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