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
|
/* Copyright (C) 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@twiddle.net>, 2003.
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. */
.text
.align 4
.globl pthread_spin_lock
.ent pthread_spin_lock
pthread_spin_lock:
.frame $sp, 0, $26, 0
.prologue 0
0: ldl_l $1, 0($16)
lda $2, 1
lda $0, 0
bne $1, 1f
stl_c $2, 0($16)
beq $2, 1f
mb
ret
1: ldl $1, 0($16)
bne $1, 1b
unop
br 0b
.end pthread_spin_lock
|
