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c7c1b3e9 | 1 | /* Data structures and API for event locations in GDB. |
61baf725 | 2 | Copyright (C) 2013-2017 Free Software Foundation, Inc. |
c7c1b3e9 KS |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include "defs.h" | |
20 | #include "gdb_assert.h" | |
21 | #include "location.h" | |
22 | #include "symtab.h" | |
23 | #include "language.h" | |
24 | #include "linespec.h" | |
25 | #include "cli/cli-utils.h" | |
26 | #include "probe.h" | |
8090b426 | 27 | #include "cp-support.h" |
c7c1b3e9 KS |
28 | |
29 | #include <ctype.h> | |
30 | #include <string.h> | |
31 | ||
32 | /* An event location used to set a stop event in the inferior. | |
33 | This structure is an amalgam of the various ways | |
34 | to specify where a stop event should be set. */ | |
35 | ||
36 | struct event_location | |
37 | { | |
38 | /* The type of this breakpoint specification. */ | |
39 | enum event_location_type type; | |
ebdad8fc | 40 | #define EL_TYPE(P) (P)->type |
c7c1b3e9 KS |
41 | |
42 | union | |
43 | { | |
44 | /* A generic "this is a string specification" for a location. | |
45 | This representation is used by both "normal" linespecs and | |
46 | probes. */ | |
47 | char *addr_string; | |
ebdad8fc KS |
48 | #define EL_LINESPEC(P) ((P)->u.addr_string) |
49 | #define EL_PROBE(P) ((P)->u.addr_string) | |
a06efdd6 KS |
50 | |
51 | /* An address in the inferior. */ | |
52 | CORE_ADDR address; | |
ebdad8fc | 53 | #define EL_ADDRESS(P) (P)->u.address |
00e52e53 KS |
54 | |
55 | /* An explicit location. */ | |
67994074 | 56 | struct explicit_location explicit_loc; |
ebdad8fc | 57 | #define EL_EXPLICIT(P) (&((P)->u.explicit_loc)) |
c7c1b3e9 KS |
58 | } u; |
59 | ||
60 | /* Cached string representation of this location. This is used, e.g., to | |
61 | save stop event locations to file. Malloc'd. */ | |
62 | char *as_string; | |
ebdad8fc | 63 | #define EL_STRING(P) ((P)->as_string) |
c7c1b3e9 KS |
64 | }; |
65 | ||
66 | /* See description in location.h. */ | |
67 | ||
68 | enum event_location_type | |
69 | event_location_type (const struct event_location *location) | |
70 | { | |
71 | return EL_TYPE (location); | |
72 | } | |
73 | ||
74 | /* See description in location.h. */ | |
75 | ||
00e52e53 | 76 | void |
67994074 | 77 | initialize_explicit_location (struct explicit_location *explicit_loc) |
00e52e53 | 78 | { |
67994074 KS |
79 | memset (explicit_loc, 0, sizeof (struct explicit_location)); |
80 | explicit_loc->line_offset.sign = LINE_OFFSET_UNKNOWN; | |
00e52e53 KS |
81 | } |
82 | ||
83 | /* See description in location.h. */ | |
84 | ||
ffc2605c | 85 | event_location_up |
c7c1b3e9 KS |
86 | new_linespec_location (char **linespec) |
87 | { | |
88 | struct event_location *location; | |
89 | ||
90 | location = XCNEW (struct event_location); | |
91 | EL_TYPE (location) = LINESPEC_LOCATION; | |
92 | if (*linespec != NULL) | |
93 | { | |
94 | char *p; | |
95 | char *orig = *linespec; | |
96 | ||
97 | linespec_lex_to_end (linespec); | |
98 | p = remove_trailing_whitespace (orig, *linespec); | |
99 | if ((p - orig) > 0) | |
100 | EL_LINESPEC (location) = savestring (orig, p - orig); | |
101 | } | |
ffc2605c | 102 | return event_location_up (location); |
c7c1b3e9 KS |
103 | } |
104 | ||
105 | /* See description in location.h. */ | |
106 | ||
107 | const char * | |
108 | get_linespec_location (const struct event_location *location) | |
109 | { | |
110 | gdb_assert (EL_TYPE (location) == LINESPEC_LOCATION); | |
111 | return EL_LINESPEC (location); | |
112 | } | |
113 | ||
114 | /* See description in location.h. */ | |
115 | ||
ffc2605c | 116 | event_location_up |
305e13e6 JB |
117 | new_address_location (CORE_ADDR addr, const char *addr_string, |
118 | int addr_string_len) | |
a06efdd6 KS |
119 | { |
120 | struct event_location *location; | |
121 | ||
122 | location = XCNEW (struct event_location); | |
123 | EL_TYPE (location) = ADDRESS_LOCATION; | |
124 | EL_ADDRESS (location) = addr; | |
305e13e6 JB |
125 | if (addr_string != NULL) |
126 | EL_STRING (location) = xstrndup (addr_string, addr_string_len); | |
ffc2605c | 127 | return event_location_up (location); |
a06efdd6 KS |
128 | } |
129 | ||
130 | /* See description in location.h. */ | |
131 | ||
132 | CORE_ADDR | |
133 | get_address_location (const struct event_location *location) | |
134 | { | |
135 | gdb_assert (EL_TYPE (location) == ADDRESS_LOCATION); | |
136 | return EL_ADDRESS (location); | |
137 | } | |
138 | ||
139 | /* See description in location.h. */ | |
140 | ||
305e13e6 JB |
141 | const char * |
142 | get_address_string_location (const struct event_location *location) | |
143 | { | |
144 | gdb_assert (EL_TYPE (location) == ADDRESS_LOCATION); | |
145 | return EL_STRING (location); | |
146 | } | |
147 | ||
148 | /* See description in location.h. */ | |
149 | ||
ffc2605c | 150 | event_location_up |
5b56227b KS |
151 | new_probe_location (const char *probe) |
152 | { | |
153 | struct event_location *location; | |
154 | ||
155 | location = XCNEW (struct event_location); | |
156 | EL_TYPE (location) = PROBE_LOCATION; | |
157 | if (probe != NULL) | |
158 | EL_PROBE (location) = xstrdup (probe); | |
ffc2605c | 159 | return event_location_up (location); |
5b56227b KS |
160 | } |
161 | ||
162 | /* See description in location.h. */ | |
163 | ||
164 | const char * | |
165 | get_probe_location (const struct event_location *location) | |
166 | { | |
167 | gdb_assert (EL_TYPE (location) == PROBE_LOCATION); | |
168 | return EL_PROBE (location); | |
169 | } | |
170 | ||
171 | /* See description in location.h. */ | |
172 | ||
ffc2605c | 173 | event_location_up |
67994074 | 174 | new_explicit_location (const struct explicit_location *explicit_loc) |
00e52e53 KS |
175 | { |
176 | struct event_location tmp; | |
177 | ||
178 | memset (&tmp, 0, sizeof (struct event_location)); | |
179 | EL_TYPE (&tmp) = EXPLICIT_LOCATION; | |
180 | initialize_explicit_location (EL_EXPLICIT (&tmp)); | |
67994074 | 181 | if (explicit_loc != NULL) |
00e52e53 | 182 | { |
67994074 | 183 | if (explicit_loc->source_filename != NULL) |
00e52e53 KS |
184 | { |
185 | EL_EXPLICIT (&tmp)->source_filename | |
67994074 | 186 | = explicit_loc->source_filename; |
00e52e53 KS |
187 | } |
188 | ||
67994074 | 189 | if (explicit_loc->function_name != NULL) |
00e52e53 | 190 | EL_EXPLICIT (&tmp)->function_name |
67994074 | 191 | = explicit_loc->function_name; |
00e52e53 | 192 | |
67994074 KS |
193 | if (explicit_loc->label_name != NULL) |
194 | EL_EXPLICIT (&tmp)->label_name = explicit_loc->label_name; | |
00e52e53 | 195 | |
67994074 KS |
196 | if (explicit_loc->line_offset.sign != LINE_OFFSET_UNKNOWN) |
197 | EL_EXPLICIT (&tmp)->line_offset = explicit_loc->line_offset; | |
00e52e53 KS |
198 | } |
199 | ||
200 | return copy_event_location (&tmp); | |
201 | } | |
202 | ||
203 | /* See description in location.h. */ | |
204 | ||
205 | struct explicit_location * | |
206 | get_explicit_location (struct event_location *location) | |
207 | { | |
208 | gdb_assert (EL_TYPE (location) == EXPLICIT_LOCATION); | |
209 | return EL_EXPLICIT (location); | |
210 | } | |
211 | ||
212 | /* See description in location.h. */ | |
213 | ||
214 | const struct explicit_location * | |
215 | get_explicit_location_const (const struct event_location *location) | |
216 | { | |
217 | gdb_assert (EL_TYPE (location) == EXPLICIT_LOCATION); | |
218 | return EL_EXPLICIT (location); | |
219 | } | |
220 | ||
221 | /* This convenience function returns a malloc'd string which | |
67994074 | 222 | represents the location in EXPLICIT_LOC. |
00e52e53 KS |
223 | |
224 | AS_LINESPEC is non-zero if this string should be a linespec. | |
225 | Otherwise it will be output in explicit form. */ | |
226 | ||
227 | static char * | |
228 | explicit_to_string_internal (int as_linespec, | |
67994074 | 229 | const struct explicit_location *explicit_loc) |
00e52e53 | 230 | { |
00e52e53 | 231 | int need_space = 0; |
d7e74731 PA |
232 | char space = as_linespec ? ':' : ' '; |
233 | string_file buf; | |
00e52e53 | 234 | |
67994074 | 235 | if (explicit_loc->source_filename != NULL) |
00e52e53 KS |
236 | { |
237 | if (!as_linespec) | |
d7e74731 PA |
238 | buf.puts ("-source "); |
239 | buf.puts (explicit_loc->source_filename); | |
00e52e53 KS |
240 | need_space = 1; |
241 | } | |
242 | ||
67994074 | 243 | if (explicit_loc->function_name != NULL) |
00e52e53 KS |
244 | { |
245 | if (need_space) | |
d7e74731 | 246 | buf.putc (space); |
00e52e53 | 247 | if (!as_linespec) |
d7e74731 PA |
248 | buf.puts ("-function "); |
249 | buf.puts (explicit_loc->function_name); | |
00e52e53 KS |
250 | need_space = 1; |
251 | } | |
252 | ||
67994074 | 253 | if (explicit_loc->label_name != NULL) |
00e52e53 KS |
254 | { |
255 | if (need_space) | |
d7e74731 | 256 | buf.putc (space); |
00e52e53 | 257 | if (!as_linespec) |
d7e74731 PA |
258 | buf.puts ("-label "); |
259 | buf.puts (explicit_loc->label_name); | |
00e52e53 KS |
260 | need_space = 1; |
261 | } | |
262 | ||
67994074 | 263 | if (explicit_loc->line_offset.sign != LINE_OFFSET_UNKNOWN) |
00e52e53 KS |
264 | { |
265 | if (need_space) | |
d7e74731 | 266 | buf.putc (space); |
00e52e53 | 267 | if (!as_linespec) |
d7e74731 PA |
268 | buf.puts ("-line "); |
269 | buf.printf ("%s%d", | |
270 | (explicit_loc->line_offset.sign == LINE_OFFSET_NONE ? "" | |
271 | : (explicit_loc->line_offset.sign | |
272 | == LINE_OFFSET_PLUS ? "+" : "-")), | |
273 | explicit_loc->line_offset.offset); | |
00e52e53 KS |
274 | } |
275 | ||
d7e74731 | 276 | return xstrdup (buf.c_str ()); |
00e52e53 KS |
277 | } |
278 | ||
279 | /* See description in location.h. */ | |
280 | ||
281 | char * | |
67994074 | 282 | explicit_location_to_string (const struct explicit_location *explicit_loc) |
00e52e53 | 283 | { |
67994074 | 284 | return explicit_to_string_internal (0, explicit_loc); |
00e52e53 KS |
285 | } |
286 | ||
287 | /* See description in location.h. */ | |
288 | ||
289 | char * | |
67994074 | 290 | explicit_location_to_linespec (const struct explicit_location *explicit_loc) |
00e52e53 | 291 | { |
67994074 | 292 | return explicit_to_string_internal (1, explicit_loc); |
00e52e53 KS |
293 | } |
294 | ||
295 | /* See description in location.h. */ | |
296 | ||
ffc2605c | 297 | event_location_up |
c7c1b3e9 KS |
298 | copy_event_location (const struct event_location *src) |
299 | { | |
300 | struct event_location *dst; | |
301 | ||
302 | dst = XCNEW (struct event_location); | |
303 | EL_TYPE (dst) = EL_TYPE (src); | |
304 | if (EL_STRING (src) != NULL) | |
305 | EL_STRING (dst) = xstrdup (EL_STRING (src)); | |
306 | ||
307 | switch (EL_TYPE (src)) | |
308 | { | |
309 | case LINESPEC_LOCATION: | |
310 | if (EL_LINESPEC (src) != NULL) | |
311 | EL_LINESPEC (dst) = xstrdup (EL_LINESPEC (src)); | |
312 | break; | |
313 | ||
a06efdd6 KS |
314 | case ADDRESS_LOCATION: |
315 | EL_ADDRESS (dst) = EL_ADDRESS (src); | |
316 | break; | |
317 | ||
00e52e53 KS |
318 | case EXPLICIT_LOCATION: |
319 | if (EL_EXPLICIT (src)->source_filename != NULL) | |
320 | EL_EXPLICIT (dst)->source_filename | |
321 | = xstrdup (EL_EXPLICIT (src)->source_filename); | |
322 | ||
323 | if (EL_EXPLICIT (src)->function_name != NULL) | |
324 | EL_EXPLICIT (dst)->function_name | |
325 | = xstrdup (EL_EXPLICIT (src)->function_name); | |
326 | ||
327 | if (EL_EXPLICIT (src)->label_name != NULL) | |
328 | EL_EXPLICIT (dst)->label_name = xstrdup (EL_EXPLICIT (src)->label_name); | |
329 | ||
330 | EL_EXPLICIT (dst)->line_offset = EL_EXPLICIT (src)->line_offset; | |
331 | break; | |
332 | ||
333 | ||
5b56227b KS |
334 | case PROBE_LOCATION: |
335 | if (EL_PROBE (src) != NULL) | |
336 | EL_PROBE (dst) = xstrdup (EL_PROBE (src)); | |
337 | break; | |
338 | ||
c7c1b3e9 KS |
339 | default: |
340 | gdb_assert_not_reached ("unknown event location type"); | |
341 | } | |
342 | ||
ffc2605c | 343 | return event_location_up (dst); |
c7c1b3e9 KS |
344 | } |
345 | ||
c7c1b3e9 | 346 | void |
8e9e35b1 | 347 | event_location_deleter::operator() (event_location *location) const |
c7c1b3e9 KS |
348 | { |
349 | if (location != NULL) | |
350 | { | |
351 | xfree (EL_STRING (location)); | |
352 | ||
353 | switch (EL_TYPE (location)) | |
354 | { | |
355 | case LINESPEC_LOCATION: | |
356 | xfree (EL_LINESPEC (location)); | |
357 | break; | |
358 | ||
a06efdd6 KS |
359 | case ADDRESS_LOCATION: |
360 | /* Nothing to do. */ | |
361 | break; | |
362 | ||
00e52e53 KS |
363 | case EXPLICIT_LOCATION: |
364 | xfree (EL_EXPLICIT (location)->source_filename); | |
365 | xfree (EL_EXPLICIT (location)->function_name); | |
366 | xfree (EL_EXPLICIT (location)->label_name); | |
367 | break; | |
368 | ||
5b56227b KS |
369 | case PROBE_LOCATION: |
370 | xfree (EL_PROBE (location)); | |
371 | break; | |
372 | ||
c7c1b3e9 KS |
373 | default: |
374 | gdb_assert_not_reached ("unknown event location type"); | |
375 | } | |
376 | ||
377 | xfree (location); | |
378 | } | |
379 | } | |
380 | ||
381 | /* See description in location.h. */ | |
382 | ||
383 | const char * | |
384 | event_location_to_string (struct event_location *location) | |
385 | { | |
386 | if (EL_STRING (location) == NULL) | |
387 | { | |
388 | switch (EL_TYPE (location)) | |
389 | { | |
390 | case LINESPEC_LOCATION: | |
391 | if (EL_LINESPEC (location) != NULL) | |
392 | EL_STRING (location) = xstrdup (EL_LINESPEC (location)); | |
393 | break; | |
394 | ||
a06efdd6 KS |
395 | case ADDRESS_LOCATION: |
396 | EL_STRING (location) | |
397 | = xstrprintf ("*%s", | |
398 | core_addr_to_string (EL_ADDRESS (location))); | |
399 | break; | |
400 | ||
00e52e53 KS |
401 | case EXPLICIT_LOCATION: |
402 | EL_STRING (location) | |
403 | = explicit_location_to_string (EL_EXPLICIT (location)); | |
404 | break; | |
405 | ||
5b56227b KS |
406 | case PROBE_LOCATION: |
407 | EL_STRING (location) = xstrdup (EL_PROBE (location)); | |
408 | break; | |
409 | ||
c7c1b3e9 KS |
410 | default: |
411 | gdb_assert_not_reached ("unknown event location type"); | |
412 | } | |
413 | } | |
414 | ||
415 | return EL_STRING (location); | |
416 | } | |
417 | ||
87f0e720 KS |
418 | /* A lexer for explicit locations. This function will advance INP |
419 | past any strings that it lexes. Returns a malloc'd copy of the | |
420 | lexed string or NULL if no lexing was done. */ | |
421 | ||
4b217cc7 | 422 | static gdb::unique_xmalloc_ptr<char> |
87f0e720 KS |
423 | explicit_location_lex_one (const char **inp, |
424 | const struct language_defn *language) | |
425 | { | |
426 | const char *start = *inp; | |
427 | ||
428 | if (*start == '\0') | |
429 | return NULL; | |
430 | ||
431 | /* If quoted, skip to the ending quote. */ | |
432 | if (strchr (get_gdb_linespec_parser_quote_characters (), *start)) | |
433 | { | |
434 | char quote_char = *start; | |
435 | ||
436 | /* If the input is not an Ada operator, skip to the matching | |
437 | closing quote and return the string. */ | |
438 | if (!(language->la_language == language_ada | |
439 | && quote_char == '\"' && is_ada_operator (start))) | |
440 | { | |
441 | const char *end = find_toplevel_char (start + 1, quote_char); | |
442 | ||
443 | if (end == NULL) | |
444 | error (_("Unmatched quote, %s."), start); | |
445 | *inp = end + 1; | |
4b217cc7 TT |
446 | return gdb::unique_xmalloc_ptr<char> (savestring (start + 1, |
447 | *inp - start - 2)); | |
87f0e720 KS |
448 | } |
449 | } | |
450 | ||
451 | /* If the input starts with '-' or '+', the string ends with the next | |
452 | whitespace or comma. */ | |
453 | if (*start == '-' || *start == '+') | |
454 | { | |
455 | while (*inp[0] != '\0' && *inp[0] != ',' && !isspace (*inp[0])) | |
456 | ++(*inp); | |
457 | } | |
458 | else | |
459 | { | |
460 | /* Handle numbers first, stopping at the next whitespace or ','. */ | |
461 | while (isdigit (*inp[0])) | |
462 | ++(*inp); | |
463 | if (*inp[0] == '\0' || isspace (*inp[0]) || *inp[0] == ',') | |
4b217cc7 TT |
464 | return gdb::unique_xmalloc_ptr<char> (savestring (start, |
465 | *inp - start)); | |
87f0e720 KS |
466 | |
467 | /* Otherwise stop at the next occurrence of whitespace, '\0', | |
468 | keyword, or ','. */ | |
469 | *inp = start; | |
470 | while ((*inp)[0] | |
471 | && (*inp)[0] != ',' | |
472 | && !(isspace ((*inp)[0]) | |
473 | || linespec_lexer_lex_keyword (&(*inp)[1]))) | |
474 | { | |
475 | /* Special case: C++ operator,. */ | |
476 | if (language->la_language == language_cplus | |
8090b426 PA |
477 | && startswith (*inp, CP_OPERATOR_STR)) |
478 | (*inp) += CP_OPERATOR_LEN; | |
87f0e720 KS |
479 | ++(*inp); |
480 | } | |
481 | } | |
482 | ||
483 | if (*inp - start > 0) | |
4b217cc7 | 484 | return gdb::unique_xmalloc_ptr<char> (savestring (start, *inp - start)); |
87f0e720 KS |
485 | |
486 | return NULL; | |
487 | } | |
488 | ||
489 | /* See description in location.h. */ | |
490 | ||
ffc2605c | 491 | event_location_up |
87f0e720 KS |
492 | string_to_explicit_location (const char **argp, |
493 | const struct language_defn *language, | |
494 | int dont_throw) | |
495 | { | |
ffc2605c | 496 | event_location_up location; |
87f0e720 KS |
497 | |
498 | /* It is assumed that input beginning with '-' and a non-digit | |
eeb1af43 KS |
499 | character is an explicit location. "-p" is reserved, though, |
500 | for probe locations. */ | |
87f0e720 | 501 | if (argp == NULL |
e742d386 | 502 | || *argp == NULL |
87f0e720 | 503 | || *argp[0] != '-' |
eeb1af43 KS |
504 | || !isalpha ((*argp)[1]) |
505 | || ((*argp)[0] == '-' && (*argp)[1] == 'p')) | |
87f0e720 KS |
506 | return NULL; |
507 | ||
508 | location = new_explicit_location (NULL); | |
87f0e720 KS |
509 | |
510 | /* Process option/argument pairs. dprintf_command | |
511 | requires that processing stop on ','. */ | |
512 | while ((*argp)[0] != '\0' && (*argp)[0] != ',') | |
513 | { | |
514 | int len; | |
87f0e720 | 515 | const char *start; |
87f0e720 KS |
516 | |
517 | /* If *ARGP starts with a keyword, stop processing | |
518 | options. */ | |
519 | if (linespec_lexer_lex_keyword (*argp) != NULL) | |
520 | break; | |
521 | ||
522 | /* Mark the start of the string in case we need to rewind. */ | |
523 | start = *argp; | |
524 | ||
525 | /* Get the option string. */ | |
4b217cc7 TT |
526 | gdb::unique_xmalloc_ptr<char> opt |
527 | = explicit_location_lex_one (argp, language); | |
87f0e720 KS |
528 | |
529 | *argp = skip_spaces_const (*argp); | |
530 | ||
531 | /* Get the argument string. */ | |
4b217cc7 TT |
532 | gdb::unique_xmalloc_ptr<char> oarg |
533 | = explicit_location_lex_one (argp, language); | |
534 | bool have_oarg = oarg != NULL; | |
87f0e720 KS |
535 | *argp = skip_spaces_const (*argp); |
536 | ||
537 | /* Use the length of the option to allow abbreviations. */ | |
4b217cc7 | 538 | len = strlen (opt.get ()); |
87f0e720 KS |
539 | |
540 | /* All options have a required argument. Checking for this required | |
541 | argument is deferred until later. */ | |
4b217cc7 TT |
542 | if (strncmp (opt.get (), "-source", len) == 0) |
543 | EL_EXPLICIT (location)->source_filename = oarg.release (); | |
544 | else if (strncmp (opt.get (), "-function", len) == 0) | |
545 | EL_EXPLICIT (location)->function_name = oarg.release (); | |
546 | else if (strncmp (opt.get (), "-line", len) == 0) | |
87f0e720 | 547 | { |
4b217cc7 TT |
548 | if (have_oarg) |
549 | EL_EXPLICIT (location)->line_offset | |
550 | = linespec_parse_line_offset (oarg.get ()); | |
87f0e720 | 551 | } |
4b217cc7 TT |
552 | else if (strncmp (opt.get (), "-label", len) == 0) |
553 | EL_EXPLICIT (location)->label_name = oarg.release (); | |
87f0e720 KS |
554 | /* Only emit an "invalid argument" error for options |
555 | that look like option strings. */ | |
4b217cc7 | 556 | else if (opt.get ()[0] == '-' && !isdigit (opt.get ()[1])) |
87f0e720 KS |
557 | { |
558 | if (!dont_throw) | |
4b217cc7 | 559 | error (_("invalid explicit location argument, \"%s\""), opt.get ()); |
87f0e720 KS |
560 | } |
561 | else | |
562 | { | |
563 | /* End of the explicit location specification. | |
564 | Stop parsing and return whatever explicit location was | |
565 | parsed. */ | |
566 | *argp = start; | |
87f0e720 KS |
567 | return location; |
568 | } | |
569 | ||
570 | /* It's a little lame to error after the fact, but in this | |
571 | case, it provides a much better user experience to issue | |
572 | the "invalid argument" error before any missing | |
573 | argument error. */ | |
4b217cc7 TT |
574 | if (!have_oarg && !dont_throw) |
575 | error (_("missing argument for \"%s\""), opt.get ()); | |
87f0e720 KS |
576 | } |
577 | ||
578 | /* One special error check: If a source filename was given | |
579 | without offset, function, or label, issue an error. */ | |
580 | if (EL_EXPLICIT (location)->source_filename != NULL | |
581 | && EL_EXPLICIT (location)->function_name == NULL | |
582 | && EL_EXPLICIT (location)->label_name == NULL | |
583 | && (EL_EXPLICIT (location)->line_offset.sign == LINE_OFFSET_UNKNOWN) | |
584 | && !dont_throw) | |
585 | { | |
586 | error (_("Source filename requires function, label, or " | |
587 | "line offset.")); | |
588 | } | |
589 | ||
87f0e720 KS |
590 | return location; |
591 | } | |
592 | ||
c7c1b3e9 KS |
593 | /* See description in location.h. */ |
594 | ||
ffc2605c | 595 | event_location_up |
eeb1af43 KS |
596 | string_to_event_location_basic (char **stringp, |
597 | const struct language_defn *language) | |
c7c1b3e9 | 598 | { |
ffc2605c | 599 | event_location_up location; |
870f88f7 | 600 | const char *cs; |
c7c1b3e9 | 601 | |
eeb1af43 KS |
602 | /* Try the input as a probe spec. */ |
603 | cs = *stringp; | |
604 | if (cs != NULL && probe_linespec_to_ops (&cs) != NULL) | |
a06efdd6 | 605 | { |
eeb1af43 KS |
606 | location = new_probe_location (*stringp); |
607 | *stringp += strlen (*stringp); | |
a06efdd6 KS |
608 | } |
609 | else | |
610 | { | |
eeb1af43 KS |
611 | /* Try an address location. */ |
612 | if (*stringp != NULL && **stringp == '*') | |
5b56227b | 613 | { |
87f0e720 | 614 | const char *arg, *orig; |
eeb1af43 | 615 | CORE_ADDR addr; |
87f0e720 | 616 | |
87f0e720 | 617 | orig = arg = *stringp; |
eeb1af43 KS |
618 | addr = linespec_expression_to_pc (&arg); |
619 | location = new_address_location (addr, orig, arg - orig); | |
620 | *stringp += arg - orig; | |
621 | } | |
622 | else | |
623 | { | |
624 | /* Everything else is a linespec. */ | |
625 | location = new_linespec_location (stringp); | |
5b56227b | 626 | } |
a06efdd6 KS |
627 | } |
628 | ||
c7c1b3e9 | 629 | return location; |
eeb1af43 KS |
630 | } |
631 | ||
632 | /* See description in location.h. */ | |
633 | ||
ffc2605c | 634 | event_location_up |
eeb1af43 KS |
635 | string_to_event_location (char **stringp, |
636 | const struct language_defn *language) | |
637 | { | |
eeb1af43 KS |
638 | const char *arg, *orig; |
639 | ||
640 | /* Try an explicit location. */ | |
641 | orig = arg = *stringp; | |
ffc2605c | 642 | event_location_up location = string_to_explicit_location (&arg, language, 0); |
eeb1af43 KS |
643 | if (location != NULL) |
644 | { | |
645 | /* It was a valid explicit location. Advance STRINGP to | |
646 | the end of input. */ | |
647 | *stringp += arg - orig; | |
648 | } | |
649 | else | |
650 | { | |
651 | /* Everything else is a "basic" linespec, address, or probe | |
652 | location. */ | |
653 | location = string_to_event_location_basic (stringp, language); | |
654 | } | |
655 | ||
656 | return location; | |
c7c1b3e9 KS |
657 | } |
658 | ||
659 | /* See description in location.h. */ | |
660 | ||
661 | int | |
662 | event_location_empty_p (const struct event_location *location) | |
663 | { | |
664 | switch (EL_TYPE (location)) | |
665 | { | |
666 | case LINESPEC_LOCATION: | |
667 | /* Linespecs are never "empty." (NULL is a valid linespec) */ | |
668 | return 0; | |
669 | ||
a06efdd6 KS |
670 | case ADDRESS_LOCATION: |
671 | return 0; | |
672 | ||
00e52e53 KS |
673 | case EXPLICIT_LOCATION: |
674 | return (EL_EXPLICIT (location) == NULL | |
675 | || (EL_EXPLICIT (location)->source_filename == NULL | |
676 | && EL_EXPLICIT (location)->function_name == NULL | |
677 | && EL_EXPLICIT (location)->label_name == NULL | |
678 | && (EL_EXPLICIT (location)->line_offset.sign | |
679 | == LINE_OFFSET_UNKNOWN))); | |
680 | ||
5b56227b KS |
681 | case PROBE_LOCATION: |
682 | return EL_PROBE (location) == NULL; | |
683 | ||
c7c1b3e9 KS |
684 | default: |
685 | gdb_assert_not_reached ("unknown event location type"); | |
686 | } | |
687 | } | |
688 | ||
689 | /* See description in location.h. */ | |
690 | ||
691 | void | |
692 | set_event_location_string (struct event_location *location, | |
693 | const char *string) | |
694 | { | |
695 | xfree (EL_STRING (location)); | |
696 | EL_STRING (location) = string == NULL ? NULL : xstrdup (string); | |
697 | } |