core.cc revision 7823:dac01f14f20f 
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
39using namespace std;
40
41Tick _curTick = 0;
42
43namespace SimClock {
44/// The simulated frequency of curTick(). (In ticks per second)
45Tick Frequency;
46
47namespace Float {
48double s;
49double ms;
50double us;
51double ns;
52double ps;
53
54double Hz;
55double kHz;
56double MHz;
57double GHZ;
58} // namespace Float
59
60namespace Int {
61Tick s;
62Tick ms;
63Tick us;
64Tick ns;
65Tick ps;
66} // namespace Float
67
68} // namespace SimClock
69
70void
71setClockFrequency(Tick ticksPerSecond)
72{
73    using namespace SimClock;
74    Frequency = ticksPerSecond;
75    Float::s = static_cast<double>(Frequency);
76    Float::ms = Float::s / 1.0e3;
77    Float::us = Float::s / 1.0e6;
78    Float::ns = Float::s / 1.0e9;
79    Float::ps = Float::s / 1.0e12;
80
81    Float::Hz  = 1.0 / Float::s;
82    Float::kHz = 1.0 / Float::ms;
83    Float::MHz = 1.0 / Float::us;
84    Float::GHZ = 1.0 / Float::ns;
85
86    Int::s  = Frequency;
87    Int::ms = Int::s / 1000;
88    Int::us = Int::ms / 1000;
89    Int::ns = Int::us / 1000;
90    Int::ps = Int::ns / 1000;
91
92}
93
94void
95setOutputDir(const string &dir)
96{
97    simout.setDirectory(dir);
98}
99
100/**
101 * Queue of C++ callbacks to invoke on simulator exit.
102 */
103inline CallbackQueue &
104exitCallbacks()
105{
106    static CallbackQueue theQueue;
107    return theQueue;
108}
109
110/**
111 * Register an exit callback.
112 */
113void
114registerExitCallback(Callback *callback)
115{
116    exitCallbacks().add(callback);
117}
118
119/**
120 * Do C++ simulator exit processing.  Exported to SWIG to be invoked
121 * when simulator terminates via Python's atexit mechanism.
122 */
123void
124doExitCleanup()
125{
126    exitCallbacks().process();
127    exitCallbacks().clear();
128
129    cout.flush();
130}
131
132