--- /dev/null
+/*
+ * Copyright (c) 2002-2006 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: Steve Raasch
+ */
+
+#include <sstream>
+
+#include "base/misc.hh"
+#include "cpu/func_unit.hh"
+#include "sim/builder.hh"
+
+using namespace std;
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+// The funciton unit
+//
+FuncUnit::FuncUnit()
+{
+ capabilityList.reset();
+}
+
+
+// Copy constructor
+FuncUnit::FuncUnit(const FuncUnit &fu)
+{
+
+ for (int i = 0; i < Num_OpClasses; ++i) {
+ opLatencies[i] = fu.opLatencies[i];
+ issueLatencies[i] = fu.issueLatencies[i];
+ }
+
+ capabilityList = fu.capabilityList;
+}
+
+
+void
+FuncUnit::addCapability(OpClass cap, unsigned oplat, unsigned issuelat)
+{
+ if (issuelat == 0 || oplat == 0)
+ panic("FuncUnit: you don't really want a zero-cycle latency do you?");
+
+ capabilityList.set(cap);
+
+ opLatencies[cap] = oplat;
+ issueLatencies[cap] = issuelat;
+}
+
+bool
+FuncUnit::provides(OpClass capability)
+{
+ return capabilityList[capability];
+}
+
+bitset<Num_OpClasses>
+FuncUnit::capabilities()
+{
+ return capabilityList;
+}
+
+unsigned &
+FuncUnit::opLatency(OpClass cap)
+{
+ return opLatencies[cap];
+}
+
+unsigned
+FuncUnit::issueLatency(OpClass capability)
+{
+ return issueLatencies[capability];
+}
+
+////////////////////////////////////////////////////////////////////////////
+//
+// The SimObjects we use to get the FU information into the simulator
+//
+////////////////////////////////////////////////////////////////////////////
+
+//
+// We use 2 objects to specify this data in the INI file:
+// (1) OpDesc - Describes the operation class & latencies
+// (multiple OpDesc objects can refer to the same
+// operation classes)
+// (2) FUDesc - Describes the operations available in the unit &
+// the number of these units
+//
+//
+
+
+//
+// The operation-class description object
+//
+
+BEGIN_DECLARE_SIM_OBJECT_PARAMS(OpDesc)
+
+ SimpleEnumParam<OpClass> opClass;
+ Param<unsigned> opLat;
+ Param<unsigned> issueLat;
+
+END_DECLARE_SIM_OBJECT_PARAMS(OpDesc)
+
+BEGIN_INIT_SIM_OBJECT_PARAMS(OpDesc)
+
+ INIT_ENUM_PARAM(opClass, "type of operation", opClassStrings),
+ INIT_PARAM(opLat, "cycles until result is available"),
+ INIT_PARAM(issueLat, "cycles until another can be issued")
+
+END_INIT_SIM_OBJECT_PARAMS(OpDesc)
+
+
+CREATE_SIM_OBJECT(OpDesc)
+{
+ return new OpDesc(getInstanceName(), opClass, opLat, issueLat);
+}
+
+REGISTER_SIM_OBJECT("OpDesc", OpDesc)
+
+
+//
+// The FuDesc object
+//
+
+BEGIN_DECLARE_SIM_OBJECT_PARAMS(FUDesc)
+
+ SimObjectVectorParam<OpDesc *> opList;
+ Param<unsigned> count;
+
+END_DECLARE_SIM_OBJECT_PARAMS(FUDesc)
+
+
+BEGIN_INIT_SIM_OBJECT_PARAMS(FUDesc)
+
+ INIT_PARAM(opList, "list of operation classes for this FU type"),
+ INIT_PARAM(count, "number of these FU's available")
+
+END_INIT_SIM_OBJECT_PARAMS(FUDesc)
+
+
+CREATE_SIM_OBJECT(FUDesc)
+{
+ return new FUDesc(getInstanceName(), opList, count);
+}
+
+REGISTER_SIM_OBJECT("FUDesc", FUDesc)
+
--- /dev/null
+/*
+ * Copyright (c) 2002-2006 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: Steve Raasch
+ */
+
+#ifndef __CPU_FUNC_UNIT_HH__
+#define __CPU_FUNC_UNIT_HH__
+
+#include <bitset>
+#include <string>
+#include <vector>
+
+#include "cpu/op_class.hh"
+#include "sim/sim_object.hh"
+
+////////////////////////////////////////////////////////////////////////////
+//
+// Structures used ONLY during the initialization phase...
+//
+//
+//
+
+struct OpDesc : public SimObject
+{
+ OpClass opClass;
+ unsigned opLat;
+ unsigned issueLat;
+
+ OpDesc(std::string name, OpClass c, unsigned o, unsigned i)
+ : SimObject(name), opClass(c), opLat(o), issueLat(i) {};
+};
+
+struct FUDesc : public SimObject
+{
+ std::vector<OpDesc *> opDescList;
+ unsigned number;
+
+ FUDesc(std::string name, std::vector<OpDesc *> l, unsigned n)
+ : SimObject(name), opDescList(l), number(n) {};
+};
+
+typedef std::vector<OpDesc *>::iterator OPDDiterator;
+typedef std::vector<FUDesc *>::iterator FUDDiterator;
+
+
+
+
+////////////////////////////////////////////////////////////////////////////
+//
+// The actual FU object
+//
+//
+//
+class FuncUnit
+{
+ private:
+ unsigned opLatencies[Num_OpClasses];
+ unsigned issueLatencies[Num_OpClasses];
+ std::bitset<Num_OpClasses> capabilityList;
+
+ public:
+ FuncUnit();
+ FuncUnit(const FuncUnit &fu);
+
+ std::string name;
+
+ void addCapability(OpClass cap, unsigned oplat, unsigned issuelat);
+
+ bool provides(OpClass capability);
+ std::bitset<Num_OpClasses> capabilities();
+
+ unsigned &opLatency(OpClass capability);
+ unsigned issueLatency(OpClass capability);
+};
+
+#endif // __FU_POOL_HH__
projects / gem5.git / commitdiff