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
|
/* PLT trampolines. Sparc 32-bit version.
Copyright (C) 2005-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
.text
.align 32
/* %g1: PLT offset loaded by PLT entry
* %g2: callers PC, which is PLT0 + 4, and we store the
* link map at PLT0 + 12, therefore we add 8 to get
* the address of the link map
*/
.globl _dl_runtime_resolve
.type _dl_runtime_resolve, @function
_dl_runtime_resolve:
cfi_startproc
save %sp, -104, %sp
cfi_def_cfa_register(%fp)
cfi_window_save
cfi_register (%o7, %i7)
ld [%g2 + 8], %o0
srl %g1, 10, %o1
call _dl_fixup
sub %o1, 4*12, %o1
jmp %o0
restore
cfi_endproc
.size _dl_runtime_resolve, .-_dl_runtime_resolve
#ifdef SHARED
/* For the profiling cases we pass in our stack frame
* as the base of the La_sparc32_regs, so it looks
* like:
* %l0 %sp + (0 * 8)
* %l1 %sp + (0 * 8) + 4
* ...
* %l6 %sp + (3 * 8)
* %l7 %sp + (3 * 8) + 4
* %i0 %sp + (4 * 8)
* %i1 %sp + (4 * 8) + 4
* ...
* %i6 %sp + (7 * 8)
* %i7 %sp + (7 * 8) + 4
* struct_ret_ptr %sp + (8 * 8)
* framesize %sp + (9 * 8)
*/
.globl _dl_profile_save_regs
.type _dl_profile_save_regs, @function
_dl_profile_save_regs:
cfi_startproc
std %l0, [%sp + ( 0 * 8)]
std %l2, [%sp + ( 1 * 8)]
std %l4, [%sp + ( 2 * 8)]
std %l6, [%sp + ( 3 * 8)]
std %i0, [%sp + ( 4 * 8)]
std %i2, [%sp + ( 5 * 8)]
std %i4, [%sp + ( 6 * 8)]
std %i6, [%sp + ( 7 * 8)]
ld [%fp + (8 * 8)], %l4
retl
st %l4, [%sp + (8 * 8)]
cfi_endproc
.size _dl_profile_save_regs, .-_dl_profile_save_regs
/* If we are going to call pltexit, then we must replicate
* the caller's stack frame.
* %o0: PLT resolved function address
*/
.globl _dl_profile_invoke
.type _dl_profile_invoke, @function
_dl_profile_invoke:
cfi_startproc
add %l0, 7, %l0
andn %l0, 7, %l0
add %l0, 2 * 8, %g1
sub %sp, %g1, %sp
srl %l0, 3, %l7
mov %o0, %l1
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
mov %i3, %o3
mov %i4, %o4
mov %i5, %o5
cmp %l0, 0
mov %fp, %l2
be 2f
add %sp, (11 * 8), %l3
1: ldd [%l2], %g2
add %l2, 0x8, %l2
subcc %l7, 1, %l7
std %g2, [%l3]
bne 1b
add %l3, 0x8, %l3
2: jmpl %l1, %o7
nop
std %o0, [%sp + ( 9 * 8)]
std %f0, [%sp + (10 * 8)]
mov %l5, %o0
mov %l6, %o1
add %sp, (11 * 8), %o2
call _dl_audit_pltexit
add %sp, ( 9 * 8), %o3
ldd [%sp + ( 9 * 8)], %i0
ldd [%sp + (10 * 8)], %f0
jmpl %i7 + 8, %g0
restore
cfi_endproc
.size _dl_profile_invoke, .-_dl_profile_invoke
/* %g1: PLT offset loaded by PLT entry
* %g2: callers PC, which is PLT0 + 4, and we store the
* link map at PLT0 + 12, therefore we add 8 to get
* the address of the link map
*/
.align 32
.globl _dl_runtime_profile
.type _dl_runtime_profile, @function
_dl_runtime_profile:
cfi_startproc
save %sp, -104, %sp
cfi_def_cfa_register(%fp)
cfi_window_save
cfi_register(%o7, %i7)
ld [%g2 + 8], %o0
srl %g1, 10, %o1
mov %i7, %o2
sub %o1, 4*12, %o1
mov %o0, %l5
mov %o1, %l6
call _dl_profile_save_regs
nop
mov %sp, %o3
call _dl_profile_fixup
add %sp, (9 * 8), %o4
ld [%sp + (9 * 8)], %l0
cmp %l0, 0
bl 1f
nop
call _dl_profile_invoke
nop
1: jmp %o0
restore
cfi_endproc
.size _dl_runtime_profile, .-_dl_runtime_profile
#endif
|
