Move System Register allows the PE to read an AArch64 System register into a general-purpose register.
| 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 | 1 | 1 | o0 | op1 | CRn | CRm | op2 | Rt | ||||||||||||||
| L | |||||||||||||||||||||||||||||||
AArch64.CheckSystemAccess('1':o0, op1, CRn, CRm, op2, Rt, L); integer t = UInt(Rt); integer sys_op0 = 2 + UInt(o0); integer sys_op1 = UInt(op1); integer sys_op2 = UInt(op2); integer sys_crn = UInt(CRn); integer sys_crm = UInt(CRm); boolean read = (L == '1');
| <Xt> |
Is the 64-bit name of the general-purpose destination register, encoded in the "Rt" field. |
| <systemreg> |
Is a System register name, encoded in the "o0:op1:CRn:CRm:op2". The System register names are defined in 'AArch64 System Registers' in the System Register XML. |
| <op0> |
Is an unsigned immediate,
encoded in
|
| <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. |
if read then X[t] = AArch64.SysRegRead(sys_op0, sys_op1, sys_crn, sys_crm, sys_op2); else AArch64.SysRegWrite(sys_op0, sys_op1, sys_crn, sys_crm, sys_op2, X[t]);
Internal version only: isa v33.11seprel, AdvSIMD v29.05, pseudocode v2021-09_rel, sve v2021-09_rc3d ; Build timestamp: 2021-10-06T11:41
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