gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright (C) 1998-2019 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 tui_gen_win_info *init_and_make_win (tui_gen_win_info *,
  47                                             enum tui_win_type,
  48                                             int, int, int, int, int);
  49 static void show_source_or_disasm_and_command (enum tui_layout_type);
  50 static struct tui_win_info *make_source_or_disasm_window (enum tui_win_type,
  51                                                           int, int);
  52 static struct tui_win_info *make_command_window (int, int);
  53 static struct tui_win_info *make_source_window (int, int);
  54 static struct tui_win_info *make_disasm_window (int, int);
  55 static void make_data_window (struct tui_win_info **, int, int);
  56 static void show_source_command (void);
  57 static void show_disasm_command (void);
  58 static void show_source_disasm_command (void);
  59 static void show_data (enum tui_layout_type);
  60 static enum tui_layout_type next_layout (void);
  61 static enum tui_layout_type prev_layout (void);
  62 static void tui_layout_command (const char *, int);
  63 static void extract_display_start_addr (struct gdbarch **, CORE_ADDR *);
  64
  65
  66 /***************************************
  67 ** DEFINITIONS
  68 ***************************************/
  69
  70 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
  71
  72 /* Show the screen layout defined.  */
  73 static void
  74 show_layout (enum tui_layout_type layout)
  75 {
  76   enum tui_layout_type cur_layout = tui_current_layout ();
  77
  78   if (layout != cur_layout)
  79     {
  80       /* Since the new layout may cause changes in window size, we
  81          should free the content and reallocate on next display of
  82          source/asm.  */
  83       tui_free_all_source_wins_content ();
  84       tui_clear_source_windows ();
  85       if (layout == SRC_DATA_COMMAND
  86           || layout == DISASSEM_DATA_COMMAND)
  87         {
  88           show_data (layout);
  89           tui_refresh_all (tui_win_list);
  90         }
  91       else
  92         {
  93           /* First make the current layout be invisible.  */
  94           tui_make_all_invisible ();
  95           tui_make_invisible (tui_locator_win_info_ptr ());
  96
  97           switch (layout)
  98             {
  99               /* Now show the new layout.  */
 100             case SRC_COMMAND:
 101               show_source_command ();
 102               tui_add_to_source_windows (TUI_SRC_WIN);
 103               break;
 104             case DISASSEM_COMMAND:
 105               show_disasm_command ();
 106               tui_add_to_source_windows (TUI_DISASM_WIN);
 107               break;
 108             case SRC_DISASSEM_COMMAND:
 109               show_source_disasm_command ();
 110               tui_add_to_source_windows (TUI_SRC_WIN);
 111               tui_add_to_source_windows (TUI_DISASM_WIN);
 112               break;
 113             default:
 114               break;
 115             }
 116         }
 117     }
 118 }
 119
 120
 121 /* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
 122    SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.  */
 123 enum tui_status
 124 tui_set_layout (enum tui_layout_type layout_type)
 125 {
 126   enum tui_status status = TUI_SUCCESS;
 127
 128   if (layout_type != UNDEFINED_LAYOUT)
 129     {
 130       enum tui_layout_type cur_layout = tui_current_layout (),
 131         new_layout = UNDEFINED_LAYOUT;
 132       int regs_populate = FALSE;
 133       struct gdbarch *gdbarch;
 134       CORE_ADDR addr;
 135       struct tui_win_info *win_with_focus = tui_win_with_focus ();
 136       struct tui_layout_def *layout_def = tui_layout_def ();
 137
 138       extract_display_start_addr (&gdbarch, &addr);
 139
 140       new_layout = layout_type;
 141
 142       regs_populate = (new_layout == SRC_DATA_COMMAND
 143                        || new_layout == DISASSEM_DATA_COMMAND);
 144       if (new_layout != cur_layout)
 145         {
 146           show_layout (new_layout);
 147
 148           /* Now determine where focus should be.  */
 149           if (win_with_focus != TUI_CMD_WIN)
 150             {
 151               switch (new_layout)
 152                 {
 153                 case SRC_COMMAND:
 154                   tui_set_win_focus_to (TUI_SRC_WIN);
 155                   layout_def->display_mode = SRC_WIN;
 156                   layout_def->split = FALSE;
 157                   break;
 158                 case DISASSEM_COMMAND:
 159                   /* The previous layout was not showing code.
 160                      This can happen if there is no source
 161                      available:
 162
 163                      1. if the source file is in another dir OR
 164                      2. if target was compiled without -g
 165                      We still want to show the assembly though!  */
 166
 167                   tui_get_begin_asm_address (&gdbarch, &addr);
 168                   tui_set_win_focus_to (TUI_DISASM_WIN);
 169                   layout_def->display_mode = DISASSEM_WIN;
 170                   layout_def->split = FALSE;
 171                   break;
 172                 case SRC_DISASSEM_COMMAND:
 173                   /* The previous layout was not showing code.
 174                      This can happen if there is no source
 175                      available:
 176
 177                      1. if the source file is in another dir OR
 178                      2. if target was compiled without -g
 179                      We still want to show the assembly though!  */
 180
 181                   tui_get_begin_asm_address (&gdbarch, &addr);
 182                   if (win_with_focus == TUI_SRC_WIN)
 183                     tui_set_win_focus_to (TUI_SRC_WIN);
 184                   else
 185                     tui_set_win_focus_to (TUI_DISASM_WIN);
 186                   layout_def->split = TRUE;
 187                   break;
 188                 case SRC_DATA_COMMAND:
 189                   if (win_with_focus != TUI_DATA_WIN)
 190                     tui_set_win_focus_to (TUI_SRC_WIN);
 191                   else
 192                     tui_set_win_focus_to (TUI_DATA_WIN);
 193                   layout_def->display_mode = SRC_WIN;
 194                   layout_def->split = FALSE;
 195                   break;
 196                 case DISASSEM_DATA_COMMAND:
 197                   /* The previous layout was not showing code.
 198                      This can happen if there is no source
 199                      available:
 200
 201                      1. if the source file is in another dir OR
 202                      2. if target was compiled without -g
 203                      We still want to show the assembly though!  */
 204
 205                   tui_get_begin_asm_address (&gdbarch, &addr);
 206                   if (win_with_focus != TUI_DATA_WIN)
 207                     tui_set_win_focus_to (TUI_DISASM_WIN);
 208                   else
 209                     tui_set_win_focus_to (TUI_DATA_WIN);
 210                   layout_def->display_mode = DISASSEM_WIN;
 211                   layout_def->split = FALSE;
 212                   break;
 213                 default:
 214                   break;
 215                 }
 216             }
 217           /*
 218            * Now update the window content.
 219            */
 220           if (!regs_populate
 221               && (new_layout == SRC_DATA_COMMAND
 222                   || new_layout == DISASSEM_DATA_COMMAND))
 223             tui_display_all_data ();
 224
 225           tui_update_source_windows_with_addr (gdbarch, addr);
 226
 227           if (regs_populate)
 228             tui_show_registers (TUI_DATA_WIN->current_group);
 229         }
 230     }
 231   else
 232     status = TUI_FAILURE;
 233
 234   return status;
 235 }
 236
 237 /* Add the specified window to the layout in a logical way.  This
 238    means setting up the most logical layout given the window to be
 239    added.  */
 240 void
 241 tui_add_win_to_layout (enum tui_win_type type)
 242 {
 243   enum tui_layout_type cur_layout = tui_current_layout ();
 244
 245   switch (type)
 246     {
 247     case SRC_WIN:
 248       if (cur_layout != SRC_COMMAND
 249           && cur_layout != SRC_DISASSEM_COMMAND
 250           && cur_layout != SRC_DATA_COMMAND)
 251         {
 252           tui_clear_source_windows_detail ();
 253           if (cur_layout == DISASSEM_DATA_COMMAND)
 254             show_layout (SRC_DATA_COMMAND);
 255           else
 256             show_layout (SRC_COMMAND);
 257         }
 258       break;
 259     case DISASSEM_WIN:
 260       if (cur_layout != DISASSEM_COMMAND
 261           && cur_layout != SRC_DISASSEM_COMMAND
 262           && cur_layout != DISASSEM_DATA_COMMAND)
 263         {
 264           tui_clear_source_windows_detail ();
 265           if (cur_layout == SRC_DATA_COMMAND)
 266             show_layout (DISASSEM_DATA_COMMAND);
 267           else
 268             show_layout (DISASSEM_COMMAND);
 269         }
 270       break;
 271     case DATA_WIN:
 272       if (cur_layout != SRC_DATA_COMMAND
 273           && cur_layout != DISASSEM_DATA_COMMAND)
 274         {
 275           if (cur_layout == DISASSEM_COMMAND)
 276             show_layout (DISASSEM_DATA_COMMAND);
 277           else
 278             show_layout (SRC_DATA_COMMAND);
 279         }
 280       break;
 281     default:
 282       break;
 283     }
 284 }
 285
 286
 287 /* Answer the height of a window.  If it hasn't been created yet,
 288    answer what the height of a window would be based upon its type and
 289    the layout.  */
 290 int
 291 tui_default_win_height (enum tui_win_type type,
 292                         enum tui_layout_type layout)
 293 {
 294   int h;
 295
 296   if (tui_win_list[type] != NULL)
 297     h = tui_win_list[type]->height;
 298   else
 299     {
 300       switch (layout)
 301         {
 302         case SRC_COMMAND:
 303         case DISASSEM_COMMAND:
 304           if (TUI_CMD_WIN == NULL)
 305             h = tui_term_height () / 2;
 306           else
 307             h = tui_term_height () - TUI_CMD_WIN->height;
 308           break;
 309         case SRC_DISASSEM_COMMAND:
 310         case SRC_DATA_COMMAND:
 311         case DISASSEM_DATA_COMMAND:
 312           if (TUI_CMD_WIN == NULL)
 313             h = tui_term_height () / 3;
 314           else
 315             h = (tui_term_height () - TUI_CMD_WIN->height) / 2;
 316           break;
 317         default:
 318           h = 0;
 319           break;
 320         }
 321     }
 322
 323   return h;
 324 }
 325
 326
 327 /* Answer the height of a window.  If it hasn't been created yet,
 328    answer what the height of a window would be based upon its type and
 329    the layout.  */
 330 int
 331 tui_default_win_viewport_height (enum tui_win_type type,
 332                                  enum tui_layout_type layout)
 333 {
 334   int h;
 335
 336   h = tui_default_win_height (type, layout);
 337
 338   if (tui_win_list[type] == TUI_CMD_WIN)
 339     h -= 1;
 340   else
 341     h -= 2;
 342
 343   return h;
 344 }
 345
 346 /* Complete possible layout names.  TEXT is the complete text entered so
 347    far, WORD is the word currently being completed.  */
 348
 349 static void
 350 layout_completer (struct cmd_list_element *ignore,
 351                   completion_tracker &tracker,
 352                   const char *text, const char *word)
 353 {
 354   static const char *layout_names [] =
 355     { "src", "asm", "split", "regs", "next", "prev", NULL };
 356
 357   complete_on_enum (tracker, layout_names, text, word);
 358 }
 359
 360 /* Function to initialize gdb commands, for tui window layout
 361    manipulation.  */
 362
 363 void
 364 _initialize_tui_layout (void)
 365 {
 366   struct cmd_list_element *cmd;
 367
 368   cmd = add_com ("layout", class_tui, tui_layout_command, _("\
 369 Change the layout of windows.\n\
 370 Usage: layout prev | next | LAYOUT-NAME\n\
 371 Layout names are:\n\
 372    src   : Displays source and command windows.\n\
 373    asm   : Displays disassembly and command windows.\n\
 374    split : Displays source, disassembly and command windows.\n\
 375    regs  : Displays register window. If existing layout\n\
 376            is source/command or assembly/command, the \n\
 377            register window is displayed. If the\n\
 378            source/assembly/command (split) is displayed, \n\
 379            the register window is displayed with \n\
 380            the window that has current logical focus."));
 381   set_cmd_completer (cmd, layout_completer);
 382 }
 383
 384
 385 /*************************
 386 ** STATIC LOCAL FUNCTIONS
 387 **************************/
 388
 389
 390 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA, or
 391    REGS. */
 392 enum tui_status
 393 tui_set_layout_by_name (const char *layout_name)
 394 {
 395   enum tui_status status = TUI_SUCCESS;
 396
 397   if (layout_name != NULL)
 398     {
 399       int i;
 400       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 401       enum tui_layout_type cur_layout = tui_current_layout ();
 402
 403       std::string copy = layout_name;
 404       for (i = 0; i < copy.size (); i++)
 405         copy[i] = toupper (copy[i]);
 406       const char *buf_ptr = copy.c_str ();
 407
 408       /* First check for ambiguous input.  */
 409       if (strlen (buf_ptr) <= 1 && *buf_ptr == 'S')
 410         {
 411           warning (_("Ambiguous command input."));
 412           status = TUI_FAILURE;
 413         }
 414       else
 415         {
 416           if (subset_compare (buf_ptr, "SRC"))
 417             new_layout = SRC_COMMAND;
 418           else if (subset_compare (buf_ptr, "ASM"))
 419             new_layout = DISASSEM_COMMAND;
 420           else if (subset_compare (buf_ptr, "SPLIT"))
 421             new_layout = SRC_DISASSEM_COMMAND;
 422           else if (subset_compare (buf_ptr, "REGS"))
 423             {
 424               if (cur_layout == SRC_COMMAND
 425                   || cur_layout == SRC_DATA_COMMAND)
 426                 new_layout = SRC_DATA_COMMAND;
 427               else
 428                 new_layout = DISASSEM_DATA_COMMAND;
 429             }
 430           else if (subset_compare (buf_ptr, "NEXT"))
 431             new_layout = next_layout ();
 432           else if (subset_compare (buf_ptr, "PREV"))
 433             new_layout = prev_layout ();
 434           else
 435             status = TUI_FAILURE;
 436
 437           if (status == TUI_SUCCESS)
 438             {
 439               /* Make sure the curses mode is enabled.  */
 440               tui_enable ();
 441               tui_set_layout (new_layout);
 442             }
 443         }
 444     }
 445   else
 446     status = TUI_FAILURE;
 447
 448   return status;
 449 }
 450
 451
 452 static void
 453 extract_display_start_addr (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
 454 {
 455   enum tui_layout_type cur_layout = tui_current_layout ();
 456   struct gdbarch *gdbarch = get_current_arch ();
 457   CORE_ADDR addr;
 458   CORE_ADDR pc;
 459   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 460
 461   switch (cur_layout)
 462     {
 463     case SRC_COMMAND:
 464     case SRC_DATA_COMMAND:
 465       gdbarch = TUI_SRC_WIN->gdbarch;
 466       find_line_pc (cursal.symtab,
 467                     TUI_SRC_WIN->start_line_or_addr.u.line_no,
 468                     &pc);
 469       addr = pc;
 470       break;
 471     case DISASSEM_COMMAND:
 472     case SRC_DISASSEM_COMMAND:
 473     case DISASSEM_DATA_COMMAND:
 474       gdbarch = TUI_DISASM_WIN->gdbarch;
 475       addr = TUI_DISASM_WIN->start_line_or_addr.u.addr;
 476       break;
 477     default:
 478       addr = 0;
 479       break;
 480     }
 481
 482   *gdbarch_p = gdbarch;
 483   *addr_p = addr;
 484 }
 485
 486
 487 static void
 488 tui_layout_command (const char *arg, int from_tty)
 489 {
 490   /* Switch to the selected layout.  */
 491   if (tui_set_layout_by_name (arg) != TUI_SUCCESS)
 492     warning (_("Invalid layout specified.\n%s"), LAYOUT_USAGE);
 493 }
 494
 495 /* Answer the previous layout to cycle to.  */
 496 static enum tui_layout_type
 497 next_layout (void)
 498 {
 499   int new_layout;
 500
 501   new_layout = tui_current_layout ();
 502   if (new_layout == UNDEFINED_LAYOUT)
 503     new_layout = SRC_COMMAND;
 504   else
 505     {
 506       new_layout++;
 507       if (new_layout == UNDEFINED_LAYOUT)
 508         new_layout = SRC_COMMAND;
 509     }
 510
 511   return (enum tui_layout_type) new_layout;
 512 }
 513
 514
 515 /* Answer the next layout to cycle to.  */
 516 static enum tui_layout_type
 517 prev_layout (void)
 518 {
 519   int new_layout;
 520
 521   new_layout = tui_current_layout ();
 522   if (new_layout == SRC_COMMAND)
 523     new_layout = DISASSEM_DATA_COMMAND;
 524   else
 525     {
 526       new_layout--;
 527       if (new_layout == UNDEFINED_LAYOUT)
 528         new_layout = DISASSEM_DATA_COMMAND;
 529     }
 530
 531   return (enum tui_layout_type) new_layout;
 532 }
 533
 534
 535
 536 static struct tui_win_info *
 537 make_command_window (int height, int origin_y)
 538 {
 539   struct tui_win_info *result
 540     = (struct tui_win_info *) init_and_make_win (NULL,
 541                                                  CMD_WIN,
 542                                                  height,
 543                                                  tui_term_width (),
 544                                                  0,
 545                                                  origin_y,
 546                                                  DONT_BOX_WINDOW);
 547   return result;
 548 }
 549
 550
 551 /* make_source_window().
 552  */
 553 static struct tui_win_info *
 554 make_source_window (int height, int origin_y)
 555 {
 556   return make_source_or_disasm_window (SRC_WIN, height, origin_y);
 557 }                               /* make_source_window */
 558
 559
 560 /* make_disasm_window().
 561  */
 562 static struct tui_win_info *
 563 make_disasm_window (int height, int origin_y)
 564 {
 565   return make_source_or_disasm_window (DISASSEM_WIN, height, origin_y);
 566 }                               /* make_disasm_window */
 567
 568
 569 static void
 570 make_data_window (struct tui_win_info **win_info_ptr,
 571                   int height, int origin_y)
 572 {
 573   *win_info_ptr
 574     = (struct tui_win_info *) init_and_make_win (*win_info_ptr,
 575                                                  DATA_WIN,
 576                                                  height,
 577                                                  tui_term_width (),
 578                                                  0,
 579                                                  origin_y,
 580                                                  BOX_WINDOW);
 581 }
 582
 583
 584
 585 /* Show the Source/Command layout.  */
 586 static void
 587 show_source_command (void)
 588 {
 589   show_source_or_disasm_and_command (SRC_COMMAND);
 590 }
 591
 592
 593 /* Show the Dissassem/Command layout.  */
 594 static void
 595 show_disasm_command (void)
 596 {
 597   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 598 }
 599
 600
 601 /* Show the Source/Disassem/Command layout.  */
 602 static void
 603 show_source_disasm_command (void)
 604 {
 605   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 606     {
 607       int cmd_height, src_height, asm_height;
 608
 609       if (TUI_CMD_WIN != NULL)
 610         cmd_height = TUI_CMD_WIN->height;
 611       else
 612         cmd_height = tui_term_height () / 3;
 613
 614       src_height = (tui_term_height () - cmd_height) / 2;
 615       asm_height = tui_term_height () - (src_height + cmd_height);
 616
 617       if (TUI_SRC_WIN == NULL)
 618         tui_win_list[SRC_WIN] = make_source_window (src_height, 0);
 619       else
 620         {
 621           TUI_SRC_WIN->reset (TUI_SRC_WIN->type,
 622                               src_height,
 623                               TUI_SRC_WIN->width,
 624                               TUI_SRC_WIN->execution_info->width,
 625                               0);
 626           TUI_SRC_WIN->execution_info->reset (EXEC_INFO_WIN,
 627                                               src_height,
 628                                               3,
 629                                               0,
 630                                               0);
 631           tui_make_visible (TUI_SRC_WIN);
 632           tui_make_visible (TUI_SRC_WIN->execution_info);
 633           TUI_SRC_WIN->m_has_locator = false;
 634         }
 635
 636       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 637
 638       tui_show_source_content (TUI_SRC_WIN);
 639       if (TUI_DISASM_WIN == NULL)
 640         {
 641           tui_win_list[DISASSEM_WIN]
 642             = make_disasm_window (asm_height, src_height - 1);
 643           locator
 644             = init_and_make_win (locator,
 645                                  LOCATOR_WIN,
 646                                  2 /* 1 */ ,
 647                                  tui_term_width (),
 648                                  0,
 649                                  (src_height + asm_height) - 1,
 650                                  DONT_BOX_WINDOW);
 651         }
 652       else
 653         {
 654           locator->reset (LOCATOR_WIN,
 655                           2 /* 1 */ ,
 656                           tui_term_width (),
 657                           0,
 658                           (src_height + asm_height) - 1);
 659           TUI_DISASM_WIN->m_has_locator = true;
 660           TUI_DISASM_WIN->reset (TUI_DISASM_WIN->type,
 661                                  asm_height,
 662                                  TUI_DISASM_WIN->width,
 663                                  TUI_DISASM_WIN->execution_info->width,
 664                                  src_height - 1);
 665           TUI_DISASM_WIN->execution_info->reset (EXEC_INFO_WIN,
 666                                                  asm_height,
 667                                                  3,
 668                                                  0,
 669                                                  src_height - 1);
 670           tui_make_visible (TUI_DISASM_WIN);
 671           tui_make_visible (TUI_DISASM_WIN->execution_info);
 672         }
 673       TUI_SRC_WIN->m_has_locator = false;
 674       TUI_DISASM_WIN->m_has_locator = true;
 675       tui_make_visible (locator);
 676       tui_show_locator_content ();
 677       tui_show_source_content (TUI_DISASM_WIN);
 678
 679       if (TUI_CMD_WIN == NULL)
 680         tui_win_list[CMD_WIN]
 681           = make_command_window (cmd_height, tui_term_height () - cmd_height);
 682       else
 683         {
 684           TUI_CMD_WIN->reset (TUI_CMD_WIN->type,
 685                               TUI_CMD_WIN->height,
 686                               TUI_CMD_WIN->width,
 687                               0,
 688                               TUI_CMD_WIN->origin.y);
 689           tui_make_visible (TUI_CMD_WIN);
 690         }
 691       TUI_CMD_WIN->refresh_window ();
 692       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 693     }
 694 }
 695
 696
 697 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 698    layout.  */
 699 static void
 700 show_data (enum tui_layout_type new_layout)
 701 {
 702   int total_height = (tui_term_height () - TUI_CMD_WIN->height);
 703   int src_height, data_height;
 704   enum tui_win_type win_type;
 705   struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 706
 707
 708   data_height = total_height / 2;
 709   src_height = total_height - data_height;
 710   tui_make_all_invisible ();
 711   tui_make_invisible (locator);
 712   make_data_window (&tui_win_list[DATA_WIN], data_height, 0);
 713   if (new_layout == SRC_DATA_COMMAND)
 714     win_type = SRC_WIN;
 715   else
 716     win_type = DISASSEM_WIN;
 717
 718   tui_source_window_base *base;
 719   if (tui_win_list[win_type] == NULL)
 720     {
 721       if (win_type == SRC_WIN)
 722         tui_win_list[win_type]
 723           = make_source_window (src_height, data_height - 1);
 724       else
 725         tui_win_list[win_type]
 726           = make_disasm_window (src_height, data_height - 1);
 727       locator
 728         = init_and_make_win (locator,
 729                              LOCATOR_WIN,
 730                              2 /* 1 */ ,
 731                              tui_term_width (),
 732                              0,
 733                              total_height - 1,
 734                              DONT_BOX_WINDOW);
 735       base = (tui_source_window_base *) tui_win_list[win_type];
 736     }
 737   else
 738     {
 739       base = (tui_source_window_base *) tui_win_list[win_type];
 740       tui_win_list[win_type]->reset (tui_win_list[win_type]->type,
 741                                      src_height,
 742                                      tui_win_list[win_type]->width,
 743                                      base->execution_info->width,
 744                                      data_height - 1);
 745       base->execution_info->reset (EXEC_INFO_WIN,
 746                                    src_height,
 747                                    3,
 748                                    0,
 749                                    data_height - 1);
 750       tui_make_visible (tui_win_list[win_type]);
 751       tui_make_visible (base->execution_info);
 752       locator->reset (LOCATOR_WIN,
 753                       2 /* 1 */ ,
 754                       tui_term_width (),
 755                       0,
 756                       total_height - 1);
 757     }
 758   base->m_has_locator = true;
 759   tui_make_visible (locator);
 760   tui_show_locator_content ();
 761   tui_add_to_source_windows
 762     ((tui_source_window_base *) tui_win_list[win_type]);
 763   tui_set_current_layout_to (new_layout);
 764 }
 765
 766 void
 767 tui_gen_win_info::reset (enum tui_win_type win_type,
 768                          int height_, int width_,
 769                          int origin_x_, int origin_y_)
 770 {
 771   int h = height_;
 772
 773   gdb_assert (type == win_type);
 774
 775   width = width_;
 776   height = h;
 777   if (h > 1)
 778     {
 779       viewport_height = h - 1;
 780       if (type != CMD_WIN)
 781         viewport_height--;
 782     }
 783   else
 784     viewport_height = 1;
 785   origin.x = origin_x_;
 786   origin.y = origin_y_;
 787 }
 788
 789 /* init_and_make_win().
 790  */
 791 static tui_gen_win_info *
 792 init_and_make_win (tui_gen_win_info *win_info,
 793                    enum tui_win_type win_type,
 794                    int height, int width,
 795                    int origin_x, int origin_y,
 796                    int box_it)
 797 {
 798   if (win_info == NULL)
 799     {
 800       if (tui_win_is_auxillary (win_type))
 801         win_info = new tui_gen_win_info (win_type);
 802       else
 803         win_info = tui_alloc_win_info (win_type);
 804     }
 805
 806   win_info->reset (win_type, height, width, origin_x, origin_y);
 807   tui_make_window (win_info, box_it);
 808
 809   return win_info;
 810 }
 811
 812
 813 static struct tui_win_info *
 814 make_source_or_disasm_window (enum tui_win_type type,
 815                               int height, int origin_y)
 816 {
 817   struct tui_gen_win_info *execution_info
 818     = init_and_make_win (nullptr,
 819                          EXEC_INFO_WIN,
 820                          height,
 821                          3,
 822                          0,
 823                          origin_y,
 824                          DONT_BOX_WINDOW);
 825
 826   /* Now create the source window.  */
 827   struct tui_source_window_base *result
 828     = ((struct tui_source_window_base *)
 829        init_and_make_win (NULL,
 830                           type,
 831                           height,
 832                           tui_term_width () - execution_info->width,
 833                           execution_info->width,
 834                           origin_y,
 835                           BOX_WINDOW));
 836   result->execution_info = execution_info;
 837   return result;
 838 }
 839
 840
 841 /* Show the Source/Command or the Disassem layout.  */
 842 static void
 843 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 844 {
 845   if (tui_current_layout () != layout_type)
 846     {
 847       struct tui_win_info **win_info_ptr;
 848       int src_height, cmd_height;
 849       struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
 850
 851       if (TUI_CMD_WIN != NULL)
 852         cmd_height = TUI_CMD_WIN->height;
 853       else
 854         cmd_height = tui_term_height () / 3;
 855       src_height = tui_term_height () - cmd_height;
 856
 857       if (layout_type == SRC_COMMAND)
 858         win_info_ptr = &tui_win_list[SRC_WIN];
 859       else
 860         win_info_ptr = &tui_win_list[DISASSEM_WIN];
 861
 862       tui_source_window_base *base;
 863       if ((*win_info_ptr) == NULL)
 864         {
 865           if (layout_type == SRC_COMMAND)
 866             *win_info_ptr = make_source_window (src_height - 1, 0);
 867           else
 868             *win_info_ptr = make_disasm_window (src_height - 1, 0);
 869           locator
 870             = init_and_make_win (locator,
 871                                  LOCATOR_WIN,
 872                                  2 /* 1 */ ,
 873                                  tui_term_width (),
 874                                  0,
 875                                  src_height - 1,
 876                                  DONT_BOX_WINDOW);
 877           base = (tui_source_window_base *) *win_info_ptr;
 878         }
 879       else
 880         {
 881           base = (tui_source_window_base *) *win_info_ptr;
 882           locator->reset (LOCATOR_WIN,
 883                           2 /* 1 */ ,
 884                           tui_term_width (),
 885                           0,
 886                           src_height - 1);
 887           base->m_has_locator = true;
 888           (*win_info_ptr)->reset ((*win_info_ptr)->type,
 889                                   src_height - 1,
 890                                   (*win_info_ptr)->width,
 891                                   base->execution_info->width,
 892                                   0);
 893           base->execution_info->reset (EXEC_INFO_WIN,
 894                                        src_height - 1,
 895                                        3,
 896                                        0,
 897                                        0);
 898           tui_make_visible (*win_info_ptr);
 899           tui_make_visible (base->execution_info);
 900         }
 901
 902       base->m_has_locator = true;
 903       tui_make_visible (locator);
 904       tui_show_locator_content ();
 905       tui_show_source_content (*win_info_ptr);
 906
 907       if (TUI_CMD_WIN == NULL)
 908         {
 909           tui_win_list[CMD_WIN] = make_command_window (cmd_height,
 910                                                        src_height);
 911           TUI_CMD_WIN->refresh_window ();
 912         }
 913       else
 914         {
 915           TUI_CMD_WIN->reset (TUI_CMD_WIN->type,
 916                               TUI_CMD_WIN->height,
 917                               TUI_CMD_WIN->width,
 918                               TUI_CMD_WIN->origin.x,
 919                               TUI_CMD_WIN->origin.y);
 920           tui_make_visible (TUI_CMD_WIN);
 921         }
 922       tui_set_current_layout_to (layout_type);
 923     }
 924 }