debugger/winedbg.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2
   3 /* Wine internal debugger
   4  * Interface to Windows debugger API
   5  * Eric Pouech (c) 2000
   6  */
   7
   8 #include <stdlib.h>
   9 #include <stdarg.h>
  10 #include <stdio.h>
  11 #include <string.h>
  12 #include "debugger.h"
  13
  14 #include "thread.h"
  15 #include "file.h"
  16 #include "wincon.h"
  17 #include "wingdi.h"
  18 #include "winuser.h"
  19
  20 #include "winreg.h"
  21
  22 #ifdef DBG_need_heap
  23 HANDLE dbg_heap = 0;
  24 #endif
  25
  26 DBG_PROCESS*    DEBUG_CurrProcess = NULL;
  27 DBG_THREAD*     DEBUG_CurrThread = NULL;
  28 DWORD           DEBUG_CurrTid;
  29 DWORD           DEBUG_CurrPid;
  30 CONTEXT         DEBUG_context;
  31 int             curr_frame = 0;
  32 static char*    DEBUG_LastCmdLine = NULL;
  33
  34 static DBG_PROCESS* DEBUG_ProcessList = NULL;
  35 DBG_INTVAR DEBUG_IntVars[DBG_IV_LAST];
  36
  37 void    DEBUG_Output(int chn, const char* buffer, int len)
  38 {
  39     if (DBG_IVAR(ConChannelMask) & chn)
  40         WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buffer, len, NULL, NULL);
  41     if (DBG_IVAR(StdChannelMask) & chn)
  42         fwrite(buffer, len, 1, stderr);
  43 }
  44
  45 int     DEBUG_Printf(int chn, const char* format, ...)
  46 {
  47     char        buf[1024];
  48     va_list     valist;
  49     int         len;
  50
  51     va_start(valist, format);
  52     len = vsnprintf(buf, sizeof(buf), format, valist);
  53     va_end(valist);
  54
  55     if (len <= -1) {
  56         len = sizeof(buf) - 1;
  57         buf[len] = 0;
  58         buf[len - 1] = buf[len - 2] = buf[len - 3] = '.';
  59     }
  60     DEBUG_Output(chn, buf, len);
  61     return len;
  62 }
  63
  64 static  BOOL DEBUG_IntVarsRW(int read)
  65 {
  66     HKEY        hkey;
  67     DWORD       type = REG_DWORD;
  68     DWORD       val;
  69     DWORD       count = sizeof(val);
  70     int         i;
  71     DBG_INTVAR* div = DEBUG_IntVars;
  72
  73     if (read) {
  74 /* initializes internal vars table */
  75 #define  INTERNAL_VAR(_var,_val,_ref,_typ)                      \
  76         div->val = _val; div->name = #_var; div->pval = _ref;   \
  77         div->type = _typ; div++;
  78 #include "intvar.h"
  79 #undef   INTERNAL_VAR
  80     }
  81
  82     if (RegCreateKeyA(HKEY_CURRENT_USER, "Software\\Wine\\WineDbg", &hkey)) {
  83         /* since the IVars are not yet setup, DEBUG_Printf doesn't work,
  84          * so don't use it */
  85         fprintf(stderr, "Cannot create WineDbg key in registry\n");
  86         return FALSE;
  87     }
  88
  89     for (i = 0; i < DBG_IV_LAST; i++) {
  90         if (read) {
  91             if (!DEBUG_IntVars[i].pval) {
  92                 if (!RegQueryValueEx(hkey, DEBUG_IntVars[i].name, 0,
  93                                      &type, (LPSTR)&val, &count))
  94                     DEBUG_IntVars[i].val = val;
  95                 DEBUG_IntVars[i].pval = &DEBUG_IntVars[i].val;
  96             } else {
  97                 *DEBUG_IntVars[i].pval = 0;
  98             }
  99         } else {
 100             /* FIXME: type should be infered from basic type -if any- of intvar */
 101             if (DEBUG_IntVars[i].pval == &DEBUG_IntVars[i].val)
 102                 RegSetValueEx(hkey, DEBUG_IntVars[i].name, 0,
 103                               type, (LPCVOID)DEBUG_IntVars[i].pval, count);
 104         }
 105     }
 106     RegCloseKey(hkey);
 107     return TRUE;
 108 }
 109
 110 DBG_INTVAR*     DEBUG_GetIntVar(const char* name)
 111 {
 112     int         i;
 113
 114     for (i = 0; i < DBG_IV_LAST; i++) {
 115         if (!strcmp(DEBUG_IntVars[i].name, name))
 116             return &DEBUG_IntVars[i];
 117     }
 118     return NULL;
 119 }
 120
 121 static WINE_EXCEPTION_FILTER(wine_dbg)
 122 {
 123     DEBUG_Printf(DBG_CHN_MESG, "\nwine_dbg: Exception (%lx) inside debugger, continuing...\n", GetExceptionCode());
 124     DEBUG_ExternalDebugger();
 125     return EXCEPTION_EXECUTE_HANDLER;
 126 }
 127
 128 static  DBG_PROCESS*    DEBUG_GetProcess(DWORD pid)
 129 {
 130     DBG_PROCESS*        p;
 131
 132     for (p = DEBUG_ProcessList; p; p = p->next)
 133         if (p->pid == pid) break;
 134     return p;
 135 }
 136
 137 static  DBG_PROCESS*    DEBUG_AddProcess(DWORD pid, HANDLE h)
 138 {
 139     DBG_PROCESS*        p = DBG_alloc(sizeof(DBG_PROCESS));
 140     if (!p)
 141         return NULL;
 142     p->handle = h;
 143     p->pid = pid;
 144     p->threads = NULL;
 145     p->num_threads = 0;
 146     p->continue_on_first_exception = FALSE;
 147     p->modules = NULL;
 148     p->next_index = 0;
 149     p->dbg_hdr_addr = 0;
 150
 151     p->next = DEBUG_ProcessList;
 152     p->prev = NULL;
 153     if (DEBUG_ProcessList) DEBUG_ProcessList->prev = p;
 154     DEBUG_ProcessList = p;
 155     return p;
 156 }
 157
 158 static  void                    DEBUG_DelThread(DBG_THREAD* p);
 159
 160 static  void                    DEBUG_DelProcess(DBG_PROCESS* p)
 161 {
 162     if (p->threads != NULL) {
 163         DEBUG_Printf(DBG_CHN_ERR, "Shouldn't happen\n");
 164         while (p->threads) DEBUG_DelThread(p->threads);
 165     }
 166     if (p->prev) p->prev->next = p->next;
 167     if (p->next) p->next->prev = p->prev;
 168     if (p == DEBUG_ProcessList) DEBUG_ProcessList = p->next;
 169     if (p == DEBUG_CurrProcess) DEBUG_CurrProcess = NULL;
 170     DBG_free(p);
 171 }
 172
 173 static  void                    DEBUG_InitCurrProcess(void)
 174 {
 175 }
 176
 177 static BOOL DEBUG_ProcessGetString(char* buffer, int size, HANDLE hp, LPSTR addr)
 178 {
 179     DWORD sz;
 180     *(WCHAR*)buffer = 0;
 181     return (addr && ReadProcessMemory(hp, addr, buffer, size, &sz));
 182 }
 183
 184 static BOOL DEBUG_ProcessGetStringIndirect(char* buffer, int size, HANDLE hp, LPVOID addr)
 185 {
 186     LPVOID      ad;
 187     DWORD       sz;
 188
 189     if (   addr
 190         && ReadProcessMemory(hp, addr, &ad, sizeof(ad), &sz)
 191         && sz == sizeof(ad)
 192         && ad
 193         && ReadProcessMemory(hp, ad, buffer, size, &sz))
 194         return TRUE;
 195     *(WCHAR*)buffer = 0;
 196     return FALSE;
 197 }
 198
 199 static  DBG_THREAD*     DEBUG_GetThread(DBG_PROCESS* p, DWORD tid)
 200 {
 201     DBG_THREAD* t;
 202
 203     for (t = p->threads; t; t = t->next)
 204         if (t->tid == tid) break;
 205     return t;
 206 }
 207
 208 static  DBG_THREAD*     DEBUG_AddThread(DBG_PROCESS* p, DWORD tid,
 209                                         HANDLE h, LPVOID start, LPVOID teb)
 210 {
 211     DBG_THREAD* t = DBG_alloc(sizeof(DBG_THREAD));
 212     if (!t)
 213         return NULL;
 214
 215     t->handle = h;
 216     t->tid = tid;
 217     t->start = start;
 218     t->teb = teb;
 219     t->process = p;
 220     t->wait_for_first_exception = 0;
 221     t->dbg_exec_mode = EXEC_CONT;
 222     t->dbg_exec_count = 0;
 223
 224     p->num_threads++;
 225     t->next = p->threads;
 226     t->prev = NULL;
 227     if (p->threads) p->threads->prev = t;
 228     p->threads = t;
 229
 230     return t;
 231 }
 232
 233 static  void                    DEBUG_InitCurrThread(void)
 234 {
 235     if (DEBUG_CurrThread->start) {
 236         if (DEBUG_CurrThread->process->num_threads == 1 ||
 237             DBG_IVAR(BreakAllThreadsStartup)) {
 238             DBG_VALUE   value;
 239
 240             DEBUG_SetBreakpoints(FALSE);
 241             value.type = NULL;
 242             value.cookie = DV_TARGET;
 243             value.addr.seg = 0;
 244             value.addr.off = (DWORD)DEBUG_CurrThread->start;
 245             DEBUG_AddBreakpoint(&value, NULL);
 246             DEBUG_SetBreakpoints(TRUE);
 247         }
 248     } else {
 249         DEBUG_CurrThread->wait_for_first_exception = 1;
 250     }
 251 }
 252
 253 static  void                    DEBUG_DelThread(DBG_THREAD* t)
 254 {
 255     if (t->prev) t->prev->next = t->next;
 256     if (t->next) t->next->prev = t->prev;
 257     if (t == t->process->threads) t->process->threads = t->next;
 258     t->process->num_threads--;
 259     if (t == DEBUG_CurrThread) DEBUG_CurrThread = NULL;
 260     DBG_free(t);
 261 }
 262
 263 BOOL                            DEBUG_Attach(DWORD pid, BOOL cofe)
 264 {
 265     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(pid, 0))) return FALSE;
 266
 267     if (!DebugActiveProcess(pid)) {
 268         DEBUG_Printf(DBG_CHN_ERR, "Can't attach process %ld: %ld\n",
 269                      pid, GetLastError());
 270         return FALSE;
 271     }
 272     DEBUG_CurrProcess->continue_on_first_exception = cofe;
 273     return TRUE;
 274 }
 275
 276 static  BOOL    DEBUG_ExceptionProlog(BOOL is_debug, BOOL force, DWORD code)
 277 {
 278     DBG_ADDR    addr;
 279     int         newmode;
 280
 281     DEBUG_GetCurrentAddress(&addr);
 282     DEBUG_SuspendExecution();
 283
 284     if (!is_debug) {
 285 #ifdef __i386__
 286         if (DEBUG_IsSelectorSystem(DEBUG_context.SegCs))
 287             DEBUG_Printf(DBG_CHN_MESG, " in 32-bit code (0x%08lx).\n", addr.off);
 288         else
 289             DEBUG_Printf(DBG_CHN_MESG, " in 16-bit code (%04x:%04lx).\n",
 290                          LOWORD(addr.seg), addr.off);
 291 #else
 292         DEBUG_Printf(DBG_CHN_MESG, " (0x%08lx).\n", addr.off);
 293 #endif
 294     }
 295
 296     DEBUG_LoadEntryPoints("Loading new modules symbols:\n");
 297
 298     if (!force && is_debug &&
 299         DEBUG_ShouldContinue(&addr,
 300                              code,
 301                              DEBUG_CurrThread->dbg_exec_mode,
 302                              &DEBUG_CurrThread->dbg_exec_count))
 303         return FALSE;
 304
 305 #ifdef __i386__
 306     switch (newmode = DEBUG_GetSelectorType(addr.seg)) {
 307     case 16: case 32: break;
 308     default: DEBUG_Printf(DBG_CHN_MESG, "Bad CS (%ld)\n", addr.seg); newmode = 32;
 309     }
 310 #else
 311     newmode = 32;
 312 #endif
 313     if (newmode != DEBUG_CurrThread->dbg_mode)
 314         DEBUG_Printf(DBG_CHN_MESG,"In %d bit mode.\n", DEBUG_CurrThread->dbg_mode = newmode);
 315
 316     DEBUG_DoDisplay();
 317
 318     if (is_debug || force) {
 319         /*
 320          * Do a quiet backtrace so that we have an idea of what the situation
 321          * is WRT the source files.
 322          */
 323         DEBUG_BackTrace(FALSE);
 324     } else {
 325         /* This is a real crash, dump some info */
 326         DEBUG_InfoRegisters();
 327         DEBUG_InfoStack();
 328 #ifdef __i386__
 329         if (DEBUG_CurrThread->dbg_mode == 16) {
 330             DEBUG_InfoSegments(DEBUG_context.SegDs >> 3, 1);
 331             if (DEBUG_context.SegEs != DEBUG_context.SegDs)
 332                 DEBUG_InfoSegments(DEBUG_context.SegEs >> 3, 1);
 333         }
 334         DEBUG_InfoSegments(DEBUG_context.SegFs >> 3, 1);
 335 #endif
 336         DEBUG_BackTrace(TRUE);
 337     }
 338
 339     if (!is_debug ||
 340         (DEBUG_CurrThread->dbg_exec_mode == EXEC_STEPI_OVER) ||
 341         (DEBUG_CurrThread->dbg_exec_mode == EXEC_STEPI_INSTR)) {
 342
 343         struct list_id list;
 344
 345         /* Show where we crashed */
 346         curr_frame = 0;
 347         DEBUG_DisassembleInstruction(&addr);
 348
 349         /* resets list internal arguments so we can look at source code when needed */
 350         DEBUG_FindNearestSymbol(&addr, TRUE, NULL, 0, &list);
 351         if (list.sourcefile) DEBUG_List(&list, NULL, 0);
 352     }
 353     return TRUE;
 354 }
 355
 356 static  DWORD   DEBUG_ExceptionEpilog(void)
 357 {
 358     DEBUG_CurrThread->dbg_exec_mode = DEBUG_RestartExecution(DEBUG_CurrThread->dbg_exec_mode,
 359                                                              DEBUG_CurrThread->dbg_exec_count);
 360     /*
 361      * This will have gotten absorbed into the breakpoint info
 362      * if it was used.  Otherwise it would have been ignored.
 363      * In any case, we don't mess with it any more.
 364      */
 365     if (DEBUG_CurrThread->dbg_exec_mode == EXEC_CONT || DEBUG_CurrThread->dbg_exec_mode == EXEC_PASS)
 366         DEBUG_CurrThread->dbg_exec_count = 0;
 367
 368     return (DEBUG_CurrThread->dbg_exec_mode == EXEC_PASS) ? DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE;
 369 }
 370
 371 static  BOOL    DEBUG_HandleException(EXCEPTION_RECORD *rec, BOOL first_chance, BOOL force, LPDWORD cont)
 372 {
 373     BOOL        is_debug = FALSE;
 374     BOOL        ret = TRUE;
 375
 376     *cont = DBG_CONTINUE;
 377     if (first_chance && !force && !DBG_IVAR(BreakOnFirstChance)) return TRUE;
 378
 379     switch (rec->ExceptionCode)
 380     {
 381     case EXCEPTION_BREAKPOINT:
 382     case EXCEPTION_SINGLE_STEP:
 383         is_debug = TRUE;
 384         break;
 385     }
 386
 387     if (!is_debug)
 388     {
 389         /* print some infos */
 390         DEBUG_Printf(DBG_CHN_MESG, "%s: ",
 391                       first_chance ? "First chance exception" : "Unhandled exception");
 392         switch (rec->ExceptionCode)
 393         {
 394         case EXCEPTION_INT_DIVIDE_BY_ZERO:
 395             DEBUG_Printf(DBG_CHN_MESG, "divide by zero");
 396             break;
 397         case EXCEPTION_INT_OVERFLOW:
 398             DEBUG_Printf(DBG_CHN_MESG, "overflow");
 399             break;
 400         case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 401             DEBUG_Printf(DBG_CHN_MESG, "array bounds ");
 402             break;
 403         case EXCEPTION_ILLEGAL_INSTRUCTION:
 404             DEBUG_Printf(DBG_CHN_MESG, "illegal instruction");
 405             break;
 406         case EXCEPTION_STACK_OVERFLOW:
 407             DEBUG_Printf(DBG_CHN_MESG, "stack overflow");
 408             break;
 409         case EXCEPTION_PRIV_INSTRUCTION:
 410             DEBUG_Printf(DBG_CHN_MESG, "priviledged instruction");
 411             break;
 412         case EXCEPTION_ACCESS_VIOLATION:
 413             if (rec->NumberParameters == 2)
 414                 DEBUG_Printf(DBG_CHN_MESG, "page fault on %s access to 0x%08lx",
 415                               rec->ExceptionInformation[0] ? "write" : "read",
 416                               rec->ExceptionInformation[1]);
 417             else
 418                 DEBUG_Printf(DBG_CHN_MESG, "page fault");
 419             break;
 420         case EXCEPTION_DATATYPE_MISALIGNMENT:
 421             DEBUG_Printf(DBG_CHN_MESG, "Alignment");
 422             break;
 423         case CONTROL_C_EXIT:
 424             DEBUG_Printf(DBG_CHN_MESG, "^C");
 425             break;
 426         case EXCEPTION_CRITICAL_SECTION_WAIT:
 427             DEBUG_Printf(DBG_CHN_MESG, "critical section %08lx wait failed",
 428                           rec->ExceptionInformation[0]);
 429             if (!DBG_IVAR(BreakOnCritSectTimeOut))
 430                 return TRUE;
 431             break;
 432         default:
 433             DEBUG_Printf(DBG_CHN_MESG, "%08lx", rec->ExceptionCode);
 434             break;
 435         }
 436         DEBUG_Printf(DBG_CHN_MESG, "\n");
 437     }
 438
 439     DEBUG_Printf(DBG_CHN_TRACE,
 440                  "Entering debugger     PC=%lx EFL=%08lx mode=%d count=%d\n",
 441 #ifdef __i386__
 442                  DEBUG_context.Eip, DEBUG_context.EFlags,
 443 #else
 444                  0L, 0L,
 445 #endif
 446                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 447
 448     if (DEBUG_ExceptionProlog(is_debug, force, rec->ExceptionCode)) {
 449         while ((ret = DEBUG_Parser())) {
 450             if (DEBUG_ValidateRegisters()) {
 451                 if (DEBUG_CurrThread->dbg_exec_mode != EXEC_PASS || first_chance)
 452                     break;
 453                 DEBUG_Printf(DBG_CHN_MESG, "Cannot pass on last chance exception. You must use cont\n");
 454             }
 455         }
 456     }
 457     *cont = DEBUG_ExceptionEpilog();
 458
 459     DEBUG_Printf(DBG_CHN_TRACE,
 460                  "Exiting debugger      PC=%lx EFL=%08lx mode=%d count=%d\n",
 461 #ifdef __i386__
 462                  DEBUG_context.Eip, DEBUG_context.EFlags,
 463 #else
 464                  0L, 0L,
 465 #endif
 466                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 467
 468     return ret;
 469 }
 470
 471 static  BOOL    DEBUG_HandleDebugEvent(DEBUG_EVENT* de, LPDWORD cont)
 472 {
 473     char                buffer[256];
 474     BOOL                ret;
 475
 476     DEBUG_CurrPid = de->dwProcessId;
 477     DEBUG_CurrTid = de->dwThreadId;
 478
 479     __TRY {
 480         ret = TRUE;
 481         *cont = 0L;
 482
 483         if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL)
 484             DEBUG_CurrThread = DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId);
 485         else
 486             DEBUG_CurrThread = NULL;
 487
 488         switch (de->dwDebugEventCode) {
 489         case EXCEPTION_DEBUG_EVENT:
 490             if (!DEBUG_CurrThread) {
 491                 DEBUG_Printf(DBG_CHN_ERR, "%08lx:%08lx: not a registered process or thread (perhaps a 16 bit one ?)\n",
 492                              de->dwProcessId, de->dwThreadId);
 493                 break;
 494             }
 495
 496             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exception code=%08lx\n",
 497                          de->dwProcessId, de->dwThreadId,
 498                          de->u.Exception.ExceptionRecord.ExceptionCode);
 499
 500             if (DEBUG_CurrProcess->continue_on_first_exception) {
 501                 DEBUG_CurrProcess->continue_on_first_exception = FALSE;
 502                 if (!DBG_IVAR(BreakOnAttach)) {
 503                     *cont = DBG_CONTINUE;
 504                     break;
 505                 }
 506             }
 507
 508             DEBUG_context.ContextFlags =  CONTEXT_CONTROL
 509                                         | CONTEXT_INTEGER
 510 #ifdef CONTEXT_SEGMENTS
 511                                         | CONTEXT_SEGMENTS
 512 #endif
 513 #ifdef CONTEXT_DEBUG_REGISTERS
 514                                         | CONTEXT_DEBUG_REGISTERS
 515 #endif
 516                                         ;
 517
 518             if (!GetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context)) {
 519                 DEBUG_Printf(DBG_CHN_WARN, "Can't get thread's context\n");
 520                 break;
 521             }
 522
 523             ret = DEBUG_HandleException(&de->u.Exception.ExceptionRecord,
 524                                         de->u.Exception.dwFirstChance,
 525                                         DEBUG_CurrThread->wait_for_first_exception,
 526                                         cont);
 527             if (DEBUG_CurrThread) {
 528                 DEBUG_CurrThread->wait_for_first_exception = 0;
 529                 SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
 530             }
 531             break;
 532
 533         case CREATE_THREAD_DEBUG_EVENT:
 534             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread D @%08lx\n", de->dwProcessId, de->dwThreadId,
 535                          (unsigned long)(LPVOID)de->u.CreateThread.lpStartAddress);
 536
 537             if (DEBUG_CurrProcess == NULL) {
 538                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 539                 break;
 540             }
 541             if (DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId) != NULL) {
 542                 DEBUG_Printf(DBG_CHN_TRACE, "Thread already listed, skipping\n");
 543                 break;
 544             }
 545
 546             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 547                                                de->dwThreadId,
 548                                                de->u.CreateThread.hThread,
 549                                                de->u.CreateThread.lpStartAddress,
 550                                                de->u.CreateThread.lpThreadLocalBase);
 551             if (!DEBUG_CurrThread) {
 552                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 553                 break;
 554             }
 555             DEBUG_InitCurrThread();
 556             break;
 557
 558         case CREATE_PROCESS_DEBUG_EVENT:
 559             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 560                                            de->u.CreateProcessInfo.hProcess,
 561                                            de->u.CreateProcessInfo.lpImageName);
 562
 563             /* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
 564             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create process %s @%08lx (%ld<%ld>)\n",
 565                          de->dwProcessId, de->dwThreadId,
 566                          buffer,
 567                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress,
 568                          de->u.CreateProcessInfo.dwDebugInfoFileOffset,
 569                          de->u.CreateProcessInfo.nDebugInfoSize);
 570
 571             if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL) {
 572                 if (DEBUG_CurrProcess->handle) {
 573                     DEBUG_Printf(DBG_CHN_ERR, "Skipping already defined process\n");
 574                     break;
 575                 }
 576                 DEBUG_CurrProcess->handle = de->u.CreateProcessInfo.hProcess;
 577             } else {
 578                 DEBUG_CurrProcess = DEBUG_AddProcess(de->dwProcessId,
 579                                                      de->u.CreateProcessInfo.hProcess);
 580                 if (DEBUG_CurrProcess == NULL) {
 581                     DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 582                     break;
 583                 }
 584             }
 585
 586             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread I @%08lx\n",
 587                          de->dwProcessId, de->dwThreadId,
 588                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress);
 589
 590             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 591                                                de->dwThreadId,
 592                                                de->u.CreateProcessInfo.hThread,
 593                                                de->u.CreateProcessInfo.lpStartAddress,
 594                                                de->u.CreateProcessInfo.lpThreadLocalBase);
 595             if (!DEBUG_CurrThread) {
 596                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 597                 break;
 598             }
 599
 600             DEBUG_InitCurrProcess();
 601             DEBUG_InitCurrThread();
 602
 603             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 604                                            DEBUG_CurrThread->process->handle,
 605                                            de->u.CreateProcessInfo.lpImageName);
 606             DEBUG_LoadModule32(buffer[0] ? buffer : "<Debugged process>",
 607                                de->u.CreateProcessInfo.hFile,
 608                                (DWORD)de->u.CreateProcessInfo.lpBaseOfImage);
 609
 610             if (buffer[0])  /* we got a process name */
 611             {
 612                 DWORD type;
 613                 if (!GetBinaryTypeA( buffer, &type ))
 614                 {
 615                     /* not a Windows binary, assume it's a Unix executable then */
 616                     DOS_FULL_NAME fullname;
 617                     /* HACK!! should fix DEBUG_ReadExecutableDbgInfo to accept DOS filenames */
 618                     if (DOSFS_GetFullName( buffer, TRUE, &fullname ))
 619                     {
 620                         DEBUG_ReadExecutableDbgInfo( fullname.long_name );
 621                         break;
 622                     }
 623                 }
 624             }
 625             /* if it is a Windows binary, or an invalid or missing file name,
 626              * we use wine itself as the main executable */
 627             DEBUG_ReadExecutableDbgInfo( "wine" );
 628             break;
 629
 630         case EXIT_THREAD_DEBUG_EVENT:
 631             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit thread (%ld)\n",
 632                          de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
 633
 634             if (DEBUG_CurrThread == NULL) {
 635                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 636                 break;
 637             }
 638             /* FIXME: remove break point set on thread startup */
 639             DEBUG_DelThread(DEBUG_CurrThread);
 640             break;
 641
 642         case EXIT_PROCESS_DEBUG_EVENT:
 643             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit process (%ld)\n",
 644                          de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
 645
 646             if (DEBUG_CurrProcess == NULL) {
 647                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 648                 break;
 649             }
 650             /* just in case */
 651             DEBUG_SetBreakpoints(FALSE);
 652             /* kill last thread */
 653             DEBUG_DelThread(DEBUG_CurrProcess->threads);
 654             DEBUG_DelProcess(DEBUG_CurrProcess);
 655
 656             DEBUG_Printf(DBG_CHN_MESG, "Process of pid=%08lx has terminated\n", DEBUG_CurrPid);
 657             break;
 658
 659         case LOAD_DLL_DEBUG_EVENT:
 660             if (DEBUG_CurrThread == NULL) {
 661                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 662                 break;
 663             }
 664             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 665                                            DEBUG_CurrThread->process->handle,
 666                                            de->u.LoadDll.lpImageName);
 667
 668             /* FIXME unicode: de->u.LoadDll.fUnicode */
 669             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
 670                          de->dwProcessId, de->dwThreadId,
 671                          buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
 672                          de->u.LoadDll.dwDebugInfoFileOffset,
 673                          de->u.LoadDll.nDebugInfoSize);
 674             CharUpper(buffer);
 675             DEBUG_LoadModule32(buffer, de->u.LoadDll.hFile, (DWORD)de->u.LoadDll.lpBaseOfDll);
 676             if (DBG_IVAR(BreakOnDllLoad)) {
 677                 DEBUG_Printf(DBG_CHN_MESG, "Stopping on DLL %s loading at %08lx\n",
 678                              buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll);
 679                 ret = DEBUG_Parser();
 680             }
 681             break;
 682
 683         case UNLOAD_DLL_DEBUG_EVENT:
 684             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unload DLL @%08lx\n", de->dwProcessId, de->dwThreadId,
 685                          (unsigned long)de->u.UnloadDll.lpBaseOfDll);
 686             break;
 687
 688         case OUTPUT_DEBUG_STRING_EVENT:
 689             if (DEBUG_CurrThread == NULL) {
 690                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 691                 break;
 692             }
 693
 694             DEBUG_ProcessGetString(buffer, sizeof(buffer),
 695                                    DEBUG_CurrThread->process->handle,
 696                                    de->u.DebugString.lpDebugStringData);
 697
 698             /* fixme unicode de->u.DebugString.fUnicode ? */
 699             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: output debug string (%s)\n",
 700                          de->dwProcessId, de->dwThreadId, buffer);
 701             break;
 702
 703         case RIP_EVENT:
 704             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: rip error=%ld type=%ld\n",
 705                          de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
 706                          de->u.RipInfo.dwType);
 707             break;
 708
 709         default:
 710             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unknown event (%ld)\n",
 711                          de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
 712         }
 713
 714     } __EXCEPT(wine_dbg) {
 715         *cont = 0;
 716         ret = TRUE;
 717     }
 718     __ENDTRY;
 719     return ret;
 720 }
 721
 722 static  DWORD   DEBUG_MainLoop(void)
 723 {
 724     DEBUG_EVENT         de;
 725     DWORD               cont;
 726     BOOL                ret;
 727
 728     DEBUG_Printf(DBG_CHN_MESG, " on pid %ld\n", DEBUG_CurrPid);
 729
 730     for (ret = TRUE; ret; ) {
 731         /* wait until we get at least one loaded process */
 732         while (!DEBUG_ProcessList && (ret = DEBUG_Parser()));
 733         if (!ret) break;
 734
 735         while (ret && DEBUG_ProcessList && WaitForDebugEvent(&de, INFINITE)) {
 736             ret = DEBUG_HandleDebugEvent(&de, &cont);
 737             ContinueDebugEvent(de.dwProcessId, de.dwThreadId, cont);
 738         }
 739     };
 740
 741     DEBUG_Printf(DBG_CHN_MESG, "WineDbg terminated on pid %ld\n", DEBUG_CurrPid);
 742
 743     return 0;
 744 }
 745
 746 static  BOOL    DEBUG_Start(LPSTR cmdLine)
 747 {
 748     PROCESS_INFORMATION info;
 749     STARTUPINFOA        startup;
 750
 751     memset(&startup, 0, sizeof(startup));
 752     startup.cb = sizeof(startup);
 753     startup.dwFlags = STARTF_USESHOWWINDOW;
 754     startup.wShowWindow = SW_SHOWNORMAL;
 755
 756     if (!CreateProcess(NULL, cmdLine, NULL, NULL,
 757                        FALSE, DEBUG_PROCESS, NULL, NULL, &startup, &info)) {
 758         DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 759         return FALSE;
 760     }
 761     DEBUG_CurrPid = info.dwProcessId;
 762     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(DEBUG_CurrPid, 0))) return FALSE;
 763
 764     return TRUE;
 765 }
 766
 767 void    DEBUG_Run(const char* args)
 768 {
 769     DBG_MODULE* wmod = DEBUG_GetProcessMainModule(DEBUG_CurrProcess);
 770     const char* pgm = (wmod) ? wmod->module_name : "none";
 771
 772     if (args) {
 773         DEBUG_Printf(DBG_CHN_MESG, "Run (%s) with '%s'\n", pgm, args);
 774     } else {
 775         if (!DEBUG_LastCmdLine) {
 776             DEBUG_Printf(DBG_CHN_MESG, "Cannot find previously used command line.\n");
 777             return;
 778         }
 779         DEBUG_Start(DEBUG_LastCmdLine);
 780     }
 781 }
 782
 783 int DEBUG_main(int argc, char** argv)
 784 {
 785     DWORD       retv = 0;
 786
 787 #ifdef DBG_need_heap
 788     /* Initialize the debugger heap. */
 789     dbg_heap = HeapCreate(HEAP_NO_SERIALIZE, 0x1000, 0x8000000); /* 128MB */
 790 #endif
 791
 792     /* Initialize the type handling stuff. */
 793     DEBUG_InitTypes();
 794     DEBUG_InitCVDataTypes();
 795
 796     /* Initialize internal vars (types must be initialized before) */
 797     if (!DEBUG_IntVarsRW(TRUE)) return -1;
 798
 799     /* keep it as a guiexe for now, so that Wine won't touch the Unix stdin,
 800      * stdout and stderr streams
 801      */
 802     if (DBG_IVAR(UseXTerm)) {
 803         COORD           pos;
 804
 805         /* This is a hack: it forces creation of an xterm, not done by default */
 806         pos.X = 0; pos.Y = 1;
 807         SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
 808     }
 809
 810     DEBUG_Printf(DBG_CHN_MESG, "Starting WineDbg... ");
 811
 812     if (argc == 3) {
 813         HANDLE  hEvent;
 814         DWORD   pid;
 815
 816         if ((pid = atoi(argv[1])) != 0 && (hEvent = atoi(argv[2])) != 0) {
 817             BOOL        ret = DEBUG_Attach(pid, TRUE);
 818
 819             SetEvent(hEvent);
 820             CloseHandle(hEvent);
 821             if (!ret) {
 822                 DEBUG_Printf(DBG_CHN_ERR, "Can't attach process %ld: %ld\n",
 823                              DEBUG_CurrPid, GetLastError());
 824                 goto leave;
 825             }
 826             DEBUG_CurrPid = pid;
 827         }
 828     }
 829
 830     if (DEBUG_CurrPid == 0 && argc > 1) {
 831         int     i, len;
 832         LPSTR   cmdLine;
 833
 834         if (!(cmdLine = DBG_alloc(len = 1))) goto oom_leave;
 835         cmdLine[0] = '\0';
 836
 837         for (i = 1; i < argc; i++) {
 838             len += strlen(argv[i]) + 1;
 839             if (!(cmdLine = DBG_realloc(cmdLine, len))) goto oom_leave;
 840             strcat(cmdLine, argv[i]);
 841             cmdLine[len - 2] = ' ';
 842             cmdLine[len - 1] = '\0';
 843         }
 844
 845         if (!DEBUG_Start(cmdLine)) {
 846             DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 847             goto leave;
 848         }
 849         DBG_free(DEBUG_LastCmdLine);
 850         DEBUG_LastCmdLine = cmdLine;
 851     }
 852
 853     retv = DEBUG_MainLoop();
 854  leave:
 855     /* saves modified variables */
 856     DEBUG_IntVarsRW(FALSE);
 857
 858     return retv;
 859
 860  oom_leave:
 861     DEBUG_Printf(DBG_CHN_MESG, "Out of memory\n");
 862     goto leave;
 863 }