base.hh revision 3661
12SN/A/* 21762SN/A * Copyright (c) 2002-2005 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Steve Reinhardt 292665Ssaidi@eecs.umich.edu * Nathan Binkert 302SN/A */ 312SN/A 321717SN/A#ifndef __CPU_BASE_HH__ 331717SN/A#define __CPU_BASE_HH__ 342SN/A 352SN/A#include <vector> 362SN/A 37707SN/A#include "base/statistics.hh" 381858SN/A#include "config/full_system.hh" 3956SN/A#include "sim/eventq.hh" 402856Srdreslin@umich.edu#include "mem/mem_object.hh" 412109SN/A#include "arch/isa_traits.hh" 422SN/A 433520Sgblack@eecs.umich.edu#if FULL_SYSTEM 443520Sgblack@eecs.umich.edu#include "arch/interrupts.hh" 453520Sgblack@eecs.umich.edu#endif 463520Sgblack@eecs.umich.edu 472190SN/Aclass BranchPred; 482315SN/Aclass CheckerCPU; 492680Sktlim@umich.educlass ThreadContext; 502SN/Aclass System; 512856Srdreslin@umich.educlass Port; 522SN/A 532356SN/Aclass CPUProgressEvent : public Event 542356SN/A{ 552356SN/A protected: 562356SN/A Tick interval; 572356SN/A Counter lastNumInst; 582356SN/A BaseCPU *cpu; 592356SN/A 602356SN/A public: 613126Sktlim@umich.edu CPUProgressEvent(EventQueue *q, Tick ival, BaseCPU *_cpu); 622356SN/A 632356SN/A void process(); 642356SN/A 652356SN/A virtual const char *description(); 662356SN/A}; 672356SN/A 682856Srdreslin@umich.educlass BaseCPU : public MemObject 692SN/A{ 701634SN/A protected: 711634SN/A // CPU's clock period in terms of the number of ticks of curTime. 721695SN/A Tick clock; 731634SN/A 741634SN/A public: 752359SN/A// Tick currentTick; 761695SN/A inline Tick frequency() const { return Clock::Frequency / clock; } 771695SN/A inline Tick cycles(int numCycles) const { return clock * numCycles; } 781695SN/A inline Tick curCycle() const { return curTick / clock; } 791634SN/A 803495Sktlim@umich.edu /** The next cycle the CPU should be scheduled, given a cache 813495Sktlim@umich.edu * access or quiesce event returning on this cycle. This function 823495Sktlim@umich.edu * may return curTick if the CPU should run on the current cycle. 833495Sktlim@umich.edu */ 843495Sktlim@umich.edu Tick nextCycle(); 853495Sktlim@umich.edu 863495Sktlim@umich.edu /** The next cycle the CPU should be scheduled, given a cache 873495Sktlim@umich.edu * access or quiesce event returning on the given Tick. This 883495Sktlim@umich.edu * function may return curTick if the CPU should run on the 893495Sktlim@umich.edu * current cycle. 903495Sktlim@umich.edu * @param begin_tick The tick that the event is completing on. 913495Sktlim@umich.edu */ 923495Sktlim@umich.edu Tick nextCycle(Tick begin_tick); 933495Sktlim@umich.edu 941858SN/A#if FULL_SYSTEM 952SN/A protected: 963520Sgblack@eecs.umich.edu// uint64_t interrupts[TheISA::NumInterruptLevels]; 973520Sgblack@eecs.umich.edu// uint64_t intstatus; 983520Sgblack@eecs.umich.edu TheISA::Interrupts interrupts; 992SN/A 1002SN/A public: 1012SN/A virtual void post_interrupt(int int_num, int index); 1022SN/A virtual void clear_interrupt(int int_num, int index); 1032SN/A virtual void clear_interrupts(); 1041133SN/A bool checkInterrupts; 1052SN/A 1063521Sgblack@eecs.umich.edu bool check_interrupts(ThreadContext * tc) const 1073521Sgblack@eecs.umich.edu { return interrupts.check_interrupts(tc); } 1081917SN/A 1091917SN/A class ProfileEvent : public Event 1101917SN/A { 1111917SN/A private: 1121917SN/A BaseCPU *cpu; 1131917SN/A int interval; 1141917SN/A 1151917SN/A public: 1161917SN/A ProfileEvent(BaseCPU *cpu, int interval); 1171917SN/A void process(); 1181917SN/A }; 1191917SN/A ProfileEvent *profileEvent; 1202SN/A#endif 1212SN/A 1222SN/A protected: 1232680Sktlim@umich.edu std::vector<ThreadContext *> threadContexts; 1242SN/A 1252SN/A public: 126393SN/A 127393SN/A /// Notify the CPU that the indicated context is now active. The 128393SN/A /// delay parameter indicates the number of ticks to wait before 129393SN/A /// executing (typically 0 or 1). 130393SN/A virtual void activateContext(int thread_num, int delay) {} 131393SN/A 132393SN/A /// Notify the CPU that the indicated context is now suspended. 133393SN/A virtual void suspendContext(int thread_num) {} 134393SN/A 135393SN/A /// Notify the CPU that the indicated context is now deallocated. 136393SN/A virtual void deallocateContext(int thread_num) {} 137393SN/A 138393SN/A /// Notify the CPU that the indicated context is now halted. 139393SN/A virtual void haltContext(int thread_num) {} 1402SN/A 1412SN/A public: 1421400SN/A struct Params 1431400SN/A { 1441400SN/A std::string name; 1451400SN/A int numberOfThreads; 1461400SN/A bool deferRegistration; 1471400SN/A Counter max_insts_any_thread; 1481400SN/A Counter max_insts_all_threads; 1491400SN/A Counter max_loads_any_thread; 1501400SN/A Counter max_loads_all_threads; 1511695SN/A Tick clock; 1521400SN/A bool functionTrace; 1531400SN/A Tick functionTraceStart; 1542378SN/A System *system; 1553170Sstever@eecs.umich.edu int cpu_id; 1563661Srdreslin@umich.edu Tick phase; 1571858SN/A#if FULL_SYSTEM 1581917SN/A Tick profile; 1593617Sbinkertn@umich.edu 1603617Sbinkertn@umich.edu bool do_statistics_insts; 1613617Sbinkertn@umich.edu bool do_checkpoint_insts; 1623617Sbinkertn@umich.edu bool do_quiesce; 1631400SN/A#endif 1642356SN/A Tick progress_interval; 1652315SN/A BaseCPU *checker; 1661917SN/A 1671917SN/A Params(); 1681400SN/A }; 1692SN/A 1701400SN/A const Params *params; 1712SN/A 1721400SN/A BaseCPU(Params *params); 1731191SN/A virtual ~BaseCPU(); 1742SN/A 1751129SN/A virtual void init(); 1761917SN/A virtual void startup(); 1772SN/A virtual void regStats(); 1782SN/A 1792103SN/A virtual void activateWhenReady(int tid) {}; 1802103SN/A 1812680Sktlim@umich.edu void registerThreadContexts(); 182180SN/A 1831492SN/A /// Prepare for another CPU to take over execution. When it is 1841492SN/A /// is ready (drained pipe) it signals the sampler. 1852798Sktlim@umich.edu virtual void switchOut(); 186180SN/A 187180SN/A /// Take over execution from the given CPU. Used for warm-up and 188180SN/A /// sampling. 189180SN/A virtual void takeOverFrom(BaseCPU *); 190180SN/A 191124SN/A /** 192124SN/A * Number of threads we're actually simulating (<= SMT_MAX_THREADS). 193124SN/A * This is a constant for the duration of the simulation. 194124SN/A */ 1952SN/A int number_of_threads; 1962SN/A 197124SN/A /** 198124SN/A * Vector of per-thread instruction-based event queues. Used for 199124SN/A * scheduling events based on number of instructions committed by 200124SN/A * a particular thread. 201124SN/A */ 202503SN/A EventQueue **comInstEventQueue; 2032SN/A 204124SN/A /** 205124SN/A * Vector of per-thread load-based event queues. Used for 206124SN/A * scheduling events based on number of loads committed by 207124SN/A *a particular thread. 208124SN/A */ 209124SN/A EventQueue **comLoadEventQueue; 210124SN/A 2112SN/A System *system; 212921SN/A 2133661Srdreslin@umich.edu Tick phase; 2143661Srdreslin@umich.edu 2152378SN/A#if FULL_SYSTEM 216921SN/A /** 217921SN/A * Serialize this object to the given output stream. 218921SN/A * @param os The stream to serialize to. 219921SN/A */ 220921SN/A virtual void serialize(std::ostream &os); 221921SN/A 222921SN/A /** 223921SN/A * Reconstruct the state of this object from a checkpoint. 224921SN/A * @param cp The checkpoint use. 225921SN/A * @param section The section name of this object 226921SN/A */ 227921SN/A virtual void unserialize(Checkpoint *cp, const std::string §ion); 228921SN/A 2292SN/A#endif 2302SN/A 231124SN/A /** 232124SN/A * Return pointer to CPU's branch predictor (NULL if none). 233124SN/A * @return Branch predictor pointer. 234124SN/A */ 2352SN/A virtual BranchPred *getBranchPred() { return NULL; }; 2362SN/A 237707SN/A virtual Counter totalInstructions() const { return 0; } 238707SN/A 2391191SN/A // Function tracing 2401191SN/A private: 2411191SN/A bool functionTracingEnabled; 2421191SN/A std::ostream *functionTraceStream; 2431191SN/A Addr currentFunctionStart; 2441191SN/A Addr currentFunctionEnd; 2451191SN/A Tick functionEntryTick; 2461191SN/A void enableFunctionTrace(); 2471191SN/A void traceFunctionsInternal(Addr pc); 2481191SN/A 2491191SN/A protected: 2501191SN/A void traceFunctions(Addr pc) 2511191SN/A { 2521191SN/A if (functionTracingEnabled) 2531191SN/A traceFunctionsInternal(pc); 2541191SN/A } 2551191SN/A 2562SN/A private: 2572SN/A static std::vector<BaseCPU *> cpuList; //!< Static global cpu list 2582SN/A 2592SN/A public: 2602SN/A static int numSimulatedCPUs() { return cpuList.size(); } 261707SN/A static Counter numSimulatedInstructions() 262707SN/A { 263707SN/A Counter total = 0; 264707SN/A 265707SN/A int size = cpuList.size(); 266707SN/A for (int i = 0; i < size; ++i) 267707SN/A total += cpuList[i]->totalInstructions(); 268707SN/A 269707SN/A return total; 270707SN/A } 271707SN/A 272707SN/A public: 273707SN/A // Number of CPU cycles simulated 274729SN/A Stats::Scalar<> numCycles; 2752SN/A}; 2762SN/A 2771717SN/A#endif // __CPU_BASE_HH__ 278