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/sparc/isa.hh" 326313Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 336313Sgblack@eecs.umich.edu 346313Sgblack@eecs.umich.edunamespace SparcISA 356313Sgblack@eecs.umich.edu{ 366313Sgblack@eecs.umich.edu 376313Sgblack@eecs.umich.eduvoid 386313Sgblack@eecs.umich.eduISA::clear() 396313Sgblack@eecs.umich.edu{ 406313Sgblack@eecs.umich.edu miscRegFile.clear(); 416313Sgblack@eecs.umich.edu} 426313Sgblack@eecs.umich.edu 436313Sgblack@eecs.umich.eduMiscReg 446313Sgblack@eecs.umich.eduISA::readMiscRegNoEffect(int miscReg) 456313Sgblack@eecs.umich.edu{ 466313Sgblack@eecs.umich.edu return miscRegFile.readRegNoEffect((MiscRegIndex)miscReg); 476313Sgblack@eecs.umich.edu} 486313Sgblack@eecs.umich.edu 496313Sgblack@eecs.umich.eduMiscReg 506313Sgblack@eecs.umich.eduISA::readMiscReg(int miscReg, ThreadContext *tc) 516313Sgblack@eecs.umich.edu{ 526313Sgblack@eecs.umich.edu return miscRegFile.readReg((MiscRegIndex)miscReg, tc); 536313Sgblack@eecs.umich.edu} 546313Sgblack@eecs.umich.edu 556313Sgblack@eecs.umich.eduvoid 566313Sgblack@eecs.umich.eduISA::setMiscRegNoEffect(int miscReg, const MiscReg val) 576313Sgblack@eecs.umich.edu{ 586313Sgblack@eecs.umich.edu miscRegFile.setRegNoEffect((MiscRegIndex)miscReg, val); 596313Sgblack@eecs.umich.edu} 606313Sgblack@eecs.umich.edu 616313Sgblack@eecs.umich.eduvoid 626313Sgblack@eecs.umich.eduISA::setMiscReg(int miscReg, const MiscReg val, ThreadContext *tc) 636313Sgblack@eecs.umich.edu{ 646313Sgblack@eecs.umich.edu miscRegFile.setReg((MiscRegIndex)miscReg, val, tc); 656313Sgblack@eecs.umich.edu} 666313Sgblack@eecs.umich.edu 676313Sgblack@eecs.umich.eduint 686313Sgblack@eecs.umich.eduISA::flattenIntIndex(int reg) 696313Sgblack@eecs.umich.edu{ 706313Sgblack@eecs.umich.edu int gl = miscRegFile.readRegNoEffect(MISCREG_GL); 716313Sgblack@eecs.umich.edu int cwp = miscRegFile.readRegNoEffect(MISCREG_CWP); 726313Sgblack@eecs.umich.edu //DPRINTF(RegisterWindows, "Global Level = %d, Current Window Pointer = %d\n", gl, cwp); 736313Sgblack@eecs.umich.edu int newReg; 746313Sgblack@eecs.umich.edu //The total number of global registers 756313Sgblack@eecs.umich.edu int numGlobals = (MaxGL + 1) * 8; 766313Sgblack@eecs.umich.edu if(reg < 8) 776313Sgblack@eecs.umich.edu { 786313Sgblack@eecs.umich.edu //Global register 796313Sgblack@eecs.umich.edu //Put it in the appropriate set of globals 806313Sgblack@eecs.umich.edu newReg = reg + gl * 8; 816313Sgblack@eecs.umich.edu } 826313Sgblack@eecs.umich.edu else if(reg < NumIntArchRegs) 836313Sgblack@eecs.umich.edu { 846313Sgblack@eecs.umich.edu //Regular windowed register 856313Sgblack@eecs.umich.edu //Put it in the window pointed to by cwp 866313Sgblack@eecs.umich.edu newReg = numGlobals + 876313Sgblack@eecs.umich.edu ((reg - 8 - cwp * 16 + NWindows * 16) % (NWindows * 16)); 886313Sgblack@eecs.umich.edu } 896313Sgblack@eecs.umich.edu else if(reg < NumIntArchRegs + NumMicroIntRegs) 906313Sgblack@eecs.umich.edu { 916313Sgblack@eecs.umich.edu //Microcode register 926313Sgblack@eecs.umich.edu //Displace from the end of the regular registers 936313Sgblack@eecs.umich.edu newReg = reg - NumIntArchRegs + numGlobals + NWindows * 16; 946313Sgblack@eecs.umich.edu } 956313Sgblack@eecs.umich.edu else if(reg < 2 * NumIntArchRegs + NumMicroIntRegs) 966313Sgblack@eecs.umich.edu { 976313Sgblack@eecs.umich.edu reg -= (NumIntArchRegs + NumMicroIntRegs); 986313Sgblack@eecs.umich.edu if(reg < 8) 996313Sgblack@eecs.umich.edu { 1006313Sgblack@eecs.umich.edu //Global register from the next window 1016313Sgblack@eecs.umich.edu //Put it in the appropriate set of globals 1026313Sgblack@eecs.umich.edu newReg = reg + gl * 8; 1036313Sgblack@eecs.umich.edu } 1046313Sgblack@eecs.umich.edu else 1056313Sgblack@eecs.umich.edu { 1066313Sgblack@eecs.umich.edu //Windowed register from the previous window 1076313Sgblack@eecs.umich.edu //Put it in the window before the one pointed to by cwp 1086313Sgblack@eecs.umich.edu newReg = numGlobals + 1096313Sgblack@eecs.umich.edu ((reg - 8 - (cwp - 1) * 16 + NWindows * 16) % (NWindows * 16)); 1106313Sgblack@eecs.umich.edu } 1116313Sgblack@eecs.umich.edu } 1126313Sgblack@eecs.umich.edu else if(reg < 3 * NumIntArchRegs + NumMicroIntRegs) 1136313Sgblack@eecs.umich.edu { 1146313Sgblack@eecs.umich.edu reg -= (2 * NumIntArchRegs + NumMicroIntRegs); 1156313Sgblack@eecs.umich.edu if(reg < 8) 1166313Sgblack@eecs.umich.edu { 1176313Sgblack@eecs.umich.edu //Global register from the previous window 1186313Sgblack@eecs.umich.edu //Put it in the appropriate set of globals 1196313Sgblack@eecs.umich.edu newReg = reg + gl * 8; 1206313Sgblack@eecs.umich.edu } 1216313Sgblack@eecs.umich.edu else 1226313Sgblack@eecs.umich.edu { 1236313Sgblack@eecs.umich.edu //Windowed register from the next window 1246313Sgblack@eecs.umich.edu //Put it in the window after the one pointed to by cwp 1256313Sgblack@eecs.umich.edu newReg = numGlobals + 1266313Sgblack@eecs.umich.edu ((reg - 8 - (cwp + 1) * 16 + NWindows * 16) % (NWindows * 16)); 1276313Sgblack@eecs.umich.edu } 1286313Sgblack@eecs.umich.edu } 1296313Sgblack@eecs.umich.edu else 1306313Sgblack@eecs.umich.edu panic("Tried to flatten invalid register index %d!\n", reg); 1316313Sgblack@eecs.umich.edu DPRINTF(RegisterWindows, "Flattened register %d to %d.\n", reg, newReg); 1326313Sgblack@eecs.umich.edu return newReg; 1336313Sgblack@eecs.umich.edu} 1346313Sgblack@eecs.umich.edu 1356313Sgblack@eecs.umich.eduvoid 1366313Sgblack@eecs.umich.eduISA::serialize(EventManager *em, std::ostream &os) 1376313Sgblack@eecs.umich.edu{ 1386313Sgblack@eecs.umich.edu miscRegFile.serialize(em, os); 1396313Sgblack@eecs.umich.edu} 1406313Sgblack@eecs.umich.edu 1416313Sgblack@eecs.umich.eduvoid 1426313Sgblack@eecs.umich.eduISA::unserialize(EventManager *em, Checkpoint *cp, const std::string §ion) 1436313Sgblack@eecs.umich.edu{ 1446313Sgblack@eecs.umich.edu miscRegFile.unserialize(em, cp, section); 1456313Sgblack@eecs.umich.edu} 1466313Sgblack@eecs.umich.edu 1476313Sgblack@eecs.umich.edu} 148