1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#if defined(DYNAMIC_MODULES) && defined(ELF_LOADER_TARGET)
#ifndef ELF_LOADER_H
#define ELF_LOADER_H
#include "elf32.h"
#include "common/stream.h"
#include "backends/plugins/dynamic-plugin.h"
class DLObject {
protected:
void *_segment, *_symtab;
char *_strtab;
int _symbol_cnt;
int _symtab_sect;
void *_dtors_start, *_dtors_end;
int _segmentSize;
//void seterror(const char *fmt, ...);
virtual void unload();
virtual bool relocate(Common::SeekableReadStream* DLFile, unsigned long offset, unsigned long size, void *relSegment) = 0;
bool load(Common::SeekableReadStream* DLFile);
bool readElfHeader(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr);
bool readProgramHeaders(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr, Elf32_Phdr *phdr, int num);
virtual bool loadSegment(Common::SeekableReadStream* DLFile, Elf32_Phdr *phdr);
Elf32_Shdr *loadSectionHeaders(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr);
int loadSymbolTable(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr);
bool loadStringTable(Common::SeekableReadStream* DLFile, Elf32_Shdr *shdr);
virtual void relocateSymbols(Elf32_Addr offset);
virtual bool relocateRels(Common::SeekableReadStream* DLFile, Elf32_Ehdr *ehdr, Elf32_Shdr *shdr) = 0;
public:
bool open(const char *path);
bool close();
void *symbol(const char *name);
void discard_symtab();
DLObject() : _segment(NULL), _symtab(NULL), _strtab(NULL), _symbol_cnt(0),
_symtab_sect(-1), _dtors_start(NULL), _dtors_end(NULL), _segmentSize(0) {}
};
#endif /* ELF_LOADER_H */
#endif /* defined(DYNAMIC_MODULES) && defined(ELF_LOADER_TARGET) */
|
