#include <stdlib.h>
void * memcpy(void * dst, void const * src, size_t len)
{
        unsigned long int a,b,c,d;
        unsigned long int a1,b1,c1,d1;
        unsigned long int a2,b2,c2,d2;
        unsigned long int a3,b3,c3,d3;
    long * plDst = (long *) dst;
    long const * plSrc = (long const *) src;
    //if (!((unsigned long)src & 0xFFFFFFFC) && !((unsigned long)dst & 0xFFFFFFFC))
    //{
        while (len >= 64)
        {
                        a =  plSrc[0];
                        b =  plSrc[1];
                        c =  plSrc[2];
                        d =  plSrc[3];
                        a1 = plSrc[4];
                        b1 = plSrc[5];
                        c1 = plSrc[6];
                        d1 = plSrc[7];
                        a2 = plSrc[8];
                        b2 = plSrc[9];
                        c2 = plSrc[10];
                        d2 = plSrc[11];
                        a3 = plSrc[12];
                        b3 = plSrc[13];
                        c3 = plSrc[14];
                        d3 = plSrc[15];
                        plSrc += 16;
                        plDst[0] = a;
                        plDst[1] = b;
                        plDst[2] = c;
                        plDst[3] = d;
                        plDst[4] = a1;
                        plDst[5] = b1;
                        plDst[6] = c1;
                        plDst[7] = d1;
                        plDst[8] = a2;
                        plDst[9] = b2;
                        plDst[10] = c2;
                        plDst[11] = d2;
                        plDst[12] = a3;
                        plDst[13] = b3;
                        plDst[14] = c3;
                        plDst[15] = d3;
                        plDst += 16;
            len -= 64;
        }
        while(len >= 16) {
            a =  plSrc[0];
            b =  plSrc[1];
            c =  plSrc[2];
            d =  plSrc[3];
            plSrc += 4;
            plDst[0] = a;
            plDst[1] = b;
            plDst[2] = c;
            plDst[3] = d;
            plDst += 4;
            len -= 16;
        }
    //}
    char * pcDst = (char *) plDst;
    char const * pcSrc = (char const *) plSrc;

    while (len--)
    {
        *pcDst++ = *pcSrc++;
    }
    return (dst);
}