From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: han <hshouqian@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] unknown symbol __fixunsdfdi
Date: Mon, 05 Oct 2009 11:09:32 +0200 [thread overview]
Message-ID: <4AC9B7CC.6020503@domain.hid> (raw)
In-Reply-To: <11140985.42301254710355962.JavaMail.coremail@domain.hid>
han wrote:
> Hello everyone！
> I'm Porting a rtai/linux application to xenomai/linux. Now I come across a problem：
> when I compile the kernel module of my program，I find a WARNING,
> WARNING：“__fixunsdfdi”[freqmod.ko] undefined！
> after compiling，I insmod the module xeno_native.ko，
> then insmod my kernel module freqmod.ko，then I come across an error：
> insmod:error inserting 'freqmod.ko':-1 Unknown symbol in module
> dmesg，it tells me:
> unknown symbol __fixunsdfdi。
>
> Before being portted to xenomai/linux (linux-2.6.24,xenomai-2.4.3,gcc-4.1.1)，
> it run ok in rtai/linux （linux-2.6.24，rtai-3.7，gcc-4.1.1），
> and I only transport the RTAI API to Xeno's native API. So what's wrong? I'm looking forward to your answers!
> Thank you very much !
You are using FPU in kernel-space. It is bad. If you really want to do
that, you should import that function from the static libgcc.
--
Gilles
next prev parent reply other threads:[~2009-10-05 9:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-05 2:39 [Xenomai-help] unknown symbol __fixunsdfdi han
2009-10-05 9:09 ` Gilles Chanteperdrix [this message]
[not found] ` <2259155.256821254816690185.JavaMail.coremail@domain.hid>
2009-10-06 8:55 ` Gilles Chanteperdrix
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