gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright (C) 1998-2015 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 #include "gdb_curses.h"
  41
  42 /*******************************
  43 ** Static Local Decls
  44 ********************************/
  45 static void show_layout (enum tui_layout_type);
  46 static void init_gen_win_info (struct tui_gen_win_info *,
  47                                enum tui_win_type,
  48                                int, int, int, int);
  49 static void *init_and_make_win (void *, enum tui_win_type,
  50                                 int, int, int, int, int);
  51 static void show_source_or_disasm_and_command (enum tui_layout_type);
  52 static void make_source_or_disasm_window (struct tui_win_info **,
  53                                           enum tui_win_type,
  54                                           int, int);
  55 static void make_command_window (struct tui_win_info **, int, int);
  56 static void make_source_window (struct tui_win_info **, int, int);
  57 static void make_disasm_window (struct tui_win_info **, int, int);
  58 static void make_data_window (struct tui_win_info **, int, int);
  59 static void show_source_command (void);
  60 static void show_disasm_command (void);
  61 static void show_source_disasm_command (void);
  62 static void show_data (enum tui_layout_type);
  63 static enum tui_layout_type next_layout (void);
  64 static enum tui_layout_type prev_layout (void);
  65 static void tui_layout_command (char *, int);
  66 static void tui_toggle_layout_command (char *, int);
  67 static void tui_toggle_split_layout_command (char *, int);
  68 static void extract_display_start_addr (struct gdbarch **, CORE_ADDR *);
  69 static void tui_handle_xdb_layout (struct tui_layout_def *);
  70
  71
  72 /***************************************
  73 ** DEFINITIONS
  74 ***************************************/
  75
  76 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
  77
  78 /* Show the screen layout defined.  */
  79 static void
  80 show_layout (enum tui_layout_type layout)
  81 {
  82   enum tui_layout_type cur_layout = tui_current_layout ();
  83
  84   if (layout != cur_layout)
  85     {
  86       /* Since the new layout may cause changes in window size, we
  87          should free the content and reallocate on next display of
  88          source/asm.  */
  89       tui_free_all_source_wins_content ();
  90       tui_clear_source_windows ();
  91       if (layout == SRC_DATA_COMMAND
  92           || layout == DISASSEM_DATA_COMMAND)
  93         {
  94           show_data (layout);
  95           tui_refresh_all (tui_win_list);
  96         }
  97       else
  98         {
  99           /* First make the current layout be invisible.  */
 100           tui_make_all_invisible ();
 101           tui_make_invisible (tui_locator_win_info_ptr ());
 102
 103           switch (layout)
 104             {
 105               /* Now show the new layout.  */
 106             case SRC_COMMAND:
 107               show_source_command ();
 108               tui_add_to_source_windows (TUI_SRC_WIN);
 109               break;
 110             case DISASSEM_COMMAND:
 111               show_disasm_command ();
 112               tui_add_to_source_windows (TUI_DISASM_WIN);
 113               break;
 114             case SRC_DISASSEM_COMMAND:
 115               show_source_disasm_command ();
 116               tui_add_to_source_windows (TUI_SRC_WIN);
 117               tui_add_to_source_windows (TUI_DISASM_WIN);
 118               break;
 119             default:
 120               break;
 121             }
 122         }
 123     }
 124 }
 125
 126
 127 /* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
 128    SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.
 129    If the layout is SRC_DATA_COMMAND, DISASSEM_DATA_COMMAND, or
 130    UNDEFINED_LAYOUT, then the data window is populated according to
 131    regs_display_type.  */
 132 enum tui_status
 133 tui_set_layout (enum tui_layout_type layout_type,
 134                 enum tui_register_display_type regs_display_type)
 135 {
 136   enum tui_status status = TUI_SUCCESS;
 137
 138   if (layout_type != UNDEFINED_LAYOUT
 139       || regs_display_type != TUI_UNDEFINED_REGS)
 140     {
 141       enum tui_layout_type cur_layout = tui_current_layout (),
 142         new_layout = UNDEFINED_LAYOUT;
 143       int regs_populate = FALSE;
 144       struct gdbarch *gdbarch;
 145       CORE_ADDR addr;
 146       struct tui_win_info *win_with_focus = tui_win_with_focus ();
 147       struct tui_layout_def *layout_def = tui_layout_def ();
 148
 149       extract_display_start_addr (&gdbarch, &addr);
 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                       tui_get_begin_asm_address (&gdbarch, &addr);
 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                       tui_get_begin_asm_address (&gdbarch, &addr);
 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                       tui_get_begin_asm_address (&gdbarch, &addr);
 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 (gdbarch, 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
 469                       != TUI_SFLOAT_REGS
 470                       && TUI_DATA_WIN->detail.data_display_info.regs_display_type
 471                       != TUI_DFLOAT_REGS)
 472                     dpy_type = TUI_SFLOAT_REGS;
 473                   else
 474                     dpy_type =
 475                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 476                 }
 477               else if (subset_compare (buf_ptr,
 478                                       TUI_GENERAL_SPECIAL_REGS_NAME))
 479                 dpy_type = TUI_GENERAL_AND_SPECIAL_REGS;
 480               else if (subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME))
 481                 dpy_type = TUI_GENERAL_REGS;
 482               else if (subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 483                 dpy_type = TUI_SPECIAL_REGS;
 484               else if (TUI_DATA_WIN)
 485                 {
 486                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type
 487                       != TUI_UNDEFINED_REGS)
 488                     dpy_type
 489                       = TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 490                   else
 491                     dpy_type = TUI_GENERAL_REGS;
 492                 }
 493
 494               /* End of potential ifdef.
 495                */
 496
 497               /* If ifdefed out code above, then assume that the user
 498                  wishes to display the general purpose registers .
 499               */
 500
 501               /* dpy_type = TUI_GENERAL_REGS; */
 502             }
 503           else if (subset_compare (buf_ptr, "NEXT"))
 504             new_layout = next_layout ();
 505           else if (subset_compare (buf_ptr, "PREV"))
 506             new_layout = prev_layout ();
 507           else
 508             status = TUI_FAILURE;
 509
 510           tui_set_layout (new_layout, dpy_type);
 511         }
 512       xfree (buf_ptr);
 513     }
 514   else
 515     status = TUI_FAILURE;
 516
 517   return status;
 518 }
 519
 520
 521 static void
 522 extract_display_start_addr (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
 523 {
 524   enum tui_layout_type cur_layout = tui_current_layout ();
 525   struct gdbarch *gdbarch = get_current_arch ();
 526   CORE_ADDR addr;
 527   CORE_ADDR pc;
 528   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 529
 530   switch (cur_layout)
 531     {
 532     case SRC_COMMAND:
 533     case SRC_DATA_COMMAND:
 534       gdbarch = TUI_SRC_WIN->detail.source_info.gdbarch;
 535       find_line_pc (cursal.symtab,
 536                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.u.line_no,
 537                     &pc);
 538       addr = pc;
 539       break;
 540     case DISASSEM_COMMAND:
 541     case SRC_DISASSEM_COMMAND:
 542     case DISASSEM_DATA_COMMAND:
 543       gdbarch = TUI_DISASM_WIN->detail.source_info.gdbarch;
 544       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr;
 545       break;
 546     default:
 547       addr = 0;
 548       break;
 549     }
 550
 551   *gdbarch_p = gdbarch;
 552   *addr_p = addr;
 553 }
 554
 555
 556 static void
 557 tui_handle_xdb_layout (struct tui_layout_def *layout_def)
 558 {
 559   if (layout_def->split)
 560     {
 561       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
 562       tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
 563     }
 564   else
 565     {
 566       if (layout_def->display_mode == SRC_WIN)
 567         tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
 568       else
 569         tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
 570     }
 571 }
 572
 573
 574 static void
 575 tui_toggle_layout_command (char *arg, int from_tty)
 576 {
 577   struct tui_layout_def *layout_def = tui_layout_def ();
 578
 579   /* Make sure the curses mode is enabled.  */
 580   tui_enable ();
 581   if (layout_def->display_mode == SRC_WIN)
 582     layout_def->display_mode = DISASSEM_WIN;
 583   else
 584     layout_def->display_mode = SRC_WIN;
 585
 586   if (!layout_def->split)
 587     tui_handle_xdb_layout (layout_def);
 588 }
 589
 590
 591 static void
 592 tui_toggle_split_layout_command (char *arg, int from_tty)
 593 {
 594   struct tui_layout_def *layout_def = tui_layout_def ();
 595
 596   /* Make sure the curses mode is enabled.  */
 597   tui_enable ();
 598   layout_def->split = (!layout_def->split);
 599   tui_handle_xdb_layout (layout_def);
 600 }
 601
 602
 603 static void
 604 tui_layout_command (char *arg, int from_tty)
 605 {
 606   /* Make sure the curses mode is enabled.  */
 607   tui_enable ();
 608
 609   /* Switch to the selected layout.  */
 610   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
 611     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 612
 613 }
 614
 615 /* Answer the previous layout to cycle to.  */
 616 static enum tui_layout_type
 617 next_layout (void)
 618 {
 619   enum tui_layout_type new_layout;
 620
 621   new_layout = tui_current_layout ();
 622   if (new_layout == UNDEFINED_LAYOUT)
 623     new_layout = SRC_COMMAND;
 624   else
 625     {
 626       new_layout++;
 627       if (new_layout == UNDEFINED_LAYOUT)
 628         new_layout = SRC_COMMAND;
 629     }
 630
 631   return new_layout;
 632 }
 633
 634
 635 /* Answer the next layout to cycle to.  */
 636 static enum tui_layout_type
 637 prev_layout (void)
 638 {
 639   enum tui_layout_type new_layout;
 640
 641   new_layout = tui_current_layout ();
 642   if (new_layout == SRC_COMMAND)
 643     new_layout = DISASSEM_DATA_COMMAND;
 644   else
 645     {
 646       new_layout--;
 647       if (new_layout == UNDEFINED_LAYOUT)
 648         new_layout = DISASSEM_DATA_COMMAND;
 649     }
 650
 651   return new_layout;
 652 }
 653
 654
 655
 656 static void
 657 make_command_window (struct tui_win_info **win_info_ptr,
 658                      int height, int origin_y)
 659 {
 660   *win_info_ptr = init_and_make_win (*win_info_ptr,
 661                                      CMD_WIN,
 662                                      height,
 663                                      tui_term_width (),
 664                                      0,
 665                                      origin_y,
 666                                      DONT_BOX_WINDOW);
 667
 668   (*win_info_ptr)->can_highlight = FALSE;
 669 }
 670
 671
 672 /* make_source_window().
 673  */
 674 static void
 675 make_source_window (struct tui_win_info **win_info_ptr,
 676                     int height, int origin_y)
 677 {
 678   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 679
 680   return;
 681 }                               /* make_source_window */
 682
 683
 684 /* make_disasm_window().
 685  */
 686 static void
 687 make_disasm_window (struct tui_win_info **win_info_ptr,
 688                     int height, int origin_y)
 689 {
 690   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 691
 692   return;
 693 }                               /* make_disasm_window */
 694
 695
 696 static void
 697 make_data_window (struct tui_win_info **win_info_ptr,
 698                   int height, int origin_y)
 699 {
 700   *win_info_ptr = init_and_make_win (*win_info_ptr,
 701                                      DATA_WIN,
 702                                      height,
 703                                      tui_term_width (),
 704                                      0,
 705                                      origin_y,
 706                                      BOX_WINDOW);
 707 }
 708
 709
 710
 711 /* Show the Source/Command layout.  */
 712 static void
 713 show_source_command (void)
 714 {
 715   show_source_or_disasm_and_command (SRC_COMMAND);
 716 }
 717
 718
 719 /* Show the Dissassem/Command layout.  */
 720 static void
 721 show_disasm_command (void)
 722 {
 723   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 724 }
 725
 726
 727 /* Show the Source/Disassem/Command layout.  */
 728 static void
 729 show_source_disasm_command (void)
 730 {
 731   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 732     {
 733       int cmd_height, src_height, asm_height;
 734
 735       if (TUI_CMD_WIN != NULL)
 736         cmd_height = TUI_CMD_WIN->generic.height;
 737       else
 738         cmd_height = tui_term_height () / 3;
 739
 740       src_height = (tui_term_height () - cmd_height) / 2;
 741       asm_height = tui_term_height () - (src_height + cmd_height);
 742
 743       if (TUI_SRC_WIN == NULL)
 744         make_source_window (&TUI_SRC_WIN, src_height, 0);
 745       else
 746         {
 747           init_gen_win_info (&TUI_SRC_WIN->generic,
 748                              TUI_SRC_WIN->generic.type,
 749                              src_height,
 750                              TUI_SRC_WIN->generic.width,
 751                              TUI_SRC_WIN->detail.source_info.execution_info->width,
 752                              0);
 753           TUI_SRC_WIN->can_highlight = TRUE;
 754           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 755                              EXEC_INFO_WIN,
 756                              src_height,
 757                              3,
 758                              0,
 759                              0);
 760           tui_make_visible (&TUI_SRC_WIN->generic);
 761           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 762           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 763         }
 764       if (TUI_SRC_WIN != NULL)
 765         {
 766           struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 767
 768           tui_show_source_content (TUI_SRC_WIN);
 769           if (TUI_DISASM_WIN == NULL)
 770             {
 771               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 772               locator = init_and_make_win (locator,
 773                                            LOCATOR_WIN,
 774                                            2 /* 1 */ ,
 775                                            tui_term_width (),
 776                                            0,
 777                                            (src_height + asm_height) - 1,
 778                                            DONT_BOX_WINDOW);
 779             }
 780           else
 781             {
 782               init_gen_win_info (locator,
 783                                  LOCATOR_WIN,
 784                                  2 /* 1 */ ,
 785                                  tui_term_width (),
 786                                  0,
 787                                  (src_height + asm_height) - 1);
 788               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 789               init_gen_win_info (&TUI_DISASM_WIN->generic,
 790                                  TUI_DISASM_WIN->generic.type,
 791                                  asm_height,
 792                                  TUI_DISASM_WIN->generic.width,
 793                                  TUI_DISASM_WIN->detail.source_info.execution_info->width,
 794                                  src_height - 1);
 795               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 796                                  EXEC_INFO_WIN,
 797                                  asm_height,
 798                                  3,
 799                                  0,
 800                                  src_height - 1);
 801               TUI_DISASM_WIN->can_highlight = TRUE;
 802               tui_make_visible (&TUI_DISASM_WIN->generic);
 803               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 804             }
 805           if (TUI_DISASM_WIN != NULL)
 806             {
 807               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 808               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 809               tui_make_visible (locator);
 810               tui_show_locator_content ();
 811               tui_show_source_content (TUI_DISASM_WIN);
 812
 813               if (TUI_CMD_WIN == NULL)
 814                 make_command_window (&TUI_CMD_WIN,
 815                                      cmd_height,
 816                                      tui_term_height () - cmd_height);
 817               else
 818                 {
 819                   init_gen_win_info (&TUI_CMD_WIN->generic,
 820                                      TUI_CMD_WIN->generic.type,
 821                                      TUI_CMD_WIN->generic.height,
 822                                      TUI_CMD_WIN->generic.width,
 823                                      0,
 824                                      TUI_CMD_WIN->generic.origin.y);
 825                   TUI_CMD_WIN->can_highlight = FALSE;
 826                   tui_make_visible (&TUI_CMD_WIN->generic);
 827                 }
 828               if (TUI_CMD_WIN != NULL)
 829                 tui_refresh_win (&TUI_CMD_WIN->generic);
 830             }
 831         }
 832       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 833     }
 834 }
 835
 836
 837 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 838    layout.  */
 839 static void
 840 show_data (enum tui_layout_type new_layout)
 841 {
 842   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 843   int src_height, data_height;
 844   enum tui_win_type win_type;
 845   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 846
 847
 848   data_height = total_height / 2;
 849   src_height = total_height - data_height;
 850   tui_make_all_invisible ();
 851   tui_make_invisible (locator);
 852   make_data_window (&TUI_DATA_WIN, data_height, 0);
 853   TUI_DATA_WIN->can_highlight = TRUE;
 854   if (new_layout == SRC_DATA_COMMAND)
 855     win_type = SRC_WIN;
 856   else
 857     win_type = DISASSEM_WIN;
 858   if (tui_win_list[win_type] == NULL)
 859     {
 860       if (win_type == SRC_WIN)
 861         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 862       else
 863         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 864       locator = init_and_make_win (locator,
 865                                    LOCATOR_WIN,
 866                                    2 /* 1 */ ,
 867                                    tui_term_width (),
 868                                    0,
 869                                    total_height - 1,
 870                                    DONT_BOX_WINDOW);
 871     }
 872   else
 873     {
 874       init_gen_win_info (&tui_win_list[win_type]->generic,
 875                          tui_win_list[win_type]->generic.type,
 876                          src_height,
 877                          tui_win_list[win_type]->generic.width,
 878                          tui_win_list[win_type]->detail.source_info.execution_info->width,
 879                          data_height - 1);
 880       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 881                          EXEC_INFO_WIN,
 882                          src_height,
 883                          3,
 884                          0,
 885                          data_height - 1);
 886       tui_make_visible (&tui_win_list[win_type]->generic);
 887       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 888       init_gen_win_info (locator,
 889                          LOCATOR_WIN,
 890                          2 /* 1 */ ,
 891                          tui_term_width (),
 892                          0,
 893                          total_height - 1);
 894     }
 895   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 896   tui_make_visible (locator);
 897   tui_show_locator_content ();
 898   tui_add_to_source_windows (tui_win_list[win_type]);
 899   tui_set_current_layout_to (new_layout);
 900 }
 901
 902 /* init_gen_win_info().
 903  */
 904 static void
 905 init_gen_win_info (struct tui_gen_win_info *win_info,
 906                    enum tui_win_type type,
 907                    int height, int width,
 908                    int origin_x, int origin_y)
 909 {
 910   int h = height;
 911
 912   win_info->type = type;
 913   win_info->width = width;
 914   win_info->height = h;
 915   if (h > 1)
 916     {
 917       win_info->viewport_height = h - 1;
 918       if (win_info->type != CMD_WIN)
 919         win_info->viewport_height--;
 920     }
 921   else
 922     win_info->viewport_height = 1;
 923   win_info->origin.x = origin_x;
 924   win_info->origin.y = origin_y;
 925
 926   return;
 927 }                               /* init_gen_win_info */
 928
 929 /* init_and_make_win().
 930  */
 931 static void *
 932 init_and_make_win (void *opaque_win_info,
 933                    enum tui_win_type win_type,
 934                    int height, int width,
 935                    int origin_x, int origin_y,
 936                    int box_it)
 937 {
 938   struct tui_gen_win_info *generic;
 939
 940   if (opaque_win_info == NULL)
 941     {
 942       if (tui_win_is_auxillary (win_type))
 943         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 944       else
 945         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 946     }
 947   if (tui_win_is_auxillary (win_type))
 948     generic = (struct tui_gen_win_info *) opaque_win_info;
 949   else
 950     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 951
 952   if (opaque_win_info != NULL)
 953     {
 954       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 955       if (!tui_win_is_auxillary (win_type))
 956         {
 957           if (generic->type == CMD_WIN)
 958             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 959           else
 960             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 961         }
 962       tui_make_window (generic, box_it);
 963     }
 964   return opaque_win_info;
 965 }
 966
 967
 968 static void
 969 make_source_or_disasm_window (struct tui_win_info **win_info_ptr,
 970                               enum tui_win_type type,
 971                               int height, int origin_y)
 972 {
 973   struct tui_gen_win_info *execution_info = (struct tui_gen_win_info *) NULL;
 974
 975   /* Create the exeuction info window.  */
 976   if (type == SRC_WIN)
 977     execution_info = tui_source_exec_info_win_ptr ();
 978   else
 979     execution_info = tui_disassem_exec_info_win_ptr ();
 980   execution_info = init_and_make_win (execution_info,
 981                                       EXEC_INFO_WIN,
 982                                       height,
 983                                       3,
 984                                       0,
 985                                       origin_y,
 986                                       DONT_BOX_WINDOW);
 987
 988   /* Now create the source window.  */
 989   *win_info_ptr = init_and_make_win (*win_info_ptr,
 990                                      type,
 991                                      height,
 992                                      tui_term_width () - execution_info->width,
 993                                      execution_info->width,
 994                                      origin_y,
 995                                      BOX_WINDOW);
 996
 997   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 998 }
 999
1000
1001 /* Show the Source/Command or the Disassem layout.  */
1002 static void
1003 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
1004 {
1005   if (tui_current_layout () != layout_type)
1006     {
1007       struct tui_win_info **win_info_ptr;
1008       int src_height, cmd_height;
1009       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
1010
1011       if (TUI_CMD_WIN != NULL)
1012         cmd_height = TUI_CMD_WIN->generic.height;
1013       else
1014         cmd_height = tui_term_height () / 3;
1015       src_height = tui_term_height () - cmd_height;
1016
1017       if (layout_type == SRC_COMMAND)
1018         win_info_ptr = &TUI_SRC_WIN;
1019       else
1020         win_info_ptr = &TUI_DISASM_WIN;
1021
1022       if ((*win_info_ptr) == NULL)
1023         {
1024           if (layout_type == SRC_COMMAND)
1025             make_source_window (win_info_ptr, src_height - 1, 0);
1026           else
1027             make_disasm_window (win_info_ptr, src_height - 1, 0);
1028           locator = init_and_make_win (locator,
1029                                        LOCATOR_WIN,
1030                                        2 /* 1 */ ,
1031                                        tui_term_width (),
1032                                        0,
1033                                        src_height - 1,
1034                                        DONT_BOX_WINDOW);
1035         }
1036       else
1037         {
1038           init_gen_win_info (locator,
1039                              LOCATOR_WIN,
1040                              2 /* 1 */ ,
1041                              tui_term_width (),
1042                              0,
1043                              src_height - 1);
1044           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1045           init_gen_win_info (&(*win_info_ptr)->generic,
1046                              (*win_info_ptr)->generic.type,
1047                              src_height - 1,
1048                              (*win_info_ptr)->generic.width,
1049                              (*win_info_ptr)->detail.source_info.execution_info->width,
1050                              0);
1051           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1052                              EXEC_INFO_WIN,
1053                              src_height - 1,
1054                              3,
1055                              0,
1056                              0);
1057           (*win_info_ptr)->can_highlight = TRUE;
1058           tui_make_visible (&(*win_info_ptr)->generic);
1059           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1060         }
1061       if ((*win_info_ptr) != NULL)
1062         {
1063           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1064           tui_make_visible (locator);
1065           tui_show_locator_content ();
1066           tui_show_source_content (*win_info_ptr);
1067
1068           if (TUI_CMD_WIN == NULL)
1069             {
1070               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1071               tui_refresh_win (&TUI_CMD_WIN->generic);
1072             }
1073           else
1074             {
1075               init_gen_win_info (&TUI_CMD_WIN->generic,
1076                                  TUI_CMD_WIN->generic.type,
1077                                  TUI_CMD_WIN->generic.height,
1078                                  TUI_CMD_WIN->generic.width,
1079                                  TUI_CMD_WIN->generic.origin.x,
1080                                  TUI_CMD_WIN->generic.origin.y);
1081               TUI_CMD_WIN->can_highlight = FALSE;
1082               tui_make_visible (&TUI_CMD_WIN->generic);
1083             }
1084         }
1085       tui_set_current_layout_to (layout_type);
1086     }
1087 }