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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-03-14 WangShun first version
*/
#ifndef __RT_ATOMIC_H__
#define __RT_ATOMIC_H__
rt_atomic_t rt_hw_atomic_load(volatile rt_atomic_t *ptr);
void rt_hw_atomic_store(volatile rt_atomic_t *ptr, rt_atomic_t val);
rt_atomic_t rt_hw_atomic_add(volatile rt_atomic_t *ptr, rt_atomic_t val);
rt_atomic_t rt_hw_atomic_sub(volatile rt_atomic_t *ptr, rt_atomic_t val);
rt_atomic_t rt_hw_atomic_and(volatile rt_atomic_t *ptr, rt_atomic_t val);
rt_atomic_t rt_hw_atomic_or(volatile rt_atomic_t *ptr, rt_atomic_t val);
rt_atomic_t rt_hw_atomic_xor(volatile rt_atomic_t *ptr, rt_atomic_t val);
rt_atomic_t rt_hw_atomic_exchange(volatile rt_atomic_t *ptr, rt_atomic_t val);
void rt_hw_atomic_flag_clear(volatile rt_atomic_t *ptr);
rt_atomic_t rt_hw_atomic_flag_test_and_set(volatile rt_atomic_t *ptr);
rt_atomic_t rt_hw_atomic_compare_exchange_strong(volatile rt_atomic_t *ptr, rt_atomic_t *old, rt_atomic_t new);
#if defined(RT_USING_STDC_ATOMIC)
#ifndef __STDC_NO_ATOMICS__
#define rt_atomic_load(ptr) atomic_load(ptr)
#define rt_atomic_store(ptr, v) atomic_store(ptr, v)
#define rt_atomic_add(ptr, v) atomic_fetch_add(ptr, v)
#define rt_atomic_sub(ptr, v) atomic_fetch_sub(ptr, v)
#define rt_atomic_and(ptr, v) atomic_fetch_and(ptr, v)
#define rt_atomic_or(ptr, v) atomic_fetch_or(ptr, v)
#define rt_atomic_xor(ptr, v) atomic_fetch_xor(ptr, v)
#define rt_atomic_exchange(ptr, v) atomic_exchange(ptr, v)
#define rt_atomic_flag_clear(ptr) atomic_flag_clear(ptr)
#define rt_atomic_flag_test_and_set(ptr) atomic_flag_test_and_set(ptr)
#define rt_atomic_compare_exchange_strong(ptr, v,des) atomic_compare_exchange_strong(ptr, v ,des)
#else
#error "The standard library C doesn't support the atomic operation"
#endif /* __STDC_NO_ATOMICS__ */
#elif defined(RT_USING_HW_ATOMIC)
#define rt_atomic_load(ptr) rt_hw_atomic_load(ptr)
#define rt_atomic_store(ptr, v) rt_hw_atomic_store(ptr, v)
#define rt_atomic_add(ptr, v) rt_hw_atomic_add(ptr, v)
#define rt_atomic_sub(ptr, v) rt_hw_atomic_sub(ptr, v)
#define rt_atomic_and(ptr, v) rt_hw_atomic_and(ptr, v)
#define rt_atomic_or(ptr, v) rt_hw_atomic_or(ptr, v)
#define rt_atomic_xor(ptr, v) rt_hw_atomic_xor(ptr, v)
#define rt_atomic_exchange(ptr, v) rt_hw_atomic_exchange(ptr, v)
#define rt_atomic_flag_clear(ptr) rt_hw_atomic_flag_clear(ptr)
#define rt_atomic_flag_test_and_set(ptr) rt_hw_atomic_flag_test_and_set(ptr)
#define rt_atomic_compare_exchange_strong(ptr, v,des) rt_hw_atomic_compare_exchange_strong(ptr, v ,des)
#else
#include <rthw.h>
#define rt_atomic_load(ptr) rt_soft_atomic_load(ptr)
#define rt_atomic_store(ptr, v) rt_soft_atomic_store(ptr, v)
#define rt_atomic_add(ptr, v) rt_soft_atomic_add(ptr, v)
#define rt_atomic_sub(ptr, v) rt_soft_atomic_sub(ptr, v)
#define rt_atomic_and(ptr, v) rt_soft_atomic_and(ptr, v)
#define rt_atomic_or(ptr, v) rt_soft_atomic_or(ptr, v)
#define rt_atomic_xor(ptr, v) rt_soft_atomic_xor(ptr, v)
#define rt_atomic_exchange(ptr, v) rt_soft_atomic_exchange(ptr, v)
#define rt_atomic_flag_clear(ptr) rt_soft_atomic_flag_clear(ptr)
#define rt_atomic_flag_test_and_set(ptr) rt_soft_atomic_flag_test_and_set(ptr)
#define rt_atomic_compare_exchange_strong(ptr, v,des) rt_soft_atomic_compare_exchange_strong(ptr, v ,des)
rt_inline rt_atomic_t rt_soft_atomic_exchange(volatile rt_atomic_t *ptr, rt_atomic_t val)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
temp = *ptr;
*ptr = val;
rt_hw_interrupt_enable(level);
return temp;
}
rt_inline rt_atomic_t rt_soft_atomic_add(volatile rt_atomic_t *ptr, rt_atomic_t val)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
temp = *ptr;
*ptr += val;
rt_hw_interrupt_enable(level);
return temp;
}
rt_inline rt_atomic_t rt_soft_atomic_sub(volatile rt_atomic_t *ptr, rt_atomic_t val)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
temp = *ptr;
*ptr -= val;
rt_hw_interrupt_enable(level);
return temp;
}
rt_inline rt_atomic_t rt_soft_atomic_xor(volatile rt_atomic_t *ptr, rt_atomic_t val)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
temp = *ptr;
*ptr = (*ptr) ^ val;
rt_hw_interrupt_enable(level);
return temp;
}
rt_inline rt_atomic_t rt_soft_atomic_and(volatile rt_atomic_t *ptr, rt_atomic_t val)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
temp = *ptr;
*ptr = (*ptr) & val;
rt_hw_interrupt_enable(level);
return temp;
}
rt_inline rt_atomic_t rt_soft_atomic_or(volatile rt_atomic_t *ptr, rt_atomic_t val)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
temp = *ptr;
*ptr = (*ptr) | val;
rt_hw_interrupt_enable(level);
return temp;
}
rt_inline rt_atomic_t rt_soft_atomic_load(volatile rt_atomic_t *ptr)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
temp = *ptr;
rt_hw_interrupt_enable(level);
return temp;
}
rt_inline void rt_soft_atomic_store(volatile rt_atomic_t *ptr, rt_atomic_t val)
{
rt_base_t level;
level = rt_hw_interrupt_disable();
*ptr = val;
rt_hw_interrupt_enable(level);
}
rt_inline rt_atomic_t rt_soft_atomic_flag_test_and_set(volatile rt_atomic_t *ptr)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
if (*ptr == 0)
{
temp = 0;
*ptr = 1;
}
else
temp = 1;
rt_hw_interrupt_enable(level);
return temp;
}
rt_inline void rt_soft_atomic_flag_clear(volatile rt_atomic_t *ptr)
{
rt_base_t level;
level = rt_hw_interrupt_disable();
*ptr = 0;
rt_hw_interrupt_enable(level);
}
rt_inline rt_atomic_t rt_soft_atomic_compare_exchange_strong(volatile rt_atomic_t *ptr1, rt_atomic_t *ptr2,
rt_atomic_t desired)
{
rt_base_t level;
rt_atomic_t temp;
level = rt_hw_interrupt_disable();
if ((*ptr1) != (*ptr2))
{
*ptr2 = *ptr1;
temp = 0;
}
else
{
*ptr1 = desired;
temp = 1;
}
rt_hw_interrupt_enable(level);
return temp;
}
#endif /* RT_USING_STDC_ATOMIC */
#endif /* __RT_ATOMIC_H__ */
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