From owner-freebsd-hackers  Sat Feb 24 05:22:18 1996
Return-Path: owner-hackers
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.3/8.7.3) id FAA29421
          for hackers-outgoing; Sat, 24 Feb 1996 05:22:18 -0800 (PST)
Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.2.228.19])
          by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id FAA29410
          for <freebsd-hackers@freefall.freebsd.org>; Sat, 24 Feb 1996 05:22:09 -0800 (PST)
Received: (from bde@localhost) by godzilla.zeta.org.au (8.6.12/8.6.9) id AAA04558; Sun, 25 Feb 1996 00:19:29 +1100
Date: Sun, 25 Feb 1996 00:19:29 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199602241319.AAA04558@godzilla.zeta.org.au>
To: Mattias.Gronlund@sa.erisoft.se, joerg_wunsch@uriah.heep.sax.de
Subject: Re: Whither ddb
Cc: freebsd-hackers@freefall.freebsd.org
Sender: owner-hackers@FreeBSD.ORG
Precedence: bulk

>The handbook says:
>  The DDB commands roughly resemble some gdb commands. The first you 
>  probably need is to set a breakpoint: 
> 
>       b function-name
>       b address

>But if I try to use the b function-name I always get the response that
>there is no symbol with that name (I have tried different function names).
>My kernel has the OPTION DDB and is configured with -d and it is not 
>stripped.

Perhaps you have a very old boot loader that doesn't load symbol tables.

You can tell if you have symbols by looking at the disassembly of the
current instruction.  For entry via Ctrl-PrintScreen it should look
something like:

	Stopped at      _Debugger+0x2b: movb    $0,_in_Debugger.100
	db>

ddb doesn't understand names with `.' in them like the one above.

Bruce