Viewing file:  string.h (2.42 KB) -rw-r--r--
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ALPHA_STRING_H__
#define __ALPHA_STRING_H__
#ifdef __KERNEL__
/*
* GCC of any recent vintage doesn't do stupid things with bcopy.
* EGCS 1.1 knows all about expanding memcpy inline, others don't.
*
* Similarly for a memset with data = 0.
*/
#define __HAVE_ARCH_MEMCPY
extern void * memcpy(void *, const void *, size_t);
#define __HAVE_ARCH_MEMMOVE
extern void * memmove(void *, const void *, size_t);
/* For backward compatibility with modules. Unused otherwise. */
extern void * __memcpy(void *, const void *, size_t);
#define memcpy __builtin_memcpy
#define __HAVE_ARCH_MEMSET
extern void * __constant_c_memset(void *, unsigned long, size_t);
extern void * ___memset(void *, int, size_t);
extern void * __memset(void *, int, size_t);
extern void * memset(void *, int, size_t);
/* For gcc 3.x, we cannot have the inline function named "memset" because
the __builtin_memset will attempt to resolve to the inline as well,
leading to a "sorry" about unimplemented recursive inlining. */
extern inline void *__memset(void *s, int c, size_t n)
{
if (__builtin_constant_p(c)) {
if (__builtin_constant_p(n)) {
return __builtin_memset(s, c, n);
} else {
unsigned long c8 = (c & 0xff) * 0x0101010101010101UL;
return __constant_c_memset(s, c8, n);
}
}
return ___memset(s, c, n);
}
#define memset __memset
#define __HAVE_ARCH_STRCPY
extern char * strcpy(char *,const char *);
#define __HAVE_ARCH_STRNCPY
extern char * strncpy(char *, const char *, size_t);
#define __HAVE_ARCH_STRCAT
extern char * strcat(char *, const char *);
#define __HAVE_ARCH_STRNCAT
extern char * strncat(char *, const char *, size_t);
#define __HAVE_ARCH_STRCHR
extern char * strchr(const char *,int);
#define __HAVE_ARCH_STRRCHR
extern char * strrchr(const char *,int);
#define __HAVE_ARCH_STRLEN
extern size_t strlen(const char *);
#define __HAVE_ARCH_MEMCHR
extern void * memchr(const void *, int, size_t);
/* The following routine is like memset except that it writes 16-bit
aligned values. The DEST and COUNT parameters must be even for
correct operation. */
#define __HAVE_ARCH_MEMSET16
extern void * __memset16(void *dest, unsigned short, size_t count);
static inline void *memset16(uint16_t *p, uint16_t v, size_t n)
{
if (__builtin_constant_p(v))
return __constant_c_memset(p, 0x0001000100010001UL * v, n * 2);
return __memset16(p, v, n * 2);
}
#endif /* __KERNEL__ */
#endif /* __ALPHA_STRING_H__ */
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