tutorials for gcc devel ?

["Perret Yannick" <yperret@in2p3.fr>]

Hello again,

I downloaded the GCC manual in order to understand
how job is performed within gcc. I still not have read
everything, but it seems to be a good reference manual
but not so good for understanding how to make a precise
thing.

Does someone knows a tutorial for such things (i.e.
changing/adding things in gcc) ?

In fact for my purpose I managed to add my own calls
(ala instrument-functions) and I also manage to add
new parameters to the __cyg_profile_func_enter, but
only 'int' parameters.
I failed to create a valid 'rtx' filled with a constant
string in the treated function to be transmited to __cyg...

I saw the function 'assign_stack_local' which seems to
be what I need, but I failed to store data inside it and to
obtain its local address to be sent in the emit_library_call.

I also saw that it is possible to create 'tree' elements to
hold constant string (build_string function), but I failed
to transform it into a valid 'rtx' for the emit_library_call.

Some clues of the way to do that ?

Thanks.


Regards,
--
Yannick Perret