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/*
* Copyright (c) 2004-2006 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.
*
* Authors: Kevin Lim
* Korey Sewell
*/
#include "cpu/o3/thread_context.hh"
template <class Impl>
class AlphaTC : public O3ThreadContext<Impl>
{
public:
#if FULL_SYSTEM
/** Returns a pointer to the ITB. */
virtual AlphaITB *getITBPtr() { return this->cpu->itb; }
/** Returns a pointer to the DTB. */
virtual AlphaDTB *getDTBPtr() { return this->cpu->dtb; }
/** Returns pointer to the quiesce event. */
virtual EndQuiesceEvent *getQuiesceEvent()
{
return this->thread->quiesceEvent;
}
/** Returns if the thread is currently in PAL mode, based on
* the PC's value. */
virtual bool inPalMode()
{ return TheISA::PcPAL(this->cpu->readPC(this->thread->readTid())); }
#endif
virtual uint64_t readNextNPC()
{
panic("Alpha has no NextNPC!");
return 0;
}
virtual void setNextNPC(uint64_t val)
{
panic("Alpha has no NextNPC!");
}
virtual void changeRegFileContext(TheISA::RegFile::ContextParam param,
TheISA::RegFile::ContextVal val)
{ panic("Not supported on Alpha!"); }
/** This function exits the thread context in the CPU and returns
* 1 if the CPU has no more active threads (meaning it's OK to exit);
* Used in syscall-emulation mode when a thread executes the 'exit'
* syscall.
*/
virtual int exit()
{
this->deallocate();
// If there are still threads executing in the system
if (this->cpu->numActiveThreads())
return 0; // don't exit simulation
else
return 1; // exit simulation
}
};
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