A possible implementation of a multiplexed bus.

[gem5.git] / src / cpu / simple_thread.cc

diff --git a/src/cpu/simple_thread.cc b/src/cpu/simple_thread.cc
index 48383ca9308dd68922ecf6006227f04e9b6eda75..4fc47c982115651287ec15575835ef00b9769569 100644 (file)
--- a/src/cpu/simple_thread.cc
+++ b/src/cpu/simple_thread.cc
@@ -107,7 +107,7 @@ SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
 #else
 SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num,
                          Process *_process, int _asid, MemObject* memobj)
-    : ThreadState(-1, _thread_num, memobj, _process, _asid),
+    : ThreadState(-1, _thread_num, _process, _asid, memobj),
       cpu(_cpu)
 {
     /* Use this port to for syscall emulation writes to memory. */
@@ -123,15 +123,19 @@ SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num,
     tc = new ProxyThreadContext<SimpleThread>(this);
 }
 
-SimpleThread::SimpleThread(RegFile *regFile)
-    : ThreadState(-1, -1, NULL, NULL, -1), cpu(NULL)
+#endif
+
+SimpleThread::SimpleThread()
+#if FULL_SYSTEM
+    : ThreadState(-1, -1)
+#else
+    : ThreadState(-1, -1, NULL, -1, NULL)
+#endif
 {
-    regs = *regFile;
     tc = new ProxyThreadContext<SimpleThread>(this);
+    regs.clear();
 }
 
-#endif
-
 SimpleThread::~SimpleThread()
 {
     delete tc;
@@ -147,13 +151,8 @@ SimpleThread::takeOverFrom(ThreadContext *oldContext)
     assert(process == oldContext->getProcessPtr());
 #endif
 
-    // copy over functional state
-    _status = oldContext->status();
-    copyArchRegs(oldContext);
-    cpuId = oldContext->readCpuId();
-#if !FULL_SYSTEM
-    funcExeInst = oldContext->readFuncExeInst();
-#else
+    copyState(oldContext);
+#if FULL_SYSTEM
     EndQuiesceEvent *quiesce = oldContext->getQuiesceEvent();
     if (quiesce) {
         // Point the quiesce event's TC at this TC so that it wakes up
@@ -163,6 +162,11 @@ SimpleThread::takeOverFrom(ThreadContext *oldContext)
     if (quiesceEvent) {
         quiesceEvent->tc = tc;
     }
+
+    Kernel::Statistics *stats = oldContext->getKernelStats();
+    if (stats) {
+        kernelStats = stats;
+    }
 #endif
 
     storeCondFailures = 0;
@@ -171,42 +175,50 @@ SimpleThread::takeOverFrom(ThreadContext *oldContext)
 }
 
 void
-SimpleThread::serialize(ostream &os)
+SimpleThread::copyTC(ThreadContext *context)
 {
-    SERIALIZE_ENUM(_status);
-    regs.serialize(os);
-    // thread_num and cpu_id are deterministic from the config
-    SERIALIZE_SCALAR(funcExeInst);
-    SERIALIZE_SCALAR(inst);
+    copyState(context);
 
 #if FULL_SYSTEM
-    Tick quiesceEndTick = 0;
-    if (quiesceEvent->scheduled())
-        quiesceEndTick = quiesceEvent->when();
-    SERIALIZE_SCALAR(quiesceEndTick);
-    if (kernelStats)
-        kernelStats->serialize(os);
+    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
+    _status = oldContext->status();
+    copyArchRegs(oldContext);
+    cpuId = oldContext->readCpuId();
+#if !FULL_SYSTEM
+    funcExeInst = oldContext->readFuncExeInst();
+#endif
+    inst = oldContext->getInst();
+}
+
+void
+SimpleThread::serialize(ostream &os)
+{
+    ThreadState::serialize(os);
+    regs.serialize(os);
+    // thread_num and cpu_id are deterministic from the config
+}
+
 
 void
 SimpleThread::unserialize(Checkpoint *cp, const std::string &section)
 {
-    UNSERIALIZE_ENUM(_status);
+    ThreadState::unserialize(cp, section);
     regs.unserialize(cp, section);
     // 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