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
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <stdarg.h>
  27
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "wingdi.h"
  31 #include "winuser.h"
  32 #include "tlhelp32.h"
  33 #include "debugger.h"
  34 #include "expr.h"
  35
  36 /***********************************************************************
  37  *           DEBUG_PrintBasic
  38  *
  39  * Implementation of the 'print' command.
  40  */
  41 void DEBUG_PrintBasic( const DBG_VALUE* value, int count, char format )
  42 {
  43     char        * default_format;
  44     long long int res;
  45
  46     assert(value->cookie == DV_TARGET || value->cookie == DV_HOST);
  47     if (value->type == NULL)
  48     {
  49         DEBUG_Printf(DBG_CHN_MESG, "Unable to evaluate expression\n");
  50         return;
  51     }
  52
  53     default_format = NULL;
  54     res = DEBUG_GetExprValue(value, &default_format);
  55
  56     switch (format)
  57     {
  58     case 'x':
  59         if (value->addr.seg)
  60         {
  61             DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "0x%04lx", (long unsigned int)res);
  62         }
  63         else
  64         {
  65             DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "0x%08lx", (long unsigned int)res);
  66         }
  67         break;
  68
  69     case 'd':
  70         DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%ld\n", (long int)res);
  71         break;
  72
  73     case 'c':
  74         DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%d = '%c'",
  75                                     (char)(res & 0xff), (char)(res & 0xff));
  76         break;
  77
  78     case 'u':
  79     {
  80         WCHAR wch = (WCHAR)(res & 0xFFFF);
  81         DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%d = '", (unsigned)(res & 0xffff));
  82         DEBUG_OutputW(DBG_CHN_MESG, &wch, 1);
  83         DEBUG_Printf(DBG_CHN_MESG, "'");
  84     }
  85     break;
  86
  87     case 'i':
  88     case 's':
  89     case 'w':
  90     case 'b':
  91         DEBUG_Printf(DBG_CHN_MESG, "Format specifier '%c' is meaningless in 'print' command\n", format);
  92     case 0:
  93         if (default_format == NULL) break;
  94
  95         if (strstr(default_format, "%S") != NULL)
  96         {
  97             char*       ptr;
  98             int state = 0;
  99
 100             /* FIXME: simplistic implementation for default_format being
 101              * foo%Sbar => will print foo, then string then bar
 102              */
 103             for (ptr = default_format; *ptr; ptr++)
 104             {
 105                 if (*ptr == '%')
 106                 {
 107                     state++;
 108                 }
 109                 else if (state == 1)
 110                 {
 111                     if (*ptr == 'S')
 112                     {
 113                         DBG_ADDR    addr;
 114
 115                         addr.seg = 0;
 116                         addr.off = (long)res;
 117                         DEBUG_nchar += DEBUG_PrintStringA(DBG_CHN_MESG, &addr, -1);
 118                     }
 119                     else
 120                     {
 121                         /* shouldn't happen */
 122                         DEBUG_Printf(DBG_CHN_MESG, "%%%c", *ptr);
 123                         DEBUG_nchar += 2;
 124                     }
 125                     state = 0;
 126                 }
 127                 else
 128                 {
 129                     DEBUG_OutputA(DBG_CHN_MESG, ptr, 1);
 130                     DEBUG_nchar++;
 131                 }
 132             }
 133         }
 134         else if (strcmp(default_format, "%B") == 0)
 135         {
 136             DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, "%s", res ? "true" : "false");
 137         }
 138         else if (strcmp(default_format, "%R") == 0)
 139         {
 140             if (value->cookie == DV_HOST)
 141                 DEBUG_InfoRegisters((CONTEXT*)value->addr.off);
 142             else
 143                 DEBUG_Printf(DBG_CHN_MESG, "NIY: info on register struct in debuggee address space\n");
 144             DEBUG_nchar = 0;
 145         }
 146         else
 147         {
 148             DEBUG_nchar += DEBUG_Printf(DBG_CHN_MESG, default_format, res);
 149         }
 150         break;
 151     }
 152 }
 153
 154
 155 /***********************************************************************
 156  *           DEBUG_PrintAddress
 157  *
 158  * Print an 16- or 32-bit address, with the nearest symbol if any.
 159  */
 160 struct symbol_info
 161 DEBUG_PrintAddress( const DBG_ADDR *addr, enum dbg_mode mode, int flag )
 162 {
 163     struct symbol_info rtn;
 164
 165     const char *name = DEBUG_FindNearestSymbol( addr, flag, &rtn.sym, 0,
 166                                                 &rtn.list );
 167
 168     if (addr->seg) DEBUG_Printf( DBG_CHN_MESG, "0x%04lx:", addr->seg&0xFFFF );
 169     if (mode != MODE_32) DEBUG_Printf( DBG_CHN_MESG, "0x%04lx", addr->off );
 170     else DEBUG_Printf( DBG_CHN_MESG, "0x%08lx", addr->off );
 171     if (name) DEBUG_Printf( DBG_CHN_MESG, " (%s)", name );
 172     return rtn;
 173 }
 174 /***********************************************************************
 175  *           DEBUG_PrintAddressAndArgs
 176  *
 177  * Print an 16- or 32-bit address, with the nearest symbol if any.
 178  * Similar to DEBUG_PrintAddress, but we print the arguments to
 179  * each function (if known).  This is useful in a backtrace.
 180  */
 181 struct symbol_info
 182 DEBUG_PrintAddressAndArgs( const DBG_ADDR *addr, enum dbg_mode mode,
 183                            unsigned int ebp, int flag )
 184 {
 185     struct symbol_info rtn;
 186
 187     const char *name = DEBUG_FindNearestSymbol( addr, flag, &rtn.sym, ebp,
 188                                                 &rtn.list );
 189
 190     if (addr->seg) DEBUG_Printf( DBG_CHN_MESG, "0x%04lx:", addr->seg );
 191     if (mode != MODE_32) DEBUG_Printf( DBG_CHN_MESG, "0x%04lx", addr->off );
 192     else DEBUG_Printf( DBG_CHN_MESG, "0x%08lx", addr->off );
 193     if (name) DEBUG_Printf( DBG_CHN_MESG, " (%s)", name );
 194
 195     return rtn;
 196 }
 197
 198
 199 /***********************************************************************
 200  *           DEBUG_Help
 201  *
 202  * Implementation of the 'help' command.
 203  */
 204 void DEBUG_Help(void)
 205 {
 206     int i = 0;
 207     static const char * const helptext[] =
 208 {
 209 "The commands accepted by the Wine debugger are a reasonable",
 210 "subset of the commands that gdb accepts.",
 211 "The commands currently are:",
 212 "  help                                   quit",
 213 "  break [*<addr>]                        watch *<addr>",
 214 "  delete break bpnum                     disable bpnum",
 215 "  enable bpnum                           condition <bpnum> [<expr>]",
 216 "  finish                                 cont [N]",
 217 "  step [N]                               next [N]",
 218 "  stepi [N]                              nexti [N]",
 219 "  x <addr>                               print <expr>",
 220 "  display <expr>                         undisplay <disnum>",
 221 "  delete display <disnum>                pass",
 222 "  bt                                     frame <n>",
 223 "  up                                     down",
 224 "  list <lines>                           disassemble [<addr>][,<addr>]",
 225 "  show dir                               dir <path>",
 226 "  set <reg> = <expr>                     set *<addr> = <expr>",
 227 "  mode [16,32,vm86]                      walk [wnd,class,module,maps,",
 228 "  whatis                                       process,thread,exception]",
 229 "  info (see 'help info' for options)",
 230
 231 "The 'x' command accepts repeat counts and formats (including 'i') in the",
 232 "same way that gdb does.\n",
 233
 234 " The following are examples of legal expressions:",
 235 " $eax     $eax+0x3   0x1000   ($eip + 256)  *$eax   *($esp + 3)",
 236 " Also, a nm format symbol table can be read from a file using the",
 237 " symbolfile command.  Symbols can also be defined individually with",
 238 " the define command.",
 239 "",
 240 NULL
 241 };
 242
 243     while(helptext[i]) DEBUG_Printf(DBG_CHN_MESG,"%s\n", helptext[i++]);
 244 }
 245
 246
 247 /***********************************************************************
 248  *           DEBUG_HelpInfo
 249  *
 250  * Implementation of the 'help info' command.
 251  */
 252 void DEBUG_HelpInfo(void)
 253 {
 254     int i = 0;
 255     static const char * const infotext[] =
 256 {
 257 "The info commands allow you to get assorted bits of interesting stuff",
 258 "to be displayed.  The options are:",
 259 "  info break           Dumps information about breakpoints",
 260 "  info display         Shows auto-display expressions in use",
 261 "  info locals          Displays values of all local vars for current frame",
 262 "  info module <handle> Displays internal module state",
 263 "  info reg             Displays values in all registers at top of stack",
 264 "  info segments        Dumps information about all known segments",
 265 "  info share           Dumps information about shared libraries",
 266 "  info stack           Dumps information about top of stack",
 267 "  info wnd <handle>    Displays internal window state",
 268 "",
 269 NULL
 270 };
 271
 272     while(infotext[i]) DEBUG_Printf(DBG_CHN_MESG,"%s\n", infotext[i++]);
 273 }
 274
 275 /* FIXME: merge InfoClass and InfoClass2 */
 276 void DEBUG_InfoClass(const char* name)
 277 {
 278    WNDCLASSEXA  wca;
 279
 280    if (!GetClassInfoEx(0, name, &wca)) {
 281       DEBUG_Printf(DBG_CHN_MESG, "Cannot find class '%s'\n", name);
 282       return;
 283    }
 284
 285    DEBUG_Printf(DBG_CHN_MESG,  "Class '%s':\n", name);
 286    DEBUG_Printf(DBG_CHN_MESG,
 287                 "style=%08x  wndProc=%08lx\n"
 288                 "inst=%p  icon=%p  cursor=%p  bkgnd=%p\n"
 289                 "clsExtra=%d  winExtra=%d\n",
 290                 wca.style, (DWORD)wca.lpfnWndProc, wca.hInstance,
 291                 wca.hIcon, wca.hCursor, wca.hbrBackground,
 292                 wca.cbClsExtra, wca.cbWndExtra);
 293
 294    /* FIXME:
 295     * + print #windows (or even list of windows...)
 296     * + print extra bytes => this requires a window handle on this very class...
 297     */
 298 }
 299
 300 static  void DEBUG_InfoClass2(HWND hWnd, const char* name)
 301 {
 302    WNDCLASSEXA  wca;
 303
 304    if (!GetClassInfoEx((HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE), name, &wca)) {
 305       DEBUG_Printf(DBG_CHN_MESG, "Cannot find class '%s'\n", name);
 306       return;
 307    }
 308
 309    DEBUG_Printf(DBG_CHN_MESG,  "Class '%s':\n", name);
 310    DEBUG_Printf(DBG_CHN_MESG,
 311                 "style=%08x  wndProc=%08lx\n"
 312                 "inst=%p  icon=%p  cursor=%p  bkgnd=%p\n"
 313                 "clsExtra=%d  winExtra=%d\n",
 314                 wca.style, (DWORD)wca.lpfnWndProc, wca.hInstance,
 315                 wca.hIcon, wca.hCursor, wca.hbrBackground,
 316                 wca.cbClsExtra, wca.cbWndExtra);
 317
 318    if (wca.cbClsExtra) {
 319       int               i;
 320       WORD              w;
 321
 322       DEBUG_Printf(DBG_CHN_MESG,  "Extra bytes:" );
 323       for (i = 0; i < wca.cbClsExtra / 2; i++) {
 324          w = GetClassWord(hWnd, i * 2);
 325          /* FIXME: depends on i386 endian-ity */
 326          DEBUG_Printf(DBG_CHN_MESG,  " %02x", HIBYTE(w));
 327          DEBUG_Printf(DBG_CHN_MESG,  " %02x", LOBYTE(w));
 328       }
 329       DEBUG_Printf(DBG_CHN_MESG,  "\n" );
 330     }
 331     DEBUG_Printf(DBG_CHN_MESG,  "\n" );
 332 }
 333
 334 struct class_walker {
 335    ATOM*        table;
 336    int          used;
 337    int          alloc;
 338 };
 339
 340 static  void DEBUG_WalkClassesHelper(HWND hWnd, struct class_walker* cw)
 341 {
 342    char clsName[128];
 343    int  i;
 344    ATOM atom;
 345    HWND child;
 346
 347    if (!GetClassName(hWnd, clsName, sizeof(clsName)))
 348       return;
 349    if ((atom = FindAtom(clsName)) == 0)
 350       return;
 351
 352    for (i = 0; i < cw->used; i++) {
 353       if (cw->table[i] == atom)
 354          break;
 355    }
 356    if (i == cw->used) {
 357       if (cw->used >= cw->alloc) {
 358          cw->alloc += 16;
 359          cw->table = DBG_realloc(cw->table, cw->alloc * sizeof(ATOM));
 360       }
 361       cw->table[cw->used++] = atom;
 362       DEBUG_InfoClass2(hWnd, clsName);
 363    }
 364    do {
 365       if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
 366          DEBUG_WalkClassesHelper(child, cw);
 367    } while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
 368 }
 369
 370 void DEBUG_WalkClasses(void)
 371 {
 372    struct class_walker cw;
 373
 374    cw.table = NULL;
 375    cw.used = cw.alloc = 0;
 376    DEBUG_WalkClassesHelper(GetDesktopWindow(), &cw);
 377    DBG_free(cw.table);
 378 }
 379
 380 void DEBUG_InfoWindow(HWND hWnd)
 381 {
 382    char clsName[128];
 383    char wndName[128];
 384    RECT clientRect;
 385    RECT windowRect;
 386    int  i;
 387    WORD w;
 388
 389    if (!GetClassName(hWnd, clsName, sizeof(clsName)))
 390        strcpy(clsName, "-- Unknown --");
 391    if (!GetWindowText(hWnd, wndName, sizeof(wndName)))
 392       strcpy(wndName, "-- Empty --");
 393    if (!GetClientRect(hWnd, &clientRect))
 394       SetRectEmpty(&clientRect);
 395    if (!GetWindowRect(hWnd, &windowRect))
 396       SetRectEmpty(&windowRect);
 397
 398    /* FIXME missing fields: hmemTaskQ, hrgnUpdate, dce, flags, pProp, scroll */
 399    DEBUG_Printf(DBG_CHN_MESG,
 400                 "next=%p  child=%p  parent=%p  owner=%p  class='%s'\n"
 401                 "inst=%p  active=%p  idmenu=%08lx\n"
 402                 "style=%08lx  exstyle=%08lx  wndproc=%08lx  text='%s'\n"
 403                 "client=%ld,%ld-%ld,%ld  window=%ld,%ld-%ld,%ld sysmenu=%p\n",
 404                 GetWindow(hWnd, GW_HWNDNEXT),
 405                 GetWindow(hWnd, GW_CHILD),
 406                 GetParent(hWnd),
 407                 GetWindow(hWnd, GW_OWNER),
 408                 clsName,
 409                 (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE),
 410                 GetLastActivePopup(hWnd),
 411                 GetWindowLong(hWnd, GWL_ID),
 412                 GetWindowLong(hWnd, GWL_STYLE),
 413                 GetWindowLong(hWnd, GWL_EXSTYLE),
 414                 GetWindowLong(hWnd, GWL_WNDPROC),
 415                 wndName,
 416                 clientRect.left, clientRect.top, clientRect.right, clientRect.bottom,
 417                 windowRect.left, windowRect.top, windowRect.right, windowRect.bottom,
 418                 GetSystemMenu(hWnd, FALSE));
 419
 420     if (GetClassLong(hWnd, GCL_CBWNDEXTRA)) {
 421         DEBUG_Printf(DBG_CHN_MESG,  "Extra bytes:" );
 422         for (i = 0; i < GetClassLong(hWnd, GCL_CBWNDEXTRA) / 2; i++) {
 423            w = GetWindowWord(hWnd, i * 2);
 424            /* FIXME: depends on i386 endian-ity */
 425            DEBUG_Printf(DBG_CHN_MESG, " %02x", HIBYTE(w));
 426            DEBUG_Printf(DBG_CHN_MESG, " %02x", LOBYTE(w));
 427         }
 428         DEBUG_Printf(DBG_CHN_MESG, "\n");
 429     }
 430     DEBUG_Printf(DBG_CHN_MESG, "\n");
 431 }
 432
 433 void DEBUG_WalkWindows(HWND hWnd, int indent)
 434 {
 435    char clsName[128];
 436    char wndName[128];
 437    HWND child;
 438
 439    if (!IsWindow(hWnd))
 440       hWnd = GetDesktopWindow();
 441
 442     if (!indent)  /* first time around */
 443        DEBUG_Printf(DBG_CHN_MESG,
 444                     "%-16.16s %-17.17s %-8.8s %s\n",
 445                     "hwnd", "Class Name", " Style", " WndProc Text");
 446
 447     do {
 448        if (!GetClassName(hWnd, clsName, sizeof(clsName)))
 449           strcpy(clsName, "-- Unknown --");
 450        if (!GetWindowText(hWnd, wndName, sizeof(wndName)))
 451           strcpy(wndName, "-- Empty --");
 452
 453        /* FIXME: missing hmemTaskQ */
 454        DEBUG_Printf(DBG_CHN_MESG, "%*s%04x%*s", indent, "", (UINT)hWnd, 13-indent,"");
 455        DEBUG_Printf(DBG_CHN_MESG, "%-17.17s %08lx %08lx %.14s\n",
 456                     clsName, GetWindowLong(hWnd, GWL_STYLE),
 457                     GetWindowLong(hWnd, GWL_WNDPROC), wndName);
 458
 459        if ((child = GetWindow(hWnd, GW_CHILD)) != 0)
 460           DEBUG_WalkWindows(child, indent + 1 );
 461     } while ((hWnd = GetWindow(hWnd, GW_HWNDNEXT)) != 0);
 462 }
 463
 464 void DEBUG_WalkProcess(void)
 465 {
 466     HANDLE snap = CreateToolhelp32Snapshot( TH32CS_SNAPPROCESS, 0 );
 467     if (snap != INVALID_HANDLE_VALUE)
 468     {
 469         PROCESSENTRY32 entry;
 470         DWORD current = DEBUG_CurrProcess ? DEBUG_CurrProcess->pid : 0;
 471         BOOL ok;
 472
 473         entry.dwSize = sizeof(entry);
 474         ok = Process32First( snap, &entry );
 475
 476         DEBUG_Printf(DBG_CHN_MESG, " %-8.8s %-8.8s %-8.8s %s\n",
 477                      "pid", "threads", "parent", "executable" );
 478         while (ok)
 479         {
 480             if (entry.th32ProcessID != GetCurrentProcessId())
 481                 DEBUG_Printf(DBG_CHN_MESG, "%c%08lx %-8ld %08lx '%s'\n",
 482                              (entry.th32ProcessID == current) ? '>' : ' ',
 483                              entry.th32ProcessID, entry.cntThreads,
 484                              entry.th32ParentProcessID, entry.szExeFile);
 485             ok = Process32Next( snap, &entry );
 486         }
 487         CloseHandle( snap );
 488     }
 489 }
 490
 491 void DEBUG_WalkThreads(void)
 492 {
 493     HANDLE snap = CreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 );
 494     if (snap != INVALID_HANDLE_VALUE)
 495     {
 496         THREADENTRY32   entry;
 497         DWORD           current = DEBUG_CurrThread ? DEBUG_CurrThread->tid : 0;
 498         BOOL            ok;
 499         DWORD           lastProcessId = 0;
 500
 501         entry.dwSize = sizeof(entry);
 502         ok = Thread32First( snap, &entry );
 503
 504         DEBUG_Printf(DBG_CHN_MESG, "%-8.8s %-8.8s %s\n", "process", "tid", "prio" );
 505         while (ok)
 506         {
 507             if (entry.th32OwnerProcessID != GetCurrentProcessId())
 508             {
 509                 /* FIXME: this assumes that, in the snapshot, all threads of a same process are
 510                  * listed sequentially, which is not specified in the doc (Wine's implementation
 511                  * does it)
 512                  */
 513                 if (entry.th32OwnerProcessID != lastProcessId)
 514                 {
 515                     DBG_PROCESS*        p = DEBUG_GetProcess(entry.th32OwnerProcessID);
 516
 517                     DEBUG_Printf(DBG_CHN_MESG, "%08lx%s %s\n",
 518                                  entry.th32OwnerProcessID,  p ? " (D)" : "", p ? p->imageName : "");
 519                     lastProcessId = entry.th32OwnerProcessID;
 520                 }
 521                 DEBUG_Printf(DBG_CHN_MESG, "\t%08lx %4ld%s\n",
 522                              entry.th32ThreadID, entry.tpBasePri,
 523                              (entry.th32ThreadID == current) ? " <==" : "");
 524
 525             }
 526             ok = Thread32Next( snap, &entry );
 527         }
 528
 529         CloseHandle( snap );
 530     }
 531 }
 532
 533 /***********************************************************************
 534  *           DEBUG_WalkExceptions
 535  *
 536  * Walk the exception frames of a given thread.
 537  */
 538 void DEBUG_WalkExceptions(DWORD tid)
 539 {
 540     DBG_THREAD * thread;
 541     void *next_frame;
 542
 543     if (!DEBUG_CurrProcess || !DEBUG_CurrThread)
 544     {
 545         DEBUG_Printf(DBG_CHN_MESG,
 546                      "Cannot walk exceptions while no process is loaded\n");
 547         return;
 548     }
 549
 550     DEBUG_Printf( DBG_CHN_MESG, "Exception frames:\n" );
 551
 552     if (tid == DEBUG_CurrTid) thread = DEBUG_CurrThread;
 553     else
 554     {
 555          thread = DEBUG_GetThread(DEBUG_CurrProcess, tid);
 556
 557          if (!thread)
 558          {
 559               DEBUG_Printf( DBG_CHN_MESG, "Unknown thread id (0x%08lx) in current process\n", tid);
 560               return;
 561          }
 562          if (SuspendThread( thread->handle ) == -1)
 563          {
 564               DEBUG_Printf( DBG_CHN_MESG, "Can't suspend thread id (0x%08lx)\n", tid);
 565               return;
 566          }
 567     }
 568
 569     if (!DEBUG_READ_MEM(thread->teb, &next_frame, sizeof(next_frame)))
 570     {
 571         DEBUG_Printf( DBG_CHN_MESG, "Can't read TEB:except_frame\n");
 572         return;
 573     }
 574
 575     while (next_frame != (void *)-1)
 576     {
 577         EXCEPTION_REGISTRATION_RECORD frame;
 578
 579         DEBUG_Printf( DBG_CHN_MESG, "%p: ", next_frame );
 580         if (!DEBUG_READ_MEM(next_frame, &frame, sizeof(frame)))
 581         {
 582             DEBUG_Printf( DBG_CHN_MESG, "Invalid frame address\n" );
 583             break;
 584         }
 585         DEBUG_Printf( DBG_CHN_MESG, "prev=%p handler=%p\n", frame.Prev, frame.Handler );
 586         next_frame = frame.Prev;
 587     }
 588
 589     if (tid != DEBUG_CurrTid) ResumeThread( thread->handle );
 590 }
 591
 592
 593 void DEBUG_InfoSegments(DWORD start, int length)
 594 {
 595     char        flags[3];
 596     DWORD       i;
 597     LDT_ENTRY   le;
 598
 599     if (length == -1) length = (8192 - start);
 600
 601     for (i = start; i < start + length; i++)
 602     {
 603         if (!GetThreadSelectorEntry(DEBUG_CurrThread->handle, (i << 3) | 7, &le))
 604             continue;
 605
 606         if (le.HighWord.Bits.Type & 0x08)
 607         {
 608             flags[0] = (le.HighWord.Bits.Type & 0x2) ? 'r' : '-';
 609             flags[1] = '-';
 610             flags[2] = 'x';
 611         }
 612         else
 613         {
 614             flags[0] = 'r';
 615             flags[1] = (le.HighWord.Bits.Type & 0x2) ? 'w' : '-';
 616             flags[2] = '-';
 617         }
 618         DEBUG_Printf(DBG_CHN_MESG,
 619                      "%04lx: sel=%04lx base=%08x limit=%08x %d-bit %c%c%c\n",
 620                      i, (i<<3)|7,
 621                      (le.HighWord.Bits.BaseHi << 24) +
 622                      (le.HighWord.Bits.BaseMid << 16) + le.BaseLow,
 623                      ((le.HighWord.Bits.LimitHi << 8) + le.LimitLow) <<
 624                      (le.HighWord.Bits.Granularity ? 12 : 0),
 625                      le.HighWord.Bits.Default_Big ? 32 : 16,
 626                      flags[0], flags[1], flags[2] );
 627     }
 628 }
 629
 630 void DEBUG_InfoVirtual(DWORD pid)
 631 {
 632     MEMORY_BASIC_INFORMATION    mbi;
 633     char*                       addr = 0;
 634     char*                       state;
 635     char*                       type;
 636     char                        prot[3+1];
 637     HANDLE                      hProc;
 638
 639     if (pid == 0)
 640     {
 641         if (DEBUG_CurrProcess == NULL)
 642         {
 643             DEBUG_Printf(DBG_CHN_MESG,
 644                          "Cannot look at mapping of current process, while no process is loaded\n");
 645             return;
 646         }
 647         hProc = DEBUG_CurrProcess->handle;
 648     }
 649     else
 650     {
 651         hProc = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pid);
 652         if (hProc == NULL)
 653         {
 654             DEBUG_Printf(DBG_CHN_MESG, "Cannot open process <%lu>\n", pid);
 655             return;
 656         }
 657     }
 658
 659     DEBUG_Printf(DBG_CHN_MESG, "Address  Size     State   Type    RWX\n");
 660
 661     while (VirtualQueryEx(hProc, addr, &mbi, sizeof(mbi)) >= sizeof(mbi))
 662     {
 663         switch (mbi.State)
 664         {
 665         case MEM_COMMIT:        state = "commit "; break;
 666         case MEM_FREE:          state = "free   "; break;
 667         case MEM_RESERVE:       state = "reserve"; break;
 668         default:                state = "???    "; break;
 669         }
 670         if (mbi.State != MEM_FREE)
 671         {
 672             switch (mbi.Type)
 673             {
 674             case MEM_IMAGE:         type = "image  "; break;
 675             case MEM_MAPPED:        type = "mapped "; break;
 676             case MEM_PRIVATE:       type = "private"; break;
 677             case 0:                 type = "       "; break;
 678             default:                type = "???    "; break;
 679             }
 680             memset(prot, ' ' , sizeof(prot)-1);
 681             prot[sizeof(prot)-1] = '\0';
 682             if (mbi.AllocationProtect & (PAGE_READONLY|PAGE_READWRITE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
 683                 prot[0] = 'R';
 684             if (mbi.AllocationProtect & (PAGE_READWRITE|PAGE_EXECUTE_READWRITE))
 685                 prot[1] = 'W';
 686             if (mbi.AllocationProtect & (PAGE_WRITECOPY|PAGE_EXECUTE_WRITECOPY))
 687                 prot[1] = 'C';
 688             if (mbi.AllocationProtect & (PAGE_EXECUTE|PAGE_EXECUTE_READ|PAGE_EXECUTE_READWRITE))
 689                 prot[2] = 'X';
 690         }
 691         else
 692         {
 693             type = "";
 694             prot[0] = '\0';
 695         }
 696         DEBUG_Printf(DBG_CHN_MESG, "%08lx %08lx %s %s %s\n",
 697                      (DWORD)addr, mbi.RegionSize, state, type, prot);
 698         if (addr + mbi.RegionSize < addr) /* wrap around ? */
 699             break;
 700         addr += mbi.RegionSize;
 701     }
 702     if (hProc != DEBUG_CurrProcess->handle) CloseHandle(hProc);
 703 }
 704
 705 struct dll_option_layout
 706 {
 707     void*               next;
 708     void*               prev;
 709     char* const*        channels;
 710     int                 nb_channels;
 711 };
 712
 713 void DEBUG_DbgChannel(BOOL turn_on, const char* chnl, const char* name)
 714 {
 715     DBG_VALUE                   val;
 716     struct dll_option_layout    dol;
 717     int                         i;
 718     char*                       str;
 719     unsigned char               buffer[32];
 720     unsigned char               mask;
 721     int                         done = 0;
 722     BOOL                        bAll;
 723     void*                       addr;
 724
 725     if (DEBUG_GetSymbolValue("first_dll", -1, &val, FALSE) != gsv_found)
 726     {
 727         DEBUG_Printf(DBG_CHN_MESG, "Can't get first_option symbol");
 728         return;
 729     }
 730     addr = (void*)DEBUG_ToLinear(&val.addr);
 731     if (!chnl)                          mask = 15;
 732     else if (!strcmp(chnl, "fixme"))    mask = 1;
 733     else if (!strcmp(chnl, "err"))      mask = 2;
 734     else if (!strcmp(chnl, "warn"))     mask = 4;
 735     else if (!strcmp(chnl, "trace"))    mask = 8;
 736     else { DEBUG_Printf(DBG_CHN_MESG, "Unknown channel %s\n", chnl); return; }
 737
 738     bAll = !strcmp("all", name);
 739     while (addr && DEBUG_READ_MEM(addr, &dol, sizeof(dol)))
 740     {
 741         for (i = 0; i < dol.nb_channels; i++)
 742         {
 743             if (DEBUG_READ_MEM((void*)(dol.channels + i), &str, sizeof(str)) &&
 744                 DEBUG_READ_MEM(str, buffer, sizeof(buffer)) &&
 745                 (!strcmp(buffer + 1, name) || bAll))
 746             {
 747                 if (turn_on) buffer[0] |= mask; else buffer[0] &= ~mask;
 748                 if (DEBUG_WRITE_MEM(str, buffer, 1)) done++;
 749             }
 750         }
 751         addr = dol.next;
 752     }
 753     if (!done) DEBUG_Printf(DBG_CHN_MESG, "Unable to find debug channel %s\n", name);
 754     else DEBUG_Printf(DBG_CHN_TRACE, "Changed %d channel instances\n", done);
 755 }