Re: coldfire math when using gcc

[Chris Johns <cjohns at cybertec dot com dot au>]

Dwight Schauer wrote:
> 
> Hello,
> I am using m68k-elf-gcc version egcs-2.91.66 compiled for use in uClinux
> coldfire. I'm using uClinux-coldfire-20000119.tar.gz and
> uClinux-coldfire-tools-20000119.tar.gz
> 
> After some benchmarking I came to the conclusion that the hardware divide is
> not being used. Is there any compiler option to turn this on?
>

If this is the egcs-1.1.something release then it I suspect it will not
support the hardware divide or mac instructions.

> 
> I'm trying to evaluate the uClinux floating point support to see it will be
> adequate for a particular application.
> 
> Thanks for any help concerning this, or any direction pointing to the
> appropriate FAQs or HOWTOs.
> 

Wayne Deeter, David Fiddes and others have been working on the support.
You can find info about it on :

  http://fiddes.net/coldfire/

I do not know the status of these patches or if anyone has attempted to
get them into the gcc and binutils sources.

-- 
 Chris Johns, mailto:cjohns@cybertec.com.au mailto:ccj@acm.org

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