From:	"Vincent" <spam AT spam DOT com>
Newsgroups:	comp.os.msdos.djgpp
References:	<rYECa.5598$JA5 DOT 93711 AT news DOT xtra DOT co DOT nz> <557-Tue03Jun2003071400+0300-eliz AT elta DOT co DOT il>
Subject:	Re: Remote debugging over a serial cable
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Date:	Tue, 3 Jun 2003 22:18:54 +1200
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Eli, thanks for your response.

I'll try to search the archives of the newsgroup for any mention of remote
debugging.

FYI: The program I'm trying to debug runs on the DOS platform (Imagine a
plain DOS machine - no Windows - and that's pretty much what I'm playing
with here).

I compile on WinXP using DJGPP, and pretty much copy it over (via floppy) to
the target machine.

I also use UPX to compress the executable (original size is about 11MB,
compressed to about 700kb). I think UPX strips symbols from the exe. Given
that I use UPX, I'm not sure whether remote debugging (or even using GDB)
would work.

Even if it did, the symbol file would probably be too big to copy onto a
floppy to transfer to the target machine. The application also uses the
CWSDPMI stub - but I think GDB should handle this.

And supposing I did have GDB, the .exe and symbols on the target machine,
the application uses graphics - so command-line operation will be difficult.

Any ideas welcome.

Current debugging methods are logging to a file - and then figuring out what
happened; which is hardly an attractive thing to do.

ps. It's a long story why I'm compiling for DOS, let alone using an DOS
machine...just don't ask :-)


"Eli Zaretskii" <eliz AT elta DOT co DOT il> wrote in message
news:557-Tue03Jun2003071400+0300-eliz AT elta DOT co DOT il...
> > From: "Vincent" <spam AT spam DOT com>
> > Newsgroups: comp.os.msdos.djgpp
> >
> > Is it possible to remote debug a program compiled with DJGPP over the
serial
> > port, where the target is DOS, and the host is Win2k or XP.
> >
> > I've seen the documentation for gdb and gdbserver; and there's no
mention of
> > gdbserver running in DOS.
>
> Remote debugging of DJGPP programs is possible, but not all of the
> necessary code is part of the official GDB distribution.
>
> I suggest to search the archives of this news group for relevant key
> words; I think someone who did succeed in making remote DJGPP
> debugging happen posted information about that here.
>
> That said, could you please tell why can't you use the ordinary
> debugging procedure with the gdb.exe executable?  It does run on
> Windows, AFAIK.

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