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atomic_cas.S revision 1.6 
      1  1.6   chs /*	$NetBSD: atomic_cas.S,v 1.6 2008/05/25 15:56:12 chs 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  1.6   chs ENTRY(_atomic_cas_32)
     37  1.4  matt 1:	lwarx	%r10,0,%r3
     38  1.4  matt 	cmpw	%r10,%r4
     39  1.2    ad 	bne-	2f
     40  1.4  matt 	stwcx.	%r5,0,%r3
     41  1.2    ad 	bne-	1b
     42  1.4  matt 2:	mr	%r3,%r10
     43  1.2    ad 	blr
     44  1.3    ad 
     45  1.2    ad ATOMIC_OP_ALIAS(atomic_cas_32,_atomic_cas_32)
     46  1.2    ad ATOMIC_OP_ALIAS(atomic_cas_uint,_atomic_cas_32)
     47  1.2    ad STRONG_ALIAS(_atomic_cas_uint,_atomic_cas_32)
     48  1.2    ad #if !defined(_LP64)
     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  1.2    ad #endif
     54  1.3    ad 
     55  1.3    ad ATOMIC_OP_ALIAS(atomic_cas_32_ni,_atomic_cas_32)
     56  1.3    ad STRONG_ALIAS(_atomic_cas_32_ni,_atomic_cas_32)
     57  1.3    ad ATOMIC_OP_ALIAS(atomic_cas_uint_ni,_atomic_cas_32)
     58  1.3    ad STRONG_ALIAS(_atomic_cas_uint_ni,_atomic_cas_32)
     59  1.3    ad #if !defined(_LP64)
     60  1.3    ad ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,_atomic_cas_32)
     61  1.3    ad STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_32)
     62  1.3    ad ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,_atomic_cas_32)
     63  1.3    ad STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_32)
     64  1.3    ad #endif
     65