Move two adjacent general-purpose registers to System register
This instruction allows the PE to write an AArch64 128-bit System register from two adjacent 64-bit general-purpose registers.
| 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 | 1 | 0 | 1 | o0 | op1 | CRn | CRm | op2 | Rt | ||||||||||||||
| L | |||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SYSREG128) then EndOfDecode(Decode_UNDEF); if Rt<0> == '1' then EndOfDecode(Decode_UNDEF); constant integer t = UInt(Rt); constant integer t2 = UInt(Rt+1); constant integer sys_L = UInt(L); constant integer sys_op0 = 2 + UInt(o0); constant integer sys_op1 = UInt(op1); constant integer sys_op2 = UInt(op2); constant integer sys_crn = UInt(CRn); constant integer sys_crm = UInt(CRm);
| <systemreg> |
Is a System register name, encoded in "o0:op1:CRn:CRm:op2". |
| <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. |
| <Xt> |
Is the 64-bit name of the first general-purpose source register, encoded in the "Rt" field. |
| <Xt+1> |
Is the 64-bit name of the second general-purpose source register, encoded as "Rt" +1. |
AArch64.CheckSystemAccess(sys_op0, sys_op1, sys_crn, sys_crm, sys_op2, t, sys_L); AArch64.SysRegWrite128(sys_op0, sys_op1, sys_crn, sys_crm, sys_op2, t, t2);
Internal version only: aarchmrs v2024-12_rel, pseudocode v2024-12_rel ; Build timestamp: 2024-12-15T22:18
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