cpu: o3: replace issueLatency with bool pipelined
[gem5.git] / src / cpu / simple_thread.cc
index 40f7f3cdb79148711761d0e95664fe4e47f63caa..36603a1c167cd10f908e8ef1578d916d1384f5d8 100644 (file)
 #include <string>
 
 #include "arch/isa_traits.hh"
-#include "config/the_isa.hh"
-#include "cpu/base.hh"
-#include "cpu/simple_thread.hh"
-#include "cpu/thread_context.hh"
-#include "params/BaseCPU.hh"
-
-#if FULL_SYSTEM
 #include "arch/kernel_stats.hh"
 #include "arch/stacktrace.hh"
+#include "arch/utility.hh"
 #include "base/callback.hh"
 #include "base/cprintf.hh"
 #include "base/output.hh"
 #include "base/trace.hh"
+#include "config/the_isa.hh"
+#include "cpu/base.hh"
 #include "cpu/profile.hh"
 #include "cpu/quiesce_event.hh"
+#include "cpu/simple_thread.hh"
+#include "cpu/thread_context.hh"
+#include "mem/fs_translating_port_proxy.hh"
+#include "mem/se_translating_port_proxy.hh"
+#include "params/BaseCPU.hh"
+#include "sim/faults.hh"
+#include "sim/full_system.hh"
+#include "sim/process.hh"
 #include "sim/serialize.hh"
 #include "sim/sim_exit.hh"
-#else
-#include "mem/translating_port.hh"
-#include "sim/process.hh"
 #include "sim/system.hh"
-#endif
 
 using namespace std;
 
 // constructor
-#if FULL_SYSTEM
 SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
-                           TheISA::TLB *_itb, TheISA::TLB *_dtb,
-                           bool use_kernel_stats)
-    : ThreadState(_cpu, _thread_num),
-      cpu(_cpu), system(_sys), itb(_itb), dtb(_dtb)
+                           Process *_process, TheISA::TLB *_itb,
+                           TheISA::TLB *_dtb, TheISA::ISA *_isa)
+    : ThreadState(_cpu, _thread_num, _process), isa(_isa),
+      predicate(false), system(_sys),
+      itb(_itb), dtb(_dtb)
+{
+    clearArchRegs();
+    tc = new ProxyThreadContext<SimpleThread>(this);
+}
 
+SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
+                           TheISA::TLB *_itb, TheISA::TLB *_dtb,
+                           TheISA::ISA *_isa, bool use_kernel_stats)
+    : ThreadState(_cpu, _thread_num, NULL), isa(_isa), system(_sys), itb(_itb),
+      dtb(_dtb)
 {
     tc = new ProxyThreadContext<SimpleThread>(this);
 
@@ -74,7 +83,7 @@ SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
 
     clearArchRegs();
 
-    if (cpu->params()->profile) {
+    if (baseCpu->params()->profile) {
         profile = new FunctionProfile(system->kernelSymtab);
         Callback *cb =
             new MakeCallback<SimpleThread,
@@ -91,85 +100,21 @@ SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys,
     if (use_kernel_stats)
         kernelStats = new TheISA::Kernel::Statistics(system);
 }
-#else
-SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, Process *_process,
-                           TheISA::TLB *_itb, TheISA::TLB *_dtb)
-    : ThreadState(_cpu, _thread_num, _process),
-      cpu(_cpu), itb(_itb), dtb(_dtb)
-{
-    clearArchRegs();
-    tc = new ProxyThreadContext<SimpleThread>(this);
-}
-
-#endif
-
-SimpleThread::SimpleThread()
-#if FULL_SYSTEM
-    : ThreadState(NULL, -1)
-#else
-    : ThreadState(NULL, -1, NULL)
-#endif
-{
-    tc = new ProxyThreadContext<SimpleThread>(this);
-}
 
 SimpleThread::~SimpleThread()
 {
-#if FULL_SYSTEM
-    delete physPort;
-    delete virtPort;
-#endif
     delete tc;
 }
 
 void
 SimpleThread::takeOverFrom(ThreadContext *oldContext)
 {
-    // some things should already be set up
-#if FULL_SYSTEM
-    assert(system == oldContext->getSystemPtr());
-#else
-    assert(process == oldContext->getProcessPtr());
-#endif
-
-    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
-        // the proper CPU.
-        quiesce->tc = tc;
-    }
-    if (quiesceEvent) {
-        quiesceEvent->tc = tc;
-    }
-
-    TheISA::Kernel::Statistics *stats = oldContext->getKernelStats();
-    if (stats) {
-        kernelStats = stats;
-    }
-#endif
+    ::takeOverFrom(*tc, *oldContext);
+    decoder.takeOverFrom(oldContext->getDecoderPtr());
 
+    kernelStats = oldContext->getKernelStats();
+    funcExeInst = oldContext->readFuncExeInst();
     storeCondFailures = 0;
-
-    oldContext->setStatus(ThreadContext::Halted);
-}
-
-void
-SimpleThread::copyTC(ThreadContext *context)
-{
-    copyState(context);
-
-#if FULL_SYSTEM
-    EndQuiesceEvent *quiesce = context->getQuiesceEvent();
-    if (quiesce) {
-        quiesceEvent = quiesce;
-    }
-    TheISA::Kernel::Statistics *stats = context->getKernelStats();
-    if (stats) {
-        kernelStats = stats;
-    }
-#endif
 }
 
 void
@@ -178,9 +123,8 @@ SimpleThread::copyState(ThreadContext *oldContext)
     // copy over functional state
     _status = oldContext->status();
     copyArchRegs(oldContext);
-#if !FULL_SYSTEM
-    funcExeInst = oldContext->readFuncExeInst();
-#endif
+    if (FullSystem)
+        funcExeInst = oldContext->readFuncExeInst();
 
     _threadId = oldContext->threadId();
     _contextId = oldContext->contextId();
@@ -190,19 +134,7 @@ void
 SimpleThread::serialize(ostream &os)
 {
     ThreadState::serialize(os);
-    SERIALIZE_ARRAY(floatRegs.i, TheISA::NumFloatRegs);
-    SERIALIZE_ARRAY(intRegs, TheISA::NumIntRegs);
-    SERIALIZE_SCALAR(microPC);
-    SERIALIZE_SCALAR(nextMicroPC);
-    SERIALIZE_SCALAR(PC);
-    SERIALIZE_SCALAR(nextPC);
-    SERIALIZE_SCALAR(nextNPC);
-    // thread_num and cpu_id are deterministic from the config
-
-    // 
-    // Now must serialize all the ISA dependent state
-    //
-    isa.serialize(cpu, os);
+    ::serialize(*tc, os);
 }
 
 
@@ -210,47 +142,32 @@ void
 SimpleThread::unserialize(Checkpoint *cp, const std::string &section)
 {
     ThreadState::unserialize(cp, section);
-    UNSERIALIZE_ARRAY(floatRegs.i, TheISA::NumFloatRegs);
-    UNSERIALIZE_ARRAY(intRegs, TheISA::NumIntRegs);
-    UNSERIALIZE_SCALAR(microPC);
-    UNSERIALIZE_SCALAR(nextMicroPC);
-    UNSERIALIZE_SCALAR(PC);
-    UNSERIALIZE_SCALAR(nextPC);
-    UNSERIALIZE_SCALAR(nextNPC);
-    // thread_num and cpu_id are deterministic from the config
-
-    // 
-    // Now must unserialize all the ISA dependent state
-    //
-    isa.unserialize(cpu, cp, section);
+    ::unserialize(*tc, cp, section);
+}
+
+void
+SimpleThread::startup()
+{
+    isa->startup(tc);
 }
 
-#if FULL_SYSTEM
 void
 SimpleThread::dumpFuncProfile()
 {
-    std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name()));
+    std::ostream *os = simout.create(csprintf("profile.%s.dat",
+                                              baseCpu->name()));
     profile->dump(tc, *os);
 }
-#endif
 
 void
-SimpleThread::activate(int delay)
+SimpleThread::activate()
 {
     if (status() == ThreadContext::Active)
         return;
 
-    lastActivate = curTick;
-
-//    if (status() == ThreadContext::Unallocated) {
-//      cpu->activateWhenReady(_threadId);
-//      return;
-//   }
-
+    lastActivate = curTick();
     _status = ThreadContext::Active;
-
-    // status() == Suspended
-    cpu->activateContext(_threadId, delay);
+    baseCpu->activateContext(_threadId);
 }
 
 void
@@ -259,19 +176,10 @@ SimpleThread::suspend()
     if (status() == ThreadContext::Suspended)
         return;
 
-    lastActivate = curTick;
-    lastSuspend = curTick;
-/*
-#if FULL_SYSTEM
-    // Don't change the status from active if there are pending interrupts
-    if (cpu->checkInterrupts()) {
-        assert(status() == ThreadContext::Active);
-        return;
-    }
-#endif
-*/
+    lastActivate = curTick();
+    lastSuspend = curTick();
     _status = ThreadContext::Suspended;
-    cpu->suspendContext(_threadId);
+    baseCpu->suspendContext(_threadId);
 }
 
 
@@ -282,17 +190,15 @@ SimpleThread::halt()
         return;
 
     _status = ThreadContext::Halted;
-    cpu->haltContext(_threadId);
+    baseCpu->haltContext(_threadId);
 }
 
 
 void
 SimpleThread::regStats(const string &name)
 {
-#if FULL_SYSTEM
-    if (kernelStats)
+    if (FullSystem && kernelStats)
         kernelStats->regStats(name + ".kern");
-#endif
 }
 
 void
@@ -301,3 +207,18 @@ SimpleThread::copyArchRegs(ThreadContext *src_tc)
     TheISA::copyRegs(src_tc, tc);
 }
 
+// The following methods are defined in src/arch/alpha/ev5.cc for
+// Alpha.
+#if THE_ISA != ALPHA_ISA
+Fault
+SimpleThread::hwrei()
+{
+    return NoFault;
+}
+
+bool
+SimpleThread::simPalCheck(int palFunc)
+{
+    return true;
+}
+#endif