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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2020 ARM Limited */
.global pac_corruptor
.text
/*
* Corrupting a single bit of the PAC ensures the authentication will fail. It
* also guarantees no possible collision. TCR_EL1.TBI0 is set by default so no
* top byte PAC is tested
*/
pac_corruptor:
paciasp
/* corrupt the top bit of the PAC */
eor lr, lr, #1 << 53
autiasp
ret