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Re: [Qemu-devel] Adding support for MIPS64 as host

From: Rtp
Subject: Re: [Qemu-devel] Adding support for MIPS64 as host
Date: Fri, 05 Feb 2010 10:22:18 +0100
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.3 (gnu/linux)

pinery <address@hidden> writes:


> 於 四,2010-02-04 於 22:56 +0530,Utkarsh Sopan 提到:
>> Can you tell me what is the status of adding MIPS64 support?
>> as at the wiki page it showed Red earlier.
>> On Wed, Feb 3, 2010 at 10:29 PM, Laurent Desnogues
>> <address@hidden> wrote:
>>         On Wed, Feb 3, 2010 at 5:53 PM, Utkarsh Sopan
>>         <address@hidden> wrote:
>>         > I am trying to add support for MIPS 64 as Host machine as my
>>         academic
>>         > project.
>>         Note that some work has already been done for MIPS host
>>         support.
>>         > I am new to QEMU.
>>         >
>>         > Problem is I dont have a MIPS 64 machine to test on.
>>         > Please suggest whether or not I can use a nested QEMU
>>         emulator to test the
>>         > same.
>>         > i.e. running my version on top of a simulated MIPS64
>>         machine.
>>         >
>>         > Is it possible to do so?
>>         I was able to run on an x86_64 host, an ARM-hosted QEMU
>>         simulating
>>         x86.  That was for Linux user mode.  I can't say if that would
>>         work for
>>         other targets or for system simulation.
>>         Laurent
> A  company called lemote[1] sells laptop and mini-PC based MIPS
> CPU ,loongson[2],a 800M 64-bit four-issues out-of-order execution
> Superscalar architecture. Quad-Core Loongson-3 Processor has been taped
> out by ST Microelectronics. Currently,I run qemu on my loongson
> computer,but qemu crashs during booting.

Unfortunately, you won't get further for now. There's a cache problem
leading to bad relocation (in case of relocations, jump to label are
"transformed" into jump to next instruction). See linux-mips mailing
list, there was on thread about it.


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