In enabling processor support for the C extension, we need to:

• Modify the instruction decode unit to expand an instruction from its compressed to its uncompressed counterpart.
• This will also have an influence on the path which we forward the value of an instruction to i.e. the ImmGen component. Currently, these are hooked directly to the value of the read instruction coming out of the IFID stage. Instead, they need to be hooked up to the expanded instruction, presumably as an output of the modified decode unit.