在线跪求大神解决EDK中Powerpc中断的问题

1. #include "xparameters.h"
   
2. 
   
3. #include "xcache_l.h"
   
4. 
   
5. #include "stdio.h"
   
6. 
   
7. #include "xutil.h"
   
8. 
   
9. #include "xuartlite.h"
   
10. #include "xuartlite_l.h"
    
11. 
    
12. #include "xintc.h"
    
13. #include "xintc_l.h"
    
14. #include "xintc_i.h"
    
15. 
    
16. #include "xexception_l.h"
    
17. 
    
18. //====================================================
    
19. 
    
20. char buff;
    
21. void RS232_IntHandler(void)
    
22. {
    
23. while(！XUartLite_mIsReceiveEmpty(XPAR_RS232_BASEADDR ))
    
24. {
    
25.   buff=XUartLite_RecvByte(XPAR_RS232_BASEADDR );
    
26.   XUartLite_SendByte(XPAR_RS232_BASEADDR,buff);
    
27. }
    
28. }
    
29. 
    
30. int main (void)
    
31. {
    
32.    print("-- Entering main() --\r\n");
    
33.    XExc_Init();
    
34.    XExc_RegisterHandler(XEXC_ID_NON_CRITICAL_INT,(XExceptionHandler)XIntc_DeviceInterruptHandler,(void*)0);
    
35.    XCache_EnableICache(0xc0000001);
    
36.    XCache_EnableDCache(0xc0000001);
    
37. 
    
38.    XIntc_RegisterHandler(XPAR_XPS_INTC_0_BASEADDR,XPAR_XPS_INTC_0_RS232_INTERRUPT_INTR,(XInterruptHandler)RS232_IntHandler,(void *)0);
    
39.    XIntc_mMasterEnable(XPAR_XPS_INTC_0_BASEADDR );
    
40.    XIntc_mEnableIntr(XPAR_XPS_INTC_0_BASEADDR,XPAR_RS232_INTERRUPT_MASK );
    
41. 
    
42.    XUartLite_mEnableIntr(XPAR_RS232_BASEADDR);
    
43.    
    
44.   while(1){}
    
45.   return 0;
    
46.   XCache_DisableDCache();
    
47.   XCache_DisableICache();
    
48. }

怎么没人回复啊