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58ff537109
The optimized string routines are implemented in assembly, so they are not instrumented for use with KASAN. Fall back to the C version of the routines in order to improve KASAN coverage. This fixes the kasan_strings() unit test. Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com> Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20240801033725.28816-2-samuel.holland@sifive.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2013 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_STRING_H
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#define _ASM_RISCV_STRING_H
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#include <linux/types.h>
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#include <linux/linkage.h>
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#define __HAVE_ARCH_MEMSET
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extern asmlinkage void *memset(void *, int, size_t);
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extern asmlinkage void *__memset(void *, int, size_t);
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#define __HAVE_ARCH_MEMCPY
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extern asmlinkage void *memcpy(void *, const void *, size_t);
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extern asmlinkage void *__memcpy(void *, const void *, size_t);
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#define __HAVE_ARCH_MEMMOVE
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extern asmlinkage void *memmove(void *, const void *, size_t);
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extern asmlinkage void *__memmove(void *, const void *, size_t);
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#if !(defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS))
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#define __HAVE_ARCH_STRCMP
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extern asmlinkage int strcmp(const char *cs, const char *ct);
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#define __HAVE_ARCH_STRLEN
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extern asmlinkage __kernel_size_t strlen(const char *);
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#define __HAVE_ARCH_STRNCMP
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extern asmlinkage int strncmp(const char *cs, const char *ct, size_t count);
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#endif
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/* For those files which don't want to check by kasan. */
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#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
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#define memcpy(dst, src, len) __memcpy(dst, src, len)
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#define memset(s, c, n) __memset(s, c, n)
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#define memmove(dst, src, len) __memmove(dst, src, len)
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#ifndef __NO_FORTIFY
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#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
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#endif
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#endif
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#endif /* _ASM_RISCV_STRING_H */
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