gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright (C) 1998-2017 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 "arch-utils.h"
  24 #include "command.h"
  25 #include "symtab.h"
  26 #include "frame.h"
  27 #include "source.h"
  28 #include <ctype.h>
  29
  30 #include "tui/tui.h"
  31 #include "tui/tui-data.h"
  32 #include "tui/tui-windata.h"
  33 #include "tui/tui-wingeneral.h"
  34 #include "tui/tui-stack.h"
  35 #include "tui/tui-regs.h"
  36 #include "tui/tui-win.h"
  37 #include "tui/tui-winsource.h"
  38 #include "tui/tui-disasm.h"
  39 #include "tui/tui-layout.h"
  40 #include "gdb_curses.h"
  41
  42 /*******************************
  43 ** Static Local Decls
  44 ********************************/
  45 static void show_layout (enum tui_layout_type);
  46 static void init_gen_win_info (struct tui_gen_win_info *,
  47                                enum tui_win_type,
  48                                int, int, int, int);
  49 static void *init_and_make_win (void *, enum tui_win_type,
  50                                 int, int, int, int, int);
  51 static void show_source_or_disasm_and_command (enum tui_layout_type);
  52 static void make_source_or_disasm_window (struct tui_win_info **,
  53                                           enum tui_win_type,
  54                                           int, int);
  55 static void make_command_window (struct tui_win_info **, int, int);
  56 static void make_source_window (struct tui_win_info **, int, int);
  57 static void make_disasm_window (struct tui_win_info **, int, int);
  58 static void make_data_window (struct tui_win_info **, int, int);
  59 static void show_source_command (void);
  60 static void show_disasm_command (void);
  61 static void show_source_disasm_command (void);
  62 static void show_data (enum tui_layout_type);
  63 static enum tui_layout_type next_layout (void);
  64 static enum tui_layout_type prev_layout (void);
  65 static void tui_layout_command (char *, int);
  66 static void extract_display_start_addr (struct gdbarch **, CORE_ADDR *);
  67
  68
  69 /***************************************
  70 ** DEFINITIONS
  71 ***************************************/
  72
  73 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
  74
  75 /* Show the screen layout defined.  */
  76 static void
  77 show_layout (enum tui_layout_type layout)
  78 {
  79   enum tui_layout_type cur_layout = tui_current_layout ();
  80
  81   if (layout != cur_layout)
  82     {
  83       /* Since the new layout may cause changes in window size, we
  84          should free the content and reallocate on next display of
  85          source/asm.  */
  86       tui_free_all_source_wins_content ();
  87       tui_clear_source_windows ();
  88       if (layout == SRC_DATA_COMMAND
  89           || layout == DISASSEM_DATA_COMMAND)
  90         {
  91           show_data (layout);
  92           tui_refresh_all (tui_win_list);
  93         }
  94       else
  95         {
  96           /* First make the current layout be invisible.  */
  97           tui_make_all_invisible ();
  98           tui_make_invisible (tui_locator_win_info_ptr ());
  99
 100           switch (layout)
 101             {
 102               /* Now show the new layout.  */
 103             case SRC_COMMAND:
 104               show_source_command ();
 105               tui_add_to_source_windows (TUI_SRC_WIN);
 106               break;
 107             case DISASSEM_COMMAND:
 108               show_disasm_command ();
 109               tui_add_to_source_windows (TUI_DISASM_WIN);
 110               break;
 111             case SRC_DISASSEM_COMMAND:
 112               show_source_disasm_command ();
 113               tui_add_to_source_windows (TUI_SRC_WIN);
 114               tui_add_to_source_windows (TUI_DISASM_WIN);
 115               break;
 116             default:
 117               break;
 118             }
 119         }
 120     }
 121 }
 122
 123
 124 /* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
 125    SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.  */
 126 enum tui_status
 127 tui_set_layout (enum tui_layout_type layout_type)
 128 {
 129   enum tui_status status = TUI_SUCCESS;
 130
 131   if (layout_type != UNDEFINED_LAYOUT)
 132     {
 133       enum tui_layout_type cur_layout = tui_current_layout (),
 134         new_layout = UNDEFINED_LAYOUT;
 135       int regs_populate = FALSE;
 136       struct gdbarch *gdbarch;
 137       CORE_ADDR addr;
 138       struct tui_win_info *win_with_focus = tui_win_with_focus ();
 139       struct tui_layout_def *layout_def = tui_layout_def ();
 140
 141       extract_display_start_addr (&gdbarch, &addr);
 142
 143       new_layout = layout_type;
 144
 145       regs_populate = (new_layout == SRC_DATA_COMMAND
 146                        || new_layout == DISASSEM_DATA_COMMAND);
 147       if (new_layout != cur_layout)
 148         {
 149           show_layout (new_layout);
 150
 151           /* Now determine where focus should be.  */
 152           if (win_with_focus != TUI_CMD_WIN)
 153             {
 154               switch (new_layout)
 155                 {
 156                 case SRC_COMMAND:
 157                   tui_set_win_focus_to (TUI_SRC_WIN);
 158                   layout_def->display_mode = SRC_WIN;
 159                   layout_def->split = FALSE;
 160                   break;
 161                 case DISASSEM_COMMAND:
 162                   /* The previous layout was not showing code.
 163                      This can happen if there is no source
 164                      available:
 165
 166                      1. if the source file is in another dir OR
 167                      2. if target was compiled without -g
 168                      We still want to show the assembly though!  */
 169
 170                   tui_get_begin_asm_address (&gdbarch, &addr);
 171                   tui_set_win_focus_to (TUI_DISASM_WIN);
 172                   layout_def->display_mode = DISASSEM_WIN;
 173                   layout_def->split = FALSE;
 174                   break;
 175                 case SRC_DISASSEM_COMMAND:
 176                   /* The previous layout was not showing code.
 177                      This can happen if there is no source
 178                      available:
 179
 180                      1. if the source file is in another dir OR
 181                      2. if target was compiled without -g
 182                      We still want to show the assembly though!  */
 183
 184                   tui_get_begin_asm_address (&gdbarch, &addr);
 185                   if (win_with_focus == TUI_SRC_WIN)
 186                     tui_set_win_focus_to (TUI_SRC_WIN);
 187                   else
 188                     tui_set_win_focus_to (TUI_DISASM_WIN);
 189                   layout_def->split = TRUE;
 190                   break;
 191                 case SRC_DATA_COMMAND:
 192                   if (win_with_focus != TUI_DATA_WIN)
 193                     tui_set_win_focus_to (TUI_SRC_WIN);
 194                   else
 195                     tui_set_win_focus_to (TUI_DATA_WIN);
 196                   layout_def->display_mode = SRC_WIN;
 197                   layout_def->split = FALSE;
 198                   break;
 199                 case DISASSEM_DATA_COMMAND:
 200                   /* The previous layout was not showing code.
 201                      This can happen if there is no source
 202                      available:
 203
 204                      1. if the source file is in another dir OR
 205                      2. if target was compiled without -g
 206                      We still want to show the assembly though!  */
 207
 208                   tui_get_begin_asm_address (&gdbarch, &addr);
 209                   if (win_with_focus != TUI_DATA_WIN)
 210                     tui_set_win_focus_to (TUI_DISASM_WIN);
 211                   else
 212                     tui_set_win_focus_to (TUI_DATA_WIN);
 213                   layout_def->display_mode = DISASSEM_WIN;
 214                   layout_def->split = FALSE;
 215                   break;
 216                 default:
 217                   break;
 218                 }
 219             }
 220           /*
 221            * Now update the window content.
 222            */
 223           if (!regs_populate
 224               && (new_layout == SRC_DATA_COMMAND
 225                   || new_layout == DISASSEM_DATA_COMMAND))
 226             tui_display_all_data ();
 227
 228           tui_update_source_windows_with_addr (gdbarch, addr);
 229
 230           if (regs_populate)
 231             {
 232               struct reggroup *group =
 233                 TUI_DATA_WIN->detail.data_display_info.current_group;
 234               tui_show_registers (group);
 235             }
 236         }
 237     }
 238   else
 239     status = TUI_FAILURE;
 240
 241   return status;
 242 }
 243
 244 /* Add the specified window to the layout in a logical way.  This
 245    means setting up the most logical layout given the window to be
 246    added.  */
 247 void
 248 tui_add_win_to_layout (enum tui_win_type type)
 249 {
 250   enum tui_layout_type cur_layout = tui_current_layout ();
 251
 252   switch (type)
 253     {
 254     case SRC_WIN:
 255       if (cur_layout != SRC_COMMAND
 256           && cur_layout != SRC_DISASSEM_COMMAND
 257           && cur_layout != SRC_DATA_COMMAND)
 258         {
 259           tui_clear_source_windows_detail ();
 260           if (cur_layout == DISASSEM_DATA_COMMAND)
 261             show_layout (SRC_DATA_COMMAND);
 262           else
 263             show_layout (SRC_COMMAND);
 264         }
 265       break;
 266     case DISASSEM_WIN:
 267       if (cur_layout != DISASSEM_COMMAND
 268           && cur_layout != SRC_DISASSEM_COMMAND
 269           && cur_layout != DISASSEM_DATA_COMMAND)
 270         {
 271           tui_clear_source_windows_detail ();
 272           if (cur_layout == SRC_DATA_COMMAND)
 273             show_layout (DISASSEM_DATA_COMMAND);
 274           else
 275             show_layout (DISASSEM_COMMAND);
 276         }
 277       break;
 278     case DATA_WIN:
 279       if (cur_layout != SRC_DATA_COMMAND
 280           && cur_layout != DISASSEM_DATA_COMMAND)
 281         {
 282           if (cur_layout == DISASSEM_COMMAND)
 283             show_layout (DISASSEM_DATA_COMMAND);
 284           else
 285             show_layout (SRC_DATA_COMMAND);
 286         }
 287       break;
 288     default:
 289       break;
 290     }
 291 }
 292
 293
 294 /* Answer the height of a window.  If it hasn't been created yet,
 295    answer what the height of a window would be based upon its type and
 296    the layout.  */
 297 int
 298 tui_default_win_height (enum tui_win_type type,
 299                         enum tui_layout_type layout)
 300 {
 301   int h;
 302
 303   if (tui_win_list[type] != (struct tui_win_info *) NULL)
 304     h = tui_win_list[type]->generic.height;
 305   else
 306     {
 307       switch (layout)
 308         {
 309         case SRC_COMMAND:
 310         case DISASSEM_COMMAND:
 311           if (TUI_CMD_WIN == NULL)
 312             h = tui_term_height () / 2;
 313           else
 314             h = tui_term_height () - TUI_CMD_WIN->generic.height;
 315           break;
 316         case SRC_DISASSEM_COMMAND:
 317         case SRC_DATA_COMMAND:
 318         case DISASSEM_DATA_COMMAND:
 319           if (TUI_CMD_WIN == NULL)
 320             h = tui_term_height () / 3;
 321           else
 322             h = (tui_term_height () - TUI_CMD_WIN->generic.height) / 2;
 323           break;
 324         default:
 325           h = 0;
 326           break;
 327         }
 328     }
 329
 330   return h;
 331 }
 332
 333
 334 /* Answer the height of a window.  If it hasn't been created yet,
 335    answer what the height of a window would be based upon its type and
 336    the layout.  */
 337 int
 338 tui_default_win_viewport_height (enum tui_win_type type,
 339                                  enum tui_layout_type layout)
 340 {
 341   int h;
 342
 343   h = tui_default_win_height (type, layout);
 344
 345   if (tui_win_list[type] == TUI_CMD_WIN)
 346     h -= 1;
 347   else
 348     h -= 2;
 349
 350   return h;
 351 }
 352
 353 /* Complete possible layout names.  TEXT is the complete text entered so
 354    far, WORD is the word currently being completed.  */
 355
 356 static void
 357 layout_completer (struct cmd_list_element *ignore,
 358                   completion_tracker &tracker,
 359                   const char *text, const char *word)
 360 {
 361   static const char *layout_names [] =
 362     { "src", "asm", "split", "regs", "next", "prev", NULL };
 363
 364   complete_on_enum (tracker, layout_names, text, word);
 365 }
 366
 367 /* Function to initialize gdb commands, for tui window layout
 368    manipulation.  */
 369
 370 /* Provide a prototype to silence -Wmissing-prototypes.  */
 371 extern initialize_file_ftype _initialize_tui_layout;
 372
 373 void
 374 _initialize_tui_layout (void)
 375 {
 376   struct cmd_list_element *cmd;
 377
 378   cmd = add_com ("layout", class_tui, tui_layout_command, _("\
 379 Change the layout of windows.\n\
 380 Usage: layout prev | next | <layout_name> \n\
 381 Layout names are:\n\
 382    src   : Displays source and command windows.\n\
 383    asm   : Displays disassembly and command windows.\n\
 384    split : Displays source, disassembly and command windows.\n\
 385    regs  : Displays register window. If existing layout\n\
 386            is source/command or assembly/command, the \n\
 387            register window is displayed. If the\n\
 388            source/assembly/command (split) is displayed, \n\
 389            the register window is displayed with \n\
 390            the window that has current logical focus.\n"));
 391   set_cmd_completer (cmd, layout_completer);
 392 }
 393
 394
 395 /*************************
 396 ** STATIC LOCAL FUNCTIONS
 397 **************************/
 398
 399
 400 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA, or
 401    REGS. */
 402 enum tui_status
 403 tui_set_layout_by_name (const char *layout_name)
 404 {
 405   enum tui_status status = TUI_SUCCESS;
 406
 407   if (layout_name != (char *) NULL)
 408     {
 409       int i;
 410       char *buf_ptr;
 411       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 412       enum tui_layout_type cur_layout = tui_current_layout ();
 413       struct cleanup *old_chain;
 414
 415       buf_ptr = (char *) xstrdup (layout_name);
 416       for (i = 0; (i < strlen (layout_name)); i++)
 417         buf_ptr[i] = toupper (buf_ptr[i]);
 418       old_chain = make_cleanup (xfree, buf_ptr);
 419
 420       /* First check for ambiguous input.  */
 421       if (strlen (buf_ptr) <= 1 && *buf_ptr == 'S')
 422         {
 423           warning (_("Ambiguous command input."));
 424           status = TUI_FAILURE;
 425         }
 426       else
 427         {
 428           if (subset_compare (buf_ptr, "SRC"))
 429             new_layout = SRC_COMMAND;
 430           else if (subset_compare (buf_ptr, "ASM"))
 431             new_layout = DISASSEM_COMMAND;
 432           else if (subset_compare (buf_ptr, "SPLIT"))
 433             new_layout = SRC_DISASSEM_COMMAND;
 434           else if (subset_compare (buf_ptr, "REGS"))
 435             {
 436               if (cur_layout == SRC_COMMAND
 437                   || cur_layout == SRC_DATA_COMMAND)
 438                 new_layout = SRC_DATA_COMMAND;
 439               else
 440                 new_layout = DISASSEM_DATA_COMMAND;
 441             }
 442           else if (subset_compare (buf_ptr, "NEXT"))
 443             new_layout = next_layout ();
 444           else if (subset_compare (buf_ptr, "PREV"))
 445             new_layout = prev_layout ();
 446           else
 447             status = TUI_FAILURE;
 448
 449           if (status == TUI_SUCCESS)
 450             {
 451               /* Make sure the curses mode is enabled.  */
 452               tui_enable ();
 453               tui_set_layout (new_layout);
 454             }
 455         }
 456       do_cleanups (old_chain);
 457     }
 458   else
 459     status = TUI_FAILURE;
 460
 461   return status;
 462 }
 463
 464
 465 static void
 466 extract_display_start_addr (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
 467 {
 468   enum tui_layout_type cur_layout = tui_current_layout ();
 469   struct gdbarch *gdbarch = get_current_arch ();
 470   CORE_ADDR addr;
 471   CORE_ADDR pc;
 472   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 473
 474   switch (cur_layout)
 475     {
 476     case SRC_COMMAND:
 477     case SRC_DATA_COMMAND:
 478       gdbarch = TUI_SRC_WIN->detail.source_info.gdbarch;
 479       find_line_pc (cursal.symtab,
 480                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 481                     &pc);
 482       addr = pc;
 483       break;
 484     case DISASSEM_COMMAND:
 485     case SRC_DISASSEM_COMMAND:
 486     case DISASSEM_DATA_COMMAND:
 487       gdbarch = TUI_DISASM_WIN->detail.source_info.gdbarch;
 488       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 489       break;
 490     default:
 491       addr = 0;
 492       break;
 493     }
 494
 495   *gdbarch_p = gdbarch;
 496   *addr_p = addr;
 497 }
 498
 499
 500 static void
 501 tui_layout_command (char *arg, int from_tty)
 502 {
 503   /* Switch to the selected layout.  */
 504   if (tui_set_layout_by_name (arg) != TUI_SUCCESS)
 505     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 506
 507 }
 508
 509 /* Answer the previous layout to cycle to.  */
 510 static enum tui_layout_type
 511 next_layout (void)
 512 {
 513   int new_layout;
 514
 515   new_layout = tui_current_layout ();
 516   if (new_layout == UNDEFINED_LAYOUT)
 517     new_layout = SRC_COMMAND;
 518   else
 519     {
 520       new_layout++;
 521       if (new_layout == UNDEFINED_LAYOUT)
 522         new_layout = SRC_COMMAND;
 523     }
 524
 525   return (enum tui_layout_type) new_layout;
 526 }
 527
 528
 529 /* Answer the next layout to cycle to.  */
 530 static enum tui_layout_type
 531 prev_layout (void)
 532 {
 533   int new_layout;
 534
 535   new_layout = tui_current_layout ();
 536   if (new_layout == SRC_COMMAND)
 537     new_layout = DISASSEM_DATA_COMMAND;
 538   else
 539     {
 540       new_layout--;
 541       if (new_layout == UNDEFINED_LAYOUT)
 542         new_layout = DISASSEM_DATA_COMMAND;
 543     }
 544
 545   return (enum tui_layout_type) new_layout;
 546 }
 547
 548
 549
 550 static void
 551 make_command_window (struct tui_win_info **win_info_ptr,
 552                      int height, int origin_y)
 553 {
 554   *win_info_ptr
 555     = (struct tui_win_info *) init_and_make_win (*win_info_ptr,
 556                                                  CMD_WIN,
 557                                                  height,
 558                                                  tui_term_width (),
 559                                                  0,
 560                                                  origin_y,
 561                                                  DONT_BOX_WINDOW);
 562
 563   (*win_info_ptr)->can_highlight = FALSE;
 564 }
 565
 566
 567 /* make_source_window().
 568  */
 569 static void
 570 make_source_window (struct tui_win_info **win_info_ptr,
 571                     int height, int origin_y)
 572 {
 573   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 574
 575   return;
 576 }                               /* make_source_window */
 577
 578
 579 /* make_disasm_window().
 580  */
 581 static void
 582 make_disasm_window (struct tui_win_info **win_info_ptr,
 583                     int height, int origin_y)
 584 {
 585   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 586
 587   return;
 588 }                               /* make_disasm_window */
 589
 590
 591 static void
 592 make_data_window (struct tui_win_info **win_info_ptr,
 593                   int height, int origin_y)
 594 {
 595   *win_info_ptr
 596     = (struct tui_win_info *) init_and_make_win (*win_info_ptr,
 597                                                  DATA_WIN,
 598                                                  height,
 599                                                  tui_term_width (),
 600                                                  0,
 601                                                  origin_y,
 602                                                  BOX_WINDOW);
 603 }
 604
 605
 606
 607 /* Show the Source/Command layout.  */
 608 static void
 609 show_source_command (void)
 610 {
 611   show_source_or_disasm_and_command (SRC_COMMAND);
 612 }
 613
 614
 615 /* Show the Dissassem/Command layout.  */
 616 static void
 617 show_disasm_command (void)
 618 {
 619   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 620 }
 621
 622
 623 /* Show the Source/Disassem/Command layout.  */
 624 static void
 625 show_source_disasm_command (void)
 626 {
 627   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 628     {
 629       int cmd_height, src_height, asm_height;
 630
 631       if (TUI_CMD_WIN != NULL)
 632         cmd_height = TUI_CMD_WIN->generic.height;
 633       else
 634         cmd_height = tui_term_height () / 3;
 635
 636       src_height = (tui_term_height () - cmd_height) / 2;
 637       asm_height = tui_term_height () - (src_height + cmd_height);
 638
 639       if (TUI_SRC_WIN == NULL)
 640         make_source_window (&TUI_SRC_WIN, src_height, 0);
 641       else
 642         {
 643           init_gen_win_info (&TUI_SRC_WIN->generic,
 644                              TUI_SRC_WIN->generic.type,
 645                              src_height,
 646                              TUI_SRC_WIN->generic.width,
 647                              TUI_SRC_WIN->detail.source_info.execution_info->width,
 648                              0);
 649           TUI_SRC_WIN->can_highlight = TRUE;
 650           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 651                              EXEC_INFO_WIN,
 652                              src_height,
 653                              3,
 654                              0,
 655                              0);
 656           tui_make_visible (&TUI_SRC_WIN->generic);
 657           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 658           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 659         }
 660       if (TUI_SRC_WIN != NULL)
 661         {
 662           struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 663
 664           tui_show_source_content (TUI_SRC_WIN);
 665           if (TUI_DISASM_WIN == NULL)
 666             {
 667               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 668               locator
 669                 = ((struct tui_gen_win_info *)
 670                    init_and_make_win (locator,
 671                                       LOCATOR_WIN,
 672                                       2 /* 1 */ ,
 673                                       tui_term_width (),
 674                                       0,
 675                                       (src_height + asm_height) - 1,
 676                                       DONT_BOX_WINDOW));
 677             }
 678           else
 679             {
 680               init_gen_win_info (locator,
 681                                  LOCATOR_WIN,
 682                                  2 /* 1 */ ,
 683                                  tui_term_width (),
 684                                  0,
 685                                  (src_height + asm_height) - 1);
 686               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 687               init_gen_win_info (&TUI_DISASM_WIN->generic,
 688                                  TUI_DISASM_WIN->generic.type,
 689                                  asm_height,
 690                                  TUI_DISASM_WIN->generic.width,
 691                                  TUI_DISASM_WIN->detail.source_info.execution_info->width,
 692                                  src_height - 1);
 693               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 694                                  EXEC_INFO_WIN,
 695                                  asm_height,
 696                                  3,
 697                                  0,
 698                                  src_height - 1);
 699               TUI_DISASM_WIN->can_highlight = TRUE;
 700               tui_make_visible (&TUI_DISASM_WIN->generic);
 701               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 702             }
 703           if (TUI_DISASM_WIN != NULL)
 704             {
 705               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 706               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 707               tui_make_visible (locator);
 708               tui_show_locator_content ();
 709               tui_show_source_content (TUI_DISASM_WIN);
 710
 711               if (TUI_CMD_WIN == NULL)
 712                 make_command_window (&TUI_CMD_WIN,
 713                                      cmd_height,
 714                                      tui_term_height () - cmd_height);
 715               else
 716                 {
 717                   init_gen_win_info (&TUI_CMD_WIN->generic,
 718                                      TUI_CMD_WIN->generic.type,
 719                                      TUI_CMD_WIN->generic.height,
 720                                      TUI_CMD_WIN->generic.width,
 721                                      0,
 722                                      TUI_CMD_WIN->generic.origin.y);
 723                   TUI_CMD_WIN->can_highlight = FALSE;
 724                   tui_make_visible (&TUI_CMD_WIN->generic);
 725                 }
 726               if (TUI_CMD_WIN != NULL)
 727                 tui_refresh_win (&TUI_CMD_WIN->generic);
 728             }
 729         }
 730       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 731     }
 732 }
 733
 734
 735 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 736    layout.  */
 737 static void
 738 show_data (enum tui_layout_type new_layout)
 739 {
 740   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 741   int src_height, data_height;
 742   enum tui_win_type win_type;
 743   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 744
 745
 746   data_height = total_height / 2;
 747   src_height = total_height - data_height;
 748   tui_make_all_invisible ();
 749   tui_make_invisible (locator);
 750   make_data_window (&TUI_DATA_WIN, data_height, 0);
 751   TUI_DATA_WIN->can_highlight = TRUE;
 752   if (new_layout == SRC_DATA_COMMAND)
 753     win_type = SRC_WIN;
 754   else
 755     win_type = DISASSEM_WIN;
 756   if (tui_win_list[win_type] == NULL)
 757     {
 758       if (win_type == SRC_WIN)
 759         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 760       else
 761         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 762       locator
 763         = ((struct tui_gen_win_info *)
 764            init_and_make_win (locator,
 765                               LOCATOR_WIN,
 766                               2 /* 1 */ ,
 767                               tui_term_width (),
 768                               0,
 769                               total_height - 1,
 770                               DONT_BOX_WINDOW));
 771     }
 772   else
 773     {
 774       init_gen_win_info (&tui_win_list[win_type]->generic,
 775                          tui_win_list[win_type]->generic.type,
 776                          src_height,
 777                          tui_win_list[win_type]->generic.width,
 778                          tui_win_list[win_type]->detail.source_info.execution_info->width,
 779                          data_height - 1);
 780       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 781                          EXEC_INFO_WIN,
 782                          src_height,
 783                          3,
 784                          0,
 785                          data_height - 1);
 786       tui_make_visible (&tui_win_list[win_type]->generic);
 787       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 788       init_gen_win_info (locator,
 789                          LOCATOR_WIN,
 790                          2 /* 1 */ ,
 791                          tui_term_width (),
 792                          0,
 793                          total_height - 1);
 794     }
 795   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 796   tui_make_visible (locator);
 797   tui_show_locator_content ();
 798   tui_add_to_source_windows (tui_win_list[win_type]);
 799   tui_set_current_layout_to (new_layout);
 800 }
 801
 802 /* init_gen_win_info().
 803  */
 804 static void
 805 init_gen_win_info (struct tui_gen_win_info *win_info,
 806                    enum tui_win_type type,
 807                    int height, int width,
 808                    int origin_x, int origin_y)
 809 {
 810   int h = height;
 811
 812   win_info->type = type;
 813   win_info->width = width;
 814   win_info->height = h;
 815   if (h > 1)
 816     {
 817       win_info->viewport_height = h - 1;
 818       if (win_info->type != CMD_WIN)
 819         win_info->viewport_height--;
 820     }
 821   else
 822     win_info->viewport_height = 1;
 823   win_info->origin.x = origin_x;
 824   win_info->origin.y = origin_y;
 825
 826   return;
 827 }                               /* init_gen_win_info */
 828
 829 /* init_and_make_win().
 830  */
 831 static void *
 832 init_and_make_win (void *opaque_win_info,
 833                    enum tui_win_type win_type,
 834                    int height, int width,
 835                    int origin_x, int origin_y,
 836                    int box_it)
 837 {
 838   struct tui_gen_win_info *generic;
 839
 840   if (opaque_win_info == NULL)
 841     {
 842       if (tui_win_is_auxillary (win_type))
 843         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 844       else
 845         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 846     }
 847   if (tui_win_is_auxillary (win_type))
 848     generic = (struct tui_gen_win_info *) opaque_win_info;
 849   else
 850     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 851
 852   if (opaque_win_info != NULL)
 853     {
 854       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 855       if (!tui_win_is_auxillary (win_type))
 856         {
 857           if (generic->type == CMD_WIN)
 858             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 859           else
 860             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 861         }
 862       tui_make_window (generic, box_it);
 863     }
 864   return opaque_win_info;
 865 }
 866
 867
 868 static void
 869 make_source_or_disasm_window (struct tui_win_info **win_info_ptr,
 870                               enum tui_win_type type,
 871                               int height, int origin_y)
 872 {
 873   struct tui_gen_win_info *execution_info = NULL;
 874
 875   /* Create the exeuction info window.  */
 876   if (type == SRC_WIN)
 877     execution_info = tui_source_exec_info_win_ptr ();
 878   else
 879     execution_info = tui_disassem_exec_info_win_ptr ();
 880   execution_info
 881     = ((struct tui_gen_win_info *)
 882        init_and_make_win (execution_info,
 883                           EXEC_INFO_WIN,
 884                           height,
 885                           3,
 886                           0,
 887                           origin_y,
 888                           DONT_BOX_WINDOW));
 889
 890   /* Now create the source window.  */
 891   *win_info_ptr
 892     = ((struct tui_win_info *)
 893        init_and_make_win (*win_info_ptr,
 894                           type,
 895                           height,
 896                           tui_term_width () - execution_info->width,
 897                           execution_info->width,
 898                           origin_y,
 899                           BOX_WINDOW));
 900
 901   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 902 }
 903
 904
 905 /* Show the Source/Command or the Disassem layout.  */
 906 static void
 907 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 908 {
 909   if (tui_current_layout () != layout_type)
 910     {
 911       struct tui_win_info **win_info_ptr;
 912       int src_height, cmd_height;
 913       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 914
 915       if (TUI_CMD_WIN != NULL)
 916         cmd_height = TUI_CMD_WIN->generic.height;
 917       else
 918         cmd_height = tui_term_height () / 3;
 919       src_height = tui_term_height () - cmd_height;
 920
 921       if (layout_type == SRC_COMMAND)
 922         win_info_ptr = &TUI_SRC_WIN;
 923       else
 924         win_info_ptr = &TUI_DISASM_WIN;
 925
 926       if ((*win_info_ptr) == NULL)
 927         {
 928           if (layout_type == SRC_COMMAND)
 929             make_source_window (win_info_ptr, src_height - 1, 0);
 930           else
 931             make_disasm_window (win_info_ptr, src_height - 1, 0);
 932           locator
 933             = ((struct tui_gen_win_info *)
 934                init_and_make_win (locator,
 935                                   LOCATOR_WIN,
 936                                   2 /* 1 */ ,
 937                                   tui_term_width (),
 938                                   0,
 939                                   src_height - 1,
 940                                   DONT_BOX_WINDOW));
 941         }
 942       else
 943         {
 944           init_gen_win_info (locator,
 945                              LOCATOR_WIN,
 946                              2 /* 1 */ ,
 947                              tui_term_width (),
 948                              0,
 949                              src_height - 1);
 950           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
 951           init_gen_win_info (&(*win_info_ptr)->generic,
 952                              (*win_info_ptr)->generic.type,
 953                              src_height - 1,
 954                              (*win_info_ptr)->generic.width,
 955                              (*win_info_ptr)->detail.source_info.execution_info->width,
 956                              0);
 957           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
 958                              EXEC_INFO_WIN,
 959                              src_height - 1,
 960                              3,
 961                              0,
 962                              0);
 963           (*win_info_ptr)->can_highlight = TRUE;
 964           tui_make_visible (&(*win_info_ptr)->generic);
 965           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
 966         }
 967       if ((*win_info_ptr) != NULL)
 968         {
 969           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
 970           tui_make_visible (locator);
 971           tui_show_locator_content ();
 972           tui_show_source_content (*win_info_ptr);
 973
 974           if (TUI_CMD_WIN == NULL)
 975             {
 976               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
 977               tui_refresh_win (&TUI_CMD_WIN->generic);
 978             }
 979           else
 980             {
 981               init_gen_win_info (&TUI_CMD_WIN->generic,
 982                                  TUI_CMD_WIN->generic.type,
 983                                  TUI_CMD_WIN->generic.height,
 984                                  TUI_CMD_WIN->generic.width,
 985                                  TUI_CMD_WIN->generic.origin.x,
 986                                  TUI_CMD_WIN->generic.origin.y);
 987               TUI_CMD_WIN->can_highlight = FALSE;
 988               tui_make_visible (&TUI_CMD_WIN->generic);
 989             }
 990         }
 991       tui_set_current_layout_to (layout_type);
 992     }
 993 }