1/* $NetBSD: membar_ops.S,v 1.3 2008/05/25 15:56:12 chs 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#ifdef _KERNEL_OPT 35#include "opt_cputype.h" 36#include "opt_lockdebug.h" 37#include "opt_multiprocessor.h" 38#endif 39 40#if defined(_KERNEL) 41 42#include <machine/cpu.h> 43 44#if MIPS_HAS_LLSC != 0 && defined(MULTIPROCESSOR) 45#define SYNC sync 46#else 47#define SYNC /* nothing */ 48#endif 49 50 .text 51 52LEAF(_membar_sync) 53 SYNC 54 j ra 55 nop 56END(_membar_sync) 57 58ATOMIC_OP_ALIAS(membar_sync,_membar_sync) 59ATOMIC_OP_ALIAS(membar_enter,_membar_sync) 60STRONG_ALIAS(_membar_enter,_membar_sync) 61ATOMIC_OP_ALIAS(membar_exit,_membar_sync) 62STRONG_ALIAS(_membar_exit,_membar_sync) 63ATOMIC_OP_ALIAS(membar_producer,_membar_sync) 64STRONG_ALIAS(_membar_producer,_membar_sync) 65ATOMIC_OP_ALIAS(membar_consumer,_membar_sync) 66STRONG_ALIAS(_membar_consumer,_membar_sync) 67 68#else /* _KERNEL */ 69 70#endif /* _KERNEL */ 71