Home | History | Annotate | Line # | Download | only in atomic
atomic_inc.S revision 1.4.2.1 
      1 /*	$NetBSD: atomic_inc.S,v 1.4.2.1 2008/06/23 04:26:45 wrstuden 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  *
     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 "atomic_op_asm.h"
     33 
     34 	.text
     35 
     36 ENTRY(_atomic_inc_32)
     37 1:	lwarx	%r10,0,%r3
     38 	addi	%r10,%r10,1
     39 	stwcx.	%r10,0,%r3
     40 	bne-	1b
     41 	blr
     42 ATOMIC_OP_ALIAS(atomic_inc_32,_atomic_inc_32)
     43 ATOMIC_OP_ALIAS(atomic_inc_uint,_atomic_inc_32)
     44 STRONG_ALIAS(_atomic_inc_uint,_atomic_inc_32)
     45 #if !defined(_LP64)
     46 ATOMIC_OP_ALIAS(atomic_inc_ulong,_atomic_inc_32)
     47 STRONG_ALIAS(_atomic_inc_ulong,_atomic_inc_32)
     48 ATOMIC_OP_ALIAS(atomic_inc_ptr,_atomic_inc_32)
     49 STRONG_ALIAS(_atomic_inc_ptr,_atomic_inc_32)
     50 #endif
     51 
     52 ENTRY(_atomic_inc_32_nv)
     53 1:	lwarx	%r10,0,%r3
     54 	addi	%r10,%r10,1
     55 	stwcx.	%r10,0,%r3
     56 	bne-	1b
     57 	mr	%r3,%r10
     58 	blr
     59 ATOMIC_OP_ALIAS(atomic_inc_32_nv,_atomic_inc_32_nv)
     60 ATOMIC_OP_ALIAS(atomic_inc_uint_nv,_atomic_inc_32_nv)
     61 STRONG_ALIAS(_atomic_inc_uint_nv,_atomic_inc_32_nv)
     62 #if !defined(_LP64)
     63 ATOMIC_OP_ALIAS(atomic_inc_ulong_nv,_atomic_inc_32_nv)
     64 STRONG_ALIAS(_atomic_inc_ulong_nv,_atomic_inc_32_nv)
     65 ATOMIC_OP_ALIAS(atomic_inc_ptr_nv,_atomic_inc_32_nv)
     66 STRONG_ALIAS(_atomic_inc_ptr_nv,_atomic_inc_32_nv)
     67 #endif
     68