Merge pull request #45 from bdunahu/dev-sid

MEM WB stage

1 files changed, 9 insertions, 1 deletions

diff --git a/src/sim/stage.cc b/src/sim/stage.cc
index 5b81e4c..be69d77 100644
--- a/src/sim/stage.cc
+++ b/src/sim/stage.cc
@@ -35,7 +35,7 @@ InstrDTO *Stage::advance(Response p)
 	Response n;
 
 	this->advance_helper();
-	if (this->curr_instr != nullptr && p == OK) {
+	if (this->status == OK && this->curr_instr != nullptr && p == OK) {
 		// mutual consent
 		this->curr_instr->set_time_of(this->id, this->clock_cycle);
 		r = new InstrDTO(*this->curr_instr);
@@ -78,3 +78,11 @@ bool Stage::is_checked_out(signed int r)
 	return std::find(this->checked_out.begin(), this->checked_out.end(), r) !=
 		   this->checked_out.end();
 }
+
+void Stage::squash(){
+	this->curr_instr->set_mnemonic(NOP);
+	this->status = OK;
+	if(this->next){
+		this->next->squash();
+	}
+}