gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007
   4    Free Software Foundation, Inc.
   5
   6    Contributed by Hewlett-Packard Company.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23    Boston, MA 02110-1301, USA.  */
  24
  25 #include "defs.h"
  26 #include "command.h"
  27 #include "symtab.h"
  28 #include "frame.h"
  29 #include "source.h"
  30 #include <ctype.h>
  31
  32 #include "tui/tui.h"
  33 #include "tui/tui-data.h"
  34 #include "tui/tui-windata.h"
  35 #include "tui/tui-wingeneral.h"
  36 #include "tui/tui-stack.h"
  37 #include "tui/tui-regs.h"
  38 #include "tui/tui-win.h"
  39 #include "tui/tui-winsource.h"
  40 #include "tui/tui-disasm.h"
  41
  42 #include "gdb_string.h"
  43 #include "gdb_curses.h"
  44
  45 /*******************************
  46 ** Static Local Decls
  47 ********************************/
  48 static void show_layout (enum tui_layout_type);
  49 static void init_gen_win_info (struct tui_gen_win_info *, enum tui_win_type, int, int, int, int);
  50 static void *init_and_make_win (void *, enum tui_win_type, 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 * *, enum tui_win_type, int, int);
  53 static void make_command_window (struct tui_win_info * *, int, int);
  54 static void make_source_window (struct tui_win_info * *, int, int);
  55 static void make_disasm_window (struct tui_win_info * *, int, int);
  56 static void make_data_window (struct tui_win_info * *, int, int);
  57 static void show_source_command (void);
  58 static void show_disasm_command (void);
  59 static void show_source_disasm_command (void);
  60 static void show_data (enum tui_layout_type);
  61 static enum tui_layout_type next_layout (void);
  62 static enum tui_layout_type prev_layout (void);
  63 static void tui_layout_command (char *, int);
  64 static void tui_toggle_layout_command (char *, int);
  65 static void tui_toggle_split_layout_command (char *, int);
  66 static CORE_ADDR extract_display_start_addr (void);
  67 static void tui_handle_xdb_layout (struct tui_layout_def *);
  68
  69
  70 /***************************************
  71 ** DEFINITIONS
  72 ***************************************/
  73
  74 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
  75
  76 /* Show the screen layout defined.  */
  77 static void
  78 show_layout (enum tui_layout_type layout)
  79 {
  80   enum tui_layout_type cur_layout = tui_current_layout ();
  81
  82   if (layout != cur_layout)
  83     {
  84       /*
  85          ** Since the new layout may cause changes in window size, we
  86          ** should free the content and reallocate on next display of
  87          ** source/asm
  88        */
  89       tui_free_all_source_wins_content ();
  90       tui_clear_source_windows ();
  91       if (layout == SRC_DATA_COMMAND || layout == DISASSEM_DATA_COMMAND)
  92         {
  93           show_data (layout);
  94           tui_refresh_all (tui_win_list);
  95         }
  96       else
  97         {
  98           /* First make the current layout be invisible */
  99           tui_make_all_invisible ();
 100           tui_make_invisible (tui_locator_win_info_ptr ());
 101
 102           switch (layout)
 103             {
 104               /* Now show the new layout */
 105             case SRC_COMMAND:
 106               show_source_command ();
 107               tui_add_to_source_windows (TUI_SRC_WIN);
 108               break;
 109             case DISASSEM_COMMAND:
 110               show_disasm_command ();
 111               tui_add_to_source_windows (TUI_DISASM_WIN);
 112               break;
 113             case SRC_DISASSEM_COMMAND:
 114               show_source_disasm_command ();
 115               tui_add_to_source_windows (TUI_SRC_WIN);
 116               tui_add_to_source_windows (TUI_DISASM_WIN);
 117               break;
 118             default:
 119               break;
 120             }
 121         }
 122     }
 123 }
 124
 125
 126 /* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
 127    SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.
 128    If the layout is SRC_DATA_COMMAND, DISASSEM_DATA_COMMAND, or
 129    UNDEFINED_LAYOUT, then the data window is populated according to
 130    regs_display_type.  */
 131 enum tui_status
 132 tui_set_layout (enum tui_layout_type layout_type,
 133                 enum tui_register_display_type regs_display_type)
 134 {
 135   enum tui_status status = TUI_SUCCESS;
 136
 137   if (layout_type != UNDEFINED_LAYOUT || regs_display_type != TUI_UNDEFINED_REGS)
 138     {
 139       enum tui_layout_type cur_layout = tui_current_layout (), new_layout = UNDEFINED_LAYOUT;
 140       int regs_populate = FALSE;
 141       CORE_ADDR addr = extract_display_start_addr ();
 142       struct tui_win_info * win_with_focus = tui_win_with_focus ();
 143       struct tui_layout_def * layout_def = tui_layout_def ();
 144
 145
 146       if (layout_type == UNDEFINED_LAYOUT &&
 147           regs_display_type != TUI_UNDEFINED_REGS)
 148         {
 149           if (cur_layout == SRC_DISASSEM_COMMAND)
 150             new_layout = DISASSEM_DATA_COMMAND;
 151           else if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
 152             new_layout = SRC_DATA_COMMAND;
 153           else if (cur_layout == DISASSEM_COMMAND ||
 154                    cur_layout == DISASSEM_DATA_COMMAND)
 155             new_layout = DISASSEM_DATA_COMMAND;
 156         }
 157       else
 158         new_layout = layout_type;
 159
 160       regs_populate = (new_layout == SRC_DATA_COMMAND ||
 161                       new_layout == DISASSEM_DATA_COMMAND ||
 162                       regs_display_type != TUI_UNDEFINED_REGS);
 163       if (new_layout != cur_layout || regs_display_type != TUI_UNDEFINED_REGS)
 164         {
 165           if (new_layout != cur_layout)
 166             {
 167               show_layout (new_layout);
 168               /*
 169                  ** Now determine where focus should be
 170                */
 171               if (win_with_focus != TUI_CMD_WIN)
 172                 {
 173                   switch (new_layout)
 174                     {
 175                     case SRC_COMMAND:
 176                       tui_set_win_focus_to (TUI_SRC_WIN);
 177                       layout_def->display_mode = SRC_WIN;
 178                       layout_def->split = FALSE;
 179                       break;
 180                     case DISASSEM_COMMAND:
 181                       /* the previous layout was not showing
 182                          ** code. this can happen if there is no
 183                          ** source available:
 184                          ** 1. if the source file is in another dir OR
 185                          ** 2. if target was compiled without -g
 186                          ** We still want to show the assembly though!
 187                        */
 188                       addr = tui_get_begin_asm_address ();
 189                       tui_set_win_focus_to (TUI_DISASM_WIN);
 190                       layout_def->display_mode = DISASSEM_WIN;
 191                       layout_def->split = FALSE;
 192                       break;
 193                     case SRC_DISASSEM_COMMAND:
 194                       /* the previous layout was not showing
 195                          ** code. this can happen if there is no
 196                          ** source available:
 197                          ** 1. if the source file is in another dir OR
 198                          ** 2. if target was compiled without -g
 199                          ** We still want to show the assembly though!
 200                        */
 201                       addr = tui_get_begin_asm_address ();
 202                       if (win_with_focus == TUI_SRC_WIN)
 203                         tui_set_win_focus_to (TUI_SRC_WIN);
 204                       else
 205                         tui_set_win_focus_to (TUI_DISASM_WIN);
 206                       layout_def->split = TRUE;
 207                       break;
 208                     case SRC_DATA_COMMAND:
 209                       if (win_with_focus != TUI_DATA_WIN)
 210                         tui_set_win_focus_to (TUI_SRC_WIN);
 211                       else
 212                         tui_set_win_focus_to (TUI_DATA_WIN);
 213                       layout_def->display_mode = SRC_WIN;
 214                       layout_def->split = FALSE;
 215                       break;
 216                     case DISASSEM_DATA_COMMAND:
 217                       /* the previous layout was not showing
 218                          ** code. this can happen if there is no
 219                          ** source available:
 220                          ** 1. if the source file is in another dir OR
 221                          ** 2. if target was compiled without -g
 222                          ** We still want to show the assembly though!
 223                        */
 224                       addr = tui_get_begin_asm_address ();
 225                       if (win_with_focus != TUI_DATA_WIN)
 226                         tui_set_win_focus_to (TUI_DISASM_WIN);
 227                       else
 228                         tui_set_win_focus_to (TUI_DATA_WIN);
 229                       layout_def->display_mode = DISASSEM_WIN;
 230                       layout_def->split = FALSE;
 231                       break;
 232                     default:
 233                       break;
 234                     }
 235                 }
 236               /*
 237                * Now update the window content.
 238                */
 239               if (!regs_populate &&
 240                   (new_layout == SRC_DATA_COMMAND ||
 241                    new_layout == DISASSEM_DATA_COMMAND))
 242                 tui_display_all_data ();
 243
 244               tui_update_source_windows_with_addr (addr);
 245             }
 246           if (regs_populate)
 247             {
 248               tui_show_registers (TUI_DATA_WIN->detail.data_display_info.current_group);
 249             }
 250         }
 251     }
 252   else
 253     status = TUI_FAILURE;
 254
 255   return status;
 256 }
 257
 258 /* Add the specified window to the layout in a logical way.  This
 259    means setting up the most logical layout given the window to be
 260    added.  */
 261 void
 262 tui_add_win_to_layout (enum tui_win_type type)
 263 {
 264   enum tui_layout_type cur_layout = tui_current_layout ();
 265
 266   switch (type)
 267     {
 268     case SRC_WIN:
 269       if (cur_layout != SRC_COMMAND &&
 270           cur_layout != SRC_DISASSEM_COMMAND &&
 271           cur_layout != SRC_DATA_COMMAND)
 272         {
 273           tui_clear_source_windows_detail ();
 274           if (cur_layout == DISASSEM_DATA_COMMAND)
 275             show_layout (SRC_DATA_COMMAND);
 276           else
 277             show_layout (SRC_COMMAND);
 278         }
 279       break;
 280     case DISASSEM_WIN:
 281       if (cur_layout != DISASSEM_COMMAND &&
 282           cur_layout != SRC_DISASSEM_COMMAND &&
 283           cur_layout != DISASSEM_DATA_COMMAND)
 284         {
 285           tui_clear_source_windows_detail ();
 286           if (cur_layout == SRC_DATA_COMMAND)
 287             show_layout (DISASSEM_DATA_COMMAND);
 288           else
 289             show_layout (DISASSEM_COMMAND);
 290         }
 291       break;
 292     case DATA_WIN:
 293       if (cur_layout != SRC_DATA_COMMAND &&
 294           cur_layout != DISASSEM_DATA_COMMAND)
 295         {
 296           if (cur_layout == DISASSEM_COMMAND)
 297             show_layout (DISASSEM_DATA_COMMAND);
 298           else
 299             show_layout (SRC_DATA_COMMAND);
 300         }
 301       break;
 302     default:
 303       break;
 304     }
 305 }
 306
 307
 308 /* Answer the height of a window.  If it hasn't been created yet,
 309    answer what the height of a window would be based upon its type and
 310    the layout.  */
 311 int
 312 tui_default_win_height (enum tui_win_type type, enum tui_layout_type layout)
 313 {
 314   int h;
 315
 316   if (tui_win_list[type] != (struct tui_win_info *) NULL)
 317     h = tui_win_list[type]->generic.height;
 318   else
 319     {
 320       switch (layout)
 321         {
 322         case SRC_COMMAND:
 323         case DISASSEM_COMMAND:
 324           if (TUI_CMD_WIN == NULL)
 325             h = tui_term_height () / 2;
 326           else
 327             h = tui_term_height () - TUI_CMD_WIN->generic.height;
 328           break;
 329         case SRC_DISASSEM_COMMAND:
 330         case SRC_DATA_COMMAND:
 331         case DISASSEM_DATA_COMMAND:
 332           if (TUI_CMD_WIN == NULL)
 333             h = tui_term_height () / 3;
 334           else
 335             h = (tui_term_height () - TUI_CMD_WIN->generic.height) / 2;
 336           break;
 337         default:
 338           h = 0;
 339           break;
 340         }
 341     }
 342
 343   return h;
 344 }
 345
 346
 347 /* Answer the height of a window.  If it hasn't been created yet,
 348    answer what the height of a window would be based upon its type and
 349    the layout.  */
 350 int
 351 tui_default_win_viewport_height (enum tui_win_type type,
 352                                  enum tui_layout_type layout)
 353 {
 354   int h;
 355
 356   h = tui_default_win_height (type, layout);
 357
 358   if (tui_win_list[type] == TUI_CMD_WIN)
 359     h -= 1;
 360   else
 361     h -= 2;
 362
 363   return h;
 364 }
 365
 366
 367 /* Function to initialize gdb commands, for tui window layout
 368    manipulation.  */
 369 void
 370 _initialize_tui_layout (void)
 371 {
 372   add_com ("layout", class_tui, tui_layout_command, _("\
 373 Change the layout of windows.\n\
 374 Usage: layout prev | next | <layout_name> \n\
 375 Layout names are:\n\
 376    src   : Displays source and command windows.\n\
 377    asm   : Displays disassembly and command windows.\n\
 378    split : Displays source, disassembly and command windows.\n\
 379    regs  : Displays register window. If existing layout\n\
 380            is source/command or assembly/command, the \n\
 381            register window is displayed. If the\n\
 382            source/assembly/command (split) is displayed, \n\
 383            the register window is displayed with \n\
 384            the window that has current logical focus.\n"));
 385   if (xdb_commands)
 386     {
 387       add_com ("td", class_tui, tui_toggle_layout_command, _("\
 388 Toggle between Source/Command and Disassembly/Command layouts.\n"));
 389       add_com ("ts", class_tui, tui_toggle_split_layout_command, _("\
 390 Toggle between Source/Command or Disassembly/Command and \n\
 391 Source/Disassembly/Command layouts.\n"));
 392     }
 393 }
 394
 395
 396 /*************************
 397 ** STATIC LOCAL FUNCTIONS
 398 **************************/
 399
 400
 401 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA,
 402    REGS, $REGS, $GREGS, $FREGS, $SREGS.  */
 403 enum tui_status
 404 tui_set_layout_for_display_command (const char *layout_name)
 405 {
 406   enum tui_status status = TUI_SUCCESS;
 407
 408   if (layout_name != (char *) NULL)
 409     {
 410       int i;
 411       char *buf_ptr;
 412       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 413       enum tui_register_display_type dpy_type = TUI_UNDEFINED_REGS;
 414       enum tui_layout_type cur_layout = tui_current_layout ();
 415
 416       buf_ptr = (char *) xstrdup (layout_name);
 417       for (i = 0; (i < strlen (layout_name)); i++)
 418         buf_ptr[i] = toupper (buf_ptr[i]);
 419
 420       /* First check for ambiguous input */
 421       if (strlen (buf_ptr) <= 1 && (*buf_ptr == 'S' || *buf_ptr == '$'))
 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                    subset_compare (buf_ptr, TUI_GENERAL_SPECIAL_REGS_NAME) ||
 436                    subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME) ||
 437                    subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME) ||
 438                    subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 439             {
 440               if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
 441                 new_layout = SRC_DATA_COMMAND;
 442               else
 443                 new_layout = DISASSEM_DATA_COMMAND;
 444
 445 /* could ifdef out the following code. when compile with -z, there are null
 446    pointer references that cause a core dump if 'layout regs' is the first
 447    layout command issued by the user. HP has asked us to hook up this code
 448    - edie epstein
 449  */
 450               if (subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME))
 451                 {
 452                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 453                       TUI_SFLOAT_REGS &&
 454                       TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 455                       TUI_DFLOAT_REGS)
 456                     dpy_type = TUI_SFLOAT_REGS;
 457                   else
 458                     dpy_type =
 459                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 460                 }
 461               else if (subset_compare (buf_ptr,
 462                                       TUI_GENERAL_SPECIAL_REGS_NAME))
 463                 dpy_type = TUI_GENERAL_AND_SPECIAL_REGS;
 464               else if (subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME))
 465                 dpy_type = TUI_GENERAL_REGS;
 466               else if (subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 467                 dpy_type = TUI_SPECIAL_REGS;
 468               else if (TUI_DATA_WIN)
 469                 {
 470                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 471                       TUI_UNDEFINED_REGS)
 472                     dpy_type =
 473                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 474                   else
 475                     dpy_type = TUI_GENERAL_REGS;
 476                 }
 477
 478 /* end of potential ifdef
 479  */
 480
 481 /* if ifdefed out code above, then assume that the user wishes to display the
 482    general purpose registers
 483  */
 484
 485 /*              dpy_type = TUI_GENERAL_REGS;
 486  */
 487             }
 488           else if (subset_compare (buf_ptr, "NEXT"))
 489             new_layout = next_layout ();
 490           else if (subset_compare (buf_ptr, "PREV"))
 491             new_layout = prev_layout ();
 492           else
 493             status = TUI_FAILURE;
 494
 495           tui_set_layout (new_layout, dpy_type);
 496         }
 497       xfree (buf_ptr);
 498     }
 499   else
 500     status = TUI_FAILURE;
 501
 502   return status;
 503 }
 504
 505
 506 static CORE_ADDR
 507 extract_display_start_addr (void)
 508 {
 509   enum tui_layout_type cur_layout = tui_current_layout ();
 510   CORE_ADDR addr;
 511   CORE_ADDR pc;
 512   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 513
 514   switch (cur_layout)
 515     {
 516     case SRC_COMMAND:
 517     case SRC_DATA_COMMAND:
 518       find_line_pc (cursal.symtab,
 519                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 520                     &pc);
 521       addr = pc;
 522       break;
 523     case DISASSEM_COMMAND:
 524     case SRC_DISASSEM_COMMAND:
 525     case DISASSEM_DATA_COMMAND:
 526       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 527       break;
 528     default:
 529       addr = 0;
 530       break;
 531     }
 532
 533   return addr;
 534 }
 535
 536
 537 static void
 538 tui_handle_xdb_layout (struct tui_layout_def * layout_def)
 539 {
 540   if (layout_def->split)
 541     {
 542       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
 543       tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
 544     }
 545   else
 546     {
 547       if (layout_def->display_mode == SRC_WIN)
 548         tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
 549       else
 550         tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
 551     }
 552 }
 553
 554
 555 static void
 556 tui_toggle_layout_command (char *arg, int from_tty)
 557 {
 558   struct tui_layout_def * layout_def = tui_layout_def ();
 559
 560   /* Make sure the curses mode is enabled.  */
 561   tui_enable ();
 562   if (layout_def->display_mode == SRC_WIN)
 563     layout_def->display_mode = DISASSEM_WIN;
 564   else
 565     layout_def->display_mode = SRC_WIN;
 566
 567   if (!layout_def->split)
 568     tui_handle_xdb_layout (layout_def);
 569 }
 570
 571
 572 static void
 573 tui_toggle_split_layout_command (char *arg, int from_tty)
 574 {
 575   struct tui_layout_def * layout_def = tui_layout_def ();
 576
 577   /* Make sure the curses mode is enabled.  */
 578   tui_enable ();
 579   layout_def->split = (!layout_def->split);
 580   tui_handle_xdb_layout (layout_def);
 581 }
 582
 583
 584 static void
 585 tui_layout_command (char *arg, int from_tty)
 586 {
 587   /* Make sure the curses mode is enabled.  */
 588   tui_enable ();
 589
 590   /* Switch to the selected layout.  */
 591   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
 592     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 593
 594 }
 595
 596 /* Answer the previous layout to cycle to.  */
 597 static enum tui_layout_type
 598 next_layout (void)
 599 {
 600   enum tui_layout_type new_layout;
 601
 602   new_layout = tui_current_layout ();
 603   if (new_layout == UNDEFINED_LAYOUT)
 604     new_layout = SRC_COMMAND;
 605   else
 606     {
 607       new_layout++;
 608       if (new_layout == UNDEFINED_LAYOUT)
 609         new_layout = SRC_COMMAND;
 610     }
 611
 612   return new_layout;
 613 }
 614
 615
 616 /* Answer the next layout to cycle to.  */
 617 static enum tui_layout_type
 618 prev_layout (void)
 619 {
 620   enum tui_layout_type new_layout;
 621
 622   new_layout = tui_current_layout ();
 623   if (new_layout == SRC_COMMAND)
 624     new_layout = DISASSEM_DATA_COMMAND;
 625   else
 626     {
 627       new_layout--;
 628       if (new_layout == UNDEFINED_LAYOUT)
 629         new_layout = DISASSEM_DATA_COMMAND;
 630     }
 631
 632   return new_layout;
 633 }
 634
 635
 636
 637 static void
 638 make_command_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
 639 {
 640   *win_info_ptr = init_and_make_win (*win_info_ptr,
 641                                      CMD_WIN,
 642                                      height,
 643                                      tui_term_width (),
 644                                      0,
 645                                      origin_y,
 646                                      DONT_BOX_WINDOW);
 647
 648   (*win_info_ptr)->can_highlight = FALSE;
 649 }
 650
 651
 652 /*
 653    ** make_source_window().
 654  */
 655 static void
 656 make_source_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
 657 {
 658   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 659
 660   return;
 661 }                               /* make_source_window */
 662
 663
 664 /*
 665    ** make_disasm_window().
 666  */
 667 static void
 668 make_disasm_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
 669 {
 670   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 671
 672   return;
 673 }                               /* make_disasm_window */
 674
 675
 676 static void
 677 make_data_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
 678 {
 679   *win_info_ptr = init_and_make_win (*win_info_ptr,
 680                                      DATA_WIN,
 681                                      height,
 682                                      tui_term_width (),
 683                                      0,
 684                                      origin_y,
 685                                      BOX_WINDOW);
 686 }
 687
 688
 689
 690 /* Show the Source/Command layout.  */
 691 static void
 692 show_source_command (void)
 693 {
 694   show_source_or_disasm_and_command (SRC_COMMAND);
 695 }
 696
 697
 698 /* Show the Dissassem/Command layout.  */
 699 static void
 700 show_disasm_command (void)
 701 {
 702   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 703 }
 704
 705
 706 /* Show the Source/Disassem/Command layout.  */
 707 static void
 708 show_source_disasm_command (void)
 709 {
 710   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 711     {
 712       int cmd_height, src_height, asm_height;
 713
 714       if (TUI_CMD_WIN != NULL)
 715         cmd_height = TUI_CMD_WIN->generic.height;
 716       else
 717         cmd_height = tui_term_height () / 3;
 718
 719       src_height = (tui_term_height () - cmd_height) / 2;
 720       asm_height = tui_term_height () - (src_height + cmd_height);
 721
 722       if (TUI_SRC_WIN == NULL)
 723         make_source_window (&TUI_SRC_WIN, src_height, 0);
 724       else
 725         {
 726           init_gen_win_info (&TUI_SRC_WIN->generic,
 727                            TUI_SRC_WIN->generic.type,
 728                            src_height,
 729                            TUI_SRC_WIN->generic.width,
 730                            TUI_SRC_WIN->detail.source_info.execution_info->width,
 731                            0);
 732           TUI_SRC_WIN->can_highlight = TRUE;
 733           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 734                            EXEC_INFO_WIN,
 735                            src_height,
 736                            3,
 737                            0,
 738                            0);
 739           tui_make_visible (&TUI_SRC_WIN->generic);
 740           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 741           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 742         }
 743       if (TUI_SRC_WIN != NULL)
 744         {
 745           struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
 746
 747           tui_show_source_content (TUI_SRC_WIN);
 748           if (TUI_DISASM_WIN == NULL)
 749             {
 750               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 751               locator = init_and_make_win (locator,
 752                                            LOCATOR_WIN,
 753                                            2 /* 1 */ ,
 754                                            tui_term_width (),
 755                                            0,
 756                                            (src_height + asm_height) - 1,
 757                                            DONT_BOX_WINDOW);
 758             }
 759           else
 760             {
 761               init_gen_win_info (locator,
 762                                LOCATOR_WIN,
 763                                2 /* 1 */ ,
 764                                tui_term_width (),
 765                                0,
 766                                (src_height + asm_height) - 1);
 767               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 768               init_gen_win_info (
 769                                 &TUI_DISASM_WIN->generic,
 770                                 TUI_DISASM_WIN->generic.type,
 771                                 asm_height,
 772                                 TUI_DISASM_WIN->generic.width,
 773                         TUI_DISASM_WIN->detail.source_info.execution_info->width,
 774                                 src_height - 1);
 775               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 776                                EXEC_INFO_WIN,
 777                                asm_height,
 778                                3,
 779                                0,
 780                                src_height - 1);
 781               TUI_DISASM_WIN->can_highlight = TRUE;
 782               tui_make_visible (&TUI_DISASM_WIN->generic);
 783               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 784             }
 785           if (TUI_DISASM_WIN != NULL)
 786             {
 787               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 788               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 789               tui_make_visible (locator);
 790               tui_show_locator_content ();
 791               tui_show_source_content (TUI_DISASM_WIN);
 792
 793               if (TUI_CMD_WIN == NULL)
 794                 make_command_window (&TUI_CMD_WIN,
 795                                     cmd_height,
 796                                     tui_term_height () - cmd_height);
 797               else
 798                 {
 799                   init_gen_win_info (&TUI_CMD_WIN->generic,
 800                                    TUI_CMD_WIN->generic.type,
 801                                    TUI_CMD_WIN->generic.height,
 802                                    TUI_CMD_WIN->generic.width,
 803                                    0,
 804                                    TUI_CMD_WIN->generic.origin.y);
 805                   TUI_CMD_WIN->can_highlight = FALSE;
 806                   tui_make_visible (&TUI_CMD_WIN->generic);
 807                 }
 808               if (TUI_CMD_WIN != NULL)
 809                 tui_refresh_win (&TUI_CMD_WIN->generic);
 810             }
 811         }
 812       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 813     }
 814 }
 815
 816
 817 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 818    layout.  */
 819 static void
 820 show_data (enum tui_layout_type new_layout)
 821 {
 822   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 823   int src_height, data_height;
 824   enum tui_win_type win_type;
 825   struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
 826
 827
 828   data_height = total_height / 2;
 829   src_height = total_height - data_height;
 830   tui_make_all_invisible ();
 831   tui_make_invisible (locator);
 832   make_data_window (&TUI_DATA_WIN, data_height, 0);
 833   TUI_DATA_WIN->can_highlight = TRUE;
 834   if (new_layout == SRC_DATA_COMMAND)
 835     win_type = SRC_WIN;
 836   else
 837     win_type = DISASSEM_WIN;
 838   if (tui_win_list[win_type] == NULL)
 839     {
 840       if (win_type == SRC_WIN)
 841         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 842       else
 843         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 844       locator = init_and_make_win (locator,
 845                                    LOCATOR_WIN,
 846                                    2 /* 1 */ ,
 847                                    tui_term_width (),
 848                                    0,
 849                                    total_height - 1,
 850                                    DONT_BOX_WINDOW);
 851     }
 852   else
 853     {
 854       init_gen_win_info (&tui_win_list[win_type]->generic,
 855                        tui_win_list[win_type]->generic.type,
 856                        src_height,
 857                        tui_win_list[win_type]->generic.width,
 858                    tui_win_list[win_type]->detail.source_info.execution_info->width,
 859                        data_height - 1);
 860       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 861                        EXEC_INFO_WIN,
 862                        src_height,
 863                        3,
 864                        0,
 865                        data_height - 1);
 866       tui_make_visible (&tui_win_list[win_type]->generic);
 867       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 868       init_gen_win_info (locator,
 869                        LOCATOR_WIN,
 870                        2 /* 1 */ ,
 871                        tui_term_width (),
 872                        0,
 873                        total_height - 1);
 874     }
 875   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 876   tui_make_visible (locator);
 877   tui_show_locator_content ();
 878   tui_add_to_source_windows (tui_win_list[win_type]);
 879   tui_set_current_layout_to (new_layout);
 880 }
 881
 882 /*
 883    ** init_gen_win_info().
 884  */
 885 static void
 886 init_gen_win_info (struct tui_gen_win_info * win_info, enum tui_win_type type,
 887                  int height, int width, int origin_x, int origin_y)
 888 {
 889   int h = height;
 890
 891   win_info->type = type;
 892   win_info->width = width;
 893   win_info->height = h;
 894   if (h > 1)
 895     {
 896       win_info->viewport_height = h - 1;
 897       if (win_info->type != CMD_WIN)
 898         win_info->viewport_height--;
 899     }
 900   else
 901     win_info->viewport_height = 1;
 902   win_info->origin.x = origin_x;
 903   win_info->origin.y = origin_y;
 904
 905   return;
 906 }                               /* init_gen_win_info */
 907
 908 /*
 909    ** init_and_make_win().
 910  */
 911 static void *
 912 init_and_make_win (void *opaque_win_info, enum tui_win_type win_type,
 913                    int height, int width, int origin_x, int origin_y,
 914                    int box_it)
 915 {
 916   struct tui_gen_win_info * generic;
 917
 918   if (opaque_win_info == NULL)
 919     {
 920       if (tui_win_is_auxillary (win_type))
 921         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 922       else
 923         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 924     }
 925   if (tui_win_is_auxillary (win_type))
 926     generic = (struct tui_gen_win_info *) opaque_win_info;
 927   else
 928     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 929
 930   if (opaque_win_info != NULL)
 931     {
 932       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 933       if (!tui_win_is_auxillary (win_type))
 934         {
 935           if (generic->type == CMD_WIN)
 936             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 937           else
 938             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 939         }
 940       tui_make_window (generic, box_it);
 941     }
 942   return opaque_win_info;
 943 }
 944
 945
 946 static void
 947 make_source_or_disasm_window (struct tui_win_info * * win_info_ptr, enum tui_win_type type,
 948                              int height, int origin_y)
 949 {
 950   struct tui_gen_win_info * execution_info = (struct tui_gen_win_info *) NULL;
 951
 952   /*
 953      ** Create the exeuction info window.
 954    */
 955   if (type == SRC_WIN)
 956     execution_info = tui_source_exec_info_win_ptr ();
 957   else
 958     execution_info = tui_disassem_exec_info_win_ptr ();
 959   execution_info = init_and_make_win (execution_info,
 960                                       EXEC_INFO_WIN,
 961                                       height,
 962                                       3,
 963                                       0,
 964                                       origin_y,
 965                                       DONT_BOX_WINDOW);
 966   /*
 967      ** Now create the source window.
 968    */
 969   *win_info_ptr = init_and_make_win (*win_info_ptr,
 970                                      type,
 971                                      height,
 972                                      tui_term_width () - execution_info->width,
 973                                      execution_info->width,
 974                                      origin_y,
 975                                      BOX_WINDOW);
 976
 977   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 978 }
 979
 980
 981 /* Show the Source/Command or the Disassem layout.   */
 982 static void
 983 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 984 {
 985   if (tui_current_layout () != layout_type)
 986     {
 987       struct tui_win_info * *win_info_ptr;
 988       int src_height, cmd_height;
 989       struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
 990
 991       if (TUI_CMD_WIN != NULL)
 992         cmd_height = TUI_CMD_WIN->generic.height;
 993       else
 994         cmd_height = tui_term_height () / 3;
 995       src_height = tui_term_height () - cmd_height;
 996
 997
 998       if (layout_type == SRC_COMMAND)
 999         win_info_ptr = &TUI_SRC_WIN;
1000       else
1001         win_info_ptr = &TUI_DISASM_WIN;
1002
1003       if ((*win_info_ptr) == NULL)
1004         {
1005           if (layout_type == SRC_COMMAND)
1006             make_source_window (win_info_ptr, src_height - 1, 0);
1007           else
1008             make_disasm_window (win_info_ptr, src_height - 1, 0);
1009           locator = init_and_make_win (locator,
1010                                        LOCATOR_WIN,
1011                                        2 /* 1 */ ,
1012                                        tui_term_width (),
1013                                        0,
1014                                        src_height - 1,
1015                                        DONT_BOX_WINDOW);
1016         }
1017       else
1018         {
1019           init_gen_win_info (locator,
1020                            LOCATOR_WIN,
1021                            2 /* 1 */ ,
1022                            tui_term_width (),
1023                            0,
1024                            src_height - 1);
1025           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1026           init_gen_win_info (
1027                             &(*win_info_ptr)->generic,
1028                             (*win_info_ptr)->generic.type,
1029                             src_height - 1,
1030                             (*win_info_ptr)->generic.width,
1031                       (*win_info_ptr)->detail.source_info.execution_info->width,
1032                             0);
1033           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1034                            EXEC_INFO_WIN,
1035                            src_height - 1,
1036                            3,
1037                            0,
1038                            0);
1039           (*win_info_ptr)->can_highlight = TRUE;
1040           tui_make_visible (&(*win_info_ptr)->generic);
1041           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1042         }
1043       if ((*win_info_ptr) != NULL)
1044         {
1045           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1046           tui_make_visible (locator);
1047           tui_show_locator_content ();
1048           tui_show_source_content (*win_info_ptr);
1049
1050           if (TUI_CMD_WIN == NULL)
1051             {
1052               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1053               tui_refresh_win (&TUI_CMD_WIN->generic);
1054             }
1055           else
1056             {
1057               init_gen_win_info (&TUI_CMD_WIN->generic,
1058                                TUI_CMD_WIN->generic.type,
1059                                TUI_CMD_WIN->generic.height,
1060                                TUI_CMD_WIN->generic.width,
1061                                TUI_CMD_WIN->generic.origin.x,
1062                                TUI_CMD_WIN->generic.origin.y);
1063               TUI_CMD_WIN->can_highlight = FALSE;
1064               tui_make_visible (&TUI_CMD_WIN->generic);
1065             }
1066         }
1067       tui_set_current_layout_to (layout_type);
1068     }
1069 }