#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);