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authorKorey Sewell <ksewell@umich.edu>2009-02-10 15:49:29 -0800
committerKorey Sewell <ksewell@umich.edu>2009-02-10 15:49:29 -0800
commit973d8b8b13b8e4ea178cafa95aaf6538699b8b15 (patch)
tree79321a7384b1fbd183a39e98e28dfa4e9e99d828 /src/cpu/inorder/resources/execution_unit.hh
parent36d9065f5f716f88c82a3f4e9a75fa040039aa0a (diff)
downloadgem5-973d8b8b13b8e4ea178cafa95aaf6538699b8b15.tar.xz
InOrder: Import new inorder CPU model from MIPS.
This model currently only works in MIPS_SE mode, so it will take some effort to clean it up and make it generally useful. Hopefully people are willing to help make that happen!
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+/*
+ * Copyright (c) 2007 MIPS Technologies, Inc.
+ * 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: Korey Sewell
+ *
+ */
+
+#ifndef __CPU_INORDER_EXECUTION_UNIT_HH__
+#define __CPU_INORDER_EXECUTION_UNIT_HH__
+
+#include <vector>
+#include <list>
+#include <string>
+
+#include "cpu/func_unit.hh"
+#include "cpu/inorder/first_stage.hh"
+#include "cpu/inorder/resource.hh"
+#include "cpu/inorder/inorder_dyn_inst.hh"
+
+class ExecutionUnit : public Resource {
+ public:
+ typedef ThePipeline::DynInstPtr DynInstPtr;
+
+ enum Command {
+ ExecuteInst
+ };
+
+ public:
+ ExecutionUnit(std::string res_name, int res_id, int res_width,
+ int res_latency, InOrderCPU *_cpu, ThePipeline::Params *params);
+ virtual ~ExecutionUnit() {}
+
+ public:
+ virtual void regStats();
+
+ /** Execute the function of this resource. The Default is action
+ * is to do nothing. More specific models will derive from this
+ * class and define their own execute function.
+ */
+ virtual void execute(int slot_num);
+
+ protected:
+ /////////////////////////////////////////////////////////////////
+ //
+ // RESOURCE STATISTICS
+ //
+ /////////////////////////////////////////////////////////////////
+ Stats::Scalar<> predictedTakenIncorrect;
+ Stats::Scalar<> predictedNotTakenIncorrect;
+};
+
+
+#endif //__CPU_INORDER_EXCUTION_UNIT_HH__