1*0a6a1f1dSLionel Sambuc/* $NetBSD: membar_ops.S,v 1.6 2014/03/28 21:32:41 skrll Exp $ */ 2b6cbf720SGianluca Guida/*- 3b6cbf720SGianluca Guida * Copyright (c) 2008 The NetBSD Foundation, Inc. 4b6cbf720SGianluca Guida * All rights reserved. 5b6cbf720SGianluca Guida * 6b6cbf720SGianluca Guida * This code is derived from software contributed to The NetBSD Foundation 7b6cbf720SGianluca Guida * by Matt Thomas <matt@3am-software.com> 8b6cbf720SGianluca Guida * 9b6cbf720SGianluca Guida * Redistribution and use in source and binary forms, with or without 10b6cbf720SGianluca Guida * modification, are permitted provided that the following conditions 11b6cbf720SGianluca Guida * are met: 12b6cbf720SGianluca Guida * 1. Redistributions of source code must retain the above copyright 13b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer. 14b6cbf720SGianluca Guida * 2. Redistributions in binary form must reproduce the above copyright 15b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer in the 16b6cbf720SGianluca Guida * documentation and/or other materials provided with the distribution. 17b6cbf720SGianluca Guida * 18b6cbf720SGianluca Guida * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19b6cbf720SGianluca Guida * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20b6cbf720SGianluca Guida * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21b6cbf720SGianluca Guida * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22b6cbf720SGianluca Guida * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23b6cbf720SGianluca Guida * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24b6cbf720SGianluca Guida * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25b6cbf720SGianluca Guida * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26b6cbf720SGianluca Guida * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27b6cbf720SGianluca Guida * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28b6cbf720SGianluca Guida * POSSIBILITY OF SUCH DAMAGE. 29b6cbf720SGianluca Guida */ 30b6cbf720SGianluca Guida 31b6cbf720SGianluca Guida#include "atomic_op_asm.h" 32b6cbf720SGianluca Guida 33b6cbf720SGianluca Guida#ifdef _ARM_ARCH_6 34b6cbf720SGianluca Guida 35b6cbf720SGianluca GuidaENTRY_NP(_membar_producer) 36f14fb602SLionel Sambuc#ifdef _ARM_ARCH_7 37f14fb602SLionel Sambuc dsb 38f14fb602SLionel Sambuc#else 39*0a6a1f1dSLionel Sambuc mov r0, #0 40b6cbf720SGianluca Guida mcr p15, 0, r0, c7, c10, 4 /* Data Synchronization Barrier */ 41f14fb602SLionel Sambuc#endif 42b6cbf720SGianluca Guida RET 43b6cbf720SGianluca GuidaEND(_membar_producer) 44b6cbf720SGianluca GuidaATOMIC_OP_ALIAS(membar_producer,_membar_producer) 45b6cbf720SGianluca GuidaATOMIC_OP_ALIAS(membar_write,_membar_producer) 46b6cbf720SGianluca GuidaSTRONG_ALIAS(_membar_write,_membar_producer) 47b6cbf720SGianluca Guida 48b6cbf720SGianluca GuidaENTRY_NP(_membar_sync) 49f14fb602SLionel Sambuc#ifdef _ARM_ARCH_7 50f14fb602SLionel Sambuc dmb 51f14fb602SLionel Sambuc#else 52*0a6a1f1dSLionel Sambuc mov r0, #0 53b6cbf720SGianluca Guida mcr p15, 0, r0, c7, c10, 5 /* Data Memory Barrier */ 54f14fb602SLionel Sambuc#endif 55b6cbf720SGianluca Guida RET 56b6cbf720SGianluca GuidaEND(_membar_sync) 57b6cbf720SGianluca GuidaATOMIC_OP_ALIAS(membar_sync,_membar_sync) 58b6cbf720SGianluca GuidaATOMIC_OP_ALIAS(membar_enter,_membar_sync) 59b6cbf720SGianluca GuidaATOMIC_OP_ALIAS(membar_exit,_membar_sync) 60b6cbf720SGianluca GuidaATOMIC_OP_ALIAS(membar_consumer,_membar_sync) 61b6cbf720SGianluca GuidaATOMIC_OP_ALIAS(membar_read,_membar_sync) 62*0a6a1f1dSLionel SambucCRT_ALIAS(__sync_synchronize,_membar_sync) 63b6cbf720SGianluca GuidaSTRONG_ALIAS(_membar_enter,_membar_sync) 64b6cbf720SGianluca GuidaSTRONG_ALIAS(_membar_exit,_membar_sync) 65b6cbf720SGianluca GuidaSTRONG_ALIAS(_membar_consumer,_membar_sync) 66b6cbf720SGianluca GuidaSTRONG_ALIAS(_membar_read,_membar_sync) 67b6cbf720SGianluca Guida 68b6cbf720SGianluca Guida#endif /* _ARM_ARCH_6 */ 69