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Annotation of src/common/lib/libc/atomic/atomic_store.c, Revision 1.2

1.2     ! joerg       1: /*     $NetBSD: atomic_store.c,v 1.1 2014/07/05 20:44:46 joerg Exp $   */
1.1       joerg       2:
                      3: /*-
                      4:  * Copyright (c) 2014 The NetBSD Foundation, Inc.
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  *
                     16:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     17:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     18:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     19:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     20:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     21:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     22:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     23:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     24:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     25:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     26:  * POSSIBILITY OF SUCH DAMAGE.
                     27:  */
                     28:
                     29: #include <sys/cdefs.h>
1.2     ! joerg      30: __RCSID("$NetBSD: atomic_store.c,v 1.1 2014/07/05 20:44:46 joerg Exp $");
1.1       joerg      31:
                     32: #include "atomic_op_namespace.h"
                     33:
                     34: #include <sys/types.h>
                     35: #include <sys/atomic.h>
                     36:
                     37: #define atomic_store_n(n,b) \
1.2     ! joerg      38: void __atomic_store_ ## n(volatile uint ## b ## _t *, uint ## b ## _t, int); \
1.1       joerg      39: void \
1.2     ! joerg      40: __atomic_store_ ## n(volatile uint ## b ## _t *ptr, uint ## b ## _t val, \
        !            41:                      int memmodel) \
1.1       joerg      42: { \
                     43:        membar_enter(); \
                     44:        *ptr = val; \
                     45:        membar_exit(); \
                     46: }
                     47:
                     48: atomic_store_n(1, 8)
                     49: atomic_store_n(2, 16)
                     50: atomic_store_n(4, 32)
                     51: #ifdef __HAVE_ATOMIC_CAS_64_UP
                     52: atomic_store_n(8, 64)
                     53: #endif