[Xenomai] 32 bits / 64 bits compatibility

Philippe Gerum rpm at xenomai.org
Fri Jan 20 18:33:19 CET 2017


On 01/20/2017 05:12 PM, Stéphane Ancelot wrote:
> Le 17/01/2017 à 11:32, Philippe Gerum a écrit :
>> On 01/17/2017 10:30 AM, Stéphane Ancelot wrote:
>>> Hi,
>>>
>>> In order to keep graphic compatibility with an application, I must run
>>> some xenomai applications in 32 bits.
>>>
>>> Is it possible to have a 64 bits kernel compile xenomai with 32 bits
>>> libs for applications ?
>>>
>> Xenomai 3 supports this, currently for x86.
> I managed to run 32 bits applications , with shared memory using 32 bits
> emulation under 64 bit kernel with xenomai 3.  (latest git next branch
> with 3.18.20 kernel)
> 
> The main problem remains with rtnet.
> ioctl replies with no such device.
> 
> This can be reproduced with rtifconfig 32 and 64 bits version against
> rteth0 interface (that is loaded ...).
> 
> rtifconfig 64bits works , not 32 bit one.
> 

Yes, rtnet does not support mixed ABI.


-- 
Philippe.



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