debugger/winedbg.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2
   3 /* Wine internal debugger
   4  * Interface to Windows debugger API
   5  * Copyright 2000 Eric Pouech
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <stdlib.h>
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include "debugger.h"
  27
  28 #include "ntddk.h"
  29 #include "thread.h"
  30 #include "wincon.h"
  31 #include "winreg.h"
  32 #include "wingdi.h"
  33 #include "winuser.h"
  34 #include "msvcrt/excpt.h"
  35 #include "wine/library.h"
  36
  37 DBG_PROCESS*    DEBUG_CurrProcess = NULL;
  38 DBG_THREAD*     DEBUG_CurrThread = NULL;
  39 DWORD           DEBUG_CurrTid;
  40 DWORD           DEBUG_CurrPid;
  41 CONTEXT         DEBUG_context;
  42 BOOL            DEBUG_InteractiveP = FALSE;
  43 int             curr_frame = 0;
  44 static char*    DEBUG_LastCmdLine = NULL;
  45
  46 static DBG_PROCESS* DEBUG_ProcessList = NULL;
  47 static enum {none_mode = 0, winedbg_mode, automatic_mode, gdb_mode} local_mode;
  48
  49 DBG_INTVAR DEBUG_IntVars[DBG_IV_LAST];
  50
  51 void    DEBUG_OutputA(int chn, const char* buffer, int len)
  52 {
  53     if (DBG_IVAR(ConChannelMask) & chn)
  54         WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), buffer, len, NULL, NULL);
  55     if (DBG_IVAR(StdChannelMask) & chn)
  56         fwrite(buffer, len, 1, stderr);
  57 }
  58
  59 void    DEBUG_OutputW(int chn, const WCHAR* buffer, int len)
  60 {
  61     /* FIXME: this won't work is std output isn't attached to a console */
  62     if (DBG_IVAR(ConChannelMask) & chn)
  63         WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE), buffer, len, NULL, NULL);
  64     /* simplistic Unicode to ANSI conversion */
  65     if (DBG_IVAR(StdChannelMask) & chn)
  66         while (len--) fputc((char)*buffer++, stderr);
  67 }
  68
  69 int     DEBUG_Printf(int chn, const char* format, ...)
  70 {
  71 static    char  buf[4*1024];
  72     va_list     valist;
  73     int         len;
  74
  75     va_start(valist, format);
  76     len = vsnprintf(buf, sizeof(buf), format, valist);
  77     va_end(valist);
  78
  79     if (len <= -1 || len >= sizeof(buf)) {
  80         len = sizeof(buf) - 1;
  81         buf[len] = 0;
  82         buf[len - 1] = buf[len - 2] = buf[len - 3] = '.';
  83     }
  84     DEBUG_OutputA(chn, buf, len);
  85     return len;
  86 }
  87
  88 static  BOOL DEBUG_IntVarsRW(int read)
  89 {
  90     HKEY        hkey;
  91     DWORD       type = REG_DWORD;
  92     DWORD       val;
  93     DWORD       count = sizeof(val);
  94     int         i;
  95     DBG_INTVAR* div = DEBUG_IntVars;
  96
  97     if (read) {
  98 /* initializes internal vars table */
  99 #define  INTERNAL_VAR(_var,_val,_ref,_typ)                      \
 100         div->val = _val; div->name = #_var; div->pval = _ref;   \
 101         div->type = DEBUG_GetBasicType(_typ); div++;
 102 #include "intvar.h"
 103 #undef   INTERNAL_VAR
 104     }
 105
 106     if (RegCreateKeyA(HKEY_CURRENT_USER, "Software\\Wine\\WineDbg", &hkey)) {
 107         /* since the IVars are not yet setup, DEBUG_Printf doesn't work,
 108          * so don't use it */
 109         fprintf(stderr, "Cannot create WineDbg key in registry\n");
 110         return FALSE;
 111     }
 112
 113     for (i = 0; i < DBG_IV_LAST; i++) {
 114         if (read) {
 115             if (!DEBUG_IntVars[i].pval) {
 116                 if (!RegQueryValueEx(hkey, DEBUG_IntVars[i].name, 0,
 117                                      &type, (LPSTR)&val, &count))
 118                     DEBUG_IntVars[i].val = val;
 119                 DEBUG_IntVars[i].pval = &DEBUG_IntVars[i].val;
 120             } else {
 121                 *DEBUG_IntVars[i].pval = 0;
 122             }
 123         } else {
 124             /* FIXME: type should be infered from basic type -if any- of intvar */
 125             if (DEBUG_IntVars[i].pval == &DEBUG_IntVars[i].val)
 126                 RegSetValueEx(hkey, DEBUG_IntVars[i].name, 0,
 127                               type, (LPCVOID)DEBUG_IntVars[i].pval, count);
 128         }
 129     }
 130     RegCloseKey(hkey);
 131     return TRUE;
 132 }
 133
 134 DBG_INTVAR*     DEBUG_GetIntVar(const char* name)
 135 {
 136     int         i;
 137
 138     for (i = 0; i < DBG_IV_LAST; i++) {
 139         if (!strcmp(DEBUG_IntVars[i].name, name))
 140             return &DEBUG_IntVars[i];
 141     }
 142     return NULL;
 143 }
 144
 145 DBG_PROCESS*    DEBUG_GetProcess(DWORD pid)
 146 {
 147     DBG_PROCESS*        p;
 148
 149     for (p = DEBUG_ProcessList; p; p = p->next)
 150         if (p->pid == pid) break;
 151     return p;
 152 }
 153
 154 DBG_PROCESS*    DEBUG_AddProcess(DWORD pid, HANDLE h, const char* imageName)
 155 {
 156     DBG_PROCESS*        p;
 157
 158     if ((p = DEBUG_GetProcess(pid)))
 159     {
 160         if (p->handle != 0)
 161         {
 162             DEBUG_Printf(DBG_CHN_ERR, "Process (%lu) is already defined\n", pid);
 163         }
 164         else
 165         {
 166             p->handle = h;
 167             p->imageName = imageName ? DBG_strdup(imageName) : NULL;
 168         }
 169         return p;
 170     }
 171
 172     if (!(p = DBG_alloc(sizeof(DBG_PROCESS)))) return NULL;
 173     p->handle = h;
 174     p->pid = pid;
 175     p->imageName = imageName ? DBG_strdup(imageName) : NULL;
 176     p->threads = NULL;
 177     p->num_threads = 0;
 178     p->continue_on_first_exception = FALSE;
 179     p->modules = NULL;
 180     p->num_modules = 0;
 181     p->next_index = 0;
 182     p->dbg_hdr_addr = 0;
 183     p->delayed_bp = NULL;
 184     p->num_delayed_bp = 0;
 185
 186     p->next = DEBUG_ProcessList;
 187     p->prev = NULL;
 188     if (DEBUG_ProcessList) DEBUG_ProcessList->prev = p;
 189     DEBUG_ProcessList = p;
 190     return p;
 191 }
 192
 193 void DEBUG_DelProcess(DBG_PROCESS* p)
 194 {
 195     int i;
 196
 197     while (p->threads) DEBUG_DelThread(p->threads);
 198
 199     for (i = 0; i < p->num_delayed_bp; i++)
 200         if (p->delayed_bp[i].is_symbol)
 201             DBG_free(p->delayed_bp[i].u.symbol.name);
 202
 203     DBG_free(p->delayed_bp);
 204     if (p->prev) p->prev->next = p->next;
 205     if (p->next) p->next->prev = p->prev;
 206     if (p == DEBUG_ProcessList) DEBUG_ProcessList = p->next;
 207     if (p == DEBUG_CurrProcess) DEBUG_CurrProcess = NULL;
 208     DBG_free((char*)p->imageName);
 209     DBG_free(p);
 210 }
 211
 212 static  void                    DEBUG_InitCurrProcess(void)
 213 {
 214 }
 215
 216 BOOL DEBUG_ProcessGetString(char* buffer, int size, HANDLE hp, LPSTR addr)
 217 {
 218     DWORD sz;
 219     *(WCHAR*)buffer = 0;
 220     return (addr && ReadProcessMemory(hp, addr, buffer, size, &sz));
 221 }
 222
 223 BOOL DEBUG_ProcessGetStringIndirect(char* buffer, int size, HANDLE hp, LPVOID addr)
 224 {
 225     LPVOID      ad;
 226     DWORD       sz;
 227
 228     if (   addr
 229         && ReadProcessMemory(hp, addr, &ad, sizeof(ad), &sz)
 230         && sz == sizeof(ad)
 231         && ad
 232         && ReadProcessMemory(hp, ad, buffer, size, &sz))
 233         return TRUE;
 234     *(WCHAR*)buffer = 0;
 235     return FALSE;
 236 }
 237
 238 DBG_THREAD*     DEBUG_GetThread(DBG_PROCESS* p, DWORD tid)
 239 {
 240     DBG_THREAD* t;
 241
 242     if (!p) return NULL;
 243     for (t = p->threads; t; t = t->next)
 244         if (t->tid == tid) break;
 245     return t;
 246 }
 247
 248 DBG_THREAD*     DEBUG_AddThread(DBG_PROCESS* p, DWORD tid,
 249                                 HANDLE h, LPVOID start, LPVOID teb)
 250 {
 251     DBG_THREAD* t = DBG_alloc(sizeof(DBG_THREAD));
 252     if (!t)
 253         return NULL;
 254
 255     t->handle = h;
 256     t->tid = tid;
 257     t->start = start;
 258     t->teb = teb;
 259     t->process = p;
 260     t->wait_for_first_exception = 0;
 261     t->exec_mode = EXEC_CONT;
 262     t->exec_count = 0;
 263
 264     sprintf(t->name, "%08lx", tid);
 265
 266     p->num_threads++;
 267     t->next = p->threads;
 268     t->prev = NULL;
 269     if (p->threads) p->threads->prev = t;
 270     p->threads = t;
 271
 272     return t;
 273 }
 274
 275 static  void                    DEBUG_InitCurrThread(void)
 276 {
 277     if (DEBUG_CurrThread->start) {
 278         if (DEBUG_CurrThread->process->num_threads == 1 ||
 279             DBG_IVAR(BreakAllThreadsStartup)) {
 280             DBG_VALUE   value;
 281
 282             DEBUG_SetBreakpoints(FALSE);
 283             value.type = NULL;
 284             value.cookie = DV_TARGET;
 285             value.addr.seg = 0;
 286             value.addr.off = (DWORD)DEBUG_CurrThread->start;
 287             DEBUG_AddBreakpointFromValue(&value);
 288             DEBUG_SetBreakpoints(TRUE);
 289         }
 290     } else {
 291         DEBUG_CurrThread->wait_for_first_exception = 1;
 292     }
 293 }
 294
 295 void                    DEBUG_DelThread(DBG_THREAD* t)
 296 {
 297     if (t->prev) t->prev->next = t->next;
 298     if (t->next) t->next->prev = t->prev;
 299     if (t == t->process->threads) t->process->threads = t->next;
 300     t->process->num_threads--;
 301     if (t == DEBUG_CurrThread) DEBUG_CurrThread = NULL;
 302     DBG_free(t);
 303 }
 304
 305 BOOL                            DEBUG_Attach(DWORD pid, BOOL cofe)
 306 {
 307     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(pid, 0, NULL))) return FALSE;
 308
 309     if (!DebugActiveProcess(pid)) {
 310         DEBUG_Printf(DBG_CHN_MESG, "Can't attach process %lx: error %ld\n", pid, GetLastError());
 311         DEBUG_DelProcess(DEBUG_CurrProcess);
 312         DEBUG_CurrProcess = NULL;
 313         return FALSE;
 314     }
 315     DEBUG_CurrProcess->continue_on_first_exception = cofe;
 316     return TRUE;
 317 }
 318
 319 BOOL                            DEBUG_Detach(void)
 320 {
 321     /* remove all set breakpoints in debuggee code */
 322     DEBUG_SetBreakpoints(FALSE);
 323     /* needed for single stepping (ugly).
 324      * should this be handled inside the server ??? */
 325 #ifdef __i386__
 326     DEBUG_context.EFlags &= ~STEP_FLAG;
 327 #endif
 328     SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
 329     DebugActiveProcessStop(DEBUG_CurrProcess->pid);
 330     DEBUG_DelProcess(DEBUG_CurrProcess);
 331     DEBUG_CurrProcess = NULL;
 332     /* FIXME: should zero out the symbol table too */
 333     return TRUE;
 334 }
 335
 336 static  BOOL    DEBUG_ExceptionProlog(BOOL is_debug, BOOL force, DWORD code)
 337 {
 338     DBG_ADDR    addr;
 339     int         newmode;
 340
 341     DEBUG_GetCurrentAddress(&addr);
 342     DEBUG_SuspendExecution();
 343
 344     if (!is_debug)
 345     {
 346         if (!addr.seg)
 347             DEBUG_Printf(DBG_CHN_MESG, " in 32-bit code (0x%08lx)", addr.off);
 348         else
 349             switch(DEBUG_GetSelectorType(addr.seg))
 350             {
 351             case MODE_32:
 352                 DEBUG_Printf(DBG_CHN_MESG, " in 32-bit code (%04lx:%08lx)", addr.seg, addr.off);
 353                 break;
 354             case MODE_16:
 355                 DEBUG_Printf(DBG_CHN_MESG, " in 16-bit code (%04lx:%04lx)", addr.seg, addr.off);
 356                 break;
 357             case MODE_VM86:
 358                 DEBUG_Printf(DBG_CHN_MESG, " in vm86 code (%04lx:%04lx)", addr.seg, addr.off);
 359                 break;
 360             case MODE_INVALID:
 361                 DEBUG_Printf(DBG_CHN_MESG, " bad CS (%lx)", addr.seg);
 362                 break;
 363         }
 364         DEBUG_Printf(DBG_CHN_MESG, ".\n");
 365     }
 366
 367     DEBUG_LoadEntryPoints("Loading new modules symbols:\n");
 368
 369     if (!force && is_debug &&
 370         DEBUG_ShouldContinue(&addr, code,
 371                              &DEBUG_CurrThread->exec_count))
 372         return FALSE;
 373
 374     if ((newmode = DEBUG_GetSelectorType(addr.seg)) == MODE_INVALID) newmode = MODE_32;
 375     if (newmode != DEBUG_CurrThread->dbg_mode)
 376     {
 377         static const char * const names[] = { "???", "16-bit", "32-bit", "vm86" };
 378         DEBUG_Printf(DBG_CHN_MESG,"In %s mode.\n", names[newmode] );
 379         DEBUG_CurrThread->dbg_mode = newmode;
 380     }
 381
 382     DEBUG_DoDisplay();
 383
 384     if (is_debug || force) {
 385         /*
 386          * Do a quiet backtrace so that we have an idea of what the situation
 387          * is WRT the source files.
 388          */
 389         DEBUG_BackTrace(DEBUG_CurrTid, FALSE);
 390     } else {
 391         /* This is a real crash, dump some info */
 392         DEBUG_InfoRegisters(&DEBUG_context);
 393         DEBUG_InfoStack();
 394 #ifdef __i386__
 395         if (DEBUG_CurrThread->dbg_mode == MODE_16) {
 396             DEBUG_InfoSegments(DEBUG_context.SegDs >> 3, 1);
 397             if (DEBUG_context.SegEs != DEBUG_context.SegDs)
 398                 DEBUG_InfoSegments(DEBUG_context.SegEs >> 3, 1);
 399         }
 400         DEBUG_InfoSegments(DEBUG_context.SegFs >> 3, 1);
 401 #endif
 402         DEBUG_BackTrace(DEBUG_CurrTid, TRUE);
 403     }
 404
 405     if (!is_debug ||
 406         (DEBUG_CurrThread->exec_mode == EXEC_STEPI_OVER) ||
 407         (DEBUG_CurrThread->exec_mode == EXEC_STEPI_INSTR)) {
 408
 409         struct list_id list;
 410
 411         /* Show where we crashed */
 412         curr_frame = 0;
 413         DEBUG_DisassembleInstruction(&addr);
 414
 415         /* resets list internal arguments so we can look at source code when needed */
 416         DEBUG_FindNearestSymbol(&addr, TRUE, NULL, 0, &list);
 417         if (list.sourcefile) DEBUG_List(&list, NULL, 0);
 418     }
 419     return TRUE;
 420 }
 421
 422 static  void    DEBUG_ExceptionEpilog(void)
 423 {
 424     DEBUG_RestartExecution(DEBUG_CurrThread->exec_count);
 425     /*
 426      * This will have gotten absorbed into the breakpoint info
 427      * if it was used.  Otherwise it would have been ignored.
 428      * In any case, we don't mess with it any more.
 429      */
 430     if (DEBUG_CurrThread->exec_mode == EXEC_CONT)
 431         DEBUG_CurrThread->exec_count = 0;
 432 }
 433
 434 static  BOOL DEBUG_HandleException(EXCEPTION_RECORD *rec, BOOL first_chance, BOOL force)
 435 {
 436     BOOL             is_debug = FALSE;
 437     THREADNAME_INFO *pThreadName;
 438     DBG_THREAD      *pThread;
 439
 440     assert(DEBUG_CurrThread);
 441
 442     switch (rec->ExceptionCode)
 443     {
 444     case EXCEPTION_BREAKPOINT:
 445     case EXCEPTION_SINGLE_STEP:
 446         is_debug = TRUE;
 447         break;
 448     case EXCEPTION_NAME_THREAD:
 449         pThreadName = (THREADNAME_INFO*)(rec->ExceptionInformation);
 450         if (pThreadName->dwThreadID == -1)
 451             pThread = DEBUG_CurrThread;
 452         else
 453             pThread = DEBUG_GetThread(DEBUG_CurrProcess, pThreadName->dwThreadID);
 454
 455         if (ReadProcessMemory(DEBUG_CurrThread->process->handle, pThreadName->szName,
 456                               pThread->name, 9, NULL))
 457             DEBUG_Printf (DBG_CHN_MESG,
 458                           "Thread ID=0x%lx renamed using MS VC6 extension (name==\"%s\")\n",
 459                           pThread->tid, pThread->name);
 460         return FALSE;
 461     }
 462
 463     if (first_chance && !is_debug && !force && !DBG_IVAR(BreakOnFirstChance))
 464     {
 465         /* pass exception to program except for debug exceptions */
 466         return FALSE;
 467     }
 468
 469     if (!is_debug)
 470     {
 471         /* print some infos */
 472         DEBUG_Printf(DBG_CHN_MESG, "%s: ",
 473                       first_chance ? "First chance exception" : "Unhandled exception");
 474         switch (rec->ExceptionCode)
 475         {
 476         case EXCEPTION_INT_DIVIDE_BY_ZERO:
 477             DEBUG_Printf(DBG_CHN_MESG, "divide by zero");
 478             break;
 479         case EXCEPTION_INT_OVERFLOW:
 480             DEBUG_Printf(DBG_CHN_MESG, "overflow");
 481             break;
 482         case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 483             DEBUG_Printf(DBG_CHN_MESG, "array bounds ");
 484             break;
 485         case EXCEPTION_ILLEGAL_INSTRUCTION:
 486             DEBUG_Printf(DBG_CHN_MESG, "illegal instruction");
 487             break;
 488         case EXCEPTION_STACK_OVERFLOW:
 489             DEBUG_Printf(DBG_CHN_MESG, "stack overflow");
 490             break;
 491         case EXCEPTION_PRIV_INSTRUCTION:
 492             DEBUG_Printf(DBG_CHN_MESG, "privileged instruction");
 493             break;
 494         case EXCEPTION_ACCESS_VIOLATION:
 495             if (rec->NumberParameters == 2)
 496                 DEBUG_Printf(DBG_CHN_MESG, "page fault on %s access to 0x%08lx",
 497                               rec->ExceptionInformation[0] ? "write" : "read",
 498                               rec->ExceptionInformation[1]);
 499             else
 500                 DEBUG_Printf(DBG_CHN_MESG, "page fault");
 501             break;
 502         case EXCEPTION_DATATYPE_MISALIGNMENT:
 503             DEBUG_Printf(DBG_CHN_MESG, "Alignment");
 504             break;
 505         case DBG_CONTROL_C:
 506             DEBUG_Printf(DBG_CHN_MESG, "^C");
 507             break;
 508         case CONTROL_C_EXIT:
 509             DEBUG_Printf(DBG_CHN_MESG, "^C");
 510             break;
 511         case EXCEPTION_CRITICAL_SECTION_WAIT:
 512             {
 513                 DBG_ADDR        addr;
 514
 515                 addr.seg = 0;
 516                 addr.off = rec->ExceptionInformation[0];
 517
 518                 DEBUG_Printf(DBG_CHN_MESG, "wait failed on critical section ");
 519                 DEBUG_PrintAddress(&addr, DEBUG_CurrThread->dbg_mode, FALSE);
 520             }
 521             if (!DBG_IVAR(BreakOnCritSectTimeOut))
 522             {
 523                 DEBUG_Printf(DBG_CHN_MESG, "\n");
 524                 return FALSE;
 525             }
 526             break;
 527         case EXCEPTION_WINE_STUB:
 528             {
 529                 char dll[32], name[64];
 530                 DEBUG_ProcessGetString( dll, sizeof(dll), DEBUG_CurrThread->process->handle,
 531                                         (char *)rec->ExceptionInformation[0] );
 532                 DEBUG_ProcessGetString( name, sizeof(name), DEBUG_CurrThread->process->handle,
 533                                         (char *)rec->ExceptionInformation[1] );
 534                 DEBUG_Printf(DBG_CHN_MESG, "unimplemented function %s.%s called", dll, name );
 535             }
 536             break;
 537         case EXCEPTION_VM86_INTx:
 538             DEBUG_Printf(DBG_CHN_MESG, "interrupt %02lx in vm86 mode",
 539                          rec->ExceptionInformation[0]);
 540             break;
 541         case EXCEPTION_VM86_STI:
 542             DEBUG_Printf(DBG_CHN_MESG, "sti in vm86 mode");
 543             break;
 544         case EXCEPTION_VM86_PICRETURN:
 545             DEBUG_Printf(DBG_CHN_MESG, "PIC return in vm86 mode");
 546             break;
 547         default:
 548             DEBUG_Printf(DBG_CHN_MESG, "%08lx", rec->ExceptionCode);
 549             break;
 550         }
 551     }
 552
 553     if (local_mode == automatic_mode)
 554     {
 555         DEBUG_ExceptionProlog(is_debug, FALSE, rec->ExceptionCode);
 556         DEBUG_ExceptionEpilog();
 557         return TRUE;  /* terminate execution */
 558     }
 559
 560     if (DEBUG_ExceptionProlog(is_debug, force, rec->ExceptionCode))
 561     {
 562         DEBUG_InteractiveP = TRUE;
 563         return TRUE;
 564     }
 565     DEBUG_ExceptionEpilog();
 566
 567     return FALSE;
 568 }
 569
 570 static  BOOL    DEBUG_HandleDebugEvent(DEBUG_EVENT* de)
 571 {
 572     char                buffer[256];
 573     BOOL                ret = FALSE;
 574
 575     DEBUG_CurrPid = de->dwProcessId;
 576     DEBUG_CurrTid = de->dwThreadId;
 577
 578     if ((DEBUG_CurrProcess = DEBUG_GetProcess(de->dwProcessId)) != NULL)
 579         DEBUG_CurrThread = DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId);
 580     else
 581         DEBUG_CurrThread = NULL;
 582
 583     switch (de->dwDebugEventCode)
 584     {
 585     case EXCEPTION_DEBUG_EVENT:
 586         if (!DEBUG_CurrThread)
 587         {
 588             DEBUG_Printf(DBG_CHN_ERR, "%08lx:%08lx: not a registered process or thread (perhaps a 16 bit one ?)\n",
 589                          de->dwProcessId, de->dwThreadId);
 590             break;
 591         }
 592
 593         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exception code=%08lx\n",
 594                      de->dwProcessId, de->dwThreadId,
 595                      de->u.Exception.ExceptionRecord.ExceptionCode);
 596
 597         if (DEBUG_CurrProcess->continue_on_first_exception)
 598         {
 599             DEBUG_CurrProcess->continue_on_first_exception = FALSE;
 600             if (!DBG_IVAR(BreakOnAttach)) break;
 601         }
 602
 603         DEBUG_context.ContextFlags =  CONTEXT_CONTROL
 604                                     | CONTEXT_INTEGER
 605 #ifdef CONTEXT_SEGMENTS
 606                                     | CONTEXT_SEGMENTS
 607 #endif
 608 #ifdef CONTEXT_DEBUG_REGISTERS
 609                                     | CONTEXT_DEBUG_REGISTERS
 610 #endif
 611                                     ;
 612
 613         if (!GetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context))
 614         {
 615             DEBUG_Printf(DBG_CHN_WARN, "Can't get thread's context\n");
 616             break;
 617         }
 618
 619         ret = DEBUG_HandleException(&de->u.Exception.ExceptionRecord,
 620                                     de->u.Exception.dwFirstChance,
 621                                     DEBUG_CurrThread->wait_for_first_exception);
 622         if (DEBUG_CurrThread)
 623         {
 624             DEBUG_CurrThread->wait_for_first_exception = 0;
 625             SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context);
 626         }
 627         break;
 628
 629     case CREATE_THREAD_DEBUG_EVENT:
 630         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread D @%08lx\n", de->dwProcessId, de->dwThreadId,
 631                      (unsigned long)(LPVOID)de->u.CreateThread.lpStartAddress);
 632
 633         if (DEBUG_CurrProcess == NULL)
 634         {
 635             DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 636             break;
 637         }
 638         if (DEBUG_GetThread(DEBUG_CurrProcess, de->dwThreadId) != NULL)
 639         {
 640             DEBUG_Printf(DBG_CHN_TRACE, "Thread already listed, skipping\n");
 641             break;
 642         }
 643
 644         DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 645                                            de->dwThreadId,
 646                                            de->u.CreateThread.hThread,
 647                                            de->u.CreateThread.lpStartAddress,
 648                                            de->u.CreateThread.lpThreadLocalBase);
 649         if (!DEBUG_CurrThread)
 650         {
 651             DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 652             break;
 653         }
 654         DEBUG_InitCurrThread();
 655         break;
 656
 657     case CREATE_PROCESS_DEBUG_EVENT:
 658         DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 659                                        de->u.CreateProcessInfo.hProcess,
 660                                        de->u.CreateProcessInfo.lpImageName);
 661
 662         /* FIXME unicode ? de->u.CreateProcessInfo.fUnicode */
 663         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create process '%s'/%p @%08lx (%ld<%ld>)\n",
 664                      de->dwProcessId, de->dwThreadId,
 665                      buffer, de->u.CreateProcessInfo.lpImageName,
 666                      (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress,
 667                      de->u.CreateProcessInfo.dwDebugInfoFileOffset,
 668                      de->u.CreateProcessInfo.nDebugInfoSize);
 669
 670         DEBUG_CurrProcess = DEBUG_AddProcess(de->dwProcessId,
 671                                              de->u.CreateProcessInfo.hProcess,
 672                                              buffer[0] ? buffer : "<Debugged Process>");
 673         if (DEBUG_CurrProcess == NULL)
 674         {
 675             DEBUG_Printf(DBG_CHN_ERR, "Couldn't create process\n");
 676             break;
 677         }
 678
 679         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: create thread I @%08lx\n",
 680                      de->dwProcessId, de->dwThreadId,
 681                      (unsigned long)(LPVOID)de->u.CreateProcessInfo.lpStartAddress);
 682
 683         DEBUG_CurrThread = DEBUG_AddThread(DEBUG_CurrProcess,
 684                                            de->dwThreadId,
 685                                            de->u.CreateProcessInfo.hThread,
 686                                            de->u.CreateProcessInfo.lpStartAddress,
 687                                            de->u.CreateProcessInfo.lpThreadLocalBase);
 688         if (!DEBUG_CurrThread)
 689         {
 690             DEBUG_Printf(DBG_CHN_ERR, "Couldn't create thread\n");
 691             break;
 692         }
 693
 694         DEBUG_InitCurrProcess();
 695         DEBUG_InitCurrThread();
 696
 697         /* module is either PE, NE or ELF module (for WineLib), but all
 698          * are loaded with wine, so load its symbols, then the main module
 699          */
 700         do
 701         {
 702             char*   ptr = getenv("WINELOADER");
 703
 704             if (!ptr || DEBUG_ReadExecutableDbgInfo( ptr ) == DIL_ERROR)
 705                 DEBUG_ReadExecutableDbgInfo( "wine" );
 706         } while (0);
 707
 708         DEBUG_LoadModule32(DEBUG_CurrProcess->imageName, de->u.CreateProcessInfo.hFile,
 709                            (DWORD)de->u.CreateProcessInfo.lpBaseOfImage);
 710
 711         break;
 712
 713     case EXIT_THREAD_DEBUG_EVENT:
 714         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit thread (%ld)\n",
 715                      de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
 716
 717         if (DEBUG_CurrThread == NULL)
 718         {
 719             DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 720             break;
 721         }
 722         /* FIXME: remove break point set on thread startup */
 723         DEBUG_DelThread(DEBUG_CurrThread);
 724         break;
 725
 726     case EXIT_PROCESS_DEBUG_EVENT:
 727         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: exit process (%ld)\n",
 728                      de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
 729
 730         if (DEBUG_CurrProcess == NULL)
 731         {
 732             DEBUG_Printf(DBG_CHN_ERR, "Unknown process\n");
 733             break;
 734         }
 735         /* just in case */
 736         DEBUG_SetBreakpoints(FALSE);
 737         /* kill last thread */
 738         DEBUG_DelThread(DEBUG_CurrProcess->threads);
 739         DEBUG_DelProcess(DEBUG_CurrProcess);
 740
 741         DEBUG_Printf(DBG_CHN_MESG, "Process of pid=%08lx has terminated\n", DEBUG_CurrPid);
 742         break;
 743
 744     case LOAD_DLL_DEBUG_EVENT:
 745         if (DEBUG_CurrThread == NULL)
 746         {
 747             DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 748             break;
 749         }
 750         DEBUG_ProcessGetStringIndirect(buffer, sizeof(buffer),
 751                                        DEBUG_CurrThread->process->handle,
 752                                        de->u.LoadDll.lpImageName);
 753
 754         /* FIXME unicode: de->u.LoadDll.fUnicode */
 755         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: loads DLL %s @%08lx (%ld<%ld>)\n",
 756                      de->dwProcessId, de->dwThreadId,
 757                      buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll,
 758                      de->u.LoadDll.dwDebugInfoFileOffset,
 759                      de->u.LoadDll.nDebugInfoSize);
 760         _strupr(buffer);
 761         DEBUG_LoadModule32(buffer, de->u.LoadDll.hFile, (DWORD)de->u.LoadDll.lpBaseOfDll);
 762         DEBUG_CheckDelayedBP();
 763         if (DBG_IVAR(BreakOnDllLoad))
 764         {
 765             DEBUG_Printf(DBG_CHN_MESG, "Stopping on DLL %s loading at %08lx\n",
 766                          buffer, (unsigned long)de->u.LoadDll.lpBaseOfDll);
 767             ret = TRUE;
 768         }
 769         break;
 770
 771     case UNLOAD_DLL_DEBUG_EVENT:
 772         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unload DLL @%08lx\n", de->dwProcessId, de->dwThreadId,
 773                      (unsigned long)de->u.UnloadDll.lpBaseOfDll);
 774         break;
 775
 776     case OUTPUT_DEBUG_STRING_EVENT:
 777         if (DEBUG_CurrThread == NULL)
 778         {
 779             DEBUG_Printf(DBG_CHN_ERR, "Unknown thread\n");
 780             break;
 781         }
 782
 783         DEBUG_ProcessGetString(buffer, sizeof(buffer),
 784                                DEBUG_CurrThread->process->handle,
 785                                de->u.DebugString.lpDebugStringData);
 786
 787         /* FIXME unicode de->u.DebugString.fUnicode ? */
 788         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: output debug string (%s)\n",
 789                      de->dwProcessId, de->dwThreadId, buffer);
 790         break;
 791
 792     case RIP_EVENT:
 793         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: rip error=%ld type=%ld\n",
 794                      de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
 795                      de->u.RipInfo.dwType);
 796         break;
 797
 798     default:
 799         DEBUG_Printf(DBG_CHN_TRACE, "%08lx:%08lx: unknown event (%ld)\n",
 800                      de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
 801     }
 802
 803     return ret;
 804 }
 805
 806 static void                     DEBUG_ResumeDebuggee(DWORD cont)
 807 {
 808     DEBUG_ExceptionEpilog();
 809 #if 1
 810     DEBUG_Printf(DBG_CHN_TRACE,
 811                  "Exiting debugger      PC=%lx EFL=%08lx mode=%d count=%d\n",
 812 #ifdef __i386__
 813                  DEBUG_context.Eip, DEBUG_context.EFlags,
 814 #else
 815                  0L, 0L,
 816 #endif
 817                  DEBUG_CurrThread->exec_mode, DEBUG_CurrThread->exec_count);
 818 #endif
 819     DEBUG_InteractiveP = FALSE;
 820     if (DEBUG_CurrThread)
 821     {
 822         if (!SetThreadContext(DEBUG_CurrThread->handle, &DEBUG_context))
 823             DEBUG_Printf(DBG_CHN_MESG, "Cannot set ctx on %lu\n", DEBUG_CurrTid);
 824         DEBUG_CurrThread->wait_for_first_exception = 0;
 825     }
 826     if (!ContinueDebugEvent(DEBUG_CurrPid, DEBUG_CurrTid, cont))
 827         DEBUG_Printf(DBG_CHN_MESG, "Cannot continue on %lu (%lu)\n",
 828                      DEBUG_CurrTid, cont);
 829 }
 830
 831 void                            DEBUG_WaitNextException(DWORD cont, int count, int mode)
 832 {
 833     DEBUG_EVENT         de;
 834
 835     if (cont == DBG_CONTINUE)
 836     {
 837         DEBUG_CurrThread->exec_count = count;
 838         DEBUG_CurrThread->exec_mode = mode;
 839     }
 840     DEBUG_ResumeDebuggee(cont);
 841
 842     while (DEBUG_CurrProcess && WaitForDebugEvent(&de, INFINITE))
 843     {
 844         if (DEBUG_HandleDebugEvent(&de)) break;
 845         ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
 846     }
 847     if (!DEBUG_CurrProcess) return;
 848     DEBUG_InteractiveP = TRUE;
 849 #if 1
 850     DEBUG_Printf(DBG_CHN_TRACE,
 851                  "Entering debugger     PC=%lx EFL=%08lx mode=%d count=%d\n",
 852 #ifdef __i386__
 853                  DEBUG_context.Eip, DEBUG_context.EFlags,
 854 #else
 855                  0L, 0L,
 856 #endif
 857                  DEBUG_CurrThread->exec_mode, DEBUG_CurrThread->exec_count);
 858 #endif
 859 }
 860
 861 static  DWORD   DEBUG_MainLoop(void)
 862 {
 863     DEBUG_EVENT         de;
 864
 865     DEBUG_Printf(DBG_CHN_MESG, "WineDbg starting on pid %lx\n", DEBUG_CurrPid);
 866
 867     /* wait for first exception */
 868     while (WaitForDebugEvent(&de, INFINITE))
 869     {
 870         if (DEBUG_HandleDebugEvent(&de)) break;
 871         ContinueDebugEvent(de.dwProcessId, de.dwThreadId, DBG_CONTINUE);
 872     }
 873     if (local_mode == automatic_mode)
 874     {
 875         /* print some extra information */
 876         DEBUG_Printf(DBG_CHN_MESG, "Modules:\n");
 877         DEBUG_WalkModules();
 878         DEBUG_Printf(DBG_CHN_MESG, "Threads:\n");
 879         DEBUG_WalkThreads();
 880     }
 881     else
 882     {
 883         DEBUG_InteractiveP = TRUE;
 884         DEBUG_Parser(NULL);
 885     }
 886     DEBUG_Printf(DBG_CHN_MESG, "WineDbg terminated on pid %lx\n", DEBUG_CurrPid);
 887
 888     return 0;
 889 }
 890
 891 static  BOOL    DEBUG_Start(LPSTR cmdLine)
 892 {
 893     PROCESS_INFORMATION info;
 894     STARTUPINFOA        startup;
 895
 896     memset(&startup, 0, sizeof(startup));
 897     startup.cb = sizeof(startup);
 898     startup.dwFlags = STARTF_USESHOWWINDOW;
 899     startup.wShowWindow = SW_SHOWNORMAL;
 900
 901     /* FIXME: shouldn't need the CREATE_NEW_CONSOLE, but as usual CUI:s need it
 902      * while GUI:s don't
 903      */
 904     if (!CreateProcess(NULL, cmdLine, NULL, NULL,
 905                        FALSE, DEBUG_PROCESS|DEBUG_ONLY_THIS_PROCESS|CREATE_NEW_CONSOLE,
 906                        NULL, NULL, &startup, &info))
 907     {
 908         DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
 909         return FALSE;
 910     }
 911     DEBUG_CurrPid = info.dwProcessId;
 912     if (!(DEBUG_CurrProcess = DEBUG_AddProcess(DEBUG_CurrPid, 0, NULL))) return FALSE;
 913
 914     return TRUE;
 915 }
 916
 917 void    DEBUG_Run(const char* args)
 918 {
 919     DBG_MODULE* wmod = DEBUG_GetProcessMainModule(DEBUG_CurrProcess);
 920     const char* pgm = (wmod) ? wmod->module_name : "none";
 921
 922     if (args) {
 923         DEBUG_Printf(DBG_CHN_MESG, "Run (%s) with '%s'\n", pgm, args);
 924     } else {
 925         if (!DEBUG_LastCmdLine) {
 926             DEBUG_Printf(DBG_CHN_MESG, "Cannot find previously used command line.\n");
 927             return;
 928         }
 929         DEBUG_Start(DEBUG_LastCmdLine);
 930     }
 931 }
 932
 933 static BOOL WINAPI DEBUG_CtrlCHandler(DWORD dwCtrlType)
 934 {
 935     if (dwCtrlType == CTRL_C_EVENT)
 936     {
 937         DEBUG_Printf(DBG_CHN_MESG, "Ctrl-C: stopping debuggee\n");
 938         /* FIXME: since we likely have a single process, signal the first process
 939          * in list
 940          */
 941         return DEBUG_ProcessList && DebugBreakProcess(DEBUG_ProcessList->handle);
 942     }
 943     return FALSE;
 944 }
 945
 946 static void DEBUG_InitConsole(void)
 947 {
 948     COORD       c;
 949     SMALL_RECT  sr;
 950     DWORD       mode;
 951
 952     /* keep it as a cuiexe for now, so that Wine won't touch the Unix stdin,
 953      * stdout and stderr streams
 954      */
 955     if (DBG_IVAR(UseXTerm))
 956     {
 957         FreeConsole();
 958         AllocConsole();
 959     }
 960
 961     /* this would be nicer for output */
 962     c.X = 132;
 963     c.Y = 500;
 964     SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), c);
 965
 966     /* sets the console's window width accordingly */
 967     sr.Left   = 0;
 968     sr.Top    = 0;
 969     sr.Right  = c.X - 1;
 970     sr.Bottom = 50;
 971     SetConsoleWindowInfo(GetStdHandle(STD_OUTPUT_HANDLE), TRUE, &sr);
 972
 973     /* put the line editing mode with the nice emacs features (FIXME: could be triggered by a IVAR) */
 974     if (GetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), &mode))
 975         SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), mode | WINE_ENABLE_LINE_INPUT_EMACS);
 976
 977     /* set our control-C handler */
 978     SetConsoleCtrlHandler(DEBUG_CtrlCHandler, TRUE);
 979 }
 980
 981 static int DEBUG_Usage(void)
 982 {
 983     DEBUG_Printf(DBG_CHN_MESG, "Usage: winedbg [--debugmsg dbgoptions] [--auto] [--gdb] cmdline\n" );
 984     return 1;
 985 }
 986
 987 int main(int argc, char** argv)
 988 {
 989     DWORD       retv = 0;
 990     unsigned    gdb_flags = 0;
 991
 992     /* Initialize the type handling stuff. */
 993     DEBUG_InitTypes();
 994     DEBUG_InitCVDataTypes();
 995
 996     /* Initialize internal vars (types must have been initialized before) */
 997     if (!DEBUG_IntVarsRW(TRUE)) return -1;
 998
 999     /* parse options */
1000     while (argc > 1 && argv[1][0] == '-')
1001     {
1002         if (!strcmp( argv[1], "--auto" ))
1003         {
1004             if (local_mode != none_mode) return DEBUG_Usage();
1005             local_mode = automatic_mode;
1006             /* force some internal variables */
1007             DBG_IVAR(UseXTerm) = 0;
1008             DBG_IVAR(BreakOnDllLoad) = 0;
1009             DBG_IVAR(ConChannelMask) = 0;
1010             DBG_IVAR(StdChannelMask) = DBG_CHN_MESG;
1011             argc--; argv++;
1012             continue;
1013         }
1014         if (!strcmp( argv[1], "--gdb" ))
1015         {
1016             if (local_mode != none_mode) return DEBUG_Usage();
1017             local_mode = gdb_mode;
1018             argc--; argv++;
1019             continue;
1020         }
1021         if (strcmp( argv[1], "--no-start") == 0 && local_mode == gdb_mode)
1022         {
1023             gdb_flags |= 1;
1024             argc--; argv++; /* as we don't use argv[0] */
1025             continue;
1026         }
1027         if (strcmp(argv[1], "--with-xterm") == 0 && local_mode == gdb_mode)
1028         {
1029             gdb_flags |= 2;
1030             argc--; argv++; /* as we don't use argv[0] */
1031             continue;
1032         }
1033         if (!strcmp( argv[1], "--debugmsg" ) && argv[2])
1034         {
1035             wine_dbg_parse_options( argv[2] );
1036             argc -= 2;
1037             argv += 2;
1038             continue;
1039         }
1040         return DEBUG_Usage();
1041     }
1042
1043     if (local_mode == none_mode) local_mode = winedbg_mode;
1044
1045     /* try the from <myself> pid */
1046     if (DEBUG_CurrPid == 0 && argc == 2)
1047     {
1048         char*   ptr;
1049
1050         DEBUG_CurrPid = strtol(argv[1], &ptr, 10);
1051         if (DEBUG_CurrPid == 0 || ptr == NULL ||
1052             !DEBUG_Attach(DEBUG_CurrPid, local_mode != gdb_mode))
1053             DEBUG_CurrPid = 0;
1054     }
1055
1056     /* try the from <myself> pid evt (Win32 JIT debugger) */
1057     if (DEBUG_CurrPid == 0 && argc == 3)
1058     {
1059         HANDLE  hEvent;
1060         DWORD   pid;
1061         char*   ptr;
1062
1063         if ((pid = strtol(argv[1], &ptr, 10)) != 0 && ptr != NULL &&
1064             (hEvent = (HANDLE)strtol(argv[2], &ptr, 10)) != 0 && ptr != NULL)
1065         {
1066             if (!DEBUG_Attach(pid, TRUE))
1067             {
1068                 /* don't care about result */
1069                 SetEvent(hEvent);
1070                 goto leave;
1071             }
1072             if (!SetEvent(hEvent))
1073             {
1074                 DEBUG_Printf(DBG_CHN_ERR, "Invalid event handle: %p\n", hEvent);
1075                 goto leave;
1076             }
1077             CloseHandle(hEvent);
1078             DEBUG_CurrPid = pid;
1079         }
1080     }
1081
1082     if (DEBUG_CurrPid == 0 && argc > 1)
1083     {
1084         int     i, len;
1085         LPSTR   cmdLine;
1086
1087         if (!(cmdLine = DBG_alloc(len = 1))) goto oom_leave;
1088         cmdLine[0] = '\0';
1089
1090         for (i = 1; i < argc; i++)
1091         {
1092             len += strlen(argv[i]) + 1;
1093             if (!(cmdLine = DBG_realloc(cmdLine, len))) goto oom_leave;
1094             strcat(cmdLine, argv[i]);
1095             cmdLine[len - 2] = ' ';
1096             cmdLine[len - 1] = '\0';
1097         }
1098
1099         if (!DEBUG_Start(cmdLine))
1100         {
1101             DEBUG_Printf(DBG_CHN_MESG, "Couldn't start process '%s'\n", cmdLine);
1102             goto leave;
1103         }
1104         DBG_free(DEBUG_LastCmdLine);
1105         DEBUG_LastCmdLine = cmdLine;
1106     }
1107     /* don't save local vars in gdb mode */
1108     if (local_mode == gdb_mode && DEBUG_CurrPid)
1109         return DEBUG_GdbRemote(gdb_flags);
1110
1111     DEBUG_InitConsole();
1112
1113     retv = DEBUG_MainLoop();
1114     /* don't save modified variables in auto mode */
1115     if (local_mode != automatic_mode) DEBUG_IntVarsRW(FALSE);
1116
1117  leave:
1118     return retv;
1119
1120  oom_leave:
1121     DEBUG_Printf(DBG_CHN_MESG, "Out of memory\n");
1122     goto leave;
1123 }