_atomic_cas_8_ras
if (rasctl(RAS_ADDR(_atomic_cas_8_ras), RAS_SIZE(_atomic_cas_8_ras),
_atomic_cas_8_fn = _atomic_cas_8_ras;
extern uint8_t _atomic_cas_8_ras(volatile uint8_t *, uint8_t, uint8_t);
RAS_DECL(_atomic_cas_8_ras);