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Date:      Sat, 9 Sep 2000 15:58:39 +0100 (BST)
From:      Doug Rabson <dfr@nlsystems.com>
To:        John Baldwin <jhb@pike.osd.bsdi.com>
Cc:        alpha@freebsd.org
Subject:   Re: Grrr, kgdb anyone?
Message-ID:  <Pine.BSF.4.21.0009091557330.530-100000@salmon.nlsystems.com>
In-Reply-To: <200009082227.PAA64982@pike.osd.bsdi.com>

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On Fri, 8 Sep 2000, John Baldwin wrote:

> Hmm, well, it would seem that no one ever uses remote gdb for kernel
> debugging on the alpha.  I've tried flags=0x50, 0x80, and 0xD0.  In all
> cases, ddb refuses to drop to gdb claiming that a port hasn't been configured
> and that I should set flags 0x80 on a sio device and try again.  I have
> preliminary alpha interrupt threads up and running, but for some reason
> Giant is being released when it shouldn't be, and the ata probe dies when
> an assertion fails in await().  I would really like to have a working kgdb
> if anyone has suggestions as to how to get that.

I use it all the time:

hint.sio.1.at="isa"
hint.sio.1.port="0x2F8"
hint.sio.1.irq="3"
hint.sio.1.flags="0xc0"

Note: you must use sio1 for debugging at the moment.

-- 
Doug Rabson				Mail:  dfr@nlsystems.com
Nonlinear Systems Ltd.			Phone: +44 20 8348 3944




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