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