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[Bug 1001468] eCos GNU tools 4.6.2

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--- Comment #33 from Ilija Kocho <> 2012-03-15 15:44:09 GMT ---
It took some time but now I am able to run kernel fptest.c (with just enough
Cortex-M FPU arch HAL). I tweaked the test so it works with floats rather than
doubles, but also has a double in order to enforce the case from comment 30.
Here's the printout:

INFO:<Run fptest in cyg_start>
INFO:<cyg_start run done>
EXIT:<FP Test done>

(In reply to comment #32)
> (In reply to comment #31)
> > 
> > I am quite busy this week but might find some time to build a new test release
> > based on GCC 4.6.3. I'm not sure if we should apply Jifl's GDB patch for the
> > 'g' packet reply issue or continue with the current "set tdesc" workaround
> > until the merge of his patch with other changes has occurred and we can apply
> > something which reflects the upstream changes. Comments?

I'm not a GDB expert but it is likely that I'll have to implement the target
part of support for VFP registers. I'll have a lot of questions then, but for
the time being is this: would it be possible to also provide similar workaround
(xml file) for VFP?

> There's still a bit of discussion (due to uncertainty on my part in fact), but
> you can be pretty confident something similar to the following (post-merge)
> patch will be applied:
> Or you can leave it out if you don't intend these tools to be the final tools.

My answer is I don't know, but it is very likely that we'll have another
iteration(s) with GDB, at least in order to adopt VFP registers.

> But IMO we shouldn't ship a GDB without something akin to this fix being
> included.

To sum up, I would suggest to restart testing with 4.6.3 asap. That may imply
for the time being to go with GDB as-is (or with work-around) and gain some
time for Jifl's patch + VFP support.

If we agree, I hope John can produce test release before his trip to USA.


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