Forcing use of move instead of movem on M68k (5200/5307)

[Richard Baverstock]

We're using 2.95.3 and 3.4.6 (tried both versions), so nothing really  
recent.

Trying the most recent one (4.1.2) would be a better idea? Or would a  
more recent version of the 3.x series be better?

Thanks,
Richard


On Mar 23, 2007, at 12:15 PM, Ian Lance Taylor wrote:

> Richard Baverstock <rbaverst@engmail.uwaterloo.ca> writes:
>
>> We're having an issue with movem on the coldfire boards we are
>> compiling a program for, and wondering if we can force the m68k gcc
>> compiler to use move instead of movem. movem does not appear to be
>> working on whatever chip variant we have, which severely affects
>> returning from functions. Using the coldfire 5307, tried compiling
>> with -m5200 and -m5307, both use movem.
>
> Unfortunately there is no option to disable movem.  You would have to
> change the compiler source code.
>
> The ColdFire does support movem, although it doesn't support all
> variants.  You didn't mention which version of gcc you are using.
> There have been improvements to the ColdFire support in recent
> releases.
>
> Ian