gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009
   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 3 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, see <http://www.gnu.org/licenses/>.  */
  22
  23 #include "defs.h"
  24 #include "command.h"
  25 #include "symtab.h"
  26 #include "frame.h"
  27 #include "source.h"
  28 #include <ctype.h>
  29
  30 #include "tui/tui.h"
  31 #include "tui/tui-data.h"
  32 #include "tui/tui-windata.h"
  33 #include "tui/tui-wingeneral.h"
  34 #include "tui/tui-stack.h"
  35 #include "tui/tui-regs.h"
  36 #include "tui/tui-win.h"
  37 #include "tui/tui-winsource.h"
  38 #include "tui/tui-disasm.h"
  39 #include "tui/tui-layout.h"
  40
  41 #include "gdb_string.h"
  42 #include "gdb_curses.h"
  43
  44 /*******************************
  45 ** Static Local Decls
  46 ********************************/
  47 static void show_layout (enum tui_layout_type);
  48 static void init_gen_win_info (struct tui_gen_win_info *,
  49                                enum tui_win_type,
  50                                int, int, int, int);
  51 static void *init_and_make_win (void *, enum tui_win_type,
  52                                 int, int, int, int, int);
  53 static void show_source_or_disasm_and_command (enum tui_layout_type);
  54 static void make_source_or_disasm_window (struct tui_win_info **,
  55                                           enum tui_win_type,
  56                                           int, int);
  57 static void make_command_window (struct tui_win_info **, int, int);
  58 static void make_source_window (struct tui_win_info **, int, int);
  59 static void make_disasm_window (struct tui_win_info **, int, int);
  60 static void make_data_window (struct tui_win_info **, int, int);
  61 static void show_source_command (void);
  62 static void show_disasm_command (void);
  63 static void show_source_disasm_command (void);
  64 static void show_data (enum tui_layout_type);
  65 static enum tui_layout_type next_layout (void);
  66 static enum tui_layout_type prev_layout (void);
  67 static void tui_layout_command (char *, int);
  68 static void tui_toggle_layout_command (char *, int);
  69 static void tui_toggle_split_layout_command (char *, int);
  70 static CORE_ADDR extract_display_start_addr (void);
  71 static void tui_handle_xdb_layout (struct tui_layout_def *);
  72
  73
  74 /***************************************
  75 ** DEFINITIONS
  76 ***************************************/
  77
  78 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
  79
  80 /* Show the screen layout defined.  */
  81 static void
  82 show_layout (enum tui_layout_type layout)
  83 {
  84   enum tui_layout_type cur_layout = tui_current_layout ();
  85
  86   if (layout != cur_layout)
  87     {
  88       /* Since the new layout may cause changes in window size, we
  89          should free the content and reallocate on next display of
  90          source/asm.  */
  91       tui_free_all_source_wins_content ();
  92       tui_clear_source_windows ();
  93       if (layout == SRC_DATA_COMMAND
  94           || 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
 141       || regs_display_type != TUI_UNDEFINED_REGS)
 142     {
 143       enum tui_layout_type cur_layout = tui_current_layout (),
 144         new_layout = UNDEFINED_LAYOUT;
 145       int regs_populate = FALSE;
 146       CORE_ADDR addr = extract_display_start_addr ();
 147       struct tui_win_info *win_with_focus = tui_win_with_focus ();
 148       struct tui_layout_def *layout_def = tui_layout_def ();
 149
 150
 151       if (layout_type == UNDEFINED_LAYOUT
 152           && regs_display_type != TUI_UNDEFINED_REGS)
 153         {
 154           if (cur_layout == SRC_DISASSEM_COMMAND)
 155             new_layout = DISASSEM_DATA_COMMAND;
 156           else if (cur_layout == SRC_COMMAND
 157                    || cur_layout == SRC_DATA_COMMAND)
 158             new_layout = SRC_DATA_COMMAND;
 159           else if (cur_layout == DISASSEM_COMMAND
 160                    || cur_layout == DISASSEM_DATA_COMMAND)
 161             new_layout = DISASSEM_DATA_COMMAND;
 162         }
 163       else
 164         new_layout = layout_type;
 165
 166       regs_populate = (new_layout == SRC_DATA_COMMAND
 167                        || new_layout == DISASSEM_DATA_COMMAND
 168                        || regs_display_type != TUI_UNDEFINED_REGS);
 169       if (new_layout != cur_layout
 170           || regs_display_type != TUI_UNDEFINED_REGS)
 171         {
 172           if (new_layout != cur_layout)
 173             {
 174               show_layout (new_layout);
 175
 176               /* Now determine where focus should be.  */
 177               if (win_with_focus != TUI_CMD_WIN)
 178                 {
 179                   switch (new_layout)
 180                     {
 181                     case SRC_COMMAND:
 182                       tui_set_win_focus_to (TUI_SRC_WIN);
 183                       layout_def->display_mode = SRC_WIN;
 184                       layout_def->split = FALSE;
 185                       break;
 186                     case DISASSEM_COMMAND:
 187                       /* The previous layout was not showing code.
 188                          This can happen if there is no source
 189                          available:
 190
 191                          1. if the source file is in another dir OR
 192                          2. if target was compiled without -g
 193                          We still want to show the assembly though!  */
 194
 195                       addr = tui_get_begin_asm_address ();
 196                       tui_set_win_focus_to (TUI_DISASM_WIN);
 197                       layout_def->display_mode = DISASSEM_WIN;
 198                       layout_def->split = FALSE;
 199                       break;
 200                     case SRC_DISASSEM_COMMAND:
 201                       /* The previous layout was not showing code.
 202                          This can happen if there is no source
 203                          available:
 204
 205                          1. if the source file is in another dir OR
 206                          2. if target was compiled without -g
 207                          We still want to show the assembly though!  */
 208
 209                       addr = tui_get_begin_asm_address ();
 210                       if (win_with_focus == TUI_SRC_WIN)
 211                         tui_set_win_focus_to (TUI_SRC_WIN);
 212                       else
 213                         tui_set_win_focus_to (TUI_DISASM_WIN);
 214                       layout_def->split = TRUE;
 215                       break;
 216                     case SRC_DATA_COMMAND:
 217                       if (win_with_focus != TUI_DATA_WIN)
 218                         tui_set_win_focus_to (TUI_SRC_WIN);
 219                       else
 220                         tui_set_win_focus_to (TUI_DATA_WIN);
 221                       layout_def->display_mode = SRC_WIN;
 222                       layout_def->split = FALSE;
 223                       break;
 224                     case DISASSEM_DATA_COMMAND:
 225                       /* The previous layout was not showing code.
 226                          This can happen if there is no source
 227                          available:
 228
 229                          1. if the source file is in another dir OR
 230                          2. if target was compiled without -g
 231                          We still want to show the assembly though!  */
 232
 233                       addr = tui_get_begin_asm_address ();
 234                       if (win_with_focus != TUI_DATA_WIN)
 235                         tui_set_win_focus_to (TUI_DISASM_WIN);
 236                       else
 237                         tui_set_win_focus_to (TUI_DATA_WIN);
 238                       layout_def->display_mode = DISASSEM_WIN;
 239                       layout_def->split = FALSE;
 240                       break;
 241                     default:
 242                       break;
 243                     }
 244                 }
 245               /*
 246                * Now update the window content.
 247                */
 248               if (!regs_populate
 249                   && (new_layout == SRC_DATA_COMMAND
 250                       || new_layout == DISASSEM_DATA_COMMAND))
 251                 tui_display_all_data ();
 252
 253               tui_update_source_windows_with_addr (addr);
 254             }
 255           if (regs_populate)
 256             {
 257               tui_show_registers (TUI_DATA_WIN->detail.data_display_info.current_group);
 258             }
 259         }
 260     }
 261   else
 262     status = TUI_FAILURE;
 263
 264   return status;
 265 }
 266
 267 /* Add the specified window to the layout in a logical way.  This
 268    means setting up the most logical layout given the window to be
 269    added.  */
 270 void
 271 tui_add_win_to_layout (enum tui_win_type type)
 272 {
 273   enum tui_layout_type cur_layout = tui_current_layout ();
 274
 275   switch (type)
 276     {
 277     case SRC_WIN:
 278       if (cur_layout != SRC_COMMAND
 279           && cur_layout != SRC_DISASSEM_COMMAND
 280           && cur_layout != SRC_DATA_COMMAND)
 281         {
 282           tui_clear_source_windows_detail ();
 283           if (cur_layout == DISASSEM_DATA_COMMAND)
 284             show_layout (SRC_DATA_COMMAND);
 285           else
 286             show_layout (SRC_COMMAND);
 287         }
 288       break;
 289     case DISASSEM_WIN:
 290       if (cur_layout != DISASSEM_COMMAND
 291           && cur_layout != SRC_DISASSEM_COMMAND
 292           && cur_layout != DISASSEM_DATA_COMMAND)
 293         {
 294           tui_clear_source_windows_detail ();
 295           if (cur_layout == SRC_DATA_COMMAND)
 296             show_layout (DISASSEM_DATA_COMMAND);
 297           else
 298             show_layout (DISASSEM_COMMAND);
 299         }
 300       break;
 301     case DATA_WIN:
 302       if (cur_layout != SRC_DATA_COMMAND
 303           && cur_layout != DISASSEM_DATA_COMMAND)
 304         {
 305           if (cur_layout == DISASSEM_COMMAND)
 306             show_layout (DISASSEM_DATA_COMMAND);
 307           else
 308             show_layout (SRC_DATA_COMMAND);
 309         }
 310       break;
 311     default:
 312       break;
 313     }
 314 }
 315
 316
 317 /* Answer the height of a window.  If it hasn't been created yet,
 318    answer what the height of a window would be based upon its type and
 319    the layout.  */
 320 int
 321 tui_default_win_height (enum tui_win_type type,
 322                         enum tui_layout_type layout)
 323 {
 324   int h;
 325
 326   if (tui_win_list[type] != (struct tui_win_info *) NULL)
 327     h = tui_win_list[type]->generic.height;
 328   else
 329     {
 330       switch (layout)
 331         {
 332         case SRC_COMMAND:
 333         case DISASSEM_COMMAND:
 334           if (TUI_CMD_WIN == NULL)
 335             h = tui_term_height () / 2;
 336           else
 337             h = tui_term_height () - TUI_CMD_WIN->generic.height;
 338           break;
 339         case SRC_DISASSEM_COMMAND:
 340         case SRC_DATA_COMMAND:
 341         case DISASSEM_DATA_COMMAND:
 342           if (TUI_CMD_WIN == NULL)
 343             h = tui_term_height () / 3;
 344           else
 345             h = (tui_term_height () - TUI_CMD_WIN->generic.height) / 2;
 346           break;
 347         default:
 348           h = 0;
 349           break;
 350         }
 351     }
 352
 353   return h;
 354 }
 355
 356
 357 /* Answer the height of a window.  If it hasn't been created yet,
 358    answer what the height of a window would be based upon its type and
 359    the layout.  */
 360 int
 361 tui_default_win_viewport_height (enum tui_win_type type,
 362                                  enum tui_layout_type layout)
 363 {
 364   int h;
 365
 366   h = tui_default_win_height (type, layout);
 367
 368   if (tui_win_list[type] == TUI_CMD_WIN)
 369     h -= 1;
 370   else
 371     h -= 2;
 372
 373   return h;
 374 }
 375
 376
 377 /* Function to initialize gdb commands, for tui window layout
 378    manipulation.  */
 379
 380 /* Provide a prototype to silence -Wmissing-prototypes.  */
 381 extern initialize_file_ftype _initialize_tui_layout;
 382
 383 void
 384 _initialize_tui_layout (void)
 385 {
 386   add_com ("layout", class_tui, tui_layout_command, _("\
 387 Change the layout of windows.\n\
 388 Usage: layout prev | next | <layout_name> \n\
 389 Layout names are:\n\
 390    src   : Displays source and command windows.\n\
 391    asm   : Displays disassembly and command windows.\n\
 392    split : Displays source, disassembly and command windows.\n\
 393    regs  : Displays register window. If existing layout\n\
 394            is source/command or assembly/command, the \n\
 395            register window is displayed. If the\n\
 396            source/assembly/command (split) is displayed, \n\
 397            the register window is displayed with \n\
 398            the window that has current logical focus.\n"));
 399   if (xdb_commands)
 400     {
 401       add_com ("td", class_tui, tui_toggle_layout_command, _("\
 402 Toggle between Source/Command and Disassembly/Command layouts.\n"));
 403       add_com ("ts", class_tui, tui_toggle_split_layout_command, _("\
 404 Toggle between Source/Command or Disassembly/Command and \n\
 405 Source/Disassembly/Command layouts.\n"));
 406     }
 407 }
 408
 409
 410 /*************************
 411 ** STATIC LOCAL FUNCTIONS
 412 **************************/
 413
 414
 415 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA,
 416    REGS, $REGS, $GREGS, $FREGS, $SREGS.  */
 417 enum tui_status
 418 tui_set_layout_for_display_command (const char *layout_name)
 419 {
 420   enum tui_status status = TUI_SUCCESS;
 421
 422   if (layout_name != (char *) NULL)
 423     {
 424       int i;
 425       char *buf_ptr;
 426       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 427       enum tui_register_display_type dpy_type = TUI_UNDEFINED_REGS;
 428       enum tui_layout_type cur_layout = tui_current_layout ();
 429
 430       buf_ptr = (char *) xstrdup (layout_name);
 431       for (i = 0; (i < strlen (layout_name)); i++)
 432         buf_ptr[i] = toupper (buf_ptr[i]);
 433
 434       /* First check for ambiguous input.  */
 435       if (strlen (buf_ptr) <= 1
 436           && (*buf_ptr == 'S' || *buf_ptr == '$'))
 437         {
 438           warning (_("Ambiguous command input."));
 439           status = TUI_FAILURE;
 440         }
 441       else
 442         {
 443           if (subset_compare (buf_ptr, "SRC"))
 444             new_layout = SRC_COMMAND;
 445           else if (subset_compare (buf_ptr, "ASM"))
 446             new_layout = DISASSEM_COMMAND;
 447           else if (subset_compare (buf_ptr, "SPLIT"))
 448             new_layout = SRC_DISASSEM_COMMAND;
 449           else if (subset_compare (buf_ptr, "REGS")
 450                    || subset_compare (buf_ptr, TUI_GENERAL_SPECIAL_REGS_NAME)
 451                    || subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME)
 452                    || subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME)
 453                    || subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 454             {
 455               if (cur_layout == SRC_COMMAND
 456                   || cur_layout == SRC_DATA_COMMAND)
 457                 new_layout = SRC_DATA_COMMAND;
 458               else
 459                 new_layout = DISASSEM_DATA_COMMAND;
 460
 461               /* Could ifdef out the following code. when compile with
 462                  -z, there are null pointer references that cause a
 463                  core dump if 'layout regs' is the first layout
 464                  command issued by the user. HP has asked us to hook
 465                  up this code.  - edie epstein  */
 466               if (subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME))
 467                 {
 468                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type != TUI_SFLOAT_REGS
 469                       && TUI_DATA_WIN->detail.data_display_info.regs_display_type != TUI_DFLOAT_REGS)
 470                     dpy_type = TUI_SFLOAT_REGS;
 471                   else
 472                     dpy_type =
 473                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 474                 }
 475               else if (subset_compare (buf_ptr,
 476                                       TUI_GENERAL_SPECIAL_REGS_NAME))
 477                 dpy_type = TUI_GENERAL_AND_SPECIAL_REGS;
 478               else if (subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME))
 479                 dpy_type = TUI_GENERAL_REGS;
 480               else if (subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 481                 dpy_type = TUI_SPECIAL_REGS;
 482               else if (TUI_DATA_WIN)
 483                 {
 484                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 485                       TUI_UNDEFINED_REGS)
 486                     dpy_type =
 487                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 488                   else
 489                     dpy_type = TUI_GENERAL_REGS;
 490                 }
 491
 492               /* End of potential ifdef.
 493                */
 494
 495               /* If ifdefed out code above, then assume that the user
 496                  wishes to display the general purpose registers .
 497               */
 498
 499               /* dpy_type = TUI_GENERAL_REGS; */
 500             }
 501           else if (subset_compare (buf_ptr, "NEXT"))
 502             new_layout = next_layout ();
 503           else if (subset_compare (buf_ptr, "PREV"))
 504             new_layout = prev_layout ();
 505           else
 506             status = TUI_FAILURE;
 507
 508           tui_set_layout (new_layout, dpy_type);
 509         }
 510       xfree (buf_ptr);
 511     }
 512   else
 513     status = TUI_FAILURE;
 514
 515   return status;
 516 }
 517
 518
 519 static CORE_ADDR
 520 extract_display_start_addr (void)
 521 {
 522   enum tui_layout_type cur_layout = tui_current_layout ();
 523   CORE_ADDR addr;
 524   CORE_ADDR pc;
 525   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 526
 527   switch (cur_layout)
 528     {
 529     case SRC_COMMAND:
 530     case SRC_DATA_COMMAND:
 531       find_line_pc (cursal.symtab,
 532                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 533                     &pc);
 534       addr = pc;
 535       break;
 536     case DISASSEM_COMMAND:
 537     case SRC_DISASSEM_COMMAND:
 538     case DISASSEM_DATA_COMMAND:
 539       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 540       break;
 541     default:
 542       addr = 0;
 543       break;
 544     }
 545
 546   return addr;
 547 }
 548
 549
 550 static void
 551 tui_handle_xdb_layout (struct tui_layout_def *layout_def)
 552 {
 553   if (layout_def->split)
 554     {
 555       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
 556       tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
 557     }
 558   else
 559     {
 560       if (layout_def->display_mode == SRC_WIN)
 561         tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
 562       else
 563         tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
 564     }
 565 }
 566
 567
 568 static void
 569 tui_toggle_layout_command (char *arg, int from_tty)
 570 {
 571   struct tui_layout_def *layout_def = tui_layout_def ();
 572
 573   /* Make sure the curses mode is enabled.  */
 574   tui_enable ();
 575   if (layout_def->display_mode == SRC_WIN)
 576     layout_def->display_mode = DISASSEM_WIN;
 577   else
 578     layout_def->display_mode = SRC_WIN;
 579
 580   if (!layout_def->split)
 581     tui_handle_xdb_layout (layout_def);
 582 }
 583
 584
 585 static void
 586 tui_toggle_split_layout_command (char *arg, int from_tty)
 587 {
 588   struct tui_layout_def *layout_def = tui_layout_def ();
 589
 590   /* Make sure the curses mode is enabled.  */
 591   tui_enable ();
 592   layout_def->split = (!layout_def->split);
 593   tui_handle_xdb_layout (layout_def);
 594 }
 595
 596
 597 static void
 598 tui_layout_command (char *arg, int from_tty)
 599 {
 600   /* Make sure the curses mode is enabled.  */
 601   tui_enable ();
 602
 603   /* Switch to the selected layout.  */
 604   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
 605     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 606
 607 }
 608
 609 /* Answer the previous layout to cycle to.  */
 610 static enum tui_layout_type
 611 next_layout (void)
 612 {
 613   enum tui_layout_type new_layout;
 614
 615   new_layout = tui_current_layout ();
 616   if (new_layout == UNDEFINED_LAYOUT)
 617     new_layout = SRC_COMMAND;
 618   else
 619     {
 620       new_layout++;
 621       if (new_layout == UNDEFINED_LAYOUT)
 622         new_layout = SRC_COMMAND;
 623     }
 624
 625   return new_layout;
 626 }
 627
 628
 629 /* Answer the next layout to cycle to.  */
 630 static enum tui_layout_type
 631 prev_layout (void)
 632 {
 633   enum tui_layout_type new_layout;
 634
 635   new_layout = tui_current_layout ();
 636   if (new_layout == SRC_COMMAND)
 637     new_layout = DISASSEM_DATA_COMMAND;
 638   else
 639     {
 640       new_layout--;
 641       if (new_layout == UNDEFINED_LAYOUT)
 642         new_layout = DISASSEM_DATA_COMMAND;
 643     }
 644
 645   return new_layout;
 646 }
 647
 648
 649
 650 static void
 651 make_command_window (struct tui_win_info **win_info_ptr,
 652                      int height, int origin_y)
 653 {
 654   *win_info_ptr = init_and_make_win (*win_info_ptr,
 655                                      CMD_WIN,
 656                                      height,
 657                                      tui_term_width (),
 658                                      0,
 659                                      origin_y,
 660                                      DONT_BOX_WINDOW);
 661
 662   (*win_info_ptr)->can_highlight = FALSE;
 663 }
 664
 665
 666 /* make_source_window().
 667  */
 668 static void
 669 make_source_window (struct tui_win_info **win_info_ptr,
 670                     int height, int origin_y)
 671 {
 672   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 673
 674   return;
 675 }                               /* make_source_window */
 676
 677
 678 /* make_disasm_window().
 679  */
 680 static void
 681 make_disasm_window (struct tui_win_info **win_info_ptr,
 682                     int height, int origin_y)
 683 {
 684   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 685
 686   return;
 687 }                               /* make_disasm_window */
 688
 689
 690 static void
 691 make_data_window (struct tui_win_info **win_info_ptr,
 692                   int height, int origin_y)
 693 {
 694   *win_info_ptr = init_and_make_win (*win_info_ptr,
 695                                      DATA_WIN,
 696                                      height,
 697                                      tui_term_width (),
 698                                      0,
 699                                      origin_y,
 700                                      BOX_WINDOW);
 701 }
 702
 703
 704
 705 /* Show the Source/Command layout.  */
 706 static void
 707 show_source_command (void)
 708 {
 709   show_source_or_disasm_and_command (SRC_COMMAND);
 710 }
 711
 712
 713 /* Show the Dissassem/Command layout.  */
 714 static void
 715 show_disasm_command (void)
 716 {
 717   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 718 }
 719
 720
 721 /* Show the Source/Disassem/Command layout.  */
 722 static void
 723 show_source_disasm_command (void)
 724 {
 725   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 726     {
 727       int cmd_height, src_height, asm_height;
 728
 729       if (TUI_CMD_WIN != NULL)
 730         cmd_height = TUI_CMD_WIN->generic.height;
 731       else
 732         cmd_height = tui_term_height () / 3;
 733
 734       src_height = (tui_term_height () - cmd_height) / 2;
 735       asm_height = tui_term_height () - (src_height + cmd_height);
 736
 737       if (TUI_SRC_WIN == NULL)
 738         make_source_window (&TUI_SRC_WIN, src_height, 0);
 739       else
 740         {
 741           init_gen_win_info (&TUI_SRC_WIN->generic,
 742                              TUI_SRC_WIN->generic.type,
 743                              src_height,
 744                              TUI_SRC_WIN->generic.width,
 745                              TUI_SRC_WIN->detail.source_info.execution_info->width,
 746                              0);
 747           TUI_SRC_WIN->can_highlight = TRUE;
 748           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 749                              EXEC_INFO_WIN,
 750                              src_height,
 751                              3,
 752                              0,
 753                              0);
 754           tui_make_visible (&TUI_SRC_WIN->generic);
 755           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 756           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 757         }
 758       if (TUI_SRC_WIN != NULL)
 759         {
 760           struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 761
 762           tui_show_source_content (TUI_SRC_WIN);
 763           if (TUI_DISASM_WIN == NULL)
 764             {
 765               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 766               locator = init_and_make_win (locator,
 767                                            LOCATOR_WIN,
 768                                            2 /* 1 */ ,
 769                                            tui_term_width (),
 770                                            0,
 771                                            (src_height + asm_height) - 1,
 772                                            DONT_BOX_WINDOW);
 773             }
 774           else
 775             {
 776               init_gen_win_info (locator,
 777                                  LOCATOR_WIN,
 778                                  2 /* 1 */ ,
 779                                  tui_term_width (),
 780                                  0,
 781                                  (src_height + asm_height) - 1);
 782               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 783               init_gen_win_info (&TUI_DISASM_WIN->generic,
 784                                  TUI_DISASM_WIN->generic.type,
 785                                  asm_height,
 786                                  TUI_DISASM_WIN->generic.width,
 787                                  TUI_DISASM_WIN->detail.source_info.execution_info->width,
 788                                  src_height - 1);
 789               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 790                                  EXEC_INFO_WIN,
 791                                  asm_height,
 792                                  3,
 793                                  0,
 794                                  src_height - 1);
 795               TUI_DISASM_WIN->can_highlight = TRUE;
 796               tui_make_visible (&TUI_DISASM_WIN->generic);
 797               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 798             }
 799           if (TUI_DISASM_WIN != NULL)
 800             {
 801               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 802               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 803               tui_make_visible (locator);
 804               tui_show_locator_content ();
 805               tui_show_source_content (TUI_DISASM_WIN);
 806
 807               if (TUI_CMD_WIN == NULL)
 808                 make_command_window (&TUI_CMD_WIN,
 809                                      cmd_height,
 810                                      tui_term_height () - cmd_height);
 811               else
 812                 {
 813                   init_gen_win_info (&TUI_CMD_WIN->generic,
 814                                      TUI_CMD_WIN->generic.type,
 815                                      TUI_CMD_WIN->generic.height,
 816                                      TUI_CMD_WIN->generic.width,
 817                                      0,
 818                                      TUI_CMD_WIN->generic.origin.y);
 819                   TUI_CMD_WIN->can_highlight = FALSE;
 820                   tui_make_visible (&TUI_CMD_WIN->generic);
 821                 }
 822               if (TUI_CMD_WIN != NULL)
 823                 tui_refresh_win (&TUI_CMD_WIN->generic);
 824             }
 825         }
 826       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 827     }
 828 }
 829
 830
 831 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 832    layout.  */
 833 static void
 834 show_data (enum tui_layout_type new_layout)
 835 {
 836   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 837   int src_height, data_height;
 838   enum tui_win_type win_type;
 839   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 840
 841
 842   data_height = total_height / 2;
 843   src_height = total_height - data_height;
 844   tui_make_all_invisible ();
 845   tui_make_invisible (locator);
 846   make_data_window (&TUI_DATA_WIN, data_height, 0);
 847   TUI_DATA_WIN->can_highlight = TRUE;
 848   if (new_layout == SRC_DATA_COMMAND)
 849     win_type = SRC_WIN;
 850   else
 851     win_type = DISASSEM_WIN;
 852   if (tui_win_list[win_type] == NULL)
 853     {
 854       if (win_type == SRC_WIN)
 855         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 856       else
 857         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 858       locator = init_and_make_win (locator,
 859                                    LOCATOR_WIN,
 860                                    2 /* 1 */ ,
 861                                    tui_term_width (),
 862                                    0,
 863                                    total_height - 1,
 864                                    DONT_BOX_WINDOW);
 865     }
 866   else
 867     {
 868       init_gen_win_info (&tui_win_list[win_type]->generic,
 869                          tui_win_list[win_type]->generic.type,
 870                          src_height,
 871                          tui_win_list[win_type]->generic.width,
 872                          tui_win_list[win_type]->detail.source_info.execution_info->width,
 873                          data_height - 1);
 874       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 875                          EXEC_INFO_WIN,
 876                          src_height,
 877                          3,
 878                          0,
 879                          data_height - 1);
 880       tui_make_visible (&tui_win_list[win_type]->generic);
 881       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 882       init_gen_win_info (locator,
 883                          LOCATOR_WIN,
 884                          2 /* 1 */ ,
 885                          tui_term_width (),
 886                          0,
 887                          total_height - 1);
 888     }
 889   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 890   tui_make_visible (locator);
 891   tui_show_locator_content ();
 892   tui_add_to_source_windows (tui_win_list[win_type]);
 893   tui_set_current_layout_to (new_layout);
 894 }
 895
 896 /* init_gen_win_info().
 897  */
 898 static void
 899 init_gen_win_info (struct tui_gen_win_info *win_info,
 900                    enum tui_win_type type,
 901                    int height, int width,
 902                    int origin_x, int origin_y)
 903 {
 904   int h = height;
 905
 906   win_info->type = type;
 907   win_info->width = width;
 908   win_info->height = h;
 909   if (h > 1)
 910     {
 911       win_info->viewport_height = h - 1;
 912       if (win_info->type != CMD_WIN)
 913         win_info->viewport_height--;
 914     }
 915   else
 916     win_info->viewport_height = 1;
 917   win_info->origin.x = origin_x;
 918   win_info->origin.y = origin_y;
 919
 920   return;
 921 }                               /* init_gen_win_info */
 922
 923 /* init_and_make_win().
 924  */
 925 static void *
 926 init_and_make_win (void *opaque_win_info,
 927                    enum tui_win_type win_type,
 928                    int height, int width,
 929                    int origin_x, int origin_y,
 930                    int box_it)
 931 {
 932   struct tui_gen_win_info *generic;
 933
 934   if (opaque_win_info == NULL)
 935     {
 936       if (tui_win_is_auxillary (win_type))
 937         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 938       else
 939         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 940     }
 941   if (tui_win_is_auxillary (win_type))
 942     generic = (struct tui_gen_win_info *) opaque_win_info;
 943   else
 944     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 945
 946   if (opaque_win_info != NULL)
 947     {
 948       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 949       if (!tui_win_is_auxillary (win_type))
 950         {
 951           if (generic->type == CMD_WIN)
 952             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 953           else
 954             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 955         }
 956       tui_make_window (generic, box_it);
 957     }
 958   return opaque_win_info;
 959 }
 960
 961
 962 static void
 963 make_source_or_disasm_window (struct tui_win_info **win_info_ptr,
 964                               enum tui_win_type type,
 965                               int height, int origin_y)
 966 {
 967   struct tui_gen_win_info *execution_info = (struct tui_gen_win_info *) NULL;
 968
 969   /* Create the exeuction info window.  */
 970   if (type == SRC_WIN)
 971     execution_info = tui_source_exec_info_win_ptr ();
 972   else
 973     execution_info = tui_disassem_exec_info_win_ptr ();
 974   execution_info = init_and_make_win (execution_info,
 975                                       EXEC_INFO_WIN,
 976                                       height,
 977                                       3,
 978                                       0,
 979                                       origin_y,
 980                                       DONT_BOX_WINDOW);
 981
 982   /* Now create the source window.  */
 983   *win_info_ptr = init_and_make_win (*win_info_ptr,
 984                                      type,
 985                                      height,
 986                                      tui_term_width () - execution_info->width,
 987                                      execution_info->width,
 988                                      origin_y,
 989                                      BOX_WINDOW);
 990
 991   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 992 }
 993
 994
 995 /* Show the Source/Command or the Disassem layout.  */
 996 static void
 997 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 998 {
 999   if (tui_current_layout () != layout_type)
1000     {
1001       struct tui_win_info **win_info_ptr;
1002       int src_height, cmd_height;
1003       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
1004
1005       if (TUI_CMD_WIN != NULL)
1006         cmd_height = TUI_CMD_WIN->generic.height;
1007       else
1008         cmd_height = tui_term_height () / 3;
1009       src_height = tui_term_height () - cmd_height;
1010
1011       if (layout_type == SRC_COMMAND)
1012         win_info_ptr = &TUI_SRC_WIN;
1013       else
1014         win_info_ptr = &TUI_DISASM_WIN;
1015
1016       if ((*win_info_ptr) == NULL)
1017         {
1018           if (layout_type == SRC_COMMAND)
1019             make_source_window (win_info_ptr, src_height - 1, 0);
1020           else
1021             make_disasm_window (win_info_ptr, src_height - 1, 0);
1022           locator = init_and_make_win (locator,
1023                                        LOCATOR_WIN,
1024                                        2 /* 1 */ ,
1025                                        tui_term_width (),
1026                                        0,
1027                                        src_height - 1,
1028                                        DONT_BOX_WINDOW);
1029         }
1030       else
1031         {
1032           init_gen_win_info (locator,
1033                              LOCATOR_WIN,
1034                              2 /* 1 */ ,
1035                              tui_term_width (),
1036                              0,
1037                              src_height - 1);
1038           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1039           init_gen_win_info (&(*win_info_ptr)->generic,
1040                              (*win_info_ptr)->generic.type,
1041                              src_height - 1,
1042                              (*win_info_ptr)->generic.width,
1043                              (*win_info_ptr)->detail.source_info.execution_info->width,
1044                              0);
1045           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1046                              EXEC_INFO_WIN,
1047                              src_height - 1,
1048                              3,
1049                              0,
1050                              0);
1051           (*win_info_ptr)->can_highlight = TRUE;
1052           tui_make_visible (&(*win_info_ptr)->generic);
1053           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1054         }
1055       if ((*win_info_ptr) != NULL)
1056         {
1057           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1058           tui_make_visible (locator);
1059           tui_show_locator_content ();
1060           tui_show_source_content (*win_info_ptr);
1061
1062           if (TUI_CMD_WIN == NULL)
1063             {
1064               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1065               tui_refresh_win (&TUI_CMD_WIN->generic);
1066             }
1067           else
1068             {
1069               init_gen_win_info (&TUI_CMD_WIN->generic,
1070                                  TUI_CMD_WIN->generic.type,
1071                                  TUI_CMD_WIN->generic.height,
1072                                  TUI_CMD_WIN->generic.width,
1073                                  TUI_CMD_WIN->generic.origin.x,
1074                                  TUI_CMD_WIN->generic.origin.y);
1075               TUI_CMD_WIN->can_highlight = FALSE;
1076               tui_make_visible (&TUI_CMD_WIN->generic);
1077             }
1078         }
1079       tui_set_current_layout_to (layout_type);
1080     }
1081 }