bool retro_serialize(void *data, size_t size)
{
   /* it seems that mednafen can realloc pointers sent to it?
      since we don't know the disposition of void* data (is it safe to realloc?) we have to manage a new buffer here */
   StateMem st;
   memset(&st, 0, sizeof(st));
   st.data     = (uint8_t*)malloc(size);
   st.malloced = size;

   bool ret = MDFNSS_SaveSM(&st, 0, 0, NULL, NULL, NULL);

   /* there are still some errors with the save states, the size seems to change on some games for now just log when this happens */
   if (st.len != size)
      log_cb(RETRO_LOG_WARN, "warning, save state size has changed\n");

if(	st.len > size) {
log_cb(RETRO_LOG_ERROR, "ERROR: save state size inflated. This is forbidden. Can't serialize.\n");
return false;
}

   memcpy(data,st.data,size);
   free(st.data);
return ret;

}