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" |
50641945 FN |
34 | |
35 | /* Prototype for one function in parser-defs.h, | |
36 | instead of including that entire file. */ | |
37 | ||
38 | extern char *find_template_name_end (char *); | |
39 | ||
40 | /* We share this one with symtab.c, but it is not exported widely. */ | |
41 | ||
42 | extern char *operator_chars (char *, char **); | |
43 | ||
50641945 FN |
44 | /* Prototypes for local functions */ |
45 | ||
255e7dbf | 46 | static void cplusplus_error (const char *name, const char *fmt, ...) ATTR_FORMAT (printf, 2, 3); |
50641945 FN |
47 | |
48 | static int total_number_of_methods (struct type *type); | |
49 | ||
50 | static int find_methods (struct type *, char *, struct symbol **); | |
51 | ||
52 | static void build_canonical_line_spec (struct symtab_and_line *, | |
53 | char *, char ***); | |
54 | ||
55 | static char *find_toplevel_char (char *s, char c); | |
56 | ||
57 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], | |
58 | int, int, char ***); | |
59 | ||
60 | /* Helper functions. */ | |
61 | ||
255e7dbf AC |
62 | /* Issue a helpful hint on using the command completion feature on |
63 | single quoted demangled C++ symbols as part of the completion | |
64 | error. */ | |
50641945 FN |
65 | |
66 | static void | |
255e7dbf | 67 | cplusplus_error (const char *name, const char *fmt, ...) |
50641945 | 68 | { |
255e7dbf AC |
69 | struct ui_file *tmp_stream; |
70 | tmp_stream = mem_fileopen (); | |
71 | make_cleanup_ui_file_delete (tmp_stream); | |
72 | ||
73 | { | |
74 | va_list args; | |
75 | va_start (args, fmt); | |
76 | vfprintf_unfiltered (tmp_stream, fmt, args); | |
77 | va_end (args); | |
78 | } | |
79 | ||
50641945 FN |
80 | while (*name == '\'') |
81 | name++; | |
255e7dbf AC |
82 | fprintf_unfiltered (tmp_stream, |
83 | ("Hint: try '%s<TAB> or '%s<ESC-?>\n" | |
84 | "(Note leading single quote.)"), | |
85 | name, name); | |
86 | error_stream (tmp_stream); | |
50641945 FN |
87 | } |
88 | ||
89 | /* Return the number of methods described for TYPE, including the | |
90 | methods from types it derives from. This can't be done in the symbol | |
91 | reader because the type of the baseclass might still be stubbed | |
92 | when the definition of the derived class is parsed. */ | |
93 | ||
94 | static int | |
95 | total_number_of_methods (struct type *type) | |
96 | { | |
97 | int n; | |
98 | int count; | |
99 | ||
100 | CHECK_TYPEDEF (type); | |
101 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
102 | return 0; | |
103 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
104 | ||
105 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
106 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
107 | ||
108 | return count; | |
109 | } | |
110 | ||
111 | /* Recursive helper function for decode_line_1. | |
112 | Look for methods named NAME in type T. | |
113 | Return number of matches. | |
114 | Put matches in SYM_ARR, which should have been allocated with | |
115 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
116 | Note that this function is g++ specific. */ | |
117 | ||
118 | static int | |
119 | find_methods (struct type *t, char *name, struct symbol **sym_arr) | |
120 | { | |
121 | int i1 = 0; | |
122 | int ibase; | |
50641945 FN |
123 | char *class_name = type_name_no_tag (t); |
124 | ||
125 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
126 | unless we figure out how to get the physname without the name of | |
127 | the class, then the loop can't do any good. */ | |
128 | if (class_name | |
8bd1f2c6 JB |
129 | && (lookup_symbol (class_name, (struct block *) NULL, |
130 | STRUCT_NAMESPACE, (int *) NULL, | |
131 | (struct symtab **) NULL))) | |
50641945 FN |
132 | { |
133 | int method_counter; | |
5c717440 | 134 | int name_len = strlen (name); |
50641945 | 135 | |
8bd1f2c6 | 136 | CHECK_TYPEDEF (t); |
50641945 FN |
137 | |
138 | /* Loop over each method name. At this level, all overloads of a name | |
139 | are counted as a single name. There is an inner loop which loops over | |
140 | each overload. */ | |
141 | ||
142 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
143 | method_counter >= 0; | |
144 | --method_counter) | |
145 | { | |
146 | int field_counter; | |
147 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); | |
148 | char dem_opname[64]; | |
149 | ||
150 | if (strncmp (method_name, "__", 2) == 0 || | |
151 | strncmp (method_name, "op", 2) == 0 || | |
152 | strncmp (method_name, "type", 4) == 0) | |
153 | { | |
154 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
155 | method_name = dem_opname; | |
156 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
157 | method_name = dem_opname; | |
158 | } | |
159 | ||
13b57657 | 160 | if (strcmp_iw (name, method_name) == 0) |
50641945 FN |
161 | /* Find all the overloaded methods with that name. */ |
162 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
163 | field_counter >= 0; | |
164 | --field_counter) | |
165 | { | |
166 | struct fn_field *f; | |
167 | char *phys_name; | |
168 | ||
169 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
170 | ||
171 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
172 | { | |
173 | char *tmp_name; | |
174 | ||
175 | tmp_name = gdb_mangle_name (t, | |
176 | method_counter, | |
177 | field_counter); | |
178 | phys_name = alloca (strlen (tmp_name) + 1); | |
179 | strcpy (phys_name, tmp_name); | |
b8c9b27d | 180 | xfree (tmp_name); |
50641945 FN |
181 | } |
182 | else | |
183 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
8bd1f2c6 | 184 | |
50641945 | 185 | /* Destructor is handled by caller, dont add it to the list */ |
015a42b4 | 186 | if (is_destructor_name (phys_name) != 0) |
50641945 FN |
187 | continue; |
188 | ||
189 | sym_arr[i1] = lookup_symbol (phys_name, | |
190 | NULL, VAR_NAMESPACE, | |
191 | (int *) NULL, | |
192 | (struct symtab **) NULL); | |
193 | if (sym_arr[i1]) | |
194 | i1++; | |
195 | else | |
196 | { | |
197 | /* This error message gets printed, but the method | |
198 | still seems to be found | |
199 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
200 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
201 | language_cplus, | |
202 | DMGL_PARAMS | DMGL_ANSI); | |
203 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
204 | */ | |
205 | } | |
206 | } | |
5c717440 DJ |
207 | else if (strncmp (class_name, name, name_len) == 0 |
208 | && (class_name[name_len] == '\0' | |
209 | || class_name[name_len] == '<')) | |
003d6d1d DJ |
210 | { |
211 | /* For GCC 3.x and stabs, constructors and destructors have names | |
212 | like __base_ctor and __complete_dtor. Check the physname for now | |
213 | if we're looking for a constructor. */ | |
214 | for (field_counter | |
215 | = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
216 | field_counter >= 0; | |
217 | --field_counter) | |
218 | { | |
219 | struct fn_field *f; | |
220 | char *phys_name; | |
221 | ||
222 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
223 | ||
224 | /* GCC 3.x will never produce stabs stub methods, so we don't need | |
225 | to handle this case. */ | |
226 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
227 | continue; | |
228 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
229 | if (! is_constructor_name (phys_name)) | |
230 | continue; | |
231 | ||
232 | /* If this method is actually defined, include it in the | |
233 | list. */ | |
234 | sym_arr[i1] = lookup_symbol (phys_name, | |
235 | NULL, VAR_NAMESPACE, | |
236 | (int *) NULL, | |
237 | (struct symtab **) NULL); | |
238 | if (sym_arr[i1]) | |
239 | i1++; | |
240 | } | |
241 | } | |
50641945 FN |
242 | } |
243 | } | |
244 | ||
245 | /* Only search baseclasses if there is no match yet, since names in | |
246 | derived classes override those in baseclasses. | |
247 | ||
248 | FIXME: The above is not true; it is only true of member functions | |
249 | if they have the same number of arguments (??? - section 13.1 of the | |
250 | ARM says the function members are not in the same scope but doesn't | |
251 | really spell out the rules in a way I understand. In any case, if | |
252 | the number of arguments differ this is a case in which we can overload | |
253 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
254 | rather than hiding in this case). */ | |
255 | ||
256 | if (i1 == 0) | |
257 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
258 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); | |
259 | ||
260 | return i1; | |
261 | } | |
262 | ||
263 | /* Helper function for decode_line_1. | |
264 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
265 | the SAL has a symtab. | |
266 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
267 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
268 | line spec is `filename:linenum'. */ | |
269 | ||
270 | static void | |
271 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
272 | char ***canonical) | |
273 | { | |
274 | char **canonical_arr; | |
275 | char *canonical_name; | |
276 | char *filename; | |
277 | struct symtab *s = sal->symtab; | |
278 | ||
279 | if (s == (struct symtab *) NULL | |
280 | || s->filename == (char *) NULL | |
281 | || canonical == (char ***) NULL) | |
282 | return; | |
283 | ||
284 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
285 | *canonical = canonical_arr; | |
286 | ||
287 | filename = s->filename; | |
288 | if (symname != NULL) | |
289 | { | |
290 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
291 | sprintf (canonical_name, "%s:%s", filename, symname); | |
292 | } | |
293 | else | |
294 | { | |
295 | canonical_name = xmalloc (strlen (filename) + 30); | |
296 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
297 | } | |
298 | canonical_arr[0] = canonical_name; | |
299 | } | |
300 | ||
301 | ||
302 | ||
303 | /* Find an instance of the character C in the string S that is outside | |
304 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
8120c9d5 EZ |
305 | strings. Also, ignore the char within a template name, like a ',' |
306 | within foo<int, int>. */ | |
307 | ||
50641945 FN |
308 | static char * |
309 | find_toplevel_char (char *s, char c) | |
310 | { | |
311 | int quoted = 0; /* zero if we're not in quotes; | |
312 | '"' if we're in a double-quoted string; | |
313 | '\'' if we're in a single-quoted string. */ | |
314 | int depth = 0; /* number of unclosed parens we've seen */ | |
315 | char *scan; | |
316 | ||
317 | for (scan = s; *scan; scan++) | |
318 | { | |
319 | if (quoted) | |
320 | { | |
321 | if (*scan == quoted) | |
322 | quoted = 0; | |
323 | else if (*scan == '\\' && *(scan + 1)) | |
324 | scan++; | |
325 | } | |
326 | else if (*scan == c && ! quoted && depth == 0) | |
327 | return scan; | |
328 | else if (*scan == '"' || *scan == '\'') | |
329 | quoted = *scan; | |
8120c9d5 | 330 | else if (*scan == '(' || *scan == '<') |
50641945 | 331 | depth++; |
8120c9d5 | 332 | else if ((*scan == ')' || *scan == '>') && depth > 0) |
50641945 FN |
333 | depth--; |
334 | } | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to | |
340 | operate on (ask user if necessary). | |
341 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
342 | as canonical line specs there. */ | |
343 | ||
344 | static struct symtabs_and_lines | |
345 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
346 | char ***canonical) | |
347 | { | |
348 | struct symtabs_and_lines values, return_values; | |
349 | char *args, *arg1; | |
350 | int i; | |
351 | char *prompt; | |
352 | char *symname; | |
353 | struct cleanup *old_chain; | |
354 | char **canonical_arr = (char **) NULL; | |
355 | ||
356 | values.sals = (struct symtab_and_line *) | |
357 | alloca (nelts * sizeof (struct symtab_and_line)); | |
358 | return_values.sals = (struct symtab_and_line *) | |
359 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 360 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
361 | |
362 | if (canonical) | |
363 | { | |
364 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 365 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
366 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
367 | *canonical = canonical_arr; | |
368 | } | |
369 | ||
370 | i = 0; | |
371 | printf_unfiltered ("[0] cancel\n[1] all\n"); | |
372 | while (i < nelts) | |
373 | { | |
374 | INIT_SAL (&return_values.sals[i]); /* initialize to zeroes */ | |
375 | INIT_SAL (&values.sals[i]); | |
376 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) | |
377 | { | |
378 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); | |
379 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
380 | (i + 2), | |
381 | SYMBOL_SOURCE_NAME (sym_arr[i]), | |
382 | values.sals[i].symtab->filename, | |
383 | values.sals[i].line); | |
384 | } | |
385 | else | |
386 | printf_unfiltered ("?HERE\n"); | |
387 | i++; | |
388 | } | |
389 | ||
390 | if ((prompt = getenv ("PS2")) == NULL) | |
391 | { | |
392 | prompt = "> "; | |
393 | } | |
394 | args = command_line_input (prompt, 0, "overload-choice"); | |
395 | ||
396 | if (args == 0 || *args == 0) | |
397 | error_no_arg ("one or more choice numbers"); | |
398 | ||
399 | i = 0; | |
400 | while (*args) | |
401 | { | |
402 | int num; | |
403 | ||
404 | arg1 = args; | |
405 | while (*arg1 >= '0' && *arg1 <= '9') | |
406 | arg1++; | |
407 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
408 | error ("Arguments must be choice numbers."); | |
409 | ||
410 | num = atoi (args); | |
411 | ||
412 | if (num == 0) | |
413 | error ("canceled"); | |
414 | else if (num == 1) | |
415 | { | |
416 | if (canonical_arr) | |
417 | { | |
418 | for (i = 0; i < nelts; i++) | |
419 | { | |
420 | if (canonical_arr[i] == NULL) | |
421 | { | |
422 | symname = SYMBOL_NAME (sym_arr[i]); | |
423 | canonical_arr[i] = savestring (symname, strlen (symname)); | |
424 | } | |
425 | } | |
426 | } | |
427 | memcpy (return_values.sals, values.sals, | |
428 | (nelts * sizeof (struct symtab_and_line))); | |
429 | return_values.nelts = nelts; | |
430 | discard_cleanups (old_chain); | |
431 | return return_values; | |
432 | } | |
433 | ||
434 | if (num >= nelts + 2) | |
435 | { | |
436 | printf_unfiltered ("No choice number %d.\n", num); | |
437 | } | |
438 | else | |
439 | { | |
440 | num -= 2; | |
441 | if (values.sals[num].pc) | |
442 | { | |
443 | if (canonical_arr) | |
444 | { | |
445 | symname = SYMBOL_NAME (sym_arr[num]); | |
b8c9b27d | 446 | make_cleanup (xfree, symname); |
50641945 FN |
447 | canonical_arr[i] = savestring (symname, strlen (symname)); |
448 | } | |
449 | return_values.sals[i++] = values.sals[num]; | |
450 | values.sals[num].pc = 0; | |
451 | } | |
452 | else | |
453 | { | |
454 | printf_unfiltered ("duplicate request for %d ignored.\n", num); | |
455 | } | |
456 | } | |
457 | ||
458 | args = arg1; | |
459 | while (*args == ' ' || *args == '\t') | |
460 | args++; | |
461 | } | |
462 | return_values.nelts = i; | |
463 | discard_cleanups (old_chain); | |
464 | return return_values; | |
465 | } | |
466 | \f | |
467 | /* The parser of linespec itself. */ | |
468 | ||
469 | /* Parse a string that specifies a line number. | |
470 | Pass the address of a char * variable; that variable will be | |
471 | advanced over the characters actually parsed. | |
472 | ||
473 | The string can be: | |
474 | ||
475 | LINENUM -- that line number in current file. PC returned is 0. | |
476 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
477 | FUNCTION -- line number of openbrace of that function. | |
478 | PC returned is the start of the function. | |
479 | VARIABLE -- line number of definition of that variable. | |
480 | PC returned is 0. | |
481 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
482 | *EXPR -- line in which address EXPR appears. | |
483 | ||
484 | This may all be followed by an "if EXPR", which we ignore. | |
485 | ||
486 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
487 | ||
488 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
489 | of real code inside a function when a function is specified, and it is | |
490 | not OK to specify a variable or type to get its line number. | |
491 | ||
492 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
493 | It defaults to current_source_symtab. | |
494 | DEFAULT_LINE specifies the line number to use for relative | |
495 | line numbers (that start with signs). Defaults to current_source_line. | |
496 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
497 | line specs there if necessary. Currently overloaded member functions and | |
498 | line numbers or static functions without a filename yield a canonical | |
499 | line spec. The array and the line spec strings are allocated on the heap, | |
500 | it is the callers responsibility to free them. | |
501 | ||
502 | Note that it is possible to return zero for the symtab | |
503 | if no file is validly specified. Callers must check that. | |
504 | Also, the line number returned may be invalid. */ | |
505 | ||
506 | /* We allow single quotes in various places. This is a hideous | |
507 | kludge, which exists because the completer can't yet deal with the | |
508 | lack of single quotes. FIXME: write a linespec_completer which we | |
509 | can use as appropriate instead of make_symbol_completion_list. */ | |
510 | ||
511 | struct symtabs_and_lines | |
512 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
513 | int default_line, char ***canonical) | |
514 | { | |
515 | struct symtabs_and_lines values; | |
50641945 | 516 | struct symtab_and_line val; |
50641945 FN |
517 | register char *p, *p1; |
518 | char *q, *pp, *ii, *p2; | |
519 | #if 0 | |
520 | char *q1; | |
521 | #endif | |
522 | register struct symtab *s; | |
523 | ||
524 | register struct symbol *sym; | |
525 | /* The symtab that SYM was found in. */ | |
526 | struct symtab *sym_symtab; | |
527 | ||
528 | register CORE_ADDR pc; | |
529 | register struct minimal_symbol *msymbol; | |
530 | char *copy; | |
531 | struct symbol *sym_class; | |
532 | int i1; | |
533 | int is_quoted; | |
534 | int is_quote_enclosed; | |
535 | int has_parens; | |
536 | int has_if = 0; | |
537 | int has_comma = 0; | |
538 | struct symbol **sym_arr; | |
539 | struct type *t; | |
540 | char *saved_arg = *argptr; | |
541 | extern char *gdb_completer_quote_characters; | |
542 | ||
543 | INIT_SAL (&val); /* initialize to zeroes */ | |
544 | ||
545 | /* Defaults have defaults. */ | |
546 | ||
547 | if (default_symtab == 0) | |
548 | { | |
0378c332 FN |
549 | /* Use whatever we have for the default source line. We don't use |
550 | get_current_or_default_symtab_and_line as it can recurse and call | |
551 | us back! */ | |
552 | struct symtab_and_line cursal = | |
553 | get_current_source_symtab_and_line (); | |
554 | ||
555 | default_symtab = cursal.symtab; | |
556 | default_line = cursal.line; | |
50641945 FN |
557 | } |
558 | ||
559 | /* See if arg is *PC */ | |
560 | ||
561 | if (**argptr == '*') | |
562 | { | |
563 | (*argptr)++; | |
564 | pc = parse_and_eval_address_1 (argptr); | |
565 | ||
566 | values.sals = (struct symtab_and_line *) | |
567 | xmalloc (sizeof (struct symtab_and_line)); | |
568 | ||
569 | values.nelts = 1; | |
570 | values.sals[0] = find_pc_line (pc, 0); | |
571 | values.sals[0].pc = pc; | |
572 | values.sals[0].section = find_pc_overlay (pc); | |
573 | ||
574 | return values; | |
575 | } | |
576 | ||
577 | /* 'has_if' is for the syntax: | |
578 | * (gdb) break foo if (a==b) | |
579 | */ | |
580 | if ((ii = strstr (*argptr, " if ")) != NULL || | |
581 | (ii = strstr (*argptr, "\tif ")) != NULL || | |
582 | (ii = strstr (*argptr, " if\t")) != NULL || | |
583 | (ii = strstr (*argptr, "\tif\t")) != NULL || | |
584 | (ii = strstr (*argptr, " if(")) != NULL || | |
585 | (ii = strstr (*argptr, "\tif( ")) != NULL) | |
586 | has_if = 1; | |
587 | /* Temporarily zap out "if (condition)" to not | |
588 | * confuse the parenthesis-checking code below. | |
589 | * This is undone below. Do not change ii!! | |
590 | */ | |
591 | if (has_if) | |
592 | { | |
593 | *ii = '\0'; | |
594 | } | |
595 | ||
596 | /* Set various flags. | |
597 | * 'has_parens' is important for overload checking, where | |
598 | * we allow things like: | |
599 | * (gdb) break c::f(int) | |
600 | */ | |
601 | ||
602 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
603 | ||
604 | is_quoted = (**argptr | |
c5f0f3d0 FN |
605 | && strchr (get_gdb_completer_quote_characters (), |
606 | **argptr) != NULL); | |
50641945 FN |
607 | |
608 | has_parens = ((pp = strchr (*argptr, '(')) != NULL | |
609 | && (pp = strrchr (pp, ')')) != NULL); | |
610 | ||
611 | /* Now that we're safely past the has_parens check, | |
612 | * put back " if (condition)" so outer layers can see it | |
613 | */ | |
614 | if (has_if) | |
615 | *ii = ' '; | |
616 | ||
617 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
618 | and we must isolate the first half. Outer layers will call again later | |
619 | for the second half. | |
620 | ||
621 | Don't count commas that appear in argument lists of overloaded | |
622 | functions, or in quoted strings. It's stupid to go to this much | |
623 | trouble when the rest of the function is such an obvious roach hotel. */ | |
624 | ii = find_toplevel_char (*argptr, ','); | |
625 | has_comma = (ii != 0); | |
626 | ||
627 | /* Temporarily zap out second half to not | |
628 | * confuse the code below. | |
629 | * This is undone below. Do not change ii!! | |
630 | */ | |
631 | if (has_comma) | |
632 | { | |
633 | *ii = '\0'; | |
634 | } | |
635 | ||
636 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
637 | /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ | |
638 | /* Look for ':', but ignore inside of <> */ | |
639 | ||
640 | s = NULL; | |
641 | p = *argptr; | |
77cd5909 | 642 | if (p[0] == '"') |
50641945 FN |
643 | { |
644 | is_quote_enclosed = 1; | |
91c1720e | 645 | (*argptr)++; |
77cd5909 | 646 | p++; |
50641945 FN |
647 | } |
648 | else | |
649 | is_quote_enclosed = 0; | |
650 | for (; *p; p++) | |
651 | { | |
652 | if (p[0] == '<') | |
653 | { | |
654 | char *temp_end = find_template_name_end (p); | |
655 | if (!temp_end) | |
656 | error ("malformed template specification in command"); | |
657 | p = temp_end; | |
658 | } | |
659 | /* Check for the end of the first half of the linespec. End of line, | |
660 | a tab, a double colon or the last single colon, or a space. But | |
661 | if enclosed in double quotes we do not break on enclosed spaces */ | |
662 | if (!*p | |
663 | || p[0] == '\t' | |
664 | || ((p[0] == ':') | |
665 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
666 | || ((p[0] == ' ') && !is_quote_enclosed)) | |
667 | break; | |
668 | if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */ | |
669 | { | |
670 | /* Find the *last* '.', since the others are package qualifiers. */ | |
671 | for (p1 = p; *p1; p1++) | |
672 | { | |
673 | if (*p1 == '.') | |
674 | p = p1; | |
675 | } | |
676 | break; | |
677 | } | |
678 | } | |
679 | while (p[0] == ' ' || p[0] == '\t') | |
680 | p++; | |
681 | ||
682 | /* if the closing double quote was left at the end, remove it */ | |
683 | if (is_quote_enclosed) | |
684 | { | |
77cd5909 | 685 | char *closing_quote = strchr (p - 1, '"'); |
50641945 FN |
686 | if (closing_quote && closing_quote[1] == '\0') |
687 | *closing_quote = '\0'; | |
688 | } | |
689 | ||
690 | /* Now that we've safely parsed the first half, | |
691 | * put back ',' so outer layers can see it | |
692 | */ | |
693 | if (has_comma) | |
694 | *ii = ','; | |
695 | ||
696 | if ((p[0] == ':' || p[0] == '.') && !has_parens) | |
697 | { | |
698 | /* C++ */ | |
699 | /* ... or Java */ | |
700 | if (is_quoted) | |
701 | *argptr = *argptr + 1; | |
702 | if (p[0] == '.' || p[1] == ':') | |
703 | { | |
704 | char *saved_arg2 = *argptr; | |
705 | char *temp_end; | |
706 | /* First check for "global" namespace specification, | |
707 | of the form "::foo". If found, skip over the colons | |
708 | and jump to normal symbol processing */ | |
709 | if (p[0] == ':' | |
710 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
711 | saved_arg2 += 2; | |
712 | ||
713 | /* We have what looks like a class or namespace | |
714 | scope specification (A::B), possibly with many | |
715 | levels of namespaces or classes (A::B::C::D). | |
716 | ||
717 | Some versions of the HP ANSI C++ compiler (as also possibly | |
718 | other compilers) generate class/function/member names with | |
719 | embedded double-colons if they are inside namespaces. To | |
720 | handle this, we loop a few times, considering larger and | |
721 | larger prefixes of the string as though they were single | |
722 | symbols. So, if the initially supplied string is | |
723 | A::B::C::D::foo, we have to look up "A", then "A::B", | |
724 | then "A::B::C", then "A::B::C::D", and finally | |
725 | "A::B::C::D::foo" as single, monolithic symbols, because | |
726 | A, B, C or D may be namespaces. | |
727 | ||
728 | Note that namespaces can nest only inside other | |
729 | namespaces, and not inside classes. So we need only | |
730 | consider *prefixes* of the string; there is no need to look up | |
731 | "B::C" separately as a symbol in the previous example. */ | |
732 | ||
733 | p2 = p; /* save for restart */ | |
734 | while (1) | |
735 | { | |
736 | /* Extract the class name. */ | |
737 | p1 = p; | |
738 | while (p != *argptr && p[-1] == ' ') | |
739 | --p; | |
740 | copy = (char *) alloca (p - *argptr + 1); | |
741 | memcpy (copy, *argptr, p - *argptr); | |
742 | copy[p - *argptr] = 0; | |
743 | ||
744 | /* Discard the class name from the arg. */ | |
745 | p = p1 + (p1[0] == ':' ? 2 : 1); | |
746 | while (*p == ' ' || *p == '\t') | |
747 | p++; | |
748 | *argptr = p; | |
749 | ||
750 | sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, | |
751 | (struct symtab **) NULL); | |
752 | ||
753 | if (sym_class && | |
754 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
755 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
756 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
757 | { | |
758 | /* Arg token is not digits => try it as a function name | |
759 | Find the next token(everything up to end or next blank). */ | |
760 | if (**argptr | |
c5f0f3d0 FN |
761 | && strchr (get_gdb_completer_quote_characters (), |
762 | **argptr) != NULL) | |
50641945 FN |
763 | { |
764 | p = skip_quoted (*argptr); | |
765 | *argptr = *argptr + 1; | |
766 | } | |
767 | else | |
768 | { | |
769 | p = *argptr; | |
770 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
771 | p++; | |
772 | } | |
773 | /* | |
774 | q = operator_chars (*argptr, &q1); | |
775 | if (q1 - q) | |
776 | { | |
777 | char *opname; | |
778 | char *tmp = alloca (q1 - q + 1); | |
779 | memcpy (tmp, q, q1 - q); | |
780 | tmp[q1 - q] = '\0'; | |
781 | opname = cplus_mangle_opname (tmp, DMGL_ANSI); | |
782 | if (opname == NULL) | |
783 | { | |
255e7dbf | 784 | cplusplus_error (saved_arg, "no mangling for \"%s\"\n", tmp); |
50641945 FN |
785 | } |
786 | copy = (char*) alloca (3 + strlen(opname)); | |
787 | sprintf (copy, "__%s", opname); | |
788 | p = q1; | |
789 | } | |
790 | else | |
791 | */ | |
792 | { | |
793 | copy = (char *) alloca (p - *argptr + 1); | |
794 | memcpy (copy, *argptr, p - *argptr); | |
795 | copy[p - *argptr] = '\0'; | |
796 | if (p != *argptr | |
797 | && copy[p - *argptr - 1] | |
c5f0f3d0 | 798 | && strchr (get_gdb_completer_quote_characters (), |
50641945 FN |
799 | copy[p - *argptr - 1]) != NULL) |
800 | copy[p - *argptr - 1] = '\0'; | |
801 | } | |
802 | ||
803 | /* no line number may be specified */ | |
804 | while (*p == ' ' || *p == '\t') | |
805 | p++; | |
806 | *argptr = p; | |
807 | ||
808 | sym = 0; | |
809 | i1 = 0; /* counter for the symbol array */ | |
810 | sym_arr = (struct symbol **) alloca (total_number_of_methods (t) | |
811 | * sizeof (struct symbol *)); | |
812 | ||
813 | if (destructor_name_p (copy, t)) | |
814 | { | |
815 | /* Destructors are a special case. */ | |
816 | int m_index, f_index; | |
817 | ||
818 | if (get_destructor_fn_field (t, &m_index, &f_index)) | |
819 | { | |
820 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); | |
821 | ||
822 | sym_arr[i1] = | |
823 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), | |
824 | NULL, VAR_NAMESPACE, (int *) NULL, | |
825 | (struct symtab **) NULL); | |
826 | if (sym_arr[i1]) | |
827 | i1++; | |
828 | } | |
829 | } | |
830 | else | |
831 | i1 = find_methods (t, copy, sym_arr); | |
832 | if (i1 == 1) | |
833 | { | |
834 | /* There is exactly one field with that name. */ | |
835 | sym = sym_arr[0]; | |
836 | ||
837 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
838 | { | |
839 | values.sals = (struct symtab_and_line *) | |
840 | xmalloc (sizeof (struct symtab_and_line)); | |
841 | values.nelts = 1; | |
842 | values.sals[0] = find_function_start_sal (sym, | |
843 | funfirstline); | |
844 | } | |
845 | else | |
846 | { | |
847 | values.nelts = 0; | |
848 | } | |
849 | return values; | |
850 | } | |
851 | if (i1 > 0) | |
852 | { | |
853 | /* There is more than one field with that name | |
854 | (overloaded). Ask the user which one to use. */ | |
855 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
856 | } | |
857 | else | |
858 | { | |
859 | char *tmp; | |
860 | ||
015a42b4 | 861 | if (is_operator_name (copy)) |
50641945 FN |
862 | { |
863 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
864 | strcpy (tmp, "operator "); | |
865 | strcat (tmp, copy + 3); | |
866 | } | |
867 | else | |
868 | tmp = copy; | |
50641945 | 869 | if (tmp[0] == '~') |
255e7dbf AC |
870 | cplusplus_error (saved_arg, |
871 | "the class `%s' does not have destructor defined\n", | |
872 | SYMBOL_SOURCE_NAME (sym_class)); | |
50641945 | 873 | else |
255e7dbf AC |
874 | cplusplus_error (saved_arg, |
875 | "the class %s does not have any method named %s\n", | |
876 | SYMBOL_SOURCE_NAME (sym_class), tmp); | |
50641945 FN |
877 | } |
878 | } | |
879 | ||
880 | /* Move pointer up to next possible class/namespace token */ | |
881 | p = p2 + 1; /* restart with old value +1 */ | |
882 | /* Move pointer ahead to next double-colon */ | |
883 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) | |
884 | { | |
885 | if (p[0] == '<') | |
886 | { | |
887 | temp_end = find_template_name_end (p); | |
888 | if (!temp_end) | |
889 | error ("malformed template specification in command"); | |
890 | p = temp_end; | |
891 | } | |
892 | else if ((p[0] == ':') && (p[1] == ':')) | |
893 | break; /* found double-colon */ | |
894 | else | |
895 | p++; | |
896 | } | |
897 | ||
898 | if (*p != ':') | |
899 | break; /* out of the while (1) */ | |
900 | ||
901 | p2 = p; /* save restart for next time around */ | |
902 | *argptr = saved_arg2; /* restore argptr */ | |
903 | } /* while (1) */ | |
904 | ||
905 | /* Last chance attempt -- check entire name as a symbol */ | |
906 | /* Use "copy" in preparation for jumping out of this block, | |
907 | to be consistent with usage following the jump target */ | |
908 | copy = (char *) alloca (p - saved_arg2 + 1); | |
909 | memcpy (copy, saved_arg2, p - saved_arg2); | |
910 | /* Note: if is_quoted should be true, we snuff out quote here anyway */ | |
911 | copy[p - saved_arg2] = '\000'; | |
912 | /* Set argptr to skip over the name */ | |
913 | *argptr = (*p == '\'') ? p + 1 : p; | |
914 | /* Look up entire name */ | |
915 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
916 | s = (struct symtab *) 0; | |
917 | /* Prepare to jump: restore the " if (condition)" so outer layers see it */ | |
918 | /* Symbol was found --> jump to normal symbol processing. | |
919 | Code following "symbol_found" expects "copy" to have the | |
920 | symbol name, "sym" to have the symbol pointer, "s" to be | |
921 | a specified file's symtab, and sym_symtab to be the symbol's | |
922 | symtab. */ | |
923 | /* By jumping there we avoid falling through the FILE:LINE and | |
924 | FILE:FUNC processing stuff below */ | |
925 | if (sym) | |
926 | goto symbol_found; | |
927 | ||
928 | /* Couldn't find any interpretation as classes/namespaces, so give up */ | |
50641945 | 929 | /* The quotes are important if copy is empty. */ |
255e7dbf AC |
930 | cplusplus_error (saved_arg, |
931 | "Can't find member of namespace, class, struct, or union named \"%s\"\n", | |
932 | copy); | |
50641945 FN |
933 | } |
934 | /* end of C++ */ | |
935 | ||
936 | ||
937 | /* Extract the file name. */ | |
938 | p1 = p; | |
939 | while (p != *argptr && p[-1] == ' ') | |
940 | --p; | |
941 | if ((*p == '"') && is_quote_enclosed) | |
942 | --p; | |
943 | copy = (char *) alloca (p - *argptr + 1); | |
2654e6d4 DJ |
944 | memcpy (copy, *argptr, p - *argptr); |
945 | /* It may have the ending quote right after the file name */ | |
946 | if (is_quote_enclosed && copy[p - *argptr - 1] == '"') | |
947 | copy[p - *argptr - 1] = 0; | |
50641945 | 948 | else |
2654e6d4 | 949 | copy[p - *argptr] = 0; |
50641945 FN |
950 | |
951 | /* Find that file's data. */ | |
952 | s = lookup_symtab (copy); | |
953 | if (s == 0) | |
954 | { | |
955 | if (!have_full_symbols () && !have_partial_symbols ()) | |
e85428fc | 956 | error ("No symbol table is loaded. Use the \"file\" command."); |
50641945 FN |
957 | error ("No source file named %s.", copy); |
958 | } | |
959 | ||
960 | /* Discard the file name from the arg. */ | |
961 | p = p1 + 1; | |
962 | while (*p == ' ' || *p == '\t') | |
963 | p++; | |
964 | *argptr = p; | |
965 | } | |
966 | #if 0 | |
967 | /* No one really seems to know why this was added. It certainly | |
968 | breaks the command line, though, whenever the passed | |
969 | name is of the form ClassName::Method. This bit of code | |
970 | singles out the class name, and if funfirstline is set (for | |
971 | example, you are setting a breakpoint at this function), | |
972 | you get an error. This did not occur with earlier | |
973 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
974 | else | |
975 | { | |
976 | /* Check if what we have till now is a symbol name */ | |
977 | ||
978 | /* We may be looking at a template instantiation such | |
979 | as "foo<int>". Check here whether we know about it, | |
980 | instead of falling through to the code below which | |
981 | handles ordinary function names, because that code | |
982 | doesn't like seeing '<' and '>' in a name -- the | |
983 | skip_quoted call doesn't go past them. So see if we | |
984 | can figure it out right now. */ | |
985 | ||
986 | copy = (char *) alloca (p - *argptr + 1); | |
987 | memcpy (copy, *argptr, p - *argptr); | |
988 | copy[p - *argptr] = '\000'; | |
989 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
990 | if (sym) | |
991 | { | |
992 | /* Yes, we have a symbol; jump to symbol processing */ | |
993 | /* Code after symbol_found expects S, SYM_SYMTAB, SYM, | |
994 | and COPY to be set correctly */ | |
995 | *argptr = (*p == '\'') ? p + 1 : p; | |
996 | s = (struct symtab *) 0; | |
997 | goto symbol_found; | |
998 | } | |
999 | /* Otherwise fall out from here and go to file/line spec | |
1000 | processing, etc. */ | |
1001 | } | |
1002 | #endif | |
1003 | ||
1004 | /* S is specified file's symtab, or 0 if no file specified. | |
1005 | arg no longer contains the file name. */ | |
1006 | ||
1007 | /* Check whether arg is all digits (and sign) */ | |
1008 | ||
1009 | q = *argptr; | |
1010 | if (*q == '-' || *q == '+') | |
1011 | q++; | |
1012 | while (*q >= '0' && *q <= '9') | |
1013 | q++; | |
1014 | ||
1015 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
1016 | { | |
1017 | /* We found a token consisting of all digits -- at least one digit. */ | |
1018 | enum sign | |
1019 | { | |
1020 | none, plus, minus | |
1021 | } | |
1022 | sign = none; | |
1023 | ||
1024 | /* We might need a canonical line spec if no file was specified. */ | |
1025 | int need_canonical = (s == 0) ? 1 : 0; | |
1026 | ||
1027 | /* This is where we need to make sure that we have good defaults. | |
1028 | We must guarantee that this section of code is never executed | |
1029 | when we are called with just a function name, since | |
53cb0458 | 1030 | set_default_source_symtab_and_line uses |
0378c332 | 1031 | select_source_symtab that calls us with such an argument */ |
50641945 FN |
1032 | |
1033 | if (s == 0 && default_symtab == 0) | |
1034 | { | |
53cb0458 FN |
1035 | struct symtab_and_line cursal; |
1036 | ||
1037 | /* Make sure we have at least a default source file. */ | |
1038 | set_default_source_symtab_and_line (); | |
1039 | cursal = get_current_source_symtab_and_line (); | |
0378c332 FN |
1040 | |
1041 | default_symtab = cursal.symtab; | |
1042 | default_line = cursal.line; | |
50641945 FN |
1043 | } |
1044 | ||
1045 | if (**argptr == '+') | |
1046 | sign = plus, (*argptr)++; | |
1047 | else if (**argptr == '-') | |
1048 | sign = minus, (*argptr)++; | |
1049 | val.line = atoi (*argptr); | |
1050 | switch (sign) | |
1051 | { | |
1052 | case plus: | |
1053 | if (q == *argptr) | |
1054 | val.line = 5; | |
1055 | if (s == 0) | |
1056 | val.line = default_line + val.line; | |
1057 | break; | |
1058 | case minus: | |
1059 | if (q == *argptr) | |
1060 | val.line = 15; | |
1061 | if (s == 0) | |
1062 | val.line = default_line - val.line; | |
1063 | else | |
1064 | val.line = 1; | |
1065 | break; | |
1066 | case none: | |
1067 | break; /* No need to adjust val.line. */ | |
1068 | } | |
1069 | ||
1070 | while (*q == ' ' || *q == '\t') | |
1071 | q++; | |
1072 | *argptr = q; | |
1073 | if (s == 0) | |
1074 | s = default_symtab; | |
1075 | ||
1076 | /* It is possible that this source file has more than one symtab, | |
1077 | and that the new line number specification has moved us from the | |
1078 | default (in s) to a new one. */ | |
1079 | val.symtab = find_line_symtab (s, val.line, NULL, NULL); | |
1080 | if (val.symtab == 0) | |
1081 | val.symtab = s; | |
1082 | ||
1083 | val.pc = 0; | |
1084 | values.sals = (struct symtab_and_line *) | |
1085 | xmalloc (sizeof (struct symtab_and_line)); | |
1086 | values.sals[0] = val; | |
1087 | values.nelts = 1; | |
1088 | if (need_canonical) | |
1089 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1090 | return values; | |
1091 | } | |
1092 | ||
1093 | /* Arg token is not digits => try it as a variable name | |
1094 | Find the next token (everything up to end or next whitespace). */ | |
1095 | ||
1096 | if (**argptr == '$') /* May be a convenience variable */ | |
1097 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */ | |
1098 | else if (is_quoted) | |
1099 | { | |
1100 | p = skip_quoted (*argptr); | |
1101 | if (p[-1] != '\'') | |
1102 | error ("Unmatched single quote."); | |
1103 | } | |
1104 | else if (has_parens) | |
1105 | { | |
1106 | p = pp + 1; | |
1107 | } | |
1108 | else | |
1109 | { | |
1110 | p = skip_quoted (*argptr); | |
1111 | } | |
1112 | ||
50641945 FN |
1113 | copy = (char *) alloca (p - *argptr + 1); |
1114 | memcpy (copy, *argptr, p - *argptr); | |
1115 | copy[p - *argptr] = '\0'; | |
1116 | if (p != *argptr | |
1117 | && copy[0] | |
1118 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 1119 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
1120 | { |
1121 | copy[p - *argptr - 1] = '\0'; | |
1122 | copy++; | |
1123 | } | |
1124 | while (*p == ' ' || *p == '\t') | |
1125 | p++; | |
1126 | *argptr = p; | |
1127 | ||
1128 | /* If it starts with $: may be a legitimate variable or routine name | |
1129 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
1130 | be history value, or it may be a convenience variable */ | |
1131 | ||
1132 | if (*copy == '$') | |
1133 | { | |
3d6d86c6 | 1134 | struct value *valx; |
50641945 FN |
1135 | int index = 0; |
1136 | int need_canonical = 0; | |
1137 | ||
1138 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1139 | while (*p >= '0' && *p <= '9') | |
1140 | p++; | |
1141 | if (!*p) /* reached end of token without hitting non-digit */ | |
1142 | { | |
1143 | /* We have a value history reference */ | |
1144 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); | |
1145 | valx = access_value_history ((copy[1] == '$') ? -index : index); | |
1146 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1147 | error ("History values used in line specs must have integer values."); | |
1148 | } | |
1149 | else | |
1150 | { | |
1151 | /* Not all digits -- may be user variable/function or a | |
1152 | convenience variable */ | |
1153 | ||
1154 | /* Look up entire name as a symbol first */ | |
1155 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
1156 | s = (struct symtab *) 0; | |
1157 | need_canonical = 1; | |
1158 | /* Symbol was found --> jump to normal symbol processing. | |
1159 | Code following "symbol_found" expects "copy" to have the | |
1160 | symbol name, "sym" to have the symbol pointer, "s" to be | |
1161 | a specified file's symtab, and sym_symtab to be the symbol's | |
1162 | symtab. */ | |
1163 | if (sym) | |
1164 | goto symbol_found; | |
1165 | ||
1166 | /* If symbol was not found, look in minimal symbol tables */ | |
9b27852e | 1167 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); |
50641945 FN |
1168 | /* Min symbol was found --> jump to minsym processing. */ |
1169 | if (msymbol) | |
1170 | goto minimal_symbol_found; | |
1171 | ||
1172 | /* Not a user variable or function -- must be convenience variable */ | |
1173 | need_canonical = (s == 0) ? 1 : 0; | |
1174 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); | |
1175 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1176 | error ("Convenience variables used in line specs must have integer values."); | |
1177 | } | |
1178 | ||
1179 | /* Either history value or convenience value from above, in valx */ | |
1180 | val.symtab = s ? s : default_symtab; | |
1181 | val.line = value_as_long (valx); | |
1182 | val.pc = 0; | |
1183 | ||
1184 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
1185 | values.sals[0] = val; | |
1186 | values.nelts = 1; | |
1187 | ||
1188 | if (need_canonical) | |
1189 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1190 | ||
1191 | return values; | |
1192 | } | |
1193 | ||
1194 | ||
1195 | /* Look up that token as a variable. | |
1196 | If file specified, use that file's per-file block to start with. */ | |
1197 | ||
1198 | sym = lookup_symbol (copy, | |
1199 | (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) | |
ae767bfb | 1200 | : get_selected_block (0)), |
50641945 FN |
1201 | VAR_NAMESPACE, 0, &sym_symtab); |
1202 | ||
1203 | symbol_found: /* We also jump here from inside the C++ class/namespace | |
1204 | code on finding a symbol of the form "A::B::C" */ | |
1205 | ||
1206 | if (sym != NULL) | |
1207 | { | |
1208 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1209 | { | |
1210 | /* Arg is the name of a function */ | |
1211 | values.sals = (struct symtab_and_line *) | |
1212 | xmalloc (sizeof (struct symtab_and_line)); | |
1213 | values.sals[0] = find_function_start_sal (sym, funfirstline); | |
1214 | values.nelts = 1; | |
1215 | ||
1216 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1217 | the line containing the parameters or thereabouts, not | |
1218 | the first line of code. */ | |
1219 | ||
1220 | /* We might need a canonical line spec if it is a static | |
1221 | function. */ | |
1222 | if (s == 0) | |
1223 | { | |
1224 | struct blockvector *bv = BLOCKVECTOR (sym_symtab); | |
1225 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
3121eff0 | 1226 | if (lookup_block_symbol (b, copy, NULL, VAR_NAMESPACE) != NULL) |
50641945 FN |
1227 | build_canonical_line_spec (values.sals, copy, canonical); |
1228 | } | |
1229 | return values; | |
1230 | } | |
1231 | else | |
1232 | { | |
1233 | if (funfirstline) | |
1234 | error ("\"%s\" is not a function", copy); | |
1235 | else if (SYMBOL_LINE (sym) != 0) | |
1236 | { | |
1237 | /* We know its line number. */ | |
1238 | values.sals = (struct symtab_and_line *) | |
1239 | xmalloc (sizeof (struct symtab_and_line)); | |
1240 | values.nelts = 1; | |
1241 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
1242 | values.sals[0].symtab = sym_symtab; | |
1243 | values.sals[0].line = SYMBOL_LINE (sym); | |
1244 | return values; | |
1245 | } | |
1246 | else | |
1247 | /* This can happen if it is compiled with a compiler which doesn't | |
1248 | put out line numbers for variables. */ | |
1249 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1250 | and return? For example, "info line foo" could print | |
1251 | the address. */ | |
1252 | error ("Line number not known for symbol \"%s\"", copy); | |
1253 | } | |
1254 | } | |
1255 | ||
1256 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); | |
1257 | ||
1258 | minimal_symbol_found: /* We also jump here from the case for variables | |
1259 | that begin with '$' */ | |
1260 | ||
1261 | if (msymbol != NULL) | |
1262 | { | |
1263 | values.sals = (struct symtab_and_line *) | |
1264 | xmalloc (sizeof (struct symtab_and_line)); | |
1265 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
1266 | (struct sec *) 0, 0); | |
1267 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); | |
1268 | if (funfirstline) | |
1269 | { | |
1270 | values.sals[0].pc += FUNCTION_START_OFFSET; | |
1271 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); | |
1272 | } | |
1273 | values.nelts = 1; | |
1274 | return values; | |
1275 | } | |
1276 | ||
1277 | if (!have_full_symbols () && | |
1278 | !have_partial_symbols () && !have_minimal_symbols ()) | |
e85428fc | 1279 | error ("No symbol table is loaded. Use the \"file\" command."); |
50641945 FN |
1280 | |
1281 | error ("Function \"%s\" not defined.", copy); | |
1282 | return values; /* for lint */ | |
1283 | } |