Commit | Line | Data |
---|---|---|
f377b406 | 1 | /* TUI display registers in window. |
f33c6cbf | 2 | |
42a4f53d | 3 | Copyright (C) 1998-2019 Free Software Foundation, Inc. |
f33c6cbf | 4 | |
f377b406 | 5 | Contributed by Hewlett-Packard Company. |
c906108c | 6 | |
f377b406 | 7 | This file is part of GDB. |
c906108c | 8 | |
f377b406 SC |
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 | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
f377b406 SC |
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 | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
d7b2e967 AC |
24 | #include "tui/tui.h" |
25 | #include "tui/tui-data.h" | |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "gdbtypes.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "frame.h" | |
bc77de56 | 30 | #include "regcache.h" |
c906108c SS |
31 | #include "inferior.h" |
32 | #include "target.h" | |
d7b2e967 AC |
33 | #include "tui/tui-layout.h" |
34 | #include "tui/tui-win.h" | |
35 | #include "tui/tui-windata.h" | |
36 | #include "tui/tui-wingeneral.h" | |
37 | #include "tui/tui-file.h" | |
2c0b251b | 38 | #include "tui/tui-regs.h" |
312809f8 | 39 | #include "tui/tui-io.h" |
10f59415 | 40 | #include "reggroups.h" |
79a45b7d | 41 | #include "valprint.h" |
51f0e40d | 42 | #include "completer.h" |
c906108c | 43 | |
6a83354a | 44 | #include "gdb_curses.h" |
96ec9981 | 45 | |
c906108c SS |
46 | |
47 | /***************************************** | |
10f59415 | 48 | ** STATIC LOCAL FUNCTIONS FORWARD DECLS ** |
c906108c | 49 | ******************************************/ |
41bcff7f | 50 | static void tui_display_register (struct tui_data_item_window *data); |
c906108c | 51 | |
21e1c91e TT |
52 | static void tui_show_register_group (struct reggroup *group, |
53 | struct frame_info *frame, | |
54 | int refresh_values_only); | |
5eccfcc2 UW |
55 | |
56 | static enum tui_status tui_get_register (struct frame_info *frame, | |
41bcff7f TT |
57 | struct tui_data_item_window *data, |
58 | int regnum, bool *changedp); | |
5eccfcc2 | 59 | |
c906108c SS |
60 | |
61 | ||
62 | /***************************************** | |
63 | ** PUBLIC FUNCTIONS ** | |
64 | ******************************************/ | |
65 | ||
55fb0713 AC |
66 | /* Answer the number of the last line in the regs display. If there |
67 | are no registers (-1) is returned. */ | |
c906108c | 68 | int |
55fb0713 | 69 | tui_last_regs_line_no (void) |
c906108c | 70 | { |
d02c80cd | 71 | int num_lines = (-1); |
c906108c | 72 | |
21e1c91e | 73 | if (!TUI_DATA_WIN->regs_content.empty ()) |
c906108c | 74 | { |
21e1c91e | 75 | num_lines = (TUI_DATA_WIN->regs_content.size () |
238eb706 | 76 | / TUI_DATA_WIN->regs_column_count); |
21e1c91e | 77 | if (TUI_DATA_WIN->regs_content.size () % TUI_DATA_WIN->regs_column_count) |
6ba8e26f | 78 | num_lines++; |
c906108c | 79 | } |
6ba8e26f | 80 | return num_lines; |
55fb0713 | 81 | } |
c906108c SS |
82 | |
83 | ||
6ba8e26f AC |
84 | /* Answer the line number that the register element at element_no is |
85 | on. If element_no is greater than the number of register elements | |
55fb0713 | 86 | there are, -1 is returned. */ |
c906108c | 87 | int |
6ba8e26f | 88 | tui_line_from_reg_element_no (int element_no) |
c906108c | 89 | { |
21e1c91e | 90 | if (element_no < TUI_DATA_WIN->regs_content.size ()) |
c906108c SS |
91 | { |
92 | int i, line = (-1); | |
93 | ||
94 | i = 1; | |
95 | while (line == (-1)) | |
96 | { | |
238eb706 | 97 | if (element_no < TUI_DATA_WIN->regs_column_count * i) |
c906108c SS |
98 | line = i - 1; |
99 | else | |
100 | i++; | |
101 | } | |
102 | ||
103 | return line; | |
104 | } | |
105 | else | |
106 | return (-1); | |
55fb0713 | 107 | } |
c906108c SS |
108 | |
109 | ||
1cc6d956 MS |
110 | /* Answer the index of the first element in line_no. If line_no is |
111 | past the register area (-1) is returned. */ | |
c906108c | 112 | int |
6ba8e26f | 113 | tui_first_reg_element_no_inline (int line_no) |
c906108c | 114 | { |
238eb706 | 115 | if ((line_no * TUI_DATA_WIN->regs_column_count) |
21e1c91e | 116 | <= TUI_DATA_WIN->regs_content.size ()) |
238eb706 TT |
117 | return (((line_no + 1) * TUI_DATA_WIN->regs_column_count) |
118 | - TUI_DATA_WIN->regs_column_count); | |
c906108c SS |
119 | else |
120 | return (-1); | |
55fb0713 | 121 | } |
c906108c SS |
122 | |
123 | ||
10f59415 SC |
124 | /* Show the registers of the given group in the data window |
125 | and refresh the window. */ | |
c906108c | 126 | void |
10f59415 | 127 | tui_show_registers (struct reggroup *group) |
c906108c | 128 | { |
22940a24 | 129 | enum tui_status ret = TUI_FAILURE; |
c906108c | 130 | |
0bfbda3b SC |
131 | /* Make sure the curses mode is enabled. */ |
132 | tui_enable (); | |
133 | ||
134 | /* Make sure the register window is visible. If not, select an | |
135 | appropriate layout. */ | |
cb2ce893 | 136 | if (TUI_DATA_WIN == NULL || !TUI_DATA_WIN->is_visible) |
7bd0be3a | 137 | tui_set_layout_by_name (DATA_NAME); |
0bfbda3b | 138 | |
10f59415 SC |
139 | if (group == 0) |
140 | group = general_reggroup; | |
c906108c | 141 | |
1cc6d956 MS |
142 | /* Say that registers should be displayed, even if there is a |
143 | problem. */ | |
ceb13a13 | 144 | TUI_DATA_WIN->display_regs = true; |
10f59415 SC |
145 | |
146 | if (target_has_registers && target_has_stack && target_has_memory) | |
c906108c | 147 | { |
21e1c91e TT |
148 | tui_show_register_group (group, get_selected_frame (NULL), |
149 | group == TUI_DATA_WIN->current_group); | |
150 | ret = TUI_SUCCESS; | |
c906108c SS |
151 | } |
152 | if (ret == TUI_FAILURE) | |
153 | { | |
238eb706 | 154 | TUI_DATA_WIN->current_group = 0; |
edae1ccf | 155 | tui_erase_data_content (NO_REGS_STRING); |
c906108c SS |
156 | } |
157 | else | |
158 | { | |
1cc6d956 | 159 | /* Clear all notation of changed values. */ |
21e1c91e | 160 | for (auto &&data_item_win : TUI_DATA_WIN->regs_content) |
c906108c | 161 | { |
21e1c91e TT |
162 | if (data_item_win != nullptr) |
163 | data_item_win->highlight = false; | |
c906108c | 164 | } |
238eb706 | 165 | TUI_DATA_WIN->current_group = group; |
edae1ccf | 166 | tui_display_all_data (); |
c906108c | 167 | } |
55fb0713 | 168 | } |
c906108c SS |
169 | |
170 | ||
10f59415 | 171 | /* Set the data window to display the registers of the register group |
1cc6d956 MS |
172 | using the given frame. Values are refreshed only when |
173 | refresh_values_only is TRUE. */ | |
10f59415 | 174 | |
21e1c91e | 175 | static void |
5eccfcc2 | 176 | tui_show_register_group (struct reggroup *group, |
08ef48c5 MS |
177 | struct frame_info *frame, |
178 | int refresh_values_only) | |
10f59415 | 179 | { |
5eccfcc2 | 180 | struct gdbarch *gdbarch = get_frame_arch (frame); |
10f59415 | 181 | int nr_regs; |
10f59415 SC |
182 | int regnum, pos; |
183 | char title[80]; | |
10f59415 SC |
184 | |
185 | /* Make a new title showing which group we display. */ | |
186 | snprintf (title, sizeof (title) - 1, "Register group: %s", | |
187 | reggroup_name (group)); | |
cb2ce893 TT |
188 | xfree (TUI_DATA_WIN->title); |
189 | TUI_DATA_WIN->title = xstrdup (title); | |
10f59415 SC |
190 | |
191 | /* See how many registers must be displayed. */ | |
192 | nr_regs = 0; | |
f6efe3f8 | 193 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) |
10f59415 | 194 | { |
d20c1c3f PA |
195 | const char *name; |
196 | ||
197 | /* Must be in the group. */ | |
198 | if (!gdbarch_register_reggroup_p (gdbarch, regnum, group)) | |
199 | continue; | |
200 | ||
201 | /* If the register name is empty, it is undefined for this | |
202 | processor, so don't display anything. */ | |
203 | name = gdbarch_register_name (gdbarch, regnum); | |
204 | if (name == 0 || *name == '\0') | |
205 | continue; | |
206 | ||
207 | nr_regs++; | |
10f59415 SC |
208 | } |
209 | ||
21e1c91e TT |
210 | if (!refresh_values_only) |
211 | TUI_DATA_WIN->regs_content.clear (); | |
10f59415 | 212 | |
21e1c91e TT |
213 | if (nr_regs < TUI_DATA_WIN->regs_content.size ()) |
214 | TUI_DATA_WIN->regs_content.resize (nr_regs); | |
215 | else | |
10f59415 | 216 | { |
21e1c91e TT |
217 | for (int i = TUI_DATA_WIN->regs_content.size (); i < nr_regs; ++i) |
218 | TUI_DATA_WIN->regs_content.emplace_back (new tui_data_item_window ()); | |
10f59415 SC |
219 | } |
220 | ||
21e1c91e TT |
221 | /* Now set the register names and values. */ |
222 | pos = 0; | |
223 | for (regnum = 0; regnum < gdbarch_num_cooked_regs (gdbarch); regnum++) | |
10f59415 | 224 | { |
21e1c91e TT |
225 | struct tui_data_item_window *data_item_win; |
226 | const char *name; | |
10f59415 | 227 | |
21e1c91e TT |
228 | /* Must be in the group. */ |
229 | if (!gdbarch_register_reggroup_p (gdbarch, regnum, group)) | |
230 | continue; | |
10f59415 | 231 | |
21e1c91e TT |
232 | /* If the register name is empty, it is undefined for this |
233 | processor, so don't display anything. */ | |
234 | name = gdbarch_register_name (gdbarch, regnum); | |
235 | if (name == 0 || *name == '\0') | |
236 | continue; | |
10f59415 | 237 | |
21e1c91e TT |
238 | data_item_win = TUI_DATA_WIN->regs_content[pos].get (); |
239 | if (data_item_win) | |
240 | { | |
241 | if (!refresh_values_only) | |
242 | { | |
243 | data_item_win->item_no = regnum; | |
244 | data_item_win->name = name; | |
245 | data_item_win->highlight = false; | |
246 | } | |
247 | tui_get_register (frame, data_item_win, regnum, 0); | |
248 | } | |
249 | pos++; | |
250 | } | |
10f59415 SC |
251 | } |
252 | ||
55fb0713 | 253 | /* Function to display the registers in the content from |
6ba8e26f | 254 | 'start_element_no' until the end of the register content or the end |
55fb0713 AC |
255 | of the display height. No checking for displaying past the end of |
256 | the registers is done here. */ | |
c906108c | 257 | void |
6ba8e26f | 258 | tui_display_registers_from (int start_element_no) |
c906108c | 259 | { |
21e1c91e | 260 | if (!TUI_DATA_WIN->regs_content.empty ()) |
c906108c | 261 | { |
0043e6a5 | 262 | int j, item_win_width, cur_y; |
10f59415 SC |
263 | |
264 | int max_len = 0; | |
21e1c91e | 265 | for (auto &&data_item_win : TUI_DATA_WIN->regs_content) |
10f59415 | 266 | { |
10f59415 SC |
267 | char *p; |
268 | int len; | |
269 | ||
10f59415 | 270 | len = 0; |
41bcff7f | 271 | p = data_item_win->content; |
10f59415 SC |
272 | if (p != 0) |
273 | while (*p) | |
274 | { | |
275 | if (*p++ == '\t') | |
276 | len = 8 * ((len / 8) + 1); | |
277 | else | |
278 | len++; | |
279 | } | |
280 | ||
281 | if (len > max_len) | |
282 | max_len = len; | |
283 | } | |
284 | item_win_width = max_len + 1; | |
21e1c91e | 285 | int i = start_element_no; |
10f59415 | 286 | |
238eb706 | 287 | TUI_DATA_WIN->regs_column_count = |
cb2ce893 | 288 | (TUI_DATA_WIN->width - 2) / item_win_width; |
238eb706 TT |
289 | if (TUI_DATA_WIN->regs_column_count == 0) |
290 | TUI_DATA_WIN->regs_column_count = 1; | |
10f59415 | 291 | item_win_width = |
cb2ce893 | 292 | (TUI_DATA_WIN->width - 2) / TUI_DATA_WIN->regs_column_count; |
10f59415 | 293 | |
ef5eab5a MS |
294 | /* Now create each data "sub" window, and write the display into |
295 | it. */ | |
6ba8e26f | 296 | cur_y = 1; |
21e1c91e | 297 | while (i < TUI_DATA_WIN->regs_content.size () |
cb2ce893 | 298 | && cur_y <= TUI_DATA_WIN->viewport_height) |
c906108c SS |
299 | { |
300 | for (j = 0; | |
238eb706 | 301 | j < TUI_DATA_WIN->regs_column_count |
21e1c91e | 302 | && i < TUI_DATA_WIN->regs_content.size (); |
e5908723 | 303 | j++) |
c906108c | 304 | { |
41bcff7f | 305 | struct tui_data_item_window *data_item_win; |
c906108c | 306 | |
1cc6d956 | 307 | /* Create the window if necessary. */ |
21e1c91e | 308 | data_item_win = TUI_DATA_WIN->regs_content[i].get (); |
cafb3438 | 309 | if (data_item_win->handle != NULL |
10f59415 SC |
310 | && (data_item_win->height != 1 |
311 | || data_item_win->width != item_win_width | |
312 | || data_item_win->origin.x != (item_win_width * j) + 1 | |
313 | || data_item_win->origin.y != cur_y)) | |
314 | { | |
315 | tui_delete_win (data_item_win->handle); | |
316 | data_item_win->handle = 0; | |
317 | } | |
318 | ||
cafb3438 | 319 | if (data_item_win->handle == NULL) |
c906108c | 320 | { |
6ba8e26f | 321 | data_item_win->height = 1; |
10f59415 | 322 | data_item_win->width = item_win_width; |
6ba8e26f AC |
323 | data_item_win->origin.x = (item_win_width * j) + 1; |
324 | data_item_win->origin.y = cur_y; | |
325 | tui_make_window (data_item_win, DONT_BOX_WINDOW); | |
326 | scrollok (data_item_win->handle, FALSE); | |
c906108c | 327 | } |
6ba8e26f | 328 | touchwin (data_item_win->handle); |
fea14702 | 329 | |
10f59415 SC |
330 | /* Get the printable representation of the register |
331 | and display it. */ | |
41bcff7f | 332 | tui_display_register (data_item_win); |
1cc6d956 | 333 | i++; /* Next register. */ |
c906108c | 334 | } |
1cc6d956 | 335 | cur_y++; /* Next row. */ |
c906108c SS |
336 | } |
337 | } | |
55fb0713 | 338 | } |
c906108c SS |
339 | |
340 | ||
6ba8e26f AC |
341 | /* Function to display the registers in the content from |
342 | 'start_element_no' on 'start_line_no' until the end of the register | |
343 | content or the end of the display height. This function checks | |
344 | that we won't display off the end of the register display. */ | |
2c0b251b | 345 | static void |
08ef48c5 MS |
346 | tui_display_reg_element_at_line (int start_element_no, |
347 | int start_line_no) | |
c906108c | 348 | { |
21e1c91e | 349 | if (!TUI_DATA_WIN->regs_content.empty ()) |
c906108c | 350 | { |
d02c80cd | 351 | int element_no = start_element_no; |
c906108c | 352 | |
6ba8e26f | 353 | if (start_element_no != 0 && start_line_no != 0) |
c906108c | 354 | { |
d02c80cd | 355 | int last_line_no, first_line_on_last_page; |
c906108c | 356 | |
6ba8e26f | 357 | last_line_no = tui_last_regs_line_no (); |
9a2b4c1b | 358 | first_line_on_last_page |
cb2ce893 | 359 | = last_line_no - (TUI_DATA_WIN->height - 2); |
6ba8e26f AC |
360 | if (first_line_on_last_page < 0) |
361 | first_line_on_last_page = 0; | |
ef5eab5a | 362 | |
115ac53b | 363 | /* If the element_no causes us to scroll past the end of the |
ef5eab5a MS |
364 | registers, adjust what element to really start the |
365 | display at. */ | |
115ac53b | 366 | if (start_line_no > first_line_on_last_page) |
9a2b4c1b MS |
367 | element_no |
368 | = tui_first_reg_element_no_inline (first_line_on_last_page); | |
c906108c | 369 | } |
6ba8e26f | 370 | tui_display_registers_from (element_no); |
c906108c | 371 | } |
6ba8e26f | 372 | } |
c906108c SS |
373 | |
374 | ||
375 | ||
6ba8e26f | 376 | /* Function to display the registers starting at line line_no in the |
55fb0713 AC |
377 | data window. Answers the line number that the display actually |
378 | started from. If nothing is displayed (-1) is returned. */ | |
c906108c | 379 | int |
08ef48c5 MS |
380 | tui_display_registers_from_line (int line_no, |
381 | int force_display) | |
c906108c | 382 | { |
21e1c91e | 383 | if (!TUI_DATA_WIN->regs_content.empty ()) |
c906108c | 384 | { |
6ba8e26f | 385 | int line, element_no; |
c906108c | 386 | |
6ba8e26f | 387 | if (line_no < 0) |
c906108c | 388 | line = 0; |
6ba8e26f | 389 | else if (force_display) |
ef5eab5a MS |
390 | { /* If we must display regs (force_display is true), then |
391 | make sure that we don't display off the end of the | |
392 | registers. */ | |
6ba8e26f | 393 | if (line_no >= tui_last_regs_line_no ()) |
c906108c | 394 | { |
55fb0713 | 395 | if ((line = tui_line_from_reg_element_no ( |
21e1c91e | 396 | TUI_DATA_WIN->regs_content.size () - 1)) < 0) |
c906108c SS |
397 | line = 0; |
398 | } | |
399 | else | |
6ba8e26f | 400 | line = line_no; |
c906108c SS |
401 | } |
402 | else | |
6ba8e26f | 403 | line = line_no; |
c906108c | 404 | |
6ba8e26f | 405 | element_no = tui_first_reg_element_no_inline (line); |
21e1c91e | 406 | if (element_no < TUI_DATA_WIN->regs_content.size ()) |
6ba8e26f | 407 | tui_display_reg_element_at_line (element_no, line); |
c906108c SS |
408 | else |
409 | line = (-1); | |
410 | ||
411 | return line; | |
412 | } | |
413 | ||
1cc6d956 | 414 | return (-1); /* Nothing was displayed. */ |
55fb0713 | 415 | } |
c906108c SS |
416 | |
417 | ||
55fb0713 AC |
418 | /* This function check all displayed registers for changes in values, |
419 | given a particular frame. If the values have changed, they are | |
420 | updated with the new value and highlighted. */ | |
c906108c | 421 | void |
55fb0713 | 422 | tui_check_register_values (struct frame_info *frame) |
c906108c | 423 | { |
e5908723 | 424 | if (TUI_DATA_WIN != NULL |
cb2ce893 | 425 | && TUI_DATA_WIN->is_visible) |
c906108c | 426 | { |
21e1c91e | 427 | if (TUI_DATA_WIN->regs_content.empty () |
238eb706 TT |
428 | && TUI_DATA_WIN->display_regs) |
429 | tui_show_registers (TUI_DATA_WIN->current_group); | |
c906108c SS |
430 | else |
431 | { | |
21e1c91e | 432 | for (auto &&data_item_win_ptr : TUI_DATA_WIN->regs_content) |
c906108c | 433 | { |
6ba8e26f | 434 | int was_hilighted; |
c906108c | 435 | |
41bcff7f | 436 | was_hilighted = data_item_win_ptr->highlight; |
10f59415 | 437 | |
21e1c91e | 438 | tui_get_register (frame, data_item_win_ptr.get (), |
41bcff7f TT |
439 | data_item_win_ptr->item_no, |
440 | &data_item_win_ptr->highlight); | |
10f59415 | 441 | |
41bcff7f | 442 | if (data_item_win_ptr->highlight || was_hilighted) |
21e1c91e | 443 | tui_display_register (data_item_win_ptr.get ()); |
c906108c SS |
444 | } |
445 | } | |
446 | } | |
55fb0713 | 447 | } |
c906108c | 448 | |
1cc6d956 MS |
449 | /* Display a register in a window. If hilite is TRUE, then the value |
450 | will be displayed in reverse video. */ | |
10f59415 | 451 | static void |
41bcff7f | 452 | tui_display_register (struct tui_data_item_window *data) |
10f59415 | 453 | { |
41bcff7f | 454 | if (data->handle != NULL) |
10f59415 SC |
455 | { |
456 | int i; | |
c906108c | 457 | |
10f59415 | 458 | if (data->highlight) |
cae3f17b JB |
459 | /* We ignore the return value, casting it to void in order to avoid |
460 | a compiler warning. The warning itself was introduced by a patch | |
461 | to ncurses 5.7 dated 2009-08-29, changing this macro to expand | |
462 | to code that causes the compiler to generate an unused-value | |
463 | warning. */ | |
41bcff7f | 464 | (void) wstandout (data->handle); |
10f59415 | 465 | |
41bcff7f TT |
466 | wmove (data->handle, 0, 0); |
467 | for (i = 1; i < data->width; i++) | |
468 | waddch (data->handle, ' '); | |
469 | wmove (data->handle, 0, 0); | |
10f59415 | 470 | if (data->content) |
41bcff7f | 471 | waddstr (data->handle, data->content); |
10f59415 SC |
472 | |
473 | if (data->highlight) | |
cae3f17b JB |
474 | /* We ignore the return value, casting it to void in order to avoid |
475 | a compiler warning. The warning itself was introduced by a patch | |
476 | to ncurses 5.7 dated 2009-08-29, changing this macro to expand | |
477 | to code that causes the compiler to generate an unused-value | |
478 | warning. */ | |
41bcff7f TT |
479 | (void) wstandend (data->handle); |
480 | data->refresh_window (); | |
10f59415 SC |
481 | } |
482 | } | |
483 | ||
51f0e40d AB |
484 | /* Helper for "tui reg next", wraps a call to REGGROUP_NEXT, but adds wrap |
485 | around behaviour. Returns the next register group, or NULL if the | |
486 | register window is not currently being displayed. */ | |
487 | ||
488 | static struct reggroup * | |
489 | tui_reg_next (struct gdbarch *gdbarch) | |
c906108c | 490 | { |
51f0e40d | 491 | struct reggroup *group = NULL; |
e17c207e | 492 | |
b75c69bb | 493 | if (TUI_DATA_WIN != NULL) |
10f59415 | 494 | { |
238eb706 | 495 | group = TUI_DATA_WIN->current_group; |
e17c207e | 496 | group = reggroup_next (gdbarch, group); |
b75c69bb AB |
497 | if (group == NULL) |
498 | group = reggroup_next (gdbarch, NULL); | |
10f59415 | 499 | } |
51f0e40d | 500 | return group; |
10f59415 SC |
501 | } |
502 | ||
51f0e40d AB |
503 | /* Helper for "tui reg prev", wraps a call to REGGROUP_PREV, but adds wrap |
504 | around behaviour. Returns the previous register group, or NULL if the | |
505 | register window is not currently being displayed. */ | |
55b40027 | 506 | |
51f0e40d AB |
507 | static struct reggroup * |
508 | tui_reg_prev (struct gdbarch *gdbarch) | |
55b40027 | 509 | { |
51f0e40d | 510 | struct reggroup *group = NULL; |
55b40027 AB |
511 | |
512 | if (TUI_DATA_WIN != NULL) | |
513 | { | |
238eb706 | 514 | group = TUI_DATA_WIN->current_group; |
55b40027 AB |
515 | group = reggroup_prev (gdbarch, group); |
516 | if (group == NULL) | |
517 | group = reggroup_prev (gdbarch, NULL); | |
55b40027 | 518 | } |
51f0e40d | 519 | return group; |
55b40027 AB |
520 | } |
521 | ||
51f0e40d AB |
522 | /* Implement the 'tui reg' command. Changes the register group displayed |
523 | in the tui register window. Displays the tui register window if it is | |
524 | not already on display. */ | |
c906108c | 525 | |
10f59415 | 526 | static void |
e2d8ae16 | 527 | tui_reg_command (const char *args, int from_tty) |
10f59415 | 528 | { |
51f0e40d | 529 | struct gdbarch *gdbarch = get_current_arch (); |
c906108c | 530 | |
51f0e40d AB |
531 | if (args != NULL) |
532 | { | |
533 | struct reggroup *group, *match = NULL; | |
534 | size_t len = strlen (args); | |
535 | ||
536 | /* Make sure the curses mode is enabled. */ | |
537 | tui_enable (); | |
538 | ||
539 | /* Make sure the register window is visible. If not, select an | |
540 | appropriate layout. We need to do this before trying to run the | |
541 | 'next' or 'prev' commands. */ | |
cb2ce893 | 542 | if (TUI_DATA_WIN == NULL || !TUI_DATA_WIN->is_visible) |
51f0e40d AB |
543 | tui_set_layout_by_name (DATA_NAME); |
544 | ||
545 | if (strncmp (args, "next", len) == 0) | |
546 | match = tui_reg_next (gdbarch); | |
547 | else if (strncmp (args, "prev", len) == 0) | |
548 | match = tui_reg_prev (gdbarch); | |
549 | ||
550 | /* This loop matches on the initial part of a register group | |
551 | name. If this initial part in ARGS matches only one register | |
552 | group then the switch is made. */ | |
553 | for (group = reggroup_next (gdbarch, NULL); | |
554 | group != NULL; | |
555 | group = reggroup_next (gdbarch, group)) | |
556 | { | |
557 | if (strncmp (reggroup_name (group), args, len) == 0) | |
558 | { | |
559 | if (match != NULL) | |
560 | error (_("ambiguous register group name '%s'"), args); | |
561 | match = group; | |
562 | } | |
563 | } | |
564 | ||
565 | if (match == NULL) | |
566 | error (_("unknown register group '%s'"), args); | |
567 | ||
568 | tui_show_registers (match); | |
569 | } | |
570 | else | |
571 | { | |
572 | struct reggroup *group; | |
573 | int first; | |
574 | ||
575 | printf_unfiltered (_("\"tui reg\" must be followed by the name of " | |
576 | "either a register group,\nor one of 'next' " | |
577 | "or 'prev'. Known register groups are:\n")); | |
578 | ||
579 | for (first = 1, group = reggroup_next (gdbarch, NULL); | |
580 | group != NULL; | |
581 | first = 0, group = reggroup_next (gdbarch, group)) | |
582 | { | |
583 | if (!first) | |
584 | printf_unfiltered (", "); | |
585 | printf_unfiltered ("%s", reggroup_name (group)); | |
586 | } | |
587 | ||
588 | printf_unfiltered ("\n"); | |
589 | } | |
10f59415 SC |
590 | } |
591 | ||
51f0e40d AB |
592 | /* Complete names of register groups, and add the special "prev" and "next" |
593 | names. */ | |
c906108c | 594 | |
eb3ff9a5 | 595 | static void |
51f0e40d | 596 | tui_reggroup_completer (struct cmd_list_element *ignore, |
eb3ff9a5 | 597 | completion_tracker &tracker, |
51f0e40d | 598 | const char *text, const char *word) |
10f59415 | 599 | { |
51f0e40d AB |
600 | static const char *extra[] = { "next", "prev", NULL }; |
601 | size_t len = strlen (word); | |
602 | const char **tmp; | |
603 | ||
eb3ff9a5 | 604 | reggroup_completer (ignore, tracker, text, word); |
51f0e40d | 605 | |
eb3ff9a5 | 606 | /* XXXX use complete_on_enum instead? */ |
51f0e40d AB |
607 | for (tmp = extra; *tmp != NULL; ++tmp) |
608 | { | |
609 | if (strncmp (word, *tmp, len) == 0) | |
b02f78f9 | 610 | tracker.add_completion (make_unique_xstrdup (*tmp)); |
51f0e40d | 611 | } |
10f59415 | 612 | } |
c906108c SS |
613 | |
614 | void | |
6ba8e26f | 615 | _initialize_tui_regs (void) |
c906108c | 616 | { |
51f0e40d | 617 | struct cmd_list_element **tuicmd, *cmd; |
10f59415 SC |
618 | |
619 | tuicmd = tui_get_cmd_list (); | |
620 | ||
51f0e40d AB |
621 | cmd = add_cmd ("reg", class_tui, tui_reg_command, _("\ |
622 | TUI command to control the register window."), tuicmd); | |
623 | set_cmd_completer (cmd, tui_reggroup_completer); | |
41783295 | 624 | } |
c906108c SS |
625 | |
626 | ||
627 | /***************************************** | |
628 | ** STATIC LOCAL FUNCTIONS ** | |
629 | ******************************************/ | |
630 | ||
6eed1678 PA |
631 | /* Get the register from the frame and return a printable |
632 | representation of it. */ | |
633 | ||
634 | static char * | |
635 | tui_register_format (struct frame_info *frame, int regnum) | |
c906108c | 636 | { |
5eccfcc2 | 637 | struct gdbarch *gdbarch = get_frame_arch (frame); |
d20c1c3f | 638 | |
d7e74731 PA |
639 | string_file stream; |
640 | ||
31b68d4a TT |
641 | scoped_restore save_pagination |
642 | = make_scoped_restore (&pagination_enabled, 0); | |
643 | scoped_restore save_stdout | |
644 | = make_scoped_restore (&gdb_stdout, &stream); | |
645 | ||
d7e74731 | 646 | gdbarch_print_registers_info (gdbarch, &stream, frame, regnum, 1); |
c46cc7df SC |
647 | |
648 | /* Remove the possible \n. */ | |
d7e74731 PA |
649 | std::string &str = stream.string (); |
650 | if (!str.empty () && str.back () == '\n') | |
651 | str.resize (str.size () - 1); | |
c46cc7df | 652 | |
312809f8 | 653 | /* Expand tabs into spaces, since ncurses on MS-Windows doesn't. */ |
31b68d4a | 654 | return tui_expand_tabs (str.c_str (), 0); |
c46cc7df | 655 | } |
c906108c | 656 | |
1cc6d956 MS |
657 | /* Get the register value from the given frame and format it for the |
658 | display. When changep is set, check if the new register value has | |
659 | changed with respect to the previous call. */ | |
22940a24 | 660 | static enum tui_status |
5eccfcc2 | 661 | tui_get_register (struct frame_info *frame, |
41bcff7f TT |
662 | struct tui_data_item_window *data, |
663 | int regnum, bool *changedp) | |
c906108c | 664 | { |
22940a24 | 665 | enum tui_status ret = TUI_FAILURE; |
c906108c | 666 | |
10f59415 | 667 | if (changedp) |
41bcff7f | 668 | *changedp = false; |
c906108c SS |
669 | if (target_has_registers) |
670 | { | |
6eed1678 | 671 | char *prev_content = data->content; |
10f59415 | 672 | |
6eed1678 | 673 | data->content = tui_register_format (frame, regnum); |
9c5ea4d9 | 674 | |
6eed1678 PA |
675 | if (changedp != NULL |
676 | && strcmp (prev_content, data->content) != 0) | |
41bcff7f | 677 | *changedp = true; |
d20c1c3f | 678 | |
6eed1678 | 679 | xfree (prev_content); |
9c5ea4d9 UW |
680 | |
681 | ret = TUI_SUCCESS; | |
c906108c | 682 | } |
c906108c | 683 | return ret; |
6ba8e26f | 684 | } |