programs/winedbg/info.c

   1 /*
   2  * Wine debugger utility routines
   3  *
   4  * Copyright 1993 Eric Youngdale
   5  * Copyright 1995 Alexandre Julliard
   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 "config.h"
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include "winbase.h"
  26 #include "wingdi.h"
  27 #include "winuser.h"
  28 #include "tlhelp32.h"
  29 #include "debugger.h"
  30 #include "expr.h"
  31
  32 /***********************************************************************
  33  *           DEBUG_PrintBasic
  34  *
  35  * Implementation of the 'print' command.
  36  */
  37 void DEBUG_PrintBasic( const DBG_VALUE* value, int count, char format )
  38 {
  39     char        * default_format;
  40     long long int res;
  41
  42     assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
  43     if (value->type == NULL)
  44     {
  45         DEBUG_Printf(DBG_CHN_MESG, "Unable to evaluate expression\n");
  46         return;
  47     }
  48
  49     default_format = NULL;
  50     res = DEBUG_GetExprValue(value, &default_format);
  51
  52     switch (format)
  53     {
  54     case 'x':
  55         if (value->addr.seg)
  56         {
  57             DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "0x%04lx", (long unsigned int)res);
  58         }
  59         else
  60         {
  61             DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "0x%08lx", (long unsigned int)res);
  62         }
  63         break;
  64
  65     case 'd':
  66         DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%ld\n", (long int)res);
  67         break;
  68
  69     case 'c':
  70         DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%d = '%c'",
  71                                     (char)(res & 0xff), (char)(res & 0xff));
  72         break;
  73
  74     case 'u':
  75     {
  76         WCHAR wch = (WCHAR)(res & 0xFFFF);
  77         DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%d = '", (unsigned)(res & 0xffff));
  78         DEBUG_OutputW(DBG_CHN_MESG, &wch, 1);
  79         DEBUG_Printf(DBG_CHN_MESG, "'");
  80     }
  81     break;
  82
  83     case 'i':
  84     case 's':
  85     case 'w':
  86     case 'b':
  87         DEBUG_Printf(DBG_CHN_MESG, "Format specifier '%c' is meaningless in 'print' command\n", format);
  88     case 0:
  89         if (default_format == NULL) break;
  90
  91         if (strstr(default_format, "%S") != NULL)
  92         {
  93             char*       ptr;
  94             int state = 0;
  95
  96             /* FIXME: simplistic implementation for default_format being
  97              * foo%Sbar => will print foo, then string then bar
  98              */
  99             for (ptr = default_format; *ptr; ptr++)
 100             {
 101                 if (*ptr == '%')
 102                 {
 103                     state++;
 104                 }
 105                 else if (state == 1)
 106                 {
 107                     if (*ptr == 'S')
 108                     {
 109                         DBG_ADDR    addr;
 110
 111                         addr.seg = 0;
 112                         addr.off = (long)res;
 113                         DEBUG_nchar += DEBUG_PrintStringA(DBG_CHN_MESG, &addr, -1);
 114                     }
 115                     else
 116                     {
 117                         /* shouldn't happen */
 118                         DEBUG_Printf(DBG_CHN_MESG, "%%%c", *ptr);
 119                         DEBUG_nchar += 2;
 120                     }
 121                     state = 0;
 122                 }
 123                 else
 124                 {
 125                     DEBUG_OutputA(DBG_CHN_MESG, ptr, 1);
 126                     DEBUG_nchar++;
 127                 }
 128             }
 129         }
 130         else if (strcmp(default_format, "%B") == 0)
 131         {
 132             DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%s", res ? "true" : "false");
 133         }
 134         else if (strcmp(default_format, "%R") == 0)
 135         {
 136             if (value->cookie == DV_HOST)
 137                 DEBUG_InfoRegisters((CONTEXT*)value->addr.off);
 138             else
 139                 DEBUG_Printf(DBG_CHN_MESG, "NIY: info on register struct in debuggee address space\n");
 140             DEBUG_nchar = 0;
 141         }
 142         else
 143         {
 144             DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, default_format, res);
 145         }
 146         break;
 147     }
 148 }
 149
 150
 151 /***********************************************************************
 152  *           DEBUG_PrintAddress
 153  *
 154  * Print an 16- or 32-bit address, with the nearest symbol if any.
 155  */
 156 struct symbol_info
 157 DEBUG_PrintAddress( const DBG_ADDR *addr, enum dbg_mode mode, int flag )
 158 {
 159     struct symbol_info rtn;
 160
 161     const char *name = DEBUG_FindNearestSymbol( addr, flag, &rtn.sym, 0,
 162                                                 &rtn.list );
 163
 164     if (addr->seg) DEBUG_Printf( DBG_CHN_MESG, "0x%04lx:", addr->seg&0xFFFF );
 165     if (mode != MODE_32) DEBUG_Printf( DBG_CHN_MESG, "0x%04lx", addr->off );
 166     else DEBUG_Printf( DBG_CHN_MESG, "0x%08lx", addr->off );
 167     if (name) DEBUG_Printf( DBG_CHN_MESG, " (%s)", name );
 168     return rtn;
 169 }
 170 /***********************************************************************
 171  *           DEBUG_PrintAddressAndArgs
 172  *
 173  * Print an 16- or 32-bit address, with the nearest symbol if any.
 174  * Similar to DEBUG_PrintAddress, but we print the arguments to
 175  * each function (if known).  This is useful in a backtrace.
 176  */
 177 struct symbol_info
 178 DEBUG_PrintAddressAndArgs( const DBG_ADDR *addr, enum dbg_mode mode,
 179                            unsigned int ebp, int flag )
 180 {
 181     struct symbol_info rtn;
 182
 183     const char *name = DEBUG_FindNearestSymbol( addr, flag, &rtn.sym, ebp,
 184                                                 &rtn.list );
 185
 186     if (addr->seg) DEBUG_Printf( DBG_CHN_MESG, "0x%04lx:", addr->seg );
 187     if (mode != MODE_32) DEBUG_Printf( DBG_CHN_MESG, "0x%04lx", addr->off );
 188     else DEBUG_Printf( DBG_CHN_MESG, "0x%08lx", addr->off );
 189     if (name) DEBUG_Printf( DBG_CHN_MESG, " (%s)", name );
 190
 191     return rtn;
 192 }
 193
 194
 195 /***********************************************************************
 196  *           DEBUG_Help
 197  *
 198  * Implementation of the 'help' command.
 199  */
 200 void DEBUG_Help(void)
 201 {
 202     int i = 0;
 203     static const char * const helptext[] =
 204 {
 205 "The commands accepted by the Wine debugger are a reasonable",
 206 "subset of the commands that gdb accepts.",
 207 "The commands currently are:",
 208 "  help                                   quit",
 209 "  break [*<addr>]                        watch *<addr>",
 210 "  delete break bpnum                     disable bpnum",
 211 "  enable bpnum                           condition <bpnum> [<expr>]",
 212 "  finish                                 cont [N]",
 213 "  step [N]                               next [N]",
 214 "  stepi [N]                              nexti [N]",
 215 "  x <addr>                               print <expr>",
 216 "  display <expr>                         undisplay <disnum>",
 217 "  delete display <disnum>                pass",
 218 "  bt                                     frame <n>",
 219 "  up                                     down",
 220 "  list <lines>                           disassemble [<addr>][,<addr>]",
 221 "  show dir                               dir <path>",
 222 "  set <reg> = <expr>                     set *<addr> = <expr>",
 223 "  mode [16,32,vm86]                      walk [wnd,class,queue,module,",
 224 "  whatis                                       process,modref <pid>]",
 225 "  info (see 'help info' for options)     debugmsg <class>[-+]<type>\n",
 226
 227 "The 'x' command accepts repeat counts and formats (including 'i') in the",
 228 "same way that gdb does.\n",
 229
 230 " The following are examples of legal expressions:",
 231 " $eax     $eax+0x3   0x1000   ($eip + 256)  *$eax   *($esp + 3)",
 232 " Also, a nm format symbol table can be read from a file using the",
 233 " symbolfile command.  Symbols can also be defined individually with",
 234 " the define command.",
 235 "",
 236 NULL
 237 };
 238
 239     while(helptext[i]) DEBUG_Printf(DBG_CHN_MESG,"%s\n", helptext[i++]);
 240 }
 241
 242
 243 /***********************************************************************
 244  *           DEBUG_HelpInfo
 245  *
 246  * Implementation of the 'help info' command.
 247  */
 248 void DEBUG_HelpInfo(void)
 249 {
 250     int i = 0;
 251     static const char * const infotext[] =
 252 {
 253 "The info commands allow you to get assorted bits of interesting stuff",
 254 "to be displayed.  The options are:",
 255 "  info break           Dumps information about breakpoints",
 256 "  info display         Shows auto-display expressions in use",
 257 "  info locals          Displays values of all local vars for current frame",
 258 "  info maps            Dumps all virtual memory mappings",
 259 "  info module <handle> Displays internal module state",
 260 "  info queue <handle>  Displays internal queue state",
 261 "  info reg             Displays values in all registers at top of stack",
 262 "  info segments        Dumps information about all known segments",
 263 "  info share           Dumps information about shared libraries",
 264 "  info stack           Dumps information about top of stack",
 265 "  info wnd <handle>    Displays internal window state",
 266 "",
 267 NULL
 268 };
 269
 270     while(infotext[i]) DEBUG_Printf(DBG_CHN_MESG,"%s\n", infotext[i++]);
 271 }
 272
 273 /* FIXME: merge InfoClass and InfoClass2 */
 274 void DEBUG_InfoClass(const char* name)
 275 {
 276    WNDCLASSEXA  wca;
 277
 278    if (!GetClassInfoEx(0, name, &wca)) {
 279       DEBUG_Printf(DBG_CHN_MESG, "Cannot find class '%s'\n", name);
 280       return;
 281    }
 282
 283    DEBUG_Printf(DBG_CHN_MESG,  "Class '%s':\n", name);
 284    DEBUG_Printf(DBG_CHN_MESG,
 285                 "style=%08x  wndProc=%08lx\n"
 286                 "inst=%p  icon=%p  cursor=%p  bkgnd=%p\n"
 287                 "clsExtra=%d  winExtra=%d\n",
 288                 wca.style, (DWORD)wca.lpfnWndProc, wca.hInstance,
 289                 wca.hIcon, wca.hCursor, wca.hbrBackground,
 290                 wca.cbClsExtra, wca.cbWndExtra);
 291
 292    /* FIXME:
 293     * + print #windows (or even list of windows...)
 294     * + print extra bytes => this requires a window handle on this very class...
 295     */
 296 }
 297
 298 static  void DEBUG_InfoClass2(HWND hWnd, const char* name)
 299 {
 300    WNDCLASSEXA  wca;
 301
 302    if (!GetClassInfoEx((HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE), name, &wca)) {
 303       DEBUG_Printf(DBG_CHN_MESG, "Cannot find class '%s'\n", name);
 304       return;
 305    }
 306
 307    DEBUG_Printf(DBG_CHN_MESG,  "Class '%s':\n", name);
 308    DEBUG_Printf(DBG_CHN_MESG,
 309                 "style=%08x  wndProc=%08lx\n"
 310                 "inst=%p  icon=%p  cursor=%p  bkgnd=%p\n"
 311                 "clsExtra=%d  winExtra=%d\n",
 312                 wca.style, (DWORD)wca.lpfnWndProc, wca.hInstance,
 313                 wca.hIcon, wca.hCursor, wca.hbrBackground,
 314                 wca.cbClsExtra, wca.cbWndExtra);
 315
 316    if (wca.cbClsExtra) {
 317       int               i;
 318       WORD              w;
 319
 320       DEBUG_Printf(DBG_CHN_MESG,  "Extra bytes:" );
 321       for (i = 0; i < wca.cbClsExtra / 2; i++) {
 322          w = GetClassWord(hWnd, i * 2);
 323          /* FIXME: depends on i386 endian-ity */
 324          DEBUG_Printf(DBG_CHN_MESG,  " %02x", HIBYTE(w));
 325          DEBUG_Printf(DBG_CHN_MESG,  " %02x", LOBYTE(w));
 326       }
 327       DEBUG_Printf(DBG_CHN_MESG,  "\n" );
 328     }
 329     DEBUG_Printf(DBG_CHN_MESG,  "\n" );
 330 }
 331
 332 struct class_walker {
 333    ATOM*        table;
 334    int          used;
 335    int          alloc;
 336 };
 337
 338 static  void DEBUG_WalkClassesHelper(HWND hWnd, struct class_walker* cw)
 339 {
 340    char clsName[128];
 341    int  i;
 342    ATOM atom;
 343    HWND child;
 344
 345    if (!GetClassName(hWnd, clsName, sizeof(clsName)))
 346       return;
 347    if ((atom = FindAtom(clsName)) == 0)
 348       return;
 349
 350    for (i = 0; i < cw->used; i++) {
 351       if (cw->table[i] == atom)
 352          break;
 353    }
 354    if (i == cw->used) {
 355       if (cw->used >= cw->alloc) {
 356          cw->alloc += 16;
 357          cw->table = DBG_realloc(cw->table, cw->alloc * sizeof(ATOM));
 358       }
 359       cw->table[cw->used++] = atom;
 360       DEBUG_InfoClass2(hWnd, clsName);
 361    }
 362    do {
 363       if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
 364          DEBUG_WalkClassesHelper(child, cw);
 365    } while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
 366 }
 367
 368 void DEBUG_WalkClasses(void)
 369 {
 370    struct class_walker cw;
 371
 372    cw.table = NULL;
 373    cw.used = cw.alloc = 0;
 374    DEBUG_WalkClassesHelper(GetDesktopWindow(), &cw);
 375    DBG_free(cw.table);
 376 }
 377
 378 void DEBUG_DumpQueue(DWORD q)
 379 {
 380    DEBUG_Printf(DBG_CHN_MESG, "No longer doing info queue '0x%08lx'\n", q);
 381 }
 382
 383 void DEBUG_WalkQueues(void)
 384 {
 385    DEBUG_Printf(DBG_CHN_MESG, "No longer walking queues list\n");
 386 }
 387
 388 void DEBUG_InfoWindow(HWND hWnd)
 389 {
 390    char clsName[128];
 391    char wndName[128];
 392    RECT clientRect;
 393    RECT windowRect;
 394    int  i;
 395    WORD w;
 396
 397    if (!GetClassName(hWnd, clsName, sizeof(clsName)))
 398        strcpy(clsName, "-- Unknown --");
 399    if (!GetWindowText(hWnd, wndName, sizeof(wndName)))
 400       strcpy(wndName, "-- Empty --");
 401    if (!GetClientRect(hWnd, &clientRect))
 402       SetRectEmpty(&clientRect);
 403    if (!GetWindowRect(hWnd, &windowRect))
 404       SetRectEmpty(&windowRect);
 405
 406    /* FIXME missing fields: hmemTaskQ, hrgnUpdate, dce, flags, pProp, scroll */
 407    DEBUG_Printf(DBG_CHN_MESG,
 408                 "next=%p  child=%p  parent=%p  owner=%p  class='%s'\n"
 409                 "inst=%p  active=%p  idmenu=%08lx\n"
 410                 "style=%08lx  exstyle=%08lx  wndproc=%08lx  text='%s'\n"
 411                 "client=%ld,%ld-%ld,%ld  window=%ld,%ld-%ld,%ld sysmenu=%p\n",
 412                 GetWindow(hWnd, GW_HWNDNEXT),
 413                 GetWindow(hWnd, GW_CHILD),
 414                 GetParent(hWnd),
 415                 GetWindow(hWnd, GW_OWNER),
 416                 clsName,
 417                 (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE),
 418                 GetLastActivePopup(hWnd),
 419                 GetWindowLong(hWnd, GWL_ID),
 420                 GetWindowLong(hWnd, GWL_STYLE),
 421                 GetWindowLong(hWnd, GWL_EXSTYLE),
 422                 GetWindowLong(hWnd, GWL_WNDPROC),
 423                 wndName,
 424                 clientRect.left, clientRect.top, clientRect.right, clientRect.bottom,
 425                 windowRect.left, windowRect.top, windowRect.right, windowRect.bottom,
 426                 GetSystemMenu(hWnd, FALSE));
 427
 428     if (GetClassLong(hWnd, GCL_CBWNDEXTRA)) {
 429         DEBUG_Printf(DBG_CHN_MESG,  "Extra bytes:" );
 430         for (i = 0; i < GetClassLong(hWnd, GCL_CBWNDEXTRA) / 2; i++) {
 431            w = GetWindowWord(hWnd, i * 2);
 432            /* FIXME: depends on i386 endian-ity */
 433            DEBUG_Printf(DBG_CHN_MESG, " %02x", HIBYTE(w));
 434            DEBUG_Printf(DBG_CHN_MESG, " %02x", LOBYTE(w));
 435         }
 436         DEBUG_Printf(DBG_CHN_MESG, "\n");
 437     }
 438     DEBUG_Printf(DBG_CHN_MESG, "\n");
 439 }
 440
 441 void DEBUG_WalkWindows(HWND hWnd, int indent)
 442 {
 443    char clsName[128];
 444    char wndName[128];
 445    HWND child;
 446
 447    if (!IsWindow(hWnd))
 448       hWnd = GetDesktopWindow();
 449
 450     if (!indent)  /* first time around */
 451        DEBUG_Printf(DBG_CHN_MESG,
 452                     "%-16.16s %-17.17s %-8.8s %s\n",
 453                     "hwnd", "Class Name", " Style", " WndProc Text");
 454
 455     do {
 456        if (!GetClassName(hWnd, clsName, sizeof(clsName)))
 457           strcpy(clsName, "-- Unknown --");
 458        if (!GetWindowText(hWnd, wndName, sizeof(wndName)))
 459           strcpy(wndName, "-- Empty --");
 460
 461        /* FIXME: missing hmemTaskQ */
 462        DEBUG_Printf(DBG_CHN_MESG, "%*s%04x%*s", indent, "", (UINT)hWnd, 13-indent,"");
 463        DEBUG_Printf(DBG_CHN_MESG, "%-17.17s %08lx %08lx %.14s\n",
 464                     clsName, GetWindowLong(hWnd, GWL_STYLE),
 465                     GetWindowLong(hWnd, GWL_WNDPROC), wndName);
 466
 467        if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
 468           DEBUG_WalkWindows(child, indent + 1 );
 469     } while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
 470 }
 471
 472 void DEBUG_WalkProcess(void)
 473 {
 474     HANDLE snap = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );
 475     if (snap != INVALID_HANDLE_VALUE)
 476     {
 477         PROCESSENTRY32 entry;
 478         DWORD current = DEBUG_CurrProcess ? DEBUG_CurrProcess->pid : 0;
 479         BOOL ok;
 480
 481         entry.dwSize = sizeof(entry);
 482         ok = Process32First( snap, &entry );
 483
 484         DEBUG_Printf(DBG_CHN_MESG, " %-8.8s %-8.8s %-8.8s %s\n",
 485                      "pid", "threads", "parent", "executable" );
 486         while (ok)
 487         {
 488             if (entry.th32ProcessID != GetCurrentProcessId())
 489                 DEBUG_Printf(DBG_CHN_MESG, "%c%08lx %-8ld %08lx '%s'\n",
 490                              (entry.th32ProcessID == current) ? '>' : ' ',
 491                              entry.th32ProcessID, entry.cntThreads,
 492                              entry.th32ParentProcessID, entry.szExeFile);
 493             ok = Process32Next( snap, &entry );
 494         }
 495         CloseHandle( snap );
 496     }
 497 }
 498
 499 void DEBUG_WalkThreads(void)
 500 {
 501     HANDLE snap = CreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 );
 502     if (snap != INVALID_HANDLE_VALUE)
 503     {
 504         THREADENTRY32   entry;
 505         DWORD           current = DEBUG_CurrThread ? DEBUG_CurrThread->tid : 0;
 506         BOOL            ok;
 507         DWORD           lastProcessId = 0;
 508
 509         entry.dwSize = sizeof(entry);
 510         ok = Thread32First( snap, &entry );
 511
 512         DEBUG_Printf(DBG_CHN_MESG, "%-8.8s %-8.8s %s\n", "process", "tid", "prio" );
 513         while (ok)
 514         {
 515             if (entry.th32OwnerProcessID != GetCurrentProcessId())
 516             {
 517                 /* FIXME: this assumes that, in the snapshot, all threads of a same process are
 518                  * listed sequentially, which is not specified in the doc (Wine's implementation
 519                  * does it)
 520                  */
 521                 if (entry.th32OwnerProcessID != lastProcessId)
 522                 {
 523                     DBG_PROCESS*        p = DEBUG_GetProcess(entry.th32OwnerProcessID);
 524
 525                     DEBUG_Printf(DBG_CHN_MESG, "%08lx%s %s\n",
 526                                  entry.th32OwnerProcessID,  p ? " (D)" : "", p ? p->imageName : "");
 527                     lastProcessId = entry.th32OwnerProcessID;
 528                 }
 529                 DEBUG_Printf(DBG_CHN_MESG, "\t%08lx %4ld%s\n",
 530                              entry.th32ThreadID, entry.tpBasePri,
 531                              (entry.th32ThreadID == current) ? " <==" : "");
 532
 533             }
 534             ok = Thread32Next( snap, &entry );
 535         }
 536
 537         CloseHandle( snap );
 538     }
 539 }
 540
 541 void DEBUG_WalkModref(DWORD p)
 542 {
 543    DEBUG_Printf(DBG_CHN_MESG, "No longer walking module references list\n");
 544 }
 545
 546 /***********************************************************************
 547  *           DEBUG_WalkExceptions
 548  *
 549  * Walk the exception frames of a given thread.
 550  */
 551 void DEBUG_WalkExceptions(DWORD tid)
 552 {
 553     DBG_THREAD * thread;
 554     void *next_frame;
 555
 556     DEBUG_Printf( DBG_CHN_MESG, "Exception frames:\n" );
 557
 558     if (tid == DEBUG_CurrTid) thread = DEBUG_CurrThread;
 559     else
 560     {
 561          thread = DEBUG_GetThread(DEBUG_CurrProcess, tid);
 562
 563          if (!thread)
 564          {
 565               DEBUG_Printf( DBG_CHN_MESG, "Unknown thread id (0x%08lx) in current process\n", tid);
 566               return;
 567          }
 568          if (SuspendThread( thread->handle ) == -1)
 569          {
 570               DEBUG_Printf( DBG_CHN_MESG, "Can't suspend thread id (0x%08lx)\n", tid);
 571               return;
 572          }
 573     }
 574
 575     if (!DEBUG_READ_MEM(thread->teb, &next_frame, sizeof(next_frame)))
 576     {
 577         DEBUG_Printf( DBG_CHN_MESG, "Can't read TEB:except_frame\n");
 578         return;
 579     }
 580
 581     while (next_frame != (void *)-1)
 582     {
 583         EXCEPTION_FRAME frame;
 584
 585         DEBUG_Printf( DBG_CHN_MESG, "%p: ", next_frame );
 586         if (!DEBUG_READ_MEM(next_frame, &frame, sizeof(frame)))
 587         {
 588             DEBUG_Printf( DBG_CHN_MESG, "Invalid frame address\n" );
 589             break;
 590         }
 591         DEBUG_Printf( DBG_CHN_MESG, "prev=%p handler=%p\n", frame.Prev, frame.Handler );
 592         next_frame = frame.Prev;
 593     }
 594
 595     if (tid != DEBUG_CurrTid) ResumeThread( thread->handle );
 596 }
 597
 598
 599 void DEBUG_InfoSegments(DWORD start, int length)
 600 {
 601     char        flags[3];
 602     DWORD       i;
 603     LDT_ENTRY   le;
 604
 605     if (length == -1) length = (8192 - start);
 606
 607     for (i = start; i < start + length; i++)
 608     {
 609        if (!GetThreadSelectorEntry(DEBUG_CurrThread->handle, (i << 3)|7, &le))
 610           continue;
 611
 612         if (le.HighWord.Bits.Type & 0x08)
 613         {
 614             flags[0] = (le.HighWord.Bits.Type & 0x2) ? 'r' : '-';
 615             flags[1] = '-';
 616             flags[2] = 'x';
 617         }
 618         else
 619         {
 620             flags[0] = 'r';
 621             flags[1] = (le.HighWord.Bits.Type & 0x2) ? 'w' : '-';
 622             flags[2] = '-';
 623         }
 624         DEBUG_Printf(DBG_CHN_MESG,
 625                      "%04lx: sel=%04lx base=%08x limit=%08x %d-bit %c%c%c\n",
 626                      i, (i<<3)|7,
 627                      (le.HighWord.Bits.BaseHi << 24) +
 628                      (le.HighWord.Bits.BaseMid << 16) + le.BaseLow,
 629                      ((le.HighWord.Bits.LimitHi << 8) + le.LimitLow) <<
 630                      (le.HighWord.Bits.Granularity ? 12 : 0),
 631                      le.HighWord.Bits.Default_Big ? 32 : 16,
 632                      flags[0], flags[1], flags[2] );
 633     }
 634 }
 635
 636 void DEBUG_InfoVirtual(void)
 637 {
 638     MEMORY_BASIC_INFORMATION    mbi;
 639     char*                       addr = 0;
 640     char*                       state;
 641     char*                       type;
 642     char                        prot[3+1];
 643
 644     if (DEBUG_CurrProcess == NULL)
 645         return;
 646
 647     DEBUG_Printf(DBG_CHN_MESG, "Address  Size     State   Type    RWX\n");
 648
 649     while (VirtualQueryEx(DEBUG_CurrProcess->handle, addr, &mbi, sizeof(mbi)) >= sizeof(mbi))
 650     {
 651         switch (mbi.State)
 652         {
 653         case MEM_COMMIT:        state = "commit "; break;
 654         case MEM_FREE:          state = "free   "; break;
 655         case MEM_RESERVE:       state = "reserve"; break;
 656         default:                state = "???    "; break;
 657         }
 658         if (mbi.State != MEM_FREE)
 659         {
 660             switch (mbi.Type)
 661             {
 662             case MEM_IMAGE:         type = "image  "; break;
 663             case MEM_MAPPED:        type = "mapped "; break;
 664             case MEM_PRIVATE:       type = "private"; break;
 665             case 0:                 type = "       "; break;
 666             default:                type = "???    "; break;
 667             }
 668             memset(prot, ' ' , sizeof(prot)-1);
 669             prot[sizeof(prot)-1] = '\0';
 670             if (mbi.AllocationProtect & (PAGE_READONLY|PAGE_READWRITE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
 671                 prot[0] = 'R';
 672             if (mbi.AllocationProtect & (PAGE_READWRITE|PAGE_EXECUTE_READWRITE))
 673                 prot[1] = 'W';
 674             if (mbi.AllocationProtect & (PAGE_WRITECOPY|PAGE_EXECUTE_WRITECOPY))
 675                 prot[1] = 'C';
 676             if (mbi.AllocationProtect & (PAGE_EXECUTE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
 677                 prot[2] = 'X';
 678         }
 679         else
 680         {
 681             type = "";
 682             prot[0] = '\0';
 683         }
 684         DEBUG_Printf(DBG_CHN_MESG, "%08lx %08lx %s %s %s\n",
 685                      (DWORD)addr, mbi.RegionSize, state, type, prot);
 686         if (addr + mbi.RegionSize < addr) /* wrap around ? */
 687             break;
 688         addr += mbi.RegionSize;
 689     }
 690 }
 691
 692 struct dll_option_layout
 693 {
 694     void*               next;
 695     void*               prev;
 696     char* const*        channels;
 697     int                 nb_channels;
 698 };
 699
 700 void DEBUG_DbgChannel(BOOL turn_on, const char* chnl, const char* name)
 701 {
 702     DBG_VALUE                   val;
 703     struct dll_option_layout    dol;
 704     int                         i;
 705     char*                       str;
 706     unsigned char               buffer[32];
 707     unsigned char               mask;
 708     int                         done = 0;
 709     BOOL                        bAll;
 710     void*                       addr;
 711
 712     if (DEBUG_GetSymbolValue("first_dll", -1, &val, FALSE) != gsv_found)
 713     {
 714         DEBUG_Printf(DBG_CHN_MESG, "Can't get first_option symbol");
 715         return;
 716     }
 717     addr = (void*)DEBUG_ToLinear(&val.addr);
 718     if (!chnl)                          mask = 15;
 719     else if (!strcmp(chnl, "fixme"))    mask = 1;
 720     else if (!strcmp(chnl, "err"))      mask = 2;
 721     else if (!strcmp(chnl, "warn"))     mask = 4;
 722     else if (!strcmp(chnl, "trace"))    mask = 8;
 723     else { DEBUG_Printf(DBG_CHN_MESG, "Unknown channel %s\n", chnl); return; }
 724
 725     bAll = !strcmp("all", name);
 726     while (addr && DEBUG_READ_MEM(addr, &dol, sizeof(dol)))
 727     {
 728         for (i = 0; i < dol.nb_channels; i++)
 729         {
 730             if (DEBUG_READ_MEM((void*)(dol.channels + i), &str, sizeof(str)) &&
 731                 DEBUG_READ_MEM(str, buffer, sizeof(buffer)) &&
 732                 (!strcmp(buffer + 1, name) || bAll))
 733             {
 734                 if (turn_on) buffer[0] |= mask; else buffer[0] &= ~mask;
 735                 if (DEBUG_WRITE_MEM(str, buffer, 1)) done++;
 736             }
 737         }
 738         addr = dol.next;
 739     }
 740     if (!done) DEBUG_Printf(DBG_CHN_MESG, "Unable to find debug channel %s\n", name);
 741     else DEBUG_Printf(DBG_CHN_TRACE, "Changed %d channel instances\n", done);
 742 }