67 lines
2.5 KiB
C
67 lines
2.5 KiB
C
/*-
|
|
* Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Berkeley Software Design Inc's name may not be used to endorse or
|
|
* promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from BSDI $Id: mutex.h,v 2.7.2.35 2000/04/27 03:10:26 cp Exp $
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_MUTEX_H_
|
|
#define _MACHINE_MUTEX_H_
|
|
|
|
#ifdef LOCORE
|
|
|
|
/*
|
|
* Simple assembly macros to get and release mutexes.
|
|
*
|
|
* Note: All of these macros accept a "flags" argument and are analoguous
|
|
* to the mtx_lock_flags and mtx_unlock_flags general macros. If one
|
|
* desires to not pass a flag, the value 0 may be passed as second
|
|
* argument.
|
|
*
|
|
* XXX: We only have MTX_LOCK_SPIN and MTX_UNLOCK_SPIN for now, since that's
|
|
* all we use right now. We should add MTX_LOCK and MTX_UNLOCK (for sleep
|
|
* locks) in the near future, however.
|
|
*/
|
|
#define MTX_LOCK_SPIN(lck, flags) \
|
|
pushl $0 ; \
|
|
pushl $0 ; \
|
|
pushl $flags ; \
|
|
pushl $lck ; \
|
|
call _mtx_lock_spin_flags ; \
|
|
addl $0x10, %esp ; \
|
|
|
|
#define MTX_UNLOCK_SPIN(lck) \
|
|
pushl $0 ; \
|
|
pushl $0 ; \
|
|
pushl $0 ; \
|
|
pushl $lck ; \
|
|
call _mtx_unlock_spin_flags ; \
|
|
addl $0x10, %esp ; \
|
|
|
|
#endif /* LOCORE */
|
|
#endif /* __MACHINE_MUTEX_H */
|