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
|
/* Copyright (C) 2003 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., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
#include <shlib-compat.h>
#include <pthread-errnos.h>
#include "lowlevel-atomic.h"
#define SYS_gettimeofday __NR_gettimeofday
#define SYS_futex 240
#define FUTEX_WAIT 0
#define FUTEX_WAKE 1
.text
.globl __new_sem_wait
.type __new_sem_wait,@function
.align 5
__new_sem_wait:
mov.l r12, @-r15
mov.l r8, @-r15
sts.l pr, @-r15
mov r4, r8
3:
mov.l @r8, r0
2:
tst r0, r0
bt 1f
mov r0, r3
mov r0, r4
add #-1, r3
CMPXCHG (r4, @r8, r3, r2)
bf 2b
lds.l @r15+, pr
mov.l @r15+, r8
mov.l @r15+, r12
rts
mov #0, r0
1:
mov r8, r4
mov #FUTEX_WAIT, r5
mov #0, r6
mov #0, r7
mov #SYS_futex, r3
extu.b r3, r3
trapa #0x14
SYSCALL_INST_PAD
tst r0, r0
bt 3b
cmp/eq #-EWOULDBLOCK, r0
bt 3b
neg r0, r0
mov r0, r8
mova .Lgot0, r0
mov.l .Lgot0, r12
add r0, r12
#if USE___THREAD
mov.l .Lerrno0, r0
stc gbr, r1
mov.l @(r0, r12), r0
add r1, r0
mov.l r8, @r0
#else
mov.l .Lerrloc0, r1
bsrf r1
nop
.Lerrloc0b:
mov.l r8, @r0
#endif
lds.l @r15+, pr
mov.l @r15+, r8
mov.l @r15+, r12
rts
mov #-1, r0
.align 2
.Lgot0:
.long _GLOBAL_OFFSET_TABLE_
#if USE___THREAD
.Lerrno0:
.long errno@GOTTPOFF
#else
.Lerrloc0:
.long __errno_location@PLT-(.Lerrloc0b+2-.)
#endif
.size __new_sem_wait,.-__new_sem_wait
versioned_symbol(libpthread, __new_sem_wait, sem_wait, GLIBC_2_1)
|
