membar_ops.S revision 1.7 
11.7Sskrll/*	$NetBSD: membar_ops.S,v 1.7 2021/04/27 05:40:29 skrll Exp $	*/
21.2Smatt/*-
31.2Smatt * Copyright (c) 2008 The NetBSD Foundation, Inc.
41.2Smatt * All rights reserved.
51.2Smatt *
61.2Smatt * This code is derived from software contributed to The NetBSD Foundation
71.2Smatt * by Matt Thomas <matt@3am-software.com>
81.2Smatt *
91.2Smatt * Redistribution and use in source and binary forms, with or without
101.2Smatt * modification, are permitted provided that the following conditions
111.2Smatt * are met:
121.2Smatt * 1. Redistributions of source code must retain the above copyright
131.2Smatt *    notice, this list of conditions and the following disclaimer.
141.2Smatt * 2. Redistributions in binary form must reproduce the above copyright
151.2Smatt *    notice, this list of conditions and the following disclaimer in the
161.2Smatt *    documentation and/or other materials provided with the distribution.
171.2Smatt *
181.2Smatt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
191.2Smatt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
201.2Smatt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
211.2Smatt * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
221.2Smatt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
231.2Smatt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
241.2Smatt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
251.2Smatt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
261.2Smatt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
271.2Smatt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
281.2Smatt * POSSIBILITY OF SUCH DAMAGE.
291.2Smatt */
301.2Smatt
311.2Smatt#include "atomic_op_asm.h"
321.2Smatt
331.2Smatt#ifdef _ARM_ARCH_6
341.2Smatt
351.2SmattENTRY_NP(_membar_producer)
361.3Smatt#ifdef _ARM_ARCH_7
371.7Sskrll	dmb	ishst
381.3Smatt#else
391.6Sskrll	mov	r0, #0
401.7Sskrll	mcr	p15, 0, r0, c7, c10, 5	/* Data Memory Barrier */
411.3Smatt#endif
421.2Smatt	RET
431.4SmattEND(_membar_producer)
441.2SmattATOMIC_OP_ALIAS(membar_producer,_membar_producer)
451.2SmattATOMIC_OP_ALIAS(membar_write,_membar_producer)
461.2SmattSTRONG_ALIAS(_membar_write,_membar_producer)
471.2Smatt
481.2SmattENTRY_NP(_membar_sync)
491.3Smatt#ifdef _ARM_ARCH_7
501.7Sskrll	dmb	ish
511.3Smatt#else
521.6Sskrll	mov	r0, #0
531.2Smatt	mcr	p15, 0, r0, c7, c10, 5	/* Data Memory Barrier */
541.3Smatt#endif
551.2Smatt	RET
561.4SmattEND(_membar_sync)
571.2SmattATOMIC_OP_ALIAS(membar_sync,_membar_sync)
581.2SmattATOMIC_OP_ALIAS(membar_enter,_membar_sync)
591.2SmattATOMIC_OP_ALIAS(membar_exit,_membar_sync)
601.2SmattATOMIC_OP_ALIAS(membar_consumer,_membar_sync)
611.2SmattATOMIC_OP_ALIAS(membar_read,_membar_sync)
621.5SmattCRT_ALIAS(__sync_synchronize,_membar_sync)
631.2SmattSTRONG_ALIAS(_membar_enter,_membar_sync)
641.2SmattSTRONG_ALIAS(_membar_exit,_membar_sync)
651.2SmattSTRONG_ALIAS(_membar_consumer,_membar_sync)
661.2SmattSTRONG_ALIAS(_membar_read,_membar_sync)
671.2Smatt
681.2Smatt#endif /* _ARM_ARCH_6 */
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