base_dyn_inst.hh revision 9046
11060SN/A/* 27944SGiacomo.Gabrielli@arm.com * Copyright (c) 2011 ARM Limited 37944SGiacomo.Gabrielli@arm.com * All rights reserved. 47944SGiacomo.Gabrielli@arm.com * 57944SGiacomo.Gabrielli@arm.com * The license below extends only to copyright in the software and shall 67944SGiacomo.Gabrielli@arm.com * not be construed as granting a license to any other intellectual 77944SGiacomo.Gabrielli@arm.com * property including but not limited to intellectual property relating 87944SGiacomo.Gabrielli@arm.com * to a hardware implementation of the functionality of the software 97944SGiacomo.Gabrielli@arm.com * licensed hereunder. You may use the software subject to the license 107944SGiacomo.Gabrielli@arm.com * terms below provided that you ensure that this notice is replicated 117944SGiacomo.Gabrielli@arm.com * unmodified and in its entirety in all distributions of the software, 127944SGiacomo.Gabrielli@arm.com * modified or unmodified, in source code or in binary form. 137944SGiacomo.Gabrielli@arm.com * 142702Sktlim@umich.edu * Copyright (c) 2004-2006 The Regents of The University of Michigan 156973Stjones1@inf.ed.ac.uk * Copyright (c) 2009 The University of Edinburgh 161060SN/A * All rights reserved. 171060SN/A * 181060SN/A * Redistribution and use in source and binary forms, with or without 191060SN/A * modification, are permitted provided that the following conditions are 201060SN/A * met: redistributions of source code must retain the above copyright 211060SN/A * notice, this list of conditions and the following disclaimer; 221060SN/A * redistributions in binary form must reproduce the above copyright 231060SN/A * notice, this list of conditions and the following disclaimer in the 241060SN/A * documentation and/or other materials provided with the distribution; 251060SN/A * neither the name of the copyright holders nor the names of its 261060SN/A * contributors may be used to endorse or promote products derived from 271060SN/A * this software without specific prior written permission. 281060SN/A * 291060SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 301060SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 311060SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 321060SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 331060SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 341060SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 351060SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 361060SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 371060SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 381060SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 391060SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 402665Ssaidi@eecs.umich.edu * 412665Ssaidi@eecs.umich.edu * Authors: Kevin Lim 426973Stjones1@inf.ed.ac.uk * Timothy M. Jones 431060SN/A */ 441060SN/A 451464SN/A#ifndef __CPU_BASE_DYN_INST_HH__ 461464SN/A#define __CPU_BASE_DYN_INST_HH__ 471060SN/A 482731Sktlim@umich.edu#include <bitset> 492292SN/A#include <list> 501464SN/A#include <string> 518733Sgeoffrey.blake@arm.com#include <queue> 521060SN/A 537720Sgblack@eecs.umich.edu#include "arch/utility.hh" 541060SN/A#include "base/trace.hh" 556658Snate@binkert.org#include "config/the_isa.hh" 568887Sgeoffrey.blake@arm.com#include "cpu/checker/cpu.hh" 573770Sgblack@eecs.umich.edu#include "cpu/o3/comm.hh" 581464SN/A#include "cpu/exetrace.hh" 591464SN/A#include "cpu/inst_seq.hh" 602669Sktlim@umich.edu#include "cpu/op_class.hh" 611060SN/A#include "cpu/static_inst.hh" 626973Stjones1@inf.ed.ac.uk#include "cpu/translation.hh" 632669Sktlim@umich.edu#include "mem/packet.hh" 647678Sgblack@eecs.umich.edu#include "sim/byteswap.hh" 658817Sgblack@eecs.umich.edu#include "sim/fault_fwd.hh" 662292SN/A#include "sim/system.hh" 676023Snate@binkert.org#include "sim/tlb.hh" 681060SN/A 691060SN/A/** 701060SN/A * @file 711060SN/A * Defines a dynamic instruction context. 721060SN/A */ 731060SN/A 741060SN/Atemplate <class Impl> 759044SAli.Saidi@ARM.comclass BaseDynInst : public RefCounted 761060SN/A{ 771060SN/A public: 781060SN/A // Typedef for the CPU. 792733Sktlim@umich.edu typedef typename Impl::CPUType ImplCPU; 802733Sktlim@umich.edu typedef typename ImplCPU::ImplState ImplState; 811060SN/A 822292SN/A // Logical register index type. 832107SN/A typedef TheISA::RegIndex RegIndex; 842690Sktlim@umich.edu // Integer register type. 852107SN/A typedef TheISA::IntReg IntReg; 862690Sktlim@umich.edu // Floating point register type. 872690Sktlim@umich.edu typedef TheISA::FloatReg FloatReg; 881060SN/A 892292SN/A // The DynInstPtr type. 902292SN/A typedef typename Impl::DynInstPtr DynInstPtr; 918486Sgblack@eecs.umich.edu typedef RefCountingPtr<BaseDynInst<Impl> > BaseDynInstPtr; 922292SN/A 932292SN/A // The list of instructions iterator type. 942292SN/A typedef typename std::list<DynInstPtr>::iterator ListIt; 952292SN/A 961060SN/A enum { 975543Ssaidi@eecs.umich.edu MaxInstSrcRegs = TheISA::MaxInstSrcRegs, /// Max source regs 988902Sandreas.hansson@arm.com MaxInstDestRegs = TheISA::MaxInstDestRegs /// Max dest regs 991060SN/A }; 1001060SN/A 1019046SAli.Saidi@ARM.com union Result { 1029046SAli.Saidi@ARM.com uint64_t integer; 1039046SAli.Saidi@ARM.com double dbl; 1049046SAli.Saidi@ARM.com void set(uint64_t i) { integer = i; } 1059046SAli.Saidi@ARM.com void set(double d) { dbl = d; } 1069046SAli.Saidi@ARM.com void get(uint64_t& i) { i = integer; } 1079046SAli.Saidi@ARM.com void get(double& d) { d = dbl; } 1089046SAli.Saidi@ARM.com }; 1099046SAli.Saidi@ARM.com 1109046SAli.Saidi@ARM.com protected: 1119046SAli.Saidi@ARM.com enum Status { 1129046SAli.Saidi@ARM.com IqEntry, /// Instruction is in the IQ 1139046SAli.Saidi@ARM.com RobEntry, /// Instruction is in the ROB 1149046SAli.Saidi@ARM.com LsqEntry, /// Instruction is in the LSQ 1159046SAli.Saidi@ARM.com Completed, /// Instruction has completed 1169046SAli.Saidi@ARM.com ResultReady, /// Instruction has its result 1179046SAli.Saidi@ARM.com CanIssue, /// Instruction can issue and execute 1189046SAli.Saidi@ARM.com Issued, /// Instruction has issued 1199046SAli.Saidi@ARM.com Executed, /// Instruction has executed 1209046SAli.Saidi@ARM.com CanCommit, /// Instruction can commit 1219046SAli.Saidi@ARM.com AtCommit, /// Instruction has reached commit 1229046SAli.Saidi@ARM.com Committed, /// Instruction has committed 1239046SAli.Saidi@ARM.com Squashed, /// Instruction is squashed 1249046SAli.Saidi@ARM.com SquashedInIQ, /// Instruction is squashed in the IQ 1259046SAli.Saidi@ARM.com SquashedInLSQ, /// Instruction is squashed in the LSQ 1269046SAli.Saidi@ARM.com SquashedInROB, /// Instruction is squashed in the ROB 1279046SAli.Saidi@ARM.com RecoverInst, /// Is a recover instruction 1289046SAli.Saidi@ARM.com BlockingInst, /// Is a blocking instruction 1299046SAli.Saidi@ARM.com ThreadsyncWait, /// Is a thread synchronization instruction 1309046SAli.Saidi@ARM.com SerializeBefore, /// Needs to serialize on 1319046SAli.Saidi@ARM.com /// instructions ahead of it 1329046SAli.Saidi@ARM.com SerializeAfter, /// Needs to serialize instructions behind it 1339046SAli.Saidi@ARM.com SerializeHandled, /// Serialization has been handled 1349046SAli.Saidi@ARM.com NumStatus 1359046SAli.Saidi@ARM.com }; 1369046SAli.Saidi@ARM.com 1379046SAli.Saidi@ARM.com enum Flags { 1389046SAli.Saidi@ARM.com TranslationStarted, 1399046SAli.Saidi@ARM.com TranslationCompleted, 1409046SAli.Saidi@ARM.com PossibleLoadViolation, 1419046SAli.Saidi@ARM.com HitExternalSnoop, 1429046SAli.Saidi@ARM.com EffAddrValid, 1439046SAli.Saidi@ARM.com RecordResult, 1449046SAli.Saidi@ARM.com Predicate, 1459046SAli.Saidi@ARM.com PredTaken, 1469046SAli.Saidi@ARM.com /** Whether or not the effective address calculation is completed. 1479046SAli.Saidi@ARM.com * @todo: Consider if this is necessary or not. 1489046SAli.Saidi@ARM.com */ 1499046SAli.Saidi@ARM.com EACalcDone, 1509046SAli.Saidi@ARM.com IsUncacheable, 1519046SAli.Saidi@ARM.com ReqMade, 1529046SAli.Saidi@ARM.com MemOpDone, 1539046SAli.Saidi@ARM.com MaxFlags 1549046SAli.Saidi@ARM.com }; 1559046SAli.Saidi@ARM.com 1569046SAli.Saidi@ARM.com public: 1579046SAli.Saidi@ARM.com /** The sequence number of the instruction. */ 1589046SAli.Saidi@ARM.com InstSeqNum seqNum; 1599046SAli.Saidi@ARM.com 1602292SN/A /** The StaticInst used by this BaseDynInst. */ 1612107SN/A StaticInstPtr staticInst; 1629046SAli.Saidi@ARM.com 1639046SAli.Saidi@ARM.com /** Pointer to the Impl's CPU object. */ 1649046SAli.Saidi@ARM.com ImplCPU *cpu; 1659046SAli.Saidi@ARM.com 1669046SAli.Saidi@ARM.com /** Pointer to the thread state. */ 1679046SAli.Saidi@ARM.com ImplState *thread; 1689046SAli.Saidi@ARM.com 1699046SAli.Saidi@ARM.com /** The kind of fault this instruction has generated. */ 1709046SAli.Saidi@ARM.com Fault fault; 1719046SAli.Saidi@ARM.com 1729046SAli.Saidi@ARM.com /** InstRecord that tracks this instructions. */ 1739046SAli.Saidi@ARM.com Trace::InstRecord *traceData; 1749046SAli.Saidi@ARM.com 1759046SAli.Saidi@ARM.com protected: 1769046SAli.Saidi@ARM.com /** The result of the instruction; assumes an instruction can have many 1779046SAli.Saidi@ARM.com * destination registers. 1789046SAli.Saidi@ARM.com */ 1799046SAli.Saidi@ARM.com std::queue<Result> instResult; 1809046SAli.Saidi@ARM.com 1819046SAli.Saidi@ARM.com /** PC state for this instruction. */ 1829046SAli.Saidi@ARM.com TheISA::PCState pc; 1839046SAli.Saidi@ARM.com 1849046SAli.Saidi@ARM.com /* An amalgamation of a lot of boolean values into one */ 1859046SAli.Saidi@ARM.com std::bitset<MaxFlags> instFlags; 1869046SAli.Saidi@ARM.com 1879046SAli.Saidi@ARM.com /** The status of this BaseDynInst. Several bits can be set. */ 1889046SAli.Saidi@ARM.com std::bitset<NumStatus> status; 1899046SAli.Saidi@ARM.com 1909046SAli.Saidi@ARM.com /** Whether or not the source register is ready. 1919046SAli.Saidi@ARM.com * @todo: Not sure this should be here vs the derived class. 1929046SAli.Saidi@ARM.com */ 1939046SAli.Saidi@ARM.com std::bitset<MaxInstSrcRegs> _readySrcRegIdx; 1949046SAli.Saidi@ARM.com 1959046SAli.Saidi@ARM.com public: 1969046SAli.Saidi@ARM.com /** The thread this instruction is from. */ 1979046SAli.Saidi@ARM.com ThreadID threadNumber; 1989046SAli.Saidi@ARM.com 1999046SAli.Saidi@ARM.com /** Iterator pointing to this BaseDynInst in the list of all insts. */ 2009046SAli.Saidi@ARM.com ListIt instListIt; 2019046SAli.Saidi@ARM.com 2029046SAli.Saidi@ARM.com ////////////////////// Branch Data /////////////// 2039046SAli.Saidi@ARM.com /** Predicted PC state after this instruction. */ 2049046SAli.Saidi@ARM.com TheISA::PCState predPC; 2059046SAli.Saidi@ARM.com 2069046SAli.Saidi@ARM.com /** The Macroop if one exists */ 2078502Sgblack@eecs.umich.edu StaticInstPtr macroop; 2081060SN/A 2099046SAli.Saidi@ARM.com /** How many source registers are ready. */ 2109046SAli.Saidi@ARM.com uint8_t readyRegs; 2119046SAli.Saidi@ARM.com 2129046SAli.Saidi@ARM.com public: 2139046SAli.Saidi@ARM.com /////////////////////// Load Store Data ////////////////////// 2149046SAli.Saidi@ARM.com /** The effective virtual address (lds & stores only). */ 2159046SAli.Saidi@ARM.com Addr effAddr; 2169046SAli.Saidi@ARM.com 2179046SAli.Saidi@ARM.com /** The effective physical address. */ 2189046SAli.Saidi@ARM.com Addr physEffAddr; 2199046SAli.Saidi@ARM.com 2209046SAli.Saidi@ARM.com /** The memory request flags (from translation). */ 2219046SAli.Saidi@ARM.com unsigned memReqFlags; 2229046SAli.Saidi@ARM.com 2239046SAli.Saidi@ARM.com /** data address space ID, for loads & stores. */ 2249046SAli.Saidi@ARM.com short asid; 2259046SAli.Saidi@ARM.com 2269046SAli.Saidi@ARM.com /** The size of the request */ 2279046SAli.Saidi@ARM.com uint8_t effSize; 2289046SAli.Saidi@ARM.com 2299046SAli.Saidi@ARM.com /** Pointer to the data for the memory access. */ 2309046SAli.Saidi@ARM.com uint8_t *memData; 2319046SAli.Saidi@ARM.com 2329046SAli.Saidi@ARM.com /** Load queue index. */ 2339046SAli.Saidi@ARM.com int16_t lqIdx; 2349046SAli.Saidi@ARM.com 2359046SAli.Saidi@ARM.com /** Store queue index. */ 2369046SAli.Saidi@ARM.com int16_t sqIdx; 2379046SAli.Saidi@ARM.com 2389046SAli.Saidi@ARM.com 2399046SAli.Saidi@ARM.com /////////////////////// TLB Miss ////////////////////// 2409046SAli.Saidi@ARM.com /** 2419046SAli.Saidi@ARM.com * Saved memory requests (needed when the DTB address translation is 2429046SAli.Saidi@ARM.com * delayed due to a hw page table walk). 2439046SAli.Saidi@ARM.com */ 2449046SAli.Saidi@ARM.com RequestPtr savedReq; 2459046SAli.Saidi@ARM.com RequestPtr savedSreqLow; 2469046SAli.Saidi@ARM.com RequestPtr savedSreqHigh; 2479046SAli.Saidi@ARM.com 2489046SAli.Saidi@ARM.com /////////////////////// Checker ////////////////////// 2499046SAli.Saidi@ARM.com // Need a copy of main request pointer to verify on writes. 2509046SAli.Saidi@ARM.com RequestPtr reqToVerify; 2519046SAli.Saidi@ARM.com 2529046SAli.Saidi@ARM.com private: 2539046SAli.Saidi@ARM.com /** Instruction effective address. 2549046SAli.Saidi@ARM.com * @todo: Consider if this is necessary or not. 2559046SAli.Saidi@ARM.com */ 2569046SAli.Saidi@ARM.com Addr instEffAddr; 2579046SAli.Saidi@ARM.com 2589046SAli.Saidi@ARM.com protected: 2599046SAli.Saidi@ARM.com /** Flattened register index of the destination registers of this 2609046SAli.Saidi@ARM.com * instruction. 2619046SAli.Saidi@ARM.com */ 2629046SAli.Saidi@ARM.com TheISA::RegIndex _flatDestRegIdx[TheISA::MaxInstDestRegs]; 2639046SAli.Saidi@ARM.com 2649046SAli.Saidi@ARM.com /** Physical register index of the destination registers of this 2659046SAli.Saidi@ARM.com * instruction. 2669046SAli.Saidi@ARM.com */ 2679046SAli.Saidi@ARM.com PhysRegIndex _destRegIdx[TheISA::MaxInstDestRegs]; 2689046SAli.Saidi@ARM.com 2699046SAli.Saidi@ARM.com /** Physical register index of the source registers of this 2709046SAli.Saidi@ARM.com * instruction. 2719046SAli.Saidi@ARM.com */ 2729046SAli.Saidi@ARM.com PhysRegIndex _srcRegIdx[TheISA::MaxInstSrcRegs]; 2739046SAli.Saidi@ARM.com 2749046SAli.Saidi@ARM.com /** Physical register index of the previous producers of the 2759046SAli.Saidi@ARM.com * architected destinations. 2769046SAli.Saidi@ARM.com */ 2779046SAli.Saidi@ARM.com PhysRegIndex _prevDestRegIdx[TheISA::MaxInstDestRegs]; 2789046SAli.Saidi@ARM.com 2799046SAli.Saidi@ARM.com 2809046SAli.Saidi@ARM.com public: 2819046SAli.Saidi@ARM.com /** Records changes to result? */ 2829046SAli.Saidi@ARM.com void recordResult(bool f) { instFlags[RecordResult] = f; } 2839046SAli.Saidi@ARM.com 2849046SAli.Saidi@ARM.com /** Is the effective virtual address valid. */ 2859046SAli.Saidi@ARM.com bool effAddrValid() const { return instFlags[EffAddrValid]; } 2869046SAli.Saidi@ARM.com 2879046SAli.Saidi@ARM.com /** Whether or not the memory operation is done. */ 2889046SAli.Saidi@ARM.com bool memOpDone() const { return instFlags[MemOpDone]; } 2899046SAli.Saidi@ARM.com void memOpDone(bool f) { instFlags[MemOpDone] = f; } 2909046SAli.Saidi@ARM.com 2919046SAli.Saidi@ARM.com 2921060SN/A //////////////////////////////////////////// 2931060SN/A // 2941060SN/A // INSTRUCTION EXECUTION 2951060SN/A // 2961060SN/A //////////////////////////////////////////// 2971060SN/A 2985358Sgblack@eecs.umich.edu void demapPage(Addr vaddr, uint64_t asn) 2995358Sgblack@eecs.umich.edu { 3005358Sgblack@eecs.umich.edu cpu->demapPage(vaddr, asn); 3015358Sgblack@eecs.umich.edu } 3025358Sgblack@eecs.umich.edu void demapInstPage(Addr vaddr, uint64_t asn) 3035358Sgblack@eecs.umich.edu { 3045358Sgblack@eecs.umich.edu cpu->demapPage(vaddr, asn); 3055358Sgblack@eecs.umich.edu } 3065358Sgblack@eecs.umich.edu void demapDataPage(Addr vaddr, uint64_t asn) 3075358Sgblack@eecs.umich.edu { 3085358Sgblack@eecs.umich.edu cpu->demapPage(vaddr, asn); 3095358Sgblack@eecs.umich.edu } 3105358Sgblack@eecs.umich.edu 3118444Sgblack@eecs.umich.edu Fault readMem(Addr addr, uint8_t *data, unsigned size, unsigned flags); 3127520Sgblack@eecs.umich.edu 3138444Sgblack@eecs.umich.edu Fault writeMem(uint8_t *data, unsigned size, 3148444Sgblack@eecs.umich.edu Addr addr, unsigned flags, uint64_t *res); 3157520Sgblack@eecs.umich.edu 3166974Stjones1@inf.ed.ac.uk /** Splits a request in two if it crosses a dcache block. */ 3176974Stjones1@inf.ed.ac.uk void splitRequest(RequestPtr req, RequestPtr &sreqLow, 3186974Stjones1@inf.ed.ac.uk RequestPtr &sreqHigh); 3196974Stjones1@inf.ed.ac.uk 3206973Stjones1@inf.ed.ac.uk /** Initiate a DTB address translation. */ 3216974Stjones1@inf.ed.ac.uk void initiateTranslation(RequestPtr req, RequestPtr sreqLow, 3226974Stjones1@inf.ed.ac.uk RequestPtr sreqHigh, uint64_t *res, 3236973Stjones1@inf.ed.ac.uk BaseTLB::Mode mode); 3246973Stjones1@inf.ed.ac.uk 3256973Stjones1@inf.ed.ac.uk /** Finish a DTB address translation. */ 3266973Stjones1@inf.ed.ac.uk void finishTranslation(WholeTranslationState *state); 3271060SN/A 3287944SGiacomo.Gabrielli@arm.com /** True if the DTB address translation has started. */ 3299046SAli.Saidi@ARM.com bool translationStarted() const { return instFlags[TranslationStarted]; } 3309046SAli.Saidi@ARM.com void translationStarted(bool f) { instFlags[TranslationStarted] = f; } 3317944SGiacomo.Gabrielli@arm.com 3327944SGiacomo.Gabrielli@arm.com /** True if the DTB address translation has completed. */ 3339046SAli.Saidi@ARM.com bool translationCompleted() const { return instFlags[TranslationCompleted]; } 3349046SAli.Saidi@ARM.com void translationCompleted(bool f) { instFlags[TranslationCompleted] = f; } 3357944SGiacomo.Gabrielli@arm.com 3368545Ssaidi@eecs.umich.edu /** True if this address was found to match a previous load and they issued 3378545Ssaidi@eecs.umich.edu * out of order. If that happend, then it's only a problem if an incoming 3388545Ssaidi@eecs.umich.edu * snoop invalidate modifies the line, in which case we need to squash. 3398545Ssaidi@eecs.umich.edu * If nothing modified the line the order doesn't matter. 3408545Ssaidi@eecs.umich.edu */ 3419046SAli.Saidi@ARM.com bool possibleLoadViolation() const { return instFlags[PossibleLoadViolation]; } 3429046SAli.Saidi@ARM.com void possibleLoadViolation(bool f) { instFlags[PossibleLoadViolation] = f; } 3438545Ssaidi@eecs.umich.edu 3448545Ssaidi@eecs.umich.edu /** True if the address hit a external snoop while sitting in the LSQ. 3458545Ssaidi@eecs.umich.edu * If this is true and a older instruction sees it, this instruction must 3468545Ssaidi@eecs.umich.edu * reexecute 3478545Ssaidi@eecs.umich.edu */ 3489046SAli.Saidi@ARM.com bool hitExternalSnoop() const { return instFlags[HitExternalSnoop]; } 3499046SAli.Saidi@ARM.com void hitExternalSnoop(bool f) { instFlags[HitExternalSnoop] = f; } 3508545Ssaidi@eecs.umich.edu 3517944SGiacomo.Gabrielli@arm.com /** 3527944SGiacomo.Gabrielli@arm.com * Returns true if the DTB address translation is being delayed due to a hw 3537944SGiacomo.Gabrielli@arm.com * page table walk. 3547944SGiacomo.Gabrielli@arm.com */ 3557944SGiacomo.Gabrielli@arm.com bool isTranslationDelayed() const 3567944SGiacomo.Gabrielli@arm.com { 3579046SAli.Saidi@ARM.com return (translationStarted() && !translationCompleted()); 3587944SGiacomo.Gabrielli@arm.com } 3597944SGiacomo.Gabrielli@arm.com 3601060SN/A public: 3612292SN/A#ifdef DEBUG 3622292SN/A void dumpSNList(); 3632292SN/A#endif 3642292SN/A 3653770Sgblack@eecs.umich.edu /** Returns the physical register index of the i'th destination 3663770Sgblack@eecs.umich.edu * register. 3673770Sgblack@eecs.umich.edu */ 3683770Sgblack@eecs.umich.edu PhysRegIndex renamedDestRegIdx(int idx) const 3693770Sgblack@eecs.umich.edu { 3703770Sgblack@eecs.umich.edu return _destRegIdx[idx]; 3713770Sgblack@eecs.umich.edu } 3723770Sgblack@eecs.umich.edu 3733770Sgblack@eecs.umich.edu /** Returns the physical register index of the i'th source register. */ 3743770Sgblack@eecs.umich.edu PhysRegIndex renamedSrcRegIdx(int idx) const 3753770Sgblack@eecs.umich.edu { 3769046SAli.Saidi@ARM.com assert(TheISA::MaxInstSrcRegs > idx); 3773770Sgblack@eecs.umich.edu return _srcRegIdx[idx]; 3783770Sgblack@eecs.umich.edu } 3793770Sgblack@eecs.umich.edu 3803770Sgblack@eecs.umich.edu /** Returns the flattened register index of the i'th destination 3813770Sgblack@eecs.umich.edu * register. 3823770Sgblack@eecs.umich.edu */ 3833770Sgblack@eecs.umich.edu TheISA::RegIndex flattenedDestRegIdx(int idx) const 3843770Sgblack@eecs.umich.edu { 3853770Sgblack@eecs.umich.edu return _flatDestRegIdx[idx]; 3863770Sgblack@eecs.umich.edu } 3873770Sgblack@eecs.umich.edu 3883770Sgblack@eecs.umich.edu /** Returns the physical register index of the previous physical register 3893770Sgblack@eecs.umich.edu * that remapped to the same logical register index. 3903770Sgblack@eecs.umich.edu */ 3913770Sgblack@eecs.umich.edu PhysRegIndex prevDestRegIdx(int idx) const 3923770Sgblack@eecs.umich.edu { 3933770Sgblack@eecs.umich.edu return _prevDestRegIdx[idx]; 3943770Sgblack@eecs.umich.edu } 3953770Sgblack@eecs.umich.edu 3963770Sgblack@eecs.umich.edu /** Renames a destination register to a physical register. Also records 3973770Sgblack@eecs.umich.edu * the previous physical register that the logical register mapped to. 3983770Sgblack@eecs.umich.edu */ 3993770Sgblack@eecs.umich.edu void renameDestReg(int idx, 4003770Sgblack@eecs.umich.edu PhysRegIndex renamed_dest, 4013770Sgblack@eecs.umich.edu PhysRegIndex previous_rename) 4023770Sgblack@eecs.umich.edu { 4033770Sgblack@eecs.umich.edu _destRegIdx[idx] = renamed_dest; 4043770Sgblack@eecs.umich.edu _prevDestRegIdx[idx] = previous_rename; 4053770Sgblack@eecs.umich.edu } 4063770Sgblack@eecs.umich.edu 4073770Sgblack@eecs.umich.edu /** Renames a source logical register to the physical register which 4083770Sgblack@eecs.umich.edu * has/will produce that logical register's result. 4093770Sgblack@eecs.umich.edu * @todo: add in whether or not the source register is ready. 4103770Sgblack@eecs.umich.edu */ 4113770Sgblack@eecs.umich.edu void renameSrcReg(int idx, PhysRegIndex renamed_src) 4123770Sgblack@eecs.umich.edu { 4133770Sgblack@eecs.umich.edu _srcRegIdx[idx] = renamed_src; 4143770Sgblack@eecs.umich.edu } 4153770Sgblack@eecs.umich.edu 4163770Sgblack@eecs.umich.edu /** Flattens a destination architectural register index into a logical 4173770Sgblack@eecs.umich.edu * index. 4183770Sgblack@eecs.umich.edu */ 4193770Sgblack@eecs.umich.edu void flattenDestReg(int idx, TheISA::RegIndex flattened_dest) 4203770Sgblack@eecs.umich.edu { 4213770Sgblack@eecs.umich.edu _flatDestRegIdx[idx] = flattened_dest; 4223770Sgblack@eecs.umich.edu } 4234636Sgblack@eecs.umich.edu /** BaseDynInst constructor given a binary instruction. 4244636Sgblack@eecs.umich.edu * @param staticInst A StaticInstPtr to the underlying instruction. 4257720Sgblack@eecs.umich.edu * @param pc The PC state for the instruction. 4267720Sgblack@eecs.umich.edu * @param predPC The predicted next PC state for the instruction. 4274636Sgblack@eecs.umich.edu * @param seq_num The sequence number of the instruction. 4284636Sgblack@eecs.umich.edu * @param cpu Pointer to the instruction's CPU. 4294636Sgblack@eecs.umich.edu */ 4308502Sgblack@eecs.umich.edu BaseDynInst(StaticInstPtr staticInst, StaticInstPtr macroop, 4318502Sgblack@eecs.umich.edu TheISA::PCState pc, TheISA::PCState predPC, 4328502Sgblack@eecs.umich.edu InstSeqNum seq_num, ImplCPU *cpu); 4333770Sgblack@eecs.umich.edu 4342292SN/A /** BaseDynInst constructor given a StaticInst pointer. 4352292SN/A * @param _staticInst The StaticInst for this BaseDynInst. 4362292SN/A */ 4378502Sgblack@eecs.umich.edu BaseDynInst(StaticInstPtr staticInst, StaticInstPtr macroop); 4381060SN/A 4391060SN/A /** BaseDynInst destructor. */ 4401060SN/A ~BaseDynInst(); 4411060SN/A 4421464SN/A private: 4431684SN/A /** Function to initialize variables in the constructors. */ 4441464SN/A void initVars(); 4451060SN/A 4461464SN/A public: 4471060SN/A /** Dumps out contents of this BaseDynInst. */ 4481060SN/A void dump(); 4491060SN/A 4501060SN/A /** Dumps out contents of this BaseDynInst into given string. */ 4511060SN/A void dump(std::string &outstring); 4521060SN/A 4533326Sktlim@umich.edu /** Read this CPU's ID. */ 4545712Shsul@eecs.umich.edu int cpuId() { return cpu->cpuId(); } 4553326Sktlim@umich.edu 4568832SAli.Saidi@ARM.com /** Read this CPU's data requestor ID */ 4578832SAli.Saidi@ARM.com MasterID masterId() { return cpu->dataMasterId(); } 4588832SAli.Saidi@ARM.com 4595714Shsul@eecs.umich.edu /** Read this context's system-wide ID **/ 4605714Shsul@eecs.umich.edu int contextId() { return thread->contextId(); } 4615714Shsul@eecs.umich.edu 4621060SN/A /** Returns the fault type. */ 4632132SN/A Fault getFault() { return fault; } 4641060SN/A 4651060SN/A /** Checks whether or not this instruction has had its branch target 4661060SN/A * calculated yet. For now it is not utilized and is hacked to be 4671060SN/A * always false. 4682292SN/A * @todo: Actually use this instruction. 4691060SN/A */ 4701060SN/A bool doneTargCalc() { return false; } 4711060SN/A 4727720Sgblack@eecs.umich.edu /** Set the predicted target of this current instruction. */ 4737720Sgblack@eecs.umich.edu void setPredTarg(const TheISA::PCState &_predPC) 4743965Sgblack@eecs.umich.edu { 4757720Sgblack@eecs.umich.edu predPC = _predPC; 4763965Sgblack@eecs.umich.edu } 4772935Sksewell@umich.edu 4787720Sgblack@eecs.umich.edu const TheISA::PCState &readPredTarg() { return predPC; } 4791060SN/A 4803794Sgblack@eecs.umich.edu /** Returns the predicted PC immediately after the branch. */ 4817720Sgblack@eecs.umich.edu Addr predInstAddr() { return predPC.instAddr(); } 4823794Sgblack@eecs.umich.edu 4833794Sgblack@eecs.umich.edu /** Returns the predicted PC two instructions after the branch */ 4847720Sgblack@eecs.umich.edu Addr predNextInstAddr() { return predPC.nextInstAddr(); } 4851060SN/A 4864636Sgblack@eecs.umich.edu /** Returns the predicted micro PC after the branch */ 4877720Sgblack@eecs.umich.edu Addr predMicroPC() { return predPC.microPC(); } 4884636Sgblack@eecs.umich.edu 4891060SN/A /** Returns whether the instruction was predicted taken or not. */ 4903794Sgblack@eecs.umich.edu bool readPredTaken() 4913794Sgblack@eecs.umich.edu { 4929046SAli.Saidi@ARM.com return instFlags[PredTaken]; 4933794Sgblack@eecs.umich.edu } 4943794Sgblack@eecs.umich.edu 4953794Sgblack@eecs.umich.edu void setPredTaken(bool predicted_taken) 4963794Sgblack@eecs.umich.edu { 4979046SAli.Saidi@ARM.com instFlags[PredTaken] = predicted_taken; 4983794Sgblack@eecs.umich.edu } 4991060SN/A 5001060SN/A /** Returns whether the instruction mispredicted. */ 5012935Sksewell@umich.edu bool mispredicted() 5023794Sgblack@eecs.umich.edu { 5037720Sgblack@eecs.umich.edu TheISA::PCState tempPC = pc; 5047720Sgblack@eecs.umich.edu TheISA::advancePC(tempPC, staticInst); 5057720Sgblack@eecs.umich.edu return !(tempPC == predPC); 5063794Sgblack@eecs.umich.edu } 5073794Sgblack@eecs.umich.edu 5081060SN/A // 5091060SN/A // Instruction types. Forward checks to StaticInst object. 5101060SN/A // 5115543Ssaidi@eecs.umich.edu bool isNop() const { return staticInst->isNop(); } 5125543Ssaidi@eecs.umich.edu bool isMemRef() const { return staticInst->isMemRef(); } 5135543Ssaidi@eecs.umich.edu bool isLoad() const { return staticInst->isLoad(); } 5145543Ssaidi@eecs.umich.edu bool isStore() const { return staticInst->isStore(); } 5152336SN/A bool isStoreConditional() const 5162336SN/A { return staticInst->isStoreConditional(); } 5171060SN/A bool isInstPrefetch() const { return staticInst->isInstPrefetch(); } 5181060SN/A bool isDataPrefetch() const { return staticInst->isDataPrefetch(); } 5195543Ssaidi@eecs.umich.edu bool isInteger() const { return staticInst->isInteger(); } 5205543Ssaidi@eecs.umich.edu bool isFloating() const { return staticInst->isFloating(); } 5215543Ssaidi@eecs.umich.edu bool isControl() const { return staticInst->isControl(); } 5225543Ssaidi@eecs.umich.edu bool isCall() const { return staticInst->isCall(); } 5235543Ssaidi@eecs.umich.edu bool isReturn() const { return staticInst->isReturn(); } 5245543Ssaidi@eecs.umich.edu bool isDirectCtrl() const { return staticInst->isDirectCtrl(); } 5251060SN/A bool isIndirectCtrl() const { return staticInst->isIndirectCtrl(); } 5265543Ssaidi@eecs.umich.edu bool isCondCtrl() const { return staticInst->isCondCtrl(); } 5275543Ssaidi@eecs.umich.edu bool isUncondCtrl() const { return staticInst->isUncondCtrl(); } 5282935Sksewell@umich.edu bool isCondDelaySlot() const { return staticInst->isCondDelaySlot(); } 5291060SN/A bool isThreadSync() const { return staticInst->isThreadSync(); } 5301060SN/A bool isSerializing() const { return staticInst->isSerializing(); } 5312292SN/A bool isSerializeBefore() const 5322731Sktlim@umich.edu { return staticInst->isSerializeBefore() || status[SerializeBefore]; } 5332292SN/A bool isSerializeAfter() const 5342731Sktlim@umich.edu { return staticInst->isSerializeAfter() || status[SerializeAfter]; } 5357784SAli.Saidi@ARM.com bool isSquashAfter() const { return staticInst->isSquashAfter(); } 5361060SN/A bool isMemBarrier() const { return staticInst->isMemBarrier(); } 5371060SN/A bool isWriteBarrier() const { return staticInst->isWriteBarrier(); } 5381060SN/A bool isNonSpeculative() const { return staticInst->isNonSpeculative(); } 5392292SN/A bool isQuiesce() const { return staticInst->isQuiesce(); } 5402336SN/A bool isIprAccess() const { return staticInst->isIprAccess(); } 5412308SN/A bool isUnverifiable() const { return staticInst->isUnverifiable(); } 5424828Sgblack@eecs.umich.edu bool isSyscall() const { return staticInst->isSyscall(); } 5434654Sgblack@eecs.umich.edu bool isMacroop() const { return staticInst->isMacroop(); } 5444654Sgblack@eecs.umich.edu bool isMicroop() const { return staticInst->isMicroop(); } 5454636Sgblack@eecs.umich.edu bool isDelayedCommit() const { return staticInst->isDelayedCommit(); } 5464654Sgblack@eecs.umich.edu bool isLastMicroop() const { return staticInst->isLastMicroop(); } 5474654Sgblack@eecs.umich.edu bool isFirstMicroop() const { return staticInst->isFirstMicroop(); } 5484636Sgblack@eecs.umich.edu bool isMicroBranch() const { return staticInst->isMicroBranch(); } 5492292SN/A 5502292SN/A /** Temporarily sets this instruction as a serialize before instruction. */ 5512731Sktlim@umich.edu void setSerializeBefore() { status.set(SerializeBefore); } 5522292SN/A 5532292SN/A /** Clears the serializeBefore part of this instruction. */ 5542731Sktlim@umich.edu void clearSerializeBefore() { status.reset(SerializeBefore); } 5552292SN/A 5562292SN/A /** Checks if this serializeBefore is only temporarily set. */ 5572731Sktlim@umich.edu bool isTempSerializeBefore() { return status[SerializeBefore]; } 5582292SN/A 5592292SN/A /** Temporarily sets this instruction as a serialize after instruction. */ 5602731Sktlim@umich.edu void setSerializeAfter() { status.set(SerializeAfter); } 5612292SN/A 5622292SN/A /** Clears the serializeAfter part of this instruction.*/ 5632731Sktlim@umich.edu void clearSerializeAfter() { status.reset(SerializeAfter); } 5642292SN/A 5652292SN/A /** Checks if this serializeAfter is only temporarily set. */ 5662731Sktlim@umich.edu bool isTempSerializeAfter() { return status[SerializeAfter]; } 5672292SN/A 5682731Sktlim@umich.edu /** Sets the serialization part of this instruction as handled. */ 5692731Sktlim@umich.edu void setSerializeHandled() { status.set(SerializeHandled); } 5702292SN/A 5712292SN/A /** Checks if the serialization part of this instruction has been 5722292SN/A * handled. This does not apply to the temporary serializing 5732292SN/A * state; it only applies to this instruction's own permanent 5742292SN/A * serializing state. 5752292SN/A */ 5762731Sktlim@umich.edu bool isSerializeHandled() { return status[SerializeHandled]; } 5771060SN/A 5781464SN/A /** Returns the opclass of this instruction. */ 5791464SN/A OpClass opClass() const { return staticInst->opClass(); } 5801464SN/A 5811464SN/A /** Returns the branch target address. */ 5827720Sgblack@eecs.umich.edu TheISA::PCState branchTarget() const 5837720Sgblack@eecs.umich.edu { return staticInst->branchTarget(pc); } 5841464SN/A 5852292SN/A /** Returns the number of source registers. */ 5865543Ssaidi@eecs.umich.edu int8_t numSrcRegs() const { return staticInst->numSrcRegs(); } 5871684SN/A 5882292SN/A /** Returns the number of destination registers. */ 5891060SN/A int8_t numDestRegs() const { return staticInst->numDestRegs(); } 5901060SN/A 5911060SN/A // the following are used to track physical register usage 5921060SN/A // for machines with separate int & FP reg files 5931060SN/A int8_t numFPDestRegs() const { return staticInst->numFPDestRegs(); } 5941060SN/A int8_t numIntDestRegs() const { return staticInst->numIntDestRegs(); } 5951060SN/A 5961060SN/A /** Returns the logical register index of the i'th destination register. */ 5972292SN/A RegIndex destRegIdx(int i) const { return staticInst->destRegIdx(i); } 5981060SN/A 5991060SN/A /** Returns the logical register index of the i'th source register. */ 6002292SN/A RegIndex srcRegIdx(int i) const { return staticInst->srcRegIdx(i); } 6011060SN/A 6028733Sgeoffrey.blake@arm.com /** Pops a result off the instResult queue */ 6038733Sgeoffrey.blake@arm.com template <class T> 6048733Sgeoffrey.blake@arm.com void popResult(T& t) 6058733Sgeoffrey.blake@arm.com { 6068733Sgeoffrey.blake@arm.com if (!instResult.empty()) { 6078733Sgeoffrey.blake@arm.com instResult.front().get(t); 6088733Sgeoffrey.blake@arm.com instResult.pop(); 6098733Sgeoffrey.blake@arm.com } 6108733Sgeoffrey.blake@arm.com } 6111684SN/A 6128733Sgeoffrey.blake@arm.com /** Read the most recent result stored by this instruction */ 6138733Sgeoffrey.blake@arm.com template <class T> 6148733Sgeoffrey.blake@arm.com void readResult(T& t) 6158733Sgeoffrey.blake@arm.com { 6168733Sgeoffrey.blake@arm.com instResult.back().get(t); 6178733Sgeoffrey.blake@arm.com } 6181684SN/A 6198733Sgeoffrey.blake@arm.com /** Pushes a result onto the instResult queue */ 6208733Sgeoffrey.blake@arm.com template <class T> 6218733Sgeoffrey.blake@arm.com void setResult(T t) 6228733Sgeoffrey.blake@arm.com { 6239046SAli.Saidi@ARM.com if (instFlags[RecordResult]) { 6248733Sgeoffrey.blake@arm.com Result instRes; 6258733Sgeoffrey.blake@arm.com instRes.set(t); 6268733Sgeoffrey.blake@arm.com instResult.push(instRes); 6278733Sgeoffrey.blake@arm.com } 6288733Sgeoffrey.blake@arm.com } 6291060SN/A 6302702Sktlim@umich.edu /** Records an integer register being set to a value. */ 6313735Sstever@eecs.umich.edu void setIntRegOperand(const StaticInst *si, int idx, uint64_t val) 6321060SN/A { 6338733Sgeoffrey.blake@arm.com setResult<uint64_t>(val); 6341060SN/A } 6351060SN/A 6362702Sktlim@umich.edu /** Records an fp register being set to a value. */ 6373735Sstever@eecs.umich.edu void setFloatRegOperand(const StaticInst *si, int idx, FloatReg val, 6383735Sstever@eecs.umich.edu int width) 6392690Sktlim@umich.edu { 6408733Sgeoffrey.blake@arm.com if (width == 32 || width == 64) { 6418733Sgeoffrey.blake@arm.com setResult<double>(val); 6428733Sgeoffrey.blake@arm.com } else { 6438733Sgeoffrey.blake@arm.com panic("Unsupported width!"); 6443326Sktlim@umich.edu } 6452690Sktlim@umich.edu } 6462690Sktlim@umich.edu 6472702Sktlim@umich.edu /** Records an fp register being set to a value. */ 6483735Sstever@eecs.umich.edu void setFloatRegOperand(const StaticInst *si, int idx, FloatReg val) 6491060SN/A { 6508733Sgeoffrey.blake@arm.com setResult<double>(val); 6512308SN/A } 6521060SN/A 6532702Sktlim@umich.edu /** Records an fp register being set to an integer value. */ 6543735Sstever@eecs.umich.edu void setFloatRegOperandBits(const StaticInst *si, int idx, uint64_t val, 6553735Sstever@eecs.umich.edu int width) 6562308SN/A { 6578733Sgeoffrey.blake@arm.com setResult<uint64_t>(val); 6582308SN/A } 6591060SN/A 6602702Sktlim@umich.edu /** Records an fp register being set to an integer value. */ 6613735Sstever@eecs.umich.edu void setFloatRegOperandBits(const StaticInst *si, int idx, uint64_t val) 6622308SN/A { 6638733Sgeoffrey.blake@arm.com setResult<uint64_t>(val); 6641060SN/A } 6651060SN/A 6662190SN/A /** Records that one of the source registers is ready. */ 6672292SN/A void markSrcRegReady(); 6682190SN/A 6692331SN/A /** Marks a specific register as ready. */ 6702292SN/A void markSrcRegReady(RegIndex src_idx); 6712190SN/A 6721684SN/A /** Returns if a source register is ready. */ 6731464SN/A bool isReadySrcRegIdx(int idx) const 6741464SN/A { 6751464SN/A return this->_readySrcRegIdx[idx]; 6761464SN/A } 6771464SN/A 6781684SN/A /** Sets this instruction as completed. */ 6792731Sktlim@umich.edu void setCompleted() { status.set(Completed); } 6801464SN/A 6812292SN/A /** Returns whether or not this instruction is completed. */ 6822731Sktlim@umich.edu bool isCompleted() const { return status[Completed]; } 6831464SN/A 6842731Sktlim@umich.edu /** Marks the result as ready. */ 6852731Sktlim@umich.edu void setResultReady() { status.set(ResultReady); } 6862308SN/A 6872731Sktlim@umich.edu /** Returns whether or not the result is ready. */ 6882731Sktlim@umich.edu bool isResultReady() const { return status[ResultReady]; } 6892308SN/A 6901060SN/A /** Sets this instruction as ready to issue. */ 6912731Sktlim@umich.edu void setCanIssue() { status.set(CanIssue); } 6921060SN/A 6931060SN/A /** Returns whether or not this instruction is ready to issue. */ 6942731Sktlim@umich.edu bool readyToIssue() const { return status[CanIssue]; } 6951060SN/A 6964032Sktlim@umich.edu /** Clears this instruction being able to issue. */ 6974032Sktlim@umich.edu void clearCanIssue() { status.reset(CanIssue); } 6984032Sktlim@umich.edu 6991060SN/A /** Sets this instruction as issued from the IQ. */ 7002731Sktlim@umich.edu void setIssued() { status.set(Issued); } 7011060SN/A 7021060SN/A /** Returns whether or not this instruction has issued. */ 7032731Sktlim@umich.edu bool isIssued() const { return status[Issued]; } 7041060SN/A 7054032Sktlim@umich.edu /** Clears this instruction as being issued. */ 7064032Sktlim@umich.edu void clearIssued() { status.reset(Issued); } 7074032Sktlim@umich.edu 7081060SN/A /** Sets this instruction as executed. */ 7092731Sktlim@umich.edu void setExecuted() { status.set(Executed); } 7101060SN/A 7111060SN/A /** Returns whether or not this instruction has executed. */ 7122731Sktlim@umich.edu bool isExecuted() const { return status[Executed]; } 7131060SN/A 7141060SN/A /** Sets this instruction as ready to commit. */ 7152731Sktlim@umich.edu void setCanCommit() { status.set(CanCommit); } 7161060SN/A 7171061SN/A /** Clears this instruction as being ready to commit. */ 7182731Sktlim@umich.edu void clearCanCommit() { status.reset(CanCommit); } 7191061SN/A 7201060SN/A /** Returns whether or not this instruction is ready to commit. */ 7212731Sktlim@umich.edu bool readyToCommit() const { return status[CanCommit]; } 7222731Sktlim@umich.edu 7232731Sktlim@umich.edu void setAtCommit() { status.set(AtCommit); } 7242731Sktlim@umich.edu 7252731Sktlim@umich.edu bool isAtCommit() { return status[AtCommit]; } 7261060SN/A 7272292SN/A /** Sets this instruction as committed. */ 7282731Sktlim@umich.edu void setCommitted() { status.set(Committed); } 7292292SN/A 7302292SN/A /** Returns whether or not this instruction is committed. */ 7312731Sktlim@umich.edu bool isCommitted() const { return status[Committed]; } 7322292SN/A 7331060SN/A /** Sets this instruction as squashed. */ 7342731Sktlim@umich.edu void setSquashed() { status.set(Squashed); } 7351060SN/A 7361060SN/A /** Returns whether or not this instruction is squashed. */ 7372731Sktlim@umich.edu bool isSquashed() const { return status[Squashed]; } 7381060SN/A 7392292SN/A //Instruction Queue Entry 7402292SN/A //----------------------- 7412292SN/A /** Sets this instruction as a entry the IQ. */ 7422731Sktlim@umich.edu void setInIQ() { status.set(IqEntry); } 7432292SN/A 7442292SN/A /** Sets this instruction as a entry the IQ. */ 7452731Sktlim@umich.edu void clearInIQ() { status.reset(IqEntry); } 7462731Sktlim@umich.edu 7472731Sktlim@umich.edu /** Returns whether or not this instruction has issued. */ 7482731Sktlim@umich.edu bool isInIQ() const { return status[IqEntry]; } 7492292SN/A 7501060SN/A /** Sets this instruction as squashed in the IQ. */ 7512731Sktlim@umich.edu void setSquashedInIQ() { status.set(SquashedInIQ); status.set(Squashed);} 7521060SN/A 7531060SN/A /** Returns whether or not this instruction is squashed in the IQ. */ 7542731Sktlim@umich.edu bool isSquashedInIQ() const { return status[SquashedInIQ]; } 7552292SN/A 7562292SN/A 7572292SN/A //Load / Store Queue Functions 7582292SN/A //----------------------- 7592292SN/A /** Sets this instruction as a entry the LSQ. */ 7602731Sktlim@umich.edu void setInLSQ() { status.set(LsqEntry); } 7612292SN/A 7622292SN/A /** Sets this instruction as a entry the LSQ. */ 7632731Sktlim@umich.edu void removeInLSQ() { status.reset(LsqEntry); } 7642731Sktlim@umich.edu 7652731Sktlim@umich.edu /** Returns whether or not this instruction is in the LSQ. */ 7662731Sktlim@umich.edu bool isInLSQ() const { return status[LsqEntry]; } 7672292SN/A 7682292SN/A /** Sets this instruction as squashed in the LSQ. */ 7692731Sktlim@umich.edu void setSquashedInLSQ() { status.set(SquashedInLSQ);} 7702292SN/A 7712292SN/A /** Returns whether or not this instruction is squashed in the LSQ. */ 7722731Sktlim@umich.edu bool isSquashedInLSQ() const { return status[SquashedInLSQ]; } 7732292SN/A 7742292SN/A 7752292SN/A //Reorder Buffer Functions 7762292SN/A //----------------------- 7772292SN/A /** Sets this instruction as a entry the ROB. */ 7782731Sktlim@umich.edu void setInROB() { status.set(RobEntry); } 7792292SN/A 7802292SN/A /** Sets this instruction as a entry the ROB. */ 7812731Sktlim@umich.edu void clearInROB() { status.reset(RobEntry); } 7822731Sktlim@umich.edu 7832731Sktlim@umich.edu /** Returns whether or not this instruction is in the ROB. */ 7842731Sktlim@umich.edu bool isInROB() const { return status[RobEntry]; } 7852292SN/A 7862292SN/A /** Sets this instruction as squashed in the ROB. */ 7872731Sktlim@umich.edu void setSquashedInROB() { status.set(SquashedInROB); } 7882292SN/A 7892292SN/A /** Returns whether or not this instruction is squashed in the ROB. */ 7902731Sktlim@umich.edu bool isSquashedInROB() const { return status[SquashedInROB]; } 7912292SN/A 7927720Sgblack@eecs.umich.edu /** Read the PC state of this instruction. */ 7937720Sgblack@eecs.umich.edu const TheISA::PCState pcState() const { return pc; } 7947720Sgblack@eecs.umich.edu 7957720Sgblack@eecs.umich.edu /** Set the PC state of this instruction. */ 7967720Sgblack@eecs.umich.edu const void pcState(const TheISA::PCState &val) { pc = val; } 7977720Sgblack@eecs.umich.edu 7981060SN/A /** Read the PC of this instruction. */ 7997720Sgblack@eecs.umich.edu const Addr instAddr() const { return pc.instAddr(); } 8007720Sgblack@eecs.umich.edu 8017720Sgblack@eecs.umich.edu /** Read the PC of the next instruction. */ 8027720Sgblack@eecs.umich.edu const Addr nextInstAddr() const { return pc.nextInstAddr(); } 8031060SN/A 8044636Sgblack@eecs.umich.edu /**Read the micro PC of this instruction. */ 8057720Sgblack@eecs.umich.edu const Addr microPC() const { return pc.microPC(); } 8064636Sgblack@eecs.umich.edu 8077597Sminkyu.jeong@arm.com bool readPredicate() 8087597Sminkyu.jeong@arm.com { 8099046SAli.Saidi@ARM.com return instFlags[Predicate]; 8107597Sminkyu.jeong@arm.com } 8117597Sminkyu.jeong@arm.com 8127597Sminkyu.jeong@arm.com void setPredicate(bool val) 8137597Sminkyu.jeong@arm.com { 8149046SAli.Saidi@ARM.com instFlags[Predicate] = val; 8157600Sminkyu.jeong@arm.com 8167600Sminkyu.jeong@arm.com if (traceData) { 8177600Sminkyu.jeong@arm.com traceData->setPredicate(val); 8187600Sminkyu.jeong@arm.com } 8197597Sminkyu.jeong@arm.com } 8207597Sminkyu.jeong@arm.com 8212702Sktlim@umich.edu /** Sets the ASID. */ 8222292SN/A void setASID(short addr_space_id) { asid = addr_space_id; } 8232292SN/A 8242702Sktlim@umich.edu /** Sets the thread id. */ 8256221Snate@binkert.org void setTid(ThreadID tid) { threadNumber = tid; } 8262292SN/A 8272731Sktlim@umich.edu /** Sets the pointer to the thread state. */ 8282702Sktlim@umich.edu void setThreadState(ImplState *state) { thread = state; } 8291060SN/A 8302731Sktlim@umich.edu /** Returns the thread context. */ 8312680Sktlim@umich.edu ThreadContext *tcBase() { return thread->getTC(); } 8321464SN/A 8331464SN/A public: 8341684SN/A /** Sets the effective address. */ 8359046SAli.Saidi@ARM.com void setEA(Addr &ea) { instEffAddr = ea; instFlags[EACalcDone] = true; } 8361684SN/A 8371684SN/A /** Returns the effective address. */ 8381464SN/A const Addr &getEA() const { return instEffAddr; } 8391684SN/A 8401684SN/A /** Returns whether or not the eff. addr. calculation has been completed. */ 8419046SAli.Saidi@ARM.com bool doneEACalc() { return instFlags[EACalcDone]; } 8421684SN/A 8431684SN/A /** Returns whether or not the eff. addr. source registers are ready. */ 8441464SN/A bool eaSrcsReady(); 8451681SN/A 8464032Sktlim@umich.edu /** Is this instruction's memory access uncacheable. */ 8479046SAli.Saidi@ARM.com bool uncacheable() { return instFlags[IsUncacheable]; } 8484032Sktlim@umich.edu 8494032Sktlim@umich.edu /** Has this instruction generated a memory request. */ 8509046SAli.Saidi@ARM.com bool hasRequest() { return instFlags[ReqMade]; } 8512292SN/A 8522292SN/A /** Returns iterator to this instruction in the list of all insts. */ 8532292SN/A ListIt &getInstListIt() { return instListIt; } 8542292SN/A 8552292SN/A /** Sets iterator for this instruction in the list of all insts. */ 8562292SN/A void setInstListIt(ListIt _instListIt) { instListIt = _instListIt; } 8573326Sktlim@umich.edu 8583326Sktlim@umich.edu public: 8593326Sktlim@umich.edu /** Returns the number of consecutive store conditional failures. */ 8603326Sktlim@umich.edu unsigned readStCondFailures() 8613326Sktlim@umich.edu { return thread->storeCondFailures; } 8623326Sktlim@umich.edu 8633326Sktlim@umich.edu /** Sets the number of consecutive store conditional failures. */ 8643326Sktlim@umich.edu void setStCondFailures(unsigned sc_failures) 8653326Sktlim@umich.edu { thread->storeCondFailures = sc_failures; } 8661060SN/A}; 8671060SN/A 8681060SN/Atemplate<class Impl> 8697520Sgblack@eecs.umich.eduFault 8708444Sgblack@eecs.umich.eduBaseDynInst<Impl>::readMem(Addr addr, uint8_t *data, 8718444Sgblack@eecs.umich.edu unsigned size, unsigned flags) 8721060SN/A{ 8739046SAli.Saidi@ARM.com instFlags[ReqMade] = true; 8747944SGiacomo.Gabrielli@arm.com Request *req = NULL; 8756974Stjones1@inf.ed.ac.uk Request *sreqLow = NULL; 8766974Stjones1@inf.ed.ac.uk Request *sreqHigh = NULL; 8776974Stjones1@inf.ed.ac.uk 8789046SAli.Saidi@ARM.com if (instFlags[ReqMade] && translationStarted()) { 8797944SGiacomo.Gabrielli@arm.com req = savedReq; 8807944SGiacomo.Gabrielli@arm.com sreqLow = savedSreqLow; 8817944SGiacomo.Gabrielli@arm.com sreqHigh = savedSreqHigh; 8827944SGiacomo.Gabrielli@arm.com } else { 8838832SAli.Saidi@ARM.com req = new Request(asid, addr, size, flags, masterId(), this->pc.instAddr(), 8847944SGiacomo.Gabrielli@arm.com thread->contextId(), threadNumber); 8854032Sktlim@umich.edu 8867944SGiacomo.Gabrielli@arm.com // Only split the request if the ISA supports unaligned accesses. 8877944SGiacomo.Gabrielli@arm.com if (TheISA::HasUnalignedMemAcc) { 8887944SGiacomo.Gabrielli@arm.com splitRequest(req, sreqLow, sreqHigh); 8897944SGiacomo.Gabrielli@arm.com } 8907944SGiacomo.Gabrielli@arm.com initiateTranslation(req, sreqLow, sreqHigh, NULL, BaseTLB::Read); 8911060SN/A } 8921060SN/A 8939046SAli.Saidi@ARM.com if (translationCompleted()) { 8947944SGiacomo.Gabrielli@arm.com if (fault == NoFault) { 8957944SGiacomo.Gabrielli@arm.com effAddr = req->getVaddr(); 8968199SAli.Saidi@ARM.com effSize = size; 8979046SAli.Saidi@ARM.com instFlags[EffAddrValid] = true; 8988887Sgeoffrey.blake@arm.com 8998887Sgeoffrey.blake@arm.com if (cpu->checker) { 9008887Sgeoffrey.blake@arm.com if (reqToVerify != NULL) { 9018887Sgeoffrey.blake@arm.com delete reqToVerify; 9028887Sgeoffrey.blake@arm.com } 9038887Sgeoffrey.blake@arm.com reqToVerify = new Request(*req); 9048733Sgeoffrey.blake@arm.com } 9057944SGiacomo.Gabrielli@arm.com fault = cpu->read(req, sreqLow, sreqHigh, data, lqIdx); 9067944SGiacomo.Gabrielli@arm.com } else { 9077944SGiacomo.Gabrielli@arm.com // Commit will have to clean up whatever happened. Set this 9087944SGiacomo.Gabrielli@arm.com // instruction as executed. 9097944SGiacomo.Gabrielli@arm.com this->setExecuted(); 9107944SGiacomo.Gabrielli@arm.com } 9117944SGiacomo.Gabrielli@arm.com 9127944SGiacomo.Gabrielli@arm.com if (fault != NoFault) { 9137944SGiacomo.Gabrielli@arm.com // Return a fixed value to keep simulation deterministic even 9147944SGiacomo.Gabrielli@arm.com // along misspeculated paths. 9157944SGiacomo.Gabrielli@arm.com if (data) 9167944SGiacomo.Gabrielli@arm.com bzero(data, size); 9177944SGiacomo.Gabrielli@arm.com } 9187577SAli.Saidi@ARM.com } 9197577SAli.Saidi@ARM.com 9201060SN/A if (traceData) { 9211060SN/A traceData->setAddr(addr); 9221060SN/A } 9231060SN/A 9241060SN/A return fault; 9251060SN/A} 9261060SN/A 9271060SN/Atemplate<class Impl> 9287520Sgblack@eecs.umich.eduFault 9298444Sgblack@eecs.umich.eduBaseDynInst<Impl>::writeMem(uint8_t *data, unsigned size, 9308444Sgblack@eecs.umich.edu Addr addr, unsigned flags, uint64_t *res) 9311060SN/A{ 9321060SN/A if (traceData) { 9331060SN/A traceData->setAddr(addr); 9341060SN/A } 9351060SN/A 9369046SAli.Saidi@ARM.com instFlags[ReqMade] = true; 9377944SGiacomo.Gabrielli@arm.com Request *req = NULL; 9386974Stjones1@inf.ed.ac.uk Request *sreqLow = NULL; 9396974Stjones1@inf.ed.ac.uk Request *sreqHigh = NULL; 9406974Stjones1@inf.ed.ac.uk 9419046SAli.Saidi@ARM.com if (instFlags[ReqMade] && translationStarted()) { 9427944SGiacomo.Gabrielli@arm.com req = savedReq; 9437944SGiacomo.Gabrielli@arm.com sreqLow = savedSreqLow; 9447944SGiacomo.Gabrielli@arm.com sreqHigh = savedSreqHigh; 9457944SGiacomo.Gabrielli@arm.com } else { 9468832SAli.Saidi@ARM.com req = new Request(asid, addr, size, flags, masterId(), this->pc.instAddr(), 9477944SGiacomo.Gabrielli@arm.com thread->contextId(), threadNumber); 9487944SGiacomo.Gabrielli@arm.com 9497944SGiacomo.Gabrielli@arm.com // Only split the request if the ISA supports unaligned accesses. 9507944SGiacomo.Gabrielli@arm.com if (TheISA::HasUnalignedMemAcc) { 9517944SGiacomo.Gabrielli@arm.com splitRequest(req, sreqLow, sreqHigh); 9527944SGiacomo.Gabrielli@arm.com } 9537944SGiacomo.Gabrielli@arm.com initiateTranslation(req, sreqLow, sreqHigh, res, BaseTLB::Write); 9546974Stjones1@inf.ed.ac.uk } 9554032Sktlim@umich.edu 9569046SAli.Saidi@ARM.com if (fault == NoFault && translationCompleted()) { 9572678Sktlim@umich.edu effAddr = req->getVaddr(); 9588199SAli.Saidi@ARM.com effSize = size; 9599046SAli.Saidi@ARM.com instFlags[EffAddrValid] = true; 9608887Sgeoffrey.blake@arm.com 9618887Sgeoffrey.blake@arm.com if (cpu->checker) { 9628887Sgeoffrey.blake@arm.com if (reqToVerify != NULL) { 9638887Sgeoffrey.blake@arm.com delete reqToVerify; 9648887Sgeoffrey.blake@arm.com } 9658887Sgeoffrey.blake@arm.com reqToVerify = new Request(*req); 9668733Sgeoffrey.blake@arm.com } 9676975Stjones1@inf.ed.ac.uk fault = cpu->write(req, sreqLow, sreqHigh, data, sqIdx); 9681060SN/A } 9691060SN/A 9701060SN/A return fault; 9711060SN/A} 9721060SN/A 9736973Stjones1@inf.ed.ac.uktemplate<class Impl> 9746973Stjones1@inf.ed.ac.ukinline void 9756974Stjones1@inf.ed.ac.ukBaseDynInst<Impl>::splitRequest(RequestPtr req, RequestPtr &sreqLow, 9766974Stjones1@inf.ed.ac.uk RequestPtr &sreqHigh) 9776974Stjones1@inf.ed.ac.uk{ 9786974Stjones1@inf.ed.ac.uk // Check to see if the request crosses the next level block boundary. 9798850Sandreas.hansson@arm.com unsigned block_size = cpu->getDataPort().peerBlockSize(); 9806974Stjones1@inf.ed.ac.uk Addr addr = req->getVaddr(); 9816974Stjones1@inf.ed.ac.uk Addr split_addr = roundDown(addr + req->getSize() - 1, block_size); 9826974Stjones1@inf.ed.ac.uk assert(split_addr <= addr || split_addr - addr < block_size); 9836974Stjones1@inf.ed.ac.uk 9846974Stjones1@inf.ed.ac.uk // Spans two blocks. 9856974Stjones1@inf.ed.ac.uk if (split_addr > addr) { 9866974Stjones1@inf.ed.ac.uk req->splitOnVaddr(split_addr, sreqLow, sreqHigh); 9876974Stjones1@inf.ed.ac.uk } 9886974Stjones1@inf.ed.ac.uk} 9896974Stjones1@inf.ed.ac.uk 9906974Stjones1@inf.ed.ac.uktemplate<class Impl> 9916974Stjones1@inf.ed.ac.ukinline void 9926974Stjones1@inf.ed.ac.ukBaseDynInst<Impl>::initiateTranslation(RequestPtr req, RequestPtr sreqLow, 9936974Stjones1@inf.ed.ac.uk RequestPtr sreqHigh, uint64_t *res, 9946973Stjones1@inf.ed.ac.uk BaseTLB::Mode mode) 9956973Stjones1@inf.ed.ac.uk{ 9969046SAli.Saidi@ARM.com translationStarted(true); 9977944SGiacomo.Gabrielli@arm.com 9986974Stjones1@inf.ed.ac.uk if (!TheISA::HasUnalignedMemAcc || sreqLow == NULL) { 9996974Stjones1@inf.ed.ac.uk WholeTranslationState *state = 10006974Stjones1@inf.ed.ac.uk new WholeTranslationState(req, NULL, res, mode); 10016974Stjones1@inf.ed.ac.uk 10026974Stjones1@inf.ed.ac.uk // One translation if the request isn't split. 10038486Sgblack@eecs.umich.edu DataTranslation<BaseDynInstPtr> *trans = 10048486Sgblack@eecs.umich.edu new DataTranslation<BaseDynInstPtr>(this, state); 10056974Stjones1@inf.ed.ac.uk cpu->dtb->translateTiming(req, thread->getTC(), trans, mode); 10069046SAli.Saidi@ARM.com if (!translationCompleted()) { 10077944SGiacomo.Gabrielli@arm.com // Save memory requests. 10087944SGiacomo.Gabrielli@arm.com savedReq = state->mainReq; 10097944SGiacomo.Gabrielli@arm.com savedSreqLow = state->sreqLow; 10107944SGiacomo.Gabrielli@arm.com savedSreqHigh = state->sreqHigh; 10117944SGiacomo.Gabrielli@arm.com } 10126974Stjones1@inf.ed.ac.uk } else { 10136974Stjones1@inf.ed.ac.uk WholeTranslationState *state = 10146974Stjones1@inf.ed.ac.uk new WholeTranslationState(req, sreqLow, sreqHigh, NULL, res, mode); 10156974Stjones1@inf.ed.ac.uk 10166974Stjones1@inf.ed.ac.uk // Two translations when the request is split. 10178486Sgblack@eecs.umich.edu DataTranslation<BaseDynInstPtr> *stransLow = 10188486Sgblack@eecs.umich.edu new DataTranslation<BaseDynInstPtr>(this, state, 0); 10198486Sgblack@eecs.umich.edu DataTranslation<BaseDynInstPtr> *stransHigh = 10208486Sgblack@eecs.umich.edu new DataTranslation<BaseDynInstPtr>(this, state, 1); 10216974Stjones1@inf.ed.ac.uk 10226974Stjones1@inf.ed.ac.uk cpu->dtb->translateTiming(sreqLow, thread->getTC(), stransLow, mode); 10236974Stjones1@inf.ed.ac.uk cpu->dtb->translateTiming(sreqHigh, thread->getTC(), stransHigh, mode); 10249046SAli.Saidi@ARM.com if (!translationCompleted()) { 10257944SGiacomo.Gabrielli@arm.com // Save memory requests. 10267944SGiacomo.Gabrielli@arm.com savedReq = state->mainReq; 10277944SGiacomo.Gabrielli@arm.com savedSreqLow = state->sreqLow; 10287944SGiacomo.Gabrielli@arm.com savedSreqHigh = state->sreqHigh; 10297944SGiacomo.Gabrielli@arm.com } 10306974Stjones1@inf.ed.ac.uk } 10316973Stjones1@inf.ed.ac.uk} 10326973Stjones1@inf.ed.ac.uk 10336973Stjones1@inf.ed.ac.uktemplate<class Impl> 10346973Stjones1@inf.ed.ac.ukinline void 10356973Stjones1@inf.ed.ac.ukBaseDynInst<Impl>::finishTranslation(WholeTranslationState *state) 10366973Stjones1@inf.ed.ac.uk{ 10376973Stjones1@inf.ed.ac.uk fault = state->getFault(); 10386973Stjones1@inf.ed.ac.uk 10399046SAli.Saidi@ARM.com instFlags[IsUncacheable] = state->isUncacheable(); 10406973Stjones1@inf.ed.ac.uk 10416973Stjones1@inf.ed.ac.uk if (fault == NoFault) { 10426973Stjones1@inf.ed.ac.uk physEffAddr = state->getPaddr(); 10436973Stjones1@inf.ed.ac.uk memReqFlags = state->getFlags(); 10446973Stjones1@inf.ed.ac.uk 10456973Stjones1@inf.ed.ac.uk if (state->mainReq->isCondSwap()) { 10466973Stjones1@inf.ed.ac.uk assert(state->res); 10476973Stjones1@inf.ed.ac.uk state->mainReq->setExtraData(*state->res); 10486973Stjones1@inf.ed.ac.uk } 10496973Stjones1@inf.ed.ac.uk 10506973Stjones1@inf.ed.ac.uk } else { 10516973Stjones1@inf.ed.ac.uk state->deleteReqs(); 10526973Stjones1@inf.ed.ac.uk } 10536973Stjones1@inf.ed.ac.uk delete state; 10547944SGiacomo.Gabrielli@arm.com 10559046SAli.Saidi@ARM.com translationCompleted(true); 10566973Stjones1@inf.ed.ac.uk} 10576973Stjones1@inf.ed.ac.uk 10581464SN/A#endif // __CPU_BASE_DYN_INST_HH__ 1059