1/* Copyright (C) 2005 Free Software Foundation, Inc.
2   This file is part of the GNU C Library.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, see
16   <http://www.gnu.org/licenses/>.  */
17
18#include <sys/asm.h>
19#include <sysdep.h>
20#define _ERRNO_H 1
21#include <bits/errno.h>
22#include <sgidefs.h>
23
24ENTRY (pthread_spin_trylock)
25	.set	push
26#if _MIPS_SIM == _ABIO32
27	.set	mips2
28#endif
29	ll	a2, 0(a0)
30	li	a1, 1
31	bnez	a2, 1f
32	sc	a1, 0(a0)
33	beqz	a1, 1f
34	MIPS_SYNC
35	.set	pop
36	li	v0, 0
37	j	ra
38	nop
391:	li	v0, EBUSY
40	j	ra
41	nop
42END (pthread_spin_trylock)
43