Random replacement for HINT instructions (!320) · Merge requests · OpenHW Group / backup-20241120 / cv32e40s

Eclipse Webmaster requested to merge github/fork/silabs-oysteink/random-hint into master Oct 07, 2022

Created by: silabs-oysteink

Implemented random replacement for HINT instruction (c.slli with rd==x0 and immediate != 0).

Replacement instruction is taken from the random instruction generation within the dummy module. Hints are replaced by add/and/mul/bltu, but will show up on RVFI as c.slli.

Removed lfsr_lockup[0] as a cause of counter reset for the dummy module, as this could violate the dummy frequency.

Signed-off-by: Oystein Knauserud Oystein.Knauserud@silabs.com

Random replacement for HINT instructions

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