From: David Miller <davem@davemloft.net>
To: jidong.xiao@gmail.com
Cc: hpa@zytor.com, linux-kernel@vger.kernel.org
Subject: Re: Can anyone explain "movl %eax %eax"?
Date: Wed, 09 Feb 2011 15:05:14 -0800 (PST) [thread overview]
Message-ID: <20110209.150514.115926470.davem@davemloft.net> (raw)
In-Reply-To: <AANLkTimN2oM6E9E34fMffgtH81ZfYcGj6J5nnjGrxGfA@mail.gmail.com>
From: Jidong Xiao <jidong.xiao@gmail.com>
Date: Wed, 9 Feb 2011 18:02:09 -0500
> Oh, I see. Thank you. So similarly, the operation "xorl %eax,%eax" is
> used for the same reason, right? I see that appears in more files.
The xorl clears the entire register.
next prev parent reply other threads:[~2011-02-09 23:04 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-09 22:24 Can anyone explain "movl %eax %eax"? Jidong Xiao
2011-02-09 22:32 ` H. Peter Anvin
2011-02-09 23:02 ` Jidong Xiao
2011-02-09 23:05 ` David Miller [this message]
2011-02-10 1:32 ` Jidong Xiao
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