thread_state.hh revision 2680
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 29#ifndef __CPU_THREAD_STATE_HH__ 30#define __CPU_THREAD_STATE_HH__ 31 32#include "cpu/thread_context.hh" 33 34#if !FULL_SYSTEM 35#include "mem/translating_port.hh" 36#endif 37 38#if FULL_SYSTEM 39class EndQuiesceEvent; 40class FunctionProfile; 41class ProfileNode; 42namespace Kernel { 43 class Statistics; 44}; 45#else 46class FunctionalMemory; 47class Process; 48#endif 49 50/** 51 * Struct for holding general thread state that is needed across CPU 52 * models. This includes things such as pointers to the process, 53 * memory, quiesce events, and certain stats. This can be expanded 54 * to hold more thread-specific stats within it. 55 */ 56struct ThreadState { 57#if FULL_SYSTEM 58 ThreadState(int _cpuId, int _tid) 59 : cpuId(_cpuId), tid(_tid), lastActivate(0), lastSuspend(0), 60 profile(NULL), profileNode(NULL), profilePC(0), quiesceEvent(NULL) 61#else 62 ThreadState(int _cpuId, int _tid, MemObject *mem, 63 Process *_process, short _asid) 64 : cpuId(_cpuId), tid(_tid), process(_process), asid(_asid) 65#endif 66 { 67 funcExeInst = 0; 68 storeCondFailures = 0; 69#if !FULL_SYSTEM 70 /* Use this port to for syscall emulation writes to memory. */ 71 Port *mem_port; 72 port = new TranslatingPort(csprintf("%d-funcport", 73 tid), 74 process->pTable, false); 75 mem_port = mem->getPort("functional"); 76 mem_port->setPeer(port); 77 port->setPeer(mem_port); 78#endif 79 } 80 81 ThreadContext::Status status; 82 83 int cpuId; 84 85 // Index of hardware thread context on the CPU that this represents. 86 int tid; 87 88 Counter numInst; 89 Stats::Scalar<> numInsts; 90 Stats::Scalar<> numMemRefs; 91 92 // number of simulated loads 93 Counter numLoad; 94 Counter startNumLoad; 95 96#if FULL_SYSTEM 97 Tick lastActivate; 98 Tick lastSuspend; 99 100 FunctionProfile *profile; 101 ProfileNode *profileNode; 102 Addr profilePC; 103 104 EndQuiesceEvent *quiesceEvent; 105 106 Kernel::Statistics *kernelStats; 107#else 108 TranslatingPort *port; 109 110 Process *process; 111 112 // Address space ID. Note that this is used for TIMING cache 113 // simulation only; all functional memory accesses should use 114 // one of the FunctionalMemory pointers above. 115 short asid; 116 117#endif 118 119 /** 120 * Temporary storage to pass the source address from copy_load to 121 * copy_store. 122 * @todo Remove this temporary when we have a better way to do it. 123 */ 124 Addr copySrcAddr; 125 /** 126 * Temp storage for the physical source address of a copy. 127 * @todo Remove this temporary when we have a better way to do it. 128 */ 129 Addr copySrcPhysAddr; 130 131 /* 132 * number of executed instructions, for matching with syscall trace 133 * points in EIO files. 134 */ 135 Counter funcExeInst; 136 137 // 138 // Count failed store conditionals so we can warn of apparent 139 // application deadlock situations. 140 unsigned storeCondFailures; 141}; 142 143#endif // __CPU_THREAD_STATE_HH__ 144