1 #ifndef _X86_64_STRING_H_
2 #define _X86_64_STRING_H_
6 #define struct_cpy(x,y) (*(x)=*(y))
8 /* Written 2002 by Andi Kleen */
10 /* Only used for special circumstances. Stolen from i386/string.h */
11 static inline void * __inline_memcpy(void * to, const void * from, size_t n)
13 unsigned long d0, d1, d2;
19 "1:\ttestb $1,%b4\n\t"
23 : "=&c" (d0), "=&D" (d1), "=&S" (d2)
24 :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
29 /* Even with __builtin_ the compiler may decide to use the out of line
32 #define __HAVE_ARCH_MEMCPY 1
33 extern void *__memcpy(void *to, const void *from, size_t len);
34 #define memcpy(dst,src,len) \
35 ({ size_t __len = (len); \
37 if (__builtin_constant_p(len) && __len >= 64) \
38 __ret = __memcpy((dst),(src),__len); \
40 __ret = __builtin_memcpy((dst),(src),__len); \
44 #define __HAVE_ARCH_MEMSET
45 #define memset __builtin_memset
47 #define __HAVE_ARCH_MEMMOVE
48 void * memmove(void * dest,const void *src,size_t count);
50 /* Use C out of line version for memcmp */
51 #define memcmp __builtin_memcmp
52 int memcmp(const void * cs,const void * ct,size_t count);
54 /* out of line string functions use always C versions */
55 #define strlen __builtin_strlen
56 size_t strlen(const char * s);
58 #define strcpy __builtin_strcpy
59 char * strcpy(char * dest,const char *src);
61 #define strcat __builtin_strcat
62 char * strcat(char * dest, const char * src);
64 #define strcmp __builtin_strcmp
65 int strcmp(const char * cs,const char * ct);
67 #endif /* __KERNEL__ */