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atomic_add.S revision 1.2 
      1 /*	$NetBSD: atomic_add.S,v 1.2 2007/11/29 17:09:31 ad Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include "atomic_op_asm.h"
     40 
     41 	.text
     42 	.align	2
     43 
     44 ENTRY_NOPROFILE(_atomic_add_32)
     45 	movl	%sp@(4), %a0
     46 	movl	%sp@(8), %d0
     47 	addl	%d0, %a0@
     48 	rts
     49 ATOMIC_OP_ALIAS(atomic_add_32,_atomic_add_32)
     50 ATOMIC_OP_ALIAS(atomic_add_int,_atomic_add_32)
     51 STRONG_ALIAS(_atomic_add_int,_atomic_add_32)
     52 ATOMIC_OP_ALIAS(atomic_add_long,_atomic_add_32)
     53 STRONG_ALIAS(_atomic_add_long,_atomic_add_32)
     54 ATOMIC_OP_ALIAS(atomic_add_ptr,_atomic_add_32)
     55 STRONG_ALIAS(_atomic_add_ptr,_atomic_add_32)
     56 
     57 ENTRY_NOPROFILE(_atomic_add_32_nv)
     58 	movl	%sp@(4), %a0
     59 1:	movl	%a0@, %d0
     60 	movl	%d0, %d1
     61 	addl	%sp@(8), %d0
     62 	casl	%d1, %d0, %a0@
     63 	bne	1b
     64 	movl	%d0, %a0	/* pointers return also in %a0 */
     65 	rts
     66 ATOMIC_OP_ALIAS(atomic_add_32_nv,_atomic_add_32_nv)
     67 ATOMIC_OP_ALIAS(atomic_add_int_nv,_atomic_add_32_nv)
     68 STRONG_ALIAS(_atomic_add_int_nv,_atomic_add_32_nv)
     69 ATOMIC_OP_ALIAS(atomic_add_long_nv,_atomic_add_32_nv)
     70 STRONG_ALIAS(_atomic_add_long_nv,_atomic_add_32_nv)
     71 ATOMIC_OP_ALIAS(atomic_add_ptr_nv,_atomic_add_32_nv)
     72 STRONG_ALIAS(_atomic_add_ptr_nv,_atomic_add_32_nv)
     73