src/cpu/legiontrace.cc

   1 /*
   2  * Copyright (c) 2001-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Steve Reinhardt
  29  *          Lisa Hsu
  30  *          Nathan Binkert
  31  *          Steve Raasch
  32  */
  33
  34 #include "config/the_isa.hh"
  35 #if THE_ISA != SPARC_ISA
  36     #error Legion tracing only works with SPARC simulations!
  37 #endif
  38
  39 #include <sys/ipc.h>
  40 #include <sys/shm.h>
  41
  42 #include <cstdio>
  43 #include <iomanip>
  44
  45 #include "arch/sparc/decoder.hh"
  46 #include "arch/sparc/registers.hh"
  47 #include "arch/sparc/utility.hh"
  48 #include "arch/tlb.hh"
  49 #include "base/socket.hh"
  50 #include "cpu/base.hh"
  51 #include "cpu/legiontrace.hh"
  52 #include "cpu/static_inst.hh"
  53 #include "cpu/thread_context.hh"
  54 #include "sim/full_system.hh"
  55 #include "sim/system.hh"
  56
  57 //XXX This is temporary
  58 #include "cpu/m5legion_interface.h"
  59
  60 using namespace std;
  61 using namespace TheISA;
  62
  63 static int diffcount = 0;
  64 static bool wasMicro = false;
  65
  66 namespace Trace {
  67 SharedData *shared_data = NULL;
  68
  69 void
  70 setupSharedData()
  71 {
  72     int shmfd = shmget('M' << 24 | getuid(), sizeof(SharedData), 0777);
  73     if (shmfd < 0)
  74         fatal("Couldn't get shared memory fd. Is Legion running?");
  75
  76     shared_data = (SharedData*)shmat(shmfd, NULL, SHM_RND);
  77     if (shared_data == (SharedData*)-1)
  78         fatal("Couldn't allocate shared memory");
  79
  80     if (shared_data->flags != OWN_M5)
  81         fatal("Shared memory has invalid owner");
  82
  83     if (shared_data->version != VERSION)
  84         fatal("Shared Data is wrong version! M5: %d Legion: %d", VERSION,
  85               shared_data->version);
  86
  87     // step legion forward one cycle so we can get register values
  88     shared_data->flags = OWN_LEGION;
  89 }
  90
  91 ////////////////////////////////////////////////////////////////////////
  92 //
  93 //  Utility methods for pretty printing a report about a difference
  94 //
  95
  96 inline char * genCenteredLabel(int length, char * buffer, const char * label)
  97 {
  98     int labelLength = strlen(label);
  99     assert(labelLength <= length);
 100     int leftPad = (length - labelLength) / 2;
 101     int rightPad = length - leftPad - labelLength;
 102     char format[64];
 103     sprintf(format, "%%%ds%%s%%%ds", leftPad, rightPad);
 104     sprintf(buffer, format, "", label, "");
 105     return buffer;
 106 }
 107
 108 inline void printRegPair(ostream & os, char const * title, uint64_t a, uint64_t b)
 109 {
 110     ccprintf(os, "  %16s  |  %#018x   %s   %#-018x  \n",
 111             title, a, (a == b) ? "|" : "X", b);
 112 }
 113
 114 inline void printColumnLabels(ostream & os)
 115 {
 116     static char * regLabel = genCenteredLabel(16, new char[17], "Register");
 117     static char * m5Label = genCenteredLabel(18, new char[18], "M5");
 118     static char * legionLabel = genCenteredLabel(18, new char[18], "Legion");
 119     ccprintf(os, "  %s  |  %s   |   %s  \n", regLabel, m5Label, legionLabel);
 120     ccprintf(os, "--------------------+-----------------------+-----------------------\n");
 121 }
 122
 123 inline void printSectionHeader(ostream & os, const char * name)
 124 {
 125     char sectionString[70];
 126     genCenteredLabel(69, sectionString, name);
 127     ccprintf(os, "====================================================================\n");
 128     ccprintf(os, "%69s\n", sectionString);
 129     ccprintf(os, "====================================================================\n");
 130 }
 131
 132 inline void printLevelHeader(ostream & os, int level)
 133 {
 134     char sectionString[70];
 135     char levelName[70];
 136     sprintf(levelName, "Trap stack level %d", level);
 137     genCenteredLabel(69, sectionString, levelName);
 138     ccprintf(os, "====================================================================\n");
 139     ccprintf(os, "%69s\n", sectionString);
 140     ccprintf(os, "====================================================================\n");
 141 }
 142
 143 void
 144 Trace::LegionTraceRecord::dump()
 145 {
 146     ostream &outs = Trace::output();
 147
 148     // Compare
 149     bool compared = false;
 150     bool diffPC   = false;
 151     bool diffCC   = false;
 152     bool diffInst = false;
 153     bool diffIntRegs = false;
 154     bool diffFpRegs = false;
 155     bool diffTpc = false;
 156     bool diffTnpc = false;
 157     bool diffTstate = false;
 158     bool diffTt = false;
 159     bool diffTba M5_VAR_USED = false;
 160     bool diffHpstate = false;
 161     bool diffHtstate = false;
 162     bool diffHtba = false;
 163     bool diffPstate = false;
 164     bool diffY = false;
 165     bool diffFsr = false;
 166     bool diffCcr = false;
 167     bool diffTl = false;
 168     bool diffGl = false;
 169     bool diffAsi = false;
 170     bool diffPil = false;
 171     bool diffCwp = false;
 172     bool diffCansave = false;
 173     bool diffCanrestore = false;
 174     bool diffOtherwin = false;
 175     bool diffCleanwin = false;
 176     bool diffTlb = false;
 177     Addr m5Pc, lgnPc;
 178
 179     if (!shared_data)
 180         setupSharedData();
 181
 182     // We took a trap on a micro-op...
 183     if (wasMicro && !staticInst->isMicroop())
 184     {
 185         // let's skip comparing this tick
 186         while (!compared)
 187             if (shared_data->flags == OWN_M5) {
 188                 shared_data->flags = OWN_LEGION;
 189                 compared = true;
 190             }
 191         compared = false;
 192         wasMicro = false;
 193     }
 194
 195     if (staticInst->isLastMicroop())
 196         wasMicro = false;
 197     else if (staticInst->isMicroop())
 198         wasMicro = true;
 199
 200
 201     if(!staticInst->isMicroop() || staticInst->isLastMicroop()) {
 202         while (!compared) {
 203             if (shared_data->flags == OWN_M5) {
 204                 m5Pc = pc.instAddr() & SparcISA::PAddrImplMask;
 205                 if (bits(shared_data->pstate,3,3)) {
 206                     m5Pc &= mask(32);
 207                 }
 208                 lgnPc = shared_data->pc & SparcISA::PAddrImplMask;
 209                 if (lgnPc != m5Pc)
 210                    diffPC = true;
 211
 212                 if (shared_data->cycle_count !=
 213                         thread->getCpuPtr()->instCount())
 214                     diffCC = true;
 215
 216                 if (shared_data->instruction !=
 217                         (SparcISA::MachInst)staticInst->machInst) {
 218                     diffInst = true;
 219                 }
 220                 // assume we have %g0 working correctly
 221                 for (int i = 1; i < TheISA::NumIntArchRegs; i++) {
 222                     if (thread->readIntReg(i) != shared_data->intregs[i]) {
 223                         diffIntRegs = true;
 224                     }
 225                 }
 226                 for (int i = 0; i < TheISA::NumFloatRegs/2; i++) {
 227                     if (thread->readFloatRegBits(i*2) !=
 228                             shared_data->fpregs[i]) {
 229                         diffFpRegs = true;
 230                     }
 231                 }
 232                         uint64_t oldTl =
 233                             thread->readMiscRegNoEffect(MISCREG_TL);
 234                 if (oldTl != shared_data->tl)
 235                     diffTl = true;
 236                 for (int i = 1; i <= MaxTL; i++) {
 237                     thread->setMiscRegNoEffect(MISCREG_TL, i);
 238                     if (thread->readMiscRegNoEffect(MISCREG_TPC) !=
 239                             shared_data->tpc[i-1])
 240                         diffTpc = true;
 241                     if (thread->readMiscRegNoEffect(MISCREG_TNPC) !=
 242                             shared_data->tnpc[i-1])
 243                         diffTnpc = true;
 244                     if (thread->readMiscRegNoEffect(MISCREG_TSTATE) !=
 245                             shared_data->tstate[i-1])
 246                         diffTstate = true;
 247                     if (thread->readMiscRegNoEffect(MISCREG_TT) !=
 248                             shared_data->tt[i-1])
 249                         diffTt = true;
 250                     if (thread->readMiscRegNoEffect(MISCREG_HTSTATE) !=
 251                             shared_data->htstate[i-1])
 252                         diffHtstate = true;
 253                 }
 254                 thread->setMiscRegNoEffect(MISCREG_TL, oldTl);
 255
 256                 if(shared_data->tba != thread->readMiscRegNoEffect(MISCREG_TBA))
 257                     diffTba = true;
 258                 //When the hpstate register is read by an instruction,
 259                 //legion has bit 11 set. When it's in storage, it doesn't.
 260                 //Since we don't directly support seperate interpretations
 261                 //of the registers like that, the bit is always set to 1 and
 262                 //we just don't compare it. It's not supposed to matter
 263                 //anyway.
 264                 if((shared_data->hpstate | (1 << 11)) !=
 265                         thread->readMiscRegNoEffect(MISCREG_HPSTATE))
 266                     diffHpstate = true;
 267                 if(shared_data->htba !=
 268                         thread->readMiscRegNoEffect(MISCREG_HTBA))
 269                     diffHtba = true;
 270                 if(shared_data->pstate !=
 271                         thread->readMiscRegNoEffect(MISCREG_PSTATE))
 272                     diffPstate = true;
 273                 //if(shared_data->y !=
 274                 //        thread->readMiscRegNoEffect(MISCREG_Y))
 275                 if(shared_data->y !=
 276                         thread->readIntReg(NumIntArchRegs + 1))
 277                     diffY = true;
 278                 if(shared_data->fsr !=
 279                         thread->readMiscRegNoEffect(MISCREG_FSR)) {
 280                     diffFsr = true;
 281                     if (mbits(shared_data->fsr, 63,10) ==
 282                             mbits(thread->readMiscRegNoEffect(MISCREG_FSR),
 283                                 63,10)) {
 284                         thread->setMiscRegNoEffect(MISCREG_FSR,
 285                                 shared_data->fsr);
 286                         diffFsr = false;
 287                     }
 288                 }
 289                 //if(shared_data->ccr !=
 290                 //        thread->readMiscRegNoEffect(MISCREG_CCR))
 291                 if(shared_data->ccr !=
 292                         thread->readIntReg(NumIntArchRegs + 2))
 293                     diffCcr = true;
 294                 if(shared_data->gl !=
 295                         thread->readMiscRegNoEffect(MISCREG_GL))
 296                     diffGl = true;
 297                 if(shared_data->asi !=
 298                         thread->readMiscRegNoEffect(MISCREG_ASI))
 299                     diffAsi = true;
 300                 if(shared_data->pil !=
 301                         thread->readMiscRegNoEffect(MISCREG_PIL))
 302                     diffPil = true;
 303                 if(shared_data->cwp !=
 304                         thread->readMiscRegNoEffect(MISCREG_CWP))
 305                     diffCwp = true;
 306                 //if(shared_data->cansave !=
 307                 //        thread->readMiscRegNoEffect(MISCREG_CANSAVE))
 308                 if(shared_data->cansave !=
 309                         thread->readIntReg(NumIntArchRegs + 3))
 310                     diffCansave = true;
 311                 //if(shared_data->canrestore !=
 312                 //        thread->readMiscRegNoEffect(MISCREG_CANRESTORE))
 313                 if(shared_data->canrestore !=
 314                         thread->readIntReg(NumIntArchRegs + 4))
 315                     diffCanrestore = true;
 316                 //if(shared_data->otherwin !=
 317                 //        thread->readMiscRegNoEffect(MISCREG_OTHERWIN))
 318                 if(shared_data->otherwin !=
 319                         thread->readIntReg(NumIntArchRegs + 6))
 320                     diffOtherwin = true;
 321                 //if(shared_data->cleanwin !=
 322                 //        thread->readMiscRegNoEffect(MISCREG_CLEANWIN))
 323                 if(shared_data->cleanwin !=
 324                         thread->readIntReg(NumIntArchRegs + 5))
 325                     diffCleanwin = true;
 326
 327                 for (int i = 0; i < 64; i++) {
 328                     if (shared_data->itb[i] !=
 329                             thread->getITBPtr()->TteRead(i))
 330                         diffTlb = true;
 331                     if (shared_data->dtb[i] !=
 332                             thread->getDTBPtr()->TteRead(i))
 333                         diffTlb = true;
 334                 }
 335
 336                 if (diffPC || diffCC || diffInst ||
 337                     diffIntRegs || diffFpRegs ||
 338                     diffTpc || diffTnpc || diffTstate || diffTt ||
 339                     diffHpstate || diffHtstate || diffHtba ||
 340                     diffPstate || diffY || diffCcr || diffTl || diffFsr ||
 341                     diffGl || diffAsi || diffPil || diffCwp ||
 342                     diffCansave || diffCanrestore ||
 343                     diffOtherwin || diffCleanwin || diffTlb) {
 344
 345                     outs << "Differences found between M5 and Legion:";
 346                     if (diffPC)
 347                         outs << " [PC]";
 348                     if (diffCC)
 349                         outs << " [CC]";
 350                     if (diffInst)
 351                         outs << " [Instruction]";
 352                     if (diffIntRegs)
 353                         outs << " [IntRegs]";
 354                     if (diffFpRegs)
 355                         outs << " [FpRegs]";
 356                     if (diffTpc)
 357                         outs << " [Tpc]";
 358                     if (diffTnpc)
 359                         outs << " [Tnpc]";
 360                     if (diffTstate)
 361                         outs << " [Tstate]";
 362                     if (diffTt)
 363                         outs << " [Tt]";
 364                     if (diffHpstate)
 365                         outs << " [Hpstate]";
 366                     if (diffHtstate)
 367                         outs << " [Htstate]";
 368                     if (diffHtba)
 369                         outs << " [Htba]";
 370                     if (diffPstate)
 371                         outs << " [Pstate]";
 372                     if (diffY)
 373                         outs << " [Y]";
 374                     if (diffFsr)
 375                         outs << " [FSR]";
 376                     if (diffCcr)
 377                         outs << " [Ccr]";
 378                     if (diffTl)
 379                         outs << " [Tl]";
 380                     if (diffGl)
 381                         outs << " [Gl]";
 382                     if (diffAsi)
 383                         outs << " [Asi]";
 384                     if (diffPil)
 385                         outs << " [Pil]";
 386                     if (diffCwp)
 387                         outs << " [Cwp]";
 388                     if (diffCansave)
 389                         outs << " [Cansave]";
 390                     if (diffCanrestore)
 391                         outs << " [Canrestore]";
 392                     if (diffOtherwin)
 393                         outs << " [Otherwin]";
 394                     if (diffCleanwin)
 395                         outs << " [Cleanwin]";
 396                     if (diffTlb)
 397                         outs << " [Tlb]";
 398                     outs << endl << endl;
 399
 400                     outs << right << setfill(' ') << setw(15)
 401                          << "M5 PC: " << "0x"<< setw(16) << setfill('0')
 402                          << hex << m5Pc << endl;
 403                     outs << setfill(' ') << setw(15)
 404                          << "Legion PC: " << "0x"
 405                          << setw(16) << setfill('0') << hex
 406                          << lgnPc << endl << endl;
 407
 408                     outs << right << setfill(' ') << setw(15)
 409                          << "M5 CC: " << "0x"
 410                          << setw(16) << setfill('0') << hex
 411                          << thread->getCpuPtr()->instCount() << endl;
 412                     outs << setfill(' ') << setw(15)
 413                          << "Legion CC: " << "0x"
 414                          << setw(16) << setfill('0') << hex
 415                          << shared_data->cycle_count << endl << endl;
 416
 417                     outs << setfill(' ') << setw(15)
 418                          << "M5 Inst: " << "0x"
 419                          << setw(8) << setfill('0') << hex
 420                          << staticInst->machInst
 421                          << staticInst->disassemble(m5Pc, debugSymbolTable)
 422                          << endl;
 423
 424                     TheISA::Decoder *decoder = thread->getDecoderPtr();
 425                     decoder->moreBytes(m5Pc, m5Pc, shared_data->instruction);
 426
 427                     assert(decoder->instReady());
 428
 429                     PCState tempPC = pc;
 430                     StaticInstPtr legionInst = decoder->decode(tempPC);
 431                     outs << setfill(' ') << setw(15)
 432                          << " Legion Inst: "
 433                          << "0x" << setw(8) << setfill('0') << hex
 434                          << shared_data->instruction
 435                          << legionInst->disassemble(lgnPc, debugSymbolTable)
 436                          << endl << endl;
 437
 438                     printSectionHeader(outs, "General State");
 439                     printColumnLabels(outs);
 440                     printRegPair(outs, "HPstate",
 441                             thread->readMiscRegNoEffect(MISCREG_HPSTATE),
 442                             shared_data->hpstate | (1 << 11));
 443                     printRegPair(outs, "Htba",
 444                             thread->readMiscRegNoEffect(MISCREG_HTBA),
 445                             shared_data->htba);
 446                     printRegPair(outs, "Pstate",
 447                             thread->readMiscRegNoEffect(MISCREG_PSTATE),
 448                             shared_data->pstate);
 449                     printRegPair(outs, "Y",
 450                             //thread->readMiscRegNoEffect(MISCREG_Y),
 451                             thread->readIntReg(NumIntArchRegs + 1),
 452                             shared_data->y);
 453                     printRegPair(outs, "FSR",
 454                             thread->readMiscRegNoEffect(MISCREG_FSR),
 455                             shared_data->fsr);
 456                     printRegPair(outs, "Ccr",
 457                             //thread->readMiscRegNoEffect(MISCREG_CCR),
 458                             thread->readIntReg(NumIntArchRegs + 2),
 459                             shared_data->ccr);
 460                     printRegPair(outs, "Tl",
 461                             thread->readMiscRegNoEffect(MISCREG_TL),
 462                             shared_data->tl);
 463                     printRegPair(outs, "Gl",
 464                             thread->readMiscRegNoEffect(MISCREG_GL),
 465                             shared_data->gl);
 466                     printRegPair(outs, "Asi",
 467                             thread->readMiscRegNoEffect(MISCREG_ASI),
 468                             shared_data->asi);
 469                     printRegPair(outs, "Pil",
 470                             thread->readMiscRegNoEffect(MISCREG_PIL),
 471                             shared_data->pil);
 472                     printRegPair(outs, "Cwp",
 473                             thread->readMiscRegNoEffect(MISCREG_CWP),
 474                             shared_data->cwp);
 475                     printRegPair(outs, "Cansave",
 476                             //thread->readMiscRegNoEffect(MISCREG_CANSAVE),
 477                             thread->readIntReg(NumIntArchRegs + 3),
 478                             shared_data->cansave);
 479                     printRegPair(outs, "Canrestore",
 480                             //thread->readMiscRegNoEffect(MISCREG_CANRESTORE),
 481                             thread->readIntReg(NumIntArchRegs + 4),
 482                             shared_data->canrestore);
 483                     printRegPair(outs, "Otherwin",
 484                             //thread->readMiscRegNoEffect(MISCREG_OTHERWIN),
 485                             thread->readIntReg(NumIntArchRegs + 6),
 486                             shared_data->otherwin);
 487                     printRegPair(outs, "Cleanwin",
 488                             //thread->readMiscRegNoEffect(MISCREG_CLEANWIN),
 489                             thread->readIntReg(NumIntArchRegs + 5),
 490                             shared_data->cleanwin);
 491                     outs << endl;
 492                     for (int i = 1; i <= MaxTL; i++) {
 493                         printLevelHeader(outs, i);
 494                         printColumnLabels(outs);
 495                         thread->setMiscRegNoEffect(MISCREG_TL, i);
 496                         printRegPair(outs, "Tpc",
 497                                 thread->readMiscRegNoEffect(MISCREG_TPC),
 498                                 shared_data->tpc[i-1]);
 499                         printRegPair(outs, "Tnpc",
 500                                 thread->readMiscRegNoEffect(MISCREG_TNPC),
 501                                 shared_data->tnpc[i-1]);
 502                         printRegPair(outs, "Tstate",
 503                                 thread->readMiscRegNoEffect(MISCREG_TSTATE),
 504                                 shared_data->tstate[i-1]);
 505                         printRegPair(outs, "Tt",
 506                                 thread->readMiscRegNoEffect(MISCREG_TT),
 507                                 shared_data->tt[i-1]);
 508                         printRegPair(outs, "Htstate",
 509                                 thread->readMiscRegNoEffect(MISCREG_HTSTATE),
 510                                 shared_data->htstate[i-1]);
 511                     }
 512                     thread->setMiscRegNoEffect(MISCREG_TL, oldTl);
 513                     outs << endl;
 514
 515                     printSectionHeader(outs, "General Purpose Registers");
 516                     static const char * regtypes[4] =
 517                         {"%g", "%o", "%l", "%i"};
 518                     for(int y = 0; y < 4; y++) {
 519                         for(int x = 0; x < 8; x++) {
 520                             char label[8];
 521                             sprintf(label, "%s%d", regtypes[y], x);
 522                             printRegPair(outs, label,
 523                                     thread->readIntReg(y*8+x),
 524                                     shared_data->intregs[y*8+x]);
 525                         }
 526                     }
 527                     if (diffFpRegs) {
 528                         for (int x = 0; x < 32; x++) {
 529                             char label[8];
 530                             sprintf(label, "%%f%d", x);
 531                             printRegPair(outs, label,
 532                                 thread->readFloatRegBits(x*2),
 533                                 shared_data->fpregs[x]);
 534                         }
 535                     }
 536                     if (diffTlb) {
 537                         printColumnLabels(outs);
 538                         char label[9];
 539                         for (int x = 0; x < 64; x++) {
 540                             if (shared_data->itb[x] !=
 541                                     ULL(0xFFFFFFFFFFFFFFFF) ||
 542                                 thread->getITBPtr()->TteRead(x) !=
 543                                 ULL(0xFFFFFFFFFFFFFFFF)) {
 544                                     sprintf(label, "I-TLB:%02d", x);
 545                                     printRegPair(outs, label,
 546                                             thread->getITBPtr()->TteRead(x),
 547                                             shared_data->itb[x]);
 548                             }
 549                         }
 550                         for (int x = 0; x < 64; x++) {
 551                             if (shared_data->dtb[x] !=
 552                                     ULL(0xFFFFFFFFFFFFFFFF) ||
 553                                 thread->getDTBPtr()->TteRead(x) !=
 554                                 ULL(0xFFFFFFFFFFFFFFFF))  {
 555                                     sprintf(label, "D-TLB:%02d", x);
 556                                     printRegPair(outs, label,
 557                                             thread->getDTBPtr()->TteRead(x),
 558                                             shared_data->dtb[x]);
 559                             }
 560                         }
 561                         thread->getITBPtr()->dumpAll();
 562                         thread->getDTBPtr()->dumpAll();
 563                     }
 564
 565                     diffcount++;
 566                     if (diffcount > 3)
 567                         fatal("Differences found between Legion and M5\n");
 568                 } else
 569                     diffcount = 0;
 570
 571                 compared = true;
 572                 shared_data->flags = OWN_LEGION;
 573             }
 574         } // while
 575     } // if not microop
 576 }
 577
 578 } // namespace Trace
 579
 580 ////////////////////////////////////////////////////////////////////////
 581 //
 582 //  ExeTracer Simulation Object
 583 //
 584 Trace::LegionTrace *
 585 LegionTraceParams::create()
 586 {
 587     if (!FullSystem)
 588         panic("Legion tracing only works in full system!");
 589     return new Trace::LegionTrace(this);
 590 };