sim: Fatal if a clocked object is set to have a clock of 0

This patch adds a check to the clocked object constructor to ensure it
is not configured to have a clock period of 0.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/sim/clocked_object.hh b/src/sim/clocked_object.hh
index d9630139a..b0aaa1721 100644
--- a/src/sim/clocked_object.hh
+++ b/src/sim/clocked_object.hh
@@ -46,6 +46,7 @@
 #define __SIM_CLOCKED_OBJECT_HH__
 
 #include "base/intmath.hh"
+#include "base/misc.hh"
 #include "params/ClockedObject.hh"
 #include "sim/core.hh"
 #include "sim/sim_object.hh"
@@ -113,7 +114,11 @@ class ClockedObject : public SimObject
      */
     ClockedObject(const ClockedObjectParams* p) :
         SimObject(p), tick(0), cycle(0), clock(p->clock)
-    { }
+    {
+        if (clock == 0) {
+            fatal("%s has a clock period of zero\n", name());
+        }
+    }
 
     /**
      * Virtual destructor due to inheritance.