contrib/gdb-7/gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright (C) 1998-2015 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 VEC (char_ptr) *
 357 layout_completer (struct cmd_list_element *ignore,
 358                   const char *text, const char *word)
 359 {
 360   static const char *layout_names [] =
 361     { "src", "asm", "split", "regs", "next", "prev", NULL };
 362
 363   return complete_on_enum (layout_names, text, word);
 364 }
 365
 366 /* Function to initialize gdb commands, for tui window layout
 367    manipulation.  */
 368
 369 /* Provide a prototype to silence -Wmissing-prototypes.  */
 370 extern initialize_file_ftype _initialize_tui_layout;
 371
 372 void
 373 _initialize_tui_layout (void)
 374 {
 375   struct cmd_list_element *cmd;
 376
 377   cmd = add_com ("layout", class_tui, tui_layout_command, _("\
 378 Change the layout of windows.\n\
 379 Usage: layout prev | next | <layout_name> \n\
 380 Layout names are:\n\
 381    src   : Displays source and command windows.\n\
 382    asm   : Displays disassembly and command windows.\n\
 383    split : Displays source, disassembly and command windows.\n\
 384    regs  : Displays register window. If existing layout\n\
 385            is source/command or assembly/command, the \n\
 386            register window is displayed. If the\n\
 387            source/assembly/command (split) is displayed, \n\
 388            the register window is displayed with \n\
 389            the window that has current logical focus.\n"));
 390   set_cmd_completer (cmd, layout_completer);
 391 }
 392
 393
 394 /*************************
 395 ** STATIC LOCAL FUNCTIONS
 396 **************************/
 397
 398
 399 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA, or
 400    REGS. */
 401 enum tui_status
 402 tui_set_layout_by_name (const char *layout_name)
 403 {
 404   enum tui_status status = TUI_SUCCESS;
 405
 406   if (layout_name != (char *) NULL)
 407     {
 408       int i;
 409       char *buf_ptr;
 410       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 411       enum tui_layout_type cur_layout = tui_current_layout ();
 412       struct cleanup *old_chain;
 413
 414       buf_ptr = (char *) xstrdup (layout_name);
 415       for (i = 0; (i < strlen (layout_name)); i++)
 416         buf_ptr[i] = toupper (buf_ptr[i]);
 417       old_chain = make_cleanup (xfree, buf_ptr);
 418
 419       /* First check for ambiguous input.  */
 420       if (strlen (buf_ptr) <= 1 && *buf_ptr == 'S')
 421         {
 422           warning (_("Ambiguous command input."));
 423           status = TUI_FAILURE;
 424         }
 425       else
 426         {
 427           if (subset_compare (buf_ptr, "SRC"))
 428             new_layout = SRC_COMMAND;
 429           else if (subset_compare (buf_ptr, "ASM"))
 430             new_layout = DISASSEM_COMMAND;
 431           else if (subset_compare (buf_ptr, "SPLIT"))
 432             new_layout = SRC_DISASSEM_COMMAND;
 433           else if (subset_compare (buf_ptr, "REGS"))
 434             {
 435               if (cur_layout == SRC_COMMAND
 436                   || cur_layout == SRC_DATA_COMMAND)
 437                 new_layout = SRC_DATA_COMMAND;
 438               else
 439                 new_layout = DISASSEM_DATA_COMMAND;
 440             }
 441           else if (subset_compare (buf_ptr, "NEXT"))
 442             new_layout = next_layout ();
 443           else if (subset_compare (buf_ptr, "PREV"))
 444             new_layout = prev_layout ();
 445           else
 446             status = TUI_FAILURE;
 447
 448           if (status == TUI_SUCCESS)
 449             {
 450               /* Make sure the curses mode is enabled.  */
 451               tui_enable ();
 452               tui_set_layout (new_layout);
 453             }
 454         }
 455       do_cleanups (old_chain);
 456     }
 457   else
 458     status = TUI_FAILURE;
 459
 460   return status;
 461 }
 462
 463
 464 static void
 465 extract_display_start_addr (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
 466 {
 467   enum tui_layout_type cur_layout = tui_current_layout ();
 468   struct gdbarch *gdbarch = get_current_arch ();
 469   CORE_ADDR addr;
 470   CORE_ADDR pc;
 471   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 472
 473   switch (cur_layout)
 474     {
 475     case SRC_COMMAND:
 476     case SRC_DATA_COMMAND:
 477       gdbarch = TUI_SRC_WIN->detail.source_info.gdbarch;
 478       find_line_pc (cursal.symtab,
 479                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 480                     &pc);
 481       addr = pc;
 482       break;
 483     case DISASSEM_COMMAND:
 484     case SRC_DISASSEM_COMMAND:
 485     case DISASSEM_DATA_COMMAND:
 486       gdbarch = TUI_DISASM_WIN->detail.source_info.gdbarch;
 487       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 488       break;
 489     default:
 490       addr = 0;
 491       break;
 492     }
 493
 494   *gdbarch_p = gdbarch;
 495   *addr_p = addr;
 496 }
 497
 498
 499 static void
 500 tui_layout_command (char *arg, int from_tty)
 501 {
 502   /* Switch to the selected layout.  */
 503   if (tui_set_layout_by_name (arg) != TUI_SUCCESS)
 504     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 505
 506 }
 507
 508 /* Answer the previous layout to cycle to.  */
 509 static enum tui_layout_type
 510 next_layout (void)
 511 {
 512   int new_layout;
 513
 514   new_layout = tui_current_layout ();
 515   if (new_layout == UNDEFINED_LAYOUT)
 516     new_layout = SRC_COMMAND;
 517   else
 518     {
 519       new_layout++;
 520       if (new_layout == UNDEFINED_LAYOUT)
 521         new_layout = SRC_COMMAND;
 522     }
 523
 524   return (enum tui_layout_type) new_layout;
 525 }
 526
 527
 528 /* Answer the next layout to cycle to.  */
 529 static enum tui_layout_type
 530 prev_layout (void)
 531 {
 532   int new_layout;
 533
 534   new_layout = tui_current_layout ();
 535   if (new_layout == SRC_COMMAND)
 536     new_layout = DISASSEM_DATA_COMMAND;
 537   else
 538     {
 539       new_layout--;
 540       if (new_layout == UNDEFINED_LAYOUT)
 541         new_layout = DISASSEM_DATA_COMMAND;
 542     }
 543
 544   return (enum tui_layout_type) new_layout;
 545 }
 546
 547
 548
 549 static void
 550 make_command_window (struct tui_win_info **win_info_ptr,
 551                      int height, int origin_y)
 552 {
 553   *win_info_ptr = init_and_make_win (*win_info_ptr,
 554                                      CMD_WIN,
 555                                      height,
 556                                      tui_term_width (),
 557                                      0,
 558                                      origin_y,
 559                                      DONT_BOX_WINDOW);
 560
 561   (*win_info_ptr)->can_highlight = FALSE;
 562 }
 563
 564
 565 /* make_source_window().
 566  */
 567 static void
 568 make_source_window (struct tui_win_info **win_info_ptr,
 569                     int height, int origin_y)
 570 {
 571   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 572
 573   return;
 574 }                               /* make_source_window */
 575
 576
 577 /* make_disasm_window().
 578  */
 579 static void
 580 make_disasm_window (struct tui_win_info **win_info_ptr,
 581                     int height, int origin_y)
 582 {
 583   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 584
 585   return;
 586 }                               /* make_disasm_window */
 587
 588
 589 static void
 590 make_data_window (struct tui_win_info **win_info_ptr,
 591                   int height, int origin_y)
 592 {
 593   *win_info_ptr = init_and_make_win (*win_info_ptr,
 594                                      DATA_WIN,
 595                                      height,
 596                                      tui_term_width (),
 597                                      0,
 598                                      origin_y,
 599                                      BOX_WINDOW);
 600 }
 601
 602
 603
 604 /* Show the Source/Command layout.  */
 605 static void
 606 show_source_command (void)
 607 {
 608   show_source_or_disasm_and_command (SRC_COMMAND);
 609 }
 610
 611
 612 /* Show the Dissassem/Command layout.  */
 613 static void
 614 show_disasm_command (void)
 615 {
 616   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 617 }
 618
 619
 620 /* Show the Source/Disassem/Command layout.  */
 621 static void
 622 show_source_disasm_command (void)
 623 {
 624   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 625     {
 626       int cmd_height, src_height, asm_height;
 627
 628       if (TUI_CMD_WIN != NULL)
 629         cmd_height = TUI_CMD_WIN->generic.height;
 630       else
 631         cmd_height = tui_term_height () / 3;
 632
 633       src_height = (tui_term_height () - cmd_height) / 2;
 634       asm_height = tui_term_height () - (src_height + cmd_height);
 635
 636       if (TUI_SRC_WIN == NULL)
 637         make_source_window (&TUI_SRC_WIN, src_height, 0);
 638       else
 639         {
 640           init_gen_win_info (&TUI_SRC_WIN->generic,
 641                              TUI_SRC_WIN->generic.type,
 642                              src_height,
 643                              TUI_SRC_WIN->generic.width,
 644                              TUI_SRC_WIN->detail.source_info.execution_info->width,
 645                              0);
 646           TUI_SRC_WIN->can_highlight = TRUE;
 647           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 648                              EXEC_INFO_WIN,
 649                              src_height,
 650                              3,
 651                              0,
 652                              0);
 653           tui_make_visible (&TUI_SRC_WIN->generic);
 654           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 655           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 656         }
 657       if (TUI_SRC_WIN != NULL)
 658         {
 659           struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 660
 661           tui_show_source_content (TUI_SRC_WIN);
 662           if (TUI_DISASM_WIN == NULL)
 663             {
 664               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 665               locator = init_and_make_win (locator,
 666                                            LOCATOR_WIN,
 667                                            2 /* 1 */ ,
 668                                            tui_term_width (),
 669                                            0,
 670                                            (src_height + asm_height) - 1,
 671                                            DONT_BOX_WINDOW);
 672             }
 673           else
 674             {
 675               init_gen_win_info (locator,
 676                                  LOCATOR_WIN,
 677                                  2 /* 1 */ ,
 678                                  tui_term_width (),
 679                                  0,
 680                                  (src_height + asm_height) - 1);
 681               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 682               init_gen_win_info (&TUI_DISASM_WIN->generic,
 683                                  TUI_DISASM_WIN->generic.type,
 684                                  asm_height,
 685                                  TUI_DISASM_WIN->generic.width,
 686                                  TUI_DISASM_WIN->detail.source_info.execution_info->width,
 687                                  src_height - 1);
 688               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 689                                  EXEC_INFO_WIN,
 690                                  asm_height,
 691                                  3,
 692                                  0,
 693                                  src_height - 1);
 694               TUI_DISASM_WIN->can_highlight = TRUE;
 695               tui_make_visible (&TUI_DISASM_WIN->generic);
 696               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 697             }
 698           if (TUI_DISASM_WIN != NULL)
 699             {
 700               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 701               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 702               tui_make_visible (locator);
 703               tui_show_locator_content ();
 704               tui_show_source_content (TUI_DISASM_WIN);
 705
 706               if (TUI_CMD_WIN == NULL)
 707                 make_command_window (&TUI_CMD_WIN,
 708                                      cmd_height,
 709                                      tui_term_height () - cmd_height);
 710               else
 711                 {
 712                   init_gen_win_info (&TUI_CMD_WIN->generic,
 713                                      TUI_CMD_WIN->generic.type,
 714                                      TUI_CMD_WIN->generic.height,
 715                                      TUI_CMD_WIN->generic.width,
 716                                      0,
 717                                      TUI_CMD_WIN->generic.origin.y);
 718                   TUI_CMD_WIN->can_highlight = FALSE;
 719                   tui_make_visible (&TUI_CMD_WIN->generic);
 720                 }
 721               if (TUI_CMD_WIN != NULL)
 722                 tui_refresh_win (&TUI_CMD_WIN->generic);
 723             }
 724         }
 725       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 726     }
 727 }
 728
 729
 730 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 731    layout.  */
 732 static void
 733 show_data (enum tui_layout_type new_layout)
 734 {
 735   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 736   int src_height, data_height;
 737   enum tui_win_type win_type;
 738   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 739
 740
 741   data_height = total_height / 2;
 742   src_height = total_height - data_height;
 743   tui_make_all_invisible ();
 744   tui_make_invisible (locator);
 745   make_data_window (&TUI_DATA_WIN, data_height, 0);
 746   TUI_DATA_WIN->can_highlight = TRUE;
 747   if (new_layout == SRC_DATA_COMMAND)
 748     win_type = SRC_WIN;
 749   else
 750     win_type = DISASSEM_WIN;
 751   if (tui_win_list[win_type] == NULL)
 752     {
 753       if (win_type == SRC_WIN)
 754         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 755       else
 756         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 757       locator = init_and_make_win (locator,
 758                                    LOCATOR_WIN,
 759                                    2 /* 1 */ ,
 760                                    tui_term_width (),
 761                                    0,
 762                                    total_height - 1,
 763                                    DONT_BOX_WINDOW);
 764     }
 765   else
 766     {
 767       init_gen_win_info (&tui_win_list[win_type]->generic,
 768                          tui_win_list[win_type]->generic.type,
 769                          src_height,
 770                          tui_win_list[win_type]->generic.width,
 771                          tui_win_list[win_type]->detail.source_info.execution_info->width,
 772                          data_height - 1);
 773       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 774                          EXEC_INFO_WIN,
 775                          src_height,
 776                          3,
 777                          0,
 778                          data_height - 1);
 779       tui_make_visible (&tui_win_list[win_type]->generic);
 780       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 781       init_gen_win_info (locator,
 782                          LOCATOR_WIN,
 783                          2 /* 1 */ ,
 784                          tui_term_width (),
 785                          0,
 786                          total_height - 1);
 787     }
 788   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 789   tui_make_visible (locator);
 790   tui_show_locator_content ();
 791   tui_add_to_source_windows (tui_win_list[win_type]);
 792   tui_set_current_layout_to (new_layout);
 793 }
 794
 795 /* init_gen_win_info().
 796  */
 797 static void
 798 init_gen_win_info (struct tui_gen_win_info *win_info,
 799                    enum tui_win_type type,
 800                    int height, int width,
 801                    int origin_x, int origin_y)
 802 {
 803   int h = height;
 804
 805   win_info->type = type;
 806   win_info->width = width;
 807   win_info->height = h;
 808   if (h > 1)
 809     {
 810       win_info->viewport_height = h - 1;
 811       if (win_info->type != CMD_WIN)
 812         win_info->viewport_height--;
 813     }
 814   else
 815     win_info->viewport_height = 1;
 816   win_info->origin.x = origin_x;
 817   win_info->origin.y = origin_y;
 818
 819   return;
 820 }                               /* init_gen_win_info */
 821
 822 /* init_and_make_win().
 823  */
 824 static void *
 825 init_and_make_win (void *opaque_win_info,
 826                    enum tui_win_type win_type,
 827                    int height, int width,
 828                    int origin_x, int origin_y,
 829                    int box_it)
 830 {
 831   struct tui_gen_win_info *generic;
 832
 833   if (opaque_win_info == NULL)
 834     {
 835       if (tui_win_is_auxillary (win_type))
 836         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 837       else
 838         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 839     }
 840   if (tui_win_is_auxillary (win_type))
 841     generic = (struct tui_gen_win_info *) opaque_win_info;
 842   else
 843     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 844
 845   if (opaque_win_info != NULL)
 846     {
 847       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 848       if (!tui_win_is_auxillary (win_type))
 849         {
 850           if (generic->type == CMD_WIN)
 851             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 852           else
 853             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 854         }
 855       tui_make_window (generic, box_it);
 856     }
 857   return opaque_win_info;
 858 }
 859
 860
 861 static void
 862 make_source_or_disasm_window (struct tui_win_info **win_info_ptr,
 863                               enum tui_win_type type,
 864                               int height, int origin_y)
 865 {
 866   struct tui_gen_win_info *execution_info = (struct tui_gen_win_info *) NULL;
 867
 868   /* Create the exeuction info window.  */
 869   if (type == SRC_WIN)
 870     execution_info = tui_source_exec_info_win_ptr ();
 871   else
 872     execution_info = tui_disassem_exec_info_win_ptr ();
 873   execution_info = init_and_make_win (execution_info,
 874                                       EXEC_INFO_WIN,
 875                                       height,
 876                                       3,
 877                                       0,
 878                                       origin_y,
 879                                       DONT_BOX_WINDOW);
 880
 881   /* Now create the source window.  */
 882   *win_info_ptr = init_and_make_win (*win_info_ptr,
 883                                      type,
 884                                      height,
 885                                      tui_term_width () - execution_info->width,
 886                                      execution_info->width,
 887                                      origin_y,
 888                                      BOX_WINDOW);
 889
 890   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 891 }
 892
 893
 894 /* Show the Source/Command or the Disassem layout.  */
 895 static void
 896 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 897 {
 898   if (tui_current_layout () != layout_type)
 899     {
 900       struct tui_win_info **win_info_ptr;
 901       int src_height, cmd_height;
 902       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 903
 904       if (TUI_CMD_WIN != NULL)
 905         cmd_height = TUI_CMD_WIN->generic.height;
 906       else
 907         cmd_height = tui_term_height () / 3;
 908       src_height = tui_term_height () - cmd_height;
 909
 910       if (layout_type == SRC_COMMAND)
 911         win_info_ptr = &TUI_SRC_WIN;
 912       else
 913         win_info_ptr = &TUI_DISASM_WIN;
 914
 915       if ((*win_info_ptr) == NULL)
 916         {
 917           if (layout_type == SRC_COMMAND)
 918             make_source_window (win_info_ptr, src_height - 1, 0);
 919           else
 920             make_disasm_window (win_info_ptr, src_height - 1, 0);
 921           locator = init_and_make_win (locator,
 922                                        LOCATOR_WIN,
 923                                        2 /* 1 */ ,
 924                                        tui_term_width (),
 925                                        0,
 926                                        src_height - 1,
 927                                        DONT_BOX_WINDOW);
 928         }
 929       else
 930         {
 931           init_gen_win_info (locator,
 932                              LOCATOR_WIN,
 933                              2 /* 1 */ ,
 934                              tui_term_width (),
 935                              0,
 936                              src_height - 1);
 937           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
 938           init_gen_win_info (&(*win_info_ptr)->generic,
 939                              (*win_info_ptr)->generic.type,
 940                              src_height - 1,
 941                              (*win_info_ptr)->generic.width,
 942                              (*win_info_ptr)->detail.source_info.execution_info->width,
 943                              0);
 944           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
 945                              EXEC_INFO_WIN,
 946                              src_height - 1,
 947                              3,
 948                              0,
 949                              0);
 950           (*win_info_ptr)->can_highlight = TRUE;
 951           tui_make_visible (&(*win_info_ptr)->generic);
 952           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
 953         }
 954       if ((*win_info_ptr) != NULL)
 955         {
 956           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
 957           tui_make_visible (locator);
 958           tui_show_locator_content ();
 959           tui_show_source_content (*win_info_ptr);
 960
 961           if (TUI_CMD_WIN == NULL)
 962             {
 963               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
 964               tui_refresh_win (&TUI_CMD_WIN->generic);
 965             }
 966           else
 967             {
 968               init_gen_win_info (&TUI_CMD_WIN->generic,
 969                                  TUI_CMD_WIN->generic.type,
 970                                  TUI_CMD_WIN->generic.height,
 971                                  TUI_CMD_WIN->generic.width,
 972                                  TUI_CMD_WIN->generic.origin.x,
 973                                  TUI_CMD_WIN->generic.origin.y);
 974               TUI_CMD_WIN->can_highlight = FALSE;
 975               tui_make_visible (&TUI_CMD_WIN->generic);
 976             }
 977         }
 978       tui_set_current_layout_to (layout_type);
 979     }
 980 }