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atomic_cas.S revision 1.7 
      1  1.7  matt /*	$NetBSD: atomic_cas.S,v 1.7 2013/07/16 23:24:18 matt Exp $	*/
      2  1.2    ad 
      3  1.2    ad /*-
      4  1.3    ad  * Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
      5  1.2    ad  * All rights reserved.
      6  1.2    ad  *
      7  1.2    ad  * This code is derived from software contributed to The NetBSD Foundation
      8  1.2    ad  * by Jason R. Thorpe.
      9  1.2    ad  *
     10  1.2    ad  * Redistribution and use in source and binary forms, with or without
     11  1.2    ad  * modification, are permitted provided that the following conditions
     12  1.2    ad  * are met:
     13  1.2    ad  * 1. Redistributions of source code must retain the above copyright
     14  1.2    ad  *    notice, this list of conditions and the following disclaimer.
     15  1.2    ad  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.2    ad  *    notice, this list of conditions and the following disclaimer in the
     17  1.2    ad  *    documentation and/or other materials provided with the distribution.
     18  1.2    ad  *
     19  1.2    ad  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.2    ad  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.2    ad  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.2    ad  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.2    ad  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.2    ad  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.2    ad  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.2    ad  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.2    ad  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.2    ad  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.2    ad  * POSSIBILITY OF SUCH DAMAGE.
     30  1.2    ad  */
     31  1.2    ad 
     32  1.2    ad #include "atomic_op_asm.h"
     33  1.2    ad 
     34  1.2    ad 	.text
     35  1.2    ad 
     36  1.5   chs ENTRY(_atomic_cas_32)
     37  1.6  matt 	movl	4(%sp), %a0
     38  1.6  matt 	movl	8(%sp), %d0
     39  1.6  matt 	movl	12(%sp), %d1
     40  1.7  matt 	casl	%d0, %d1, (%a0)
     41  1.2    ad 	/* %d0 now contains the old value */
     42  1.2    ad 	movl	%d0, %a0	/* pointers return also in %a0 */
     43  1.2    ad 	rts
     44  1.7  matt END(_atomic_cas_32)
     45  1.3    ad 
     46  1.2    ad ATOMIC_OP_ALIAS(atomic_cas_32,_atomic_cas_32)
     47  1.2    ad ATOMIC_OP_ALIAS(atomic_cas_uint,_atomic_cas_32)
     48  1.2    ad STRONG_ALIAS(_atomic_cas_uint,_atomic_cas_32)
     49  1.2    ad ATOMIC_OP_ALIAS(atomic_cas_ulong,_atomic_cas_32)
     50  1.2    ad STRONG_ALIAS(_atomic_cas_ulong,_atomic_cas_32)
     51  1.2    ad ATOMIC_OP_ALIAS(atomic_cas_ptr,_atomic_cas_32)
     52  1.2    ad STRONG_ALIAS(_atomic_cas_ptr,_atomic_cas_32)
     53  1.3    ad 
     54  1.3    ad ATOMIC_OP_ALIAS(atomic_cas_32_ni,_atomic_cas_32)
     55  1.3    ad STRONG_ALIAS(_atomic_cas_32_ni,_atomic_cas_32)
     56  1.3    ad ATOMIC_OP_ALIAS(atomic_cas_uint_ni,_atomic_cas_32)
     57  1.3    ad STRONG_ALIAS(_atomic_cas_uint_ni,_atomic_cas_32)
     58  1.3    ad ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,_atomic_cas_32)
     59  1.3    ad STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_32)
     60  1.3    ad ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,_atomic_cas_32)
     61  1.3    ad STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_32)
     62