From: Aurelien Jarno <aurelien@aurel32.net>
To: Zhi-zhou Zhang <etou.zh@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] r4k doesn't support movz
Date: Sat, 19 May 2012 11:02:40 +0200 [thread overview]
Message-ID: <20120519090239.GA15511@hall.aurel32.net> (raw)
In-Reply-To: <CACFOYQmcUGEmsrMHTCphdUsN0is3TvQix3vM=qx5GUvQhoqHWw@mail.gmail.com>
On Fri, May 18, 2012 at 07:38:39PM +0800, Zhi-zhou Zhang wrote:
> Hi Aurelien,
>
> I found that when qemu-system-mips64el executed 'movz' with -M mips, it
> would raise a reserved instruction exception.
> The mips spec describes movz as below:
>
> Mnemonic Instructio Defined in MIPS ISA
> MOVZ Move Conditional on Zero MIPS32
>
> I think ISA-64 should support MIPS32 instructions for compatible. am I
> right?
>
MIPS64 does support MIPS32 instructions. That said, the default CPU of
the mips machine with qemu-system-mips64el is an R4000 CPU which doesn't
support this instruction.
You should try for example with a 5Kc, 5Kf or 20Kc CPU.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
aurelien@aurel32.net http://www.aurel32.net
next prev parent reply other threads:[~2012-05-19 9:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-18 11:38 [Qemu-devel] r4k doesn't support movz Zhi-zhou Zhang
2012-05-19 1:02 ` Johnson, Eric
2012-05-19 2:30 ` Jia Liu
2012-05-19 9:02 ` Aurelien Jarno [this message]
-- strict thread matches above, loose matches on Subject: below --
2012-05-18 19:52 Hervé Poussineau
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