Re: [Xenomai-help] using floating point in rtdm

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

ramon costa wrote:
> Hi,
> 
> I'm trying to port some old stuff from RTLinuxfree.  As a first step I would
> like to recompile
> and check everything. Latter I will try to modify the code structure to  fit
> xenomai structure.
> 
> 
> - let the kernel compile your module as is, this will generated
>> "soft-float" code, which means that the operations will be done in
>> software. Your module will contain undefined references to functions
>> actually implemented in libgcc. So, you will have to extract the needed
>> .o from libgcc.a and put them in your module.
>>
> 
> As this is only "temporary" this is the best option. I think my old
> RTLinuxfree
> code does something similar.
> 
> How can I do this in the Xenomai framework ?

You can do this any way you like. You will have absolutely no help from
the Xenomai framework.

> 
> Does RTDM task store the floating point context during task switching ?

With "soft-float", there is no floating point context to be saved.

-- 
					    Gilles.