crt0.c

RFID手持设备的读写代码,具有读RFID卡和进行数据管理的代码,同时还包含串口通讯的代码

extern char _etext;
extern char _data;
extern char _edata;
extern char _start_bss;
extern char _end;
extern void main(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;
      
    main();
}  

_exit()
{
  for(;;);
}