1 /* $NetBSD: atomic.h,v 1.1 2002/10/19 12:22:34 bsh Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-4-Clause 5 * 6 * Copyright (C) 2003-2004 Olivier Houchard 7 * Copyright (C) 1994-1997 Mark Brinicombe 8 * Copyright (C) 1994 Brini 9 * All rights reserved. 10 * 11 * This code is derived from software written for Brini by Mark Brinicombe 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by Brini. 24 * 4. The name of Brini may not be used to endorse or promote products 25 * derived from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR 28 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 29 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 30 * IN NO EVENT SHALL BRINI BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 33 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 34 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 35 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 36 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 * 38 * $FreeBSD$ 39 */ 40 41 #ifndef _MACHINE_ATOMIC_H_ 42 #define _MACHINE_ATOMIC_H_ 43 44 #include <machine/armreg.h> 45 46 #ifndef _KERNEL 47 #include <machine/sysarch.h> 48 #endif 49 50 #if __ARM_ARCH >= 6 51 #include <machine/atomic-v6.h> 52 #else /* < armv6 */ 53 #include <machine/atomic-v4.h> 54 #endif /* Arch >= v6 */ 55 56 static __inline int 57 atomic_load_32(volatile uint32_t *v) 58 { 59 60 return (*v); 61 } 62 63 static __inline void 64 atomic_store_32(volatile uint32_t *dst, uint32_t src) 65 { 66 *dst = src; 67 } 68 69 static __inline int 70 atomic_load_long(volatile u_long *v) 71 { 72 73 return (*v); 74 } 75 76 static __inline void 77 atomic_store_long(volatile u_long *dst, u_long src) 78 { 79 *dst = src; 80 } 81 82 #define atomic_clear_ptr atomic_clear_32 83 #define atomic_clear_acq_ptr atomic_clear_acq_32 84 #define atomic_clear_rel_ptr atomic_clear_rel_32 85 #define atomic_set_ptr atomic_set_32 86 #define atomic_set_acq_ptr atomic_set_acq_32 87 #define atomic_set_rel_ptr atomic_set_rel_32 88 #define atomic_fcmpset_ptr atomic_fcmpset_32 89 #define atomic_fcmpset_rel_ptr atomic_fcmpset_rel_32 90 #define atomic_fcmpset_acq_ptr atomic_fcmpset_acq_32 91 #define atomic_cmpset_ptr atomic_cmpset_32 92 #define atomic_cmpset_acq_ptr atomic_cmpset_acq_32 93 #define atomic_cmpset_rel_ptr atomic_cmpset_rel_32 94 #define atomic_load_acq_ptr atomic_load_acq_32 95 #define atomic_store_ptr atomic_store_32 96 #define atomic_store_rel_ptr atomic_store_rel_32 97 #define atomic_swap_ptr atomic_swap_32 98 #define atomic_readandclear_ptr atomic_readandclear_32 99 100 #define atomic_add_int atomic_add_32 101 #define atomic_add_acq_int atomic_add_acq_32 102 #define atomic_add_rel_int atomic_add_rel_32 103 #define atomic_subtract_int atomic_subtract_32 104 #define atomic_subtract_acq_int atomic_subtract_acq_32 105 #define atomic_subtract_rel_int atomic_subtract_rel_32 106 #define atomic_clear_int atomic_clear_32 107 #define atomic_clear_acq_int atomic_clear_acq_32 108 #define atomic_clear_rel_int atomic_clear_rel_32 109 #define atomic_set_int atomic_set_32 110 #define atomic_set_acq_int atomic_set_acq_32 111 #define atomic_set_rel_int atomic_set_rel_32 112 #define atomic_fcmpset_int atomic_fcmpset_32 113 #define atomic_fcmpset_acq_int atomic_fcmpset_acq_32 114 #define atomic_fcmpset_rel_int atomic_fcmpset_rel_32 115 #define atomic_cmpset_int atomic_cmpset_32 116 #define atomic_cmpset_acq_int atomic_cmpset_acq_32 117 #define atomic_cmpset_rel_int atomic_cmpset_rel_32 118 #define atomic_fetchadd_int atomic_fetchadd_32 119 #define atomic_readandclear_int atomic_readandclear_32 120 #define atomic_load_acq_int atomic_load_acq_32 121 #define atomic_store_rel_int atomic_store_rel_32 122 #define atomic_swap_int atomic_swap_32 123 124 #endif /* _MACHINE_ATOMIC_H_ */ 125