From:	Michele Manzato <aragorn AT dei DOT unipd DOT it>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Return from interrupts to a different location
Date:	Tue, 10 Nov 1998 22:51:06 +0100
Organization:	BBS - Universita' di Padova - Italia
Lines:	27
Message-ID:	<Pine.SOL.3.96.981110224845.25516A-100000@marina>
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Hello everybody.

How can I return to a different location on a different stack from an
hardware interrupt service routine? 

It seems that the DPMI server switches to a local stack when the expected 
hardware interrupt is generated, and only then my ISR gets called. So
(apparently) I have no way of knowing neither the CS:EIP nor the ES:ESP
where the execution was at when the hw interrupt was generated, let alone
changing them to return to a different CS:EIP, SS:ESP upon IRET.

Is there any way out?

Ethernal gratitude will be owed to everybody who answered this question.



					Michele

-- Michele Manzato -------------------------------------------------------
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