From: Phillip Susi <psusi@cfl.rr.com>
To: "linux-os (Dick Johnson)" <linux-os@analogic.com>
Cc: Jun Sun <jsun@junsun.net>, linux-kernel@vger.kernel.org
Subject: Re: failed 'ljmp' in linear addressing mode
Date: Thu, 30 Nov 2006 11:17:54 -0500 [thread overview]
Message-ID: <456F0432.8010203@cfl.rr.com> (raw)
In-Reply-To: <Pine.LNX.4.61.0611280806280.7116@chaos.analogic.com>
linux-os (Dick Johnson) wrote:
> Get a copy of the Intel 486 Microprocessor Reference Manual or read it on-
> line. There is no way that you can make a call like that. You would need to
> call through a task-gate or otherwise set the code-segment and the instruction
> pointer at the same instant. First, look at the startup code for a GDT entry
Setting the code segment and instruction pointer at the same time is
exactly what the long jump does.
OP: What is at the linear address 0x10000000?
next prev parent reply other threads:[~2006-11-30 16:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-22 23:41 failed 'ljmp' in linear addressing mode Jun Sun
2006-11-27 13:58 ` linux-os (Dick Johnson)
2006-11-27 23:16 ` Jun Sun
2006-11-28 13:46 ` linux-os (Dick Johnson)
2006-11-28 19:45 ` Jun Sun
2006-11-28 23:49 ` linux-os (Dick Johnson)
2006-11-29 1:40 ` Jun Sun
2006-11-30 4:53 ` Jun Sun
2006-11-30 16:17 ` Phillip Susi [this message]
2006-12-01 22:20 ` Jun Sun
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