File: | src/gnu/usr.bin/binutils/gdb/linespec.c |
Warning: | line 1677, column 7 Value stored to 'need_canonical' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
1 | /* Parser for linespec for the GNU debugger, GDB. |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
4 | Free Software Foundation, Inc. |
5 | |
6 | This file is part of GDB. |
7 | |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by |
10 | the Free Software Foundation; either version 2 of the License, or |
11 | (at your option) any later version. |
12 | |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | GNU General Public License for more details. |
17 | |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software |
20 | Foundation, Inc., 59 Temple Place - Suite 330, |
21 | Boston, MA 02111-1307, USA. */ |
22 | |
23 | #include "defs.h" |
24 | #include "symtab.h" |
25 | #include "frame.h" |
26 | #include "command.h" |
27 | #include "symfile.h" |
28 | #include "objfiles.h" |
29 | #include "source.h" |
30 | #include "demangle.h" |
31 | #include "value.h" |
32 | #include "completer.h" |
33 | #include "cp-abi.h" |
34 | #include "parser-defs.h" |
35 | #include "block.h" |
36 | #include "objc-lang.h" |
37 | #include "linespec.h" |
38 | |
39 | /* We share this one with symtab.c, but it is not exported widely. */ |
40 | |
41 | extern char *operator_chars (char *, char **); |
42 | |
43 | /* Prototypes for local functions */ |
44 | |
45 | static void initialize_defaults (struct symtab **default_symtab, |
46 | int *default_line); |
47 | |
48 | static void set_flags (char *arg, int *is_quoted, char **paren_pointer); |
49 | |
50 | static struct symtabs_and_lines decode_indirect (char **argptr); |
51 | |
52 | static char *locate_first_half (char **argptr, int *is_quote_enclosed); |
53 | |
54 | static struct symtabs_and_lines decode_objc (char **argptr, |
55 | int funfirstline, |
56 | struct symtab *file_symtab, |
57 | char ***canonical, |
58 | char *saved_arg); |
59 | |
60 | static struct symtabs_and_lines decode_compound (char **argptr, |
61 | int funfirstline, |
62 | char ***canonical, |
63 | char *saved_arg, |
64 | char *p); |
65 | |
66 | static struct symbol *lookup_prefix_sym (char **argptr, char *p); |
67 | |
68 | static struct symtabs_and_lines find_method (int funfirstline, |
69 | char ***canonical, |
70 | char *saved_arg, |
71 | char *copy, |
72 | struct type *t, |
73 | struct symbol *sym_class); |
74 | |
75 | static int collect_methods (char *copy, struct type *t, |
76 | struct symbol **sym_arr); |
77 | |
78 | static NORETURN void cplusplus_error (const char *name, |
79 | const char *fmt, ...) |
80 | ATTR_NORETURN__attribute__ ((noreturn)) ATTR_FORMAT (printf, 2, 3)__attribute__ ((format(printf, 2, 3))); |
81 | |
82 | static int total_number_of_methods (struct type *type); |
83 | |
84 | static int find_methods (struct type *, char *, struct symbol **); |
85 | |
86 | static int add_matching_methods (int method_counter, struct type *t, |
87 | struct symbol **sym_arr); |
88 | |
89 | static int add_constructors (int method_counter, struct type *t, |
90 | struct symbol **sym_arr); |
91 | |
92 | static void build_canonical_line_spec (struct symtab_and_line *, |
93 | char *, char ***); |
94 | |
95 | static char *find_toplevel_char (char *s, char c); |
96 | |
97 | static int is_objc_method_format (const char *s); |
98 | |
99 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], |
100 | int, int, char ***); |
101 | |
102 | static struct symtab *symtab_from_filename (char **argptr, |
103 | char *p, int is_quote_enclosed, |
104 | int *not_found_ptr); |
105 | |
106 | static struct |
107 | symtabs_and_lines decode_all_digits (char **argptr, |
108 | struct symtab *default_symtab, |
109 | int default_line, |
110 | char ***canonical, |
111 | struct symtab *file_symtab, |
112 | char *q); |
113 | |
114 | static struct symtabs_and_lines decode_dollar (char *copy, |
115 | int funfirstline, |
116 | struct symtab *default_symtab, |
117 | char ***canonical, |
118 | struct symtab *file_symtab); |
119 | |
120 | static struct symtabs_and_lines decode_variable (char *copy, |
121 | int funfirstline, |
122 | char ***canonical, |
123 | struct symtab *file_symtab, |
124 | int *not_found_ptr); |
125 | |
126 | static struct |
127 | symtabs_and_lines symbol_found (int funfirstline, |
128 | char ***canonical, |
129 | char *copy, |
130 | struct symbol *sym, |
131 | struct symtab *file_symtab, |
132 | struct symtab *sym_symtab); |
133 | |
134 | static struct |
135 | symtabs_and_lines minsym_found (int funfirstline, |
136 | struct minimal_symbol *msymbol); |
137 | |
138 | /* Helper functions. */ |
139 | |
140 | /* Issue a helpful hint on using the command completion feature on |
141 | single quoted demangled C++ symbols as part of the completion |
142 | error. */ |
143 | |
144 | static NORETURN void |
145 | cplusplus_error (const char *name, const char *fmt, ...) |
146 | { |
147 | struct ui_file *tmp_stream; |
148 | tmp_stream = mem_fileopen (); |
149 | make_cleanup_ui_file_delete (tmp_stream); |
150 | |
151 | { |
152 | va_list args; |
153 | va_start (args, fmt)__builtin_va_start(args, fmt); |
154 | vfprintf_unfiltered (tmp_stream, fmt, args); |
155 | va_end (args)__builtin_va_end(args); |
156 | } |
157 | |
158 | while (*name == '\'') |
159 | name++; |
160 | fprintf_unfiltered (tmp_stream, |
161 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" |
162 | "(Note leading single quote.)"), |
163 | name, name); |
164 | error_stream (tmp_stream); |
165 | } |
166 | |
167 | /* Return the number of methods described for TYPE, including the |
168 | methods from types it derives from. This can't be done in the symbol |
169 | reader because the type of the baseclass might still be stubbed |
170 | when the definition of the derived class is parsed. */ |
171 | |
172 | static int |
173 | total_number_of_methods (struct type *type) |
174 | { |
175 | int n; |
176 | int count; |
177 | |
178 | CHECK_TYPEDEF (type)(type) = check_typedef (type); |
179 | if (TYPE_CPLUS_SPECIFIC (type)(type)->main_type->type_specific.cplus_stuff == NULL((void*)0)) |
180 | return 0; |
181 | count = TYPE_NFN_FIELDS_TOTAL (type)(type)->main_type->type_specific.cplus_stuff->nfn_fields_total; |
182 | |
183 | for (n = 0; n < TYPE_N_BASECLASSES (type)(type)->main_type->type_specific.cplus_stuff->n_baseclasses; n++) |
184 | count += total_number_of_methods (TYPE_BASECLASS (type, n)(type)->main_type->fields[n].type); |
185 | |
186 | return count; |
187 | } |
188 | |
189 | /* Recursive helper function for decode_line_1. |
190 | Look for methods named NAME in type T. |
191 | Return number of matches. |
192 | Put matches in SYM_ARR, which should have been allocated with |
193 | a size of total_number_of_methods (T) * sizeof (struct symbol *). |
194 | Note that this function is g++ specific. */ |
195 | |
196 | static int |
197 | find_methods (struct type *t, char *name, struct symbol **sym_arr) |
198 | { |
199 | int i1 = 0; |
200 | int ibase; |
201 | char *class_name = type_name_no_tag (t); |
202 | |
203 | /* Ignore this class if it doesn't have a name. This is ugly, but |
204 | unless we figure out how to get the physname without the name of |
205 | the class, then the loop can't do any good. */ |
206 | if (class_name |
207 | && (lookup_symbol (class_name, (struct block *) NULL((void*)0), |
208 | STRUCT_DOMAIN, (int *) NULL((void*)0), |
209 | (struct symtab **) NULL((void*)0)))) |
210 | { |
211 | int method_counter; |
212 | int name_len = strlen (name); |
213 | |
214 | CHECK_TYPEDEF (t)(t) = check_typedef (t); |
215 | |
216 | /* Loop over each method name. At this level, all overloads of a name |
217 | are counted as a single name. There is an inner loop which loops over |
218 | each overload. */ |
219 | |
220 | for (method_counter = TYPE_NFN_FIELDS (t)(t)->main_type->type_specific.cplus_stuff->nfn_fields - 1; |
221 | method_counter >= 0; |
222 | --method_counter) |
223 | { |
224 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].name; |
225 | char dem_opname[64]; |
226 | |
227 | if (strncmp (method_name, "__", 2) == 0 || |
228 | strncmp (method_name, "op", 2) == 0 || |
229 | strncmp (method_name, "type", 4) == 0) |
230 | { |
231 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI(1 << 1))) |
232 | method_name = dem_opname; |
233 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) |
234 | method_name = dem_opname; |
235 | } |
236 | |
237 | if (strcmp_iw (name, method_name) == 0) |
238 | /* Find all the overloaded methods with that name. */ |
239 | i1 += add_matching_methods (method_counter, t, |
240 | sym_arr + i1); |
241 | else if (strncmp (class_name, name, name_len) == 0 |
242 | && (class_name[name_len] == '\0' |
243 | || class_name[name_len] == '<')) |
244 | i1 += add_constructors (method_counter, t, |
245 | sym_arr + i1); |
246 | } |
247 | } |
248 | |
249 | /* Only search baseclasses if there is no match yet, since names in |
250 | derived classes override those in baseclasses. |
251 | |
252 | FIXME: The above is not true; it is only true of member functions |
253 | if they have the same number of arguments (??? - section 13.1 of the |
254 | ARM says the function members are not in the same scope but doesn't |
255 | really spell out the rules in a way I understand. In any case, if |
256 | the number of arguments differ this is a case in which we can overload |
257 | rather than hiding without any problem, and gcc 2.4.5 does overload |
258 | rather than hiding in this case). */ |
259 | |
260 | if (i1 == 0) |
261 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t)(t)->main_type->type_specific.cplus_stuff->n_baseclasses; ibase++) |
262 | i1 += find_methods (TYPE_BASECLASS (t, ibase)(t)->main_type->fields[ibase].type, name, sym_arr + i1); |
263 | |
264 | return i1; |
265 | } |
266 | |
267 | /* Add the symbols associated to methods of the class whose type is T |
268 | and whose name matches the method indexed by METHOD_COUNTER in the |
269 | array SYM_ARR. Return the number of methods added. */ |
270 | |
271 | static int |
272 | add_matching_methods (int method_counter, struct type *t, |
273 | struct symbol **sym_arr) |
274 | { |
275 | int field_counter; |
276 | int i1 = 0; |
277 | |
278 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].length - 1; |
279 | field_counter >= 0; |
280 | --field_counter) |
281 | { |
282 | struct fn_field *f; |
283 | char *phys_name; |
284 | |
285 | f = TYPE_FN_FIELDLIST1 (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].fn_fields; |
286 | |
287 | if (TYPE_FN_FIELD_STUB (f, field_counter)((f)[field_counter].is_stub)) |
288 | { |
289 | char *tmp_name; |
290 | |
291 | tmp_name = gdb_mangle_name (t, |
292 | method_counter, |
293 | field_counter); |
294 | phys_name = alloca (strlen (tmp_name) + 1)__builtin_alloca(strlen (tmp_name) + 1); |
295 | strcpy (phys_name, tmp_name); |
296 | xfree (tmp_name); |
297 | } |
298 | else |
299 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter)(f)[field_counter].physname; |
300 | |
301 | /* Destructor is handled by caller, don't add it to |
302 | the list. */ |
303 | if (is_destructor_name (phys_name) != 0) |
304 | continue; |
305 | |
306 | sym_arr[i1] = lookup_symbol (phys_name, |
307 | NULL((void*)0), VAR_DOMAIN, |
308 | (int *) NULL((void*)0), |
309 | (struct symtab **) NULL((void*)0)); |
310 | if (sym_arr[i1]) |
311 | i1++; |
312 | else |
313 | { |
314 | /* This error message gets printed, but the method |
315 | still seems to be found |
316 | fputs_filtered("(Cannot find method ", gdb_stdout); |
317 | fprintf_symbol_filtered (gdb_stdout, phys_name, |
318 | language_cplus, |
319 | DMGL_PARAMS | DMGL_ANSI); |
320 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); |
321 | */ |
322 | } |
323 | } |
324 | |
325 | return i1; |
326 | } |
327 | |
328 | /* Add the symbols associated to constructors of the class whose type |
329 | is CLASS_TYPE and which are indexed by by METHOD_COUNTER to the |
330 | array SYM_ARR. Return the number of methods added. */ |
331 | |
332 | static int |
333 | add_constructors (int method_counter, struct type *t, |
334 | struct symbol **sym_arr) |
335 | { |
336 | int field_counter; |
337 | int i1 = 0; |
338 | |
339 | /* For GCC 3.x and stabs, constructors and destructors |
340 | have names like __base_ctor and __complete_dtor. |
341 | Check the physname for now if we're looking for a |
342 | constructor. */ |
343 | for (field_counter |
344 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].length - 1; |
345 | field_counter >= 0; |
346 | --field_counter) |
347 | { |
348 | struct fn_field *f; |
349 | char *phys_name; |
350 | |
351 | f = TYPE_FN_FIELDLIST1 (t, method_counter)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [method_counter].fn_fields; |
352 | |
353 | /* GCC 3.x will never produce stabs stub methods, so |
354 | we don't need to handle this case. */ |
355 | if (TYPE_FN_FIELD_STUB (f, field_counter)((f)[field_counter].is_stub)) |
356 | continue; |
357 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter)(f)[field_counter].physname; |
358 | if (! is_constructor_name (phys_name)) |
359 | continue; |
360 | |
361 | /* If this method is actually defined, include it in the |
362 | list. */ |
363 | sym_arr[i1] = lookup_symbol (phys_name, |
364 | NULL((void*)0), VAR_DOMAIN, |
365 | (int *) NULL((void*)0), |
366 | (struct symtab **) NULL((void*)0)); |
367 | if (sym_arr[i1]) |
368 | i1++; |
369 | } |
370 | |
371 | return i1; |
372 | } |
373 | |
374 | /* Helper function for decode_line_1. |
375 | Build a canonical line spec in CANONICAL if it is non-NULL and if |
376 | the SAL has a symtab. |
377 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. |
378 | If SYMNAME is NULL the line number from SAL is used and the canonical |
379 | line spec is `filename:linenum'. */ |
380 | |
381 | static void |
382 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, |
383 | char ***canonical) |
384 | { |
385 | char **canonical_arr; |
386 | char *canonical_name; |
387 | char *filename; |
388 | struct symtab *s = sal->symtab; |
389 | |
390 | if (s == (struct symtab *) NULL((void*)0) |
391 | || s->filename == (char *) NULL((void*)0) |
392 | || canonical == (char ***) NULL((void*)0)) |
393 | return; |
394 | |
395 | canonical_arr = (char **) xmalloc (sizeof (char *)); |
396 | *canonical = canonical_arr; |
397 | |
398 | filename = s->filename; |
399 | if (symname != NULL((void*)0)) |
400 | { |
401 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); |
402 | sprintf (canonical_name, "%s:%s", filename, symname); |
403 | } |
404 | else |
405 | { |
406 | canonical_name = xmalloc (strlen (filename) + 30); |
407 | sprintf (canonical_name, "%s:%d", filename, sal->line); |
408 | } |
409 | canonical_arr[0] = canonical_name; |
410 | } |
411 | |
412 | |
413 | |
414 | /* Find an instance of the character C in the string S that is outside |
415 | of all parenthesis pairs, single-quoted strings, and double-quoted |
416 | strings. Also, ignore the char within a template name, like a ',' |
417 | within foo<int, int>. */ |
418 | |
419 | static char * |
420 | find_toplevel_char (char *s, char c) |
421 | { |
422 | int quoted = 0; /* zero if we're not in quotes; |
423 | '"' if we're in a double-quoted string; |
424 | '\'' if we're in a single-quoted string. */ |
425 | int depth = 0; /* Number of unclosed parens we've seen. */ |
426 | char *scan; |
427 | |
428 | for (scan = s; *scan; scan++) |
429 | { |
430 | if (quoted) |
431 | { |
432 | if (*scan == quoted) |
433 | quoted = 0; |
434 | else if (*scan == '\\' && *(scan + 1)) |
435 | scan++; |
436 | } |
437 | else if (*scan == c && ! quoted && depth == 0) |
438 | return scan; |
439 | else if (*scan == '"' || *scan == '\'') |
440 | quoted = *scan; |
441 | else if (*scan == '(' || *scan == '<') |
442 | depth++; |
443 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
444 | depth--; |
445 | } |
446 | |
447 | return 0; |
448 | } |
449 | |
450 | /* Determines if the gives string corresponds to an Objective-C method |
451 | representation, such as -[Foo bar:] or +[Foo bar]. Objective-C symbols |
452 | are allowed to have spaces and parentheses in them. */ |
453 | |
454 | static int |
455 | is_objc_method_format (const char *s) |
456 | { |
457 | if (s == NULL((void*)0) || *s == '\0') |
458 | return 0; |
459 | /* Handle arguments with the format FILENAME:SYMBOL. */ |
460 | if ((s[0] == ':') && (strchr ("+-", s[1]) != NULL((void*)0)) |
461 | && (s[2] == '[') && strchr(s, ']')) |
462 | return 1; |
463 | /* Handle arguments that are just SYMBOL. */ |
464 | else if ((strchr ("+-", s[0]) != NULL((void*)0)) && (s[1] == '[') && strchr(s, ']')) |
465 | return 1; |
466 | return 0; |
467 | } |
468 | |
469 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to |
470 | operate on (ask user if necessary). |
471 | If CANONICAL is non-NULL return a corresponding array of mangled names |
472 | as canonical line specs there. */ |
473 | |
474 | static struct symtabs_and_lines |
475 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, |
476 | char ***canonical) |
477 | { |
478 | struct symtabs_and_lines values, return_values; |
479 | char *args, *arg1; |
480 | int i; |
481 | char *prompt; |
482 | char *symname; |
483 | struct cleanup *old_chain; |
484 | char **canonical_arr = (char **) NULL((void*)0); |
485 | |
486 | values.sals = (struct symtab_and_line *) |
487 | alloca (nelts * sizeof (struct symtab_and_line))__builtin_alloca(nelts * sizeof (struct symtab_and_line)); |
488 | return_values.sals = (struct symtab_and_line *) |
489 | xmalloc (nelts * sizeof (struct symtab_and_line)); |
490 | old_chain = make_cleanup (xfree, return_values.sals); |
491 | |
492 | if (canonical) |
493 | { |
494 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); |
495 | make_cleanup (xfree, canonical_arr); |
496 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
497 | *canonical = canonical_arr; |
498 | } |
499 | |
500 | i = 0; |
501 | printf_unfiltered ("[0] cancel\n[1] all\n"); |
502 | while (i < nelts) |
503 | { |
504 | init_sal (&return_values.sals[i]); /* Initialize to zeroes. */ |
505 | init_sal (&values.sals[i]); |
506 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i])(sym_arr[i])->aclass == LOC_BLOCK) |
507 | { |
508 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); |
509 | if (values.sals[i].symtab) |
510 | printf_unfiltered ("[%d] %s at %s:%d\n", |
511 | (i + 2), |
512 | SYMBOL_PRINT_NAME (sym_arr[i])(demangle ? (symbol_natural_name (&(sym_arr[i])->ginfo )) : (sym_arr[i])->ginfo.name), |
513 | values.sals[i].symtab->filename, |
514 | values.sals[i].line); |
515 | else |
516 | printf_unfiltered ("[%d] %s at ?FILE:%d [No symtab? Probably broken debug info...]\n", |
517 | (i + 2), |
518 | SYMBOL_PRINT_NAME (sym_arr[i])(demangle ? (symbol_natural_name (&(sym_arr[i])->ginfo )) : (sym_arr[i])->ginfo.name), |
519 | values.sals[i].line); |
520 | |
521 | } |
522 | else |
523 | printf_unfiltered ("?HERE\n"); |
524 | i++; |
525 | } |
526 | |
527 | prompt = getenv ("PS2"); |
528 | if (prompt == NULL((void*)0)) |
529 | { |
530 | prompt = "> "; |
531 | } |
532 | args = command_line_input (prompt, 0, "overload-choice"); |
533 | |
534 | if (args == 0 || *args == 0) |
535 | error_no_arg ("one or more choice numbers"); |
536 | |
537 | i = 0; |
538 | while (*args) |
539 | { |
540 | int num; |
541 | |
542 | arg1 = args; |
543 | while (*arg1 >= '0' && *arg1 <= '9') |
544 | arg1++; |
545 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') |
546 | error ("Arguments must be choice numbers."); |
547 | |
548 | num = atoi (args); |
549 | |
550 | if (num == 0) |
551 | error ("canceled"); |
552 | else if (num == 1) |
553 | { |
554 | if (canonical_arr) |
555 | { |
556 | for (i = 0; i < nelts; i++) |
557 | { |
558 | if (canonical_arr[i] == NULL((void*)0)) |
559 | { |
560 | symname = DEPRECATED_SYMBOL_NAME (sym_arr[i])(sym_arr[i])->ginfo.name; |
561 | canonical_arr[i] = savestring (symname, strlen (symname)); |
562 | } |
563 | } |
564 | } |
565 | memcpy (return_values.sals, values.sals, |
566 | (nelts * sizeof (struct symtab_and_line))); |
567 | return_values.nelts = nelts; |
568 | discard_cleanups (old_chain); |
569 | return return_values; |
570 | } |
571 | |
572 | if (num >= nelts + 2) |
573 | { |
574 | printf_unfiltered ("No choice number %d.\n", num); |
575 | } |
576 | else |
577 | { |
578 | num -= 2; |
579 | if (values.sals[num].pc) |
580 | { |
581 | if (canonical_arr) |
582 | { |
583 | symname = DEPRECATED_SYMBOL_NAME (sym_arr[num])(sym_arr[num])->ginfo.name; |
584 | make_cleanup (xfree, symname); |
585 | canonical_arr[i] = savestring (symname, strlen (symname)); |
586 | } |
587 | return_values.sals[i++] = values.sals[num]; |
588 | values.sals[num].pc = 0; |
589 | } |
590 | else |
591 | { |
592 | printf_unfiltered ("duplicate request for %d ignored.\n", num); |
593 | } |
594 | } |
595 | |
596 | args = arg1; |
597 | while (*args == ' ' || *args == '\t') |
598 | args++; |
599 | } |
600 | return_values.nelts = i; |
601 | discard_cleanups (old_chain); |
602 | return return_values; |
603 | } |
604 | |
605 | /* The parser of linespec itself. */ |
606 | |
607 | /* Parse a string that specifies a line number. |
608 | Pass the address of a char * variable; that variable will be |
609 | advanced over the characters actually parsed. |
610 | |
611 | The string can be: |
612 | |
613 | LINENUM -- that line number in current file. PC returned is 0. |
614 | FILE:LINENUM -- that line in that file. PC returned is 0. |
615 | FUNCTION -- line number of openbrace of that function. |
616 | PC returned is the start of the function. |
617 | VARIABLE -- line number of definition of that variable. |
618 | PC returned is 0. |
619 | FILE:FUNCTION -- likewise, but prefer functions in that file. |
620 | *EXPR -- line in which address EXPR appears. |
621 | |
622 | This may all be followed by an "if EXPR", which we ignore. |
623 | |
624 | FUNCTION may be an undebuggable function found in minimal symbol table. |
625 | |
626 | If the argument FUNFIRSTLINE is nonzero, we want the first line |
627 | of real code inside a function when a function is specified, and it is |
628 | not OK to specify a variable or type to get its line number. |
629 | |
630 | DEFAULT_SYMTAB specifies the file to use if none is specified. |
631 | It defaults to current_source_symtab. |
632 | DEFAULT_LINE specifies the line number to use for relative |
633 | line numbers (that start with signs). Defaults to current_source_line. |
634 | If CANONICAL is non-NULL, store an array of strings containing the canonical |
635 | line specs there if necessary. Currently overloaded member functions and |
636 | line numbers or static functions without a filename yield a canonical |
637 | line spec. The array and the line spec strings are allocated on the heap, |
638 | it is the callers responsibility to free them. |
639 | |
640 | Note that it is possible to return zero for the symtab |
641 | if no file is validly specified. Callers must check that. |
642 | Also, the line number returned may be invalid. |
643 | |
644 | If NOT_FOUND_PTR is not null, store a boolean true/false value at the location, based |
645 | on whether or not failure occurs due to an unknown function or file. In the case |
646 | where failure does occur due to an unknown function or file, do not issue an error |
647 | message. */ |
648 | |
649 | /* We allow single quotes in various places. This is a hideous |
650 | kludge, which exists because the completer can't yet deal with the |
651 | lack of single quotes. FIXME: write a linespec_completer which we |
652 | can use as appropriate instead of make_symbol_completion_list. */ |
653 | |
654 | struct symtabs_and_lines |
655 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, |
656 | int default_line, char ***canonical, int *not_found_ptr) |
657 | { |
658 | char *p; |
659 | char *q; |
660 | /* If a file name is specified, this is its symtab. */ |
661 | struct symtab *file_symtab = NULL((void*)0); |
662 | |
663 | char *copy; |
664 | /* This is NULL if there are no parens in *ARGPTR, or a pointer to |
665 | the closing parenthesis if there are parens. */ |
666 | char *paren_pointer; |
667 | /* This says whether or not something in *ARGPTR is quoted with |
668 | completer_quotes (i.e. with single quotes). */ |
669 | int is_quoted; |
670 | /* Is part of *ARGPTR is enclosed in double quotes? */ |
671 | int is_quote_enclosed; |
672 | int is_objc_method = 0; |
673 | char *saved_arg = *argptr; |
674 | |
675 | if (not_found_ptr) |
676 | *not_found_ptr = 0; |
677 | |
678 | /* Defaults have defaults. */ |
679 | |
680 | initialize_defaults (&default_symtab, &default_line); |
681 | |
682 | /* See if arg is *PC. */ |
683 | |
684 | if (**argptr == '*') |
685 | return decode_indirect (argptr); |
686 | |
687 | /* Set various flags. 'paren_pointer' is important for overload |
688 | checking, where we allow things like: |
689 | (gdb) break c::f(int) |
690 | */ |
691 | |
692 | set_flags (*argptr, &is_quoted, &paren_pointer); |
693 | |
694 | /* Check to see if it's a multipart linespec (with colons or |
695 | periods). */ |
696 | |
697 | /* Locate the end of the first half of the linespec. |
698 | After the call, for instance, if the argptr string is "foo.c:123" |
699 | p will point at "123". If there is only one part, like "foo", p |
700 | will point to "". If this is a C++ name, like "A::B::foo", p will |
701 | point to "::B::foo". Argptr is not changed by this call. */ |
702 | |
703 | p = locate_first_half (argptr, &is_quote_enclosed); |
704 | |
705 | /* Check if this is an Objective-C method (anything that starts with |
706 | a '+' or '-' and a '['). */ |
707 | if (is_objc_method_format (p)) |
708 | { |
709 | is_objc_method = 1; |
710 | paren_pointer = NULL((void*)0); /* Just a category name. Ignore it. */ |
711 | } |
712 | |
713 | /* Check if the symbol could be an Objective-C selector. */ |
714 | |
715 | { |
716 | struct symtabs_and_lines values; |
717 | values = decode_objc (argptr, funfirstline, NULL((void*)0), |
718 | canonical, saved_arg); |
719 | if (values.sals != NULL((void*)0)) |
720 | return values; |
721 | } |
722 | |
723 | /* Does it look like there actually were two parts? */ |
724 | |
725 | if ((p[0] == ':' || p[0] == '.') && paren_pointer == NULL((void*)0)) |
726 | { |
727 | if (is_quoted) |
728 | *argptr = *argptr + 1; |
729 | |
730 | /* Is it a C++ or Java compound data structure? |
731 | The check on p[1] == ':' is capturing the case of "::", |
732 | since p[0]==':' was checked above. |
733 | Note that the call to decode_compound does everything |
734 | for us, including the lookup on the symbol table, so we |
735 | can return now. */ |
736 | |
737 | if (p[0] == '.' || p[1] == ':') |
738 | return decode_compound (argptr, funfirstline, canonical, |
739 | saved_arg, p); |
740 | |
741 | /* No, the first part is a filename; set s to be that file's |
742 | symtab. Also, move argptr past the filename. */ |
743 | |
744 | file_symtab = symtab_from_filename (argptr, p, is_quote_enclosed, |
745 | not_found_ptr); |
746 | } |
747 | #if 0 |
748 | /* No one really seems to know why this was added. It certainly |
749 | breaks the command line, though, whenever the passed |
750 | name is of the form ClassName::Method. This bit of code |
751 | singles out the class name, and if funfirstline is set (for |
752 | example, you are setting a breakpoint at this function), |
753 | you get an error. This did not occur with earlier |
754 | verions, so I am ifdef'ing this out. 3/29/99 */ |
755 | else |
756 | { |
757 | /* Check if what we have till now is a symbol name */ |
758 | |
759 | /* We may be looking at a template instantiation such |
760 | as "foo<int>". Check here whether we know about it, |
761 | instead of falling through to the code below which |
762 | handles ordinary function names, because that code |
763 | doesn't like seeing '<' and '>' in a name -- the |
764 | skip_quoted call doesn't go past them. So see if we |
765 | can figure it out right now. */ |
766 | |
767 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
768 | memcpy (copy, *argptr, p - *argptr); |
769 | copy[p - *argptr] = '\000'; |
770 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
771 | if (sym) |
772 | { |
773 | *argptr = (*p == '\'') ? p + 1 : p; |
774 | return symbol_found (funfirstline, canonical, copy, sym, |
775 | NULL((void*)0), sym_symtab); |
776 | } |
777 | /* Otherwise fall out from here and go to file/line spec |
778 | processing, etc. */ |
779 | } |
780 | #endif |
781 | |
782 | /* S is specified file's symtab, or 0 if no file specified. |
783 | arg no longer contains the file name. */ |
784 | |
785 | /* Check whether arg is all digits (and sign). */ |
786 | |
787 | q = *argptr; |
788 | if (*q == '-' || *q == '+') |
789 | q++; |
790 | while (*q >= '0' && *q <= '9') |
791 | q++; |
792 | |
793 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) |
794 | /* We found a token consisting of all digits -- at least one digit. */ |
795 | return decode_all_digits (argptr, default_symtab, default_line, |
796 | canonical, file_symtab, q); |
797 | |
798 | /* Arg token is not digits => try it as a variable name |
799 | Find the next token (everything up to end or next whitespace). */ |
800 | |
801 | if (**argptr == '$') /* May be a convenience variable. */ |
802 | /* One or two $ chars possible. */ |
803 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); |
804 | else if (is_quoted) |
805 | { |
806 | p = skip_quoted (*argptr); |
807 | if (p[-1] != '\'') |
808 | error ("Unmatched single quote."); |
809 | } |
810 | else if (is_objc_method) |
811 | { |
812 | /* allow word separators in method names for Obj-C */ |
813 | p = skip_quoted_chars (*argptr, NULL((void*)0), ""); |
814 | } |
815 | else if (paren_pointer != NULL((void*)0)) |
816 | { |
817 | p = paren_pointer + 1; |
818 | } |
819 | else |
820 | { |
821 | p = skip_quoted (*argptr); |
822 | } |
823 | |
824 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
825 | memcpy (copy, *argptr, p - *argptr); |
826 | copy[p - *argptr] = '\0'; |
827 | if (p != *argptr |
828 | && copy[0] |
829 | && copy[0] == copy[p - *argptr - 1] |
830 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL((void*)0)) |
831 | { |
832 | copy[p - *argptr - 1] = '\0'; |
833 | copy++; |
834 | } |
835 | while (*p == ' ' || *p == '\t') |
836 | p++; |
837 | *argptr = p; |
838 | |
839 | /* If it starts with $: may be a legitimate variable or routine name |
840 | (e.g. HP-UX millicode routines such as $$dyncall), or it may |
841 | be history value, or it may be a convenience variable. */ |
842 | |
843 | if (*copy == '$') |
844 | return decode_dollar (copy, funfirstline, default_symtab, |
845 | canonical, file_symtab); |
846 | |
847 | /* Look up that token as a variable. |
848 | If file specified, use that file's per-file block to start with. */ |
849 | |
850 | return decode_variable (copy, funfirstline, canonical, |
851 | file_symtab, not_found_ptr); |
852 | } |
853 | |
854 | |
855 | |
856 | /* Now, more helper functions for decode_line_1. Some conventions |
857 | that these functions follow: |
858 | |
859 | Decode_line_1 typically passes along some of its arguments or local |
860 | variables to the subfunctions. It passes the variables by |
861 | reference if they are modified by the subfunction, and by value |
862 | otherwise. |
863 | |
864 | Some of the functions have side effects that don't arise from |
865 | variables that are passed by reference. In particular, if a |
866 | function is passed ARGPTR as an argument, it modifies what ARGPTR |
867 | points to; typically, it advances *ARGPTR past whatever substring |
868 | it has just looked at. (If it doesn't modify *ARGPTR, then the |
869 | function gets passed *ARGPTR instead, which is then called ARG: see |
870 | set_flags, for example.) Also, functions that return a struct |
871 | symtabs_and_lines may modify CANONICAL, as in the description of |
872 | decode_line_1. |
873 | |
874 | If a function returns a struct symtabs_and_lines, then that struct |
875 | will immediately make its way up the call chain to be returned by |
876 | decode_line_1. In particular, all of the functions decode_XXX |
877 | calculate the appropriate struct symtabs_and_lines, under the |
878 | assumption that their argument is of the form XXX. */ |
879 | |
880 | /* First, some functions to initialize stuff at the beggining of the |
881 | function. */ |
882 | |
883 | static void |
884 | initialize_defaults (struct symtab **default_symtab, int *default_line) |
885 | { |
886 | if (*default_symtab == 0) |
887 | { |
888 | /* Use whatever we have for the default source line. We don't use |
889 | get_current_or_default_symtab_and_line as it can recurse and call |
890 | us back! */ |
891 | struct symtab_and_line cursal = |
892 | get_current_source_symtab_and_line (); |
893 | |
894 | *default_symtab = cursal.symtab; |
895 | *default_line = cursal.line; |
896 | } |
897 | } |
898 | |
899 | static void |
900 | set_flags (char *arg, int *is_quoted, char **paren_pointer) |
901 | { |
902 | char *ii; |
903 | int has_if = 0; |
904 | |
905 | /* 'has_if' is for the syntax: |
906 | (gdb) break foo if (a==b) |
907 | */ |
908 | if ((ii = strstr (arg, " if ")) != NULL((void*)0) || |
909 | (ii = strstr (arg, "\tif ")) != NULL((void*)0) || |
910 | (ii = strstr (arg, " if\t")) != NULL((void*)0) || |
911 | (ii = strstr (arg, "\tif\t")) != NULL((void*)0) || |
912 | (ii = strstr (arg, " if(")) != NULL((void*)0) || |
913 | (ii = strstr (arg, "\tif( ")) != NULL((void*)0)) |
914 | has_if = 1; |
915 | /* Temporarily zap out "if (condition)" to not confuse the |
916 | parenthesis-checking code below. This is undone below. Do not |
917 | change ii!! */ |
918 | if (has_if) |
919 | { |
920 | *ii = '\0'; |
921 | } |
922 | |
923 | *is_quoted = (*arg |
924 | && strchr (get_gdb_completer_quote_characters (), |
925 | *arg) != NULL((void*)0)); |
926 | |
927 | *paren_pointer = strchr (arg, '('); |
928 | if (*paren_pointer != NULL((void*)0)) |
929 | *paren_pointer = strrchr (*paren_pointer, ')'); |
930 | |
931 | /* Now that we're safely past the paren_pointer check, put back " if |
932 | (condition)" so outer layers can see it. */ |
933 | if (has_if) |
934 | *ii = ' '; |
935 | } |
936 | |
937 | |
938 | |
939 | /* Decode arg of the form *PC. */ |
940 | |
941 | static struct symtabs_and_lines |
942 | decode_indirect (char **argptr) |
943 | { |
944 | struct symtabs_and_lines values; |
945 | CORE_ADDR pc; |
946 | |
947 | (*argptr)++; |
948 | pc = parse_and_eval_address_1 (argptr); |
949 | |
950 | values.sals = (struct symtab_and_line *) |
951 | xmalloc (sizeof (struct symtab_and_line)); |
952 | |
953 | values.nelts = 1; |
954 | values.sals[0] = find_pc_line (pc, 0); |
955 | values.sals[0].pc = pc; |
956 | values.sals[0].section = find_pc_overlay (pc); |
957 | |
958 | return values; |
959 | } |
960 | |
961 | |
962 | |
963 | /* Locate the first half of the linespec, ending in a colon, period, |
964 | or whitespace. (More or less.) Also, check to see if *ARGPTR is |
965 | enclosed in double quotes; if so, set is_quote_enclosed, advance |
966 | ARGPTR past that and zero out the trailing double quote. |
967 | If ARGPTR is just a simple name like "main", p will point to "" |
968 | at the end. */ |
969 | |
970 | static char * |
971 | locate_first_half (char **argptr, int *is_quote_enclosed) |
972 | { |
973 | char *ii; |
974 | char *p, *p1; |
975 | int has_comma; |
976 | |
977 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM |
978 | and we must isolate the first half. Outer layers will call again later |
979 | for the second half. |
980 | |
981 | Don't count commas that appear in argument lists of overloaded |
982 | functions, or in quoted strings. It's stupid to go to this much |
983 | trouble when the rest of the function is such an obvious roach hotel. */ |
984 | ii = find_toplevel_char (*argptr, ','); |
985 | has_comma = (ii != 0); |
986 | |
987 | /* Temporarily zap out second half to not confuse the code below. |
988 | This is undone below. Do not change ii!! */ |
989 | if (has_comma) |
990 | { |
991 | *ii = '\0'; |
992 | } |
993 | |
994 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION. May also be |
995 | CLASS::MEMBER, or NAMESPACE::NAME. Look for ':', but ignore |
996 | inside of <>. */ |
997 | |
998 | p = *argptr; |
999 | if (p[0] == '"') |
1000 | { |
1001 | *is_quote_enclosed = 1; |
1002 | (*argptr)++; |
1003 | p++; |
1004 | } |
1005 | else |
1006 | *is_quote_enclosed = 0; |
1007 | for (; *p; p++) |
1008 | { |
1009 | if (p[0] == '<') |
1010 | { |
1011 | char *temp_end = find_template_name_end (p); |
1012 | if (!temp_end) |
1013 | error ("malformed template specification in command"); |
1014 | p = temp_end; |
1015 | } |
1016 | /* Check for a colon and a plus or minus and a [ (which |
1017 | indicates an Objective-C method) */ |
1018 | if (is_objc_method_format (p)) |
1019 | { |
1020 | break; |
1021 | } |
1022 | /* Check for the end of the first half of the linespec. End of |
1023 | line, a tab, a double colon or the last single colon, or a |
1024 | space. But if enclosed in double quotes we do not break on |
1025 | enclosed spaces. */ |
1026 | if (!*p |
1027 | || p[0] == '\t' |
1028 | || ((p[0] == ':') |
1029 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL((void*)0)))) |
1030 | || ((p[0] == ' ') && !*is_quote_enclosed)) |
1031 | break; |
1032 | if (p[0] == '.' && strchr (p, ':') == NULL((void*)0)) |
1033 | { |
1034 | /* Java qualified method. Find the *last* '.', since the |
1035 | others are package qualifiers. */ |
1036 | for (p1 = p; *p1; p1++) |
1037 | { |
1038 | if (*p1 == '.') |
1039 | p = p1; |
1040 | } |
1041 | break; |
1042 | } |
1043 | } |
1044 | while (p[0] == ' ' || p[0] == '\t') |
1045 | p++; |
1046 | |
1047 | /* If the closing double quote was left at the end, remove it. */ |
1048 | if (*is_quote_enclosed) |
1049 | { |
1050 | char *closing_quote = strchr (p - 1, '"'); |
1051 | if (closing_quote && closing_quote[1] == '\0') |
1052 | *closing_quote = '\0'; |
1053 | } |
1054 | |
1055 | /* Now that we've safely parsed the first half, put back ',' so |
1056 | outer layers can see it. */ |
1057 | if (has_comma) |
1058 | *ii = ','; |
1059 | |
1060 | return p; |
1061 | } |
1062 | |
1063 | |
1064 | |
1065 | /* Here's where we recognise an Objective-C Selector. An Objective C |
1066 | selector may be implemented by more than one class, therefore it |
1067 | may represent more than one method/function. This gives us a |
1068 | situation somewhat analogous to C++ overloading. If there's more |
1069 | than one method that could represent the selector, then use some of |
1070 | the existing C++ code to let the user choose one. */ |
1071 | |
1072 | struct symtabs_and_lines |
1073 | decode_objc (char **argptr, int funfirstline, struct symtab *file_symtab, |
1074 | char ***canonical, char *saved_arg) |
1075 | { |
1076 | struct symtabs_and_lines values; |
1077 | struct symbol **sym_arr = NULL((void*)0); |
1078 | struct symbol *sym = NULL((void*)0); |
1079 | char *copy = NULL((void*)0); |
1080 | struct block *block = NULL((void*)0); |
1081 | int i1 = 0; |
1082 | int i2 = 0; |
1083 | |
1084 | values.sals = NULL((void*)0); |
1085 | values.nelts = 0; |
1086 | |
1087 | if (file_symtab != NULL((void*)0)) |
1088 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab), STATIC_BLOCK)((file_symtab)->blockvector)->block[STATIC_BLOCK]; |
1089 | else |
1090 | block = get_selected_block (0); |
1091 | |
1092 | copy = find_imps (file_symtab, block, *argptr, NULL((void*)0), &i1, &i2); |
1093 | |
1094 | if (i1 > 0) |
1095 | { |
1096 | sym_arr = (struct symbol **) alloca ((i1 + 1) * sizeof (struct symbol *))__builtin_alloca((i1 + 1) * sizeof (struct symbol *)); |
1097 | sym_arr[i1] = 0; |
1098 | |
1099 | copy = find_imps (file_symtab, block, *argptr, sym_arr, &i1, &i2); |
1100 | *argptr = copy; |
1101 | } |
1102 | |
1103 | /* i1 now represents the TOTAL number of matches found. |
1104 | i2 represents how many HIGH-LEVEL (struct symbol) matches, |
1105 | which will come first in the sym_arr array. Any low-level |
1106 | (minimal_symbol) matches will follow those. */ |
1107 | |
1108 | if (i1 == 1) |
1109 | { |
1110 | if (i2 > 0) |
1111 | { |
1112 | /* Already a struct symbol. */ |
1113 | sym = sym_arr[0]; |
1114 | } |
1115 | else |
1116 | { |
1117 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (sym_arr[0])(sym_arr[0])->ginfo.value.address); |
1118 | if ((sym != NULL((void*)0)) && strcmp (SYMBOL_LINKAGE_NAME (sym_arr[0])(sym_arr[0])->ginfo.name, SYMBOL_LINKAGE_NAME (sym)(sym)->ginfo.name) != 0) |
1119 | { |
1120 | warning ("debugging symbol \"%s\" does not match selector; ignoring", SYMBOL_LINKAGE_NAME (sym)(sym)->ginfo.name); |
1121 | sym = NULL((void*)0); |
1122 | } |
1123 | } |
1124 | |
1125 | values.sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); |
1126 | values.nelts = 1; |
1127 | |
1128 | if (sym && SYMBOL_CLASS (sym)(sym)->aclass == LOC_BLOCK) |
1129 | { |
1130 | /* Canonicalize this, so it remains resolved for dylib loads. */ |
1131 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
1132 | build_canonical_line_spec (values.sals, SYMBOL_NATURAL_NAME (sym)(symbol_natural_name (&(sym)->ginfo)), canonical); |
1133 | } |
1134 | else |
1135 | { |
1136 | /* The only match was a non-debuggable symbol. */ |
1137 | values.sals[0].symtab = 0; |
1138 | values.sals[0].line = 0; |
1139 | values.sals[0].end = 0; |
1140 | values.sals[0].pc = SYMBOL_VALUE_ADDRESS (sym_arr[0])(sym_arr[0])->ginfo.value.address; |
1141 | } |
1142 | return values; |
1143 | } |
1144 | |
1145 | if (i1 > 1) |
1146 | { |
1147 | /* More than one match. The user must choose one or more. */ |
1148 | return decode_line_2 (sym_arr, i2, funfirstline, canonical); |
1149 | } |
1150 | |
1151 | return values; |
1152 | } |
1153 | |
1154 | /* This handles C++ and Java compound data structures. P should point |
1155 | at the first component separator, i.e. double-colon or period. As |
1156 | an example, on entrance to this function we could have ARGPTR |
1157 | pointing to "AAA::inA::fun" and P pointing to "::inA::fun". */ |
1158 | |
1159 | static struct symtabs_and_lines |
1160 | decode_compound (char **argptr, int funfirstline, char ***canonical, |
1161 | char *saved_arg, char *p) |
1162 | { |
1163 | struct symtabs_and_lines values; |
1164 | char *p2; |
1165 | char *saved_arg2 = *argptr; |
1166 | char *temp_end; |
1167 | struct symbol *sym; |
1168 | /* The symtab that SYM was found in. */ |
1169 | struct symtab *sym_symtab; |
1170 | char *copy; |
1171 | struct symbol *sym_class; |
1172 | struct symbol **sym_arr; |
1173 | struct type *t; |
1174 | |
1175 | /* First check for "global" namespace specification, of the form |
1176 | "::foo". If found, skip over the colons and jump to normal |
1177 | symbol processing. I.e. the whole line specification starts with |
1178 | "::" (note the condition that *argptr == p). */ |
1179 | if (p[0] == ':' |
1180 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) |
1181 | saved_arg2 += 2; |
1182 | |
1183 | /* Given our example "AAA::inA::fun", we have two cases to consider: |
1184 | |
1185 | 1) AAA::inA is the name of a class. In that case, presumably it |
1186 | has a method called "fun"; we then look up that method using |
1187 | find_method. |
1188 | |
1189 | 2) AAA::inA isn't the name of a class. In that case, either the |
1190 | user made a typo or AAA::inA is the name of a namespace. |
1191 | Either way, we just look up AAA::inA::fun with lookup_symbol. |
1192 | |
1193 | Thus, our first task is to find everything before the last set of |
1194 | double-colons and figure out if it's the name of a class. So we |
1195 | first loop through all of the double-colons. */ |
1196 | |
1197 | p2 = p; /* Save for restart. */ |
1198 | |
1199 | /* This is very messy. Following the example above we have now the |
1200 | following pointers: |
1201 | p -> "::inA::fun" |
1202 | argptr -> "AAA::inA::fun |
1203 | saved_arg -> "AAA::inA::fun |
1204 | saved_arg2 -> "AAA::inA::fun |
1205 | p2 -> "::inA::fun". */ |
1206 | |
1207 | /* In the loop below, with these strings, we'll make 2 passes, each |
1208 | is marked in comments.*/ |
1209 | |
1210 | while (1) |
1211 | { |
1212 | /* Move pointer up to next possible class/namespace token. */ |
1213 | |
1214 | p = p2 + 1; /* Restart with old value +1. */ |
1215 | |
1216 | /* PASS1: at this point p2->"::inA::fun", so p->":inA::fun", |
1217 | i.e. if there is a double-colon, p will now point to the |
1218 | second colon. */ |
1219 | /* PASS2: p2->"::fun", p->":fun" */ |
1220 | |
1221 | /* Move pointer ahead to next double-colon. */ |
1222 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) |
1223 | { |
1224 | if (p[0] == '<') |
1225 | { |
1226 | temp_end = find_template_name_end (p); |
1227 | if (!temp_end) |
1228 | error ("malformed template specification in command"); |
1229 | p = temp_end; |
1230 | } |
1231 | /* Note that, since, at the start of this loop, p would be |
1232 | pointing to the second colon in a double-colon, we only |
1233 | satisfy the condition below if there is another |
1234 | double-colon to the right (after). I.e. there is another |
1235 | component that can be a class or a namespace. I.e, if at |
1236 | the beginning of this loop (PASS1), we had |
1237 | p->":inA::fun", we'll trigger this when p has been |
1238 | advanced to point to "::fun". */ |
1239 | /* PASS2: we will not trigger this. */ |
1240 | else if ((p[0] == ':') && (p[1] == ':')) |
1241 | break; /* Found double-colon. */ |
1242 | else |
1243 | /* PASS2: We'll keep getting here, until p->"", at which point |
1244 | we exit this loop. */ |
1245 | p++; |
1246 | } |
1247 | |
1248 | if (*p != ':') |
1249 | break; /* Out of the while (1). This would happen |
1250 | for instance if we have looked up |
1251 | unsuccessfully all the components of the |
1252 | string, and p->""(PASS2) */ |
1253 | |
1254 | /* We get here if p points to ' ', '\t', '\'', "::" or ""(i.e |
1255 | string ended). */ |
1256 | /* Save restart for next time around. */ |
1257 | p2 = p; |
1258 | /* Restore argptr as it was on entry to this function. */ |
1259 | *argptr = saved_arg2; |
1260 | /* PASS1: at this point p->"::fun" argptr->"AAA::inA::fun", |
1261 | p2->"::fun". */ |
1262 | |
1263 | /* All ready for next pass through the loop. */ |
1264 | } /* while (1) */ |
1265 | |
1266 | |
1267 | /* Start of lookup in the symbol tables. */ |
1268 | |
1269 | /* Lookup in the symbol table the substring between argptr and |
1270 | p. Note, this call changes the value of argptr. */ |
1271 | /* Before the call, argptr->"AAA::inA::fun", |
1272 | p->"", p2->"::fun". After the call: argptr->"fun", p, p2 |
1273 | unchanged. */ |
1274 | sym_class = lookup_prefix_sym (argptr, p2); |
1275 | |
1276 | /* If sym_class has been found, and if "AAA::inA" is a class, then |
1277 | we're in case 1 above. So we look up "fun" as a method of that |
1278 | class. */ |
1279 | if (sym_class && |
1280 | (t = check_typedef (SYMBOL_TYPE (sym_class)(sym_class)->type), |
1281 | (TYPE_CODE (t)(t)->main_type->code == TYPE_CODE_STRUCT |
1282 | || TYPE_CODE (t)(t)->main_type->code == TYPE_CODE_UNION))) |
1283 | { |
1284 | /* Arg token is not digits => try it as a function name. |
1285 | Find the next token (everything up to end or next |
1286 | blank). */ |
1287 | if (**argptr |
1288 | && strchr (get_gdb_completer_quote_characters (), |
1289 | **argptr) != NULL((void*)0)) |
1290 | { |
1291 | p = skip_quoted (*argptr); |
1292 | *argptr = *argptr + 1; |
1293 | } |
1294 | else |
1295 | { |
1296 | /* At this point argptr->"fun". */ |
1297 | p = *argptr; |
1298 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') |
1299 | p++; |
1300 | /* At this point p->"". String ended. */ |
1301 | } |
1302 | |
1303 | /* Allocate our own copy of the substring between argptr and |
1304 | p. */ |
1305 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
1306 | memcpy (copy, *argptr, p - *argptr); |
1307 | copy[p - *argptr] = '\0'; |
1308 | if (p != *argptr |
1309 | && copy[p - *argptr - 1] |
1310 | && strchr (get_gdb_completer_quote_characters (), |
1311 | copy[p - *argptr - 1]) != NULL((void*)0)) |
1312 | copy[p - *argptr - 1] = '\0'; |
1313 | |
1314 | /* At this point copy->"fun", p->"" */ |
1315 | |
1316 | /* No line number may be specified. */ |
1317 | while (*p == ' ' || *p == '\t') |
1318 | p++; |
1319 | *argptr = p; |
1320 | /* At this point arptr->"". */ |
1321 | |
1322 | /* Look for copy as a method of sym_class. */ |
1323 | /* At this point copy->"fun", sym_class is "AAA:inA", |
1324 | saved_arg->"AAA::inA::fun". This concludes the scanning of |
1325 | the string for possible components matches. If we find it |
1326 | here, we return. If not, and we are at the and of the string, |
1327 | we'll lookup the whole string in the symbol tables. */ |
1328 | |
1329 | return find_method (funfirstline, canonical, saved_arg, |
1330 | copy, t, sym_class); |
1331 | |
1332 | } /* End if symbol found */ |
1333 | |
1334 | |
1335 | /* We couldn't find a class, so we're in case 2 above. We check the |
1336 | entire name as a symbol instead. */ |
1337 | |
1338 | copy = (char *) alloca (p - saved_arg2 + 1)__builtin_alloca(p - saved_arg2 + 1); |
1339 | memcpy (copy, saved_arg2, p - saved_arg2); |
1340 | /* Note: if is_quoted should be true, we snuff out quote here |
1341 | anyway. */ |
1342 | copy[p - saved_arg2] = '\000'; |
1343 | /* Set argptr to skip over the name. */ |
1344 | *argptr = (*p == '\'') ? p + 1 : p; |
1345 | |
1346 | /* Look up entire name */ |
1347 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
1348 | if (sym) |
1349 | return symbol_found (funfirstline, canonical, copy, sym, |
1350 | NULL((void*)0), sym_symtab); |
1351 | |
1352 | /* Couldn't find any interpretation as classes/namespaces, so give |
1353 | up. The quotes are important if copy is empty. */ |
1354 | cplusplus_error (saved_arg, |
1355 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", |
1356 | copy); |
1357 | } |
1358 | |
1359 | /* Next come some helper functions for decode_compound. */ |
1360 | |
1361 | /* Return the symbol corresponding to the substring of *ARGPTR ending |
1362 | at P, allowing whitespace. Also, advance *ARGPTR past the symbol |
1363 | name in question, the compound object separator ("::" or "."), and |
1364 | whitespace. Note that *ARGPTR is changed whether or not the |
1365 | lookup_symbol call finds anything (i.e we return NULL). As an |
1366 | example, say ARGPTR is "AAA::inA::fun" and P is "::inA::fun". */ |
1367 | |
1368 | static struct symbol * |
1369 | lookup_prefix_sym (char **argptr, char *p) |
1370 | { |
1371 | char *p1; |
1372 | char *copy; |
1373 | |
1374 | /* Extract the class name. */ |
1375 | p1 = p; |
1376 | while (p != *argptr && p[-1] == ' ') |
1377 | --p; |
1378 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
1379 | memcpy (copy, *argptr, p - *argptr); |
1380 | copy[p - *argptr] = 0; |
1381 | |
1382 | /* Discard the class name from the argptr. */ |
1383 | p = p1 + (p1[0] == ':' ? 2 : 1); |
1384 | while (*p == ' ' || *p == '\t') |
1385 | p++; |
1386 | *argptr = p; |
1387 | |
1388 | /* At this point p1->"::inA::fun", p->"inA::fun" copy->"AAA", |
1389 | argptr->"inA::fun" */ |
1390 | |
1391 | return lookup_symbol (copy, 0, STRUCT_DOMAIN, 0, |
1392 | (struct symtab **) NULL((void*)0)); |
1393 | } |
1394 | |
1395 | /* This finds the method COPY in the class whose type is T and whose |
1396 | symbol is SYM_CLASS. */ |
1397 | |
1398 | static struct symtabs_and_lines |
1399 | find_method (int funfirstline, char ***canonical, char *saved_arg, |
1400 | char *copy, struct type *t, struct symbol *sym_class) |
1401 | { |
1402 | struct symtabs_and_lines values; |
1403 | struct symbol *sym = 0; |
1404 | int i1; /* Counter for the symbol array. */ |
1405 | struct symbol **sym_arr = alloca (total_number_of_methods (t)__builtin_alloca(total_number_of_methods (t) * sizeof (struct symbol *)) |
1406 | * sizeof (struct symbol *))__builtin_alloca(total_number_of_methods (t) * sizeof (struct symbol *)); |
1407 | |
1408 | /* Find all methods with a matching name, and put them in |
1409 | sym_arr. */ |
1410 | |
1411 | i1 = collect_methods (copy, t, sym_arr); |
1412 | |
1413 | if (i1 == 1) |
1414 | { |
1415 | /* There is exactly one field with that name. */ |
1416 | sym = sym_arr[0]; |
1417 | |
1418 | if (sym && SYMBOL_CLASS (sym)(sym)->aclass == LOC_BLOCK) |
1419 | { |
1420 | values.sals = (struct symtab_and_line *) |
1421 | xmalloc (sizeof (struct symtab_and_line)); |
1422 | values.nelts = 1; |
1423 | values.sals[0] = find_function_start_sal (sym, |
1424 | funfirstline); |
1425 | } |
1426 | else |
1427 | { |
1428 | values.nelts = 0; |
1429 | } |
1430 | return values; |
1431 | } |
1432 | if (i1 > 0) |
1433 | { |
1434 | /* There is more than one field with that name |
1435 | (overloaded). Ask the user which one to use. */ |
1436 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); |
1437 | } |
1438 | else |
1439 | { |
1440 | char *tmp; |
1441 | |
1442 | if (is_operator_name (copy)) |
1443 | { |
1444 | tmp = (char *) alloca (strlen (copy + 3) + 9)__builtin_alloca(strlen (copy + 3) + 9); |
1445 | strcpy (tmp, "operator "); |
1446 | strcat (tmp, copy + 3); |
1447 | } |
1448 | else |
1449 | tmp = copy; |
1450 | if (tmp[0] == '~') |
1451 | cplusplus_error (saved_arg, |
1452 | "the class `%s' does not have destructor defined\n", |
1453 | SYMBOL_PRINT_NAME (sym_class)(demangle ? (symbol_natural_name (&(sym_class)->ginfo) ) : (sym_class)->ginfo.name)); |
1454 | else |
1455 | cplusplus_error (saved_arg, |
1456 | "the class %s does not have any method named %s\n", |
1457 | SYMBOL_PRINT_NAME (sym_class)(demangle ? (symbol_natural_name (&(sym_class)->ginfo) ) : (sym_class)->ginfo.name), tmp); |
1458 | } |
1459 | } |
1460 | |
1461 | /* Find all methods named COPY in the class whose type is T, and put |
1462 | them in SYM_ARR. Return the number of methods found. */ |
1463 | |
1464 | static int |
1465 | collect_methods (char *copy, struct type *t, |
1466 | struct symbol **sym_arr) |
1467 | { |
1468 | int i1 = 0; /* Counter for the symbol array. */ |
1469 | |
1470 | if (destructor_name_p (copy, t)) |
1471 | { |
1472 | /* Destructors are a special case. */ |
1473 | int m_index, f_index; |
1474 | |
1475 | if (get_destructor_fn_field (t, &m_index, &f_index)) |
1476 | { |
1477 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index)(t)->main_type->type_specific.cplus_stuff->fn_fieldlists [m_index].fn_fields; |
1478 | |
1479 | sym_arr[i1] = |
1480 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index)(f)[f_index].physname, |
1481 | NULL((void*)0), VAR_DOMAIN, (int *) NULL((void*)0), |
1482 | (struct symtab **) NULL((void*)0)); |
1483 | if (sym_arr[i1]) |
1484 | i1++; |
1485 | } |
1486 | } |
1487 | else |
1488 | i1 = find_methods (t, copy, sym_arr); |
1489 | |
1490 | return i1; |
1491 | } |
1492 | |
1493 | |
1494 | |
1495 | /* Return the symtab associated to the filename given by the substring |
1496 | of *ARGPTR ending at P, and advance ARGPTR past that filename. If |
1497 | NOT_FOUND_PTR is not null and the source file is not found, store |
1498 | boolean true at the location pointed to and do not issue an |
1499 | error message. */ |
1500 | |
1501 | static struct symtab * |
1502 | symtab_from_filename (char **argptr, char *p, int is_quote_enclosed, |
1503 | int *not_found_ptr) |
1504 | { |
1505 | char *p1; |
1506 | char *copy; |
1507 | struct symtab *file_symtab; |
1508 | |
1509 | p1 = p; |
1510 | while (p != *argptr && p[-1] == ' ') |
1511 | --p; |
1512 | if ((*p == '"') && is_quote_enclosed) |
1513 | --p; |
1514 | copy = (char *) alloca (p - *argptr + 1)__builtin_alloca(p - *argptr + 1); |
1515 | memcpy (copy, *argptr, p - *argptr); |
1516 | /* It may have the ending quote right after the file name. */ |
1517 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') |
1518 | copy[p - *argptr - 1] = 0; |
1519 | else |
1520 | copy[p - *argptr] = 0; |
1521 | |
1522 | /* Find that file's data. */ |
1523 | file_symtab = lookup_symtab (copy); |
1524 | if (file_symtab == 0) |
1525 | { |
1526 | if (!have_full_symbols () && !have_partial_symbols ()) |
1527 | error ("No symbol table is loaded. Use the \"file\" command."); |
1528 | if (not_found_ptr) |
1529 | { |
1530 | *not_found_ptr = 1; |
1531 | /* The caller has indicated that it wishes quiet notification of any |
1532 | error where the function or file is not found. A call to |
1533 | error_silent causes an error to occur, but it does not issue |
1534 | the supplied message. The message can be manually output by |
1535 | the caller, if desired. This is used, for example, when |
1536 | attempting to set breakpoints for functions in shared libraries |
1537 | that have not yet been loaded. */ |
1538 | error_silent ("No source file named %s.", copy); |
1539 | } |
1540 | error ("No source file named %s.", copy); |
1541 | } |
1542 | |
1543 | /* Discard the file name from the arg. */ |
1544 | p = p1 + 1; |
1545 | while (*p == ' ' || *p == '\t') |
1546 | p++; |
1547 | *argptr = p; |
1548 | |
1549 | return file_symtab; |
1550 | } |
1551 | |
1552 | |
1553 | |
1554 | /* This decodes a line where the argument is all digits (possibly |
1555 | preceded by a sign). Q should point to the end of those digits; |
1556 | the other arguments are as usual. */ |
1557 | |
1558 | static struct symtabs_and_lines |
1559 | decode_all_digits (char **argptr, struct symtab *default_symtab, |
1560 | int default_line, char ***canonical, |
1561 | struct symtab *file_symtab, char *q) |
1562 | |
1563 | { |
1564 | struct symtabs_and_lines values; |
1565 | struct symtab_and_line val; |
1566 | |
1567 | enum sign |
1568 | { |
1569 | none, plus, minus |
1570 | } |
1571 | sign = none; |
1572 | |
1573 | /* We might need a canonical line spec if no file was specified. */ |
1574 | int need_canonical = (file_symtab == 0) ? 1 : 0; |
1575 | |
1576 | init_sal (&val); |
1577 | |
1578 | /* This is where we need to make sure that we have good defaults. |
1579 | We must guarantee that this section of code is never executed |
1580 | when we are called with just a function name, since |
1581 | set_default_source_symtab_and_line uses |
1582 | select_source_symtab that calls us with such an argument. */ |
1583 | |
1584 | if (file_symtab == 0 && default_symtab == 0) |
1585 | { |
1586 | /* Make sure we have at least a default source file. */ |
1587 | set_default_source_symtab_and_line (); |
1588 | initialize_defaults (&default_symtab, &default_line); |
1589 | } |
1590 | |
1591 | if (**argptr == '+') |
1592 | sign = plus, (*argptr)++; |
1593 | else if (**argptr == '-') |
1594 | sign = minus, (*argptr)++; |
1595 | val.line = atoi (*argptr); |
1596 | switch (sign) |
1597 | { |
1598 | case plus: |
1599 | if (q == *argptr) |
1600 | val.line = 5; |
1601 | if (file_symtab == 0) |
1602 | val.line = default_line + val.line; |
1603 | break; |
1604 | case minus: |
1605 | if (q == *argptr) |
1606 | val.line = 15; |
1607 | if (file_symtab == 0) |
1608 | val.line = default_line - val.line; |
1609 | else |
1610 | val.line = 1; |
1611 | break; |
1612 | case none: |
1613 | break; /* No need to adjust val.line. */ |
1614 | } |
1615 | |
1616 | while (*q == ' ' || *q == '\t') |
1617 | q++; |
1618 | *argptr = q; |
1619 | if (file_symtab == 0) |
1620 | file_symtab = default_symtab; |
1621 | |
1622 | /* It is possible that this source file has more than one symtab, |
1623 | and that the new line number specification has moved us from the |
1624 | default (in file_symtab) to a new one. */ |
1625 | val.symtab = find_line_symtab (file_symtab, val.line, NULL((void*)0), NULL((void*)0)); |
1626 | if (val.symtab == 0) |
1627 | val.symtab = file_symtab; |
1628 | |
1629 | val.pc = 0; |
1630 | values.sals = (struct symtab_and_line *) |
1631 | xmalloc (sizeof (struct symtab_and_line)); |
1632 | values.sals[0] = val; |
1633 | values.nelts = 1; |
1634 | if (need_canonical) |
1635 | build_canonical_line_spec (values.sals, NULL((void*)0), canonical); |
1636 | return values; |
1637 | } |
1638 | |
1639 | |
1640 | |
1641 | /* Decode a linespec starting with a dollar sign. */ |
1642 | |
1643 | static struct symtabs_and_lines |
1644 | decode_dollar (char *copy, int funfirstline, struct symtab *default_symtab, |
1645 | char ***canonical, struct symtab *file_symtab) |
1646 | { |
1647 | struct value *valx; |
1648 | int index = 0; |
1649 | int need_canonical = 0; |
1650 | struct symtabs_and_lines values; |
1651 | struct symtab_and_line val; |
1652 | char *p; |
1653 | struct symbol *sym; |
1654 | /* The symtab that SYM was found in. */ |
1655 | struct symtab *sym_symtab; |
1656 | struct minimal_symbol *msymbol; |
1657 | |
1658 | p = (copy[1] == '$') ? copy + 2 : copy + 1; |
1659 | while (*p >= '0' && *p <= '9') |
1660 | p++; |
1661 | if (!*p) /* Reached end of token without hitting non-digit. */ |
1662 | { |
1663 | /* We have a value history reference. */ |
1664 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); |
1665 | valx = access_value_history ((copy[1] == '$') ? -index : index); |
1666 | if (TYPE_CODE (VALUE_TYPE (valx))((valx)->type)->main_type->code != TYPE_CODE_INT) |
1667 | error ("History values used in line specs must have integer values."); |
1668 | } |
1669 | else |
1670 | { |
1671 | /* Not all digits -- may be user variable/function or a |
1672 | convenience variable. */ |
1673 | |
1674 | /* Look up entire name as a symbol first. */ |
1675 | sym = lookup_symbol (copy, 0, VAR_DOMAIN, 0, &sym_symtab); |
1676 | file_symtab = (struct symtab *) 0; |
1677 | need_canonical = 1; |
Value stored to 'need_canonical' is never read | |
1678 | /* Symbol was found --> jump to normal symbol processing. */ |
1679 | if (sym) |
1680 | return symbol_found (funfirstline, canonical, copy, sym, |
1681 | NULL((void*)0), sym_symtab); |
1682 | |
1683 | /* If symbol was not found, look in minimal symbol tables. */ |
1684 | msymbol = lookup_minimal_symbol (copy, NULL((void*)0), NULL((void*)0)); |
1685 | /* Min symbol was found --> jump to minsym processing. */ |
1686 | if (msymbol) |
1687 | return minsym_found (funfirstline, msymbol); |
1688 | |
1689 | /* Not a user variable or function -- must be convenience variable. */ |
1690 | need_canonical = (file_symtab == 0) ? 1 : 0; |
1691 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); |
1692 | if (TYPE_CODE (VALUE_TYPE (valx))((valx)->type)->main_type->code != TYPE_CODE_INT) |
1693 | error ("Convenience variables used in line specs must have integer values."); |
1694 | } |
1695 | |
1696 | init_sal (&val); |
1697 | |
1698 | /* Either history value or convenience value from above, in valx. */ |
1699 | val.symtab = file_symtab ? file_symtab : default_symtab; |
1700 | val.line = value_as_long (valx); |
1701 | val.pc = 0; |
1702 | |
1703 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); |
1704 | values.sals[0] = val; |
1705 | values.nelts = 1; |
1706 | |
1707 | if (need_canonical) |
1708 | build_canonical_line_spec (values.sals, NULL((void*)0), canonical); |
1709 | |
1710 | return values; |
1711 | } |
1712 | |
1713 | |
1714 | |
1715 | /* Decode a linespec that's a variable. If FILE_SYMTAB is non-NULL, |
1716 | look in that symtab's static variables first. If NOT_FOUND_PTR is not NULL and |
1717 | the function cannot be found, store boolean true in the location pointed to |
1718 | and do not issue an error message. */ |
1719 | |
1720 | static struct symtabs_and_lines |
1721 | decode_variable (char *copy, int funfirstline, char ***canonical, |
1722 | struct symtab *file_symtab, int *not_found_ptr) |
1723 | { |
1724 | struct symbol *sym; |
1725 | /* The symtab that SYM was found in. */ |
1726 | struct symtab *sym_symtab; |
1727 | |
1728 | struct minimal_symbol *msymbol; |
1729 | |
1730 | sym = lookup_symbol (copy, |
1731 | (file_symtab |
1732 | ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (file_symtab),((file_symtab)->blockvector)->block[STATIC_BLOCK] |
1733 | STATIC_BLOCK)((file_symtab)->blockvector)->block[STATIC_BLOCK] |
1734 | : get_selected_block (0)), |
1735 | VAR_DOMAIN, 0, &sym_symtab); |
1736 | |
1737 | if (sym != NULL((void*)0)) |
1738 | return symbol_found (funfirstline, canonical, copy, sym, |
1739 | file_symtab, sym_symtab); |
1740 | |
1741 | msymbol = lookup_minimal_symbol (copy, NULL((void*)0), NULL((void*)0)); |
1742 | |
1743 | if (msymbol != NULL((void*)0)) |
1744 | return minsym_found (funfirstline, msymbol); |
1745 | |
1746 | if (!have_full_symbols () && |
1747 | !have_partial_symbols () && !have_minimal_symbols ()) |
1748 | error ("No symbol table is loaded. Use the \"file\" command."); |
1749 | |
1750 | if (not_found_ptr) |
1751 | { |
1752 | *not_found_ptr = 1; |
1753 | /* The caller has indicated that it wishes quiet notification of any |
1754 | error where the function or file is not found. A call to |
1755 | error_silent causes an error to occur, but it does not issue |
1756 | the supplied message. The message can be manually output by |
1757 | the caller, if desired. This is used, for example, when |
1758 | attempting to set breakpoints for functions in shared libraries |
1759 | that have not yet been loaded. */ |
1760 | error_silent ("Function \"%s\" not defined.", copy); |
1761 | } |
1762 | |
1763 | error ("Function \"%s\" not defined.", copy); |
1764 | } |
1765 | |
1766 | |
1767 | |
1768 | |
1769 | /* Now come some functions that are called from multiple places within |
1770 | decode_line_1. */ |
1771 | |
1772 | /* We've found a symbol SYM to associate with our linespec; build a |
1773 | corresponding struct symtabs_and_lines. */ |
1774 | |
1775 | static struct symtabs_and_lines |
1776 | symbol_found (int funfirstline, char ***canonical, char *copy, |
1777 | struct symbol *sym, struct symtab *file_symtab, |
1778 | struct symtab *sym_symtab) |
1779 | { |
1780 | struct symtabs_and_lines values; |
1781 | |
1782 | if (SYMBOL_CLASS (sym)(sym)->aclass == LOC_BLOCK) |
1783 | { |
1784 | /* Arg is the name of a function */ |
1785 | values.sals = (struct symtab_and_line *) |
1786 | xmalloc (sizeof (struct symtab_and_line)); |
1787 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
1788 | values.nelts = 1; |
1789 | |
1790 | /* Don't use the SYMBOL_LINE; if used at all it points to |
1791 | the line containing the parameters or thereabouts, not |
1792 | the first line of code. */ |
1793 | |
1794 | /* We might need a canonical line spec if it is a static |
1795 | function. */ |
1796 | if (file_symtab == 0) |
1797 | { |
1798 | struct blockvector *bv = BLOCKVECTOR (sym_symtab)(sym_symtab)->blockvector; |
1799 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)(bv)->block[STATIC_BLOCK]; |
1800 | if (lookup_block_symbol (b, copy, NULL((void*)0), VAR_DOMAIN) != NULL((void*)0)) |
1801 | build_canonical_line_spec (values.sals, copy, canonical); |
1802 | } |
1803 | return values; |
1804 | } |
1805 | else |
1806 | { |
1807 | if (funfirstline) |
1808 | error ("\"%s\" is not a function", copy); |
1809 | else if (SYMBOL_LINE (sym)(sym)->line != 0) |
1810 | { |
1811 | /* We know its line number. */ |
1812 | values.sals = (struct symtab_and_line *) |
1813 | xmalloc (sizeof (struct symtab_and_line)); |
1814 | values.nelts = 1; |
1815 | memset (&values.sals[0], 0, sizeof (values.sals[0])); |
1816 | values.sals[0].symtab = sym_symtab; |
1817 | values.sals[0].line = SYMBOL_LINE (sym)(sym)->line; |
1818 | return values; |
1819 | } |
1820 | else |
1821 | /* This can happen if it is compiled with a compiler which doesn't |
1822 | put out line numbers for variables. */ |
1823 | /* FIXME: Shouldn't we just set .line and .symtab to zero |
1824 | and return? For example, "info line foo" could print |
1825 | the address. */ |
1826 | error ("Line number not known for symbol \"%s\"", copy); |
1827 | } |
1828 | } |
1829 | |
1830 | /* We've found a minimal symbol MSYMBOL to associate with our |
1831 | linespec; build a corresponding struct symtabs_and_lines. */ |
1832 | |
1833 | static struct symtabs_and_lines |
1834 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) |
1835 | { |
1836 | struct symtabs_and_lines values; |
1837 | |
1838 | values.sals = (struct symtab_and_line *) |
1839 | xmalloc (sizeof (struct symtab_and_line)); |
1840 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol)(msymbol)->ginfo.value.address, |
1841 | (struct bfd_section *) 0, 0); |
1842 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol)(msymbol)->ginfo.bfd_section; |
1843 | if (funfirstline) |
1844 | { |
1845 | values.sals[0].pc += DEPRECATED_FUNCTION_START_OFFSET(gdbarch_deprecated_function_start_offset (current_gdbarch)); |
1846 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc)(gdbarch_skip_prologue (current_gdbarch, values.sals[0].pc)); |
1847 | } |
1848 | values.nelts = 1; |
1849 | return values; |
1850 | } |