2007-08-02 00:53:39 +02:00
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/*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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2007-11-17 03:32:22 +01:00
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* Copyright (c) 2007 MIPS Technologies, Inc.
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2007-08-02 00:53:39 +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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* Authors: Gabe Black
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* Korey Sewell
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2007-11-17 03:32:22 +01:00
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* Jaidev Patwardhan
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2007-08-02 00:53:39 +02:00
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*/
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#include "arch/mips/regfile/int_regfile.hh"
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#include "sim/serialize.hh"
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using namespace MipsISA;
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using namespace std;
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2007-11-13 22:58:16 +01:00
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void
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IntRegFile::clear()
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{
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bzero(®s, sizeof(regs));
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currShadowSet=0;
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}
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void
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IntRegFile::setShadowSet(int css)
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{
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2008-09-10 01:27:17 +02:00
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DPRINTF(MipsPRA, "Setting Shadow Set to :%d (%s)\n", css, currShadowSet);
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2007-11-13 22:58:16 +01:00
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currShadowSet = css;
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}
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IntReg
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IntRegFile::readReg(int intReg)
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{
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2008-09-10 01:27:17 +02:00
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if (intReg < NumIntRegs) {
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// Regular GPR Read
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DPRINTF(MipsPRA, "Reading Reg: %d, CurrShadowSet: %d\n", intReg,
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currShadowSet);
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if (intReg >= NumIntArchRegs * NumShadowRegSets) {
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return regs[intReg + NumIntRegs * currShadowSet];
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} else {
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int index = intReg + NumIntArchRegs * currShadowSet;
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index = index % NumIntArchRegs;
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return regs[index];
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2007-11-13 22:58:16 +01:00
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}
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2008-09-10 01:27:17 +02:00
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} else {
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// Read from shadow GPR .. probably called by RDPGPR
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2007-11-13 22:58:16 +01:00
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return regs[intReg];
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}
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}
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Fault
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IntRegFile::setReg(int intReg, const IntReg &val)
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{
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if (intReg != ZeroReg) {
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2008-09-10 01:27:17 +02:00
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if (intReg < NumIntRegs) {
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if (intReg >= NumIntArchRegs * NumShadowRegSets)
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2007-11-13 22:58:16 +01:00
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regs[intReg] = val;
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2008-09-10 01:27:17 +02:00
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else
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regs[intReg + NumIntRegs * currShadowSet] = val;
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} else {
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2007-11-13 22:58:16 +01:00
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regs[intReg] = val;
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}
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}
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2008-09-10 01:27:17 +02:00
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2007-11-13 22:58:16 +01:00
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return NoFault;
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}
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2007-08-02 00:53:39 +02:00
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void
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IntRegFile::serialize(std::ostream &os)
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{
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SERIALIZE_ARRAY(regs, NumIntRegs);
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}
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void
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IntRegFile::unserialize(Checkpoint *cp, const std::string §ion)
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{
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UNSERIALIZE_ARRAY(regs, NumIntRegs);
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}
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