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| 2 | #ifndef __ASM_ARM_STRING_H
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| 3 | #define __ASM_ARM_STRING_H
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| 4 |
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| 5 | |
| 6 | * We don't do inline string functions, since the
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| 7 | * optimised inline asm versions are not small.
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| 8 | *
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| 9 | * The __underscore versions of some functions are for KASan to be able
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| 10 | * to replace them with instrumented versions.
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| 11 |
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| 12 |
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| 13 | #define __HAVE_ARCH_STRRCHR
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| 14 | extern char * strrchr(const char * s, int c);
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| 15 |
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| 16 | #define __HAVE_ARCH_STRCHR
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| 17 | extern char * strchr(const char * s, int c);
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| 18 |
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| 19 | #define __HAVE_ARCH_MEMCPY
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| 20 | extern void * memcpy(void *, const void *, __kernel_size_t);
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| 21 | extern void *__memcpy(void *dest, const void *src, __kernel_size_t n);
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| 22 |
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| 23 | #define __HAVE_ARCH_MEMMOVE
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| 24 | extern void * memmove(void *, const void *, __kernel_size_t);
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| 25 | extern void *__memmove(void *dest, const void *src, __kernel_size_t n);
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| 26 |
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| 27 | #define __HAVE_ARCH_MEMCHR
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| 28 | extern void * memchr(const void *, int, __kernel_size_t);
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| 29 |
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| 30 | #define __HAVE_ARCH_MEMSET
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| 31 | extern void * memset(void *, int, __kernel_size_t);
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| 32 | extern void *__memset(void *s, int c, __kernel_size_t n);
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| 33 |
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| 34 | #define __HAVE_ARCH_MEMSET32
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| 35 | extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);
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| 36 | static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n)
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| 37 | {
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| 38 | return __memset32(p, v, n * 4);
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| 39 | }
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| 40 |
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| 41 | #define __HAVE_ARCH_MEMSET64
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| 42 | extern void *__memset64(uint64_t *, uint32_t first, __kernel_size_t, uint32_t second);
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| 43 | static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
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| 44 | {
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| 45 | union {
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| 46 | uint64_t val;
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| 47 | struct {
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| 48 | uint32_t first, second;
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| 49 | };
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| 50 | } word = { .val = v };
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| 51 |
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| 52 | return __memset64(p, word.first, n * 8, word.second);
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| 53 | }
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| 54 |
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| 55 | |
| 56 | * For files that are not instrumented (e.g. mm/slub.c) we
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| 57 | * must use non-instrumented versions of the mem*
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| 58 | * functions named __memcpy() etc. All such kernel code has
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| 59 | * been tagged with KASAN_SANITIZE_file.o = n, which means
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| 60 | * that the address sanitization argument isn't passed to the
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| 61 | * compiler, and __SANITIZE_ADDRESS__ is not set. As a result
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| 62 | * these defines kick in.
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| 63 |
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| 64 | #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__)
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| 65 | #define memcpy(dst, src, len) __memcpy(dst, src, len)
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| 66 | #define memmove(dst, src, len) __memmove(dst, src, len)
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| 67 | #define memset(s, c, n) __memset(s, c, n)
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| 68 |
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| 69 | #ifndef __NO_FORTIFY
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| 70 | #define __NO_FORTIFY
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| 71 | #endif
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| 72 |
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| 73 | #endif
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| 74 |
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| 75 | #endif
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