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
|
/* OpenIDA - Outil d'analyse de fichiers binaires
* links.c - résolution des liens entre différentes instructions
*
* Copyright (C) 2010 Cyrille Bagard
*
* This file is part of OpenIDA.
*
* OpenIDA 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.
*
* OpenIDA 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 "links.h"
/******************************************************************************
* *
* Paramètres : list = ensemble d'instructions à relier. *
* routines = prototypes existants à insérer. *
* count = quantité de ces prototypes. *
* statusbar = barre de statut avec progression à mettre à jour.*
* id = identifiant du message affiché à l'utilisateur. *
* *
* Description : Etablit les liens entres les différentes lignes de code. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
void establish_links_between_lines(GArchInstruction *list, GBinRoutine **routines, size_t count, GtkExtStatusBar *statusbar, guint id)
{
size_t i; /* Boucle de parcours */
vmpa_t start; /* Adresse de départ */
vmpa_t end; /* Adresse de fin */
GArchInstruction *iter; /* Boucle de parcours */
vmpa_t addr; /* Adresse référencée */
InstructionLinkType type; /* Type de référence */
GArchInstruction *target; /* Ligne visée par la référence*/
GArchInstruction *prev; /* Instruction précédente */
for (i = 0; i < count; i++)
{
start = g_binary_routine_get_address(routines[i]);
end = start + g_binary_routine_get_size(routines[i]);
/* Définition de toutes les destinations */
for (iter = g_arch_instruction_find_by_address(list, start, true);
iter != NULL;
iter = g_arch_instruction_get_next_iter(list, iter, end))
{
type = g_arch_instruction_get_link(iter, &addr);
switch (type)
{
case ILT_NONE:
break;
case ILT_JUMP:
target = g_arch_instruction_find_by_address(list, addr, true);
if (target != NULL)
g_arch_instruction_link_with(iter, target, type);
break;
case ILT_JUMP_IF_FALSE:
break;
case ILT_JUMP_IF_TRUE:
target = g_arch_instruction_find_by_address(list, addr, true);
if (target != NULL)
{
g_arch_instruction_link_with(iter, target, type);
target = g_arch_instruction_get_next_iter(list, iter, end);
if (target != NULL)
g_arch_instruction_link_with(iter, target, ILT_JUMP_IF_FALSE);
}
break;
case ILT_CALL:
target = g_arch_instruction_find_by_address(list, addr, true);
if (target != NULL)
g_arch_instruction_link_with(iter, target, type);
break;
default:
/**
* Note pour GCC : à ce stade du désassemblage, ILT_CATCH_EXCEPTION
* ne peut être présente, car ne provenant que de greffons.
* Pour ILT_EXEC_FLOW, sa seule insertion est ici, plus bas.
*/
break;
}
}
/* Rattachement de deux blocs selon le flux normal */
iter = g_arch_instruction_find_by_address(list, start, true);
for (iter = g_arch_instruction_get_next_iter(list, iter, end);
iter != NULL;
iter = g_arch_instruction_get_next_iter(list, iter, end))
{
if (!g_arch_instruction_has_sources(iter))
continue;
prev = g_arch_instruction_get_prev_iter(list, iter);
if (g_arch_instruction_is_return(prev))
continue;
if (!g_arch_instruction_has_destinations(prev))
g_arch_instruction_link_with(prev, iter, ILT_EXEC_FLOW);
}
gtk_extended_status_bar_update_activity(statusbar, id, (i + 1) * 1.0 / count);
}
}
|
