debug.cc revision 5619 
1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 *          Steve Reinhardt
30 */
31
32#include <Python.h>
33#include <sys/types.h>
34#include <signal.h>
35#include <unistd.h>
36
37#include <string>
38#include <vector>
39
40#include "sim/debug.hh"
41#include "sim/eventq.hh"
42#include "sim/sim_events.hh"
43
44using namespace std;
45
46void
47debug_break()
48{
49#ifndef NDEBUG
50    kill(getpid(), SIGTRAP);
51#else
52    cprintf("debug_break suppressed, compiled with NDEBUG\n");
53#endif
54}
55
56//
57// Debug event: place a breakpoint on the process function and
58// schedule the event to break at a particular cycle
59//
60struct DebugBreakEvent : public Event
61{
62    DebugBreakEvent();
63    void process();     // process event
64    virtual const char *description() const;
65};
66
67//
68// constructor: schedule at specified time
69//
70DebugBreakEvent::DebugBreakEvent()
71    : Event(Debug_Break_Pri)
72{
73    setFlags(AutoDelete);
74}
75
76//
77// handle debug event: set debugger breakpoint on this function
78//
79void
80DebugBreakEvent::process()
81{
82    debug_break();
83}
84
85
86const char *
87DebugBreakEvent::description() const
88{
89    return "debug break";
90}
91
92//
93// handy function to schedule DebugBreakEvent on main event queue
94// (callable from debugger)
95//
96void
97schedBreakCycle(Tick when)
98{
99    mainEventQueue.schedule(new DebugBreakEvent, when);
100    warn("need to stop all queues");
101}
102
103void
104eventqDump()
105{
106    mainEventQueue.dump();
107    warn("need to dump all queues");
108}
109
110void
111py_interact()
112{
113    PyObject *globals;
114    PyObject *locals;
115
116    globals = PyEval_GetGlobals();
117    Py_INCREF(globals);
118    locals = PyDict_New();
119    PyRun_String("import code", Py_file_input, globals, locals);
120    PyRun_String("code.interact(local=globals())", Py_file_input,
121                 globals, locals);
122    Py_DECREF(globals);
123    Py_DECREF(locals);
124}
125
126int remote_gdb_base_port = 7000;
127
128int
129getRemoteGDBPort()
130{
131    return remote_gdb_base_port;
132}
133
134// Set remote GDB base port.  0 means disable remote GDB.
135// Callable from python.
136void
137setRemoteGDBPort(int port)
138{
139    remote_gdb_base_port = port;
140}
141
142