1/* $NetBSD: membar_ops.S,v 1.8 2015/06/23 20:56:17 matt Exp $ */ 2 3/*- 4 * Copyright (c) 2006, 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, and by Andrew Doran. 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// If we are on building for MIPS III or later, put in SYNCs 35#if __mips >= 3 || !defined(__mips_o32) 36# define SYNC sync 37#else 38# define SYNC nop 39#endif 40 41 .text 42 .set noreorder 43 44LEAF(_membar_sync) 45 j ra 46 SYNC 47END(_membar_sync) 48 49#ifdef __OCTEON__ 50LEAF(_membar_producer) 51 j ra 52 syncw 53END(_membar_producer) 54#endif 55 56#ifdef _KERNEL 57STRONG_ALIAS(mb_read, _membar_sync) 58#ifdef __OCTEON__ 59STRONG_ALIAS(mb_write, _membar_producer) 60#else 61STRONG_ALIAS(mb_write, _membar_sync) 62#endif 63STRONG_ALIAS(mb_memory, _membar_sync) 64#endif 65 66ATOMIC_OP_ALIAS(membar_sync,_membar_sync) 67ATOMIC_OP_ALIAS(membar_enter,_membar_sync) 68STRONG_ALIAS(_membar_enter,_membar_sync) 69#ifdef __OCTEON__ 70ATOMIC_OP_ALIAS(membar_exit,_membar_producer) 71STRONG_ALIAS(_membar_exit,_membar_producer) 72STRONG_ALIAS(membar_producer,_membar_producer) 73#else 74ATOMIC_OP_ALIAS(membar_exit,_membar_sync) 75STRONG_ALIAS(_membar_exit,_membar_sync) 76ATOMIC_OP_ALIAS(membar_producer,_membar_sync) 77STRONG_ALIAS(_membar_producer,_membar_sync) 78#endif 79ATOMIC_OP_ALIAS(membar_consumer,_membar_sync) 80STRONG_ALIAS(_membar_consumer,_membar_sync) 81