From: Jeff Dike <jdike@addtoit.com>
To: Blaisorblade <blaisorblade@yahoo.it>
Cc: user-mode-linux-user@lists.sourceforge.net,
Jason Lunz <lunz@falooley.org>,
user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] Re: (implementation idea) Re: uml and nonstandard memory splits?
Date: Thu, 23 Mar 2006 21:30:29 -0500 [thread overview]
Message-ID: <20060324023029.GD8104@ccure.user-mode-linux.org> (raw)
In-Reply-To: <200603240156.36646.blaisorblade@yahoo.it>
On Fri, Mar 24, 2006 at 01:56:32AM +0100, Blaisorblade wrote:
> I don't think it's easy - however, it can be done. Below my idea - Jeff,
> please comment on this
>
> In assembly.
> It goes like this:
>
> call label /*this is coded like a relative jump, i.e. call +1*/
> label: pop $eax /*we got the saved EIP*/
>
> /* Now we can round EIP and subtract an offset to calculate the data page
> location.
> */
How does this give us the location of the data page?
You really want to know the end of the process address space, which
you can do by taking the address of a convenient local and rounding up
to the nearest 1G or .5G or so.
Jeff
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next prev parent reply other threads:[~2006-03-24 2:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <dvv6ir$ajn$1@sea.gmane.org>
[not found] ` <20060323235044.GA7273@ccure.user-mode-linux.org>
[not found] ` <20060324004052.GA1897@knob.reflex>
2006-03-24 0:56 ` [uml-devel] (implementation idea) Re: uml and nonstandard memory splits? Blaisorblade
2006-03-24 2:30 ` Jeff Dike [this message]
2006-03-24 14:34 ` [uml-devel] " Blaisorblade
2006-03-24 16:40 ` Jason Lunz
2006-03-24 17:26 ` Jeff Dike
2006-03-27 22:30 ` Blaisorblade
2006-03-28 20:02 ` Jeff Dike
2006-03-28 22:05 ` [uml-devel] Re: [uml-user] " Blaisorblade
2006-03-28 22:09 ` Blaisorblade
2006-03-28 20:09 [uml-devel] " Jeff Dike
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