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  • /*
     * Copyright (C) 2011 Andes Technology Corporation
     * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com)
     * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com)
     *
     * 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.
     */
    
    #ifndef __ASM_NDS_STRING_H
    #define __ASM_NDS_STRING_H
    
    /*
     * We don't do inline string functions, since the
     * optimised inline asm versions are not small.
     */
    
    #undef __HAVE_ARCH_STRRCHR
    extern char *strrchr(const char *s, int c);
    
    #undef __HAVE_ARCH_STRCHR
    extern char *strchr(const char *s, int c);
    
    #undef __HAVE_ARCH_MEMCPY
    extern void *memcpy(void *, const void *, __kernel_size_t);
    
    #undef __HAVE_ARCH_MEMMOVE
    extern void *memmove(void *, const void *, __kernel_size_t);
    
    #undef __HAVE_ARCH_MEMCHR
    extern void *memchr(const void *, int, __kernel_size_t);
    
    #undef __HAVE_ARCH_MEMZERO
    #undef __HAVE_ARCH_MEMSET
    extern void *memset(void *, int, __kernel_size_t);
    
    #ifdef CONFIG_MARCO_MEMSET
    extern void __memzero(void *ptr, __kernel_size_t n);
    
    #define memset(p, v, n)							\
    	({								\
    		if ((n) != 0) {						\
    			if (__builtin_constant_p((v)) && (v) == 0)	\
    				__memzero((p), (n));			\
    			else						\
    				memset((p), (v), (n));			\
    		}							\
    		(p);							\
    	})
    
    #define memzero(p, n) ({ if ((n) != 0) __memzero((p), (n)); (p); })
    #else
    extern void memzero(void *ptr, __kernel_size_t n);
    #endif
    
    #endif /* __ASM_NDS_STRING_H */