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, | |
f3a5f1de KO |
68 | char *p, |
69 | int *not_found_ptr); | |
614b3b14 | 70 | |
93d91629 DC |
71 | static struct symbol *lookup_prefix_sym (char **argptr, char *p); |
72 | ||
4224873a DC |
73 | static struct symtabs_and_lines find_method (int funfirstline, |
74 | char ***canonical, | |
75 | char *saved_arg, | |
76 | char *copy, | |
77 | struct type *t, | |
f3a5f1de KO |
78 | struct symbol *sym_class, |
79 | int *not_found_ptr); | |
4224873a | 80 | |
614b3b14 DC |
81 | static NORETURN void cplusplus_error (const char *name, |
82 | const char *fmt, ...) | |
83 | ATTR_NORETURN ATTR_FORMAT (printf, 2, 3); | |
50641945 FN |
84 | |
85 | static int total_number_of_methods (struct type *type); | |
86 | ||
53c5240f PA |
87 | static int find_methods (struct type *, char *, |
88 | enum language, struct symbol **); | |
50641945 | 89 | |
aee8d8ba | 90 | static int add_matching_methods (int method_counter, struct type *t, |
53c5240f | 91 | enum language language, |
aee8d8ba DC |
92 | struct symbol **sym_arr); |
93 | ||
94 | static int add_constructors (int method_counter, struct type *t, | |
53c5240f | 95 | enum language language, |
aee8d8ba DC |
96 | struct symbol **sym_arr); |
97 | ||
50641945 FN |
98 | static void build_canonical_line_spec (struct symtab_and_line *, |
99 | char *, char ***); | |
100 | ||
101 | static char *find_toplevel_char (char *s, char c); | |
102 | ||
889f28e2 AF |
103 | static int is_objc_method_format (const char *s); |
104 | ||
50641945 FN |
105 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
106 | int, int, char ***); | |
107 | ||
f3c39e76 | 108 | static struct symtab *symtab_from_filename (char **argptr, |
68219205 JJ |
109 | char *p, int is_quote_enclosed, |
110 | int *not_found_ptr); | |
f3c39e76 | 111 | |
84fba31b DC |
112 | static struct |
113 | symtabs_and_lines decode_all_digits (char **argptr, | |
114 | struct symtab *default_symtab, | |
115 | int default_line, | |
116 | char ***canonical, | |
88d262ca | 117 | struct symtab *file_symtab, |
84fba31b DC |
118 | char *q); |
119 | ||
14e91ac5 DC |
120 | static struct symtabs_and_lines decode_dollar (char *copy, |
121 | int funfirstline, | |
122 | struct symtab *default_symtab, | |
123 | char ***canonical, | |
88d262ca | 124 | struct symtab *file_symtab); |
14e91ac5 | 125 | |
bca02a8a DC |
126 | static struct symtabs_and_lines decode_variable (char *copy, |
127 | int funfirstline, | |
128 | char ***canonical, | |
68219205 JJ |
129 | struct symtab *file_symtab, |
130 | int *not_found_ptr); | |
bca02a8a | 131 | |
413dad4d DC |
132 | static struct |
133 | symtabs_and_lines symbol_found (int funfirstline, | |
134 | char ***canonical, | |
135 | char *copy, | |
136 | struct symbol *sym, | |
2570f2b7 | 137 | struct symtab *file_symtab); |
413dad4d DC |
138 | |
139 | static struct | |
140 | symtabs_and_lines minsym_found (int funfirstline, | |
141 | struct minimal_symbol *msymbol); | |
142 | ||
50641945 FN |
143 | /* Helper functions. */ |
144 | ||
255e7dbf AC |
145 | /* Issue a helpful hint on using the command completion feature on |
146 | single quoted demangled C++ symbols as part of the completion | |
147 | error. */ | |
50641945 | 148 | |
614b3b14 | 149 | static NORETURN void |
255e7dbf | 150 | cplusplus_error (const char *name, const char *fmt, ...) |
50641945 | 151 | { |
255e7dbf | 152 | struct ui_file *tmp_stream; |
f3a5f1de | 153 | char *message; |
255e7dbf AC |
154 | tmp_stream = mem_fileopen (); |
155 | make_cleanup_ui_file_delete (tmp_stream); | |
156 | ||
157 | { | |
158 | va_list args; | |
159 | va_start (args, fmt); | |
160 | vfprintf_unfiltered (tmp_stream, fmt, args); | |
161 | va_end (args); | |
162 | } | |
163 | ||
50641945 FN |
164 | while (*name == '\'') |
165 | name++; | |
255e7dbf AC |
166 | fprintf_unfiltered (tmp_stream, |
167 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" | |
168 | "(Note leading single quote.)"), | |
169 | name, name); | |
f3a5f1de | 170 | |
759ef836 PA |
171 | message = ui_file_xstrdup (tmp_stream, NULL); |
172 | make_cleanup (xfree, message); | |
173 | throw_error (NOT_FOUND_ERROR, "%s", message); | |
50641945 FN |
174 | } |
175 | ||
176 | /* Return the number of methods described for TYPE, including the | |
177 | methods from types it derives from. This can't be done in the symbol | |
178 | reader because the type of the baseclass might still be stubbed | |
179 | when the definition of the derived class is parsed. */ | |
180 | ||
181 | static int | |
182 | total_number_of_methods (struct type *type) | |
183 | { | |
184 | int n; | |
185 | int count; | |
186 | ||
187 | CHECK_TYPEDEF (type); | |
188 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
189 | return 0; | |
190 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
191 | ||
192 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
193 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
194 | ||
195 | return count; | |
196 | } | |
197 | ||
198 | /* Recursive helper function for decode_line_1. | |
199 | Look for methods named NAME in type T. | |
200 | Return number of matches. | |
201 | Put matches in SYM_ARR, which should have been allocated with | |
202 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
203 | Note that this function is g++ specific. */ | |
204 | ||
205 | static int | |
53c5240f PA |
206 | find_methods (struct type *t, char *name, enum language language, |
207 | struct symbol **sym_arr) | |
50641945 FN |
208 | { |
209 | int i1 = 0; | |
210 | int ibase; | |
50641945 FN |
211 | char *class_name = type_name_no_tag (t); |
212 | ||
213 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
214 | unless we figure out how to get the physname without the name of | |
215 | the class, then the loop can't do any good. */ | |
216 | if (class_name | |
53c5240f | 217 | && (lookup_symbol_in_language (class_name, (struct block *) NULL, |
2570f2b7 | 218 | STRUCT_DOMAIN, language, (int *) NULL))) |
50641945 FN |
219 | { |
220 | int method_counter; | |
5c717440 | 221 | int name_len = strlen (name); |
50641945 | 222 | |
8bd1f2c6 | 223 | CHECK_TYPEDEF (t); |
50641945 FN |
224 | |
225 | /* Loop over each method name. At this level, all overloads of a name | |
226 | are counted as a single name. There is an inner loop which loops over | |
227 | each overload. */ | |
228 | ||
229 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
230 | method_counter >= 0; | |
231 | --method_counter) | |
232 | { | |
50641945 FN |
233 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); |
234 | char dem_opname[64]; | |
235 | ||
236 | if (strncmp (method_name, "__", 2) == 0 || | |
237 | strncmp (method_name, "op", 2) == 0 || | |
238 | strncmp (method_name, "type", 4) == 0) | |
239 | { | |
240 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
241 | method_name = dem_opname; | |
242 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
243 | method_name = dem_opname; | |
244 | } | |
245 | ||
13b57657 | 246 | if (strcmp_iw (name, method_name) == 0) |
50641945 | 247 | /* Find all the overloaded methods with that name. */ |
53c5240f | 248 | i1 += add_matching_methods (method_counter, t, language, |
aee8d8ba | 249 | sym_arr + i1); |
5c717440 DJ |
250 | else if (strncmp (class_name, name, name_len) == 0 |
251 | && (class_name[name_len] == '\0' | |
252 | || class_name[name_len] == '<')) | |
53c5240f | 253 | i1 += add_constructors (method_counter, t, language, |
aee8d8ba | 254 | sym_arr + i1); |
50641945 FN |
255 | } |
256 | } | |
257 | ||
258 | /* Only search baseclasses if there is no match yet, since names in | |
259 | derived classes override those in baseclasses. | |
260 | ||
261 | FIXME: The above is not true; it is only true of member functions | |
262 | if they have the same number of arguments (??? - section 13.1 of the | |
263 | ARM says the function members are not in the same scope but doesn't | |
264 | really spell out the rules in a way I understand. In any case, if | |
265 | the number of arguments differ this is a case in which we can overload | |
266 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
267 | rather than hiding in this case). */ | |
268 | ||
269 | if (i1 == 0) | |
270 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
53c5240f PA |
271 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, |
272 | language, sym_arr + i1); | |
50641945 FN |
273 | |
274 | return i1; | |
275 | } | |
276 | ||
aee8d8ba DC |
277 | /* Add the symbols associated to methods of the class whose type is T |
278 | and whose name matches the method indexed by METHOD_COUNTER in the | |
279 | array SYM_ARR. Return the number of methods added. */ | |
280 | ||
281 | static int | |
282 | add_matching_methods (int method_counter, struct type *t, | |
53c5240f | 283 | enum language language, struct symbol **sym_arr) |
aee8d8ba DC |
284 | { |
285 | int field_counter; | |
286 | int i1 = 0; | |
287 | ||
288 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
289 | field_counter >= 0; | |
290 | --field_counter) | |
291 | { | |
292 | struct fn_field *f; | |
293 | char *phys_name; | |
294 | ||
295 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
296 | ||
297 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
298 | { | |
299 | char *tmp_name; | |
300 | ||
301 | tmp_name = gdb_mangle_name (t, | |
302 | method_counter, | |
303 | field_counter); | |
304 | phys_name = alloca (strlen (tmp_name) + 1); | |
305 | strcpy (phys_name, tmp_name); | |
306 | xfree (tmp_name); | |
307 | } | |
308 | else | |
309 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
53c5240f | 310 | |
53c5240f | 311 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
aee8d8ba | 312 | NULL, VAR_DOMAIN, |
53c5240f | 313 | language, |
2570f2b7 | 314 | (int *) NULL); |
aee8d8ba DC |
315 | if (sym_arr[i1]) |
316 | i1++; | |
317 | else | |
318 | { | |
319 | /* This error message gets printed, but the method | |
320 | still seems to be found | |
321 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
322 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
323 | language_cplus, | |
324 | DMGL_PARAMS | DMGL_ANSI); | |
325 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
326 | */ | |
327 | } | |
328 | } | |
329 | ||
330 | return i1; | |
331 | } | |
332 | ||
333 | /* Add the symbols associated to constructors of the class whose type | |
334 | is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the | |
335 | array SYM_ARR. Return the number of methods added. */ | |
336 | ||
337 | static int | |
338 | add_constructors (int method_counter, struct type *t, | |
53c5240f | 339 | enum language language, struct symbol **sym_arr) |
aee8d8ba DC |
340 | { |
341 | int field_counter; | |
342 | int i1 = 0; | |
343 | ||
344 | /* For GCC 3.x and stabs, constructors and destructors | |
345 | have names like __base_ctor and __complete_dtor. | |
346 | Check the physname for now if we're looking for a | |
347 | constructor. */ | |
348 | for (field_counter | |
349 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
350 | field_counter >= 0; | |
351 | --field_counter) | |
352 | { | |
353 | struct fn_field *f; | |
354 | char *phys_name; | |
53c5240f | 355 | |
aee8d8ba DC |
356 | f = TYPE_FN_FIELDLIST1 (t, method_counter); |
357 | ||
358 | /* GCC 3.x will never produce stabs stub methods, so | |
359 | we don't need to handle this case. */ | |
360 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
361 | continue; | |
362 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
363 | if (! is_constructor_name (phys_name)) | |
364 | continue; | |
365 | ||
366 | /* If this method is actually defined, include it in the | |
367 | list. */ | |
53c5240f | 368 | sym_arr[i1] = lookup_symbol_in_language (phys_name, |
aee8d8ba | 369 | NULL, VAR_DOMAIN, |
53c5240f | 370 | language, |
2570f2b7 | 371 | (int *) NULL); |
aee8d8ba DC |
372 | if (sym_arr[i1]) |
373 | i1++; | |
374 | } | |
375 | ||
376 | return i1; | |
377 | } | |
378 | ||
50641945 FN |
379 | /* Helper function for decode_line_1. |
380 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
381 | the SAL has a symtab. | |
382 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
383 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
384 | line spec is `filename:linenum'. */ | |
385 | ||
386 | static void | |
387 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
388 | char ***canonical) | |
389 | { | |
390 | char **canonical_arr; | |
391 | char *canonical_name; | |
392 | char *filename; | |
393 | struct symtab *s = sal->symtab; | |
394 | ||
395 | if (s == (struct symtab *) NULL | |
396 | || s->filename == (char *) NULL | |
397 | || canonical == (char ***) NULL) | |
398 | return; | |
399 | ||
400 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
401 | *canonical = canonical_arr; | |
402 | ||
403 | filename = s->filename; | |
404 | if (symname != NULL) | |
405 | { | |
406 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
407 | sprintf (canonical_name, "%s:%s", filename, symname); | |
408 | } | |
409 | else | |
410 | { | |
411 | canonical_name = xmalloc (strlen (filename) + 30); | |
412 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
413 | } | |
414 | canonical_arr[0] = canonical_name; | |
415 | } | |
416 | ||
417 | ||
418 | ||
419 | /* Find an instance of the character C in the string S that is outside | |
420 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
8120c9d5 EZ |
421 | strings. Also, ignore the char within a template name, like a ',' |
422 | within foo<int, int>. */ | |
423 | ||
50641945 FN |
424 | static char * |
425 | find_toplevel_char (char *s, char c) | |
426 | { | |
427 | int quoted = 0; /* zero if we're not in quotes; | |
428 | '"' if we're in a double-quoted string; | |
429 | '\'' if we're in a single-quoted string. */ | |
a04257e6 | 430 | int depth = 0; /* Number of unclosed parens we've seen. */ |
50641945 FN |
431 | char *scan; |
432 | ||
433 | for (scan = s; *scan; scan++) | |
434 | { | |
435 | if (quoted) | |
436 | { | |
437 | if (*scan == quoted) | |
438 | quoted = 0; | |
439 | else if (*scan == '\\' && *(scan + 1)) | |
440 | scan++; | |
441 | } | |
442 | else if (*scan == c && ! quoted && depth == 0) | |
443 | return scan; | |
444 | else if (*scan == '"' || *scan == '\'') | |
445 | quoted = *scan; | |
8120c9d5 | 446 | else if (*scan == '(' || *scan == '<') |
50641945 | 447 | depth++; |
8120c9d5 | 448 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
50641945 FN |
449 | depth--; |
450 | } | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
889f28e2 AF |
455 | /* Determines if the gives string corresponds to an Objective-C method |
456 | representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols | |
457 | are allowed to have spaces and parentheses in them. */ | |
458 | ||
459 | static int | |
460 | is_objc_method_format (const char *s) | |
461 | { | |
462 | if (s == NULL || *s == '\0') | |
463 | return 0; | |
464 | /* Handle arguments with the format FILENAME:SYMBOL. */ | |
465 | if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL) | |
466 | && (s[2] == '[') && strchr(s, ']')) | |
467 | return 1; | |
468 | /* Handle arguments that are just SYMBOL. */ | |
469 | else if ((strchr ("+-", s[0]) != NULL) && (s[1] == '[') && strchr(s, ']')) | |
470 | return 1; | |
471 | return 0; | |
472 | } | |
473 | ||
50641945 FN |
474 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
475 | operate on (ask user if necessary). | |
476 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
477 | as canonical line specs there. */ | |
478 | ||
479 | static struct symtabs_and_lines | |
480 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
481 | char ***canonical) | |
482 | { | |
483 | struct symtabs_and_lines values, return_values; | |
484 | char *args, *arg1; | |
485 | int i; | |
486 | char *prompt; | |
487 | char *symname; | |
488 | struct cleanup *old_chain; | |
489 | char **canonical_arr = (char **) NULL; | |
717d2f5a | 490 | const char *select_mode = multiple_symbols_select_mode (); |
50641945 | 491 | |
717d2f5a JB |
492 | if (select_mode == multiple_symbols_cancel) |
493 | error (_("\ | |
494 | canceled because the command is ambiguous\n\ | |
495 | See set/show multiple-symbol.")); | |
496 | ||
50641945 FN |
497 | values.sals = (struct symtab_and_line *) |
498 | alloca (nelts * sizeof (struct symtab_and_line)); | |
499 | return_values.sals = (struct symtab_and_line *) | |
500 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 501 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
502 | |
503 | if (canonical) | |
504 | { | |
505 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 506 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
507 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
508 | *canonical = canonical_arr; | |
509 | } | |
510 | ||
511 | i = 0; | |
50641945 FN |
512 | while (i < nelts) |
513 | { | |
a04257e6 | 514 | init_sal (&return_values.sals[i]); /* Initialize to zeroes. */ |
fe39c653 | 515 | init_sal (&values.sals[i]); |
50641945 | 516 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
717d2f5a | 517 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); |
50641945 FN |
518 | i++; |
519 | } | |
520 | ||
717d2f5a JB |
521 | /* If select_mode is "all", then do not print the multiple-choice |
522 | menu and act as if the user had chosen choice "1" (all). */ | |
dc67126b NR |
523 | if (select_mode == multiple_symbols_all |
524 | || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ()))) | |
717d2f5a JB |
525 | args = "1"; |
526 | else | |
50641945 | 527 | { |
717d2f5a JB |
528 | i = 0; |
529 | printf_unfiltered (_("[0] cancel\n[1] all\n")); | |
530 | while (i < nelts) | |
531 | { | |
532 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) | |
533 | { | |
534 | if (values.sals[i].symtab) | |
535 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
536 | (i + 2), | |
537 | SYMBOL_PRINT_NAME (sym_arr[i]), | |
538 | values.sals[i].symtab->filename, | |
539 | values.sals[i].line); | |
540 | else | |
541 | printf_unfiltered (_("[%d] %s at ?FILE:%d [No symtab? Probably broken debug info...]\n"), | |
542 | (i + 2), | |
543 | SYMBOL_PRINT_NAME (sym_arr[i]), | |
544 | values.sals[i].line); | |
545 | ||
546 | } | |
547 | else | |
548 | printf_unfiltered (_("?HERE\n")); | |
549 | i++; | |
550 | } | |
551 | ||
552 | prompt = getenv ("PS2"); | |
553 | if (prompt == NULL) | |
554 | { | |
555 | prompt = "> "; | |
556 | } | |
557 | args = command_line_input (prompt, 0, "overload-choice"); | |
50641945 | 558 | } |
50641945 FN |
559 | |
560 | if (args == 0 || *args == 0) | |
e2e0b3e5 | 561 | error_no_arg (_("one or more choice numbers")); |
50641945 FN |
562 | |
563 | i = 0; | |
564 | while (*args) | |
565 | { | |
566 | int num; | |
567 | ||
568 | arg1 = args; | |
569 | while (*arg1 >= '0' && *arg1 <= '9') | |
570 | arg1++; | |
571 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
8a3fe4f8 | 572 | error (_("Arguments must be choice numbers.")); |
50641945 FN |
573 | |
574 | num = atoi (args); | |
575 | ||
576 | if (num == 0) | |
8a3fe4f8 | 577 | error (_("canceled")); |
50641945 FN |
578 | else if (num == 1) |
579 | { | |
580 | if (canonical_arr) | |
581 | { | |
582 | for (i = 0; i < nelts; i++) | |
583 | { | |
584 | if (canonical_arr[i] == NULL) | |
585 | { | |
3567439c | 586 | symname = SYMBOL_LINKAGE_NAME (sym_arr[i]); |
1b36a34b | 587 | canonical_arr[i] = xstrdup (symname); |
50641945 FN |
588 | } |
589 | } | |
590 | } | |
591 | memcpy (return_values.sals, values.sals, | |
592 | (nelts * sizeof (struct symtab_and_line))); | |
593 | return_values.nelts = nelts; | |
594 | discard_cleanups (old_chain); | |
595 | return return_values; | |
596 | } | |
597 | ||
598 | if (num >= nelts + 2) | |
599 | { | |
a3f17187 | 600 | printf_unfiltered (_("No choice number %d.\n"), num); |
50641945 FN |
601 | } |
602 | else | |
603 | { | |
604 | num -= 2; | |
605 | if (values.sals[num].pc) | |
606 | { | |
607 | if (canonical_arr) | |
608 | { | |
3567439c | 609 | symname = SYMBOL_LINKAGE_NAME (sym_arr[num]); |
b8c9b27d | 610 | make_cleanup (xfree, symname); |
1b36a34b | 611 | canonical_arr[i] = xstrdup (symname); |
50641945 FN |
612 | } |
613 | return_values.sals[i++] = values.sals[num]; | |
614 | values.sals[num].pc = 0; | |
615 | } | |
616 | else | |
617 | { | |
a3f17187 | 618 | printf_unfiltered (_("duplicate request for %d ignored.\n"), num); |
50641945 FN |
619 | } |
620 | } | |
621 | ||
622 | args = arg1; | |
623 | while (*args == ' ' || *args == '\t') | |
624 | args++; | |
625 | } | |
626 | return_values.nelts = i; | |
627 | discard_cleanups (old_chain); | |
628 | return return_values; | |
629 | } | |
630 | \f | |
631 | /* The parser of linespec itself. */ | |
632 | ||
633 | /* Parse a string that specifies a line number. | |
634 | Pass the address of a char * variable; that variable will be | |
635 | advanced over the characters actually parsed. | |
636 | ||
637 | The string can be: | |
638 | ||
639 | LINENUM -- that line number in current file. PC returned is 0. | |
640 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
641 | FUNCTION -- line number of openbrace of that function. | |
642 | PC returned is the start of the function. | |
643 | VARIABLE -- line number of definition of that variable. | |
644 | PC returned is 0. | |
645 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
646 | *EXPR -- line in which address EXPR appears. | |
647 | ||
648 | This may all be followed by an "if EXPR", which we ignore. | |
649 | ||
650 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
651 | ||
652 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
653 | of real code inside a function when a function is specified, and it is | |
654 | not OK to specify a variable or type to get its line number. | |
655 | ||
656 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
657 | It defaults to current_source_symtab. | |
658 | DEFAULT_LINE specifies the line number to use for relative | |
659 | line numbers (that start with signs). Defaults to current_source_line. | |
660 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
661 | line specs there if necessary. Currently overloaded member functions and | |
662 | line numbers or static functions without a filename yield a canonical | |
663 | line spec. The array and the line spec strings are allocated on the heap, | |
664 | it is the callers responsibility to free them. | |
665 | ||
666 | Note that it is possible to return zero for the symtab | |
667 | if no file is validly specified. Callers must check that. | |
68219205 JJ |
668 | Also, the line number returned may be invalid. |
669 | ||
670 | If NOT_FOUND_PTR is not null, store a boolean true/false value at the location, based | |
671 | on whether or not failure occurs due to an unknown function or file. In the case | |
672 | where failure does occur due to an unknown function or file, do not issue an error | |
673 | message. */ | |
50641945 FN |
674 | |
675 | /* We allow single quotes in various places. This is a hideous | |
676 | kludge, which exists because the completer can't yet deal with the | |
677 | lack of single quotes. FIXME: write a linespec_completer which we | |
678 | can use as appropriate instead of make_symbol_completion_list. */ | |
679 | ||
680 | struct symtabs_and_lines | |
681 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
68219205 | 682 | int default_line, char ***canonical, int *not_found_ptr) |
50641945 | 683 | { |
f3c39e76 | 684 | char *p; |
614b3b14 | 685 | char *q; |
88d262ca DC |
686 | /* If a file name is specified, this is its symtab. */ |
687 | struct symtab *file_symtab = NULL; | |
50641945 | 688 | |
50641945 | 689 | char *copy; |
636b1a6d DC |
690 | /* This is NULL if there are no parens in *ARGPTR, or a pointer to |
691 | the closing parenthesis if there are parens. */ | |
692 | char *paren_pointer; | |
693 | /* This says whether or not something in *ARGPTR is quoted with | |
694 | completer_quotes (i.e. with single quotes). */ | |
50641945 | 695 | int is_quoted; |
0960f083 | 696 | /* Is part of *ARGPTR is enclosed in double quotes? */ |
50641945 | 697 | int is_quote_enclosed; |
d2630e69 | 698 | int is_objc_method = 0; |
50641945 | 699 | char *saved_arg = *argptr; |
50641945 | 700 | |
68219205 JJ |
701 | if (not_found_ptr) |
702 | *not_found_ptr = 0; | |
703 | ||
50641945 FN |
704 | /* Defaults have defaults. */ |
705 | ||
44fe14ab DC |
706 | initialize_defaults (&default_symtab, &default_line); |
707 | ||
a04257e6 | 708 | /* See if arg is *PC. */ |
50641945 FN |
709 | |
710 | if (**argptr == '*') | |
44fe14ab | 711 | return decode_indirect (argptr); |
50641945 | 712 | |
a04257e6 DC |
713 | /* Set various flags. 'paren_pointer' is important for overload |
714 | checking, where we allow things like: | |
715 | (gdb) break c::f(int) | |
716 | */ | |
50641945 | 717 | |
636b1a6d | 718 | set_flags (*argptr, &is_quoted, &paren_pointer); |
50641945 | 719 | |
0960f083 DC |
720 | /* Check to see if it's a multipart linespec (with colons or |
721 | periods). */ | |
50641945 | 722 | |
17763fd9 EZ |
723 | /* Locate the end of the first half of the linespec. |
724 | After the call, for instance, if the argptr string is "foo.c:123" | |
725 | p will point at "123". If there is only one part, like "foo", p | |
726 | will point to "". If this is a C++ name, like "A::B::foo", p will | |
727 | point to "::B::foo". Argptr is not changed by this call. */ | |
50641945 | 728 | |
0960f083 | 729 | p = locate_first_half (argptr, &is_quote_enclosed); |
50641945 | 730 | |
d2630e69 AF |
731 | /* Check if this is an Objective-C method (anything that starts with |
732 | a '+' or '-' and a '['). */ | |
889f28e2 | 733 | if (is_objc_method_format (p)) |
d2630e69 AF |
734 | { |
735 | is_objc_method = 1; | |
736 | paren_pointer = NULL; /* Just a category name. Ignore it. */ | |
737 | } | |
738 | ||
739 | /* Check if the symbol could be an Objective-C selector. */ | |
740 | ||
741 | { | |
742 | struct symtabs_and_lines values; | |
743 | values = decode_objc (argptr, funfirstline, NULL, | |
744 | canonical, saved_arg); | |
745 | if (values.sals != NULL) | |
746 | return values; | |
747 | } | |
748 | ||
0960f083 | 749 | /* Does it look like there actually were two parts? */ |
50641945 | 750 | |
636b1a6d | 751 | if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL) |
50641945 | 752 | { |
50641945 FN |
753 | if (is_quoted) |
754 | *argptr = *argptr + 1; | |
f3c39e76 | 755 | |
17763fd9 EZ |
756 | /* Is it a C++ or Java compound data structure? |
757 | The check on p[1] == ':' is capturing the case of "::", | |
758 | since p[0]==':' was checked above. | |
759 | Note that the call to decode_compound does everything | |
760 | for us, including the lookup on the symbol table, so we | |
761 | can return now. */ | |
762 | ||
50641945 | 763 | if (p[0] == '.' || p[1] == ':') |
614b3b14 | 764 | return decode_compound (argptr, funfirstline, canonical, |
f3a5f1de | 765 | saved_arg, p, not_found_ptr); |
50641945 | 766 | |
bc882aa9 | 767 | /* No, the first part is a filename; set file_symtab to be that file's |
f3c39e76 | 768 | symtab. Also, move argptr past the filename. */ |
50641945 | 769 | |
68219205 JJ |
770 | file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed, |
771 | not_found_ptr); | |
50641945 FN |
772 | } |
773 | #if 0 | |
774 | /* No one really seems to know why this was added. It certainly | |
775 | breaks the command line, though, whenever the passed | |
776 | name is of the form ClassName::Method. This bit of code | |
777 | singles out the class name, and if funfirstline is set (for | |
778 | example, you are setting a breakpoint at this function), | |
779 | you get an error. This did not occur with earlier | |
780 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
781 | else | |
782 | { | |
783 | /* Check if what we have till now is a symbol name */ | |
784 | ||
785 | /* We may be looking at a template instantiation such | |
786 | as "foo<int>". Check here whether we know about it, | |
787 | instead of falling through to the code below which | |
788 | handles ordinary function names, because that code | |
789 | doesn't like seeing '<' and '>' in a name -- the | |
790 | skip_quoted call doesn't go past them. So see if we | |
791 | can figure it out right now. */ | |
792 | ||
793 | copy = (char *) alloca (p - *argptr + 1); | |
794 | memcpy (copy, *argptr, p - *argptr); | |
795 | copy[p - *argptr] = '\000'; | |
2570f2b7 | 796 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
50641945 FN |
797 | if (sym) |
798 | { | |
50641945 | 799 | *argptr = (*p == '\'') ? p + 1 : p; |
2570f2b7 | 800 | return symbol_found (funfirstline, canonical, copy, sym, NULL); |
50641945 FN |
801 | } |
802 | /* Otherwise fall out from here and go to file/line spec | |
803 | processing, etc. */ | |
804 | } | |
805 | #endif | |
806 | ||
bc882aa9 | 807 | /* file_symtab is specified file's symtab, or 0 if no file specified. |
50641945 FN |
808 | arg no longer contains the file name. */ |
809 | ||
a04257e6 | 810 | /* Check whether arg is all digits (and sign). */ |
50641945 FN |
811 | |
812 | q = *argptr; | |
813 | if (*q == '-' || *q == '+') | |
814 | q++; | |
815 | while (*q >= '0' && *q <= '9') | |
816 | q++; | |
817 | ||
818 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
84fba31b DC |
819 | /* We found a token consisting of all digits -- at least one digit. */ |
820 | return decode_all_digits (argptr, default_symtab, default_line, | |
88d262ca | 821 | canonical, file_symtab, q); |
50641945 FN |
822 | |
823 | /* Arg token is not digits => try it as a variable name | |
824 | Find the next token (everything up to end or next whitespace). */ | |
825 | ||
a04257e6 DC |
826 | if (**argptr == '$') /* May be a convenience variable. */ |
827 | /* One or two $ chars possible. */ | |
828 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); | |
50641945 FN |
829 | else if (is_quoted) |
830 | { | |
831 | p = skip_quoted (*argptr); | |
832 | if (p[-1] != '\'') | |
8a3fe4f8 | 833 | error (_("Unmatched single quote.")); |
50641945 | 834 | } |
d2630e69 AF |
835 | else if (is_objc_method) |
836 | { | |
837 | /* allow word separators in method names for Obj-C */ | |
838 | p = skip_quoted_chars (*argptr, NULL, ""); | |
839 | } | |
636b1a6d | 840 | else if (paren_pointer != NULL) |
50641945 | 841 | { |
636b1a6d | 842 | p = paren_pointer + 1; |
50641945 FN |
843 | } |
844 | else | |
845 | { | |
846 | p = skip_quoted (*argptr); | |
847 | } | |
848 | ||
19ef5c71 KS |
849 | /* Keep any template parameters */ |
850 | if (*p == '<') | |
851 | p = find_template_name_end (p); | |
852 | ||
50641945 FN |
853 | copy = (char *) alloca (p - *argptr + 1); |
854 | memcpy (copy, *argptr, p - *argptr); | |
855 | copy[p - *argptr] = '\0'; | |
856 | if (p != *argptr | |
857 | && copy[0] | |
858 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 859 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
860 | { |
861 | copy[p - *argptr - 1] = '\0'; | |
862 | copy++; | |
863 | } | |
864 | while (*p == ' ' || *p == '\t') | |
865 | p++; | |
866 | *argptr = p; | |
867 | ||
868 | /* If it starts with $: may be a legitimate variable or routine name | |
869 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
a04257e6 | 870 | be history value, or it may be a convenience variable. */ |
50641945 FN |
871 | |
872 | if (*copy == '$') | |
14e91ac5 | 873 | return decode_dollar (copy, funfirstline, default_symtab, |
88d262ca | 874 | canonical, file_symtab); |
50641945 FN |
875 | |
876 | /* Look up that token as a variable. | |
877 | If file specified, use that file's per-file block to start with. */ | |
878 | ||
68219205 JJ |
879 | return decode_variable (copy, funfirstline, canonical, |
880 | file_symtab, not_found_ptr); | |
413dad4d | 881 | } |
50641945 | 882 | |
44fe14ab DC |
883 | \f |
884 | ||
614b3b14 DC |
885 | /* Now, more helper functions for decode_line_1. Some conventions |
886 | that these functions follow: | |
887 | ||
888 | Decode_line_1 typically passes along some of its arguments or local | |
889 | variables to the subfunctions. It passes the variables by | |
890 | reference if they are modified by the subfunction, and by value | |
891 | otherwise. | |
892 | ||
893 | Some of the functions have side effects that don't arise from | |
894 | variables that are passed by reference. In particular, if a | |
895 | function is passed ARGPTR as an argument, it modifies what ARGPTR | |
896 | points to; typically, it advances *ARGPTR past whatever substring | |
897 | it has just looked at. (If it doesn't modify *ARGPTR, then the | |
898 | function gets passed *ARGPTR instead, which is then called ARG: see | |
899 | set_flags, for example.) Also, functions that return a struct | |
900 | symtabs_and_lines may modify CANONICAL, as in the description of | |
901 | decode_line_1. | |
902 | ||
903 | If a function returns a struct symtabs_and_lines, then that struct | |
904 | will immediately make its way up the call chain to be returned by | |
905 | decode_line_1. In particular, all of the functions decode_XXX | |
906 | calculate the appropriate struct symtabs_and_lines, under the | |
907 | assumption that their argument is of the form XXX. */ | |
44fe14ab DC |
908 | |
909 | /* First, some functions to initialize stuff at the beggining of the | |
910 | function. */ | |
911 | ||
912 | static void | |
913 | initialize_defaults (struct symtab **default_symtab, int *default_line) | |
914 | { | |
915 | if (*default_symtab == 0) | |
916 | { | |
917 | /* Use whatever we have for the default source line. We don't use | |
918 | get_current_or_default_symtab_and_line as it can recurse and call | |
919 | us back! */ | |
920 | struct symtab_and_line cursal = | |
921 | get_current_source_symtab_and_line (); | |
922 | ||
923 | *default_symtab = cursal.symtab; | |
924 | *default_line = cursal.line; | |
925 | } | |
926 | } | |
927 | ||
636b1a6d DC |
928 | static void |
929 | set_flags (char *arg, int *is_quoted, char **paren_pointer) | |
930 | { | |
931 | char *ii; | |
932 | int has_if = 0; | |
933 | ||
934 | /* 'has_if' is for the syntax: | |
a04257e6 DC |
935 | (gdb) break foo if (a==b) |
936 | */ | |
636b1a6d DC |
937 | if ((ii = strstr (arg, " if ")) != NULL || |
938 | (ii = strstr (arg, "\tif ")) != NULL || | |
939 | (ii = strstr (arg, " if\t")) != NULL || | |
940 | (ii = strstr (arg, "\tif\t")) != NULL || | |
941 | (ii = strstr (arg, " if(")) != NULL || | |
942 | (ii = strstr (arg, "\tif( ")) != NULL) | |
943 | has_if = 1; | |
a04257e6 DC |
944 | /* Temporarily zap out "if (condition)" to not confuse the |
945 | parenthesis-checking code below. This is undone below. Do not | |
946 | change ii!! */ | |
636b1a6d DC |
947 | if (has_if) |
948 | { | |
949 | *ii = '\0'; | |
950 | } | |
951 | ||
952 | *is_quoted = (*arg | |
953 | && strchr (get_gdb_completer_quote_characters (), | |
954 | *arg) != NULL); | |
955 | ||
956 | *paren_pointer = strchr (arg, '('); | |
957 | if (*paren_pointer != NULL) | |
958 | *paren_pointer = strrchr (*paren_pointer, ')'); | |
959 | ||
a04257e6 DC |
960 | /* Now that we're safely past the paren_pointer check, put back " if |
961 | (condition)" so outer layers can see it. */ | |
636b1a6d DC |
962 | if (has_if) |
963 | *ii = ' '; | |
964 | } | |
965 | ||
44fe14ab DC |
966 | \f |
967 | ||
968 | /* Decode arg of the form *PC. */ | |
969 | ||
970 | static struct symtabs_and_lines | |
971 | decode_indirect (char **argptr) | |
972 | { | |
973 | struct symtabs_and_lines values; | |
974 | CORE_ADDR pc; | |
975 | ||
976 | (*argptr)++; | |
977 | pc = parse_and_eval_address_1 (argptr); | |
978 | ||
979 | values.sals = (struct symtab_and_line *) | |
980 | xmalloc (sizeof (struct symtab_and_line)); | |
981 | ||
982 | values.nelts = 1; | |
983 | values.sals[0] = find_pc_line (pc, 0); | |
984 | values.sals[0].pc = pc; | |
985 | values.sals[0].section = find_pc_overlay (pc); | |
ed0616c6 | 986 | values.sals[0].explicit_pc = 1; |
44fe14ab DC |
987 | |
988 | return values; | |
989 | } | |
413dad4d DC |
990 | |
991 | \f | |
992 | ||
0960f083 DC |
993 | /* Locate the first half of the linespec, ending in a colon, period, |
994 | or whitespace. (More or less.) Also, check to see if *ARGPTR is | |
995 | enclosed in double quotes; if so, set is_quote_enclosed, advance | |
17763fd9 EZ |
996 | ARGPTR past that and zero out the trailing double quote. |
997 | If ARGPTR is just a simple name like "main", p will point to "" | |
998 | at the end. */ | |
0960f083 DC |
999 | |
1000 | static char * | |
1001 | locate_first_half (char **argptr, int *is_quote_enclosed) | |
1002 | { | |
1003 | char *ii; | |
1004 | char *p, *p1; | |
1005 | int has_comma; | |
1006 | ||
1007 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
1008 | and we must isolate the first half. Outer layers will call again later | |
1009 | for the second half. | |
1010 | ||
1011 | Don't count commas that appear in argument lists of overloaded | |
1012 | functions, or in quoted strings. It's stupid to go to this much | |
1013 | trouble when the rest of the function is such an obvious roach hotel. */ | |
1014 | ii = find_toplevel_char (*argptr, ','); | |
1015 | has_comma = (ii != 0); | |
1016 | ||
a04257e6 DC |
1017 | /* Temporarily zap out second half to not confuse the code below. |
1018 | This is undone below. Do not change ii!! */ | |
0960f083 DC |
1019 | if (has_comma) |
1020 | { | |
1021 | *ii = '\0'; | |
1022 | } | |
1023 | ||
a04257e6 DC |
1024 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
1025 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore | |
1026 | inside of <>. */ | |
0960f083 DC |
1027 | |
1028 | p = *argptr; | |
1029 | if (p[0] == '"') | |
1030 | { | |
1031 | *is_quote_enclosed = 1; | |
1032 | (*argptr)++; | |
1033 | p++; | |
1034 | } | |
1035 | else | |
1036 | *is_quote_enclosed = 0; | |
1037 | for (; *p; p++) | |
1038 | { | |
1039 | if (p[0] == '<') | |
1040 | { | |
1041 | char *temp_end = find_template_name_end (p); | |
1042 | if (!temp_end) | |
8a3fe4f8 | 1043 | error (_("malformed template specification in command")); |
0960f083 DC |
1044 | p = temp_end; |
1045 | } | |
d2630e69 AF |
1046 | /* Check for a colon and a plus or minus and a [ (which |
1047 | indicates an Objective-C method) */ | |
889f28e2 | 1048 | if (is_objc_method_format (p)) |
d2630e69 AF |
1049 | { |
1050 | break; | |
1051 | } | |
a04257e6 DC |
1052 | /* Check for the end of the first half of the linespec. End of |
1053 | line, a tab, a double colon or the last single colon, or a | |
1054 | space. But if enclosed in double quotes we do not break on | |
1055 | enclosed spaces. */ | |
0960f083 DC |
1056 | if (!*p |
1057 | || p[0] == '\t' | |
1058 | || ((p[0] == ':') | |
1059 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
1060 | || ((p[0] == ' ') && !*is_quote_enclosed)) | |
1061 | break; | |
a04257e6 | 1062 | if (p[0] == '.' && strchr (p, ':') == NULL) |
0960f083 | 1063 | { |
a04257e6 DC |
1064 | /* Java qualified method. Find the *last* '.', since the |
1065 | others are package qualifiers. */ | |
0960f083 DC |
1066 | for (p1 = p; *p1; p1++) |
1067 | { | |
1068 | if (*p1 == '.') | |
1069 | p = p1; | |
1070 | } | |
1071 | break; | |
1072 | } | |
1073 | } | |
1074 | while (p[0] == ' ' || p[0] == '\t') | |
1075 | p++; | |
1076 | ||
a04257e6 | 1077 | /* If the closing double quote was left at the end, remove it. */ |
0960f083 DC |
1078 | if (*is_quote_enclosed) |
1079 | { | |
1080 | char *closing_quote = strchr (p - 1, '"'); | |
1081 | if (closing_quote && closing_quote[1] == '\0') | |
1082 | *closing_quote = '\0'; | |
1083 | } | |
1084 | ||
a04257e6 DC |
1085 | /* Now that we've safely parsed the first half, put back ',' so |
1086 | outer layers can see it. */ | |
0960f083 DC |
1087 | if (has_comma) |
1088 | *ii = ','; | |
1089 | ||
1090 | return p; | |
1091 | } | |
1092 | ||
1093 | \f | |
1094 | ||
d2630e69 AF |
1095 | /* Here's where we recognise an Objective-C Selector. An Objective C |
1096 | selector may be implemented by more than one class, therefore it | |
1097 | may represent more than one method/function. This gives us a | |
1098 | situation somewhat analogous to C++ overloading. If there's more | |
1099 | than one method that could represent the selector, then use some of | |
1100 | the existing C++ code to let the user choose one. */ | |
1101 | ||
1102 | struct symtabs_and_lines | |
1103 | decode_objc (char **argptr, int funfirstline, struct symtab *file_symtab, | |
1104 | char ***canonical, char *saved_arg) | |
1105 | { | |
1106 | struct symtabs_and_lines values; | |
1107 | struct symbol **sym_arr = NULL; | |
1108 | struct symbol *sym = NULL; | |
1109 | char *copy = NULL; | |
1110 | struct block *block = NULL; | |
15550d6b MK |
1111 | unsigned i1 = 0; |
1112 | unsigned i2 = 0; | |
d2630e69 AF |
1113 | |
1114 | values.sals = NULL; | |
1115 | values.nelts = 0; | |
1116 | ||
1117 | if (file_symtab != NULL) | |
1118 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), STATIC_BLOCK); | |
1119 | else | |
c4fc331b AS |
1120 | { |
1121 | enum language save_language; | |
1122 | ||
1123 | /* get_selected_block can change the current language when there is | |
1124 | no selected frame yet. */ | |
1125 | save_language = current_language->la_language; | |
1126 | block = get_selected_block (0); | |
1127 | set_language (save_language); | |
1128 | } | |
1129 | ||
d2630e69 AF |
1130 | copy = find_imps (file_symtab, block, *argptr, NULL, &i1, &i2); |
1131 | ||
1132 | if (i1 > 0) | |
1133 | { | |
1134 | sym_arr = (struct symbol **) alloca ((i1 + 1) * sizeof (struct symbol *)); | |
46be51c4 | 1135 | sym_arr[i1] = NULL; |
d2630e69 AF |
1136 | |
1137 | copy = find_imps (file_symtab, block, *argptr, sym_arr, &i1, &i2); | |
1138 | *argptr = copy; | |
1139 | } | |
1140 | ||
1141 | /* i1 now represents the TOTAL number of matches found. | |
1142 | i2 represents how many HIGH-LEVEL (struct symbol) matches, | |
1143 | which will come first in the sym_arr array. Any low-level | |
1144 | (minimal_symbol) matches will follow those. */ | |
1145 | ||
1146 | if (i1 == 1) | |
1147 | { | |
1148 | if (i2 > 0) | |
1149 | { | |
1150 | /* Already a struct symbol. */ | |
1151 | sym = sym_arr[0]; | |
1152 | } | |
1153 | else | |
1154 | { | |
1155 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr[0])); | |
1156 | if ((sym != NULL) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr[0]), SYMBOL_LINKAGE_NAME (sym)) != 0) | |
1157 | { | |
8a3fe4f8 | 1158 | warning (_("debugging symbol \"%s\" does not match selector; ignoring"), SYMBOL_LINKAGE_NAME (sym)); |
d2630e69 AF |
1159 | sym = NULL; |
1160 | } | |
1161 | } | |
1162 | ||
1163 | values.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); | |
1164 | values.nelts = 1; | |
1165 | ||
1166 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1167 | { | |
1168 | /* Canonicalize this, so it remains resolved for dylib loads. */ | |
1169 | values.sals[0] = find_function_start_sal (sym, funfirstline); | |
1170 | build_canonical_line_spec (values.sals, SYMBOL_NATURAL_NAME (sym), canonical); | |
1171 | } | |
1172 | else | |
1173 | { | |
1174 | /* The only match was a non-debuggable symbol. */ | |
46be51c4 | 1175 | values.sals[0].symtab = NULL; |
d2630e69 AF |
1176 | values.sals[0].line = 0; |
1177 | values.sals[0].end = 0; | |
1178 | values.sals[0].pc = SYMBOL_VALUE_ADDRESS (sym_arr[0]); | |
1179 | } | |
1180 | return values; | |
1181 | } | |
1182 | ||
1183 | if (i1 > 1) | |
1184 | { | |
1185 | /* More than one match. The user must choose one or more. */ | |
1186 | return decode_line_2 (sym_arr, i2, funfirstline, canonical); | |
1187 | } | |
1188 | ||
1189 | return values; | |
1190 | } | |
1191 | ||
614b3b14 | 1192 | /* This handles C++ and Java compound data structures. P should point |
17763fd9 EZ |
1193 | at the first component separator, i.e. double-colon or period. As |
1194 | an example, on entrance to this function we could have ARGPTR | |
1195 | pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */ | |
614b3b14 DC |
1196 | |
1197 | static struct symtabs_and_lines | |
1198 | decode_compound (char **argptr, int funfirstline, char ***canonical, | |
f3a5f1de | 1199 | char *saved_arg, char *p, int *not_found_ptr) |
614b3b14 DC |
1200 | { |
1201 | struct symtabs_and_lines values; | |
93d91629 | 1202 | char *p2; |
614b3b14 DC |
1203 | char *saved_arg2 = *argptr; |
1204 | char *temp_end; | |
1205 | struct symbol *sym; | |
614b3b14 DC |
1206 | char *copy; |
1207 | struct symbol *sym_class; | |
614b3b14 DC |
1208 | struct symbol **sym_arr; |
1209 | struct type *t; | |
1210 | ||
17763fd9 EZ |
1211 | /* First check for "global" namespace specification, of the form |
1212 | "::foo". If found, skip over the colons and jump to normal | |
1213 | symbol processing. I.e. the whole line specification starts with | |
1214 | "::" (note the condition that *argptr == p). */ | |
614b3b14 DC |
1215 | if (p[0] == ':' |
1216 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
1217 | saved_arg2 += 2; | |
1218 | ||
87b3ede8 DC |
1219 | /* Given our example "AAA::inA::fun", we have two cases to consider: |
1220 | ||
1221 | 1) AAA::inA is the name of a class. In that case, presumably it | |
1222 | has a method called "fun"; we then look up that method using | |
1223 | find_method. | |
1224 | ||
1225 | 2) AAA::inA isn't the name of a class. In that case, either the | |
1226 | user made a typo or AAA::inA is the name of a namespace. | |
1227 | Either way, we just look up AAA::inA::fun with lookup_symbol. | |
1228 | ||
1229 | Thus, our first task is to find everything before the last set of | |
1230 | double-colons and figure out if it's the name of a class. So we | |
1231 | first loop through all of the double-colons. */ | |
614b3b14 | 1232 | |
a04257e6 | 1233 | p2 = p; /* Save for restart. */ |
17763fd9 EZ |
1234 | |
1235 | /* This is very messy. Following the example above we have now the | |
1236 | following pointers: | |
1237 | p -> "::inA::fun" | |
1238 | argptr -> "AAA::inA::fun | |
1239 | saved_arg -> "AAA::inA::fun | |
1240 | saved_arg2 -> "AAA::inA::fun | |
1241 | p2 -> "::inA::fun". */ | |
1242 | ||
1243 | /* In the loop below, with these strings, we'll make 2 passes, each | |
1244 | is marked in comments.*/ | |
1245 | ||
614b3b14 DC |
1246 | while (1) |
1247 | { | |
a04257e6 | 1248 | /* Move pointer up to next possible class/namespace token. */ |
17763fd9 | 1249 | |
a04257e6 | 1250 | p = p2 + 1; /* Restart with old value +1. */ |
17763fd9 EZ |
1251 | |
1252 | /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun", | |
1253 | i.e. if there is a double-colon, p will now point to the | |
1254 | second colon. */ | |
87b3ede8 | 1255 | /* PASS2: p2->"::fun", p->":fun" */ |
17763fd9 | 1256 | |
a04257e6 | 1257 | /* Move pointer ahead to next double-colon. */ |
614b3b14 DC |
1258 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) |
1259 | { | |
1260 | if (p[0] == '<') | |
1261 | { | |
1262 | temp_end = find_template_name_end (p); | |
1263 | if (!temp_end) | |
8a3fe4f8 | 1264 | error (_("malformed template specification in command")); |
614b3b14 DC |
1265 | p = temp_end; |
1266 | } | |
17763fd9 EZ |
1267 | /* Note that, since, at the start of this loop, p would be |
1268 | pointing to the second colon in a double-colon, we only | |
1269 | satisfy the condition below if there is another | |
1270 | double-colon to the right (after). I.e. there is another | |
1271 | component that can be a class or a namespace. I.e, if at | |
1272 | the beginning of this loop (PASS1), we had | |
1273 | p->":inA::fun", we'll trigger this when p has been | |
1274 | advanced to point to "::fun". */ | |
87b3ede8 | 1275 | /* PASS2: we will not trigger this. */ |
614b3b14 | 1276 | else if ((p[0] == ':') && (p[1] == ':')) |
a04257e6 | 1277 | break; /* Found double-colon. */ |
614b3b14 | 1278 | else |
87b3ede8 DC |
1279 | /* PASS2: We'll keep getting here, until p->"", at which point |
1280 | we exit this loop. */ | |
614b3b14 DC |
1281 | p++; |
1282 | } | |
1283 | ||
1284 | if (*p != ':') | |
17763fd9 EZ |
1285 | break; /* Out of the while (1). This would happen |
1286 | for instance if we have looked up | |
1287 | unsuccessfully all the components of the | |
87b3ede8 | 1288 | string, and p->""(PASS2) */ |
17763fd9 EZ |
1289 | |
1290 | /* We get here if p points to ' ', '\t', '\'', "::" or ""(i.e | |
1291 | string ended). */ | |
1292 | /* Save restart for next time around. */ | |
1293 | p2 = p; | |
1294 | /* Restore argptr as it was on entry to this function. */ | |
1295 | *argptr = saved_arg2; | |
87b3ede8 DC |
1296 | /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun", |
1297 | p2->"::fun". */ | |
17763fd9 EZ |
1298 | |
1299 | /* All ready for next pass through the loop. */ | |
614b3b14 DC |
1300 | } /* while (1) */ |
1301 | ||
87b3ede8 DC |
1302 | |
1303 | /* Start of lookup in the symbol tables. */ | |
1304 | ||
1305 | /* Lookup in the symbol table the substring between argptr and | |
1306 | p. Note, this call changes the value of argptr. */ | |
1307 | /* Before the call, argptr->"AAA::inA::fun", | |
1308 | p->"", p2->"::fun". After the call: argptr->"fun", p, p2 | |
1309 | unchanged. */ | |
1310 | sym_class = lookup_prefix_sym (argptr, p2); | |
1311 | ||
1312 | /* If sym_class has been found, and if "AAA::inA" is a class, then | |
1313 | we're in case 1 above. So we look up "fun" as a method of that | |
1314 | class. */ | |
1315 | if (sym_class && | |
1316 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
1317 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
1318 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
1319 | { | |
1320 | /* Arg token is not digits => try it as a function name. | |
1321 | Find the next token (everything up to end or next | |
1322 | blank). */ | |
1323 | if (**argptr | |
1324 | && strchr (get_gdb_completer_quote_characters (), | |
1325 | **argptr) != NULL) | |
1326 | { | |
1327 | p = skip_quoted (*argptr); | |
1328 | *argptr = *argptr + 1; | |
1329 | } | |
1330 | else | |
1331 | { | |
1332 | /* At this point argptr->"fun". */ | |
1333 | p = *argptr; | |
1334 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
1335 | p++; | |
1336 | /* At this point p->"". String ended. */ | |
1337 | } | |
1338 | ||
1339 | /* Allocate our own copy of the substring between argptr and | |
1340 | p. */ | |
1341 | copy = (char *) alloca (p - *argptr + 1); | |
1342 | memcpy (copy, *argptr, p - *argptr); | |
1343 | copy[p - *argptr] = '\0'; | |
1344 | if (p != *argptr | |
1345 | && copy[p - *argptr - 1] | |
1346 | && strchr (get_gdb_completer_quote_characters (), | |
1347 | copy[p - *argptr - 1]) != NULL) | |
1348 | copy[p - *argptr - 1] = '\0'; | |
1349 | ||
1350 | /* At this point copy->"fun", p->"" */ | |
1351 | ||
1352 | /* No line number may be specified. */ | |
1353 | while (*p == ' ' || *p == '\t') | |
1354 | p++; | |
1355 | *argptr = p; | |
1356 | /* At this point arptr->"". */ | |
1357 | ||
1358 | /* Look for copy as a method of sym_class. */ | |
1359 | /* At this point copy->"fun", sym_class is "AAA:inA", | |
1360 | saved_arg->"AAA::inA::fun". This concludes the scanning of | |
1361 | the string for possible components matches. If we find it | |
1362 | here, we return. If not, and we are at the and of the string, | |
1363 | we'll lookup the whole string in the symbol tables. */ | |
1364 | ||
1365 | return find_method (funfirstline, canonical, saved_arg, | |
f3a5f1de | 1366 | copy, t, sym_class, not_found_ptr); |
87b3ede8 DC |
1367 | |
1368 | } /* End if symbol found */ | |
1369 | ||
1370 | ||
1371 | /* We couldn't find a class, so we're in case 2 above. We check the | |
1372 | entire name as a symbol instead. */ | |
1373 | ||
614b3b14 DC |
1374 | copy = (char *) alloca (p - saved_arg2 + 1); |
1375 | memcpy (copy, saved_arg2, p - saved_arg2); | |
a04257e6 DC |
1376 | /* Note: if is_quoted should be true, we snuff out quote here |
1377 | anyway. */ | |
614b3b14 | 1378 | copy[p - saved_arg2] = '\000'; |
a04257e6 | 1379 | /* Set argptr to skip over the name. */ |
614b3b14 | 1380 | *argptr = (*p == '\'') ? p + 1 : p; |
17763fd9 | 1381 | |
614b3b14 | 1382 | /* Look up entire name */ |
2570f2b7 | 1383 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
614b3b14 | 1384 | if (sym) |
2570f2b7 | 1385 | return symbol_found (funfirstline, canonical, copy, sym, NULL); |
614b3b14 | 1386 | |
a04257e6 DC |
1387 | /* Couldn't find any interpretation as classes/namespaces, so give |
1388 | up. The quotes are important if copy is empty. */ | |
f3a5f1de KO |
1389 | if (not_found_ptr) |
1390 | *not_found_ptr = 1; | |
614b3b14 DC |
1391 | cplusplus_error (saved_arg, |
1392 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", | |
1393 | copy); | |
1394 | } | |
1395 | ||
93d91629 DC |
1396 | /* Next come some helper functions for decode_compound. */ |
1397 | ||
1398 | /* Return the symbol corresponding to the substring of *ARGPTR ending | |
1399 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol | |
1400 | name in question, the compound object separator ("::" or "."), and | |
17763fd9 EZ |
1401 | whitespace. Note that *ARGPTR is changed whether or not the |
1402 | lookup_symbol call finds anything (i.e we return NULL). As an | |
1403 | example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */ | |
93d91629 DC |
1404 | |
1405 | static struct symbol * | |
1406 | lookup_prefix_sym (char **argptr, char *p) | |
1407 | { | |
1408 | char *p1; | |
1409 | char *copy; | |
1410 | ||
1411 | /* Extract the class name. */ | |
1412 | p1 = p; | |
1413 | while (p != *argptr && p[-1] == ' ') | |
1414 | --p; | |
1415 | copy = (char *) alloca (p - *argptr + 1); | |
1416 | memcpy (copy, *argptr, p - *argptr); | |
1417 | copy[p - *argptr] = 0; | |
1418 | ||
17763fd9 | 1419 | /* Discard the class name from the argptr. */ |
93d91629 DC |
1420 | p = p1 + (p1[0] == ':' ? 2 : 1); |
1421 | while (*p == ' ' || *p == '\t') | |
1422 | p++; | |
1423 | *argptr = p; | |
1424 | ||
17763fd9 EZ |
1425 | /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA", |
1426 | argptr->"inA::fun" */ | |
1427 | ||
2570f2b7 | 1428 | return lookup_symbol (copy, 0, STRUCT_DOMAIN, 0); |
93d91629 DC |
1429 | } |
1430 | ||
4224873a DC |
1431 | /* This finds the method COPY in the class whose type is T and whose |
1432 | symbol is SYM_CLASS. */ | |
1433 | ||
1434 | static struct symtabs_and_lines | |
1435 | find_method (int funfirstline, char ***canonical, char *saved_arg, | |
f3a5f1de | 1436 | char *copy, struct type *t, struct symbol *sym_class, int *not_found_ptr) |
4224873a DC |
1437 | { |
1438 | struct symtabs_and_lines values; | |
46be51c4 | 1439 | struct symbol *sym = NULL; |
78a11fb4 | 1440 | int i1; /* Counter for the symbol array. */ |
4224873a DC |
1441 | struct symbol **sym_arr = alloca (total_number_of_methods (t) |
1442 | * sizeof (struct symbol *)); | |
1443 | ||
78a11fb4 DC |
1444 | /* Find all methods with a matching name, and put them in |
1445 | sym_arr. */ | |
4224873a | 1446 | |
19ef5c71 | 1447 | i1 = find_methods (t, copy, SYMBOL_LANGUAGE (sym_class), sym_arr); |
4224873a | 1448 | |
4224873a DC |
1449 | if (i1 == 1) |
1450 | { | |
1451 | /* There is exactly one field with that name. */ | |
1452 | sym = sym_arr[0]; | |
1453 | ||
1454 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1455 | { | |
1456 | values.sals = (struct symtab_and_line *) | |
1457 | xmalloc (sizeof (struct symtab_and_line)); | |
1458 | values.nelts = 1; | |
1459 | values.sals[0] = find_function_start_sal (sym, | |
1460 | funfirstline); | |
1461 | } | |
1462 | else | |
1463 | { | |
15550d6b | 1464 | values.sals = NULL; |
4224873a DC |
1465 | values.nelts = 0; |
1466 | } | |
1467 | return values; | |
1468 | } | |
1469 | if (i1 > 0) | |
1470 | { | |
1471 | /* There is more than one field with that name | |
1472 | (overloaded). Ask the user which one to use. */ | |
1473 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
1474 | } | |
1475 | else | |
1476 | { | |
1477 | char *tmp; | |
1478 | ||
1479 | if (is_operator_name (copy)) | |
1480 | { | |
1481 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
1482 | strcpy (tmp, "operator "); | |
1483 | strcat (tmp, copy + 3); | |
1484 | } | |
1485 | else | |
1486 | tmp = copy; | |
f3a5f1de KO |
1487 | if (not_found_ptr) |
1488 | *not_found_ptr = 1; | |
4224873a DC |
1489 | if (tmp[0] == '~') |
1490 | cplusplus_error (saved_arg, | |
1491 | "the class `%s' does not have destructor defined\n", | |
1492 | SYMBOL_PRINT_NAME (sym_class)); | |
1493 | else | |
1494 | cplusplus_error (saved_arg, | |
1495 | "the class %s does not have any method named %s\n", | |
1496 | SYMBOL_PRINT_NAME (sym_class), tmp); | |
1497 | } | |
1498 | } | |
1499 | ||
f3c39e76 DC |
1500 | \f |
1501 | ||
1502 | /* Return the symtab associated to the filename given by the substring | |
68219205 JJ |
1503 | of *ARGPTR ending at P, and advance ARGPTR past that filename. If |
1504 | NOT_FOUND_PTR is not null and the source file is not found, store | |
1505 | boolean true at the location pointed to and do not issue an | |
1506 | error message. */ | |
f3c39e76 DC |
1507 | |
1508 | static struct symtab * | |
68219205 JJ |
1509 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed, |
1510 | int *not_found_ptr) | |
f3c39e76 DC |
1511 | { |
1512 | char *p1; | |
1513 | char *copy; | |
94cd26f8 | 1514 | struct symtab *file_symtab; |
f3c39e76 DC |
1515 | |
1516 | p1 = p; | |
1517 | while (p != *argptr && p[-1] == ' ') | |
1518 | --p; | |
1519 | if ((*p == '"') && is_quote_enclosed) | |
1520 | --p; | |
1521 | copy = (char *) alloca (p - *argptr + 1); | |
1522 | memcpy (copy, *argptr, p - *argptr); | |
a04257e6 | 1523 | /* It may have the ending quote right after the file name. */ |
f3c39e76 DC |
1524 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') |
1525 | copy[p - *argptr - 1] = 0; | |
1526 | else | |
1527 | copy[p - *argptr] = 0; | |
1528 | ||
1529 | /* Find that file's data. */ | |
94cd26f8 DC |
1530 | file_symtab = lookup_symtab (copy); |
1531 | if (file_symtab == 0) | |
f3c39e76 | 1532 | { |
68219205 | 1533 | if (not_found_ptr) |
05ff989b | 1534 | *not_found_ptr = 1; |
b96e2927 PA |
1535 | if (!have_full_symbols () && !have_partial_symbols ()) |
1536 | throw_error (NOT_FOUND_ERROR, | |
1537 | _("No symbol table is loaded. Use the \"file\" command.")); | |
109c3e39 | 1538 | throw_error (NOT_FOUND_ERROR, _("No source file named %s."), copy); |
f3c39e76 DC |
1539 | } |
1540 | ||
1541 | /* Discard the file name from the arg. */ | |
1542 | p = p1 + 1; | |
1543 | while (*p == ' ' || *p == '\t') | |
1544 | p++; | |
1545 | *argptr = p; | |
1546 | ||
94cd26f8 | 1547 | return file_symtab; |
f3c39e76 DC |
1548 | } |
1549 | ||
84fba31b DC |
1550 | \f |
1551 | ||
1552 | /* This decodes a line where the argument is all digits (possibly | |
1553 | preceded by a sign). Q should point to the end of those digits; | |
1554 | the other arguments are as usual. */ | |
1555 | ||
1556 | static struct symtabs_and_lines | |
1557 | decode_all_digits (char **argptr, struct symtab *default_symtab, | |
1558 | int default_line, char ***canonical, | |
88d262ca | 1559 | struct symtab *file_symtab, char *q) |
84fba31b DC |
1560 | |
1561 | { | |
1562 | struct symtabs_and_lines values; | |
1563 | struct symtab_and_line val; | |
1564 | ||
1565 | enum sign | |
1566 | { | |
1567 | none, plus, minus | |
1568 | } | |
1569 | sign = none; | |
1570 | ||
1571 | /* We might need a canonical line spec if no file was specified. */ | |
46be51c4 | 1572 | int need_canonical = (file_symtab == NULL) ? 1 : 0; |
84fba31b DC |
1573 | |
1574 | init_sal (&val); | |
1575 | ||
1576 | /* This is where we need to make sure that we have good defaults. | |
1577 | We must guarantee that this section of code is never executed | |
1578 | when we are called with just a function name, since | |
1579 | set_default_source_symtab_and_line uses | |
a04257e6 | 1580 | select_source_symtab that calls us with such an argument. */ |
84fba31b | 1581 | |
88d262ca | 1582 | if (file_symtab == 0 && default_symtab == 0) |
84fba31b | 1583 | { |
a04257e6 | 1584 | /* Make sure we have at least a default source file. */ |
84fba31b DC |
1585 | set_default_source_symtab_and_line (); |
1586 | initialize_defaults (&default_symtab, &default_line); | |
1587 | } | |
1588 | ||
1589 | if (**argptr == '+') | |
1590 | sign = plus, (*argptr)++; | |
1591 | else if (**argptr == '-') | |
1592 | sign = minus, (*argptr)++; | |
1593 | val.line = atoi (*argptr); | |
1594 | switch (sign) | |
1595 | { | |
1596 | case plus: | |
1597 | if (q == *argptr) | |
1598 | val.line = 5; | |
88d262ca | 1599 | if (file_symtab == 0) |
84fba31b DC |
1600 | val.line = default_line + val.line; |
1601 | break; | |
1602 | case minus: | |
1603 | if (q == *argptr) | |
1604 | val.line = 15; | |
88d262ca | 1605 | if (file_symtab == 0) |
84fba31b DC |
1606 | val.line = default_line - val.line; |
1607 | else | |
1608 | val.line = 1; | |
1609 | break; | |
1610 | case none: | |
1611 | break; /* No need to adjust val.line. */ | |
1612 | } | |
1613 | ||
1614 | while (*q == ' ' || *q == '\t') | |
1615 | q++; | |
1616 | *argptr = q; | |
88d262ca DC |
1617 | if (file_symtab == 0) |
1618 | file_symtab = default_symtab; | |
84fba31b DC |
1619 | |
1620 | /* It is possible that this source file has more than one symtab, | |
1621 | and that the new line number specification has moved us from the | |
88d262ca DC |
1622 | default (in file_symtab) to a new one. */ |
1623 | val.symtab = find_line_symtab (file_symtab, val.line, NULL, NULL); | |
84fba31b | 1624 | if (val.symtab == 0) |
88d262ca | 1625 | val.symtab = file_symtab; |
84fba31b DC |
1626 | |
1627 | val.pc = 0; | |
1628 | values.sals = (struct symtab_and_line *) | |
1629 | xmalloc (sizeof (struct symtab_and_line)); | |
1630 | values.sals[0] = val; | |
1631 | values.nelts = 1; | |
1632 | if (need_canonical) | |
1633 | build_canonical_line_spec (values.sals, NULL, canonical); | |
ed0616c6 | 1634 | values.sals[0].explicit_line = 1; |
84fba31b DC |
1635 | return values; |
1636 | } | |
f3c39e76 | 1637 | |
614b3b14 DC |
1638 | \f |
1639 | ||
14e91ac5 DC |
1640 | /* Decode a linespec starting with a dollar sign. */ |
1641 | ||
1642 | static struct symtabs_and_lines | |
1643 | decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab, | |
88d262ca | 1644 | char ***canonical, struct symtab *file_symtab) |
14e91ac5 | 1645 | { |
4fa62494 | 1646 | LONGEST valx; |
14e91ac5 DC |
1647 | int index = 0; |
1648 | int need_canonical = 0; | |
1649 | struct symtabs_and_lines values; | |
1650 | struct symtab_and_line val; | |
1651 | char *p; | |
1652 | struct symbol *sym; | |
14e91ac5 DC |
1653 | struct minimal_symbol *msymbol; |
1654 | ||
1655 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1656 | while (*p >= '0' && *p <= '9') | |
1657 | p++; | |
a04257e6 | 1658 | if (!*p) /* Reached end of token without hitting non-digit. */ |
14e91ac5 | 1659 | { |
a04257e6 | 1660 | /* We have a value history reference. */ |
4fa62494 | 1661 | struct value *val_history; |
14e91ac5 | 1662 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
4fa62494 UW |
1663 | val_history = access_value_history ((copy[1] == '$') ? -index : index); |
1664 | if (TYPE_CODE (value_type (val_history)) != TYPE_CODE_INT) | |
8a3fe4f8 | 1665 | error (_("History values used in line specs must have integer values.")); |
4fa62494 | 1666 | valx = value_as_long (val_history); |
14e91ac5 DC |
1667 | } |
1668 | else | |
1669 | { | |
1670 | /* Not all digits -- may be user variable/function or a | |
a04257e6 | 1671 | convenience variable. */ |
14e91ac5 | 1672 | |
a04257e6 | 1673 | /* Look up entire name as a symbol first. */ |
2570f2b7 | 1674 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0); |
46be51c4 | 1675 | file_symtab = (struct symtab *) NULL; |
14e91ac5 DC |
1676 | need_canonical = 1; |
1677 | /* Symbol was found --> jump to normal symbol processing. */ | |
1678 | if (sym) | |
2570f2b7 | 1679 | return symbol_found (funfirstline, canonical, copy, sym, NULL); |
14e91ac5 | 1680 | |
a04257e6 | 1681 | /* If symbol was not found, look in minimal symbol tables. */ |
14e91ac5 | 1682 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
a04257e6 | 1683 | /* Min symbol was found --> jump to minsym processing. */ |
14e91ac5 DC |
1684 | if (msymbol) |
1685 | return minsym_found (funfirstline, msymbol); | |
1686 | ||
a04257e6 | 1687 | /* Not a user variable or function -- must be convenience variable. */ |
4fa62494 | 1688 | if (!get_internalvar_integer (lookup_internalvar (copy + 1), &valx)) |
8a3fe4f8 | 1689 | error (_("Convenience variables used in line specs must have integer values.")); |
14e91ac5 DC |
1690 | } |
1691 | ||
1692 | init_sal (&val); | |
1693 | ||
a04257e6 | 1694 | /* Either history value or convenience value from above, in valx. */ |
88d262ca | 1695 | val.symtab = file_symtab ? file_symtab : default_symtab; |
4fa62494 | 1696 | val.line = valx; |
14e91ac5 DC |
1697 | val.pc = 0; |
1698 | ||
1699 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
1700 | values.sals[0] = val; | |
1701 | values.nelts = 1; | |
1702 | ||
1703 | if (need_canonical) | |
1704 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1705 | ||
1706 | return values; | |
1707 | } | |
1708 | ||
bca02a8a DC |
1709 | \f |
1710 | ||
88d262ca | 1711 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
68219205 JJ |
1712 | look in that symtab's static variables first. If NOT_FOUND_PTR is not NULL and |
1713 | the function cannot be found, store boolean true in the location pointed to | |
1714 | and do not issue an error message. */ | |
bca02a8a DC |
1715 | |
1716 | static struct symtabs_and_lines | |
1717 | decode_variable (char *copy, int funfirstline, char ***canonical, | |
68219205 | 1718 | struct symtab *file_symtab, int *not_found_ptr) |
bca02a8a DC |
1719 | { |
1720 | struct symbol *sym; | |
bca02a8a DC |
1721 | |
1722 | struct minimal_symbol *msymbol; | |
1723 | ||
1724 | sym = lookup_symbol (copy, | |
88d262ca DC |
1725 | (file_symtab |
1726 | ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), | |
1727 | STATIC_BLOCK) | |
bca02a8a | 1728 | : get_selected_block (0)), |
2570f2b7 | 1729 | VAR_DOMAIN, 0); |
bca02a8a DC |
1730 | |
1731 | if (sym != NULL) | |
2570f2b7 | 1732 | return symbol_found (funfirstline, canonical, copy, sym, file_symtab); |
bca02a8a DC |
1733 | |
1734 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); | |
1735 | ||
1736 | if (msymbol != NULL) | |
1737 | return minsym_found (funfirstline, msymbol); | |
1738 | ||
68219205 | 1739 | if (not_found_ptr) |
05ff989b | 1740 | *not_found_ptr = 1; |
b96e2927 PA |
1741 | |
1742 | if (!have_full_symbols () | |
1743 | && !have_partial_symbols () | |
1744 | && !have_minimal_symbols ()) | |
1745 | throw_error (NOT_FOUND_ERROR, | |
1746 | _("No symbol table is loaded. Use the \"file\" command.")); | |
109c3e39 | 1747 | throw_error (NOT_FOUND_ERROR, _("Function \"%s\" not defined."), copy); |
bca02a8a DC |
1748 | } |
1749 | ||
1750 | ||
14e91ac5 DC |
1751 | \f |
1752 | ||
413dad4d DC |
1753 | /* Now come some functions that are called from multiple places within |
1754 | decode_line_1. */ | |
1755 | ||
1756 | /* We've found a symbol SYM to associate with our linespec; build a | |
1757 | corresponding struct symtabs_and_lines. */ | |
1758 | ||
1759 | static struct symtabs_and_lines | |
1760 | symbol_found (int funfirstline, char ***canonical, char *copy, | |
2570f2b7 | 1761 | struct symbol *sym, struct symtab *file_symtab) |
413dad4d DC |
1762 | { |
1763 | struct symtabs_and_lines values; | |
1764 | ||
1765 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
50641945 | 1766 | { |
413dad4d | 1767 | /* Arg is the name of a function */ |
50641945 FN |
1768 | values.sals = (struct symtab_and_line *) |
1769 | xmalloc (sizeof (struct symtab_and_line)); | |
413dad4d DC |
1770 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
1771 | values.nelts = 1; | |
1772 | ||
1773 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1774 | the line containing the parameters or thereabouts, not | |
1775 | the first line of code. */ | |
1776 | ||
1777 | /* We might need a canonical line spec if it is a static | |
1778 | function. */ | |
88d262ca | 1779 | if (file_symtab == 0) |
50641945 | 1780 | { |
2570f2b7 | 1781 | struct blockvector *bv = BLOCKVECTOR (SYMBOL_SYMTAB (sym)); |
413dad4d | 1782 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); |
176620f1 | 1783 | if (lookup_block_symbol (b, copy, NULL, VAR_DOMAIN) != NULL) |
413dad4d | 1784 | build_canonical_line_spec (values.sals, copy, canonical); |
50641945 | 1785 | } |
50641945 FN |
1786 | return values; |
1787 | } | |
413dad4d DC |
1788 | else |
1789 | { | |
1790 | if (funfirstline) | |
8a3fe4f8 | 1791 | error (_("\"%s\" is not a function"), copy); |
413dad4d DC |
1792 | else if (SYMBOL_LINE (sym) != 0) |
1793 | { | |
1794 | /* We know its line number. */ | |
1795 | values.sals = (struct symtab_and_line *) | |
1796 | xmalloc (sizeof (struct symtab_and_line)); | |
1797 | values.nelts = 1; | |
1798 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
2570f2b7 | 1799 | values.sals[0].symtab = SYMBOL_SYMTAB (sym); |
413dad4d DC |
1800 | values.sals[0].line = SYMBOL_LINE (sym); |
1801 | return values; | |
1802 | } | |
1803 | else | |
1804 | /* This can happen if it is compiled with a compiler which doesn't | |
1805 | put out line numbers for variables. */ | |
1806 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1807 | and return? For example, "info line foo" could print | |
1808 | the address. */ | |
8a3fe4f8 | 1809 | error (_("Line number not known for symbol \"%s\""), copy); |
413dad4d DC |
1810 | } |
1811 | } | |
50641945 | 1812 | |
413dad4d DC |
1813 | /* We've found a minimal symbol MSYMBOL to associate with our |
1814 | linespec; build a corresponding struct symtabs_and_lines. */ | |
50641945 | 1815 | |
413dad4d DC |
1816 | static struct symtabs_and_lines |
1817 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) | |
1818 | { | |
bccdca4a UW |
1819 | struct objfile *objfile = msymbol_objfile (msymbol); |
1820 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
413dad4d | 1821 | struct symtabs_and_lines values; |
bccdca4a | 1822 | CORE_ADDR pc; |
413dad4d DC |
1823 | |
1824 | values.sals = (struct symtab_and_line *) | |
1825 | xmalloc (sizeof (struct symtab_and_line)); | |
1826 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
714835d5 UW |
1827 | (struct obj_section *) 0, 0); |
1828 | values.sals[0].section = SYMBOL_OBJ_SECTION (msymbol); | |
bccdca4a UW |
1829 | |
1830 | /* The minimal symbol might point to a function descriptor; | |
1831 | resolve it to the actual code address instead. */ | |
1832 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, | |
1833 | values.sals[0].pc, | |
1834 | ¤t_target); | |
1835 | if (pc != values.sals[0].pc) | |
1836 | values.sals[0] = find_pc_sect_line (pc, NULL, 0); | |
1837 | ||
413dad4d DC |
1838 | if (funfirstline) |
1839 | { | |
e48883f7 DJ |
1840 | struct symtab_and_line sal; |
1841 | ||
bccdca4a UW |
1842 | values.sals[0].pc = find_function_start_pc (gdbarch, |
1843 | values.sals[0].pc, | |
1844 | values.sals[0].section); | |
e48883f7 DJ |
1845 | |
1846 | sal = find_pc_sect_line (values.sals[0].pc, values.sals[0].section, 0); | |
1847 | ||
1848 | /* Check if SKIP_PROLOGUE left us in mid-line, and the next | |
1849 | line is still part of the same function. If there is no | |
1850 | line information here, sal.pc will be the passed in PC. */ | |
1851 | if (sal.pc != values.sals[0].pc | |
1852 | && (lookup_minimal_symbol_by_pc_section (values.sals[0].pc, | |
1853 | values.sals[0].section) | |
1854 | == lookup_minimal_symbol_by_pc_section (sal.end, | |
1855 | values.sals[0].section))) | |
1856 | /* Recalculate the line number (might not be N+1). */ | |
1857 | values.sals[0] = find_pc_sect_line (sal.end, values.sals[0].section, 0); | |
413dad4d | 1858 | } |
e48883f7 | 1859 | |
413dad4d DC |
1860 | values.nelts = 1; |
1861 | return values; | |
50641945 | 1862 | } |