SYSL System instruction with result For more information, see Op0 equals 0b01, cache maintenance, TLB maintenance, and address translation instructions for the encodings of System instructions. This instruction is used by the aliases GCSPOPM op1 == '011' && CRn == '0111' && CRm == '0111' && op2 == '001' GCSSS2 op1 == '011' && CRn == '0111' && CRm == '0111' && op2 == '011' See below for details of when each alias is preferred. 1 1 0 1 0 1 0 1 0 0 1 0 1 SYSL <Xt>, #<op1>, <Cn>, <Cm>, #<op2> AArch64.CheckSystemAccess('01', op1, CRn, CRm, op2, Rt, L); constant integer t = UInt(Rt); constant integer sys_op0 = 1; constant integer sys_op1 = UInt(op1); constant integer sys_op2 = UInt(op2); constant integer sys_crn = UInt(CRn); constant integer sys_crm = UInt(CRm); <Xt> Is the 64-bit name of the general-purpose destination register, encoded in the "Rt" field. <op1> Is a 3-bit unsigned immediate, in the range 0 to 7, encoded in the "op1" field. <Cn> Is a name 'Cn', with 'n' in the range 0 to 15, encoded in the "CRn" field. <Cm> Is a name 'Cm', with 'm' in the range 0 to 15, encoded in the "CRm" field. <op2> Is a 3-bit unsigned immediate, in the range 0 to 7, encoded in the "op2" field. Alias Conditions AArch64.SysInstrWithResult(sys_op0, sys_op1, sys_crn, sys_crm, sys_op2, t);