#include <linux/config.h> | |
#include <linux/string.h> | |
#include <linux/module.h> | |
#undef memcpy | |
#undef memset | |
void *memcpy(void *to, const void *from, size_t n) | |
{ | |
#ifdef CONFIG_X86_USE_3DNOW | |
return __memcpy3d(to, from, n); | |
#else | |
return __memcpy(to, from, n); | |
#endif | |
} | |
EXPORT_SYMBOL(memcpy); | |
void *memset(void *s, int c, size_t count) | |
{ | |
return __memset(s, c, count); | |
} | |
EXPORT_SYMBOL(memset); | |
void *memmove(void *dest, const void *src, size_t n) | |
{ | |
int d0, d1, d2; | |
if (dest < src) { | |
memcpy(dest,src,n); | |
} else { | |
__asm__ __volatile__( | |
"std\n\t" | |
"rep\n\t" | |
"movsb\n\t" | |
"cld" | |
: "=&c" (d0), "=&S" (d1), "=&D" (d2) | |
:"0" (n), | |
"1" (n-1+(const char *)src), | |
"2" (n-1+(char *)dest) | |
:"memory"); | |
} | |
return dest; | |
} | |
EXPORT_SYMBOL(memmove); |