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Date: Fri, 08 Jul 2011 16:44:39 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] Problems with gcc 4.6.0 (rt_task_shadow fails
 with	ENOSYS)
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To: Anders Blomdell <anders.blomdell@domain.hid>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>

On 07/08/2011 04:06 PM, Anders Blomdell wrote:
> On 07/08/2011 02:41 PM, Gilles Chanteperdrix wrote:
>> On 07/07/2011 11:47 PM, Anders Blomdell wrote:
>>> When compiling kernel 2.6.37.3 and xenomai 2.5.6 with "gcc version 4.6.0
>>> 20110530 (Red Hat 4.6.0-9) (GCC)", programs fail with -ENOSYS in
>>> rt_task_shadow. If compiled with "gcc version 4.5.1 20100924 (Red Hat
>>> 4.5.1-4) (GCC)" everything works as expected.
>>
>> Could you send us the disassembly of the two functions?
> Which functions? Print[fk] debugging got me to suspect the 
> syscall/skin_mux interface, but I'm a bit at loss of exactly where the 
> code ends up.

The two rt_task_shadow, the one which works, and the one which does not.

-- 
					    Gilles.