ruby: Import ruby and slicc from GEMS

We eventually plan to replace the m5 cache hierarchy with the GEMS
hierarchy, but for now we will make both live alongside eachother.

1 files changed, 120 insertions, 0 deletions

diff --git a/src/mem/ruby/system/StoreBuffer.hh b/src/mem/ruby/system/StoreBuffer.hh
new file mode 100644
index 000000000..832e4f0bb
--- /dev/null
+++ b/src/mem/ruby/system/StoreBuffer.hh
@@ -0,0 +1,120 @@
+
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * 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.
+ */
+
+/*
+ * $Id$
+ *
+ * Description:
+ *
+ */
+
+#ifndef StoreBuffer_H
+#define StoreBuffer_H
+
+#include "Global.hh"
+#include "Consumer.hh"
+#include "Address.hh"
+#include "AccessModeType.hh"
+#include "CacheRequestType.hh"
+#include "StoreCache.hh"
+
+class CacheMsg;
+class DataBlock;
+class SubBlock;
+class StoreBufferEntry;
+class AbstractChip;
+
+template <class TYPE> class Vector;
+
+class StoreBuffer : public Consumer {
+public:
+  // Constructors
+  StoreBuffer(AbstractChip* chip_ptr, int version);
+
+  // Destructor
+  ~StoreBuffer();
+
+  // Public Methods
+  void wakeup(); // Used only for deadlock detection
+  void callBack(const Address& addr, DataBlock& data);
+  void insertStore(const CacheMsg& request);
+  void updateSubBlock(SubBlock& sub_block) const { m_store_cache.update(sub_block); }
+  bool trySubBlock(const SubBlock& sub_block) const { assert(isReady()); return m_store_cache.check(sub_block); }
+  void print(ostream& out) const;
+  bool isEmpty() const { return (m_size == 0); }
+  bool isReady() const;
+
+  // Class methods
+  static void printConfig(ostream& out);
+
+private:
+  // Private Methods
+  void processHeadOfQueue();
+
+  StoreBufferEntry& peek();
+  void dequeue();
+  void enqueue(const StoreBufferEntry& entry);
+  StoreBufferEntry& getEntry(int index);
+
+  // Private copy constructor and assignment operator
+  StoreBuffer(const StoreBuffer& obj);
+  StoreBuffer& operator=(const StoreBuffer& obj);
+
+  // Data Members (m_ prefix)
+  int m_version;
+
+  Vector<StoreBufferEntry>* m_queue_ptr;
+  int m_head;
+  int m_tail;
+  int m_size;
+
+  StoreCache m_store_cache;
+
+  AbstractChip* m_chip_ptr;
+  bool m_pending;
+  Address m_pending_address;
+  bool m_seen_atomic;
+  bool m_deadlock_check_scheduled;
+};
+
+// Output operator declaration
+ostream& operator<<(ostream& out, const StoreBuffer& obj);
+
+// ******************* Definitions *******************
+
+// Output operator definition
+extern inline
+ostream& operator<<(ostream& out, const StoreBuffer& obj)
+{
+  obj.print(out);
+  out << flush;
+  return out;
+}
+
+#endif //StoreBuffer_H