1 /* $NetBSD: atomic_store.c,v 1.5 2024/02/04 16:19:12 christos Exp $ */ 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> 30 __RCSID("$NetBSD: atomic_store.c,v 1.5 2024/02/04 16:19:12 christos Exp $"); 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) \ 38 void __atomic_store_ ## n(volatile void *, uint ## b ## _t, int); \ 39 /*ARGSUSED*/ \ 40 void \ 41 __atomic_store_ ## n(volatile void *ptr, uint ## b ## _t val, \ 42 int memmodel __unused) \ 43 { \ 44 membar_release(); \ 45 *(volatile uint ## b ## _t *)ptr = val; \ 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 54