gecko-dev/xpcom/reflect/xptcall
..
public
src
tests
.cvsignore
Makefile.in
porting.html
README
status.html

see:

http://www.mozilla.org/scriptable/xptcall-faq.html
and
http://lxr.mozilla.org/mozilla/source/xpcom/reflect/xptcall/porting.html