atomic_utils_arch.h

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/*
 * Copyright (C) 2020 Otto-von-Guericke-Universität Magdeburg
 *
 * This file is subject to the terms and conditions of the GNU Lesser General
 * Public License v2.1. See the file LICENSE in the top level directory for more
 * details.
 */
 
#ifndef ATOMIC_UTILS_ARCH_H
#define ATOMIC_UTILS_ARCH_H
 
#include "periph_cpu.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifndef DOXYGEN
 
/* clang provides no built-in atomic access to regular variables */
#ifndef __clang__
 
#define HAS_ATOMIC_LOAD_U8
static inline uint8_t atomic_load_u8(const volatile uint8_t *var)
{
    return __atomic_load_1(var, __ATOMIC_SEQ_CST);
}
 
#define HAS_ATOMIC_LOAD_U16
static inline uint16_t atomic_load_u16(const volatile uint16_t *var)
{
    return __atomic_load_2(var, __ATOMIC_SEQ_CST);
}
 
#define HAS_ATOMIC_LOAD_U32
static inline uint32_t atomic_load_u32(const volatile uint32_t *var)
{
    return __atomic_load_4(var, __ATOMIC_SEQ_CST);
}
 
#define HAS_ATOMIC_STORE_U8
static inline void atomic_store_u8(volatile uint8_t *dest, uint8_t val)
{
    __atomic_store_1(dest, val, __ATOMIC_SEQ_CST);
}
 
#define HAS_ATOMIC_STORE_U16
static inline void atomic_store_u16(volatile uint16_t *dest, uint16_t val)
{
    __atomic_store_2(dest, val, __ATOMIC_SEQ_CST);
}
 
#define HAS_ATOMIC_STORE_U32
static inline void atomic_store_u32(volatile uint32_t *dest, uint32_t val)
{
    __atomic_store_4(dest, val, __ATOMIC_SEQ_CST);
}
 
#endif  /* __clang__ */
 
#endif  /* DOXYGEN */
 
#ifdef __cplusplus
}
#endif
 
#endif /* ATOMIC_UTILS_ARCH_H */