0FC70E
ICLASS:     CMPXCHG8B
CATEGORY:   SEMAPHORE
EXTENSION:  BASE
IFORM:      CMPXCHG8B_MEMq
ISA_SET:    PENTIUMREAL
ATTRIBUTES: LOCKABLE 
SHORT:      cmpxchg8b qword ptr [rsi]
Encodable! 0FC70E
Identical re-encoding