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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
|
/* Copyright (C) 2003-2014 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
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <shlib-compat.h>
#include <pthread-errnos.h>
#include <tcb-offsets.h>
#include <structsem.h>
#include <lowlevellock.h>
#include "lowlevel-atomic.h"
#if VALUE != 0
# error "code needs to be rewritten for VALUE != 0"
#endif
.text
.globl sem_timedwait
.type sem_timedwait,@function
.align 5
cfi_startproc
sem_timedwait:
.LSTARTCODE:
#ifdef SHARED
cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect,
DW.ref.__gcc_personality_v0)
cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART)
#else
cfi_personality(DW_EH_PE_absptr, __gcc_personality_v0)
cfi_lsda(DW_EH_PE_absptr, .LexceptSTART)
#endif
mov.l @r4, r0
2:
tst r0, r0
bt 1f
mov r0, r3
mov r0, r6
add #-1, r3
CMPXCHG (r6, @r4, r3, r2)
bf/s 2b
mov r2, r0
rts
mov #0, r0
1:
/* Check whether the timeout value is valid. */
mov.l r8, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r8, 0)
mov.l r9, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r9, 0)
mov.l r10, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r10, 0)
mov.l r12, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r12, 0)
sts.l pr, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (pr, 0)
add #-8, r15
cfi_adjust_cfa_offset (8)
mov r4, r8
mov r5, r9
/* Check for invalid nanosecond field. */
mov.l @(4,r9), r0
mov.l .L1g, r1
cmp/hs r1, r0
bt/s .Lerrno_exit
mov #EINVAL, r10
INC (@(NWAITERS,r8),r2)
7:
/* Compute relative timeout. */
mov r15, r4
mov #0, r5
mov #__NR_gettimeofday, r3
trapa #0x12
SYSCALL_INST_PAD
mov.l @(4,r15), r0
mov.w .L1k, r1
dmulu.l r0, r1 /* Milli seconds to nano seconds. */
mov.l @r9, r2
mov.l @(4,r9), r3
mov.l @r15, r0
sts macl, r1
sub r0, r2
clrt
subc r1, r3
bf 5f
mov.l .L1g, r1
add r1, r3
add #-1, r2
5:
cmp/pz r2
bf/s 6f /* Time is already up. */
mov #ETIMEDOUT, r0
/* Store relative timeout. */
mov.l r2, @r15
mov.l r3, @(4,r15)
.LcleanupSTART:
mov.l .Lenable0, r1
bsrf r1
nop
.Lenable0b:
mov r0, r10
mov r8, r4
#if FUTEX_WAIT == 0
mov.l @(PRIVATE,r8), r5
#else
mov.l @(PRIVATE,r8), r5
mov #FUTEX_WAIT, r0
or r0, r5
#endif
mov #0, r6
mov r15, r7
mov #SYS_futex, r3
extu.b r3, r3
trapa #0x14
SYSCALL_INST_PAD
mov.l .Ldisable0, r1
mov r10, r4
bsrf r1
mov r0, r10
.Ldisable0b:
mov r10, r0
.LcleanupEND:
tst r0, r0
bt 9f
cmp/eq #-EWOULDBLOCK, r0
bf 3f
9:
mov.l @r8, r0
8:
tst r0, r0
bt 7b
mov r0, r3
mov r0, r4
add #-1, r3
CMPXCHG (r4, @r8, r3, r2)
bf/s 8b
mov r2, r0
DEC (@(NWAITERS,r8), r2)
mov #0, r0
10:
cfi_remember_state
add #8, r15
cfi_adjust_cfa_offset (-8)
lds.l @r15+, pr
cfi_adjust_cfa_offset (-4)
cfi_restore (pr)
mov.l @r15+, r12
cfi_adjust_cfa_offset (-4)
cfi_restore (r12)
mov.l @r15+, r10
cfi_adjust_cfa_offset (-4)
cfi_restore (r10)
mov.l @r15+, r9
cfi_adjust_cfa_offset (-4)
cfi_restore (r9)
mov.l @r15+, r8
cfi_adjust_cfa_offset (-4)
cfi_restore (r8)
rts
nop
cfi_restore_state
3:
neg r0, r0
6:
mov r0, r10
DEC (@(NWAITERS,r8), r2)
.Lerrno_exit:
mova .Lgot2, r0
mov.l .Lgot2, r12
add r0, r12
mov.l .Lerrno2, r0
stc gbr, r1
mov.l @(r0, r12), r0
bra .Lexit
add r1, r0
.align 2
.Lerrno2:
.long errno@GOTTPOFF
.Lexit:
mov.l r10, @r0
bra 10b
mov #-1, r0
.L1k:
.word 1000
.align 2
.L1g:
.long 1000000000
.Lgot2:
.long _GLOBAL_OFFSET_TABLE_
.Lenable0:
.long __pthread_enable_asynccancel-.Lenable0b
.Ldisable0:
.long __pthread_disable_asynccancel-.Ldisable0b
.size sem_timedwait,.-sem_timedwait
.type sem_wait_cleanup,@function
sem_wait_cleanup:
DEC (@(NWAITERS,r8), r2)
.LcallUR:
mov.l .Lresume, r1
#ifdef PIC
add r12, r1
#endif
jsr @r1
nop
sleep
.align 2
.Lresume:
#ifdef PIC
.long _Unwind_Resume@GOTOFF
#else
.long _Unwind_Resume
#endif
.LENDCODE:
cfi_endproc
.size sem_wait_cleanup,.-sem_wait_cleanup
.section .gcc_except_table,"a",@progbits
.LexceptSTART:
.byte DW_EH_PE_omit ! @LPStart format (omit)
.byte DW_EH_PE_omit ! @TType format (omit)
.byte DW_EH_PE_uleb128 ! call-site format
.uleb128 .Lcstend-.Lcstbegin
.Lcstbegin:
.uleb128 .LcleanupSTART-.LSTARTCODE
.uleb128 .LcleanupEND-.LcleanupSTART
.uleb128 sem_wait_cleanup-.LSTARTCODE
.uleb128 0
.uleb128 .LcallUR-.LSTARTCODE
.uleb128 .LENDCODE-.LcallUR
.uleb128 0
.uleb128 0
.Lcstend:
#ifdef SHARED
.hidden DW.ref.__gcc_personality_v0
.weak DW.ref.__gcc_personality_v0
.section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
.align 4
.type DW.ref.__gcc_personality_v0, @object
.size DW.ref.__gcc_personality_v0, 4
DW.ref.__gcc_personality_v0:
.long __gcc_personality_v0
#endif
|
