mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-04 00:51:42 +01:00
112 lines
3.6 KiB
C
112 lines
3.6 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
//replacement for gcc built-in functions
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include "esp_stdatomic.h"
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "sdkconfig.h"
|
|
|
|
#if SOC_CPU_CORES_NUM > 1
|
|
#if !CONFIG_STDATOMIC_S32C1I_SPIRAM_WORKAROUND
|
|
_Static_assert(HAS_ATOMICS_32, "32-bit atomics should be supported if SOC_CPU_CORES_NUM > 1");
|
|
#endif // CONFIG_STDATOMIC_S32C1I_SPIRAM_WORKAROUND
|
|
// Only need to implement 64-bit atomics here. Use a single global portMUX_TYPE spinlock
|
|
// to emulate the atomics.
|
|
static portMUX_TYPE s_atomic_lock = portMUX_INITIALIZER_UNLOCKED;
|
|
#endif
|
|
|
|
#if !HAS_ATOMICS_32
|
|
|
|
_Static_assert(sizeof(unsigned char) == 1, "atomics require a 1-byte type");
|
|
_Static_assert(sizeof(short unsigned int) == 2, "atomics require a 2-bytes type");
|
|
_Static_assert(sizeof(unsigned int) == 4, "atomics require a 4-bytes type");
|
|
|
|
ATOMIC_FUNCTIONS(1, unsigned char)
|
|
ATOMIC_FUNCTIONS(2, short unsigned int)
|
|
ATOMIC_FUNCTIONS(4, unsigned int)
|
|
|
|
#elif __riscv_atomic == 1
|
|
|
|
bool CLANG_ATOMIC_SUFFIX(__atomic_always_lock_free)(unsigned int size, const volatile void *)
|
|
{
|
|
return size <= sizeof(int);
|
|
}
|
|
CLANG_DECLARE_ALIAS(__atomic_always_lock_free)
|
|
|
|
bool CLANG_ATOMIC_SUFFIX(__atomic_is_lock_free)(unsigned int size, const volatile void *)
|
|
{
|
|
return size <= sizeof(int);
|
|
}
|
|
CLANG_DECLARE_ALIAS(__atomic_is_lock_free)
|
|
|
|
#endif // !HAS_ATOMICS_32
|
|
|
|
#if !HAS_ATOMICS_64
|
|
|
|
#if CONFIG_STDATOMIC_S32C1I_SPIRAM_WORKAROUND
|
|
#undef _ATOMIC_HW_STUB_OP_FUNCTION
|
|
#undef _ATOMIC_HW_STUB_EXCHANGE
|
|
#undef _ATOMIC_HW_STUB_STORE
|
|
#undef _ATOMIC_HW_STUB_CMP_EXCHANGE
|
|
#undef _ATOMIC_HW_STUB_LOAD
|
|
#undef _ATOMIC_HW_STUB_SYNC_BOOL_CMP_EXCHANGE
|
|
#undef _ATOMIC_HW_STUB_SYNC_VAL_CMP_EXCHANGE
|
|
#undef _ATOMIC_HW_STUB_SYNC_LOCK_TEST_AND_SET
|
|
#undef _ATOMIC_HW_STUB_SYNC_LOCK_RELEASE
|
|
|
|
#define _ATOMIC_HW_STUB_OP_FUNCTION(n, type, name_1, name_2)
|
|
#define _ATOMIC_HW_STUB_EXCHANGE(n, type)
|
|
#define _ATOMIC_HW_STUB_STORE(n, type)
|
|
#define _ATOMIC_HW_STUB_CMP_EXCHANGE(n, type)
|
|
#define _ATOMIC_HW_STUB_LOAD(n, type)
|
|
#define _ATOMIC_HW_STUB_SYNC_BOOL_CMP_EXCHANGE(n, type)
|
|
#define _ATOMIC_HW_STUB_SYNC_VAL_CMP_EXCHANGE(n, type)
|
|
#define _ATOMIC_HW_STUB_SYNC_LOCK_TEST_AND_SET(n, type)
|
|
#define _ATOMIC_HW_STUB_SYNC_LOCK_RELEASE(n, type)
|
|
#endif // CONFIG_STDATOMIC_S32C1I_SPIRAM_WORKAROUND
|
|
|
|
_Static_assert(sizeof(long long unsigned int) == 8, "atomics require a 8-bytes type");
|
|
|
|
ATOMIC_FUNCTIONS(8, long long unsigned int)
|
|
|
|
#endif // !HAS_ATOMICS_64
|
|
|
|
// Clang generates calls to the __atomic_load/__atomic_store functions for object size more then 4 bytes
|
|
void CLANG_ATOMIC_SUFFIX(__atomic_load)(size_t size, const volatile void *src, void *dest, int model)
|
|
{
|
|
_ATOMIC_ENTER_CRITICAL();
|
|
memcpy(dest, (const void *)src, size);
|
|
_ATOMIC_EXIT_CRITICAL();
|
|
}
|
|
CLANG_DECLARE_ALIAS(__atomic_load)
|
|
|
|
void CLANG_ATOMIC_SUFFIX(__atomic_store)(size_t size, volatile void *dest, void *src, int model)
|
|
{
|
|
_ATOMIC_ENTER_CRITICAL();
|
|
memcpy((void *)dest, (const void *)src, size);
|
|
_ATOMIC_EXIT_CRITICAL();
|
|
}
|
|
CLANG_DECLARE_ALIAS(__atomic_store)
|
|
|
|
bool CLANG_ATOMIC_SUFFIX(__atomic_compare_exchange)(size_t size, volatile void *ptr, void *expected, void *desired, int success_memorder, int failure_memorder)
|
|
{
|
|
bool ret = false;
|
|
_ATOMIC_ENTER_CRITICAL();
|
|
if (!memcmp((void *)ptr, expected, size)) {
|
|
memcpy((void *)ptr, (const void *)desired, size);
|
|
ret = true;
|
|
} else {
|
|
memcpy((void *)expected, (const void *)ptr, size);
|
|
}
|
|
_ATOMIC_EXIT_CRITICAL();
|
|
return ret;
|
|
}
|
|
CLANG_DECLARE_ALIAS(__atomic_compare_exchange)
|