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
|
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
|
-
+
-
-
+
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
-
-
-
+
+
+
+
|
* file.
*/
.globl _of_forward
.globl _of_forward_stret
.section __TEXT, __objc_methname, cstring_literals
L_str_forwardingTargetForSelector_:
L_sel_forwardingTargetForSelector_:
.long L_str_forwardingTargetForSelector_
ldr r4, L_sel_forwardingTargetForSelector_$indirect_L0
ldr r4, sel_forwardingTargetForSelector_$indirect_L0
L0:
ldr r4, [pc, r4]
blx _object_getClass
mov r1, r4
blx _class_respondsToSelector
cmp r0, #0
beq fail
beq 0f
ldr r0, [sp, #64]
mov r1, r4
ldr r2, [sp, #68]
blx _objc_msgSend
cmp r0, #0
beq fail
beq 0f
ldr r1, [sp, #64]
cmp r0, r1
beq fail
beq 0f
fldmfdd sp!, {d0-d7}
add sp, sp, #4 @ throw away r0
ldmfd sp!, {r1-r4, lr}
b _objc_msgSend
fail:
ldr r4, L_sel_forwardingTargetForSelector_$indirect_L1
ldr r4, sel_forwardingTargetForSelector_$indirect_L1
L1:
ldr r4, [pc, r4]
mov r0, r1
blx _object_getClass
mov r1, r4
blx _class_respondsToSelector
cmp r0, #0
beq fail_stret
beq 0f
ldr r0, [sp, #68]
mov r1, r4
ldr r2, [sp, #72]
blx _objc_msgSend
cmp r0, #0
beq fail_stret
beq 0f
ldr r1, [sp, #68]
cmp r0, r1
beq fail_stret
beq 0f
mov r1, r0
fldmfdd sp!, {d0-d7}
ldmfd sp!, {r0}
add sp, sp, #4 @ throw away r1
ldmfd sp!, {r2-r4, lr}
b _objc_msgSend_stret
fail_stret:
L_sel_forwardingTargetForSelector_$indirect_L0:
.long L_sel_forwardingTargetForSelector_-(L0+8)
L_sel_forwardingTargetForSelector_$indirect_L1:
.long L_sel_forwardingTargetForSelector_-(L1+8)
|