2b7d4bd73d
These can now be built without referring to anything in ThreadContext and so can be built even with the NULL ISA. This means the pcEventQueue can be unconditionally built into the System class. Even though the pcEventQueue is going away, this still makes it possible for System to be a PCEventScope unconditionally. Change-Id: Ia342bb7972b1b5ce95033176d72af4bfa343560f Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/22104 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Tested-by: kokoro <noreply+kokoro@google.com>
146 lines
4.0 KiB
C++
146 lines
4.0 KiB
C++
/*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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* Steve Reinhardt
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*/
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#include "cpu/pc_event.hh"
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#include <algorithm>
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#include <string>
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#include <utility>
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#include "base/debug.hh"
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#include "base/trace.hh"
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#include "debug/PCEvent.hh"
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#include "sim/core.hh"
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#include "sim/system.hh"
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using namespace std;
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PCEventQueue::PCEventQueue()
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{}
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PCEventQueue::~PCEventQueue()
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{}
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bool
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PCEventQueue::remove(PCEvent *event)
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{
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int removed = 0;
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range_t range = equal_range(event);
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iterator i = range.first;
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while (i != range.second && i != pcMap.end()) {
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if (*i == event) {
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DPRINTF(PCEvent, "PC based event removed at %#x: %s\n",
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event->pc(), event->descr());
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i = pcMap.erase(i);
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++removed;
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} else {
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i++;
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}
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}
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return removed > 0;
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}
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bool
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PCEventQueue::schedule(PCEvent *event)
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{
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pcMap.push_back(event);
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sort(pcMap.begin(), pcMap.end(), MapCompare());
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DPRINTF(PCEvent, "PC based event scheduled for %#x: %s\n",
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event->pc(), event->descr());
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return true;
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}
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bool
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PCEventQueue::doService(Addr pc, ThreadContext *tc)
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{
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// Using the raw PC address will fail to break on Alpha PALcode addresses,
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// but that is a rare use case.
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int serviced = 0;
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range_t range = equal_range(pc);
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for (iterator i = range.first; i != range.second; ++i) {
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DPRINTF(PCEvent, "PC based event serviced at %#x: %s\n",
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(*i)->pc(), (*i)->descr());
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(*i)->process(tc);
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++serviced;
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}
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return serviced > 0;
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}
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void
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PCEventQueue::dump() const
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{
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const_iterator i = pcMap.begin();
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const_iterator e = pcMap.end();
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for (; i != e; ++i)
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cprintf("%d: event at %#x: %s\n", curTick(), (*i)->pc(),
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(*i)->descr());
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}
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PCEventQueue::range_t
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PCEventQueue::equal_range(Addr pc)
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{
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return std::equal_range(pcMap.begin(), pcMap.end(), pc, MapCompare());
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}
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BreakPCEvent::BreakPCEvent(PCEventScope *s, const std::string &desc, Addr addr,
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bool del)
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: PCEvent(s, desc, addr), remove(del)
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{
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}
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void
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BreakPCEvent::process(ThreadContext *tc)
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{
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StringWrap name("break_event");
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DPRINTFN("break event %s triggered\n", descr());
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Debug::breakpoint();
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if (remove)
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delete this;
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}
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PanicPCEvent::PanicPCEvent(PCEventScope *s, const std::string &desc, Addr pc)
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: PCEvent(s, desc, pc)
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{
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}
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void
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PanicPCEvent::process(ThreadContext *tc)
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{
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StringWrap name("panic_event");
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panic(descr());
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}
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