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/pc_event.hh

@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2002-2005 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: Nathan Binkert
+ *          Steve Reinhardt
+ */
+
+#ifndef __PC_EVENT_HH__
+#define __PC_EVENT_HH__
+
+#include <vector>
+
+#include "base/misc.hh"
+#include "base/types.hh"
+
+class ThreadContext;
+class PCEventQueue;
+
+class PCEvent
+{
+  protected:
+    std::string description;
+    PCEventQueue *queue;
+    Addr evpc;
+
+  public:
+    PCEvent(PCEventQueue *q, const std::string &desc, Addr pc);
+
+    virtual ~PCEvent() { if (queue) remove(); }
+
+    // for DPRINTF
+    virtual const std::string name() const { return description; }
+
+    std::string descr() const { return description; }
+    Addr pc() const { return evpc; }
+
+    bool remove();
+    virtual void process(ThreadContext *tc) = 0;
+};
+
+class PCEventQueue
+{
+  protected:
+    typedef PCEvent * record_t;
+    class MapCompare {
+      public:
+        bool operator()(const record_t &l, const record_t &r) const {
+            return l->pc() < r->pc();
+        }
+        bool operator()(const record_t &l, Addr pc) const {
+            return l->pc() < pc;
+        }
+        bool operator()(Addr pc, const record_t &r) const {
+            return pc < r->pc();
+        }
+    };
+    typedef std::vector<record_t> map_t;
+
+  public:
+    typedef map_t::iterator iterator;
+    typedef map_t::const_iterator const_iterator;
+
+  protected:
+    typedef std::pair<iterator, iterator> range_t;
+    typedef std::pair<const_iterator, const_iterator> const_range_t;
+
+  protected:
+    map_t pc_map;
+
+    bool doService(ThreadContext *tc);
+
+  public:
+    PCEventQueue();
+    ~PCEventQueue();
+
+    bool remove(PCEvent *event);
+    bool schedule(PCEvent *event);
+    bool service(ThreadContext *tc)
+    {
+        if (pc_map.empty())
+            return false;
+
+        return doService(tc);
+    }
+
+    range_t equal_range(Addr pc);
+    range_t equal_range(PCEvent *event) { return equal_range(event->pc()); }
+
+    void dump() const;
+};
+
+
+inline
+PCEvent::PCEvent(PCEventQueue *q, const std::string &desc, Addr pc)
+    : description(desc), queue(q), evpc(pc)
+{
+    queue->schedule(this);
+}
+
+inline bool
+PCEvent::remove()
+{
+    if (!queue)
+        panic("cannot remove an uninitialized event;");
+
+    return queue->remove(this);
+}
+
+class BreakPCEvent : public PCEvent
+{
+  protected:
+    bool remove;
+
+  public:
+    BreakPCEvent(PCEventQueue *q, const std::string &desc, Addr addr,
+                 bool del = false);
+    virtual void process(ThreadContext *tc);
+};
+
+#endif // __PC_EVENT_HH__