system_events.cc revision 2683
12158SN/A/* 22158SN/A * Copyright (c) 2004-2005 The Regents of The University of Michigan 32158SN/A * All rights reserved. 42158SN/A * 52158SN/A * Redistribution and use in source and binary forms, with or without 62158SN/A * modification, are permitted provided that the following conditions are 72158SN/A * met: redistributions of source code must retain the above copyright 82158SN/A * notice, this list of conditions and the following disclaimer; 92158SN/A * redistributions in binary form must reproduce the above copyright 102158SN/A * notice, this list of conditions and the following disclaimer in the 112158SN/A * documentation and/or other materials provided with the distribution; 122158SN/A * neither the name of the copyright holders nor the names of its 132158SN/A * contributors may be used to endorse or promote products derived from 142158SN/A * this software without specific prior written permission. 152158SN/A * 162158SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172158SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182158SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192158SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202158SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212158SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222158SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232158SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242158SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252158SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262158SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Lisa Hsu 292760Sbinkertn@umich.edu * Nathan Binkert 302158SN/A */ 312158SN/A 323567Sgblack@eecs.umich.edu#include "cpu/base.hh" 333567Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 342432SN/A#include "kern/kernel_stats.hh" 352158SN/A#include "kern/system_events.hh" 363536Sgblack@eecs.umich.edu#include "sim/system.hh" 372215SN/A 382158SN/Ausing namespace TheISA; 392158SN/A 402158SN/Avoid 412521SN/ASkipFuncEvent::process(ThreadContext *tc) 424762Snate@binkert.org{ 432158SN/A Addr newpc = tc->readIntReg(ReturnAddressReg); 442158SN/A 452158SN/A DPRINTF(PCEvent, "skipping %s: pc=%x, newpc=%x\n", description, 462158SN/A tc->readPC(), newpc); 472158SN/A 482158SN/A tc->setPC(newpc); 492158SN/A tc->setNextPC(tc->readPC() + sizeof(TheISA::MachInst)); 502158SN/A/* 512158SN/A BranchPred *bp = tc->getCpuPtr()->getBranchPred(); 522158SN/A if (bp != NULL) { 532158SN/A bp->popRAS(tc->getThreadNum()); 542158SN/A } 552158SN/A*/ 562158SN/A} 572158SN/A 582158SN/A 594762Snate@binkert.orgFnEvent::FnEvent(PCEventQueue *q, const std::string &desc, Addr addr, 602158SN/A Stats::MainBin *bin) 614762Snate@binkert.org : PCEvent(q, desc, addr), _name(desc), mybin(bin) 622158SN/A{ 632158SN/A} 644762Snate@binkert.org 652158SN/Avoid 664762Snate@binkert.orgFnEvent::process(ThreadContext *tc) 672158SN/A{ 682158SN/A if (tc->misspeculating()) 692158SN/A return; 702521SN/A 712521SN/A tc->getSystemPtr()->kernelBinning->call(tc, mybin); 722158SN/A} 732158SN/A 742158SN/Avoid 752158SN/AIdleStartEvent::process(ThreadContext *tc) 762158SN/A{ 772158SN/A if (tc->getKernelStats()) 782158SN/A tc->getKernelStats()->setIdleProcess( 792158SN/A tc->readMiscReg(AlphaISA::IPR_PALtemp23), tc); 802158SN/A remove(); 812158SN/A} 822158SN/A 832158SN/Avoid 842158SN/AInterruptStartEvent::process(ThreadContext *tc) 852158SN/A{ 862158SN/A if (tc->getKernelStats()) 872158SN/A tc->getKernelStats()->mode(Kernel::interrupt, tc); 882158SN/A} 892158SN/A 902158SN/Avoid 912158SN/AInterruptEndEvent::process(ThreadContext *tc) 922158SN/A{ 932158SN/A // We go back to kernel, if we are user, inside the rti 942158SN/A // pal code we will get switched to user because of the ICM write 952158SN/A if (tc->getKernelStats()) 962158SN/A tc->getKernelStats()->mode(Kernel::kernel, tc); 972158SN/A} 982158SN/A