apps/utils/pice/module/bp.c

   1 /*++
   2
   3 Copyright (c) 1998-2001 Klaus P. Gerlicher
   4
   5 Module Name:
   6
   7     bp.c
   8
   9 Abstract:
  10
  11     setting, listing and removing breakpoints
  12
  13 Environment:
  14
  15     LINUX 2.2.X
  16     Kernel mode only
  17
  18 Author:
  19
  20     Klaus P. Gerlicher
  21
  22 Revision History:
  23
  24     13-Nov-1999:        created
  25     15-Nov-2000:    general cleanup of source files
  26
  27 Copyright notice:
  28
  29   This file may be distributed under the terms of the GNU Public License.
  30
  31 --*/
  32
  33 ////////////////////////////////////////////////////
  34 // INCLUDES
  35 ////
  36 #include "remods.h"
  37 #include "precomp.h"
  38
  39 ////////////////////////////////////////////////////
  40 // GLOBALS
  41 ////
  42 char tempBp[1024];
  43
  44 ULONG OldInt3Handler=0;
  45
  46 SW_BP aSwBreakpoints[64]={{0,0,0,0},};
  47
  48 //*************************************************************************
  49 // FindSwBp()
  50 //
  51 //*************************************************************************
  52 PSW_BP FindSwBp(ULONG ulAddress)
  53 {
  54     ULONG i;
  55
  56     for(i=0;i<DIM(aSwBreakpoints);i++)
  57     {
  58         if(aSwBreakpoints[i].ulAddress == ulAddress && aSwBreakpoints[i].bUsed==TRUE && aSwBreakpoints[i].bVirtual==FALSE)
  59             return &aSwBreakpoints[i];
  60     }
  61
  62     return NULL;
  63 }
  64
  65 //*************************************************************************
  66 // FindEmptySwBpSlot()
  67 //
  68 //*************************************************************************
  69 PSW_BP FindEmptySwBpSlot(void)
  70 {
  71     ULONG i;
  72
  73     for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(SW_BP));i++)
  74     {
  75         if(aSwBreakpoints[i].bUsed == FALSE)
  76         {
  77             return &aSwBreakpoints[i];
  78         }
  79     }
  80
  81     return NULL;
  82 }
  83
  84 //*************************************************************************
  85 // FindVirtualSwBp()
  86 //
  87 //*************************************************************************
  88 PSW_BP FindVirtualSwBp(LPSTR ModName,LPSTR szFunctionName)
  89 {
  90     ULONG i;
  91     PSW_BP p;
  92
  93     for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(SW_BP));i++)
  94     {
  95         p = &aSwBreakpoints[i];
  96
  97         if(p->bUsed == TRUE &&
  98            p->bVirtual == TRUE &&
  99            PICE_strcmpi(p->szModName,ModName)==0 &&
 100            PICE_strcmpi(p->szFunctionName,szFunctionName)==0)
 101         {
 102             return p;
 103         }
 104     }
 105
 106     return NULL;
 107 }
 108
 109 //*************************************************************************
 110 // IsSwBpAtAddressInstalled()
 111 //
 112 //*************************************************************************
 113 BOOLEAN IsSwBpAtAddressInstalled(ULONG ulAddress)
 114 {
 115     ULONG i;
 116
 117     for(i=0;i<DIM(aSwBreakpoints);i++)
 118     {
 119         if(aSwBreakpoints[i].ulAddress == ulAddress &&
 120                    aSwBreakpoints[i].bUsed == TRUE &&
 121                    aSwBreakpoints[i].bInstalled &&
 122            aSwBreakpoints[i].bVirtual == FALSE)
 123             return TRUE;
 124     }
 125
 126         return FALSE;
 127 }
 128
 129 //*************************************************************************
 130 // IsSwBpAtAddress()
 131 //
 132 //*************************************************************************
 133 BOOLEAN IsSwBpAtAddress(ULONG ulAddress)
 134 {
 135     ULONG i;
 136
 137     for(i=0;i<DIM(aSwBreakpoints);i++)
 138     {
 139         if(aSwBreakpoints[i].ulAddress == ulAddress && aSwBreakpoints[i].bUsed==TRUE && aSwBreakpoints[i].bVirtual==FALSE)
 140             return TRUE;
 141     }
 142
 143         return FALSE;
 144 }
 145
 146 //*************************************************************************
 147 // NeedToReInstallSWBreakpoints()
 148 //
 149 //*************************************************************************
 150 BOOLEAN NeedToReInstallSWBreakpoints(ULONG ulAddress,BOOLEAN bUseAddress)
 151 {
 152     PSW_BP p;
 153     BOOLEAN bResult = FALSE;
 154     ULONG i;
 155
 156     ENTER_FUNC();
 157     DPRINT((0,"NeedToReInstallSWBreakpoint() for %x (bUseAddress = %s)\n",ulAddress,bUseAddress?"TRUE":"FALSE"));
 158
 159     for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(SW_BP));i++)
 160     {
 161         p = &aSwBreakpoints[i];
 162         if(bUseAddress)
 163         {
 164             if(p->bUsed == TRUE && p->bInstalled == FALSE && p->ulAddress==ulAddress && p->bVirtual==FALSE)
 165             {
 166                 if(IsAddressValid(p->ulAddress))
 167                 {
 168                     DPRINT((0,"NeedToReInstallSWBreakpoint(): [1] found BP\n"));
 169                     bResult = TRUE;
 170                     break;
 171                 }
 172             }
 173         }
 174         else
 175         {
 176             if(p->bUsed == TRUE && p->bInstalled == FALSE && p->bVirtual == FALSE)
 177             {
 178                 if(IsAddressValid(p->ulAddress))
 179                 {
 180                     DPRINT((0,"NeedToReInstallSWBreakpoint(): [2] found BP\n"));
 181                     bResult = TRUE;
 182                     break;
 183                 }
 184             }
 185         }
 186     }
 187
 188     LEAVE_FUNC();
 189
 190     return bResult;
 191 }
 192
 193 //*************************************************************************
 194 // ReInstallSWBreakpoint()
 195 //
 196 //*************************************************************************
 197 BOOLEAN ReInstallSWBreakpoint(ULONG ulAddress)
 198 {
 199     PSW_BP p;
 200     BOOLEAN bResult = FALSE;
 201     ULONG i;
 202
 203     ENTER_FUNC();
 204     DPRINT((0,"ReInstallSWBreakpoint()\n"));
 205
 206     for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(SW_BP));i++)
 207     {
 208         p = &aSwBreakpoints[i];
 209         if(p->bUsed == TRUE && p->bInstalled == FALSE && p->ulAddress == ulAddress && p->bVirtual == FALSE)
 210         {
 211             if(IsAddressValid(p->ulAddress))
 212             {
 213                                 BOOLEAN isWriteable;
 214
 215                                 if( !( isWriteable = IsAddressWriteable(p->ulAddress) ) )
 216                                         SetAddressWriteable(p->ulAddress,TRUE);
 217                                 *(PUCHAR)(p->ulAddress) = 0xCC;
 218                                 if( !isWriteable )
 219                                         SetAddressWriteable(p->ulAddress,FALSE);
 220                                 p->bInstalled = TRUE;
 221                     bResult = TRUE;
 222             }
 223         }
 224     }
 225
 226     LEAVE_FUNC();
 227
 228     return bResult;
 229 }
 230
 231
 232 //*************************************************************************
 233 // InstallSWBreakpoint()
 234 //
 235 //*************************************************************************
 236 BOOLEAN InstallSWBreakpoint(ULONG ulAddress,BOOLEAN bPermanent,void (*SWBreakpointCallback)(void))
 237 {
 238     PSW_BP p;
 239     BOOLEAN bResult = FALSE;
 240
 241     ENTER_FUNC();
 242     DPRINT((0,"InstallSWBreakpoint()\n"));
 243
 244     // check if page is present
 245     // TODO: must also check if it's a writable page
 246     if(IsAddressValid(ulAddress) )
 247     {
 248         DPRINT((0,"InstallSWBreakpoint(): %.8X is valid, writable? %d\n",ulAddress,IsAddressWriteable(ulAddress)));
 249                 DPRINT((0,"pde: %x, pte: %x\n", *(ADDR_TO_PDE(ulAddress)), *(ADDR_TO_PTE(ulAddress))));
 250         if((p = FindSwBp(ulAddress))==NULL)
 251         {
 252             DPRINT((0,"InstallSWBreakpoint(): %.8X is free\n",ulAddress));
 253             if( (p=FindEmptySwBpSlot()) )
 254             {
 255                                 BOOLEAN isWriteable;
 256                 DPRINT((0,"InstallSWBreakpoint(): found empty slot\n"));
 257                                 DPRINT((0,"InstallSWBreakpoint(): %x value: %x", ulAddress, *(PUCHAR)ulAddress));
 258                 p->ucOriginalOpcode = *(PUCHAR)ulAddress;
 259                                 //allow writing to page
 260                                 if( !( isWriteable = IsAddressWriteable(ulAddress) ) )
 261                                         SetAddressWriteable(ulAddress,TRUE);
 262                             DPRINT((0,"writing breakpoint\n"));
 263                                 *(PUCHAR)ulAddress = 0xCC;
 264                                 DPRINT((0,"restoring page access\n"));
 265                                 if( !isWriteable )
 266                                         SetAddressWriteable(ulAddress,FALSE);
 267                                 p->bUsed = TRUE;
 268                 p->bInstalled = TRUE;
 269                 // find next address
 270                 p->ulAddress = ulAddress;
 271                 Disasm(&ulAddress,(PUCHAR)&tempBp);
 272                 p->ulNextInstr = ulAddress;
 273                 p->bPermanent = bPermanent;
 274                 if(bPermanent)
 275                     p->Callback = SWBreakpointCallback;
 276                                 else
 277                                         p->Callback = NULL;
 278                 bResult = TRUE;
 279             }
 280         }
 281         else
 282         {
 283             DPRINT((0,"InstallSWBreakpoint(): %.8X is already used\n",ulAddress));
 284             if(p->bPermanent)
 285             {
 286                 DPRINT((0,"InstallSWBreakpoint(): %.8X is a permanent breakpoint\n",ulAddress));
 287             }
 288         }
 289     }
 290
 291     LEAVE_FUNC();
 292
 293     return bResult;
 294 }
 295
 296 //*************************************************************************
 297 // InstallVirtualSWBreakpoint()
 298 //
 299 //*************************************************************************
 300 BOOLEAN InstallVirtualSWBreakpoint(LPSTR ModName,LPSTR FunctionName)
 301 {
 302     PSW_BP p;
 303     BOOLEAN bResult = FALSE;
 304
 305     ENTER_FUNC();
 306     DPRINT((0,"InstallVirtualSWBreakpoint(%s!%s)\n",ModName,FunctionName));
 307
 308     if( (p=FindEmptySwBpSlot()) )
 309     {
 310         DPRINT((0,"InstallVirtualSWBreakpoint(): found empty slot\n"));
 311
 312         p->bUsed = TRUE;
 313         p->bInstalled = TRUE;
 314         p->bVirtual = TRUE;
 315                 p->Callback = NULL;
 316         PICE_strcpy(p->szModName,ModName);
 317         PICE_strcpy(p->szFunctionName,FunctionName);
 318
 319         bResult = TRUE;
 320     }
 321
 322     LEAVE_FUNC();
 323
 324     return bResult;
 325 }
 326
 327 //*************************************************************************
 328 // TryToInstallVirtualSWBreakpoints()
 329 //
 330 //*************************************************************************
 331 void TryToInstallVirtualSWBreakpoints(void)
 332 {
 333     ULONG i,ulAddress;
 334     PDEBUG_MODULE pMod;
 335     PSW_BP p;
 336
 337     DPRINT((0,"TryToInstallVirtualSWBreakpoints()\n"));
 338
 339     for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(SW_BP));i++)
 340     {
 341                 p = &aSwBreakpoints[i];
 342         if(p->bUsed == TRUE && p->bVirtual)
 343         {
 344             if((pMod = IsModuleLoaded(p->szModName)))
 345             {
 346                 if((ulAddress = FindFunctionInModuleByName(p->szFunctionName,pMod)))
 347                 {
 348                     if((p = FindVirtualSwBp(p->szModName,p->szFunctionName)))
 349                     {
 350                                                 ULONG ulAddressWithOffset = ulAddress+p->ulAddress;
 351                                                 DPRINT((0,"TryToInstallVirtualSWBreakpoints(): ulAddressWithOffset = %x (offset = %x)\n",ulAddressWithOffset,p->ulAddress));
 352
 353                         if(IsAddressValid(ulAddressWithOffset))
 354                         {
 355                                                         BOOLEAN isWriteable;
 356                                                         DPRINT((0,"TryToInstallVirtualSWBreakpoints(): installing...\n"));
 357                             p->ucOriginalOpcode = *(PUCHAR)ulAddressWithOffset;
 358                                                         //allow writing to page
 359                                                         if( !( isWriteable = IsAddressWriteable(ulAddressWithOffset) ) )
 360                                                                 SetAddressWriteable(ulAddressWithOffset,TRUE);
 361                             *(PUCHAR)ulAddressWithOffset = 0xCC;
 362                                                         if( !isWriteable )
 363                                                                 SetAddressWriteable(ulAddressWithOffset,FALSE);
 364                             p->bUsed = TRUE;
 365                             p->bInstalled = TRUE;
 366                             p->bVirtual = FALSE;
 367                             // find next address
 368                             p->ulAddress = ulAddressWithOffset;
 369                             Disasm(&ulAddressWithOffset,(PUCHAR)&tempBp);
 370                             p->ulNextInstr = ulAddressWithOffset;
 371                             p->bPermanent = FALSE;
 372                                                 p->Callback = NULL;
 373                         }
 374                         else
 375                         {
 376                             DPRINT((0,"TryToInstallVirtualSWBreakpoints(): not valid address\n"));
 377                             PICE_memset(p,0,sizeof(*p));
 378                         }
 379                     }
 380
 381                 }
 382             }
 383         }
 384     }
 385 }
 386
 387 //*************************************************************************
 388 // RemoveSWBreakpoint()
 389 //
 390 // removes breakpoint from breakpoint list
 391 //*************************************************************************
 392 BOOLEAN RemoveSWBreakpoint(ULONG ulAddress)
 393 {
 394     PSW_BP p;
 395     BOOLEAN bResult = FALSE;
 396
 397     ENTER_FUNC();
 398     DPRINT((0,"RemoveSWBreakpoint()\n"));
 399
 400     if( (p = FindSwBp(ulAddress)) )
 401     {
 402         if(IsAddressValid(ulAddress) && p->bInstalled == TRUE && p->bVirtual==FALSE)
 403         {
 404                         BOOLEAN isWriteable;
 405                         if( !( isWriteable = IsAddressWriteable(ulAddress) ) )
 406                                 SetAddressWriteable(ulAddress,TRUE);
 407                     // restore original opcode
 408             *(PUCHAR)(p->ulAddress) = p->ucOriginalOpcode;
 409                         if( !isWriteable )
 410                                 SetAddressWriteable(ulAddress,FALSE);
 411         }
 412
 413         PICE_memset(p,0,sizeof(*p));
 414
 415         bResult = TRUE;
 416     }
 417
 418     LEAVE_FUNC();
 419
 420     return bResult;
 421 }
 422
 423
 424 //*************************************************************************
 425 // DeInstallSWBreakpoint()
 426 //
 427 //*************************************************************************
 428 BOOLEAN DeInstallSWBreakpoint(ULONG ulAddress)
 429 {
 430     PSW_BP p;
 431     BOOLEAN bResult = FALSE;
 432
 433     ENTER_FUNC();
 434     DPRINT((0,"DeInstallSWBreakpoint()\n"));
 435
 436     if( (p = FindSwBp(ulAddress)) )
 437     {
 438         if(IsAddressValid(ulAddress) && p->bInstalled == TRUE && p->bVirtual==FALSE)
 439         {
 440                         BOOLEAN isWriteable;
 441                         if( !( isWriteable = IsAddressWriteable(ulAddress) ) )
 442                                 SetAddressWriteable(ulAddress,TRUE);
 443             // restore original opcode
 444             *(PUCHAR)(p->ulAddress) = p->ucOriginalOpcode;
 445                         if( !isWriteable )
 446                                 SetAddressWriteable(ulAddress,FALSE);
 447         }
 448
 449         p->bInstalled = FALSE;
 450
 451         bResult = TRUE;
 452     }
 453
 454     LEAVE_FUNC();
 455
 456     return bResult;
 457 }
 458
 459 //*************************************************************************
 460 // RemoveAllSWBreakpoints()
 461 //
 462 //*************************************************************************
 463 BOOLEAN RemoveAllSWBreakpoints(BOOLEAN bEvenPermanents)
 464 {
 465     PSW_BP p;
 466     BOOLEAN bResult = FALSE;
 467     ULONG i;
 468
 469     ENTER_FUNC();
 470     DPRINT((0,"RemoveAllSWBreakpoint()\n"));
 471
 472     for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(SW_BP));i++)
 473     {
 474         p = &aSwBreakpoints[i];
 475         if(p->bUsed == TRUE)
 476         {
 477             if(bEvenPermanents)
 478             {
 479                 if(IsAddressValid(p->ulAddress) && p->bVirtual==FALSE)
 480                 {
 481                                         BOOLEAN isWriteable;
 482                                         if( !( isWriteable = IsAddressWriteable(p->ulAddress) ) )
 483                                                 SetAddressWriteable(p->ulAddress,TRUE);
 484                     *(PUCHAR)(p->ulAddress) = p->ucOriginalOpcode;
 485                                         if( !isWriteable )
 486                                                 SetAddressWriteable(p->ulAddress,FALSE);
 487                     bResult = TRUE;
 488                 }
 489                 PICE_memset(p,0,sizeof(*p));
 490             }
 491             else
 492             {
 493                 if(!p->bPermanent)
 494                 {
 495                     if(IsAddressValid(p->ulAddress) && p->bVirtual==FALSE)
 496                     {
 497                                                 BOOLEAN isWriteable;
 498                                                 if( !( isWriteable = IsAddressWriteable(p->ulAddress) ) )
 499                                                         SetAddressWriteable(p->ulAddress,TRUE);
 500                         *(PUCHAR)(p->ulAddress) = p->ucOriginalOpcode;
 501                                                 if( !isWriteable )
 502                                                         SetAddressWriteable(p->ulAddress,FALSE);
 503                         bResult = TRUE;
 504                     }
 505                     PICE_memset(p,0,sizeof(*p));
 506                 }
 507             }
 508         }
 509     }
 510
 511     LEAVE_FUNC();
 512
 513     return bResult;
 514 }
 515
 516 //*************************************************************************
 517 // IsPermanentSWBreakpoint()
 518 //
 519 //*************************************************************************
 520 PSW_BP IsPermanentSWBreakpoint(ULONG ulAddress)
 521 {
 522     PSW_BP p;
 523     ULONG i;
 524
 525     ENTER_FUNC();
 526     DPRINT((0,"IsPermanentSWBreakpoint(%.8X)\n",ulAddress));
 527
 528     for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(aSwBreakpoints[0]));i++)
 529     {
 530         p = &aSwBreakpoints[i];
 531         if(p->ulAddress == ulAddress &&
 532            p->bUsed == TRUE &&
 533            p->bPermanent == TRUE)
 534         {
 535             LEAVE_FUNC();
 536             return p;
 537         }
 538     }
 539
 540     LEAVE_FUNC();
 541
 542     return NULL;
 543 }
 544
 545 //*************************************************************************
 546 // ListSWBreakpoints()
 547 //
 548 //*************************************************************************
 549 void ListSWBreakpoints(void)
 550 {
 551     PSW_BP p;
 552     ULONG i;
 553     LPSTR pSymbolName;
 554     PDEBUG_MODULE pMod;
 555
 556     ENTER_FUNC();
 557     DPRINT((0,"ListSWBreakpoints()\n"));
 558
 559     for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(SW_BP));i++)
 560     {
 561         p = &aSwBreakpoints[i];
 562         if(p->bUsed == TRUE && p->bVirtual == FALSE)
 563         {
 564             if((pSymbolName = FindFunctionByAddress(p->ulAddress,NULL,NULL)) )
 565             {
 566                 pMod = FindModuleFromAddress(p->ulAddress);
 567                 PICE_sprintf(tempBp,"[%u] %.8X (%S!%s) %s\n",i,p->ulAddress,pMod->name,pSymbolName,p->bPermanent?"PERMANENT":"");
 568             }
 569             else
 570             {
 571                 if(ScanExportsByAddress(&pSymbolName,p->ulAddress))
 572                     PICE_sprintf(tempBp,"[%u] %.8X (%s) %s\n",i,p->ulAddress,pSymbolName,p->bPermanent?"PERMANENT":"");
 573                 else
 574                     PICE_sprintf(tempBp,"[%u] %.8X (no symbol) %s\n",i,p->ulAddress,p->bPermanent?"PERMANENT":"");
 575             }
 576             Print(OUTPUT_WINDOW,tempBp);
 577         }
 578         else if(p->bUsed == TRUE)
 579         {
 580             PICE_sprintf(tempBp,"[%u] xxxxxxxx (%s!%s) VIRTUAL\n",i,p->szModName,p->szFunctionName);
 581             Print(OUTPUT_WINDOW,tempBp);
 582         }
 583     }
 584
 585     LEAVE_FUNC();
 586 }
 587
 588 //*************************************************************************
 589 // RevirtualizeBreakpointsForModule()
 590 //
 591 //*************************************************************************
 592 void RevirtualizeBreakpointsForModule(PDEBUG_MODULE pMod)
 593 {
 594     ULONG i,start,end;
 595     PSW_BP p;
 596         char temp[DEBUG_MODULE_NAME_LEN];
 597
 598     DPRINT((0,"RevirtualizeBreakpointsForModule(%x)\n",(ULONG)pMod));
 599
 600         if(IsRangeValid((ULONG)pMod,sizeof(DEBUG_MODULE)) )
 601     {
 602         start = (ULONG)pMod->BaseAddress;
 603         end = (ULONG)pMod->BaseAddress+pMod->size;
 604
 605                 DPRINT((0,"RevirtualizeBreakpointsForModule(): module %x (%x-%x)\n",(ULONG)pMod,start,end));
 606                 // go through all breakpoints
 607         for(i=0;i<(sizeof(aSwBreakpoints)/sizeof(SW_BP));i++)
 608         {
 609             p = &aSwBreakpoints[i];
 610                         // if it's used and installed and not virtual
 611             if(p->bUsed && p->bInstalled && p->bVirtual == FALSE)
 612             {
 613                                 // make sure we're in module's bound
 614                 if(p->ulAddress>=start && p->ulAddress<end)
 615                 {
 616                     LPSTR pFind;
 617                                         ULONG ulFunctionAddress;
 618
 619                                         DPRINT((0,"RevirtualizeBreakpointsForModule(): module breakpoint %u\n",i));
 620                                         // find the function in which this breakpoint resides
 621                     if(ScanExportsByAddress(&pFind,p->ulAddress))
 622                     {
 623                                                 // from now on it's virtual again
 624                         p->bVirtual = TRUE;
 625                                                 if(IsAddressValid(p->ulAddress) )
 626                                                 {
 627                                                         BOOLEAN isWriteable;
 628                                                         if( !( isWriteable = IsAddressWriteable(p->ulAddress) ) )
 629                                                                 SetAddressWriteable(p->ulAddress,TRUE);
 630                                                     DPRINT((0,"RevirtualizeBreakpointsForModule(): restoring original opcode @ %x\n",p->ulAddress));
 631                                                         *(PUCHAR)(p->ulAddress) = p->ucOriginalOpcode;
 632                                                         if( !isWriteable )
 633                                                                 SetAddressWriteable(p->ulAddress,FALSE);
 634                                                 }
 635                                                 else
 636                                                 {
 637                                                     DPRINT((0,"RevirtualizeBreakpointsForModule(): could not restore original opcode @ %x\n",p->ulAddress));
 638                                                 }
 639                                                 // skip past the module separator
 640                         while(*pFind!='!')pFind++;
 641                         pFind++;
 642                                                 // remember the function and the module for reinstallation
 643                                                 CopyWideToAnsi(temp,pMod->name);
 644                                                 PICE_strcpy(p->szModName,temp);
 645                         PICE_strcpy(p->szFunctionName,pFind);
 646                                             DPRINT((0,"RevirtualizeBreakpointsForModule(): %s!%s\n",p->szModName,p->szFunctionName));
 647                                                 // if function name contains a '+' it's an offset
 648                                                 pFind = p->szFunctionName;
 649                                                 while(*pFind!=0)
 650                                                 {
 651                                                     DPRINT((0,"RevirtualizeBreakpointsForModule(): [1] %s\n",pFind));
 652                                                         // found any offset to function
 653                                                         if(*pFind=='+')
 654                                                         {
 655                                                                 *pFind=0;
 656                                                                 break;
 657                                                         }
 658                                                         pFind++;
 659                                                 }
 660
 661                                                 DPRINT((0,"RevirtualizeBreakpointsForModule(): [2] %s\n",p->szFunctionName));
 662                                                 if(ScanExports(p->szFunctionName,&ulFunctionAddress))
 663                                                 {
 664                                                         p->ulAddress -= ulFunctionAddress;
 665                                                         DPRINT((0,"RevirtualizeBreakpointsForModule(): [1] function @ %x offset = %x\n",ulFunctionAddress,p->ulAddress));
 666                                                 }
 667                                                 else
 668                                                 {
 669                                                         if((ulFunctionAddress = FindFunctionInModuleByName(p->szFunctionName,pMod)) )
 670                                                         {
 671                                                                 p->ulAddress -= ulFunctionAddress;
 672                                                                 DPRINT((0,"RevirtualizeBreakpointsForModule(): [2] function @ %x offset = %x\n",ulFunctionAddress,p->ulAddress));
 673                                                         }
 674                                                         else
 675                                                         {
 676                                                                 DPRINT((0,"RevirtualizeBreakpointsForModule(): Breakpoint %u could not be virtualized properly!\n",i));
 677                                                                 PICE_sprintf(tempBp,"Breakpoint %u could not be virtualized properly!\n",i);
 678                                                                 Print(OUTPUT_WINDOW,tempBp);
 679                                                         }
 680                                                 }
 681                     }
 682                     else
 683                     {
 684                                                 DPRINT((0,"RevirtualizeBreakpointsForModule(): function for %x not found!\n",p->ulAddress));
 685                         PICE_memset(p,0,sizeof(*p));
 686                     }
 687                 }
 688             }
 689         }
 690     }
 691 }
 692
 693 //*************************************************************************
 694 // NewInt3Handler()
 695 //
 696 //*************************************************************************
 697 __asm__ ("\n\t \
 698 NewInt3Handler:\n\t \
 699         pushl $" STR(REASON_INT3) "\n\t \
 700                 // call debugger loop\n\t \
 701                 jmp NewInt31Handler\n\t \
 702 ");
 703
 704
 705 //*************************************************************************
 706 // InstallInt3Hook()
 707 //
 708 //*************************************************************************
 709 void InstallInt3Hook(void)
 710 {
 711         ULONG LocalInt3Handler;
 712
 713         ENTER_FUNC();
 714         DPRINT((0,"enter InstallInt3Hook()...\n"));
 715
 716         MaskIrqs();
 717         if(!OldInt3Handler)
 718         {
 719                 PICE_memset(aSwBreakpoints,0,sizeof(aSwBreakpoints));
 720                 __asm__("mov $NewInt3Handler,%0"
 721                         :"=r" (LocalInt3Handler)
 722                         :
 723                         :"eax");
 724                 OldInt3Handler=SetGlobalInt(0x03,(ULONG)LocalInt3Handler);
 725         }
 726         UnmaskIrqs();
 727
 728         DPRINT((0,"leave InstallInt3Hook()...\n"));
 729     LEAVE_FUNC();
 730 }
 731
 732 //*************************************************************************
 733 // DeInstallInt3Hook()
 734 //
 735 //*************************************************************************
 736 void DeInstallInt3Hook(void)
 737 {
 738         ENTER_FUNC();
 739         DPRINT((0,"enter DeInstallInt3Hook()...\n"));
 740
 741         MaskIrqs();
 742         if(OldInt3Handler)
 743         {
 744         RemoveAllSWBreakpoints(TRUE);
 745                 SetGlobalInt(0x03,(ULONG)OldInt3Handler);
 746         OldInt3Handler=0;
 747         }
 748         UnmaskIrqs();
 749
 750         DPRINT((0,"leave DeInstallInt3Hook()...\n"));
 751     LEAVE_FUNC();
 752 }