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_WINE_STUB:
 448             {
 449                 char dll[32], name[64];
 450                 DEBUG_ProcessGetString( dll, sizeof(dll), DEBUG_CurrThread->process->handle,
 451                                         (char *)rec->ExceptionInformation[0] );
 452                 DEBUG_ProcessGetString( name, sizeof(name), DEBUG_CurrThread->process->handle,
 453                                         (char *)rec->ExceptionInformation[1] );
 454                 DEBUG_Printf(DBG_CHN_MESG, "unimplemented function %s.%s called", dll, name );
 455             }
 456             break;
 457         case EXCEPTION_VM86_INTx:
 458             DEBUG_Printf(DBG_CHN_MESG, "interrupt %02lx in vm86 mode",
 459                          rec->ExceptionInformation[0]);
 460             break;
 461         case EXCEPTION_VM86_STI:
 462             DEBUG_Printf(DBG_CHN_MESG, "sti in vm86 mode");
 463             break;
 464         case EXCEPTION_VM86_PICRETURN:
 465             DEBUG_Printf(DBG_CHN_MESG, "PIC return in vm86 mode");
 466             break;
 467         default:
 468             DEBUG_Printf(DBG_CHN_MESG, "%08lx", rec->ExceptionCode);
 469             break;
 470         }
 471         DEBUG_Printf(DBG_CHN_MESG, "\n");
 472     }
 473
 474     DEBUG_Printf(DBG_CHN_TRACE,
 475                  "Entering debugger     PC=%lx EFL=%08lx mode=%d count=%d\n",
 476 #ifdef __i386__
 477                  DEBUG_context.Eip, DEBUG_context.EFlags,
 478 #else
 479                  0L, 0L,
 480 #endif
 481                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 482
 483     if (DEBUG_ExceptionProlog(is_debug, force, rec->ExceptionCode)) {
 484         while ((ret = DEBUG_Parser())) {
 485             if (DEBUG_ValidateRegisters()) {
 486                 if (DEBUG_CurrThread->dbg_exec_mode != EXEC_PASS || first_chance)
 487                     break;
 488                 DEBUG_Printf(DBG_CHN_MESG, "Cannot pass on last chance exception. You must use cont\n");
 489             }
 490         }
 491     }
 492     *cont = DEBUG_ExceptionEpilog();
 493
 494     DEBUG_Printf(DBG_CHN_TRACE,
 495                  "Exiting debugger      PC=%lx EFL=%08lx mode=%d count=%d\n",
 496 #ifdef __i386__
 497                  DEBUG_context.Eip, DEBUG_context.EFlags,
 498 #else
 499                  0L, 0L,
 500 #endif
 501                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 502
 503     return ret;
 504 }
 505
 506 static  BOOL    DEBUG_HandleDebugEvent(DEBUG_EVENT* de, LPDWORD cont)
 507 {
 508     char                buffer[256];
 509     BOOL                ret;
 510
 511     DEBUG_CurrPid = de->dwProcessId;
 512     DEBUG_CurrTid = de->dwThreadId;
 513
 514     __TRY {
 515         ret = TRUE;
 516         *cont = 0L;
 517
 518         if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL)
 519             DEBUG_CurrThread = DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId);
 520         else
 521             DEBUG_CurrThread = NULL;
 522
 523         switch (de->dwDebugEventCode) {
 524         case EXCEPTION_DEBUG_EVENT:
 525             if (!DEBUG_CurrThread) {
 526                 DEBUG_Printf(DBG_CHN_ERR, "%08lx:%08lx: not a registered process or thread (perhaps a 16 bit one ?)\n",
 527                              de->dwProcessId, de->dwThreadId);
 528                 break;
 529             }
 530
 531             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exception code=%08lx\n",
 532                          de->dwProcessId, de->dwThreadId,
 533                          de->u.Exception.ExceptionRecord.ExceptionCode);
 534
 535             if (DEBUG_CurrProcess->continue_on_first_exception) {
 536                 DEBUG_CurrProcess->continue_on_first_exception = FALSE;
 537                 if (!DBG_IVAR(BreakOnAttach)) {
 538                     *cont = DBG_CONTINUE;
 539                     break;
 540                 }
 541             }
 542
 543             DEBUG_context.ContextFlags =  CONTEXT_CONTROL
 544                                         | CONTEXT_INTEGER
 545 #ifdef CONTEXT_SEGMENTS
 546                                         | CONTEXT_SEGMENTS
 547 #endif
 548 #ifdef CONTEXT_DEBUG_REGISTERS
 549                                         | CONTEXT_DEBUG_REGISTERS
 550 #endif
 551                                         ;
 552
 553             if (!GetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context)) {
 554                 DEBUG_Printf(DBG_CHN_WARN, "Can't get thread's context\n");
 555                 break;
 556             }
 557
 558             ret = DEBUG_HandleException(&de->u.Exception.ExceptionRecord,
 559                                         de->u.Exception.dwFirstChance,
 560                                         DEBUG_CurrThread->wait_for_first_exception,
 561                                         cont);
 562             if (DEBUG_CurrThread) {
 563                 DEBUG_CurrThread->wait_for_first_exception = 0;
 564                 SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
 565             }
 566             break;
 567
 568         case CREATE_THREAD_DEBUG_EVENT:
 569             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread D @%08lx\n", de->dwProcessId, de->dwThreadId,
 570                          (unsigned long)(LPVOID)de->u.CreateThread.lpStartAddress);
 571
 572             if (DEBUG_CurrProcess == NULL) {
 573                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 574                 break;
 575             }
 576             if (DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId) != NULL) {
 577                 DEBUG_Printf(DBG_CHN_TRACE, "Thread already listed, skipping\n");
 578                 break;
 579             }
 580
 581             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 582                                                de->dwThreadId,
 583                                                de->u.CreateThread.hThread,
 584                                                de->u.CreateThread.lpStartAddress,
 585                                                de->u.CreateThread.lpThreadLocalBase);
 586             if (!DEBUG_CurrThread) {
 587                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 588                 break;
 589             }
 590             DEBUG_InitCurrThread();
 591             break;
 592
 593         case CREATE_PROCESS_DEBUG_EVENT:
 594             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 595                                            de->u.CreateProcessInfo.hProcess,
 596                                            de->u.CreateProcessInfo.lpImageName);
 597
 598             /* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
 599             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create process %s @%08lx (%ld<%ld>)\n",
 600                          de->dwProcessId, de->dwThreadId,
 601                          buffer,
 602                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress,
 603                          de->u.CreateProcessInfo.dwDebugInfoFileOffset,
 604                          de->u.CreateProcessInfo.nDebugInfoSize);
 605
 606             if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL) {
 607                 if (DEBUG_CurrProcess->handle) {
 608                     DEBUG_Printf(DBG_CHN_ERR, "Skipping already defined process\n");
 609                     break;
 610                 }
 611                 DEBUG_CurrProcess->handle = de->u.CreateProcessInfo.hProcess;
 612             } else {
 613                 DEBUG_CurrProcess = DEBUG_AddProcess(de->dwProcessId,
 614                                                      de->u.CreateProcessInfo.hProcess);
 615                 if (DEBUG_CurrProcess == NULL) {
 616                     DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 617                     break;
 618                 }
 619             }
 620
 621             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread I @%08lx\n",
 622                          de->dwProcessId, de->dwThreadId,
 623                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress);
 624
 625             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 626                                                de->dwThreadId,
 627                                                de->u.CreateProcessInfo.hThread,
 628                                                de->u.CreateProcessInfo.lpStartAddress,
 629                                                de->u.CreateProcessInfo.lpThreadLocalBase);
 630             if (!DEBUG_CurrThread) {
 631                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 632                 break;
 633             }
 634
 635             DEBUG_InitCurrProcess();
 636             DEBUG_InitCurrThread();
 637
 638             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 639                                            DEBUG_CurrThread->process->handle,
 640                                            de->u.CreateProcessInfo.lpImageName);
 641             DEBUG_LoadModule32(buffer[0] ? buffer : "<Debugged process>",
 642                                de->u.CreateProcessInfo.hFile,
 643                                (DWORD)de->u.CreateProcessInfo.lpBaseOfImage);
 644
 645             if (buffer[0])  /* we got a process name */
 646             {
 647                 DWORD type;
 648                 if (!GetBinaryTypeA( buffer, &type ))
 649                 {
 650                     /* not a Windows binary, assume it's a Unix executable then */
 651                     DOS_FULL_NAME fullname;
 652                     /* HACK!! should fix DEBUG_ReadExecutableDbgInfo to accept DOS filenames */
 653                     if (DOSFS_GetFullName( buffer, TRUE, &fullname ))
 654                     {
 655                         DEBUG_ReadExecutableDbgInfo( fullname.long_name );
 656                         break;
 657                     }
 658                 }
 659             }
 660             /* if it is a Windows binary, or an invalid or missing file name,
 661              * we use wine itself as the main executable */
 662             DEBUG_ReadExecutableDbgInfo( "wine" );
 663             break;
 664
 665         case EXIT_THREAD_DEBUG_EVENT:
 666             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit thread (%ld)\n",
 667                          de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
 668
 669             if (DEBUG_CurrThread == NULL) {
 670                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 671                 break;
 672             }
 673             /* FIXME: remove break point set on thread startup */
 674             DEBUG_DelThread(DEBUG_CurrThread);
 675             break;
 676
 677         case EXIT_PROCESS_DEBUG_EVENT:
 678             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit process (%ld)\n",
 679                          de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
 680
 681             if (DEBUG_CurrProcess == NULL) {
 682                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 683                 break;
 684             }
 685             /* just in case */
 686             DEBUG_SetBreakpoints(FALSE);
 687             /* kill last thread */
 688             DEBUG_DelThread(DEBUG_CurrProcess->threads);
 689             DEBUG_DelProcess(DEBUG_CurrProcess);
 690
 691             DEBUG_Printf(DBG_CHN_MESG, "Process of pid=%08lx has terminated\n", DEBUG_CurrPid);
 692             break;
 693
 694         case LOAD_DLL_DEBUG_EVENT:
 695             if (DEBUG_CurrThread == NULL) {
 696                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 697                 break;
 698             }
 699             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 700                                            DEBUG_CurrThread->process->handle,
 701                                            de->u.LoadDll.lpImageName);
 702
 703             /* FIXME unicode: de->u.LoadDll.fUnicode */
 704             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
 705                          de->dwProcessId, de->dwThreadId,
 706                          buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
 707                          de->u.LoadDll.dwDebugInfoFileOffset,
 708                          de->u.LoadDll.nDebugInfoSize);
 709             CharUpper(buffer);
 710             DEBUG_LoadModule32(buffer, de->u.LoadDll.hFile, (DWORD)de->u.LoadDll.lpBaseOfDll);
 711             if (DBG_IVAR(BreakOnDllLoad)) {
 712                 DEBUG_Printf(DBG_CHN_MESG, "Stopping on DLL %s loading at %08lx\n",
 713                              buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll);
 714                 ret = DEBUG_Parser();
 715             }
 716             break;
 717
 718         case UNLOAD_DLL_DEBUG_EVENT:
 719             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unload DLL @%08lx\n", de->dwProcessId, de->dwThreadId,
 720                          (unsigned long)de->u.UnloadDll.lpBaseOfDll);
 721             break;
 722
 723         case OUTPUT_DEBUG_STRING_EVENT:
 724             if (DEBUG_CurrThread == NULL) {
 725                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 726                 break;
 727             }
 728
 729             DEBUG_ProcessGetString(buffer, sizeof(buffer),
 730                                    DEBUG_CurrThread->process->handle,
 731                                    de->u.DebugString.lpDebugStringData);
 732
 733             /* fixme unicode de->u.DebugString.fUnicode ? */
 734             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: output debug string (%s)\n",
 735                          de->dwProcessId, de->dwThreadId, buffer);
 736             break;
 737
 738         case RIP_EVENT:
 739             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: rip error=%ld type=%ld\n",
 740                          de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
 741                          de->u.RipInfo.dwType);
 742             break;
 743
 744         default:
 745             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unknown event (%ld)\n",
 746                          de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
 747         }
 748
 749     } __EXCEPT(wine_dbg) {
 750         *cont = 0;
 751         ret = TRUE;
 752     }
 753     __ENDTRY;
 754     return ret;
 755 }
 756
 757 static  DWORD   DEBUG_MainLoop(void)
 758 {
 759     DEBUG_EVENT         de;
 760     DWORD               cont;
 761     BOOL                ret;
 762
 763     DEBUG_Printf(DBG_CHN_MESG, " on pid %lx\n", DEBUG_CurrPid);
 764
 765     for (ret = TRUE; ret; ) {
 766         /* wait until we get at least one loaded process */
 767         while (!DEBUG_ProcessList && (ret = DEBUG_Parser()));
 768         if (!ret) break;
 769
 770         while (ret && DEBUG_ProcessList && WaitForDebugEvent(&de, INFINITE)) {
 771             ret = DEBUG_HandleDebugEvent(&de, &cont);
 772             ContinueDebugEvent(de.dwProcessId, de.dwThreadId, cont);
 773         }
 774     };
 775
 776     DEBUG_Printf(DBG_CHN_MESG, "WineDbg terminated on pid %lx\n", DEBUG_CurrPid);
 777
 778     return 0;
 779 }
 780
 781 static  BOOL    DEBUG_Start(LPSTR cmdLine)
 782 {
 783     PROCESS_INFORMATION info;
 784     STARTUPINFOA        startup;
 785
 786     memset(&startup, 0, sizeof(startup));
 787     startup.cb = sizeof(startup);
 788     startup.dwFlags = STARTF_USESHOWWINDOW;
 789     startup.wShowWindow = SW_SHOWNORMAL;
 790
 791     if (!CreateProcess(NULL, cmdLine, NULL, NULL,
 792                        FALSE, DEBUG_PROCESS, NULL, NULL, &startup, &info)) {
 793         DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 794         return FALSE;
 795     }
 796     DEBUG_CurrPid = info.dwProcessId;
 797     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(DEBUG_CurrPid, 0))) return FALSE;
 798
 799     return TRUE;
 800 }
 801
 802 void    DEBUG_Run(const char* args)
 803 {
 804     DBG_MODULE* wmod = DEBUG_GetProcessMainModule(DEBUG_CurrProcess);
 805     const char* pgm = (wmod) ? wmod->module_name : "none";
 806
 807     if (args) {
 808         DEBUG_Printf(DBG_CHN_MESG, "Run (%s) with '%s'\n", pgm, args);
 809     } else {
 810         if (!DEBUG_LastCmdLine) {
 811             DEBUG_Printf(DBG_CHN_MESG, "Cannot find previously used command line.\n");
 812             return;
 813         }
 814         DEBUG_Start(DEBUG_LastCmdLine);
 815     }
 816 }
 817
 818 int DEBUG_main(int argc, char** argv)
 819 {
 820     DWORD       retv = 0;
 821
 822 #ifdef DBG_need_heap
 823     /* Initialize the debugger heap. */
 824     dbg_heap = HeapCreate(HEAP_NO_SERIALIZE, 0x1000, 0x8000000); /* 128MB */
 825 #endif
 826
 827     /* Initialize the type handling stuff. */
 828     DEBUG_InitTypes();
 829     DEBUG_InitCVDataTypes();
 830
 831     /* Initialize internal vars (types must be initialized before) */
 832     if (!DEBUG_IntVarsRW(TRUE)) return -1;
 833
 834     /* keep it as a guiexe for now, so that Wine won't touch the Unix stdin,
 835      * stdout and stderr streams
 836      */
 837     if (DBG_IVAR(UseXTerm)) {
 838         COORD           pos;
 839
 840         /* This is a hack: it forces creation of an xterm, not done by default */
 841         pos.X = 0; pos.Y = 1;
 842         SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
 843     }
 844
 845     DEBUG_Printf(DBG_CHN_MESG, "Starting WineDbg... ");
 846
 847     if (argc == 3) {
 848         HANDLE  hEvent;
 849         DWORD   pid;
 850
 851         if ((pid = atoi(argv[1])) != 0 && (hEvent = atoi(argv[2])) != 0) {
 852             BOOL        ret = DEBUG_Attach(pid, TRUE);
 853
 854             SetEvent(hEvent);
 855             CloseHandle(hEvent);
 856             if (!ret) {
 857                 DEBUG_Printf(DBG_CHN_ERR, "Can't attach process %ld: %ld\n",
 858                              DEBUG_CurrPid, GetLastError());
 859                 goto leave;
 860             }
 861             DEBUG_CurrPid = pid;
 862         }
 863     }
 864
 865     if (DEBUG_CurrPid == 0 && argc > 1) {
 866         int     i, len;
 867         LPSTR   cmdLine;
 868
 869         if (!(cmdLine = DBG_alloc(len = 1))) goto oom_leave;
 870         cmdLine[0] = '\0';
 871
 872         for (i = 1; i < argc; i++) {
 873             len += strlen(argv[i]) + 1;
 874             if (!(cmdLine = DBG_realloc(cmdLine, len))) goto oom_leave;
 875             strcat(cmdLine, argv[i]);
 876             cmdLine[len - 2] = ' ';
 877             cmdLine[len - 1] = '\0';
 878         }
 879
 880         if (!DEBUG_Start(cmdLine)) {
 881             DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 882             goto leave;
 883         }
 884         DBG_free(DEBUG_LastCmdLine);
 885         DEBUG_LastCmdLine = cmdLine;
 886     }
 887
 888     retv = DEBUG_MainLoop();
 889  leave:
 890     /* saves modified variables */
 891     DEBUG_IntVarsRW(FALSE);
 892
 893     return retv;
 894
 895  oom_leave:
 896     DEBUG_Printf(DBG_CHN_MESG, "Out of memory\n");
 897     goto leave;
 898 }