From: "David S. Miller" <davem@davemloft.net>
To: anton@samba.org
Cc: alan@lxorguk.ukuu.org.uk, ioe-lkml@rameria.de,
linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: [PATCH] Add prctl to change endian of a task
Date: Mon, 03 Apr 2006 15:40:48 -0700 (PDT) [thread overview]
Message-ID: <20060403.154048.133638224.davem@davemloft.net> (raw)
In-Reply-To: <20060403223620.GC4704@krispykreme>
From: Anton Blanchard <anton@samba.org>
Date: Tue, 4 Apr 2006 08:36:20 +1000
> The aim is not to implement little endian binaries but to assist
> running portions of code in little endian mode. The thought is we could
> hook up qemu to it and avoid having to byteswap.
>
> While ppc has byteswap integer loads it does not have byteswap floating
> point loads and a byteswap involves loading into the integer unit,
> performing the byteswap, storing to a temporary location and loading
> into the floating point unit. Rather slow.
Doesn't PPC have a PTE bit that does endian swapping? Wouldn't
that be easier to use for something like qemu?
next prev parent reply other threads:[~2006-04-03 22:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-01 22:29 [PATCH] Add prctl to change endian of a task Anton Blanchard
2006-04-02 14:37 ` Ingo Oeser
2006-04-02 14:56 ` Alan Cox
2006-04-03 22:36 ` Anton Blanchard
2006-04-03 22:40 ` David S. Miller [this message]
2006-04-06 5:13 ` Paul Mackerras
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