db226f7ba8
This change adds the CONFIG_CFI_CLANG option, CFI error handling, and a faster look-up table for cross module CFI checks. Bug: 67506682 Change-Id: Ic009f0a629b552a0eb16e6d89808c7029e91447d Signed-off-by: Sami Tolvanen <samitolvanen@google.com> [AmitP: Rebased to newer kernels without clang LTO support] Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
39 lines
958 B
C
39 lines
958 B
C
#ifndef _LINUX_CFI_H
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#define _LINUX_CFI_H
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#include <linux/stringify.h>
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#ifdef CONFIG_CFI_CLANG
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#ifdef CONFIG_MODULES
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typedef void (*cfi_check_fn)(uint64_t, void *, void *);
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/* Compiler-generated function in each module, and the kernel */
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#define CFI_CHECK_FN __cfi_check
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#define CFI_CHECK_FN_NAME __stringify(CFI_CHECK_FN)
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extern void CFI_CHECK_FN(uint64_t, void *, void *);
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#ifdef CONFIG_CFI_CLANG_SHADOW
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extern void cfi_module_add(struct module *mod, unsigned long min_addr,
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unsigned long max_addr);
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extern void cfi_module_remove(struct module *mod, unsigned long min_addr,
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unsigned long max_addr);
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#else
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static inline void cfi_module_add(struct module *mod, unsigned long min_addr,
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unsigned long max_addr)
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{
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}
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static inline void cfi_module_remove(struct module *mod, unsigned long min_addr,
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unsigned long max_addr)
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{
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}
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#endif /* CONFIG_CFI_CLANG_SHADOW */
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#endif /* CONFIG_MODULES */
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#endif /* CONFIG_CFI_CLANG */
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#endif /* _LINUX_CFI_H */
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