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(code,
 300                              DEBUG_CurrThread->dbg_exec_mode,
 301                              &DEBUG_CurrThread->dbg_exec_count))
 302         return FALSE;
 303
 304 #ifdef __i386__
 305     switch (newmode = DEBUG_GetSelectorType(addr.seg)) {
 306     case 16: case 32: break;
 307     default: DEBUG_Printf(DBG_CHN_MESG, "Bad CS (%ld)\n", addr.seg); newmode = 32;
 308     }
 309 #else
 310     newmode = 32;
 311 #endif
 312     if (newmode != DEBUG_CurrThread->dbg_mode)
 313         DEBUG_Printf(DBG_CHN_MESG,"In %d bit mode.\n", DEBUG_CurrThread->dbg_mode = newmode);
 314
 315     DEBUG_DoDisplay();
 316
 317     if (is_debug || force) {
 318         /*
 319          * Do a quiet backtrace so that we have an idea of what the situation
 320          * is WRT the source files.
 321          */
 322         DEBUG_BackTrace(FALSE);
 323     } else {
 324         /* This is a real crash, dump some info */
 325         DEBUG_InfoRegisters();
 326         DEBUG_InfoStack();
 327 #ifdef __i386__
 328         if (DEBUG_CurrThread->dbg_mode == 16) {
 329             DEBUG_InfoSegments(DEBUG_context.SegDs >> 3, 1);
 330             if (DEBUG_context.SegEs != DEBUG_context.SegDs)
 331                 DEBUG_InfoSegments(DEBUG_context.SegEs >> 3, 1);
 332         }
 333         DEBUG_InfoSegments(DEBUG_context.SegFs >> 3, 1);
 334 #endif
 335         DEBUG_BackTrace(TRUE);
 336     }
 337
 338     if (!is_debug ||
 339         (DEBUG_CurrThread->dbg_exec_mode == EXEC_STEPI_OVER) ||
 340         (DEBUG_CurrThread->dbg_exec_mode == EXEC_STEPI_INSTR)) {
 341
 342         struct list_id list;
 343
 344         /* Show where we crashed */
 345         curr_frame = 0;
 346         DEBUG_DisassembleInstruction(&addr);
 347
 348         /* resets list internal arguments so we can look at source code when needed */
 349         DEBUG_FindNearestSymbol(&addr, TRUE, NULL, 0, &list);
 350         if (list.sourcefile) DEBUG_List(&list, NULL, 0);
 351     }
 352     return TRUE;
 353 }
 354
 355 static  DWORD   DEBUG_ExceptionEpilog(void)
 356 {
 357     DEBUG_CurrThread->dbg_exec_mode = DEBUG_RestartExecution(DEBUG_CurrThread->dbg_exec_mode,
 358                                                              DEBUG_CurrThread->dbg_exec_count);
 359     /*
 360      * This will have gotten absorbed into the breakpoint info
 361      * if it was used.  Otherwise it would have been ignored.
 362      * In any case, we don't mess with it any more.
 363      */
 364     if (DEBUG_CurrThread->dbg_exec_mode == EXEC_CONT || DEBUG_CurrThread->dbg_exec_mode == EXEC_PASS)
 365         DEBUG_CurrThread->dbg_exec_count = 0;
 366
 367     return (DEBUG_CurrThread->dbg_exec_mode == EXEC_PASS) ? DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE;
 368 }
 369
 370 static  BOOL    DEBUG_HandleException(EXCEPTION_RECORD *rec, BOOL first_chance, BOOL force, LPDWORD cont)
 371 {
 372     BOOL        is_debug = FALSE;
 373     BOOL        ret = TRUE;
 374
 375     *cont = DBG_CONTINUE;
 376     if (first_chance && !force && !DBG_IVAR(BreakOnFirstChance)) return TRUE;
 377
 378     switch (rec->ExceptionCode)
 379     {
 380     case EXCEPTION_BREAKPOINT:
 381     case EXCEPTION_SINGLE_STEP:
 382         is_debug = TRUE;
 383         break;
 384     }
 385
 386     if (!is_debug)
 387     {
 388         /* print some infos */
 389         DEBUG_Printf(DBG_CHN_MESG, "%s: ",
 390                       first_chance ? "First chance exception" : "Unhandled exception");
 391         switch (rec->ExceptionCode)
 392         {
 393         case EXCEPTION_INT_DIVIDE_BY_ZERO:
 394             DEBUG_Printf(DBG_CHN_MESG, "divide by zero");
 395             break;
 396         case EXCEPTION_INT_OVERFLOW:
 397             DEBUG_Printf(DBG_CHN_MESG, "overflow");
 398             break;
 399         case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 400             DEBUG_Printf(DBG_CHN_MESG, "array bounds ");
 401             break;
 402         case EXCEPTION_ILLEGAL_INSTRUCTION:
 403             DEBUG_Printf(DBG_CHN_MESG, "illegal instruction");
 404             break;
 405         case EXCEPTION_STACK_OVERFLOW:
 406             DEBUG_Printf(DBG_CHN_MESG, "stack overflow");
 407             break;
 408         case EXCEPTION_PRIV_INSTRUCTION:
 409             DEBUG_Printf(DBG_CHN_MESG, "priviledged instruction");
 410             break;
 411         case EXCEPTION_ACCESS_VIOLATION:
 412             if (rec->NumberParameters == 2)
 413                 DEBUG_Printf(DBG_CHN_MESG, "page fault on %s access to 0x%08lx",
 414                               rec->ExceptionInformation[0] ? "write" : "read",
 415                               rec->ExceptionInformation[1]);
 416             else
 417                 DEBUG_Printf(DBG_CHN_MESG, "page fault");
 418             break;
 419         case EXCEPTION_DATATYPE_MISALIGNMENT:
 420             DEBUG_Printf(DBG_CHN_MESG, "Alignment");
 421             break;
 422         case CONTROL_C_EXIT:
 423             DEBUG_Printf(DBG_CHN_MESG, "^C");
 424             break;
 425         case EXCEPTION_CRITICAL_SECTION_WAIT:
 426             DEBUG_Printf(DBG_CHN_MESG, "critical section %08lx wait failed",
 427                           rec->ExceptionInformation[0]);
 428             if (!DBG_IVAR(BreakOnCritSectTimeOut))
 429                 return TRUE;
 430             break;
 431         default:
 432             DEBUG_Printf(DBG_CHN_MESG, "%08lx", rec->ExceptionCode);
 433             break;
 434         }
 435         DEBUG_Printf(DBG_CHN_MESG, "\n");
 436     }
 437
 438     DEBUG_Printf(DBG_CHN_TRACE,
 439                  "Entering debugger     PC=%lx EFL=%08lx mode=%d count=%d\n",
 440 #ifdef __i386__
 441                  DEBUG_context.Eip, DEBUG_context.EFlags,
 442 #else
 443                  0L, 0L,
 444 #endif
 445                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 446
 447     if (DEBUG_ExceptionProlog(is_debug, force, rec->ExceptionCode)) {
 448         while ((ret = DEBUG_Parser())) {
 449             if (DEBUG_ValidateRegisters()) {
 450                 if (DEBUG_CurrThread->dbg_exec_mode != EXEC_PASS || first_chance)
 451                     break;
 452                 DEBUG_Printf(DBG_CHN_MESG, "Cannot pass on last chance exception. You must use cont\n");
 453             }
 454         }
 455     }
 456     *cont = DEBUG_ExceptionEpilog();
 457
 458     DEBUG_Printf(DBG_CHN_TRACE,
 459                  "Exiting debugger      PC=%lx EFL=%08lx mode=%d count=%d\n",
 460 #ifdef __i386__
 461                  DEBUG_context.Eip, DEBUG_context.EFlags,
 462 #else
 463                  0L, 0L,
 464 #endif
 465                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 466
 467     return ret;
 468 }
 469
 470 static  BOOL    DEBUG_HandleDebugEvent(DEBUG_EVENT* de, LPDWORD cont)
 471 {
 472     char                buffer[256];
 473     BOOL                ret;
 474
 475     DEBUG_CurrPid = de->dwProcessId;
 476     DEBUG_CurrTid = de->dwThreadId;
 477
 478     __TRY {
 479         ret = TRUE;
 480         *cont = 0L;
 481
 482         if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL)
 483             DEBUG_CurrThread = DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId);
 484         else
 485             DEBUG_CurrThread = NULL;
 486
 487         switch (de->dwDebugEventCode) {
 488         case EXCEPTION_DEBUG_EVENT:
 489             if (!DEBUG_CurrThread) {
 490                 DEBUG_Printf(DBG_CHN_ERR, "%08lx:%08lx: not a registered process or thread (perhaps a 16 bit one ?)\n",
 491                              de->dwProcessId, de->dwThreadId);
 492                 break;
 493             }
 494
 495             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exception code=%08lx\n",
 496                          de->dwProcessId, de->dwThreadId,
 497                          de->u.Exception.ExceptionRecord.ExceptionCode);
 498
 499             if (DEBUG_CurrProcess->continue_on_first_exception) {
 500                 DEBUG_CurrProcess->continue_on_first_exception = FALSE;
 501                 if (!DBG_IVAR(BreakOnAttach)) {
 502                     *cont = DBG_CONTINUE;
 503                     break;
 504                 }
 505             }
 506
 507             DEBUG_context.ContextFlags =  CONTEXT_CONTROL
 508                                         | CONTEXT_INTEGER
 509 #ifdef CONTEXT_SEGMENTS
 510                                         | CONTEXT_SEGMENTS
 511 #endif
 512 #ifdef CONTEXT_DEBUG_REGISTERS
 513                                         | CONTEXT_DEBUG_REGISTERS
 514 #endif
 515                                         ;
 516
 517             if (!GetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context)) {
 518                 DEBUG_Printf(DBG_CHN_WARN, "Can't get thread's context\n");
 519                 break;
 520             }
 521
 522             ret = DEBUG_HandleException(&de->u.Exception.ExceptionRecord,
 523                                         de->u.Exception.dwFirstChance,
 524                                         DEBUG_CurrThread->wait_for_first_exception,
 525                                         cont);
 526             if (DEBUG_CurrThread) {
 527                 DEBUG_CurrThread->wait_for_first_exception = 0;
 528                 SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
 529             }
 530             break;
 531
 532         case CREATE_THREAD_DEBUG_EVENT:
 533             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread D @%08lx\n", de->dwProcessId, de->dwThreadId,
 534                          (unsigned long)(LPVOID)de->u.CreateThread.lpStartAddress);
 535
 536             if (DEBUG_CurrProcess == NULL) {
 537                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 538                 break;
 539             }
 540             if (DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId) != NULL) {
 541                 DEBUG_Printf(DBG_CHN_TRACE, "Thread already listed, skipping\n");
 542                 break;
 543             }
 544
 545             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 546                                                de->dwThreadId,
 547                                                de->u.CreateThread.hThread,
 548                                                de->u.CreateThread.lpStartAddress,
 549                                                de->u.CreateThread.lpThreadLocalBase);
 550             if (!DEBUG_CurrThread) {
 551                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 552                 break;
 553             }
 554             DEBUG_InitCurrThread();
 555             break;
 556
 557         case CREATE_PROCESS_DEBUG_EVENT:
 558             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 559                                            de->u.CreateProcessInfo.hProcess,
 560                                            de->u.CreateProcessInfo.lpImageName);
 561
 562             /* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
 563             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create process %s @%08lx (%ld<%ld>)\n",
 564                          de->dwProcessId, de->dwThreadId,
 565                          buffer,
 566                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress,
 567                          de->u.CreateProcessInfo.dwDebugInfoFileOffset,
 568                          de->u.CreateProcessInfo.nDebugInfoSize);
 569
 570             if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL) {
 571                 if (DEBUG_CurrProcess->handle) {
 572                     DEBUG_Printf(DBG_CHN_ERR, "Skipping already defined process\n");
 573                     break;
 574                 }
 575                 DEBUG_CurrProcess->handle = de->u.CreateProcessInfo.hProcess;
 576             } else {
 577                 DEBUG_CurrProcess = DEBUG_AddProcess(de->dwProcessId,
 578                                                      de->u.CreateProcessInfo.hProcess);
 579                 if (DEBUG_CurrProcess == NULL) {
 580                     DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 581                     break;
 582                 }
 583             }
 584
 585             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread I @%08lx\n",
 586                          de->dwProcessId, de->dwThreadId,
 587                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress);
 588
 589             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 590                                                de->dwThreadId,
 591                                                de->u.CreateProcessInfo.hThread,
 592                                                de->u.CreateProcessInfo.lpStartAddress,
 593                                                de->u.CreateProcessInfo.lpThreadLocalBase);
 594             if (!DEBUG_CurrThread) {
 595                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 596                 break;
 597             }
 598
 599             DEBUG_InitCurrProcess();
 600             DEBUG_InitCurrThread();
 601
 602             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 603                                            DEBUG_CurrThread->process->handle,
 604                                            de->u.CreateProcessInfo.lpImageName);
 605             DEBUG_LoadModule32(buffer[0] ? buffer : "<Debugged process>",
 606                                de->u.CreateProcessInfo.hFile,
 607                                (DWORD)de->u.CreateProcessInfo.lpBaseOfImage);
 608
 609             if (buffer[0])  /* we got a process name */
 610             {
 611                 DWORD type;
 612                 if (!GetBinaryTypeA( buffer, &type ))
 613                 {
 614                     /* not a Windows binary, assume it's a Unix executable then */
 615                     DOS_FULL_NAME fullname;
 616                     /* HACK!! should fix DEBUG_ReadExecutableDbgInfo to accept DOS filenames */
 617                     if (DOSFS_GetFullName( buffer, TRUE, &fullname ))
 618                     {
 619                         DEBUG_ReadExecutableDbgInfo( fullname.long_name );
 620                         break;
 621                     }
 622                 }
 623             }
 624             /* if it is a Windows binary, or an invalid or missing file name,
 625              * we use wine itself as the main executable */
 626             DEBUG_ReadExecutableDbgInfo( "wine" );
 627             break;
 628
 629         case EXIT_THREAD_DEBUG_EVENT:
 630             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit thread (%ld)\n",
 631                          de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
 632
 633             if (DEBUG_CurrThread == NULL) {
 634                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 635                 break;
 636             }
 637             /* FIXME: remove break point set on thread startup */
 638             DEBUG_DelThread(DEBUG_CurrThread);
 639             break;
 640
 641         case EXIT_PROCESS_DEBUG_EVENT:
 642             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit process (%ld)\n",
 643                          de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
 644
 645             if (DEBUG_CurrProcess == NULL) {
 646                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 647                 break;
 648             }
 649             /* just in case */
 650             DEBUG_SetBreakpoints(FALSE);
 651             /* kill last thread */
 652             DEBUG_DelThread(DEBUG_CurrProcess->threads);
 653             DEBUG_DelProcess(DEBUG_CurrProcess);
 654
 655             DEBUG_Printf(DBG_CHN_MESG, "Process of pid=%08lx has terminated\n", DEBUG_CurrPid);
 656             break;
 657
 658         case LOAD_DLL_DEBUG_EVENT:
 659             if (DEBUG_CurrThread == NULL) {
 660                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 661                 break;
 662             }
 663             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 664                                            DEBUG_CurrThread->process->handle,
 665                                            de->u.LoadDll.lpImageName);
 666
 667             /* FIXME unicode: de->u.LoadDll.fUnicode */
 668             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
 669                          de->dwProcessId, de->dwThreadId,
 670                          buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
 671                          de->u.LoadDll.dwDebugInfoFileOffset,
 672                          de->u.LoadDll.nDebugInfoSize);
 673             CharUpper(buffer);
 674             DEBUG_LoadModule32(buffer, de->u.LoadDll.hFile, (DWORD)de->u.LoadDll.lpBaseOfDll);
 675             if (DBG_IVAR(BreakOnDllLoad)) {
 676                 DEBUG_Printf(DBG_CHN_MESG, "Stopping on DLL %s loading at %08lx\n",
 677                              buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll);
 678                 ret = DEBUG_Parser();
 679             }
 680             break;
 681
 682         case UNLOAD_DLL_DEBUG_EVENT:
 683             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unload DLL @%08lx\n", de->dwProcessId, de->dwThreadId,
 684                          (unsigned long)de->u.UnloadDll.lpBaseOfDll);
 685             break;
 686
 687         case OUTPUT_DEBUG_STRING_EVENT:
 688             if (DEBUG_CurrThread == NULL) {
 689                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 690                 break;
 691             }
 692
 693             DEBUG_ProcessGetString(buffer, sizeof(buffer),
 694                                    DEBUG_CurrThread->process->handle,
 695                                    de->u.DebugString.lpDebugStringData);
 696
 697             /* fixme unicode de->u.DebugString.fUnicode ? */
 698             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: output debug string (%s)\n",
 699                          de->dwProcessId, de->dwThreadId, buffer);
 700             break;
 701
 702         case RIP_EVENT:
 703             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: rip error=%ld type=%ld\n",
 704                          de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
 705                          de->u.RipInfo.dwType);
 706             break;
 707
 708         default:
 709             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unknown event (%ld)\n",
 710                          de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
 711         }
 712
 713     } __EXCEPT(wine_dbg) {
 714         *cont = 0;
 715         ret = TRUE;
 716     }
 717     __ENDTRY;
 718     return ret;
 719 }
 720
 721 static  DWORD   DEBUG_MainLoop(void)
 722 {
 723     DEBUG_EVENT         de;
 724     DWORD               cont;
 725     BOOL                ret;
 726
 727     DEBUG_Printf(DBG_CHN_MESG, " on pid %ld\n", DEBUG_CurrPid);
 728
 729     for (ret = TRUE; ret; ) {
 730         /* wait until we get at least one loaded process */
 731         while (!DEBUG_ProcessList && (ret = DEBUG_Parser()));
 732         if (!ret) break;
 733
 734         while (ret && DEBUG_ProcessList && WaitForDebugEvent(&de, INFINITE)) {
 735             ret = DEBUG_HandleDebugEvent(&de, &cont);
 736             ContinueDebugEvent(de.dwProcessId, de.dwThreadId, cont);
 737         }
 738     };
 739
 740     DEBUG_Printf(DBG_CHN_MESG, "WineDbg terminated on pid %ld\n", DEBUG_CurrPid);
 741
 742     return 0;
 743 }
 744
 745 static  BOOL    DEBUG_Start(LPSTR cmdLine)
 746 {
 747     PROCESS_INFORMATION info;
 748     STARTUPINFOA        startup;
 749
 750     memset(&startup, 0, sizeof(startup));
 751     startup.cb = sizeof(startup);
 752     startup.dwFlags = STARTF_USESHOWWINDOW;
 753     startup.wShowWindow = SW_SHOWNORMAL;
 754
 755     if (!CreateProcess(NULL, cmdLine, NULL, NULL,
 756                        FALSE, DEBUG_PROCESS, NULL, NULL, &startup, &info)) {
 757         DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 758         return FALSE;
 759     }
 760     DEBUG_CurrPid = info.dwProcessId;
 761     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(DEBUG_CurrPid, 0))) return FALSE;
 762
 763     return TRUE;
 764 }
 765
 766 void    DEBUG_Run(const char* args)
 767 {
 768     DBG_MODULE* wmod = DEBUG_GetProcessMainModule(DEBUG_CurrProcess);
 769     const char* pgm = (wmod) ? wmod->module_name : "none";
 770
 771     if (args) {
 772         DEBUG_Printf(DBG_CHN_MESG, "Run (%s) with '%s'\n", pgm, args);
 773     } else {
 774         if (!DEBUG_LastCmdLine) {
 775             DEBUG_Printf(DBG_CHN_MESG, "Cannot find previously used command line.\n");
 776             return;
 777         }
 778         DEBUG_Start(DEBUG_LastCmdLine);
 779     }
 780 }
 781
 782 int DEBUG_main(int argc, char** argv)
 783 {
 784     DWORD       retv = 0;
 785
 786 #ifdef DBG_need_heap
 787     /* Initialize the debugger heap. */
 788     dbg_heap = HeapCreate(HEAP_NO_SERIALIZE, 0x1000, 0x8000000); /* 128MB */
 789 #endif
 790
 791     /* Initialize the type handling stuff. */
 792     DEBUG_InitTypes();
 793     DEBUG_InitCVDataTypes();
 794
 795     /* Initialize internal vars (types must be initialized before) */
 796     if (!DEBUG_IntVarsRW(TRUE)) return -1;
 797
 798     /* keep it as a guiexe for now, so that Wine won't touch the Unix stdin,
 799      * stdout and stderr streams
 800      */
 801     if (DBG_IVAR(UseXTerm)) {
 802         COORD           pos;
 803
 804         /* This is a hack: it forces creation of an xterm, not done by default */
 805         pos.X = 0; pos.Y = 1;
 806         SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
 807     }
 808
 809     DEBUG_Printf(DBG_CHN_MESG, "Starting WineDbg... ");
 810
 811     if (argc == 3) {
 812         HANDLE  hEvent;
 813         DWORD   pid;
 814
 815         if ((pid = atoi(argv[1])) != 0 && (hEvent = atoi(argv[2])) != 0) {
 816             BOOL        ret = DEBUG_Attach(pid, TRUE);
 817
 818             SetEvent(hEvent);
 819             if (!ret) {
 820                 DEBUG_Printf(DBG_CHN_ERR, "Can't attach process %ld: %ld\n",
 821                              DEBUG_CurrPid, GetLastError());
 822                 goto leave;
 823             }
 824             DEBUG_CurrPid = pid;
 825         }
 826     }
 827
 828     if (DEBUG_CurrPid == 0 && argc > 1) {
 829         int     i, len;
 830         LPSTR   cmdLine;
 831
 832         if (!(cmdLine = DBG_alloc(len = 1))) goto oom_leave;
 833         cmdLine[0] = '\0';
 834
 835         for (i = 1; i < argc; i++) {
 836             len += strlen(argv[i]) + 1;
 837             if (!(cmdLine = DBG_realloc(cmdLine, len))) goto oom_leave;
 838             strcat(cmdLine, argv[i]);
 839             cmdLine[len - 2] = ' ';
 840             cmdLine[len - 1] = '\0';
 841         }
 842
 843         if (!DEBUG_Start(cmdLine)) {
 844             DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 845             goto leave;
 846         }
 847         DBG_free(DEBUG_LastCmdLine);
 848         DEBUG_LastCmdLine = cmdLine;
 849     }
 850
 851     retv = DEBUG_MainLoop();
 852  leave:
 853     /* saves modified variables */
 854     DEBUG_IntVarsRW(FALSE);
 855
 856     return retv;
 857
 858  oom_leave:
 859     DEBUG_Printf(DBG_CHN_MESG, "Out of memory\n");
 860     goto leave;
 861 }