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/*
* Copyright (c) 2002-2005 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.
*/
#include "cpu/pc_event.hh"
#include <algorithm>
#include <string>
#include <utility>
#include "base/debug.hh"
#include "base/trace.hh"
#include "debug/PCEvent.hh"
#include "sim/cur_tick.hh"
#include "sim/system.hh"
namespace gem5
{
PCEventQueue::PCEventQueue()
{}
PCEventQueue::~PCEventQueue()
{}
bool
PCEventQueue::remove(PCEvent *event)
{
int removed = 0;
range_t range = equal_range(event);
iterator i = range.first;
while (i != range.second && i != pcMap.end()) {
if (*i == event) {
DPRINTF(PCEvent, "PC based event removed at %#x: %s\n",
event->pc(), event->descr());
i = pcMap.erase(i);
++removed;
} else {
i++;
}
}
return removed > 0;
}
bool
PCEventQueue::schedule(PCEvent *event)
{
pcMap.push_back(event);
std::sort(pcMap.begin(), pcMap.end(), MapCompare());
DPRINTF(PCEvent, "PC based event scheduled for %#x: %s\n",
event->pc(), event->descr());
return true;
}
bool
PCEventQueue::doService(Addr pc, ThreadContext *tc)
{
// Using the raw PC address will fail to break on Alpha PALcode addresses,
// but that is a rare use case.
int serviced = 0;
range_t range = equal_range(pc);
for (iterator i = range.first; i != range.second; ++i) {
DPRINTF(PCEvent, "PC based event serviced at %#x: %s\n",
(*i)->pc(), (*i)->descr());
(*i)->process(tc);
++serviced;
}
return serviced > 0;
}
void
PCEventQueue::dump() const
{
const_iterator i = pcMap.begin();
const_iterator e = pcMap.end();
for (; i != e; ++i)
cprintf("%d: event at %#x: %s\n", curTick(), (*i)->pc(),
(*i)->descr());
}
PCEventQueue::range_t
PCEventQueue::equal_range(Addr pc)
{
return std::equal_range(pcMap.begin(), pcMap.end(), pc, MapCompare());
}
BreakPCEvent::BreakPCEvent(PCEventScope *s, const std::string &desc, Addr addr,
bool del)
: PCEvent(s, desc, addr), remove(del)
{
}
void
BreakPCEvent::process(ThreadContext *tc)
{
StringWrap name("break_event");
DPRINTFN("break event %s triggered\n", descr());
debug::breakpoint();
if (remove)
delete this;
}
PanicPCEvent::PanicPCEvent(PCEventScope *s, const std::string &desc, Addr pc)
: PCEvent(s, desc, pc)
{
}
void
PanicPCEvent::process(ThreadContext *tc)
{
StringWrap name("panic_event");
panic(descr());
}
} // namespace gem5