Hi,

I've committed the attach patch. I allows the psecification of

(if (application-is? <appname>)
    (true expr)
    (false expr))

at the top level of the CGEN input. This test corresponds to (eq? 
application <appname>) which is found in many places in the CGEN source. 
For example

(if  (application-is? SID-SIMULATOR)
     (include "sid-macros.cpu")
     (include "sim-macros.cpu"))

Dave