Commit | Line | Data |
---|---|---|
50641945 | 1 | /* Parser for linespec for the GNU debugger, GDB. |
05ff989b | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
0fb0cc75 JB |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
5 | 2009 Free Software Foundation, Inc. | |
50641945 FN |
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 |
50641945 FN |
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/>. */ |
50641945 FN |
21 | |
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
c5f0f3d0 FN |
24 | #include "frame.h" |
25 | #include "command.h" | |
50641945 FN |
26 | #include "symfile.h" |
27 | #include "objfiles.h" | |
0378c332 | 28 | #include "source.h" |
50641945 | 29 | #include "demangle.h" |
c5f0f3d0 FN |
30 | #include "value.h" |
31 | #include "completer.h" | |
015a42b4 | 32 | #include "cp-abi.h" |
c38da1af | 33 | #include "parser-defs.h" |
fe898f56 | 34 | #include "block.h" |
d2630e69 | 35 | #include "objc-lang.h" |
b9362cc7 | 36 | #include "linespec.h" |
05ff989b | 37 | #include "exceptions.h" |
53c5240f | 38 | #include "language.h" |
dc67126b NR |
39 | #include "interps.h" |
40 | #include "mi/mi-cmds.h" | |
bccdca4a | 41 | #include "target.h" |
50641945 FN |
42 | |
43 | /* We share this one with symtab.c, but it is not exported widely. */ | |
44 | ||
45 | extern char *operator_chars (char *, char **); | |
46 | ||
50641945 FN |
47 | /* Prototypes for local functions */ |
48 | ||
44fe14ab DC |
49 | static void initialize_defaults (struct symtab **default_symtab, |
50 | int *default_line); | |
51 | ||
636b1a6d DC |
52 | static void set_flags (char *arg, int *is_quoted, char **paren_pointer); |
53 | ||
44fe14ab DC |
54 | static struct symtabs_and_lines decode_indirect (char **argptr); |
55 | ||
0960f083 DC |
56 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
57 | ||
d2630e69 AF |
58 | static struct symtabs_and_lines decode_objc (char **argptr, |
59 | int funfirstline, | |
60 | struct symtab *file_symtab, | |
61 | char ***canonical, | |
62 | char *saved_arg); | |
63 | ||
614b3b14 DC |
64 | static struct symtabs_and_lines decode_compound (char **argptr, |
65 | int funfirstline, | |
66 | char ***canonical, | |
67 | char *saved_arg, | |
68 | char *p); | |
69 | ||
93d91629 DC |
70 | static struct symbol *lookup_prefix_sym (char **argptr, char *p); |
71 | ||
4224873a DC |
72 | static struct symtabs_and_lines find_method (int funfirstline, |
73 | char ***canonical, | |
74 | char *saved_arg, | |
75 | char *copy, | |
76 | struct type *t, | |
77 | struct symbol *sym_class); | |
78 | ||
614b3b14 DC |
79 | static NORETURN void cplusplus_error (const char *name, |
80 | const char *fmt, ...) | |
81 | ATTR_NORETURN ATTR_FORMAT (printf, 2, 3); | |
50641945 FN |
82 | |
83 | static int total_number_of_methods (struct type *type); | |
84 | ||
53c5240f PA |
85 | static int find_methods (struct type *, char *, |
86 | enum language, struct symbol **); | |
50641945 | 87 | |
aee8d8ba | 88 | static int add_matching_methods (int method_counter, struct type *t, |
53c5240f | 89 | enum language language, |
aee8d8ba DC |
90 | struct symbol **sym_arr); |
91 | ||
92 | static int add_constructors (int method_counter, struct type *t, | |
53c5240f | 93 | enum language language, |
aee8d8ba DC |
94 | struct symbol **sym_arr); |
95 | ||
50641945 FN |
96 | static void build_canonical_line_spec (struct symtab_and_line *, |
97 | char *, char ***); | |
98 | ||
99 | static char *find_toplevel_char (char *s, char c); | |
100 | ||
889f28e2 AF |
101 | static int is_objc_method_format (const char *s); |
102 | ||
50641945 FN |
103 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
104 | int, int, char ***); | |
105 | ||
f3c39e76 | 106 | static struct symtab *symtab_from_filename (char **argptr, |
68219205 JJ |
107 | char *p, int is_quote_enclosed, |
108 | int *not_found_ptr); | |
f3c39e76 | 109 | |
84fba31b DC |
110 | static struct |
111 | symtabs_and_lines decode_all_digits (char **argptr, | |
112 | struct symtab *default_symtab, | |
113 | int default_line, | |
114 | char ***canonical, | |
88d262ca | 115 | struct symtab *file_symtab, |
84fba31b DC |
116 | char *q); |
117 | ||
14e91ac5 DC |
118 | static struct symtabs_and_lines decode_dollar (char *copy, |
119 | int funfirstline, | |
120 | struct symtab *default_symtab, | |
121 | char ***canonical, | |
88d262ca | 122 | struct symtab *file_symtab); |
14e91ac5 | 123 | |
bca02a8a DC |
124 | static struct symtabs_and_lines decode_variable (char *copy, |
125 | int funfirstline, | |
126 | char ***canonical, | |
68219205 JJ |
127 | struct symtab *file_symtab, |
128 | int *not_found_ptr); | |
bca02a8a | 129 | |
413dad4d DC |
130 | static struct |
131 | symtabs_and_lines symbol_found (int funfirstline, | |
132 | char ***canonical, | |
133 | char *copy, | |
134 | struct symbol *sym, | |
2570f2b7 | 135 | struct symtab *file_symtab); |
413dad4d DC |
136 | |
137 | static struct | |
138 | symtabs_and_lines minsym_found (int funfirstline, | |
139 | struct minimal_symbol *msymbol); | |
140 | ||
50641945 FN |
141 | /* Helper functions. */ |
142 | ||
255e7dbf AC |
143 | /* Issue a helpful hint on using the command completion feature on |
144 | single quoted demangled C++ symbols as part of the completion | |
145 | error. */ | |
50641945 | 146 | |
614b3b14 | 147 | static NORETURN void |
255e7dbf | 148 | cplusplus_error (const char *name, const char *fmt, ...) |
50641945 | 149 | { |
255e7dbf AC |
150 | struct ui_file *tmp_stream; |
151 | tmp_stream = mem_fileopen (); | |
152 | make_cleanup_ui_file_delete (tmp_stream); | |
153 | ||
154 | { | |
155 | va_list args; | |
156 | va_start (args, fmt); | |
157 | vfprintf_unfiltered (tmp_stream, fmt, args); | |
158 | va_end (args); | |
159 | } | |
160 | ||
50641945 FN |
161 | while (*name == '\'') |
162 | name++; | |
255e7dbf AC |
163 | fprintf_unfiltered (tmp_stream, |
164 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" | |
165 | "(Note leading single quote.)"), | |
166 | name, name); | |
167 | error_stream (tmp_stream); | |
50641945 FN |
168 | } |
169 | ||
170 | /* Return the number of methods described for TYPE, including the | |
171 | methods from types it derives from. This can't be done in the symbol | |
172 | reader because the type of the baseclass might still be stubbed | |
173 | when the definition of the derived class is parsed. */ | |
174 | ||
175 | static int | |
176 | total_number_of_methods (struct type *type) | |
177 | { | |
178 | int n; | |
179 | int count; | |
180 | ||
181 | CHECK_TYPEDEF (type); | |
182 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
183 | return 0; | |
184 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
185 | ||
186 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
187 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
188 | ||
189 | return count; | |
190 | } | |
191 | ||
192 | /* Recursive helper function for decode_line_1. | |
193 | Look for methods named NAME in type T. | |
194 | Return number of matches. | |
195 | Put matches in SYM_ARR, which should have been allocated with | |
196 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
197 | Note that this function is g++ specific. */ | |
198 | ||
199 | static int | |
53c5240f PA |
200 | find_methods (struct type *t, char *name, enum language language, |
201 | struct symbol **sym_arr) | |
50641945 FN |
202 | { |
203 | int i1 = 0; | |
204 | int ibase; | |
50641945 FN |
205 | char *class_name = type_name_no_tag (t); |
206 | ||
207 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
208 | unless we figure out how to get the physname without the name of | |
209 | the class, then the loop can't do any good. */ | |
210 | if (class_name | |
53c5240f | 211 | && (lookup_symbol_in_language (class_name, (struct block *) NULL, |
2570f2b7 | 212 | STRUCT_DOMAIN, language, (int *) NULL))) |
50641945 FN |
213 | { |
214 | int method_counter; | |
5c717440 | 215 | int name_len = strlen (name); |
50641945 | 216 | |
8bd1f2c6 | 217 | CHECK_TYPEDEF (t); |
50641945 FN |
218 | |
219 | /* Loop over each method name. At this level, all overloads of a name | |
220 | are counted as a single name. There is an inner loop which loops over | |
221 | each overload. */ | |
222 | ||
223 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
224 | method_counter >= 0; | |
225 | --method_counter) | |
226 | { | |
50641945 FN |
227 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
228 | char dem_opname[64]; | |
229 | ||
230 | if (strncmp (method_name, "__", 2) == 0 || | |
231 | strncmp (method_name, "op", 2) == 0 || | |
232 | strncmp (method_name, "type", 4) == 0) | |
233 | { | |
234 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
235 | method_name = dem_opname; | |
236 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
237 | method_name = dem_opname; | |
238 | } | |
239 | ||
13b57657 | 240 | if (strcmp_iw (name, method_name) == 0) |
50641945 | 241 | /* Find all the overloaded methods with that name. */ |
53c5240f | 242 | i1 += add_matching_methods (method_counter, t, language, |
aee8d8ba | 243 | sym_arr + i1); |
5c717440 DJ |
244 | else if (strncmp (class_name, name, name_len) == 0 |
245 | && (class_name[name_len] == '\0' | |
246 | || class_name[name_len] == '<')) | |
53c5240f | 247 | i1 += add_constructors (method_counter, t, language, |
aee8d8ba | 248 | sym_arr + i1); |
50641945 FN |
249 | } |
250 | } | |
251 | ||
252 | /* Only search baseclasses if there is no match yet, since names in | |
253 | derived classes override those in baseclasses. | |
254 | ||
255 | FIXME: The above is not true; it is only true of member functions | |
256 | if they have the same number of arguments (??? - section 13.1 of the | |
257 | ARM says the function members are not in the same scope but doesn't | |
258 | really spell out the rules in a way I understand. In any case, if | |
259 | the number of arguments differ this is a case in which we can overload | |
260 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
261 | rather than hiding in this case). */ | |
262 | ||
263 | if (i1 == 0) | |
264 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
53c5240f PA |
265 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, |
266 | language, sym_arr + i1); | |
50641945 FN |
267 | |
268 | return i1; | |
269 | } | |
270 | ||
aee8d8ba DC |
271 | /* Add the symbols associated to methods of the class whose type is T |
272 | and whose name matches the method indexed by METHOD_COUNTER in the | |
273 | array SYM_ARR. Return the number of methods added. */ | |
274 | ||
275 | static int | |
276 | add_matching_methods (int method_counter, struct type *t, | |
53c5240f | 277 | enum language language, struct symbol **sym_arr) |
aee8d8ba DC |
278 | { |
279 | int field_counter; | |
280 | int i1 = 0; | |
281 | ||
282 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
283 | field_counter >= 0; | |
284 | --field_counter) | |
285 | { | |
286 | struct fn_field *f; | |
287 | char *phys_name; | |
288 | ||
289 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
290 | ||
291 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
292 | { | |
293 | char *tmp_name; | |
294 | ||
295 | tmp_name = gdb_mangle_name (t, | |
296 | method_counter, | |
297 | field_counter); | |
298 | phys_name = alloca (strlen (tmp_name) + 1); | |
299 | strcpy (phys_name, tmp_name); | |
300 | xfree (tmp_name); | |
301 | } | |
302 | else | |
303 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
53c5240f | 304 | |
53c5240f | 305 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
aee8d8ba | 306 | NULL, VAR_DOMAIN, |
53c5240f | 307 | language, |
2570f2b7 | 308 | (int *) NULL); |
aee8d8ba DC |
309 | if (sym_arr[i1]) |
310 | i1++; | |
311 | else | |
312 | { | |
313 | /* This error message gets printed, but the method | |
314 | still seems to be found | |
315 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
316 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
317 | language_cplus, | |
318 | DMGL_PARAMS | DMGL_ANSI); | |
319 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
320 | */ | |
321 | } | |
322 | } | |
323 | ||
324 | return i1; | |
325 | } | |
326 | ||
327 | /* Add the symbols associated to constructors of the class whose type | |
328 | is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the | |
329 | array SYM_ARR. Return the number of methods added. */ | |
330 | ||
331 | static int | |
332 | add_constructors (int method_counter, struct type *t, | |
53c5240f | 333 | enum language language, struct symbol **sym_arr) |
aee8d8ba DC |
334 | { |
335 | int field_counter; | |
336 | int i1 = 0; | |
337 | ||
338 | /* For GCC 3.x and stabs, constructors and destructors | |
339 | have names like __base_ctor and __complete_dtor. | |
340 | Check the physname for now if we're looking for a | |
341 | constructor. */ | |
342 | for (field_counter | |
343 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
344 | field_counter >= 0; | |
345 | --field_counter) | |
346 | { | |
347 | struct fn_field *f; | |
348 | char *phys_name; | |
53c5240f | 349 | |
aee8d8ba DC |
350 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
351 | ||
352 | /* GCC 3.x will never produce stabs stub methods, so | |
353 | we don't need to handle this case. */ | |
354 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
355 | continue; | |
356 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
357 | if (! is_constructor_name (phys_name)) | |
358 | continue; | |
359 | ||
360 | /* If this method is actually defined, include it in the | |
361 | list. */ | |
53c5240f | 362 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
aee8d8ba | 363 | NULL, VAR_DOMAIN, |
53c5240f | 364 | language, |
2570f2b7 | 365 | (int *) NULL); |
aee8d8ba DC |
366 | if (sym_arr[i1]) |
367 | i1++; | |
368 | } | |
369 | ||
370 | return i1; | |
371 | } | |
372 | ||
50641945 FN |
373 | /* Helper function for decode_line_1. |
374 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
375 | the SAL has a symtab. | |
376 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
377 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
378 | line spec is `filename:linenum'. */ | |
379 | ||
380 | static void | |
381 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
382 | char ***canonical) | |
383 | { | |
384 | char **canonical_arr; | |
385 | char *canonical_name; | |
386 | char *filename; | |
387 | struct symtab *s = sal->symtab; | |
388 | ||
389 | if (s == (struct symtab *) NULL | |
390 | || s->filename == (char *) NULL | |
391 | || canonical == (char ***) NULL) | |
392 | return; | |
393 | ||
394 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
395 | *canonical = canonical_arr; | |
396 | ||
397 | filename = s->filename; | |
398 | if (symname != NULL) | |
399 | { | |
400 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
401 | sprintf (canonical_name, "%s:%s", filename, symname); | |
402 | } | |
403 | else | |
404 | { | |
405 | canonical_name = xmalloc (strlen (filename) + 30); | |
406 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
407 | } | |
408 | canonical_arr[0] = canonical_name; | |
409 | } | |
410 | ||
411 | ||
412 | ||
413 | /* Find an instance of the character C in the string S that is outside | |
414 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
8120c9d5 EZ |
415 | strings. Also, ignore the char within a template name, like a ',' |
416 | within foo<int, int>. */ | |
417 | ||
50641945 FN |
418 | static char * |
419 | find_toplevel_char (char *s, char c) | |
420 | { | |
421 | int quoted = 0; /* zero if we're not in quotes; | |
422 | '"' if we're in a double-quoted string; | |
423 | '\'' if we're in a single-quoted string. */ | |
a04257e6 | 424 | int depth = 0; /* Number of unclosed parens we've seen. */ |
50641945 FN |
425 | char *scan; |
426 | ||
427 | for (scan = s; *scan; scan++) | |
428 | { | |
429 | if (quoted) | |
430 | { | |
431 | if (*scan == quoted) | |
432 | quoted = 0; | |
433 | else if (*scan == '\\' && *(scan + 1)) | |
434 | scan++; | |
435 | } | |
436 | else if (*scan == c && ! quoted && depth == 0) | |
437 | return scan; | |
438 | else if (*scan == '"' || *scan == '\'') | |
439 | quoted = *scan; | |
8120c9d5 | 440 | else if (*scan == '(' || *scan == '<') |
50641945 | 441 | depth++; |
8120c9d5 | 442 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
50641945 FN |
443 | depth--; |
444 | } | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
889f28e2 AF |
449 | /* Determines if the gives string corresponds to an Objective-C method |
450 | representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols | |
451 | are allowed to have spaces and parentheses in them. */ | |
452 | ||
453 | static int | |
454 | is_objc_method_format (const char *s) | |
455 | { | |
456 | if (s == NULL || *s == '\0') | |
457 | return 0; | |
458 | /* Handle arguments with the format FILENAME:SYMBOL. */ | |
459 | if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL) | |
460 | && (s[2] == '[') && strchr(s, ']')) | |
461 | return 1; | |
462 | /* Handle arguments that are just SYMBOL. */ | |
463 | else if ((strchr ("+-", s[0]) != NULL) && (s[1] == '[') && strchr(s, ']')) | |
464 | return 1; | |
465 | return 0; | |
466 | } | |
467 | ||
50641945 FN |
468 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
469 | operate on (ask user if necessary). | |
470 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
471 | as canonical line specs there. */ | |
472 | ||
473 | static struct symtabs_and_lines | |
474 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
475 | char ***canonical) | |
476 | { | |
477 | struct symtabs_and_lines values, return_values; | |
478 | char *args, *arg1; | |
479 | int i; | |
480 | char *prompt; | |
481 | char *symname; | |
482 | struct cleanup *old_chain; | |
483 | char **canonical_arr = (char **) NULL; | |
717d2f5a | 484 | const char *select_mode = multiple_symbols_select_mode (); |
50641945 | 485 | |
717d2f5a JB |
486 | if (select_mode == multiple_symbols_cancel) |
487 | error (_("\ | |
488 | canceled because the command is ambiguous\n\ | |
489 | See set/show multiple-symbol.")); | |
490 | ||
50641945 FN |
491 | values.sals = (struct symtab_and_line *) |
492 | alloca (nelts * sizeof (struct symtab_and_line)); | |
493 | return_values.sals = (struct symtab_and_line *) | |
494 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 495 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
496 | |
497 | if (canonical) | |
498 | { | |
499 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 500 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
501 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
502 | *canonical = canonical_arr; | |
503 | } | |
504 | ||
505 | i = 0; | |
50641945 FN |
506 | while (i < nelts) |
507 | { | |
a04257e6 | 508 | init_sal (&return_values.sals[i]); /* Initialize to zeroes. */ |
fe39c653 | 509 | init_sal (&values.sals[i]); |
50641945 | 510 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
717d2f5a | 511 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); |
50641945 FN |
512 | i++; |
513 | } | |
514 | ||
717d2f5a JB |
515 | /* If select_mode is "all", then do not print the multiple-choice |
516 | menu and act as if the user had chosen choice "1" (all). */ | |
dc67126b NR |
517 | if (select_mode == multiple_symbols_all |
518 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) | |
717d2f5a JB |
519 | args = "1"; |
520 | else | |
50641945 | 521 | { |
717d2f5a JB |
522 | i = 0; |
523 | printf_unfiltered (_("[0] cancel\n[1] all\n")); | |
524 | while (i < nelts) | |
525 | { | |
526 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) | |
527 | { | |
528 | if (values.sals[i].symtab) | |
529 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
530 | (i + 2), | |
531 | SYMBOL_PRINT_NAME (sym_arr[i]), | |
532 | values.sals[i].symtab->filename, | |
533 | values.sals[i].line); | |
534 | else | |
535 | printf_unfiltered (_("[%d] %s at ?FILE:%d [No symtab? Probably broken debug info...]\n"), | |
536 | (i + 2), | |
537 | SYMBOL_PRINT_NAME (sym_arr[i]), | |
538 | values.sals[i].line); | |
539 | ||
540 | } | |
541 | else | |
542 | printf_unfiltered (_("?HERE\n")); | |
543 | i++; | |
544 | } | |
545 | ||
546 | prompt = getenv ("PS2"); | |
547 | if (prompt == NULL) | |
548 | { | |
549 | prompt = "> "; | |
550 | } | |
551 | args = command_line_input (prompt, 0, "overload-choice"); | |
50641945 | 552 | } |
50641945 FN |
553 | |
554 | if (args == 0 || *args == 0) | |
e2e0b3e5 | 555 | error_no_arg (_("one or more choice numbers")); |
50641945 FN |
556 | |
557 | i = 0; | |
558 | while (*args) | |
559 | { | |
560 | int num; | |
561 | ||
562 | arg1 = args; | |
563 | while (*arg1 >= '0' && *arg1 <= '9') | |
564 | arg1++; | |
565 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
8a3fe4f8 | 566 | error (_("Arguments must be choice numbers.")); |
50641945 FN |
567 | |
568 | num = atoi (args); | |
569 | ||
570 | if (num == 0) | |
8a3fe4f8 | 571 | error (_("canceled")); |
50641945 FN |
572 | else if (num == 1) |
573 | { | |
574 | if (canonical_arr) | |
575 | { | |
576 | for (i = 0; i < nelts; i++) | |
577 | { | |
578 | if (canonical_arr[i] == NULL) | |
579 | { | |
3567439c | 580 | symname = SYMBOL_LINKAGE_NAME (sym_arr[i]); |
1b36a34b | 581 | canonical_arr[i] = xstrdup (symname); |
50641945 FN |
582 | } |
583 | } | |
584 | } | |
585 | memcpy (return_values.sals, values.sals, | |
586 | (nelts * sizeof (struct symtab_and_line))); | |
587 | return_values.nelts = nelts; | |
588 | discard_cleanups (old_chain); | |
589 | return return_values; | |
590 | } | |
591 | ||
592 | if (num >= nelts + 2) | |
593 | { | |
a3f17187 | 594 | printf_unfiltered (_("No choice number %d.\n"), num); |
50641945 FN |
595 | } |
596 | else | |
597 | { | |
598 | num -= 2; | |
599 | if (values.sals[num].pc) | |
600 | { | |
601 | if (canonical_arr) | |
602 | { | |
3567439c | 603 | symname = SYMBOL_LINKAGE_NAME (sym_arr[num]); |
b8c9b27d | 604 | make_cleanup (xfree, symname); |
1b36a34b | 605 | canonical_arr[i] = xstrdup (symname); |
50641945 FN |
606 | } |
607 | return_values.sals[i++] = values.sals[num]; | |
608 | values.sals[num].pc = 0; | |
609 | } | |
610 | else | |
611 | { | |
a3f17187 | 612 | printf_unfiltered (_("duplicate request for %d ignored.\n"), num); |
50641945 FN |
613 | } |
614 | } | |
615 | ||
616 | args = arg1; | |
617 | while (*args == ' ' || *args == '\t') | |
618 | args++; | |
619 | } | |
620 | return_values.nelts = i; | |
621 | discard_cleanups (old_chain); | |
622 | return return_values; | |
623 | } | |
624 | \f | |
625 | /* The parser of linespec itself. */ | |
626 | ||
627 | /* Parse a string that specifies a line number. | |
628 | Pass the address of a char * variable; that variable will be | |
629 | advanced over the characters actually parsed. | |
630 | ||
631 | The string can be: | |
632 | ||
633 | LINENUM -- that line number in current file. PC returned is 0. | |
634 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
635 | FUNCTION -- line number of openbrace of that function. | |
636 | PC returned is the start of the function. | |
637 | VARIABLE -- line number of definition of that variable. | |
638 | PC returned is 0. | |
639 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
640 | *EXPR -- line in which address EXPR appears. | |
641 | ||
642 | This may all be followed by an "if EXPR", which we ignore. | |
643 | ||
644 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
645 | ||
646 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
647 | of real code inside a function when a function is specified, and it is | |
648 | not OK to specify a variable or type to get its line number. | |
649 | ||
650 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
651 | It defaults to current_source_symtab. | |
652 | DEFAULT_LINE specifies the line number to use for relative | |
653 | line numbers (that start with signs). Defaults to current_source_line. | |
654 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
655 | line specs there if necessary. Currently overloaded member functions and | |
656 | line numbers or static functions without a filename yield a canonical | |
657 | line spec. The array and the line spec strings are allocated on the heap, | |
658 | it is the callers responsibility to free them. | |
659 | ||
660 | Note that it is possible to return zero for the symtab | |
661 | if no file is validly specified. Callers must check that. | |
68219205 JJ |
662 | Also, the line number returned may be invalid. |
663 | ||
664 | If NOT_FOUND_PTR is not null, store a boolean true/false value at the location, based | |
665 | on whether or not failure occurs due to an unknown function or file. In the case | |
666 | where failure does occur due to an unknown function or file, do not issue an error | |
667 | message. */ | |
50641945 FN |
668 | |
669 | /* We allow single quotes in various places. This is a hideous | |
670 | kludge, which exists because the completer can't yet deal with the | |
671 | lack of single quotes. FIXME: write a linespec_completer which we | |
672 | can use as appropriate instead of make_symbol_completion_list. */ | |
673 | ||
674 | struct symtabs_and_lines | |
675 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
68219205 | 676 | int default_line, char ***canonical, int *not_found_ptr) |
50641945 | 677 | { |
f3c39e76 | 678 | char *p; |
614b3b14 | 679 | char *q; |
88d262ca DC |
680 | /* If a file name is specified, this is its symtab. */ |
681 | struct symtab *file_symtab = NULL; | |
50641945 | 682 | |
50641945 | 683 | char *copy; |
636b1a6d DC |
684 | /* This is NULL if there are no parens in *ARGPTR, or a pointer to |
685 | the closing parenthesis if there are parens. */ | |
686 | char *paren_pointer; | |
687 | /* This says whether or not something in *ARGPTR is quoted with | |
688 | completer_quotes (i.e. with single quotes). */ | |
50641945 | 689 | int is_quoted; |
0960f083 | 690 | /* Is part of *ARGPTR is enclosed in double quotes? */ |
50641945 | 691 | int is_quote_enclosed; |
d2630e69 | 692 | int is_objc_method = 0; |
50641945 | 693 | char *saved_arg = *argptr; |
50641945 | 694 | |
68219205 JJ |
695 | if (not_found_ptr) |
696 | *not_found_ptr = 0; | |
697 | ||
50641945 FN |
698 | /* Defaults have defaults. */ |
699 | ||
44fe14ab DC |
700 | initialize_defaults (&default_symtab, &default_line); |
701 | ||
a04257e6 | 702 | /* See if arg is *PC. */ |
50641945 FN |
703 | |
704 | if (**argptr == '*') | |
44fe14ab | 705 | return decode_indirect (argptr); |
50641945 | 706 | |
a04257e6 DC |
707 | /* Set various flags. 'paren_pointer' is important for overload |
708 | checking, where we allow things like: | |
709 | (gdb) break c::f(int) | |
710 | */ | |
50641945 | 711 | |
636b1a6d | 712 | set_flags (*argptr, &is_quoted, &paren_pointer); |
50641945 | 713 | |
0960f083 DC |
714 | /* Check to see if it's a multipart linespec (with colons or |
715 | periods). */ | |
50641945 | 716 | |
17763fd9 EZ |
717 | /* Locate the end of the first half of the linespec. |
718 | After the call, for instance, if the argptr string is "foo.c:123" | |
719 | p will point at "123". If there is only one part, like "foo", p | |
720 | will point to "". If this is a C++ name, like "A::B::foo", p will | |
721 | point to "::B::foo". Argptr is not changed by this call. */ | |
50641945 | 722 | |
0960f083 | 723 | p = locate_first_half (argptr, &is_quote_enclosed); |
50641945 | 724 | |
d2630e69 AF |
725 | /* Check if this is an Objective-C method (anything that starts with |
726 | a '+' or '-' and a '['). */ | |
889f28e2 | 727 | if (is_objc_method_format (p)) |
d2630e69 AF |
728 | { |
729 | is_objc_method = 1; | |
730 | paren_pointer = NULL; /* Just a category name. Ignore it. */ | |
731 | } | |
732 | ||
733 | /* Check if the symbol could be an Objective-C selector. */ | |
734 | ||
735 | { | |
736 | struct symtabs_and_lines values; | |
737 | values = decode_objc (argptr, funfirstline, NULL, | |
738 | canonical, saved_arg); | |
739 | if (values.sals != NULL) | |
740 | return values; | |
741 | } | |
742 | ||
0960f083 | 743 | /* Does it look like there actually were two parts? */ |
50641945 | 744 | |
636b1a6d | 745 | if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL) |
50641945 | 746 | { |
50641945 FN |
747 | if (is_quoted) |
748 | *argptr = *argptr + 1; | |
f3c39e76 | 749 | |
17763fd9 EZ |
750 | /* Is it a C++ or Java compound data structure? |
751 | The check on p[1] == ':' is capturing the case of "::", | |
752 | since p[0]==':' was checked above. | |
753 | Note that the call to decode_compound does everything | |
754 | for us, including the lookup on the symbol table, so we | |
755 | can return now. */ | |
756 | ||
50641945 | 757 | if (p[0] == '.' || p[1] == ':') |
614b3b14 DC |
758 | return decode_compound (argptr, funfirstline, canonical, |
759 | saved_arg, p); | |
50641945 | 760 | |
bc882aa9 | 761 | /* No, the first part is a filename; set file_symtab to be that file's |
f3c39e76 | 762 | symtab. Also, move argptr past the filename. */ |
50641945 | 763 | |
68219205 JJ |
764 | file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed, |
765 | not_found_ptr); | |
50641945 FN |
766 | } |
767 | #if 0 | |
768 | /* No one really seems to know why this was added. It certainly | |
769 | breaks the command line, though, whenever the passed | |
770 | name is of the form ClassName::Method. This bit of code | |
771 | singles out the class name, and if funfirstline is set (for | |
772 | example, you are setting a breakpoint at this function), | |
773 | you get an error. This did not occur with earlier | |
774 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
775 | else | |
776 | { | |
777 | /* Check if what we have till now is a symbol name */ | |
778 | ||
779 | /* We may be looking at a template instantiation such | |
780 | as "foo<int>". Check here whether we know about it, | |
781 | instead of falling through to the code below which | |
782 | handles ordinary function names, because that code | |
783 | doesn't like seeing '<' and '>' in a name -- the | |
784 | skip_quoted call doesn't go past them. So see if we | |
785 | can figure it out right now. */ | |
786 | ||
787 | copy = (char *) alloca (p - *argptr + 1); | |
788 | memcpy (copy, *argptr, p - *argptr); | |
789 | copy[p - *argptr] = '\000'; | |
2570f2b7 | 790 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
50641945 FN |
791 | if (sym) |
792 | { | |
50641945 | 793 | *argptr = (*p == '\'') ? p + 1 : p; |
2570f2b7 | 794 | return symbol_found (funfirstline, canonical, copy, sym, NULL); |
50641945 FN |
795 | } |
796 | /* Otherwise fall out from here and go to file/line spec | |
797 | processing, etc. */ | |
798 | } | |
799 | #endif | |
800 | ||
bc882aa9 | 801 | /* file_symtab is specified file's symtab, or 0 if no file specified. |
50641945 FN |
802 | arg no longer contains the file name. */ |
803 | ||
a04257e6 | 804 | /* Check whether arg is all digits (and sign). */ |
50641945 FN |
805 | |
806 | q = *argptr; | |
807 | if (*q == '-' || *q == '+') | |
808 | q++; | |
809 | while (*q >= '0' && *q <= '9') | |
810 | q++; | |
811 | ||
812 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
84fba31b DC |
813 | /* We found a token consisting of all digits -- at least one digit. */ |
814 | return decode_all_digits (argptr, default_symtab, default_line, | |
88d262ca | 815 | canonical, file_symtab, q); |
50641945 FN |
816 | |
817 | /* Arg token is not digits => try it as a variable name | |
818 | Find the next token (everything up to end or next whitespace). */ | |
819 | ||
a04257e6 DC |
820 | if (**argptr == '$') /* May be a convenience variable. */ |
821 | /* One or two $ chars possible. */ | |
822 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); | |
50641945 FN |
823 | else if (is_quoted) |
824 | { | |
825 | p = skip_quoted (*argptr); | |
826 | if (p[-1] != '\'') | |
8a3fe4f8 | 827 | error (_("Unmatched single quote.")); |
50641945 | 828 | } |
d2630e69 AF |
829 | else if (is_objc_method) |
830 | { | |
831 | /* allow word separators in method names for Obj-C */ | |
832 | p = skip_quoted_chars (*argptr, NULL, ""); | |
833 | } | |
636b1a6d | 834 | else if (paren_pointer != NULL) |
50641945 | 835 | { |
636b1a6d | 836 | p = paren_pointer + 1; |
50641945 FN |
837 | } |
838 | else | |
839 | { | |
840 | p = skip_quoted (*argptr); | |
841 | } | |
842 | ||
19ef5c71 KS |
843 | /* Keep any template parameters */ |
844 | if (*p == '<') | |
845 | p = find_template_name_end (p); | |
846 | ||
50641945 FN |
847 | copy = (char *) alloca (p - *argptr + 1); |
848 | memcpy (copy, *argptr, p - *argptr); | |
849 | copy[p - *argptr] = '\0'; | |
850 | if (p != *argptr | |
851 | && copy[0] | |
852 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 853 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
854 | { |
855 | copy[p - *argptr - 1] = '\0'; | |
856 | copy++; | |
857 | } | |
858 | while (*p == ' ' || *p == '\t') | |
859 | p++; | |
860 | *argptr = p; | |
861 | ||
862 | /* If it starts with $: may be a legitimate variable or routine name | |
863 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
a04257e6 | 864 | be history value, or it may be a convenience variable. */ |
50641945 FN |
865 | |
866 | if (*copy == '$') | |
14e91ac5 | 867 | return decode_dollar (copy, funfirstline, default_symtab, |
88d262ca | 868 | canonical, file_symtab); |
50641945 FN |
869 | |
870 | /* Look up that token as a variable. | |
871 | If file specified, use that file's per-file block to start with. */ | |
872 | ||
68219205 JJ |
873 | return decode_variable (copy, funfirstline, canonical, |
874 | file_symtab, not_found_ptr); | |
413dad4d | 875 | } |
50641945 | 876 | |
44fe14ab DC |
877 | \f |
878 | ||
614b3b14 DC |
879 | /* Now, more helper functions for decode_line_1. Some conventions |
880 | that these functions follow: | |
881 | ||
882 | Decode_line_1 typically passes along some of its arguments or local | |
883 | variables to the subfunctions. It passes the variables by | |
884 | reference if they are modified by the subfunction, and by value | |
885 | otherwise. | |
886 | ||
887 | Some of the functions have side effects that don't arise from | |
888 | variables that are passed by reference. In particular, if a | |
889 | function is passed ARGPTR as an argument, it modifies what ARGPTR | |
890 | points to; typically, it advances *ARGPTR past whatever substring | |
891 | it has just looked at. (If it doesn't modify *ARGPTR, then the | |
892 | function gets passed *ARGPTR instead, which is then called ARG: see | |
893 | set_flags, for example.) Also, functions that return a struct | |
894 | symtabs_and_lines may modify CANONICAL, as in the description of | |
895 | decode_line_1. | |
896 | ||
897 | If a function returns a struct symtabs_and_lines, then that struct | |
898 | will immediately make its way up the call chain to be returned by | |
899 | decode_line_1. In particular, all of the functions decode_XXX | |
900 | calculate the appropriate struct symtabs_and_lines, under the | |
901 | assumption that their argument is of the form XXX. */ | |
44fe14ab DC |
902 | |
903 | /* First, some functions to initialize stuff at the beggining of the | |
904 | function. */ | |
905 | ||
906 | static void | |
907 | initialize_defaults (struct symtab **default_symtab, int *default_line) | |
908 | { | |
909 | if (*default_symtab == 0) | |
910 | { | |
911 | /* Use whatever we have for the default source line. We don't use | |
912 | get_current_or_default_symtab_and_line as it can recurse and call | |
913 | us back! */ | |
914 | struct symtab_and_line cursal = | |
915 | get_current_source_symtab_and_line (); | |
916 | ||
917 | *default_symtab = cursal.symtab; | |
918 | *default_line = cursal.line; | |
919 | } | |
920 | } | |
921 | ||
636b1a6d DC |
922 | static void |
923 | set_flags (char *arg, int *is_quoted, char **paren_pointer) | |
924 | { | |
925 | char *ii; | |
926 | int has_if = 0; | |
927 | ||
928 | /* 'has_if' is for the syntax: | |
a04257e6 DC |
929 | (gdb) break foo if (a==b) |
930 | */ | |
636b1a6d DC |
931 | if ((ii = strstr (arg, " if ")) != NULL || |
932 | (ii = strstr (arg, "\tif ")) != NULL || | |
933 | (ii = strstr (arg, " if\t")) != NULL || | |
934 | (ii = strstr (arg, "\tif\t")) != NULL || | |
935 | (ii = strstr (arg, " if(")) != NULL || | |
936 | (ii = strstr (arg, "\tif( ")) != NULL) | |
937 | has_if = 1; | |
a04257e6 DC |
938 | /* Temporarily zap out "if (condition)" to not confuse the |
939 | parenthesis-checking code below. This is undone below. Do not | |
940 | change ii!! */ | |
636b1a6d DC |
941 | if (has_if) |
942 | { | |
943 | *ii = '\0'; | |
944 | } | |
945 | ||
946 | *is_quoted = (*arg | |
947 | && strchr (get_gdb_completer_quote_characters (), | |
948 | *arg) != NULL); | |
949 | ||
950 | *paren_pointer = strchr (arg, '('); | |
951 | if (*paren_pointer != NULL) | |
952 | *paren_pointer = strrchr (*paren_pointer, ')'); | |
953 | ||
a04257e6 DC |
954 | /* Now that we're safely past the paren_pointer check, put back " if |
955 | (condition)" so outer layers can see it. */ | |
636b1a6d DC |
956 | if (has_if) |
957 | *ii = ' '; | |
958 | } | |
959 | ||
44fe14ab DC |
960 | \f |
961 | ||
962 | /* Decode arg of the form *PC. */ | |
963 | ||
964 | static struct symtabs_and_lines | |
965 | decode_indirect (char **argptr) | |
966 | { | |
967 | struct symtabs_and_lines values; | |
968 | CORE_ADDR pc; | |
969 | ||
970 | (*argptr)++; | |
971 | pc = parse_and_eval_address_1 (argptr); | |
972 | ||
973 | values.sals = (struct symtab_and_line *) | |
974 | xmalloc (sizeof (struct symtab_and_line)); | |
975 | ||
976 | values.nelts = 1; | |
977 | values.sals[0] = find_pc_line (pc, 0); | |
978 | values.sals[0].pc = pc; | |
979 | values.sals[0].section = find_pc_overlay (pc); | |
ed0616c6 | 980 | values.sals[0].explicit_pc = 1; |
44fe14ab DC |
981 | |
982 | return values; | |
983 | } | |
413dad4d DC |
984 | |
985 | \f | |
986 | ||
0960f083 DC |
987 | /* Locate the first half of the linespec, ending in a colon, period, |
988 | or whitespace. (More or less.) Also, check to see if *ARGPTR is | |
989 | enclosed in double quotes; if so, set is_quote_enclosed, advance | |
17763fd9 EZ |
990 | ARGPTR past that and zero out the trailing double quote. |
991 | If ARGPTR is just a simple name like "main", p will point to "" | |
992 | at the end. */ | |
0960f083 DC |
993 | |
994 | static char * | |
995 | locate_first_half (char **argptr, int *is_quote_enclosed) | |
996 | { | |
997 | char *ii; | |
998 | char *p, *p1; | |
999 | int has_comma; | |
1000 | ||
1001 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
1002 | and we must isolate the first half. Outer layers will call again later | |
1003 | for the second half. | |
1004 | ||
1005 | Don't count commas that appear in argument lists of overloaded | |
1006 | functions, or in quoted strings. It's stupid to go to this much | |
1007 | trouble when the rest of the function is such an obvious roach hotel. */ | |
1008 | ii = find_toplevel_char (*argptr, ','); | |
1009 | has_comma = (ii != 0); | |
1010 | ||
a04257e6 DC |
1011 | /* Temporarily zap out second half to not confuse the code below. |
1012 | This is undone below. Do not change ii!! */ | |
0960f083 DC |
1013 | if (has_comma) |
1014 | { | |
1015 | *ii = '\0'; | |
1016 | } | |
1017 | ||
a04257e6 DC |
1018 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
1019 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore | |
1020 | inside of <>. */ | |
0960f083 DC |
1021 | |
1022 | p = *argptr; | |
1023 | if (p[0] == '"') | |
1024 | { | |
1025 | *is_quote_enclosed = 1; | |
1026 | (*argptr)++; | |
1027 | p++; | |
1028 | } | |
1029 | else | |
1030 | *is_quote_enclosed = 0; | |
1031 | for (; *p; p++) | |
1032 | { | |
1033 | if (p[0] == '<') | |
1034 | { | |
1035 | char *temp_end = find_template_name_end (p); | |
1036 | if (!temp_end) | |
8a3fe4f8 | 1037 | error (_("malformed template specification in command")); |
0960f083 DC |
1038 | p = temp_end; |
1039 | } | |
d2630e69 AF |
1040 | /* Check for a colon and a plus or minus and a [ (which |
1041 | indicates an Objective-C method) */ | |
889f28e2 | 1042 | if (is_objc_method_format (p)) |
d2630e69 AF |
1043 | { |
1044 | break; | |
1045 | } | |
a04257e6 DC |
1046 | /* Check for the end of the first half of the linespec. End of |
1047 | line, a tab, a double colon or the last single colon, or a | |
1048 | space. But if enclosed in double quotes we do not break on | |
1049 | enclosed spaces. */ | |
0960f083 DC |
1050 | if (!*p |
1051 | || p[0] == '\t' | |
1052 | || ((p[0] == ':') | |
1053 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
1054 | || ((p[0] == ' ') && !*is_quote_enclosed)) | |
1055 | break; | |
a04257e6 | 1056 | if (p[0] == '.' && strchr (p, ':') == NULL) |
0960f083 | 1057 | { |
a04257e6 DC |
1058 | /* Java qualified method. Find the *last* '.', since the |
1059 | others are package qualifiers. */ | |
0960f083 DC |
1060 | for (p1 = p; *p1; p1++) |
1061 | { | |
1062 | if (*p1 == '.') | |
1063 | p = p1; | |
1064 | } | |
1065 | break; | |
1066 | } | |
1067 | } | |
1068 | while (p[0] == ' ' || p[0] == '\t') | |
1069 | p++; | |
1070 | ||
a04257e6 | 1071 | /* If the closing double quote was left at the end, remove it. */ |
0960f083 DC |
1072 | if (*is_quote_enclosed) |
1073 | { | |
1074 | char *closing_quote = strchr (p - 1, '"'); | |
1075 | if (closing_quote && closing_quote[1] == '\0') | |
1076 | *closing_quote = '\0'; | |
1077 | } | |
1078 | ||
a04257e6 DC |
1079 | /* Now that we've safely parsed the first half, put back ',' so |
1080 | outer layers can see it. */ | |
0960f083 DC |
1081 | if (has_comma) |
1082 | *ii = ','; | |
1083 | ||
1084 | return p; | |
1085 | } | |
1086 | ||
1087 | \f | |
1088 | ||
d2630e69 AF |
1089 | /* Here's where we recognise an Objective-C Selector. An Objective C |
1090 | selector may be implemented by more than one class, therefore it | |
1091 | may represent more than one method/function. This gives us a | |
1092 | situation somewhat analogous to C++ overloading. If there's more | |
1093 | than one method that could represent the selector, then use some of | |
1094 | the existing C++ code to let the user choose one. */ | |
1095 | ||
1096 | struct symtabs_and_lines | |
1097 | decode_objc (char **argptr, int funfirstline, struct symtab *file_symtab, | |
1098 | char ***canonical, char *saved_arg) | |
1099 | { | |
1100 | struct symtabs_and_lines values; | |
1101 | struct symbol **sym_arr = NULL; | |
1102 | struct symbol *sym = NULL; | |
1103 | char *copy = NULL; | |
1104 | struct block *block = NULL; | |
15550d6b MK |
1105 | unsigned i1 = 0; |
1106 | unsigned i2 = 0; | |
d2630e69 AF |
1107 | |
1108 | values.sals = NULL; | |
1109 | values.nelts = 0; | |
1110 | ||
1111 | if (file_symtab != NULL) | |
1112 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), STATIC_BLOCK); | |
1113 | else | |
c4fc331b AS |
1114 | { |
1115 | enum language save_language; | |
1116 | ||
1117 | /* get_selected_block can change the current language when there is | |
1118 | no selected frame yet. */ | |
1119 | save_language = current_language->la_language; | |
1120 | block = get_selected_block (0); | |
1121 | set_language (save_language); | |
1122 | } | |
1123 | ||
d2630e69 AF |
1124 | copy = find_imps (file_symtab, block, *argptr, NULL, &i1, &i2); |
1125 | ||
1126 | if (i1 > 0) | |
1127 | { | |
1128 | sym_arr = (struct symbol **) alloca ((i1 + 1) * sizeof (struct symbol *)); | |
46be51c4 | 1129 | sym_arr[i1] = NULL; |
d2630e69 AF |
1130 | |
1131 | copy = find_imps (file_symtab, block, *argptr, sym_arr, &i1, &i2); | |
1132 | *argptr = copy; | |
1133 | } | |
1134 | ||
1135 | /* i1 now represents the TOTAL number of matches found. | |
1136 | i2 represents how many HIGH-LEVEL (struct symbol) matches, | |
1137 | which will come first in the sym_arr array. Any low-level | |
1138 | (minimal_symbol) matches will follow those. */ | |
1139 | ||
1140 | if (i1 == 1) | |
1141 | { | |
1142 | if (i2 > 0) | |
1143 | { | |
1144 | /* Already a struct symbol. */ | |
1145 | sym = sym_arr[0]; | |
1146 | } | |
1147 | else | |
1148 | { | |
1149 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr[0])); | |
1150 | if ((sym != NULL) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr[0]), SYMBOL_LINKAGE_NAME (sym)) != 0) | |
1151 | { | |
8a3fe4f8 | 1152 | warning (_("debugging symbol \"%s\" does not match selector; ignoring"), SYMBOL_LINKAGE_NAME (sym)); |
d2630e69 AF |
1153 | sym = NULL; |
1154 | } | |
1155 | } | |
1156 | ||
1157 | values.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
1158 | values.nelts = 1; | |
1159 | ||
1160 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1161 | { | |
1162 | /* Canonicalize this, so it remains resolved for dylib loads. */ | |
1163 | values.sals[0] = find_function_start_sal (sym, funfirstline); | |
1164 | build_canonical_line_spec (values.sals, SYMBOL_NATURAL_NAME (sym), canonical); | |
1165 | } | |
1166 | else | |
1167 | { | |
1168 | /* The only match was a non-debuggable symbol. */ | |
46be51c4 | 1169 | values.sals[0].symtab = NULL; |
d2630e69 AF |
1170 | values.sals[0].line = 0; |
1171 | values.sals[0].end = 0; | |
1172 | values.sals[0].pc = SYMBOL_VALUE_ADDRESS (sym_arr[0]); | |
1173 | } | |
1174 | return values; | |
1175 | } | |
1176 | ||
1177 | if (i1 > 1) | |
1178 | { | |
1179 | /* More than one match. The user must choose one or more. */ | |
1180 | return decode_line_2 (sym_arr, i2, funfirstline, canonical); | |
1181 | } | |
1182 | ||
1183 | return values; | |
1184 | } | |
1185 | ||
614b3b14 | 1186 | /* This handles C++ and Java compound data structures. P should point |
17763fd9 EZ |
1187 | at the first component separator, i.e. double-colon or period. As |
1188 | an example, on entrance to this function we could have ARGPTR | |
1189 | pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */ | |
614b3b14 DC |
1190 | |
1191 | static struct symtabs_and_lines | |
1192 | decode_compound (char **argptr, int funfirstline, char ***canonical, | |
1193 | char *saved_arg, char *p) | |
1194 | { | |
1195 | struct symtabs_and_lines values; | |
93d91629 | 1196 | char *p2; |
614b3b14 DC |
1197 | char *saved_arg2 = *argptr; |
1198 | char *temp_end; | |
1199 | struct symbol *sym; | |
614b3b14 DC |
1200 | char *copy; |
1201 | struct symbol *sym_class; | |
614b3b14 DC |
1202 | struct symbol **sym_arr; |
1203 | struct type *t; | |
1204 | ||
17763fd9 EZ |
1205 | /* First check for "global" namespace specification, of the form |
1206 | "::foo". If found, skip over the colons and jump to normal | |
1207 | symbol processing. I.e. the whole line specification starts with | |
1208 | "::" (note the condition that *argptr == p). */ | |
614b3b14 DC |
1209 | if (p[0] == ':' |
1210 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
1211 | saved_arg2 += 2; | |
1212 | ||
87b3ede8 DC |
1213 | /* Given our example "AAA::inA::fun", we have two cases to consider: |
1214 | ||
1215 | 1) AAA::inA is the name of a class. In that case, presumably it | |
1216 | has a method called "fun"; we then look up that method using | |
1217 | find_method. | |
1218 | ||
1219 | 2) AAA::inA isn't the name of a class. In that case, either the | |
1220 | user made a typo or AAA::inA is the name of a namespace. | |
1221 | Either way, we just look up AAA::inA::fun with lookup_symbol. | |
1222 | ||
1223 | Thus, our first task is to find everything before the last set of | |
1224 | double-colons and figure out if it's the name of a class. So we | |
1225 | first loop through all of the double-colons. */ | |
614b3b14 | 1226 | |
a04257e6 | 1227 | p2 = p; /* Save for restart. */ |
17763fd9 EZ |
1228 | |
1229 | /* This is very messy. Following the example above we have now the | |
1230 | following pointers: | |
1231 | p -> "::inA::fun" | |
1232 | argptr -> "AAA::inA::fun | |
1233 | saved_arg -> "AAA::inA::fun | |
1234 | saved_arg2 -> "AAA::inA::fun | |
1235 | p2 -> "::inA::fun". */ | |
1236 | ||
1237 | /* In the loop below, with these strings, we'll make 2 passes, each | |
1238 | is marked in comments.*/ | |
1239 | ||
614b3b14 DC |
1240 | while (1) |
1241 | { | |
a04257e6 | 1242 | /* Move pointer up to next possible class/namespace token. */ |
17763fd9 | 1243 | |
a04257e6 | 1244 | p = p2 + 1; /* Restart with old value +1. */ |
17763fd9 EZ |
1245 | |
1246 | /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun", | |
1247 | i.e. if there is a double-colon, p will now point to the | |
1248 | second colon. */ | |
87b3ede8 | 1249 | /* PASS2: p2->"::fun", p->":fun" */ |
17763fd9 | 1250 | |
a04257e6 | 1251 | /* Move pointer ahead to next double-colon. */ |
614b3b14 DC |
1252 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) |
1253 | { | |
1254 | if (p[0] == '<') | |
1255 | { | |
1256 | temp_end = find_template_name_end (p); | |
1257 | if (!temp_end) | |
8a3fe4f8 | 1258 | error (_("malformed template specification in command")); |
614b3b14 DC |
1259 | p = temp_end; |
1260 | } | |
17763fd9 EZ |
1261 | /* Note that, since, at the start of this loop, p would be |
1262 | pointing to the second colon in a double-colon, we only | |
1263 | satisfy the condition below if there is another | |
1264 | double-colon to the right (after). I.e. there is another | |
1265 | component that can be a class or a namespace. I.e, if at | |
1266 | the beginning of this loop (PASS1), we had | |
1267 | p->":inA::fun", we'll trigger this when p has been | |
1268 | advanced to point to "::fun". */ | |
87b3ede8 | 1269 | /* PASS2: we will not trigger this. */ |
614b3b14 | 1270 | else if ((p[0] == ':') && (p[1] == ':')) |
a04257e6 | 1271 | break; /* Found double-colon. */ |
614b3b14 | 1272 | else |
87b3ede8 DC |
1273 | /* PASS2: We'll keep getting here, until p->"", at which point |
1274 | we exit this loop. */ | |
614b3b14 DC |
1275 | p++; |
1276 | } | |
1277 | ||
1278 | if (*p != ':') | |
17763fd9 EZ |
1279 | break; /* Out of the while (1). This would happen |
1280 | for instance if we have looked up | |
1281 | unsuccessfully all the components of the | |
87b3ede8 | 1282 | string, and p->""(PASS2) */ |
17763fd9 EZ |
1283 | |
1284 | /* We get here if p points to ' ', '\t', '\'', "::" or ""(i.e | |
1285 | string ended). */ | |
1286 | /* Save restart for next time around. */ | |
1287 | p2 = p; | |
1288 | /* Restore argptr as it was on entry to this function. */ | |
1289 | *argptr = saved_arg2; | |
87b3ede8 DC |
1290 | /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun", |
1291 | p2->"::fun". */ | |
17763fd9 EZ |
1292 | |
1293 | /* All ready for next pass through the loop. */ | |
614b3b14 DC |
1294 | } /* while (1) */ |
1295 | ||
87b3ede8 DC |
1296 | |
1297 | /* Start of lookup in the symbol tables. */ | |
1298 | ||
1299 | /* Lookup in the symbol table the substring between argptr and | |
1300 | p. Note, this call changes the value of argptr. */ | |
1301 | /* Before the call, argptr->"AAA::inA::fun", | |
1302 | p->"", p2->"::fun". After the call: argptr->"fun", p, p2 | |
1303 | unchanged. */ | |
1304 | sym_class = lookup_prefix_sym (argptr, p2); | |
1305 | ||
1306 | /* If sym_class has been found, and if "AAA::inA" is a class, then | |
1307 | we're in case 1 above. So we look up "fun" as a method of that | |
1308 | class. */ | |
1309 | if (sym_class && | |
1310 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
1311 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
1312 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
1313 | { | |
1314 | /* Arg token is not digits => try it as a function name. | |
1315 | Find the next token (everything up to end or next | |
1316 | blank). */ | |
1317 | if (**argptr | |
1318 | && strchr (get_gdb_completer_quote_characters (), | |
1319 | **argptr) != NULL) | |
1320 | { | |
1321 | p = skip_quoted (*argptr); | |
1322 | *argptr = *argptr + 1; | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | /* At this point argptr->"fun". */ | |
1327 | p = *argptr; | |
1328 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
1329 | p++; | |
1330 | /* At this point p->"". String ended. */ | |
1331 | } | |
1332 | ||
1333 | /* Allocate our own copy of the substring between argptr and | |
1334 | p. */ | |
1335 | copy = (char *) alloca (p - *argptr + 1); | |
1336 | memcpy (copy, *argptr, p - *argptr); | |
1337 | copy[p - *argptr] = '\0'; | |
1338 | if (p != *argptr | |
1339 | && copy[p - *argptr - 1] | |
1340 | && strchr (get_gdb_completer_quote_characters (), | |
1341 | copy[p - *argptr - 1]) != NULL) | |
1342 | copy[p - *argptr - 1] = '\0'; | |
1343 | ||
1344 | /* At this point copy->"fun", p->"" */ | |
1345 | ||
1346 | /* No line number may be specified. */ | |
1347 | while (*p == ' ' || *p == '\t') | |
1348 | p++; | |
1349 | *argptr = p; | |
1350 | /* At this point arptr->"". */ | |
1351 | ||
1352 | /* Look for copy as a method of sym_class. */ | |
1353 | /* At this point copy->"fun", sym_class is "AAA:inA", | |
1354 | saved_arg->"AAA::inA::fun". This concludes the scanning of | |
1355 | the string for possible components matches. If we find it | |
1356 | here, we return. If not, and we are at the and of the string, | |
1357 | we'll lookup the whole string in the symbol tables. */ | |
1358 | ||
1359 | return find_method (funfirstline, canonical, saved_arg, | |
1360 | copy, t, sym_class); | |
1361 | ||
1362 | } /* End if symbol found */ | |
1363 | ||
1364 | ||
1365 | /* We couldn't find a class, so we're in case 2 above. We check the | |
1366 | entire name as a symbol instead. */ | |
1367 | ||
614b3b14 DC |
1368 | copy = (char *) alloca (p - saved_arg2 + 1); |
1369 | memcpy (copy, saved_arg2, p - saved_arg2); | |
a04257e6 DC |
1370 | /* Note: if is_quoted should be true, we snuff out quote here |
1371 | anyway. */ | |
614b3b14 | 1372 | copy[p - saved_arg2] = '\000'; |
a04257e6 | 1373 | /* Set argptr to skip over the name. */ |
614b3b14 | 1374 | *argptr = (*p == '\'') ? p + 1 : p; |
17763fd9 | 1375 | |
614b3b14 | 1376 | /* Look up entire name */ |
2570f2b7 | 1377 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
614b3b14 | 1378 | if (sym) |
2570f2b7 | 1379 | return symbol_found (funfirstline, canonical, copy, sym, NULL); |
614b3b14 | 1380 | |
a04257e6 DC |
1381 | /* Couldn't find any interpretation as classes/namespaces, so give |
1382 | up. The quotes are important if copy is empty. */ | |
614b3b14 DC |
1383 | cplusplus_error (saved_arg, |
1384 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", | |
1385 | copy); | |
1386 | } | |
1387 | ||
93d91629 DC |
1388 | /* Next come some helper functions for decode_compound. */ |
1389 | ||
1390 | /* Return the symbol corresponding to the substring of *ARGPTR ending | |
1391 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol | |
1392 | name in question, the compound object separator ("::" or "."), and | |
17763fd9 EZ |
1393 | whitespace. Note that *ARGPTR is changed whether or not the |
1394 | lookup_symbol call finds anything (i.e we return NULL). As an | |
1395 | example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */ | |
93d91629 DC |
1396 | |
1397 | static struct symbol * | |
1398 | lookup_prefix_sym (char **argptr, char *p) | |
1399 | { | |
1400 | char *p1; | |
1401 | char *copy; | |
1402 | ||
1403 | /* Extract the class name. */ | |
1404 | p1 = p; | |
1405 | while (p != *argptr && p[-1] == ' ') | |
1406 | --p; | |
1407 | copy = (char *) alloca (p - *argptr + 1); | |
1408 | memcpy (copy, *argptr, p - *argptr); | |
1409 | copy[p - *argptr] = 0; | |
1410 | ||
17763fd9 | 1411 | /* Discard the class name from the argptr. */ |
93d91629 DC |
1412 | p = p1 + (p1[0] == ':' ? 2 : 1); |
1413 | while (*p == ' ' || *p == '\t') | |
1414 | p++; | |
1415 | *argptr = p; | |
1416 | ||
17763fd9 EZ |
1417 | /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA", |
1418 | argptr->"inA::fun" */ | |
1419 | ||
2570f2b7 | 1420 | return lookup_symbol (copy, 0, STRUCT_DOMAIN, 0); |
93d91629 DC |
1421 | } |
1422 | ||
4224873a DC |
1423 | /* This finds the method COPY in the class whose type is T and whose |
1424 | symbol is SYM_CLASS. */ | |
1425 | ||
1426 | static struct symtabs_and_lines | |
1427 | find_method (int funfirstline, char ***canonical, char *saved_arg, | |
1428 | char *copy, struct type *t, struct symbol *sym_class) | |
1429 | { | |
1430 | struct symtabs_and_lines values; | |
46be51c4 | 1431 | struct symbol *sym = NULL; |
78a11fb4 | 1432 | int i1; /* Counter for the symbol array. */ |
4224873a DC |
1433 | struct symbol **sym_arr = alloca (total_number_of_methods (t) |
1434 | * sizeof (struct symbol *)); | |
1435 | ||
78a11fb4 DC |
1436 | /* Find all methods with a matching name, and put them in |
1437 | sym_arr. */ | |
4224873a | 1438 | |
19ef5c71 | 1439 | i1 = find_methods (t, copy, SYMBOL_LANGUAGE (sym_class), sym_arr); |
4224873a | 1440 | |
4224873a DC |
1441 | if (i1 == 1) |
1442 | { | |
1443 | /* There is exactly one field with that name. */ | |
1444 | sym = sym_arr[0]; | |
1445 | ||
1446 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1447 | { | |
1448 | values.sals = (struct symtab_and_line *) | |
1449 | xmalloc (sizeof (struct symtab_and_line)); | |
1450 | values.nelts = 1; | |
1451 | values.sals[0] = find_function_start_sal (sym, | |
1452 | funfirstline); | |
1453 | } | |
1454 | else | |
1455 | { | |
15550d6b | 1456 | values.sals = NULL; |
4224873a DC |
1457 | values.nelts = 0; |
1458 | } | |
1459 | return values; | |
1460 | } | |
1461 | if (i1 > 0) | |
1462 | { | |
1463 | /* There is more than one field with that name | |
1464 | (overloaded). Ask the user which one to use. */ | |
1465 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | char *tmp; | |
1470 | ||
1471 | if (is_operator_name (copy)) | |
1472 | { | |
1473 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
1474 | strcpy (tmp, "operator "); | |
1475 | strcat (tmp, copy + 3); | |
1476 | } | |
1477 | else | |
1478 | tmp = copy; | |
1479 | if (tmp[0] == '~') | |
1480 | cplusplus_error (saved_arg, | |
1481 | "the class `%s' does not have destructor defined\n", | |
1482 | SYMBOL_PRINT_NAME (sym_class)); | |
1483 | else | |
1484 | cplusplus_error (saved_arg, | |
1485 | "the class %s does not have any method named %s\n", | |
1486 | SYMBOL_PRINT_NAME (sym_class), tmp); | |
1487 | } | |
1488 | } | |
1489 | ||
f3c39e76 DC |
1490 | \f |
1491 | ||
1492 | /* Return the symtab associated to the filename given by the substring | |
68219205 JJ |
1493 | of *ARGPTR ending at P, and advance ARGPTR past that filename. If |
1494 | NOT_FOUND_PTR is not null and the source file is not found, store | |
1495 | boolean true at the location pointed to and do not issue an | |
1496 | error message. */ | |
f3c39e76 DC |
1497 | |
1498 | static struct symtab * | |
68219205 JJ |
1499 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed, |
1500 | int *not_found_ptr) | |
f3c39e76 DC |
1501 | { |
1502 | char *p1; | |
1503 | char *copy; | |
94cd26f8 | 1504 | struct symtab *file_symtab; |
f3c39e76 DC |
1505 | |
1506 | p1 = p; | |
1507 | while (p != *argptr && p[-1] == ' ') | |
1508 | --p; | |
1509 | if ((*p == '"') && is_quote_enclosed) | |
1510 | --p; | |
1511 | copy = (char *) alloca (p - *argptr + 1); | |
1512 | memcpy (copy, *argptr, p - *argptr); | |
a04257e6 | 1513 | /* It may have the ending quote right after the file name. */ |
f3c39e76 DC |
1514 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') |
1515 | copy[p - *argptr - 1] = 0; | |
1516 | else | |
1517 | copy[p - *argptr] = 0; | |
1518 | ||
1519 | /* Find that file's data. */ | |
94cd26f8 DC |
1520 | file_symtab = lookup_symtab (copy); |
1521 | if (file_symtab == 0) | |
f3c39e76 | 1522 | { |
68219205 | 1523 | if (not_found_ptr) |
05ff989b | 1524 | *not_found_ptr = 1; |
b96e2927 PA |
1525 | if (!have_full_symbols () && !have_partial_symbols ()) |
1526 | throw_error (NOT_FOUND_ERROR, | |
1527 | _("No symbol table is loaded. Use the \"file\" command.")); | |
109c3e39 | 1528 | throw_error (NOT_FOUND_ERROR, _("No source file named %s."), copy); |
f3c39e76 DC |
1529 | } |
1530 | ||
1531 | /* Discard the file name from the arg. */ | |
1532 | p = p1 + 1; | |
1533 | while (*p == ' ' || *p == '\t') | |
1534 | p++; | |
1535 | *argptr = p; | |
1536 | ||
94cd26f8 | 1537 | return file_symtab; |
f3c39e76 DC |
1538 | } |
1539 | ||
84fba31b DC |
1540 | \f |
1541 | ||
1542 | /* This decodes a line where the argument is all digits (possibly | |
1543 | preceded by a sign). Q should point to the end of those digits; | |
1544 | the other arguments are as usual. */ | |
1545 | ||
1546 | static struct symtabs_and_lines | |
1547 | decode_all_digits (char **argptr, struct symtab *default_symtab, | |
1548 | int default_line, char ***canonical, | |
88d262ca | 1549 | struct symtab *file_symtab, char *q) |
84fba31b DC |
1550 | |
1551 | { | |
1552 | struct symtabs_and_lines values; | |
1553 | struct symtab_and_line val; | |
1554 | ||
1555 | enum sign | |
1556 | { | |
1557 | none, plus, minus | |
1558 | } | |
1559 | sign = none; | |
1560 | ||
1561 | /* We might need a canonical line spec if no file was specified. */ | |
46be51c4 | 1562 | int need_canonical = (file_symtab == NULL) ? 1 : 0; |
84fba31b DC |
1563 | |
1564 | init_sal (&val); | |
1565 | ||
1566 | /* This is where we need to make sure that we have good defaults. | |
1567 | We must guarantee that this section of code is never executed | |
1568 | when we are called with just a function name, since | |
1569 | set_default_source_symtab_and_line uses | |
a04257e6 | 1570 | select_source_symtab that calls us with such an argument. */ |
84fba31b | 1571 | |
88d262ca | 1572 | if (file_symtab == 0 && default_symtab == 0) |
84fba31b | 1573 | { |
a04257e6 | 1574 | /* Make sure we have at least a default source file. */ |
84fba31b DC |
1575 | set_default_source_symtab_and_line (); |
1576 | initialize_defaults (&default_symtab, &default_line); | |
1577 | } | |
1578 | ||
1579 | if (**argptr == '+') | |
1580 | sign = plus, (*argptr)++; | |
1581 | else if (**argptr == '-') | |
1582 | sign = minus, (*argptr)++; | |
1583 | val.line = atoi (*argptr); | |
1584 | switch (sign) | |
1585 | { | |
1586 | case plus: | |
1587 | if (q == *argptr) | |
1588 | val.line = 5; | |
88d262ca | 1589 | if (file_symtab == 0) |
84fba31b DC |
1590 | val.line = default_line + val.line; |
1591 | break; | |
1592 | case minus: | |
1593 | if (q == *argptr) | |
1594 | val.line = 15; | |
88d262ca | 1595 | if (file_symtab == 0) |
84fba31b DC |
1596 | val.line = default_line - val.line; |
1597 | else | |
1598 | val.line = 1; | |
1599 | break; | |
1600 | case none: | |
1601 | break; /* No need to adjust val.line. */ | |
1602 | } | |
1603 | ||
1604 | while (*q == ' ' || *q == '\t') | |
1605 | q++; | |
1606 | *argptr = q; | |
88d262ca DC |
1607 | if (file_symtab == 0) |
1608 | file_symtab = default_symtab; | |
84fba31b DC |
1609 | |
1610 | /* It is possible that this source file has more than one symtab, | |
1611 | and that the new line number specification has moved us from the | |
88d262ca DC |
1612 | default (in file_symtab) to a new one. */ |
1613 | val.symtab = find_line_symtab (file_symtab, val.line, NULL, NULL); | |
84fba31b | 1614 | if (val.symtab == 0) |
88d262ca | 1615 | val.symtab = file_symtab; |
84fba31b DC |
1616 | |
1617 | val.pc = 0; | |
1618 | values.sals = (struct symtab_and_line *) | |
1619 | xmalloc (sizeof (struct symtab_and_line)); | |
1620 | values.sals[0] = val; | |
1621 | values.nelts = 1; | |
1622 | if (need_canonical) | |
1623 | build_canonical_line_spec (values.sals, NULL, canonical); | |
ed0616c6 | 1624 | values.sals[0].explicit_line = 1; |
84fba31b DC |
1625 | return values; |
1626 | } | |
f3c39e76 | 1627 | |
614b3b14 DC |
1628 | \f |
1629 | ||
14e91ac5 DC |
1630 | /* Decode a linespec starting with a dollar sign. */ |
1631 | ||
1632 | static struct symtabs_and_lines | |
1633 | decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab, | |
88d262ca | 1634 | char ***canonical, struct symtab *file_symtab) |
14e91ac5 | 1635 | { |
4fa62494 | 1636 | LONGEST valx; |
14e91ac5 DC |
1637 | int index = 0; |
1638 | int need_canonical = 0; | |
1639 | struct symtabs_and_lines values; | |
1640 | struct symtab_and_line val; | |
1641 | char *p; | |
1642 | struct symbol *sym; | |
14e91ac5 DC |
1643 | struct minimal_symbol *msymbol; |
1644 | ||
1645 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1646 | while (*p >= '0' && *p <= '9') | |
1647 | p++; | |
a04257e6 | 1648 | if (!*p) /* Reached end of token without hitting non-digit. */ |
14e91ac5 | 1649 | { |
a04257e6 | 1650 | /* We have a value history reference. */ |
4fa62494 | 1651 | struct value *val_history; |
14e91ac5 | 1652 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
4fa62494 UW |
1653 | val_history = access_value_history ((copy[1] == '$') ? -index : index); |
1654 | if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT) | |
8a3fe4f8 | 1655 | error (_("History values used in line specs must have integer values.")); |
4fa62494 | 1656 | valx = value_as_long (val_history); |
14e91ac5 DC |
1657 | } |
1658 | else | |
1659 | { | |
1660 | /* Not all digits -- may be user variable/function or a | |
a04257e6 | 1661 | convenience variable. */ |
14e91ac5 | 1662 | |
a04257e6 | 1663 | /* Look up entire name as a symbol first. */ |
2570f2b7 | 1664 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
46be51c4 | 1665 | file_symtab = (struct symtab *) NULL; |
14e91ac5 DC |
1666 | need_canonical = 1; |
1667 | /* Symbol was found --> jump to normal symbol processing. */ | |
1668 | if (sym) | |
2570f2b7 | 1669 | return symbol_found (funfirstline, canonical, copy, sym, NULL); |
14e91ac5 | 1670 | |
a04257e6 | 1671 | /* If symbol was not found, look in minimal symbol tables. */ |
14e91ac5 | 1672 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
a04257e6 | 1673 | /* Min symbol was found --> jump to minsym processing. */ |
14e91ac5 DC |
1674 | if (msymbol) |
1675 | return minsym_found (funfirstline, msymbol); | |
1676 | ||
a04257e6 | 1677 | /* Not a user variable or function -- must be convenience variable. */ |
4fa62494 | 1678 | if (!get_internalvar_integer (lookup_internalvar (copy + 1), &valx)) |
8a3fe4f8 | 1679 | error (_("Convenience variables used in line specs must have integer values.")); |
14e91ac5 DC |
1680 | } |
1681 | ||
1682 | init_sal (&val); | |
1683 | ||
a04257e6 | 1684 | /* Either history value or convenience value from above, in valx. */ |
88d262ca | 1685 | val.symtab = file_symtab ? file_symtab : default_symtab; |
4fa62494 | 1686 | val.line = valx; |
14e91ac5 DC |
1687 | val.pc = 0; |
1688 | ||
1689 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
1690 | values.sals[0] = val; | |
1691 | values.nelts = 1; | |
1692 | ||
1693 | if (need_canonical) | |
1694 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1695 | ||
1696 | return values; | |
1697 | } | |
1698 | ||
bca02a8a DC |
1699 | \f |
1700 | ||
88d262ca | 1701 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
68219205 JJ |
1702 | look in that symtab's static variables first. If NOT_FOUND_PTR is not NULL and |
1703 | the function cannot be found, store boolean true in the location pointed to | |
1704 | and do not issue an error message. */ | |
bca02a8a DC |
1705 | |
1706 | static struct symtabs_and_lines | |
1707 | decode_variable (char *copy, int funfirstline, char ***canonical, | |
68219205 | 1708 | struct symtab *file_symtab, int *not_found_ptr) |
bca02a8a DC |
1709 | { |
1710 | struct symbol *sym; | |
bca02a8a DC |
1711 | |
1712 | struct minimal_symbol *msymbol; | |
1713 | ||
1714 | sym = lookup_symbol (copy, | |
88d262ca DC |
1715 | (file_symtab |
1716 | ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), | |
1717 | STATIC_BLOCK) | |
bca02a8a | 1718 | : get_selected_block (0)), |
2570f2b7 | 1719 | VAR_DOMAIN, 0); |
bca02a8a DC |
1720 | |
1721 | if (sym != NULL) | |
2570f2b7 | 1722 | return symbol_found (funfirstline, canonical, copy, sym, file_symtab); |
bca02a8a DC |
1723 | |
1724 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); | |
1725 | ||
1726 | if (msymbol != NULL) | |
1727 | return minsym_found (funfirstline, msymbol); | |
1728 | ||
68219205 | 1729 | if (not_found_ptr) |
05ff989b | 1730 | *not_found_ptr = 1; |
b96e2927 PA |
1731 | |
1732 | if (!have_full_symbols () | |
1733 | && !have_partial_symbols () | |
1734 | && !have_minimal_symbols ()) | |
1735 | throw_error (NOT_FOUND_ERROR, | |
1736 | _("No symbol table is loaded. Use the \"file\" command.")); | |
109c3e39 | 1737 | throw_error (NOT_FOUND_ERROR, _("Function \"%s\" not defined."), copy); |
bca02a8a DC |
1738 | } |
1739 | ||
1740 | ||
14e91ac5 DC |
1741 | \f |
1742 | ||
413dad4d DC |
1743 | /* Now come some functions that are called from multiple places within |
1744 | decode_line_1. */ | |
1745 | ||
1746 | /* We've found a symbol SYM to associate with our linespec; build a | |
1747 | corresponding struct symtabs_and_lines. */ | |
1748 | ||
1749 | static struct symtabs_and_lines | |
1750 | symbol_found (int funfirstline, char ***canonical, char *copy, | |
2570f2b7 | 1751 | struct symbol *sym, struct symtab *file_symtab) |
413dad4d DC |
1752 | { |
1753 | struct symtabs_and_lines values; | |
1754 | ||
1755 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
50641945 | 1756 | { |
413dad4d | 1757 | /* Arg is the name of a function */ |
50641945 FN |
1758 | values.sals = (struct symtab_and_line *) |
1759 | xmalloc (sizeof (struct symtab_and_line)); | |
413dad4d DC |
1760 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
1761 | values.nelts = 1; | |
1762 | ||
1763 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1764 | the line containing the parameters or thereabouts, not | |
1765 | the first line of code. */ | |
1766 | ||
1767 | /* We might need a canonical line spec if it is a static | |
1768 | function. */ | |
88d262ca | 1769 | if (file_symtab == 0) |
50641945 | 1770 | { |
2570f2b7 | 1771 | struct blockvector *bv = BLOCKVECTOR (SYMBOL_SYMTAB (sym)); |
413dad4d | 1772 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
176620f1 | 1773 | if (lookup_block_symbol (b, copy, NULL, VAR_DOMAIN) != NULL) |
413dad4d | 1774 | build_canonical_line_spec (values.sals, copy, canonical); |
50641945 | 1775 | } |
50641945 FN |
1776 | return values; |
1777 | } | |
413dad4d DC |
1778 | else |
1779 | { | |
1780 | if (funfirstline) | |
8a3fe4f8 | 1781 | error (_("\"%s\" is not a function"), copy); |
413dad4d DC |
1782 | else if (SYMBOL_LINE (sym) != 0) |
1783 | { | |
1784 | /* We know its line number. */ | |
1785 | values.sals = (struct symtab_and_line *) | |
1786 | xmalloc (sizeof (struct symtab_and_line)); | |
1787 | values.nelts = 1; | |
1788 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
2570f2b7 | 1789 | values.sals[0].symtab = SYMBOL_SYMTAB (sym); |
413dad4d DC |
1790 | values.sals[0].line = SYMBOL_LINE (sym); |
1791 | return values; | |
1792 | } | |
1793 | else | |
1794 | /* This can happen if it is compiled with a compiler which doesn't | |
1795 | put out line numbers for variables. */ | |
1796 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1797 | and return? For example, "info line foo" could print | |
1798 | the address. */ | |
8a3fe4f8 | 1799 | error (_("Line number not known for symbol \"%s\""), copy); |
413dad4d DC |
1800 | } |
1801 | } | |
50641945 | 1802 | |
413dad4d DC |
1803 | /* We've found a minimal symbol MSYMBOL to associate with our |
1804 | linespec; build a corresponding struct symtabs_and_lines. */ | |
50641945 | 1805 | |
413dad4d DC |
1806 | static struct symtabs_and_lines |
1807 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) | |
1808 | { | |
bccdca4a UW |
1809 | struct objfile *objfile = msymbol_objfile (msymbol); |
1810 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
413dad4d | 1811 | struct symtabs_and_lines values; |
bccdca4a | 1812 | CORE_ADDR pc; |
413dad4d DC |
1813 | |
1814 | values.sals = (struct symtab_and_line *) | |
1815 | xmalloc (sizeof (struct symtab_and_line)); | |
1816 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
714835d5 UW |
1817 | (struct obj_section *) 0, 0); |
1818 | values.sals[0].section = SYMBOL_OBJ_SECTION (msymbol); | |
bccdca4a UW |
1819 | |
1820 | /* The minimal symbol might point to a function descriptor; | |
1821 | resolve it to the actual code address instead. */ | |
1822 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
1823 | values.sals[0].pc, | |
1824 | ¤t_target); | |
1825 | if (pc != values.sals[0].pc) | |
1826 | values.sals[0] = find_pc_sect_line (pc, NULL, 0); | |
1827 | ||
413dad4d DC |
1828 | if (funfirstline) |
1829 | { | |
e48883f7 DJ |
1830 | struct symtab_and_line sal; |
1831 | ||
bccdca4a UW |
1832 | values.sals[0].pc = find_function_start_pc (gdbarch, |
1833 | values.sals[0].pc, | |
1834 | values.sals[0].section); | |
e48883f7 DJ |
1835 | |
1836 | sal = find_pc_sect_line (values.sals[0].pc, values.sals[0].section, 0); | |
1837 | ||
1838 | /* Check if SKIP_PROLOGUE left us in mid-line, and the next | |
1839 | line is still part of the same function. If there is no | |
1840 | line information here, sal.pc will be the passed in PC. */ | |
1841 | if (sal.pc != values.sals[0].pc | |
1842 | && (lookup_minimal_symbol_by_pc_section (values.sals[0].pc, | |
1843 | values.sals[0].section) | |
1844 | == lookup_minimal_symbol_by_pc_section (sal.end, | |
1845 | values.sals[0].section))) | |
1846 | /* Recalculate the line number (might not be N+1). */ | |
1847 | values.sals[0] = find_pc_sect_line (sal.end, values.sals[0].section, 0); | |
413dad4d | 1848 | } |
e48883f7 | 1849 | |
413dad4d DC |
1850 | values.nelts = 1; |
1851 | return values; | |
50641945 | 1852 | } |