Support serializing and unserializing in the O3 CPU. Also a few small fixes for draining/switching CPUs.

src/cpu/o3/commit_impl.hh:
    Fix to clear drainPending variable on call to resume.
src/cpu/o3/cpu.cc:
src/cpu/o3/cpu.hh:
    Support serializing and unserializing in the O3 CPU.
src/cpu/o3/lsq_impl.hh:
    Be sure to say we have no stores to write back if the active thread list is empty.
src/cpu/simple_thread.cc:
src/cpu/simple_thread.hh:
    Slightly change how SimpleThread is used to copy from other ThreadContexts.

--HG--
extra : convert_revision : 92a5109b3783a989d5b451036061ef82c56d3121

1 files changed, 18 insertions, 14 deletions

diff --git a/src/cpu/simple_thread.cc b/src/cpu/simple_thread.cc
index 6255b3357..af1db2ff2 100644
--- a/src/cpu/simple_thread.cc
+++ b/src/cpu/simple_thread.cc
@@ -125,7 +125,7 @@ SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num,
 
 #endif
 
-SimpleThread::SimpleThread(ThreadContext *oldContext)
+SimpleThread::SimpleThread()
 #if FULL_SYSTEM
     : ThreadState(-1, -1)
 #else
@@ -134,19 +134,6 @@ SimpleThread::SimpleThread(ThreadContext *oldContext)
 {
     tc = new ProxyThreadContext<SimpleThread>(this);
     regs.clear();
-
-    copyState(oldContext);
-
-#if FULL_SYSTEM
-    EndQuiesceEvent *quiesce = oldContext->getQuiesceEvent();
-    if (quiesce) {
-        quiesceEvent = quiesce;
-    }
-    Kernel::Statistics *stats = oldContext->getKernelStats();
-    if (stats) {
-        kernelStats = stats;
-    }
-#endif
 }
 
 SimpleThread::~SimpleThread()
@@ -183,6 +170,23 @@ SimpleThread::takeOverFrom(ThreadContext *oldContext)
 }
 
 void
+SimpleThread::copyTC(ThreadContext *context)
+{
+    copyState(context);
+
+#if FULL_SYSTEM
+    EndQuiesceEvent *quiesce = context->getQuiesceEvent();
+    if (quiesce) {
+        quiesceEvent = quiesce;
+    }
+    Kernel::Statistics *stats = context->getKernelStats();
+    if (stats) {
+        kernelStats = stats;
+    }
+#endif
+}
+
+void
 SimpleThread::copyState(ThreadContext *oldContext)
 {
     // copy over functional state