Set the Capability Tag field writes the source Capability register to the destination Capability register with the Tag field set to a value based on a 64-bit 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 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | Rm | 1 | 0 | 0 | 0 | 0 | 0 | Cn | Cd | ||||||||||||
integer d = UInt(Cd); integer n = UInt(Cn); integer m = UInt(Rm);
| <Cd|CSP> |
Is the capability name of the destination register or stack pointer, encoded in the "Cd" field. |
| <Cn|CSP> |
Is the capability name of the source register or stack pointer, encoded in the "Cn" field. |
| <Xm> |
Is the 64-bit name of the source general-purpose register, encoded in the "Rm" field. |
if PSTATE.EL == EL0 then UNDEFINED; CheckCapabilitiesEnabled(); Capability operand1 = if n == 31 then CSP[] else C[n]; bits(64) newtag = X[m]; Capability result; if newtag<0> == '1' && CapIsSystemAccessEnabled() && !IsTagSettingDisabled() then result = CapWithTagSet(operand1); else result = CapWithTagClear(operand1); if d == 31 then CSP[] = result; else C[d] = result;
Internal version only: isa v32.13, AdvSIMD v29.04, pseudocode morello-2022-01_rc2, capabilities morello-2022-01_rc2 ; Build timestamp: 2022-01-11T11:23
Copyright © 2010-2022 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.