mem: Make the XBar responsible for tracking response routing

[gem5.git] / src / sim / root.cc

diff --git a/src/sim/root.cc b/src/sim/root.cc
index dd7c1207711fa822ae84dc346d127a2d0897a796..9bb8b4f05cba5fcf886869915fa71e3a3b3e5518 100644 (file)
--- a/src/sim/root.cc
+++ b/src/sim/root.cc
@@ -32,7 +32,10 @@
  */
 
 #include "base/misc.hh"
+#include "base/trace.hh"
+#include "config/the_isa.hh"
 #include "debug/TimeSync.hh"
+#include "sim/full_system.hh"
 #include "sim/root.hh"
 
 Root *Root::_root = NULL;
@@ -109,6 +112,8 @@ Root::Root(RootParams *p) : SimObject(p), _enabled(false),
     assert(_root == NULL);
     _root = this;
     lastTime.setTimer();
+
+    simQuantum = p->sim_quantum;
 }
 
 void
@@ -120,9 +125,48 @@ Root::initState()
 void
 Root::loadState(Checkpoint *cp)
 {
+    SimObject::loadState(cp);
     timeSyncEnable(params()->time_sync_enable);
 }
 
+void
+Root::serialize(std::ostream &os)
+{
+    uint64_t cpt_ver = gem5CheckpointVersion;
+    SERIALIZE_SCALAR(cpt_ver);
+    SERIALIZE_SCALAR(FullSystem);
+    std::string isa = THE_ISA_STR;
+    SERIALIZE_SCALAR(isa);
+}
+
+void
+Root::unserialize(Checkpoint *cp, const std::string &section)
+{
+    uint64_t cpt_ver = 0;
+    UNSERIALIZE_OPT_SCALAR(cpt_ver);
+    if (cpt_ver < gem5CheckpointVersion) {
+        warn("**********************************************************\n");
+        warn("!!!! Checkpoint ver %#x is older than current ver %#x !!!!\n",
+                cpt_ver, gem5CheckpointVersion);
+        warn("You might experience some issues when restoring and should run "
+             "the checkpoint upgrader (util/cpt_upgrader.py) on your "
+             "checkpoint\n");
+        warn("**********************************************************\n");
+    } else if (cpt_ver > gem5CheckpointVersion) {
+        warn("**********************************************************\n");
+        warn("!!!! Checkpoint ver %#x is newer than current ver %#x !!!!\n",
+                cpt_ver, gem5CheckpointVersion);
+        warn("Running a new checkpoint with an older version of gem5 is not "
+             "supported. While it might work, you may experience incorrect "
+             "behavior or crashes.\n");
+        warn("**********************************************************\n");
+     }
+}
+
+
+bool FullSystem;
+unsigned int FullSystemInt;
+
 Root *
 RootParams::create()
 {
@@ -132,5 +176,8 @@ RootParams::create()
 
     created = true;
 
+    FullSystem = full_system;
+    FullSystemInt = full_system ? 1 : 0;
+
     return new Root(this);
 }