[openrisc] software multiplication

[Matjaz Breskvar <phoenix@opencores.org>]

hello!

i've just added support for software multiplication into opencores
gcc-3.2.3. it can be enabled with -msoft-mul switch to the compiler.

just for completness here are other switches and their defaults:

-mhard-mul (*)
-msoft-mul
-mhard-div
-msoft-div (*)
-mhard-float
-msoft-float (*)

(*) === default

since i didn't change the default behaviour i don't
expect any problems, but i may very well be wrong... ;). after all the
testing is done i'll also put this into gcc-3.1.

regards,
p.
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