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