/* Copyright (C) 2005 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, see
   <http://www.gnu.org/licenses/>.  */

#define _ERRNO_H 1
#include <bits/errno.h>

#include <sysdep.h>

	.text
	.align	4

ENTRY (pthread_spin_trylock)
	mov	r1, #1
	swp	r2, r1, [r0]
	teq	r2, #0
	moveq	r0, #0
	movne	r0, #EBUSY
	PSEUDO_RET_NOERRNO
END (pthread_spin_trylock)