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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef __ASM_ARM_STRING_H |
| 3 | #define __ASM_ARM_STRING_H |
| 4 | |
| 5 | /* |
| 6 | * We don't do inline string functions, since the |
| 7 | * optimised inline asm versions are not small. |
| 8 | * |
| 9 | * The __underscore versions of some functions are for KASan to be able |
| 10 | * to replace them with instrumented versions. |
| 11 | */ |
| 12 | |
| 13 | #define __HAVE_ARCH_STRRCHR |
| 14 | extern char * strrchr(const char * s, int c); |
| 15 | |
| 16 | #define __HAVE_ARCH_STRCHR |
| 17 | extern char * strchr(const char * s, int c); |
| 18 | |
| 19 | #define __HAVE_ARCH_MEMCPY |
| 20 | extern void * memcpy(void *, const void *, __kernel_size_t); |
| 21 | extern void *__memcpy(void *dest, const void *src, __kernel_size_t n); |
| 22 | |
| 23 | #define __HAVE_ARCH_MEMMOVE |
| 24 | extern void * memmove(void *, const void *, __kernel_size_t); |
| 25 | extern void *__memmove(void *dest, const void *src, __kernel_size_t n); |
| 26 | |
| 27 | #define __HAVE_ARCH_MEMCHR |
| 28 | extern void * memchr(const void *, int, __kernel_size_t); |
| 29 | |
| 30 | #define __HAVE_ARCH_MEMSET |
| 31 | extern void * memset(void *, int, __kernel_size_t); |
| 32 | extern void *__memset(void *s, int c, __kernel_size_t n); |
| 33 | |
| 34 | #define __HAVE_ARCH_MEMSET32 |
| 35 | extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t); |
| 36 | static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n) |
| 37 | { |
| 38 | return __memset32(p, v, n * 4); |
| 39 | } |
| 40 | |
| 41 | #define __HAVE_ARCH_MEMSET64 |
| 42 | extern void *__memset64(uint64_t *, uint32_t low, __kernel_size_t, uint32_t hi); |
| 43 | static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n) |
| 44 | { |
| 45 | if (IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN)) |
| 46 | return __memset64(p, v, n * 8, v >> 32); |
| 47 | else |
| 48 | return __memset64(p, v >> 32, n * 8, v); |
| 49 | } |
| 50 | |
| 51 | /* |
| 52 | * For files that are not instrumented (e.g. mm/slub.c) we |
| 53 | * must use non-instrumented versions of the mem* |
| 54 | * functions named __memcpy() etc. All such kernel code has |
| 55 | * been tagged with KASAN_SANITIZE_file.o = n, which means |
| 56 | * that the address sanitization argument isn't passed to the |
| 57 | * compiler, and __SANITIZE_ADDRESS__ is not set. As a result |
| 58 | * these defines kick in. |
| 59 | */ |
| 60 | #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) |
| 61 | #define memcpy(dst, src, len) __memcpy(dst, src, len) |
| 62 | #define memmove(dst, src, len) __memmove(dst, src, len) |
| 63 | #define memset(s, c, n) __memset(s, c, n) |
| 64 | |
| 65 | #ifndef __NO_FORTIFY |
| 66 | #define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */ |
| 67 | #endif |
| 68 | |
| 69 | #endif |
| 70 | |
| 71 | #endif |
| 72 |
Warning: This file is not a C or C++ file. It does not have highlighting.