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
|
/* Chrysalide - Outil d'analyse de fichiers binaires
* post.c - traitements complémentaires à la phase de désassemblage
*
* Copyright (C) 2014 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide 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 3 of the License, or
* (at your option) any later version.
*
* Chrysalide 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 Foobar. If not, see <http://www.gnu.org/licenses/>.
*/
#include "post.h"
#include "../../target.h"
/******************************************************************************
* *
* Paramètres : instr = instruction ARMv7 à traiter. *
* proc = représentation de l'architecture utilisée. *
* context = contexte associé à la phase de désassemblage. *
* format = accès aux données du binaire d'origine. *
* *
* Description : Complète un désassemblage accompli pour une instruction. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
void post_process_ldr_instructions(GArchInstruction *instr, GArchProcessor *proc, GProcContext *context, GExeFormat *format)
{
GArchOperand *op; /* Opérande numérique en place */
uint32_t addr; /* Adresse visée par le saut */
GBinFormat *bfmt; /* Version basique du format */
GArchOperand *new; /* Instruction de ciblage */
vmpa2t target;
mrange_t trange; /* Etendue du symbole à créer */
VMPA_BUFFER(loc);
char name[5 + VMPA_MAX_LEN];
GBinRoutine *routine; /* Nouvelle routine trouvée */
GBinSymbol *symbol; /* Nouveau symbole construit */
op = g_arch_instruction_get_operand(instr, 1);
if (!G_IS_IMM_OPERAND(op)) return;
if (g_imm_operand_get_value(G_IMM_OPERAND(op), MDS_32_BITS_UNSIGNED, &addr)
&& g_exe_format_translate_address_into_vmpa(format, addr, &target))
{
bfmt = G_BIN_FORMAT(format);
new = g_target_operand_new(MDS_32_BITS_UNSIGNED, addr);
if (!g_target_operand_resolve(G_TARGET_OPERAND(new), bfmt, true))
{
addr &= ~0x1;
do
{
const mrange_t *_range;
_range = g_arch_instruction_get_range(instr);
printf("@ 0x%08x RESOLVING FOR 0x%08x\n",
(unsigned int)_range->addr.virtual, (unsigned int)addr);
} while (0);
init_mrange(&trange, &target, 0);
vmpa2_virt_to_string(&target, MDS_UNDEFINED, loc, NULL);
snprintf(name, sizeof(name), "loc_%s", loc + 2);
routine = g_binary_routine_new();
g_binary_routine_set_name(routine, strdup(name));
//routine = try_to_demangle_routine(name);
g_binary_routine_set_range(routine, &trange);
symbol = g_binary_symbol_new(STP_CODE_LABEL);
g_binary_symbol_attach_routine(symbol, routine);
g_binary_format_add_symbol(bfmt, symbol);
g_target_operand_resolve(G_TARGET_OPERAND(new), bfmt, true);
}
else
do
{
const mrange_t *_range;
_range = g_arch_instruction_get_range(instr);
printf("@ 0x%08x RESOLVED FOR 0x%08x\n",
(unsigned int)_range->addr.virtual, (unsigned int)addr);
} while (0);
g_arch_instruction_replace_operand(instr, new, op);
}
}
|
