Re: [Xenomai-help] trap exceptions in user

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

Gabriele Moabiti wrote:
> 
> 
> 
>>> It's a long story... I know anonymous mapping is better but I have need physical contiguos memory
>>> (not for the test of course). The binary blob has fixed addresses between 1 to 16 MB so I have mapped the 
>> To do this with RTDM, you should use rtdm_mmap_to_user, not
>> rtdm_iomap_to_user. And to do this with an anonymous mapping, you simply
>> need to pass the address where you want the mmap to occur to mmap, and
>> pass MAP_FIXED to mmap flags, this is all documented in mmap manual.
> 
> I did't specify I have passed mem=xxx to kernel to take the upper 16MB so I have to use rtdm_iomap_to_user.
> I think the RTDM mapping works.
> 
>>> I start UD from the terminal and the terminal always report the right error.
>> Ok. Probably the I-pipe patch only calls your callback for real-time
>> tasks. Is the thread which runs the binary blob created with xenomai
>> services ?
> 
> my_rt_task_func()
> {
>     int 3 // This is trapped by the custom exception routine (forwarded to xenomai handler). The terminal write
>             // trace/breakpoint trap
> }

This does not tell me how the thread running "my_rt_task_func" is created.

-- 
                                                 Gilles.