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atomic_inc.S revision 1.2.4.2 
      1 /*	$NetBSD: atomic_inc.S,v 1.2.4.2 2008/01/09 01:20:49 matt 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 
     43 LEAF_NOPROFILE(_atomic_inc_32, 1)
     44 1:	ldl_l	t1, 0(a0)
     45 	addl	t1, 1, t2
     46 	stl_c	t2, 0(a0)
     47 	beq	t2, 2f
     48 	RET
     49 2:	br	1b
     50 	END(_atomic_inc_32)
     51 ATOMIC_OP_ALIAS(atomic_inc_32,_atomic_inc_32)
     52 ATOMIC_OP_ALIAS(atomic_inc_uint,_atomic_inc_32)
     53 STRONG_ALIAS(_atomic_inc_uint,_atomic_inc_32)
     54 
     55 LEAF_NOPROFILE(_atomic_inc_32_nv, 1)
     56 1:	ldl_l	t1, 0(a0)
     57 	addl	t1, 1, t2
     58 	mov	t2, v0
     59 	stl_c	t2, 0(a0)
     60 	beq	t2, 2f
     61 	RET
     62 2:	br	1b
     63 	END(_atomic_inc_32_nv)
     64 ATOMIC_OP_ALIAS(atomic_inc_32_nv,_atomic_inc_32_nv)
     65 ATOMIC_OP_ALIAS(atomic_inc_uint_nv,_atomic_inc_32_nv)
     66 STRONG_ALIAS(_atomic_inc_uint_nv,_atomic_inc_32_nv)
     67 
     68 LEAF_NOPROFILE(_atomic_inc_64, 1)
     69 1:	ldq_l	t1, 0(a0)
     70 	addq	t1, 1, t2
     71 	stq_c	t2, 0(a0)
     72 	beq	t2, 2f
     73 	RET
     74 2:	br	1b
     75 	END(_atomic_inc_64)
     76 ATOMIC_OP_ALIAS(atomic_inc_64,_atomic_inc_64)
     77 ATOMIC_OP_ALIAS(atomic_inc_ulong,_atomic_inc_64)
     78 STRONG_ALIAS(_atomic_inc_ulong,_atomic_inc_64)
     79 ATOMIC_OP_ALIAS(atomic_inc_ptr,_atomic_inc_64)
     80 STRONG_ALIAS(_atomic_inc_ptr,_atomic_inc_64)
     81 
     82 LEAF_NOPROFILE(_atomic_inc_64_nv, 1)
     83 1:	ldq_l	t1, 0(a0)
     84 	addq	t1, 1, t2
     85 	mov	t2, v0
     86 	stq_c	t2, 0(a0)
     87 	beq	t2, 2f
     88 	RET
     89 2:	br	1b
     90 	END(_atomic_inc_64_nv)
     91 ATOMIC_OP_ALIAS(atomic_inc_64_nv,_atomic_inc_64_nv)
     92 ATOMIC_OP_ALIAS(atomic_inc_ulong_nv,_atomic_inc_64_nv)
     93 STRONG_ALIAS(_atomic_inc_ulong_nv,_atomic_inc_64_nv)
     94 ATOMIC_OP_ALIAS(atomic_inc_ptr_nv,_atomic_inc_64_nv)
     95 STRONG_ALIAS(_atomic_inc_ptr_nv,_atomic_inc_64_nv)
     96