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From: Kyle McMartin <kyle@mcmartin.ca>
To: Jes Sorensen <jes@sgi.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>,
	parisc-linux@lists.parisc-linux.org,
	Thibaut VARENE <T-Bone@parisc-linux.org>
Subject: Re: [parisc-linux] [RFC] using 64bit wide registers with 32bit kernel
Date: Mon, 15 May 2006 07:53:04 -0400	[thread overview]
Message-ID: <20060515115304.GA30488@skunkworks.cabal.ca> (raw)
In-Reply-To: <yq0ves7psaw.fsf@jaguar.mkp.net>

On Mon, May 15, 2006 at 05:10:15AM -0400, Jes Sorensen wrote:
> 
> What about setting an ELF flag or somesuch, set a task flag based on
> this and then only do the extended register file backup for these
> apps?
>

There are bits in the PA ELF supplement for stuff like this, for
example you can certainly have a PARISC2_0 ELF32 object file.

I proposed doing exactly this when it was first brought up. There is a
slight snag though, it could get icky internally... Whoever volunteers
to do it would certain be in for some fun in entry.S amongst other places.
Probably more effort than it is worth in other words. On the other hand
the work in the same areas is probably needed to ever support HPUX 
ELF binaries.

Cheers!
	Kyle
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  parent reply	other threads:[~2006-05-15 11:53 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-13 15:41 [parisc-linux] [RFC] using 64bit wide registers with 32bit kernel Thibaut VARENE
2006-05-13 16:33 ` [parisc-linux] " Thibaut VARENE
2006-05-13 17:03 ` [parisc-linux] " James Bottomley
2006-05-13 22:32   ` Thibaut VARENE
     [not found]   ` <yq0ves7psaw.fsf@jaguar.mkp.net>
     [not found]     ` <7d01f9f00605150255u5846f144u9c95cab3ffd35133@mail.gmail.com>
2006-05-15 10:56       ` Jes Sorensen
2006-05-15 11:53     ` Kyle McMartin [this message]
2006-05-13 17:07 ` John David Anglin
2006-05-13 22:43   ` Thibaut VARENE
2006-05-13 23:35     ` John David Anglin
2006-05-14  5:06       ` John Marvin
2006-05-14  6:27       ` Grant Grundler
     [not found]         ` <200605141510.k4EFAUv7006350@hiauly1.hia.nrc.ca>
2006-05-15  1:06           ` Grant Grundler

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