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/* Normally compiler builtins are used, but sometimes the compiler calls out of line code. Based on asm-i386/string.h. */ #define _STRING_C #include <linux/string.h> #undef memmove void *memmove(void * dest,const void *src,size_t count) { if (dest < src) { __inline_memcpy(dest,src,count); } else { /* Could be more clever and move longs */ unsigned long d0, d1, d2; __asm__ __volatile__( "std\n\t" "rep\n\t" "movsb\n\t" "cld" : "=&c" (d0), "=&S" (d1), "=&D" (d2) :"0" (count), "1" (count-1+(const char *)src), "2" (count-1+(char *)dest) :"memory"); } return dest; } |