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/*-
* Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``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 THE AUTHORS OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _OPENSOLARIS_SYS_ATOMIC_H_
#define _OPENSOLARIS_SYS_ATOMIC_H_
#include <sys/types.h>
#include <machine/atomic.h>
#define casptr(_a, _b, _c) \
atomic_cmpset_ptr((volatile uintptr_t *)(_a), (uintptr_t)(_b), (uintptr_t) (_c))
#define cas32 atomic_cmpset_32
#ifndef __LP64__
extern void atomic_add_64(volatile uint64_t *target, int64_t delta);
extern void atomic_dec_64(volatile uint64_t *target);
extern void *atomic_cas_ptr(volatile void *target, void *cmp, void *newval);
#endif
#ifndef __sparc64__
extern uint64_t atomic_cas_64(volatile uint64_t *target, uint64_t cmp,
uint64_t newval);
#endif
extern uint64_t atomic_add_64_nv(volatile uint64_t *target, int64_t delta);
extern uint8_t atomic_or_8_nv(volatile uint8_t *target, uint8_t value);
extern void membar_producer(void);
#if defined(__sparc64__) || defined(__powerpc__) || defined(__arm__) || \
defined(__mips__)
extern void atomic_or_8(volatile uint8_t *target, uint8_t value);
#else
static __inline void
atomic_or_8(volatile uint8_t *target, uint8_t value)
{
atomic_set_8(target, value);
}
#endif
static __inline uint32_t
atomic_add_32_nv(volatile uint32_t *target, int32_t delta)
{
return (atomic_fetchadd_32(target, delta) + delta);
}
static __inline u_int
atomic_add_int_nv(volatile u_int *target, int delta)
{
return (atomic_add_32_nv(target, delta));
}
static __inline void
atomic_dec_32(volatile uint32_t *target)
{
atomic_subtract_32(target, 1);
}
static __inline uint32_t
atomic_dec_32_nv(volatile uint32_t *target)
{
return (atomic_fetchadd_32(target, -1) - 1);
}
#ifdef __LP64__
static __inline void
atomic_dec_64(volatile uint64_t *target)
{
atomic_subtract_64(target, 1);
}
#endif
static __inline void
atomic_inc_32(volatile uint32_t *target)
{
atomic_add_32(target, 1);
}
static __inline uint32_t
atomic_inc_32_nv(volatile uint32_t *target)
{
return (atomic_add_32_nv(target, 1));
}
static __inline void
atomic_inc_64(volatile uint64_t *target)
{
atomic_add_64(target, 1);
}
static __inline uint64_t
atomic_inc_64_nv(volatile uint64_t *target)
{
return (atomic_add_64_nv(target, 1));
}
#ifdef __LP64__
static __inline void *
atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
{
return ((void *)atomic_cas_64((volatile uint64_t *)target, (uint64_t)cmp,
(uint64_t)newval));
}
#endif
#endif /* !_OPENSOLARIS_SYS_ATOMIC_H_ */
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