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Message-ID: <19980206155859.02035@freebie.lemis.com>
Date: Fri, 6 Feb 1998 15:58:59 +1030
From: Greg Lehey <grog@lemis.com>
To: Amancio Hasty <hasty@rah.star-gate.com>, freebsd-current@FreeBSD.ORG
Cc: Julian Elischer <julian@whistle.com>
Subject: Re: Remote gdb ?
References: <199802060426.UAA03850@rah.star-gate.com>
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In-Reply-To: <199802060426.UAA03850@rah.star-gate.com>; from Amancio Hasty on Thu, Feb 05, 1998 at 08:26:13PM -0800
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On Thu,  5 February 1998 at 20:26:13 -0800, Amancio Hasty wrote:
>
> Does anyone know what can cause "Reply contains invalid hex digit 116" ?

At a guess, it's an overrun.  I haven't been able to get remote gdb to
work reliably above 9600 bps.  In fact, I haven't been able to get it
to work reliably at all, but at least at 9600 bps I don't have any
transmission errors :-)

Of course, I don't believe it's a hex digit at all.  I'd guess it's
decimal (0x74 hex, or 't').  Is it repeatable?  From what you show
below, it appears to be intermittent.

Greg

>
> 	Tnks,
> 	Amancio
>
> (kgdb) set remotebaud 38400
> (kgdb) target remote /dev/cuaa0
> Remote debugging using /dev/cuaa0
> Debugger (msg=0xf01f33eb "manual escape to debugger")
>     at ../../i386/i386/db_interface.c:319
> 319     }
> (kgdb) frame
> #0  Debugger (msg=0xf01f33eb "manual escape to debugger")
>     at ../../i386/i386/db_interface.c:319
> 319     }
> (kgdb) cont
> Continuing.
>
> Program received signal SIGTRAP, Trace/breakpoint trap.
> Debugger (msg=0xf0117874 "panic") at ../../i386/i386/db_interface.c:317
> 317                 in_Debugger = 0;
> (kgdb) frame
> #0  Debugger (Ignoring packet error, continuing...
> msg=Reply contains invalid hex digit 116
> ) at ../../i386/i386/db_interface.c:317
> 317                 in_Debugger = 0;
> (kgdb)
> {root} stty -f /dev/cuaa0
> speed 38400 baud;
> lflags: -icanon -isig -iexten -echo
> iflags: -icrnl -ixon -ixany -imaxbel -brkint
> oflags: -opost -onlcr -oxtabs
> cflags: cs8 -parenb clocal
> min     time
> 0       20