Various serialization changes to make it possible for the O3CPU to checkpoint.

src/arch/alpha/regfile.hh:
    Define serialize/unserialize functions on MiscRegFile itself.
src/cpu/o3/regfile.hh:
    Remove old commented code.
src/cpu/simple_thread.cc:
src/cpu/simple_thread.hh:
    Push common serialization code to ThreadState level.  Also allow the SimpleThread to be used for checkpointing by other models.
src/cpu/thread_state.cc:
src/cpu/thread_state.hh:
    Move common serialization code into ThreadState.

--HG--
extra : convert_revision : ef64ef515355437439af967eda2e610e8c1b658b

src/cpu/thread_state.cc

@@ -31,6 +31,12 @@
 #include "base/output.hh"
 #include "cpu/profile.hh"
 #include "cpu/thread_state.hh"
+#include "sim/serialize.hh"
+
+#if FULL_SYSTEM
+#include "cpu/quiesce_event.hh"
+#include "kern/kernel_stats.hh"
+#endif
 
 #if FULL_SYSTEM
 ThreadState::ThreadState(int _cpuId, int _tid)
@@ -49,6 +55,43 @@ ThreadState::ThreadState(int _cpuId, int _tid, Process *_process,
     numLoad = 0;
 }
 
+void
+ThreadState::serialize(std::ostream &os)
+{
+    SERIALIZE_ENUM(_status);
+    // thread_num and cpu_id are deterministic from the config
+    SERIALIZE_SCALAR(funcExeInst);
+    SERIALIZE_SCALAR(inst);
+
+#if FULL_SYSTEM
+    Tick quiesceEndTick = 0;
+    if (quiesceEvent->scheduled())
+        quiesceEndTick = quiesceEvent->when();
+    SERIALIZE_SCALAR(quiesceEndTick);
+    if (kernelStats)
+        kernelStats->serialize(os);
+#endif
+}
+
+void
+ThreadState::unserialize(Checkpoint *cp, const std::string &section)
+{
+
+    UNSERIALIZE_ENUM(_status);
+    // thread_num and cpu_id are deterministic from the config
+    UNSERIALIZE_SCALAR(funcExeInst);
+    UNSERIALIZE_SCALAR(inst);
+
+#if FULL_SYSTEM
+    Tick quiesceEndTick;
+    UNSERIALIZE_SCALAR(quiesceEndTick);
+    if (quiesceEndTick)
+        quiesceEvent->schedule(quiesceEndTick);
+    if (kernelStats)
+        kernelStats->unserialize(cp, section);
+#endif
+}
+
 #if FULL_SYSTEM
 
 void