From: Maciej Hrebien <m_hrebien@wp.pl>
To: linux-assembly@vger.kernel.org
Subject: Re: paddw vs paddb
Date: Sat, 25 Dec 2004 11:40:42 +0100 [thread overview]
Message-ID: <41CD43AA.B89C81AD@wp.pl> (raw)
In-Reply-To: 20041225072142.80563.qmail@web52908.mail.yahoo.com
Ankit Jain wrote:
>
> thanks
>
> but if u can solve one more problem
>
> 'a' is uint8_t type and i want to extract only 4 int
> and store it as a word in mmx register
>
> i am not able to understand that because movq is
> extracting 8 bytes at a time.
>
> actually the problem is overflow. saturation is not
> tht helpfull
I don't know if i understand your question right but for
32-bit transfers (4 bytes) you have MOVD instruction.
--
Maciej Hrebien
next prev parent reply other threads:[~2004-12-25 10:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-23 10:59 paddw vs paddb Ankit Jain
2004-12-24 9:01 ` Maciej Hrebien
2004-12-25 7:21 ` Ankit Jain
2004-12-25 10:40 ` Maciej Hrebien [this message]
2004-12-29 12:12 ` Ankit Jain
2004-12-29 22:40 ` Maciej Hrebien
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