gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright (C) 1998-2004, 2007-2012 Free Software Foundation, Inc.
   4
   5    Contributed by Hewlett-Packard Company.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #include "defs.h"
  23 #include "arch-utils.h"
  24 #include "command.h"
  25 #include "symtab.h"
  26 #include "frame.h"
  27 #include "source.h"
  28 #include <ctype.h>
  29
  30 #include "tui/tui.h"
  31 #include "tui/tui-data.h"
  32 #include "tui/tui-windata.h"
  33 #include "tui/tui-wingeneral.h"
  34 #include "tui/tui-stack.h"
  35 #include "tui/tui-regs.h"
  36 #include "tui/tui-win.h"
  37 #include "tui/tui-winsource.h"
  38 #include "tui/tui-disasm.h"
  39 #include "tui/tui-layout.h"
  40
  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 void extract_display_start_addr (struct gdbarch **, CORE_ADDR *);
  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       struct gdbarch *gdbarch;
 147       CORE_ADDR addr;
 148       struct tui_win_info *win_with_focus = tui_win_with_focus ();
 149       struct tui_layout_def *layout_def = tui_layout_def ();
 150
 151       extract_display_start_addr (&gdbarch, &addr);
 152
 153       if (layout_type == UNDEFINED_LAYOUT
 154           && regs_display_type != TUI_UNDEFINED_REGS)
 155         {
 156           if (cur_layout == SRC_DISASSEM_COMMAND)
 157             new_layout = DISASSEM_DATA_COMMAND;
 158           else if (cur_layout == SRC_COMMAND
 159                    || cur_layout == SRC_DATA_COMMAND)
 160             new_layout = SRC_DATA_COMMAND;
 161           else if (cur_layout == DISASSEM_COMMAND
 162                    || cur_layout == DISASSEM_DATA_COMMAND)
 163             new_layout = DISASSEM_DATA_COMMAND;
 164         }
 165       else
 166         new_layout = layout_type;
 167
 168       regs_populate = (new_layout == SRC_DATA_COMMAND
 169                        || new_layout == DISASSEM_DATA_COMMAND
 170                        || regs_display_type != TUI_UNDEFINED_REGS);
 171       if (new_layout != cur_layout
 172           || regs_display_type != TUI_UNDEFINED_REGS)
 173         {
 174           if (new_layout != cur_layout)
 175             {
 176               show_layout (new_layout);
 177
 178               /* Now determine where focus should be.  */
 179               if (win_with_focus != TUI_CMD_WIN)
 180                 {
 181                   switch (new_layout)
 182                     {
 183                     case SRC_COMMAND:
 184                       tui_set_win_focus_to (TUI_SRC_WIN);
 185                       layout_def->display_mode = SRC_WIN;
 186                       layout_def->split = FALSE;
 187                       break;
 188                     case DISASSEM_COMMAND:
 189                       /* The previous layout was not showing code.
 190                          This can happen if there is no source
 191                          available:
 192
 193                          1. if the source file is in another dir OR
 194                          2. if target was compiled without -g
 195                          We still want to show the assembly though!  */
 196
 197                       tui_get_begin_asm_address (&gdbarch, &addr);
 198                       tui_set_win_focus_to (TUI_DISASM_WIN);
 199                       layout_def->display_mode = DISASSEM_WIN;
 200                       layout_def->split = FALSE;
 201                       break;
 202                     case SRC_DISASSEM_COMMAND:
 203                       /* The previous layout was not showing code.
 204                          This can happen if there is no source
 205                          available:
 206
 207                          1. if the source file is in another dir OR
 208                          2. if target was compiled without -g
 209                          We still want to show the assembly though!  */
 210
 211                       tui_get_begin_asm_address (&gdbarch, &addr);
 212                       if (win_with_focus == TUI_SRC_WIN)
 213                         tui_set_win_focus_to (TUI_SRC_WIN);
 214                       else
 215                         tui_set_win_focus_to (TUI_DISASM_WIN);
 216                       layout_def->split = TRUE;
 217                       break;
 218                     case SRC_DATA_COMMAND:
 219                       if (win_with_focus != TUI_DATA_WIN)
 220                         tui_set_win_focus_to (TUI_SRC_WIN);
 221                       else
 222                         tui_set_win_focus_to (TUI_DATA_WIN);
 223                       layout_def->display_mode = SRC_WIN;
 224                       layout_def->split = FALSE;
 225                       break;
 226                     case DISASSEM_DATA_COMMAND:
 227                       /* The previous layout was not showing code.
 228                          This can happen if there is no source
 229                          available:
 230
 231                          1. if the source file is in another dir OR
 232                          2. if target was compiled without -g
 233                          We still want to show the assembly though!  */
 234
 235                       tui_get_begin_asm_address (&gdbarch, &addr);
 236                       if (win_with_focus != TUI_DATA_WIN)
 237                         tui_set_win_focus_to (TUI_DISASM_WIN);
 238                       else
 239                         tui_set_win_focus_to (TUI_DATA_WIN);
 240                       layout_def->display_mode = DISASSEM_WIN;
 241                       layout_def->split = FALSE;
 242                       break;
 243                     default:
 244                       break;
 245                     }
 246                 }
 247               /*
 248                * Now update the window content.
 249                */
 250               if (!regs_populate
 251                   && (new_layout == SRC_DATA_COMMAND
 252                       || new_layout == DISASSEM_DATA_COMMAND))
 253                 tui_display_all_data ();
 254
 255               tui_update_source_windows_with_addr (gdbarch, addr);
 256             }
 257           if (regs_populate)
 258             {
 259               tui_show_registers (TUI_DATA_WIN->detail.data_display_info.current_group);
 260             }
 261         }
 262     }
 263   else
 264     status = TUI_FAILURE;
 265
 266   return status;
 267 }
 268
 269 /* Add the specified window to the layout in a logical way.  This
 270    means setting up the most logical layout given the window to be
 271    added.  */
 272 void
 273 tui_add_win_to_layout (enum tui_win_type type)
 274 {
 275   enum tui_layout_type cur_layout = tui_current_layout ();
 276
 277   switch (type)
 278     {
 279     case SRC_WIN:
 280       if (cur_layout != SRC_COMMAND
 281           && cur_layout != SRC_DISASSEM_COMMAND
 282           && cur_layout != SRC_DATA_COMMAND)
 283         {
 284           tui_clear_source_windows_detail ();
 285           if (cur_layout == DISASSEM_DATA_COMMAND)
 286             show_layout (SRC_DATA_COMMAND);
 287           else
 288             show_layout (SRC_COMMAND);
 289         }
 290       break;
 291     case DISASSEM_WIN:
 292       if (cur_layout != DISASSEM_COMMAND
 293           && cur_layout != SRC_DISASSEM_COMMAND
 294           && cur_layout != DISASSEM_DATA_COMMAND)
 295         {
 296           tui_clear_source_windows_detail ();
 297           if (cur_layout == SRC_DATA_COMMAND)
 298             show_layout (DISASSEM_DATA_COMMAND);
 299           else
 300             show_layout (DISASSEM_COMMAND);
 301         }
 302       break;
 303     case DATA_WIN:
 304       if (cur_layout != SRC_DATA_COMMAND
 305           && cur_layout != DISASSEM_DATA_COMMAND)
 306         {
 307           if (cur_layout == DISASSEM_COMMAND)
 308             show_layout (DISASSEM_DATA_COMMAND);
 309           else
 310             show_layout (SRC_DATA_COMMAND);
 311         }
 312       break;
 313     default:
 314       break;
 315     }
 316 }
 317
 318
 319 /* Answer the height of a window.  If it hasn't been created yet,
 320    answer what the height of a window would be based upon its type and
 321    the layout.  */
 322 int
 323 tui_default_win_height (enum tui_win_type type,
 324                         enum tui_layout_type layout)
 325 {
 326   int h;
 327
 328   if (tui_win_list[type] != (struct tui_win_info *) NULL)
 329     h = tui_win_list[type]->generic.height;
 330   else
 331     {
 332       switch (layout)
 333         {
 334         case SRC_COMMAND:
 335         case DISASSEM_COMMAND:
 336           if (TUI_CMD_WIN == NULL)
 337             h = tui_term_height () / 2;
 338           else
 339             h = tui_term_height () - TUI_CMD_WIN->generic.height;
 340           break;
 341         case SRC_DISASSEM_COMMAND:
 342         case SRC_DATA_COMMAND:
 343         case DISASSEM_DATA_COMMAND:
 344           if (TUI_CMD_WIN == NULL)
 345             h = tui_term_height () / 3;
 346           else
 347             h = (tui_term_height () - TUI_CMD_WIN->generic.height) / 2;
 348           break;
 349         default:
 350           h = 0;
 351           break;
 352         }
 353     }
 354
 355   return h;
 356 }
 357
 358
 359 /* Answer the height of a window.  If it hasn't been created yet,
 360    answer what the height of a window would be based upon its type and
 361    the layout.  */
 362 int
 363 tui_default_win_viewport_height (enum tui_win_type type,
 364                                  enum tui_layout_type layout)
 365 {
 366   int h;
 367
 368   h = tui_default_win_height (type, layout);
 369
 370   if (tui_win_list[type] == TUI_CMD_WIN)
 371     h -= 1;
 372   else
 373     h -= 2;
 374
 375   return h;
 376 }
 377
 378
 379 /* Function to initialize gdb commands, for tui window layout
 380    manipulation.  */
 381
 382 /* Provide a prototype to silence -Wmissing-prototypes.  */
 383 extern initialize_file_ftype _initialize_tui_layout;
 384
 385 void
 386 _initialize_tui_layout (void)
 387 {
 388   add_com ("layout", class_tui, tui_layout_command, _("\
 389 Change the layout of windows.\n\
 390 Usage: layout prev | next | <layout_name> \n\
 391 Layout names are:\n\
 392    src   : Displays source and command windows.\n\
 393    asm   : Displays disassembly and command windows.\n\
 394    split : Displays source, disassembly and command windows.\n\
 395    regs  : Displays register window. If existing layout\n\
 396            is source/command or assembly/command, the \n\
 397            register window is displayed. If the\n\
 398            source/assembly/command (split) is displayed, \n\
 399            the register window is displayed with \n\
 400            the window that has current logical focus.\n"));
 401   if (xdb_commands)
 402     {
 403       add_com ("td", class_tui, tui_toggle_layout_command, _("\
 404 Toggle between Source/Command and Disassembly/Command layouts.\n"));
 405       add_com ("ts", class_tui, tui_toggle_split_layout_command, _("\
 406 Toggle between Source/Command or Disassembly/Command and \n\
 407 Source/Disassembly/Command layouts.\n"));
 408     }
 409 }
 410
 411
 412 /*************************
 413 ** STATIC LOCAL FUNCTIONS
 414 **************************/
 415
 416
 417 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA,
 418    REGS, $REGS, $GREGS, $FREGS, $SREGS.  */
 419 enum tui_status
 420 tui_set_layout_for_display_command (const char *layout_name)
 421 {
 422   enum tui_status status = TUI_SUCCESS;
 423
 424   if (layout_name != (char *) NULL)
 425     {
 426       int i;
 427       char *buf_ptr;
 428       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 429       enum tui_register_display_type dpy_type = TUI_UNDEFINED_REGS;
 430       enum tui_layout_type cur_layout = tui_current_layout ();
 431
 432       buf_ptr = (char *) xstrdup (layout_name);
 433       for (i = 0; (i < strlen (layout_name)); i++)
 434         buf_ptr[i] = toupper (buf_ptr[i]);
 435
 436       /* First check for ambiguous input.  */
 437       if (strlen (buf_ptr) <= 1
 438           && (*buf_ptr == 'S' || *buf_ptr == '$'))
 439         {
 440           warning (_("Ambiguous command input."));
 441           status = TUI_FAILURE;
 442         }
 443       else
 444         {
 445           if (subset_compare (buf_ptr, "SRC"))
 446             new_layout = SRC_COMMAND;
 447           else if (subset_compare (buf_ptr, "ASM"))
 448             new_layout = DISASSEM_COMMAND;
 449           else if (subset_compare (buf_ptr, "SPLIT"))
 450             new_layout = SRC_DISASSEM_COMMAND;
 451           else if (subset_compare (buf_ptr, "REGS")
 452                    || subset_compare (buf_ptr, TUI_GENERAL_SPECIAL_REGS_NAME)
 453                    || subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME)
 454                    || subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME)
 455                    || subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 456             {
 457               if (cur_layout == SRC_COMMAND
 458                   || cur_layout == SRC_DATA_COMMAND)
 459                 new_layout = SRC_DATA_COMMAND;
 460               else
 461                 new_layout = DISASSEM_DATA_COMMAND;
 462
 463               /* Could ifdef out the following code. when compile with
 464                  -z, there are null pointer references that cause a
 465                  core dump if 'layout regs' is the first layout
 466                  command issued by the user. HP has asked us to hook
 467                  up this code.  - edie epstein  */
 468               if (subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME))
 469                 {
 470                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type
 471                       != TUI_SFLOAT_REGS
 472                       && TUI_DATA_WIN->detail.data_display_info.regs_display_type
 473                       != TUI_DFLOAT_REGS)
 474                     dpy_type = TUI_SFLOAT_REGS;
 475                   else
 476                     dpy_type =
 477                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 478                 }
 479               else if (subset_compare (buf_ptr,
 480                                       TUI_GENERAL_SPECIAL_REGS_NAME))
 481                 dpy_type = TUI_GENERAL_AND_SPECIAL_REGS;
 482               else if (subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME))
 483                 dpy_type = TUI_GENERAL_REGS;
 484               else if (subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 485                 dpy_type = TUI_SPECIAL_REGS;
 486               else if (TUI_DATA_WIN)
 487                 {
 488                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type
 489                       != TUI_UNDEFINED_REGS)
 490                     dpy_type
 491                       = TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 492                   else
 493                     dpy_type = TUI_GENERAL_REGS;
 494                 }
 495
 496               /* End of potential ifdef.
 497                */
 498
 499               /* If ifdefed out code above, then assume that the user
 500                  wishes to display the general purpose registers .
 501               */
 502
 503               /* dpy_type = TUI_GENERAL_REGS; */
 504             }
 505           else if (subset_compare (buf_ptr, "NEXT"))
 506             new_layout = next_layout ();
 507           else if (subset_compare (buf_ptr, "PREV"))
 508             new_layout = prev_layout ();
 509           else
 510             status = TUI_FAILURE;
 511
 512           tui_set_layout (new_layout, dpy_type);
 513         }
 514       xfree (buf_ptr);
 515     }
 516   else
 517     status = TUI_FAILURE;
 518
 519   return status;
 520 }
 521
 522
 523 static void
 524 extract_display_start_addr (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
 525 {
 526   enum tui_layout_type cur_layout = tui_current_layout ();
 527   struct gdbarch *gdbarch = get_current_arch ();
 528   CORE_ADDR addr;
 529   CORE_ADDR pc;
 530   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 531
 532   switch (cur_layout)
 533     {
 534     case SRC_COMMAND:
 535     case SRC_DATA_COMMAND:
 536       gdbarch = TUI_SRC_WIN->detail.source_info.gdbarch;
 537       find_line_pc (cursal.symtab,
 538                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 539                     &pc);
 540       addr = pc;
 541       break;
 542     case DISASSEM_COMMAND:
 543     case SRC_DISASSEM_COMMAND:
 544     case DISASSEM_DATA_COMMAND:
 545       gdbarch = TUI_DISASM_WIN->detail.source_info.gdbarch;
 546       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 547       break;
 548     default:
 549       addr = 0;
 550       break;
 551     }
 552
 553   *gdbarch_p = gdbarch;
 554   *addr_p = addr;
 555 }
 556
 557
 558 static void
 559 tui_handle_xdb_layout (struct tui_layout_def *layout_def)
 560 {
 561   if (layout_def->split)
 562     {
 563       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
 564       tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
 565     }
 566   else
 567     {
 568       if (layout_def->display_mode == SRC_WIN)
 569         tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
 570       else
 571         tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
 572     }
 573 }
 574
 575
 576 static void
 577 tui_toggle_layout_command (char *arg, int from_tty)
 578 {
 579   struct tui_layout_def *layout_def = tui_layout_def ();
 580
 581   /* Make sure the curses mode is enabled.  */
 582   tui_enable ();
 583   if (layout_def->display_mode == SRC_WIN)
 584     layout_def->display_mode = DISASSEM_WIN;
 585   else
 586     layout_def->display_mode = SRC_WIN;
 587
 588   if (!layout_def->split)
 589     tui_handle_xdb_layout (layout_def);
 590 }
 591
 592
 593 static void
 594 tui_toggle_split_layout_command (char *arg, int from_tty)
 595 {
 596   struct tui_layout_def *layout_def = tui_layout_def ();
 597
 598   /* Make sure the curses mode is enabled.  */
 599   tui_enable ();
 600   layout_def->split = (!layout_def->split);
 601   tui_handle_xdb_layout (layout_def);
 602 }
 603
 604
 605 static void
 606 tui_layout_command (char *arg, int from_tty)
 607 {
 608   /* Make sure the curses mode is enabled.  */
 609   tui_enable ();
 610
 611   /* Switch to the selected layout.  */
 612   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
 613     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 614
 615 }
 616
 617 /* Answer the previous layout to cycle to.  */
 618 static enum tui_layout_type
 619 next_layout (void)
 620 {
 621   enum tui_layout_type new_layout;
 622
 623   new_layout = tui_current_layout ();
 624   if (new_layout == UNDEFINED_LAYOUT)
 625     new_layout = SRC_COMMAND;
 626   else
 627     {
 628       new_layout++;
 629       if (new_layout == UNDEFINED_LAYOUT)
 630         new_layout = SRC_COMMAND;
 631     }
 632
 633   return new_layout;
 634 }
 635
 636
 637 /* Answer the next layout to cycle to.  */
 638 static enum tui_layout_type
 639 prev_layout (void)
 640 {
 641   enum tui_layout_type new_layout;
 642
 643   new_layout = tui_current_layout ();
 644   if (new_layout == SRC_COMMAND)
 645     new_layout = DISASSEM_DATA_COMMAND;
 646   else
 647     {
 648       new_layout--;
 649       if (new_layout == UNDEFINED_LAYOUT)
 650         new_layout = DISASSEM_DATA_COMMAND;
 651     }
 652
 653   return new_layout;
 654 }
 655
 656
 657
 658 static void
 659 make_command_window (struct tui_win_info **win_info_ptr,
 660                      int height, int origin_y)
 661 {
 662   *win_info_ptr = init_and_make_win (*win_info_ptr,
 663                                      CMD_WIN,
 664                                      height,
 665                                      tui_term_width (),
 666                                      0,
 667                                      origin_y,
 668                                      DONT_BOX_WINDOW);
 669
 670   (*win_info_ptr)->can_highlight = FALSE;
 671 }
 672
 673
 674 /* make_source_window().
 675  */
 676 static void
 677 make_source_window (struct tui_win_info **win_info_ptr,
 678                     int height, int origin_y)
 679 {
 680   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 681
 682   return;
 683 }                               /* make_source_window */
 684
 685
 686 /* make_disasm_window().
 687  */
 688 static void
 689 make_disasm_window (struct tui_win_info **win_info_ptr,
 690                     int height, int origin_y)
 691 {
 692   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 693
 694   return;
 695 }                               /* make_disasm_window */
 696
 697
 698 static void
 699 make_data_window (struct tui_win_info **win_info_ptr,
 700                   int height, int origin_y)
 701 {
 702   *win_info_ptr = init_and_make_win (*win_info_ptr,
 703                                      DATA_WIN,
 704                                      height,
 705                                      tui_term_width (),
 706                                      0,
 707                                      origin_y,
 708                                      BOX_WINDOW);
 709 }
 710
 711
 712
 713 /* Show the Source/Command layout.  */
 714 static void
 715 show_source_command (void)
 716 {
 717   show_source_or_disasm_and_command (SRC_COMMAND);
 718 }
 719
 720
 721 /* Show the Dissassem/Command layout.  */
 722 static void
 723 show_disasm_command (void)
 724 {
 725   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 726 }
 727
 728
 729 /* Show the Source/Disassem/Command layout.  */
 730 static void
 731 show_source_disasm_command (void)
 732 {
 733   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 734     {
 735       int cmd_height, src_height, asm_height;
 736
 737       if (TUI_CMD_WIN != NULL)
 738         cmd_height = TUI_CMD_WIN->generic.height;
 739       else
 740         cmd_height = tui_term_height () / 3;
 741
 742       src_height = (tui_term_height () - cmd_height) / 2;
 743       asm_height = tui_term_height () - (src_height + cmd_height);
 744
 745       if (TUI_SRC_WIN == NULL)
 746         make_source_window (&TUI_SRC_WIN, src_height, 0);
 747       else
 748         {
 749           init_gen_win_info (&TUI_SRC_WIN->generic,
 750                              TUI_SRC_WIN->generic.type,
 751                              src_height,
 752                              TUI_SRC_WIN->generic.width,
 753                              TUI_SRC_WIN->detail.source_info.execution_info->width,
 754                              0);
 755           TUI_SRC_WIN->can_highlight = TRUE;
 756           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 757                              EXEC_INFO_WIN,
 758                              src_height,
 759                              3,
 760                              0,
 761                              0);
 762           tui_make_visible (&TUI_SRC_WIN->generic);
 763           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 764           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 765         }
 766       if (TUI_SRC_WIN != NULL)
 767         {
 768           struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 769
 770           tui_show_source_content (TUI_SRC_WIN);
 771           if (TUI_DISASM_WIN == NULL)
 772             {
 773               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 774               locator = init_and_make_win (locator,
 775                                            LOCATOR_WIN,
 776                                            2 /* 1 */ ,
 777                                            tui_term_width (),
 778                                            0,
 779                                            (src_height + asm_height) - 1,
 780                                            DONT_BOX_WINDOW);
 781             }
 782           else
 783             {
 784               init_gen_win_info (locator,
 785                                  LOCATOR_WIN,
 786                                  2 /* 1 */ ,
 787                                  tui_term_width (),
 788                                  0,
 789                                  (src_height + asm_height) - 1);
 790               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 791               init_gen_win_info (&TUI_DISASM_WIN->generic,
 792                                  TUI_DISASM_WIN->generic.type,
 793                                  asm_height,
 794                                  TUI_DISASM_WIN->generic.width,
 795                                  TUI_DISASM_WIN->detail.source_info.execution_info->width,
 796                                  src_height - 1);
 797               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 798                                  EXEC_INFO_WIN,
 799                                  asm_height,
 800                                  3,
 801                                  0,
 802                                  src_height - 1);
 803               TUI_DISASM_WIN->can_highlight = TRUE;
 804               tui_make_visible (&TUI_DISASM_WIN->generic);
 805               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 806             }
 807           if (TUI_DISASM_WIN != NULL)
 808             {
 809               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 810               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 811               tui_make_visible (locator);
 812               tui_show_locator_content ();
 813               tui_show_source_content (TUI_DISASM_WIN);
 814
 815               if (TUI_CMD_WIN == NULL)
 816                 make_command_window (&TUI_CMD_WIN,
 817                                      cmd_height,
 818                                      tui_term_height () - cmd_height);
 819               else
 820                 {
 821                   init_gen_win_info (&TUI_CMD_WIN->generic,
 822                                      TUI_CMD_WIN->generic.type,
 823                                      TUI_CMD_WIN->generic.height,
 824                                      TUI_CMD_WIN->generic.width,
 825                                      0,
 826                                      TUI_CMD_WIN->generic.origin.y);
 827                   TUI_CMD_WIN->can_highlight = FALSE;
 828                   tui_make_visible (&TUI_CMD_WIN->generic);
 829                 }
 830               if (TUI_CMD_WIN != NULL)
 831                 tui_refresh_win (&TUI_CMD_WIN->generic);
 832             }
 833         }
 834       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 835     }
 836 }
 837
 838
 839 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 840    layout.  */
 841 static void
 842 show_data (enum tui_layout_type new_layout)
 843 {
 844   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 845   int src_height, data_height;
 846   enum tui_win_type win_type;
 847   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 848
 849
 850   data_height = total_height / 2;
 851   src_height = total_height - data_height;
 852   tui_make_all_invisible ();
 853   tui_make_invisible (locator);
 854   make_data_window (&TUI_DATA_WIN, data_height, 0);
 855   TUI_DATA_WIN->can_highlight = TRUE;
 856   if (new_layout == SRC_DATA_COMMAND)
 857     win_type = SRC_WIN;
 858   else
 859     win_type = DISASSEM_WIN;
 860   if (tui_win_list[win_type] == NULL)
 861     {
 862       if (win_type == SRC_WIN)
 863         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 864       else
 865         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 866       locator = init_and_make_win (locator,
 867                                    LOCATOR_WIN,
 868                                    2 /* 1 */ ,
 869                                    tui_term_width (),
 870                                    0,
 871                                    total_height - 1,
 872                                    DONT_BOX_WINDOW);
 873     }
 874   else
 875     {
 876       init_gen_win_info (&tui_win_list[win_type]->generic,
 877                          tui_win_list[win_type]->generic.type,
 878                          src_height,
 879                          tui_win_list[win_type]->generic.width,
 880                          tui_win_list[win_type]->detail.source_info.execution_info->width,
 881                          data_height - 1);
 882       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 883                          EXEC_INFO_WIN,
 884                          src_height,
 885                          3,
 886                          0,
 887                          data_height - 1);
 888       tui_make_visible (&tui_win_list[win_type]->generic);
 889       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 890       init_gen_win_info (locator,
 891                          LOCATOR_WIN,
 892                          2 /* 1 */ ,
 893                          tui_term_width (),
 894                          0,
 895                          total_height - 1);
 896     }
 897   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 898   tui_make_visible (locator);
 899   tui_show_locator_content ();
 900   tui_add_to_source_windows (tui_win_list[win_type]);
 901   tui_set_current_layout_to (new_layout);
 902 }
 903
 904 /* init_gen_win_info().
 905  */
 906 static void
 907 init_gen_win_info (struct tui_gen_win_info *win_info,
 908                    enum tui_win_type type,
 909                    int height, int width,
 910                    int origin_x, int origin_y)
 911 {
 912   int h = height;
 913
 914   win_info->type = type;
 915   win_info->width = width;
 916   win_info->height = h;
 917   if (h > 1)
 918     {
 919       win_info->viewport_height = h - 1;
 920       if (win_info->type != CMD_WIN)
 921         win_info->viewport_height--;
 922     }
 923   else
 924     win_info->viewport_height = 1;
 925   win_info->origin.x = origin_x;
 926   win_info->origin.y = origin_y;
 927
 928   return;
 929 }                               /* init_gen_win_info */
 930
 931 /* init_and_make_win().
 932  */
 933 static void *
 934 init_and_make_win (void *opaque_win_info,
 935                    enum tui_win_type win_type,
 936                    int height, int width,
 937                    int origin_x, int origin_y,
 938                    int box_it)
 939 {
 940   struct tui_gen_win_info *generic;
 941
 942   if (opaque_win_info == NULL)
 943     {
 944       if (tui_win_is_auxillary (win_type))
 945         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 946       else
 947         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 948     }
 949   if (tui_win_is_auxillary (win_type))
 950     generic = (struct tui_gen_win_info *) opaque_win_info;
 951   else
 952     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 953
 954   if (opaque_win_info != NULL)
 955     {
 956       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 957       if (!tui_win_is_auxillary (win_type))
 958         {
 959           if (generic->type == CMD_WIN)
 960             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 961           else
 962             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 963         }
 964       tui_make_window (generic, box_it);
 965     }
 966   return opaque_win_info;
 967 }
 968
 969
 970 static void
 971 make_source_or_disasm_window (struct tui_win_info **win_info_ptr,
 972                               enum tui_win_type type,
 973                               int height, int origin_y)
 974 {
 975   struct tui_gen_win_info *execution_info = (struct tui_gen_win_info *) NULL;
 976
 977   /* Create the exeuction info window.  */
 978   if (type == SRC_WIN)
 979     execution_info = tui_source_exec_info_win_ptr ();
 980   else
 981     execution_info = tui_disassem_exec_info_win_ptr ();
 982   execution_info = init_and_make_win (execution_info,
 983                                       EXEC_INFO_WIN,
 984                                       height,
 985                                       3,
 986                                       0,
 987                                       origin_y,
 988                                       DONT_BOX_WINDOW);
 989
 990   /* Now create the source window.  */
 991   *win_info_ptr = init_and_make_win (*win_info_ptr,
 992                                      type,
 993                                      height,
 994                                      tui_term_width () - execution_info->width,
 995                                      execution_info->width,
 996                                      origin_y,
 997                                      BOX_WINDOW);
 998
 999   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
1000 }
1001
1002
1003 /* Show the Source/Command or the Disassem layout.  */
1004 static void
1005 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
1006 {
1007   if (tui_current_layout () != layout_type)
1008     {
1009       struct tui_win_info **win_info_ptr;
1010       int src_height, cmd_height;
1011       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
1012
1013       if (TUI_CMD_WIN != NULL)
1014         cmd_height = TUI_CMD_WIN->generic.height;
1015       else
1016         cmd_height = tui_term_height () / 3;
1017       src_height = tui_term_height () - cmd_height;
1018
1019       if (layout_type == SRC_COMMAND)
1020         win_info_ptr = &TUI_SRC_WIN;
1021       else
1022         win_info_ptr = &TUI_DISASM_WIN;
1023
1024       if ((*win_info_ptr) == NULL)
1025         {
1026           if (layout_type == SRC_COMMAND)
1027             make_source_window (win_info_ptr, src_height - 1, 0);
1028           else
1029             make_disasm_window (win_info_ptr, src_height - 1, 0);
1030           locator = init_and_make_win (locator,
1031                                        LOCATOR_WIN,
1032                                        2 /* 1 */ ,
1033                                        tui_term_width (),
1034                                        0,
1035                                        src_height - 1,
1036                                        DONT_BOX_WINDOW);
1037         }
1038       else
1039         {
1040           init_gen_win_info (locator,
1041                              LOCATOR_WIN,
1042                              2 /* 1 */ ,
1043                              tui_term_width (),
1044                              0,
1045                              src_height - 1);
1046           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1047           init_gen_win_info (&(*win_info_ptr)->generic,
1048                              (*win_info_ptr)->generic.type,
1049                              src_height - 1,
1050                              (*win_info_ptr)->generic.width,
1051                              (*win_info_ptr)->detail.source_info.execution_info->width,
1052                              0);
1053           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1054                              EXEC_INFO_WIN,
1055                              src_height - 1,
1056                              3,
1057                              0,
1058                              0);
1059           (*win_info_ptr)->can_highlight = TRUE;
1060           tui_make_visible (&(*win_info_ptr)->generic);
1061           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1062         }
1063       if ((*win_info_ptr) != NULL)
1064         {
1065           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1066           tui_make_visible (locator);
1067           tui_show_locator_content ();
1068           tui_show_source_content (*win_info_ptr);
1069
1070           if (TUI_CMD_WIN == NULL)
1071             {
1072               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1073               tui_refresh_win (&TUI_CMD_WIN->generic);
1074             }
1075           else
1076             {
1077               init_gen_win_info (&TUI_CMD_WIN->generic,
1078                                  TUI_CMD_WIN->generic.type,
1079                                  TUI_CMD_WIN->generic.height,
1080                                  TUI_CMD_WIN->generic.width,
1081                                  TUI_CMD_WIN->generic.origin.x,
1082                                  TUI_CMD_WIN->generic.origin.y);
1083               TUI_CMD_WIN->can_highlight = FALSE;
1084               tui_make_visible (&TUI_CMD_WIN->generic);
1085             }
1086         }
1087       tui_set_current_layout_to (layout_type);
1088     }
1089 }