Multiple telnet sessions

[Brett Swimley]

I found my problem. 

It turns out the the FP context switch WAS incorrect. 

I had added support for the MCF547x FPU, and had an incorrect size for 
the space required to store the floating point registers.

Brett

Joel Sherrill wrote:
> Brett Swimley wrote:
>> Hi,
>>
>> I'm working on a telnet like server for a Python interpreter (which 
>> I'm hoping to post on the wiki) and am running into some problems.
>>
>> I thought I would go back to the basics and work with the telnetd 
>> server provided.
>>
>> I have initialized as follows:
>>
>> #ifdef ENABLE_TELNET
>>   /******************************************
>>    * Just in case we may want to telnet to the application.
>>   ****************************************/
>>   rtems_pty_maximum_ptys = 10;
>>   rtems_io_register_driver( 0, &pty_driver_address_table, &pty_major );
>>   rtems_telnetd_main(0, NULL);
>> #endif
>>
>>  
>> Things work OK until I get multiple telnet sessions running.  Then, 
>> typing text into the first session causes an exception in 
>> _Thread_Dispatch() in _CPU_Context_restore_fp() (which may be an 
>> artifact of another issue).
>>
>>   
> Sounds like the stack checker kicking in and trying to using printf
> when it is questionable to do so. If you are on a recent enough
> RTEMS, stack checker uses printk.
>
> If you have printk support in your BSP, I would recommend
> changing the printf's in check.s to printk and trying again.
>
>
>> Has anyone run multiple telnet sessions concurrently?  Am I setting 
>> up the pty driver correctly?
>>
>> Thanks in advance,
>>
>> Brett Swimley
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>>   
>