arch: Move the ISA object to a separate section

After making the ISA an independent SimObject, it is serialized
automatically by the Python world. Previously, this just resulted in
an empty ISA section. This patch moves the contents of the ISA to that
section and removes the explicit ISA serialization from the thread
contexts, which makes it behave like a normal SimObject during
serialization.

Note: This patch breaks checkpoint backwards compatibility! Use the
cpt_upgrader.py utility to upgrade old checkpoints to the new format.

2 files changed, 7 insertions, 8 deletions

diff --git a/src/arch/sparc/isa.cc b/src/arch/sparc/isa.cc
index 0c7e83e8e..4daf8775b 100644
--- a/src/arch/sparc/isa.cc
+++ b/src/arch/sparc/isa.cc
@@ -638,7 +638,7 @@ ISA::setMiscReg(int miscReg, MiscReg val, ThreadContext * tc)
 }
 
 void
-ISA::serialize(EventManager *em, std::ostream &os)
+ISA::serialize(std::ostream &os)
 {
     SERIALIZE_SCALAR(asi);
     SERIALIZE_SCALAR(tick);
@@ -714,7 +714,7 @@ ISA::serialize(EventManager *em, std::ostream &os)
 }
 
 void
-ISA::unserialize(EventManager *em, Checkpoint *cp, const std::string &section)
+ISA::unserialize(Checkpoint *cp, const std::string &section)
 {
     UNSERIALIZE_SCALAR(asi);
     UNSERIALIZE_SCALAR(tick);
@@ -781,15 +781,15 @@ ISA::unserialize(EventManager *em, Checkpoint *cp, const std::string &section)
 
             if (tick_cmp) {
                 tickCompare = new TickCompareEvent(this, tc);
-                em->schedule(tickCompare, tick_cmp);
+                schedule(tickCompare, tick_cmp);
             }
             if (stick_cmp)  {
                 sTickCompare = new STickCompareEvent(this, tc);
-                em->schedule(sTickCompare, stick_cmp);
+                schedule(sTickCompare, stick_cmp);
             }
             if (hstick_cmp)  {
                 hSTickCompare = new HSTickCompareEvent(this, tc);
-                em->schedule(hSTickCompare, hstick_cmp);
+                schedule(hSTickCompare, hstick_cmp);
             }
         }
     }
diff --git a/src/arch/sparc/isa.hh b/src/arch/sparc/isa.hh
index 654cb3507..3dd9f6109 100644
--- a/src/arch/sparc/isa.hh
+++ b/src/arch/sparc/isa.hh
@@ -167,10 +167,9 @@ class ISA : public SimObject
 
     void clear();
 
-    void serialize(EventManager *em, std::ostream & os);
+    void serialize(std::ostream & os);
 
-    void unserialize(EventManager *em, Checkpoint *cp,
-                     const std::string & section);
+    void unserialize(Checkpoint *cp, const std::string & section);
 
   protected: