From: Matthias-Christian Ott <matthias.christian@tiscali.de>
To: Grzegorz Kulewski <kangur@polcom.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: IA32 | [OFFTOPIC]: Segementation Question
Date: Thu, 02 Jun 2005 21:43:30 +0200 [thread overview]
Message-ID: <429F6162.2080608@tiscali.de> (raw)
In-Reply-To: <Pine.LNX.4.63.0506022115370.14006@alpha.polcom.net>
Grzegorz Kulewski wrote:
> On Thu, 2 Jun 2005, Matthias-Christian Ott wrote:
>
>> Hi.
>> I'm currently doing some research on the IA32 Segementation Concept.
>> But there's one thing I don't understand:
>> If I perform a far jump it looks like this:
>> jmp 16bit:32bit
>>
>> The 16bit are representing the segement number and the 32bit the
>> offset. But to what refers the 16bit? To the GDT or the current LDT?
>
>
> IIRC, there is one bit flag in selector that decides if it is from GDT
> or LDT. But maybe I am wrong...
>
>
> Grzegorz Kulewski
>
Ok, you're right, I read over this (see IA-32 Manual Part 3, Page 81).
--
Matthias-Christian Ott
prev parent reply other threads:[~2005-06-02 21:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-02 19:06 IA32 | [OFFTOPIC]: Segementation Question Matthias-Christian Ott
2005-06-02 19:17 ` Grzegorz Kulewski
2005-06-02 19:43 ` Matthias-Christian Ott [this message]
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