Re: [Xenomai-core] Bug in taskSuspend for user mode vxworks

[Wolfgang Grandegger <wg@domain.hid>]

Niklaus Giger wrote:
> Am Dienstag, 31. Oktober 2006 09:14 schrieb Wolfgang Grandegger:
>> Niklaus Giger wrote:
>>> Am Montag, 30. Oktober 2006 08:31 schrieb Wolfgang Grandegger:
>>>> Niklaus Giger wrote:
>>>>> Am Samstag, 28. Oktober 2006 20:36 schrieb Wolfgang Grandegger:
>>>>>> Niklaus Giger wrote:
>>>>>>> Am Samstag, 28. Oktober 2006 14:54 schrieb Niklaus Giger:
>>>>>>>> Am Freitag, 27. Oktober 2006 18:38 schrieb Philippe Gerum:
>>>>>>>>> On Wed, 2006-10-25 at 23:46 +0200, Niklaus Giger wrote:
>>>>>>>>>> Hi
>>>>>> My impression from our last discussion was that your toolchain is
>>>>>> somehow broken as I was unable to reproduce your problems on (almost)
>>>>>> the same hardware
>>>>>>
>>>>>>> I think I really have to reactivate my old Walnut board to have
>>>>>>> common platform to test with Wolfgang Grandegger.
>>>>>> It would make more sense to use the ELDK4 for comparison. I don't
>>>>>> think it depends on the hardware.
>>>>> As I forced my son to run on his MacMini (Intel Core Duo) only Linux
>>>>> and no MacOsX (he discovered widelands and was quite happy), I had a
>>>>> platform where I could install the CD with ELDK 4.0, which I had laying
>>>>> around.
>>>>>
>>>>> After some setting up of my environment and tweaking my scripts to work
>>>>> with ELDK (e.g. adding --host=ppc CC=ppc_4xx-gcc to my
>>>>> xenomai/configure) I ended
>>>> --host=ppc-linux is already enough with CROSS_COMPILE=ppc_4xx- set.
>>>>
>>>>> up with a nice environment and rootfs with much more precompiled
>>>>> programs than I had ever before. Debugging on the platform is now as
>>>>> good as on my PowerBook.
>>>>>
>>>>> My situation is now as follows:
>>>>> - ELDK 4.0 installed on Debian Etch MacMini
>>>>> - Using ELD 4.0 rootfs ppc_4xx
>>>>> - compiled the kernel uImage, modules, xenomai using ppc_4xx-gcc
>>>>>    (but NOT adding any -mcpu=40x flag to the compiler)
>>>>>
>>>>> The trap 0 in  /proc/xenomai/fault seems to count on each invocation of
>>>>> simple 0:           51    (Data or instruction access)
>>>>> gdb however no does not show anything abnormal, as it says now
>>>>>
>>>>>> This GDB was configured as "ppc-linux"...Using host libthread_db
>>>>>> library "/lib/tls/libthread_db.so.1".
>>>>>>
>>>>>> (gdb) run
>>>>>> Starting program: /bin/simple
>>>>>> [Thread debugging using libthread_db enabled]
>>>>>> [New Thread 805422032 (LWP 639)]
>>>>>> root_thread_init 4[New Thread 805455088 (LWP 642)]
>>>>>>
>>>>>> Program exited normally.
>>>>>> (gdb) quit
>>>>> Though I am still puzzled.
>>>> Could you please send me your Makefile or the compile command to make
>>>> "simple", then I would give it a try on my setup.
>>> Here are the commands
>>> ppc_4xx-gcc -I../.. -I/home/hcu/rootfs/usr/xenomai/include -D_GNU_SOURCE
>>> -D_REENTRANT -I/net/ng/mnt/data.ng/hcu/project/vx_skin -D__XENO__ -g
>>> -DVXWORKS    -c -o simple.o simple.c
>>> ppc_4xx-gcc -o simple
>>> simple.o -L/home/hcu/rootfs/usr/xenomai/lib -lpthread  -lvxworks
>> Again the same question. What versions of kernel, ADEOS-IPIPE and
>> Xenomai are you using.I have some problems to get the kernel booted with
>> the VxWorks skin emulation. I understood, that I must build the Native
>> and POSIX skin as modules and enable the periodic timer support with a
>> resonable frequency.
> I used revision 1747 of the xenomai trunk, linux 2.4.17 + some small patches 
                                                    ^^^^^^
                             I think you mean linux 2.4.14 here.

> (attached) for my system, the attached .config, 
> adeos-ipipe-2.6.14-ppc-1.5-01.patch.
> 
> I have vxworks built-in to enforce that the timers get initialized into the 
> periodic mode.

OK, I will use the same setup for my test.

Wolfgang.
> 
> Best regards
>