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From: "Ahmed S. Darwish" <darwish.07@gmail.com>
To: Andreas Schwab <schwab@suse.de>
Cc: libc-alpha@sourceware.org, libc-alpha@sources.redhat.com,
	linux-kernel@vger.kernel.org
Subject: Re: Linux i386 clone(): %ebx 'frobbing' ?
Date: Sat, 16 Feb 2008 01:07:22 +0200
Message-ID: <20080215230722.GA8012@ubuntu> (raw)
In-Reply-To: <jewsp69e5t.fsf@sykes.suse.de>

Hi Andreas,

On Fri, Feb 15, 2008, Andreas Schwab wrote:
> "Ahmed S. Darwish" <darwish.07@gmail.com> 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).

Thanks a lot for help.

-- 
Ahmed S. Darwish
Homepage: http://darwish.07.googlepages.com
Blog: http://darwish-07.blogspot.com


  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 [this message]
2008-02-15 23:28     ` Andreas Schwab
2008-02-15 23:54       ` Ahmed S. Darwish

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