From: horseriver <horserivers@gmail.com>
To: Hendrik Visage <hvjunk@gmail.com>
Cc: linux-assembly@vger.kernel.org
Subject: Re: mov instruction
Date: Thu, 7 Feb 2013 12:32:57 +0800 [thread overview]
Message-ID: <20130207043257.GD2669@debian.localdomain> (raw)
In-Reply-To: <CADtGFv=CY+wFMRgzsrp3wcspMEhUYnCKSpQz6vfHJYhTUbVXBQ@mail.gmail.com>
On Thu, Feb 07, 2013 at 03:57:37PM +0200, Hendrik Visage wrote:
> On Thu, Feb 7, 2013 at 5:57 AM, horseriver <horserivers@gmail.com> wrote:
> > hi:)
> >
> > Is here a suitable place to post topics about hardware technology?
> >
> > I am curious about how mov work.
> > Why it can not move data from a mem adress to another adress in one instruction.
> > in this form : mov (eax), (ebx)
>
> That is what the (rep) movs(b/w) etc. operation(s) are designed for
> these "string copy" operations. the old 8086 had those running between
> es:di and ds:si as the registers for this.
Yeah! I remember that.
But why this can not work : mov (eax), (ebx) ? just curious .
thanks!
next prev parent reply other threads:[~2013-02-07 4:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-07 3:57 mov instruction horseriver
2013-02-07 13:57 ` Hendrik Visage
2013-02-07 4:32 ` horseriver [this message]
2013-02-08 20:30 ` Robert Plantz
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