System instruction
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 APAS, AT, BRB, CFP, COSP, CPP, DC, DVP, GCSPOPCX, GCSPOPX, GCSPUSHM, GCSPUSHX, GCSSS1, IC, TLBI, and TRCIT.
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | op1 | CRn | CRm | op2 | Rt | ||||||||||||||
| L | |||||||||||||||||||||||||||||||
constant integer t = UInt(Rt); constant integer sys_L = UInt(L); 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);
| <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. |
| <Xt> |
Is the 64-bit name of the optional general-purpose source register, defaulting to '11111', encoded in the "Rt" field. |
| Alias | Is preferred when |
|---|---|
| APAS | op1 == '110' && CRn == '0111' && CRm == '0000' && op2 == '000' |
| AT | CRn == '0111' && CRm IN {'100x'} && SysOp(op1, '0111', CRm, op2) == Sys_AT |
| BRB | op1 == '001' && CRn == '0111' && CRm == '0010' && SysOp('001', '0111', '0010', op2) == Sys_BRB |
| CFP | op1 == '011' && CRn == '0111' && CRm == '0011' && op2 == '100' |
| COSP | op1 == '011' && CRn == '0111' && CRm == '0011' && op2 == '110' |
| CPP | op1 == '011' && CRn == '0111' && CRm == '0011' && op2 == '111' |
| DC | CRn == '0111' && SysOp(op1, '0111', CRm, op2) == Sys_DC |
| DVP | op1 == '011' && CRn == '0111' && CRm == '0011' && op2 == '101' |
| GCSPOPCX | op1 == '000' && CRn == '0111' && CRm == '0111' && op2 == '101' |
| GCSPOPX | op1 == '000' && CRn == '0111' && CRm == '0111' && op2 == '110' |
| GCSPUSHM | op1 == '011' && CRn == '0111' && CRm == '0111' && op2 == '000' |
| GCSPUSHX | op1 == '000' && CRn == '0111' && CRm == '0111' && op2 == '100' |
| GCSSS1 | op1 == '011' && CRn == '0111' && CRm == '0111' && op2 == '010' |
| IC | CRn == '0111' && SysOp(op1, '0111', CRm, op2) == Sys_IC |
| TLBI | CRn IN {'100x'} && SysOp(op1, CRn, CRm, op2) == Sys_TLBI |
| TRCIT | op1 == '011' && CRn == '0111' && CRm == '0010' && op2 == '111' |
AArch64.CheckSystemAccess(sys_op0, sys_op1, sys_crn, sys_crm, sys_op2, t, sys_L); AArch64.SysInstr(sys_op0, sys_op1, sys_crn, sys_crm, sys_op2, t);
Internal version only: aarchmrs v2024-12_rel, pseudocode v2024-12_rel ; Build timestamp: 2024-12-15T22:18
Copyright © 2010-2024 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.