From: Ryan Underwood <nemesis-lists@icequake.net>
To: anon permutation <anonpermutation@hotmail.com>
Cc: linux-msdos@vger.kernel.org
Subject: Re: Dos App hangs with DPMI / PIC problem
Date: Fri, 10 Sep 2004 11:16:25 -0500 [thread overview]
Message-ID: <20040910161625.GB30478@dbz.icequake.net> (raw)
In-Reply-To: <BAY15-F39YZMGN7Osdt000486a9@hotmail.com>
> Ryan, the dos app was designed for running on a MS-DOS machine that has no
> Windows on it. Since it is not meant for Linux, the vendor is not willing
> to support me in any way...
Maybe you should make some noise to his competitors...
> I also tried to attach dosdebug to dosemu before I start the Dos App. I
> was told that dosdebug will give a lot more information on the problem this
> way. However, dosdebug did not give me any extra info when the Dosemu hang.
>
> Thank you for helping me. What else can I try?
Well, the first thing I'm wondering is what int you are inside of in
that trace. Eventually it does iret, but there was never an int that I
can see. Was part of the trace omitted?
The other thing is that you can try patching the conditional jump
immediately after that comparison that never succeeds:
c316:9036 F64408FF test [si+0x8],0xff
c316:903a 7408 je 9044
The op code for jmp 9044 is EB08. This will at least get you past this
while (foo != -1) situation, but it might just loop again or crash
afterwards. You could also try printing the value at the memory
location si+0x8 when you arrive at that instruction to see if it ever
changes.
--
Ryan Underwood, <nemesis@icequake.net>
next parent reply other threads:[~2004-09-10 16:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <BAY15-F39YZMGN7Osdt000486a9@hotmail.com>
2004-09-10 16:16 ` Ryan Underwood [this message]
2004-09-17 4:18 Dos App hangs with DPMI / PIC problem anon permutation
-- strict thread matches above, loose matches on Subject: below --
2004-09-16 16:45 Stas Sergeev
2004-09-16 3:33 anon permutation
2004-09-16 20:01 ` Ryan Underwood
2004-09-15 4:49 anon permutation
2004-09-15 8:54 ` Bart Oldeman
2004-09-15 21:00 ` Ryan Underwood
2004-09-15 21:43 ` Bart Oldeman
2004-09-16 19:58 ` Ryan Underwood
2004-09-09 4:10 anon permutation
2004-09-09 15:02 ` Ryan Underwood
2004-09-09 3:28 anon permutation
2004-09-09 2:42 anon permutation
2004-09-08 9:54 anon permutation
2004-09-08 20:49 ` Ryan Underwood
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