ua2005.cc revision 3827
12650Ssaidi@eecs.umich.edu/* 22650Ssaidi@eecs.umich.edu * Copyright (c) 2006 The Regents of The University of Michigan 32650Ssaidi@eecs.umich.edu * All rights reserved. 42650Ssaidi@eecs.umich.edu * 52650Ssaidi@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 62650Ssaidi@eecs.umich.edu * modification, are permitted provided that the following conditions are 72650Ssaidi@eecs.umich.edu * met: redistributions of source code must retain the above copyright 82650Ssaidi@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 92650Ssaidi@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 102650Ssaidi@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 112650Ssaidi@eecs.umich.edu * documentation and/or other materials provided with the distribution; 122650Ssaidi@eecs.umich.edu * neither the name of the copyright holders nor the names of its 132650Ssaidi@eecs.umich.edu * contributors may be used to endorse or promote products derived from 142650Ssaidi@eecs.umich.edu * this software without specific prior written permission. 152650Ssaidi@eecs.umich.edu * 162650Ssaidi@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172650Ssaidi@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182650Ssaidi@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192650Ssaidi@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202650Ssaidi@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212650Ssaidi@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222650Ssaidi@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232650Ssaidi@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242650Ssaidi@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252650Ssaidi@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262650Ssaidi@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Ali Saidi 292650Ssaidi@eecs.umich.edu */ 302650Ssaidi@eecs.umich.edu 313817Ssaidi@eecs.umich.edu#include "arch/sparc/miscregfile.hh" 323817Ssaidi@eecs.umich.edu#include "base/bitfield.hh" 333817Ssaidi@eecs.umich.edu#include "base/trace.hh" 343817Ssaidi@eecs.umich.edu#include "cpu/base.hh" 353817Ssaidi@eecs.umich.edu#include "cpu/thread_context.hh" 362650Ssaidi@eecs.umich.edu 373817Ssaidi@eecs.umich.eduusing namespace SparcISA; 383817Ssaidi@eecs.umich.edu 393817Ssaidi@eecs.umich.eduvoid 403817Ssaidi@eecs.umich.eduMiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val, 412680Sktlim@umich.edu ThreadContext *tc) 422650Ssaidi@eecs.umich.edu{ 432650Ssaidi@eecs.umich.edu int64_t time; 442650Ssaidi@eecs.umich.edu switch (miscReg) { 452982Sstever@eecs.umich.edu /* Full system only ASRs */ 462650Ssaidi@eecs.umich.edu case MISCREG_SOFTINT: 472650Ssaidi@eecs.umich.edu // Check if we are going to interrupt because of something 482650Ssaidi@eecs.umich.edu setReg(miscReg, val); 493827Shsul@eecs.umich.edu tc->getCpuPtr()->checkInterrupts = true; 503817Ssaidi@eecs.umich.edu break; 512650Ssaidi@eecs.umich.edu 522650Ssaidi@eecs.umich.edu case MISCREG_SOFTINT_CLR: 532680Sktlim@umich.edu return setRegWithEffect(miscReg, ~val & softint, tc); 542650Ssaidi@eecs.umich.edu case MISCREG_SOFTINT_SET: 552680Sktlim@umich.edu return setRegWithEffect(miscReg, val | softint, tc); 562650Ssaidi@eecs.umich.edu 572650Ssaidi@eecs.umich.edu case MISCREG_TICK_CMPR: 582651Ssaidi@eecs.umich.edu if (tickCompare == NULL) 592680Sktlim@umich.edu tickCompare = new TickCompareEvent(this, tc); 602650Ssaidi@eecs.umich.edu setReg(miscReg, val); 613817Ssaidi@eecs.umich.edu if ((tick_cmpr & mask(63)) && tickCompare->scheduled()) 623817Ssaidi@eecs.umich.edu tickCompare->deschedule(); 633817Ssaidi@eecs.umich.edu time = (tick_cmpr & mask(63)) - (tick & mask(63)); 643817Ssaidi@eecs.umich.edu if (!(tick_cmpr & ~mask(63)) && time > 0) 653817Ssaidi@eecs.umich.edu tickCompare->schedule(time * tc->getCpuPtr()->cycles(1)); 663817Ssaidi@eecs.umich.edu break; 672650Ssaidi@eecs.umich.edu 682650Ssaidi@eecs.umich.edu case MISCREG_STICK_CMPR: 692651Ssaidi@eecs.umich.edu if (sTickCompare == NULL) 702680Sktlim@umich.edu sTickCompare = new STickCompareEvent(this, tc); 712650Ssaidi@eecs.umich.edu setReg(miscReg, val); 723817Ssaidi@eecs.umich.edu if ((stick_cmpr & mask(63)) && sTickCompare->scheduled()) 733817Ssaidi@eecs.umich.edu sTickCompare->deschedule(); 743817Ssaidi@eecs.umich.edu time = (stick_cmpr & mask(63)) - (stick & mask(63)); 753817Ssaidi@eecs.umich.edu if (!(stick_cmpr & ~mask(63)) && time > 0) 763817Ssaidi@eecs.umich.edu sTickCompare->schedule(time * tc->getCpuPtr()->cycles(1)); 773817Ssaidi@eecs.umich.edu break; 782650Ssaidi@eecs.umich.edu 793827Shsul@eecs.umich.edu case MISCREG_PSTATE: 803827Shsul@eecs.umich.edu if (val & ie && !(pstate & ie)) { 813827Shsul@eecs.umich.edu tc->getCpuPtr()->checkInterrupts = true; 823827Shsul@eecs.umich.edu } 833827Shsul@eecs.umich.edu setReg(miscReg, val); 843827Shsul@eecs.umich.edu 852650Ssaidi@eecs.umich.edu case MISCREG_PIL: 863827Shsul@eecs.umich.edu if (val < pil) { 873827Shsul@eecs.umich.edu tc->getCpuPtr()->checkInterrupts = true; 883827Shsul@eecs.umich.edu } 893817Ssaidi@eecs.umich.edu setReg(miscReg, val); 903817Ssaidi@eecs.umich.edu break; 912650Ssaidi@eecs.umich.edu 923817Ssaidi@eecs.umich.edu case MISCREG_HVER: 933817Ssaidi@eecs.umich.edu panic("Shouldn't be writing HVER\n"); 942650Ssaidi@eecs.umich.edu 952650Ssaidi@eecs.umich.edu case MISCREG_HTBA: 962650Ssaidi@eecs.umich.edu // clear lower 7 bits on writes. 972650Ssaidi@eecs.umich.edu setReg(miscReg, val & ULL(~0x7FFF)); 983817Ssaidi@eecs.umich.edu break; 992650Ssaidi@eecs.umich.edu 1002650Ssaidi@eecs.umich.edu case MISCREG_HSTICK_CMPR: 1012651Ssaidi@eecs.umich.edu if (hSTickCompare == NULL) 1022680Sktlim@umich.edu hSTickCompare = new HSTickCompareEvent(this, tc); 1032650Ssaidi@eecs.umich.edu setReg(miscReg, val); 1043817Ssaidi@eecs.umich.edu if ((hstick_cmpr & mask(63)) && hSTickCompare->scheduled()) 1053817Ssaidi@eecs.umich.edu hSTickCompare->deschedule(); 1063817Ssaidi@eecs.umich.edu time = (hstick_cmpr & mask(63)) - (stick & mask(63)); 1073817Ssaidi@eecs.umich.edu if (!(hstick_cmpr & ~mask(63)) && time > 0) 1083817Ssaidi@eecs.umich.edu hSTickCompare->schedule(time * tc->getCpuPtr()->cycles(1)); 1093817Ssaidi@eecs.umich.edu break; 1103817Ssaidi@eecs.umich.edu 1113817Ssaidi@eecs.umich.edu case MISCREG_HPSTATE: 1123827Shsul@eecs.umich.edu // T1000 spec says impl. dependent val must always be 1 1133827Shsul@eecs.umich.edu setReg(miscReg, val | id); 1143827Shsul@eecs.umich.edu 1153817Ssaidi@eecs.umich.edu case MISCREG_HTSTATE: 1163817Ssaidi@eecs.umich.edu case MISCREG_STRAND_STS_REG: 1173817Ssaidi@eecs.umich.edu setReg(miscReg, val); 1183817Ssaidi@eecs.umich.edu break; 1193817Ssaidi@eecs.umich.edu 1202650Ssaidi@eecs.umich.edu default: 1213827Shsul@eecs.umich.edu panic("Invalid write to FS misc register %s\n", getMiscRegName(miscReg)); 1222650Ssaidi@eecs.umich.edu } 1232650Ssaidi@eecs.umich.edu} 1242650Ssaidi@eecs.umich.edu 1252650Ssaidi@eecs.umich.eduMiscReg 1263817Ssaidi@eecs.umich.eduMiscRegFile::readFSRegWithEffect(int miscReg, ThreadContext * tc) 1272650Ssaidi@eecs.umich.edu{ 1282650Ssaidi@eecs.umich.edu switch (miscReg) { 1292650Ssaidi@eecs.umich.edu 1302982Sstever@eecs.umich.edu /* Privileged registers. */ 1312650Ssaidi@eecs.umich.edu case MISCREG_SOFTINT: 1322650Ssaidi@eecs.umich.edu case MISCREG_TICK_CMPR: 1332650Ssaidi@eecs.umich.edu case MISCREG_STICK_CMPR: 1343817Ssaidi@eecs.umich.edu case MISCREG_PIL: 1352650Ssaidi@eecs.umich.edu case MISCREG_HPSTATE: 1362650Ssaidi@eecs.umich.edu case MISCREG_HINTP: 1372650Ssaidi@eecs.umich.edu case MISCREG_HTSTATE: 1383817Ssaidi@eecs.umich.edu case MISCREG_STRAND_STS_REG: 1393817Ssaidi@eecs.umich.edu case MISCREG_HSTICK_CMPR: 1403817Ssaidi@eecs.umich.edu return readReg(miscReg) ; 1412650Ssaidi@eecs.umich.edu 1422650Ssaidi@eecs.umich.edu case MISCREG_HTBA: 1432650Ssaidi@eecs.umich.edu return readReg(miscReg) & ULL(~0x7FFF); 1442650Ssaidi@eecs.umich.edu case MISCREG_HVER: 1452650Ssaidi@eecs.umich.edu return NWindows | MaxTL << 8 | MaxGL << 16; 1462650Ssaidi@eecs.umich.edu 1472650Ssaidi@eecs.umich.edu default: 1483817Ssaidi@eecs.umich.edu panic("Invalid read to FS misc register\n"); 1492650Ssaidi@eecs.umich.edu } 1502650Ssaidi@eecs.umich.edu} 1513817Ssaidi@eecs.umich.edu/* 1523817Ssaidi@eecs.umich.edu In Niagra STICK==TICK so this isn't needed 1533817Ssaidi@eecs.umich.edu case MISCREG_STICK: 1543817Ssaidi@eecs.umich.edu SparcSystem *sys; 1553817Ssaidi@eecs.umich.edu sys = dynamic_cast<SparcSystem*>(tc->getSystemPtr()); 1563817Ssaidi@eecs.umich.edu assert(sys != NULL); 1573817Ssaidi@eecs.umich.edu return curTick/Clock::Int::ns - sys->sysTick | (stick & ~(mask(63))); 1583817Ssaidi@eecs.umich.edu*/ 1593817Ssaidi@eecs.umich.edu 1603817Ssaidi@eecs.umich.edu 1612650Ssaidi@eecs.umich.edu 1622651Ssaidi@eecs.umich.eduvoid 1632680Sktlim@umich.eduMiscRegFile::processTickCompare(ThreadContext *tc) 1642651Ssaidi@eecs.umich.edu{ 1652651Ssaidi@eecs.umich.edu panic("tick compare not implemented\n"); 1662651Ssaidi@eecs.umich.edu} 1672651Ssaidi@eecs.umich.edu 1682651Ssaidi@eecs.umich.eduvoid 1692680Sktlim@umich.eduMiscRegFile::processSTickCompare(ThreadContext *tc) 1702651Ssaidi@eecs.umich.edu{ 1712651Ssaidi@eecs.umich.edu panic("tick compare not implemented\n"); 1722651Ssaidi@eecs.umich.edu} 1732651Ssaidi@eecs.umich.edu 1742651Ssaidi@eecs.umich.eduvoid 1752680Sktlim@umich.eduMiscRegFile::processHSTickCompare(ThreadContext *tc) 1762651Ssaidi@eecs.umich.edu{ 1772651Ssaidi@eecs.umich.edu panic("tick compare not implemented\n"); 1782651Ssaidi@eecs.umich.edu} 1792650Ssaidi@eecs.umich.edu 180