gdb/tui/tui-data.h

   1 /* TUI data manipulation routines.
   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 #ifndef TUI_TUI_DATA_H
  23 #define TUI_TUI_DATA_H
  24
  25 #include "tui/tui.h"    /* For enum tui_win_type.  */
  26 #include "gdb_curses.h" /* For WINDOW.  */
  27
  28 /* This is a point definition.  */
  29 struct tui_point
  30 {
  31   int x, y;
  32 };
  33
  34 struct tui_win_element;
  35
  36 /* This describes the content of the window.  */
  37 typedef struct tui_win_element **tui_win_content;
  38
  39 /* Generic window information.  */
  40 struct tui_gen_win_info
  41 {
  42   explicit tui_gen_win_info (enum tui_win_type t)
  43     : type (t)
  44   {
  45   }
  46
  47   virtual ~tui_gen_win_info ()
  48   {
  49   }
  50
  51   /* Call to refresh this window.  */
  52   virtual void refresh_window ();
  53
  54   /* Window handle.  */
  55   WINDOW *handle = nullptr;
  56   /* Type of window.  */
  57   enum tui_win_type type;
  58   /* Window width.  */
  59   int width = 0;
  60   /* Window height.  */
  61   int height = 0;
  62   /* Origin of window.  */
  63   struct tui_point origin = {0, 0};
  64   /* Content of window.  */
  65   tui_win_content content = nullptr;
  66   /* Size of content (# of elements).  */
  67   int content_size = 0;
  68   /* Can it be used, or is it already used?  */
  69   int content_in_use = FALSE;
  70   /* Viewport height.  */
  71   int viewport_height = 0;
  72   /* Index of last visible line.  */
  73   int last_visible_line = 0;
  74   /* Whether the window is visible or not.  */
  75   bool is_visible = false;
  76   /* Window title to display.  */
  77   char *title = nullptr;
  78 };
  79
  80 /* Constant definitions.  */
  81 #define DEFAULT_TAB_LEN         8
  82 #define NO_SRC_STRING           "[ No Source Available ]"
  83 #define NO_DISASSEM_STRING      "[ No Assembly Available ]"
  84 #define NO_REGS_STRING          "[ Register Values Unavailable ]"
  85 #define NO_DATA_STRING          "[ No Data Values Displayed ]"
  86 #define MAX_CONTENT_COUNT       100
  87 #define SRC_NAME                "src"
  88 #define CMD_NAME                "cmd"
  89 #define DATA_NAME               "regs"
  90 #define DISASSEM_NAME           "asm"
  91 #define TUI_NULL_STR            ""
  92 #define DEFAULT_HISTORY_COUNT   25
  93 #define BOX_WINDOW              TRUE
  94 #define DONT_BOX_WINDOW         FALSE
  95 #define HILITE                  TRUE
  96 #define NO_HILITE               FALSE
  97 #define WITH_LOCATOR            TRUE
  98 #define NO_LOCATOR              FALSE
  99 #define EMPTY_SOURCE_PROMPT     TRUE
 100 #define NO_EMPTY_SOURCE_PROMPT  FALSE
 101 #define UNDEFINED_ITEM          -1
 102 #define MIN_WIN_HEIGHT          3
 103 #define MIN_CMD_WIN_HEIGHT      3
 104
 105 /* Strings to display in the TUI status line.  */
 106 #define PROC_PREFIX             "In: "
 107 #define LINE_PREFIX             "L"
 108 #define PC_PREFIX               "PC: "
 109 #define SINGLE_KEY              "(SingleKey)"
 110
 111 /* Minimum/Maximum length of some fields displayed in the TUI status
 112    line.  */
 113 #define MIN_LINE_WIDTH     4    /* Use at least 4 digits for line
 114                                    numbers.  */
 115 #define MIN_PROC_WIDTH    12
 116 #define MAX_TARGET_WIDTH  10
 117 #define MAX_PID_WIDTH     19
 118
 119 /* Scroll direction enum.  */
 120 enum tui_scroll_direction
 121 {
 122   FORWARD_SCROLL,
 123   BACKWARD_SCROLL,
 124   LEFT_SCROLL,
 125   RIGHT_SCROLL
 126 };
 127
 128
 129 /* The kinds of layouts available.  */
 130 enum tui_layout_type
 131 {
 132   SRC_COMMAND,
 133   DISASSEM_COMMAND,
 134   SRC_DISASSEM_COMMAND,
 135   SRC_DATA_COMMAND,
 136   DISASSEM_DATA_COMMAND,
 137   UNDEFINED_LAYOUT
 138 };
 139
 140 /* Basic data types that can be displayed in the data window.  */
 141 enum tui_data_type
 142 {
 143   TUI_REGISTER,
 144   TUI_SCALAR,
 145   TUI_COMPLEX,
 146   TUI_STRUCT
 147 };
 148
 149 enum tui_line_or_address_kind
 150 {
 151   LOA_LINE,
 152   LOA_ADDRESS
 153 };
 154
 155 /* Structure describing source line or line address.  */
 156 struct tui_line_or_address
 157 {
 158   enum tui_line_or_address_kind loa;
 159   union
 160     {
 161       int line_no;
 162       CORE_ADDR addr;
 163     } u;
 164 };
 165
 166 /* Current Layout definition.  */
 167 struct tui_layout_def
 168 {
 169   enum tui_win_type display_mode;
 170   int split;
 171 };
 172
 173 /* Elements in the Source/Disassembly Window.  */
 174 struct tui_source_element
 175 {
 176   char *line;
 177   struct tui_line_or_address line_or_addr;
 178   int is_exec_point;
 179   int has_break;
 180 };
 181
 182
 183 /* Elements in the data display window content.  */
 184 struct tui_data_element
 185 {
 186   const char *name;
 187   int item_no;          /* The register number, or data display
 188                            number.  */
 189   enum tui_data_type type;
 190   void *value;
 191   int highlight;
 192   char *content;
 193 };
 194
 195
 196 /* Elements in the command window content.  */
 197 struct tui_command_element
 198 {
 199   char *line;
 200 };
 201
 202 #ifdef PATH_MAX
 203 # define MAX_LOCATOR_ELEMENT_LEN        PATH_MAX
 204 #else
 205 # define MAX_LOCATOR_ELEMENT_LEN        1024
 206 #endif
 207
 208 /* Elements in the locator window content.  */
 209 struct tui_locator_element
 210 {
 211   /* Resolved absolute filename as returned by symtab_to_fullname.  */
 212   char full_name[MAX_LOCATOR_ELEMENT_LEN];
 213   char proc_name[MAX_LOCATOR_ELEMENT_LEN];
 214   int line_no;
 215   CORE_ADDR addr;
 216   /* Architecture associated with code at this location.  */
 217   struct gdbarch *gdbarch;
 218 };
 219
 220 /* Flags to tell what kind of breakpoint is at current line.  */
 221 #define TUI_BP_ENABLED      0x01
 222 #define TUI_BP_DISABLED     0x02
 223 #define TUI_BP_HIT          0x04
 224 #define TUI_BP_CONDITIONAL  0x08
 225 #define TUI_BP_HARDWARE     0x10
 226
 227 /* Position of breakpoint markers in the exec info string.  */
 228 #define TUI_BP_HIT_POS      0
 229 #define TUI_BP_BREAK_POS    1
 230 #define TUI_EXEC_POS        2
 231 #define TUI_EXECINFO_SIZE   4
 232
 233 typedef char tui_exec_info_content[TUI_EXECINFO_SIZE];
 234
 235 /* An content element in a window.  */
 236 union tui_which_element
 237 {
 238   struct tui_source_element source;     /* The source elements.  */
 239   struct tui_gen_win_info *data_window; /* Data display elements.  */
 240   struct tui_data_element data;         /* Elements of data_window.  */
 241   struct tui_command_element command;   /* Command elements.  */
 242   struct tui_locator_element locator;   /* Locator elements.  */
 243   tui_exec_info_content simple_string;  /* Simple char based elements.  */
 244 };
 245
 246 struct tui_win_element
 247 {
 248   union tui_which_element which_element;
 249 };
 250
 251 /* This defines information about each logical window.  */
 252 struct tui_win_info : public tui_gen_win_info
 253 {
 254 protected:
 255
 256   explicit tui_win_info (enum tui_win_type type);
 257   DISABLE_COPY_AND_ASSIGN (tui_win_info);
 258
 259   /* Scroll the contents vertically.  This is only called via
 260      forward_scroll and backward_scroll.  */
 261   virtual void do_scroll_vertical (enum tui_scroll_direction,
 262                                    int num_to_scroll) = 0;
 263
 264   /* Scroll the contents horizontally.  This is only called via
 265      left_scroll and right_scroll.  */
 266   virtual void do_scroll_horizontal (enum tui_scroll_direction,
 267                                      int num_to_scroll) = 0;
 268
 269 public:
 270
 271   ~tui_win_info () override;
 272
 273   /* Clear the pertinent detail in the window.  */
 274   virtual void clear_detail () = 0;
 275
 276   /* Return true if this window has the locator.  */
 277   virtual bool has_locator () const
 278   {
 279     return false;
 280   }
 281
 282   /* Make this window visible or invisible.  */
 283   virtual void make_visible (bool visible);
 284
 285   /* Refresh this window and any associated windows.  */
 286   virtual void refresh ();
 287
 288   /* Called after all the TUI windows are refreshed, to let this
 289      window have a chance to update itself further.  */
 290   virtual void refresh_all ()
 291   {
 292   }
 293
 294   /* Called after a TUI window is given a new height; this updates any
 295      related auxiliary windows.  */
 296   virtual void set_new_height (int height)
 297   {
 298   }
 299
 300   /* Compute the maximum height of this window.  */
 301   virtual int max_height () const;
 302
 303   /* Set whether this window is highglighted.  */
 304   void set_highlight (bool highlight)
 305   {
 306     is_highlighted = highlight;
 307   }
 308
 309   /* Methods to scroll the contents of this window.  Note that they
 310      are named with "_scroll" coming at the end because the more
 311      obvious "scroll_forward" is defined as a macro in term.h.  */
 312   void forward_scroll (int num_to_scroll);
 313   void backward_scroll (int num_to_scroll);
 314   void left_scroll (int num_to_scroll);
 315   void right_scroll (int num_to_scroll);
 316
 317   /* Can this window ever be highlighted?  */
 318   bool can_highlight = false;
 319
 320   /* Is this window highlighted?  */
 321   bool is_highlighted = false;
 322 };
 323
 324 /* The base class for all source-like windows, namely the source and
 325    disassembly windows.  */
 326
 327 struct tui_source_window_base : public tui_win_info
 328 {
 329 protected:
 330   explicit tui_source_window_base (enum tui_win_type type);
 331   ~tui_source_window_base () override;
 332   DISABLE_COPY_AND_ASSIGN (tui_source_window_base);
 333
 334   void do_scroll_horizontal (enum tui_scroll_direction,
 335                              int num_to_scroll) override;
 336
 337 public:
 338
 339   void clear_detail () override;
 340
 341   /* Return true if this window has the locator.  */
 342   bool has_locator () const override
 343   {
 344     return m_has_locator;
 345   }
 346
 347   void make_visible (bool visible) override;
 348   void refresh () override;
 349   void refresh_all () override;
 350
 351   /* Refill the source window's source cache and update it.  If this
 352      is a disassembly window, then just update it.  */
 353   void refill ();
 354
 355   /* Set the location of the execution point.  */
 356   void set_is_exec_point_at (struct tui_line_or_address l);
 357
 358   void set_new_height (int height) override;
 359
 360   /* Does the locator belong to this window?  */
 361   bool m_has_locator = false;
 362   /* Execution information window.  */
 363   struct tui_gen_win_info *execution_info = nullptr;
 364   /* Used for horizontal scroll.  */
 365   int horizontal_offset = 0;
 366   struct tui_line_or_address start_line_or_addr;
 367
 368   /* It is the resolved form as returned by symtab_to_fullname.  */
 369   char *fullname = nullptr;
 370
 371   /* Architecture associated with code at this location.  */
 372   struct gdbarch *gdbarch = nullptr;
 373 };
 374
 375 /* A TUI source window.  */
 376
 377 struct tui_source_window : public tui_source_window_base
 378 {
 379   tui_source_window ()
 380     : tui_source_window_base (SRC_WIN)
 381   {
 382   }
 383
 384   DISABLE_COPY_AND_ASSIGN (tui_source_window);
 385
 386 protected:
 387
 388   void do_scroll_vertical (enum tui_scroll_direction,
 389                            int num_to_scroll) override;
 390 };
 391
 392 /* A TUI disassembly window.  */
 393
 394 struct tui_disasm_window : public tui_source_window_base
 395 {
 396   tui_disasm_window ()
 397     : tui_source_window_base (DISASSEM_WIN)
 398   {
 399   }
 400
 401   DISABLE_COPY_AND_ASSIGN (tui_disasm_window);
 402
 403 protected:
 404
 405   void do_scroll_vertical (enum tui_scroll_direction,
 406                            int num_to_scroll) override;
 407 };
 408
 409 struct tui_data_window : public tui_win_info
 410 {
 411   tui_data_window ()
 412     : tui_win_info (DATA_WIN)
 413   {
 414   }
 415
 416   ~tui_data_window () override;
 417   DISABLE_COPY_AND_ASSIGN (tui_data_window);
 418
 419   void clear_detail () override;
 420   void refresh_all () override;
 421
 422   void set_new_height (int height) override;
 423
 424   void refresh_window () override;
 425
 426   /* Start of data display content.  */
 427   tui_win_content data_content = NULL;
 428   int data_content_count = 0;
 429   /* Start of regs display content.  */
 430   tui_win_content regs_content = NULL;
 431   int regs_content_count = 0;
 432   int regs_column_count = 0;
 433   /* Should regs be displayed at all?  */
 434   bool display_regs = false;
 435   struct reggroup *current_group = nullptr;
 436
 437 protected:
 438
 439   void do_scroll_vertical (enum tui_scroll_direction,
 440                            int num_to_scroll) override;
 441   void do_scroll_horizontal (enum tui_scroll_direction,
 442                              int num_to_scroll) override
 443   {
 444   }
 445 };
 446
 447 struct tui_cmd_window : public tui_win_info
 448 {
 449   tui_cmd_window ()
 450     : tui_win_info (CMD_WIN)
 451   {
 452   }
 453
 454   DISABLE_COPY_AND_ASSIGN (tui_cmd_window);
 455
 456   void clear_detail () override;
 457
 458   void make_visible (bool visible) override
 459   {
 460   }
 461
 462   int max_height () const override;
 463
 464   void refresh_window () override
 465   {
 466   }
 467
 468   int start_line = 0;
 469
 470 protected:
 471
 472   void do_scroll_vertical (enum tui_scroll_direction,
 473                            int num_to_scroll) override
 474   {
 475   }
 476
 477   void do_scroll_horizontal (enum tui_scroll_direction,
 478                              int num_to_scroll) override
 479   {
 480   }
 481 };
 482
 483 extern int tui_win_is_auxillary (enum tui_win_type win_type);
 484
 485
 486 /* Global Data.  */
 487 extern struct tui_win_info *tui_win_list[MAX_MAJOR_WINDOWS];
 488
 489 #define TUI_SRC_WIN     ((tui_source_window_base *) tui_win_list[SRC_WIN])
 490 #define TUI_DISASM_WIN  ((tui_source_window_base *) tui_win_list[DISASSEM_WIN])
 491 #define TUI_DATA_WIN    ((tui_data_window *) tui_win_list[DATA_WIN])
 492 #define TUI_CMD_WIN     ((tui_cmd_window *) tui_win_list[CMD_WIN])
 493
 494 /* Data Manipulation Functions.  */
 495 extern void tui_initialize_static_data (void);
 496 extern struct tui_win_info *tui_alloc_win_info (enum tui_win_type);
 497 extern void tui_init_generic_part (struct tui_gen_win_info *);
 498 extern tui_win_content tui_alloc_content (int, enum tui_win_type);
 499 extern int tui_add_content_elements (struct tui_gen_win_info *,
 500                                      int);
 501 extern void tui_free_win_content (struct tui_gen_win_info *);
 502 extern void tui_free_data_content (tui_win_content, int);
 503 extern void tui_free_all_source_wins_content (void);
 504 extern struct tui_win_info *tui_partial_win_by_name (const char *);
 505 extern const char *tui_win_name (const struct tui_gen_win_info *);
 506 extern enum tui_layout_type tui_current_layout (void);
 507 extern void tui_set_current_layout_to (enum tui_layout_type);
 508 extern int tui_term_height (void);
 509 extern void tui_set_term_height_to (int);
 510 extern int tui_term_width (void);
 511 extern void tui_set_term_width_to (int);
 512 extern struct tui_gen_win_info *tui_locator_win_info_ptr (void);
 513 extern struct tui_gen_win_info *tui_source_exec_info_win_ptr (void);
 514 extern struct tui_gen_win_info *tui_disassem_exec_info_win_ptr (void);
 515 extern std::vector<tui_source_window_base *> &tui_source_windows ();
 516 extern void tui_clear_source_windows (void);
 517 extern void tui_clear_source_windows_detail (void);
 518 extern void tui_add_to_source_windows (struct tui_source_window_base *);
 519 extern struct tui_win_info *tui_win_with_focus (void);
 520 extern void tui_set_win_with_focus (struct tui_win_info *);
 521 extern struct tui_layout_def *tui_layout_def (void);
 522 extern int tui_win_resized (void);
 523 extern void tui_set_win_resized_to (int);
 524
 525 extern struct tui_win_info *tui_next_win (struct tui_win_info *);
 526 extern struct tui_win_info *tui_prev_win (struct tui_win_info *);
 527
 528 extern unsigned int tui_tab_width;
 529
 530 #endif /* TUI_TUI_DATA_H */