Add quiesceNs, quiesceTime, quiesceCycles, and m5panic pseudo ops.

This changeset removes a check that prevents quiescing when an
interrupt is pending. *** You should only call quiesce if that
isn't a problem. ***

arch/alpha/isa/decoder.isa:
sim/pseudo_inst.cc:
sim/pseudo_inst.hh:
    Add quiesceNs, quiesceCycles, quisceTime and m5panic pseudo ops.
    These quiesce for a number of ns, cycles, report how long
    we were quiesced for, and panic the simulator respectively.
    The latter is added to the panic() function in the console and linux
    kernel instead of executing an infinite loop until someone notices.
cpu/exec_context.cc:
cpu/exec_context.hh:
    Add a quiesce end event to the execution contexted which upon
    executing wakes up a CPU for quiesceCycles/quiesceNs.
util/m5/Makefile:
    Make the makefile more reasonable
util/m5/m5.c:
    update the m5op executable to use the files from the linux tree
util/m5/m5op.S:
    update m5op.S from linux tree
util/m5/m5op.h:
    update m5op.h from linux tree

--HG--
rename : util/m5/m5op.s => util/m5/m5op.S
extra : convert_revision : 3be18525e811405b112e33f24a8c4e772d15462d

2 files changed, 61 insertions, 8 deletions

diff --git a/cpu/exec_context.cc b/cpu/exec_context.cc
index 9bed3ba47..4ff3e0952 100644
--- a/cpu/exec_context.cc
+++ b/cpu/exec_context.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001-2005 The Regents of The University of Michigan
+ * Copyright (c) 2001-2006 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -35,6 +35,7 @@
 #include "base/callback.hh"
 #include "base/cprintf.hh"
 #include "base/output.hh"
+#include "base/trace.hh"
 #include "cpu/profile.hh"
 #include "kern/kernel_stats.hh"
 #include "sim/serialize.hh"
@@ -53,10 +54,10 @@ ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, System *_sys,
                          AlphaITB *_itb, AlphaDTB *_dtb,
                          FunctionalMemory *_mem)
     : _status(ExecContext::Unallocated), cpu(_cpu), thread_num(_thread_num),
-      cpu_id(-1), mem(_mem), itb(_itb), dtb(_dtb), system(_sys),
-      memctrl(_sys->memctrl), physmem(_sys->physmem),
+      cpu_id(-1), lastActivate(0), lastSuspend(0), mem(_mem), itb(_itb),
+      dtb(_dtb), system(_sys), memctrl(_sys->memctrl), physmem(_sys->physmem),
       kernelBinning(system->kernelBinning), bin(kernelBinning->bin),
-      fnbin(kernelBinning->fnbin), profile(NULL),
+      fnbin(kernelBinning->fnbin), profile(NULL), quiesceEvent(this),
       func_exe_inst(0), storeCondFailures(0)
 {
     kernelStats = new Kernel::Statistics(this);
@@ -79,8 +80,8 @@ ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, System *_sys,
 ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
                          Process *_process, int _asid)
     : _status(ExecContext::Unallocated),
-      cpu(_cpu), thread_num(_thread_num), cpu_id(-1),
-      process(_process), mem(process->getMemory()), asid(_asid),
+      cpu(_cpu), thread_num(_thread_num), cpu_id(-1), lastActivate(0),
+      lastSuspend(0), process(_process), mem(process->getMemory()), asid(_asid),
       func_exe_inst(0), storeCondFailures(0)
 {
     memset(&regs, 0, sizeof(RegFile));
@@ -109,6 +110,23 @@ ExecContext::dumpFuncProfile()
     std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name()));
     profile->dump(this, *os);
 }
+
+ExecContext::EndQuiesceEvent::EndQuiesceEvent(ExecContext *_xc)
+    : Event(&mainEventQueue), xc(_xc)
+{
+}
+
+void
+ExecContext::EndQuiesceEvent::process()
+{
+    xc->activate();
+}
+
+const char*
+ExecContext::EndQuiesceEvent::description()
+{
+    return "End Quiesce Event.";
+}
 #endif
 
 void
@@ -143,7 +161,12 @@ ExecContext::serialize(ostream &os)
     SERIALIZE_SCALAR(inst);
 
 #if FULL_SYSTEM
+    Tick quiesceEndTick = 0;
+    if (quiesceEvent.scheduled())
+        quiesceEndTick = quiesceEvent.when();
+    SERIALIZE_SCALAR(quiesceEndTick);
     kernelStats->serialize(os);
+
 #endif
 }
 
@@ -158,6 +181,11 @@ ExecContext::unserialize(Checkpoint *cp, const std::string &section)
     UNSERIALIZE_SCALAR(inst);
 
 #if FULL_SYSTEM
+    Tick quiesceEndTick;
+    UNSERIALIZE_SCALAR(quiesceEndTick);
+    if (quiesceEndTick)
+        quiesceEvent.schedule(quiesceEndTick);
+
     kernelStats->unserialize(cp, section);
 #endif
 }
@@ -169,6 +197,8 @@ ExecContext::activate(int delay)
     if (status() == Active)
         return;
 
+    lastActivate = curTick;
+
     _status = Active;
     cpu->activateContext(thread_num, delay);
 }
@@ -179,6 +209,9 @@ ExecContext::suspend()
     if (status() == Suspended)
         return;
 
+    lastActivate = curTick;
+    lastSuspend = curTick;
+/*
 #if FULL_SYSTEM
     // Don't change the status from active if there are pending interrupts
     if (cpu->check_interrupts()) {
@@ -186,7 +219,7 @@ ExecContext::suspend()
         return;
     }
 #endif
-
+*/
     _status = Suspended;
     cpu->suspendContext(thread_num);
 }
diff --git a/cpu/exec_context.hh b/cpu/exec_context.hh
index 3e0d77254..ce7fe3467 100644
--- a/cpu/exec_context.hh
+++ b/cpu/exec_context.hh
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001-2005 The Regents of The University of Michigan
+ * Copyright (c) 2001-2006 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -32,6 +32,7 @@
 #include "config/full_system.hh"
 #include "mem/functional/functional.hh"
 #include "mem/mem_req.hh"
+#include "sim/eventq.hh"
 #include "sim/host.hh"
 #include "sim/serialize.hh"
 #include "arch/isa_traits.hh"
@@ -131,6 +132,9 @@ class ExecContext
     // it belongs.  For full-system mode, this is the system CPU ID.
     int cpu_id;
 
+    Tick lastActivate;
+    Tick lastSuspend;
+
 #if FULL_SYSTEM
     FunctionalMemory *mem;
     AlphaITB *itb;
@@ -153,6 +157,22 @@ class ExecContext
     Addr profilePC;
     void dumpFuncProfile();
 
+    /** Event for timing out quiesce instruction */
+    struct EndQuiesceEvent : public Event
+    {
+        /** A pointer to the execution context that is quiesced */
+        ExecContext *xc;
+
+        EndQuiesceEvent(ExecContext *_xc);
+
+        /** Event process to occur at interrupt*/
+        virtual void process();
+
+        /** Event description */
+        virtual const char *description();
+    };
+    EndQuiesceEvent quiesceEvent;
+
 #else
     Process *process;