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. */ | |
50265402 | 62 | static char* |
5b6fe301 | 63 | tui_make_status_line (struct tui_locator_element *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; | |
5b6fe301 | 249 | struct tui_gen_win_info *locator; |
c906108c | 250 | |
dd1abb8c | 251 | locator = tui_locator_win_info_ptr (); |
c906108c | 252 | |
cafb3438 | 253 | if (locator != NULL && locator->handle != NULL) |
c906108c | 254 | { |
5b6fe301 | 255 | struct tui_win_element *element; |
50265402 | 256 | |
63ed8182 | 257 | element = locator->content[0]; |
50265402 | 258 | |
6d012f14 | 259 | string = tui_make_status_line (&element->which_element.locator); |
50265402 | 260 | wmove (locator->handle, 0, 0); |
cae3f17b JB |
261 | /* We ignore the return value from wstandout and wstandend, casting |
262 | them to void in order to avoid a compiler warning. The warning | |
263 | itself was introduced by a patch to ncurses 5.7 dated 2009-08-29, | |
264 | changing these macro to expand to code that causes the compiler | |
265 | to generate an unused-value warning. */ | |
ae3bccd4 | 266 | (void) wstandout (locator->handle); |
50265402 SC |
267 | waddstr (locator->handle, string); |
268 | wclrtoeol (locator->handle); | |
ae3bccd4 | 269 | (void) wstandend (locator->handle); |
ec7d9e56 | 270 | tui_refresh_win (locator); |
50265402 SC |
271 | wmove (locator->handle, 0, 0); |
272 | xfree (string); | |
6d012f14 | 273 | locator->content_in_use = TRUE; |
c906108c | 274 | } |
50265402 | 275 | } |
c906108c | 276 | |
c906108c | 277 | |
2e17b763 SC |
278 | /* Set the filename portion of the locator. */ |
279 | static void | |
56d397a3 | 280 | tui_set_locator_fullname (const char *fullname) |
2e17b763 | 281 | { |
5b6fe301 MS |
282 | struct tui_gen_win_info *locator = tui_locator_win_info_ptr (); |
283 | struct tui_locator_element *element; | |
2e17b763 | 284 | |
22940a24 | 285 | if (locator->content[0] == NULL) |
7d6dd1e9 | 286 | { |
56d397a3 | 287 | tui_set_locator_info (NULL, fullname, NULL, 0, 0); |
7d6dd1e9 SC |
288 | return; |
289 | } | |
2e17b763 | 290 | |
63ed8182 | 291 | element = &locator->content[0]->which_element.locator; |
56d397a3 JK |
292 | element->full_name[0] = 0; |
293 | strcat_to_buf (element->full_name, MAX_LOCATOR_ELEMENT_LEN, fullname); | |
2e17b763 | 294 | } |
c906108c | 295 | |
b5fca6d7 PP |
296 | /* Update the locator, with the provided arguments. |
297 | ||
298 | Returns 1 if any of the locator's fields were actually changed, | |
299 | and 0 otherwise. */ | |
300 | ||
301 | static int | |
13274fc3 | 302 | tui_set_locator_info (struct gdbarch *gdbarch, |
56d397a3 | 303 | const char *fullname, |
08ef48c5 MS |
304 | const char *procname, |
305 | int lineno, | |
7d6dd1e9 | 306 | CORE_ADDR addr) |
c906108c | 307 | { |
5b6fe301 MS |
308 | struct tui_gen_win_info *locator = tui_locator_win_info_ptr (); |
309 | struct tui_locator_element *element; | |
b5fca6d7 | 310 | int locator_changed_p = 0; |
7d6dd1e9 SC |
311 | |
312 | /* Allocate the locator content if necessary. */ | |
6d012f14 | 313 | if (locator->content_size <= 0) |
7d6dd1e9 | 314 | { |
c45613e3 | 315 | locator->content = tui_alloc_content (1, LOCATOR_WIN); |
6d012f14 | 316 | locator->content_size = 1; |
b5fca6d7 | 317 | locator_changed_p = 1; |
7d6dd1e9 SC |
318 | } |
319 | ||
b5fca6d7 PP |
320 | if (procname == NULL) |
321 | procname = ""; | |
322 | ||
323 | if (fullname == NULL) | |
324 | fullname = ""; | |
325 | ||
63ed8182 | 326 | element = &locator->content[0]->which_element.locator; |
b5fca6d7 PP |
327 | |
328 | locator_changed_p |= strncmp (element->proc_name, procname, | |
329 | MAX_LOCATOR_ELEMENT_LEN) != 0; | |
330 | locator_changed_p |= lineno != element->line_no; | |
331 | locator_changed_p |= addr != element->addr; | |
332 | locator_changed_p |= gdbarch != element->gdbarch; | |
333 | locator_changed_p |= strncmp (element->full_name, fullname, | |
334 | MAX_LOCATOR_ELEMENT_LEN) != 0; | |
335 | ||
6d012f14 AC |
336 | element->proc_name[0] = (char) 0; |
337 | strcat_to_buf (element->proc_name, MAX_LOCATOR_ELEMENT_LEN, procname); | |
338 | element->line_no = lineno; | |
c774cec6 | 339 | element->addr = addr; |
13274fc3 | 340 | element->gdbarch = gdbarch; |
56d397a3 | 341 | tui_set_locator_fullname (fullname); |
b5fca6d7 PP |
342 | |
343 | return locator_changed_p; | |
c7c228ed | 344 | } |
c906108c | 345 | |
56d397a3 | 346 | /* Update only the full_name portion of the locator. */ |
c906108c | 347 | void |
56d397a3 | 348 | tui_update_locator_fullname (const char *fullname) |
c906108c | 349 | { |
56d397a3 | 350 | tui_set_locator_fullname (fullname); |
47d3492a | 351 | tui_show_locator_content (); |
2e17b763 | 352 | } |
c906108c | 353 | |
b5fca6d7 | 354 | /* Function to print the frame information for the TUI. The windows are |
bbcbf914 | 355 | refreshed only if frame information has changed since the last refresh. |
b5fca6d7 | 356 | |
bbcbf914 PP |
357 | Return 1 if frame information has changed (and windows subsequently |
358 | refreshed), 0 otherwise. */ | |
359 | ||
360 | int | |
47d3492a | 361 | tui_show_frame_info (struct frame_info *fi) |
c906108c | 362 | { |
b5fca6d7 | 363 | int locator_changed_p; |
c906108c SS |
364 | |
365 | if (fi) | |
366 | { | |
b4eb2452 | 367 | int start_line; |
c906108c | 368 | CORE_ADDR low; |
5b6fe301 | 369 | struct tui_gen_win_info *locator = tui_locator_win_info_ptr (); |
6ba8e26f | 370 | int source_already_displayed; |
e3eebbd7 | 371 | CORE_ADDR pc; |
7d6dd1e9 | 372 | |
51abb421 | 373 | symtab_and_line sal = find_frame_sal (fi); |
7d6dd1e9 | 374 | |
6ba8e26f | 375 | source_already_displayed = sal.symtab != 0 |
56d397a3 | 376 | && tui_source_is_displayed (symtab_to_fullname (sal.symtab)); |
e3eebbd7 PA |
377 | |
378 | if (get_frame_pc_if_available (fi, &pc)) | |
b5fca6d7 PP |
379 | locator_changed_p |
380 | = tui_set_locator_info (get_frame_arch (fi), | |
381 | (sal.symtab == 0 | |
382 | ? "??" : symtab_to_fullname (sal.symtab)), | |
383 | tui_get_function_from_frame (fi), | |
384 | sal.line, | |
385 | pc); | |
e3eebbd7 | 386 | else |
b5fca6d7 PP |
387 | locator_changed_p |
388 | = tui_set_locator_info (get_frame_arch (fi), | |
389 | "??", _("<unavailable>"), sal.line, 0); | |
390 | ||
391 | /* If the locator information has not changed, then frame information has | |
392 | not changed. If frame information has not changed, then the windows' | |
393 | contents will not change. So don't bother refreshing the windows. */ | |
394 | if (!locator_changed_p) | |
bbcbf914 | 395 | return 0; |
e3eebbd7 | 396 | |
47d3492a | 397 | tui_show_locator_content (); |
6d012f14 | 398 | start_line = 0; |
ad54d15b | 399 | for (struct tui_source_window_base *win_info : tui_source_windows ()) |
c906108c | 400 | { |
2a8854a7 | 401 | union tui_which_element *item; |
1c5313c5 | 402 | |
63ed8182 | 403 | item = &locator->content[0]->which_element; |
6d012f14 | 404 | if (win_info == TUI_SRC_WIN) |
c906108c | 405 | { |
6d012f14 AC |
406 | start_line = (item->locator.line_no - |
407 | (win_info->generic.viewport_height / 2)) + 1; | |
408 | if (start_line <= 0) | |
409 | start_line = 1; | |
c906108c SS |
410 | } |
411 | else | |
412 | { | |
2c02bd72 | 413 | if (find_pc_partial_function (get_frame_pc (fi), |
cafb3438 | 414 | NULL, &low, NULL) == 0) |
c04b3e8f JK |
415 | { |
416 | /* There is no symbol available for current PC. There is no | |
417 | safe way how to "disassemble backwards". */ | |
418 | low = get_frame_pc (fi); | |
419 | } | |
c906108c | 420 | else |
13274fc3 UW |
421 | low = tui_get_low_disassembly_address (get_frame_arch (fi), |
422 | low, get_frame_pc (fi)); | |
c906108c SS |
423 | } |
424 | ||
6d012f14 | 425 | if (win_info == TUI_SRC_WIN) |
c906108c | 426 | { |
362c05fe | 427 | struct tui_line_or_address l; |
1c5313c5 | 428 | |
362c05fe AS |
429 | l.loa = LOA_LINE; |
430 | l.u.line_no = start_line; | |
6ba8e26f | 431 | if (!(source_already_displayed |
9a2b4c1b MS |
432 | && tui_line_is_displayed (item->locator.line_no, |
433 | win_info, TRUE))) | |
13274fc3 UW |
434 | tui_update_source_window (win_info, get_frame_arch (fi), |
435 | sal.symtab, l, TRUE); | |
c906108c | 436 | else |
a4b99e53 | 437 | { |
362c05fe | 438 | l.u.line_no = item->locator.line_no; |
ad54d15b | 439 | win_info->set_is_exec_point_at (l); |
a4b99e53 | 440 | } |
c906108c SS |
441 | } |
442 | else | |
443 | { | |
6d012f14 | 444 | if (win_info == TUI_DISASM_WIN) |
c906108c | 445 | { |
362c05fe | 446 | struct tui_line_or_address a; |
1c5313c5 | 447 | |
362c05fe AS |
448 | a.loa = LOA_ADDRESS; |
449 | a.u.addr = low; | |
9a2b4c1b MS |
450 | if (!tui_addr_is_displayed (item->locator.addr, |
451 | win_info, TRUE)) | |
13274fc3 UW |
452 | tui_update_source_window (win_info, get_frame_arch (fi), |
453 | sal.symtab, a, TRUE); | |
c906108c | 454 | else |
a4b99e53 | 455 | { |
362c05fe | 456 | a.u.addr = item->locator.addr; |
ad54d15b | 457 | win_info->set_is_exec_point_at (a); |
a4b99e53 | 458 | } |
c906108c SS |
459 | } |
460 | } | |
6d012f14 | 461 | tui_update_exec_info (win_info); |
c906108c | 462 | } |
bbcbf914 PP |
463 | |
464 | return 1; | |
c906108c SS |
465 | } |
466 | else | |
467 | { | |
b5fca6d7 PP |
468 | locator_changed_p |
469 | = tui_set_locator_info (NULL, NULL, NULL, 0, (CORE_ADDR) 0); | |
470 | ||
471 | if (!locator_changed_p) | |
bbcbf914 | 472 | return 0; |
b5fca6d7 | 473 | |
47d3492a | 474 | tui_show_locator_content (); |
ad54d15b | 475 | for (struct tui_source_window_base *win_info : tui_source_windows ()) |
c906108c | 476 | { |
6d012f14 AC |
477 | tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT); |
478 | tui_update_exec_info (win_info); | |
c906108c | 479 | } |
bbcbf914 PP |
480 | |
481 | return 1; | |
c906108c | 482 | } |
7d6dd1e9 | 483 | } |
c906108c | 484 | |
6ba8e26f AC |
485 | /* Function to initialize gdb commands, for tui window stack |
486 | manipulation. */ | |
2c0b251b | 487 | |
c906108c | 488 | void |
6ba8e26f | 489 | _initialize_tui_stack (void) |
c906108c | 490 | { |
9a2b4c1b MS |
491 | add_com ("update", class_tui, tui_update_command, |
492 | _("Update the source window and locator to " | |
89549d7f | 493 | "display the current execution point.")); |
41783295 | 494 | } |
c906108c | 495 | |
7563e053 | 496 | /* Command to update the display with the current execution point. */ |
c906108c | 497 | static void |
0b39b52e | 498 | tui_update_command (const char *arg, int from_tty) |
c906108c | 499 | { |
95a6b0a1 | 500 | execute_command ("frame 0", from_tty); |
7563e053 | 501 | } |