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
 446                  -z, there are null pointer references that cause a
 447                  core dump if 'layout regs' is the first layout
 448                  command issued by the user. HP has asked us to hook
 449                  up this code.  - edie epstein  */
 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
 482                  wishes to display the general purpose registers .
 483               */
 484
 485               /* dpy_type = TUI_GENERAL_REGS; */
 486             }
 487           else if (subset_compare (buf_ptr, "NEXT"))
 488             new_layout = next_layout ();
 489           else if (subset_compare (buf_ptr, "PREV"))
 490             new_layout = prev_layout ();
 491           else
 492             status = TUI_FAILURE;
 493
 494           tui_set_layout (new_layout, dpy_type);
 495         }
 496       xfree (buf_ptr);
 497     }
 498   else
 499     status = TUI_FAILURE;
 500
 501   return status;
 502 }
 503
 504
 505 static CORE_ADDR
 506 extract_display_start_addr (void)
 507 {
 508   enum tui_layout_type cur_layout = tui_current_layout ();
 509   CORE_ADDR addr;
 510   CORE_ADDR pc;
 511   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 512
 513   switch (cur_layout)
 514     {
 515     case SRC_COMMAND:
 516     case SRC_DATA_COMMAND:
 517       find_line_pc (cursal.symtab,
 518                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 519                     &pc);
 520       addr = pc;
 521       break;
 522     case DISASSEM_COMMAND:
 523     case SRC_DISASSEM_COMMAND:
 524     case DISASSEM_DATA_COMMAND:
 525       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 526       break;
 527     default:
 528       addr = 0;
 529       break;
 530     }
 531
 532   return addr;
 533 }
 534
 535
 536 static void
 537 tui_handle_xdb_layout (struct tui_layout_def *layout_def)
 538 {
 539   if (layout_def->split)
 540     {
 541       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
 542       tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
 543     }
 544   else
 545     {
 546       if (layout_def->display_mode == SRC_WIN)
 547         tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
 548       else
 549         tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
 550     }
 551 }
 552
 553
 554 static void
 555 tui_toggle_layout_command (char *arg, int from_tty)
 556 {
 557   struct tui_layout_def *layout_def = tui_layout_def ();
 558
 559   /* Make sure the curses mode is enabled.  */
 560   tui_enable ();
 561   if (layout_def->display_mode == SRC_WIN)
 562     layout_def->display_mode = DISASSEM_WIN;
 563   else
 564     layout_def->display_mode = SRC_WIN;
 565
 566   if (!layout_def->split)
 567     tui_handle_xdb_layout (layout_def);
 568 }
 569
 570
 571 static void
 572 tui_toggle_split_layout_command (char *arg, int from_tty)
 573 {
 574   struct tui_layout_def *layout_def = tui_layout_def ();
 575
 576   /* Make sure the curses mode is enabled.  */
 577   tui_enable ();
 578   layout_def->split = (!layout_def->split);
 579   tui_handle_xdb_layout (layout_def);
 580 }
 581
 582
 583 static void
 584 tui_layout_command (char *arg, int from_tty)
 585 {
 586   /* Make sure the curses mode is enabled.  */
 587   tui_enable ();
 588
 589   /* Switch to the selected layout.  */
 590   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
 591     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 592
 593 }
 594
 595 /* Answer the previous layout to cycle to.  */
 596 static enum tui_layout_type
 597 next_layout (void)
 598 {
 599   enum tui_layout_type new_layout;
 600
 601   new_layout = tui_current_layout ();
 602   if (new_layout == UNDEFINED_LAYOUT)
 603     new_layout = SRC_COMMAND;
 604   else
 605     {
 606       new_layout++;
 607       if (new_layout == UNDEFINED_LAYOUT)
 608         new_layout = SRC_COMMAND;
 609     }
 610
 611   return new_layout;
 612 }
 613
 614
 615 /* Answer the next layout to cycle to.  */
 616 static enum tui_layout_type
 617 prev_layout (void)
 618 {
 619   enum tui_layout_type new_layout;
 620
 621   new_layout = tui_current_layout ();
 622   if (new_layout == SRC_COMMAND)
 623     new_layout = DISASSEM_DATA_COMMAND;
 624   else
 625     {
 626       new_layout--;
 627       if (new_layout == UNDEFINED_LAYOUT)
 628         new_layout = DISASSEM_DATA_COMMAND;
 629     }
 630
 631   return new_layout;
 632 }
 633
 634
 635
 636 static void
 637 make_command_window (struct tui_win_info **win_info_ptr, int height, int origin_y)
 638 {
 639   *win_info_ptr = init_and_make_win (*win_info_ptr,
 640                                      CMD_WIN,
 641                                      height,
 642                                      tui_term_width (),
 643                                      0,
 644                                      origin_y,
 645                                      DONT_BOX_WINDOW);
 646
 647   (*win_info_ptr)->can_highlight = FALSE;
 648 }
 649
 650
 651 /*
 652    ** make_source_window().
 653  */
 654 static void
 655 make_source_window (struct tui_win_info **win_info_ptr, int height, int origin_y)
 656 {
 657   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 658
 659   return;
 660 }                               /* make_source_window */
 661
 662
 663 /*
 664    ** make_disasm_window().
 665  */
 666 static void
 667 make_disasm_window (struct tui_win_info **win_info_ptr, int height, int origin_y)
 668 {
 669   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 670
 671   return;
 672 }                               /* make_disasm_window */
 673
 674
 675 static void
 676 make_data_window (struct tui_win_info **win_info_ptr, int height, int origin_y)
 677 {
 678   *win_info_ptr = init_and_make_win (*win_info_ptr,
 679                                      DATA_WIN,
 680                                      height,
 681                                      tui_term_width (),
 682                                      0,
 683                                      origin_y,
 684                                      BOX_WINDOW);
 685 }
 686
 687
 688
 689 /* Show the Source/Command layout.  */
 690 static void
 691 show_source_command (void)
 692 {
 693   show_source_or_disasm_and_command (SRC_COMMAND);
 694 }
 695
 696
 697 /* Show the Dissassem/Command layout.  */
 698 static void
 699 show_disasm_command (void)
 700 {
 701   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 702 }
 703
 704
 705 /* Show the Source/Disassem/Command layout.  */
 706 static void
 707 show_source_disasm_command (void)
 708 {
 709   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 710     {
 711       int cmd_height, src_height, asm_height;
 712
 713       if (TUI_CMD_WIN != NULL)
 714         cmd_height = TUI_CMD_WIN->generic.height;
 715       else
 716         cmd_height = tui_term_height () / 3;
 717
 718       src_height = (tui_term_height () - cmd_height) / 2;
 719       asm_height = tui_term_height () - (src_height + cmd_height);
 720
 721       if (TUI_SRC_WIN == NULL)
 722         make_source_window (&TUI_SRC_WIN, src_height, 0);
 723       else
 724         {
 725           init_gen_win_info (&TUI_SRC_WIN->generic,
 726                            TUI_SRC_WIN->generic.type,
 727                            src_height,
 728                            TUI_SRC_WIN->generic.width,
 729                            TUI_SRC_WIN->detail.source_info.execution_info->width,
 730                            0);
 731           TUI_SRC_WIN->can_highlight = TRUE;
 732           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 733                            EXEC_INFO_WIN,
 734                            src_height,
 735                            3,
 736                            0,
 737                            0);
 738           tui_make_visible (&TUI_SRC_WIN->generic);
 739           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 740           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 741         }
 742       if (TUI_SRC_WIN != NULL)
 743         {
 744           struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 745
 746           tui_show_source_content (TUI_SRC_WIN);
 747           if (TUI_DISASM_WIN == NULL)
 748             {
 749               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 750               locator = init_and_make_win (locator,
 751                                            LOCATOR_WIN,
 752                                            2 /* 1 */ ,
 753                                            tui_term_width (),
 754                                            0,
 755                                            (src_height + asm_height) - 1,
 756                                            DONT_BOX_WINDOW);
 757             }
 758           else
 759             {
 760               init_gen_win_info (locator,
 761                                LOCATOR_WIN,
 762                                2 /* 1 */ ,
 763                                tui_term_width (),
 764                                0,
 765                                (src_height + asm_height) - 1);
 766               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 767               init_gen_win_info (
 768                                 &TUI_DISASM_WIN->generic,
 769                                 TUI_DISASM_WIN->generic.type,
 770                                 asm_height,
 771                                 TUI_DISASM_WIN->generic.width,
 772                         TUI_DISASM_WIN->detail.source_info.execution_info->width,
 773                                 src_height - 1);
 774               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 775                                EXEC_INFO_WIN,
 776                                asm_height,
 777                                3,
 778                                0,
 779                                src_height - 1);
 780               TUI_DISASM_WIN->can_highlight = TRUE;
 781               tui_make_visible (&TUI_DISASM_WIN->generic);
 782               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 783             }
 784           if (TUI_DISASM_WIN != NULL)
 785             {
 786               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 787               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 788               tui_make_visible (locator);
 789               tui_show_locator_content ();
 790               tui_show_source_content (TUI_DISASM_WIN);
 791
 792               if (TUI_CMD_WIN == NULL)
 793                 make_command_window (&TUI_CMD_WIN,
 794                                     cmd_height,
 795                                     tui_term_height () - cmd_height);
 796               else
 797                 {
 798                   init_gen_win_info (&TUI_CMD_WIN->generic,
 799                                    TUI_CMD_WIN->generic.type,
 800                                    TUI_CMD_WIN->generic.height,
 801                                    TUI_CMD_WIN->generic.width,
 802                                    0,
 803                                    TUI_CMD_WIN->generic.origin.y);
 804                   TUI_CMD_WIN->can_highlight = FALSE;
 805                   tui_make_visible (&TUI_CMD_WIN->generic);
 806                 }
 807               if (TUI_CMD_WIN != NULL)
 808                 tui_refresh_win (&TUI_CMD_WIN->generic);
 809             }
 810         }
 811       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 812     }
 813 }
 814
 815
 816 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 817    layout.  */
 818 static void
 819 show_data (enum tui_layout_type new_layout)
 820 {
 821   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 822   int src_height, data_height;
 823   enum tui_win_type win_type;
 824   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 825
 826
 827   data_height = total_height / 2;
 828   src_height = total_height - data_height;
 829   tui_make_all_invisible ();
 830   tui_make_invisible (locator);
 831   make_data_window (&TUI_DATA_WIN, data_height, 0);
 832   TUI_DATA_WIN->can_highlight = TRUE;
 833   if (new_layout == SRC_DATA_COMMAND)
 834     win_type = SRC_WIN;
 835   else
 836     win_type = DISASSEM_WIN;
 837   if (tui_win_list[win_type] == NULL)
 838     {
 839       if (win_type == SRC_WIN)
 840         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 841       else
 842         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 843       locator = init_and_make_win (locator,
 844                                    LOCATOR_WIN,
 845                                    2 /* 1 */ ,
 846                                    tui_term_width (),
 847                                    0,
 848                                    total_height - 1,
 849                                    DONT_BOX_WINDOW);
 850     }
 851   else
 852     {
 853       init_gen_win_info (&tui_win_list[win_type]->generic,
 854                        tui_win_list[win_type]->generic.type,
 855                        src_height,
 856                        tui_win_list[win_type]->generic.width,
 857                    tui_win_list[win_type]->detail.source_info.execution_info->width,
 858                        data_height - 1);
 859       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 860                        EXEC_INFO_WIN,
 861                        src_height,
 862                        3,
 863                        0,
 864                        data_height - 1);
 865       tui_make_visible (&tui_win_list[win_type]->generic);
 866       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 867       init_gen_win_info (locator,
 868                        LOCATOR_WIN,
 869                        2 /* 1 */ ,
 870                        tui_term_width (),
 871                        0,
 872                        total_height - 1);
 873     }
 874   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 875   tui_make_visible (locator);
 876   tui_show_locator_content ();
 877   tui_add_to_source_windows (tui_win_list[win_type]);
 878   tui_set_current_layout_to (new_layout);
 879 }
 880
 881 /*
 882    ** init_gen_win_info().
 883  */
 884 static void
 885 init_gen_win_info (struct tui_gen_win_info *win_info, enum tui_win_type type,
 886                  int height, int width, int origin_x, int origin_y)
 887 {
 888   int h = height;
 889
 890   win_info->type = type;
 891   win_info->width = width;
 892   win_info->height = h;
 893   if (h > 1)
 894     {
 895       win_info->viewport_height = h - 1;
 896       if (win_info->type != CMD_WIN)
 897         win_info->viewport_height--;
 898     }
 899   else
 900     win_info->viewport_height = 1;
 901   win_info->origin.x = origin_x;
 902   win_info->origin.y = origin_y;
 903
 904   return;
 905 }                               /* init_gen_win_info */
 906
 907 /*
 908    ** init_and_make_win().
 909  */
 910 static void *
 911 init_and_make_win (void *opaque_win_info, enum tui_win_type win_type,
 912                    int height, int width, int origin_x, int origin_y,
 913                    int box_it)
 914 {
 915   struct tui_gen_win_info *generic;
 916
 917   if (opaque_win_info == NULL)
 918     {
 919       if (tui_win_is_auxillary (win_type))
 920         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 921       else
 922         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 923     }
 924   if (tui_win_is_auxillary (win_type))
 925     generic = (struct tui_gen_win_info *) opaque_win_info;
 926   else
 927     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 928
 929   if (opaque_win_info != NULL)
 930     {
 931       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 932       if (!tui_win_is_auxillary (win_type))
 933         {
 934           if (generic->type == CMD_WIN)
 935             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 936           else
 937             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 938         }
 939       tui_make_window (generic, box_it);
 940     }
 941   return opaque_win_info;
 942 }
 943
 944
 945 static void
 946 make_source_or_disasm_window (struct tui_win_info **win_info_ptr, enum tui_win_type type,
 947                              int height, int origin_y)
 948 {
 949   struct tui_gen_win_info *execution_info = (struct tui_gen_win_info *) NULL;
 950
 951   /*
 952      ** Create the exeuction info window.
 953    */
 954   if (type == SRC_WIN)
 955     execution_info = tui_source_exec_info_win_ptr ();
 956   else
 957     execution_info = tui_disassem_exec_info_win_ptr ();
 958   execution_info = init_and_make_win (execution_info,
 959                                       EXEC_INFO_WIN,
 960                                       height,
 961                                       3,
 962                                       0,
 963                                       origin_y,
 964                                       DONT_BOX_WINDOW);
 965   /*
 966      ** Now create the source window.
 967    */
 968   *win_info_ptr = init_and_make_win (*win_info_ptr,
 969                                      type,
 970                                      height,
 971                                      tui_term_width () - execution_info->width,
 972                                      execution_info->width,
 973                                      origin_y,
 974                                      BOX_WINDOW);
 975
 976   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 977 }
 978
 979
 980 /* Show the Source/Command or the Disassem layout.  */
 981 static void
 982 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 983 {
 984   if (tui_current_layout () != layout_type)
 985     {
 986       struct tui_win_info **win_info_ptr;
 987       int src_height, cmd_height;
 988       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 989
 990       if (TUI_CMD_WIN != NULL)
 991         cmd_height = TUI_CMD_WIN->generic.height;
 992       else
 993         cmd_height = tui_term_height () / 3;
 994       src_height = tui_term_height () - cmd_height;
 995
 996
 997       if (layout_type == SRC_COMMAND)
 998         win_info_ptr = &TUI_SRC_WIN;
 999       else
1000         win_info_ptr = &TUI_DISASM_WIN;
1001
1002       if ((*win_info_ptr) == NULL)
1003         {
1004           if (layout_type == SRC_COMMAND)
1005             make_source_window (win_info_ptr, src_height - 1, 0);
1006           else
1007             make_disasm_window (win_info_ptr, src_height - 1, 0);
1008           locator = init_and_make_win (locator,
1009                                        LOCATOR_WIN,
1010                                        2 /* 1 */ ,
1011                                        tui_term_width (),
1012                                        0,
1013                                        src_height - 1,
1014                                        DONT_BOX_WINDOW);
1015         }
1016       else
1017         {
1018           init_gen_win_info (locator,
1019                            LOCATOR_WIN,
1020                            2 /* 1 */ ,
1021                            tui_term_width (),
1022                            0,
1023                            src_height - 1);
1024           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1025           init_gen_win_info (
1026                             &(*win_info_ptr)->generic,
1027                             (*win_info_ptr)->generic.type,
1028                             src_height - 1,
1029                             (*win_info_ptr)->generic.width,
1030                       (*win_info_ptr)->detail.source_info.execution_info->width,
1031                             0);
1032           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1033                            EXEC_INFO_WIN,
1034                            src_height - 1,
1035                            3,
1036                            0,
1037                            0);
1038           (*win_info_ptr)->can_highlight = TRUE;
1039           tui_make_visible (&(*win_info_ptr)->generic);
1040           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1041         }
1042       if ((*win_info_ptr) != NULL)
1043         {
1044           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1045           tui_make_visible (locator);
1046           tui_show_locator_content ();
1047           tui_show_source_content (*win_info_ptr);
1048
1049           if (TUI_CMD_WIN == NULL)
1050             {
1051               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1052               tui_refresh_win (&TUI_CMD_WIN->generic);
1053             }
1054           else
1055             {
1056               init_gen_win_info (&TUI_CMD_WIN->generic,
1057                                TUI_CMD_WIN->generic.type,
1058                                TUI_CMD_WIN->generic.height,
1059                                TUI_CMD_WIN->generic.width,
1060                                TUI_CMD_WIN->generic.origin.x,
1061                                TUI_CMD_WIN->generic.origin.y);
1062               TUI_CMD_WIN->can_highlight = FALSE;
1063               tui_make_visible (&TUI_CMD_WIN->generic);
1064             }
1065         }
1066       tui_set_current_layout_to (layout_type);
1067     }
1068 }