89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2021-04-27 peterfan Add copyright header.
|
|
*/
|
|
|
|
#include <rthw.h>
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
/*
|
|
* override gcc builtin atomic function for std::atomic<int64_t>, std::atomic<uint64_t>
|
|
* @see https://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html
|
|
*/
|
|
uint64_t __atomic_load_8(volatile void *ptr, int memorder)
|
|
{
|
|
volatile uint64_t *val_ptr = (volatile uint64_t *)ptr;
|
|
rt_base_t level;
|
|
uint64_t tmp;
|
|
level = rt_hw_interrupt_disable();
|
|
tmp = *val_ptr;
|
|
rt_hw_interrupt_enable(level);
|
|
return tmp;
|
|
}
|
|
|
|
void __atomic_store_8(volatile void *ptr, uint64_t val, int memorder)
|
|
{
|
|
volatile uint64_t *val_ptr = (volatile uint64_t *)ptr;
|
|
rt_base_t level;
|
|
level = rt_hw_interrupt_disable();
|
|
*val_ptr = val;
|
|
rt_hw_interrupt_enable(level);
|
|
}
|
|
|
|
uint64_t __atomic_exchange_8(volatile void *ptr, uint64_t val, int memorder)
|
|
{
|
|
volatile uint64_t *val_ptr = (volatile uint64_t *)ptr;
|
|
rt_base_t level;
|
|
uint64_t tmp;
|
|
level = rt_hw_interrupt_disable();
|
|
tmp = *val_ptr;
|
|
*val_ptr = val;
|
|
rt_hw_interrupt_enable(level);
|
|
return tmp;
|
|
}
|
|
|
|
bool __atomic_compare_exchange_8(volatile void *ptr, volatile void *expected, uint64_t desired, bool weak, int success_memorder, int failure_memorder)
|
|
{
|
|
volatile uint64_t *val_ptr = (volatile uint64_t *)ptr;
|
|
volatile uint64_t *expected_ptr = (volatile uint64_t *)expected;
|
|
rt_base_t level;
|
|
bool exchanged;
|
|
level = rt_hw_interrupt_disable();
|
|
if (*val_ptr == *expected_ptr)
|
|
{
|
|
*val_ptr = desired;
|
|
exchanged = true;
|
|
}
|
|
else
|
|
{
|
|
*expected_ptr = *val_ptr;
|
|
exchanged = false;
|
|
}
|
|
rt_hw_interrupt_enable(level);
|
|
return exchanged;
|
|
}
|
|
|
|
#define __atomic_fetch_op_8(OPNAME, OP) \
|
|
uint64_t __atomic_fetch_##OPNAME##_8(volatile void *ptr, uint64_t val, int memorder) {\
|
|
volatile uint64_t* val_ptr = (volatile uint64_t*)ptr;\
|
|
rt_base_t level;\
|
|
uint64_t tmp;\
|
|
level = rt_hw_interrupt_disable();\
|
|
tmp = *val_ptr;\
|
|
*val_ptr OP##= val;\
|
|
rt_hw_interrupt_enable(level);\
|
|
return tmp;\
|
|
}
|
|
|
|
__atomic_fetch_op_8(add, +)
|
|
__atomic_fetch_op_8(sub, -)
|
|
__atomic_fetch_op_8( and, &)
|
|
__atomic_fetch_op_8( or, |)
|
|
__atomic_fetch_op_8(xor, ^)
|