__arch_cmpxchg128
__arch_cmpxchg128(ptr, o, n, __WEAK_LLSC_MB); \
__arch_cmpxchg128(ptr, o, n, ""); \
__arch_cmpxchg128((ptr), (o), (n), ".aqrl")
__arch_cmpxchg128((ptr), (o), (n), "")
return __arch_cmpxchg128(ptr, old, new, LOCK_PREFIX);
return __arch_cmpxchg128(ptr, old, new,);