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-/*
- * Copyright (c) 2003 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.
- */
-
-#ifndef __BASE_CPU_HH__
-#define __BASE_CPU_HH__
-
-#include <vector>
-
-#include "eventq.hh"
-#include "sim_object.hh"
-
-#include "isa_traits.hh" // for Addr
-
-#ifdef FULL_SYSTEM
-class System;
-#endif
-
-class BranchPred;
-class ExecContext;
-
-class BaseCPU : public SimObject
-{
-#ifdef FULL_SYSTEM
- protected:
- int number;
- Tick frequency;
- uint8_t interrupts[NumInterruptLevels];
- uint64_t intstatus;
-
- public:
- virtual void post_interrupt(int int_num, int index);
- virtual void clear_interrupt(int int_num, int index);
- virtual void clear_interrupts();
-
- bool check_interrupt(int int_num) const {
- if (int_num > NumInterruptLevels)
- panic("int_num out of bounds\n");
-
- return interrupts[int_num] != 0;
- }
-
- bool check_interrupts() const { return intstatus != 0; }
- uint64_t intr_status() const { return intstatus; }
-
- Tick getFreq() const { return frequency; }
-#endif
-
- protected:
- std::vector<ExecContext *> contexts;
-
- public:
- virtual void execCtxStatusChg() {}
-
- public:
-
-#ifdef FULL_SYSTEM
- BaseCPU(const std::string &_name, int _number_of_threads,
- Counter max_insts_any_thread, Counter max_insts_all_threads,
- System *_system,
- int num, Tick freq);
-#else
- BaseCPU(const std::string &_name, int _number_of_threads,
- Counter max_insts_any_thread = 0,
- Counter max_insts_all_threads = 0);
-#endif
-
- virtual ~BaseCPU() {}
-
- virtual void regStats();
-
- /// Number of threads we're actually simulating (<= SMT_MAX_THREADS).
- /// This is a constant for the duration of the simulation.
- int number_of_threads;
-
- /// Vector of per-thread instruction-based event queues. Used for
- /// scheduling events based on number of instructions committed by
- /// a particular thread.
- EventQueue **comInsnEventQueue;
-
-#ifdef FULL_SYSTEM
- System *system;
-#endif
-
- virtual bool filterThisInstructionPrefetch(int thread_number,
- short asid, Addr prefetchTarget) const { return true; }
-
- /// Return pointer to CPU's branch predictor (NULL if none).
- virtual BranchPred *getBranchPred() { return NULL; };
-
- private:
- static std::vector<BaseCPU *> cpuList; //!< Static global cpu list
-
- public:
- static int numSimulatedCPUs() { return cpuList.size(); }
-};
-
-#endif // __BASE_CPU_HH__