From: Martin Stromberg <Martin DOT Stromberg AT lu DOT erisoft DOT se>
Message-Id: <200001131607.RAA14568@spica-144.lu.erisoft.se>
Subject: Re: Problems with protected_mode_int
To: eliz AT is DOT elta DOT co DOT il (Eli Zaretskii)
Date: Thu, 13 Jan 100 17:07:47 +0100 (MET)
Cc: djgpp AT delorie DOT com (DJGPP)
In-Reply-To: <Pine.SUN.3.91.1000113175705.12754K-100000@is> from "Eli Zaretskii" at Jan 13, 0 06:00:16 pm
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Eli said:
> On Thu, 13 Jan 100, Martin Stromberg wrote:
> > Are you saying the base and offsets of CS is different than those of DS?
> > If yes, then it won't work. 
> 
> The base and limit are the same, but not the access rights.  If you 
> pass _my_ss() to the functions which installes the handler, it will
> use the SS (actually, the DS) selector, and trigger a GPF due to access
> rights.

Yeah! But of course I'm passing CS not SS! Where did I say I passed SS?

> In addition, in this specific case, the user reported he was using DJGPP 
> v1.x, where SS was loaded with a different selector (which was the reason 
> why -fomit-frame-pointer didn't work).

Yes, but now we are discussing running code on the stack.


This Mortal Coil, Blood,

							MartinS