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Re: Why mips eret failed?

from [wilbur.chan] [Permanent Link][Original]
To: Adam Jiang <jiang.adam@gmail.com>, "wilbur.chan" <wilbur512@gmail.com>, David Daney <ddaney@caviumnetworks.com>, Linux MIPS Mailing List <linux-mips@linux-mips.org>
Subject: Re: Why mips eret failed?
From: "wilbur.chan" <wilbur512@gmail.com>
Date: Thu, 30 Sep 2010 00:54:59 +0800
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In-reply-to: <20100929031018.GB7999@rcwf64-moto>
References: <AANLkTi==9kzfqq=Ubdo9Ms_9N=N+7rmcvg01500C4nuc@mail.gmail.com> <4CA21E5D.7080905@caviumnetworks.com> <AANLkTik6Uv_=G4NR41oiwTai=+pRvLy+t1U9rU3ZD=3c@mail.gmail.com> <20100929031018.GB7999@rcwf64-moto>
Sender: linux-mips-bounce@linux-mips.org 
2010/9/29, Adam Jiang <jiang.adam@gmail.com>:
> Quick reply on top
>
> Take a look at
>
> https://www.ibm.com/developerworks/mydeveloperworks/blogs/ddou/tags/u-boot?lang=en
>
> This may help, I suppose. Why don't forward this message to uboot
> mailing list?
>
>

I found this article  useful ,and found  drawback in my implemtation


 That is , I've not fixed  gp before jump to do_IRQ.

   LEAF(handle_int)
        nop
        SAVE_ALL
        CLI
       /*haven't fix gp*/
        la     t9,do_IRQ
        nop
        jalr   t9
        nop
        RESTORE_ALL
       nop
  END(handle_int)
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