Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

simulators/gem5/src/cpu/thread_state.hh

@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 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.
+ *
+ * Authors: Kevin Lim
+ */
+
+#ifndef __CPU_THREAD_STATE_HH__
+#define __CPU_THREAD_STATE_HH__
+
+#include "arch/types.hh"
+#include "config/the_isa.hh"
+#include "cpu/base.hh"
+#include "cpu/profile.hh"
+#include "cpu/thread_context.hh"
+#include "mem/mem_object.hh"
+#include "sim/process.hh"
+
+class EndQuiesceEvent;
+class FunctionProfile;
+class ProfileNode;
+namespace TheISA {
+    namespace Kernel {
+        class Statistics;
+    }
+}
+
+class Checkpoint;
+
+/**
+ *  Struct for holding general thread state that is needed across CPU
+ *  models.  This includes things such as pointers to the process,
+ *  memory, quiesce events, and certain stats.  This can be expanded
+ *  to hold more thread-specific stats within it.
+ */
+struct ThreadState {
+    typedef ThreadContext::Status Status;
+
+    ThreadState(BaseCPU *cpu, ThreadID _tid, Process *_process);
+
+    virtual ~ThreadState();
+
+    void serialize(std::ostream &os);
+
+    void unserialize(Checkpoint *cp, const std::string &section);
+
+    int cpuId() { return baseCpu->cpuId(); }
+
+    int contextId() { return _contextId; }
+
+    void setContextId(int id) { _contextId = id; }
+
+    void setThreadId(ThreadID id) { _threadId = id; }
+
+    ThreadID threadId() { return _threadId; }
+
+    Tick readLastActivate() { return lastActivate; }
+
+    Tick readLastSuspend() { return lastSuspend; }
+
+    /**
+     * Initialise the physical and virtual port proxies and tie them to
+     * the data port of the CPU.
+     *
+     * @param tc ThreadContext for the virtual-to-physical translation
+     */
+    void initMemProxies(ThreadContext *tc);
+
+    void dumpFuncProfile();
+
+    EndQuiesceEvent *getQuiesceEvent() { return quiesceEvent; }
+
+    void profileClear();
+
+    void profileSample();
+
+    TheISA::Kernel::Statistics *getKernelStats() { return kernelStats; }
+
+    PortProxy &getPhysProxy() { return *physProxy; }
+
+    FSTranslatingPortProxy &getVirtProxy() { return *virtProxy; }
+
+    Process *getProcessPtr() { return process; }
+
+    SETranslatingPortProxy &getMemProxy() { return *proxy; }
+
+    /** Reads the number of instructions functionally executed and
+     * committed.
+     */
+    Counter readFuncExeInst() { return funcExeInst; }
+
+    /** Sets the total number of instructions functionally executed
+     * and committed.
+     */
+    void setFuncExeInst(Counter new_val) { funcExeInst = new_val; }
+
+    /** Returns the status of this thread. */
+    Status status() const { return _status; }
+
+    /** Sets the status of this thread. */
+    void setStatus(Status new_status) { _status = new_status; }
+
+  public:
+
+    /** Number of instructions committed. */
+    Counter numInst;
+    /** Stat for number instructions committed. */
+    Stats::Scalar numInsts;
+    /** Number of ops (including micro ops) committed. */
+    Counter numOp;
+    /** Stat for number ops (including micro ops) committed. */
+    Stats::Scalar numOps;
+    /** Stat for number of memory references. */
+    Stats::Scalar numMemRefs;
+
+    /** Number of simulated loads, used for tracking events based on
+     * the number of loads committed.
+     */
+    Counter numLoad;
+
+    /** The number of simulated loads committed prior to this run. */
+    Counter startNumLoad;
+
+  protected:
+    ThreadContext::Status _status;
+
+    // Pointer to the base CPU.
+    BaseCPU *baseCpu;
+
+    // system wide HW context id
+    int _contextId;
+
+    // Index of hardware thread context on the CPU that this represents.
+    ThreadID _threadId;
+
+  public:
+    /** Last time activate was called on this thread. */
+    Tick lastActivate;
+
+    /** Last time suspend was called on this thread. */
+    Tick lastSuspend;
+
+  public:
+    FunctionProfile *profile;
+    ProfileNode *profileNode;
+    Addr profilePC;
+    EndQuiesceEvent *quiesceEvent;
+
+    TheISA::Kernel::Statistics *kernelStats;
+
+  protected:
+    Process *process;
+
+    /** A port proxy outgoing only for functional accesses to physical
+     * addresses.*/
+    PortProxy *physProxy;
+
+    /** A translating port proxy, outgoing only, for functional
+     * accesse to virtual addresses. */
+    FSTranslatingPortProxy *virtProxy;
+    SETranslatingPortProxy *proxy;
+
+  public:
+    /*
+     * number of executed instructions, for matching with syscall trace
+     * points in EIO files.
+     */
+    Counter funcExeInst;
+
+    //
+    // Count failed store conditionals so we can warn of apparent
+    // application deadlock situations.
+    unsigned storeCondFailures;
+};
+
+#endif // __CPU_THREAD_STATE_HH__