From: Damian Yerrick <DONT DOT YOU DOT DAREd_yerrick AT hotmail DOT comSEND DOT SPAM>
Newsgroups: comp.os.msdos.programmer,comp.os.msdos.djgpp
Subject: Re: Is DOS dead?
Organization: Pin Eight Software  http://pineight.8m.com/
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NNTP-Posting-Date: Wed, 15 Mar 2000 13:50:38 GMT
Distribution: world
Date: Wed, 15 Mar 2000 13:50:39 GMT
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

On Tue, 14 Mar 2000 11:51:30 +0100, Michael Tippach <mtippach AT gmx DOT net>
wrote:

>Not as dangerous as SS ("Stack Suicide") in these environments. It would
>always fault at the IRET when the DPMI host finally returns from the
>interrupt handling code. If the IRET would have been a ring transition,
>this would be no good, I suppose. For, a DPMI host running its client at
>ring 3 would not really be prepared to convert exceptions occuring in
>ring 0 into DPMI compliant ones at ring 3 (something to try out,
>really). Then again, if the IRET does NOT cause a ring transition, the
>DPMI host would have very little interest in looking at the source of
>the exception. Business as usual, in that case.
>
>I think that would be the easiest way to fix the NT signal problem,
>because it can be implemented at very little cost (few lines of code)
>without breaking any existing code I could think of.

Then how about writing up a proof-of-concept implementation
and sending the diffs to the djgpp-workers list?

-- 
Damian Yerrick  http://yerricde.tripod.com/
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