readSymbols(Input& pFile) = 0;
41
42  virtual bool readSections(Input& pFile) = 0;
43
44  /// readRelocations - read relocation sections
45  ///
46  /// This function should be called after symbol resolution.
47  virtual bool readRelocations(Input& pFile) = 0;
48
49  GroupSignatureMap& signatures()
50  { return f_GroupSignatureMap; }
51
52  const GroupSignatureMap& signatures() const
53  { return f_GroupSignatureMap; }
54
55protected:
56  GroupSignatureMap f_GroupSignatureMap;
57
58};
59
60} // namespace of mcld
61
62#endif
63
64