pc_event.cc revision 1646
14776Sgblack@eecs.umich.edu/* 24776Sgblack@eecs.umich.edu * Copyright (c) 2002-2003 The Regents of The University of Michigan 34776Sgblack@eecs.umich.edu * All rights reserved. 44776Sgblack@eecs.umich.edu * 54776Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 64776Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are 74776Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright 84776Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 94776Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 104776Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 114776Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution; 124776Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 134776Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 144776Sgblack@eecs.umich.edu * this software without specific prior written permission. 154776Sgblack@eecs.umich.edu * 164776Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 174776Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 184776Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 194776Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 204776Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 214776Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 224776Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 234776Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 244776Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 254776Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 264776Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 274776Sgblack@eecs.umich.edu */ 284776Sgblack@eecs.umich.edu 294776Sgblack@eecs.umich.edu#include <algorithm> 304776Sgblack@eecs.umich.edu#include <map> 314776Sgblack@eecs.umich.edu#include <string> 324776Sgblack@eecs.umich.edu#include <utility> 334776Sgblack@eecs.umich.edu 344776Sgblack@eecs.umich.edu#include "base/trace.hh" 354776Sgblack@eecs.umich.edu#include "cpu/base_cpu.hh" 364776Sgblack@eecs.umich.edu#include "cpu/exec_context.hh" 374776Sgblack@eecs.umich.edu#include "cpu/pc_event.hh" 384776Sgblack@eecs.umich.edu#include "sim/debug.hh" 394776Sgblack@eecs.umich.edu#include "sim/universe.hh" 404776Sgblack@eecs.umich.edu 414776Sgblack@eecs.umich.eduusing namespace std; 424776Sgblack@eecs.umich.edu 434776Sgblack@eecs.umich.eduPCEventQueue::PCEventQueue() 444776Sgblack@eecs.umich.edu{} 454776Sgblack@eecs.umich.edu 464776Sgblack@eecs.umich.eduPCEventQueue::~PCEventQueue() 474776Sgblack@eecs.umich.edu{} 484776Sgblack@eecs.umich.edu 494776Sgblack@eecs.umich.edubool 504776Sgblack@eecs.umich.eduPCEventQueue::remove(PCEvent *event) 514776Sgblack@eecs.umich.edu{ 524776Sgblack@eecs.umich.edu int removed = 0; 534776Sgblack@eecs.umich.edu range_t range = equal_range(event); 544776Sgblack@eecs.umich.edu for (iterator i = range.first; i != range.second; ++i) { 554776Sgblack@eecs.umich.edu if (*i == event) { 564776Sgblack@eecs.umich.edu DPRINTF(PCEvent, "PC based event removed at %#x: %s\n", 574776Sgblack@eecs.umich.edu event->pc(), event->descr()); 584776Sgblack@eecs.umich.edu pc_map.erase(i); 594776Sgblack@eecs.umich.edu ++removed; 604776Sgblack@eecs.umich.edu } 614776Sgblack@eecs.umich.edu } 624776Sgblack@eecs.umich.edu 634776Sgblack@eecs.umich.edu return removed > 0; 644776Sgblack@eecs.umich.edu} 654776Sgblack@eecs.umich.edu 664776Sgblack@eecs.umich.edubool 674776Sgblack@eecs.umich.eduPCEventQueue::schedule(PCEvent *event) 684776Sgblack@eecs.umich.edu{ 694776Sgblack@eecs.umich.edu pc_map.push_back(event); 704776Sgblack@eecs.umich.edu sort(pc_map.begin(), pc_map.end(), MapCompare()); 714776Sgblack@eecs.umich.edu 724776Sgblack@eecs.umich.edu DPRINTF(PCEvent, "PC based event scheduled for %#x: %s\n", 734776Sgblack@eecs.umich.edu event->pc(), event->descr()); 744776Sgblack@eecs.umich.edu 754776Sgblack@eecs.umich.edu return true; 764776Sgblack@eecs.umich.edu} 774776Sgblack@eecs.umich.edu 784776Sgblack@eecs.umich.edubool 794776Sgblack@eecs.umich.eduPCEventQueue::doService(ExecContext *xc) 804776Sgblack@eecs.umich.edu{ 814776Sgblack@eecs.umich.edu Addr pc = xc->regs.pc & ~0x3; 824776Sgblack@eecs.umich.edu int serviced = 0; 834776Sgblack@eecs.umich.edu range_t range = equal_range(pc); 844776Sgblack@eecs.umich.edu for (iterator i = range.first; i != range.second; ++i) { 85 // Make sure that the pc wasn't changed as the side effect of 86 // another event. This for example, prevents two invocations 87 // of the SkipFuncEvent. Maybe we should have separate PC 88 // event queues for each processor? 89 if (pc != (xc->regs.pc & ~0x3)) 90 continue; 91 92 DPRINTF(PCEvent, "PC based event serviced at %#x: %s\n", 93 (*i)->pc(), (*i)->descr()); 94 95 (*i)->process(xc); 96 ++serviced; 97 } 98 99 return serviced > 0; 100} 101 102void 103PCEventQueue::dump() const 104{ 105 const_iterator i = pc_map.begin(); 106 const_iterator e = pc_map.end(); 107 108 for (; i != e; ++i) 109 cprintf("%d: event at %#x: %s\n", curTick, (*i)->pc(), 110 (*i)->descr()); 111} 112 113PCEventQueue::range_t 114PCEventQueue::equal_range(Addr pc) 115{ 116 return std::equal_range(pc_map.begin(), pc_map.end(), pc, MapCompare()); 117} 118 119BreakPCEvent::BreakPCEvent(PCEventQueue *q, const std::string &desc, bool del) 120 : PCEvent(q, desc), remove(del) 121{ 122} 123 124void 125BreakPCEvent::process(ExecContext *xc) 126{ 127 StringWrap name(xc->cpu->name() + ".break_event"); 128 DPRINTFN("break event %s triggered\n", descr()); 129 debug_break(); 130 if (remove) 131 delete this; 132} 133 134#ifdef FULL_SYSTEM 135extern "C" 136void 137sched_break_pc_sys(System *sys, Addr addr) 138{ 139 PCEvent *event = new BreakPCEvent(&sys->pcEventQueue, "debug break", true); 140 event->schedule(addr); 141} 142 143extern "C" 144void 145sched_break_pc(Addr addr) 146{ 147 for (vector<System *>::iterator sysi = System::systemList.begin(); 148 sysi != System::systemList.end(); ++sysi) { 149 sched_break_pc_sys(*sysi, addr); 150 } 151 152} 153#endif 154