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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _ASM_ATOMIC_H
#define _ASM_ATOMIC_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(__lint) && defined(__GNUC__)
#if defined(__amd64)
extern __inline__ void atomic_or_long(ulong_t *target, ulong_t bits)
{
__asm__ __volatile__(
"lock; orq %1, (%0)"
: /* no output */
: "r" (target), "r" (bits));
}
extern __inline__ void atomic_and_long(ulong_t *target, ulong_t bits)
{
__asm__ __volatile__(
"lock; andq %1, (%0)"
: /* no output */
: "r" (target), "r" (bits));
}
#ifdef notdef
extern __inline__ uint64_t cas64(uint64_t *target, uint64_t cmp,
uint64_t newval)
{
uint64_t retval;
__asm__ __volatile__(
"movq %2, %%rax; lock; cmpxchgq %3, (%1)"
: "=a" (retval)
: "r" (target), "r" (cmp), "r" (newval));
return (retval);
}
#endif
#elif defined(__i386)
extern __inline__ void atomic_or_long(ulong_t *target, ulong_t bits)
{
__asm__ __volatile__(
"lock; orl %1, (%0)"
: /* no output */
: "r" (target), "r" (bits));
}
extern __inline__ void atomic_and_long(ulong_t *target, ulong_t bits)
{
__asm__ __volatile__(
"lock; andl %1, (%0)"
: /* no output */
: "r" (target), "r" (bits));
}
#else
#error "port me"
#endif
#endif /* !__lint && __GNUC__ */
#ifdef __cplusplus
}
#endif
#endif /* _ASM_ATOMIC_H */
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