/**
 * Copyright (c) 2016 - 2017, Nordic Semiconductor ASA
 * 
 * All rights reserved.
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 * are permitted provided that the following conditions are met:
 * 
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 *    list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
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 *    materials provided with the distribution.
 * 
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 * 
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
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/**@file
 *
 * @defgroup nrf_atomic Atomic operations API
 * @ingroup app_atfifo
 * @{
 *
 * @brief @tagAPI52 This module implements C11 stdatomic.h simplified API.
          At this point only Cortex-M3/M4 cores are supported (LDREX/STREX instructions).
 *        Atomic types are limited to @ref nrf_atomic_u32_t and @ref nrf_atomic_flag_t.
 */

#ifndef NRF_ATOMIC_H__
#define NRF_ATOMIC_H__

#include "sdk_common.h"
#include "nrf_atomic_internal.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @brief Stores value to an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value to store
 *
 * @return Old value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_store_fetch(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(mov, old_val, new_val, p_data, value);

    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return old_val;
}

/**
 * @brief Stores value to an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value to store
 *
 * @return New value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_store(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(mov, old_val, new_val, p_data, value);

    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return new_val;
}

/**
 * @brief Logical OR operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand OR operation
 *
 * @return Old value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_or_fetch(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(orr, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return old_val;
}

/**
 * @brief Logical OR operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand OR operation
 *
 * @return New value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_or(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(orr, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return new_val;
}

/**
 * @brief Logical AND operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand AND operation
 *
 * @return Old value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_and_fetch(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(and, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return old_val;
}

/**
 * @brief Logical AND operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand AND operation
 *
 * @return New value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_and(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(and, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return new_val;
}

/**
 * @brief Logical XOR operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand XOR operation
 *
 * @return Old value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_xor_fetch(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(eor, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return old_val;
}

/**
 * @brief Logical XOR operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand XOR operation
 *
 * @return New value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_xor(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(eor, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return new_val;
}

/**
 * @brief Arithmetic ADD operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand ADD operation
 *
 * @return Old value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_add_fetch(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(add, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return old_val;
}

/**
 * @brief Arithmetic ADD operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand ADD operation
 *
 * @return New value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_add(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(add, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return new_val;
}

/**
 * @brief Arithmetic SUB operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand SUB operation
 *
 * @return Old value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_sub_fetch(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(sub, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return old_val;
}

/**
 * @brief Arithmetic SUB operation on an atomic object
 *
 * @param[in] p_data    Atomic memory pointer
 * @param[in] value     Value of second operand SUB operation
 *
 * @return New value stored into atomic object
 * */
static inline uint32_t nrf_atomic_u32_sub(nrf_atomic_u32_t * p_data, uint32_t value)
{
    uint32_t old_val;
    uint32_t new_val;

    NRF_ATOMIC_OP(sub, old_val, new_val, p_data, value);
    UNUSED_PARAMETER(old_val);
    UNUSED_PARAMETER(new_val);
    return new_val;
}

/**************************************************************************************************/

/**
 * @brief Logic one bit flag set operation on an atomic object
 *
 * @param[in] p_data    Atomic flag memory pointer
 *
 * @return Old flag value
 * */
static inline uint32_t nrf_atomic_flag_set_fetch(nrf_atomic_flag_t * p_data)
{
    return nrf_atomic_u32_or_fetch(p_data, 1);
}

/**
 * @brief Logic one bit flag set operation on an atomic object
 *
 * @param[in] p_data    Atomic flag memory pointer
 *
 * @return New flag value
 * */
static inline uint32_t nrf_atomic_flag_set(nrf_atomic_flag_t * p_data)
{
    return nrf_atomic_u32_or(p_data, 1);
}

/**
 * @brief Logic one bit flag clear operation on an atomic object
 *
 * @param[in] p_data    Atomic flag memory pointer
 *
 * @return Old flag value
 * */
static inline uint32_t nrf_atomic_flag_clear_fetch(nrf_atomic_flag_t * p_data)
{
    return nrf_atomic_u32_and_fetch(p_data, 0);
}

/**
 * @brief Logic one bit flag clear operation on an atomic object
 *
 * @param[in] p_data    Atomic flag memory pointer
 *
 * @return New flag value
 * */
static inline uint32_t nrf_atomic_flag_clear(nrf_atomic_flag_t * p_data)
{
    return nrf_atomic_u32_and(p_data, 0);
}

#ifdef __cplusplus
}
#endif

#endif /* NRF_ATOMIC_H__ */

/** @} */