atomic_swap_64
(void) atomic_swap_64(vptr, v);
(void) atomic_swap_64(vptr, v);
(void) atomic_swap_64(vptr, v);
(void) atomic_swap_64(vptr, v);
(void) atomic_swap_64(cpuobj, object);
(void) atomic_swap_64(cpuobj, object);
atomic_swap_64(refcount_cache, refcount));
(void) atomic_swap_64(
(void) atomic_swap_64((uint64_t *)&server->iser_die_time,
(void) atomic_swap_64(
atomic_swap_64((volatile uint64_t *)&pUM->intrFired, 0);
(void) atomic_swap_64(&ena->ena_watchdog_last_keepalive, now);
extern uint64_t atomic_swap_64(volatile uint64_t *, uint64_t);
__ATOMIC_OP64(atomic_swap_64, uint64_t, "xchg" SUF_64, "r")
ticks = atomic_swap_64(&ih_p->ih_ticks, 0);
ticks = atomic_swap_64(&ih_p->ih_ticks, 0);