1 /* 2 * Copyright (c) 2016-2017, Linaro Limited 3 * 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 20 * 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 #ifndef __ATOMIC_H 30 #define __ATOMIC_H 31 32 #include <compiler.h> 33 #include <types_ext.h> 34 35 uint32_t atomic_inc32(volatile uint32_t *v); 36 uint32_t atomic_dec32(volatile uint32_t *v); 37 38 static inline bool atomic_cas_uint(unsigned int *p, unsigned int *oval, 39 unsigned int nval) 40 { 41 return __compiler_compare_and_swap(p, oval, nval); 42 } 43 44 static inline bool atomic_cas_u32(uint32_t *p, uint32_t *oval, uint32_t nval) 45 { 46 return __compiler_compare_and_swap(p, oval, nval); 47 } 48 49 static inline unsigned int atomic_load_uint(unsigned int *p) 50 { 51 return __compiler_atomic_load(p); 52 } 53 54 static inline unsigned int atomic_load_u32(unsigned int *p) 55 { 56 return __compiler_atomic_load(p); 57 } 58 59 static inline void atomic_store_uint(unsigned int *p, unsigned int val) 60 { 61 __compiler_atomic_store(p, val); 62 } 63 64 static inline void atomic_store_u32(uint32_t *p, uint32_t val) 65 { 66 __compiler_atomic_store(p, val); 67 } 68 69 #endif /*__ATOMIC_H*/ 70