* [Xenomai-core] USING FLOATING POINT KERNEL SIDE
@ 2008-03-04 12:49 axel axel
2008-03-04 13:06 ` Wolfgang Grandegger
2008-03-04 13:33 ` Gilles Chanteperdrix
0 siblings, 2 replies; 3+ messages in thread
From: axel axel @ 2008-03-04 12:49 UTC (permalink / raw)
To: xenomai
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Hi,
i want to use floating point in module with some xenomai task.
I understand that i can use floating point if i implement some functions (
xnarch_fpu_init...... ).
Ok for this but if i try to compile the module, the compiler ( gcc 3.4.3 for
arm ) says me there are unresolved symbol like __mulsf3.
Have you ever try a xenomai task that use floating point in kernel space ?
Thanks a lot for your help.
Roberto Bielli
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Xenomai-core] USING FLOATING POINT KERNEL SIDE
2008-03-04 12:49 [Xenomai-core] USING FLOATING POINT KERNEL SIDE axel axel
@ 2008-03-04 13:06 ` Wolfgang Grandegger
2008-03-04 13:33 ` Gilles Chanteperdrix
1 sibling, 0 replies; 3+ messages in thread
From: Wolfgang Grandegger @ 2008-03-04 13:06 UTC (permalink / raw)
To: axel axel; +Cc: xenomai
axel axel wrote:
> Hi,
>
> i want to use floating point in module with some xenomai task.
> I understand that i can use floating point if i implement some functions
> ( xnarch_fpu_init...... ).
>
> Ok for this but if i try to compile the module, the compiler ( gcc 3.4.3
> for arm ) says me there are unresolved symbol like __mulsf3.
>
> Have you ever try a xenomai task that use floating point in kernel space ?
Does your ARM processor have a FPU? If not, you need a FP emulation
library to link with.
Wolfgang.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Xenomai-core] USING FLOATING POINT KERNEL SIDE
2008-03-04 12:49 [Xenomai-core] USING FLOATING POINT KERNEL SIDE axel axel
2008-03-04 13:06 ` Wolfgang Grandegger
@ 2008-03-04 13:33 ` Gilles Chanteperdrix
1 sibling, 0 replies; 3+ messages in thread
From: Gilles Chanteperdrix @ 2008-03-04 13:33 UTC (permalink / raw)
To: axel axel; +Cc: xenomai
On Tue, Mar 4, 2008 at 1:49 PM, axel axel <softaxel@domain.hid> wrote:
> Hi,
>
> i want to use floating point in module with some xenomai task.
> I understand that i can use floating point if i implement some functions (
> xnarch_fpu_init...... ).
>
> Ok for this but if i try to compile the module, the compiler ( gcc 3.4.3 for
> arm ) says me there are unresolved symbol like __mulsf3.
Compile your module with V=1 and you will understand what happens.
--
Gilles Chanteperdrix
^ permalink raw reply [flat|nested] 3+ messages in thread
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2008-03-04 12:49 [Xenomai-core] USING FLOATING POINT KERNEL SIDE axel axel
2008-03-04 13:06 ` Wolfgang Grandegger
2008-03-04 13:33 ` Gilles Chanteperdrix
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