gdb/tui/tui-data.c

   1 /* TUI data manipulation routines.
   2
   3    Copyright (C) 1998-2018 Free Software Foundation, Inc.
   4
   5    Contributed by Hewlett-Packard Company.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "symtab.h"
  24 #include "tui/tui.h"
  25 #include "tui/tui-data.h"
  26 #include "tui/tui-wingeneral.h"
  27 #include "gdb_curses.h"
  28
  29 /****************************
  30 ** GLOBAL DECLARATIONS
  31 ****************************/
  32 struct tui_win_info *tui_win_list[MAX_MAJOR_WINDOWS];
  33
  34 /***************************
  35 ** Private data
  36 ****************************/
  37 static enum tui_layout_type current_layout = UNDEFINED_LAYOUT;
  38 static int term_height, term_width;
  39 static struct tui_gen_win_info _locator;
  40 static struct tui_gen_win_info exec_info[2];
  41 static struct tui_win_info *src_win_list[2];
  42 static struct tui_list source_windows = {src_win_list, 0};
  43 static int default_tab_len = DEFAULT_TAB_LEN;
  44 static struct tui_win_info *win_with_focus = NULL;
  45 static struct tui_layout_def layout_def = {
  46   SRC_WIN,                      /* DISPLAY_MODE */
  47   FALSE};                       /* SPLIT */
  48
  49 static int win_resized = FALSE;
  50
  51
  52 /*********************************
  53 ** Static function forward decls
  54 **********************************/
  55 static void free_content (tui_win_content,
  56                           int,
  57                           enum tui_win_type);
  58 static void free_content_elements (tui_win_content,
  59                                    int,
  60                                    enum tui_win_type);
  61
  62
  63
  64 /*********************************
  65 ** PUBLIC FUNCTIONS
  66 **********************************/
  67
  68 int
  69 tui_win_is_source_type (enum tui_win_type win_type)
  70 {
  71   return (win_type == SRC_WIN || win_type == DISASSEM_WIN);
  72 }
  73
  74 int
  75 tui_win_is_auxillary (enum tui_win_type win_type)
  76 {
  77   return (win_type > MAX_MAJOR_WINDOWS);
  78 }
  79
  80 int
  81 tui_win_has_locator (struct tui_win_info *win_info)
  82 {
  83   return (win_info != NULL
  84           && win_info->detail.source_info.has_locator);
  85 }
  86
  87 void
  88 tui_set_win_highlight (struct tui_win_info *win_info,
  89                        int highlight)
  90 {
  91   if (win_info != NULL)
  92     win_info->is_highlighted = highlight;
  93 }
  94
  95 /******************************************
  96 ** ACCESSORS & MUTATORS FOR PRIVATE DATA
  97 ******************************************/
  98
  99 /* Answer a whether the terminal window has been resized or not.  */
 100 int
 101 tui_win_resized (void)
 102 {
 103   return win_resized;
 104 }
 105
 106
 107 /* Set a whether the terminal window has been resized or not.  */
 108 void
 109 tui_set_win_resized_to (int resized)
 110 {
 111   win_resized = resized;
 112 }
 113
 114
 115 /* Answer a pointer to the current layout definition.  */
 116 struct tui_layout_def *
 117 tui_layout_def (void)
 118 {
 119   return &layout_def;
 120 }
 121
 122
 123 /* Answer the window with the logical focus.  */
 124 struct tui_win_info *
 125 tui_win_with_focus (void)
 126 {
 127   return win_with_focus;
 128 }
 129
 130
 131 /* Set the window that has the logical focus.  */
 132 void
 133 tui_set_win_with_focus (struct tui_win_info *win_info)
 134 {
 135   win_with_focus = win_info;
 136 }
 137
 138
 139 /* Answer the length in chars, of tabs.  */
 140 int
 141 tui_default_tab_len (void)
 142 {
 143   return default_tab_len;
 144 }
 145
 146
 147 /* Set the length in chars, of tabs.  */
 148 void
 149 tui_set_default_tab_len (int len)
 150 {
 151   default_tab_len = len;
 152 }
 153
 154
 155 /* Accessor for the current source window.  Usually there is only one
 156    source window (either source or disassembly), but both can be
 157    displayed at the same time.  */
 158 struct tui_list *
 159 tui_source_windows (void)
 160 {
 161   return &source_windows;
 162 }
 163
 164
 165 /* Clear the list of source windows.  Usually there is only one source
 166    window (either source or disassembly), but both can be displayed at
 167    the same time.  */
 168 void
 169 tui_clear_source_windows (void)
 170 {
 171   source_windows.list[0] = NULL;
 172   source_windows.list[1] = NULL;
 173   source_windows.count = 0;
 174 }
 175
 176
 177 /* Clear the pertinant detail in the source windows.  */
 178 void
 179 tui_clear_source_windows_detail (void)
 180 {
 181   int i;
 182
 183   for (i = 0; i < (tui_source_windows ())->count; i++)
 184     tui_clear_win_detail ((tui_source_windows ())->list[i]);
 185 }
 186
 187
 188 /* Add a window to the list of source windows.  Usually there is only
 189    one source window (either source or disassembly), but both can be
 190    displayed at the same time.  */
 191 void
 192 tui_add_to_source_windows (struct tui_win_info *win_info)
 193 {
 194   if (source_windows.count < 2)
 195     source_windows.list[source_windows.count++] = win_info;
 196 }
 197
 198
 199 /* Clear the pertinant detail in the windows.  */
 200 void
 201 tui_clear_win_detail (struct tui_win_info *win_info)
 202 {
 203   if (win_info != NULL)
 204     {
 205       switch (win_info->generic.type)
 206         {
 207         case SRC_WIN:
 208         case DISASSEM_WIN:
 209           win_info->detail.source_info.gdbarch = NULL;
 210           win_info->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
 211           win_info->detail.source_info.start_line_or_addr.u.addr = 0;
 212           win_info->detail.source_info.horizontal_offset = 0;
 213           break;
 214         case CMD_WIN:
 215           wmove (win_info->generic.handle, 0, 0);
 216           break;
 217         case DATA_WIN:
 218           win_info->detail.data_display_info.data_content =
 219             (tui_win_content) NULL;
 220           win_info->detail.data_display_info.data_content_count = 0;
 221           win_info->detail.data_display_info.regs_content =
 222             (tui_win_content) NULL;
 223           win_info->detail.data_display_info.regs_content_count = 0;
 224           win_info->detail.data_display_info.regs_column_count = 1;
 225           win_info->detail.data_display_info.display_regs = FALSE;
 226           break;
 227         default:
 228           break;
 229         }
 230     }
 231 }
 232
 233
 234 /* Accessor for the source execution info ptr.  */
 235 struct tui_gen_win_info *
 236 tui_source_exec_info_win_ptr (void)
 237 {
 238   return &exec_info[0];
 239 }
 240
 241
 242 /* Accessor for the disassem execution info ptr.  */
 243 struct tui_gen_win_info *
 244 tui_disassem_exec_info_win_ptr (void)
 245 {
 246   return &exec_info[1];
 247 }
 248
 249
 250 /* Accessor for the locator win info.  Answers a pointer to the static
 251    locator win info struct.  */
 252 struct tui_gen_win_info *
 253 tui_locator_win_info_ptr (void)
 254 {
 255   return &_locator;
 256 }
 257
 258
 259 /* Accessor for the term_height.  */
 260 int
 261 tui_term_height (void)
 262 {
 263   return term_height;
 264 }
 265
 266
 267 /* Mutator for the term height.  */
 268 void
 269 tui_set_term_height_to (int h)
 270 {
 271   term_height = h;
 272 }
 273
 274
 275 /* Accessor for the term_width.  */
 276 int
 277 tui_term_width (void)
 278 {
 279   return term_width;
 280 }
 281
 282
 283 /* Mutator for the term_width.  */
 284 void
 285 tui_set_term_width_to (int w)
 286 {
 287   term_width = w;
 288 }
 289
 290
 291 /* Accessor for the current layout.  */
 292 enum tui_layout_type
 293 tui_current_layout (void)
 294 {
 295   return current_layout;
 296 }
 297
 298
 299 /* Mutator for the current layout.  */
 300 void
 301 tui_set_current_layout_to (enum tui_layout_type new_layout)
 302 {
 303   current_layout = new_layout;
 304 }
 305
 306
 307 /*****************************
 308 ** OTHER PUBLIC FUNCTIONS
 309 *****************************/
 310
 311
 312 /* Answer the next window in the list, cycling back to the top if
 313    necessary.  */
 314 struct tui_win_info *
 315 tui_next_win (struct tui_win_info *cur_win)
 316 {
 317   int type = cur_win->generic.type;
 318   struct tui_win_info *next_win = NULL;
 319
 320   if (cur_win->generic.type == CMD_WIN)
 321     type = SRC_WIN;
 322   else
 323     type = cur_win->generic.type + 1;
 324   while (type != cur_win->generic.type && (next_win == NULL))
 325     {
 326       if (tui_win_list[type]
 327           && tui_win_list[type]->generic.is_visible)
 328         next_win = tui_win_list[type];
 329       else
 330         {
 331           if (type == CMD_WIN)
 332             type = SRC_WIN;
 333           else
 334             type++;
 335         }
 336     }
 337
 338   return next_win;
 339 }
 340
 341
 342 /* Answer the prev window in the list, cycling back to the bottom if
 343    necessary.  */
 344 struct tui_win_info *
 345 tui_prev_win (struct tui_win_info *cur_win)
 346 {
 347   int type = cur_win->generic.type;
 348   struct tui_win_info *prev = NULL;
 349
 350   if (cur_win->generic.type == SRC_WIN)
 351     type = CMD_WIN;
 352   else
 353     type = cur_win->generic.type - 1;
 354   while (type != cur_win->generic.type && (prev == NULL))
 355     {
 356       if (tui_win_list[type]
 357           && tui_win_list[type]->generic.is_visible)
 358         prev = tui_win_list[type];
 359       else
 360         {
 361           if (type == SRC_WIN)
 362             type = CMD_WIN;
 363           else
 364             type--;
 365         }
 366     }
 367
 368   return prev;
 369 }
 370
 371
 372 /* Answer the window represented by name.  */
 373 struct tui_win_info *
 374 tui_partial_win_by_name (const char *name)
 375 {
 376   struct tui_win_info *win_info = NULL;
 377
 378   if (name != NULL)
 379     {
 380       int i = 0;
 381
 382       while (i < MAX_MAJOR_WINDOWS && win_info == NULL)
 383         {
 384           if (tui_win_list[i] != 0)
 385             {
 386               const char *cur_name =
 387                 tui_win_name (&tui_win_list[i]->generic);
 388
 389               if (strlen (name) <= strlen (cur_name)
 390                   && startswith (cur_name, name))
 391                 win_info = tui_win_list[i];
 392             }
 393           i++;
 394         }
 395     }
 396
 397   return win_info;
 398 }
 399
 400
 401 /* Answer the name of the window.  */
 402 const char *
 403 tui_win_name (const struct tui_gen_win_info *win_info)
 404 {
 405   const char *name = NULL;
 406
 407   switch (win_info->type)
 408     {
 409     case SRC_WIN:
 410       name = SRC_NAME;
 411       break;
 412     case CMD_WIN:
 413       name = CMD_NAME;
 414       break;
 415     case DISASSEM_WIN:
 416       name = DISASSEM_NAME;
 417       break;
 418     case DATA_WIN:
 419       name = DATA_NAME;
 420       break;
 421     default:
 422       name = "";
 423       break;
 424     }
 425
 426   return name;
 427 }
 428
 429
 430 void
 431 tui_initialize_static_data (void)
 432 {
 433   tui_init_generic_part (tui_source_exec_info_win_ptr ());
 434   tui_init_generic_part (tui_disassem_exec_info_win_ptr ());
 435   tui_init_generic_part (tui_locator_win_info_ptr ());
 436 }
 437
 438
 439 struct tui_gen_win_info *
 440 tui_alloc_generic_win_info (void)
 441 {
 442   struct tui_gen_win_info *win = XNEW (struct tui_gen_win_info);
 443
 444   if (win != NULL)
 445     tui_init_generic_part (win);
 446
 447   return win;
 448 }
 449
 450
 451 void
 452 tui_init_generic_part (struct tui_gen_win_info *win)
 453 {
 454   win->width =
 455     win->height =
 456     win->origin.x =
 457     win->origin.y =
 458     win->viewport_height =
 459     win->content_size =
 460     win->last_visible_line = 0;
 461   win->handle = NULL;
 462   win->content = NULL;
 463   win->content_in_use =
 464     win->is_visible = FALSE;
 465   win->title = 0;
 466 }
 467
 468
 469 /* init_content_element().
 470  */
 471 static void
 472 init_content_element (struct tui_win_element *element,
 473                       enum tui_win_type type)
 474 {
 475   switch (type)
 476     {
 477     case SRC_WIN:
 478     case DISASSEM_WIN:
 479       element->which_element.source.line = NULL;
 480       element->which_element.source.line_or_addr.loa = LOA_LINE;
 481       element->which_element.source.line_or_addr.u.line_no = 0;
 482       element->which_element.source.is_exec_point = FALSE;
 483       element->which_element.source.has_break = FALSE;
 484       break;
 485     case DATA_WIN:
 486       tui_init_generic_part (&element->which_element.data_window);
 487       element->which_element.data_window.type = DATA_ITEM_WIN;
 488       element->which_element.data_window.content =
 489         tui_alloc_content (1, DATA_ITEM_WIN);
 490       element->which_element.data_window.content_size = 1;
 491       break;
 492     case CMD_WIN:
 493       element->which_element.command.line = NULL;
 494       break;
 495     case DATA_ITEM_WIN:
 496       element->which_element.data.name = NULL;
 497       element->which_element.data.type = TUI_REGISTER;
 498       element->which_element.data.item_no = UNDEFINED_ITEM;
 499       element->which_element.data.value = NULL;
 500       element->which_element.data.highlight = FALSE;
 501       element->which_element.data.content = NULL;
 502       break;
 503     case LOCATOR_WIN:
 504       element->which_element.locator.full_name[0] =
 505         element->which_element.locator.proc_name[0] = (char) 0;
 506       element->which_element.locator.line_no = 0;
 507       element->which_element.locator.addr = 0;
 508       break;
 509     case EXEC_INFO_WIN:
 510       memset(element->which_element.simple_string, ' ',
 511              sizeof(element->which_element.simple_string));
 512       break;
 513     default:
 514       break;
 515     }
 516 }
 517
 518 static void
 519 init_win_info (struct tui_win_info *win_info)
 520 {
 521   tui_init_generic_part (&win_info->generic);
 522   win_info->can_highlight =
 523     win_info->is_highlighted = FALSE;
 524   switch (win_info->generic.type)
 525     {
 526     case SRC_WIN:
 527     case DISASSEM_WIN:
 528       win_info->detail.source_info.execution_info
 529         = (struct tui_gen_win_info *) NULL;
 530       win_info->detail.source_info.has_locator = FALSE;
 531       win_info->detail.source_info.horizontal_offset = 0;
 532       win_info->detail.source_info.gdbarch = NULL;
 533       win_info->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
 534       win_info->detail.source_info.start_line_or_addr.u.addr = 0;
 535       win_info->detail.source_info.fullname = NULL;
 536       break;
 537     case DATA_WIN:
 538       win_info->detail.data_display_info.data_content = (tui_win_content) NULL;
 539       win_info->detail.data_display_info.data_content_count = 0;
 540       win_info->detail.data_display_info.regs_content = (tui_win_content) NULL;
 541       win_info->detail.data_display_info.regs_content_count = 0;
 542       win_info->detail.data_display_info.regs_column_count = 1;
 543       win_info->detail.data_display_info.display_regs = FALSE;
 544       win_info->detail.data_display_info.current_group = 0;
 545       break;
 546     case CMD_WIN:
 547       break;
 548     }
 549 }
 550
 551
 552 struct tui_win_info *
 553 tui_alloc_win_info (enum tui_win_type type)
 554 {
 555   struct tui_win_info *win_info = XNEW (struct tui_win_info);
 556
 557   if (win_info != NULL)
 558     {
 559       win_info->generic.type = type;
 560       init_win_info (win_info);
 561     }
 562
 563   return win_info;
 564 }
 565
 566
 567 /* Allocates the content and elements in a block.  */
 568 tui_win_content
 569 tui_alloc_content (int num_elements, enum tui_win_type type)
 570 {
 571   tui_win_content content;
 572   struct tui_win_element *element_block_ptr;
 573   int i;
 574
 575   content = XNEWVEC (struct tui_win_element *, num_elements);
 576
 577   /*
 578    * All windows, except the data window, can allocate the
 579    * elements in a chunk.  The data window cannot because items
 580    * can be added/removed from the data display by the user at any
 581    * time.
 582    */
 583   if (type != DATA_WIN)
 584     {
 585       element_block_ptr = XNEWVEC (struct tui_win_element, num_elements);
 586       for (i = 0; i < num_elements; i++)
 587         {
 588           content[i] = element_block_ptr;
 589           init_content_element (content[i], type);
 590           element_block_ptr++;
 591         }
 592     }
 593
 594   return content;
 595 }
 596
 597
 598 /* Adds the input number of elements to the windows's content.  If no
 599    content has been allocated yet, alloc_content() is called to do
 600    this.  The index of the first element added is returned, unless
 601    there is a memory allocation error, in which case, (-1) is
 602    returned.  */
 603 int
 604 tui_add_content_elements (struct tui_gen_win_info *win_info,
 605                           int num_elements)
 606 {
 607   struct tui_win_element *element_ptr;
 608   int i, index_start;
 609
 610   if (win_info->content == NULL)
 611     {
 612       win_info->content = tui_alloc_content (num_elements, win_info->type);
 613       index_start = 0;
 614     }
 615   else
 616     index_start = win_info->content_size;
 617   if (win_info->content != NULL)
 618     {
 619       for (i = index_start; (i < num_elements + index_start); i++)
 620         {
 621           element_ptr = XNEW (struct tui_win_element);
 622           if (element_ptr != NULL)
 623             {
 624               win_info->content[i] = element_ptr;
 625               init_content_element (element_ptr, win_info->type);
 626               win_info->content_size++;
 627             }
 628           else  /* Things must be really hosed now!  We ran out of
 629                    memory!?  */
 630             return (-1);
 631         }
 632     }
 633
 634   return index_start;
 635 }
 636
 637
 638 /* Delete all curses windows associated with win_info, leaving
 639    everything else intact.  */
 640 void
 641 tui_del_window (struct tui_win_info *win_info)
 642 {
 643   struct tui_gen_win_info *generic_win;
 644
 645   switch (win_info->generic.type)
 646     {
 647     case SRC_WIN:
 648     case DISASSEM_WIN:
 649       generic_win = tui_locator_win_info_ptr ();
 650       if (generic_win != (struct tui_gen_win_info *) NULL)
 651         {
 652           tui_delete_win (generic_win->handle);
 653           generic_win->handle = NULL;
 654           generic_win->is_visible = FALSE;
 655         }
 656       if (win_info->detail.source_info.fullname)
 657         {
 658           xfree (win_info->detail.source_info.fullname);
 659           win_info->detail.source_info.fullname = NULL;
 660         }
 661       generic_win = win_info->detail.source_info.execution_info;
 662       if (generic_win != (struct tui_gen_win_info *) NULL)
 663         {
 664           tui_delete_win (generic_win->handle);
 665           generic_win->handle = NULL;
 666           generic_win->is_visible = FALSE;
 667         }
 668       break;
 669     case DATA_WIN:
 670       if (win_info->generic.content != NULL)
 671         {
 672           tui_del_data_windows (win_info->detail.data_display_info.regs_content,
 673                                 win_info->detail.data_display_info.regs_content_count);
 674           tui_del_data_windows (win_info->detail.data_display_info.data_content,
 675                                 win_info->detail.data_display_info.data_content_count);
 676         }
 677       break;
 678     default:
 679       break;
 680     }
 681   if (win_info->generic.handle != (WINDOW *) NULL)
 682     {
 683       tui_delete_win (win_info->generic.handle);
 684       win_info->generic.handle = NULL;
 685       win_info->generic.is_visible = FALSE;
 686     }
 687 }
 688
 689
 690 void
 691 tui_free_window (struct tui_win_info *win_info)
 692 {
 693   struct tui_gen_win_info *generic_win;
 694
 695   switch (win_info->generic.type)
 696     {
 697     case SRC_WIN:
 698     case DISASSEM_WIN:
 699       if (win_info->detail.source_info.fullname)
 700         {
 701           xfree (win_info->detail.source_info.fullname);
 702           win_info->detail.source_info.fullname = NULL;
 703         }
 704       generic_win = win_info->detail.source_info.execution_info;
 705       if (generic_win != (struct tui_gen_win_info *) NULL)
 706         {
 707           tui_delete_win (generic_win->handle);
 708           generic_win->handle = NULL;
 709           tui_free_win_content (generic_win);
 710         }
 711       break;
 712     case DATA_WIN:
 713       if (win_info->generic.content != NULL)
 714         {
 715           tui_free_data_content (win_info->detail.data_display_info.regs_content,
 716                                  win_info->detail.data_display_info.regs_content_count);
 717           win_info->detail.data_display_info.regs_content =
 718             (tui_win_content) NULL;
 719           win_info->detail.data_display_info.regs_content_count = 0;
 720           tui_free_data_content (win_info->detail.data_display_info.data_content,
 721                                  win_info->detail.data_display_info.data_content_count);
 722           win_info->detail.data_display_info.data_content =
 723             (tui_win_content) NULL;
 724           win_info->detail.data_display_info.data_content_count = 0;
 725           win_info->detail.data_display_info.regs_column_count = 1;
 726           win_info->detail.data_display_info.display_regs = FALSE;
 727           win_info->generic.content = NULL;
 728           win_info->generic.content_size = 0;
 729         }
 730       break;
 731     default:
 732       break;
 733     }
 734   if (win_info->generic.handle != (WINDOW *) NULL)
 735     {
 736       tui_delete_win (win_info->generic.handle);
 737       win_info->generic.handle = NULL;
 738       tui_free_win_content (&win_info->generic);
 739     }
 740   if (win_info->generic.title)
 741     xfree (win_info->generic.title);
 742   xfree (win_info);
 743 }
 744
 745
 746 void
 747 tui_free_all_source_wins_content (void)
 748 {
 749   int i;
 750
 751   for (i = 0; i < (tui_source_windows ())->count; i++)
 752     {
 753       struct tui_win_info *win_info = (tui_source_windows ())->list[i];
 754
 755       if (win_info != NULL)
 756         {
 757           tui_free_win_content (&(win_info->generic));
 758           tui_free_win_content (win_info->detail.source_info.execution_info);
 759         }
 760     }
 761 }
 762
 763
 764 void
 765 tui_free_win_content (struct tui_gen_win_info *win_info)
 766 {
 767   if (win_info->content != NULL)
 768     {
 769       free_content (win_info->content,
 770                    win_info->content_size,
 771                    win_info->type);
 772       win_info->content = NULL;
 773     }
 774   win_info->content_size = 0;
 775 }
 776
 777
 778 void
 779 tui_del_data_windows (tui_win_content content,
 780                       int content_size)
 781 {
 782   int i;
 783
 784   /* Remember that data window content elements are of type struct
 785      tui_gen_win_info *, each of which whose single element is a data
 786      element.  */
 787   for (i = 0; i < content_size; i++)
 788     {
 789       struct tui_gen_win_info *generic_win
 790         = &content[i]->which_element.data_window;
 791
 792       if (generic_win != (struct tui_gen_win_info *) NULL)
 793         {
 794           tui_delete_win (generic_win->handle);
 795           generic_win->handle = NULL;
 796           generic_win->is_visible = FALSE;
 797         }
 798     }
 799 }
 800
 801
 802 void
 803 tui_free_data_content (tui_win_content content,
 804                        int content_size)
 805 {
 806   int i;
 807
 808   /* Remember that data window content elements are of type struct
 809      tui_gen_win_info *, each of which whose single element is a data
 810      element.  */
 811   for (i = 0; i < content_size; i++)
 812     {
 813       struct tui_gen_win_info *generic_win
 814         = &content[i]->which_element.data_window;
 815
 816       if (generic_win != (struct tui_gen_win_info *) NULL)
 817         {
 818           tui_delete_win (generic_win->handle);
 819           generic_win->handle = NULL;
 820           tui_free_win_content (generic_win);
 821         }
 822     }
 823   free_content (content,
 824                 content_size,
 825                 DATA_WIN);
 826 }
 827
 828
 829 /**********************************
 830 ** LOCAL STATIC FUNCTIONS        **
 831 **********************************/
 832
 833
 834 static void
 835 free_content (tui_win_content content,
 836               int content_size,
 837               enum tui_win_type win_type)
 838 {
 839   if (content != (tui_win_content) NULL)
 840     {
 841       free_content_elements (content, content_size, win_type);
 842       xfree (content);
 843     }
 844 }
 845
 846
 847 /* free_content_elements().
 848  */
 849 static void
 850 free_content_elements (tui_win_content content,
 851                        int content_size,
 852                        enum tui_win_type type)
 853 {
 854   if (content != (tui_win_content) NULL)
 855     {
 856       int i;
 857
 858       if (type == SRC_WIN || type == DISASSEM_WIN)
 859         {
 860           /* Free whole source block.  */
 861           xfree (content[0]->which_element.source.line);
 862         }
 863       else
 864         {
 865           for (i = 0; i < content_size; i++)
 866             {
 867               struct tui_win_element *element;
 868
 869               element = content[i];
 870               if (element != (struct tui_win_element *) NULL)
 871                 {
 872                   switch (type)
 873                     {
 874                     case DATA_WIN:
 875                       xfree (element);
 876                       break;
 877                     case DATA_ITEM_WIN:
 878                       /* Note that data elements are not allocated in
 879                          a single block, but individually, as
 880                          needed.  */
 881                       if (element->which_element.data.type != TUI_REGISTER)
 882                         xfree ((void *)element->which_element.data.name);
 883                       xfree (element->which_element.data.value);
 884                       xfree (element->which_element.data.content);
 885                       xfree (element);
 886                       break;
 887                     case CMD_WIN:
 888                       xfree (element->which_element.command.line);
 889                       break;
 890                     default:
 891                       break;
 892                     }
 893                 }
 894             }
 895         }
 896       if (type != DATA_WIN && type != DATA_ITEM_WIN)
 897         xfree (content[0]);     /* Free the element block.  */
 898     }
 899 }