Subversion Repositories 1g_ethernet_dpi

/*

 * tbd

 *

 */

void *xil_memmove(void *d, const void *s, unsigned int count)

{

        unsigned long dst, src;

        if (!count)

                return d;

        if (d < s) {

                dst = (unsigned long) d;

                src = (unsigned long) s;

                if ((count < 8) || ((dst ^ src) & 3))

                        goto restup;

                if (dst & 1) {

                        *(char *)dst++ = *(char *)src++;

                        count--;

                }

                if (dst & 2) {

                        *(short *)dst = *(short *)src;

                        src += 2;

                        dst += 2;

                        count -= 2;

                }

                while (count > 3) {

                        *(long *)dst = *(long *)src;

                        src += 4;

                        dst += 4;

                        count -= 4;

                }

restup:

                while (count--)

                        *(char *)dst++ = *(char *)src++;

        } else {

                dst = (unsigned long) d + count;

                src = (unsigned long) s + count;

                if ((count < 8) || ((dst ^ src) & 3))

                        goto restdown;

                if (dst & 1) {

                        src--;

                        dst--;

                        count--;

                        *(char *)dst = *(char *)src;

                }

                if (dst & 2) {

                        src -= 2;

                        dst -= 2;

                        count -= 2;

                        *(short *)dst = *(short *)src;

                }

                while (count > 3) {

                        src -= 4;

                        dst -= 4;

                        count -= 4;

                        *(long *)dst = *(long *)src;

                }

restdown:

                while (count--) {

                        src--;

                        dst--;

                        *(char *)dst = *(char *)src;

                }

        }

        return d;

}