Hi naveen The following links might help u http://www.ibiblio.org/gferg/ldp/GCC-Inline-Assembly-HOWTO.html http://www.delorie.com/djgpp/doc/brennan/brennan_att_inline_djgpp.html http://linuxassembly.org/articles/linasm.html if you have anything in particular, let me know, i will try to help you regards durai