Re: [openrisc] Important or1k question...

["Damjan Lampret" <lampret@opencores.org>]

Someone really needs to checkout everything regarding 32-bit and 64-bit
symbiosis. I guess one way would be to add support for 64-bit part of the
architecture into gcc and simulator and during adding support we could see
what to modify so that 32-bit and 64-bit.

Idea behind 64-bit and 32-bit is that 32-bit core can be easily modified to
be 64-bit. Anyway I'm too much deep into OR1200 (which is purely 32-bit) and
don't have time to investigate 64-bit part of the architecture. If there are
any voluteers ....

regards,
Damjan

----- Original Message -----
From: Matan Ziv-Av <matan@svgalib.org>
To: <openrisc@opencores.org>
Sent: Friday, June 29, 2001 4:51 AM
Subject: Re: [openrisc] Important or1k question...


> On Fri, 29 Jun 2001, Damjan Lampret wrote:
>
> > I see no reason why implementation shouldn't be able to have 64-bit
VFPRs
> > and 32-bit GPRs. So the answer would be yes.
>
> Then you need to add an instruction between
> lf.ftoi.s and lf.ftoi.d (that copies a single fpr to two gprs).
>
>
> --
> Matan Ziv-Av.                         matan@svgalib.org
>
>
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