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Re: [PATCH -v1] MIPS: a few of fixups and cleanups for the compressed k

To: Chih-hung Lu <>
Subject: Re: [PATCH -v1] MIPS: a few of fixups and cleanups for the compressed kernel support
From: Wu Zhangjin <>
Date: Fri, 30 Oct 2009 10:53:36 +0800
Cc: Linux-MIPS <>
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Organization: DSLab, Lanzhou University, China
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On Fri, 2009-10-30 at 10:16 +0800, Chih-hung Lu wrote:
> 2009/10/29 Wu Zhangjin <>:
> > From: Wu Zhangjin <>
> >
> > This patch indents the instructions in the delay slot of the file which
> > has a ".set noreorder" added.
> >
> > and also, the "addu a0, 4" instruction is replaced by "addiu a0, a0, 4".
> Hi,
> May I ask a question,
> what is the difference between "addu a0, 4" and "addiu a0, a0, 4"?
> They look same to me.


Although they function the same under gas("addu a0, 4" will be assembled
to "addiu a0, a0, 4"), but herein is exactly an immediate data
operation, I just keep it be what it is! only a "cleanup" here.

Thanks & Regards,
        Wu Zhangjin

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