New M68K target for GCC

[Joel Sherrill]

Kirspel, Kevin {Engineering - Osmetech CCD} wrote:
> It does have the same core but has the A instruction set architecture
> and the normal MAC vs. the A+ instruction set architecture and the
> enhanced MAC for the MCF5329. The 528x processor has a version 2 core
> but supports the A+ instruction set architecture and the enhanced MAC.
> I wanted to combine these to use the version 3 core, the A+ instruction
> set architecture, and the enhanced MAC.  
>
> I can get started with the -m5307 but I would like to get the other
> features as well.
>
>   
Email Peter Barada and cc me.  I see patches from him on the gcc list 
which are
not in 4.1.1 which appear to be want you want.  Google "gcc coldfire 
528x" and
you should get at least an ffs pattern.  I am curious what has become of his
effort.  Maybe it is already on the head.

Anyway gcc 4.1.1 already has a -m528x flag but I don't see much magic 
based on
that yet.

--joel
> Kevin Kirspel
> Research Engineer
> Osmetech
> kevin.kirspel at osmetech.com
> (ph)  770-510-4444 x4568
> (fax) 770-510-4445
>
>
> -----Original Message-----
> From: Thomas Doerfler [mailto:Thomas.Doerfler at embedded-brains.de] 
> Sent: Tuesday, January 16, 2007 10:38 AM
> To: Kirspel, Kevin {Engineering - Osmetech CCD}
> Cc: rtems-users at rtems.org
> Subject: Re: New M68K target for GCC
>
> Kevin,
>
> I would assume that the MCF5329 has the same CORE as the MCF5307, which
> should be supported by GCC. Try option "-m5307"
>
> wkr,
> Thomas Doerfler
>
> Kirspel, Kevin {Engineering - Osmetech CCD} schrieb:
>   
>> I want to patch GCC 4.1.1 to add the MCF532x CoreV3 Coldfire
>>     
> processors.
>   
>> I have the MCF5329EVB evaluation board and I want to get it running
>>     
> with
>   
>> RTEMS.  I have checkout the rtems-4.7-branch from CVS and have patched
>> it with a MCF5329EVB BSP.  To my dismay, GCC does not recognize the
>> -m5329 target option.  I have never tried to update GCC to support a
>>     
> new
>   
>> target processor, but since similar m68k coldfire processors are
>> supported I didn't think it would take to much work to get it to
>> recognize the -m5329 option.  Does anyone know the steps necessary to
>> patch GCC to recognize the MCF5329 processor?
>>
>>     
gcc 4.1.1 appears to already support a -m528x argument.

But I see patches from Peter Barada that appear to be what you are 
looking for but
they are not in the 4.1.1 tree.  For example, this adds an ffs(int) pattern.

http://gcc.gnu.org/ml/gcc-patches/2004-06/msg01592.html

Perhaps we need to ask Peter Barada what's up?

--joel
>>  
>>
>> Kevin Kirspel
>>
>> Research Engineer
>>
>> Osmetech
>>
>> kevin.kirspel at osmetech.com
>>
>> (ph)  770-510-4444 x4568
>>
>> (fax) 770-510-4445
>>
>>  
>>
>>
>>
>>
>>
>>     
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