134 lines
3.5 KiB
C++
134 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2003 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 <sys/types.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "sim/debug.hh"
|
|
#include "sim/eventq.hh"
|
|
#include "sim/param.hh"
|
|
#include "sim/sim_events.hh"
|
|
|
|
using namespace std;
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
debug_break()
|
|
{
|
|
kill(getpid(), SIGTRAP);
|
|
}
|
|
#endif
|
|
|
|
//
|
|
// Debug event: place a breakpoint on the process function and
|
|
// schedule the event to break at a particular cycle
|
|
//
|
|
class DebugBreakEvent : public Event
|
|
{
|
|
public:
|
|
|
|
DebugBreakEvent(EventQueue *q, Tick _when);
|
|
|
|
void process(); // process event
|
|
virtual const char *description();
|
|
};
|
|
|
|
//
|
|
// constructor: schedule at specified time
|
|
//
|
|
DebugBreakEvent::DebugBreakEvent(EventQueue *q, Tick _when)
|
|
: Event(q, Debug_Break_Pri)
|
|
{
|
|
setFlags(AutoDelete);
|
|
schedule(_when);
|
|
}
|
|
|
|
//
|
|
// handle debug event: set debugger breakpoint on this function
|
|
//
|
|
void
|
|
DebugBreakEvent::process()
|
|
{
|
|
debug_break();
|
|
}
|
|
|
|
|
|
const char *
|
|
DebugBreakEvent::description()
|
|
{
|
|
return "debug break";
|
|
}
|
|
|
|
//
|
|
// Parameter context for global debug options
|
|
//
|
|
class DebugContext : public ParamContext
|
|
{
|
|
public:
|
|
DebugContext(const string &_iniSection)
|
|
: ParamContext(_iniSection) {}
|
|
void checkParams();
|
|
};
|
|
|
|
DebugContext debugParams("debug");
|
|
|
|
VectorParam<Tick> break_cycles(&debugParams, "break_cycles",
|
|
"cycle(s) to create breakpoint events");
|
|
|
|
void
|
|
DebugContext::checkParams()
|
|
{
|
|
if (break_cycles.isValid()) {
|
|
vector<Tick> &cycles = break_cycles;
|
|
|
|
vector<Tick>::iterator i = cycles.begin();
|
|
vector<Tick>::iterator end = cycles.end();
|
|
|
|
for (; i < end; ++i)
|
|
new DebugBreakEvent(&mainEventQueue, *i);
|
|
}
|
|
}
|
|
|
|
//
|
|
// handy function to schedule DebugBreakEvent on main event queue
|
|
// (callable from debugger)
|
|
//
|
|
extern "C" void sched_break_cycle(Tick when)
|
|
{
|
|
new DebugBreakEvent(&mainEventQueue, when);
|
|
}
|
|
|
|
extern "C" void eventq_dump()
|
|
{
|
|
mainEventQueue.dump();
|
|
}
|
|
|