/** | |
* Copyright (c) 2018, Nordic Semiconductor ASA | |
* | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without modification, | |
* are permitted provided that the following conditions are met: | |
* | |
* 1. Redistributions of source code must retain the above copyright notice, this | |
* 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 | |
* conditions and the following disclaimer in the documentation and/or other | |
* 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. | |
* | |
* 5. Any software provided in binary form under this license must not be reverse | |
* engineered, decompiled, modified and/or disassembled. | |
* | |
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS | |
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE | |
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | |
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT | |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* | |
*/ | |
#include "nrf_atomic.h" | |
#ifndef NRF_ATOMIC_USE_BUILD_IN | |
#if (defined(__GNUC__) && defined(WIN32)) | |
#define NRF_ATOMIC_USE_BUILD_IN 1 | |
#else | |
#define NRF_ATOMIC_USE_BUILD_IN 0 | |
#endif | |
#endif // NRF_ATOMIC_USE_BUILD_IN | |
#if ((__CORTEX_M >= 0x03U) || (__CORTEX_SC >= 300U)) | |
#define STREX_LDREX_PRESENT | |
#else | |
#include "app_util_platform.h" | |
#endif | |
#if (NRF_ATOMIC_USE_BUILD_IN == 0) && defined(STREX_LDREX_PRESENT) | |
#include "nrf_atomic_internal.h" | |
#endif | |
uint32_t nrf_atomic_u32_fetch_store(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_exchange_n(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
uint32_t old_val = *p_data; | |
*p_data = value; | |
CRITICAL_REGION_EXIT(); | |
return old_val; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_store(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
__atomic_store_n(p_data, value, __ATOMIC_SEQ_CST); | |
return value; | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
*p_data = value; | |
CRITICAL_REGION_EXIT(); | |
return value; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_fetch_or(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_fetch_or(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
uint32_t old_val = *p_data; | |
*p_data |= value; | |
CRITICAL_REGION_EXIT(); | |
return old_val; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_or(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_or_fetch(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
*p_data |= value; | |
uint32_t new_value = *p_data; | |
CRITICAL_REGION_EXIT(); | |
return new_value; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_fetch_and(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_fetch_and(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
uint32_t old_val = *p_data; | |
*p_data &= value; | |
CRITICAL_REGION_EXIT(); | |
return old_val; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_and(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_and_fetch(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
*p_data &= value; | |
uint32_t new_value = *p_data; | |
CRITICAL_REGION_EXIT(); | |
return new_value; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_fetch_xor(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_fetch_xor(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
uint32_t old_val = *p_data; | |
*p_data ^= value; | |
CRITICAL_REGION_EXIT(); | |
return old_val; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_xor(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_xor_fetch(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
*p_data ^= value; | |
uint32_t new_value = *p_data; | |
CRITICAL_REGION_EXIT(); | |
return new_value; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_fetch_add(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_fetch_add(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
uint32_t old_val = *p_data; | |
*p_data += value; | |
CRITICAL_REGION_EXIT(); | |
return old_val; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_add(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_add_fetch(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
*p_data += value; | |
uint32_t new_value = *p_data; | |
CRITICAL_REGION_EXIT(); | |
return new_value; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_fetch_sub(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_fetch_sub(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
uint32_t old_val = *p_data; | |
*p_data -= value; | |
CRITICAL_REGION_EXIT(); | |
return old_val; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_sub(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_sub_fetch(p_data, value, __ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
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; | |
#else | |
CRITICAL_REGION_ENTER(); | |
*p_data -= value; | |
uint32_t new_value = *p_data; | |
CRITICAL_REGION_EXIT(); | |
return new_value; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
bool nrf_atomic_u32_cmp_exch(nrf_atomic_u32_t * p_data, | |
uint32_t * p_expected, | |
uint32_t desired) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
return __atomic_compare_exchange(p_data, | |
p_expected, | |
&desired, | |
1, | |
__ATOMIC_SEQ_CST, | |
__ATOMIC_SEQ_CST); | |
#elif defined(STREX_LDREX_PRESENT) | |
return nrf_atomic_internal_cmp_exch(p_data, p_expected, desired); | |
#else | |
bool ret; | |
CRITICAL_REGION_ENTER(); | |
if (*p_data == *p_expected) | |
{ | |
*p_data = desired; | |
ret = true; | |
} | |
else | |
{ | |
*p_expected = *p_data; | |
ret = false; | |
} | |
CRITICAL_REGION_EXIT(); | |
return ret; | |
#endif | |
} | |
uint32_t nrf_atomic_u32_fetch_sub_hs(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
uint32_t expected = *p_data; | |
uint32_t new_val; | |
bool success; | |
do | |
{ | |
if (expected >= value) | |
{ | |
new_val = expected - value; | |
} | |
else | |
{ | |
new_val = expected; | |
} | |
success = __atomic_compare_exchange(p_data, | |
&expected, | |
&new_val, | |
1, | |
__ATOMIC_SEQ_CST, | |
__ATOMIC_SEQ_CST); | |
} while(!success); | |
return expected; | |
#elif defined(STREX_LDREX_PRESENT) | |
uint32_t old_val; | |
uint32_t new_val; | |
NRF_ATOMIC_OP(sub_hs, old_val, new_val, p_data, value); | |
UNUSED_PARAMETER(old_val); | |
UNUSED_PARAMETER(new_val); | |
return old_val; | |
#else | |
CRITICAL_REGION_ENTER(); | |
uint32_t old_val = *p_data; | |
*p_data -= value; | |
CRITICAL_REGION_EXIT(); | |
return old_val; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_u32_sub_hs(nrf_atomic_u32_t * p_data, uint32_t value) | |
{ | |
#if NRF_ATOMIC_USE_BUILD_IN | |
uint32_t expected = *p_data; | |
uint32_t new_val; | |
bool success; | |
do | |
{ | |
if (expected >= value) | |
{ | |
new_val = expected - value; | |
} | |
else | |
{ | |
new_val = expected; | |
} | |
success = __atomic_compare_exchange(p_data, | |
&expected, | |
&new_val, | |
1, | |
__ATOMIC_SEQ_CST, | |
__ATOMIC_SEQ_CST); | |
} while(!success); | |
return new_val; | |
#elif defined(STREX_LDREX_PRESENT) | |
uint32_t old_val; | |
uint32_t new_val; | |
NRF_ATOMIC_OP(sub_hs, old_val, new_val, p_data, value); | |
UNUSED_PARAMETER(old_val); | |
UNUSED_PARAMETER(new_val); | |
return new_val; | |
#else | |
CRITICAL_REGION_ENTER(); | |
*p_data -= value; | |
uint32_t new_value = *p_data; | |
CRITICAL_REGION_EXIT(); | |
return new_value; | |
#endif //NRF_ATOMIC_USE_BUILD_IN | |
} | |
uint32_t nrf_atomic_flag_set_fetch(nrf_atomic_flag_t * p_data) | |
{ | |
return nrf_atomic_u32_fetch_or(p_data, 1); | |
} | |
uint32_t nrf_atomic_flag_set(nrf_atomic_flag_t * p_data) | |
{ | |
return nrf_atomic_u32_or(p_data, 1); | |
} | |
uint32_t nrf_atomic_flag_clear_fetch(nrf_atomic_flag_t * p_data) | |
{ | |
return nrf_atomic_u32_fetch_and(p_data, 0); | |
} | |
uint32_t nrf_atomic_flag_clear(nrf_atomic_flag_t * p_data) | |
{ | |
return nrf_atomic_u32_and(p_data, 0); | |
} | |