Home | History | Annotate | Line # | Download | only in atomic 
      1 /*	$NetBSD: atomic_nand_32.S,v 1.2 2015/03/27 06:42:37 matt Exp $	*/
      2 /*-
      3  * Copyright (c) 2014 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Matt Thomas <matt (at) 3am-software.com>
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "atomic_op_asm.h"
     32 
     33 ENTRY_NP(_atomic_nand_32)
     34 	mv	t0, a0
     35 1:	lr.w	a0, 0(t0)
     36 	not	t2, a0
     37 	and	t2, t2, a1
     38 	sc.w	t1, t2, 0(t0)
     39 	bnez	t1, 1b
     40 	ret
     41 END(_atomic_nand_32)
     42 
     43 ATOMIC_OP_ALIAS(atomic_nand_32,_atomic_nand_32)
     44 ATOMIC_OP_ALIAS(atomic_nand_uint,_atomic_nand_32)
     45 STRONG_ALIAS(_atomic_nand_uint,_atomic_nand_32)
     46 #ifndef _LP64
     47 ATOMIC_OP_ALIAS(atomic_nand_ulong,_atomic_nand_32)
     48 STRONG_ALIAS(_atomic_nand_ulong,_atomic_nand_32)
     49 #endif
     50 CRT_ALIAS(__sync_fetch_and_nand_4,_atomic_nand_32)
     51 CRT_ALIAS(__atomic_fetch_nand_4,_atomic_nand_32)
     52 
     53 ENTRY_NP(_atomic_nand_32_nv)
     54 	mv	t0, a0
     55 1:	lr.w	a0, 0(t0)
     56 	not	a0, a0
     57 	and	a0, a0, a1
     58 	sc.w	t1, a0, 0(t0)
     59 	bnez	t1, 1b
     60 	ret
     61 END(_atomic_nand_32_nv)
     62 
     63 ATOMIC_OP_ALIAS(atomic_nand_32_nv,_atomic_nand_32_nv)
     64 ATOMIC_OP_ALIAS(atomic_nand_uint_nv,_atomic_nand_32_nv)
     65 STRONG_ALIAS(_atomic_nand_uint_nv,_atomic_nand_32_nv)
     66 #ifndef _LP64
     67 ATOMIC_OP_ALIAS(atomic_nand_ulong_nv,_atomic_nand_32_nv)
     68 STRONG_ALIAS(_atomic_nand_ulong_nv,_atomic_nand_32_nv)
     69 #endif
     70 CRT_ALIAS(__sync_nand_and_fetch_4,_atomic_nand_32_nv)
     71 CRT_ALIAS(__atomic_nand_fetch_4,_atomic_nand_32_nv)
     72