GCC 4.1.1 m68k-rtems generating invalid code for -m5307 proce ssor ?
Chris Johns
chrisj at rtems.org
Wed Jun 27 09:55:14 UTC 2007
Ralf Corsepius wrote:
>
> So you are saying a fundamental multilib variant is missing from the
> rtems-m68k multilibs?
>
Given Ian's actual results and what I found taking a look at the m68k.md in
gcc-4.2.0 I think there could be.
I found TARGET_CFV4, TARGET_CF_HWDIV, and TARGET_COLDFIRE_FPU used. I do not
know how TARGET_CF_HWDIV is defined and the v4 core has an FPU.
So I would have thought a set of libs for the v4 core and if the HWDIV is
supported on the v3 core and gcc uses it then this should also be considered.
> While we're at it: The m68k port in upstream GCC is a shape, it is not
> unlikely RTEMS can't avoid stop supporting the m68k.
I am sorry but I do not understand this sentence.
> I hope, such an escalation can be avoided, but ATM I can't exclude
> anything. I can only encourage anybody being interested future m68k
> support in GCC/rtems to actively contribute to upstream FSF-GCC.
I was under the impression Freescale was getting Codesourcery to update gcc to
better support the Coldfire. I am not sure on the status of this work and how
it relates to the FSF source.
Regards
Chris
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