Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
41 lines
979 B
C
41 lines
979 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_COMPILER_H
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#define __ASM_COMPILER_H
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#ifdef ARM64_ASM_ARCH
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#define ARM64_ASM_PREAMBLE ".arch " ARM64_ASM_ARCH "\n"
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#else
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#define ARM64_ASM_PREAMBLE
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#endif
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#define xpaclri(ptr) \
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({ \
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register unsigned long __xpaclri_ptr asm("x30") = (ptr); \
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\
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asm( \
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ARM64_ASM_PREAMBLE \
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" hint #7\n" \
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: "+r" (__xpaclri_ptr)); \
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\
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__xpaclri_ptr; \
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})
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#ifdef CONFIG_ARM64_PTR_AUTH_KERNEL
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#define ptrauth_strip_kernel_insn_pac(ptr) xpaclri(ptr)
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#else
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#define ptrauth_strip_kernel_insn_pac(ptr) (ptr)
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#endif
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#ifdef CONFIG_ARM64_PTR_AUTH
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#define ptrauth_strip_user_insn_pac(ptr) xpaclri(ptr)
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#else
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#define ptrauth_strip_user_insn_pac(ptr) (ptr)
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#endif
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#if !defined(CONFIG_BUILTIN_RETURN_ADDRESS_STRIPS_PAC)
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#define __builtin_return_address(val) \
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(void *)(ptrauth_strip_kernel_insn_pac((unsigned long)__builtin_return_address(val)))
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#endif
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#endif /* __ASM_COMPILER_H */
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