102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
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/*
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* Copyright (c) 2009 The Regents of The University of Michigan
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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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*/
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#include "arch/x86/isa.hh"
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#include "arch/x86/floatregs.hh"
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#include "cpu/thread_context.hh"
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namespace X86ISA
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{
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void
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ISA::clear()
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{
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miscRegFile.clear();
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}
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MiscReg
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ISA::readMiscRegNoEffect(int miscReg)
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{
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return miscRegFile.readRegNoEffect((MiscRegIndex)miscReg);
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}
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MiscReg
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ISA::readMiscReg(int miscReg, ThreadContext *tc)
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{
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return miscRegFile.readReg((MiscRegIndex)miscReg, tc);
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}
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void
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ISA::setMiscRegNoEffect(int miscReg, const MiscReg val)
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{
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miscRegFile.setRegNoEffect((MiscRegIndex)miscReg, val);
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}
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void
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ISA::setMiscReg(int miscReg, const MiscReg val, ThreadContext *tc)
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{
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miscRegFile.setReg((MiscRegIndex)miscReg, val, tc);
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}
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int
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ISA::flattenIntIndex(int reg)
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{
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//If we need to fold over the index to match byte semantics, do that.
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//Otherwise, just strip off any extra bits and pass it through.
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if (reg & (1 << 6))
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return (reg & (~(1 << 6) - 0x4));
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else
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return (reg & ~(1 << 6));
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}
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int
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ISA::flattenFloatIndex(int reg)
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{
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if (reg >= NUM_FLOATREGS) {
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int top = miscRegFile.readRegNoEffect(MISCREG_X87_TOP);
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reg = FLOATREG_STACK(reg - NUM_FLOATREGS, top);
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}
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return reg;
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}
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void
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ISA::serialize(EventManager *em, std::ostream &os)
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{
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miscRegFile.serialize(os);
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}
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void
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ISA::unserialize(EventManager *em, Checkpoint *cp, const std::string §ion)
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{
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miscRegFile.unserialize(cp, section);
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}
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}
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