Serialization support for Alpha TLBs, PhysicalMemory, and SimpleCPU.

arch/alpha/alpha_memory.cc:
arch/alpha/alpha_memory.hh:
    Serialize TLB contents.
cpu/simple_cpu/simple_cpu.cc:
cpu/simple_cpu/simple_cpu.hh:
    Complete serialization of SimpleCPU (including owned events).
sim/eventq.cc:
sim/eventq.hh:
    Basic serialization for events.
    Still need to handle dynamic events (not owned by a SimObject).
sim/serialize.cc:
sim/serialize.hh:
    Export serialization filename so PhysicalMemory can
    derive its filename from that.

--HG--
extra : convert_revision : 4db851c5880f73f576ca092d5e5ad4256048eb51

4 files changed, 63 insertions, 3 deletions

diff --git a/sim/eventq.cc b/sim/eventq.cc
index 7138d8688..77eb490c7 100644
--- a/sim/eventq.cc
+++ b/sim/eventq.cc
@@ -118,6 +118,39 @@ EventQueue::serviceOne()
         delete event;
 }
 
+
+void
+Event::serialize(std::ostream &os)
+{
+    SERIALIZE_SCALAR(_when);
+    SERIALIZE_SCALAR(_priority);
+    SERIALIZE_ENUM(_flags);
+}
+
+
+void
+Event::unserialize(const IniFile *db, const string &section)
+{
+    if (scheduled())
+        deschedule();
+
+    UNSERIALIZE_SCALAR(_when);
+    UNSERIALIZE_SCALAR(_priority);
+
+    // need to see if original event was in a scheduled, unsquashed
+    // state, but don't want to restore those flags in the current
+    // object itself (since they aren't immediately true)
+    UNSERIALIZE_ENUM(_flags);
+    bool wasScheduled = (_flags & Scheduled) && !(_flags & Squashed);
+    _flags &= ~(Squashed | Scheduled);
+
+    if (wasScheduled) {
+        DPRINTF(Config, "rescheduling at %d\n", _when);
+        schedule(_when);
+    }
+}
+
+
 void
 EventQueue::nameChildren()
 {
diff --git a/sim/eventq.hh b/sim/eventq.hh
index cd86512e4..a8eae1248 100644
--- a/sim/eventq.hh
+++ b/sim/eventq.hh
@@ -112,6 +112,20 @@ class Event : public Serializeable, public FastAlloc
     {
     }
 
+    /*
+     * Event constructor
+     * @param queue that the event gets scheduled on
+     */
+    Event(EventQueue *q, std::string _name, int p = 0)
+        : Serializeable(_name), queue(q), next(NULL),
+          _priority(p), _flags(None),
+#if TRACING_ON
+          when_created(curTick), when_scheduled(0),
+#endif
+          annotated_value(0)
+    {
+    }
+
     ~Event() {}
 
     /// Determine if the current event is scheduled
@@ -174,6 +188,9 @@ class Event : public Serializeable, public FastAlloc
             return l->when() >= r->when() || l->priority() >= r->priority();
         }
     };
+
+    virtual void serialize(std::ostream &os);
+    virtual void unserialize(const IniFile *db, const std::string &section);
 };
 
 template <class T, void (T::* F)()>
diff --git a/sim/serialize.cc b/sim/serialize.cc
index 00321b932..f838acc8d 100644
--- a/sim/serialize.cc
+++ b/sim/serialize.cc
@@ -355,6 +355,10 @@ Param<string> serialize_file(&serialParams,
                              "file",
                              "file to write to", "");
 
+// Copy filename into regular string so we can export it without
+// having to include param.hh all over the place.
+string serializeFilename;
+
 SerializeParamContext::SerializeParamContext(const string &section)
     : ParamContext(section), event(NULL)
 { }
@@ -366,9 +370,10 @@ SerializeParamContext::~SerializeParamContext()
 void
 SerializeParamContext::checkParams()
 {
-    if (!((string)serialize_file).empty() && serialize_cycle > 0)
-    event = new SerializeEvent(&mainEventQueue, serialize_cycle,
-                               serialize_file);
+    serializeFilename = serialize_file;
+    if (!serializeFilename.empty() && serialize_cycle > 0)
+        event = new SerializeEvent(&mainEventQueue, serialize_cycle,
+                                   serializeFilename);
 }
 
 void
diff --git a/sim/serialize.hh b/sim/serialize.hh
index d7842b47d..4e0dbd1bd 100644
--- a/sim/serialize.hh
+++ b/sim/serialize.hh
@@ -235,5 +235,10 @@ SerializeableClass the##OBJ_CLASS##Class(CLASS_NAME,		\
                                      new##OBJ_CLASS##Builder);
 
 
+//
+// Export checkpoint filename param so other objects can derive
+// filenames from it (e.g., memory).
+//
+extern std::string serializeFilename;
 
 #endif // __SERIALIZE_HH__