Subject: Re: 64-bit ABIs
To: Steve Woodford <scw@netbsd.org>
From: Ignatios Souvatzis <is@netbsd.org>
List: tech-userlevel
Date: 04/29/2003 20:41:32
On Tue, Apr 29, 2003 at 05:43:01PM +0100, Steve Woodford wrote:
> On Tue, 29 Apr 2003, David Laight wrote:
> 
> > > (64-bit MIPS keeps 32-bit values in registers sign-extended into the
> > > upper 32-bits.  so, a uint32_t would still be sign extended in the
> > > register.  64-bit values are, of course, kept as 64-bit values.  8-)
> >
> > That could bring some bugs out of the woodwork..
> 
> They're out and squished already (for most of the kernel, at least)
> courtesy of the SH5 port, where registers are always 64-bits regardless
> of the ABI.

Ah, so we're Cray-proof now?
	-is

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