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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293/* 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_KERNEL
.macro __ptrauth_keys_install_kernel_nosync tsk, tmp1, tmp2, tmp3 mov \tmp1, #THREAD_KEYS_KERNEL add \tmp1, \tsk, \tmp1 ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_KERNEL_KEY_APIA] msr_s SYS_APIAKEYLO_EL1, \tmp2 msr_s SYS_APIAKEYHI_EL1, \tmp3 .endm
.macro ptrauth_keys_install_kernel_nosync tsk, tmp1, tmp2, tmp3alternative_if ARM64_HAS_ADDRESS_AUTH __ptrauth_keys_install_kernel_nosync \tsk, \tmp1, \tmp2, \tmp3alternative_else_nop_endif .endm
.macro ptrauth_keys_install_kernel tsk, tmp1, tmp2, tmp3alternative_if ARM64_HAS_ADDRESS_AUTH __ptrauth_keys_install_kernel_nosync \tsk, \tmp1, \tmp2, \tmp3 isbalternative_else_nop_endif .endm
#else /* CONFIG_ARM64_PTR_AUTH_KERNEL */
.macro __ptrauth_keys_install_kernel_nosync tsk, tmp1, tmp2, tmp3 .endm
.macro ptrauth_keys_install_kernel_nosync tsk, tmp1, tmp2, tmp3 .endm
.macro ptrauth_keys_install_kernel tsk, tmp1, tmp2, tmp3 .endm
#endif /* CONFIG_ARM64_PTR_AUTH_KERNEL */
#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 ldp \tmp2, \tmp3, [\tmp1, #PTRAUTH_USER_KEY_APIA] msr_s SYS_APIAKEYLO_EL1, \tmp2 msr_s SYS_APIAKEYHI_EL1, \tmp3 .endm
.macro __ptrauth_keys_init_cpu tsk, tmp1, tmp2, tmp3 mrs \tmp1, id_aa64isar1_el1 ubfx \tmp1, \tmp1, #ID_AA64ISAR1_EL1_APA_SHIFT, #8 mrs_s \tmp2, SYS_ID_AA64ISAR2_EL1 ubfx \tmp2, \tmp2, #ID_AA64ISAR2_EL1_APA3_SHIFT, #4 orr \tmp1, \tmp1, \tmp2 cbz \tmp1, .Lno_addr_auth\@ mov_q \tmp1, (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | \ SCTLR_ELx_ENDA | SCTLR_ELx_ENDB) mrs \tmp2, sctlr_el1 orr \tmp2, \tmp2, \tmp1 msr sctlr_el1, \tmp2 __ptrauth_keys_install_kernel_nosync \tsk, \tmp1, \tmp2, \tmp3 isb.Lno_addr_auth\@: .endm
.macro ptrauth_keys_init_cpu tsk, tmp1, tmp2, tmp3alternative_if_not ARM64_HAS_ADDRESS_AUTH b .Lno_addr_auth\@alternative_else_nop_endif __ptrauth_keys_init_cpu \tsk, \tmp1, \tmp2, \tmp3.Lno_addr_auth\@: .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 */