git.oblomov.eu Git - wine/blob - programs/winedbg/tgt_active.c

   1 /*
   2  * Wine debugger - back-end for an active target
   3  *
   4  * Copyright 2000-2006 Eric Pouech
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <stdarg.h>
  27
  28 #include "debugger.h"
  29 #include "psapi.h"
  30 #include "resource.h"
  31 #include "winternl.h"
  32 #include "wine/debug.h"
  33 #include "wine/exception.h"
  34 #include "wine/unicode.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
  37
  38 static char*            dbg_last_cmd_line;
  39 static struct be_process_io be_process_active_io;
  40
  41 static void dbg_init_current_process(void)
  42 {
  43 }
  44
  45 static void dbg_init_current_thread(void* start)
  46 {
  47     if (start)
  48     {
  49         if (dbg_curr_process->threads &&
  50             !dbg_curr_process->threads->next && /* first thread ? */
  51             DBG_IVAR(BreakAllThreadsStartup))
  52         {
  53             ADDRESS64   addr;
  54
  55             break_set_xpoints(FALSE);
  56             addr.Mode   = AddrModeFlat;
  57             addr.Offset = (DWORD_PTR)start;
  58             break_add_break(&addr, TRUE, TRUE);
  59             break_set_xpoints(TRUE);
  60         }
  61     }
  62 }
  63
  64 static unsigned dbg_handle_debug_event(DEBUG_EVENT* de);
  65
  66 /******************************************************************
  67  *              dbg_attach_debuggee
  68  *
  69  * Sets the debuggee to <pid>
  70  * cofe instructs winedbg what to do when first exception is received
  71  * (break=FALSE, continue=TRUE)
  72  * wfe is set to TRUE if dbg_attach_debuggee should also proceed with all debug events
  73  * until the first exception is received (aka: attach to an already running process)
  74  */
  75 BOOL dbg_attach_debuggee(DWORD pid, BOOL cofe)
  76 {
  77     if (!(dbg_curr_process = dbg_add_process(&be_process_active_io, pid, 0))) return FALSE;
  78
  79     if (!DebugActiveProcess(pid))
  80     {
  81         dbg_printf("Can't attach process %04x: error %u\n", pid, GetLastError());
  82         dbg_del_process(dbg_curr_process);
  83         return FALSE;
  84     }
  85     dbg_curr_process->continue_on_first_exception = cofe;
  86
  87     SetEnvironmentVariableA("DBGHELP_NOLIVE", NULL);
  88
  89     dbg_curr_process->active_debuggee = TRUE;
  90     return TRUE;
  91 }
  92
  93 static unsigned dbg_fetch_context(void)
  94 {
  95     dbg_context.ContextFlags = CONTEXT_CONTROL
  96         | CONTEXT_INTEGER | CONTEXT_FLOATING_POINT
  97 #ifdef CONTEXT_SEGMENTS
  98         | CONTEXT_SEGMENTS
  99 #endif
 100 #ifdef CONTEXT_DEBUG_REGISTERS
 101         | CONTEXT_DEBUG_REGISTERS
 102 #endif
 103         ;
 104     if (!GetThreadContext(dbg_curr_thread->handle, &dbg_context))
 105     {
 106         WINE_WARN("Can't get thread's context\n");
 107         return FALSE;
 108     }
 109     return TRUE;
 110 }
 111
 112 /***********************************************************************
 113  *              dbg_exception_prolog
 114  *
 115  * Examine exception and decide if interactive mode is entered(return TRUE)
 116  * or exception is silently continued(return FALSE)
 117  * is_debug means the exception is a breakpoint or single step exception
 118  */
 119 static unsigned dbg_exception_prolog(BOOL is_debug, BOOL first_chance, const EXCEPTION_RECORD* rec)
 120 {
 121     ADDRESS64   addr;
 122     BOOL        is_break;
 123     char        hexbuf[MAX_OFFSET_TO_STR_LEN];
 124
 125     memory_get_current_pc(&addr);
 126     break_suspend_execution();
 127     dbg_curr_thread->excpt_record = *rec;
 128     dbg_curr_thread->in_exception = TRUE;
 129
 130     if (!is_debug)
 131     {
 132         switch (addr.Mode)
 133         {
 134         case AddrModeFlat:
 135             dbg_printf(" in 32-bit code (%s)",
 136                        memory_offset_to_string(hexbuf, addr.Offset, 0));
 137             break;
 138         case AddrModeReal:
 139             dbg_printf(" in vm86 code (%04x:%04x)", addr.Segment, (unsigned) addr.Offset);
 140             break;
 141         case AddrMode1616:
 142             dbg_printf(" in 16-bit code (%04x:%04x)", addr.Segment, (unsigned) addr.Offset);
 143             break;
 144         case AddrMode1632:
 145             dbg_printf(" in 32-bit code (%04x:%08lx)", addr.Segment, (unsigned long) addr.Offset);
 146             break;
 147         default: dbg_printf(" bad address");
 148         }
 149         dbg_printf(".\n");
 150     }
 151
 152     /* this will resynchronize builtin dbghelp's internal ELF module list */
 153     SymLoadModule(dbg_curr_process->handle, 0, 0, 0, 0, 0);
 154
 155     if (is_debug) break_adjust_pc(&addr, rec->ExceptionCode, first_chance, &is_break);
 156     /*
 157      * Do a quiet backtrace so that we have an idea of what the situation
 158      * is WRT the source files.
 159      */
 160     stack_fetch_frames(&dbg_context);
 161
 162     if (is_debug && !is_break && break_should_continue(&addr, rec->ExceptionCode))
 163         return FALSE;
 164
 165     if (addr.Mode != dbg_curr_thread->addr_mode)
 166     {
 167         const char* name = NULL;
 168
 169         switch (addr.Mode)
 170         {
 171         case AddrMode1616: name = "16 bit";     break;
 172         case AddrMode1632: name = "32 bit";     break;
 173         case AddrModeReal: name = "vm86";       break;
 174         case AddrModeFlat: name = "32 bit";     break;
 175         }
 176
 177         dbg_printf("In %s mode.\n", name);
 178         dbg_curr_thread->addr_mode = addr.Mode;
 179     }
 180     display_print();
 181
 182     if (!is_debug)
 183     {
 184         /* This is a real crash, dump some info */
 185         be_cpu->print_context(dbg_curr_thread->handle, &dbg_context, 0);
 186         stack_info();
 187         be_cpu->print_segment_info(dbg_curr_thread->handle, &dbg_context);
 188         stack_backtrace(dbg_curr_tid);
 189     }
 190     else
 191     {
 192         static char*        last_name;
 193         static char*        last_file;
 194
 195         char                buffer[sizeof(SYMBOL_INFO) + 256];
 196         SYMBOL_INFO*        si = (SYMBOL_INFO*)buffer;
 197         void*               lin = memory_to_linear_addr(&addr);
 198         DWORD64             disp64;
 199         IMAGEHLP_LINE64     il;
 200         DWORD               disp;
 201
 202         si->SizeOfStruct = sizeof(*si);
 203         si->MaxNameLen   = 256;
 204         il.SizeOfStruct = sizeof(il);
 205         if (SymFromAddr(dbg_curr_process->handle, (DWORD_PTR)lin, &disp64, si) &&
 206             SymGetLineFromAddr64(dbg_curr_process->handle, (DWORD_PTR)lin, &disp, &il))
 207         {
 208             if ((!last_name || strcmp(last_name, si->Name)) ||
 209                 (!last_file || strcmp(last_file, il.FileName)))
 210             {
 211                 HeapFree(GetProcessHeap(), 0, last_name);
 212                 HeapFree(GetProcessHeap(), 0, last_file);
 213                 last_name = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(si->Name) + 1), si->Name);
 214                 last_file = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(il.FileName) + 1), il.FileName);
 215                 dbg_printf("%s () at %s:%u\n", last_name, last_file, il.LineNumber);
 216             }
 217         }
 218     }
 219     if (!is_debug || is_break ||
 220         dbg_curr_thread->exec_mode == dbg_exec_step_over_insn ||
 221         dbg_curr_thread->exec_mode == dbg_exec_step_into_insn)
 222     {
 223         ADDRESS64 tmp = addr;
 224         /* Show where we crashed */
 225         memory_disasm_one_insn(&tmp);
 226     }
 227     source_list_from_addr(&addr, 0);
 228
 229     return TRUE;
 230 }
 231
 232 static void dbg_exception_epilog(void)
 233 {
 234     break_restart_execution(dbg_curr_thread->exec_count);
 235     /*
 236      * This will have gotten absorbed into the breakpoint info
 237      * if it was used.  Otherwise it would have been ignored.
 238      * In any case, we don't mess with it any more.
 239      */
 240     if (dbg_curr_thread->exec_mode == dbg_exec_cont)
 241         dbg_curr_thread->exec_count = 0;
 242     dbg_curr_thread->in_exception = FALSE;
 243 }
 244
 245 static DWORD dbg_handle_exception(const EXCEPTION_RECORD* rec, BOOL first_chance)
 246 {
 247     BOOL                is_debug = FALSE;
 248     const THREADNAME_INFO*    pThreadName;
 249     struct dbg_thread*  pThread;
 250
 251     assert(dbg_curr_thread);
 252
 253     WINE_TRACE("exception=%x first_chance=%c\n",
 254                rec->ExceptionCode, first_chance ? 'Y' : 'N');
 255
 256     switch (rec->ExceptionCode)
 257     {
 258     case EXCEPTION_BREAKPOINT:
 259     case EXCEPTION_SINGLE_STEP:
 260         is_debug = TRUE;
 261         break;
 262     case EXCEPTION_NAME_THREAD:
 263         pThreadName = (const THREADNAME_INFO*)(rec->ExceptionInformation);
 264         if (pThreadName->dwThreadID == -1)
 265             pThread = dbg_curr_thread;
 266         else
 267             pThread = dbg_get_thread(dbg_curr_process, pThreadName->dwThreadID);
 268         if(!pThread)
 269         {
 270             dbg_printf("Thread ID=%04x not in our list of threads -> can't rename\n", pThreadName->dwThreadID);
 271             return DBG_CONTINUE;
 272         }
 273         if (dbg_read_memory(pThreadName->szName, pThread->name, 9))
 274             dbg_printf("Thread ID=%04x renamed using MS VC6 extension (name==\"%.9s\")\n",
 275                        pThread->tid, pThread->name);
 276         return DBG_CONTINUE;
 277     }
 278
 279     if (first_chance && !is_debug && !DBG_IVAR(BreakOnFirstChance) &&
 280         !(rec->ExceptionFlags & EH_STACK_INVALID))
 281     {
 282         /* pass exception to program except for debug exceptions */
 283         return DBG_EXCEPTION_NOT_HANDLED;
 284     }
 285
 286     if (!is_debug)
 287     {
 288         /* print some infos */
 289         dbg_printf("%s: ",
 290                    first_chance ? "First chance exception" : "Unhandled exception");
 291         switch (rec->ExceptionCode)
 292         {
 293         case EXCEPTION_INT_DIVIDE_BY_ZERO:
 294             dbg_printf("divide by zero");
 295             break;
 296         case EXCEPTION_INT_OVERFLOW:
 297             dbg_printf("overflow");
 298             break;
 299         case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 300             dbg_printf("array bounds");
 301             break;
 302         case EXCEPTION_ILLEGAL_INSTRUCTION:
 303             dbg_printf("illegal instruction");
 304             break;
 305         case EXCEPTION_STACK_OVERFLOW:
 306             dbg_printf("stack overflow");
 307             break;
 308         case EXCEPTION_PRIV_INSTRUCTION:
 309             dbg_printf("privileged instruction");
 310             break;
 311         case EXCEPTION_ACCESS_VIOLATION:
 312             if (rec->NumberParameters == 2)
 313                 dbg_printf("page fault on %s access to 0x%08lx",
 314                            rec->ExceptionInformation[0] == EXCEPTION_WRITE_FAULT ? "write" :
 315                            rec->ExceptionInformation[0] == EXCEPTION_EXECUTE_FAULT ? "execute" : "read",
 316                            rec->ExceptionInformation[1]);
 317             else
 318                 dbg_printf("page fault");
 319             break;
 320         case EXCEPTION_DATATYPE_MISALIGNMENT:
 321             dbg_printf("Alignment");
 322             break;
 323         case DBG_CONTROL_C:
 324             dbg_printf("^C");
 325             break;
 326         case CONTROL_C_EXIT:
 327             dbg_printf("^C");
 328             break;
 329         case STATUS_POSSIBLE_DEADLOCK:
 330         {
 331             ADDRESS64       addr;
 332
 333             addr.Mode   = AddrModeFlat;
 334             addr.Offset = rec->ExceptionInformation[0];
 335
 336             dbg_printf("wait failed on critical section ");
 337             print_address(&addr, FALSE);
 338         }
 339         if (!DBG_IVAR(BreakOnCritSectTimeOut))
 340         {
 341             dbg_printf("\n");
 342             return DBG_EXCEPTION_NOT_HANDLED;
 343         }
 344         break;
 345         case EXCEPTION_WINE_STUB:
 346         {
 347             char dll[32], name[64];
 348             memory_get_string(dbg_curr_process,
 349                               (void*)rec->ExceptionInformation[0], TRUE, FALSE,
 350                               dll, sizeof(dll));
 351             if (HIWORD(rec->ExceptionInformation[1]))
 352                 memory_get_string(dbg_curr_process,
 353                                   (void*)rec->ExceptionInformation[1], TRUE, FALSE,
 354                                   name, sizeof(name));
 355             else
 356                 sprintf( name, "%ld", rec->ExceptionInformation[1] );
 357             dbg_printf("unimplemented function %s.%s called", dll, name);
 358         }
 359         break;
 360         case EXCEPTION_WINE_ASSERTION:
 361             dbg_printf("assertion failed");
 362             break;
 363         case EXCEPTION_VM86_INTx:
 364             dbg_printf("interrupt %02lx in vm86 mode", rec->ExceptionInformation[0]);
 365             break;
 366         case EXCEPTION_VM86_STI:
 367             dbg_printf("sti in vm86 mode");
 368             break;
 369         case EXCEPTION_VM86_PICRETURN:
 370             dbg_printf("PIC return in vm86 mode");
 371             break;
 372         case EXCEPTION_FLT_DENORMAL_OPERAND:
 373             dbg_printf("denormal float operand");
 374             break;
 375         case EXCEPTION_FLT_DIVIDE_BY_ZERO:
 376             dbg_printf("divide by zero");
 377             break;
 378         case EXCEPTION_FLT_INEXACT_RESULT:
 379             dbg_printf("inexact float result");
 380             break;
 381         case EXCEPTION_FLT_INVALID_OPERATION:
 382             dbg_printf("invalid float operation");
 383             break;
 384         case EXCEPTION_FLT_OVERFLOW:
 385             dbg_printf("floating point overflow");
 386             break;
 387         case EXCEPTION_FLT_UNDERFLOW:
 388             dbg_printf("floating point underflow");
 389             break;
 390         case EXCEPTION_FLT_STACK_CHECK:
 391             dbg_printf("floating point stack check");
 392             break;
 393         case CXX_EXCEPTION:
 394             if(rec->NumberParameters == 3 && rec->ExceptionInformation[0] == CXX_FRAME_MAGIC)
 395                 dbg_printf("C++ exception(object = 0x%08lx, type = 0x%08lx)",
 396                            rec->ExceptionInformation[1], rec->ExceptionInformation[2]);
 397             else
 398                 dbg_printf("C++ exception with strange parameter count %d or magic 0x%08lx",
 399                            rec->NumberParameters, rec->ExceptionInformation[0]);
 400             break;
 401         default:
 402             dbg_printf("0x%08x", rec->ExceptionCode);
 403             break;
 404         }
 405     }
 406     if( (rec->ExceptionFlags & EH_STACK_INVALID) ) {
 407         dbg_printf( ", invalid program stack" );
 408     }
 409
 410     if (dbg_exception_prolog(is_debug, first_chance, rec))
 411     {
 412         dbg_interactiveP = TRUE;
 413         return 0;
 414     }
 415     dbg_exception_epilog();
 416
 417     return DBG_CONTINUE;
 418 }
 419
 420 static BOOL tgt_process_active_close_process(struct dbg_process* pcs, BOOL kill);
 421
 422 static void fetch_module_name(void* name_addr, BOOL unicode, void* mod_addr,
 423                               WCHAR* buffer, size_t bufsz, BOOL is_pcs)
 424 {
 425     static WCHAR        pcspid[] = {'P','r','o','c','e','s','s','_','%','0','8','x',0};
 426     static WCHAR        dlladdr[] = {'D','L','L','_','%','0','8','l','x',0};
 427
 428     memory_get_string_indirect(dbg_curr_process, name_addr, unicode, buffer, bufsz);
 429     if (!buffer[0] &&
 430         !GetModuleFileNameExW(dbg_curr_process->handle, mod_addr, buffer, bufsz))
 431     {
 432         if (is_pcs)
 433         {
 434             HMODULE h;
 435             WORD (WINAPI *gpif)(HANDLE, LPWSTR, DWORD);
 436
 437             /* On Windows, when we get the process creation debug event for a process
 438              * created by winedbg, the modules' list is not initialized yet. Hence,
 439              * GetModuleFileNameExA (on the main module) will generate an error.
 440              * Psapi (starting on XP) provides GetProcessImageFileName() which should
 441              * give us the expected result
 442              */
 443             if (!(h = GetModuleHandleA("psapi")) ||
 444                 !(gpif = (void*)GetProcAddress(h, "GetProcessImageFileNameW")) ||
 445                 !(gpif)(dbg_curr_process->handle, buffer, bufsz))
 446                 snprintfW(buffer, bufsz, pcspid, dbg_curr_pid);
 447         }
 448         else
 449             snprintfW(buffer, bufsz, dlladdr, (unsigned long)mod_addr);
 450     }
 451 }
 452
 453 static unsigned dbg_handle_debug_event(DEBUG_EVENT* de)
 454 {
 455     union {
 456         char    bufferA[256];
 457         WCHAR   buffer[256];
 458     } u;
 459     DWORD       cont = DBG_CONTINUE;
 460
 461     dbg_curr_pid = de->dwProcessId;
 462     dbg_curr_tid = de->dwThreadId;
 463
 464     if ((dbg_curr_process = dbg_get_process(de->dwProcessId)) != NULL)
 465         dbg_curr_thread = dbg_get_thread(dbg_curr_process, de->dwThreadId);
 466     else
 467         dbg_curr_thread = NULL;
 468
 469     switch (de->dwDebugEventCode)
 470     {
 471     case EXCEPTION_DEBUG_EVENT:
 472         if (!dbg_curr_thread)
 473         {
 474             WINE_ERR("%04x:%04x: not a registered process or thread (perhaps a 16 bit one ?)\n",
 475                      de->dwProcessId, de->dwThreadId);
 476             break;
 477         }
 478
 479         WINE_TRACE("%04x:%04x: exception code=%08x\n",
 480                    de->dwProcessId, de->dwThreadId,
 481                    de->u.Exception.ExceptionRecord.ExceptionCode);
 482
 483         if (dbg_curr_process->continue_on_first_exception)
 484         {
 485             dbg_curr_process->continue_on_first_exception = FALSE;
 486             if (!DBG_IVAR(BreakOnAttach)) break;
 487         }
 488         if (dbg_fetch_context())
 489         {
 490             cont = dbg_handle_exception(&de->u.Exception.ExceptionRecord,
 491                                         de->u.Exception.dwFirstChance);
 492             if (cont && dbg_curr_thread)
 493             {
 494                 SetThreadContext(dbg_curr_thread->handle, &dbg_context);
 495             }
 496         }
 497         break;
 498
 499     case CREATE_PROCESS_DEBUG_EVENT:
 500         dbg_curr_process = dbg_add_process(&be_process_active_io, de->dwProcessId,
 501                                            de->u.CreateProcessInfo.hProcess);
 502         if (dbg_curr_process == NULL)
 503         {
 504             WINE_ERR("Couldn't create process\n");
 505             break;
 506         }
 507         fetch_module_name(de->u.CreateProcessInfo.lpImageName,
 508                           de->u.CreateProcessInfo.fUnicode,
 509                           de->u.CreateProcessInfo.lpBaseOfImage,
 510                           u.buffer, sizeof(u.buffer) / sizeof(WCHAR), TRUE);
 511
 512         WINE_TRACE("%04x:%04x: create process '%s'/%p @%p (%u<%u>)\n",
 513                    de->dwProcessId, de->dwThreadId,
 514                    wine_dbgstr_w(u.buffer),
 515                    de->u.CreateProcessInfo.lpImageName,
 516                    de->u.CreateProcessInfo.lpStartAddress,
 517                    de->u.CreateProcessInfo.dwDebugInfoFileOffset,
 518                    de->u.CreateProcessInfo.nDebugInfoSize);
 519         dbg_set_process_name(dbg_curr_process, u.buffer);
 520
 521         if (!dbg_init(dbg_curr_process->handle, u.buffer, FALSE))
 522             dbg_printf("Couldn't initiate DbgHelp\n");
 523         if (!dbg_load_module(dbg_curr_process->handle, de->u.CreateProcessInfo.hFile, u.buffer,
 524                              (DWORD_PTR)de->u.CreateProcessInfo.lpBaseOfImage, 0))
 525             dbg_printf("couldn't load main module (%u)\n", GetLastError());
 526
 527         WINE_TRACE("%04x:%04x: create thread I @%p\n",
 528                    de->dwProcessId, de->dwThreadId, de->u.CreateProcessInfo.lpStartAddress);
 529
 530         dbg_curr_thread = dbg_add_thread(dbg_curr_process,
 531                                          de->dwThreadId,
 532                                          de->u.CreateProcessInfo.hThread,
 533                                          de->u.CreateProcessInfo.lpThreadLocalBase);
 534         if (!dbg_curr_thread)
 535         {
 536             WINE_ERR("Couldn't create thread\n");
 537             break;
 538         }
 539         dbg_init_current_process();
 540         dbg_init_current_thread(de->u.CreateProcessInfo.lpStartAddress);
 541         break;
 542
 543     case EXIT_PROCESS_DEBUG_EVENT:
 544         WINE_TRACE("%04x:%04x: exit process (%d)\n",
 545                    de->dwProcessId, de->dwThreadId, de->u.ExitProcess.dwExitCode);
 546
 547         if (dbg_curr_process == NULL)
 548         {
 549             WINE_ERR("Unknown process\n");
 550             break;
 551         }
 552         tgt_process_active_close_process(dbg_curr_process, FALSE);
 553         dbg_printf("Process of pid=%04x has terminated\n", de->dwProcessId);
 554         break;
 555
 556     case CREATE_THREAD_DEBUG_EVENT:
 557         WINE_TRACE("%04x:%04x: create thread D @%p\n",
 558                    de->dwProcessId, de->dwThreadId, de->u.CreateThread.lpStartAddress);
 559
 560         if (dbg_curr_process == NULL)
 561         {
 562             WINE_ERR("Unknown process\n");
 563             break;
 564         }
 565         if (dbg_get_thread(dbg_curr_process, de->dwThreadId) != NULL)
 566         {
 567             WINE_TRACE("Thread already listed, skipping\n");
 568             break;
 569         }
 570
 571         dbg_curr_thread = dbg_add_thread(dbg_curr_process,
 572                                          de->dwThreadId,
 573                                          de->u.CreateThread.hThread,
 574                                          de->u.CreateThread.lpThreadLocalBase);
 575         if (!dbg_curr_thread)
 576         {
 577             WINE_ERR("Couldn't create thread\n");
 578             break;
 579         }
 580         dbg_init_current_thread(de->u.CreateThread.lpStartAddress);
 581         break;
 582
 583     case EXIT_THREAD_DEBUG_EVENT:
 584         WINE_TRACE("%04x:%04x: exit thread (%d)\n",
 585                    de->dwProcessId, de->dwThreadId, de->u.ExitThread.dwExitCode);
 586
 587         if (dbg_curr_thread == NULL)
 588         {
 589             WINE_ERR("Unknown thread\n");
 590             break;
 591         }
 592         /* FIXME: remove break point set on thread startup */
 593         dbg_del_thread(dbg_curr_thread);
 594         break;
 595
 596     case LOAD_DLL_DEBUG_EVENT:
 597         if (dbg_curr_thread == NULL)
 598         {
 599             WINE_ERR("Unknown thread\n");
 600             break;
 601         }
 602         fetch_module_name(de->u.LoadDll.lpImageName,
 603                           de->u.LoadDll.fUnicode,
 604                           de->u.LoadDll.lpBaseOfDll,
 605                           u.buffer, sizeof(u.buffer) / sizeof(WCHAR), FALSE);
 606
 607         WINE_TRACE("%04x:%04x: loads DLL %s @%p (%u<%u>)\n",
 608                    de->dwProcessId, de->dwThreadId,
 609                    wine_dbgstr_w(u.buffer), de->u.LoadDll.lpBaseOfDll,
 610                    de->u.LoadDll.dwDebugInfoFileOffset,
 611                    de->u.LoadDll.nDebugInfoSize);
 612         dbg_load_module(dbg_curr_process->handle, de->u.LoadDll.hFile, u.buffer,
 613                         (DWORD_PTR)de->u.LoadDll.lpBaseOfDll, 0);
 614         break_set_xpoints(FALSE);
 615         break_check_delayed_bp();
 616         break_set_xpoints(TRUE);
 617         if (DBG_IVAR(BreakOnDllLoad))
 618         {
 619             dbg_printf("Stopping on DLL %s loading at %p\n",
 620                        dbg_W2A(u.buffer, -1), de->u.LoadDll.lpBaseOfDll);
 621             if (dbg_fetch_context()) cont = 0;
 622         }
 623         break;
 624
 625     case UNLOAD_DLL_DEBUG_EVENT:
 626         WINE_TRACE("%04x:%04x: unload DLL @%p\n",
 627                    de->dwProcessId, de->dwThreadId,
 628                    de->u.UnloadDll.lpBaseOfDll);
 629         break_delete_xpoints_from_module((DWORD_PTR)de->u.UnloadDll.lpBaseOfDll);
 630         SymUnloadModule64(dbg_curr_process->handle, (DWORD_PTR)de->u.UnloadDll.lpBaseOfDll);
 631         break;
 632
 633     case OUTPUT_DEBUG_STRING_EVENT:
 634         if (dbg_curr_thread == NULL)
 635         {
 636             WINE_ERR("Unknown thread\n");
 637             break;
 638         }
 639
 640         memory_get_string(dbg_curr_process,
 641                           de->u.DebugString.lpDebugStringData, TRUE,
 642                           de->u.DebugString.fUnicode, u.bufferA, sizeof(u.bufferA));
 643         WINE_TRACE("%04x:%04x: output debug string (%s)\n",
 644                    de->dwProcessId, de->dwThreadId, u.bufferA);
 645         break;
 646
 647     case RIP_EVENT:
 648         WINE_TRACE("%04x:%04x: rip error=%u type=%u\n",
 649                    de->dwProcessId, de->dwThreadId, de->u.RipInfo.dwError,
 650                    de->u.RipInfo.dwType);
 651         break;
 652
 653     default:
 654         WINE_TRACE("%04x:%04x: unknown event (%x)\n",
 655                    de->dwProcessId, de->dwThreadId, de->dwDebugEventCode);
 656     }
 657     if (!cont) return TRUE;  /* stop execution */
 658     ContinueDebugEvent(de->dwProcessId, de->dwThreadId, cont);
 659     return FALSE;  /* continue execution */
 660 }
 661
 662 static void dbg_resume_debuggee(DWORD cont)
 663 {
 664     if (dbg_curr_thread->in_exception)
 665     {
 666         ADDRESS64       addr;
 667         char            hexbuf[MAX_OFFSET_TO_STR_LEN];
 668
 669         dbg_exception_epilog();
 670         memory_get_current_pc(&addr);
 671         WINE_TRACE("Exiting debugger      PC=%s mode=%d count=%d\n",
 672                    memory_offset_to_string(hexbuf, addr.Offset, 0),
 673                    dbg_curr_thread->exec_mode,
 674                    dbg_curr_thread->exec_count);
 675         if (dbg_curr_thread)
 676         {
 677             if (!SetThreadContext(dbg_curr_thread->handle, &dbg_context))
 678                 dbg_printf("Cannot set ctx on %04lx\n", dbg_curr_tid);
 679         }
 680     }
 681     dbg_interactiveP = FALSE;
 682     if (!ContinueDebugEvent(dbg_curr_pid, dbg_curr_tid, cont))
 683         dbg_printf("Cannot continue on %04lx (%08x)\n", dbg_curr_tid, cont);
 684 }
 685
 686 static void wait_exception(void)
 687 {
 688     DEBUG_EVENT         de;
 689
 690     while (dbg_num_processes() && WaitForDebugEvent(&de, INFINITE))
 691     {
 692         if (dbg_handle_debug_event(&de)) break;
 693     }
 694     dbg_interactiveP = TRUE;
 695 }
 696
 697 void dbg_wait_next_exception(DWORD cont, int count, int mode)
 698 {
 699     ADDRESS64           addr;
 700     char                hexbuf[MAX_OFFSET_TO_STR_LEN];
 701
 702     if (cont == DBG_CONTINUE)
 703     {
 704         dbg_curr_thread->exec_count = count;
 705         dbg_curr_thread->exec_mode = mode;
 706     }
 707     dbg_resume_debuggee(cont);
 708
 709     wait_exception();
 710     if (!dbg_curr_process) return;
 711
 712     memory_get_current_pc(&addr);
 713     WINE_TRACE("Entering debugger     PC=%s mode=%d count=%d\n",
 714                memory_offset_to_string(hexbuf, addr.Offset, 0),
 715                dbg_curr_thread->exec_mode,
 716                dbg_curr_thread->exec_count);
 717 }
 718
 719 void     dbg_active_wait_for_first_exception(void)
 720 {
 721     dbg_interactiveP = FALSE;
 722     /* wait for first exception */
 723     wait_exception();
 724 }
 725
 726 static  unsigned dbg_start_debuggee(LPSTR cmdLine)
 727 {
 728     PROCESS_INFORMATION info;
 729     STARTUPINFOA        startup, current;
 730     DWORD               flags;
 731
 732     GetStartupInfoA(&current);
 733
 734     memset(&startup, 0, sizeof(startup));
 735     startup.cb = sizeof(startup);
 736     startup.dwFlags = STARTF_USESHOWWINDOW;
 737
 738     startup.wShowWindow = (current.dwFlags & STARTF_USESHOWWINDOW) ?
 739         current.wShowWindow : SW_SHOWNORMAL;
 740
 741     /* FIXME: shouldn't need the CREATE_NEW_CONSOLE, but as usual CUI:s need it
 742      * while GUI:s don't
 743      */
 744     flags = DEBUG_PROCESS | CREATE_NEW_CONSOLE;
 745     if (!DBG_IVAR(AlsoDebugProcChild)) flags |= DEBUG_ONLY_THIS_PROCESS;
 746
 747     if (!CreateProcessA(NULL, cmdLine, NULL, NULL, FALSE, flags,
 748                         NULL, NULL, &startup, &info))
 749     {
 750         dbg_printf("Couldn't start process '%s'\n", cmdLine);
 751         return FALSE;
 752     }
 753     if (!info.dwProcessId)
 754     {
 755         /* this happens when the program being run is not a Wine binary
 756          * (for example, a shell wrapper around a WineLib app)
 757          */
 758         /* Current fix: list running processes and let the user attach
 759          * to one of them (sic)
 760          * FIXME: implement a real fix => grab the process (from the
 761          * running processes) from its name
 762          */
 763         dbg_printf("Debuggee has been started (%s)\n"
 764                    "But WineDbg isn't attached to it. Maybe you're trying to debug a winelib wrapper ??\n"
 765                    "Try to attach to one of those processes:\n", cmdLine);
 766         /* FIXME: (HACK) we need some time before the wrapper executes the winelib app */
 767         Sleep(100);
 768         info_win32_processes();
 769         return TRUE;
 770     }
 771     dbg_curr_pid = info.dwProcessId;
 772     if (!(dbg_curr_process = dbg_add_process(&be_process_active_io, dbg_curr_pid, 0))) return FALSE;
 773     dbg_curr_process->active_debuggee = TRUE;
 774
 775     return TRUE;
 776 }
 777
 778 void    dbg_run_debuggee(const char* args)
 779 {
 780     if (args)
 781     {
 782         WINE_FIXME("Re-running current program with %s as args is broken\n", args);
 783         return;
 784     }
 785     else
 786     {
 787         if (!dbg_last_cmd_line)
 788         {
 789             dbg_printf("Cannot find previously used command line.\n");
 790             return;
 791         }
 792         dbg_start_debuggee(dbg_last_cmd_line);
 793         dbg_active_wait_for_first_exception();
 794         source_list_from_addr(NULL, 0);
 795     }
 796 }
 797
 798 static BOOL str2int(const char* str, DWORD_PTR* val)
 799 {
 800     char*   ptr;
 801
 802     *val = strtol(str, &ptr, 10);
 803     return str < ptr && !*ptr;
 804 }
 805
 806
 807 /******************************************************************
 808  *              dbg_active_attach
 809  *
 810  * Tries to attach to a running process
 811  * Handles the <pid> or <pid> <evt> forms
 812  */
 813 enum dbg_start  dbg_active_attach(int argc, char* argv[])
 814 {
 815     DWORD_PTR pid, evt;
 816
 817     /* try the form <myself> pid */
 818     if (argc == 1 && str2int(argv[0], &pid) && pid != 0)
 819     {
 820         if (!dbg_attach_debuggee(pid, FALSE))
 821             return start_error_init;
 822     }
 823     /* try the form <myself> pid evt (Win32 JIT debugger) */
 824     else if (argc == 2 && str2int(argv[0], &pid) && pid != 0 &&
 825              str2int(argv[1], &evt) && evt != 0)
 826     {
 827         if (!dbg_attach_debuggee(pid, TRUE))
 828         {
 829             /* don't care about result */
 830             SetEvent((HANDLE)evt);
 831             return start_error_init;
 832         }
 833         if (!SetEvent((HANDLE)evt))
 834         {
 835             WINE_ERR("Invalid event handle: %lx\n", evt);
 836             return start_error_init;
 837         }
 838         CloseHandle((HANDLE)evt);
 839     }
 840     else return start_error_parse;
 841
 842     dbg_curr_pid = pid;
 843     return start_ok;
 844 }
 845
 846 /******************************************************************
 847  *              dbg_active_launch
 848  *
 849  * Launches a debuggee (with its arguments) from argc/argv
 850  */
 851 enum dbg_start    dbg_active_launch(int argc, char* argv[])
 852 {
 853     int         i, len;
 854     LPSTR       cmd_line;
 855
 856     if (argc == 0) return start_error_parse;
 857
 858     if (!(cmd_line = HeapAlloc(GetProcessHeap(), 0, len = 1)))
 859     {
 860     oom_leave:
 861         dbg_printf("Out of memory\n");
 862         return start_error_init;
 863     }
 864     cmd_line[0] = '\0';
 865
 866     for (i = 0; i < argc; i++)
 867     {
 868         len += strlen(argv[i]) + 1;
 869         if (!(cmd_line = HeapReAlloc(GetProcessHeap(), 0, cmd_line, len)))
 870             goto oom_leave;
 871         strcat(cmd_line, argv[i]);
 872         cmd_line[len - 2] = ' ';
 873         cmd_line[len - 1] = '\0';
 874     }
 875
 876     if (!dbg_start_debuggee(cmd_line))
 877     {
 878         HeapFree(GetProcessHeap(), 0, cmd_line);
 879         return start_error_init;
 880     }
 881     HeapFree(GetProcessHeap(), 0, dbg_last_cmd_line);
 882     dbg_last_cmd_line = cmd_line;
 883     return start_ok;
 884 }
 885
 886 /******************************************************************
 887  *              dbg_active_auto
 888  *
 889  * Starts (<pid> or <pid> <evt>) in automatic mode
 890  */
 891 enum dbg_start dbg_active_auto(int argc, char* argv[])
 892 {
 893     HANDLE              hFile;
 894     enum dbg_start      ds = start_error_parse;
 895
 896     if (!strcmp(argv[0], "--auto"))
 897     {
 898         /* auto mode */
 899         argc--; argv++;
 900         ds = dbg_active_attach(argc, argv);
 901         if (ds != start_ok) {
 902             msgbox_res_id(NULL, IDS_INVALID_PARAMS, IDS_AUTO_CAPTION, MB_OK);
 903             return ds;
 904         }
 905         if (!display_crash_dialog()) {
 906             dbg_init_console();
 907             dbg_start_interactive(INVALID_HANDLE_VALUE);
 908             return start_ok;
 909         }
 910
 911         hFile = parser_generate_command_file("echo Modules:", "info share",
 912                                              "echo Threads:", "info threads",
 913                                              "backtrace", "detach", NULL);
 914     }
 915     else if (!strcmp(argv[0], "--minidump"))
 916     {
 917         const char*     file = NULL;
 918         char            tmp[8 + 1 + MAX_PATH]; /* minidump <file> */
 919
 920         argc--; argv++;
 921         /* hard stuff now ; we can get things like:
 922          * --minidump <pid>                     1 arg
 923          * --minidump <pid> <evt>               2 args
 924          * --minidump <file> <pid>              2 args
 925          * --minidump <file> <pid> <evt>        3 args
 926          */
 927         switch (argc)
 928         {
 929         case 1:
 930             ds = dbg_active_attach(argc, argv);
 931             break;
 932         case 2:
 933             if ((ds = dbg_active_attach(argc, argv)) != start_ok)
 934             {
 935                 file = argv[0];
 936                 ds = dbg_active_attach(argc - 1, argv + 1);
 937             }
 938             break;
 939         case 3:
 940             file = argv[0];
 941             ds = dbg_active_attach(argc - 1, argv + 1);
 942             break;
 943         default:
 944             return start_error_parse;
 945         }
 946         if (ds != start_ok) return ds;
 947         memcpy(tmp, "minidump \"", 10);
 948         if (!file)
 949         {
 950             char        path[MAX_PATH];
 951
 952             GetTempPathA(sizeof(path), path);
 953             GetTempFileNameA(path, "WD", 0, tmp + 10);
 954         }
 955         else strcpy(tmp + 10, file);
 956         strcat(tmp, "\"");
 957         if (!file)
 958         {
 959             /* FIXME: should generate unix name as well */
 960             dbg_printf("Capturing program state in %s\n", tmp + 9);
 961         }
 962         hFile = parser_generate_command_file(tmp, "detach", NULL);
 963     }
 964     else return start_error_parse;
 965     if (hFile == INVALID_HANDLE_VALUE) return start_error_parse;
 966
 967     if (dbg_curr_process->active_debuggee)
 968         dbg_active_wait_for_first_exception();
 969
 970     dbg_interactiveP = TRUE;
 971     parser_handle(hFile);
 972
 973     return start_ok;
 974 }
 975
 976 static BOOL tgt_process_active_close_process(struct dbg_process* pcs, BOOL kill)
 977 {
 978     if (pcs == dbg_curr_process)
 979     {
 980         /* remove all set breakpoints in debuggee code */
 981         break_set_xpoints(FALSE);
 982         /* needed for single stepping (ugly).
 983          * should this be handled inside the server ???
 984          */
 985         be_cpu->single_step(&dbg_context, FALSE);
 986         if (dbg_curr_thread->in_exception)
 987         {
 988             SetThreadContext(dbg_curr_thread->handle, &dbg_context);
 989             ContinueDebugEvent(dbg_curr_pid, dbg_curr_tid, DBG_CONTINUE);
 990         }
 991     }
 992     if (kill)
 993     {
 994         TerminateProcess(pcs->handle, 0);
 995     }
 996     else
 997     {
 998         if (!DebugActiveProcessStop(pcs->pid)) return FALSE;
 999     }
1000     SymCleanup(pcs->handle);
1001     dbg_del_process(pcs);
1002
1003     return TRUE;
1004 }
1005
1006 static BOOL tgt_process_active_read(HANDLE hProcess, const void* addr,
1007                                     void* buffer, SIZE_T len, SIZE_T* rlen)
1008 {
1009     return ReadProcessMemory( hProcess, addr, buffer, len, rlen );
1010 }
1011
1012 static BOOL tgt_process_active_write(HANDLE hProcess, void* addr,
1013                                      const void* buffer, SIZE_T len, SIZE_T* wlen)
1014 {
1015     return WriteProcessMemory( hProcess, addr, buffer, len, wlen );
1016 }
1017
1018 static BOOL tgt_process_active_get_selector(HANDLE hThread, DWORD sel, LDT_ENTRY* le)
1019 {
1020     return GetThreadSelectorEntry( hThread, sel, le );
1021 }
1022
1023 static struct be_process_io be_process_active_io =
1024 {
1025     tgt_process_active_close_process,
1026     tgt_process_active_read,
1027     tgt_process_active_write,
1028     tgt_process_active_get_selector
1029 };