thread_state.hh revision 2980
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_O3_THREAD_STATE_HH__ 32#define __CPU_O3_THREAD_STATE_HH__ 33 34#include "cpu/thread_context.hh" 35#include "cpu/thread_state.hh" 36 37class Event; 38class Process; 39 40#if FULL_SYSTEM 41class EndQuiesceEvent; 42class FunctionProfile; 43class ProfileNode; 44#else 45class FunctionalMemory; 46class Process; 47#endif 48 49/** 50 * Class that has various thread state, such as the status, the 51 * current instruction being processed, whether or not the thread has 52 * a trap pending or is being externally updated, the ThreadContext 53 * pointer, etc. It also handles anything related to a specific 54 * thread's process, such as syscalls and checking valid addresses. 55 */ 56template <class Impl> 57struct O3ThreadState : public ThreadState { 58 typedef ThreadContext::Status Status; 59 typedef typename Impl::O3CPU O3CPU; 60 61 private: 62 /** Pointer to the CPU. */ 63 O3CPU *cpu; 64 public: 65 /** Whether or not the thread is currently in syscall mode, and 66 * thus able to be externally updated without squashing. 67 */ 68 bool inSyscall; 69 70 /** Whether or not the thread is currently waiting on a trap, and 71 * thus able to be externally updated without squashing. 72 */ 73 bool trapPending; 74 75#if FULL_SYSTEM 76 O3ThreadState(O3CPU *_cpu, int _thread_num) 77 : ThreadState(-1, _thread_num), 78 inSyscall(0), trapPending(0) 79 { } 80#else 81 O3ThreadState(O3CPU *_cpu, int _thread_num, Process *_process, int _asid, 82 MemObject *mem) 83 : ThreadState(-1, _thread_num, _process, _asid, mem), 84 cpu(_cpu), inSyscall(0), trapPending(0) 85 { } 86#endif 87 88 /** Pointer to the ThreadContext of this thread. */ 89 ThreadContext *tc; 90 91 /** Returns a pointer to the TC of this thread. */ 92 ThreadContext *getTC() { return tc; } 93 94#if !FULL_SYSTEM 95 /** Handles the syscall. */ 96 void syscall(int64_t callnum) { process->syscall(callnum, tc); } 97#endif 98}; 99 100#endif // __CPU_O3_THREAD_STATE_HH__ 101