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Re: iWMMXt/Linux EABI toolchain


--- Paul Brook <paul@codesourcery.com> wrote:

> On Wednesday 01 March 2006 05:05, Daniel Jacobowitz wrote:
> > On Wed, Mar 01, 2006 at 04:57:03AM +0000, Steven Newbury wrote:
> > > Thanks for the quick response!
> > > I'm sure it seems I like to make hard wok for myself! It gets worse, I'm
> > > porting Gentoo Linux to iWMMXt with pure EABI kernel and userspace.  I'm
> > > not concerned about being able to run old binaries. So is using
> > > abi=iwmmxt really not what I want? A really bad idea?
> >
> > Absolutely.  You want the AAPCS, not Intel's pre-AAPCS ABI.
> 
> Actually, -mabi=iwmmxt is AAPCS based. It's diffferent from the old intel 
> iwmmxt ABI.
> 
> Having said that, it probably hasn't been tested particularly well, and I 
> wouldn't advise using it unless you really need it (ie. you know you have 
> performace sensitive code that makes extensive use of iWMMXt vector types in 
> function arguments).
My project is to build a complete system optimized for iWMMXt.  I am expecting
to have to do the odd bit of debugging when things break, so I'll be doing the
testing..!


Steve


	
	
		
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