Commit | Line | Data |
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50641945 | 1 | /* Parser for linespec for the GNU debugger, GDB. |
b6ba6518 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
77cd5909 | 3 | 1996, 1997, 1998, 1999, 2000, 2001 |
50641945 FN |
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" | |
c5f0f3d0 FN |
25 | #include "frame.h" |
26 | #include "command.h" | |
50641945 FN |
27 | #include "symfile.h" |
28 | #include "objfiles.h" | |
0378c332 | 29 | #include "source.h" |
50641945 | 30 | #include "demangle.h" |
c5f0f3d0 FN |
31 | #include "value.h" |
32 | #include "completer.h" | |
015a42b4 | 33 | #include "cp-abi.h" |
c38da1af | 34 | #include "parser-defs.h" |
50641945 FN |
35 | |
36 | /* We share this one with symtab.c, but it is not exported widely. */ | |
37 | ||
38 | extern char *operator_chars (char *, char **); | |
39 | ||
50641945 FN |
40 | /* Prototypes for local functions */ |
41 | ||
255e7dbf | 42 | static void cplusplus_error (const char *name, const char *fmt, ...) ATTR_FORMAT (printf, 2, 3); |
50641945 FN |
43 | |
44 | static int total_number_of_methods (struct type *type); | |
45 | ||
46 | static int find_methods (struct type *, char *, struct symbol **); | |
47 | ||
48 | static void build_canonical_line_spec (struct symtab_and_line *, | |
49 | char *, char ***); | |
50 | ||
51 | static char *find_toplevel_char (char *s, char c); | |
52 | ||
53 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], | |
54 | int, int, char ***); | |
55 | ||
413dad4d DC |
56 | static struct |
57 | symtabs_and_lines symbol_found (int funfirstline, | |
58 | char ***canonical, | |
59 | char *copy, | |
60 | struct symbol *sym, | |
61 | struct symtab *s, | |
62 | struct symtab *sym_symtab); | |
63 | ||
64 | static struct | |
65 | symtabs_and_lines minsym_found (int funfirstline, | |
66 | struct minimal_symbol *msymbol); | |
67 | ||
50641945 FN |
68 | /* Helper functions. */ |
69 | ||
255e7dbf AC |
70 | /* Issue a helpful hint on using the command completion feature on |
71 | single quoted demangled C++ symbols as part of the completion | |
72 | error. */ | |
50641945 FN |
73 | |
74 | static void | |
255e7dbf | 75 | cplusplus_error (const char *name, const char *fmt, ...) |
50641945 | 76 | { |
255e7dbf AC |
77 | struct ui_file *tmp_stream; |
78 | tmp_stream = mem_fileopen (); | |
79 | make_cleanup_ui_file_delete (tmp_stream); | |
80 | ||
81 | { | |
82 | va_list args; | |
83 | va_start (args, fmt); | |
84 | vfprintf_unfiltered (tmp_stream, fmt, args); | |
85 | va_end (args); | |
86 | } | |
87 | ||
50641945 FN |
88 | while (*name == '\'') |
89 | name++; | |
255e7dbf AC |
90 | fprintf_unfiltered (tmp_stream, |
91 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" | |
92 | "(Note leading single quote.)"), | |
93 | name, name); | |
94 | error_stream (tmp_stream); | |
50641945 FN |
95 | } |
96 | ||
97 | /* Return the number of methods described for TYPE, including the | |
98 | methods from types it derives from. This can't be done in the symbol | |
99 | reader because the type of the baseclass might still be stubbed | |
100 | when the definition of the derived class is parsed. */ | |
101 | ||
102 | static int | |
103 | total_number_of_methods (struct type *type) | |
104 | { | |
105 | int n; | |
106 | int count; | |
107 | ||
108 | CHECK_TYPEDEF (type); | |
109 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
110 | return 0; | |
111 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
112 | ||
113 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
114 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
115 | ||
116 | return count; | |
117 | } | |
118 | ||
119 | /* Recursive helper function for decode_line_1. | |
120 | Look for methods named NAME in type T. | |
121 | Return number of matches. | |
122 | Put matches in SYM_ARR, which should have been allocated with | |
123 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
124 | Note that this function is g++ specific. */ | |
125 | ||
126 | static int | |
127 | find_methods (struct type *t, char *name, struct symbol **sym_arr) | |
128 | { | |
129 | int i1 = 0; | |
130 | int ibase; | |
50641945 FN |
131 | char *class_name = type_name_no_tag (t); |
132 | ||
133 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
134 | unless we figure out how to get the physname without the name of | |
135 | the class, then the loop can't do any good. */ | |
136 | if (class_name | |
8bd1f2c6 JB |
137 | && (lookup_symbol (class_name, (struct block *) NULL, |
138 | STRUCT_NAMESPACE, (int *) NULL, | |
139 | (struct symtab **) NULL))) | |
50641945 FN |
140 | { |
141 | int method_counter; | |
5c717440 | 142 | int name_len = strlen (name); |
50641945 | 143 | |
8bd1f2c6 | 144 | CHECK_TYPEDEF (t); |
50641945 FN |
145 | |
146 | /* Loop over each method name. At this level, all overloads of a name | |
147 | are counted as a single name. There is an inner loop which loops over | |
148 | each overload. */ | |
149 | ||
150 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
151 | method_counter >= 0; | |
152 | --method_counter) | |
153 | { | |
154 | int field_counter; | |
155 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); | |
156 | char dem_opname[64]; | |
157 | ||
158 | if (strncmp (method_name, "__", 2) == 0 || | |
159 | strncmp (method_name, "op", 2) == 0 || | |
160 | strncmp (method_name, "type", 4) == 0) | |
161 | { | |
162 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
163 | method_name = dem_opname; | |
164 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
165 | method_name = dem_opname; | |
166 | } | |
167 | ||
13b57657 | 168 | if (strcmp_iw (name, method_name) == 0) |
50641945 FN |
169 | /* Find all the overloaded methods with that name. */ |
170 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
171 | field_counter >= 0; | |
172 | --field_counter) | |
173 | { | |
174 | struct fn_field *f; | |
175 | char *phys_name; | |
176 | ||
177 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
178 | ||
179 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
180 | { | |
181 | char *tmp_name; | |
182 | ||
183 | tmp_name = gdb_mangle_name (t, | |
184 | method_counter, | |
185 | field_counter); | |
186 | phys_name = alloca (strlen (tmp_name) + 1); | |
187 | strcpy (phys_name, tmp_name); | |
b8c9b27d | 188 | xfree (tmp_name); |
50641945 FN |
189 | } |
190 | else | |
191 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
8bd1f2c6 | 192 | |
50641945 | 193 | /* Destructor is handled by caller, dont add it to the list */ |
015a42b4 | 194 | if (is_destructor_name (phys_name) != 0) |
50641945 FN |
195 | continue; |
196 | ||
197 | sym_arr[i1] = lookup_symbol (phys_name, | |
198 | NULL, VAR_NAMESPACE, | |
199 | (int *) NULL, | |
200 | (struct symtab **) NULL); | |
201 | if (sym_arr[i1]) | |
202 | i1++; | |
203 | else | |
204 | { | |
205 | /* This error message gets printed, but the method | |
206 | still seems to be found | |
207 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
208 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
209 | language_cplus, | |
210 | DMGL_PARAMS | DMGL_ANSI); | |
211 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
212 | */ | |
213 | } | |
214 | } | |
5c717440 DJ |
215 | else if (strncmp (class_name, name, name_len) == 0 |
216 | && (class_name[name_len] == '\0' | |
217 | || class_name[name_len] == '<')) | |
003d6d1d DJ |
218 | { |
219 | /* For GCC 3.x and stabs, constructors and destructors have names | |
220 | like __base_ctor and __complete_dtor. Check the physname for now | |
221 | if we're looking for a constructor. */ | |
222 | for (field_counter | |
223 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
224 | field_counter >= 0; | |
225 | --field_counter) | |
226 | { | |
227 | struct fn_field *f; | |
228 | char *phys_name; | |
229 | ||
230 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
231 | ||
232 | /* GCC 3.x will never produce stabs stub methods, so we don't need | |
233 | to handle this case. */ | |
234 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
235 | continue; | |
236 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
237 | if (! is_constructor_name (phys_name)) | |
238 | continue; | |
239 | ||
240 | /* If this method is actually defined, include it in the | |
241 | list. */ | |
242 | sym_arr[i1] = lookup_symbol (phys_name, | |
243 | NULL, VAR_NAMESPACE, | |
244 | (int *) NULL, | |
245 | (struct symtab **) NULL); | |
246 | if (sym_arr[i1]) | |
247 | i1++; | |
248 | } | |
249 | } | |
50641945 FN |
250 | } |
251 | } | |
252 | ||
253 | /* Only search baseclasses if there is no match yet, since names in | |
254 | derived classes override those in baseclasses. | |
255 | ||
256 | FIXME: The above is not true; it is only true of member functions | |
257 | if they have the same number of arguments (??? - section 13.1 of the | |
258 | ARM says the function members are not in the same scope but doesn't | |
259 | really spell out the rules in a way I understand. In any case, if | |
260 | the number of arguments differ this is a case in which we can overload | |
261 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
262 | rather than hiding in this case). */ | |
263 | ||
264 | if (i1 == 0) | |
265 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
266 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); | |
267 | ||
268 | return i1; | |
269 | } | |
270 | ||
271 | /* Helper function for decode_line_1. | |
272 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
273 | the SAL has a symtab. | |
274 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
275 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
276 | line spec is `filename:linenum'. */ | |
277 | ||
278 | static void | |
279 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
280 | char ***canonical) | |
281 | { | |
282 | char **canonical_arr; | |
283 | char *canonical_name; | |
284 | char *filename; | |
285 | struct symtab *s = sal->symtab; | |
286 | ||
287 | if (s == (struct symtab *) NULL | |
288 | || s->filename == (char *) NULL | |
289 | || canonical == (char ***) NULL) | |
290 | return; | |
291 | ||
292 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
293 | *canonical = canonical_arr; | |
294 | ||
295 | filename = s->filename; | |
296 | if (symname != NULL) | |
297 | { | |
298 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
299 | sprintf (canonical_name, "%s:%s", filename, symname); | |
300 | } | |
301 | else | |
302 | { | |
303 | canonical_name = xmalloc (strlen (filename) + 30); | |
304 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
305 | } | |
306 | canonical_arr[0] = canonical_name; | |
307 | } | |
308 | ||
309 | ||
310 | ||
311 | /* Find an instance of the character C in the string S that is outside | |
312 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
8120c9d5 EZ |
313 | strings. Also, ignore the char within a template name, like a ',' |
314 | within foo<int, int>. */ | |
315 | ||
50641945 FN |
316 | static char * |
317 | find_toplevel_char (char *s, char c) | |
318 | { | |
319 | int quoted = 0; /* zero if we're not in quotes; | |
320 | '"' if we're in a double-quoted string; | |
321 | '\'' if we're in a single-quoted string. */ | |
322 | int depth = 0; /* number of unclosed parens we've seen */ | |
323 | char *scan; | |
324 | ||
325 | for (scan = s; *scan; scan++) | |
326 | { | |
327 | if (quoted) | |
328 | { | |
329 | if (*scan == quoted) | |
330 | quoted = 0; | |
331 | else if (*scan == '\\' && *(scan + 1)) | |
332 | scan++; | |
333 | } | |
334 | else if (*scan == c && ! quoted && depth == 0) | |
335 | return scan; | |
336 | else if (*scan == '"' || *scan == '\'') | |
337 | quoted = *scan; | |
8120c9d5 | 338 | else if (*scan == '(' || *scan == '<') |
50641945 | 339 | depth++; |
8120c9d5 | 340 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
50641945 FN |
341 | depth--; |
342 | } | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to | |
348 | operate on (ask user if necessary). | |
349 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
350 | as canonical line specs there. */ | |
351 | ||
352 | static struct symtabs_and_lines | |
353 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
354 | char ***canonical) | |
355 | { | |
356 | struct symtabs_and_lines values, return_values; | |
357 | char *args, *arg1; | |
358 | int i; | |
359 | char *prompt; | |
360 | char *symname; | |
361 | struct cleanup *old_chain; | |
362 | char **canonical_arr = (char **) NULL; | |
363 | ||
364 | values.sals = (struct symtab_and_line *) | |
365 | alloca (nelts * sizeof (struct symtab_and_line)); | |
366 | return_values.sals = (struct symtab_and_line *) | |
367 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 368 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
369 | |
370 | if (canonical) | |
371 | { | |
372 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 373 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
374 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
375 | *canonical = canonical_arr; | |
376 | } | |
377 | ||
378 | i = 0; | |
379 | printf_unfiltered ("[0] cancel\n[1] all\n"); | |
380 | while (i < nelts) | |
381 | { | |
fe39c653 EZ |
382 | init_sal (&return_values.sals[i]); /* initialize to zeroes */ |
383 | init_sal (&values.sals[i]); | |
50641945 FN |
384 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) |
385 | { | |
386 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); | |
387 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
388 | (i + 2), | |
389 | SYMBOL_SOURCE_NAME (sym_arr[i]), | |
390 | values.sals[i].symtab->filename, | |
391 | values.sals[i].line); | |
392 | } | |
393 | else | |
394 | printf_unfiltered ("?HERE\n"); | |
395 | i++; | |
396 | } | |
397 | ||
398 | if ((prompt = getenv ("PS2")) == NULL) | |
399 | { | |
400 | prompt = "> "; | |
401 | } | |
402 | args = command_line_input (prompt, 0, "overload-choice"); | |
403 | ||
404 | if (args == 0 || *args == 0) | |
405 | error_no_arg ("one or more choice numbers"); | |
406 | ||
407 | i = 0; | |
408 | while (*args) | |
409 | { | |
410 | int num; | |
411 | ||
412 | arg1 = args; | |
413 | while (*arg1 >= '0' && *arg1 <= '9') | |
414 | arg1++; | |
415 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
416 | error ("Arguments must be choice numbers."); | |
417 | ||
418 | num = atoi (args); | |
419 | ||
420 | if (num == 0) | |
421 | error ("canceled"); | |
422 | else if (num == 1) | |
423 | { | |
424 | if (canonical_arr) | |
425 | { | |
426 | for (i = 0; i < nelts; i++) | |
427 | { | |
428 | if (canonical_arr[i] == NULL) | |
429 | { | |
430 | symname = SYMBOL_NAME (sym_arr[i]); | |
431 | canonical_arr[i] = savestring (symname, strlen (symname)); | |
432 | } | |
433 | } | |
434 | } | |
435 | memcpy (return_values.sals, values.sals, | |
436 | (nelts * sizeof (struct symtab_and_line))); | |
437 | return_values.nelts = nelts; | |
438 | discard_cleanups (old_chain); | |
439 | return return_values; | |
440 | } | |
441 | ||
442 | if (num >= nelts + 2) | |
443 | { | |
444 | printf_unfiltered ("No choice number %d.\n", num); | |
445 | } | |
446 | else | |
447 | { | |
448 | num -= 2; | |
449 | if (values.sals[num].pc) | |
450 | { | |
451 | if (canonical_arr) | |
452 | { | |
453 | symname = SYMBOL_NAME (sym_arr[num]); | |
b8c9b27d | 454 | make_cleanup (xfree, symname); |
50641945 FN |
455 | canonical_arr[i] = savestring (symname, strlen (symname)); |
456 | } | |
457 | return_values.sals[i++] = values.sals[num]; | |
458 | values.sals[num].pc = 0; | |
459 | } | |
460 | else | |
461 | { | |
462 | printf_unfiltered ("duplicate request for %d ignored.\n", num); | |
463 | } | |
464 | } | |
465 | ||
466 | args = arg1; | |
467 | while (*args == ' ' || *args == '\t') | |
468 | args++; | |
469 | } | |
470 | return_values.nelts = i; | |
471 | discard_cleanups (old_chain); | |
472 | return return_values; | |
473 | } | |
474 | \f | |
475 | /* The parser of linespec itself. */ | |
476 | ||
477 | /* Parse a string that specifies a line number. | |
478 | Pass the address of a char * variable; that variable will be | |
479 | advanced over the characters actually parsed. | |
480 | ||
481 | The string can be: | |
482 | ||
483 | LINENUM -- that line number in current file. PC returned is 0. | |
484 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
485 | FUNCTION -- line number of openbrace of that function. | |
486 | PC returned is the start of the function. | |
487 | VARIABLE -- line number of definition of that variable. | |
488 | PC returned is 0. | |
489 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
490 | *EXPR -- line in which address EXPR appears. | |
491 | ||
492 | This may all be followed by an "if EXPR", which we ignore. | |
493 | ||
494 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
495 | ||
496 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
497 | of real code inside a function when a function is specified, and it is | |
498 | not OK to specify a variable or type to get its line number. | |
499 | ||
500 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
501 | It defaults to current_source_symtab. | |
502 | DEFAULT_LINE specifies the line number to use for relative | |
503 | line numbers (that start with signs). Defaults to current_source_line. | |
504 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
505 | line specs there if necessary. Currently overloaded member functions and | |
506 | line numbers or static functions without a filename yield a canonical | |
507 | line spec. The array and the line spec strings are allocated on the heap, | |
508 | it is the callers responsibility to free them. | |
509 | ||
510 | Note that it is possible to return zero for the symtab | |
511 | if no file is validly specified. Callers must check that. | |
512 | Also, the line number returned may be invalid. */ | |
513 | ||
514 | /* We allow single quotes in various places. This is a hideous | |
515 | kludge, which exists because the completer can't yet deal with the | |
516 | lack of single quotes. FIXME: write a linespec_completer which we | |
517 | can use as appropriate instead of make_symbol_completion_list. */ | |
518 | ||
519 | struct symtabs_and_lines | |
520 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
521 | int default_line, char ***canonical) | |
522 | { | |
523 | struct symtabs_and_lines values; | |
50641945 | 524 | struct symtab_and_line val; |
50641945 FN |
525 | register char *p, *p1; |
526 | char *q, *pp, *ii, *p2; | |
527 | #if 0 | |
528 | char *q1; | |
529 | #endif | |
530 | register struct symtab *s; | |
531 | ||
532 | register struct symbol *sym; | |
533 | /* The symtab that SYM was found in. */ | |
534 | struct symtab *sym_symtab; | |
535 | ||
536 | register CORE_ADDR pc; | |
537 | register struct minimal_symbol *msymbol; | |
538 | char *copy; | |
539 | struct symbol *sym_class; | |
540 | int i1; | |
541 | int is_quoted; | |
542 | int is_quote_enclosed; | |
543 | int has_parens; | |
544 | int has_if = 0; | |
545 | int has_comma = 0; | |
546 | struct symbol **sym_arr; | |
547 | struct type *t; | |
548 | char *saved_arg = *argptr; | |
549 | extern char *gdb_completer_quote_characters; | |
550 | ||
fe39c653 | 551 | init_sal (&val); /* initialize to zeroes */ |
50641945 FN |
552 | |
553 | /* Defaults have defaults. */ | |
554 | ||
555 | if (default_symtab == 0) | |
556 | { | |
0378c332 FN |
557 | /* Use whatever we have for the default source line. We don't use |
558 | get_current_or_default_symtab_and_line as it can recurse and call | |
559 | us back! */ | |
560 | struct symtab_and_line cursal = | |
561 | get_current_source_symtab_and_line (); | |
562 | ||
563 | default_symtab = cursal.symtab; | |
564 | default_line = cursal.line; | |
50641945 FN |
565 | } |
566 | ||
567 | /* See if arg is *PC */ | |
568 | ||
569 | if (**argptr == '*') | |
570 | { | |
571 | (*argptr)++; | |
572 | pc = parse_and_eval_address_1 (argptr); | |
573 | ||
574 | values.sals = (struct symtab_and_line *) | |
575 | xmalloc (sizeof (struct symtab_and_line)); | |
576 | ||
577 | values.nelts = 1; | |
578 | values.sals[0] = find_pc_line (pc, 0); | |
579 | values.sals[0].pc = pc; | |
580 | values.sals[0].section = find_pc_overlay (pc); | |
581 | ||
582 | return values; | |
583 | } | |
584 | ||
585 | /* 'has_if' is for the syntax: | |
586 | * (gdb) break foo if (a==b) | |
587 | */ | |
588 | if ((ii = strstr (*argptr, " if ")) != NULL || | |
589 | (ii = strstr (*argptr, "\tif ")) != NULL || | |
590 | (ii = strstr (*argptr, " if\t")) != NULL || | |
591 | (ii = strstr (*argptr, "\tif\t")) != NULL || | |
592 | (ii = strstr (*argptr, " if(")) != NULL || | |
593 | (ii = strstr (*argptr, "\tif( ")) != NULL) | |
594 | has_if = 1; | |
595 | /* Temporarily zap out "if (condition)" to not | |
596 | * confuse the parenthesis-checking code below. | |
597 | * This is undone below. Do not change ii!! | |
598 | */ | |
599 | if (has_if) | |
600 | { | |
601 | *ii = '\0'; | |
602 | } | |
603 | ||
604 | /* Set various flags. | |
605 | * 'has_parens' is important for overload checking, where | |
606 | * we allow things like: | |
607 | * (gdb) break c::f(int) | |
608 | */ | |
609 | ||
610 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
611 | ||
612 | is_quoted = (**argptr | |
c5f0f3d0 FN |
613 | && strchr (get_gdb_completer_quote_characters (), |
614 | **argptr) != NULL); | |
50641945 FN |
615 | |
616 | has_parens = ((pp = strchr (*argptr, '(')) != NULL | |
617 | && (pp = strrchr (pp, ')')) != NULL); | |
618 | ||
619 | /* Now that we're safely past the has_parens check, | |
620 | * put back " if (condition)" so outer layers can see it | |
621 | */ | |
622 | if (has_if) | |
623 | *ii = ' '; | |
624 | ||
625 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
626 | and we must isolate the first half. Outer layers will call again later | |
627 | for the second half. | |
628 | ||
629 | Don't count commas that appear in argument lists of overloaded | |
630 | functions, or in quoted strings. It's stupid to go to this much | |
631 | trouble when the rest of the function is such an obvious roach hotel. */ | |
632 | ii = find_toplevel_char (*argptr, ','); | |
633 | has_comma = (ii != 0); | |
634 | ||
635 | /* Temporarily zap out second half to not | |
636 | * confuse the code below. | |
637 | * This is undone below. Do not change ii!! | |
638 | */ | |
639 | if (has_comma) | |
640 | { | |
641 | *ii = '\0'; | |
642 | } | |
643 | ||
644 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
645 | /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ | |
646 | /* Look for ':', but ignore inside of <> */ | |
647 | ||
648 | s = NULL; | |
649 | p = *argptr; | |
77cd5909 | 650 | if (p[0] == '"') |
50641945 FN |
651 | { |
652 | is_quote_enclosed = 1; | |
91c1720e | 653 | (*argptr)++; |
77cd5909 | 654 | p++; |
50641945 FN |
655 | } |
656 | else | |
657 | is_quote_enclosed = 0; | |
658 | for (; *p; p++) | |
659 | { | |
660 | if (p[0] == '<') | |
661 | { | |
662 | char *temp_end = find_template_name_end (p); | |
663 | if (!temp_end) | |
664 | error ("malformed template specification in command"); | |
665 | p = temp_end; | |
666 | } | |
667 | /* Check for the end of the first half of the linespec. End of line, | |
668 | a tab, a double colon or the last single colon, or a space. But | |
669 | if enclosed in double quotes we do not break on enclosed spaces */ | |
670 | if (!*p | |
671 | || p[0] == '\t' | |
672 | || ((p[0] == ':') | |
673 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
674 | || ((p[0] == ' ') && !is_quote_enclosed)) | |
675 | break; | |
676 | if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */ | |
677 | { | |
678 | /* Find the *last* '.', since the others are package qualifiers. */ | |
679 | for (p1 = p; *p1; p1++) | |
680 | { | |
681 | if (*p1 == '.') | |
682 | p = p1; | |
683 | } | |
684 | break; | |
685 | } | |
686 | } | |
687 | while (p[0] == ' ' || p[0] == '\t') | |
688 | p++; | |
689 | ||
690 | /* if the closing double quote was left at the end, remove it */ | |
691 | if (is_quote_enclosed) | |
692 | { | |
77cd5909 | 693 | char *closing_quote = strchr (p - 1, '"'); |
50641945 FN |
694 | if (closing_quote && closing_quote[1] == '\0') |
695 | *closing_quote = '\0'; | |
696 | } | |
697 | ||
698 | /* Now that we've safely parsed the first half, | |
699 | * put back ',' so outer layers can see it | |
700 | */ | |
701 | if (has_comma) | |
702 | *ii = ','; | |
703 | ||
704 | if ((p[0] == ':' || p[0] == '.') && !has_parens) | |
705 | { | |
706 | /* C++ */ | |
707 | /* ... or Java */ | |
708 | if (is_quoted) | |
709 | *argptr = *argptr + 1; | |
710 | if (p[0] == '.' || p[1] == ':') | |
711 | { | |
712 | char *saved_arg2 = *argptr; | |
713 | char *temp_end; | |
714 | /* First check for "global" namespace specification, | |
715 | of the form "::foo". If found, skip over the colons | |
716 | and jump to normal symbol processing */ | |
717 | if (p[0] == ':' | |
718 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
719 | saved_arg2 += 2; | |
720 | ||
721 | /* We have what looks like a class or namespace | |
722 | scope specification (A::B), possibly with many | |
723 | levels of namespaces or classes (A::B::C::D). | |
724 | ||
725 | Some versions of the HP ANSI C++ compiler (as also possibly | |
726 | other compilers) generate class/function/member names with | |
727 | embedded double-colons if they are inside namespaces. To | |
728 | handle this, we loop a few times, considering larger and | |
729 | larger prefixes of the string as though they were single | |
730 | symbols. So, if the initially supplied string is | |
731 | A::B::C::D::foo, we have to look up "A", then "A::B", | |
732 | then "A::B::C", then "A::B::C::D", and finally | |
733 | "A::B::C::D::foo" as single, monolithic symbols, because | |
734 | A, B, C or D may be namespaces. | |
735 | ||
736 | Note that namespaces can nest only inside other | |
737 | namespaces, and not inside classes. So we need only | |
738 | consider *prefixes* of the string; there is no need to look up | |
739 | "B::C" separately as a symbol in the previous example. */ | |
740 | ||
741 | p2 = p; /* save for restart */ | |
742 | while (1) | |
743 | { | |
744 | /* Extract the class name. */ | |
745 | p1 = p; | |
746 | while (p != *argptr && p[-1] == ' ') | |
747 | --p; | |
748 | copy = (char *) alloca (p - *argptr + 1); | |
749 | memcpy (copy, *argptr, p - *argptr); | |
750 | copy[p - *argptr] = 0; | |
751 | ||
752 | /* Discard the class name from the arg. */ | |
753 | p = p1 + (p1[0] == ':' ? 2 : 1); | |
754 | while (*p == ' ' || *p == '\t') | |
755 | p++; | |
756 | *argptr = p; | |
757 | ||
758 | sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, | |
759 | (struct symtab **) NULL); | |
760 | ||
761 | if (sym_class && | |
762 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
763 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
764 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
765 | { | |
766 | /* Arg token is not digits => try it as a function name | |
767 | Find the next token(everything up to end or next blank). */ | |
768 | if (**argptr | |
c5f0f3d0 FN |
769 | && strchr (get_gdb_completer_quote_characters (), |
770 | **argptr) != NULL) | |
50641945 FN |
771 | { |
772 | p = skip_quoted (*argptr); | |
773 | *argptr = *argptr + 1; | |
774 | } | |
775 | else | |
776 | { | |
777 | p = *argptr; | |
778 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
779 | p++; | |
780 | } | |
781 | /* | |
782 | q = operator_chars (*argptr, &q1); | |
783 | if (q1 - q) | |
784 | { | |
785 | char *opname; | |
786 | char *tmp = alloca (q1 - q + 1); | |
787 | memcpy (tmp, q, q1 - q); | |
788 | tmp[q1 - q] = '\0'; | |
789 | opname = cplus_mangle_opname (tmp, DMGL_ANSI); | |
790 | if (opname == NULL) | |
791 | { | |
255e7dbf | 792 | cplusplus_error (saved_arg, "no mangling for \"%s\"\n", tmp); |
50641945 FN |
793 | } |
794 | copy = (char*) alloca (3 + strlen(opname)); | |
795 | sprintf (copy, "__%s", opname); | |
796 | p = q1; | |
797 | } | |
798 | else | |
799 | */ | |
800 | { | |
801 | copy = (char *) alloca (p - *argptr + 1); | |
802 | memcpy (copy, *argptr, p - *argptr); | |
803 | copy[p - *argptr] = '\0'; | |
804 | if (p != *argptr | |
805 | && copy[p - *argptr - 1] | |
c5f0f3d0 | 806 | && strchr (get_gdb_completer_quote_characters (), |
50641945 FN |
807 | copy[p - *argptr - 1]) != NULL) |
808 | copy[p - *argptr - 1] = '\0'; | |
809 | } | |
810 | ||
811 | /* no line number may be specified */ | |
812 | while (*p == ' ' || *p == '\t') | |
813 | p++; | |
814 | *argptr = p; | |
815 | ||
816 | sym = 0; | |
817 | i1 = 0; /* counter for the symbol array */ | |
818 | sym_arr = (struct symbol **) alloca (total_number_of_methods (t) | |
819 | * sizeof (struct symbol *)); | |
820 | ||
821 | if (destructor_name_p (copy, t)) | |
822 | { | |
823 | /* Destructors are a special case. */ | |
824 | int m_index, f_index; | |
825 | ||
826 | if (get_destructor_fn_field (t, &m_index, &f_index)) | |
827 | { | |
828 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); | |
829 | ||
830 | sym_arr[i1] = | |
831 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), | |
832 | NULL, VAR_NAMESPACE, (int *) NULL, | |
833 | (struct symtab **) NULL); | |
834 | if (sym_arr[i1]) | |
835 | i1++; | |
836 | } | |
837 | } | |
838 | else | |
839 | i1 = find_methods (t, copy, sym_arr); | |
840 | if (i1 == 1) | |
841 | { | |
842 | /* There is exactly one field with that name. */ | |
843 | sym = sym_arr[0]; | |
844 | ||
845 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
846 | { | |
847 | values.sals = (struct symtab_and_line *) | |
848 | xmalloc (sizeof (struct symtab_and_line)); | |
849 | values.nelts = 1; | |
850 | values.sals[0] = find_function_start_sal (sym, | |
851 | funfirstline); | |
852 | } | |
853 | else | |
854 | { | |
855 | values.nelts = 0; | |
856 | } | |
857 | return values; | |
858 | } | |
859 | if (i1 > 0) | |
860 | { | |
861 | /* There is more than one field with that name | |
862 | (overloaded). Ask the user which one to use. */ | |
863 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
864 | } | |
865 | else | |
866 | { | |
867 | char *tmp; | |
868 | ||
015a42b4 | 869 | if (is_operator_name (copy)) |
50641945 FN |
870 | { |
871 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
872 | strcpy (tmp, "operator "); | |
873 | strcat (tmp, copy + 3); | |
874 | } | |
875 | else | |
876 | tmp = copy; | |
50641945 | 877 | if (tmp[0] == '~') |
255e7dbf AC |
878 | cplusplus_error (saved_arg, |
879 | "the class `%s' does not have destructor defined\n", | |
880 | SYMBOL_SOURCE_NAME (sym_class)); | |
50641945 | 881 | else |
255e7dbf AC |
882 | cplusplus_error (saved_arg, |
883 | "the class %s does not have any method named %s\n", | |
884 | SYMBOL_SOURCE_NAME (sym_class), tmp); | |
50641945 FN |
885 | } |
886 | } | |
887 | ||
888 | /* Move pointer up to next possible class/namespace token */ | |
889 | p = p2 + 1; /* restart with old value +1 */ | |
890 | /* Move pointer ahead to next double-colon */ | |
891 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) | |
892 | { | |
893 | if (p[0] == '<') | |
894 | { | |
895 | temp_end = find_template_name_end (p); | |
896 | if (!temp_end) | |
897 | error ("malformed template specification in command"); | |
898 | p = temp_end; | |
899 | } | |
900 | else if ((p[0] == ':') && (p[1] == ':')) | |
901 | break; /* found double-colon */ | |
902 | else | |
903 | p++; | |
904 | } | |
905 | ||
906 | if (*p != ':') | |
907 | break; /* out of the while (1) */ | |
908 | ||
909 | p2 = p; /* save restart for next time around */ | |
910 | *argptr = saved_arg2; /* restore argptr */ | |
911 | } /* while (1) */ | |
912 | ||
913 | /* Last chance attempt -- check entire name as a symbol */ | |
914 | /* Use "copy" in preparation for jumping out of this block, | |
915 | to be consistent with usage following the jump target */ | |
916 | copy = (char *) alloca (p - saved_arg2 + 1); | |
917 | memcpy (copy, saved_arg2, p - saved_arg2); | |
918 | /* Note: if is_quoted should be true, we snuff out quote here anyway */ | |
919 | copy[p - saved_arg2] = '\000'; | |
920 | /* Set argptr to skip over the name */ | |
921 | *argptr = (*p == '\'') ? p + 1 : p; | |
922 | /* Look up entire name */ | |
923 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
924 | s = (struct symtab *) 0; | |
50641945 | 925 | if (sym) |
413dad4d DC |
926 | return symbol_found (funfirstline, canonical, copy, sym, |
927 | NULL, sym_symtab); | |
50641945 FN |
928 | |
929 | /* Couldn't find any interpretation as classes/namespaces, so give up */ | |
50641945 | 930 | /* The quotes are important if copy is empty. */ |
255e7dbf AC |
931 | cplusplus_error (saved_arg, |
932 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", | |
933 | copy); | |
50641945 FN |
934 | } |
935 | /* end of C++ */ | |
936 | ||
937 | ||
938 | /* Extract the file name. */ | |
939 | p1 = p; | |
940 | while (p != *argptr && p[-1] == ' ') | |
941 | --p; | |
942 | if ((*p == '"') && is_quote_enclosed) | |
943 | --p; | |
944 | copy = (char *) alloca (p - *argptr + 1); | |
2654e6d4 DJ |
945 | memcpy (copy, *argptr, p - *argptr); |
946 | /* It may have the ending quote right after the file name */ | |
947 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') | |
948 | copy[p - *argptr - 1] = 0; | |
50641945 | 949 | else |
2654e6d4 | 950 | copy[p - *argptr] = 0; |
50641945 FN |
951 | |
952 | /* Find that file's data. */ | |
953 | s = lookup_symtab (copy); | |
954 | if (s == 0) | |
955 | { | |
956 | if (!have_full_symbols () && !have_partial_symbols ()) | |
e85428fc | 957 | error ("No symbol table is loaded. Use the \"file\" command."); |
50641945 FN |
958 | error ("No source file named %s.", copy); |
959 | } | |
960 | ||
961 | /* Discard the file name from the arg. */ | |
962 | p = p1 + 1; | |
963 | while (*p == ' ' || *p == '\t') | |
964 | p++; | |
965 | *argptr = p; | |
966 | } | |
967 | #if 0 | |
968 | /* No one really seems to know why this was added. It certainly | |
969 | breaks the command line, though, whenever the passed | |
970 | name is of the form ClassName::Method. This bit of code | |
971 | singles out the class name, and if funfirstline is set (for | |
972 | example, you are setting a breakpoint at this function), | |
973 | you get an error. This did not occur with earlier | |
974 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
975 | else | |
976 | { | |
977 | /* Check if what we have till now is a symbol name */ | |
978 | ||
979 | /* We may be looking at a template instantiation such | |
980 | as "foo<int>". Check here whether we know about it, | |
981 | instead of falling through to the code below which | |
982 | handles ordinary function names, because that code | |
983 | doesn't like seeing '<' and '>' in a name -- the | |
984 | skip_quoted call doesn't go past them. So see if we | |
985 | can figure it out right now. */ | |
986 | ||
987 | copy = (char *) alloca (p - *argptr + 1); | |
988 | memcpy (copy, *argptr, p - *argptr); | |
989 | copy[p - *argptr] = '\000'; | |
990 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
991 | if (sym) | |
992 | { | |
50641945 | 993 | *argptr = (*p == '\'') ? p + 1 : p; |
413dad4d DC |
994 | return symbol_found (funfirstline, canonical, copy, sym, |
995 | NULL, sym_symtab); | |
50641945 FN |
996 | } |
997 | /* Otherwise fall out from here and go to file/line spec | |
998 | processing, etc. */ | |
999 | } | |
1000 | #endif | |
1001 | ||
1002 | /* S is specified file's symtab, or 0 if no file specified. | |
1003 | arg no longer contains the file name. */ | |
1004 | ||
1005 | /* Check whether arg is all digits (and sign) */ | |
1006 | ||
1007 | q = *argptr; | |
1008 | if (*q == '-' || *q == '+') | |
1009 | q++; | |
1010 | while (*q >= '0' && *q <= '9') | |
1011 | q++; | |
1012 | ||
1013 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
1014 | { | |
1015 | /* We found a token consisting of all digits -- at least one digit. */ | |
1016 | enum sign | |
1017 | { | |
1018 | none, plus, minus | |
1019 | } | |
1020 | sign = none; | |
1021 | ||
1022 | /* We might need a canonical line spec if no file was specified. */ | |
1023 | int need_canonical = (s == 0) ? 1 : 0; | |
1024 | ||
1025 | /* This is where we need to make sure that we have good defaults. | |
1026 | We must guarantee that this section of code is never executed | |
1027 | when we are called with just a function name, since | |
53cb0458 | 1028 | set_default_source_symtab_and_line uses |
0378c332 | 1029 | select_source_symtab that calls us with such an argument */ |
50641945 FN |
1030 | |
1031 | if (s == 0 && default_symtab == 0) | |
1032 | { | |
53cb0458 FN |
1033 | struct symtab_and_line cursal; |
1034 | ||
1035 | /* Make sure we have at least a default source file. */ | |
1036 | set_default_source_symtab_and_line (); | |
1037 | cursal = get_current_source_symtab_and_line (); | |
0378c332 FN |
1038 | |
1039 | default_symtab = cursal.symtab; | |
1040 | default_line = cursal.line; | |
50641945 FN |
1041 | } |
1042 | ||
1043 | if (**argptr == '+') | |
1044 | sign = plus, (*argptr)++; | |
1045 | else if (**argptr == '-') | |
1046 | sign = minus, (*argptr)++; | |
1047 | val.line = atoi (*argptr); | |
1048 | switch (sign) | |
1049 | { | |
1050 | case plus: | |
1051 | if (q == *argptr) | |
1052 | val.line = 5; | |
1053 | if (s == 0) | |
1054 | val.line = default_line + val.line; | |
1055 | break; | |
1056 | case minus: | |
1057 | if (q == *argptr) | |
1058 | val.line = 15; | |
1059 | if (s == 0) | |
1060 | val.line = default_line - val.line; | |
1061 | else | |
1062 | val.line = 1; | |
1063 | break; | |
1064 | case none: | |
1065 | break; /* No need to adjust val.line. */ | |
1066 | } | |
1067 | ||
1068 | while (*q == ' ' || *q == '\t') | |
1069 | q++; | |
1070 | *argptr = q; | |
1071 | if (s == 0) | |
1072 | s = default_symtab; | |
1073 | ||
1074 | /* It is possible that this source file has more than one symtab, | |
1075 | and that the new line number specification has moved us from the | |
1076 | default (in s) to a new one. */ | |
1077 | val.symtab = find_line_symtab (s, val.line, NULL, NULL); | |
1078 | if (val.symtab == 0) | |
1079 | val.symtab = s; | |
1080 | ||
1081 | val.pc = 0; | |
1082 | values.sals = (struct symtab_and_line *) | |
1083 | xmalloc (sizeof (struct symtab_and_line)); | |
1084 | values.sals[0] = val; | |
1085 | values.nelts = 1; | |
1086 | if (need_canonical) | |
1087 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1088 | return values; | |
1089 | } | |
1090 | ||
1091 | /* Arg token is not digits => try it as a variable name | |
1092 | Find the next token (everything up to end or next whitespace). */ | |
1093 | ||
1094 | if (**argptr == '$') /* May be a convenience variable */ | |
1095 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */ | |
1096 | else if (is_quoted) | |
1097 | { | |
1098 | p = skip_quoted (*argptr); | |
1099 | if (p[-1] != '\'') | |
1100 | error ("Unmatched single quote."); | |
1101 | } | |
1102 | else if (has_parens) | |
1103 | { | |
1104 | p = pp + 1; | |
1105 | } | |
1106 | else | |
1107 | { | |
1108 | p = skip_quoted (*argptr); | |
1109 | } | |
1110 | ||
50641945 FN |
1111 | copy = (char *) alloca (p - *argptr + 1); |
1112 | memcpy (copy, *argptr, p - *argptr); | |
1113 | copy[p - *argptr] = '\0'; | |
1114 | if (p != *argptr | |
1115 | && copy[0] | |
1116 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 1117 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
1118 | { |
1119 | copy[p - *argptr - 1] = '\0'; | |
1120 | copy++; | |
1121 | } | |
1122 | while (*p == ' ' || *p == '\t') | |
1123 | p++; | |
1124 | *argptr = p; | |
1125 | ||
1126 | /* If it starts with $: may be a legitimate variable or routine name | |
1127 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
1128 | be history value, or it may be a convenience variable */ | |
1129 | ||
1130 | if (*copy == '$') | |
1131 | { | |
3d6d86c6 | 1132 | struct value *valx; |
50641945 FN |
1133 | int index = 0; |
1134 | int need_canonical = 0; | |
1135 | ||
1136 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1137 | while (*p >= '0' && *p <= '9') | |
1138 | p++; | |
1139 | if (!*p) /* reached end of token without hitting non-digit */ | |
1140 | { | |
1141 | /* We have a value history reference */ | |
1142 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); | |
1143 | valx = access_value_history ((copy[1] == '$') ? -index : index); | |
1144 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1145 | error ("History values used in line specs must have integer values."); | |
1146 | } | |
1147 | else | |
1148 | { | |
1149 | /* Not all digits -- may be user variable/function or a | |
1150 | convenience variable */ | |
1151 | ||
1152 | /* Look up entire name as a symbol first */ | |
1153 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
1154 | s = (struct symtab *) 0; | |
1155 | need_canonical = 1; | |
413dad4d | 1156 | /* Symbol was found --> jump to normal symbol processing. */ |
50641945 | 1157 | if (sym) |
413dad4d DC |
1158 | return symbol_found (funfirstline, canonical, copy, sym, |
1159 | NULL, sym_symtab); | |
50641945 FN |
1160 | |
1161 | /* If symbol was not found, look in minimal symbol tables */ | |
9b27852e | 1162 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
50641945 FN |
1163 | /* Min symbol was found --> jump to minsym processing. */ |
1164 | if (msymbol) | |
413dad4d | 1165 | return minsym_found (funfirstline, msymbol); |
50641945 FN |
1166 | |
1167 | /* Not a user variable or function -- must be convenience variable */ | |
1168 | need_canonical = (s == 0) ? 1 : 0; | |
1169 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); | |
1170 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1171 | error ("Convenience variables used in line specs must have integer values."); | |
1172 | } | |
1173 | ||
1174 | /* Either history value or convenience value from above, in valx */ | |
1175 | val.symtab = s ? s : default_symtab; | |
1176 | val.line = value_as_long (valx); | |
1177 | val.pc = 0; | |
1178 | ||
1179 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
1180 | values.sals[0] = val; | |
1181 | values.nelts = 1; | |
1182 | ||
1183 | if (need_canonical) | |
1184 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1185 | ||
1186 | return values; | |
1187 | } | |
1188 | ||
1189 | ||
1190 | /* Look up that token as a variable. | |
1191 | If file specified, use that file's per-file block to start with. */ | |
1192 | ||
1193 | sym = lookup_symbol (copy, | |
1194 | (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) | |
ae767bfb | 1195 | : get_selected_block (0)), |
50641945 FN |
1196 | VAR_NAMESPACE, 0, &sym_symtab); |
1197 | ||
50641945 | 1198 | if (sym != NULL) |
413dad4d | 1199 | return symbol_found (funfirstline, canonical, copy, sym, s, sym_symtab); |
50641945 | 1200 | |
413dad4d | 1201 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
50641945 | 1202 | |
413dad4d DC |
1203 | if (msymbol != NULL) |
1204 | return minsym_found (funfirstline, msymbol); | |
50641945 | 1205 | |
413dad4d DC |
1206 | if (!have_full_symbols () && |
1207 | !have_partial_symbols () && !have_minimal_symbols ()) | |
1208 | error ("No symbol table is loaded. Use the \"file\" command."); | |
50641945 | 1209 | |
413dad4d DC |
1210 | error ("Function \"%s\" not defined.", copy); |
1211 | return values; /* for lint */ | |
1212 | } | |
50641945 | 1213 | |
413dad4d DC |
1214 | |
1215 | \f | |
1216 | ||
1217 | /* Now come some functions that are called from multiple places within | |
1218 | decode_line_1. */ | |
1219 | ||
1220 | /* We've found a symbol SYM to associate with our linespec; build a | |
1221 | corresponding struct symtabs_and_lines. */ | |
1222 | ||
1223 | static struct symtabs_and_lines | |
1224 | symbol_found (int funfirstline, char ***canonical, char *copy, | |
1225 | struct symbol *sym, struct symtab *s, | |
1226 | struct symtab *sym_symtab) | |
1227 | { | |
1228 | struct symtabs_and_lines values; | |
1229 | ||
1230 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
50641945 | 1231 | { |
413dad4d | 1232 | /* Arg is the name of a function */ |
50641945 FN |
1233 | values.sals = (struct symtab_and_line *) |
1234 | xmalloc (sizeof (struct symtab_and_line)); | |
413dad4d DC |
1235 | values.sals[0] = find_function_start_sal (sym, funfirstline); |
1236 | values.nelts = 1; | |
1237 | ||
1238 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1239 | the line containing the parameters or thereabouts, not | |
1240 | the first line of code. */ | |
1241 | ||
1242 | /* We might need a canonical line spec if it is a static | |
1243 | function. */ | |
1244 | if (s == 0) | |
50641945 | 1245 | { |
413dad4d DC |
1246 | struct blockvector *bv = BLOCKVECTOR (sym_symtab); |
1247 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1248 | if (lookup_block_symbol (b, copy, NULL, VAR_NAMESPACE) != NULL) | |
1249 | build_canonical_line_spec (values.sals, copy, canonical); | |
50641945 | 1250 | } |
50641945 FN |
1251 | return values; |
1252 | } | |
413dad4d DC |
1253 | else |
1254 | { | |
1255 | if (funfirstline) | |
1256 | error ("\"%s\" is not a function", copy); | |
1257 | else if (SYMBOL_LINE (sym) != 0) | |
1258 | { | |
1259 | /* We know its line number. */ | |
1260 | values.sals = (struct symtab_and_line *) | |
1261 | xmalloc (sizeof (struct symtab_and_line)); | |
1262 | values.nelts = 1; | |
1263 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
1264 | values.sals[0].symtab = sym_symtab; | |
1265 | values.sals[0].line = SYMBOL_LINE (sym); | |
1266 | return values; | |
1267 | } | |
1268 | else | |
1269 | /* This can happen if it is compiled with a compiler which doesn't | |
1270 | put out line numbers for variables. */ | |
1271 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1272 | and return? For example, "info line foo" could print | |
1273 | the address. */ | |
1274 | error ("Line number not known for symbol \"%s\"", copy); | |
1275 | } | |
1276 | } | |
50641945 | 1277 | |
413dad4d DC |
1278 | /* We've found a minimal symbol MSYMBOL to associate with our |
1279 | linespec; build a corresponding struct symtabs_and_lines. */ | |
50641945 | 1280 | |
413dad4d DC |
1281 | static struct symtabs_and_lines |
1282 | minsym_found (int funfirstline, struct minimal_symbol *msymbol) | |
1283 | { | |
1284 | struct symtabs_and_lines values; | |
1285 | ||
1286 | values.sals = (struct symtab_and_line *) | |
1287 | xmalloc (sizeof (struct symtab_and_line)); | |
1288 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
1289 | (struct sec *) 0, 0); | |
1290 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); | |
1291 | if (funfirstline) | |
1292 | { | |
1293 | values.sals[0].pc += FUNCTION_START_OFFSET; | |
1294 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); | |
1295 | } | |
1296 | values.nelts = 1; | |
1297 | return values; | |
50641945 | 1298 | } |