110 lines
2.9 KiB
C++
110 lines
2.9 KiB
C++
/*
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* Copyright (c) 2003-2005 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 <sys/types.h>
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#include <signal.h>
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#include <unistd.h>
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#include <string>
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#include <vector>
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#include "sim/debug.hh"
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#include "sim/eventq.hh"
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#include "sim/sim_events.hh"
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using namespace std;
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void
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debug_break()
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{
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#ifndef NDEBUG
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kill(getpid(), SIGTRAP);
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#else
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cprintf("debug_break suppressed, compiled with NDEBUG\n");
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#endif
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}
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//
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// Debug event: place a breakpoint on the process function and
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// schedule the event to break at a particular cycle
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//
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class DebugBreakEvent : public Event
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{
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public:
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DebugBreakEvent(EventQueue *q, Tick _when);
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void process(); // process event
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virtual const char *description() const;
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};
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//
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// constructor: schedule at specified time
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//
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DebugBreakEvent::DebugBreakEvent(EventQueue *q, Tick _when)
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: Event(q, Debug_Break_Pri)
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{
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setFlags(AutoDelete);
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schedule(_when);
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}
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//
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// handle debug event: set debugger breakpoint on this function
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//
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void
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DebugBreakEvent::process()
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{
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debug_break();
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}
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const char *
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DebugBreakEvent::description() const
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{
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return "debug break";
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}
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//
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// handy function to schedule DebugBreakEvent on main event queue
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// (callable from debugger)
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//
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void
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schedBreakCycle(Tick when)
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{
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new DebugBreakEvent(&mainEventQueue, when);
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}
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void
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eventqDump()
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{
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mainEventQueue.dump();
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}
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