/* * include/asm-xtensa/string.h * * These trivial string functions are considered part of the public domain. * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2001 - 2005 Tensilica Inc. */ /* We should optimize these. See arch/xtensa/lib/strncpy_user.S */ #ifndef _XTENSA_STRING_H#define _XTENSA_STRING_H #define __HAVE_ARCH_STRCPYstatic inline char *strcpy(char *__dest, const char *__src){	register char *__xdest = __dest;	unsigned long __dummy; 	__asm__ __volatile__("1:\n\t"		"l8ui	%2, %1, 0\n\t"		"s8i	%2, %0, 0\n\t"		"addi	%1, %1, 1\n\t"		"addi	%0, %0, 1\n\t"		"bnez	%2, 1b\n\t"		: "=r" (__dest), "=r" (__src), "=&r" (__dummy)		: "0" (__dest), "1" (__src)		: "memory"); 	return __xdest;} #define __HAVE_ARCH_STRCMPstatic inline int strcmp(const char *__cs, const char *__ct){	register int __res;	unsigned long __dummy; 	__asm__ __volatile__(		"1:\n\t"		"l8ui	%3, %1, 0\n\t"		"addi	%1, %1, 1\n\t"		"l8ui	%2, %0, 0\n\t"		"addi	%0, %0, 1\n\t"		"beqz	%2, 2f\n\t"		"beq	%2, %3, 1b\n"		"2:\n\t"		"sub	%2, %2, %3"		: "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)		: "0" (__cs), "1" (__ct)); 	return __res;} #define __HAVE_ARCH_STRNCMPstatic inline int strncmp(const char *__cs, const char *__ct, size_t __n){	register int __res;	unsigned long __dummy; 	__asm__ __volatile__(		"mov	%2, %3\n"		"1:\n\t"		"beq	%0, %6, 2f\n\t"		"l8ui	%3, %1, 0\n\t"		"addi	%1, %1, 1\n\t"		"l8ui	%2, %0, 0\n\t"		"addi	%0, %0, 1\n\t"		"beqz	%2, 2f\n\t"		"beqz	%3, 2f\n\t"		"beq	%2, %3, 1b\n"		"2:\n\t"		"sub	%2, %2, %3"		: "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)		: "0" (__cs), "1" (__ct), "r" ((uintptr_t)__cs+__n)); 	return __res;} #define __HAVE_ARCH_MEMSETextern void *memset(void *__s, int __c, size_t __count);extern void *__memset(void *__s, int __c, size_t __count); #define __HAVE_ARCH_MEMCPYextern void *memcpy(void *__to, __const__ void *__from, size_t __n);extern void *__memcpy(void *__to, __const__ void *__from, size_t __n); #define __HAVE_ARCH_MEMMOVEextern void *memmove(void *__dest, __const__ void *__src, size_t __n);extern void *__memmove(void *__dest, __const__ void *__src, size_t __n); #if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) /* * For files that are not instrumented (e.g. mm/slub.c) we * should use not instrumented version of mem* functions. */ #define memcpy(dst, src, len) __memcpy(dst, src, len)#define memmove(dst, src, len) __memmove(dst, src, len)#define memset(s, c, n) __memset(s, c, n) #ifndef __NO_FORTIFY#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */#endif#endif #endif	/* _XTENSA_STRING_H */