base.hh revision 4000
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; 733814Ssaidi@eecs.umich.edu // @todo remove me after debugging with legion done 743814Ssaidi@eecs.umich.edu Tick instCnt; 751634SN/A 761634SN/A public: 772359SN/A// Tick currentTick; 781695SN/A inline Tick frequency() const { return Clock::Frequency / clock; } 791695SN/A inline Tick cycles(int numCycles) const { return clock * numCycles; } 801695SN/A inline Tick curCycle() const { return curTick / clock; } 813814Ssaidi@eecs.umich.edu // @todo remove me after debugging with legion done 823814Ssaidi@eecs.umich.edu Tick instCount() { return instCnt; } 831634SN/A 843495Sktlim@umich.edu /** The next cycle the CPU should be scheduled, given a cache 853495Sktlim@umich.edu * access or quiesce event returning on this cycle. This function 863495Sktlim@umich.edu * may return curTick if the CPU should run on the current cycle. 873495Sktlim@umich.edu */ 883495Sktlim@umich.edu Tick nextCycle(); 893495Sktlim@umich.edu 903495Sktlim@umich.edu /** The next cycle the CPU should be scheduled, given a cache 913495Sktlim@umich.edu * access or quiesce event returning on the given Tick. This 923495Sktlim@umich.edu * function may return curTick if the CPU should run on the 933495Sktlim@umich.edu * current cycle. 943495Sktlim@umich.edu * @param begin_tick The tick that the event is completing on. 953495Sktlim@umich.edu */ 963495Sktlim@umich.edu Tick nextCycle(Tick begin_tick); 973495Sktlim@umich.edu 981858SN/A#if FULL_SYSTEM 992SN/A protected: 1003520Sgblack@eecs.umich.edu// uint64_t interrupts[TheISA::NumInterruptLevels]; 1013520Sgblack@eecs.umich.edu// uint64_t intstatus; 1023520Sgblack@eecs.umich.edu TheISA::Interrupts interrupts; 1032SN/A 1042SN/A public: 1053894Shsul@eecs.umich.edu virtual void post_interrupt(int int_type); 1062SN/A virtual void post_interrupt(int int_num, int index); 1072SN/A virtual void clear_interrupt(int int_num, int index); 1082SN/A virtual void clear_interrupts(); 1092SN/A 1103521Sgblack@eecs.umich.edu bool check_interrupts(ThreadContext * tc) const 1113521Sgblack@eecs.umich.edu { return interrupts.check_interrupts(tc); } 1121917SN/A 1131917SN/A class ProfileEvent : public Event 1141917SN/A { 1151917SN/A private: 1161917SN/A BaseCPU *cpu; 1171917SN/A int interval; 1181917SN/A 1191917SN/A public: 1201917SN/A ProfileEvent(BaseCPU *cpu, int interval); 1211917SN/A void process(); 1221917SN/A }; 1231917SN/A ProfileEvent *profileEvent; 1242SN/A#endif 1252SN/A 1262SN/A protected: 1272680Sktlim@umich.edu std::vector<ThreadContext *> threadContexts; 1282SN/A 1292SN/A public: 130393SN/A 131393SN/A /// Notify the CPU that the indicated context is now active. The 132393SN/A /// delay parameter indicates the number of ticks to wait before 133393SN/A /// executing (typically 0 or 1). 134393SN/A virtual void activateContext(int thread_num, int delay) {} 135393SN/A 136393SN/A /// Notify the CPU that the indicated context is now suspended. 137393SN/A virtual void suspendContext(int thread_num) {} 138393SN/A 139393SN/A /// Notify the CPU that the indicated context is now deallocated. 140393SN/A virtual void deallocateContext(int thread_num) {} 141393SN/A 142393SN/A /// Notify the CPU that the indicated context is now halted. 143393SN/A virtual void haltContext(int thread_num) {} 1442SN/A 1454000Ssaidi@eecs.umich.edu /// Given a Thread Context pointer return the thread num 1464000Ssaidi@eecs.umich.edu int findContext(ThreadContext *tc); 1474000Ssaidi@eecs.umich.edu 1484000Ssaidi@eecs.umich.edu /// Given a thread num get tho thread context for it 1494000Ssaidi@eecs.umich.edu ThreadContext *getContext(int tn) { return threadContexts[tn]; } 1504000Ssaidi@eecs.umich.edu 1512SN/A public: 1521400SN/A struct Params 1531400SN/A { 1541400SN/A std::string name; 1551400SN/A int numberOfThreads; 1561400SN/A bool deferRegistration; 1571400SN/A Counter max_insts_any_thread; 1581400SN/A Counter max_insts_all_threads; 1591400SN/A Counter max_loads_any_thread; 1601400SN/A Counter max_loads_all_threads; 1611695SN/A Tick clock; 1621400SN/A bool functionTrace; 1631400SN/A Tick functionTraceStart; 1642378SN/A System *system; 1653170Sstever@eecs.umich.edu int cpu_id; 1663661Srdreslin@umich.edu Tick phase; 1671858SN/A#if FULL_SYSTEM 1681917SN/A Tick profile; 1693617Sbinkertn@umich.edu 1703617Sbinkertn@umich.edu bool do_statistics_insts; 1713617Sbinkertn@umich.edu bool do_checkpoint_insts; 1723617Sbinkertn@umich.edu bool do_quiesce; 1731400SN/A#endif 1742356SN/A Tick progress_interval; 1752315SN/A BaseCPU *checker; 1761917SN/A 1771917SN/A Params(); 1781400SN/A }; 1792SN/A 1801400SN/A const Params *params; 1812SN/A 1821400SN/A BaseCPU(Params *params); 1831191SN/A virtual ~BaseCPU(); 1842SN/A 1851129SN/A virtual void init(); 1861917SN/A virtual void startup(); 1872SN/A virtual void regStats(); 1882SN/A 1892103SN/A virtual void activateWhenReady(int tid) {}; 1902103SN/A 1912680Sktlim@umich.edu void registerThreadContexts(); 192180SN/A 1931492SN/A /// Prepare for another CPU to take over execution. When it is 1941492SN/A /// is ready (drained pipe) it signals the sampler. 1952798Sktlim@umich.edu virtual void switchOut(); 196180SN/A 197180SN/A /// Take over execution from the given CPU. Used for warm-up and 198180SN/A /// sampling. 199180SN/A virtual void takeOverFrom(BaseCPU *); 200180SN/A 201124SN/A /** 202124SN/A * Number of threads we're actually simulating (<= SMT_MAX_THREADS). 203124SN/A * This is a constant for the duration of the simulation. 204124SN/A */ 2052SN/A int number_of_threads; 2062SN/A 207124SN/A /** 208124SN/A * Vector of per-thread instruction-based event queues. Used for 209124SN/A * scheduling events based on number of instructions committed by 210124SN/A * a particular thread. 211124SN/A */ 212503SN/A EventQueue **comInstEventQueue; 2132SN/A 214124SN/A /** 215124SN/A * Vector of per-thread load-based event queues. Used for 216124SN/A * scheduling events based on number of loads committed by 217124SN/A *a particular thread. 218124SN/A */ 219124SN/A EventQueue **comLoadEventQueue; 220124SN/A 2212SN/A System *system; 222921SN/A 2233661Srdreslin@umich.edu Tick phase; 2243661Srdreslin@umich.edu 2252378SN/A#if FULL_SYSTEM 226921SN/A /** 227921SN/A * Serialize this object to the given output stream. 228921SN/A * @param os The stream to serialize to. 229921SN/A */ 230921SN/A virtual void serialize(std::ostream &os); 231921SN/A 232921SN/A /** 233921SN/A * Reconstruct the state of this object from a checkpoint. 234921SN/A * @param cp The checkpoint use. 235921SN/A * @param section The section name of this object 236921SN/A */ 237921SN/A virtual void unserialize(Checkpoint *cp, const std::string §ion); 238921SN/A 2392SN/A#endif 2402SN/A 241124SN/A /** 242124SN/A * Return pointer to CPU's branch predictor (NULL if none). 243124SN/A * @return Branch predictor pointer. 244124SN/A */ 2452SN/A virtual BranchPred *getBranchPred() { return NULL; }; 2462SN/A 247707SN/A virtual Counter totalInstructions() const { return 0; } 248707SN/A 2491191SN/A // Function tracing 2501191SN/A private: 2511191SN/A bool functionTracingEnabled; 2521191SN/A std::ostream *functionTraceStream; 2531191SN/A Addr currentFunctionStart; 2541191SN/A Addr currentFunctionEnd; 2551191SN/A Tick functionEntryTick; 2561191SN/A void enableFunctionTrace(); 2571191SN/A void traceFunctionsInternal(Addr pc); 2581191SN/A 2591191SN/A protected: 2601191SN/A void traceFunctions(Addr pc) 2611191SN/A { 2621191SN/A if (functionTracingEnabled) 2631191SN/A traceFunctionsInternal(pc); 2641191SN/A } 2651191SN/A 2662SN/A private: 2672SN/A static std::vector<BaseCPU *> cpuList; //!< Static global cpu list 2682SN/A 2692SN/A public: 2702SN/A static int numSimulatedCPUs() { return cpuList.size(); } 271707SN/A static Counter numSimulatedInstructions() 272707SN/A { 273707SN/A Counter total = 0; 274707SN/A 275707SN/A int size = cpuList.size(); 276707SN/A for (int i = 0; i < size; ++i) 277707SN/A total += cpuList[i]->totalInstructions(); 278707SN/A 279707SN/A return total; 280707SN/A } 281707SN/A 282707SN/A public: 283707SN/A // Number of CPU cycles simulated 284729SN/A Stats::Scalar<> numCycles; 2852SN/A}; 2862SN/A 2871717SN/A#endif // __CPU_BASE_HH__ 288