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      1 /*	$NetBSD: atomic_add_32.S,v 1.2 2015/03/27 06:42:37 matt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2014 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Matt Thomas of 3am Software Foundry.
      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 ENTRY_NP(_atomic_inc_32)
     35 	li		a1, 1
     36 ENTRY_NP(_atomic_add_32)
     37 	amoadd.w.aq	a0, a1, 0(a0)
     38 	ret
     39 END(_atomic_add_32)
     40 END(_atomic_inc_32)
     41 
     42 ATOMIC_OP_ALIAS(atomic_add_32,_atomic_add_32)
     43 ATOMIC_OP_ALIAS(atomic_add_int,_atomic_add_32)
     44 STRONG_ALIAS(_atomic_add_int,_atomic_add_32)
     45 #ifndef _LP64
     46 ATOMIC_OP_ALIAS(atomic_add_long,_atomic_add_32)
     47 STRONG_ALIAS(_atomic_add_long,_atomic_add_32)
     48 ATOMIC_OP_ALIAS(atomic_add_ptr,_atomic_add_32)
     49 STRONG_ALIAS(_atomic_add_ptr,_atomic_add_32)
     50 #endif
     51 CRT_ALIAS(__sync_fetch_and_add_4,_atomic_add_32)
     52 CRT_ALIAS(__atomic_fetch_add_4,_atomic_add_32)
     53 
     54 ATOMIC_OP_ALIAS(atomic_inc_32,_atomic_inc_32)
     55 ATOMIC_OP_ALIAS(atomic_inc_uint,_atomic_inc_32)
     56 STRONG_ALIAS(_atomic_inc_uint,_atomic_inc_32)
     57 #ifndef _LP64
     58 ATOMIC_OP_ALIAS(atomic_inc_ulong,_atomic_inc_32)
     59 STRONG_ALIAS(_atomic_inc_ulong,_atomic_inc_32)
     60 ATOMIC_OP_ALIAS(atomic_inc_ptr,_atomic_inc_32)
     61 STRONG_ALIAS(_atomic_inc_ptr,_atomic_inc_32)
     62 #endif
     63 
     64 ENTRY_NP(_atomic_inc_32_nv)
     65 	li		a1, 1
     66 ENTRY_NP(_atomic_add_32_nv)
     67 	amoadd.w.aq	t0, a1, 0(a0)	/* update memory and get old value */
     68 	INT_ADD		a0, t0, a1	/* turn into new value */
     69 	ret
     70 END(_atomic_add_32_nv)
     71 END(_atomic_inc_32_nv)
     72 
     73 ATOMIC_OP_ALIAS(atomic_add_32_nv,_atomic_add_32_nv)
     74 ATOMIC_OP_ALIAS(atomic_add_int_nv,_atomic_add_32_nv)
     75 STRONG_ALIAS(_atomic_add_int_nv,_atomic_add_32_nv)
     76 #ifndef _LP64
     77 ATOMIC_OP_ALIAS(atomic_add_long_nv,_atomic_add_32_nv)
     78 STRONG_ALIAS(_atomic_add_long_nv,_atomic_add_32_nv)
     79 ATOMIC_OP_ALIAS(atomic_add_ptr_nv,_atomic_add_32_nv)
     80 STRONG_ALIAS(_atomic_add_ptr_nv,_atomic_add_32_nv)
     81 #endif
     82 CRT_ALIAS(__sync_add_and_fetch_4,_atomic_add_32_nv)
     83 CRT_ALIAS(__atomic_add_fetch_4,_atomic_add_32_nv)
     84 
     85 ATOMIC_OP_ALIAS(atomic_inc_32_nv,_atomic_inc_32_nv)
     86 ATOMIC_OP_ALIAS(atomic_inc_uint_nv,_atomic_inc_32_nv)
     87 STRONG_ALIAS(_atomic_inc_uint_nv,_atomic_inc_32_nv)
     88 #ifndef _LP64
     89 ATOMIC_OP_ALIAS(atomic_inc_ulong_nv,_atomic_inc_32_nv)
     90 STRONG_ALIAS(_atomic_inc_ulong_nv,_atomic_inc_32_nv)
     91 ATOMIC_OP_ALIAS(atomic_inc_ptr_nv,_atomic_inc_32_nv)
     92 STRONG_ALIAS(_atomic_inc_ptr_nv,_atomic_inc_32_nv)
     93 #endif
     94