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6e64bc845f
osreldate.h and sys/param.h were manually adjusted to not __FreeBSD_version since it will be defined by the compiler.
140 lines
No EOL
5.8 KiB
C
Vendored
140 lines
No EOL
5.8 KiB
C
Vendored
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2017 The FreeBSD Foundation
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*
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* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
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* under sponsorship from the FreeBSD Foundation.
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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 AUTHOR 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 AUTHOR 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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#ifndef _SYS_ATOMIC_COMMON_H_
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#define _SYS_ATOMIC_COMMON_H_
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#ifndef _MACHINE_ATOMIC_H_
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#error do not include this header, use machine/atomic.h
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#endif
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#include <sys/types.h>
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#define __atomic_load_bool_relaxed(p) (*(volatile _Bool *)(p))
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#define __atomic_store_bool_relaxed(p, v) \
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(*(volatile _Bool *)(p) = (_Bool)(v))
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#define __atomic_load_char_relaxed(p) (*(volatile u_char *)(p))
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#define __atomic_load_short_relaxed(p) (*(volatile u_short *)(p))
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#define __atomic_load_int_relaxed(p) (*(volatile u_int *)(p))
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#define __atomic_load_long_relaxed(p) (*(volatile u_long *)(p))
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#define __atomic_load_8_relaxed(p) (*(volatile uint8_t *)(p))
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#define __atomic_load_16_relaxed(p) (*(volatile uint16_t *)(p))
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#define __atomic_load_32_relaxed(p) (*(volatile uint32_t *)(p))
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#define __atomic_load_64_relaxed(p) (*(volatile uint64_t *)(p))
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#define __atomic_store_char_relaxed(p, v) \
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(*(volatile u_char *)(p) = (u_char)(v))
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#define __atomic_store_short_relaxed(p, v) \
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(*(volatile u_short *)(p) = (u_short)(v))
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#define __atomic_store_int_relaxed(p, v) \
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(*(volatile u_int *)(p) = (u_int)(v))
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#define __atomic_store_long_relaxed(p, v) \
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(*(volatile u_long *)(p) = (u_long)(v))
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#define __atomic_store_8_relaxed(p, v) \
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(*(volatile uint8_t *)(p) = (uint8_t)(v))
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#define __atomic_store_16_relaxed(p, v) \
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(*(volatile uint16_t *)(p) = (uint16_t)(v))
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#define __atomic_store_32_relaxed(p, v) \
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(*(volatile uint32_t *)(p) = (uint32_t)(v))
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#define __atomic_store_64_relaxed(p, v) \
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(*(volatile uint64_t *)(p) = (uint64_t)(v))
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/*
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* When _Generic is available, try to provide some type checking.
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*/
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#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \
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__has_extension(c_generic_selections)
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#define atomic_load_bool(p) \
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_Generic(*(p), _Bool: __atomic_load_bool_relaxed(p))
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#define atomic_store_bool(p, v) \
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_Generic(*(p), _Bool: __atomic_store_bool_relaxed(p, v))
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#define __atomic_load_generic(p, t, ut, n) \
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_Generic(*(p), \
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t: __atomic_load_ ## n ## _relaxed(p), \
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ut: __atomic_load_ ## n ## _relaxed(p))
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#define __atomic_store_generic(p, v, t, ut, n) \
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_Generic(*(p), \
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t: __atomic_store_ ## n ## _relaxed(p, v), \
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ut: __atomic_store_ ## n ## _relaxed(p, v))
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#else
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#define atomic_load_bool(p) \
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__atomic_load_bool_relaxed(p)
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#define atomic_store_bool(p, v) \
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__atomic_store_bool_relaxed(p, v)
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#define __atomic_load_generic(p, t, ut, n) \
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__atomic_load_ ## n ## _relaxed(p)
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#define __atomic_store_generic(p, v, t, ut, n) \
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__atomic_store_ ## n ## _relaxed(p, v)
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#endif
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#define atomic_load_char(p) __atomic_load_generic(p, char, u_char, char)
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#define atomic_load_short(p) __atomic_load_generic(p, short, u_short, short)
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#define atomic_load_int(p) __atomic_load_generic(p, int, u_int, int)
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#define atomic_load_long(p) __atomic_load_generic(p, long, u_long, long)
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#define atomic_load_8(p) __atomic_load_generic(p, int8_t, uint8_t, 8)
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#define atomic_load_16(p) __atomic_load_generic(p, int16_t, uint16_t, 16)
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#define atomic_load_32(p) __atomic_load_generic(p, int32_t, uint32_t, 32)
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#ifdef __LP64__
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#define atomic_load_64(p) __atomic_load_generic(p, int64_t, uint64_t, 64)
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#endif
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#define atomic_store_char(p, v) \
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__atomic_store_generic(p, v, char, u_char, char)
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#define atomic_store_short(p, v) \
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__atomic_store_generic(p, v, short, u_short, short)
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#define atomic_store_int(p, v) \
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__atomic_store_generic(p, v, int, u_int, int)
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#define atomic_store_long(p, v) \
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__atomic_store_generic(p, v, long, u_long, long)
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#define atomic_store_8(p, v) \
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__atomic_store_generic(p, v, int8_t, uint8_t, 8)
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#define atomic_store_16(p, v) \
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__atomic_store_generic(p, v, int16_t, uint16_t, 16)
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#define atomic_store_32(p, v) \
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__atomic_store_generic(p, v, int32_t, uint32_t, 32)
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#ifdef __LP64__
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#define atomic_store_64(p, v) \
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__atomic_store_generic(p, v, int64_t, uint64_t, 64)
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#endif
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#define atomic_load_ptr(p) (*(volatile __typeof(*p) *)(p))
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#define atomic_store_ptr(p, v) (*(volatile __typeof(*p) *)(p) = (v))
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/*
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* Currently all architectures provide acquire and release fences on their own,
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* but they don't provide consume. Kludge below allows relevant code to stop
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* openly resorting to the stronger acquire fence, to be sorted out.
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*/
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#define atomic_load_consume_ptr(p) \
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((__typeof(*p)) atomic_load_acq_ptr((uintptr_t *)p))
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#define atomic_interrupt_fence() __compiler_membar()
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#endif /* !_SYS_ATOMIC_COMMON_H_ */ |