Re: [Patch] Altivec ABI as default for powerpc64 linux

[Geoff Keating <geoffk at desire dot geoffk dot org>]

> Date: Fri, 30 Jan 2004 19:42:49 -0500
> From: David Edelsohn <dje@watson.ibm.com>

> >>>>> Geoff Keating writes:
> 
> Geoff> It's not set as the default because the default linux64 processor is a
> Geoff> 630, which (as far as I know) doesn't have Altivec.  Perhaps someone
> Geoff> should change that, if linux64 is going to require Altivec.
> 
> 	We are not proposing enabling Altivec by default, but enabling
> Altivec ABI by default.  This ensures that stack alignment is correct and
> varargs are passed in the correct registers for Altivec applications to
> interoperate seemlessly with non-Altivec libraries, etc.

It also means you can't pass vector parameters, since they'd have to
go in vector registers and your chip doesn't have any, correct?

-- 
- Geoffrey Keating <geoffk@geoffk.org>