gdb/tui/tui-layout.c

   1 /* TUI layout window management.
   2
   3    Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
   4    Foundation, Inc.
   5
   6    Contributed by Hewlett-Packard Company.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330,
  23    Boston, MA 02111-1307, USA.  */
  24
  25 #include "defs.h"
  26 #include "command.h"
  27 #include "symtab.h"
  28 #include "frame.h"
  29 #include "source.h"
  30 #include <ctype.h>
  31
  32 #include "tui/tui.h"
  33 #include "tui/tui-data.h"
  34 #include "tui/tui-windata.h"
  35 #include "tui/tui-wingeneral.h"
  36 #include "tui/tui-stack.h"
  37 #include "tui/tui-regs.h"
  38 #include "tui/tui-win.h"
  39 #include "tui/tui-winsource.h"
  40 #include "tui/tui-disasm.h"
  41
  42 #include "gdb_string.h"
  43 #include "gdb_curses.h"
  44
  45 /*******************************
  46 ** Static Local Decls
  47 ********************************/
  48 static void show_layout (enum tui_layout_type);
  49 static void init_gen_win_info (struct tui_gen_win_info *, enum tui_win_type, int, int, int, int);
  50 static void init_and_make_win (void **, enum tui_win_type, 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 * *, enum tui_win_type, int, int);
  53 static void make_command_window (struct tui_win_info * *, int, int);
  54 static void make_source_window (struct tui_win_info * *, int, int);
  55 static void make_disasm_window (struct tui_win_info * *, 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 (char *, int);
  64 static void tui_toggle_layout_command (char *, int);
  65 static void tui_toggle_split_layout_command (char *, int);
  66 static CORE_ADDR extract_display_start_addr (void);
  67 static void tui_handle_xdb_layout (struct tui_layout_def *);
  68
  69
  70 /***************************************
  71 ** DEFINITIONS
  72 ***************************************/
  73
  74 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
  75
  76 /* Show the screen layout defined.  */
  77 static void
  78 show_layout (enum tui_layout_type layout)
  79 {
  80   enum tui_layout_type cur_layout = tui_current_layout ();
  81
  82   if (layout != cur_layout)
  83     {
  84       /*
  85          ** Since the new layout may cause changes in window size, we
  86          ** should free the content and reallocate on next display of
  87          ** source/asm
  88        */
  89       tui_free_all_source_wins_content ();
  90       tui_clear_source_windows ();
  91       if (layout == SRC_DATA_COMMAND || layout == DISASSEM_DATA_COMMAND)
  92         {
  93           show_data (layout);
  94           tui_refresh_all (tui_win_list);
  95         }
  96       else
  97         {
  98           /* First make the current layout be invisible */
  99           tui_make_all_invisible ();
 100           tui_make_invisible (tui_locator_win_info_ptr ());
 101
 102           switch (layout)
 103             {
 104               /* Now show the new layout */
 105             case SRC_COMMAND:
 106               show_source_command ();
 107               tui_add_to_source_windows (TUI_SRC_WIN);
 108               break;
 109             case DISASSEM_COMMAND:
 110               show_disasm_command ();
 111               tui_add_to_source_windows (TUI_DISASM_WIN);
 112               break;
 113             case SRC_DISASSEM_COMMAND:
 114               show_source_disasm_command ();
 115               tui_add_to_source_windows (TUI_SRC_WIN);
 116               tui_add_to_source_windows (TUI_DISASM_WIN);
 117               break;
 118             default:
 119               break;
 120             }
 121         }
 122     }
 123 }
 124
 125
 126 /* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
 127    SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.
 128    If the layout is SRC_DATA_COMMAND, DISASSEM_DATA_COMMAND, or
 129    UNDEFINED_LAYOUT, then the data window is populated according to
 130    regs_display_type.  */
 131 enum tui_status
 132 tui_set_layout (enum tui_layout_type layout_type,
 133                 enum tui_register_display_type regs_display_type)
 134 {
 135   enum tui_status status = TUI_SUCCESS;
 136
 137   if (layout_type != UNDEFINED_LAYOUT || regs_display_type != TUI_UNDEFINED_REGS)
 138     {
 139       enum tui_layout_type cur_layout = tui_current_layout (), new_layout = UNDEFINED_LAYOUT;
 140       int regs_populate = FALSE;
 141       CORE_ADDR addr = extract_display_start_addr ();
 142       struct tui_win_info * new_win_with_focus = (struct tui_win_info *) NULL;
 143       struct tui_win_info * win_with_focus = tui_win_with_focus ();
 144       struct tui_layout_def * layout_def = tui_layout_def ();
 145
 146
 147       if (layout_type == UNDEFINED_LAYOUT &&
 148           regs_display_type != TUI_UNDEFINED_REGS)
 149         {
 150           if (cur_layout == SRC_DISASSEM_COMMAND)
 151             new_layout = DISASSEM_DATA_COMMAND;
 152           else if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
 153             new_layout = SRC_DATA_COMMAND;
 154           else if (cur_layout == DISASSEM_COMMAND ||
 155                    cur_layout == DISASSEM_DATA_COMMAND)
 156             new_layout = DISASSEM_DATA_COMMAND;
 157         }
 158       else
 159         new_layout = layout_type;
 160
 161       regs_populate = (new_layout == SRC_DATA_COMMAND ||
 162                       new_layout == DISASSEM_DATA_COMMAND ||
 163                       regs_display_type != TUI_UNDEFINED_REGS);
 164       if (new_layout != cur_layout || regs_display_type != TUI_UNDEFINED_REGS)
 165         {
 166           if (new_layout != cur_layout)
 167             {
 168               show_layout (new_layout);
 169               /*
 170                  ** Now determine where focus should be
 171                */
 172               if (win_with_focus != TUI_CMD_WIN)
 173                 {
 174                   switch (new_layout)
 175                     {
 176                     case SRC_COMMAND:
 177                       tui_set_win_focus_to (TUI_SRC_WIN);
 178                       layout_def->display_mode = SRC_WIN;
 179                       layout_def->split = FALSE;
 180                       break;
 181                     case DISASSEM_COMMAND:
 182                       /* the previous layout was not showing
 183                          ** code. this can happen if there is no
 184                          ** source available:
 185                          ** 1. if the source file is in another dir OR
 186                          ** 2. if target was compiled without -g
 187                          ** We still want to show the assembly though!
 188                        */
 189                       addr = tui_get_begin_asm_address ();
 190                       tui_set_win_focus_to (TUI_DISASM_WIN);
 191                       layout_def->display_mode = DISASSEM_WIN;
 192                       layout_def->split = FALSE;
 193                       break;
 194                     case SRC_DISASSEM_COMMAND:
 195                       /* the previous layout was not showing
 196                          ** code. this can happen if there is no
 197                          ** source available:
 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                       addr = tui_get_begin_asm_address ();
 203                       if (win_with_focus == TUI_SRC_WIN)
 204                         tui_set_win_focus_to (TUI_SRC_WIN);
 205                       else
 206                         tui_set_win_focus_to (TUI_DISASM_WIN);
 207                       layout_def->split = TRUE;
 208                       break;
 209                     case SRC_DATA_COMMAND:
 210                       if (win_with_focus != TUI_DATA_WIN)
 211                         tui_set_win_focus_to (TUI_SRC_WIN);
 212                       else
 213                         tui_set_win_focus_to (TUI_DATA_WIN);
 214                       layout_def->display_mode = SRC_WIN;
 215                       layout_def->split = FALSE;
 216                       break;
 217                     case DISASSEM_DATA_COMMAND:
 218                       /* the previous layout was not showing
 219                          ** code. this can happen if there is no
 220                          ** source available:
 221                          ** 1. if the source file is in another dir OR
 222                          ** 2. if target was compiled without -g
 223                          ** We still want to show the assembly though!
 224                        */
 225                       addr = tui_get_begin_asm_address ();
 226                       if (win_with_focus != TUI_DATA_WIN)
 227                         tui_set_win_focus_to (TUI_DISASM_WIN);
 228                       else
 229                         tui_set_win_focus_to (TUI_DATA_WIN);
 230                       layout_def->display_mode = DISASSEM_WIN;
 231                       layout_def->split = FALSE;
 232                       break;
 233                     default:
 234                       break;
 235                     }
 236                 }
 237               if (new_win_with_focus != (struct tui_win_info *) NULL)
 238                 tui_set_win_focus_to (new_win_with_focus);
 239               /*
 240                  ** Now update the window content
 241                */
 242               if (!regs_populate &&
 243                   (new_layout == SRC_DATA_COMMAND ||
 244                    new_layout == DISASSEM_DATA_COMMAND))
 245                 tui_display_all_data ();
 246
 247               tui_update_source_windows_with_addr (addr);
 248             }
 249           if (regs_populate)
 250             {
 251               layout_def->regs_display_type =
 252                 (regs_display_type == TUI_UNDEFINED_REGS ?
 253                  TUI_GENERAL_REGS : regs_display_type);
 254               tui_show_registers (layout_def->regs_display_type);
 255             }
 256         }
 257     }
 258   else
 259     status = TUI_FAILURE;
 260
 261   return status;
 262 }
 263
 264 /* Add the specified window to the layout in a logical way.  This
 265    means setting up the most logical layout given the window to be
 266    added.  */
 267 void
 268 tui_add_win_to_layout (enum tui_win_type type)
 269 {
 270   enum tui_layout_type cur_layout = tui_current_layout ();
 271
 272   switch (type)
 273     {
 274     case SRC_WIN:
 275       if (cur_layout != SRC_COMMAND &&
 276           cur_layout != SRC_DISASSEM_COMMAND &&
 277           cur_layout != SRC_DATA_COMMAND)
 278         {
 279           tui_clear_source_windows_detail ();
 280           if (cur_layout == DISASSEM_DATA_COMMAND)
 281             show_layout (SRC_DATA_COMMAND);
 282           else
 283             show_layout (SRC_COMMAND);
 284         }
 285       break;
 286     case DISASSEM_WIN:
 287       if (cur_layout != DISASSEM_COMMAND &&
 288           cur_layout != SRC_DISASSEM_COMMAND &&
 289           cur_layout != DISASSEM_DATA_COMMAND)
 290         {
 291           tui_clear_source_windows_detail ();
 292           if (cur_layout == SRC_DATA_COMMAND)
 293             show_layout (DISASSEM_DATA_COMMAND);
 294           else
 295             show_layout (DISASSEM_COMMAND);
 296         }
 297       break;
 298     case DATA_WIN:
 299       if (cur_layout != SRC_DATA_COMMAND &&
 300           cur_layout != DISASSEM_DATA_COMMAND)
 301         {
 302           if (cur_layout == DISASSEM_COMMAND)
 303             show_layout (DISASSEM_DATA_COMMAND);
 304           else
 305             show_layout (SRC_DATA_COMMAND);
 306         }
 307       break;
 308     default:
 309       break;
 310     }
 311 }
 312
 313
 314 /* Answer the height of a window.  If it hasn't been created yet,
 315    answer what the height of a window would be based upon its type and
 316    the layout.  */
 317 int
 318 tui_default_win_height (enum tui_win_type type, enum tui_layout_type layout)
 319 {
 320   int h;
 321
 322   if (tui_win_list[type] != (struct tui_win_info *) NULL)
 323     h = tui_win_list[type]->generic.height;
 324   else
 325     {
 326       switch (layout)
 327         {
 328         case SRC_COMMAND:
 329         case DISASSEM_COMMAND:
 330           if (TUI_CMD_WIN == NULL)
 331             h = tui_term_height () / 2;
 332           else
 333             h = tui_term_height () - TUI_CMD_WIN->generic.height;
 334           break;
 335         case SRC_DISASSEM_COMMAND:
 336         case SRC_DATA_COMMAND:
 337         case DISASSEM_DATA_COMMAND:
 338           if (TUI_CMD_WIN == NULL)
 339             h = tui_term_height () / 3;
 340           else
 341             h = (tui_term_height () - TUI_CMD_WIN->generic.height) / 2;
 342           break;
 343         default:
 344           h = 0;
 345           break;
 346         }
 347     }
 348
 349   return h;
 350 }
 351
 352
 353 /* Answer the height of a window.  If it hasn't been created yet,
 354    answer what the height of a window would be based upon its type and
 355    the layout.  */
 356 int
 357 tui_default_win_viewport_height (enum tui_win_type type,
 358                                  enum tui_layout_type layout)
 359 {
 360   int h;
 361
 362   h = tui_default_win_height (type, layout);
 363
 364   if (tui_win_list[type] == TUI_CMD_WIN)
 365     h -= 1;
 366   else
 367     h -= 2;
 368
 369   return h;
 370 }
 371
 372
 373 /* Function to initialize gdb commands, for tui window layout
 374    manipulation.  */
 375 void
 376 _initialize_tui_layout (void)
 377 {
 378   add_com ("layout", class_tui, tui_layout_command,
 379            "Change the layout of windows.\n\
 380 Usage: layout prev | next | <layout_name> \n\
 381 Layout names are:\n\
 382    src   : Displays source and command windows.\n\
 383    asm   : Displays disassembly and command windows.\n\
 384    split : Displays source, disassembly and command windows.\n\
 385    regs  : Displays register window. If existing layout\n\
 386            is source/command or assembly/command, the \n\
 387            register window is displayed. If the\n\
 388            source/assembly/command (split) is displayed, \n\
 389            the register window is displayed with \n\
 390            the window that has current logical focus.\n");
 391   if (xdb_commands)
 392     {
 393       add_com ("td", class_tui, tui_toggle_layout_command,
 394                "Toggle between Source/Command and Disassembly/Command layouts.\n");
 395       add_com ("ts", class_tui, tui_toggle_split_layout_command,
 396                "Toggle between Source/Command or Disassembly/Command and \n\
 397 Source/Disassembly/Command layouts.\n");
 398     }
 399 }
 400
 401
 402 /*************************
 403 ** STATIC LOCAL FUNCTIONS
 404 **************************/
 405
 406
 407 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA,
 408    REGS, $REGS, $GREGS, $FREGS, $SREGS.  */
 409 enum tui_status
 410 tui_set_layout_for_display_command (const char *layout_name)
 411 {
 412   enum tui_status status = TUI_SUCCESS;
 413
 414   if (layout_name != (char *) NULL)
 415     {
 416       int i;
 417       char *buf_ptr;
 418       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
 419       enum tui_register_display_type dpy_type = TUI_UNDEFINED_REGS;
 420       enum tui_layout_type cur_layout = tui_current_layout ();
 421
 422       buf_ptr = (char *) xstrdup (layout_name);
 423       for (i = 0; (i < strlen (layout_name)); i++)
 424         buf_ptr[i] = toupper (buf_ptr[i]);
 425
 426       /* First check for ambiguous input */
 427       if (strlen (buf_ptr) <= 1 && (*buf_ptr == 'S' || *buf_ptr == '$'))
 428         {
 429           warning ("Ambiguous command input.\n");
 430           status = TUI_FAILURE;
 431         }
 432       else
 433         {
 434           if (subset_compare (buf_ptr, "SRC"))
 435             new_layout = SRC_COMMAND;
 436           else if (subset_compare (buf_ptr, "ASM"))
 437             new_layout = DISASSEM_COMMAND;
 438           else if (subset_compare (buf_ptr, "SPLIT"))
 439             new_layout = SRC_DISASSEM_COMMAND;
 440           else if (subset_compare (buf_ptr, "REGS") ||
 441                    subset_compare (buf_ptr, TUI_GENERAL_SPECIAL_REGS_NAME) ||
 442                    subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME) ||
 443                    subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME) ||
 444                    subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 445             {
 446               if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
 447                 new_layout = SRC_DATA_COMMAND;
 448               else
 449                 new_layout = DISASSEM_DATA_COMMAND;
 450
 451 /* could ifdef out the following code. when compile with -z, there are null
 452    pointer references that cause a core dump if 'layout regs' is the first
 453    layout command issued by the user. HP has asked us to hook up this code
 454    - edie epstein
 455  */
 456               if (subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME))
 457                 {
 458                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 459                       TUI_SFLOAT_REGS &&
 460                       TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 461                       TUI_DFLOAT_REGS)
 462                     dpy_type = TUI_SFLOAT_REGS;
 463                   else
 464                     dpy_type =
 465                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 466                 }
 467               else if (subset_compare (buf_ptr,
 468                                       TUI_GENERAL_SPECIAL_REGS_NAME))
 469                 dpy_type = TUI_GENERAL_AND_SPECIAL_REGS;
 470               else if (subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME))
 471                 dpy_type = TUI_GENERAL_REGS;
 472               else if (subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
 473                 dpy_type = TUI_SPECIAL_REGS;
 474               else if (TUI_DATA_WIN)
 475                 {
 476                   if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
 477                       TUI_UNDEFINED_REGS)
 478                     dpy_type =
 479                       TUI_DATA_WIN->detail.data_display_info.regs_display_type;
 480                   else
 481                     dpy_type = TUI_GENERAL_REGS;
 482                 }
 483
 484 /* end of potential ifdef
 485  */
 486
 487 /* if ifdefed out code above, then assume that the user wishes to display the
 488    general purpose registers
 489  */
 490
 491 /*              dpy_type = TUI_GENERAL_REGS;
 492  */
 493             }
 494           else if (subset_compare (buf_ptr, "NEXT"))
 495             new_layout = next_layout ();
 496           else if (subset_compare (buf_ptr, "PREV"))
 497             new_layout = prev_layout ();
 498           else
 499             status = TUI_FAILURE;
 500           xfree (buf_ptr);
 501
 502           tui_set_layout (new_layout, dpy_type);
 503         }
 504     }
 505   else
 506     status = TUI_FAILURE;
 507
 508   return status;
 509 }
 510
 511
 512 static CORE_ADDR
 513 extract_display_start_addr (void)
 514 {
 515   enum tui_layout_type cur_layout = tui_current_layout ();
 516   CORE_ADDR addr;
 517   CORE_ADDR pc;
 518   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
 519
 520   switch (cur_layout)
 521     {
 522     case SRC_COMMAND:
 523     case SRC_DATA_COMMAND:
 524       find_line_pc (cursal.symtab,
 525                     TUI_SRC_WIN->detail.source_info.start_line_or_addr.line_no,
 526                     &pc);
 527       addr = pc;
 528       break;
 529     case DISASSEM_COMMAND:
 530     case SRC_DISASSEM_COMMAND:
 531     case DISASSEM_DATA_COMMAND:
 532       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.addr;
 533       break;
 534     default:
 535       addr = 0;
 536       break;
 537     }
 538
 539   return addr;
 540 }
 541
 542
 543 static void
 544 tui_handle_xdb_layout (struct tui_layout_def * layout_def)
 545 {
 546   if (layout_def->split)
 547     {
 548       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
 549       tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
 550     }
 551   else
 552     {
 553       if (layout_def->display_mode == SRC_WIN)
 554         tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
 555       else
 556         tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
 557     }
 558 }
 559
 560
 561 static void
 562 tui_toggle_layout_command (char *arg, int from_tty)
 563 {
 564   struct tui_layout_def * layout_def = tui_layout_def ();
 565
 566   /* Make sure the curses mode is enabled.  */
 567   tui_enable ();
 568   if (layout_def->display_mode == SRC_WIN)
 569     layout_def->display_mode = DISASSEM_WIN;
 570   else
 571     layout_def->display_mode = SRC_WIN;
 572
 573   if (!layout_def->split)
 574     tui_handle_xdb_layout (layout_def);
 575 }
 576
 577
 578 static void
 579 tui_toggle_split_layout_command (char *arg, int from_tty)
 580 {
 581   struct tui_layout_def * layout_def = tui_layout_def ();
 582
 583   /* Make sure the curses mode is enabled.  */
 584   tui_enable ();
 585   layout_def->split = (!layout_def->split);
 586   tui_handle_xdb_layout (layout_def);
 587 }
 588
 589
 590 static void
 591 tui_layout_command (char *arg, int from_tty)
 592 {
 593   /* Make sure the curses mode is enabled.  */
 594   tui_enable ();
 595
 596   /* Switch to the selected layout.  */
 597   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
 598     warning ("Invalid layout specified.\n%s", LAYOUT_USAGE);
 599
 600 }
 601
 602 /* Answer the previous layout to cycle to.  */
 603 static enum tui_layout_type
 604 next_layout (void)
 605 {
 606   enum tui_layout_type new_layout;
 607
 608   new_layout = tui_current_layout ();
 609   if (new_layout == UNDEFINED_LAYOUT)
 610     new_layout = SRC_COMMAND;
 611   else
 612     {
 613       new_layout++;
 614       if (new_layout == UNDEFINED_LAYOUT)
 615         new_layout = SRC_COMMAND;
 616     }
 617
 618   return new_layout;
 619 }
 620
 621
 622 /* Answer the next layout to cycle to.  */
 623 static enum tui_layout_type
 624 prev_layout (void)
 625 {
 626   enum tui_layout_type new_layout;
 627
 628   new_layout = tui_current_layout ();
 629   if (new_layout == SRC_COMMAND)
 630     new_layout = DISASSEM_DATA_COMMAND;
 631   else
 632     {
 633       new_layout--;
 634       if (new_layout == UNDEFINED_LAYOUT)
 635         new_layout = DISASSEM_DATA_COMMAND;
 636     }
 637
 638   return new_layout;
 639 }
 640
 641
 642
 643 static void
 644 make_command_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
 645 {
 646   init_and_make_win ((void **) win_info_ptr,
 647                    CMD_WIN,
 648                    height,
 649                    tui_term_width (),
 650                    0,
 651                    origin_y,
 652                    DONT_BOX_WINDOW);
 653
 654   (*win_info_ptr)->can_highlight = FALSE;
 655 }
 656
 657
 658 /*
 659    ** make_source_window().
 660  */
 661 static void
 662 make_source_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
 663 {
 664   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
 665
 666   return;
 667 }                               /* make_source_window */
 668
 669
 670 /*
 671    ** make_disasm_window().
 672  */
 673 static void
 674 make_disasm_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
 675 {
 676   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
 677
 678   return;
 679 }                               /* make_disasm_window */
 680
 681
 682 static void
 683 make_data_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
 684 {
 685   init_and_make_win ((void **) win_info_ptr,
 686                    DATA_WIN,
 687                    height,
 688                    tui_term_width (),
 689                    0,
 690                    origin_y,
 691                    BOX_WINDOW);
 692 }
 693
 694
 695
 696 /* Show the Source/Command layout.  */
 697 static void
 698 show_source_command (void)
 699 {
 700   show_source_or_disasm_and_command (SRC_COMMAND);
 701 }
 702
 703
 704 /* Show the Dissassem/Command layout.  */
 705 static void
 706 show_disasm_command (void)
 707 {
 708   show_source_or_disasm_and_command (DISASSEM_COMMAND);
 709 }
 710
 711
 712 /* Show the Source/Disassem/Command layout.  */
 713 static void
 714 show_source_disasm_command (void)
 715 {
 716   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
 717     {
 718       int cmd_height, src_height, asm_height;
 719
 720       if (TUI_CMD_WIN != NULL)
 721         cmd_height = TUI_CMD_WIN->generic.height;
 722       else
 723         cmd_height = tui_term_height () / 3;
 724
 725       src_height = (tui_term_height () - cmd_height) / 2;
 726       asm_height = tui_term_height () - (src_height + cmd_height);
 727
 728       if (TUI_SRC_WIN == NULL)
 729         make_source_window (&TUI_SRC_WIN, src_height, 0);
 730       else
 731         {
 732           init_gen_win_info (&TUI_SRC_WIN->generic,
 733                            TUI_SRC_WIN->generic.type,
 734                            src_height,
 735                            TUI_SRC_WIN->generic.width,
 736                            TUI_SRC_WIN->detail.source_info.execution_info->width,
 737                            0);
 738           TUI_SRC_WIN->can_highlight = TRUE;
 739           init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
 740                            EXEC_INFO_WIN,
 741                            src_height,
 742                            3,
 743                            0,
 744                            0);
 745           tui_make_visible (&TUI_SRC_WIN->generic);
 746           tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
 747           TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
 748         }
 749       if (TUI_SRC_WIN != NULL)
 750         {
 751           struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
 752
 753           tui_show_source_content (TUI_SRC_WIN);
 754           if (TUI_DISASM_WIN == NULL)
 755             {
 756               make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
 757               init_and_make_win ((void **) & locator,
 758                                LOCATOR_WIN,
 759                                2 /* 1 */ ,
 760                                tui_term_width (),
 761                                0,
 762                                (src_height + asm_height) - 1,
 763                                DONT_BOX_WINDOW);
 764             }
 765           else
 766             {
 767               init_gen_win_info (locator,
 768                                LOCATOR_WIN,
 769                                2 /* 1 */ ,
 770                                tui_term_width (),
 771                                0,
 772                                (src_height + asm_height) - 1);
 773               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 774               init_gen_win_info (
 775                                 &TUI_DISASM_WIN->generic,
 776                                 TUI_DISASM_WIN->generic.type,
 777                                 asm_height,
 778                                 TUI_DISASM_WIN->generic.width,
 779                         TUI_DISASM_WIN->detail.source_info.execution_info->width,
 780                                 src_height - 1);
 781               init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
 782                                EXEC_INFO_WIN,
 783                                asm_height,
 784                                3,
 785                                0,
 786                                src_height - 1);
 787               TUI_DISASM_WIN->can_highlight = TRUE;
 788               tui_make_visible (&TUI_DISASM_WIN->generic);
 789               tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
 790             }
 791           if (TUI_DISASM_WIN != NULL)
 792             {
 793               TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
 794               TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
 795               tui_make_visible (locator);
 796               tui_show_locator_content ();
 797               tui_show_source_content (TUI_DISASM_WIN);
 798
 799               if (TUI_CMD_WIN == NULL)
 800                 make_command_window (&TUI_CMD_WIN,
 801                                     cmd_height,
 802                                     tui_term_height () - cmd_height);
 803               else
 804                 {
 805                   init_gen_win_info (&TUI_CMD_WIN->generic,
 806                                    TUI_CMD_WIN->generic.type,
 807                                    TUI_CMD_WIN->generic.height,
 808                                    TUI_CMD_WIN->generic.width,
 809                                    0,
 810                                    TUI_CMD_WIN->generic.origin.y);
 811                   TUI_CMD_WIN->can_highlight = FALSE;
 812                   tui_make_visible (&TUI_CMD_WIN->generic);
 813                 }
 814               if (TUI_CMD_WIN != NULL)
 815                 tui_refresh_win (&TUI_CMD_WIN->generic);
 816             }
 817         }
 818       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
 819     }
 820 }
 821
 822
 823 /* Show the Source/Data/Command or the Dissassembly/Data/Command
 824    layout.  */
 825 static void
 826 show_data (enum tui_layout_type new_layout)
 827 {
 828   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
 829   int src_height, data_height;
 830   enum tui_win_type win_type;
 831   struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
 832
 833
 834   data_height = total_height / 2;
 835   src_height = total_height - data_height;
 836   tui_make_all_invisible ();
 837   tui_make_invisible (locator);
 838   make_data_window (&TUI_DATA_WIN, data_height, 0);
 839   TUI_DATA_WIN->can_highlight = TRUE;
 840   if (new_layout == SRC_DATA_COMMAND)
 841     win_type = SRC_WIN;
 842   else
 843     win_type = DISASSEM_WIN;
 844   if (tui_win_list[win_type] == NULL)
 845     {
 846       if (win_type == SRC_WIN)
 847         make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
 848       else
 849         make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
 850       init_and_make_win ((void **) & locator,
 851                        LOCATOR_WIN,
 852                        2 /* 1 */ ,
 853                        tui_term_width (),
 854                        0,
 855                        total_height - 1,
 856                        DONT_BOX_WINDOW);
 857     }
 858   else
 859     {
 860       init_gen_win_info (&tui_win_list[win_type]->generic,
 861                        tui_win_list[win_type]->generic.type,
 862                        src_height,
 863                        tui_win_list[win_type]->generic.width,
 864                    tui_win_list[win_type]->detail.source_info.execution_info->width,
 865                        data_height - 1);
 866       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
 867                        EXEC_INFO_WIN,
 868                        src_height,
 869                        3,
 870                        0,
 871                        data_height - 1);
 872       tui_make_visible (&tui_win_list[win_type]->generic);
 873       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
 874       init_gen_win_info (locator,
 875                        LOCATOR_WIN,
 876                        2 /* 1 */ ,
 877                        tui_term_width (),
 878                        0,
 879                        total_height - 1);
 880     }
 881   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
 882   tui_make_visible (locator);
 883   tui_show_locator_content ();
 884   tui_add_to_source_windows (tui_win_list[win_type]);
 885   tui_set_current_layout_to (new_layout);
 886 }
 887
 888 /*
 889    ** init_gen_win_info().
 890  */
 891 static void
 892 init_gen_win_info (struct tui_gen_win_info * win_info, enum tui_win_type type,
 893                  int height, int width, int origin_x, int origin_y)
 894 {
 895   int h = height;
 896
 897   win_info->type = type;
 898   win_info->width = width;
 899   win_info->height = h;
 900   if (h > 1)
 901     {
 902       win_info->viewport_height = h - 1;
 903       if (win_info->type != CMD_WIN)
 904         win_info->viewport_height--;
 905     }
 906   else
 907     win_info->viewport_height = 1;
 908   win_info->origin.x = origin_x;
 909   win_info->origin.y = origin_y;
 910
 911   return;
 912 }                               /* init_gen_win_info */
 913
 914 /*
 915    ** init_and_make_win().
 916  */
 917 static void
 918 init_and_make_win (void ** win_info_ptr, enum tui_win_type win_type,
 919                  int height, int width, int origin_x, int origin_y, int box_it)
 920 {
 921   void *opaque_win_info = *win_info_ptr;
 922   struct tui_gen_win_info * generic;
 923
 924   if (opaque_win_info == NULL)
 925     {
 926       if (tui_win_is_auxillary (win_type))
 927         opaque_win_info = (void *) tui_alloc_generic_win_info ();
 928       else
 929         opaque_win_info = (void *) tui_alloc_win_info (win_type);
 930     }
 931   if (tui_win_is_auxillary (win_type))
 932     generic = (struct tui_gen_win_info *) opaque_win_info;
 933   else
 934     generic = &((struct tui_win_info *) opaque_win_info)->generic;
 935
 936   if (opaque_win_info != NULL)
 937     {
 938       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
 939       if (!tui_win_is_auxillary (win_type))
 940         {
 941           if (generic->type == CMD_WIN)
 942             ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
 943           else
 944             ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
 945         }
 946       tui_make_window (generic, box_it);
 947     }
 948   *win_info_ptr = opaque_win_info;
 949 }
 950
 951
 952 static void
 953 make_source_or_disasm_window (struct tui_win_info * * win_info_ptr, enum tui_win_type type,
 954                              int height, int origin_y)
 955 {
 956   struct tui_gen_win_info * execution_info = (struct tui_gen_win_info *) NULL;
 957
 958   /*
 959      ** Create the exeuction info window.
 960    */
 961   if (type == SRC_WIN)
 962     execution_info = tui_source_exec_info_win_ptr ();
 963   else
 964     execution_info = tui_disassem_exec_info_win_ptr ();
 965   init_and_make_win ((void **) & execution_info,
 966                    EXEC_INFO_WIN,
 967                    height,
 968                    3,
 969                    0,
 970                    origin_y,
 971                    DONT_BOX_WINDOW);
 972   /*
 973      ** Now create the source window.
 974    */
 975   init_and_make_win ((void **) win_info_ptr,
 976                    type,
 977                    height,
 978                    tui_term_width () - execution_info->width,
 979                    execution_info->width,
 980                    origin_y,
 981                    BOX_WINDOW);
 982
 983   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
 984 }
 985
 986
 987 /* Show the Source/Command or the Disassem layout.   */
 988 static void
 989 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 990 {
 991   if (tui_current_layout () != layout_type)
 992     {
 993       struct tui_win_info * *win_info_ptr;
 994       int src_height, cmd_height;
 995       struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
 996
 997       if (TUI_CMD_WIN != NULL)
 998         cmd_height = TUI_CMD_WIN->generic.height;
 999       else
1000         cmd_height = tui_term_height () / 3;
1001       src_height = tui_term_height () - cmd_height;
1002
1003
1004       if (layout_type == SRC_COMMAND)
1005         win_info_ptr = &TUI_SRC_WIN;
1006       else
1007         win_info_ptr = &TUI_DISASM_WIN;
1008
1009       if ((*win_info_ptr) == NULL)
1010         {
1011           if (layout_type == SRC_COMMAND)
1012             make_source_window (win_info_ptr, src_height - 1, 0);
1013           else
1014             make_disasm_window (win_info_ptr, src_height - 1, 0);
1015           init_and_make_win ((void **) & locator,
1016                            LOCATOR_WIN,
1017                            2 /* 1 */ ,
1018                            tui_term_width (),
1019                            0,
1020                            src_height - 1,
1021                            DONT_BOX_WINDOW);
1022         }
1023       else
1024         {
1025           init_gen_win_info (locator,
1026                            LOCATOR_WIN,
1027                            2 /* 1 */ ,
1028                            tui_term_width (),
1029                            0,
1030                            src_height - 1);
1031           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1032           init_gen_win_info (
1033                             &(*win_info_ptr)->generic,
1034                             (*win_info_ptr)->generic.type,
1035                             src_height - 1,
1036                             (*win_info_ptr)->generic.width,
1037                       (*win_info_ptr)->detail.source_info.execution_info->width,
1038                             0);
1039           init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1040                            EXEC_INFO_WIN,
1041                            src_height - 1,
1042                            3,
1043                            0,
1044                            0);
1045           (*win_info_ptr)->can_highlight = TRUE;
1046           tui_make_visible (&(*win_info_ptr)->generic);
1047           tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1048         }
1049       if ((*win_info_ptr) != NULL)
1050         {
1051           (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1052           tui_make_visible (locator);
1053           tui_show_locator_content ();
1054           tui_show_source_content (*win_info_ptr);
1055
1056           if (TUI_CMD_WIN == NULL)
1057             {
1058               make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1059               tui_refresh_win (&TUI_CMD_WIN->generic);
1060             }
1061           else
1062             {
1063               init_gen_win_info (&TUI_CMD_WIN->generic,
1064                                TUI_CMD_WIN->generic.type,
1065                                TUI_CMD_WIN->generic.height,
1066                                TUI_CMD_WIN->generic.width,
1067                                TUI_CMD_WIN->generic.origin.x,
1068                                TUI_CMD_WIN->generic.origin.y);
1069               TUI_CMD_WIN->can_highlight = FALSE;
1070               tui_make_visible (&TUI_CMD_WIN->generic);
1071             }
1072         }
1073       tui_set_current_layout_to (layout_type);
1074     }
1075 }