Attempting to decode: 48 a7 
iclass CMPSQ	category STRINGOP	ISA-extension LONGMODE	ISA-set LONGMODE
instruction-length 2
operand-width 64
effective-operand-width 64
effective-address-width 64
stack-address-width 64
iform-enum-name CMPSQ
iform-enum-name-dispatch (zero based) 0
iclass-max-iform-dispatch 1
Nominal opcode position 1
Nominal opcode 0xa7
Operands
#   TYPE               DETAILS        VIS  RW       OC2 BITS BYTES NELEM ELEMSZ   ELEMTYPE   REGCLASS
#   ====               =======        ===  ==       === ==== ===== ===== ======   ========   ========
0   MEM0           (see below) SUPPRESSED   R         Q   64     8     1     64        INT    INVALID
1  BASE0             BASE0=RSI SUPPRESSED  RW       ASZ   64     8     1     64        INT        GPR
2   MEM1           (see below) SUPPRESSED   R         Q   64     8     1     64        INT    INVALID
3  BASE1             BASE1=RDI SUPPRESSED  RW       ASZ   64     8     1     64        INT        GPR
4   REG0           REG0=RFLAGS SUPPRESSED  RW         Y   64     8     1     64        INT      FLAGS
Memory Operands
  0    read BASE= RSI/GPR  ASZ0=64
  1    read BASE= RDI/GPR  ASZ1=64
  MemopBytes = 8
FLAGS:
   reads-rflags of-mod df-tst sf-mod zf-mod af-mod pf-mod cf-mod 
       read:                            df  mask=0x400
    written:             of sf zf af pf cf  mask=0x8d5
  undefined:                                mask=0x0
ATTRIBUTES: FIXED_BASE0 FIXED_BASE1 
Number of legacy prefixes: 1 
ISA SET: [LONGMODE]
0	CPUID GROUP NAME: [LONGMODE]
	0	CPUID RECORD NAME: [INTEL64]
		{Leaf 0x80000001, subleaf 0x00000000, EDX[29:29]} = 1