src/sim/core.cc

   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
  39 using namespace std;
  40
  41 Tick curTick = 0;
  42
  43 namespace Clock {
  44 /// The simulated frequency of curTick. (In ticks per second)
  45 Tick Frequency;
  46
  47 namespace Float {
  48 double s;
  49 double ms;
  50 double us;
  51 double ns;
  52 double ps;
  53
  54 double Hz;
  55 double kHz;
  56 double MHz;
  57 double GHZ;
  58 /* namespace Float */ }
  59
  60 namespace Int {
  61 Tick s;
  62 Tick ms;
  63 Tick us;
  64 Tick ns;
  65 Tick ps;
  66 /* namespace Float */ }
  67
  68 /* namespace Clock */ }
  69
  70 void
  71 setClockFrequency(Tick ticksPerSecond)
  72 {
  73     using namespace Clock;
  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
  94 void
  95 setOutputDir(const string &dir)
  96 {
  97     simout.setDirectory(dir);
  98 }
  99
 100 ostream *outputStream;
 101
 102 void
 103 setOutputFile(const string &file)
 104 {
 105     outputStream = simout.find(file);
 106 }
 107
 108 /**
 109  * Queue of C++ callbacks to invoke on simulator exit.
 110  */
 111 inline CallbackQueue &
 112 exitCallbacks()
 113 {
 114     static CallbackQueue theQueue;
 115     return theQueue;
 116 }
 117
 118 /**
 119  * Register an exit callback.
 120  */
 121 void
 122 registerExitCallback(Callback *callback)
 123 {
 124     exitCallbacks().add(callback);
 125 }
 126
 127 /**
 128  * Do C++ simulator exit processing.  Exported to SWIG to be invoked
 129  * when simulator terminates via Python's atexit mechanism.
 130  */
 131 void
 132 doExitCleanup()
 133 {
 134     exitCallbacks().process();
 135     exitCallbacks().clear();
 136
 137     cout.flush();
 138 }
 139