| 1 | /* TUI display registers in window. |
| 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 "tui/tui.h" |
| 25 | #include "tui/tui-data.h" |
| 26 | #include "symtab.h" |
| 27 | #include "gdbtypes.h" |
| 28 | #include "gdbcmd.h" |
| 29 | #include "frame.h" |
| 30 | #include "regcache.h" |
| 31 | #include "inferior.h" |
| 32 | #include "target.h" |
| 33 | #include "tui/tui-layout.h" |
| 34 | #include "tui/tui-win.h" |
| 35 | #include "tui/tui-wingeneral.h" |
| 36 | #include "tui/tui-file.h" |
| 37 | #include "tui/tui-regs.h" |
| 38 | #include "tui/tui-io.h" |
| 39 | #include "reggroups.h" |
| 40 | #include "valprint.h" |
| 41 | #include "completer.h" |
| 42 | |
| 43 | #include "gdb_curses.h" |
| 44 | |
| 45 | static void tui_display_register (struct tui_data_item_window *data); |
| 46 | |
| 47 | static void tui_show_register_group (tui_data_window *win_info, |
| 48 | struct reggroup *group, |
| 49 | struct frame_info *frame, |
| 50 | int refresh_values_only); |
| 51 | |
| 52 | /* Get the register from the frame and return a printable |
| 53 | representation of it. */ |
| 54 | |
| 55 | static char * |
| 56 | tui_register_format (struct frame_info *frame, int regnum) |
| 57 | { |
| 58 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 59 | |
| 60 | string_file stream; |
| 61 | |
| 62 | scoped_restore save_pagination |
| 63 | = make_scoped_restore (&pagination_enabled, 0); |
| 64 | scoped_restore save_stdout |
| 65 | = make_scoped_restore (&gdb_stdout, &stream); |
| 66 | |
| 67 | gdbarch_print_registers_info (gdbarch, &stream, frame, regnum, 1); |
| 68 | |
| 69 | /* Remove the possible \n. */ |
| 70 | std::string &str = stream.string (); |
| 71 | if (!str.empty () && str.back () == '\n') |
| 72 | str.resize (str.size () - 1); |
| 73 | |
| 74 | /* Expand tabs into spaces, since ncurses on MS-Windows doesn't. */ |
| 75 | return tui_expand_tabs (str.c_str (), 0); |
| 76 | } |
| 77 | |
| 78 | /* Get the register value from the given frame and format it for the |
| 79 | display. When changep is set, check if the new register value has |
| 80 | changed with respect to the previous call. */ |
| 81 | static void |
| 82 | tui_get_register (struct frame_info *frame, |
| 83 | struct tui_data_item_window *data, |
| 84 | int regnum, bool *changedp) |
| 85 | { |
| 86 | if (changedp) |
| 87 | *changedp = false; |
| 88 | if (target_has_registers) |
| 89 | { |
| 90 | char *prev_content = data->content; |
| 91 | |
| 92 | data->content = tui_register_format (frame, regnum); |
| 93 | |
| 94 | if (changedp != NULL |
| 95 | && strcmp (prev_content, data->content) != 0) |
| 96 | *changedp = true; |
| 97 | |
| 98 | xfree (prev_content); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | /* See tui-regs.h. */ |
| 103 | |
| 104 | tui_data_item_window::~tui_data_item_window () |
| 105 | { |
| 106 | xfree (content); |
| 107 | } |
| 108 | |
| 109 | /* See tui-regs.h. */ |
| 110 | |
| 111 | int |
| 112 | tui_data_window::last_regs_line_no () const |
| 113 | { |
| 114 | int num_lines = (-1); |
| 115 | |
| 116 | if (!regs_content.empty ()) |
| 117 | { |
| 118 | num_lines = regs_content.size () / regs_column_count; |
| 119 | if (regs_content.size () % regs_column_count) |
| 120 | num_lines++; |
| 121 | } |
| 122 | return num_lines; |
| 123 | } |
| 124 | |
| 125 | /* See tui-regs.h. */ |
| 126 | |
| 127 | int |
| 128 | tui_data_window::line_from_reg_element_no (int element_no) const |
| 129 | { |
| 130 | if (element_no < regs_content.size ()) |
| 131 | { |
| 132 | int i, line = (-1); |
| 133 | |
| 134 | i = 1; |
| 135 | while (line == (-1)) |
| 136 | { |
| 137 | if (element_no < regs_column_count * i) |
| 138 | line = i - 1; |
| 139 | else |
| 140 | i++; |
| 141 | } |
| 142 | |
| 143 | return line; |
| 144 | } |
| 145 | else |
| 146 | return (-1); |
| 147 | } |
| 148 | |
| 149 | /* See tui-regs.h. */ |
| 150 | |
| 151 | int |
| 152 | tui_data_window::first_reg_element_no_inline (int line_no) const |
| 153 | { |
| 154 | if (line_no * regs_column_count <= regs_content.size ()) |
| 155 | return ((line_no + 1) * regs_column_count) - regs_column_count; |
| 156 | else |
| 157 | return (-1); |
| 158 | } |
| 159 | |
| 160 | /* A helper function to display the register window in the appropriate |
| 161 | way. */ |
| 162 | |
| 163 | static void |
| 164 | tui_reg_layout () |
| 165 | { |
| 166 | enum tui_layout_type cur_layout = tui_current_layout (); |
| 167 | enum tui_layout_type new_layout; |
| 168 | if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND) |
| 169 | new_layout = SRC_DATA_COMMAND; |
| 170 | else |
| 171 | new_layout = DISASSEM_DATA_COMMAND; |
| 172 | tui_set_layout (new_layout); |
| 173 | } |
| 174 | |
| 175 | /* Show the registers of the given group in the data window |
| 176 | and refresh the window. */ |
| 177 | void |
| 178 | tui_show_registers (struct reggroup *group) |
| 179 | { |
| 180 | /* Make sure the curses mode is enabled. */ |
| 181 | tui_enable (); |
| 182 | |
| 183 | /* Make sure the register window is visible. If not, select an |
| 184 | appropriate layout. */ |
| 185 | if (TUI_DATA_WIN == NULL || !TUI_DATA_WIN->is_visible ()) |
| 186 | tui_reg_layout (); |
| 187 | |
| 188 | if (group == 0) |
| 189 | group = general_reggroup; |
| 190 | |
| 191 | /* Say that registers should be displayed, even if there is a |
| 192 | problem. */ |
| 193 | TUI_DATA_WIN->display_regs = true; |
| 194 | |
| 195 | if (target_has_registers && target_has_stack && target_has_memory) |
| 196 | { |
| 197 | tui_show_register_group (TUI_DATA_WIN, group, get_selected_frame (NULL), |
| 198 | group == TUI_DATA_WIN->current_group); |
| 199 | |
| 200 | /* Clear all notation of changed values. */ |
| 201 | for (auto &&data_item_win : TUI_DATA_WIN->regs_content) |
| 202 | { |
| 203 | if (data_item_win != nullptr) |
| 204 | data_item_win->highlight = false; |
| 205 | } |
| 206 | TUI_DATA_WIN->current_group = group; |
| 207 | TUI_DATA_WIN->display_all_data (); |
| 208 | } |
| 209 | else |
| 210 | { |
| 211 | TUI_DATA_WIN->current_group = 0; |
| 212 | TUI_DATA_WIN->erase_data_content (_("[ Register Values Unavailable ]")); |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | |
| 217 | /* Set the data window to display the registers of the register group |
| 218 | using the given frame. Values are refreshed only when |
| 219 | refresh_values_only is TRUE. */ |
| 220 | |
| 221 | static void |
| 222 | tui_show_register_group (tui_data_window *win_info, |
| 223 | struct reggroup *group, |
| 224 | struct frame_info *frame, |
| 225 | int refresh_values_only) |
| 226 | { |
| 227 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 228 | int nr_regs; |
| 229 | int regnum, pos; |
| 230 | char title[80]; |
| 231 | |
| 232 | /* Make a new title showing which group we display. */ |
| 233 | snprintf (title, sizeof (title) - 1, "Register group: %s", |
| 234 | reggroup_name (group)); |
| 235 | xfree (win_info->title); |
| 236 | win_info->title = xstrdup (title); |
| 237 | |
| 238 | /* See how many registers must be displayed. */ |
| 239 | nr_regs = 0; |
| 240 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
| 241 | { |
| 242 | const char *name; |
| 243 | |
| 244 | /* Must be in the group. */ |
| 245 | if (!gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
| 246 | continue; |
| 247 | |
| 248 | /* If the register name is empty, it is undefined for this |
| 249 | processor, so don't display anything. */ |
| 250 | name = gdbarch_register_name (gdbarch, regnum); |
| 251 | if (name == 0 || *name == '\0') |
| 252 | continue; |
| 253 | |
| 254 | nr_regs++; |
| 255 | } |
| 256 | |
| 257 | if (!refresh_values_only) |
| 258 | win_info->regs_content.clear (); |
| 259 | |
| 260 | if (nr_regs < win_info->regs_content.size ()) |
| 261 | win_info->regs_content.resize (nr_regs); |
| 262 | else |
| 263 | { |
| 264 | for (int i = win_info->regs_content.size (); i < nr_regs; ++i) |
| 265 | win_info->regs_content.emplace_back (new tui_data_item_window ()); |
| 266 | } |
| 267 | |
| 268 | /* Now set the register names and values. */ |
| 269 | pos = 0; |
| 270 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
| 271 | { |
| 272 | struct tui_data_item_window *data_item_win; |
| 273 | const char *name; |
| 274 | |
| 275 | /* Must be in the group. */ |
| 276 | if (!gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
| 277 | continue; |
| 278 | |
| 279 | /* If the register name is empty, it is undefined for this |
| 280 | processor, so don't display anything. */ |
| 281 | name = gdbarch_register_name (gdbarch, regnum); |
| 282 | if (name == 0 || *name == '\0') |
| 283 | continue; |
| 284 | |
| 285 | data_item_win = win_info->regs_content[pos].get (); |
| 286 | if (data_item_win) |
| 287 | { |
| 288 | if (!refresh_values_only) |
| 289 | { |
| 290 | data_item_win->item_no = regnum; |
| 291 | data_item_win->name = name; |
| 292 | data_item_win->highlight = false; |
| 293 | } |
| 294 | tui_get_register (frame, data_item_win, regnum, 0); |
| 295 | } |
| 296 | pos++; |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | /* See tui-regs.h. */ |
| 301 | |
| 302 | void |
| 303 | tui_data_window::display_registers_from (int start_element_no) |
| 304 | { |
| 305 | if (!regs_content.empty ()) |
| 306 | { |
| 307 | int j, item_win_width, cur_y; |
| 308 | |
| 309 | int max_len = 0; |
| 310 | for (auto &&data_item_win : regs_content) |
| 311 | { |
| 312 | char *p; |
| 313 | int len; |
| 314 | |
| 315 | len = 0; |
| 316 | p = data_item_win->content; |
| 317 | if (p != 0) |
| 318 | while (*p) |
| 319 | { |
| 320 | if (*p++ == '\t') |
| 321 | len = 8 * ((len / 8) + 1); |
| 322 | else |
| 323 | len++; |
| 324 | } |
| 325 | |
| 326 | if (len > max_len) |
| 327 | max_len = len; |
| 328 | } |
| 329 | item_win_width = max_len + 1; |
| 330 | int i = start_element_no; |
| 331 | |
| 332 | regs_column_count = (width - 2) / item_win_width; |
| 333 | if (regs_column_count == 0) |
| 334 | regs_column_count = 1; |
| 335 | item_win_width = (width - 2) / regs_column_count; |
| 336 | |
| 337 | /* Now create each data "sub" window, and write the display into |
| 338 | it. */ |
| 339 | cur_y = 1; |
| 340 | while (i < regs_content.size () |
| 341 | && cur_y <= viewport_height) |
| 342 | { |
| 343 | for (j = 0; |
| 344 | j < regs_column_count && i < regs_content.size (); |
| 345 | j++) |
| 346 | { |
| 347 | struct tui_data_item_window *data_item_win; |
| 348 | |
| 349 | /* Create the window if necessary. */ |
| 350 | data_item_win = regs_content[i].get (); |
| 351 | if (data_item_win->handle != NULL |
| 352 | && (data_item_win->height != 1 |
| 353 | || data_item_win->width != item_win_width |
| 354 | || data_item_win->origin.x != (item_win_width * j) + 1 |
| 355 | || data_item_win->origin.y != cur_y)) |
| 356 | { |
| 357 | tui_delete_win (data_item_win->handle); |
| 358 | data_item_win->handle = 0; |
| 359 | } |
| 360 | |
| 361 | if (data_item_win->handle == NULL) |
| 362 | { |
| 363 | data_item_win->height = 1; |
| 364 | data_item_win->width = item_win_width; |
| 365 | data_item_win->origin.x = (item_win_width * j) + 1; |
| 366 | data_item_win->origin.y = cur_y; |
| 367 | tui_make_window (data_item_win); |
| 368 | scrollok (data_item_win->handle, FALSE); |
| 369 | } |
| 370 | touchwin (data_item_win->handle); |
| 371 | |
| 372 | /* Get the printable representation of the register |
| 373 | and display it. */ |
| 374 | tui_display_register (data_item_win); |
| 375 | i++; /* Next register. */ |
| 376 | } |
| 377 | cur_y++; /* Next row. */ |
| 378 | } |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | /* See tui-regs.h. */ |
| 383 | |
| 384 | void |
| 385 | tui_data_window::display_reg_element_at_line (int start_element_no, |
| 386 | int start_line_no) |
| 387 | { |
| 388 | if (!regs_content.empty ()) |
| 389 | { |
| 390 | int element_no = start_element_no; |
| 391 | |
| 392 | if (start_element_no != 0 && start_line_no != 0) |
| 393 | { |
| 394 | int last_line_no, first_line_on_last_page; |
| 395 | |
| 396 | last_line_no = last_regs_line_no (); |
| 397 | first_line_on_last_page = last_line_no - (height - 2); |
| 398 | if (first_line_on_last_page < 0) |
| 399 | first_line_on_last_page = 0; |
| 400 | |
| 401 | /* If the element_no causes us to scroll past the end of the |
| 402 | registers, adjust what element to really start the |
| 403 | display at. */ |
| 404 | if (start_line_no > first_line_on_last_page) |
| 405 | element_no = first_reg_element_no_inline (first_line_on_last_page); |
| 406 | } |
| 407 | display_registers_from (element_no); |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | /* See tui-regs.h. */ |
| 412 | |
| 413 | int |
| 414 | tui_data_window::display_registers_from_line (int line_no) |
| 415 | { |
| 416 | check_and_display_highlight_if_needed (); |
| 417 | if (!regs_content.empty ()) |
| 418 | { |
| 419 | int element_no; |
| 420 | |
| 421 | if (line_no < 0) |
| 422 | line_no = 0; |
| 423 | else |
| 424 | { |
| 425 | /* Make sure that we don't display off the end of the |
| 426 | registers. */ |
| 427 | if (line_no >= last_regs_line_no ()) |
| 428 | { |
| 429 | line_no = line_from_reg_element_no (regs_content.size () - 1); |
| 430 | if (line_no < 0) |
| 431 | line_no = 0; |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | element_no = first_reg_element_no_inline (line_no); |
| 436 | if (element_no < regs_content.size ()) |
| 437 | display_reg_element_at_line (element_no, line_no); |
| 438 | else |
| 439 | line_no = (-1); |
| 440 | |
| 441 | return line_no; |
| 442 | } |
| 443 | |
| 444 | return (-1); /* Nothing was displayed. */ |
| 445 | } |
| 446 | |
| 447 | |
| 448 | /* Answer the index first element displayed. If none are displayed, |
| 449 | then return (-1). */ |
| 450 | int |
| 451 | tui_data_window::first_data_item_displayed () |
| 452 | { |
| 453 | for (int i = 0; i < regs_content.size (); i++) |
| 454 | { |
| 455 | struct tui_gen_win_info *data_item_win; |
| 456 | |
| 457 | data_item_win = regs_content[i].get (); |
| 458 | if (data_item_win->is_visible ()) |
| 459 | return i; |
| 460 | } |
| 461 | |
| 462 | return -1; |
| 463 | } |
| 464 | |
| 465 | /* See tui-regs.h. */ |
| 466 | |
| 467 | void |
| 468 | tui_data_window::delete_data_content_windows () |
| 469 | { |
| 470 | for (auto &&win : regs_content) |
| 471 | { |
| 472 | tui_delete_win (win->handle); |
| 473 | win->handle = NULL; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | |
| 478 | void |
| 479 | tui_data_window::erase_data_content (const char *prompt) |
| 480 | { |
| 481 | werase (handle); |
| 482 | check_and_display_highlight_if_needed (); |
| 483 | if (prompt != NULL) |
| 484 | { |
| 485 | int half_width = (width - 2) / 2; |
| 486 | int x_pos; |
| 487 | |
| 488 | if (strlen (prompt) >= half_width) |
| 489 | x_pos = 1; |
| 490 | else |
| 491 | x_pos = half_width - strlen (prompt); |
| 492 | mvwaddstr (handle, (height / 2), x_pos, (char *) prompt); |
| 493 | } |
| 494 | wrefresh (handle); |
| 495 | } |
| 496 | |
| 497 | /* See tui-regs.h. */ |
| 498 | |
| 499 | void |
| 500 | tui_data_window::display_all_data () |
| 501 | { |
| 502 | if (regs_content.empty ()) |
| 503 | erase_data_content (NO_DATA_STRING); |
| 504 | else |
| 505 | { |
| 506 | erase_data_content (NULL); |
| 507 | delete_data_content_windows (); |
| 508 | check_and_display_highlight_if_needed (); |
| 509 | display_registers_from (0); |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | |
| 514 | /* Function to redisplay the contents of the data window. */ |
| 515 | void |
| 516 | tui_data_window::refresh_all () |
| 517 | { |
| 518 | erase_data_content (NULL); |
| 519 | if (!regs_content.empty ()) |
| 520 | { |
| 521 | int first_element = first_data_item_displayed (); |
| 522 | |
| 523 | if (first_element >= 0) /* Re-use existing windows. */ |
| 524 | { |
| 525 | int first_line = (-1); |
| 526 | |
| 527 | if (first_element < regs_content.size ()) |
| 528 | first_line = line_from_reg_element_no (first_element); |
| 529 | |
| 530 | if (first_line >= 0) |
| 531 | { |
| 532 | erase_data_content (NULL); |
| 533 | display_registers_from_line (first_line); |
| 534 | } |
| 535 | } |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | |
| 540 | /* Scroll the data window vertically forward or backward. */ |
| 541 | void |
| 542 | tui_data_window::do_scroll_vertical (int num_to_scroll) |
| 543 | { |
| 544 | int first_element_no; |
| 545 | int first_line = (-1); |
| 546 | |
| 547 | first_element_no = first_data_item_displayed (); |
| 548 | if (first_element_no < regs_content.size ()) |
| 549 | first_line = line_from_reg_element_no (first_element_no); |
| 550 | else |
| 551 | { /* Calculate the first line from the element number which is in |
| 552 | the general data content. */ |
| 553 | } |
| 554 | |
| 555 | if (first_line >= 0) |
| 556 | { |
| 557 | first_line += num_to_scroll; |
| 558 | erase_data_content (NULL); |
| 559 | delete_data_content_windows (); |
| 560 | display_registers_from_line (first_line); |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | /* See tui-regs.h. */ |
| 565 | |
| 566 | void |
| 567 | tui_data_window::rerender () |
| 568 | { |
| 569 | /* Delete all data item windows. */ |
| 570 | for (auto &&win : regs_content) |
| 571 | { |
| 572 | tui_delete_win (win->handle); |
| 573 | win->handle = NULL; |
| 574 | } |
| 575 | display_all_data (); |
| 576 | } |
| 577 | |
| 578 | /* See tui-regs.h. */ |
| 579 | |
| 580 | void |
| 581 | tui_data_window::refresh_window () |
| 582 | { |
| 583 | tui_gen_win_info::refresh_window (); |
| 584 | for (auto &&win : regs_content) |
| 585 | { |
| 586 | if (win != NULL) |
| 587 | win->refresh_window (); |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | /* This function check all displayed registers for changes in values, |
| 592 | given a particular frame. If the values have changed, they are |
| 593 | updated with the new value and highlighted. */ |
| 594 | void |
| 595 | tui_check_register_values (struct frame_info *frame) |
| 596 | { |
| 597 | if (TUI_DATA_WIN != NULL |
| 598 | && TUI_DATA_WIN->is_visible ()) |
| 599 | { |
| 600 | if (TUI_DATA_WIN->regs_content.empty () |
| 601 | && TUI_DATA_WIN->display_regs) |
| 602 | tui_show_registers (TUI_DATA_WIN->current_group); |
| 603 | else |
| 604 | { |
| 605 | for (auto &&data_item_win_ptr : TUI_DATA_WIN->regs_content) |
| 606 | { |
| 607 | int was_hilighted; |
| 608 | |
| 609 | was_hilighted = data_item_win_ptr->highlight; |
| 610 | |
| 611 | tui_get_register (frame, data_item_win_ptr.get (), |
| 612 | data_item_win_ptr->item_no, |
| 613 | &data_item_win_ptr->highlight); |
| 614 | |
| 615 | if (data_item_win_ptr->highlight || was_hilighted) |
| 616 | tui_display_register (data_item_win_ptr.get ()); |
| 617 | } |
| 618 | } |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | /* Display a register in a window. If hilite is TRUE, then the value |
| 623 | will be displayed in reverse video. */ |
| 624 | static void |
| 625 | tui_display_register (struct tui_data_item_window *data) |
| 626 | { |
| 627 | if (data->handle != NULL) |
| 628 | { |
| 629 | int i; |
| 630 | |
| 631 | if (data->highlight) |
| 632 | /* We ignore the return value, casting it to void in order to avoid |
| 633 | a compiler warning. The warning itself was introduced by a patch |
| 634 | to ncurses 5.7 dated 2009-08-29, changing this macro to expand |
| 635 | to code that causes the compiler to generate an unused-value |
| 636 | warning. */ |
| 637 | (void) wstandout (data->handle); |
| 638 | |
| 639 | wmove (data->handle, 0, 0); |
| 640 | for (i = 1; i < data->width; i++) |
| 641 | waddch (data->handle, ' '); |
| 642 | wmove (data->handle, 0, 0); |
| 643 | if (data->content) |
| 644 | waddstr (data->handle, data->content); |
| 645 | |
| 646 | if (data->highlight) |
| 647 | /* We ignore the return value, casting it to void in order to avoid |
| 648 | a compiler warning. The warning itself was introduced by a patch |
| 649 | to ncurses 5.7 dated 2009-08-29, changing this macro to expand |
| 650 | to code that causes the compiler to generate an unused-value |
| 651 | warning. */ |
| 652 | (void) wstandend (data->handle); |
| 653 | data->refresh_window (); |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | /* Helper for "tui reg next", wraps a call to REGGROUP_NEXT, but adds wrap |
| 658 | around behaviour. Returns the next register group, or NULL if the |
| 659 | register window is not currently being displayed. */ |
| 660 | |
| 661 | static struct reggroup * |
| 662 | tui_reg_next (struct reggroup *current_group, struct gdbarch *gdbarch) |
| 663 | { |
| 664 | struct reggroup *group = NULL; |
| 665 | |
| 666 | if (current_group != NULL) |
| 667 | { |
| 668 | group = reggroup_next (gdbarch, current_group); |
| 669 | if (group == NULL) |
| 670 | group = reggroup_next (gdbarch, NULL); |
| 671 | } |
| 672 | return group; |
| 673 | } |
| 674 | |
| 675 | /* Helper for "tui reg prev", wraps a call to REGGROUP_PREV, but adds wrap |
| 676 | around behaviour. Returns the previous register group, or NULL if the |
| 677 | register window is not currently being displayed. */ |
| 678 | |
| 679 | static struct reggroup * |
| 680 | tui_reg_prev (struct reggroup *current_group, struct gdbarch *gdbarch) |
| 681 | { |
| 682 | struct reggroup *group = NULL; |
| 683 | |
| 684 | if (current_group != NULL) |
| 685 | { |
| 686 | group = reggroup_prev (gdbarch, current_group); |
| 687 | if (group == NULL) |
| 688 | group = reggroup_prev (gdbarch, NULL); |
| 689 | } |
| 690 | return group; |
| 691 | } |
| 692 | |
| 693 | /* Implement the 'tui reg' command. Changes the register group displayed |
| 694 | in the tui register window. Displays the tui register window if it is |
| 695 | not already on display. */ |
| 696 | |
| 697 | static void |
| 698 | tui_reg_command (const char *args, int from_tty) |
| 699 | { |
| 700 | struct gdbarch *gdbarch = get_current_arch (); |
| 701 | |
| 702 | if (args != NULL) |
| 703 | { |
| 704 | struct reggroup *group, *match = NULL; |
| 705 | size_t len = strlen (args); |
| 706 | |
| 707 | /* Make sure the curses mode is enabled. */ |
| 708 | tui_enable (); |
| 709 | |
| 710 | /* Make sure the register window is visible. If not, select an |
| 711 | appropriate layout. We need to do this before trying to run the |
| 712 | 'next' or 'prev' commands. */ |
| 713 | if (TUI_DATA_WIN == NULL || !TUI_DATA_WIN->is_visible ()) |
| 714 | tui_reg_layout (); |
| 715 | |
| 716 | struct reggroup *current_group = TUI_DATA_WIN->current_group; |
| 717 | if (strncmp (args, "next", len) == 0) |
| 718 | match = tui_reg_next (current_group, gdbarch); |
| 719 | else if (strncmp (args, "prev", len) == 0) |
| 720 | match = tui_reg_prev (current_group, gdbarch); |
| 721 | |
| 722 | /* This loop matches on the initial part of a register group |
| 723 | name. If this initial part in ARGS matches only one register |
| 724 | group then the switch is made. */ |
| 725 | for (group = reggroup_next (gdbarch, NULL); |
| 726 | group != NULL; |
| 727 | group = reggroup_next (gdbarch, group)) |
| 728 | { |
| 729 | if (strncmp (reggroup_name (group), args, len) == 0) |
| 730 | { |
| 731 | if (match != NULL) |
| 732 | error (_("ambiguous register group name '%s'"), args); |
| 733 | match = group; |
| 734 | } |
| 735 | } |
| 736 | |
| 737 | if (match == NULL) |
| 738 | error (_("unknown register group '%s'"), args); |
| 739 | |
| 740 | tui_show_registers (match); |
| 741 | } |
| 742 | else |
| 743 | { |
| 744 | struct reggroup *group; |
| 745 | int first; |
| 746 | |
| 747 | printf_unfiltered (_("\"tui reg\" must be followed by the name of " |
| 748 | "either a register group,\nor one of 'next' " |
| 749 | "or 'prev'. Known register groups are:\n")); |
| 750 | |
| 751 | for (first = 1, group = reggroup_next (gdbarch, NULL); |
| 752 | group != NULL; |
| 753 | first = 0, group = reggroup_next (gdbarch, group)) |
| 754 | { |
| 755 | if (!first) |
| 756 | printf_unfiltered (", "); |
| 757 | printf_unfiltered ("%s", reggroup_name (group)); |
| 758 | } |
| 759 | |
| 760 | printf_unfiltered ("\n"); |
| 761 | } |
| 762 | } |
| 763 | |
| 764 | /* Complete names of register groups, and add the special "prev" and "next" |
| 765 | names. */ |
| 766 | |
| 767 | static void |
| 768 | tui_reggroup_completer (struct cmd_list_element *ignore, |
| 769 | completion_tracker &tracker, |
| 770 | const char *text, const char *word) |
| 771 | { |
| 772 | static const char *extra[] = { "next", "prev", NULL }; |
| 773 | size_t len = strlen (word); |
| 774 | const char **tmp; |
| 775 | |
| 776 | reggroup_completer (ignore, tracker, text, word); |
| 777 | |
| 778 | /* XXXX use complete_on_enum instead? */ |
| 779 | for (tmp = extra; *tmp != NULL; ++tmp) |
| 780 | { |
| 781 | if (strncmp (word, *tmp, len) == 0) |
| 782 | tracker.add_completion (make_unique_xstrdup (*tmp)); |
| 783 | } |
| 784 | } |
| 785 | |
| 786 | void |
| 787 | _initialize_tui_regs (void) |
| 788 | { |
| 789 | struct cmd_list_element **tuicmd, *cmd; |
| 790 | |
| 791 | tuicmd = tui_get_cmd_list (); |
| 792 | |
| 793 | cmd = add_cmd ("reg", class_tui, tui_reg_command, _("\ |
| 794 | TUI command to control the register window."), tuicmd); |
| 795 | set_cmd_completer (cmd, tui_reggroup_completer); |
| 796 | } |