Attempting to decode: cf 
iclass IRETD	category RET	ISA-extension BASE	ISA-set I386
instruction-length 1
operand-width 32
effective-operand-width 32
effective-address-width 32
stack-address-width 32
iform-enum-name IRETD
iform-enum-name-dispatch (zero based) 0
iclass-max-iform-dispatch 1
Nominal opcode position 0
Nominal opcode 0xcf
Operands
#   TYPE               DETAILS        VIS  RW       OC2 BITS BYTES NELEM ELEMSZ   ELEMTYPE   REGCLASS
#   ====               =======        ===  ==       === ==== ===== ===== ======   ========   ========
0   REG0         REG0=STACKPOP SUPPRESSED  RW      SPW5  160    20     1    160        INT     PSEUDO
1   REG1              REG1=EIP SUPPRESSED   W         Y   32     4     1     32        INT         IP
2   MEM0           (see below) SUPPRESSED   R      SPW5  160    20     1    160        INT    INVALID
3  BASE0             BASE0=ESP SUPPRESSED  RW       SSZ   32     4     1     32        INT        GPR
4   REG2           REG2=EFLAGS SUPPRESSED  RW         Y   32     4     1     32        INT      FLAGS
Memory Operands
  0    read SEG= SS BASE= ESP/GPR  ASZ0=32
  MemopBytes = 20
FLAGS:
   reads-rflags id-pop vip-pop vif-pop ac-pop vm-tst vm-pop rf-pop nt-tst nt-pop iopl-tst iopl-pop of-pop df-pop if-pop tf-pop sf-pop zf-pop af-pop pf-pop cf-pop 
       read:                    iopl vm nt  mask=0x27000
    written: of sf zf af pf cf df vif iopl if ac vm rf nt tf id vip  mask=0x3f7fd5
  undefined:                                mask=0x0
ATTRIBUTES: FIXED_BASE0 NOTSX SCALABLE STACKPOP0 
ISA SET: [I386]