> Here the results of running:
> [nldudok1@quark incoming]$ /var/ftp/incoming/psim/freebsd/bin/powerpc-netbsd-run
>   -f /var/ftp/incoming/trees/cagney_tree_real /var/ftp/incoming/netbsd_ofppc_ca
> gney_half_stripped
> Copyright (c) 1996, 1997, 1998, 1999, 2000
>     The NetBSD Foundation, Inc.  All rights reserved.

Try downloading the current GDB sources 
(http://sources.redhat.com/gdb/current/ and then run things under GDB:

	(gdb) file netbsd.gdb
	(gdb) target sim -f tree
	(gdb) run

When the trap is hit, type cntrl-c and you should have all the normal 
GDB facilities available.

Andrew