ARM linux mailing lists FAQ about floating point support.

[Nicolas Pitre]

On Thu, 10 Sep 2009, Laurent Desnogues wrote:

> On Thu, Sep 10, 2009 at 11:03 PM, Nicolas Pitre <nico at cam.org> wrote:
> > On Thu, 10 Sep 2009, Gilles Chanteperdrix wrote:
> >
> >> Right, it does not work, so, what does:
> >> "Allows the mixing of softfloat and hardfloat code"
> >>
> >> is supposed to mean here for instance:
> >> http://www.eurotech-inc.com/embedded-eabi-linux.asp
> >
> > As I just posted, it looks like gcc only implemented the soft-float ABI
> > when using VFP.  So if your CPU is VFP capable then using
> > -mfloat-abi=softfp should produce actual VFP instructions while still
> > passing function arguments around using non VFP registers.
> 
> Didn't latest CodeSourcery ARM toolchain (2009q1) add hardfp?

I don't know.  If so then the FAQ entry about not being able to mix 
hard-float and soft-float would still apply when using that mode.


Nicolas