Attempting to decode: 0f aa 
iclass RSM	category SYSRET	ISA-extension BASE	ISA-set I486
instruction-length 2
operand-width 32
effective-operand-width 32
effective-address-width 32
stack-address-width 32
iform-enum-name RSM
iform-enum-name-dispatch (zero based) 0
iclass-max-iform-dispatch 1
Nominal opcode position 1
Nominal opcode 0xaa
Operands
#   TYPE               DETAILS        VIS  RW       OC2 BITS BYTES NELEM ELEMSZ   ELEMTYPE   REGCLASS
#   ====               =======        ===  ==       === ==== ===== ===== ======   ========   ========
0   REG0              REG0=EIP SUPPRESSED   W         Y   32     4     1     32        INT         IP
1   REG1           REG1=EFLAGS SUPPRESSED   W         Y   32     4     1     32        INT      FLAGS
Memory Operands
  MemopBytes = 0
FLAGS:
  must-write-rflags id-mod vip-mod vif-mod ac-mod vm-mod rf-mod nt-mod iopl-mod of-mod df-mod if-mod tf-mod sf-mod zf-mod af-mod pf-mod cf-mod 
       read:                                mask=0x0
    written: of sf zf af pf cf df vif iopl if ac vm rf nt tf id vip  mask=0x3f7fd5
  undefined:                                mask=0x0
ATTRIBUTES: NOTSX 
ISA SET: [I486]