freebsd stable - Sep 2003 - Using dwarf2 in kernel debug?

i'm evaluating an emulator for xeon, but
it only supports dwarf2, not stabs. Is
there a simple means of changing the config
for the system gcc, or is this a much
more involved thing? This is for releng_4.
e.g. is loader, gdb -k, etc, all ok with
seeing dwarf2 debugging info in /kernel,
and in modules.

--don