--wrap ld functionality does not work with Init RTEMS function

[Joel Sherrill]

Aitor Viana wrote:
> Hi all,
>
>
>
> On Tue, Apr 8, 2008 at 7:38 PM, Thomas Dörfler 
> <Thomas.Doerfler at embedded-brains.de 
> <mailto:Thomas.Doerfler at embedded-brains.de>> wrote:
>
>     Hi,
>
>     Joel Sherrill schrieb:
>     > Aitor.Viana.Sanchez at esa.int <mailto:Aitor.Viana.Sanchez at esa.int>
>     wrote:
>     >
>     >> Hi all,
>     >>
>     >> does anybody knows why when trying to wrap the Init RTEMS function
>     >> with the ld --wrap functionality everything compiles well but
>     >> eventually the wrapper function is not executed?
>     >>
>     >> Maybe I am missing something, but is taking me a while to
>     discover why.
>     >>
>     >>
>     > Init is a task/thread and threads will not return to the wrapper.
>     > They are entered but exit via rtems_task_delete or pthread_exit.
>     >
>     > I would expect the wrapper to be entered, then Init but no return
>     > from Init.
>     >
>     Normally Init will be referenced from within the same module: The
>     "init.c" module contains the first task AND the default list in init
>     tasks (somehwere deep down in system.h -> confdefs.h). And therefore I
>     would expect that the pointer in the list of init tasks will point to
>     the REAL function, no matter how it might have been renamed.
>
>     Does this make sense?
>
>
> yes, I think this is the problem, the indirect point. Because when 
> trying to wrap the Init function, the wrapper function (__wrap_Init()) 
> is never called, maybe because it is called from an indirect pointer.
> I will try to dig deeply...but I would really need to wrap the Init 
> function (task, thread, whatever).
My example worked with an indirect function pointer. 

Can you look at the Initialization_tasks[] structure contents on the target?
That way we can see if the table entry was right.
>
>
>     wkr,
>     Thomas.
>
>     >> Regards,
>     >>
>     >> Aitor
>     >>
>     >
>     >
>     >
>
>
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-- 
Joel Sherrill, Ph.D.             Director of Research & Development
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