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 void
 371 _initialize_tui_layout (void)
 372 {
 373   struct cmd_list_element *cmd;
 374
 375   cmd = add_com ("layout", class_tui, tui_layout_command, _("\
 376 Change the layout of windows.\n\
 377 Usage: layout prev | next | <layout_name> \n\
 378 Layout names are:\n\
 379    src   : Displays source and command windows.\n\
 380    asm   : Displays disassembly and command windows.\n\
 381    split : Displays source, disassembly and command windows.\n\
 382    regs  : Displays register window. If existing layout\n\
 383            is source/command or assembly/command, the \n\
 384            register window is displayed. If the\n\
 385            source/assembly/command (split) is displayed, \n\
 386            the register window is displayed with \n\
 387            the window that has current logical focus.\n"));
 388   set_cmd_completer (cmd, layout_completer);
 389 }
 390
 391
 392 /*************************
 393 ** STATIC LOCAL FUNCTIONS
 394 **************************/
 395
 396
 397 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA, or
 398    REGS. */
 399 enum tui_status
 400 tui_set_layout_by_name (const char *layout_name)
 401 {
 402   enum tui_status status = TUI_SUCCESS;
 403
 404   if (layout_name != (char *) NULL)
 405     {
 406       int i;
 407       char *buf_ptr;
 408       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 409       enum tui_layout_type cur_layout = tui_current_layout ();
 410       struct cleanup *old_chain;
 411
 412       buf_ptr = (char *) xstrdup (layout_name);
 413       for (i = 0; (i < strlen (layout_name)); i++)
 414         buf_ptr[i] = toupper (buf_ptr[i]);
 415       old_chain = make_cleanup (xfree, buf_ptr);
 416
 417       /* First check for ambiguous input.  */
 418       if (strlen (buf_ptr) <= 1 && *buf_ptr == 'S')
 419         {
 420           warning (_("Ambiguous command input."));
 421           status = TUI_FAILURE;
 422         }
 423       else
 424         {
 425           if (subset_compare (buf_ptr, "SRC"))
 426             new_layout = SRC_COMMAND;
 427           else if (subset_compare (buf_ptr, "ASM"))
 428             new_layout = DISASSEM_COMMAND;
 429           else if (subset_compare (buf_ptr, "SPLIT"))
 430             new_layout = SRC_DISASSEM_COMMAND;
 431           else if (subset_compare (buf_ptr, "REGS"))
 432             {
 433               if (cur_layout == SRC_COMMAND
 434                   || cur_layout == SRC_DATA_COMMAND)
 435                 new_layout = SRC_DATA_COMMAND;
 436               else
 437                 new_layout = DISASSEM_DATA_COMMAND;
 438             }
 439           else if (subset_compare (buf_ptr, "NEXT"))
 440             new_layout = next_layout ();
 441           else if (subset_compare (buf_ptr, "PREV"))
 442             new_layout = prev_layout ();
 443           else
 444             status = TUI_FAILURE;
 445
 446           if (status == TUI_SUCCESS)
 447             {
 448               /* Make sure the curses mode is enabled.  */
 449               tui_enable ();
 450               tui_set_layout (new_layout);
 451             }
 452         }
 453       do_cleanups (old_chain);
 454     }
 455   else
 456     status = TUI_FAILURE;
 457
 458   return status;
 459 }
 460
 461
 462 static void
 463 extract_display_start_addr (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
 464 {
 465   enum tui_layout_type cur_layout = tui_current_layout ();
 466   struct gdbarch *gdbarch = get_current_arch ();
 467   CORE_ADDR addr;
 468   CORE_ADDR pc;
 469   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 470
 471   switch (cur_layout)
 472     {
 473     case SRC_COMMAND:
 474     case SRC_DATA_COMMAND:
 475       gdbarch = TUI_SRC_WIN->detail.source_info.gdbarch;
 476       find_line_pc (cursal.symtab,
 477                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 478                     &pc);
 479       addr = pc;
 480       break;
 481     case DISASSEM_COMMAND:
 482     case SRC_DISASSEM_COMMAND:
 483     case DISASSEM_DATA_COMMAND:
 484       gdbarch = TUI_DISASM_WIN->detail.source_info.gdbarch;
 485       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 486       break;
 487     default:
 488       addr = 0;
 489       break;
 490     }
 491
 492   *gdbarch_p = gdbarch;
 493   *addr_p = addr;
 494 }
 495
 496
 497 static void
 498 tui_layout_command (char *arg, int from_tty)
 499 {
 500   /* Switch to the selected layout.  */
 501   if (tui_set_layout_by_name (arg) != TUI_SUCCESS)
 502     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 503
 504 }
 505
 506 /* Answer the previous layout to cycle to.  */
 507 static enum tui_layout_type
 508 next_layout (void)
 509 {
 510   int new_layout;
 511
 512   new_layout = tui_current_layout ();
 513   if (new_layout == UNDEFINED_LAYOUT)
 514     new_layout = SRC_COMMAND;
 515   else
 516     {
 517       new_layout++;
 518       if (new_layout == UNDEFINED_LAYOUT)
 519         new_layout = SRC_COMMAND;
 520     }
 521
 522   return (enum tui_layout_type) new_layout;
 523 }
 524
 525
 526 /* Answer the next layout to cycle to.  */
 527 static enum tui_layout_type
 528 prev_layout (void)
 529 {
 530   int new_layout;
 531
 532   new_layout = tui_current_layout ();
 533   if (new_layout == SRC_COMMAND)
 534     new_layout = DISASSEM_DATA_COMMAND;
 535   else
 536     {
 537       new_layout--;
 538       if (new_layout == UNDEFINED_LAYOUT)
 539         new_layout = DISASSEM_DATA_COMMAND;
 540     }
 541
 542   return (enum tui_layout_type) new_layout;
 543 }
 544
 545
 546
 547 static void
 548 make_command_window (struct tui_win_info **win_info_ptr,
 549                      int height, int origin_y)
 550 {
 551   *win_info_ptr
 552     = (struct tui_win_info *) init_and_make_win (*win_info_ptr,
 553                                                  CMD_WIN,
 554                                                  height,
 555                                                  tui_term_width (),
 556                                                  0,
 557                                                  origin_y,
 558                                                  DONT_BOX_WINDOW);
 559
 560   (*win_info_ptr)->can_highlight = FALSE;
 561 }
 562
 563
 564 /* make_source_window().
 565  */
 566 static void
 567 make_source_window (struct tui_win_info **win_info_ptr,
 568                     int height, int origin_y)
 569 {
 570   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 571
 572   return;
 573 }                               /* make_source_window */
 574
 575
 576 /* make_disasm_window().
 577  */
 578 static void
 579 make_disasm_window (struct tui_win_info **win_info_ptr,
 580                     int height, int origin_y)
 581 {
 582   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 583
 584   return;
 585 }                               /* make_disasm_window */
 586
 587
 588 static void
 589 make_data_window (struct tui_win_info **win_info_ptr,
 590                   int height, int origin_y)
 591 {
 592   *win_info_ptr
 593     = (struct tui_win_info *) 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
 666                 = ((struct tui_gen_win_info *)
 667                    init_and_make_win (locator,
 668                                       LOCATOR_WIN,
 669                                       2 /* 1 */ ,
 670                                       tui_term_width (),
 671                                       0,
 672                                       (src_height + asm_height) - 1,
 673                                       DONT_BOX_WINDOW));
 674             }
 675           else
 676             {
 677               init_gen_win_info (locator,
 678                                  LOCATOR_WIN,
 679                                  2 /* 1 */ ,
 680                                  tui_term_width (),
 681                                  0,
 682                                  (src_height + asm_height) - 1);
 683               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 684               init_gen_win_info (&TUI_DISASM_WIN->generic,
 685                                  TUI_DISASM_WIN->generic.type,
 686                                  asm_height,
 687                                  TUI_DISASM_WIN->generic.width,
 688                                  TUI_DISASM_WIN->detail.source_info.execution_info->width,
 689                                  src_height - 1);
 690               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 691                                  EXEC_INFO_WIN,
 692                                  asm_height,
 693                                  3,
 694                                  0,
 695                                  src_height - 1);
 696               TUI_DISASM_WIN->can_highlight = TRUE;
 697               tui_make_visible (&TUI_DISASM_WIN->generic);
 698               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 699             }
 700           if (TUI_DISASM_WIN != NULL)
 701             {
 702               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 703               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 704               tui_make_visible (locator);
 705               tui_show_locator_content ();
 706               tui_show_source_content (TUI_DISASM_WIN);
 707
 708               if (TUI_CMD_WIN == NULL)
 709                 make_command_window (&TUI_CMD_WIN,
 710                                      cmd_height,
 711                                      tui_term_height () - cmd_height);
 712               else
 713                 {
 714                   init_gen_win_info (&TUI_CMD_WIN->generic,
 715                                      TUI_CMD_WIN->generic.type,
 716                                      TUI_CMD_WIN->generic.height,
 717                                      TUI_CMD_WIN->generic.width,
 718                                      0,
 719                                      TUI_CMD_WIN->generic.origin.y);
 720                   TUI_CMD_WIN->can_highlight = FALSE;
 721                   tui_make_visible (&TUI_CMD_WIN->generic);
 722                 }
 723               if (TUI_CMD_WIN != NULL)
 724                 tui_refresh_win (&TUI_CMD_WIN->generic);
 725             }
 726         }
 727       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 728     }
 729 }
 730
 731
 732 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 733    layout.  */
 734 static void
 735 show_data (enum tui_layout_type new_layout)
 736 {
 737   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 738   int src_height, data_height;
 739   enum tui_win_type win_type;
 740   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 741
 742
 743   data_height = total_height / 2;
 744   src_height = total_height - data_height;
 745   tui_make_all_invisible ();
 746   tui_make_invisible (locator);
 747   make_data_window (&TUI_DATA_WIN, data_height, 0);
 748   TUI_DATA_WIN->can_highlight = TRUE;
 749   if (new_layout == SRC_DATA_COMMAND)
 750     win_type = SRC_WIN;
 751   else
 752     win_type = DISASSEM_WIN;
 753   if (tui_win_list[win_type] == NULL)
 754     {
 755       if (win_type == SRC_WIN)
 756         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 757       else
 758         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 759       locator
 760         = ((struct tui_gen_win_info *)
 761            init_and_make_win (locator,
 762                               LOCATOR_WIN,
 763                               2 /* 1 */ ,
 764                               tui_term_width (),
 765                               0,
 766                               total_height - 1,
 767                               DONT_BOX_WINDOW));
 768     }
 769   else
 770     {
 771       init_gen_win_info (&tui_win_list[win_type]->generic,
 772                          tui_win_list[win_type]->generic.type,
 773                          src_height,
 774                          tui_win_list[win_type]->generic.width,
 775                          tui_win_list[win_type]->detail.source_info.execution_info->width,
 776                          data_height - 1);
 777       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 778                          EXEC_INFO_WIN,
 779                          src_height,
 780                          3,
 781                          0,
 782                          data_height - 1);
 783       tui_make_visible (&tui_win_list[win_type]->generic);
 784       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 785       init_gen_win_info (locator,
 786                          LOCATOR_WIN,
 787                          2 /* 1 */ ,
 788                          tui_term_width (),
 789                          0,
 790                          total_height - 1);
 791     }
 792   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 793   tui_make_visible (locator);
 794   tui_show_locator_content ();
 795   tui_add_to_source_windows (tui_win_list[win_type]);
 796   tui_set_current_layout_to (new_layout);
 797 }
 798
 799 /* init_gen_win_info().
 800  */
 801 static void
 802 init_gen_win_info (struct tui_gen_win_info *win_info,
 803                    enum tui_win_type type,
 804                    int height, int width,
 805                    int origin_x, int origin_y)
 806 {
 807   int h = height;
 808
 809   win_info->type = type;
 810   win_info->width = width;
 811   win_info->height = h;
 812   if (h > 1)
 813     {
 814       win_info->viewport_height = h - 1;
 815       if (win_info->type != CMD_WIN)
 816         win_info->viewport_height--;
 817     }
 818   else
 819     win_info->viewport_height = 1;
 820   win_info->origin.x = origin_x;
 821   win_info->origin.y = origin_y;
 822
 823   return;
 824 }                               /* init_gen_win_info */
 825
 826 /* init_and_make_win().
 827  */
 828 static void *
 829 init_and_make_win (void *opaque_win_info,
 830                    enum tui_win_type win_type,
 831                    int height, int width,
 832                    int origin_x, int origin_y,
 833                    int box_it)
 834 {
 835   struct tui_gen_win_info *generic;
 836
 837   if (opaque_win_info == NULL)
 838     {
 839       if (tui_win_is_auxillary (win_type))
 840         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 841       else
 842         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 843     }
 844   if (tui_win_is_auxillary (win_type))
 845     generic = (struct tui_gen_win_info *) opaque_win_info;
 846   else
 847     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 848
 849   if (opaque_win_info != NULL)
 850     {
 851       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 852       if (!tui_win_is_auxillary (win_type))
 853         {
 854           if (generic->type == CMD_WIN)
 855             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 856           else
 857             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 858         }
 859       tui_make_window (generic, box_it);
 860     }
 861   return opaque_win_info;
 862 }
 863
 864
 865 static void
 866 make_source_or_disasm_window (struct tui_win_info **win_info_ptr,
 867                               enum tui_win_type type,
 868                               int height, int origin_y)
 869 {
 870   struct tui_gen_win_info *execution_info = NULL;
 871
 872   /* Create the exeuction info window.  */
 873   if (type == SRC_WIN)
 874     execution_info = tui_source_exec_info_win_ptr ();
 875   else
 876     execution_info = tui_disassem_exec_info_win_ptr ();
 877   execution_info
 878     = ((struct tui_gen_win_info *)
 879        init_and_make_win (execution_info,
 880                           EXEC_INFO_WIN,
 881                           height,
 882                           3,
 883                           0,
 884                           origin_y,
 885                           DONT_BOX_WINDOW));
 886
 887   /* Now create the source window.  */
 888   *win_info_ptr
 889     = ((struct tui_win_info *)
 890        init_and_make_win (*win_info_ptr,
 891                           type,
 892                           height,
 893                           tui_term_width () - execution_info->width,
 894                           execution_info->width,
 895                           origin_y,
 896                           BOX_WINDOW));
 897
 898   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 899 }
 900
 901
 902 /* Show the Source/Command or the Disassem layout.  */
 903 static void
 904 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 905 {
 906   if (tui_current_layout () != layout_type)
 907     {
 908       struct tui_win_info **win_info_ptr;
 909       int src_height, cmd_height;
 910       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 911
 912       if (TUI_CMD_WIN != NULL)
 913         cmd_height = TUI_CMD_WIN->generic.height;
 914       else
 915         cmd_height = tui_term_height () / 3;
 916       src_height = tui_term_height () - cmd_height;
 917
 918       if (layout_type == SRC_COMMAND)
 919         win_info_ptr = &TUI_SRC_WIN;
 920       else
 921         win_info_ptr = &TUI_DISASM_WIN;
 922
 923       if ((*win_info_ptr) == NULL)
 924         {
 925           if (layout_type == SRC_COMMAND)
 926             make_source_window (win_info_ptr, src_height - 1, 0);
 927           else
 928             make_disasm_window (win_info_ptr, src_height - 1, 0);
 929           locator
 930             = ((struct tui_gen_win_info *)
 931                init_and_make_win (locator,
 932                                   LOCATOR_WIN,
 933                                   2 /* 1 */ ,
 934                                   tui_term_width (),
 935                                   0,
 936                                   src_height - 1,
 937                                   DONT_BOX_WINDOW));
 938         }
 939       else
 940         {
 941           init_gen_win_info (locator,
 942                              LOCATOR_WIN,
 943                              2 /* 1 */ ,
 944                              tui_term_width (),
 945                              0,
 946                              src_height - 1);
 947           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
 948           init_gen_win_info (&(*win_info_ptr)->generic,
 949                              (*win_info_ptr)->generic.type,
 950                              src_height - 1,
 951                              (*win_info_ptr)->generic.width,
 952                              (*win_info_ptr)->detail.source_info.execution_info->width,
 953                              0);
 954           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
 955                              EXEC_INFO_WIN,
 956                              src_height - 1,
 957                              3,
 958                              0,
 959                              0);
 960           (*win_info_ptr)->can_highlight = TRUE;
 961           tui_make_visible (&(*win_info_ptr)->generic);
 962           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
 963         }
 964       if ((*win_info_ptr) != NULL)
 965         {
 966           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
 967           tui_make_visible (locator);
 968           tui_show_locator_content ();
 969           tui_show_source_content (*win_info_ptr);
 970
 971           if (TUI_CMD_WIN == NULL)
 972             {
 973               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
 974               tui_refresh_win (&TUI_CMD_WIN->generic);
 975             }
 976           else
 977             {
 978               init_gen_win_info (&TUI_CMD_WIN->generic,
 979                                  TUI_CMD_WIN->generic.type,
 980                                  TUI_CMD_WIN->generic.height,
 981                                  TUI_CMD_WIN->generic.width,
 982                                  TUI_CMD_WIN->generic.origin.x,
 983                                  TUI_CMD_WIN->generic.origin.y);
 984               TUI_CMD_WIN->can_highlight = FALSE;
 985               tui_make_visible (&TUI_CMD_WIN->generic);
 986             }
 987         }
 988       tui_set_current_layout_to (layout_type);
 989     }
 990 }