Philippe Gerum wrote:
> On Wed, 2007-01-31 at 01:58 +0100, Philippe Gerum wrote:
> > Ok, no more distant rumblings about x86_64: a Xenomai port to this
> > architecture has officially started. A preliminary version of the I-pipe
> > for x86_64 is now available, which I'm going to use to port the Xenomai
> > core.
>
> Here we are. The following revised I-pipe patch is stable enough to run
> the Xenomai trunk/ on a 4-way Opteron, and on qemu-x86_64 0.8.2 too:
> http://download.gna.org/adeos/patches/v2.6/x86_64/adeos-ipipe-2.6.19-x86_64-1.0-02.patch
>
> The status of the Xenomai/x86_64 port is as follows:
>
> - real-time support in user-space is mostly ok, except the FPU
> management over the Xenomai domain which is broken beyond all
> recognition. Gilles, as already discussed, I won't resist to let you
> bang your head on this wall instead of mine, because 1) this will allow
> me to switch to the pending issues people have raised on the lists so
> far, 2) I'm fundamentally evil, 3) the fact that you once did dare
> rewriting the FPU support for Xenomai/x86 clearly shows that you do have
> some masochistic tendencies anyway.
Ok, I will do it. Do you have an URL of a datasheet at hand (since the
x86 code does not work, there must be some difference) ?
By the way, there is a change that I made to the i386 context switching
routine which I think you should make to the x86_64 one: mark all
register as output registers, this prevent the compiler from considering
that the value of a particular register survived the context
switch.
--
Gilles Chanteperdrix.
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