core.cc revision 9356:b279bad40aa3 
1/*
2 * Copyright (c) 2006 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 <iostream>
33#include <string>
34
35#include "base/callback.hh"
36#include "base/output.hh"
37#include "sim/core.hh"
38#include "sim/eventq.hh"
39
40using namespace std;
41
42namespace SimClock {
43/// The simulated frequency of curTick(). (In ticks per second)
44Tick Frequency;
45
46namespace Float {
47double s;
48double ms;
49double us;
50double ns;
51double ps;
52
53double Hz;
54double kHz;
55double MHz;
56double GHZ;
57} // namespace Float
58
59namespace Int {
60Tick s;
61Tick ms;
62Tick us;
63Tick ns;
64Tick ps;
65} // namespace Float
66
67} // namespace SimClock
68
69void
70setClockFrequency(Tick ticksPerSecond)
71{
72    using namespace SimClock;
73    Frequency = ticksPerSecond;
74    Float::s = static_cast<double>(Frequency);
75    Float::ms = Float::s / 1.0e3;
76    Float::us = Float::s / 1.0e6;
77    Float::ns = Float::s / 1.0e9;
78    Float::ps = Float::s / 1.0e12;
79
80    Float::Hz  = 1.0 / Float::s;
81    Float::kHz = 1.0 / Float::ms;
82    Float::MHz = 1.0 / Float::us;
83    Float::GHZ = 1.0 / Float::ns;
84
85    Int::s  = Frequency;
86    Int::ms = Int::s / 1000;
87    Int::us = Int::ms / 1000;
88    Int::ns = Int::us / 1000;
89    Int::ps = Int::ns / 1000;
90
91}
92
93void
94setOutputDir(const string &dir)
95{
96    simout.setDirectory(dir);
97}
98
99/**
100 * Queue of C++ callbacks to invoke on simulator exit.
101 */
102inline CallbackQueue &
103exitCallbacks()
104{
105    static CallbackQueue theQueue;
106    return theQueue;
107}
108
109/**
110 * Register an exit callback.
111 */
112void
113registerExitCallback(Callback *callback)
114{
115    exitCallbacks().add(callback);
116}
117
118/**
119 * Do C++ simulator exit processing.  Exported to SWIG to be invoked
120 * when simulator terminates via Python's atexit mechanism.
121 */
122void
123doExitCleanup()
124{
125    exitCallbacks().process();
126    exitCallbacks().clear();
127
128    cout.flush();
129}
130
131