Add mock stage, proper decode tests

1 files changed, 11 insertions, 1 deletions

diff --git a/inc/stage.h b/inc/stage.h
index c0dc6a8..56a3589 100644
--- a/inc/stage.h
+++ b/inc/stage.h
@@ -28,16 +28,26 @@ class Stage
 	virtual ~Stage();
 	/**
 	 * Advances this stage by a single clock cycle.
+	 * A boilerplate version is provided in stage.cc.
+	 *
 	 * @param a DTO object containing the next instruction to be processed.
 	 * @param a response, indicating whether or not the parent pipe stage is
 	 * ready to accept a new instruction object next cycle.
 	 * @return a response, indicating whether this pipeline stage is stalling,
 	 * busy, or done.
+	 *
+	 * Must set the status to STALLED when an operation completes.
 	 */
-	virtual InstrDTO *advance(Response p) = 0;
+	virtual InstrDTO *advance(Response p);
 
   protected:
 	/**
+	 * The function expected to do the majority of the work.
+	 *
+	 * Must set the status to OK when an operation is ready.
+	 */
+	virtual void advance_helper() = 0;
+	/**
 	 * Sets the bit in the condition code register corresponding to `c`.
 	 * @param the condition code to set.
 	 * @param the truthy value to set it to.