PACIB171615

Pointer Authentication Code for instruction address, using key B

This instruction calculates and inserts a pointer authentication code for an instruction address, using two modifiers and key B. The address is in X17. The 64-bit value of modifier1 is the value in X16. The 64-bit value of modifier2 is the value in X15.

Integer
(FEAT_PAuth_LR)

313029282726252423222120191817161514131211109876543210
11011010110000011000111111111110
sfSopcode2opcodeRnRd

Encoding

PACIB171615

Decode for this encoding

if !IsFeatureImplemented(FEAT_PAuth_LR) then EndOfDecode(Decode_UNDEF); end;

Operation

X{64}(17) = AddPACIB2(X{64}(17), X{64}(16), X{64}(15));


2026-03_rel 2026-03-26 20:48:11

Copyright © 2010-2026 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.