189 lines
5.1 KiB
C
189 lines
5.1 KiB
C
/*
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* Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _OPENSOLARIS_SYS_ATOMIC_H_
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#define _OPENSOLARIS_SYS_ATOMIC_H_
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#include <sys/types.h>
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#include <machine/atomic.h>
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#define casptr(_a, _b, _c) \
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atomic_cmpset_ptr((volatile uintptr_t *)(_a), \
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(uintptr_t)(_b), \
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(uintptr_t)(_c))
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#define cas32 atomic_cmpset_32
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#define atomic_sub_64 atomic_subtract_64
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#if defined(__i386__) || defined(KLD_MODULE)
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#define I386_HAVE_ATOMIC64
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#endif
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#if !defined(__LP64__) && !defined(__mips_n32) && \
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!defined(ARM_HAVE_ATOMIC64) && !defined(I386_HAVE_ATOMIC64)
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extern void atomic_add_64(volatile uint64_t *target, int64_t delta);
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extern void atomic_dec_64(volatile uint64_t *target);
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#endif
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#ifndef __sparc64__
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#if defined(__LP64__) || defined(__mips_n32) || \
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defined(ARM_HAVE_ATOMIC64) || defined(I386_HAVE_ATOMIC64)
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#define membar_producer() wmb()
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static __inline uint64_t
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atomic_cas_64(volatile uint64_t *target, uint64_t cmp, uint64_t newval)
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{
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#ifdef __i386__
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atomic_fcmpset_64(target, &cmp, newval);
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#else
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atomic_fcmpset_long(target, &cmp, newval);
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#endif
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return (cmp);
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}
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static __inline uint32_t
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atomic_cas_32(volatile uint32_t *target, uint32_t cmp, uint32_t newval)
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{
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atomic_fcmpset_int(target, &cmp, newval);
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return (cmp);
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}
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static __inline uint64_t
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atomic_add_64_nv(volatile uint64_t *target, int64_t delta)
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{
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uint64_t prev;
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prev = atomic_fetchadd_long(target, delta);
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return (prev + delta);
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}
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#else
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extern uint32_t atomic_cas_32(volatile uint32_t *target, uint32_t cmp,
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uint32_t newval);
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extern uint64_t atomic_cas_64(volatile uint64_t *target, uint64_t cmp,
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uint64_t newval);
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extern uint64_t atomic_add_64_nv(volatile uint64_t *target, int64_t delta);
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extern void membar_producer(void);
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#endif
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#endif
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extern uint8_t atomic_or_8_nv(volatile uint8_t *target, uint8_t value);
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#if defined(__sparc64__) || defined(__powerpc__) || defined(__arm__) || \
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defined(__mips__) || defined(__aarch64__) || defined(__riscv)
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extern void atomic_or_8(volatile uint8_t *target, uint8_t value);
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#else
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static __inline void
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atomic_or_8(volatile uint8_t *target, uint8_t value)
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{
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atomic_set_8(target, value);
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}
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#endif
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static __inline uint32_t
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atomic_add_32_nv(volatile uint32_t *target, int32_t delta)
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{
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return (atomic_fetchadd_32(target, delta) + delta);
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}
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static __inline uint32_t
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atomic_add_int_nv(volatile uint32_t *target, int delta)
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{
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return (atomic_add_32_nv(target, delta));
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}
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static __inline void
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atomic_dec_32(volatile uint32_t *target)
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{
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atomic_subtract_32(target, 1);
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}
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static __inline uint32_t
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atomic_dec_32_nv(volatile uint32_t *target)
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{
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return (atomic_fetchadd_32(target, -1) - 1);
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}
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#if defined(__LP64__) || defined(__mips_n32) || \
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defined(ARM_HAVE_ATOMIC64) || defined(I386_HAVE_ATOMIC64)
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static __inline void
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atomic_dec_64(volatile uint64_t *target)
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{
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atomic_subtract_64(target, 1);
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}
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#endif
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static __inline void
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atomic_inc_32(volatile uint32_t *target)
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{
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atomic_add_32(target, 1);
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}
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static __inline uint32_t
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atomic_inc_32_nv(volatile uint32_t *target)
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{
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return (atomic_add_32_nv(target, 1));
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}
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static __inline void
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atomic_inc_64(volatile uint64_t *target)
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{
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atomic_add_64(target, 1);
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}
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static __inline uint64_t
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atomic_inc_64_nv(volatile uint64_t *target)
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{
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return (atomic_add_64_nv(target, 1));
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}
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static __inline uint64_t
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atomic_dec_64_nv(volatile uint64_t *target)
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{
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return (atomic_add_64_nv(target, -1));
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}
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#if !defined(COMPAT_32BIT) && defined(__LP64__)
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static __inline void *
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atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
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{
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return ((void *)atomic_cas_64((volatile uint64_t *)target,
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(uint64_t)cmp, (uint64_t)newval));
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}
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#else
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static __inline void *
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atomic_cas_ptr(volatile void *target, void *cmp, void *newval)
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{
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return ((void *)atomic_cas_32((volatile uint32_t *)target,
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(uint32_t)cmp, (uint32_t)newval));
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}
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#endif /* !defined(COMPAT_32BIT) && defined(__LP64__) */
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#endif /* !_OPENSOLARIS_SYS_ATOMIC_H_ */
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