isa.cc revision 6313
16313Sgblack@eecs.umich.edu/* 26313Sgblack@eecs.umich.edu * Copyright (c) 2009 The Regents of The University of Michigan 36313Sgblack@eecs.umich.edu * All rights reserved. 46313Sgblack@eecs.umich.edu * 56313Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 66313Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are 76313Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright 86313Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 96313Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 106313Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 116313Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution; 126313Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 136313Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 146313Sgblack@eecs.umich.edu * this software without specific prior written permission. 156313Sgblack@eecs.umich.edu * 166313Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176313Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186313Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196313Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206313Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216313Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226313Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236313Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246313Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256313Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266313Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276313Sgblack@eecs.umich.edu * 286313Sgblack@eecs.umich.edu * Authors: Gabe Black 296313Sgblack@eecs.umich.edu */ 306313Sgblack@eecs.umich.edu 316313Sgblack@eecs.umich.edu#include "arch/x86/isa.hh" 326313Sgblack@eecs.umich.edu#include "arch/x86/floatregs.hh" 336313Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 346313Sgblack@eecs.umich.edu 356313Sgblack@eecs.umich.edunamespace X86ISA 366313Sgblack@eecs.umich.edu{ 376313Sgblack@eecs.umich.edu 386313Sgblack@eecs.umich.eduvoid 396313Sgblack@eecs.umich.eduISA::clear() 406313Sgblack@eecs.umich.edu{ 416313Sgblack@eecs.umich.edu miscRegFile.clear(); 426313Sgblack@eecs.umich.edu} 436313Sgblack@eecs.umich.edu 446313Sgblack@eecs.umich.eduMiscReg 456313Sgblack@eecs.umich.eduISA::readMiscRegNoEffect(int miscReg) 466313Sgblack@eecs.umich.edu{ 476313Sgblack@eecs.umich.edu return miscRegFile.readRegNoEffect((MiscRegIndex)miscReg); 486313Sgblack@eecs.umich.edu} 496313Sgblack@eecs.umich.edu 506313Sgblack@eecs.umich.eduMiscReg 516313Sgblack@eecs.umich.eduISA::readMiscReg(int miscReg, ThreadContext *tc) 526313Sgblack@eecs.umich.edu{ 536313Sgblack@eecs.umich.edu return miscRegFile.readReg((MiscRegIndex)miscReg, tc); 546313Sgblack@eecs.umich.edu} 556313Sgblack@eecs.umich.edu 566313Sgblack@eecs.umich.eduvoid 576313Sgblack@eecs.umich.eduISA::setMiscRegNoEffect(int miscReg, const MiscReg val) 586313Sgblack@eecs.umich.edu{ 596313Sgblack@eecs.umich.edu miscRegFile.setRegNoEffect((MiscRegIndex)miscReg, val); 606313Sgblack@eecs.umich.edu} 616313Sgblack@eecs.umich.edu 626313Sgblack@eecs.umich.eduvoid 636313Sgblack@eecs.umich.eduISA::setMiscReg(int miscReg, const MiscReg val, ThreadContext *tc) 646313Sgblack@eecs.umich.edu{ 656313Sgblack@eecs.umich.edu miscRegFile.setReg((MiscRegIndex)miscReg, val, tc); 666313Sgblack@eecs.umich.edu} 676313Sgblack@eecs.umich.edu 686313Sgblack@eecs.umich.eduint 696313Sgblack@eecs.umich.eduISA::flattenIntIndex(int reg) 706313Sgblack@eecs.umich.edu{ 716313Sgblack@eecs.umich.edu //If we need to fold over the index to match byte semantics, do that. 726313Sgblack@eecs.umich.edu //Otherwise, just strip off any extra bits and pass it through. 736313Sgblack@eecs.umich.edu if (reg & (1 << 6)) 746313Sgblack@eecs.umich.edu return (reg & (~(1 << 6) - 0x4)); 756313Sgblack@eecs.umich.edu else 766313Sgblack@eecs.umich.edu return (reg & ~(1 << 6)); 776313Sgblack@eecs.umich.edu} 786313Sgblack@eecs.umich.edu 796313Sgblack@eecs.umich.eduint 806313Sgblack@eecs.umich.eduISA::flattenFloatIndex(int reg) 816313Sgblack@eecs.umich.edu{ 826313Sgblack@eecs.umich.edu if (reg >= NUM_FLOATREGS) { 836313Sgblack@eecs.umich.edu int top = miscRegFile.readRegNoEffect(MISCREG_X87_TOP); 846313Sgblack@eecs.umich.edu reg = FLOATREG_STACK(reg - NUM_FLOATREGS, top); 856313Sgblack@eecs.umich.edu } 866313Sgblack@eecs.umich.edu return reg; 876313Sgblack@eecs.umich.edu} 886313Sgblack@eecs.umich.edu 896313Sgblack@eecs.umich.eduvoid 906313Sgblack@eecs.umich.eduISA::serialize(EventManager *em, std::ostream &os) 916313Sgblack@eecs.umich.edu{ 926313Sgblack@eecs.umich.edu miscRegFile.serialize(os); 936313Sgblack@eecs.umich.edu} 946313Sgblack@eecs.umich.edu 956313Sgblack@eecs.umich.eduvoid 966313Sgblack@eecs.umich.eduISA::unserialize(EventManager *em, Checkpoint *cp, const std::string §ion) 976313Sgblack@eecs.umich.edu{ 986313Sgblack@eecs.umich.edu miscRegFile.unserialize(cp, section); 996313Sgblack@eecs.umich.edu} 1006313Sgblack@eecs.umich.edu 1016313Sgblack@eecs.umich.edu} 102