membar_ops.S revision 1.4 
11.4Smatt/*	$NetBSD: membar_ops.S,v 1.4 2009/12/14 00:39:00 matt Exp $	*/
21.1Sad
31.1Sad/*-
41.1Sad * Copyright (c) 2006, 2007 The NetBSD Foundation, Inc.
51.1Sad * All rights reserved.
61.1Sad *
71.1Sad * This code is derived from software contributed to The NetBSD Foundation
81.1Sad * by Jason R. Thorpe, and by Andrew Doran.
91.1Sad *
101.1Sad * Redistribution and use in source and binary forms, with or without
111.1Sad * modification, are permitted provided that the following conditions
121.1Sad * are met:
131.1Sad * 1. Redistributions of source code must retain the above copyright
141.1Sad *    notice, this list of conditions and the following disclaimer.
151.1Sad * 2. Redistributions in binary form must reproduce the above copyright
161.1Sad *    notice, this list of conditions and the following disclaimer in the
171.1Sad *    documentation and/or other materials provided with the distribution.
181.1Sad *
191.1Sad * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
201.1Sad * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
211.1Sad * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
221.1Sad * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
231.1Sad * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
241.1Sad * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
251.1Sad * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
261.1Sad * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
271.1Sad * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
281.1Sad * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
291.1Sad * POSSIBILITY OF SUCH DAMAGE.
301.1Sad */
311.1Sad
321.1Sad#include "atomic_op_asm.h"
331.1Sad
341.4Smatt#if defined(_KERNEL)
351.4Smatt
361.1Sad#ifdef _KERNEL_OPT
371.1Sad#include "opt_cputype.h"
381.1Sad#include "opt_lockdebug.h"
391.1Sad#include "opt_multiprocessor.h"
401.1Sad#endif
411.1Sad
421.1Sad
431.1Sad#include <machine/cpu.h>
441.1Sad
451.4Smatt#if (MIPS_HAS_LLSC != 0 && defined(MULTIPROCESSOR)) || !defined(__mips_o32)
461.4Smatt#define	SYNC		sync
471.4Smatt#endif
481.4Smatt#elif !defined(__mips_o32)
491.1Sad#define	SYNC		sync
501.1Sad#endif
511.1Sad
521.1Sad	.text
531.1Sad
541.3SchsLEAF(_membar_sync)
551.4Smatt	j	ra
561.4Smatt#ifdef SYNC
571.1Sad	SYNC
581.4Smatt#else
591.1Sad	  nop
601.4Smatt#endif
611.1SadEND(_membar_sync)
621.1Sad
631.4Smatt#ifdef _KERNEL
641.4SmattSTRONG_ALIAS(mb_read, _membar_sync)
651.4SmattSTRONG_ALIAS(mb_write, _membar_sync)
661.4SmattSTRONG_ALIAS(mb_memory, _membar_sync)
671.4Smatt#endif
681.4Smatt
691.1SadATOMIC_OP_ALIAS(membar_sync,_membar_sync)
701.1SadATOMIC_OP_ALIAS(membar_enter,_membar_sync)
711.1SadSTRONG_ALIAS(_membar_enter,_membar_sync)
721.1SadATOMIC_OP_ALIAS(membar_exit,_membar_sync)
731.1SadSTRONG_ALIAS(_membar_exit,_membar_sync)
741.1SadATOMIC_OP_ALIAS(membar_producer,_membar_sync)
751.1SadSTRONG_ALIAS(_membar_producer,_membar_sync)
761.1SadATOMIC_OP_ALIAS(membar_consumer,_membar_sync)
771.1SadSTRONG_ALIAS(_membar_consumer,_membar_sync)
78