Mixing native code and bytecode

[Jerome Roussel <Roussel at AdaCore dot com>]

Hi

I am looking for information about the way GCJ mix native code and
bytecode. I know that the bytecode is interpreted so now I am trying to
understand the interface used to "switch" from native to bytecode and
from bytecode to native. 

For instance, when -findirect-dispatch is used, a vtable needs to be
filled for each native class, but what happens if one method is
inherited from a parent class which is in bytecode form. This is the
kind of question I am trying to understand about the implementation
internals.  

The possibility to mix native code and bytecode is very powerful so I
thought that some papers would explain the mechanism but I haven't found
anything on that matter. If you have a link to such a paper, a
documentation or to some specific source files in GCC to look at, I
would be very grateful.

Thanks for the good work, your technology is amazing!!

Jérôme