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Diffstat (limited to 'src/cpu/ozone/cpu_impl.hh')
-rw-r--r--src/cpu/ozone/cpu_impl.hh120
1 files changed, 88 insertions, 32 deletions
diff --git a/src/cpu/ozone/cpu_impl.hh b/src/cpu/ozone/cpu_impl.hh
index 80f18434c..bf547bf94 100644
--- a/src/cpu/ozone/cpu_impl.hh
+++ b/src/cpu/ozone/cpu_impl.hh
@@ -35,6 +35,7 @@
#include "arch/isa_traits.hh" // For MachInst
#include "base/trace.hh"
#include "cpu/base.hh"
+#include "cpu/simple_thread.hh"
#include "cpu/thread_context.hh"
#include "cpu/exetrace.hh"
#include "cpu/ozone/cpu.hh"
@@ -50,9 +51,9 @@
#include "arch/alpha/types.hh"
#include "arch/vtophys.hh"
#include "base/callback.hh"
-//#include "base/remote_gdb.hh"
#include "cpu/profile.hh"
#include "kern/kernel_stats.hh"
+#include "mem/physical.hh"
#include "sim/faults.hh"
#include "sim/sim_events.hh"
#include "sim/sim_exit.hh"
@@ -68,15 +69,6 @@
using namespace TheISA;
template <class Impl>
-template<typename T>
-void
-OzoneCPU<Impl>::trace_data(T data) {
- if (traceData) {
- traceData->setData(data);
- }
-}
-
-template <class Impl>
OzoneCPU<Impl>::TickEvent::TickEvent(OzoneCPU *c, int w)
: Event(&mainEventQueue, CPU_Tick_Pri), cpu(c), width(w)
{
@@ -126,6 +118,8 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)
panic("Checker enabled but not compiled in!");
#endif
} else {
+ // If checker is not being used, then the xcProxy points
+ // directly to the CPU's ExecContext.
checker = NULL;
thread.tc = &ozoneTC;
tc = &ozoneTC;
@@ -138,7 +132,7 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)
thread.setStatus(ThreadContext::Suspended);
#if FULL_SYSTEM
- /***** All thread state stuff *****/
+ // Setup thread state stuff.
thread.cpu = this;
thread.setTid(0);
@@ -187,12 +181,15 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)
frontEnd->setBackEnd(backEnd);
backEnd->setFrontEnd(frontEnd);
- decoupledFrontEnd = p->decoupledFrontEnd;
-
globalSeqNum = 1;
+#if FULL_SYSTEM
checkInterrupts = false;
+#endif
+ lockFlag = 0;
+
+ // Setup rename table, initializing all values to ready.
for (int i = 0; i < TheISA::TotalNumRegs; ++i) {
thread.renameTable[i] = new DynInst(this);
thread.renameTable[i]->setResultReady();
@@ -233,8 +230,6 @@ OzoneCPU<Impl>::OzoneCPU(Params *p)
thread.setVirtPort(virt_port);
#endif
- lockFlag = 0;
-
DPRINTF(OzoneCPU, "OzoneCPU: Created Ozone cpu object.\n");
}
@@ -247,6 +242,7 @@ template <class Impl>
void
OzoneCPU<Impl>::switchOut()
{
+ BaseCPU::switchOut();
switchCount = 0;
// Front end needs state from back end, so switch out the back end first.
backEnd->switchOut();
@@ -257,6 +253,8 @@ template <class Impl>
void
OzoneCPU<Impl>::signalSwitched()
{
+ // Only complete the switchout when both the front end and back
+ // end have signalled they are ready to switch.
if (++switchCount == 2) {
backEnd->doSwitchOut();
frontEnd->doSwitchOut();
@@ -266,6 +264,17 @@ OzoneCPU<Impl>::signalSwitched()
#endif
_status = SwitchedOut;
+#ifndef NDEBUG
+ // Loop through all registers
+ for (int i = 0; i < AlphaISA::TotalNumRegs; ++i) {
+ assert(thread.renameTable[i] == frontEnd->renameTable[i]);
+
+ assert(thread.renameTable[i] == backEnd->renameTable[i]);
+
+ DPRINTF(OzoneCPU, "Checking if register %i matches.\n", i);
+ }
+#endif
+
if (tickEvent.scheduled())
tickEvent.squash();
}
@@ -278,13 +287,25 @@ OzoneCPU<Impl>::takeOverFrom(BaseCPU *oldCPU)
{
BaseCPU::takeOverFrom(oldCPU);
+ thread.trapPending = false;
+ thread.inSyscall = false;
+
backEnd->takeOverFrom();
frontEnd->takeOverFrom();
+ frontEnd->renameTable.copyFrom(thread.renameTable);
+ backEnd->renameTable.copyFrom(thread.renameTable);
assert(!tickEvent.scheduled());
+#ifndef NDEBUG
+ // Check rename table.
+ for (int i = 0; i < TheISA::TotalNumRegs; ++i) {
+ assert(thread.renameTable[i]->isResultReady());
+ }
+#endif
+
// @todo: Fix hardcoded number
// Clear out any old information in time buffer.
- for (int i = 0; i < 6; ++i) {
+ for (int i = 0; i < 15; ++i) {
comm.advance();
}
@@ -316,6 +337,10 @@ OzoneCPU<Impl>::activateContext(int thread_num, int delay)
notIdleFraction++;
scheduleTickEvent(delay);
_status = Running;
+#if FULL_SYSTEM
+ if (thread.quiesceEvent && thread.quiesceEvent->scheduled())
+ thread.quiesceEvent->deschedule();
+#endif
thread.setStatus(ThreadContext::Active);
frontEnd->wakeFromQuiesce();
}
@@ -393,7 +418,7 @@ template <class Impl>
void
OzoneCPU<Impl>::resetStats()
{
- startNumInst = numInst;
+// startNumInst = numInst;
notIdleFraction = (_status != Idle);
}
@@ -441,6 +466,15 @@ OzoneCPU<Impl>::serialize(std::ostream &os)
ozoneTC.serialize(os);
nameOut(os, csprintf("%s.tickEvent", name()));
tickEvent.serialize(os);
+
+ // Use SimpleThread's ability to checkpoint to make it easier to
+ // write out the registers. Also make this static so it doesn't
+ // get instantiated multiple times (causes a panic in statistics).
+ static SimpleThread temp;
+
+ nameOut(os, csprintf("%s.xc.0", name()));
+ temp.copyTC(thread.getTC());
+ temp.serialize(os);
}
template <class Impl>
@@ -451,6 +485,15 @@ OzoneCPU<Impl>::unserialize(Checkpoint *cp, const std::string &section)
UNSERIALIZE_ENUM(_status);
ozoneTC.unserialize(cp, csprintf("%s.tc", section));
tickEvent.unserialize(cp, csprintf("%s.tickEvent", section));
+
+ // Use SimpleThread's ability to checkpoint to make it easier to
+ // read in the registers. Also make this static so it doesn't
+ // get instantiated multiple times (causes a panic in statistics).
+ static SimpleThread temp;
+
+ temp.copyTC(thread.getTC());
+ temp.unserialize(cp, csprintf("%s.xc.0", section));
+ thread.getTC()->copyArchRegs(temp.getTC());
}
template <class Impl>
@@ -705,11 +748,13 @@ OzoneCPU<Impl>::processInterrupts()
if (ipl && ipl > thread.readMiscReg(IPR_IPLR)) {
thread.setMiscReg(IPR_ISR, summary);
thread.setMiscReg(IPR_INTID, ipl);
+#if USE_CHECKER
// @todo: Make this more transparent
if (checker) {
checker->threadBase()->setMiscReg(IPR_ISR, summary);
checker->threadBase()->setMiscReg(IPR_INTID, ipl);
}
+#endif
Fault fault = new InterruptFault;
fault->invoke(thread.getTC());
DPRINTF(Flow, "Interrupt! IPLR=%d ipl=%d summary=%x\n",
@@ -810,7 +855,9 @@ OzoneCPU<Impl>::OzoneTC::halt()
template <class Impl>
void
OzoneCPU<Impl>::OzoneTC::dumpFuncProfile()
-{ }
+{
+ thread->dumpFuncProfile();
+}
#endif
template <class Impl>
@@ -829,6 +876,7 @@ OzoneCPU<Impl>::OzoneTC::takeOverFrom(ThreadContext *old_context)
copyArchRegs(old_context);
setCpuId(old_context->readCpuId());
+ thread->setInst(old_context->getInst());
#if !FULL_SYSTEM
setFuncExeInst(old_context->readFuncExeInst());
#else
@@ -842,6 +890,7 @@ OzoneCPU<Impl>::OzoneTC::takeOverFrom(ThreadContext *old_context)
thread->quiesceEvent->tc = this;
}
+ // Copy kernel stats pointer from old context.
thread->kernelStats = old_context->getKernelStats();
// storeCondFailures = 0;
cpu->lockFlag = false;
@@ -863,7 +912,11 @@ OzoneCPU<Impl>::OzoneTC::regStats(const std::string &name)
template <class Impl>
void
OzoneCPU<Impl>::OzoneTC::serialize(std::ostream &os)
-{ }
+{
+ // Once serialization is added, serialize the quiesce event and
+ // kernel stats. Will need to make sure there aren't multiple
+ // things that serialize them.
+}
template <class Impl>
void
@@ -896,16 +949,14 @@ template <class Impl>
void
OzoneCPU<Impl>::OzoneTC::profileClear()
{
- if (thread->profile)
- thread->profile->clear();
+ thread->profileClear();
}
template <class Impl>
void
OzoneCPU<Impl>::OzoneTC::profileSample()
{
- if (thread->profile)
- thread->profile->sample(thread->profileNode, thread->profilePC);
+ thread->profileSample();
}
#endif
@@ -916,7 +967,6 @@ OzoneCPU<Impl>::OzoneTC::getThreadNum()
return thread->readTid();
}
-// Also somewhat obnoxious. Really only used for the TLB fault.
template <class Impl>
TheISA::MachInst
OzoneCPU<Impl>::OzoneTC::getInst()
@@ -934,14 +984,20 @@ OzoneCPU<Impl>::OzoneTC::copyArchRegs(ThreadContext *tc)
cpu->frontEnd->setPC(thread->PC);
cpu->frontEnd->setNextPC(thread->nextPC);
- for (int i = 0; i < TheISA::TotalNumRegs; ++i) {
- if (i < TheISA::FP_Base_DepTag) {
- thread->renameTable[i]->setIntResult(tc->readIntReg(i));
- } else if (i < (TheISA::FP_Base_DepTag + TheISA::NumFloatRegs)) {
- int fp_idx = i - TheISA::FP_Base_DepTag;
- thread->renameTable[i]->setDoubleResult(
- tc->readFloatReg(fp_idx, 64));
- }
+ // First loop through the integer registers.
+ for (int i = 0; i < TheISA::NumIntRegs; ++i) {
+/* DPRINTF(OzoneCPU, "Copying over register %i, had data %lli, "
+ "now has data %lli.\n",
+ i, thread->renameTable[i]->readIntResult(),
+ tc->readIntReg(i));
+*/
+ thread->renameTable[i]->setIntResult(tc->readIntReg(i));
+ }
+
+ // Then loop through the floating point registers.
+ for (int i = 0; i < TheISA::NumFloatRegs; ++i) {
+ int fp_idx = i + TheISA::FP_Base_DepTag;
+ thread->renameTable[fp_idx]->setIntResult(tc->readFloatRegBits(i));
}
#if !FULL_SYSTEM
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-20 18:31:51 +0000