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/*
* Copyright (c) 2006 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __CPU_THREAD_STATE_HH__
#define __CPU_THREAD_STATE_HH__
#include "cpu/exec_context.hh"
#if FULL_SYSTEM
class EndQuiesceEvent;
class FunctionProfile;
class ProfileNode;
namespace Kernel {
class Statistics;
};
#else
class FunctionalMemory;
class Process;
#endif
/**
* Struct for holding general thread state that is needed across CPU
* models. This includes things such as pointers to the process,
* memory, quiesce events, and certain stats. This can be expanded
* to hold more thread-specific stats within it.
*/
struct ThreadState {
#if FULL_SYSTEM
ThreadState(int _cpuId, int _tid, FunctionalMemory *_mem)
: cpuId(_cpuId), tid(_tid), mem(_mem), lastActivate(0), lastSuspend(0),
profile(NULL), profileNode(NULL), profilePC(0), quiesceEvent(NULL)
#else
ThreadState(int _cpuId, int _tid, FunctionalMemory *_mem,
Process *_process, short _asid)
: cpuId(_cpuId), tid(_tid), mem(_mem), process(_process), asid(_asid)
#endif
{
funcExeInst = 0;
storeCondFailures = 0;
}
ExecContext::Status status;
int cpuId;
// Index of hardware thread context on the CPU that this represents.
int tid;
Counter numInst;
Stats::Scalar<> numInsts;
Stats::Scalar<> numMemRefs;
// number of simulated loads
Counter numLoad;
Counter startNumLoad;
FunctionalMemory *mem; // functional storage for process address space
#if FULL_SYSTEM
Tick lastActivate;
Tick lastSuspend;
FunctionProfile *profile;
ProfileNode *profileNode;
Addr profilePC;
EndQuiesceEvent *quiesceEvent;
Kernel::Statistics *kernelStats;
#else
Process *process;
// Address space ID. Note that this is used for TIMING cache
// simulation only; all functional memory accesses should use
// one of the FunctionalMemory pointers above.
short asid;
#endif
/**
* Temporary storage to pass the source address from copy_load to
* copy_store.
* @todo Remove this temporary when we have a better way to do it.
*/
Addr copySrcAddr;
/**
* Temp storage for the physical source address of a copy.
* @todo Remove this temporary when we have a better way to do it.
*/
Addr copySrcPhysAddr;
/*
* number of executed instructions, for matching with syscall trace
* points in EIO files.
*/
Counter funcExeInst;
//
// Count failed store conditionals so we can warn of apparent
// application deadlock situations.
unsigned storeCondFailures;
};
#endif // __CPU_THREAD_STATE_HH__
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