core.cc revision 9983 
1/*
2 * Copyright (c) 2006 The Regents of The University of Michigan
3 * Copyright (c) 2013 Advanced Micro Devices, Inc.
4 * Copyright (c) 2013 Mark D. Hill and David A. Wood
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
9 * met: redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer;
11 * redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution;
14 * neither the name of the copyright holders nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * Authors: Nathan Binkert
31 *          Steve Reinhardt
32 */
33
34#include <iostream>
35#include <string>
36
37#include "base/callback.hh"
38#include "base/output.hh"
39#include "sim/core.hh"
40#include "sim/eventq.hh"
41
42using namespace std;
43
44namespace SimClock {
45/// The simulated frequency of curTick(). (In ticks per second)
46Tick Frequency;
47
48namespace Float {
49double s;
50double ms;
51double us;
52double ns;
53double ps;
54
55double Hz;
56double kHz;
57double MHz;
58double GHZ;
59} // namespace Float
60
61namespace Int {
62Tick s;
63Tick ms;
64Tick us;
65Tick ns;
66Tick ps;
67} // namespace Float
68
69} // namespace SimClock
70
71void
72setClockFrequency(Tick ticksPerSecond)
73{
74    using namespace SimClock;
75    Frequency = ticksPerSecond;
76    Float::s = static_cast<double>(Frequency);
77    Float::ms = Float::s / 1.0e3;
78    Float::us = Float::s / 1.0e6;
79    Float::ns = Float::s / 1.0e9;
80    Float::ps = Float::s / 1.0e12;
81
82    Float::Hz  = 1.0 / Float::s;
83    Float::kHz = 1.0 / Float::ms;
84    Float::MHz = 1.0 / Float::us;
85    Float::GHZ = 1.0 / Float::ns;
86
87    Int::s  = Frequency;
88    Int::ms = Int::s / 1000;
89    Int::us = Int::ms / 1000;
90    Int::ns = Int::us / 1000;
91    Int::ps = Int::ns / 1000;
92
93}
94
95void
96setOutputDir(const string &dir)
97{
98    simout.setDirectory(dir);
99}
100
101/**
102 * Queue of C++ callbacks to invoke on simulator exit.
103 */
104inline CallbackQueue &
105exitCallbacks()
106{
107    static CallbackQueue theQueue;
108    return theQueue;
109}
110
111/**
112 * Register an exit callback.
113 */
114void
115registerExitCallback(Callback *callback)
116{
117    exitCallbacks().add(callback);
118}
119
120/**
121 * Do C++ simulator exit processing.  Exported to SWIG to be invoked
122 * when simulator terminates via Python's atexit mechanism.
123 */
124void
125doExitCleanup()
126{
127    exitCallbacks().process();
128    exitCallbacks().clear();
129
130    cout.flush();
131}
132
133