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->num_modules = 0;
 149     p->next_index = 0;
 150     p->dbg_hdr_addr = 0;
 151
 152     p->next = DEBUG_ProcessList;
 153     p->prev = NULL;
 154     if (DEBUG_ProcessList) DEBUG_ProcessList->prev = p;
 155     DEBUG_ProcessList = p;
 156     return p;
 157 }
 158
 159 static  void                    DEBUG_DelThread(DBG_THREAD* p);
 160
 161 static  void                    DEBUG_DelProcess(DBG_PROCESS* p)
 162 {
 163     if (p->threads != NULL) {
 164         DEBUG_Printf(DBG_CHN_ERR, "Shouldn't happen\n");
 165         while (p->threads) DEBUG_DelThread(p->threads);
 166     }
 167     if (p->prev) p->prev->next = p->next;
 168     if (p->next) p->next->prev = p->prev;
 169     if (p == DEBUG_ProcessList) DEBUG_ProcessList = p->next;
 170     if (p == DEBUG_CurrProcess) DEBUG_CurrProcess = NULL;
 171     DBG_free(p);
 172 }
 173
 174 static  void                    DEBUG_InitCurrProcess(void)
 175 {
 176 }
 177
 178 static BOOL DEBUG_ProcessGetString(char* buffer, int size, HANDLE hp, LPSTR addr)
 179 {
 180     DWORD sz;
 181     *(WCHAR*)buffer = 0;
 182     return (addr && ReadProcessMemory(hp, addr, buffer, size, &sz));
 183 }
 184
 185 static BOOL DEBUG_ProcessGetStringIndirect(char* buffer, int size, HANDLE hp, LPVOID addr)
 186 {
 187     LPVOID      ad;
 188     DWORD       sz;
 189
 190     if (   addr
 191         && ReadProcessMemory(hp, addr, &ad, sizeof(ad), &sz)
 192         && sz == sizeof(ad)
 193         && ad
 194         && ReadProcessMemory(hp, ad, buffer, size, &sz))
 195         return TRUE;
 196     *(WCHAR*)buffer = 0;
 197     return FALSE;
 198 }
 199
 200 static  DBG_THREAD*     DEBUG_GetThread(DBG_PROCESS* p, DWORD tid)
 201 {
 202     DBG_THREAD* t;
 203
 204     for (t = p->threads; t; t = t->next)
 205         if (t->tid == tid) break;
 206     return t;
 207 }
 208
 209 static  DBG_THREAD*     DEBUG_AddThread(DBG_PROCESS* p, DWORD tid,
 210                                         HANDLE h, LPVOID start, LPVOID teb)
 211 {
 212     DBG_THREAD* t = DBG_alloc(sizeof(DBG_THREAD));
 213     if (!t)
 214         return NULL;
 215
 216     t->handle = h;
 217     t->tid = tid;
 218     t->start = start;
 219     t->teb = teb;
 220     t->process = p;
 221     t->wait_for_first_exception = 0;
 222     t->dbg_exec_mode = EXEC_CONT;
 223     t->dbg_exec_count = 0;
 224
 225     p->num_threads++;
 226     t->next = p->threads;
 227     t->prev = NULL;
 228     if (p->threads) p->threads->prev = t;
 229     p->threads = t;
 230
 231     return t;
 232 }
 233
 234 static  void                    DEBUG_InitCurrThread(void)
 235 {
 236     if (DEBUG_CurrThread->start) {
 237         if (DEBUG_CurrThread->process->num_threads == 1 ||
 238             DBG_IVAR(BreakAllThreadsStartup)) {
 239             DBG_VALUE   value;
 240
 241             DEBUG_SetBreakpoints(FALSE);
 242             value.type = NULL;
 243             value.cookie = DV_TARGET;
 244             value.addr.seg = 0;
 245             value.addr.off = (DWORD)DEBUG_CurrThread->start;
 246             DEBUG_AddBreakpoint(&value, NULL);
 247             DEBUG_SetBreakpoints(TRUE);
 248         }
 249     } else {
 250         DEBUG_CurrThread->wait_for_first_exception = 1;
 251     }
 252 }
 253
 254 static  void                    DEBUG_DelThread(DBG_THREAD* t)
 255 {
 256     if (t->prev) t->prev->next = t->next;
 257     if (t->next) t->next->prev = t->prev;
 258     if (t == t->process->threads) t->process->threads = t->next;
 259     t->process->num_threads--;
 260     if (t == DEBUG_CurrThread) DEBUG_CurrThread = NULL;
 261     DBG_free(t);
 262 }
 263
 264 BOOL                            DEBUG_Attach(DWORD pid, BOOL cofe)
 265 {
 266     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(pid, 0))) return FALSE;
 267
 268     if (!DebugActiveProcess(pid)) {
 269         DEBUG_Printf(DBG_CHN_ERR, "Can't attach process %ld: %ld\n",
 270                      pid, GetLastError());
 271         return FALSE;
 272     }
 273     DEBUG_CurrProcess->continue_on_first_exception = cofe;
 274     return TRUE;
 275 }
 276
 277 static  BOOL    DEBUG_ExceptionProlog(BOOL is_debug, BOOL force, DWORD code)
 278 {
 279     DBG_ADDR    addr;
 280     int         newmode;
 281
 282     DEBUG_GetCurrentAddress(&addr);
 283     DEBUG_SuspendExecution();
 284
 285     if (!is_debug) {
 286         if (!addr.seg)
 287             DEBUG_Printf(DBG_CHN_MESG, " in 32-bit code (0x%08lx).\n", addr.off);
 288         else
 289             switch(DEBUG_GetSelectorType(addr.seg))
 290             {
 291             case MODE_32:
 292                 DEBUG_Printf(DBG_CHN_MESG, " in 32-bit code (%04lx:%08lx).\n", addr.seg, addr.off);
 293                 break;
 294             case MODE_16:
 295                 DEBUG_Printf(DBG_CHN_MESG, " in 16-bit code (%04lx:%04lx).\n", addr.seg, addr.off);
 296                 break;
 297             case MODE_VM86:
 298                 DEBUG_Printf(DBG_CHN_MESG, " in vm86 code (%04lx:%04lx).\n", addr.seg, addr.off);
 299                 break;
 300             case MODE_INVALID:
 301                 DEBUG_Printf(DBG_CHN_MESG, "bad CS (%lx)\n", addr.seg);
 302                 break;
 303         }
 304     }
 305
 306     DEBUG_LoadEntryPoints("Loading new modules symbols:\n");
 307
 308     if (!force && is_debug &&
 309         DEBUG_ShouldContinue(&addr,
 310                              code,
 311                              DEBUG_CurrThread->dbg_exec_mode,
 312                              &DEBUG_CurrThread->dbg_exec_count))
 313         return FALSE;
 314
 315     if ((newmode = DEBUG_GetSelectorType(addr.seg)) == MODE_INVALID) newmode = MODE_32;
 316     if (newmode != DEBUG_CurrThread->dbg_mode)
 317     {
 318         static const char * const names[] = { "???", "16-bit", "32-bit", "vm86" };
 319         DEBUG_Printf(DBG_CHN_MESG,"In %s mode.\n", names[newmode] );
 320         DEBUG_CurrThread->dbg_mode = newmode;
 321     }
 322
 323     DEBUG_DoDisplay();
 324
 325     if (is_debug || force) {
 326         /*
 327          * Do a quiet backtrace so that we have an idea of what the situation
 328          * is WRT the source files.
 329          */
 330         DEBUG_BackTrace(FALSE);
 331     } else {
 332         /* This is a real crash, dump some info */
 333         DEBUG_InfoRegisters();
 334         DEBUG_InfoStack();
 335 #ifdef __i386__
 336         if (DEBUG_CurrThread->dbg_mode == MODE_16) {
 337             DEBUG_InfoSegments(DEBUG_context.SegDs >> 3, 1);
 338             if (DEBUG_context.SegEs != DEBUG_context.SegDs)
 339                 DEBUG_InfoSegments(DEBUG_context.SegEs >> 3, 1);
 340         }
 341         DEBUG_InfoSegments(DEBUG_context.SegFs >> 3, 1);
 342 #endif
 343         DEBUG_BackTrace(TRUE);
 344     }
 345
 346     if (!is_debug ||
 347         (DEBUG_CurrThread->dbg_exec_mode == EXEC_STEPI_OVER) ||
 348         (DEBUG_CurrThread->dbg_exec_mode == EXEC_STEPI_INSTR)) {
 349
 350         struct list_id list;
 351
 352         /* Show where we crashed */
 353         curr_frame = 0;
 354         DEBUG_DisassembleInstruction(&addr);
 355
 356         /* resets list internal arguments so we can look at source code when needed */
 357         DEBUG_FindNearestSymbol(&addr, TRUE, NULL, 0, &list);
 358         if (list.sourcefile) DEBUG_List(&list, NULL, 0);
 359     }
 360     return TRUE;
 361 }
 362
 363 static  DWORD   DEBUG_ExceptionEpilog(void)
 364 {
 365     DEBUG_CurrThread->dbg_exec_mode = DEBUG_RestartExecution(DEBUG_CurrThread->dbg_exec_mode,
 366                                                              DEBUG_CurrThread->dbg_exec_count);
 367     /*
 368      * This will have gotten absorbed into the breakpoint info
 369      * if it was used.  Otherwise it would have been ignored.
 370      * In any case, we don't mess with it any more.
 371      */
 372     if (DEBUG_CurrThread->dbg_exec_mode == EXEC_CONT || DEBUG_CurrThread->dbg_exec_mode == EXEC_PASS)
 373         DEBUG_CurrThread->dbg_exec_count = 0;
 374
 375     return (DEBUG_CurrThread->dbg_exec_mode == EXEC_PASS) ? DBG_EXCEPTION_NOT_HANDLED : DBG_CONTINUE;
 376 }
 377
 378 static  BOOL    DEBUG_HandleException(EXCEPTION_RECORD *rec, BOOL first_chance, BOOL force, LPDWORD cont)
 379 {
 380     BOOL             is_debug = FALSE;
 381     BOOL             ret = TRUE;
 382     THREADNAME_INFO *pThreadName;
 383     DBG_THREAD      *pThread;
 384
 385
 386     *cont = DBG_CONTINUE;
 387
 388     switch (rec->ExceptionCode)
 389     {
 390     case EXCEPTION_BREAKPOINT:
 391     case EXCEPTION_SINGLE_STEP:
 392         is_debug = TRUE;
 393         break;
 394     case EXCEPTION_NAME_THREAD:
 395         pThreadName = (THREADNAME_INFO*)(rec->ExceptionInformation);
 396         if (pThreadName->dwThreadID == -1)
 397             pThread = DEBUG_CurrThread;
 398         else
 399             pThread = DEBUG_GetThread(DEBUG_CurrProcess, pThreadName->dwThreadID);
 400
 401         if (ReadProcessMemory(DEBUG_CurrThread->process->handle, pThreadName->szName,
 402                               pThread->name, 9, NULL))
 403             DEBUG_Printf (DBG_CHN_MESG,
 404                           "Thread ID=0x%lx renamed using MS VC6 extension (name==\"%s\")\n",
 405                           pThread->tid, pThread->name);
 406         return TRUE;
 407     }
 408
 409     if (first_chance && !force && !DBG_IVAR(BreakOnFirstChance))
 410     {
 411         /* pass exception to program except for debug exceptions */
 412         *cont = is_debug ? DBG_CONTINUE : DBG_EXCEPTION_NOT_HANDLED;
 413         return TRUE;
 414     }
 415
 416     if (!is_debug)
 417     {
 418         /* print some infos */
 419         DEBUG_Printf(DBG_CHN_MESG, "%s: ",
 420                       first_chance ? "First chance exception" : "Unhandled exception");
 421         switch (rec->ExceptionCode)
 422         {
 423         case EXCEPTION_INT_DIVIDE_BY_ZERO:
 424             DEBUG_Printf(DBG_CHN_MESG, "divide by zero");
 425             break;
 426         case EXCEPTION_INT_OVERFLOW:
 427             DEBUG_Printf(DBG_CHN_MESG, "overflow");
 428             break;
 429         case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 430             DEBUG_Printf(DBG_CHN_MESG, "array bounds ");
 431             break;
 432         case EXCEPTION_ILLEGAL_INSTRUCTION:
 433             DEBUG_Printf(DBG_CHN_MESG, "illegal instruction");
 434             break;
 435         case EXCEPTION_STACK_OVERFLOW:
 436             DEBUG_Printf(DBG_CHN_MESG, "stack overflow");
 437             break;
 438         case EXCEPTION_PRIV_INSTRUCTION:
 439             DEBUG_Printf(DBG_CHN_MESG, "priviledged instruction");
 440             break;
 441         case EXCEPTION_ACCESS_VIOLATION:
 442             if (rec->NumberParameters == 2)
 443                 DEBUG_Printf(DBG_CHN_MESG, "page fault on %s access to 0x%08lx",
 444                               rec->ExceptionInformation[0] ? "write" : "read",
 445                               rec->ExceptionInformation[1]);
 446             else
 447                 DEBUG_Printf(DBG_CHN_MESG, "page fault");
 448             break;
 449         case EXCEPTION_DATATYPE_MISALIGNMENT:
 450             DEBUG_Printf(DBG_CHN_MESG, "Alignment");
 451             break;
 452         case CONTROL_C_EXIT:
 453             DEBUG_Printf(DBG_CHN_MESG, "^C");
 454             break;
 455         case EXCEPTION_CRITICAL_SECTION_WAIT:
 456             DEBUG_Printf(DBG_CHN_MESG, "critical section %08lx wait failed",
 457                           rec->ExceptionInformation[0]);
 458             if (!DBG_IVAR(BreakOnCritSectTimeOut))
 459             {
 460                 DEBUG_Printf(DBG_CHN_MESG, "\n");
 461                 return TRUE;
 462             }
 463             break;
 464         case EXCEPTION_WINE_STUB:
 465             {
 466                 char dll[32], name[64];
 467                 DEBUG_ProcessGetString( dll, sizeof(dll), DEBUG_CurrThread->process->handle,
 468                                         (char *)rec->ExceptionInformation[0] );
 469                 DEBUG_ProcessGetString( name, sizeof(name), DEBUG_CurrThread->process->handle,
 470                                         (char *)rec->ExceptionInformation[1] );
 471                 DEBUG_Printf(DBG_CHN_MESG, "unimplemented function %s.%s called", dll, name );
 472             }
 473             break;
 474         case EXCEPTION_VM86_INTx:
 475             DEBUG_Printf(DBG_CHN_MESG, "interrupt %02lx in vm86 mode",
 476                          rec->ExceptionInformation[0]);
 477             break;
 478         case EXCEPTION_VM86_STI:
 479             DEBUG_Printf(DBG_CHN_MESG, "sti in vm86 mode");
 480             break;
 481         case EXCEPTION_VM86_PICRETURN:
 482             DEBUG_Printf(DBG_CHN_MESG, "PIC return in vm86 mode");
 483             break;
 484         default:
 485             DEBUG_Printf(DBG_CHN_MESG, "%08lx", rec->ExceptionCode);
 486             break;
 487         }
 488         DEBUG_Printf(DBG_CHN_MESG, "\n");
 489     }
 490
 491     DEBUG_Printf(DBG_CHN_TRACE,
 492                  "Entering debugger     PC=%lx EFL=%08lx mode=%d count=%d\n",
 493 #ifdef __i386__
 494                  DEBUG_context.Eip, DEBUG_context.EFlags,
 495 #else
 496                  0L, 0L,
 497 #endif
 498                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 499
 500     if (DEBUG_ExceptionProlog(is_debug, force, rec->ExceptionCode)) {
 501         while ((ret = DEBUG_Parser())) {
 502             if (DEBUG_ValidateRegisters()) {
 503                 if (DEBUG_CurrThread->dbg_exec_mode != EXEC_PASS || first_chance)
 504                     break;
 505                 DEBUG_Printf(DBG_CHN_MESG, "Cannot pass on last chance exception. You must use cont\n");
 506             }
 507         }
 508     }
 509     *cont = DEBUG_ExceptionEpilog();
 510
 511     DEBUG_Printf(DBG_CHN_TRACE,
 512                  "Exiting debugger      PC=%lx EFL=%08lx mode=%d count=%d\n",
 513 #ifdef __i386__
 514                  DEBUG_context.Eip, DEBUG_context.EFlags,
 515 #else
 516                  0L, 0L,
 517 #endif
 518                  DEBUG_CurrThread->dbg_exec_mode, DEBUG_CurrThread->dbg_exec_count);
 519
 520     return ret;
 521 }
 522
 523 static  BOOL    DEBUG_HandleDebugEvent(DEBUG_EVENT* de, LPDWORD cont)
 524 {
 525     char                buffer[256];
 526     BOOL                ret;
 527
 528     DEBUG_CurrPid = de->dwProcessId;
 529     DEBUG_CurrTid = de->dwThreadId;
 530
 531     __TRY {
 532         ret = TRUE;
 533         *cont = 0L;
 534
 535         if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL)
 536             DEBUG_CurrThread = DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId);
 537         else
 538             DEBUG_CurrThread = NULL;
 539
 540         switch (de->dwDebugEventCode) {
 541         case EXCEPTION_DEBUG_EVENT:
 542             if (!DEBUG_CurrThread) {
 543                 DEBUG_Printf(DBG_CHN_ERR, "%08lx:%08lx: not a registered process or thread (perhaps a 16 bit one ?)\n",
 544                              de->dwProcessId, de->dwThreadId);
 545                 break;
 546             }
 547
 548             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exception code=%08lx\n",
 549                          de->dwProcessId, de->dwThreadId,
 550                          de->u.Exception.ExceptionRecord.ExceptionCode);
 551
 552             if (DEBUG_CurrProcess->continue_on_first_exception) {
 553                 DEBUG_CurrProcess->continue_on_first_exception = FALSE;
 554                 if (!DBG_IVAR(BreakOnAttach)) {
 555                     *cont = DBG_CONTINUE;
 556                     break;
 557                 }
 558             }
 559
 560             DEBUG_context.ContextFlags =  CONTEXT_CONTROL
 561                                         | CONTEXT_INTEGER
 562 #ifdef CONTEXT_SEGMENTS
 563                                         | CONTEXT_SEGMENTS
 564 #endif
 565 #ifdef CONTEXT_DEBUG_REGISTERS
 566                                         | CONTEXT_DEBUG_REGISTERS
 567 #endif
 568                                         ;
 569
 570             if (!GetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context)) {
 571                 DEBUG_Printf(DBG_CHN_WARN, "Can't get thread's context\n");
 572                 break;
 573             }
 574
 575             ret = DEBUG_HandleException(&de->u.Exception.ExceptionRecord,
 576                                         de->u.Exception.dwFirstChance,
 577                                         DEBUG_CurrThread->wait_for_first_exception,
 578                                         cont);
 579             if (DEBUG_CurrThread) {
 580                 DEBUG_CurrThread->wait_for_first_exception = 0;
 581                 SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
 582             }
 583             break;
 584
 585         case CREATE_THREAD_DEBUG_EVENT:
 586             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread D @%08lx\n", de->dwProcessId, de->dwThreadId,
 587                          (unsigned long)(LPVOID)de->u.CreateThread.lpStartAddress);
 588
 589             if (DEBUG_CurrProcess == NULL) {
 590                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 591                 break;
 592             }
 593             if (DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId) != NULL) {
 594                 DEBUG_Printf(DBG_CHN_TRACE, "Thread already listed, skipping\n");
 595                 break;
 596             }
 597
 598             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 599                                                de->dwThreadId,
 600                                                de->u.CreateThread.hThread,
 601                                                de->u.CreateThread.lpStartAddress,
 602                                                de->u.CreateThread.lpThreadLocalBase);
 603             if (!DEBUG_CurrThread) {
 604                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 605                 break;
 606             }
 607             DEBUG_InitCurrThread();
 608             break;
 609
 610         case CREATE_PROCESS_DEBUG_EVENT:
 611             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 612                                            de->u.CreateProcessInfo.hProcess,
 613                                            de->u.CreateProcessInfo.lpImageName);
 614
 615             /* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
 616             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create process %s @%08lx (%ld<%ld>)\n",
 617                          de->dwProcessId, de->dwThreadId,
 618                          buffer,
 619                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress,
 620                          de->u.CreateProcessInfo.dwDebugInfoFileOffset,
 621                          de->u.CreateProcessInfo.nDebugInfoSize);
 622
 623             if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL) {
 624                 if (DEBUG_CurrProcess->handle) {
 625                     DEBUG_Printf(DBG_CHN_ERR, "Skipping already defined process\n");
 626                     break;
 627                 }
 628                 DEBUG_CurrProcess->handle = de->u.CreateProcessInfo.hProcess;
 629             } else {
 630                 DEBUG_CurrProcess = DEBUG_AddProcess(de->dwProcessId,
 631                                                      de->u.CreateProcessInfo.hProcess);
 632                 if (DEBUG_CurrProcess == NULL) {
 633                     DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 634                     break;
 635                 }
 636             }
 637
 638             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread I @%08lx\n",
 639                          de->dwProcessId, de->dwThreadId,
 640                          (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress);
 641
 642             DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 643                                                de->dwThreadId,
 644                                                de->u.CreateProcessInfo.hThread,
 645                                                de->u.CreateProcessInfo.lpStartAddress,
 646                                                de->u.CreateProcessInfo.lpThreadLocalBase);
 647             if (!DEBUG_CurrThread) {
 648                 DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 649                 break;
 650             }
 651
 652             DEBUG_InitCurrProcess();
 653             DEBUG_InitCurrThread();
 654
 655             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 656                                            DEBUG_CurrThread->process->handle,
 657                                            de->u.CreateProcessInfo.lpImageName);
 658             DEBUG_LoadModule32(buffer[0] ? buffer : "<Debugged process>",
 659                                de->u.CreateProcessInfo.hFile,
 660                                (DWORD)de->u.CreateProcessInfo.lpBaseOfImage);
 661
 662             if (buffer[0])  /* we got a process name */
 663             {
 664                 DWORD type;
 665                 if (!GetBinaryTypeA( buffer, &type ))
 666                 {
 667                     /* not a Windows binary, assume it's a Unix executable then */
 668                     char unixname[MAX_PATH];
 669                     /* HACK!! should fix DEBUG_ReadExecutableDbgInfo to accept DOS filenames */
 670                     if (wine_get_unix_file_name( buffer, unixname, sizeof(unixname) ))
 671                     {
 672                         DEBUG_ReadExecutableDbgInfo( unixname );
 673                         break;
 674                     }
 675                 }
 676             }
 677             /* if it is a Windows binary, or an invalid or missing file name,
 678              * we use wine itself as the main executable */
 679             DEBUG_ReadExecutableDbgInfo( "wine" );
 680             break;
 681
 682         case EXIT_THREAD_DEBUG_EVENT:
 683             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit thread (%ld)\n",
 684                          de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
 685
 686             if (DEBUG_CurrThread == NULL) {
 687                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 688                 break;
 689             }
 690             /* FIXME: remove break point set on thread startup */
 691             DEBUG_DelThread(DEBUG_CurrThread);
 692             break;
 693
 694         case EXIT_PROCESS_DEBUG_EVENT:
 695             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit process (%ld)\n",
 696                          de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
 697
 698             if (DEBUG_CurrProcess == NULL) {
 699                 DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 700                 break;
 701             }
 702             /* just in case */
 703             DEBUG_SetBreakpoints(FALSE);
 704             /* kill last thread */
 705             DEBUG_DelThread(DEBUG_CurrProcess->threads);
 706             DEBUG_DelProcess(DEBUG_CurrProcess);
 707
 708             DEBUG_Printf(DBG_CHN_MESG, "Process of pid=%08lx has terminated\n", DEBUG_CurrPid);
 709             break;
 710
 711         case LOAD_DLL_DEBUG_EVENT:
 712             if (DEBUG_CurrThread == NULL) {
 713                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 714                 break;
 715             }
 716             DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 717                                            DEBUG_CurrThread->process->handle,
 718                                            de->u.LoadDll.lpImageName);
 719
 720             /* FIXME unicode: de->u.LoadDll.fUnicode */
 721             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
 722                          de->dwProcessId, de->dwThreadId,
 723                          buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
 724                          de->u.LoadDll.dwDebugInfoFileOffset,
 725                          de->u.LoadDll.nDebugInfoSize);
 726             CharUpper(buffer);
 727             DEBUG_LoadModule32(buffer, de->u.LoadDll.hFile, (DWORD)de->u.LoadDll.lpBaseOfDll);
 728             if (DBG_IVAR(BreakOnDllLoad)) {
 729                 DEBUG_Printf(DBG_CHN_MESG, "Stopping on DLL %s loading at %08lx\n",
 730                              buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll);
 731                 ret = DEBUG_Parser();
 732             }
 733             break;
 734
 735         case UNLOAD_DLL_DEBUG_EVENT:
 736             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unload DLL @%08lx\n", de->dwProcessId, de->dwThreadId,
 737                          (unsigned long)de->u.UnloadDll.lpBaseOfDll);
 738             break;
 739
 740         case OUTPUT_DEBUG_STRING_EVENT:
 741             if (DEBUG_CurrThread == NULL) {
 742                 DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 743                 break;
 744             }
 745
 746             DEBUG_ProcessGetString(buffer, sizeof(buffer),
 747                                    DEBUG_CurrThread->process->handle,
 748                                    de->u.DebugString.lpDebugStringData);
 749
 750             /* fixme unicode de->u.DebugString.fUnicode ? */
 751             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: output debug string (%s)\n",
 752                          de->dwProcessId, de->dwThreadId, buffer);
 753             break;
 754
 755         case RIP_EVENT:
 756             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: rip error=%ld type=%ld\n",
 757                          de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
 758                          de->u.RipInfo.dwType);
 759             break;
 760
 761         default:
 762             DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unknown event (%ld)\n",
 763                          de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
 764         }
 765
 766     } __EXCEPT(wine_dbg) {
 767         *cont = 0;
 768         ret = TRUE;
 769     }
 770     __ENDTRY;
 771     return ret;
 772 }
 773
 774 static  DWORD   DEBUG_MainLoop(void)
 775 {
 776     DEBUG_EVENT         de;
 777     DWORD               cont;
 778     BOOL                ret;
 779
 780     DEBUG_Printf(DBG_CHN_MESG, " on pid %lx\n", DEBUG_CurrPid);
 781
 782     for (ret = TRUE; ret; ) {
 783         /* wait until we get at least one loaded process */
 784         while (!DEBUG_ProcessList && (ret = DEBUG_Parser()));
 785         if (!ret) break;
 786
 787         while (ret && DEBUG_ProcessList && WaitForDebugEvent(&de, INFINITE)) {
 788             ret = DEBUG_HandleDebugEvent(&de, &cont);
 789             ContinueDebugEvent(de.dwProcessId, de.dwThreadId, cont);
 790         }
 791     };
 792
 793     DEBUG_Printf(DBG_CHN_MESG, "WineDbg terminated on pid %lx\n", DEBUG_CurrPid);
 794
 795     return 0;
 796 }
 797
 798 static  BOOL    DEBUG_Start(LPSTR cmdLine)
 799 {
 800     PROCESS_INFORMATION info;
 801     STARTUPINFOA        startup;
 802
 803     memset(&startup, 0, sizeof(startup));
 804     startup.cb = sizeof(startup);
 805     startup.dwFlags = STARTF_USESHOWWINDOW;
 806     startup.wShowWindow = SW_SHOWNORMAL;
 807
 808     if (!CreateProcess(NULL, cmdLine, NULL, NULL,
 809                        FALSE, DEBUG_PROCESS, NULL, NULL, &startup, &info)) {
 810         DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 811         return FALSE;
 812     }
 813     DEBUG_CurrPid = info.dwProcessId;
 814     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(DEBUG_CurrPid, 0))) return FALSE;
 815
 816     return TRUE;
 817 }
 818
 819 void    DEBUG_Run(const char* args)
 820 {
 821     DBG_MODULE* wmod = DEBUG_GetProcessMainModule(DEBUG_CurrProcess);
 822     const char* pgm = (wmod) ? wmod->module_name : "none";
 823
 824     if (args) {
 825         DEBUG_Printf(DBG_CHN_MESG, "Run (%s) with '%s'\n", pgm, args);
 826     } else {
 827         if (!DEBUG_LastCmdLine) {
 828             DEBUG_Printf(DBG_CHN_MESG, "Cannot find previously used command line.\n");
 829             return;
 830         }
 831         DEBUG_Start(DEBUG_LastCmdLine);
 832     }
 833 }
 834
 835 int DEBUG_main(int argc, char** argv)
 836 {
 837     DWORD       retv = 0;
 838
 839 #ifdef DBG_need_heap
 840     /* Initialize the debugger heap. */
 841     dbg_heap = HeapCreate(HEAP_NO_SERIALIZE, 0x1000, 0x8000000); /* 128MB */
 842 #endif
 843
 844     /* Initialize the type handling stuff. */
 845     DEBUG_InitTypes();
 846     DEBUG_InitCVDataTypes();
 847
 848     /* Initialize internal vars (types must be initialized before) */
 849     if (!DEBUG_IntVarsRW(TRUE)) return -1;
 850
 851     /* keep it as a guiexe for now, so that Wine won't touch the Unix stdin,
 852      * stdout and stderr streams
 853      */
 854     if (DBG_IVAR(UseXTerm)) {
 855         COORD           pos;
 856
 857         /* This is a hack: it forces creation of an xterm, not done by default */
 858         pos.X = 0; pos.Y = 1;
 859         SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
 860     }
 861
 862     DEBUG_Printf(DBG_CHN_MESG, "WineDbg starting... ");
 863
 864     if (argc == 3) {
 865         HANDLE  hEvent;
 866         DWORD   pid;
 867
 868         if ((pid = atoi(argv[1])) != 0 && (hEvent = (HANDLE)atoi(argv[2])) != 0) {
 869             BOOL        ret = DEBUG_Attach(pid, TRUE);
 870
 871             SetEvent(hEvent);
 872             CloseHandle(hEvent);
 873             if (!ret) {
 874                 DEBUG_Printf(DBG_CHN_ERR, "Can't attach process %ld: %ld\n",
 875                              DEBUG_CurrPid, GetLastError());
 876                 goto leave;
 877             }
 878             DEBUG_CurrPid = pid;
 879         }
 880     }
 881
 882     if (DEBUG_CurrPid == 0 && argc > 1) {
 883         int     i, len;
 884         LPSTR   cmdLine;
 885
 886         if (!(cmdLine = DBG_alloc(len = 1))) goto oom_leave;
 887         cmdLine[0] = '\0';
 888
 889         for (i = 1; i < argc; i++) {
 890             len += strlen(argv[i]) + 1;
 891             if (!(cmdLine = DBG_realloc(cmdLine, len))) goto oom_leave;
 892             strcat(cmdLine, argv[i]);
 893             cmdLine[len - 2] = ' ';
 894             cmdLine[len - 1] = '\0';
 895         }
 896
 897         if (!DEBUG_Start(cmdLine)) {
 898             DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 899             goto leave;
 900         }
 901         DBG_free(DEBUG_LastCmdLine);
 902         DEBUG_LastCmdLine = cmdLine;
 903     }
 904
 905     retv = DEBUG_MainLoop();
 906  leave:
 907     /* saves modified variables */
 908     DEBUG_IntVarsRW(FALSE);
 909
 910     return retv;
 911
 912  oom_leave:
 913     DEBUG_Printf(DBG_CHN_MESG, "Out of memory\n");
 914     goto leave;
 915 }