src/tools/elfsymbolpatcher/ElfImage.h

   1 //------------------------------------------------------------------------------
   2 //      Copyright (c) 2003, Ingo Weinhold
   3 //
   4 //      Permission is hereby granted, free of charge, to any person obtaining a
   5 //      copy of this software and associated documentation files (the "Software"),
   6 //      to deal in the Software without restriction, including without limitation
   7 //      the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 //      and/or sell copies of the Software, and to permit persons to whom the
   9 //      Software is furnished to do so, subject to the following conditions:
  10 //
  11 //      The above copyright notice and this permission notice shall be included in
  12 //      all copies or substantial portions of the Software.
  13 //
  14 //      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 //      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 //      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17 //      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18 //      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19 //      FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20 //      DEALINGS IN THE SOFTWARE.
  21 //
  22 //      File Name:              ElfImage.h
  23 //      Author:                 Ingo Weinhold (bonefish@users.sf.net)
  24 //      Description:    Interface declaration of ElfImage, a class encapsulating
  25 //                                      a loaded ELF image, providing support for accessing the
  26 //                                      image's symbols and their relocation entries.
  27 //------------------------------------------------------------------------------
  28
  29 #ifndef ELF_IMAGE_H
  30 #define ELF_IMAGE_H
  31
  32 #include <File.h>
  33 #include <image.h>
  34
  35 #include "ElfFile.h"
  36
  37 class BList;
  38
  39 namespace SymbolPatcher {
  40
  41 class ElfSection;
  42 class ElfSymbol;
  43
  44 // ElfImage
  45 class ElfImage {
  46 public:
  47                                                                 ElfImage();
  48                                                                 ~ElfImage();
  49                         status_t                        SetTo(image_id image);
  50                         void                            Unset();
  51                         void                            Unload();
  52
  53                         image_id                        GetID() const   { return fImage; }
  54
  55                         status_t                        FindSymbol(const char* symbolName,
  56                                                                                    void** address);
  57                         status_t                        GetSymbolRelocations(const char* symbolName,
  58                                                                                                          BList* relocations);
  59
  60 private:
  61                         status_t                        _SetTo(image_id image);
  62
  63 private:
  64                         image_id                        fImage;
  65                         ElfFile                         fFile;
  66                         uint8*                          fTextAddress;
  67                         uint8*                          fDataAddress;
  68                         uint8*                          fGotAddress;
  69 };
  70
  71 } // namespace SymbolPatcher
  72
  73 using namespace SymbolPatcher;
  74
  75
  76 #endif  // ELF_IMAGE_H