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39 lines
1.0 KiB
39 lines
1.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Clang Control Flow Integrity (CFI) support. |
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* |
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* Copyright (C) 2022 Google LLC |
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*/ |
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#ifndef _LINUX_CFI_H |
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#define _LINUX_CFI_H |
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#include <linux/bug.h> |
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#include <linux/module.h> |
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#ifdef CONFIG_CFI_CLANG |
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enum bug_trap_type report_cfi_failure(struct pt_regs *regs, unsigned long addr, |
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unsigned long *target, u32 type); |
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static inline enum bug_trap_type report_cfi_failure_noaddr(struct pt_regs *regs, |
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unsigned long addr) |
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{ |
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return report_cfi_failure(regs, addr, NULL, 0); |
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} |
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#ifdef CONFIG_ARCH_USES_CFI_TRAPS |
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bool is_cfi_trap(unsigned long addr); |
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#endif |
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#endif /* CONFIG_CFI_CLANG */ |
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#ifdef CONFIG_MODULES |
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#ifdef CONFIG_ARCH_USES_CFI_TRAPS |
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void module_cfi_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, |
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struct module *mod); |
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#else |
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static inline void module_cfi_finalize(const Elf_Ehdr *hdr, |
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const Elf_Shdr *sechdrs, |
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struct module *mod) {} |
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#endif /* CONFIG_ARCH_USES_CFI_TRAPS */ |
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#endif /* CONFIG_MODULES */ |
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#endif /* _LINUX_CFI_H */
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