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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
.file "lock.s"
#include "SYS.h"
/
/ _lock_try(lp)
/ - returns non-zero on success.
/
ENTRY(_lock_try)
movl $1,%eax
movl 4(%esp),%ecx
xchgb %al, (%ecx)
xorb $1, %al
ret
SET_SIZE(_lock_try)
/
/ _lock_clear(lp)
/ - clear lock and force it to appear unlocked in memory.
/
ENTRY(_lock_clear)
movl 4(%esp),%eax
movb $0, (%eax)
ret
SET_SIZE(_lock_clear)
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