thread_state.hh revision 3486
1/* 2 * Copyright (c) 2006 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Kevin Lim 29 */ 30 31#ifndef __CPU_THREAD_STATE_HH__ 32#define __CPU_THREAD_STATE_HH__ 33 34#include "arch/types.hh" 35#include "cpu/profile.hh" 36#include "cpu/thread_context.hh" 37 38#if !FULL_SYSTEM 39#include "mem/mem_object.hh" 40#include "sim/process.hh" 41#endif 42 43#if FULL_SYSTEM 44class EndQuiesceEvent; 45class FunctionProfile; 46class ProfileNode; 47namespace Kernel { 48 class Statistics; 49}; 50#endif 51 52class BaseCPU; 53class Checkpoint; 54class Port; 55class TranslatingPort; 56 57/** 58 * Struct for holding general thread state that is needed across CPU 59 * models. This includes things such as pointers to the process, 60 * memory, quiesce events, and certain stats. This can be expanded 61 * to hold more thread-specific stats within it. 62 */ 63struct ThreadState { 64 typedef ThreadContext::Status Status; 65 66#if FULL_SYSTEM 67 ThreadState(BaseCPU *cpu, int _cpuId, int _tid); 68#else 69 ThreadState(BaseCPU *cpu, int _cpuId, int _tid, Process *_process, 70 short _asid); 71#endif 72 73 ~ThreadState(); 74 75 void serialize(std::ostream &os); 76 77 void unserialize(Checkpoint *cp, const std::string §ion); 78 79 void setCpuId(int id) { cpuId = id; } 80 81 int readCpuId() { return cpuId; } 82 83 void setTid(int id) { tid = id; } 84 85 int readTid() { return tid; } 86 87 Tick readLastActivate() { return lastActivate; } 88 89 Tick readLastSuspend() { return lastSuspend; } 90 91#if FULL_SYSTEM 92 void dumpFuncProfile(); 93 94 EndQuiesceEvent *getQuiesceEvent() { return quiesceEvent; } 95 96 void profileClear(); 97 98 void profileSample(); 99 100 Kernel::Statistics *getKernelStats() { return kernelStats; } 101 102 FunctionalPort *getPhysPort() { return physPort; } 103 104 void setPhysPort(FunctionalPort *port) { physPort = port; } 105 106 VirtualPort *getVirtPort(ThreadContext *tc = NULL) { return virtPort; } 107 108 void setVirtPort(VirtualPort *port) { virtPort = port; } 109#else 110 Process *getProcessPtr() { return process; } 111 112 TranslatingPort *getMemPort(); 113 114 void setMemPort(TranslatingPort *_port) { port = _port; } 115 116 int getInstAsid() { return asid; } 117 int getDataAsid() { return asid; } 118#endif 119 120 /** Sets the current instruction being committed. */ 121 void setInst(TheISA::MachInst _inst) { inst = _inst; } 122 123 /** Returns the current instruction being committed. */ 124 TheISA::MachInst getInst() { return inst; } 125 126 /** Reads the number of instructions functionally executed and 127 * committed. 128 */ 129 Counter readFuncExeInst() { return funcExeInst; } 130 131 /** Sets the total number of instructions functionally executed 132 * and committed. 133 */ 134 void setFuncExeInst(Counter new_val) { funcExeInst = new_val; } 135 136 /** Returns the status of this thread. */ 137 Status status() const { return _status; } 138 139 /** Sets the status of this thread. */ 140 void setStatus(Status new_status) { _status = new_status; } 141 142 protected: 143 /** Gets a functional port from the memory object that's connected 144 * to the CPU. */ 145 Port *getMemFuncPort(); 146 147 public: 148 /** Number of instructions committed. */ 149 Counter numInst; 150 /** Stat for number instructions committed. */ 151 Stats::Scalar<> numInsts; 152 /** Stat for number of memory references. */ 153 Stats::Scalar<> numMemRefs; 154 155 /** Number of simulated loads, used for tracking events based on 156 * the number of loads committed. 157 */ 158 Counter numLoad; 159 160 /** The number of simulated loads committed prior to this run. */ 161 Counter startNumLoad; 162 163 protected: 164 ThreadContext::Status _status; 165 166 // Pointer to the base CPU. 167 BaseCPU *baseCpu; 168 169 // ID of this context w.r.t. the System or Process object to which 170 // it belongs. For full-system mode, this is the system CPU ID. 171 int cpuId; 172 173 // Index of hardware thread context on the CPU that this represents. 174 int tid; 175 176 public: 177 /** Last time activate was called on this thread. */ 178 Tick lastActivate; 179 180 /** Last time suspend was called on this thread. */ 181 Tick lastSuspend; 182 183#if FULL_SYSTEM 184 public: 185 FunctionProfile *profile; 186 ProfileNode *profileNode; 187 Addr profilePC; 188 EndQuiesceEvent *quiesceEvent; 189 190 Kernel::Statistics *kernelStats; 191 protected: 192 /** A functional port outgoing only for functional accesses to physical 193 * addresses.*/ 194 FunctionalPort *physPort; 195 196 /** A functional port, outgoing only, for functional accesse to virtual 197 * addresses. That doen't require execution context information */ 198 VirtualPort *virtPort; 199#else 200 TranslatingPort *port; 201 202 Process *process; 203 204 // Address space ID. Note that this is used for TIMING cache 205 // simulation only; all functional memory accesses should use 206 // one of the FunctionalMemory pointers above. 207 short asid; 208 209#endif 210 211 /** Current instruction the thread is committing. Only set and 212 * used for DTB faults currently. 213 */ 214 TheISA::MachInst inst; 215 216 /** The current microcode pc for the currently executing macro 217 * operation. 218 */ 219 MicroPC microPC; 220 221 /** The next microcode pc for the currently executing macro 222 * operation. 223 */ 224 MicroPC nextMicroPC; 225 226 public: 227 /** 228 * Temporary storage to pass the source address from copy_load to 229 * copy_store. 230 * @todo Remove this temporary when we have a better way to do it. 231 */ 232 Addr copySrcAddr; 233 /** 234 * Temp storage for the physical source address of a copy. 235 * @todo Remove this temporary when we have a better way to do it. 236 */ 237 Addr copySrcPhysAddr; 238 239 /* 240 * number of executed instructions, for matching with syscall trace 241 * points in EIO files. 242 */ 243 Counter funcExeInst; 244 245 // 246 // Count failed store conditionals so we can warn of apparent 247 // application deadlock situations. 248 unsigned storeCondFailures; 249}; 250 251#endif // __CPU_THREAD_STATE_HH__ 252