core.cc

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· CC 代码 · 共 140 行

/*
 * Copyright (c) 2006
 * The Regents of The University of Michigan
 * All Rights Reserved
 *
 * This code is part of the M5 simulator.
 *
 * Permission is granted to use, copy, create derivative works and
 * redistribute this software and such derivative works for any
 * purpose, so long as the copyright notice above, this grant of
 * permission, and the disclaimer below appear in all copies made; and
 * so long as the name of The University of Michigan is not used in
 * any advertising or publicity pertaining to the use or distribution
 * of this software without specific, written prior authorization.
 *
 * THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE
 * UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND
 * WITHOUT WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE. THE REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE
 * LIABLE FOR ANY DAMAGES, INCLUDING DIRECT, SPECIAL, INDIRECT,
 * INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
 * IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGES.
 *
 * Authors: Nathan L. Binkert
 *          Steven K. Reinhardt
 */

#include <iostream>
#include <string>

#include "base/callback.hh"
#include "base/output.hh"
#include "sim/core.hh"

using namespace std;

Tick curTick = 0;

namespace Clock {
/// The simulated frequency of curTick. (In ticks per second)
Tick Frequency;

namespace Float {
double s;
double ms;
double us;
double ns;
double ps;

double Hz;
double kHz;
double MHz;
double GHZ;
/* namespace Float */ }

namespace Int {
Tick s;
Tick ms;
Tick us;
Tick ns;
Tick ps;
/* namespace Float */ }

/* namespace Clock */ }

void
setClockFrequency(Tick ticksPerSecond)
{
    using namespace Clock;
    Frequency = ticksPerSecond;
    Float::s = static_cast<double>(Frequency);
    Float::ms = Float::s / 1.0e3;
    Float::us = Float::s / 1.0e6;
    Float::ns = Float::s / 1.0e9;
    Float::ps = Float::s / 1.0e12;

    Float::Hz  = 1.0 / Float::s;
    Float::kHz = 1.0 / Float::ms;
    Float::MHz = 1.0 / Float::us;
    Float::GHZ = 1.0 / Float::ns;

    Int::s  = Frequency;
    Int::ms = Int::s / 1000;
    Int::us = Int::ms / 1000;
    Int::ns = Int::us / 1000;
    Int::ps = Int::ns / 1000;

}

void
setOutputDir(const string &dir)
{
    simout.setDirectory(dir);
}

ostream *outputStream;

void
setOutputFile(const string &file)
{
    outputStream = simout.find(file);
}

/**
 * Queue of C++ callbacks to invoke on simulator exit.
 */
inline CallbackQueue &
exitCallbacks()
{
    static CallbackQueue theQueue;
    return theQueue;
}

/**
 * Register an exit callback.
 */
void
registerExitCallback(Callback *callback)
{
    exitCallbacks().add(callback);
}

/**
 * Do C++ simulator exit processing.  Exported to SWIG to be invoked
 * when simulator terminates via Python's atexit mechanism.
 */
void
doExitCleanup()
{
    exitCallbacks().process();
    exitCallbacks().clear();

    cout.flush();
}