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/*
* Copyright (c) 2016-2017, 2020 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
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* modified or unmodified, in source code or in binary form.
*
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* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
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* neither the name of the copyright holders nor the names of its
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* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "sim/power/mathexpr_powermodel.hh"
#include <string>
#include "base/statistics.hh"
#include "params/MathExprPowerModel.hh"
#include "sim/mathexpr.hh"
#include "sim/power/thermal_model.hh"
#include "sim/sim_object.hh"
MathExprPowerModel::MathExprPowerModel(const Params *p)
: PowerModelState(p), dyn_expr(p->dyn), st_expr(p->st)
{
}
void
MathExprPowerModel::startup()
{
for (auto expr: {dyn_expr, st_expr}) {
std::vector<std::string> vars = expr.getVariables();
for (auto var: vars) {
// Automatic variables:
if (var == "temp" || var == "voltage" || var == "clock_period") {
continue;
}
auto *info = Stats::resolve(var);
fatal_if(!info, "Failed to evaluate %s in expression:\n%s\n",
var, expr.toStr());
statsMap[var] = info;
}
}
}
double
MathExprPowerModel::eval(const MathExpr &expr) const
{
return expr.eval(
std::bind(&MathExprPowerModel::getStatValue,
this, std::placeholders::_1)
);
}
double
MathExprPowerModel::getStatValue(const std::string &name) const
{
using namespace Stats;
// Automatic variables:
if (name == "temp") {
return _temp;
} else if (name == "voltage") {
return clocked_object->voltage();
} else if (name=="clock_period") {
return clocked_object->clockPeriod();
}
const auto it = statsMap.find(name);
assert(it != statsMap.cend());
const Info *info = it->second;
// Try to cast the stat, only these are supported right now
auto si = dynamic_cast<const ScalarInfo *>(info);
if (si)
return si->value();
auto fi = dynamic_cast<const FormulaInfo *>(info);
if (fi)
return fi->total();
panic("Unknown stat type!\n");
}
void
MathExprPowerModel::regStats()
{
PowerModelState::regStats();
}
MathExprPowerModel*
MathExprPowerModelParams::create()
{
return new MathExprPowerModel(this);
}