About omap-l137(dev board), uart code

I have tried to write my own code for uart communication in interrupt mode, but i used the intvec.asm from TI example code.

while building its giving errors as 

Multiple markers at this line
- [E0003] Unexpected trailing operand(s)
- [E0001] Undefined symbol
- [E0002] Illegal mnemonic specified

  any one can suggest me what i have to do debug errors.

Thanks & Regards

shankar h