O3: Make sure fetch doesn't go off into the weeds during speculation.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/sim/system.hh b/src/sim/system.hh
index 0be16247f..a6bc47fc0 100644
--- a/src/sim/system.hh
+++ b/src/sim/system.hh
@@ -105,6 +105,14 @@ class System : public SimObject
      * system.  These threads could be Active or Suspended. */
     int numRunningContexts();
 
+    /** List to store ranges of memories in this system */
+    AddrRangeList memRanges;
+
+    /** check if an address points to valid system memory
+     * and thus we can fetch instructions out of it
+     */
+    bool isMemory(const Addr addr) const;
+
 #if FULL_SYSTEM
     Platform *platform;
     uint64_t init_param;