diff -r 000000000000 -r 6474c204b198 toolkit/library/libxul.so-gdb.py.in
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/library/libxul.so-gdb.py.in	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+""" GDB Python customization auto-loader for libxul """
+#filter substitution
+
+import os.path
+sys.path[0:0] = [os.path.join('@topsrcdir@', 'js', 'src', 'gdb')]
+
+import mozilla.autoload
+mozilla.autoload.register(gdb.current_objfile())