[libre-riscv-dev] [Bug 357] New: create simplified (testing) version of Function Unit pipeline for test purposes

[bugzilla-daemon@libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=357

            Bug ID: 357
           Summary: create simplified (testing) version of Function Unit
                    pipeline for test purposes
           Product: Libre-SOC's first SoC
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: CONFIRMED
          Severity: enhancement
          Priority: ---
         Component: Source Code
          Assignee: lkcl@lkcl.net
          Reporter: lkcl@lkcl.net
                CC: libre-riscv-dev@lists.libre-riscv.org
   NLnet milestone: ---

a simplified version of a Function Unit pipeline is needed which has
the same functionality as soc.experiment.alu_hier.ALU but has the
soc.fu front-end API (including regspec compliance).

take this code (particularly main_stage.py):
https://git.libre-soc.org/?p=soc.git;a=tree;f=src/soc/fu/alu;hb=HEAD

and cut it *right* back so that it has the same functionality as this:
https://git.libre-soc.org/?p=soc.git;a=blob;f=src/soc/experiment/alu_hier.py;h=bebe6468cc78975e0e98794fe8d5f72321eb0d50;hb=HEAD#l195

but without the mess of the actual ALU side being mixed in with
the pipeline handling.

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