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
|
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
|
-
+
-
+
-
+
-
+
|
OFForward:
pushl %ebp
movl %esp, %ebp
pushl %ebx
subl $20, %esp
call get_eip
call .LgetEIP
addl $_GLOBAL_OFFSET_TABLE_, %ebx
movl 8(%ebp), %eax
movl %eax, (%esp)
call object_getClass@PLT
movl %eax, (%esp)
leal sel_forwardingTargetForSelector_@GOTOFF(%ebx), %eax
leal .Lsel_forwardingTargetForSelector_@GOTOFF(%ebx), %eax
movl %eax, 4(%esp)
call class_respondsToSelector@PLT
testl %eax, %eax
jz 0f
movl 8(%ebp), %eax
movl %eax, (%esp)
leal sel_forwardingTargetForSelector_@GOTOFF(%ebx), %eax
leal .Lsel_forwardingTargetForSelector_@GOTOFF(%ebx), %eax
movl %eax, 4(%esp)
call objc_msg_lookup@PLT
movl 8(%ebp), %edx
movl %edx, (%esp)
leal sel_forwardingTargetForSelector_@GOTOFF(%ebx), %edx
leal .Lsel_forwardingTargetForSelector_@GOTOFF(%ebx), %edx
movl %edx, 4(%esp)
movl 12(%ebp), %edx
movl %edx, 8(%esp)
call *%eax
testl %eax, %eax
jz 0f
|
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
|
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
|
-
+
-
+
-
+
-
+
-
+
|
addl $20, %esp
popl %ebx
popl %ebp
jmp *%eax
0:
leal OFMethodNotFound@GOTOFF(%ebx), %eax
movl OFMethodNotFound@GOT(%ebx), %eax
addl $20, %esp
popl %ebx
popl %ebp
jmp *%eax
.type OFForward, %function
.size OFForward, .-OFForward
OFForward_stret:
pushl %ebp
movl %esp, %ebp
pushl %ebx
subl $20, %esp
call get_eip
call .LgetEIP
addl $_GLOBAL_OFFSET_TABLE_, %ebx
movl 12(%ebp), %eax
movl %eax, (%esp)
call object_getClass@PLT
movl %eax, (%esp)
leal sel_forwardingTargetForSelector_@GOTOFF(%ebx), %eax
leal .Lsel_forwardingTargetForSelector_@GOTOFF(%ebx), %eax
movl %eax, 4(%esp)
call class_respondsToSelector@PLT
testl %eax, %eax
jz 0f
movl 12(%ebp), %eax
movl %eax, (%esp)
leal sel_forwardingTargetForSelector_@GOTOFF(%ebx), %eax
leal .Lsel_forwardingTargetForSelector_@GOTOFF(%ebx), %eax
movl %eax, 4(%esp)
call objc_msg_lookup@PLT
movl 12(%ebp), %edx
movl %edx, (%esp)
leal sel_forwardingTargetForSelector_@GOTOFF(%ebx), %edx
leal .Lsel_forwardingTargetForSelector_@GOTOFF(%ebx), %edx
movl %edx, 4(%esp)
movl 16(%ebp), %edx
movl %edx, 8(%esp)
call *%eax
testl %eax, %eax
jz 0f
|
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
197
198
199
200
|
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
197
198
199
200
|
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
-
+
+
-
-
+
+
-
-
+
+
-
+
|
addl $20, %esp
popl %ebx
popl %ebp
jmp *%eax
0:
leal OFMethodNotFound_stret@GOTOFF(%ebx), %eax
movl OFMethodNotFound_stret@GOT(%ebx), %eax
addl $20, %esp
popl %ebx
popl %ebp
jmp *%eax
.type OFForward_stret, %function
.size OFForward_stret, .-OFForward_stret
init:
.Linit:
pushl %ebp
movl %esp, %ebp
pushl %ebx
subl $4, %esp
call get_eip
call .LgetEIP
addl $_GLOBAL_OFFSET_TABLE_, %ebx
leal module@GOTOFF(%ebx), %eax
leal .Lmodule@GOTOFF(%ebx), %eax
movl %eax, (%esp)
call __objc_exec_class@PLT
addl $4, %esp
popl %ebx
popl %ebp
ret
get_eip:
.LgetEIP:
movl (%esp), %ebx
ret
#ifdef OF_SOLARIS
.section .init_array, "aw"
#else
.section .ctors, "aw", %progbits
#endif
.long init
.long .Linit
.section .rodata
str_forwardingTargetForSelector_:
.Lstr_forwardingTargetForSelector_:
.asciz "forwardingTargetForSelector:"
.section .data
sel_forwardingTargetForSelector_:
.long str_forwardingTargetForSelector_, 0
.Lsel_forwardingTargetForSelector_:
.long .Lstr_forwardingTargetForSelector_, 0
.long 0, 0
symtab:
.long 0, sel_forwardingTargetForSelector_
.Lsymtab:
.long 0, .Lsel_forwardingTargetForSelector_
.short 0, 0
.long 0
.long 0
module:
.long 8, 16, 0, symtab
.Lmodule:
.long 8, 16, 0, .Lsymtab
#ifdef OF_LINUX
#if defined(OF_LINUX) || defined(OF_HAIKU) || defined(OF_HURD)
.section .note.GNU-stack, "", %progbits
#endif
|