/*
* Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
/*
* Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies and
* that both the copyright notice and this permission notice appear in
* supporting documentation.
*
* OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
* NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#define __APPLE_API_PRIVATE
#include <machine/cpu_capabilities.h>
#undef __APPLE_API_PRIVATE
#if defined(__ppc__) || defined(__ppc64__)
#import <architecture/ppc/asm_help.h>
#import <architecture/ppc/pseudo_inst.h>
/* void spin_lock(int *p) * Lock the lock pointed to by `p'. Spin (possibly forever) until
* the lock is available. Test and test and set logic used.
* These routines have moved to the comm page.
*/
.text
.align 2
LEAF(__spin_lock_try)
ba _COMM_PAGE_SPINLOCK_TRY
END(__spin_lock_try)
.globl _spin_lock
LEAF(__spin_lock)
_spin_lock:
ba _COMM_PAGE_SPINLOCK_LOCK
END(__spin_lock)
/* void spin_unlock(int *p) * Unlock the lock pointed to by p.
*/
.globl _spin_unlock
LEAF(__spin_unlock)
_spin_unlock:
ba _COMM_PAGE_SPINLOCK_UNLOCK
END(__spin_unlock)
#elif defined(__i386__)
#include <architecture/i386/asm_help.h>
/*
* void
* _spin_lock(p)
* int *p * Lock the lock pointed to by p. Spin (possibly forever) until the next
* lock is available.
*/
TEXT
ALIGN
LEAF(__spin_lock_try, 0)
movl $(_COMM_PAGE_SPINLOCK_TRY), %eax
jmpl *%eax
ALIGN
.globl _spin_lock
LEAF(__spin_lock, 0)
_spin_lock:
movl $(_COMM_PAGE_SPINLOCK_LOCK), %eax
jmpl *%eax
/*
* void
* _spin_unlock(p)
* int *p * Unlock the lock pointed to by p.
*/
ALIGN
.globl _spin_unlock
LEAF(__spin_unlock, 0)
_spin_unlock:
movl $(_COMM_PAGE_SPINLOCK_UNLOCK), %eax
jmpl *%eax
#elif defined(__x86_64__)
#include <architecture/i386/asm_help.h>
/*
* void
* _spin_lock(p)
* int *p * Lock the lock pointed to by p. Spin (possibly forever) until the next
* lock is available.
*/
TEXT
ALIGN
LEAF(__spin_lock_try, 0)
movq $(_COMM_PAGE_SPINLOCK_TRY), %rax
jmp *%rax
ALIGN
.globl _spin_lock
LEAF(__spin_lock, 0)
_spin_lock:
movq $(_COMM_PAGE_SPINLOCK_LOCK), %rax
jmp *%rax
/*
* void
* _spin_unlock(p)
* int *p * Unlock the lock pointed to by p.
*/
ALIGN
.globl _spin_unlock
LEAF(__spin_unlock, 0)
_spin_unlock:
movl $0, (%rdi)
ret
#else
#error spin_locks not defined for this architecture
#endif