Convert pointer to capability offset from PCC, with null capability from zero semantics derives a Capability Value from a 64-bit register and PCC, and writes the result to the destination Capability register. This instruction sets the destination Capability register to zero based on the result.
| 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 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | Rn | Cd | ||||||||
| opc<1> | opc<0> | ||||||||||||||||||||||||||||||
integer d = UInt(Cd); integer n = UInt(Rn);
| <Cd> |
Is the capability name of the destination register, encoded in the "Cd" field. |
| <Xn> |
Is the 64-bit name of the source general-purpose register, encoded in the "Rn" field. |
CheckCapabilitiesEnabled(); Capability operand1 = PCC[]; bits(64) operand2 = X[n]; Capability result; if operand2 == 0 then result = CapNull(); else if CCTLR[].PCCBO == '1' then result = CapSetOffset(operand1,operand2); else result = CapSetValue(operand1,operand2); if CapIsSealed(operand1) then C[d] = CapWithTagClear(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.