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-rw-r--r--src/cpu/cpu_exec_context.cc320
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diff --git a/src/cpu/cpu_exec_context.cc b/src/cpu/cpu_exec_context.cc
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+/*
+ * 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
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <string>
+
+#include "arch/isa_traits.hh"
+#include "cpu/base.hh"
+#include "cpu/cpu_exec_context.hh"
+#include "cpu/exec_context.hh"
+
+#if FULL_SYSTEM
+#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"
+#include "sim/sim_exit.hh"
+#include "arch/stacktrace.hh"
+#else
+#include "sim/process.hh"
+#include "sim/system.hh"
+#include "mem/translating_port.hh"
+#endif
+
+using namespace std;
+
+// constructor
+#if FULL_SYSTEM
+CPUExecContext::CPUExecContext(BaseCPU *_cpu, int _thread_num, System *_sys,
+ AlphaITB *_itb, AlphaDTB *_dtb)
+ : _status(ExecContext::Unallocated), cpu(_cpu), thread_num(_thread_num),
+ cpu_id(-1), lastActivate(0), lastSuspend(0), system(_sys), itb(_itb),
+ dtb(_dtb), profile(NULL), quiesceEvent(this), func_exe_inst(0),
+ storeCondFailures(0)
+
+{
+ proxy = new ProxyExecContext<CPUExecContext>(this);
+
+ regs.clear();
+
+ if (cpu->params->profile) {
+ profile = new FunctionProfile(system->kernelSymtab);
+ Callback *cb =
+ new MakeCallback<CPUExecContext,
+ &CPUExecContext::dumpFuncProfile>(this);
+ registerExitCallback(cb);
+ }
+
+ // let's fill with a dummy node for now so we don't get a segfault
+ // on the first cycle when there's no node available.
+ static ProfileNode dummyNode;
+ profileNode = &dummyNode;
+ profilePC = 3;
+
+ Port *mem_port;
+ physPort = new FunctionalPort();
+ mem_port = system->physmem->getPort("functional");
+ mem_port->setPeer(physPort);
+ physPort->setPeer(mem_port);
+
+ virtPort = new VirtualPort();
+ mem_port = system->physmem->getPort("functional");
+ mem_port->setPeer(virtPort);
+ virtPort->setPeer(mem_port);
+}
+#else
+CPUExecContext::CPUExecContext(BaseCPU *_cpu, int _thread_num,
+ Process *_process, int _asid, MemObject* memobj)
+ : _status(ExecContext::Unallocated),
+ cpu(_cpu), thread_num(_thread_num), cpu_id(-1), lastActivate(0),
+ lastSuspend(0), process(_process), asid(_asid),
+ func_exe_inst(0), storeCondFailures(0)
+{
+ /* Use this port to for syscall emulation writes to memory. */
+ Port *mem_port;
+ port = new TranslatingPort(process->pTable, false);
+ mem_port = memobj->getPort("functional");
+ mem_port->setPeer(port);
+ port->setPeer(mem_port);
+
+ regs.clear();
+ proxy = new ProxyExecContext<CPUExecContext>(this);
+}
+
+CPUExecContext::CPUExecContext(RegFile *regFile)
+ : cpu(NULL), thread_num(-1), process(NULL), asid(-1),
+ func_exe_inst(0), storeCondFailures(0)
+{
+ regs = *regFile;
+ proxy = new ProxyExecContext<CPUExecContext>(this);
+}
+
+#endif
+
+CPUExecContext::~CPUExecContext()
+{
+ delete proxy;
+}
+
+#if FULL_SYSTEM
+void
+CPUExecContext::dumpFuncProfile()
+{
+ std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name()));
+ profile->dump(proxy, *os);
+}
+
+CPUExecContext::EndQuiesceEvent::EndQuiesceEvent(CPUExecContext *_cpuXC)
+ : Event(&mainEventQueue), cpuXC(_cpuXC)
+{
+}
+
+void
+CPUExecContext::EndQuiesceEvent::process()
+{
+ cpuXC->activate();
+}
+
+const char*
+CPUExecContext::EndQuiesceEvent::description()
+{
+ return "End Quiesce Event.";
+}
+
+void
+CPUExecContext::profileClear()
+{
+ if (profile)
+ profile->clear();
+}
+
+void
+CPUExecContext::profileSample()
+{
+ if (profile)
+ profile->sample(profileNode, profilePC);
+}
+
+#endif
+
+void
+CPUExecContext::takeOverFrom(ExecContext *oldContext)
+{
+ // some things should already be set up
+#if FULL_SYSTEM
+ assert(system == oldContext->getSystemPtr());
+#else
+ assert(process == oldContext->getProcessPtr());
+#endif
+
+ // copy over functional state
+ _status = oldContext->status();
+ copyArchRegs(oldContext);
+ cpu_id = oldContext->readCpuId();
+#if !FULL_SYSTEM
+ func_exe_inst = oldContext->readFuncExeInst();
+#endif
+
+ storeCondFailures = 0;
+
+ oldContext->setStatus(ExecContext::Unallocated);
+}
+
+void
+CPUExecContext::serialize(ostream &os)
+{
+ SERIALIZE_ENUM(_status);
+ regs.serialize(os);
+ // thread_num and cpu_id are deterministic from the config
+ SERIALIZE_SCALAR(func_exe_inst);
+ SERIALIZE_SCALAR(inst);
+
+#if FULL_SYSTEM
+ Tick quiesceEndTick = 0;
+ if (quiesceEvent.scheduled())
+ quiesceEndTick = quiesceEvent.when();
+ SERIALIZE_SCALAR(quiesceEndTick);
+
+#endif
+}
+
+
+void
+CPUExecContext::unserialize(Checkpoint *cp, const std::string &section)
+{
+ UNSERIALIZE_ENUM(_status);
+ regs.unserialize(cp, section);
+ // thread_num and cpu_id are deterministic from the config
+ UNSERIALIZE_SCALAR(func_exe_inst);
+ UNSERIALIZE_SCALAR(inst);
+
+#if FULL_SYSTEM
+ Tick quiesceEndTick;
+ UNSERIALIZE_SCALAR(quiesceEndTick);
+ if (quiesceEndTick)
+ quiesceEvent.schedule(quiesceEndTick);
+#endif
+}
+
+
+void
+CPUExecContext::activate(int delay)
+{
+ if (status() == ExecContext::Active)
+ return;
+
+ lastActivate = curTick;
+
+ _status = ExecContext::Active;
+ cpu->activateContext(thread_num, delay);
+}
+
+void
+CPUExecContext::suspend()
+{
+ if (status() == ExecContext::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()) {
+ assert(status() == ExecContext::Active);
+ return;
+ }
+#endif
+*/
+ _status = ExecContext::Suspended;
+ cpu->suspendContext(thread_num);
+}
+
+void
+CPUExecContext::deallocate()
+{
+ if (status() == ExecContext::Unallocated)
+ return;
+
+ _status = ExecContext::Unallocated;
+ cpu->deallocateContext(thread_num);
+}
+
+void
+CPUExecContext::halt()
+{
+ if (status() == ExecContext::Halted)
+ return;
+
+ _status = ExecContext::Halted;
+ cpu->haltContext(thread_num);
+}
+
+
+void
+CPUExecContext::regStats(const string &name)
+{
+}
+
+void
+CPUExecContext::copyArchRegs(ExecContext *xc)
+{
+ TheISA::copyRegs(xc, proxy);
+}
+
+#if FULL_SYSTEM
+VirtualPort*
+CPUExecContext::getVirtPort(ExecContext *xc)
+{
+ if (!xc)
+ return virtPort;
+
+ VirtualPort *vp;
+ Port *mem_port;
+
+ vp = new VirtualPort(xc);
+ mem_port = system->physmem->getPort("functional");
+ mem_port->setPeer(vp);
+ vp->setPeer(mem_port);
+ return vp;
+}
+
+void
+CPUExecContext::delVirtPort(VirtualPort *vp)
+{
+// assert(!vp->nullExecContext());
+ delete vp->getPeer();
+ delete vp;
+}
+
+
+#endif
+
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