I had the same problem when I tried to initialize a thread with
pthread_setfp_np() in the init_module() portion of module. As near as I could
tell, once I pthread_create()'d the module, even though the very next line was
to enable fp, the thread had tried executing fp code before it was enabled to
do so. I inserted a pthread_suspend_np() in the thread and
then a pthread_wakeup_np() in the init and it seemed to work around it.
BTW, is this a silly thing to do? What's the correct order to create threads
and set their parameters if not?
cheers,
-Cory
On Tue, 20 Jun 2000, Paul Jacyk wrote:
> Hello,
>
> I just got the new RTLinux 3.0-pre6. So far it works well. More of my
> program actually runs now than in RTLinux 2.3 (still not all the way)
> I'm running all of this on an AMD K6 machine that according to
> /proc/cpuinfo has a floating point unit.
>
> A message appeared "rtl_debug exception 7" when I inserted my module.
> I'm not sure why this would happen. Isn't floating point supported in
> RTLinux on a K6 ? I compiled the kernel with the "K6/II/III" processor
> option for CONFIG_M386 and all other options set to "no" in the
> processor type and features config. Are the exceptions different on a K6
> than on a intel chip ?
>
> As far as I can tell I'm calling pthread_setfp_np in the correct place.
> If I am not calling in properly what error message will show up ?
>
> >From a table of interrupt assignments in the Intel 386, 486 SX/DX
> processors, and the Pentium processor.
>
> 7 Device not available
> Exception 7 is used to signal that a floating point processor is
> not present in the SX model. Exception 7 is used for programs
> and OSs that have floating point emulation. In addition, the DX
> chips can be set to trap floating point instructions by setting
> bit 2 of CR0.
>
> Thanks,
>
> Paul
>
>
>
>
> -- [rtl] ---
> To unsubscribe:
> echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
> echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
> ---
> For more information on Real-Time Linux see:
> http://www.rtlinux.org/rtlinux/
>
-- [rtl] ---
To unsubscribe:
echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
---
For more information on Real-Time Linux see:
http://www.rtlinux.org/rtlinux/
