初始版本
This commit is contained in:
xiaozhengsheng
395
modules/nrfx/soc/nrfx_atomic.c
Normal file
395
modules/nrfx/soc/nrfx_atomic.c
Normal file
@@ -0,0 +1,395 @@
|
||||
/**
|
||||
* Copyright (c) 2018 - 2020, 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 "nrfx_atomic.h"
|
||||
|
||||
#ifndef NRFX_ATOMIC_USE_BUILT_IN
|
||||
#define NRFX_ATOMIC_USE_BUILT_IN 0
|
||||
#endif // NRFX_ATOMIC_USE_BUILT_IN
|
||||
|
||||
#if ((__CORTEX_M >= 0x03U) || (__CORTEX_SC >= 300U))
|
||||
#define NRFX_ATOMIC_STREX_LDREX_PRESENT
|
||||
#endif
|
||||
|
||||
#if (NRFX_ATOMIC_USE_BUILT_IN == 0) && defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
#include "nrfx_atomic_internal.h"
|
||||
#endif
|
||||
|
||||
uint32_t nrfx_atomic_u32_fetch_store(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_exchange_n(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(mov, old_val, new_val, p_data, value);
|
||||
(void) new_val;
|
||||
return old_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
uint32_t old_val = *p_data;
|
||||
*p_data = value;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return old_val;
|
||||
#endif // NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_store(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
__atomic_store_n(p_data, value, __ATOMIC_SEQ_CST);
|
||||
return value;
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(mov, old_val, new_val, p_data, value);
|
||||
(void) old_val;
|
||||
return new_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
*p_data = value;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return value;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_fetch_or(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_fetch_or(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(orr, old_val, new_val, p_data, value);
|
||||
(void) new_val;
|
||||
return old_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
uint32_t old_val = *p_data;
|
||||
*p_data |= value;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return old_val;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_or(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_or_fetch(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(orr, old_val, new_val, p_data, value);
|
||||
(void) old_val;
|
||||
return new_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
*p_data |= value;
|
||||
uint32_t new_value = *p_data;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return new_value;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_fetch_and(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_fetch_and(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(and, old_val, new_val, p_data, value);
|
||||
(void) new_val;
|
||||
return old_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
uint32_t old_val = *p_data;
|
||||
*p_data &= value;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return old_val;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_and(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_and_fetch(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(and, old_val, new_val, p_data, value);
|
||||
(void) old_val;
|
||||
return new_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
*p_data &= value;
|
||||
uint32_t new_value = *p_data;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return new_value;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_fetch_xor(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_fetch_xor(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(eor, old_val, new_val, p_data, value);
|
||||
(void) new_val;
|
||||
return old_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
uint32_t old_val = *p_data;
|
||||
*p_data ^= value;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return old_val;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_xor(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_xor_fetch(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(eor, old_val, new_val, p_data, value);
|
||||
(void) old_val;
|
||||
return new_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
*p_data ^= value;
|
||||
uint32_t new_value = *p_data;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return new_value;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_fetch_add(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_fetch_add(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(add, old_val, new_val, p_data, value);
|
||||
(void) new_val;
|
||||
return old_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
uint32_t old_val = *p_data;
|
||||
*p_data += value;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return old_val;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_add(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_add_fetch(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(add, old_val, new_val, p_data, value);
|
||||
(void) old_val;
|
||||
return new_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
*p_data += value;
|
||||
uint32_t new_value = *p_data;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return new_value;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_fetch_sub(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_fetch_sub(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(sub, old_val, new_val, p_data, value);
|
||||
(void) new_val;
|
||||
return old_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
uint32_t old_val = *p_data;
|
||||
*p_data -= value;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return old_val;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_sub(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_sub_fetch(p_data, value, __ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(sub, old_val, new_val, p_data, value);
|
||||
(void) old_val;
|
||||
return new_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
*p_data -= value;
|
||||
uint32_t new_value = *p_data;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return new_value;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
bool nrfx_atomic_u32_cmp_exch(nrfx_atomic_u32_t * p_data,
|
||||
uint32_t * p_expected,
|
||||
uint32_t desired)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
return __atomic_compare_exchange(p_data,
|
||||
p_expected,
|
||||
&desired,
|
||||
1,
|
||||
__ATOMIC_SEQ_CST,
|
||||
__ATOMIC_SEQ_CST);
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
return nrfx_atomic_internal_cmp_exch(p_data, p_expected, desired);
|
||||
#else
|
||||
bool result;
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
if (*p_data == *p_expected)
|
||||
{
|
||||
*p_data = desired;
|
||||
result = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
*p_expected = *p_data;
|
||||
result = false;
|
||||
}
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return result;
|
||||
#endif
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_fetch_sub_hs(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
uint32_t expected = *p_data;
|
||||
uint32_t new_val;
|
||||
do {
|
||||
if (expected >= value)
|
||||
{
|
||||
new_val = expected - value;
|
||||
}
|
||||
else
|
||||
{
|
||||
new_val = expected;
|
||||
}
|
||||
} while (!__atomic_compare_exchange(p_data, &expected, &new_val,
|
||||
1, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST));
|
||||
return expected;
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(sub_hs, old_val, new_val, p_data, value);
|
||||
(void) new_val;
|
||||
return old_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
uint32_t old_val = *p_data;
|
||||
*p_data -= value;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return old_val;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_u32_sub_hs(nrfx_atomic_u32_t * p_data, uint32_t value)
|
||||
{
|
||||
#if NRFX_ATOMIC_USE_BUILT_IN
|
||||
uint32_t expected = *p_data;
|
||||
uint32_t new_val;
|
||||
do {
|
||||
if (expected >= value)
|
||||
{
|
||||
new_val = expected - value;
|
||||
}
|
||||
else
|
||||
{
|
||||
new_val = expected;
|
||||
}
|
||||
} while (!__atomic_compare_exchange(p_data, &expected, &new_val,
|
||||
1, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST));
|
||||
return new_val;
|
||||
#elif defined(NRFX_ATOMIC_STREX_LDREX_PRESENT)
|
||||
uint32_t old_val;
|
||||
uint32_t new_val;
|
||||
NRFX_ATOMIC_OP(sub_hs, old_val, new_val, p_data, value);
|
||||
(void) old_val;
|
||||
return new_val;
|
||||
#else
|
||||
NRFX_CRITICAL_SECTION_ENTER();
|
||||
*p_data -= value;
|
||||
uint32_t new_value = *p_data;
|
||||
NRFX_CRITICAL_SECTION_EXIT();
|
||||
return new_value;
|
||||
#endif //NRFX_ATOMIC_USE_BUILT_IN
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_flag_set_fetch(nrfx_atomic_flag_t * p_data)
|
||||
{
|
||||
return nrfx_atomic_u32_fetch_or(p_data, 1);
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_flag_set(nrfx_atomic_flag_t * p_data)
|
||||
{
|
||||
return nrfx_atomic_u32_or(p_data, 1);
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_flag_clear_fetch(nrfx_atomic_flag_t * p_data)
|
||||
{
|
||||
return nrfx_atomic_u32_fetch_and(p_data, 0);
|
||||
}
|
||||
|
||||
uint32_t nrfx_atomic_flag_clear(nrfx_atomic_flag_t * p_data)
|
||||
{
|
||||
return nrfx_atomic_u32_and(p_data, 0);
|
||||
}
|
||||
Reference in New Issue
Block a user