Commit | Line | Data |
---|---|---|
f377b406 | 1 | /* TUI display locator. |
f33c6cbf | 2 | |
42a4f53d | 3 | Copyright (C) 1998-2019 Free Software Foundation, Inc. |
f33c6cbf | 4 | |
f377b406 SC |
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 | |
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" | |
23 | #include "symtab.h" | |
24 | #include "breakpoint.h" | |
25 | #include "frame.h" | |
75fd9bc1 | 26 | #include "command.h" |
50265402 SC |
27 | #include "inferior.h" |
28 | #include "target.h" | |
7563e053 | 29 | #include "top.h" |
50f182aa | 30 | #include "gdb-demangle.h" |
56d397a3 | 31 | #include "source.h" |
d7b2e967 AC |
32 | #include "tui/tui.h" |
33 | #include "tui/tui-data.h" | |
34 | #include "tui/tui-stack.h" | |
35 | #include "tui/tui-wingeneral.h" | |
36 | #include "tui/tui-source.h" | |
37 | #include "tui/tui-winsource.h" | |
38 | #include "tui/tui-file.h" | |
c906108c | 39 | |
6a83354a | 40 | #include "gdb_curses.h" |
c906108c | 41 | |
5564c769 SC |
42 | /* Get a printable name for the function at the address. |
43 | The symbol name is demangled if demangling is turned on. | |
44 | Returns a pointer to a static area holding the result. */ | |
5b6fe301 | 45 | static char *tui_get_function_from_frame (struct frame_info *fi); |
c906108c | 46 | |
56d397a3 JK |
47 | /* Set the full_name portion of the locator. */ |
48 | static void tui_set_locator_fullname (const char *fullname); | |
2e17b763 SC |
49 | |
50 | /* Update the locator, with the provided arguments. */ | |
b5fca6d7 PP |
51 | static int tui_set_locator_info (struct gdbarch *gdbarch, |
52 | const char *fullname, | |
53 | const char *procname, | |
54 | int lineno, CORE_ADDR addr); | |
2e17b763 | 55 | |
0b39b52e | 56 | static void tui_update_command (const char *, int); |
7d6dd1e9 | 57 | \f |
c906108c | 58 | |
1cc6d956 MS |
59 | /* Create the status line to display as much information as we can on |
60 | this single line: target name, process number, current function, | |
61 | current line, current PC, SingleKey mode. */ | |
3add462f TT |
62 | static char * |
63 | tui_make_status_line (struct tui_locator_window *loc) | |
50265402 | 64 | { |
5b6fe301 | 65 | char *string; |
a42a37b7 | 66 | char line_buf[50], *pname; |
5b6fe301 | 67 | char *buf; |
a42a37b7 | 68 | int status_size; |
50265402 | 69 | int i, proc_width; |
5b6fe301 | 70 | const char *pid_name; |
50265402 SC |
71 | int target_width; |
72 | int pid_width; | |
73 | int line_width; | |
50265402 | 74 | |
a068643d | 75 | std::string pid_name_holder; |
d7e15655 | 76 | if (inferior_ptid == null_ptid) |
50265402 SC |
77 | pid_name = "No process"; |
78 | else | |
a068643d TT |
79 | { |
80 | pid_name_holder = target_pid_to_str (inferior_ptid); | |
81 | pid_name = pid_name_holder.c_str (); | |
82 | } | |
50265402 SC |
83 | |
84 | target_width = strlen (target_shortname); | |
85 | if (target_width > MAX_TARGET_WIDTH) | |
86 | target_width = MAX_TARGET_WIDTH; | |
87 | ||
88 | pid_width = strlen (pid_name); | |
89 | if (pid_width > MAX_PID_WIDTH) | |
90 | pid_width = MAX_PID_WIDTH; | |
a42a37b7 | 91 | |
dd1abb8c | 92 | status_size = tui_term_width (); |
50265402 | 93 | string = (char *) xmalloc (status_size + 1); |
a42a37b7 | 94 | buf = (char*) alloca (status_size + 1); |
50265402 SC |
95 | |
96 | /* Translate line number and obtain its size. */ | |
6d012f14 | 97 | if (loc->line_no > 0) |
8c042590 | 98 | xsnprintf (line_buf, sizeof (line_buf), "%d", loc->line_no); |
50265402 SC |
99 | else |
100 | strcpy (line_buf, "??"); | |
101 | line_width = strlen (line_buf); | |
102 | if (line_width < MIN_LINE_WIDTH) | |
103 | line_width = MIN_LINE_WIDTH; | |
104 | ||
105 | /* Translate PC address. */ | |
d7e74731 PA |
106 | string_file pc_out; |
107 | ||
2d5f09f0 | 108 | fputs_filtered (loc->gdbarch? paddress (loc->gdbarch, loc->addr) : "??", |
d7e74731 PA |
109 | &pc_out); |
110 | ||
111 | const char *pc_buf = pc_out.c_str (); | |
112 | int pc_width = pc_out.size (); | |
113 | ||
50265402 SC |
114 | /* First determine the amount of proc name width we have available. |
115 | The +1 are for a space separator between fields. | |
116 | The -1 are to take into account the \0 counted by sizeof. */ | |
117 | proc_width = (status_size | |
118 | - (target_width + 1) | |
119 | - (pid_width + 1) | |
120 | - (sizeof (PROC_PREFIX) - 1 + 1) | |
121 | - (sizeof (LINE_PREFIX) - 1 + line_width + 1) | |
122 | - (sizeof (PC_PREFIX) - 1 + pc_width + 1) | |
6d012f14 | 123 | - (tui_current_key_mode == TUI_SINGLE_KEY_MODE |
50265402 SC |
124 | ? (sizeof (SINGLE_KEY) - 1 + 1) |
125 | : 0)); | |
126 | ||
127 | /* If there is no room to print the function name, try by removing | |
128 | some fields. */ | |
129 | if (proc_width < MIN_PROC_WIDTH) | |
130 | { | |
131 | proc_width += target_width + 1; | |
132 | target_width = 0; | |
133 | if (proc_width < MIN_PROC_WIDTH) | |
134 | { | |
135 | proc_width += pid_width + 1; | |
136 | pid_width = 0; | |
137 | if (proc_width <= MIN_PROC_WIDTH) | |
138 | { | |
139 | proc_width += pc_width + sizeof (PC_PREFIX) - 1 + 1; | |
140 | pc_width = 0; | |
141 | if (proc_width < 0) | |
142 | { | |
143 | proc_width += line_width + sizeof (LINE_PREFIX) - 1 + 1; | |
144 | line_width = 0; | |
145 | if (proc_width < 0) | |
146 | proc_width = 0; | |
147 | } | |
148 | } | |
149 | } | |
150 | } | |
151 | ||
1cc6d956 | 152 | /* Now convert elements to string form. */ |
6d012f14 | 153 | pname = loc->proc_name; |
50265402 | 154 | |
1cc6d956 MS |
155 | /* Now create the locator line from the string version of the |
156 | elements. We could use sprintf() here but that wouldn't ensure | |
157 | that we don't overrun the size of the allocated buffer. | |
158 | strcat_to_buf() will. */ | |
50265402 SC |
159 | *string = (char) 0; |
160 | ||
161 | if (target_width > 0) | |
162 | { | |
163 | sprintf (buf, "%*.*s ", | |
164 | -target_width, target_width, target_shortname); | |
165 | strcat_to_buf (string, status_size, buf); | |
166 | } | |
167 | if (pid_width > 0) | |
168 | { | |
169 | sprintf (buf, "%*.*s ", | |
170 | -pid_width, pid_width, pid_name); | |
171 | strcat_to_buf (string, status_size, buf); | |
172 | } | |
173 | ||
174 | /* Show whether we are in SingleKey mode. */ | |
6d012f14 | 175 | if (tui_current_key_mode == TUI_SINGLE_KEY_MODE) |
50265402 SC |
176 | { |
177 | strcat_to_buf (string, status_size, SINGLE_KEY); | |
178 | strcat_to_buf (string, status_size, " "); | |
179 | } | |
180 | ||
1cc6d956 | 181 | /* Procedure/class name. */ |
50265402 SC |
182 | if (proc_width > 0) |
183 | { | |
184 | if (strlen (pname) > proc_width) | |
185 | sprintf (buf, "%s%*.*s* ", PROC_PREFIX, | |
186 | 1 - proc_width, proc_width - 1, pname); | |
187 | else | |
188 | sprintf (buf, "%s%*.*s ", PROC_PREFIX, | |
189 | -proc_width, proc_width, pname); | |
190 | strcat_to_buf (string, status_size, buf); | |
191 | } | |
192 | ||
193 | if (line_width > 0) | |
194 | { | |
195 | sprintf (buf, "%s%*.*s ", LINE_PREFIX, | |
196 | -line_width, line_width, line_buf); | |
197 | strcat_to_buf (string, status_size, buf); | |
198 | } | |
199 | if (pc_width > 0) | |
200 | { | |
201 | strcat_to_buf (string, status_size, PC_PREFIX); | |
202 | strcat_to_buf (string, status_size, pc_buf); | |
203 | } | |
204 | ||
205 | ||
206 | for (i = strlen (string); i < status_size; i++) | |
207 | string[i] = ' '; | |
208 | string[status_size] = (char) 0; | |
209 | ||
50265402 SC |
210 | return string; |
211 | } | |
212 | ||
1cc6d956 MS |
213 | /* Get a printable name for the function at the address. The symbol |
214 | name is demangled if demangling is turned on. Returns a pointer to | |
215 | a static area holding the result. */ | |
5564c769 SC |
216 | static char* |
217 | tui_get_function_from_frame (struct frame_info *fi) | |
218 | { | |
219 | static char name[256]; | |
d7e74731 | 220 | string_file stream; |
5564c769 | 221 | |
22e722e1 | 222 | print_address_symbolic (get_frame_arch (fi), get_frame_pc (fi), |
d7e74731 | 223 | &stream, demangle, ""); |
5564c769 | 224 | |
1cc6d956 MS |
225 | /* Use simple heuristics to isolate the function name. The symbol |
226 | can be demangled and we can have function parameters. Remove | |
227 | them because the status line is too short to display them. */ | |
d7e74731 PA |
228 | const char *d = stream.c_str (); |
229 | if (*d == '<') | |
230 | d++; | |
231 | strncpy (name, d, sizeof (name) - 1); | |
4e2af517 | 232 | name[sizeof (name) - 1] = 0; |
d7e74731 PA |
233 | |
234 | char *p = strchr (name, '('); | |
5564c769 SC |
235 | if (!p) |
236 | p = strchr (name, '>'); | |
237 | if (p) | |
238 | *p = 0; | |
239 | p = strchr (name, '+'); | |
240 | if (p) | |
241 | *p = 0; | |
5564c769 SC |
242 | return name; |
243 | } | |
c906108c | 244 | |
c906108c | 245 | void |
47d3492a | 246 | tui_show_locator_content (void) |
c906108c SS |
247 | { |
248 | char *string; | |
3add462f | 249 | struct tui_locator_window *locator; |
c906108c | 250 | |
dd1abb8c | 251 | locator = tui_locator_win_info_ptr (); |
c906108c | 252 | |
cafb3438 | 253 | if (locator != NULL && locator->handle != NULL) |
c906108c | 254 | { |
3add462f | 255 | string = tui_make_status_line (locator); |
50265402 | 256 | wmove (locator->handle, 0, 0); |
cae3f17b JB |
257 | /* We ignore the return value from wstandout and wstandend, casting |
258 | them to void in order to avoid a compiler warning. The warning | |
259 | itself was introduced by a patch to ncurses 5.7 dated 2009-08-29, | |
260 | changing these macro to expand to code that causes the compiler | |
261 | to generate an unused-value warning. */ | |
ae3bccd4 | 262 | (void) wstandout (locator->handle); |
50265402 SC |
263 | waddstr (locator->handle, string); |
264 | wclrtoeol (locator->handle); | |
ae3bccd4 | 265 | (void) wstandend (locator->handle); |
5b81daba | 266 | locator->refresh_window (); |
50265402 SC |
267 | wmove (locator->handle, 0, 0); |
268 | xfree (string); | |
c906108c | 269 | } |
50265402 | 270 | } |
c906108c | 271 | |
c906108c | 272 | |
2e17b763 SC |
273 | /* Set the filename portion of the locator. */ |
274 | static void | |
56d397a3 | 275 | tui_set_locator_fullname (const char *fullname) |
2e17b763 | 276 | { |
3add462f | 277 | struct tui_locator_window *locator = tui_locator_win_info_ptr (); |
2e17b763 | 278 | |
3add462f TT |
279 | locator->full_name[0] = 0; |
280 | strcat_to_buf (locator->full_name, MAX_LOCATOR_ELEMENT_LEN, fullname); | |
2e17b763 | 281 | } |
c906108c | 282 | |
b5fca6d7 PP |
283 | /* Update the locator, with the provided arguments. |
284 | ||
285 | Returns 1 if any of the locator's fields were actually changed, | |
286 | and 0 otherwise. */ | |
287 | ||
288 | static int | |
13274fc3 | 289 | tui_set_locator_info (struct gdbarch *gdbarch, |
56d397a3 | 290 | const char *fullname, |
08ef48c5 MS |
291 | const char *procname, |
292 | int lineno, | |
7d6dd1e9 | 293 | CORE_ADDR addr) |
c906108c | 294 | { |
3add462f | 295 | struct tui_locator_window *locator = tui_locator_win_info_ptr (); |
b5fca6d7 | 296 | int locator_changed_p = 0; |
7d6dd1e9 | 297 | |
b5fca6d7 PP |
298 | if (procname == NULL) |
299 | procname = ""; | |
300 | ||
301 | if (fullname == NULL) | |
302 | fullname = ""; | |
303 | ||
3add462f | 304 | locator_changed_p |= strncmp (locator->proc_name, procname, |
b5fca6d7 | 305 | MAX_LOCATOR_ELEMENT_LEN) != 0; |
3add462f TT |
306 | locator_changed_p |= lineno != locator->line_no; |
307 | locator_changed_p |= addr != locator->addr; | |
308 | locator_changed_p |= gdbarch != locator->gdbarch; | |
309 | locator_changed_p |= strncmp (locator->full_name, fullname, | |
b5fca6d7 PP |
310 | MAX_LOCATOR_ELEMENT_LEN) != 0; |
311 | ||
3add462f TT |
312 | locator->proc_name[0] = (char) 0; |
313 | strcat_to_buf (locator->proc_name, MAX_LOCATOR_ELEMENT_LEN, procname); | |
314 | locator->line_no = lineno; | |
315 | locator->addr = addr; | |
316 | locator->gdbarch = gdbarch; | |
56d397a3 | 317 | tui_set_locator_fullname (fullname); |
b5fca6d7 PP |
318 | |
319 | return locator_changed_p; | |
c7c228ed | 320 | } |
c906108c | 321 | |
56d397a3 | 322 | /* Update only the full_name portion of the locator. */ |
c906108c | 323 | void |
56d397a3 | 324 | tui_update_locator_fullname (const char *fullname) |
c906108c | 325 | { |
56d397a3 | 326 | tui_set_locator_fullname (fullname); |
47d3492a | 327 | tui_show_locator_content (); |
2e17b763 | 328 | } |
c906108c | 329 | |
b5fca6d7 | 330 | /* Function to print the frame information for the TUI. The windows are |
bbcbf914 | 331 | refreshed only if frame information has changed since the last refresh. |
b5fca6d7 | 332 | |
bbcbf914 PP |
333 | Return 1 if frame information has changed (and windows subsequently |
334 | refreshed), 0 otherwise. */ | |
335 | ||
336 | int | |
47d3492a | 337 | tui_show_frame_info (struct frame_info *fi) |
c906108c | 338 | { |
b5fca6d7 | 339 | int locator_changed_p; |
c906108c SS |
340 | |
341 | if (fi) | |
342 | { | |
3add462f | 343 | struct tui_locator_window *locator = tui_locator_win_info_ptr (); |
6ba8e26f | 344 | int source_already_displayed; |
e3eebbd7 | 345 | CORE_ADDR pc; |
7d6dd1e9 | 346 | |
51abb421 | 347 | symtab_and_line sal = find_frame_sal (fi); |
7d6dd1e9 | 348 | |
a38da35d TT |
349 | const char *fullname = nullptr; |
350 | if (sal.symtab != nullptr) | |
351 | fullname = symtab_to_fullname (sal.symtab); | |
352 | ||
353 | source_already_displayed = (sal.symtab != 0 | |
354 | && TUI_SRC_WIN != nullptr | |
355 | && TUI_SRC_WIN->showing_source_p (fullname)); | |
e3eebbd7 PA |
356 | |
357 | if (get_frame_pc_if_available (fi, &pc)) | |
b5fca6d7 PP |
358 | locator_changed_p |
359 | = tui_set_locator_info (get_frame_arch (fi), | |
360 | (sal.symtab == 0 | |
a38da35d | 361 | ? "??" : fullname), |
b5fca6d7 PP |
362 | tui_get_function_from_frame (fi), |
363 | sal.line, | |
364 | pc); | |
e3eebbd7 | 365 | else |
b5fca6d7 PP |
366 | locator_changed_p |
367 | = tui_set_locator_info (get_frame_arch (fi), | |
368 | "??", _("<unavailable>"), sal.line, 0); | |
369 | ||
370 | /* If the locator information has not changed, then frame information has | |
371 | not changed. If frame information has not changed, then the windows' | |
372 | contents will not change. So don't bother refreshing the windows. */ | |
373 | if (!locator_changed_p) | |
bbcbf914 | 374 | return 0; |
e3eebbd7 | 375 | |
47d3492a | 376 | tui_show_locator_content (); |
ad54d15b | 377 | for (struct tui_source_window_base *win_info : tui_source_windows ()) |
c906108c | 378 | { |
6d012f14 | 379 | if (win_info == TUI_SRC_WIN) |
c906108c | 380 | { |
9ad7fdef TT |
381 | int start_line = (locator->line_no - |
382 | (win_info->viewport_height / 2)) + 1; | |
6d012f14 AC |
383 | if (start_line <= 0) |
384 | start_line = 1; | |
c906108c | 385 | |
362c05fe | 386 | struct tui_line_or_address l; |
1c5313c5 | 387 | |
362c05fe AS |
388 | l.loa = LOA_LINE; |
389 | l.u.line_no = start_line; | |
6ba8e26f | 390 | if (!(source_already_displayed |
3add462f | 391 | && tui_line_is_displayed (locator->line_no, |
9a2b4c1b | 392 | win_info, TRUE))) |
13274fc3 UW |
393 | tui_update_source_window (win_info, get_frame_arch (fi), |
394 | sal.symtab, l, TRUE); | |
c906108c | 395 | else |
a4b99e53 | 396 | { |
3add462f | 397 | l.u.line_no = locator->line_no; |
ad54d15b | 398 | win_info->set_is_exec_point_at (l); |
a4b99e53 | 399 | } |
c906108c SS |
400 | } |
401 | else | |
402 | { | |
9ad7fdef TT |
403 | CORE_ADDR low; |
404 | ||
405 | if (find_pc_partial_function (get_frame_pc (fi), | |
406 | NULL, &low, NULL) == 0) | |
407 | { | |
408 | /* There is no symbol available for current PC. There is no | |
409 | safe way how to "disassemble backwards". */ | |
410 | low = get_frame_pc (fi); | |
411 | } | |
412 | else | |
413 | low = tui_get_low_disassembly_address (get_frame_arch (fi), | |
414 | low, get_frame_pc (fi)); | |
415 | ||
416 | struct tui_line_or_address a; | |
417 | ||
418 | a.loa = LOA_ADDRESS; | |
419 | a.u.addr = low; | |
420 | if (!tui_addr_is_displayed (locator->addr, | |
421 | win_info, TRUE)) | |
422 | tui_update_source_window (win_info, get_frame_arch (fi), | |
423 | sal.symtab, a, TRUE); | |
424 | else | |
c906108c | 425 | { |
9ad7fdef TT |
426 | a.u.addr = locator->addr; |
427 | win_info->set_is_exec_point_at (a); | |
c906108c SS |
428 | } |
429 | } | |
9ad7fdef | 430 | |
6d012f14 | 431 | tui_update_exec_info (win_info); |
c906108c | 432 | } |
bbcbf914 PP |
433 | |
434 | return 1; | |
c906108c SS |
435 | } |
436 | else | |
437 | { | |
b5fca6d7 PP |
438 | locator_changed_p |
439 | = tui_set_locator_info (NULL, NULL, NULL, 0, (CORE_ADDR) 0); | |
440 | ||
441 | if (!locator_changed_p) | |
bbcbf914 | 442 | return 0; |
b5fca6d7 | 443 | |
47d3492a | 444 | tui_show_locator_content (); |
ad54d15b | 445 | for (struct tui_source_window_base *win_info : tui_source_windows ()) |
c906108c | 446 | { |
6d012f14 AC |
447 | tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT); |
448 | tui_update_exec_info (win_info); | |
c906108c | 449 | } |
bbcbf914 PP |
450 | |
451 | return 1; | |
c906108c | 452 | } |
7d6dd1e9 | 453 | } |
c906108c | 454 | |
6ba8e26f AC |
455 | /* Function to initialize gdb commands, for tui window stack |
456 | manipulation. */ | |
2c0b251b | 457 | |
c906108c | 458 | void |
6ba8e26f | 459 | _initialize_tui_stack (void) |
c906108c | 460 | { |
9a2b4c1b MS |
461 | add_com ("update", class_tui, tui_update_command, |
462 | _("Update the source window and locator to " | |
89549d7f | 463 | "display the current execution point.")); |
41783295 | 464 | } |
c906108c | 465 | |
7563e053 | 466 | /* Command to update the display with the current execution point. */ |
c906108c | 467 | static void |
0b39b52e | 468 | tui_update_command (const char *arg, int from_tty) |
c906108c | 469 | { |
95a6b0a1 | 470 | execute_command ("frame 0", from_tty); |
7563e053 | 471 | } |