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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/*
* HT Editor
* htelf.h
*
* Copyright (C) 1999-2002 Stefan Weyergraf
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __HTELF_H__
#define __HTELF_H__
#include "elfstruc.h"
#include "formats.h"
#include "endianess.h"
#include "htformat.h"
#include "relfile.h"
#define DESC_ELF "elf - unix exe/link format"
#define DESC_ELF_HEADER "elf/header"
#define DESC_ELF_SECTION_HEADERS "elf/section headers"
#define DESC_ELF_PROGRAM_HEADERS "elf/program headers"
#define DESC_ELF_SYMTAB "elf/symbol table %y (%d)"
#define DESC_ELF_RELOCTAB "elf/relocation table %y (%d)"
#define DESC_ELF_IMAGE "elf/image"
#define ATOM_ELF_CLASS 0x454c4600
#define ATOM_ELF_CLASS_STR "454c4600"
#define ATOM_ELF_DATA 0x454c4601
#define ATOM_ELF_DATA_STR "454c4601"
#define ATOM_ELF_OS_ABI 0x454c4602
#define ATOM_ELF_OS_ABI_STR "454c4602"
#define ATOM_ELF_TYPE 0x454c4603
#define ATOM_ELF_TYPE_STR "454c4603"
#define ATOM_ELF_MACHINE 0x454c4604
#define ATOM_ELF_MACHINE_STR "454c4604"
#define ATOM_ELF_SH_TYPE 0x454c4605
#define ATOM_ELF_SH_TYPE_STR "454c4605"
#define ATOM_ELF_SH_FLAGS 0x454c4606
#define ATOM_ELF_SH_FLAGS_STR "454c4606"
#define ATOM_ELF_PH_TYPE 0x454c4607
#define ATOM_ELF_PH_TYPE_STR "454c4607"
#define ATOM_ELF_PH_FLAGS 0x454c4608
#define ATOM_ELF_PH_FLAGS_STR "454c4608"
#define ATOM_ELF_ST_BIND 0x454c4609
#define ATOM_ELF_ST_BIND_STR "454c4609"
#define ATOM_ELF_ST_TYPE 0x454c460a
#define ATOM_ELF_ST_TYPE_STR "454c460a"
#define ATOM_ELF_R_386_TYPE 0x454c460b
#define ATOM_ELF_R_386_TYPE_STR "454c460b"
extern format_viewer_if htelf_if;
class FakeAddr: public Object {
public:
uint secidx;
uint symidx;
uint32 addr;
FakeAddr(uint asecidx, uint asymidx, uint32 aAddr)
: secidx(asecidx), symidx(asymidx), addr(aAddr)
{
}
virtual int compareTo(const Object *) const;
};
struct elf_section_headers {
uint count;
union {
ELF_SECTION_HEADER32 *sheaders32;
ELF_SECTION_HEADER64 *sheaders64;
};
};
union elf_section_header {
ELF_SECTION_HEADER32 sheaders32;
ELF_SECTION_HEADER64 sheaders64;
};
struct elf_program_headers {
uint count;
union {
ELF_PROGRAM_HEADER32 *pheaders32;
ELF_PROGRAM_HEADER64 *pheaders64;
};
};
struct ht_elf_reloc_section32 {
elf32_addr relocAddr;
uint relocShIdx;
};
struct ht_elf_shared_data {
FileOfs header_ofs;
ELF_HEADER ident;
Endianess byte_order;
union {
ELF_HEADER32 header32;
ELF_HEADER64 header64;
};
elf_section_headers sheaders;
ht_elf_reloc_section32 *shrelocs;
char **shnames;
elf_program_headers pheaders;
uint symtables;
uint reloctables;
ht_format_viewer *v_image;
int fake_undefined_shidx;
uint fake_undefined_size;
Container *undefined2fakeaddr;
};
/*
* ht_elf
*/
class ht_elf: public ht_format_group {
protected:
bool loc_enum;
/* new */
void auto_relocate32();
void fake_undefined_symbols32();
uint find_reloc_section_for(uint si);
void relocate_section(ht_reloc_file *f, uint si, uint rsi, elf32_addr a);
public:
void init(Bounds *b, File *file, format_viewer_if **ifs, ht_format_group *format_group, FileOfs header_ofs);
virtual void done();
/* extends ? */
virtual void loc_enum_start();
virtual bool loc_enum_next(ht_format_loc *loc);
};
/*
* ht_elf32_reloc_entry
*/
class ht_elf32_reloc_entry: public Object {
public:
uint type;
union {
uint32 r_32;
uint32 r_pc32;
} relocs;
ht_elf32_reloc_entry(uint type, uint32 A, uint32 P, uint32 S);
};
/*
* ht_elf32_reloc_file
*/
class ht_elf32_reloc_file: public ht_reloc_file {
protected:
ht_elf_shared_data *data;
/* extends ht_reloc_file */
virtual void reloc_apply(Object *reloc, byte *data);
virtual bool reloc_unapply(Object *reloc, byte *data);
public:
ht_elf32_reloc_file(File *File, bool own_streamfile, ht_elf_shared_data *data);
};
bool isValidELFSectionIdx(ht_elf_shared_data *elf_shared, int idx);
bool elf_phys_and_mem_section(elf_section_header *s, uint elfclass);
bool elf_valid_section(elf_section_header *s, uint elfclass);
bool elf_addr_to_section(elf_section_headers *section_headers, uint elfclass, ELFAddress addr, int *section);
bool elf_addr_to_ofs(elf_section_headers *section_headers, uint elfclass, ELFAddress addr, FileOfs *ofs);
bool elf_addr_is_valid(elf_section_headers *section_headers, uint elfclass, ELFAddress addr);
bool elf_ofs_to_addr(elf_section_headers *section_headers, uint elfclass, FileOfs ofs, ELFAddress *addr);
bool elf_ofs_to_section(elf_section_headers *section_headers, uint elfclass, FileOfs ofs, uint32 *section);
#endif /* !__HTELF_H__ */
|
