Message-Id: <m0z0p1D-000S4SC@inti.gov.ar>
Comments: Authenticated sender is <salvador AT natacha DOT inti DOT gov DOT ar>
From: "Salvador Eduardo Tropea (SET)" <salvador AT inti DOT gov DOT ar>
Organization: INTI
To: djgpp-workers AT delorie DOT com, eliz AT is DOT elta DOT co DOT il
Date: Mon, 27 Jul 1998 12:26:38 +0000
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Subject: Re: Pipes
In-reply-to: <199807271439.KAA02462@delorie.com>
References: <Pine DOT SUN DOT 3 DOT 91 DOT 980727173047 DOT 779L-100000 AT is> (message from Eli	Zaretskii on Mon, 27 Jul 1998 17:35:31 +0300 (IDT))
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DJ Delorie <dj AT delorie DOT com> wrote:

> > Will longjmp work across different selectors?  (The child has a different 
> > CS/DS/SS, right?)
> 
> longjmp restores these registers:
> 
> 	eax ebx ecx edx esi edi ebp esp eip flags cs ds es fs gs ss

I don't have the code here but I think EAX have a special work here because 
is the setjmp return value.
I'm using longjmps with some tricks, most of the time filling the jmp_buf 
manually.
Additionally longjmp restores a flag about the exceptions state, what's that 
DJ? I know is a pointer that normally is 0, is that to longjmp from 
exceptions and then be able to restore some state information needed by the 
djgpp exception handling routines?

SET 
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