2005-05-27 05:30:12 +02:00
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/*
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2005-06-05 11:16:00 +02:00
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* Copyright (c) 2005 The Regents of The University of Michigan
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2005-05-27 05:30:12 +02:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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2005-02-26 00:00:49 +01:00
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#include "base/misc.hh"
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2005-06-05 02:50:10 +02:00
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#include "cpu/o3/sat_counter.hh"
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2005-02-26 00:00:49 +01:00
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SatCounter::SatCounter()
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2006-05-04 17:36:20 +02:00
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: initialVal(0), counter(0)
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2005-02-26 00:00:49 +01:00
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{
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}
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SatCounter::SatCounter(unsigned bits)
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2006-05-04 17:36:20 +02:00
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: initialVal(0), maxVal((1 << bits) - 1), counter(0)
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2005-02-26 00:00:49 +01:00
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{
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}
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2006-05-04 17:36:20 +02:00
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SatCounter::SatCounter(unsigned bits, uint8_t initial_val)
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: initialVal(initialVal), maxVal((1 << bits) - 1), counter(initial_val)
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2005-02-26 00:00:49 +01:00
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{
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// Check to make sure initial value doesn't exceed the max counter value.
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if (initial_val > maxVal) {
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2006-04-23 00:26:48 +02:00
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fatal("BP: Initial counter value exceeds max size.");
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2005-02-26 00:00:49 +01:00
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}
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}
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void
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SatCounter::setBits(unsigned bits)
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{
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maxVal = (1 << bits) - 1;
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}
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