#define __enable_interrupt() _enable_interrupts()
#define __disable_interrupt() _disable_interrupts()
#define __bic_SR_register(x) _bic_SR_register(x)
#define __bic_SR_register_on_exit(x) _bic_SR_register_on_exit(x)
#define __bis_SR_register(x) _bis_SR_register(x)
#define __bis_SR_register_on_exit(x) _bis_SR_register_on_exit(x)
#define __get_SR_register() _get_SR_register()
#define __get_SR_register_on_exit() _get_SR_register_on_exit()
#define __swap_bytes(x) _swap_bytes(x)
#define __no_operation() _nop()
这些函数该怎么用？
