atomic_or_16
atomic_or_16(&mp->mutex_flag, LOCK_INITED);
extern void atomic_or_16(volatile uint16_t *, uint16_t);
__ATOMIC_OPXX(atomic_or_16, uint16_t, uint16_t, "or" SUF_16, "r")
atomic_or_16(&rgnp->rgn_hmeflags, tteflag);