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From: "Ahmed S. Darwish" <>
To: Andreas Schwab <>
Subject: Re: Linux i386 clone(): %ebx 'frobbing' ?
Date: Sat, 16 Feb 2008 01:54:05 +0200
Message-ID: <20080215235405.GB8012@ubuntu> (raw)
In-Reply-To: <>

On Sat, Feb 16, 2008 at 12:28:11AM +0100, Andreas Schwab wrote:
> "Ahmed S. Darwish" <> writes:
> > Hi Andreas,
> >
> > On Fri, Feb 15, 2008, Andreas Schwab wrote:
> >> "Ahmed S. Darwish" <> writes:
> >> 
> >> > I don't understand how the `fn' argument reached the child thread
> >> > in the %ebx register. It's said in the comment that `fn' will be
> >> > popped to child 'in the ebx frobbing below'. But what does that mean ?
> >> 
> >> See "popl %ebx" after "int $0x80".
> >> 
> >
> > I hope I'm not misreading something obvious, but I can't find
> > the code where FUNC(%esp) is stored in %ebx before %ebx value
> > got pushed in the stack (and restored in above 'popl' statement).
> It is stored in the new stack for the child, as explained in the
> comment.  The parent has a different stack.

Ooh great, I got it. Sorry, my mind didn't connect the dots though 
I read the comment several times. Thanks a lot for bearing with me :).


Ahmed S. Darwish

      reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-15 18:42 Ahmed S. Darwish
2008-02-15 20:07 ` Andreas Schwab
2008-02-15 23:07   ` Ahmed S. Darwish
2008-02-15 23:28     ` Andreas Schwab
2008-02-15 23:54       ` Ahmed S. Darwish [this message]

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