Home | History | Annotate | Line # | Download | only in alpha 
      1 /*	$NetBSD: pthread_md.S,v 1.1 2009/05/18 13:03:35 njoly Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007, 2008, 2009 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Nick Hudson.
      9 
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <machine/asm.h>
     33 
     34 	.align 2
     35 LEAF(pthread__ras_simple_lock_init, 1)
     36 	stl	zero, 0(a0)
     37 	nop
     38 	RET
     39 END(pthread__ras_simple_lock_init)
     40 
     41 	.align 2
     42 LEAF(pthread__ras_simple_lock_try, 1)
     43 	ldiq	t0, 1
     44 pthread__lock_ras_start:	.globl	pthread__lock_ras_start
     45 	ldl	v0, 0(a0)
     46 	stl	t0, 0(a0)
     47 pthread__lock_ras_end:		.globl	pthread__lock_ras_end
     48 	cmpeq	v0, 0, v0
     49 	RET
     50 END(pthread__ras_simple_lock_try)
     51 
     52 	.align 2
     53 LEAF(pthread__ras_simple_unlock, 1)
     54 	stl	zero, 0(a0)
     55 	nop
     56 	RET
     57 END(pthread__ras_simple_unlock)
     58