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/* Copyright (c) 2012 Massachusetts Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "model/electrical/RippleAdder.h"
#include <cmath>
#include "model/PortInfo.h"
#include "model/TransitionInfo.h"
#include "model/EventInfo.h"
#include "model/std_cells/StdCell.h"
#include "model/std_cells/StdCellLib.h"
namespace DSENT
{
RippleAdder::RippleAdder(const String& instance_name_, const TechModel* tech_model_)
: ElectricalModel(instance_name_, tech_model_)
{
initParameters();
initProperties();
}
RippleAdder::~RippleAdder()
{}
void RippleAdder::initParameters()
{
addParameterName("NumberBits");
return;
}
void RippleAdder::initProperties()
{
return;
}
void RippleAdder::constructModel()
{
// Get properties
unsigned int number_bits = (unsigned int) getParameter("NumberBits");
//Construct electrical ports and nets
createInputPort("CI");
createOutputPort("CO");
for(unsigned int i = 0; i < number_bits; ++i)
{
createInputPort("A" + String(i));
createInputPort("B" + String(i));
createOutputPort("S" + String(i));
createNet("C" + String(i));
}
createNet("C" + String(number_bits));
//Create energy, power, and area results
createElectricalResults();
getEventInfo("Idle")->setStaticTransitionInfos();
createElectricalEventResult("Add");
Result* add_event = getEventResult("Add");
// Connect all nets
assign("C0", "CI");
assign("CO", "C" + String(number_bits));
for (unsigned int i = 0; i < number_bits; ++i)
{
String n = (String) i;
StdCell* adder = getTechModel()->getStdCellLib()->createStdCell("ADDF", "ADDF_" + n);
adder->construct();
//Build electrical connectivity
portConnect(adder, "A", "A" + String(i));
portConnect(adder, "B", "B" + String(i));
portConnect(adder, "CI", "C" + String(i));
portConnect(adder, "S", "S" + String(i));
portConnect(adder, "CO", "C" + String(i + 1));
//Add ADDF instance, leakage power, energy, and add event results
addSubInstances(adder, 1.0);
addElectricalSubResults(adder, 1.0);
add_event->addSubResult(adder->getEventResult("ADDF"), "ADDF_" + n, 1.0);
}
return;
}
void RippleAdder::propagateTransitionInfo()
{
unsigned int number_bits = getParameter("NumberBits").toUInt();
TransitionInfo current_trans_CI = getInputPort("CI")->getTransitionInfo();
for(unsigned int i = 0; i < number_bits; ++i)
{
ElectricalModel* adder = (ElectricalModel*)getSubInstance("ADDF_" + String(i));
// Propagate input transition info
propagatePortTransitionInfo(adder, "A", "A" + String(i));
propagatePortTransitionInfo(adder, "B", "B" + String(i));
assignPortTransitionInfo(adder, "CI", current_trans_CI);
adder->use();
// Assign output transition info
propagatePortTransitionInfo("S" + String(i), adder, "S");
current_trans_CI = adder->getOutputPort("CO")->getTransitionInfo();
}
getOutputPort("CO")->setTransitionInfo(current_trans_CI);
return;
}
} // namespace DSENT
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