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
|
/* PLT trampolines. PPC32 version.
Copyright (C) 2005, 2006 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, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
02110-1301 USA. */
#include <sysdep.h>
.section ".text"
.align 2
.globl _dl_runtime_resolve
.type _dl_runtime_resolve,@function
_dl_runtime_resolve:
cfi_startproc
# We need to save the registers used to pass parameters, and register 0,
# which is used by _mcount; the registers are saved in a stack frame.
stwu r1,-64(r1)
cfi_adjust_cfa_offset (64)
stw r0,12(r1)
stw r3,16(r1)
stw r4,20(r1)
# The code that calls this has put parameters for `fixup' in r12 and r11.
mr r3,r12
stw r5,24(r1)
mr r4,r11
stw r6,28(r1)
mflr r0
# We also need to save some of the condition register fields
stw r7,32(r1)
stw r0,68(r1)
cfi_offset (lr, 4)
stw r8,36(r1)
mfcr r0
stw r9,40(r1)
stw r10,44(r1)
stw r0,8(r1)
bl _dl_fixup@local
# 'fixup' returns the address we want to branch to.
mtctr r3
# Put the registers back...
lwz r0,68(r1)
lwz r10,44(r1)
lwz r9,40(r1)
mtlr r0
lwz r8,36(r1)
lwz r0,8(r1)
lwz r7,32(r1)
lwz r6,28(r1)
mtcrf 0xFF,r0
lwz r5,24(r1)
lwz r4,20(r1)
lwz r3,16(r1)
lwz r0,12(r1)
# ...unwind the stack frame, and jump to the PLT entry we updated.
addi r1,r1,64
bctr
cfi_endproc
.size _dl_runtime_resolve,.-_dl_runtime_resolve
#ifndef PROF
.align 2
.globl _dl_prof_resolve
.type _dl_prof_resolve,@function
_dl_prof_resolve:
cfi_startproc
# We need to save the registers used to pass parameters, and register 0,
# which is used by _mcount; the registers are saved in a stack frame.
stwu r1,-320(r1)
cfi_adjust_cfa_offset (320)
/* Stack layout:
+312 stackframe
+308 lr
+304 r1
+288 v12
+272 v11
+256 v10
+240 v9
+224 v8
+208 v7
+192 v6
+176 v5
+160 v4
+144 v3
+128 v2
+112 v1
+104 fp8
+96 fp7
+88 fp6
+80 fp5
+72 fp4
+64 fp3
+56 fp2
+48 fp1
+44 r10
+40 r9
+36 r8
+32 r7
+28 r6
+24 r5
+20 r4
+16 r3
+12 r0
+8 cr
r1 link
*/
stw r0,12(r1)
stw r3,16(r1)
stw r4,20(r1)
# The code that calls this has put parameters for `fixup' in r12 and r11.
mr r3,r12
stw r5,24(r1)
mr r4,r11
stw r6,28(r1)
mflr r5
# We also need to save some of the condition register fields.
stw r7,32(r1)
stw r5,324(r1)
cfi_offset (lr, 4)
stw r8,36(r1)
mfcr r0
stw r9,40(r1)
stw r10,44(r1)
stw r0,8(r1)
# Save the floating point registers
stfd fp1,48(r1)
stfd fp2,56(r1)
stfd fp3,64(r1)
stfd fp4,72(r1)
stfd fp5,80(r1)
stfd fp6,88(r1)
stfd fp7,96(r1)
stfd fp8,104(r1)
# XXX TODO: store vmx registers
# Load the extra parameters.
addi r6,r1,16
addi r7,r1,312
li r0,-1
stw r0,0(r7)
bl _dl_profile_fixup@local
# 'fixup' returns the address we want to branch to.
mtctr r3
# Put the registers back...
lwz r0,324(r1)
lwz r10,44(r1)
lwz r9,40(r1)
mtlr r0
lwz r8,36(r1)
lwz r0,8(r1)
lwz r7,32(r1)
lwz r6,28(r1)
mtcrf 0xFF,r0
lwz r5,24(r1)
lwz r4,20(r1)
lwz r3,16(r1)
lwz r0,12(r1)
# Load the floating point registers.
lfd fp1,48(r1)
lfd fp2,56(r1)
lfd fp3,64(r1)
lfd fp4,72(r1)
lfd fp5,80(r1)
lfd fp6,88(r1)
lfd fp7,96(r1)
lfd fp8,104(r1)
# ...unwind the stack frame, and jump to the PLT entry we updated.
addi r1,r1,320
bctr
cfi_endproc
.size _dl_prof_resolve,.-_dl_prof_resolve
#endif
|
