<DIV>thanks,Mr. Dyer</DIV>  <DIV>&nbsp;&nbsp;&nbsp; I got it where's EXPORT_FUNC(x) defined,but I am not sure what &nbsp;the func. jumptable_init() does in U-Boot</DIV>  <DIV>&nbsp;</DIV>  <DIV>&nbsp;</DIV>  <DIV>&nbsp;</DIV>  <DIV>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Best regards!</DIV>  <DIV>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sun&nbsp;</DIV><p>&#32;



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