1. 根目录:
2. arch
3. sparc
4. include
5. asm
6. string_64.h

/*
 * string.h: External definitions for optimized assembly string
 *           routines for the Linux Kernel.
 *
 * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
 * Copyright (C) 1996,1997,1999 Jakub Jelinek (jakub@redhat.com)
 */

#ifndef __SPARC64_STRING_H__
#define __SPARC64_STRING_H__

/* Really, userland/ksyms should not see any of this stuff. */

#ifdef __KERNEL__

#include <asm/asi.h>

#ifndef EXPORT_SYMTAB_STROPS

/* First the mem*() things. */
#define __HAVE_ARCH_MEMMOVE
extern void *memmove(void *, const void *, __kernel_size_t);

#define __HAVE_ARCH_MEMCPY
#define memcpy(t, f, n) __builtin_memcpy(t, f, n)

#define __HAVE_ARCH_MEMSET
#define memset(s, c, count) __builtin_memset(s, c, count)

#define __HAVE_ARCH_MEMSCAN

#undef memscan
#define memscan(__arg0, __char, __arg2)					\
({									\
	extern void *__memscan_zero(void *, size_t);			\
	extern void *__memscan_generic(void *, int, size_t);		\
	void *__retval, *__addr = (__arg0);				\
	size_t __size = (__arg2);					\
									\
	if(__builtin_constant_p(__char) && !(__char))			\
		__retval = __memscan_zero(__addr, __size);		\
	else								\
		__retval = __memscan_generic(__addr, (__char), __size);	\
									\
	__retval;							\
})

#define __HAVE_ARCH_MEMCMP
extern int memcmp(const void *,const void *,__kernel_size_t);

/* Now the str*() stuff... */
#define __HAVE_ARCH_STRLEN
extern __kernel_size_t strlen(const char *);

#define __HAVE_ARCH_STRNCMP
extern int strncmp(const char *, const char *, __kernel_size_t);

#endif /* !EXPORT_SYMTAB_STROPS */

#endif /* __KERNEL__ */

#endif /* !(__SPARC64_STRING_H__) */