Release 4.15 arch/arm/include/asm/string.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_ARM_STRING_H

#define __ASM_ARM_STRING_H

/*
 * We don't do inline string functions, since the
 * optimised inline asm versions are not small.
 */


#define __HAVE_ARCH_STRRCHR
extern char * strrchr(const char * s, int c);


#define __HAVE_ARCH_STRCHR
extern char * strchr(const char * s, int c);


#define __HAVE_ARCH_MEMCPY
extern void * memcpy(void *, const void *, __kernel_size_t);


#define __HAVE_ARCH_MEMMOVE
extern void * memmove(void *, const void *, __kernel_size_t);


#define __HAVE_ARCH_MEMCHR
extern void * memchr(const void *, int, __kernel_size_t);


#define __HAVE_ARCH_MEMSET
extern void * memset(void *, int, __kernel_size_t);


#define __HAVE_ARCH_MEMSET32
extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);


static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n)
{
	return __memset32(p, v, n * 4);
}

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#define __HAVE_ARCH_MEMSET64
extern void *__memset64(uint64_t *, uint32_t low, __kernel_size_t, uint32_t hi);


static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
{
	return __memset64(p, v, n * 8, v >> 32);
}

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extern void __memzero(void *ptr, __kernel_size_t n);


#define memset(p,v,n)							\
	({                                                              \
                void *__p = (p); size_t __n = n;                        \
                if ((__n) != 0) {                                       \
                        if (__builtin_constant_p((v)) && (v) == 0)      \
                                __memzero((__p),(__n));                 \
                        else                                            \
                                memset((__p),(v),(__n));                \
                }                                                       \
                (__p);                                                  \
        })

#endif
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Deepak Saxena
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Directory: arch/arm/include/asm

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