.word _XY_

horseriver <[email protected]> Tue, 12 Feb 2013 15:15:10 +0800

Newsgroups	org.kernel.vger.linux-assembly
Message-ID	<[email protected]>

hi:)

  this define : .word _xy_ 

  what is this define meaning?    
  what is the  value of _xy_ ?
  thanks!