From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] xenomai/ipipe arm64 port
Date: Tue, 29 Sep 2015 22:49:45 +0200 [thread overview]
Message-ID: <20150929204945.GD18188@hermes.click-hack.org> (raw)
In-Reply-To: <20150929141439.GS15616@csclub.uwaterloo.ca>
On Tue, Sep 29, 2015 at 10:14:39AM -0400, Lennart Sorensen wrote:
> On Mon, Sep 28, 2015 at 04:57:28PM -0700, Dmitriy Cherkasov wrote:
> > To be accurate, my answer is not "no", but more of a "not yet".
> >
> > My original goal is to get it working without lazy switching, then optimize
> > later if needed.
> >
> > Yes, this looks correct, and thank you for the patch. I've applied it to
> > ipipe and made the relevant changes to Xenomai. I will push this to our
> > gitlab shortly.
> >
> > However, armv8 does not trap divide by zero or overflows, and does not seem
> > to trap other things like sqrt(-1) either (at least on A53). So currently
> > I've been unable to exercise this code.
>
> Wow, they dropped the exceptions from armv8 and just made those bits
> reserved? Why would they do that?
Well, now that I think about it, not a long time ago, I tried
generating FPU exceptions traps on omap3, omap4 and maybe
at91sama5d3 and discovered these processors could not generate such
traps either.
--
Gilles.
https://click-hack.org
next prev parent reply other threads:[~2015-09-29 20:49 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-25 0:13 [Xenomai] xenomai/ipipe arm64 port Don Mahurin
2015-08-25 14:08 ` Philippe Gerum
2015-08-25 15:20 ` Jorge Ramirez Ortiz
2015-08-25 16:13 ` Jan Kiszka
2015-08-25 17:07 ` Jorge Ramirez Ortiz
2015-08-25 17:34 ` Jorge Ramirez Ortiz
2015-08-25 17:36 ` Jan Kiszka
2015-08-25 17:54 ` Jorge Ramirez Ortiz
2015-08-25 18:03 ` Jan Kiszka
2015-08-25 17:34 ` Jan Kiszka
2015-08-25 18:02 ` Jorge Ramirez Ortiz
2015-08-25 18:05 ` Don Mahurin
2015-08-25 18:34 ` Jorge Ramirez Ortiz
2015-08-25 18:36 ` Jan Kiszka
2015-08-25 18:43 ` Philippe Gerum
2015-08-25 18:52 ` Gilles Chanteperdrix
2015-08-26 14:40 ` Jorge Ramirez Ortiz
2015-08-26 16:30 ` Don Mahurin
2015-08-27 17:07 ` Jorge Ramirez Ortiz
2015-08-27 21:56 ` Don Mahurin
2015-09-01 17:45 ` Jorge Ramirez Ortiz
[not found] ` <CAPuu0=jX6ig5L7SJrmPVOhCmOm=gwxEmTafTpOqzE85hOji8CA@mail.gmail.com>
2015-09-01 19:11 ` Jorge Ramirez Ortiz
2015-09-01 19:24 ` Philippe Gerum
2015-09-01 20:14 ` Jorge Ramirez Ortiz
2015-09-01 21:02 ` Hongfei Cheng
2015-09-02 0:43 ` Don Mahurin
2015-09-07 16:03 ` Philippe Gerum
2015-09-24 19:39 ` Dmitriy Cherkasov
2015-09-25 15:02 ` Gilles Chanteperdrix
2015-09-25 17:14 ` Dmitriy Cherkasov
2015-09-25 18:01 ` Gilles Chanteperdrix
2015-09-26 11:24 ` Gilles Chanteperdrix
2015-09-28 23:57 ` Dmitriy Cherkasov
2015-09-29 0:12 ` Gilles Chanteperdrix
2015-09-29 12:54 ` Jorge Ramirez Ortiz
2015-09-29 17:31 ` Dmitriy Cherkasov
2015-09-29 17:47 ` Gilles Chanteperdrix
2015-09-29 20:17 ` Jorge Ramirez Ortiz
2015-09-29 17:05 ` Don Mahurin
2015-09-29 14:14 ` Lennart Sorensen
2015-09-29 20:49 ` Gilles Chanteperdrix [this message]
2015-10-01 23:51 ` Dmitriy Cherkasov
2015-10-02 10:01 ` Gilles Chanteperdrix
2015-10-02 11:55 ` Gilles Chanteperdrix
2015-10-02 20:18 ` Dmitriy Cherkasov
2015-10-03 9:53 ` Philippe Gerum
2015-10-03 10:01 ` Philippe Gerum
2015-10-03 10:05 ` Philippe Gerum
2015-09-01 19:30 ` Philippe Gerum
2015-09-01 20:47 ` Jorge Ramirez Ortiz
2015-09-01 19:44 ` Gilles Chanteperdrix
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