thread_state.hh revision 8799
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 "base/callback.hh" 35#include "base/output.hh" 36#include "cpu/thread_context.hh" 37#include "cpu/thread_state.hh" 38#include "sim/full_system.hh" 39#include "sim/sim_exit.hh" 40 41class EndQuiesceEvent; 42class Event; 43class FunctionalMemory; 44class FunctionProfile; 45class Process; 46class ProfileNode; 47 48/** 49 * Class that has various thread state, such as the status, the 50 * current instruction being processed, whether or not the thread has 51 * a trap pending or is being externally updated, the ThreadContext 52 * pointer, etc. It also handles anything related to a specific 53 * thread's process, such as syscalls and checking valid addresses. 54 */ 55template <class Impl> 56struct O3ThreadState : public ThreadState { 57 typedef ThreadContext::Status Status; 58 typedef typename Impl::O3CPU O3CPU; 59 60 private: 61 /** Pointer to the CPU. */ 62 O3CPU *cpu; 63 public: 64 /** Whether or not the thread is currently in syscall mode, and 65 * thus able to be externally updated without squashing. 66 */ 67 bool inSyscall; 68 69 /** Whether or not the thread is currently waiting on a trap, and 70 * thus able to be externally updated without squashing. 71 */ 72 bool trapPending; 73 74 O3ThreadState(O3CPU *_cpu, int _thread_num, Process *_process) 75 : ThreadState(_cpu, _thread_num, _process), 76 cpu(_cpu), inSyscall(0), trapPending(0) 77 { 78 if (FullSystem) { 79 if (cpu->params()->profile) { 80 profile = new FunctionProfile( 81 cpu->params()->system->kernelSymtab); 82 Callback *cb = 83 new MakeCallback<O3ThreadState, 84 &O3ThreadState::dumpFuncProfile>(this); 85 registerExitCallback(cb); 86 } 87 88 // let's fill with a dummy node for now so we don't get a segfault 89 // on the first cycle when there's no node available. 90 static ProfileNode dummyNode; 91 profileNode = &dummyNode; 92 profilePC = 3; 93 } 94 } 95 96 /** Pointer to the ThreadContext of this thread. */ 97 ThreadContext *tc; 98 99 /** Returns a pointer to the TC of this thread. */ 100 ThreadContext *getTC() { return tc; } 101 102 /** Handles the syscall. */ 103 void syscall(int64_t callnum) { process->syscall(callnum, tc); } 104 105 void dumpFuncProfile() 106 { 107 std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name())); 108 profile->dump(tc, *os); 109 } 110}; 111 112#endif // __CPU_O3_THREAD_STATE_HH__ 113