diff options
Diffstat (limited to 'inc/stage.h')
| -rw-r--r-- | inc/stage.h | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/inc/stage.h b/inc/stage.h index 03048b0..2f9812f 100644 --- a/inc/stage.h +++ b/inc/stage.h @@ -34,7 +34,7 @@ class Stage * ready to accept a new instruction object next cycle. * @return a DTO object containing the next instruction to be processed. * - * Must set the status to STALLED when an operation completes. + * Must set the status to WAIT when the current instruction is evicted.. */ virtual InstrDTO *advance(Response p); @@ -47,6 +47,12 @@ class Stage * @param the condition code to retrieve, */ bool get_condition(CC c); + /** + * 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. + */ + void set_condition(CC c, bool v); /** * Sets the value of the PC register. @@ -62,16 +68,12 @@ class Stage /** * The function expected to do the majority of the work. * - * Must set the status to OK when an operation is ready. + * Must set the status to OK when an operation is done. + * Must set the status to STALLED when an operation cannot be completed the + * current cycle. */ 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. - */ - void set_condition(CC c, bool v); - /** * Helper for `check_out`. * Returns true if r are not checked out, false otherwise. * @param a list of register numbers. |