blob: 0948da698b880082c82e03b93ddbede9098eb9dc [file] [log] [blame]
/* 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. */
#define _ERRNO_H 1
#include <bits/errno.h>
.text
.align 4
.globl pthread_spin_trylock
.ent pthread_spin_trylock
pthread_spin_trylock:
.frame $sp, 0, $26, 0
.prologue 0
0: ldl_l $1, 0($16)
lda $2, 1
lda $0, EBUSY
bne $1, 1f
stl_c $2, 0($16)
beq $2, 2f
mb
lda $0, 0
1: ret
2: br 0b
.end pthread_spin_trylock