File: | src/gnu/usr.bin/binutils/gdb/linespec.c |
Warning: | line 1140, column 24 Dereference of null pointer |
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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
| |||
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; | |||
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 | } |