145 lines
2.8 KiB
C++
145 lines
2.8 KiB
C++
// OpenSTA, Static Timing Analyzer
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// Copyright (c) 2020, Parallax Software, Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include "UnitDelayCalc.hh"
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#include "Units.hh"
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namespace sta {
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ArcDelayCalc *
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makeUnitDelayCalc(StaState *sta)
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{
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return new UnitDelayCalc(sta);
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}
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UnitDelayCalc::UnitDelayCalc(StaState *sta) :
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ArcDelayCalc(sta)
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{
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}
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ArcDelayCalc *
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UnitDelayCalc::copy()
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{
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return new UnitDelayCalc(this);
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}
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Parasitic *
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UnitDelayCalc::findParasitic(const Pin *,
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const RiseFall *,
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const DcalcAnalysisPt *)
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{
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return nullptr;
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}
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void
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UnitDelayCalc::inputPortDelay(const Pin *,
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float,
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const RiseFall *,
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Parasitic *,
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const DcalcAnalysisPt *)
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{
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}
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void
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UnitDelayCalc::gateDelay(const LibertyCell *,
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TimingArc *,
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const Slew &,
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float,
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Parasitic *,
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float,
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const Pvt *, const DcalcAnalysisPt *,
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// Return values.
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ArcDelay &gate_delay, Slew &drvr_slew)
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{
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gate_delay = units_->timeUnit()->scale();
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drvr_slew = 0.0;
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}
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void
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UnitDelayCalc::loadDelay(const Pin *,
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ArcDelay &wire_delay,
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Slew &load_slew)
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{
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wire_delay = 0.0;
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load_slew = 0.0;
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}
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float
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UnitDelayCalc::ceff(const LibertyCell *,
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TimingArc *,
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const Slew &,
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float,
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Parasitic *,
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float,
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const Pvt *,
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const DcalcAnalysisPt *)
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{
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return 0.0;
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}
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void
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UnitDelayCalc::reportGateDelay(const LibertyCell *,
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TimingArc *,
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const Slew &,
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float,
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Parasitic *,
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float,
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const Pvt *,
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const DcalcAnalysisPt *,
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int,
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string *result)
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{
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*result += "Delay = 1.0\n";
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*result += "Slew = 0.0\n";
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}
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void
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UnitDelayCalc::checkDelay(const LibertyCell *,
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TimingArc *,
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const Slew &,
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const Slew &,
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float,
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const Pvt *,
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const DcalcAnalysisPt *,
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// Return values.
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ArcDelay &margin)
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{
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margin = units_->timeUnit()->scale();
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}
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void
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UnitDelayCalc::reportCheckDelay(const LibertyCell *,
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TimingArc *,
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const Slew &,
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const char *,
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const Slew &,
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float,
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const Pvt *,
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const DcalcAnalysisPt *,
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int,
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string *result)
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{
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*result += "Check = 1.0\n";
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}
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void
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UnitDelayCalc::finishDrvrPin()
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{
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}
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} // namespace
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