system_events.cc revision 2190
1/* 2 * Copyright (c) 2004-2005 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 29#include "encumbered/cpu/full/cpu.hh" 30#include "kern/kernel_stats.hh" 31 32using namespace TheISA; 33 34void 35SkipFuncEvent::process(ExecContext *xc) 36{ 37 Addr newpc = xc->readIntReg(ReturnAddressReg); 38 39 DPRINTF(PCEvent, "skipping %s: pc=%x, newpc=%x\n", description, 40 xc->readPC(), newpc); 41 42 xc->setPC(newpc); 43 xc->setNextPC(xc->readPC() + sizeof(TheISA::MachInst)); 44 45 BranchPred *bp = xc->getCpuPtr()->getBranchPred(); 46 if (bp != NULL) { 47 bp->popRAS(xc->getThreadNum()); 48 } 49} 50 51 52FnEvent::FnEvent(PCEventQueue *q, const std::string &desc, Addr addr, 53 Stats::MainBin *bin) 54 : PCEvent(q, desc, addr), _name(desc), mybin(bin) 55{ 56} 57 58void 59FnEvent::process(ExecContext *xc) 60{ 61 if (xc->misspeculating()) 62 return; 63 64 xc->getSystemPtr()->kernelBinning->call(xc, mybin); 65} 66 67void 68IdleStartEvent::process(ExecContext *xc) 69{ 70 xc->getCpuPtr()->kernelStats->setIdleProcess( 71 xc->readMiscReg(AlphaISA::IPR_PALtemp23), xc); 72 remove(); 73} 74 75void 76InterruptStartEvent::process(ExecContext *xc) 77{ 78 xc->getCpuPtr()->kernelStats->mode(Kernel::interrupt, xc); 79} 80 81void 82InterruptEndEvent::process(ExecContext *xc) 83{ 84 // We go back to kernel, if we are user, inside the rti 85 // pal code we will get switched to user because of the ICM write 86 xc->getCpuPtr()->kernelStats->mode(Kernel::kernel, xc); 87} 88