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         if (!addr.seg)
 286             DEBUG_Printf(DBG_CHN_MESG, " in 32-bit code (0x%08lx).\n", addr.off);
 287         else
 288             switch(DEBUG_GetSelectorType(addr.seg))
 289             {
 290             case MODE_32:
 291                 DEBUG_Printf(DBG_CHN_MESG, " in 32-bit code (%04lx:%08lx).\n", addr.seg, addr.off);
 292                 break;
 293             case MODE_16:
 294                 DEBUG_Printf(DBG_CHN_MESG, " in 16-bit code (%04lx:%04lx).\n", addr.seg, addr.off);
 295                 break;
 296             case MODE_VM86:
 297                 DEBUG_Printf(DBG_CHN_MESG, " in vm86 code (%04lx:%04lx).\n", addr.seg, addr.off);
 298                 break;
 299             case MODE_INVALID:
 300                 DEBUG_Printf(DBG_CHN_MESG, "bad CS (%lx)\n", addr.seg);
 301                 break;
 302         }
 303     }
 304
 305     DEBUG_LoadEntryPoints("Loading new modules symbols:\n");
 306
 307     if (!force && is_debug &&
 308         DEBUG_ShouldContinue(&addr,
 309                              code,
 310                              DEBUG_CurrThread->dbg_exec_mode,
 311                              &DEBUG_CurrThread->dbg_exec_count))
 312         return FALSE;
 313
 314     if ((newmode = DEBUG_GetSelectorType(addr.seg)) == MODE_INVALID) newmode = MODE_32;
 315     if (newmode != DEBUG_CurrThread->dbg_mode)
 316     {
 317         static const char * const names[] = { "???", "16-bit", "32-bit", "vm86" };
 318         DEBUG_Printf(DBG_CHN_MESG,"In %s mode.\n", names[newmode] );
 319         DEBUG_CurrThread->dbg_mode = newmode;
 320     }
 321
 322     DEBUG_DoDisplay();
 323
 324     if (is_debug || force) {
 325         /*
 326          * Do a quiet backtrace so that we have an idea of what the situation
 327          * is WRT the source files.
 328          */
 329         DEBUG_BackTrace(FALSE);
 330     } else {
 331         /* This is a real crash, dump some info */
 332         DEBUG_InfoRegisters();
 333         DEBUG_InfoStack();
 334 #ifdef __i386__
 335         if (DEBUG_CurrThread->dbg_mode == MODE_16) {
 336             DEBUG_InfoSegments(DEBUG_context.SegDs >> 3, 1);
 337             if (DEBUG_context.SegEs != DEBUG_context.SegDs)
 338                 DEBUG_InfoSegments(DEBUG_context.SegEs >> 3, 1);
 339         }
 340         DEBUG_InfoSegments(DEBUG_context.SegFs >> 3, 1);
 341 #endif
 342         DEBUG_BackTrace(TRUE);
 343     }
 344
 345     if (!is_debug ||
 346         (DEBUG_CurrThread->dbg_exec_mode == EXEC_STEPI_OVER) ||
 347         (DEBUG_CurrThread->dbg_exec_mode == EXEC_STEPI_INSTR)) {
 348
 349         struct list_id list;
 350
 351         /* Show where we crashed */
 352         curr_frame = 0;
 353         DEBUG_DisassembleInstruction(&addr);
 354
 355         /* resets list internal arguments so we can look at source code when needed */
 356         DEBUG_FindNearestSymbol(&addr, TRUE, NULL, 0, &list);
 357         if (list.sourcefile) DEBUG_List(&list, NULL, 0);
 358     }
 359     return TRUE;
 360 }
 361
 362 static  DWORD   DEBUG_ExceptionEpilog(void)
 363 {
 364     DEBUG_CurrThread->dbg_exec_mode = DEBUG_RestartExecution(DEBUG_CurrThread->dbg_exec_mode,
 365                                                              DEBUG_CurrThread->dbg_exec_count);
 366     /*
 367      * This will have gotten absorbed into the breakpoint info
 368      * if it was used.  Otherwise it would have been ignored.
 369      * In any case, we don't mess with it any more.
 370      */
 371     if (DEBUG_CurrThread->dbg_exec_mode == EXEC_CONT || DEBUG_CurrThread->dbg_exec_mode == EXEC_PASS)
 372         DEBUG_CurrThread->dbg_exec_count = 0;
 373
 374     return (DEBUG_CurrThread->dbg_exec_mode == EXEC_PASS) ? DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE;
 375 }
 376
 377 static  BOOL    DEBUG_HandleException(EXCEPTION_RECORD *rec, BOOL first_chance, BOOL force, LPDWORD cont)
 378 {
 379     BOOL        is_debug = FALSE;
 380     BOOL        ret = TRUE;
 381
 382     *cont = DBG_CONTINUE;
 383
 384     switch (rec->ExceptionCode)
 385     {
 386     case EXCEPTION_BREAKPOINT:
 387     case EXCEPTION_SINGLE_STEP:
 388         is_debug = TRUE;
 389         break;
 390     }
 391
 392     if (first_chance && !force && !DBG_IVAR(BreakOnFirstChance))
 393     {
 394         /* pass exception to program except for debug exceptions */
 395         *cont = is_debug ? DBG_CONTINUE : DBG_EXCEPTION_NOT_HANDLED;
 396         return TRUE;
 397     }
 398
 399     if (!is_debug)
 400     {
 401         /* print some infos */
 402         DEBUG_Printf(DBG_CHN_MESG, "%s: ",
 403                       first_chance ? "First chance exception" : "Unhandled exception");
 404         switch (rec->ExceptionCode)
 405         {
 406         case EXCEPTION_INT_DIVIDE_BY_ZERO:
 407             DEBUG_Printf(DBG_CHN_MESG, "divide by zero");
 408             break;
 409         case EXCEPTION_INT_OVERFLOW:
 410             DEBUG_Printf(DBG_CHN_MESG, "overflow");
 411             break;
 412         case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 413             DEBUG_Printf(DBG_CHN_MESG, "array bounds ");
 414             break;
 415         case EXCEPTION_ILLEGAL_INSTRUCTION:
 416             DEBUG_Printf(DBG_CHN_MESG, "illegal instruction");
 417             break;
 418         case EXCEPTION_STACK_OVERFLOW:
 419             DEBUG_Printf(DBG_CHN_MESG, "stack overflow");
 420             break;
 421         case EXCEPTION_PRIV_INSTRUCTION:
 422             DEBUG_Printf(DBG_CHN_MESG, "priviledged instruction");
 423             break;
 424         case EXCEPTION_ACCESS_VIOLATION:
 425             if (rec->NumberParameters == 2)
 426                 DEBUG_Printf(DBG_CHN_MESG, "page fault on %s access to 0x%08lx",
 427                               rec->ExceptionInformation[0] ? "write" : "read",
 428                               rec->ExceptionInformation[1]);
 429             else
 430                 DEBUG_Printf(DBG_CHN_MESG, "page fault");
 431             break;
 432         case EXCEPTION_DATATYPE_MISALIGNMENT:
 433             DEBUG_Printf(DBG_CHN_MESG, "Alignment");
 434             break;
 435         case CONTROL_C_EXIT:
 436             DEBUG_Printf(DBG_CHN_MESG, "^C");
 437             break;
 438         case EXCEPTION_CRITICAL_SECTION_WAIT:
 439             DEBUG_Printf(DBG_CHN_MESG, "critical section %08lx wait failed",
 440                           rec->ExceptionInformation[0]);
 441             if (!DBG_IVAR(BreakOnCritSectTimeOut))
 442             {
 443                 DEBUG_Printf(DBG_CHN_MESG, "\n");
 444                 return TRUE;
 445             }
 446             break;
 447         case EXCEPTION_VM86_INTx:
 448             DEBUG_Printf(DBG_CHN_MESG, "interrupt %02lx in vm86 mode",
 449                          rec->ExceptionInformation[0]);
 450             break;
 451         case EXCEPTION_VM86_STI:
 452             DEBUG_Printf(DBG_CHN_MESG, "sti in vm86 mode");
 453             break;
 454         case EXCEPTION_VM86_PICRETURN:
 455             DEBUG_Printf(DBG_CHN_MESG, "PIC return in vm86 mode");
 456             break;
 457         default:
 458             DEBUG_Printf(DBG_CHN_MESG, "%08lx", rec->ExceptionCode);
 459             break;
 460         }
 461         DEBUG_Printf(DBG_CHN_MESG, "\n");
 462     }
 463
 464     DEBUG_Printf(DBG_CHN_TRACE,
 465                  "Entering debugger     PC=%lx EFL=%08lx mode=%d count=%d\n",
 466 #ifdef __i386__
 467                  DEBUG_context.Eip, DEBUG_context.EFlags,
 468 #else
 469                  0L, 0L,
 470 #endif
 471                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 472
 473     if (DEBUG_ExceptionProlog(is_debug, force, rec->ExceptionCode)) {
 474         while ((ret = DEBUG_Parser())) {
 475             if (DEBUG_ValidateRegisters()) {
 476                 if (DEBUG_CurrThread->dbg_exec_mode != EXEC_PASS || first_chance)
 477                     break;
 478                 DEBUG_Printf(DBG_CHN_MESG, "Cannot pass on last chance exception. You must use cont\n");
 479             }
 480         }
 481     }
 482     *cont = DEBUG_ExceptionEpilog();
 483
 484     DEBUG_Printf(DBG_CHN_TRACE,
 485                  "Exiting debugger      PC=%lx EFL=%08lx mode=%d count=%d\n",
 486 #ifdef __i386__
 487                  DEBUG_context.Eip, DEBUG_context.EFlags,
 488 #else
 489                  0L, 0L,
 490 #endif
 491                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 492
 493     return ret;
 494 }
 495
 496 static  BOOL    DEBUG_HandleDebugEvent(DEBUG_EVENT* de, LPDWORD cont)
 497 {
 498     char                buffer[256];
 499     BOOL                ret;
 500
 501     DEBUG_CurrPid = de->dwProcessId;
 502     DEBUG_CurrTid = de->dwThreadId;
 503
 504     __TRY {
 505         ret = TRUE;
 506         *cont = 0L;
 507
 508         if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL)
 509             DEBUG_CurrThread = DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId);
 510         else
 511             DEBUG_CurrThread = NULL;
 512
 513         switch (de->dwDebugEventCode) {
 514         case EXCEPTION_DEBUG_EVENT:
 515             if (!DEBUG_CurrThread) {
 516                 DEBUG_Printf(DBG_CHN_ERR, "%08lx:%08lx: not a registered process or thread (perhaps a 16 bit one ?)\n",
 517                              de->dwProcessId, de->dwThreadId);
 518                 break;
 519             }
 520
 521             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exception code=%08lx\n",
 522                          de->dwProcessId, de->dwThreadId,
 523                          de->u.Exception.ExceptionRecord.ExceptionCode);
 524
 525             if (DEBUG_CurrProcess->continue_on_first_exception) {
 526                 DEBUG_CurrProcess->continue_on_first_exception = FALSE;
 527                 if (!DBG_IVAR(BreakOnAttach)) {
 528                     *cont = DBG_CONTINUE;
 529                     break;
 530                 }
 531             }
 532
 533             DEBUG_context.ContextFlags =  CONTEXT_CONTROL
 534                                         | CONTEXT_INTEGER
 535 #ifdef CONTEXT_SEGMENTS
 536                                         | CONTEXT_SEGMENTS
 537 #endif
 538 #ifdef CONTEXT_DEBUG_REGISTERS
 539                                         | CONTEXT_DEBUG_REGISTERS
 540 #endif
 541                                         ;
 542
 543             if (!GetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context)) {
 544                 DEBUG_Printf(DBG_CHN_WARN, "Can't get thread's context\n");
 545                 break;
 546             }
 547
 548             ret = DEBUG_HandleException(&de->u.Exception.ExceptionRecord,
 549                                         de->u.Exception.dwFirstChance,
 550                                         DEBUG_CurrThread->wait_for_first_exception,
 551                                         cont);
 552             if (DEBUG_CurrThread) {
 553                 DEBUG_CurrThread->wait_for_first_exception = 0;
 554                 SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
 555             }
 556             break;
 557
 558         case CREATE_THREAD_DEBUG_EVENT:
 559             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread D @%08lx\n", de->dwProcessId, de->dwThreadId,
 560                          (unsigned long)(LPVOID)de->u.CreateThread.lpStartAddress);
 561
 562             if (DEBUG_CurrProcess == NULL) {
 563                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 564                 break;
 565             }
 566             if (DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId) != NULL) {
 567                 DEBUG_Printf(DBG_CHN_TRACE, "Thread already listed, skipping\n");
 568                 break;
 569             }
 570
 571             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 572                                                de->dwThreadId,
 573                                                de->u.CreateThread.hThread,
 574                                                de->u.CreateThread.lpStartAddress,
 575                                                de->u.CreateThread.lpThreadLocalBase);
 576             if (!DEBUG_CurrThread) {
 577                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 578                 break;
 579             }
 580             DEBUG_InitCurrThread();
 581             break;
 582
 583         case CREATE_PROCESS_DEBUG_EVENT:
 584             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 585                                            de->u.CreateProcessInfo.hProcess,
 586                                            de->u.CreateProcessInfo.lpImageName);
 587
 588             /* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
 589             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create process %s @%08lx (%ld<%ld>)\n",
 590                          de->dwProcessId, de->dwThreadId,
 591                          buffer,
 592                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress,
 593                          de->u.CreateProcessInfo.dwDebugInfoFileOffset,
 594                          de->u.CreateProcessInfo.nDebugInfoSize);
 595
 596             if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL) {
 597                 if (DEBUG_CurrProcess->handle) {
 598                     DEBUG_Printf(DBG_CHN_ERR, "Skipping already defined process\n");
 599                     break;
 600                 }
 601                 DEBUG_CurrProcess->handle = de->u.CreateProcessInfo.hProcess;
 602             } else {
 603                 DEBUG_CurrProcess = DEBUG_AddProcess(de->dwProcessId,
 604                                                      de->u.CreateProcessInfo.hProcess);
 605                 if (DEBUG_CurrProcess == NULL) {
 606                     DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 607                     break;
 608                 }
 609             }
 610
 611             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread I @%08lx\n",
 612                          de->dwProcessId, de->dwThreadId,
 613                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress);
 614
 615             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 616                                                de->dwThreadId,
 617                                                de->u.CreateProcessInfo.hThread,
 618                                                de->u.CreateProcessInfo.lpStartAddress,
 619                                                de->u.CreateProcessInfo.lpThreadLocalBase);
 620             if (!DEBUG_CurrThread) {
 621                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 622                 break;
 623             }
 624
 625             DEBUG_InitCurrProcess();
 626             DEBUG_InitCurrThread();
 627
 628             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 629                                            DEBUG_CurrThread->process->handle,
 630                                            de->u.CreateProcessInfo.lpImageName);
 631             DEBUG_LoadModule32(buffer[0] ? buffer : "<Debugged process>",
 632                                de->u.CreateProcessInfo.hFile,
 633                                (DWORD)de->u.CreateProcessInfo.lpBaseOfImage);
 634
 635             if (buffer[0])  /* we got a process name */
 636             {
 637                 DWORD type;
 638                 if (!GetBinaryTypeA( buffer, &type ))
 639                 {
 640                     /* not a Windows binary, assume it's a Unix executable then */
 641                     DOS_FULL_NAME fullname;
 642                     /* HACK!! should fix DEBUG_ReadExecutableDbgInfo to accept DOS filenames */
 643                     if (DOSFS_GetFullName( buffer, TRUE, &fullname ))
 644                     {
 645                         DEBUG_ReadExecutableDbgInfo( fullname.long_name );
 646                         break;
 647                     }
 648                 }
 649             }
 650             /* if it is a Windows binary, or an invalid or missing file name,
 651              * we use wine itself as the main executable */
 652             DEBUG_ReadExecutableDbgInfo( "wine" );
 653             break;
 654
 655         case EXIT_THREAD_DEBUG_EVENT:
 656             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit thread (%ld)\n",
 657                          de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
 658
 659             if (DEBUG_CurrThread == NULL) {
 660                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 661                 break;
 662             }
 663             /* FIXME: remove break point set on thread startup */
 664             DEBUG_DelThread(DEBUG_CurrThread);
 665             break;
 666
 667         case EXIT_PROCESS_DEBUG_EVENT:
 668             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit process (%ld)\n",
 669                          de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
 670
 671             if (DEBUG_CurrProcess == NULL) {
 672                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 673                 break;
 674             }
 675             /* just in case */
 676             DEBUG_SetBreakpoints(FALSE);
 677             /* kill last thread */
 678             DEBUG_DelThread(DEBUG_CurrProcess->threads);
 679             DEBUG_DelProcess(DEBUG_CurrProcess);
 680
 681             DEBUG_Printf(DBG_CHN_MESG, "Process of pid=%08lx has terminated\n", DEBUG_CurrPid);
 682             break;
 683
 684         case LOAD_DLL_DEBUG_EVENT:
 685             if (DEBUG_CurrThread == NULL) {
 686                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 687                 break;
 688             }
 689             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 690                                            DEBUG_CurrThread->process->handle,
 691                                            de->u.LoadDll.lpImageName);
 692
 693             /* FIXME unicode: de->u.LoadDll.fUnicode */
 694             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
 695                          de->dwProcessId, de->dwThreadId,
 696                          buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
 697                          de->u.LoadDll.dwDebugInfoFileOffset,
 698                          de->u.LoadDll.nDebugInfoSize);
 699             CharUpper(buffer);
 700             DEBUG_LoadModule32(buffer, de->u.LoadDll.hFile, (DWORD)de->u.LoadDll.lpBaseOfDll);
 701             if (DBG_IVAR(BreakOnDllLoad)) {
 702                 DEBUG_Printf(DBG_CHN_MESG, "Stopping on DLL %s loading at %08lx\n",
 703                              buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll);
 704                 ret = DEBUG_Parser();
 705             }
 706             break;
 707
 708         case UNLOAD_DLL_DEBUG_EVENT:
 709             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unload DLL @%08lx\n", de->dwProcessId, de->dwThreadId,
 710                          (unsigned long)de->u.UnloadDll.lpBaseOfDll);
 711             break;
 712
 713         case OUTPUT_DEBUG_STRING_EVENT:
 714             if (DEBUG_CurrThread == NULL) {
 715                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 716                 break;
 717             }
 718
 719             DEBUG_ProcessGetString(buffer, sizeof(buffer),
 720                                    DEBUG_CurrThread->process->handle,
 721                                    de->u.DebugString.lpDebugStringData);
 722
 723             /* fixme unicode de->u.DebugString.fUnicode ? */
 724             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: output debug string (%s)\n",
 725                          de->dwProcessId, de->dwThreadId, buffer);
 726             break;
 727
 728         case RIP_EVENT:
 729             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: rip error=%ld type=%ld\n",
 730                          de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
 731                          de->u.RipInfo.dwType);
 732             break;
 733
 734         default:
 735             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unknown event (%ld)\n",
 736                          de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
 737         }
 738
 739     } __EXCEPT(wine_dbg) {
 740         *cont = 0;
 741         ret = TRUE;
 742     }
 743     __ENDTRY;
 744     return ret;
 745 }
 746
 747 static  DWORD   DEBUG_MainLoop(void)
 748 {
 749     DEBUG_EVENT         de;
 750     DWORD               cont;
 751     BOOL                ret;
 752
 753     DEBUG_Printf(DBG_CHN_MESG, " on pid %lx\n", DEBUG_CurrPid);
 754
 755     for (ret = TRUE; ret; ) {
 756         /* wait until we get at least one loaded process */
 757         while (!DEBUG_ProcessList && (ret = DEBUG_Parser()));
 758         if (!ret) break;
 759
 760         while (ret && DEBUG_ProcessList && WaitForDebugEvent(&de, INFINITE)) {
 761             ret = DEBUG_HandleDebugEvent(&de, &cont);
 762             ContinueDebugEvent(de.dwProcessId, de.dwThreadId, cont);
 763         }
 764     };
 765
 766     DEBUG_Printf(DBG_CHN_MESG, "WineDbg terminated on pid %lx\n", DEBUG_CurrPid);
 767
 768     return 0;
 769 }
 770
 771 static  BOOL    DEBUG_Start(LPSTR cmdLine)
 772 {
 773     PROCESS_INFORMATION info;
 774     STARTUPINFOA        startup;
 775
 776     memset(&startup, 0, sizeof(startup));
 777     startup.cb = sizeof(startup);
 778     startup.dwFlags = STARTF_USESHOWWINDOW;
 779     startup.wShowWindow = SW_SHOWNORMAL;
 780
 781     if (!CreateProcess(NULL, cmdLine, NULL, NULL,
 782                        FALSE, DEBUG_PROCESS, NULL, NULL, &startup, &info)) {
 783         DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 784         return FALSE;
 785     }
 786     DEBUG_CurrPid = info.dwProcessId;
 787     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(DEBUG_CurrPid, 0))) return FALSE;
 788
 789     return TRUE;
 790 }
 791
 792 void    DEBUG_Run(const char* args)
 793 {
 794     DBG_MODULE* wmod = DEBUG_GetProcessMainModule(DEBUG_CurrProcess);
 795     const char* pgm = (wmod) ? wmod->module_name : "none";
 796
 797     if (args) {
 798         DEBUG_Printf(DBG_CHN_MESG, "Run (%s) with '%s'\n", pgm, args);
 799     } else {
 800         if (!DEBUG_LastCmdLine) {
 801             DEBUG_Printf(DBG_CHN_MESG, "Cannot find previously used command line.\n");
 802             return;
 803         }
 804         DEBUG_Start(DEBUG_LastCmdLine);
 805     }
 806 }
 807
 808 int DEBUG_main(int argc, char** argv)
 809 {
 810     DWORD       retv = 0;
 811
 812 #ifdef DBG_need_heap
 813     /* Initialize the debugger heap. */
 814     dbg_heap = HeapCreate(HEAP_NO_SERIALIZE, 0x1000, 0x8000000); /* 128MB */
 815 #endif
 816
 817     /* Initialize the type handling stuff. */
 818     DEBUG_InitTypes();
 819     DEBUG_InitCVDataTypes();
 820
 821     /* Initialize internal vars (types must be initialized before) */
 822     if (!DEBUG_IntVarsRW(TRUE)) return -1;
 823
 824     /* keep it as a guiexe for now, so that Wine won't touch the Unix stdin,
 825      * stdout and stderr streams
 826      */
 827     if (DBG_IVAR(UseXTerm)) {
 828         COORD           pos;
 829
 830         /* This is a hack: it forces creation of an xterm, not done by default */
 831         pos.X = 0; pos.Y = 1;
 832         SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
 833     }
 834
 835     DEBUG_Printf(DBG_CHN_MESG, "Starting WineDbg... ");
 836
 837     if (argc == 3) {
 838         HANDLE  hEvent;
 839         DWORD   pid;
 840
 841         if ((pid = atoi(argv[1])) != 0 && (hEvent = atoi(argv[2])) != 0) {
 842             BOOL        ret = DEBUG_Attach(pid, TRUE);
 843
 844             SetEvent(hEvent);
 845             CloseHandle(hEvent);
 846             if (!ret) {
 847                 DEBUG_Printf(DBG_CHN_ERR, "Can't attach process %ld: %ld\n",
 848                              DEBUG_CurrPid, GetLastError());
 849                 goto leave;
 850             }
 851             DEBUG_CurrPid = pid;
 852         }
 853     }
 854
 855     if (DEBUG_CurrPid == 0 && argc > 1) {
 856         int     i, len;
 857         LPSTR   cmdLine;
 858
 859         if (!(cmdLine = DBG_alloc(len = 1))) goto oom_leave;
 860         cmdLine[0] = '\0';
 861
 862         for (i = 1; i < argc; i++) {
 863             len += strlen(argv[i]) + 1;
 864             if (!(cmdLine = DBG_realloc(cmdLine, len))) goto oom_leave;
 865             strcat(cmdLine, argv[i]);
 866             cmdLine[len - 2] = ' ';
 867             cmdLine[len - 1] = '\0';
 868         }
 869
 870         if (!DEBUG_Start(cmdLine)) {
 871             DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 872             goto leave;
 873         }
 874         DBG_free(DEBUG_LastCmdLine);
 875         DEBUG_LastCmdLine = cmdLine;
 876     }
 877
 878     retv = DEBUG_MainLoop();
 879  leave:
 880     /* saves modified variables */
 881     DEBUG_IntVarsRW(FALSE);
 882
 883     return retv;
 884
 885  oom_leave:
 886     DEBUG_Printf(DBG_CHN_MESG, "Out of memory\n");
 887     goto leave;
 888 }