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2b778ceb | 1 | /* Copyright (C) 2003-2021 Free Software Foundation, Inc. |
29da0ceb UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Richard Henderson <rth@twiddle.net>, 2003. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff | 16 | License along with the GNU C Library. If not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
29da0ceb UD |
18 | |
19 | ||
20 | #define _ERRNO_H 1 | |
21 | #include <bits/errno.h> | |
22 | ||
23 | .text | |
24 | .align 4 | |
25 | ||
26 | .globl pthread_spin_trylock | |
27 | .ent pthread_spin_trylock | |
28 | pthread_spin_trylock: | |
29 | .frame $sp, 0, $26, 0 | |
30 | .prologue 0 | |
31 | ||
32 | 0: ldl_l $1, 0($16) | |
33 | lda $2, 1 | |
34 | lda $0, EBUSY | |
35 | bne $1, 1f | |
36 | ||
37 | stl_c $2, 0($16) | |
38 | beq $2, 2f | |
39 | mb | |
40 | lda $0, 0 | |
41 | ||
42 | 1: ret | |
43 | 2: br 0b | |
44 | ||
45 | .end pthread_spin_trylock |