atomic_cas_8
while (atomic_cas_8(state, DCPC_INTR_FREE,
while (atomic_cas_8(state, DCPC_INTR_FREE,
} while (atomic_cas_8(&itl->itl_flags, old, new) != old);
if (atomic_cas_8(state, DCPC_INTR_FREE,
extern uint8_t atomic_cas_8(volatile uint8_t *, uint8_t, uint8_t);
__ATOMIC_OPXX(atomic_cas_8, uint8_t, "cmpxchg" SUF_8, "q")