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 *,
  50                                enum tui_win_type,
  51                                int, int, int, int);
  52 static void *init_and_make_win (void *, enum tui_win_type,
  53                                 int, int, int, int, int);
  54 static void show_source_or_disasm_and_command (enum tui_layout_type);
  55 static void make_source_or_disasm_window (struct tui_win_info **,
  56                                           enum tui_win_type,
  57                                           int, int);
  58 static void make_command_window (struct tui_win_info **, int, int);
  59 static void make_source_window (struct tui_win_info **, int, int);
  60 static void make_disasm_window (struct tui_win_info **, int, int);
  61 static void make_data_window (struct tui_win_info **, int, int);
  62 static void show_source_command (void);
  63 static void show_disasm_command (void);
  64 static void show_source_disasm_command (void);
  65 static void show_data (enum tui_layout_type);
  66 static enum tui_layout_type next_layout (void);
  67 static enum tui_layout_type prev_layout (void);
  68 static void tui_layout_command (char *, int);
  69 static void tui_toggle_layout_command (char *, int);
  70 static void tui_toggle_split_layout_command (char *, int);
  71 static CORE_ADDR extract_display_start_addr (void);
  72 static void tui_handle_xdb_layout (struct tui_layout_def *);
  73
  74
  75 /***************************************
  76 ** DEFINITIONS
  77 ***************************************/
  78
  79 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
  80
  81 /* Show the screen layout defined.  */
  82 static void
  83 show_layout (enum tui_layout_type layout)
  84 {
  85   enum tui_layout_type cur_layout = tui_current_layout ();
  86
  87   if (layout != cur_layout)
  88     {
  89       /* Since the new layout may cause changes in window size, we
  90          should free the content and reallocate on next display of
  91          source/asm.  */
  92       tui_free_all_source_wins_content ();
  93       tui_clear_source_windows ();
  94       if (layout == SRC_DATA_COMMAND || layout == DISASSEM_DATA_COMMAND)
  95         {
  96           show_data (layout);
  97           tui_refresh_all (tui_win_list);
  98         }
  99       else
 100         {
 101           /* First make the current layout be invisible.  */
 102           tui_make_all_invisible ();
 103           tui_make_invisible (tui_locator_win_info_ptr ());
 104
 105           switch (layout)
 106             {
 107               /* Now show the new layout.  */
 108             case SRC_COMMAND:
 109               show_source_command ();
 110               tui_add_to_source_windows (TUI_SRC_WIN);
 111               break;
 112             case DISASSEM_COMMAND:
 113               show_disasm_command ();
 114               tui_add_to_source_windows (TUI_DISASM_WIN);
 115               break;
 116             case SRC_DISASSEM_COMMAND:
 117               show_source_disasm_command ();
 118               tui_add_to_source_windows (TUI_SRC_WIN);
 119               tui_add_to_source_windows (TUI_DISASM_WIN);
 120               break;
 121             default:
 122               break;
 123             }
 124         }
 125     }
 126 }
 127
 128
 129 /* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
 130    SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.
 131    If the layout is SRC_DATA_COMMAND, DISASSEM_DATA_COMMAND, or
 132    UNDEFINED_LAYOUT, then the data window is populated according to
 133    regs_display_type.  */
 134 enum tui_status
 135 tui_set_layout (enum tui_layout_type layout_type,
 136                 enum tui_register_display_type regs_display_type)
 137 {
 138   enum tui_status status = TUI_SUCCESS;
 139
 140   if (layout_type != UNDEFINED_LAYOUT || regs_display_type != TUI_UNDEFINED_REGS)
 141     {
 142       enum tui_layout_type cur_layout = tui_current_layout (), new_layout = UNDEFINED_LAYOUT;
 143       int regs_populate = FALSE;
 144       CORE_ADDR addr = extract_display_start_addr ();
 145       struct tui_win_info *win_with_focus = tui_win_with_focus ();
 146       struct tui_layout_def *layout_def = tui_layout_def ();
 147
 148
 149       if (layout_type == UNDEFINED_LAYOUT &&
 150           regs_display_type != TUI_UNDEFINED_REGS)
 151         {
 152           if (cur_layout == SRC_DISASSEM_COMMAND)
 153             new_layout = DISASSEM_DATA_COMMAND;
 154           else if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
 155             new_layout = SRC_DATA_COMMAND;
 156           else if (cur_layout == DISASSEM_COMMAND ||
 157                    cur_layout == DISASSEM_DATA_COMMAND)
 158             new_layout = DISASSEM_DATA_COMMAND;
 159         }
 160       else
 161         new_layout = layout_type;
 162
 163       regs_populate = (new_layout == SRC_DATA_COMMAND ||
 164                       new_layout == DISASSEM_DATA_COMMAND ||
 165                       regs_display_type != TUI_UNDEFINED_REGS);
 166       if (new_layout != cur_layout || regs_display_type != TUI_UNDEFINED_REGS)
 167         {
 168           if (new_layout != cur_layout)
 169             {
 170               show_layout (new_layout);
 171
 172               /* Now determine where focus should be.  */
 173               if (win_with_focus != TUI_CMD_WIN)
 174                 {
 175                   switch (new_layout)
 176                     {
 177                     case SRC_COMMAND:
 178                       tui_set_win_focus_to (TUI_SRC_WIN);
 179                       layout_def->display_mode = SRC_WIN;
 180                       layout_def->split = FALSE;
 181                       break;
 182                     case DISASSEM_COMMAND:
 183                       /* The previous layout was not showing code.
 184                          This can happen if there is no source
 185                          available:
 186
 187                          1. if the source file is in another dir OR
 188                          2. if target was compiled without -g
 189                          We still want to show the assembly though!  */
 190
 191                       addr = tui_get_begin_asm_address ();
 192                       tui_set_win_focus_to (TUI_DISASM_WIN);
 193                       layout_def->display_mode = DISASSEM_WIN;
 194                       layout_def->split = FALSE;
 195                       break;
 196                     case SRC_DISASSEM_COMMAND:
 197                       /* The previous layout was not showing code.
 198                          This can happen if there is no source
 199                          available:
 200
 201                          1. if the source file is in another dir OR
 202                          2. if target was compiled without -g
 203                          We still want to show the assembly though!  */
 204
 205                       addr = tui_get_begin_asm_address ();
 206                       if (win_with_focus == TUI_SRC_WIN)
 207                         tui_set_win_focus_to (TUI_SRC_WIN);
 208                       else
 209                         tui_set_win_focus_to (TUI_DISASM_WIN);
 210                       layout_def->split = TRUE;
 211                       break;
 212                     case SRC_DATA_COMMAND:
 213                       if (win_with_focus != TUI_DATA_WIN)
 214                         tui_set_win_focus_to (TUI_SRC_WIN);
 215                       else
 216                         tui_set_win_focus_to (TUI_DATA_WIN);
 217                       layout_def->display_mode = SRC_WIN;
 218                       layout_def->split = FALSE;
 219                       break;
 220                     case DISASSEM_DATA_COMMAND:
 221                       /* The previous layout was not showing code.
 222                          This can happen if there is no source
 223                          available:
 224
 225                          1. if the source file is in another dir OR
 226                          2. if target was compiled without -g
 227                          We still want to show the assembly though!  */
 228
 229                       addr = tui_get_begin_asm_address ();
 230                       if (win_with_focus != TUI_DATA_WIN)
 231                         tui_set_win_focus_to (TUI_DISASM_WIN);
 232                       else
 233                         tui_set_win_focus_to (TUI_DATA_WIN);
 234                       layout_def->display_mode = DISASSEM_WIN;
 235                       layout_def->split = FALSE;
 236                       break;
 237                     default:
 238                       break;
 239                     }
 240                 }
 241               /*
 242                * Now update the window content.
 243                */
 244               if (!regs_populate &&
 245                   (new_layout == SRC_DATA_COMMAND ||
 246                    new_layout == DISASSEM_DATA_COMMAND))
 247                 tui_display_all_data ();
 248
 249               tui_update_source_windows_with_addr (addr);
 250             }
 251           if (regs_populate)
 252             {
 253               tui_show_registers (TUI_DATA_WIN->detail.data_display_info.current_group);
 254             }
 255         }
 256     }
 257   else
 258     status = TUI_FAILURE;
 259
 260   return status;
 261 }
 262
 263 /* Add the specified window to the layout in a logical way.  This
 264    means setting up the most logical layout given the window to be
 265    added.  */
 266 void
 267 tui_add_win_to_layout (enum tui_win_type type)
 268 {
 269   enum tui_layout_type cur_layout = tui_current_layout ();
 270
 271   switch (type)
 272     {
 273     case SRC_WIN:
 274       if (cur_layout != SRC_COMMAND &&
 275           cur_layout != SRC_DISASSEM_COMMAND &&
 276           cur_layout != SRC_DATA_COMMAND)
 277         {
 278           tui_clear_source_windows_detail ();
 279           if (cur_layout == DISASSEM_DATA_COMMAND)
 280             show_layout (SRC_DATA_COMMAND);
 281           else
 282             show_layout (SRC_COMMAND);
 283         }
 284       break;
 285     case DISASSEM_WIN:
 286       if (cur_layout != DISASSEM_COMMAND &&
 287           cur_layout != SRC_DISASSEM_COMMAND &&
 288           cur_layout != DISASSEM_DATA_COMMAND)
 289         {
 290           tui_clear_source_windows_detail ();
 291           if (cur_layout == SRC_DATA_COMMAND)
 292             show_layout (DISASSEM_DATA_COMMAND);
 293           else
 294             show_layout (DISASSEM_COMMAND);
 295         }
 296       break;
 297     case DATA_WIN:
 298       if (cur_layout != SRC_DATA_COMMAND &&
 299           cur_layout != DISASSEM_DATA_COMMAND)
 300         {
 301           if (cur_layout == DISASSEM_COMMAND)
 302             show_layout (DISASSEM_DATA_COMMAND);
 303           else
 304             show_layout (SRC_DATA_COMMAND);
 305         }
 306       break;
 307     default:
 308       break;
 309     }
 310 }
 311
 312
 313 /* Answer the height of a window.  If it hasn't been created yet,
 314    answer what the height of a window would be based upon its type and
 315    the layout.  */
 316 int
 317 tui_default_win_height (enum tui_win_type type,
 318                         enum tui_layout_type layout)
 319 {
 320   int h;
 321
 322   if (tui_win_list[type] != (struct tui_win_info *) NULL)
 323     h = tui_win_list[type]->generic.height;
 324   else
 325     {
 326       switch (layout)
 327         {
 328         case SRC_COMMAND:
 329         case DISASSEM_COMMAND:
 330           if (TUI_CMD_WIN == NULL)
 331             h = tui_term_height () / 2;
 332           else
 333             h = tui_term_height () - TUI_CMD_WIN->generic.height;
 334           break;
 335         case SRC_DISASSEM_COMMAND:
 336         case SRC_DATA_COMMAND:
 337         case DISASSEM_DATA_COMMAND:
 338           if (TUI_CMD_WIN == NULL)
 339             h = tui_term_height () / 3;
 340           else
 341             h = (tui_term_height () - TUI_CMD_WIN->generic.height) / 2;
 342           break;
 343         default:
 344           h = 0;
 345           break;
 346         }
 347     }
 348
 349   return h;
 350 }
 351
 352
 353 /* Answer the height of a window.  If it hasn't been created yet,
 354    answer what the height of a window would be based upon its type and
 355    the layout.  */
 356 int
 357 tui_default_win_viewport_height (enum tui_win_type type,
 358                                  enum tui_layout_type layout)
 359 {
 360   int h;
 361
 362   h = tui_default_win_height (type, layout);
 363
 364   if (tui_win_list[type] == TUI_CMD_WIN)
 365     h -= 1;
 366   else
 367     h -= 2;
 368
 369   return h;
 370 }
 371
 372
 373 /* Function to initialize gdb commands, for tui window layout
 374    manipulation.  */
 375 void
 376 _initialize_tui_layout (void)
 377 {
 378   add_com ("layout", class_tui, tui_layout_command, _("\
 379 Change the layout of windows.\n\
 380 Usage: layout prev | next | <layout_name> \n\
 381 Layout names are:\n\
 382    src   : Displays source and command windows.\n\
 383    asm   : Displays disassembly and command windows.\n\
 384    split : Displays source, disassembly and command windows.\n\
 385    regs  : Displays register window. If existing layout\n\
 386            is source/command or assembly/command, the \n\
 387            register window is displayed. If the\n\
 388            source/assembly/command (split) is displayed, \n\
 389            the register window is displayed with \n\
 390            the window that has current logical focus.\n"));
 391   if (xdb_commands)
 392     {
 393       add_com ("td", class_tui, tui_toggle_layout_command, _("\
 394 Toggle between Source/Command and Disassembly/Command layouts.\n"));
 395       add_com ("ts", class_tui, tui_toggle_split_layout_command, _("\
 396 Toggle between Source/Command or Disassembly/Command and \n\
 397 Source/Disassembly/Command layouts.\n"));
 398     }
 399 }
 400
 401
 402 /*************************
 403 ** STATIC LOCAL FUNCTIONS
 404 **************************/
 405
 406
 407 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA,
 408    REGS, $REGS, $GREGS, $FREGS, $SREGS.  */
 409 enum tui_status
 410 tui_set_layout_for_display_command (const char *layout_name)
 411 {
 412   enum tui_status status = TUI_SUCCESS;
 413
 414   if (layout_name != (char *) NULL)
 415     {
 416       int i;
 417       char *buf_ptr;
 418       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 419       enum tui_register_display_type dpy_type = TUI_UNDEFINED_REGS;
 420       enum tui_layout_type cur_layout = tui_current_layout ();
 421
 422       buf_ptr = (char *) xstrdup (layout_name);
 423       for (i = 0; (i < strlen (layout_name)); i++)
 424         buf_ptr[i] = toupper (buf_ptr[i]);
 425
 426       /* First check for ambiguous input.  */
 427       if (strlen (buf_ptr) <= 1 && (*buf_ptr == 'S' || *buf_ptr == '$'))
 428         {
 429           warning (_("Ambiguous command input."));
 430           status = TUI_FAILURE;
 431         }
 432       else
 433         {
 434           if (subset_compare (buf_ptr, "SRC"))
 435             new_layout = SRC_COMMAND;
 436           else if (subset_compare (buf_ptr, "ASM"))
 437             new_layout = DISASSEM_COMMAND;
 438           else if (subset_compare (buf_ptr, "SPLIT"))
 439             new_layout = SRC_DISASSEM_COMMAND;
 440           else if (subset_compare (buf_ptr, "REGS") ||
 441                    subset_compare (buf_ptr, TUI_GENERAL_SPECIAL_REGS_NAME) ||
 442                    subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME) ||
 443                    subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME) ||
 444                    subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 445             {
 446               if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
 447                 new_layout = SRC_DATA_COMMAND;
 448               else
 449                 new_layout = DISASSEM_DATA_COMMAND;
 450
 451               /* Could ifdef out the following code. when compile with
 452                  -z, there are null pointer references that cause a
 453                  core dump if 'layout regs' is the first layout
 454                  command issued by the user. HP has asked us to hook
 455                  up this code.  - edie epstein  */
 456               if (subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME))
 457                 {
 458                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 459                       TUI_SFLOAT_REGS &&
 460                       TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 461                       TUI_DFLOAT_REGS)
 462                     dpy_type = TUI_SFLOAT_REGS;
 463                   else
 464                     dpy_type =
 465                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 466                 }
 467               else if (subset_compare (buf_ptr,
 468                                       TUI_GENERAL_SPECIAL_REGS_NAME))
 469                 dpy_type = TUI_GENERAL_AND_SPECIAL_REGS;
 470               else if (subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME))
 471                 dpy_type = TUI_GENERAL_REGS;
 472               else if (subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 473                 dpy_type = TUI_SPECIAL_REGS;
 474               else if (TUI_DATA_WIN)
 475                 {
 476                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 477                       TUI_UNDEFINED_REGS)
 478                     dpy_type =
 479                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 480                   else
 481                     dpy_type = TUI_GENERAL_REGS;
 482                 }
 483
 484               /* End of potential ifdef.
 485                */
 486
 487               /* If ifdefed out code above, then assume that the user
 488                  wishes to display the general purpose registers .
 489               */
 490
 491               /* dpy_type = TUI_GENERAL_REGS; */
 492             }
 493           else if (subset_compare (buf_ptr, "NEXT"))
 494             new_layout = next_layout ();
 495           else if (subset_compare (buf_ptr, "PREV"))
 496             new_layout = prev_layout ();
 497           else
 498             status = TUI_FAILURE;
 499
 500           tui_set_layout (new_layout, dpy_type);
 501         }
 502       xfree (buf_ptr);
 503     }
 504   else
 505     status = TUI_FAILURE;
 506
 507   return status;
 508 }
 509
 510
 511 static CORE_ADDR
 512 extract_display_start_addr (void)
 513 {
 514   enum tui_layout_type cur_layout = tui_current_layout ();
 515   CORE_ADDR addr;
 516   CORE_ADDR pc;
 517   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 518
 519   switch (cur_layout)
 520     {
 521     case SRC_COMMAND:
 522     case SRC_DATA_COMMAND:
 523       find_line_pc (cursal.symtab,
 524                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 525                     &pc);
 526       addr = pc;
 527       break;
 528     case DISASSEM_COMMAND:
 529     case SRC_DISASSEM_COMMAND:
 530     case DISASSEM_DATA_COMMAND:
 531       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 532       break;
 533     default:
 534       addr = 0;
 535       break;
 536     }
 537
 538   return addr;
 539 }
 540
 541
 542 static void
 543 tui_handle_xdb_layout (struct tui_layout_def *layout_def)
 544 {
 545   if (layout_def->split)
 546     {
 547       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
 548       tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
 549     }
 550   else
 551     {
 552       if (layout_def->display_mode == SRC_WIN)
 553         tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
 554       else
 555         tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
 556     }
 557 }
 558
 559
 560 static void
 561 tui_toggle_layout_command (char *arg, int from_tty)
 562 {
 563   struct tui_layout_def *layout_def = tui_layout_def ();
 564
 565   /* Make sure the curses mode is enabled.  */
 566   tui_enable ();
 567   if (layout_def->display_mode == SRC_WIN)
 568     layout_def->display_mode = DISASSEM_WIN;
 569   else
 570     layout_def->display_mode = SRC_WIN;
 571
 572   if (!layout_def->split)
 573     tui_handle_xdb_layout (layout_def);
 574 }
 575
 576
 577 static void
 578 tui_toggle_split_layout_command (char *arg, int from_tty)
 579 {
 580   struct tui_layout_def *layout_def = tui_layout_def ();
 581
 582   /* Make sure the curses mode is enabled.  */
 583   tui_enable ();
 584   layout_def->split = (!layout_def->split);
 585   tui_handle_xdb_layout (layout_def);
 586 }
 587
 588
 589 static void
 590 tui_layout_command (char *arg, int from_tty)
 591 {
 592   /* Make sure the curses mode is enabled.  */
 593   tui_enable ();
 594
 595   /* Switch to the selected layout.  */
 596   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
 597     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 598
 599 }
 600
 601 /* Answer the previous layout to cycle to.  */
 602 static enum tui_layout_type
 603 next_layout (void)
 604 {
 605   enum tui_layout_type new_layout;
 606
 607   new_layout = tui_current_layout ();
 608   if (new_layout == UNDEFINED_LAYOUT)
 609     new_layout = SRC_COMMAND;
 610   else
 611     {
 612       new_layout++;
 613       if (new_layout == UNDEFINED_LAYOUT)
 614         new_layout = SRC_COMMAND;
 615     }
 616
 617   return new_layout;
 618 }
 619
 620
 621 /* Answer the next layout to cycle to.  */
 622 static enum tui_layout_type
 623 prev_layout (void)
 624 {
 625   enum tui_layout_type new_layout;
 626
 627   new_layout = tui_current_layout ();
 628   if (new_layout == SRC_COMMAND)
 629     new_layout = DISASSEM_DATA_COMMAND;
 630   else
 631     {
 632       new_layout--;
 633       if (new_layout == UNDEFINED_LAYOUT)
 634         new_layout = DISASSEM_DATA_COMMAND;
 635     }
 636
 637   return new_layout;
 638 }
 639
 640
 641
 642 static void
 643 make_command_window (struct tui_win_info **win_info_ptr,
 644                      int height, int origin_y)
 645 {
 646   *win_info_ptr = init_and_make_win (*win_info_ptr,
 647                                      CMD_WIN,
 648                                      height,
 649                                      tui_term_width (),
 650                                      0,
 651                                      origin_y,
 652                                      DONT_BOX_WINDOW);
 653
 654   (*win_info_ptr)->can_highlight = FALSE;
 655 }
 656
 657
 658 /* make_source_window().
 659  */
 660 static void
 661 make_source_window (struct tui_win_info **win_info_ptr,
 662                     int height, int origin_y)
 663 {
 664   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 665
 666   return;
 667 }                               /* make_source_window */
 668
 669
 670 /* make_disasm_window().
 671  */
 672 static void
 673 make_disasm_window (struct tui_win_info **win_info_ptr,
 674                     int height, int origin_y)
 675 {
 676   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 677
 678   return;
 679 }                               /* make_disasm_window */
 680
 681
 682 static void
 683 make_data_window (struct tui_win_info **win_info_ptr,
 684                   int height, int origin_y)
 685 {
 686   *win_info_ptr = init_and_make_win (*win_info_ptr,
 687                                      DATA_WIN,
 688                                      height,
 689                                      tui_term_width (),
 690                                      0,
 691                                      origin_y,
 692                                      BOX_WINDOW);
 693 }
 694
 695
 696
 697 /* Show the Source/Command layout.  */
 698 static void
 699 show_source_command (void)
 700 {
 701   show_source_or_disasm_and_command (SRC_COMMAND);
 702 }
 703
 704
 705 /* Show the Dissassem/Command layout.  */
 706 static void
 707 show_disasm_command (void)
 708 {
 709   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 710 }
 711
 712
 713 /* Show the Source/Disassem/Command layout.  */
 714 static void
 715 show_source_disasm_command (void)
 716 {
 717   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 718     {
 719       int cmd_height, src_height, asm_height;
 720
 721       if (TUI_CMD_WIN != NULL)
 722         cmd_height = TUI_CMD_WIN->generic.height;
 723       else
 724         cmd_height = tui_term_height () / 3;
 725
 726       src_height = (tui_term_height () - cmd_height) / 2;
 727       asm_height = tui_term_height () - (src_height + cmd_height);
 728
 729       if (TUI_SRC_WIN == NULL)
 730         make_source_window (&TUI_SRC_WIN, src_height, 0);
 731       else
 732         {
 733           init_gen_win_info (&TUI_SRC_WIN->generic,
 734                              TUI_SRC_WIN->generic.type,
 735                              src_height,
 736                              TUI_SRC_WIN->generic.width,
 737                              TUI_SRC_WIN->detail.source_info.execution_info->width,
 738                              0);
 739           TUI_SRC_WIN->can_highlight = TRUE;
 740           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 741                              EXEC_INFO_WIN,
 742                              src_height,
 743                              3,
 744                              0,
 745                              0);
 746           tui_make_visible (&TUI_SRC_WIN->generic);
 747           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 748           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 749         }
 750       if (TUI_SRC_WIN != NULL)
 751         {
 752           struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 753
 754           tui_show_source_content (TUI_SRC_WIN);
 755           if (TUI_DISASM_WIN == NULL)
 756             {
 757               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 758               locator = init_and_make_win (locator,
 759                                            LOCATOR_WIN,
 760                                            2 /* 1 */ ,
 761                                            tui_term_width (),
 762                                            0,
 763                                            (src_height + asm_height) - 1,
 764                                            DONT_BOX_WINDOW);
 765             }
 766           else
 767             {
 768               init_gen_win_info (locator,
 769                                  LOCATOR_WIN,
 770                                  2 /* 1 */ ,
 771                                  tui_term_width (),
 772                                  0,
 773                                  (src_height + asm_height) - 1);
 774               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 775               init_gen_win_info (&TUI_DISASM_WIN->generic,
 776                                  TUI_DISASM_WIN->generic.type,
 777                                  asm_height,
 778                                  TUI_DISASM_WIN->generic.width,
 779                                  TUI_DISASM_WIN->detail.source_info.execution_info->width,
 780                                  src_height - 1);
 781               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 782                                  EXEC_INFO_WIN,
 783                                  asm_height,
 784                                  3,
 785                                  0,
 786                                  src_height - 1);
 787               TUI_DISASM_WIN->can_highlight = TRUE;
 788               tui_make_visible (&TUI_DISASM_WIN->generic);
 789               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 790             }
 791           if (TUI_DISASM_WIN != NULL)
 792             {
 793               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 794               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 795               tui_make_visible (locator);
 796               tui_show_locator_content ();
 797               tui_show_source_content (TUI_DISASM_WIN);
 798
 799               if (TUI_CMD_WIN == NULL)
 800                 make_command_window (&TUI_CMD_WIN,
 801                                      cmd_height,
 802                                      tui_term_height () - cmd_height);
 803               else
 804                 {
 805                   init_gen_win_info (&TUI_CMD_WIN->generic,
 806                                      TUI_CMD_WIN->generic.type,
 807                                      TUI_CMD_WIN->generic.height,
 808                                      TUI_CMD_WIN->generic.width,
 809                                      0,
 810                                      TUI_CMD_WIN->generic.origin.y);
 811                   TUI_CMD_WIN->can_highlight = FALSE;
 812                   tui_make_visible (&TUI_CMD_WIN->generic);
 813                 }
 814               if (TUI_CMD_WIN != NULL)
 815                 tui_refresh_win (&TUI_CMD_WIN->generic);
 816             }
 817         }
 818       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 819     }
 820 }
 821
 822
 823 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 824    layout.  */
 825 static void
 826 show_data (enum tui_layout_type new_layout)
 827 {
 828   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 829   int src_height, data_height;
 830   enum tui_win_type win_type;
 831   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 832
 833
 834   data_height = total_height / 2;
 835   src_height = total_height - data_height;
 836   tui_make_all_invisible ();
 837   tui_make_invisible (locator);
 838   make_data_window (&TUI_DATA_WIN, data_height, 0);
 839   TUI_DATA_WIN->can_highlight = TRUE;
 840   if (new_layout == SRC_DATA_COMMAND)
 841     win_type = SRC_WIN;
 842   else
 843     win_type = DISASSEM_WIN;
 844   if (tui_win_list[win_type] == NULL)
 845     {
 846       if (win_type == SRC_WIN)
 847         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 848       else
 849         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 850       locator = init_and_make_win (locator,
 851                                    LOCATOR_WIN,
 852                                    2 /* 1 */ ,
 853                                    tui_term_width (),
 854                                    0,
 855                                    total_height - 1,
 856                                    DONT_BOX_WINDOW);
 857     }
 858   else
 859     {
 860       init_gen_win_info (&tui_win_list[win_type]->generic,
 861                          tui_win_list[win_type]->generic.type,
 862                          src_height,
 863                          tui_win_list[win_type]->generic.width,
 864                          tui_win_list[win_type]->detail.source_info.execution_info->width,
 865                          data_height - 1);
 866       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 867                          EXEC_INFO_WIN,
 868                          src_height,
 869                          3,
 870                          0,
 871                          data_height - 1);
 872       tui_make_visible (&tui_win_list[win_type]->generic);
 873       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 874       init_gen_win_info (locator,
 875                          LOCATOR_WIN,
 876                          2 /* 1 */ ,
 877                          tui_term_width (),
 878                          0,
 879                          total_height - 1);
 880     }
 881   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 882   tui_make_visible (locator);
 883   tui_show_locator_content ();
 884   tui_add_to_source_windows (tui_win_list[win_type]);
 885   tui_set_current_layout_to (new_layout);
 886 }
 887
 888 /* init_gen_win_info().
 889  */
 890 static void
 891 init_gen_win_info (struct tui_gen_win_info *win_info,
 892                    enum tui_win_type type,
 893                    int height, int width,
 894                    int origin_x, int origin_y)
 895 {
 896   int h = height;
 897
 898   win_info->type = type;
 899   win_info->width = width;
 900   win_info->height = h;
 901   if (h > 1)
 902     {
 903       win_info->viewport_height = h - 1;
 904       if (win_info->type != CMD_WIN)
 905         win_info->viewport_height--;
 906     }
 907   else
 908     win_info->viewport_height = 1;
 909   win_info->origin.x = origin_x;
 910   win_info->origin.y = origin_y;
 911
 912   return;
 913 }                               /* init_gen_win_info */
 914
 915 /* init_and_make_win().
 916  */
 917 static void *
 918 init_and_make_win (void *opaque_win_info,
 919                    enum tui_win_type win_type,
 920                    int height, int width,
 921                    int origin_x, int origin_y,
 922                    int box_it)
 923 {
 924   struct tui_gen_win_info *generic;
 925
 926   if (opaque_win_info == NULL)
 927     {
 928       if (tui_win_is_auxillary (win_type))
 929         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 930       else
 931         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 932     }
 933   if (tui_win_is_auxillary (win_type))
 934     generic = (struct tui_gen_win_info *) opaque_win_info;
 935   else
 936     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 937
 938   if (opaque_win_info != NULL)
 939     {
 940       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 941       if (!tui_win_is_auxillary (win_type))
 942         {
 943           if (generic->type == CMD_WIN)
 944             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 945           else
 946             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 947         }
 948       tui_make_window (generic, box_it);
 949     }
 950   return opaque_win_info;
 951 }
 952
 953
 954 static void
 955 make_source_or_disasm_window (struct tui_win_info **win_info_ptr,
 956                               enum tui_win_type type,
 957                               int height, int origin_y)
 958 {
 959   struct tui_gen_win_info *execution_info = (struct tui_gen_win_info *) NULL;
 960
 961   /* Create the exeuction info window.  */
 962   if (type == SRC_WIN)
 963     execution_info = tui_source_exec_info_win_ptr ();
 964   else
 965     execution_info = tui_disassem_exec_info_win_ptr ();
 966   execution_info = init_and_make_win (execution_info,
 967                                       EXEC_INFO_WIN,
 968                                       height,
 969                                       3,
 970                                       0,
 971                                       origin_y,
 972                                       DONT_BOX_WINDOW);
 973
 974   /* Now create the source window.  */
 975   *win_info_ptr = init_and_make_win (*win_info_ptr,
 976                                      type,
 977                                      height,
 978                                      tui_term_width () - execution_info->width,
 979                                      execution_info->width,
 980                                      origin_y,
 981                                      BOX_WINDOW);
 982
 983   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 984 }
 985
 986
 987 /* Show the Source/Command or the Disassem layout.  */
 988 static void
 989 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 990 {
 991   if (tui_current_layout () != layout_type)
 992     {
 993       struct tui_win_info **win_info_ptr;
 994       int src_height, cmd_height;
 995       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 996
 997       if (TUI_CMD_WIN != NULL)
 998         cmd_height = TUI_CMD_WIN->generic.height;
 999       else
1000         cmd_height = tui_term_height () / 3;
1001       src_height = tui_term_height () - cmd_height;
1002
1003       if (layout_type == SRC_COMMAND)
1004         win_info_ptr = &TUI_SRC_WIN;
1005       else
1006         win_info_ptr = &TUI_DISASM_WIN;
1007
1008       if ((*win_info_ptr) == NULL)
1009         {
1010           if (layout_type == SRC_COMMAND)
1011             make_source_window (win_info_ptr, src_height - 1, 0);
1012           else
1013             make_disasm_window (win_info_ptr, src_height - 1, 0);
1014           locator = init_and_make_win (locator,
1015                                        LOCATOR_WIN,
1016                                        2 /* 1 */ ,
1017                                        tui_term_width (),
1018                                        0,
1019                                        src_height - 1,
1020                                        DONT_BOX_WINDOW);
1021         }
1022       else
1023         {
1024           init_gen_win_info (locator,
1025                              LOCATOR_WIN,
1026                              2 /* 1 */ ,
1027                              tui_term_width (),
1028                              0,
1029                              src_height - 1);
1030           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1031           init_gen_win_info (&(*win_info_ptr)->generic,
1032                              (*win_info_ptr)->generic.type,
1033                              src_height - 1,
1034                              (*win_info_ptr)->generic.width,
1035                              (*win_info_ptr)->detail.source_info.execution_info->width,
1036                              0);
1037           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1038                              EXEC_INFO_WIN,
1039                              src_height - 1,
1040                              3,
1041                              0,
1042                              0);
1043           (*win_info_ptr)->can_highlight = TRUE;
1044           tui_make_visible (&(*win_info_ptr)->generic);
1045           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1046         }
1047       if ((*win_info_ptr) != NULL)
1048         {
1049           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1050           tui_make_visible (locator);
1051           tui_show_locator_content ();
1052           tui_show_source_content (*win_info_ptr);
1053
1054           if (TUI_CMD_WIN == NULL)
1055             {
1056               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1057               tui_refresh_win (&TUI_CMD_WIN->generic);
1058             }
1059           else
1060             {
1061               init_gen_win_info (&TUI_CMD_WIN->generic,
1062                                  TUI_CMD_WIN->generic.type,
1063                                  TUI_CMD_WIN->generic.height,
1064                                  TUI_CMD_WIN->generic.width,
1065                                  TUI_CMD_WIN->generic.origin.x,
1066                                  TUI_CMD_WIN->generic.origin.y);
1067               TUI_CMD_WIN->can_highlight = FALSE;
1068               tui_make_visible (&TUI_CMD_WIN->generic);
1069             }
1070         }
1071       tui_set_current_layout_to (layout_type);
1072     }
1073 }