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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic/nrf_atomic.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic/nrf_atomic.c | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic/nrf_atomic.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic/nrf_atomic.c new file mode 100644 index 0000000..8d1609f --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/atomic/nrf_atomic.c @@ -0,0 +1,447 @@ +/** + * Copyright (c) 2018 - 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 + CRITICAL_REGION_ENTER(); + if(*p_data == *p_expected) + { + *p_data = desired; + return true; + } + else + { + *p_expected = *p_data; + return false; + } + CRITICAL_REGION_EXIT(); +#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); +} + |