50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef __ASM_ASM_POINTER_AUTH_H
|
||
|
|
#define __ASM_ASM_POINTER_AUTH_H
|
||
|
|
|
||
|
|
#include <asm/alternative.h>
|
||
|
|
#include <asm/asm-offsets.h>
|
||
|
|
#include <asm/cpufeature.h>
|
||
|
|
#include <asm/sysreg.h>
|
||
|
|
|
||
|
|
#ifdef CONFIG_ARM64_PTR_AUTH
|
||
|
|
/*
|
||
|
|
* thread.keys_user.ap* as offset exceeds the #imm offset range
|
||
|
|
* so use the base value of ldp as thread.keys_user and offset as
|
||
|
|
* thread.keys_user.ap*.
|
||
|
|
*/
|
||
|
|
.macro ptrauth_keys_install_user tsk, tmp1, tmp2, tmp3
|
||
|
|
mov \tmp1, #THREAD_KEYS_USER
|
||
|
|
add \tmp1, \tsk, \tmp1
|
||
|
|
alternative_if_not ARM64_HAS_ADDRESS_AUTH
|
||
|
|
b .Laddr_auth_skip_\@
|
||
|
|
alternative_else_nop_endif
|
||
|
|
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APIA]
|
||
|
|
msr_s SYS_APIAKEYLO_EL1, \tmp2
|
||
|
|
msr_s SYS_APIAKEYHI_EL1, \tmp3
|
||
|
|
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APIB]
|
||
|
|
msr_s SYS_APIBKEYLO_EL1, \tmp2
|
||
|
|
msr_s SYS_APIBKEYHI_EL1, \tmp3
|
||
|
|
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APDA]
|
||
|
|
msr_s SYS_APDAKEYLO_EL1, \tmp2
|
||
|
|
msr_s SYS_APDAKEYHI_EL1, \tmp3
|
||
|
|
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APDB]
|
||
|
|
msr_s SYS_APDBKEYLO_EL1, \tmp2
|
||
|
|
msr_s SYS_APDBKEYHI_EL1, \tmp3
|
||
|
|
.Laddr_auth_skip_\@:
|
||
|
|
alternative_if ARM64_HAS_GENERIC_AUTH
|
||
|
|
ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APGA]
|
||
|
|
msr_s SYS_APGAKEYLO_EL1, \tmp2
|
||
|
|
msr_s SYS_APGAKEYHI_EL1, \tmp3
|
||
|
|
alternative_else_nop_endif
|
||
|
|
.endm
|
||
|
|
|
||
|
|
#else /* CONFIG_ARM64_PTR_AUTH */
|
||
|
|
|
||
|
|
.macro ptrauth_keys_install_user tsk, tmp1, tmp2, tmp3
|
||
|
|
.endm
|
||
|
|
|
||
|
|
#endif /* CONFIG_ARM64_PTR_AUTH */
|
||
|
|
|
||
|
|
#endif /* __ASM_ASM_POINTER_AUTH_H */
|