extern char _etext;
extern char _data;
extern char _edata;
extern char _start_bss;
extern char _end;
extern void main(void);
extern void initXsys(void);
#pragma noprolog
_start()
{
    register char *ptrDes = &_data;
    register char *ptrSrc = &_etext;
    while (ptrDes < &_edata) {
      *ptrDes++ = *ptrSrc++;
	}
    ptrDes=&_start_bss;
    while(ptrDes < &_end)
      *ptrDes++ = 0;
    initXsys();
    main();
} 
_exit()
{
  for(;;);
}