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   /* Methods to scroll the contents of this window.  Note that they
 265      are named with "_scroll" coming at the end because the more
 266      obvious "scroll_forward" is defined as a macro in term.h.  */
 267   void forward_scroll (int num_to_scroll);
 268   void backward_scroll (int num_to_scroll);
 269   void left_scroll (int num_to_scroll);
 270   void right_scroll (int num_to_scroll);
 271
 272   struct tui_gen_win_info generic;      /* General window information.  */
 273
 274   /* Can this window ever be highlighted?  */
 275   int can_highlight = 0;
 276
 277   /* Is this window highlighted?  */
 278   int is_highlighted = 0;
 279 };
 280
 281 /* The base class for all source-like windows, namely the source and
 282    disassembly windows.  */
 283
 284 struct tui_source_window_base : public tui_win_info
 285 {
 286 protected:
 287   explicit tui_source_window_base (enum tui_win_type type);
 288   ~tui_source_window_base () override;
 289   DISABLE_COPY_AND_ASSIGN (tui_source_window_base);
 290
 291   void do_scroll_horizontal (enum tui_scroll_direction,
 292                              int num_to_scroll) override;
 293
 294 public:
 295
 296   void clear_detail () override;
 297
 298   /* Return true if this window has the locator.  */
 299   bool has_locator () const override
 300   {
 301     return m_has_locator;
 302   }
 303
 304   void make_visible (bool visible) override;
 305   void refresh () override;
 306
 307   /* Refill the source window's source cache and update it.  If this
 308      is a disassembly window, then just update it.  */
 309   void refill ();
 310
 311   /* Set the location of the execution point.  */
 312   void set_is_exec_point_at (struct tui_line_or_address l);
 313
 314   /* Does the locator belong to this window?  */
 315   bool m_has_locator = false;
 316   /* Execution information window.  */
 317   struct tui_gen_win_info *execution_info = nullptr;
 318   /* Used for horizontal scroll.  */
 319   int horizontal_offset = 0;
 320   struct tui_line_or_address start_line_or_addr;
 321
 322   /* It is the resolved form as returned by symtab_to_fullname.  */
 323   char *fullname = nullptr;
 324
 325   /* Architecture associated with code at this location.  */
 326   struct gdbarch *gdbarch = nullptr;
 327 };
 328
 329 /* A TUI source window.  */
 330
 331 struct tui_source_window : public tui_source_window_base
 332 {
 333   tui_source_window ()
 334     : tui_source_window_base (SRC_WIN)
 335   {
 336   }
 337
 338   DISABLE_COPY_AND_ASSIGN (tui_source_window);
 339
 340 protected:
 341
 342   void do_scroll_vertical (enum tui_scroll_direction,
 343                            int num_to_scroll) override;
 344 };
 345
 346 /* A TUI disassembly window.  */
 347
 348 struct tui_disasm_window : public tui_source_window_base
 349 {
 350   tui_disasm_window ()
 351     : tui_source_window_base (DISASSEM_WIN)
 352   {
 353   }
 354
 355   DISABLE_COPY_AND_ASSIGN (tui_disasm_window);
 356
 357 protected:
 358
 359   void do_scroll_vertical (enum tui_scroll_direction,
 360                            int num_to_scroll) override;
 361 };
 362
 363 struct tui_data_window : public tui_win_info
 364 {
 365   tui_data_window ()
 366     : tui_win_info (DATA_WIN)
 367   {
 368   }
 369
 370   ~tui_data_window () override;
 371   DISABLE_COPY_AND_ASSIGN (tui_data_window);
 372
 373   void clear_detail () override;
 374
 375   /* Start of data display content.  */
 376   tui_win_content data_content = NULL;
 377   int data_content_count = 0;
 378   /* Start of regs display content.  */
 379   tui_win_content regs_content = NULL;
 380   int regs_content_count = 0;
 381   int regs_column_count = 0;
 382   /* Should regs be displayed at all?  */
 383   bool display_regs = false;
 384   struct reggroup *current_group = nullptr;
 385
 386 protected:
 387
 388   void do_scroll_vertical (enum tui_scroll_direction,
 389                            int num_to_scroll) override;
 390   void do_scroll_horizontal (enum tui_scroll_direction,
 391                              int num_to_scroll) override
 392   {
 393   }
 394 };
 395
 396 struct tui_cmd_window : public tui_win_info
 397 {
 398   tui_cmd_window ()
 399     : tui_win_info (CMD_WIN)
 400   {
 401   }
 402
 403   DISABLE_COPY_AND_ASSIGN (tui_cmd_window);
 404
 405   void clear_detail () override;
 406
 407   void make_visible (bool visible) override
 408   {
 409   }
 410
 411   int start_line = 0;
 412
 413 protected:
 414
 415   void do_scroll_vertical (enum tui_scroll_direction,
 416                            int num_to_scroll) override
 417   {
 418   }
 419
 420   void do_scroll_horizontal (enum tui_scroll_direction,
 421                              int num_to_scroll) override
 422   {
 423   }
 424 };
 425
 426 extern int tui_win_is_auxillary (enum tui_win_type win_type);
 427 extern void tui_set_win_highlight (struct tui_win_info *win_info,
 428                                    int highlight);
 429
 430
 431 /* Global Data.  */
 432 extern struct tui_win_info *tui_win_list[MAX_MAJOR_WINDOWS];
 433
 434 #define TUI_SRC_WIN     ((tui_source_window_base *) tui_win_list[SRC_WIN])
 435 #define TUI_DISASM_WIN  ((tui_source_window_base *) tui_win_list[DISASSEM_WIN])
 436 #define TUI_DATA_WIN    ((tui_data_window *) tui_win_list[DATA_WIN])
 437 #define TUI_CMD_WIN     ((tui_cmd_window *) tui_win_list[CMD_WIN])
 438
 439 /* Data Manipulation Functions.  */
 440 extern void tui_initialize_static_data (void);
 441 extern struct tui_gen_win_info *tui_alloc_generic_win_info (void);
 442 extern struct tui_win_info *tui_alloc_win_info (enum tui_win_type);
 443 extern void tui_init_generic_part (struct tui_gen_win_info *);
 444 extern tui_win_content tui_alloc_content (int, enum tui_win_type);
 445 extern int tui_add_content_elements (struct tui_gen_win_info *,
 446                                      int);
 447 extern void tui_free_win_content (struct tui_gen_win_info *);
 448 extern void tui_free_data_content (tui_win_content, int);
 449 extern void tui_free_all_source_wins_content (void);
 450 extern struct tui_win_info *tui_partial_win_by_name (const char *);
 451 extern const char *tui_win_name (const struct tui_gen_win_info *);
 452 extern enum tui_layout_type tui_current_layout (void);
 453 extern void tui_set_current_layout_to (enum tui_layout_type);
 454 extern int tui_term_height (void);
 455 extern void tui_set_term_height_to (int);
 456 extern int tui_term_width (void);
 457 extern void tui_set_term_width_to (int);
 458 extern struct tui_gen_win_info *tui_locator_win_info_ptr (void);
 459 extern struct tui_gen_win_info *tui_source_exec_info_win_ptr (void);
 460 extern struct tui_gen_win_info *tui_disassem_exec_info_win_ptr (void);
 461 extern std::vector<tui_source_window_base *> &tui_source_windows ();
 462 extern void tui_clear_source_windows (void);
 463 extern void tui_clear_source_windows_detail (void);
 464 extern void tui_add_to_source_windows (struct tui_source_window_base *);
 465 extern struct tui_win_info *tui_win_with_focus (void);
 466 extern void tui_set_win_with_focus (struct tui_win_info *);
 467 extern struct tui_layout_def *tui_layout_def (void);
 468 extern int tui_win_resized (void);
 469 extern void tui_set_win_resized_to (int);
 470
 471 extern struct tui_win_info *tui_next_win (struct tui_win_info *);
 472 extern struct tui_win_info *tui_prev_win (struct tui_win_info *);
 473
 474 extern unsigned int tui_tab_width;
 475
 476 #endif /* TUI_TUI_DATA_H */