Commit | Line | Data |
---|---|---|
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" | |
50641945 | 29 | #include "demangle.h" |
c5f0f3d0 FN |
30 | #include "value.h" |
31 | #include "completer.h" | |
50641945 FN |
32 | |
33 | /* Prototype for one function in parser-defs.h, | |
34 | instead of including that entire file. */ | |
35 | ||
36 | extern char *find_template_name_end (char *); | |
37 | ||
38 | /* We share this one with symtab.c, but it is not exported widely. */ | |
39 | ||
40 | extern char *operator_chars (char *, char **); | |
41 | ||
50641945 FN |
42 | /* Prototypes for local functions */ |
43 | ||
44 | static void cplusplus_hint (char *name); | |
45 | ||
46 | static int total_number_of_methods (struct type *type); | |
47 | ||
48 | static int find_methods (struct type *, char *, struct symbol **); | |
49 | ||
50 | static void build_canonical_line_spec (struct symtab_and_line *, | |
51 | char *, char ***); | |
52 | ||
53 | static char *find_toplevel_char (char *s, char c); | |
54 | ||
55 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], | |
56 | int, int, char ***); | |
57 | ||
58 | /* Helper functions. */ | |
59 | ||
60 | /* While the C++ support is still in flux, issue a possibly helpful hint on | |
61 | using the new command completion feature on single quoted demangled C++ | |
62 | symbols. Remove when loose ends are cleaned up. FIXME -fnf */ | |
63 | ||
64 | static void | |
65 | cplusplus_hint (char *name) | |
66 | { | |
67 | while (*name == '\'') | |
68 | name++; | |
69 | printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name); | |
70 | printf_filtered ("(Note leading single quote.)\n"); | |
71 | } | |
72 | ||
73 | /* Return the number of methods described for TYPE, including the | |
74 | methods from types it derives from. This can't be done in the symbol | |
75 | reader because the type of the baseclass might still be stubbed | |
76 | when the definition of the derived class is parsed. */ | |
77 | ||
78 | static int | |
79 | total_number_of_methods (struct type *type) | |
80 | { | |
81 | int n; | |
82 | int count; | |
83 | ||
84 | CHECK_TYPEDEF (type); | |
85 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
86 | return 0; | |
87 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
88 | ||
89 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
90 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
91 | ||
92 | return count; | |
93 | } | |
94 | ||
95 | /* Recursive helper function for decode_line_1. | |
96 | Look for methods named NAME in type T. | |
97 | Return number of matches. | |
98 | Put matches in SYM_ARR, which should have been allocated with | |
99 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
100 | Note that this function is g++ specific. */ | |
101 | ||
102 | static int | |
103 | find_methods (struct type *t, char *name, struct symbol **sym_arr) | |
104 | { | |
105 | int i1 = 0; | |
106 | int ibase; | |
50641945 FN |
107 | char *class_name = type_name_no_tag (t); |
108 | ||
109 | /* Ignore this class if it doesn't have a name. This is ugly, but | |
110 | unless we figure out how to get the physname without the name of | |
111 | the class, then the loop can't do any good. */ | |
112 | if (class_name | |
8bd1f2c6 JB |
113 | && (lookup_symbol (class_name, (struct block *) NULL, |
114 | STRUCT_NAMESPACE, (int *) NULL, | |
115 | (struct symtab **) NULL))) | |
50641945 FN |
116 | { |
117 | int method_counter; | |
118 | ||
8bd1f2c6 | 119 | CHECK_TYPEDEF (t); |
50641945 FN |
120 | |
121 | /* Loop over each method name. At this level, all overloads of a name | |
122 | are counted as a single name. There is an inner loop which loops over | |
123 | each overload. */ | |
124 | ||
125 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
126 | method_counter >= 0; | |
127 | --method_counter) | |
128 | { | |
129 | int field_counter; | |
130 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); | |
131 | char dem_opname[64]; | |
132 | ||
133 | if (strncmp (method_name, "__", 2) == 0 || | |
134 | strncmp (method_name, "op", 2) == 0 || | |
135 | strncmp (method_name, "type", 4) == 0) | |
136 | { | |
137 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
138 | method_name = dem_opname; | |
139 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
140 | method_name = dem_opname; | |
141 | } | |
142 | ||
13b57657 | 143 | if (strcmp_iw (name, method_name) == 0) |
50641945 FN |
144 | /* Find all the overloaded methods with that name. */ |
145 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
146 | field_counter >= 0; | |
147 | --field_counter) | |
148 | { | |
149 | struct fn_field *f; | |
150 | char *phys_name; | |
151 | ||
152 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
153 | ||
154 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
155 | { | |
156 | char *tmp_name; | |
157 | ||
158 | tmp_name = gdb_mangle_name (t, | |
159 | method_counter, | |
160 | field_counter); | |
161 | phys_name = alloca (strlen (tmp_name) + 1); | |
162 | strcpy (phys_name, tmp_name); | |
b8c9b27d | 163 | xfree (tmp_name); |
50641945 FN |
164 | } |
165 | else | |
166 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
8bd1f2c6 | 167 | |
50641945 FN |
168 | /* Destructor is handled by caller, dont add it to the list */ |
169 | if (DESTRUCTOR_PREFIX_P (phys_name)) | |
170 | continue; | |
171 | ||
172 | sym_arr[i1] = lookup_symbol (phys_name, | |
173 | NULL, VAR_NAMESPACE, | |
174 | (int *) NULL, | |
175 | (struct symtab **) NULL); | |
176 | if (sym_arr[i1]) | |
177 | i1++; | |
178 | else | |
179 | { | |
180 | /* This error message gets printed, but the method | |
181 | still seems to be found | |
182 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
183 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
184 | language_cplus, | |
185 | DMGL_PARAMS | DMGL_ANSI); | |
186 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
187 | */ | |
188 | } | |
189 | } | |
190 | } | |
191 | } | |
192 | ||
193 | /* Only search baseclasses if there is no match yet, since names in | |
194 | derived classes override those in baseclasses. | |
195 | ||
196 | FIXME: The above is not true; it is only true of member functions | |
197 | if they have the same number of arguments (??? - section 13.1 of the | |
198 | ARM says the function members are not in the same scope but doesn't | |
199 | really spell out the rules in a way I understand. In any case, if | |
200 | the number of arguments differ this is a case in which we can overload | |
201 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
202 | rather than hiding in this case). */ | |
203 | ||
204 | if (i1 == 0) | |
205 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
206 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); | |
207 | ||
208 | return i1; | |
209 | } | |
210 | ||
211 | /* Helper function for decode_line_1. | |
212 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
213 | the SAL has a symtab. | |
214 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
215 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
216 | line spec is `filename:linenum'. */ | |
217 | ||
218 | static void | |
219 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
220 | char ***canonical) | |
221 | { | |
222 | char **canonical_arr; | |
223 | char *canonical_name; | |
224 | char *filename; | |
225 | struct symtab *s = sal->symtab; | |
226 | ||
227 | if (s == (struct symtab *) NULL | |
228 | || s->filename == (char *) NULL | |
229 | || canonical == (char ***) NULL) | |
230 | return; | |
231 | ||
232 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
233 | *canonical = canonical_arr; | |
234 | ||
235 | filename = s->filename; | |
236 | if (symname != NULL) | |
237 | { | |
238 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
239 | sprintf (canonical_name, "%s:%s", filename, symname); | |
240 | } | |
241 | else | |
242 | { | |
243 | canonical_name = xmalloc (strlen (filename) + 30); | |
244 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
245 | } | |
246 | canonical_arr[0] = canonical_name; | |
247 | } | |
248 | ||
249 | ||
250 | ||
251 | /* Find an instance of the character C in the string S that is outside | |
252 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
253 | strings. */ | |
254 | static char * | |
255 | find_toplevel_char (char *s, char c) | |
256 | { | |
257 | int quoted = 0; /* zero if we're not in quotes; | |
258 | '"' if we're in a double-quoted string; | |
259 | '\'' if we're in a single-quoted string. */ | |
260 | int depth = 0; /* number of unclosed parens we've seen */ | |
261 | char *scan; | |
262 | ||
263 | for (scan = s; *scan; scan++) | |
264 | { | |
265 | if (quoted) | |
266 | { | |
267 | if (*scan == quoted) | |
268 | quoted = 0; | |
269 | else if (*scan == '\\' && *(scan + 1)) | |
270 | scan++; | |
271 | } | |
272 | else if (*scan == c && ! quoted && depth == 0) | |
273 | return scan; | |
274 | else if (*scan == '"' || *scan == '\'') | |
275 | quoted = *scan; | |
276 | else if (*scan == '(') | |
277 | depth++; | |
278 | else if (*scan == ')' && depth > 0) | |
279 | depth--; | |
280 | } | |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
285 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to | |
286 | operate on (ask user if necessary). | |
287 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
288 | as canonical line specs there. */ | |
289 | ||
290 | static struct symtabs_and_lines | |
291 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
292 | char ***canonical) | |
293 | { | |
294 | struct symtabs_and_lines values, return_values; | |
295 | char *args, *arg1; | |
296 | int i; | |
297 | char *prompt; | |
298 | char *symname; | |
299 | struct cleanup *old_chain; | |
300 | char **canonical_arr = (char **) NULL; | |
301 | ||
302 | values.sals = (struct symtab_and_line *) | |
303 | alloca (nelts * sizeof (struct symtab_and_line)); | |
304 | return_values.sals = (struct symtab_and_line *) | |
305 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 306 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
307 | |
308 | if (canonical) | |
309 | { | |
310 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 311 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
312 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
313 | *canonical = canonical_arr; | |
314 | } | |
315 | ||
316 | i = 0; | |
317 | printf_unfiltered ("[0] cancel\n[1] all\n"); | |
318 | while (i < nelts) | |
319 | { | |
320 | INIT_SAL (&return_values.sals[i]); /* initialize to zeroes */ | |
321 | INIT_SAL (&values.sals[i]); | |
322 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) | |
323 | { | |
324 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); | |
325 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
326 | (i + 2), | |
327 | SYMBOL_SOURCE_NAME (sym_arr[i]), | |
328 | values.sals[i].symtab->filename, | |
329 | values.sals[i].line); | |
330 | } | |
331 | else | |
332 | printf_unfiltered ("?HERE\n"); | |
333 | i++; | |
334 | } | |
335 | ||
336 | if ((prompt = getenv ("PS2")) == NULL) | |
337 | { | |
338 | prompt = "> "; | |
339 | } | |
340 | args = command_line_input (prompt, 0, "overload-choice"); | |
341 | ||
342 | if (args == 0 || *args == 0) | |
343 | error_no_arg ("one or more choice numbers"); | |
344 | ||
345 | i = 0; | |
346 | while (*args) | |
347 | { | |
348 | int num; | |
349 | ||
350 | arg1 = args; | |
351 | while (*arg1 >= '0' && *arg1 <= '9') | |
352 | arg1++; | |
353 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
354 | error ("Arguments must be choice numbers."); | |
355 | ||
356 | num = atoi (args); | |
357 | ||
358 | if (num == 0) | |
359 | error ("canceled"); | |
360 | else if (num == 1) | |
361 | { | |
362 | if (canonical_arr) | |
363 | { | |
364 | for (i = 0; i < nelts; i++) | |
365 | { | |
366 | if (canonical_arr[i] == NULL) | |
367 | { | |
368 | symname = SYMBOL_NAME (sym_arr[i]); | |
369 | canonical_arr[i] = savestring (symname, strlen (symname)); | |
370 | } | |
371 | } | |
372 | } | |
373 | memcpy (return_values.sals, values.sals, | |
374 | (nelts * sizeof (struct symtab_and_line))); | |
375 | return_values.nelts = nelts; | |
376 | discard_cleanups (old_chain); | |
377 | return return_values; | |
378 | } | |
379 | ||
380 | if (num >= nelts + 2) | |
381 | { | |
382 | printf_unfiltered ("No choice number %d.\n", num); | |
383 | } | |
384 | else | |
385 | { | |
386 | num -= 2; | |
387 | if (values.sals[num].pc) | |
388 | { | |
389 | if (canonical_arr) | |
390 | { | |
391 | symname = SYMBOL_NAME (sym_arr[num]); | |
b8c9b27d | 392 | make_cleanup (xfree, symname); |
50641945 FN |
393 | canonical_arr[i] = savestring (symname, strlen (symname)); |
394 | } | |
395 | return_values.sals[i++] = values.sals[num]; | |
396 | values.sals[num].pc = 0; | |
397 | } | |
398 | else | |
399 | { | |
400 | printf_unfiltered ("duplicate request for %d ignored.\n", num); | |
401 | } | |
402 | } | |
403 | ||
404 | args = arg1; | |
405 | while (*args == ' ' || *args == '\t') | |
406 | args++; | |
407 | } | |
408 | return_values.nelts = i; | |
409 | discard_cleanups (old_chain); | |
410 | return return_values; | |
411 | } | |
412 | \f | |
413 | /* The parser of linespec itself. */ | |
414 | ||
415 | /* Parse a string that specifies a line number. | |
416 | Pass the address of a char * variable; that variable will be | |
417 | advanced over the characters actually parsed. | |
418 | ||
419 | The string can be: | |
420 | ||
421 | LINENUM -- that line number in current file. PC returned is 0. | |
422 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
423 | FUNCTION -- line number of openbrace of that function. | |
424 | PC returned is the start of the function. | |
425 | VARIABLE -- line number of definition of that variable. | |
426 | PC returned is 0. | |
427 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
428 | *EXPR -- line in which address EXPR appears. | |
429 | ||
430 | This may all be followed by an "if EXPR", which we ignore. | |
431 | ||
432 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
433 | ||
434 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
435 | of real code inside a function when a function is specified, and it is | |
436 | not OK to specify a variable or type to get its line number. | |
437 | ||
438 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
439 | It defaults to current_source_symtab. | |
440 | DEFAULT_LINE specifies the line number to use for relative | |
441 | line numbers (that start with signs). Defaults to current_source_line. | |
442 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
443 | line specs there if necessary. Currently overloaded member functions and | |
444 | line numbers or static functions without a filename yield a canonical | |
445 | line spec. The array and the line spec strings are allocated on the heap, | |
446 | it is the callers responsibility to free them. | |
447 | ||
448 | Note that it is possible to return zero for the symtab | |
449 | if no file is validly specified. Callers must check that. | |
450 | Also, the line number returned may be invalid. */ | |
451 | ||
452 | /* We allow single quotes in various places. This is a hideous | |
453 | kludge, which exists because the completer can't yet deal with the | |
454 | lack of single quotes. FIXME: write a linespec_completer which we | |
455 | can use as appropriate instead of make_symbol_completion_list. */ | |
456 | ||
457 | struct symtabs_and_lines | |
458 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
459 | int default_line, char ***canonical) | |
460 | { | |
461 | struct symtabs_and_lines values; | |
462 | #ifdef HPPA_COMPILER_BUG | |
463 | /* FIXME: The native HP 9000/700 compiler has a bug which appears | |
464 | when optimizing this file with target i960-vxworks. I haven't | |
465 | been able to construct a simple test case. The problem is that | |
466 | in the second call to SKIP_PROLOGUE below, the compiler somehow | |
467 | does not realize that the statement val = find_pc_line (...) will | |
468 | change the values of the fields of val. It extracts the elements | |
469 | into registers at the top of the block, and does not update the | |
470 | registers after the call to find_pc_line. You can check this by | |
471 | inserting a printf at the end of find_pc_line to show what values | |
472 | it is returning for val.pc and val.end and another printf after | |
473 | the call to see what values the function actually got (remember, | |
474 | this is compiling with cc -O, with this patch removed). You can | |
475 | also examine the assembly listing: search for the second call to | |
476 | skip_prologue; the LDO statement before the next call to | |
477 | find_pc_line loads the address of the structure which | |
478 | find_pc_line will return; if there is a LDW just before the LDO, | |
479 | which fetches an element of the structure, then the compiler | |
480 | still has the bug. | |
481 | ||
482 | Setting val to volatile avoids the problem. We must undef | |
483 | volatile, because the HPPA native compiler does not define | |
484 | __STDC__, although it does understand volatile, and so volatile | |
485 | will have been defined away in defs.h. */ | |
486 | #undef volatile | |
487 | volatile struct symtab_and_line val; | |
488 | #define volatile /*nothing */ | |
489 | #else | |
490 | struct symtab_and_line val; | |
491 | #endif | |
492 | register char *p, *p1; | |
493 | char *q, *pp, *ii, *p2; | |
494 | #if 0 | |
495 | char *q1; | |
496 | #endif | |
497 | register struct symtab *s; | |
498 | ||
499 | register struct symbol *sym; | |
500 | /* The symtab that SYM was found in. */ | |
501 | struct symtab *sym_symtab; | |
502 | ||
503 | register CORE_ADDR pc; | |
504 | register struct minimal_symbol *msymbol; | |
505 | char *copy; | |
506 | struct symbol *sym_class; | |
507 | int i1; | |
508 | int is_quoted; | |
509 | int is_quote_enclosed; | |
510 | int has_parens; | |
511 | int has_if = 0; | |
512 | int has_comma = 0; | |
513 | struct symbol **sym_arr; | |
514 | struct type *t; | |
515 | char *saved_arg = *argptr; | |
516 | extern char *gdb_completer_quote_characters; | |
517 | ||
518 | INIT_SAL (&val); /* initialize to zeroes */ | |
519 | ||
520 | /* Defaults have defaults. */ | |
521 | ||
522 | if (default_symtab == 0) | |
523 | { | |
524 | default_symtab = current_source_symtab; | |
525 | default_line = current_source_line; | |
526 | } | |
527 | ||
528 | /* See if arg is *PC */ | |
529 | ||
530 | if (**argptr == '*') | |
531 | { | |
532 | (*argptr)++; | |
533 | pc = parse_and_eval_address_1 (argptr); | |
534 | ||
535 | values.sals = (struct symtab_and_line *) | |
536 | xmalloc (sizeof (struct symtab_and_line)); | |
537 | ||
538 | values.nelts = 1; | |
539 | values.sals[0] = find_pc_line (pc, 0); | |
540 | values.sals[0].pc = pc; | |
541 | values.sals[0].section = find_pc_overlay (pc); | |
542 | ||
543 | return values; | |
544 | } | |
545 | ||
546 | /* 'has_if' is for the syntax: | |
547 | * (gdb) break foo if (a==b) | |
548 | */ | |
549 | if ((ii = strstr (*argptr, " if ")) != NULL || | |
550 | (ii = strstr (*argptr, "\tif ")) != NULL || | |
551 | (ii = strstr (*argptr, " if\t")) != NULL || | |
552 | (ii = strstr (*argptr, "\tif\t")) != NULL || | |
553 | (ii = strstr (*argptr, " if(")) != NULL || | |
554 | (ii = strstr (*argptr, "\tif( ")) != NULL) | |
555 | has_if = 1; | |
556 | /* Temporarily zap out "if (condition)" to not | |
557 | * confuse the parenthesis-checking code below. | |
558 | * This is undone below. Do not change ii!! | |
559 | */ | |
560 | if (has_if) | |
561 | { | |
562 | *ii = '\0'; | |
563 | } | |
564 | ||
565 | /* Set various flags. | |
566 | * 'has_parens' is important for overload checking, where | |
567 | * we allow things like: | |
568 | * (gdb) break c::f(int) | |
569 | */ | |
570 | ||
571 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
572 | ||
573 | is_quoted = (**argptr | |
c5f0f3d0 FN |
574 | && strchr (get_gdb_completer_quote_characters (), |
575 | **argptr) != NULL); | |
50641945 FN |
576 | |
577 | has_parens = ((pp = strchr (*argptr, '(')) != NULL | |
578 | && (pp = strrchr (pp, ')')) != NULL); | |
579 | ||
580 | /* Now that we're safely past the has_parens check, | |
581 | * put back " if (condition)" so outer layers can see it | |
582 | */ | |
583 | if (has_if) | |
584 | *ii = ' '; | |
585 | ||
586 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
587 | and we must isolate the first half. Outer layers will call again later | |
588 | for the second half. | |
589 | ||
590 | Don't count commas that appear in argument lists of overloaded | |
591 | functions, or in quoted strings. It's stupid to go to this much | |
592 | trouble when the rest of the function is such an obvious roach hotel. */ | |
593 | ii = find_toplevel_char (*argptr, ','); | |
594 | has_comma = (ii != 0); | |
595 | ||
596 | /* Temporarily zap out second half to not | |
597 | * confuse the code below. | |
598 | * This is undone below. Do not change ii!! | |
599 | */ | |
600 | if (has_comma) | |
601 | { | |
602 | *ii = '\0'; | |
603 | } | |
604 | ||
605 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
606 | /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ | |
607 | /* Look for ':', but ignore inside of <> */ | |
608 | ||
609 | s = NULL; | |
610 | p = *argptr; | |
77cd5909 | 611 | if (p[0] == '"') |
50641945 FN |
612 | { |
613 | is_quote_enclosed = 1; | |
91c1720e | 614 | (*argptr)++; |
77cd5909 | 615 | p++; |
50641945 FN |
616 | } |
617 | else | |
618 | is_quote_enclosed = 0; | |
619 | for (; *p; p++) | |
620 | { | |
621 | if (p[0] == '<') | |
622 | { | |
623 | char *temp_end = find_template_name_end (p); | |
624 | if (!temp_end) | |
625 | error ("malformed template specification in command"); | |
626 | p = temp_end; | |
627 | } | |
628 | /* Check for the end of the first half of the linespec. End of line, | |
629 | a tab, a double colon or the last single colon, or a space. But | |
630 | if enclosed in double quotes we do not break on enclosed spaces */ | |
631 | if (!*p | |
632 | || p[0] == '\t' | |
633 | || ((p[0] == ':') | |
634 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
635 | || ((p[0] == ' ') && !is_quote_enclosed)) | |
636 | break; | |
637 | if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */ | |
638 | { | |
639 | /* Find the *last* '.', since the others are package qualifiers. */ | |
640 | for (p1 = p; *p1; p1++) | |
641 | { | |
642 | if (*p1 == '.') | |
643 | p = p1; | |
644 | } | |
645 | break; | |
646 | } | |
647 | } | |
648 | while (p[0] == ' ' || p[0] == '\t') | |
649 | p++; | |
650 | ||
651 | /* if the closing double quote was left at the end, remove it */ | |
652 | if (is_quote_enclosed) | |
653 | { | |
77cd5909 | 654 | char *closing_quote = strchr (p - 1, '"'); |
50641945 FN |
655 | if (closing_quote && closing_quote[1] == '\0') |
656 | *closing_quote = '\0'; | |
657 | } | |
658 | ||
659 | /* Now that we've safely parsed the first half, | |
660 | * put back ',' so outer layers can see it | |
661 | */ | |
662 | if (has_comma) | |
663 | *ii = ','; | |
664 | ||
665 | if ((p[0] == ':' || p[0] == '.') && !has_parens) | |
666 | { | |
667 | /* C++ */ | |
668 | /* ... or Java */ | |
669 | if (is_quoted) | |
670 | *argptr = *argptr + 1; | |
671 | if (p[0] == '.' || p[1] == ':') | |
672 | { | |
673 | char *saved_arg2 = *argptr; | |
674 | char *temp_end; | |
675 | /* First check for "global" namespace specification, | |
676 | of the form "::foo". If found, skip over the colons | |
677 | and jump to normal symbol processing */ | |
678 | if (p[0] == ':' | |
679 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
680 | saved_arg2 += 2; | |
681 | ||
682 | /* We have what looks like a class or namespace | |
683 | scope specification (A::B), possibly with many | |
684 | levels of namespaces or classes (A::B::C::D). | |
685 | ||
686 | Some versions of the HP ANSI C++ compiler (as also possibly | |
687 | other compilers) generate class/function/member names with | |
688 | embedded double-colons if they are inside namespaces. To | |
689 | handle this, we loop a few times, considering larger and | |
690 | larger prefixes of the string as though they were single | |
691 | symbols. So, if the initially supplied string is | |
692 | A::B::C::D::foo, we have to look up "A", then "A::B", | |
693 | then "A::B::C", then "A::B::C::D", and finally | |
694 | "A::B::C::D::foo" as single, monolithic symbols, because | |
695 | A, B, C or D may be namespaces. | |
696 | ||
697 | Note that namespaces can nest only inside other | |
698 | namespaces, and not inside classes. So we need only | |
699 | consider *prefixes* of the string; there is no need to look up | |
700 | "B::C" separately as a symbol in the previous example. */ | |
701 | ||
702 | p2 = p; /* save for restart */ | |
703 | while (1) | |
704 | { | |
705 | /* Extract the class name. */ | |
706 | p1 = p; | |
707 | while (p != *argptr && p[-1] == ' ') | |
708 | --p; | |
709 | copy = (char *) alloca (p - *argptr + 1); | |
710 | memcpy (copy, *argptr, p - *argptr); | |
711 | copy[p - *argptr] = 0; | |
712 | ||
713 | /* Discard the class name from the arg. */ | |
714 | p = p1 + (p1[0] == ':' ? 2 : 1); | |
715 | while (*p == ' ' || *p == '\t') | |
716 | p++; | |
717 | *argptr = p; | |
718 | ||
719 | sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, | |
720 | (struct symtab **) NULL); | |
721 | ||
722 | if (sym_class && | |
723 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
724 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
725 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
726 | { | |
727 | /* Arg token is not digits => try it as a function name | |
728 | Find the next token(everything up to end or next blank). */ | |
729 | if (**argptr | |
c5f0f3d0 FN |
730 | && strchr (get_gdb_completer_quote_characters (), |
731 | **argptr) != NULL) | |
50641945 FN |
732 | { |
733 | p = skip_quoted (*argptr); | |
734 | *argptr = *argptr + 1; | |
735 | } | |
736 | else | |
737 | { | |
738 | p = *argptr; | |
739 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
740 | p++; | |
741 | } | |
742 | /* | |
743 | q = operator_chars (*argptr, &q1); | |
744 | if (q1 - q) | |
745 | { | |
746 | char *opname; | |
747 | char *tmp = alloca (q1 - q + 1); | |
748 | memcpy (tmp, q, q1 - q); | |
749 | tmp[q1 - q] = '\0'; | |
750 | opname = cplus_mangle_opname (tmp, DMGL_ANSI); | |
751 | if (opname == NULL) | |
752 | { | |
753 | error_begin (); | |
754 | printf_filtered ("no mangling for \"%s\"\n", tmp); | |
755 | cplusplus_hint (saved_arg); | |
756 | return_to_top_level (RETURN_ERROR); | |
757 | } | |
758 | copy = (char*) alloca (3 + strlen(opname)); | |
759 | sprintf (copy, "__%s", opname); | |
760 | p = q1; | |
761 | } | |
762 | else | |
763 | */ | |
764 | { | |
765 | copy = (char *) alloca (p - *argptr + 1); | |
766 | memcpy (copy, *argptr, p - *argptr); | |
767 | copy[p - *argptr] = '\0'; | |
768 | if (p != *argptr | |
769 | && copy[p - *argptr - 1] | |
c5f0f3d0 | 770 | && strchr (get_gdb_completer_quote_characters (), |
50641945 FN |
771 | copy[p - *argptr - 1]) != NULL) |
772 | copy[p - *argptr - 1] = '\0'; | |
773 | } | |
774 | ||
775 | /* no line number may be specified */ | |
776 | while (*p == ' ' || *p == '\t') | |
777 | p++; | |
778 | *argptr = p; | |
779 | ||
780 | sym = 0; | |
781 | i1 = 0; /* counter for the symbol array */ | |
782 | sym_arr = (struct symbol **) alloca (total_number_of_methods (t) | |
783 | * sizeof (struct symbol *)); | |
784 | ||
785 | if (destructor_name_p (copy, t)) | |
786 | { | |
787 | /* Destructors are a special case. */ | |
788 | int m_index, f_index; | |
789 | ||
790 | if (get_destructor_fn_field (t, &m_index, &f_index)) | |
791 | { | |
792 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); | |
793 | ||
794 | sym_arr[i1] = | |
795 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), | |
796 | NULL, VAR_NAMESPACE, (int *) NULL, | |
797 | (struct symtab **) NULL); | |
798 | if (sym_arr[i1]) | |
799 | i1++; | |
800 | } | |
801 | } | |
802 | else | |
803 | i1 = find_methods (t, copy, sym_arr); | |
804 | if (i1 == 1) | |
805 | { | |
806 | /* There is exactly one field with that name. */ | |
807 | sym = sym_arr[0]; | |
808 | ||
809 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
810 | { | |
811 | values.sals = (struct symtab_and_line *) | |
812 | xmalloc (sizeof (struct symtab_and_line)); | |
813 | values.nelts = 1; | |
814 | values.sals[0] = find_function_start_sal (sym, | |
815 | funfirstline); | |
816 | } | |
817 | else | |
818 | { | |
819 | values.nelts = 0; | |
820 | } | |
821 | return values; | |
822 | } | |
823 | if (i1 > 0) | |
824 | { | |
825 | /* There is more than one field with that name | |
826 | (overloaded). Ask the user which one to use. */ | |
827 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
828 | } | |
829 | else | |
830 | { | |
831 | char *tmp; | |
832 | ||
833 | if (OPNAME_PREFIX_P (copy)) | |
834 | { | |
835 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
836 | strcpy (tmp, "operator "); | |
837 | strcat (tmp, copy + 3); | |
838 | } | |
839 | else | |
840 | tmp = copy; | |
841 | error_begin (); | |
842 | if (tmp[0] == '~') | |
843 | printf_filtered | |
844 | ("the class `%s' does not have destructor defined\n", | |
845 | SYMBOL_SOURCE_NAME (sym_class)); | |
846 | else | |
847 | printf_filtered | |
848 | ("the class %s does not have any method named %s\n", | |
849 | SYMBOL_SOURCE_NAME (sym_class), tmp); | |
850 | cplusplus_hint (saved_arg); | |
851 | return_to_top_level (RETURN_ERROR); | |
852 | } | |
853 | } | |
854 | ||
855 | /* Move pointer up to next possible class/namespace token */ | |
856 | p = p2 + 1; /* restart with old value +1 */ | |
857 | /* Move pointer ahead to next double-colon */ | |
858 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) | |
859 | { | |
860 | if (p[0] == '<') | |
861 | { | |
862 | temp_end = find_template_name_end (p); | |
863 | if (!temp_end) | |
864 | error ("malformed template specification in command"); | |
865 | p = temp_end; | |
866 | } | |
867 | else if ((p[0] == ':') && (p[1] == ':')) | |
868 | break; /* found double-colon */ | |
869 | else | |
870 | p++; | |
871 | } | |
872 | ||
873 | if (*p != ':') | |
874 | break; /* out of the while (1) */ | |
875 | ||
876 | p2 = p; /* save restart for next time around */ | |
877 | *argptr = saved_arg2; /* restore argptr */ | |
878 | } /* while (1) */ | |
879 | ||
880 | /* Last chance attempt -- check entire name as a symbol */ | |
881 | /* Use "copy" in preparation for jumping out of this block, | |
882 | to be consistent with usage following the jump target */ | |
883 | copy = (char *) alloca (p - saved_arg2 + 1); | |
884 | memcpy (copy, saved_arg2, p - saved_arg2); | |
885 | /* Note: if is_quoted should be true, we snuff out quote here anyway */ | |
886 | copy[p - saved_arg2] = '\000'; | |
887 | /* Set argptr to skip over the name */ | |
888 | *argptr = (*p == '\'') ? p + 1 : p; | |
889 | /* Look up entire name */ | |
890 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
891 | s = (struct symtab *) 0; | |
892 | /* Prepare to jump: restore the " if (condition)" so outer layers see it */ | |
893 | /* Symbol was found --> jump to normal symbol processing. | |
894 | Code following "symbol_found" expects "copy" to have the | |
895 | symbol name, "sym" to have the symbol pointer, "s" to be | |
896 | a specified file's symtab, and sym_symtab to be the symbol's | |
897 | symtab. */ | |
898 | /* By jumping there we avoid falling through the FILE:LINE and | |
899 | FILE:FUNC processing stuff below */ | |
900 | if (sym) | |
901 | goto symbol_found; | |
902 | ||
903 | /* Couldn't find any interpretation as classes/namespaces, so give up */ | |
904 | error_begin (); | |
905 | /* The quotes are important if copy is empty. */ | |
906 | printf_filtered | |
907 | ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy); | |
908 | cplusplus_hint (saved_arg); | |
909 | return_to_top_level (RETURN_ERROR); | |
910 | } | |
911 | /* end of C++ */ | |
912 | ||
913 | ||
914 | /* Extract the file name. */ | |
915 | p1 = p; | |
916 | while (p != *argptr && p[-1] == ' ') | |
917 | --p; | |
918 | if ((*p == '"') && is_quote_enclosed) | |
919 | --p; | |
920 | copy = (char *) alloca (p - *argptr + 1); | |
921 | if ((**argptr == '"') && is_quote_enclosed) | |
922 | { | |
923 | memcpy (copy, *argptr + 1, p - *argptr - 1); | |
924 | /* It may have the ending quote right after the file name */ | |
925 | if (copy[p - *argptr - 2] == '"') | |
926 | copy[p - *argptr - 2] = 0; | |
927 | else | |
928 | copy[p - *argptr - 1] = 0; | |
929 | } | |
930 | else | |
931 | { | |
932 | memcpy (copy, *argptr, p - *argptr); | |
933 | copy[p - *argptr] = 0; | |
934 | } | |
935 | ||
936 | /* Find that file's data. */ | |
937 | s = lookup_symtab (copy); | |
938 | if (s == 0) | |
939 | { | |
940 | if (!have_full_symbols () && !have_partial_symbols ()) | |
e85428fc | 941 | error ("No symbol table is loaded. Use the \"file\" command."); |
50641945 FN |
942 | error ("No source file named %s.", copy); |
943 | } | |
944 | ||
945 | /* Discard the file name from the arg. */ | |
946 | p = p1 + 1; | |
947 | while (*p == ' ' || *p == '\t') | |
948 | p++; | |
949 | *argptr = p; | |
950 | } | |
951 | #if 0 | |
952 | /* No one really seems to know why this was added. It certainly | |
953 | breaks the command line, though, whenever the passed | |
954 | name is of the form ClassName::Method. This bit of code | |
955 | singles out the class name, and if funfirstline is set (for | |
956 | example, you are setting a breakpoint at this function), | |
957 | you get an error. This did not occur with earlier | |
958 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
959 | else | |
960 | { | |
961 | /* Check if what we have till now is a symbol name */ | |
962 | ||
963 | /* We may be looking at a template instantiation such | |
964 | as "foo<int>". Check here whether we know about it, | |
965 | instead of falling through to the code below which | |
966 | handles ordinary function names, because that code | |
967 | doesn't like seeing '<' and '>' in a name -- the | |
968 | skip_quoted call doesn't go past them. So see if we | |
969 | can figure it out right now. */ | |
970 | ||
971 | copy = (char *) alloca (p - *argptr + 1); | |
972 | memcpy (copy, *argptr, p - *argptr); | |
973 | copy[p - *argptr] = '\000'; | |
974 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
975 | if (sym) | |
976 | { | |
977 | /* Yes, we have a symbol; jump to symbol processing */ | |
978 | /* Code after symbol_found expects S, SYM_SYMTAB, SYM, | |
979 | and COPY to be set correctly */ | |
980 | *argptr = (*p == '\'') ? p + 1 : p; | |
981 | s = (struct symtab *) 0; | |
982 | goto symbol_found; | |
983 | } | |
984 | /* Otherwise fall out from here and go to file/line spec | |
985 | processing, etc. */ | |
986 | } | |
987 | #endif | |
988 | ||
989 | /* S is specified file's symtab, or 0 if no file specified. | |
990 | arg no longer contains the file name. */ | |
991 | ||
992 | /* Check whether arg is all digits (and sign) */ | |
993 | ||
994 | q = *argptr; | |
995 | if (*q == '-' || *q == '+') | |
996 | q++; | |
997 | while (*q >= '0' && *q <= '9') | |
998 | q++; | |
999 | ||
1000 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
1001 | { | |
1002 | /* We found a token consisting of all digits -- at least one digit. */ | |
1003 | enum sign | |
1004 | { | |
1005 | none, plus, minus | |
1006 | } | |
1007 | sign = none; | |
1008 | ||
1009 | /* We might need a canonical line spec if no file was specified. */ | |
1010 | int need_canonical = (s == 0) ? 1 : 0; | |
1011 | ||
1012 | /* This is where we need to make sure that we have good defaults. | |
1013 | We must guarantee that this section of code is never executed | |
1014 | when we are called with just a function name, since | |
1015 | select_source_symtab calls us with such an argument */ | |
1016 | ||
1017 | if (s == 0 && default_symtab == 0) | |
1018 | { | |
1019 | select_source_symtab (0); | |
1020 | default_symtab = current_source_symtab; | |
1021 | default_line = current_source_line; | |
1022 | } | |
1023 | ||
1024 | if (**argptr == '+') | |
1025 | sign = plus, (*argptr)++; | |
1026 | else if (**argptr == '-') | |
1027 | sign = minus, (*argptr)++; | |
1028 | val.line = atoi (*argptr); | |
1029 | switch (sign) | |
1030 | { | |
1031 | case plus: | |
1032 | if (q == *argptr) | |
1033 | val.line = 5; | |
1034 | if (s == 0) | |
1035 | val.line = default_line + val.line; | |
1036 | break; | |
1037 | case minus: | |
1038 | if (q == *argptr) | |
1039 | val.line = 15; | |
1040 | if (s == 0) | |
1041 | val.line = default_line - val.line; | |
1042 | else | |
1043 | val.line = 1; | |
1044 | break; | |
1045 | case none: | |
1046 | break; /* No need to adjust val.line. */ | |
1047 | } | |
1048 | ||
1049 | while (*q == ' ' || *q == '\t') | |
1050 | q++; | |
1051 | *argptr = q; | |
1052 | if (s == 0) | |
1053 | s = default_symtab; | |
1054 | ||
1055 | /* It is possible that this source file has more than one symtab, | |
1056 | and that the new line number specification has moved us from the | |
1057 | default (in s) to a new one. */ | |
1058 | val.symtab = find_line_symtab (s, val.line, NULL, NULL); | |
1059 | if (val.symtab == 0) | |
1060 | val.symtab = s; | |
1061 | ||
1062 | val.pc = 0; | |
1063 | values.sals = (struct symtab_and_line *) | |
1064 | xmalloc (sizeof (struct symtab_and_line)); | |
1065 | values.sals[0] = val; | |
1066 | values.nelts = 1; | |
1067 | if (need_canonical) | |
1068 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1069 | return values; | |
1070 | } | |
1071 | ||
1072 | /* Arg token is not digits => try it as a variable name | |
1073 | Find the next token (everything up to end or next whitespace). */ | |
1074 | ||
1075 | if (**argptr == '$') /* May be a convenience variable */ | |
1076 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */ | |
1077 | else if (is_quoted) | |
1078 | { | |
1079 | p = skip_quoted (*argptr); | |
1080 | if (p[-1] != '\'') | |
1081 | error ("Unmatched single quote."); | |
1082 | } | |
1083 | else if (has_parens) | |
1084 | { | |
1085 | p = pp + 1; | |
1086 | } | |
1087 | else | |
1088 | { | |
1089 | p = skip_quoted (*argptr); | |
1090 | } | |
1091 | ||
50641945 FN |
1092 | copy = (char *) alloca (p - *argptr + 1); |
1093 | memcpy (copy, *argptr, p - *argptr); | |
1094 | copy[p - *argptr] = '\0'; | |
1095 | if (p != *argptr | |
1096 | && copy[0] | |
1097 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 1098 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
1099 | { |
1100 | copy[p - *argptr - 1] = '\0'; | |
1101 | copy++; | |
1102 | } | |
1103 | while (*p == ' ' || *p == '\t') | |
1104 | p++; | |
1105 | *argptr = p; | |
1106 | ||
1107 | /* If it starts with $: may be a legitimate variable or routine name | |
1108 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
1109 | be history value, or it may be a convenience variable */ | |
1110 | ||
1111 | if (*copy == '$') | |
1112 | { | |
1113 | value_ptr valx; | |
1114 | int index = 0; | |
1115 | int need_canonical = 0; | |
1116 | ||
1117 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1118 | while (*p >= '0' && *p <= '9') | |
1119 | p++; | |
1120 | if (!*p) /* reached end of token without hitting non-digit */ | |
1121 | { | |
1122 | /* We have a value history reference */ | |
1123 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); | |
1124 | valx = access_value_history ((copy[1] == '$') ? -index : index); | |
1125 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1126 | error ("History values used in line specs must have integer values."); | |
1127 | } | |
1128 | else | |
1129 | { | |
1130 | /* Not all digits -- may be user variable/function or a | |
1131 | convenience variable */ | |
1132 | ||
1133 | /* Look up entire name as a symbol first */ | |
1134 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
1135 | s = (struct symtab *) 0; | |
1136 | need_canonical = 1; | |
1137 | /* Symbol was found --> jump to normal symbol processing. | |
1138 | Code following "symbol_found" expects "copy" to have the | |
1139 | symbol name, "sym" to have the symbol pointer, "s" to be | |
1140 | a specified file's symtab, and sym_symtab to be the symbol's | |
1141 | symtab. */ | |
1142 | if (sym) | |
1143 | goto symbol_found; | |
1144 | ||
1145 | /* If symbol was not found, look in minimal symbol tables */ | |
1146 | msymbol = lookup_minimal_symbol (copy, 0, 0); | |
1147 | /* Min symbol was found --> jump to minsym processing. */ | |
1148 | if (msymbol) | |
1149 | goto minimal_symbol_found; | |
1150 | ||
1151 | /* Not a user variable or function -- must be convenience variable */ | |
1152 | need_canonical = (s == 0) ? 1 : 0; | |
1153 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); | |
1154 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1155 | error ("Convenience variables used in line specs must have integer values."); | |
1156 | } | |
1157 | ||
1158 | /* Either history value or convenience value from above, in valx */ | |
1159 | val.symtab = s ? s : default_symtab; | |
1160 | val.line = value_as_long (valx); | |
1161 | val.pc = 0; | |
1162 | ||
1163 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
1164 | values.sals[0] = val; | |
1165 | values.nelts = 1; | |
1166 | ||
1167 | if (need_canonical) | |
1168 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1169 | ||
1170 | return values; | |
1171 | } | |
1172 | ||
1173 | ||
1174 | /* Look up that token as a variable. | |
1175 | If file specified, use that file's per-file block to start with. */ | |
1176 | ||
1177 | sym = lookup_symbol (copy, | |
1178 | (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) | |
1179 | : get_selected_block ()), | |
1180 | VAR_NAMESPACE, 0, &sym_symtab); | |
1181 | ||
1182 | symbol_found: /* We also jump here from inside the C++ class/namespace | |
1183 | code on finding a symbol of the form "A::B::C" */ | |
1184 | ||
1185 | if (sym != NULL) | |
1186 | { | |
1187 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1188 | { | |
1189 | /* Arg is the name of a function */ | |
1190 | values.sals = (struct symtab_and_line *) | |
1191 | xmalloc (sizeof (struct symtab_and_line)); | |
1192 | values.sals[0] = find_function_start_sal (sym, funfirstline); | |
1193 | values.nelts = 1; | |
1194 | ||
1195 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1196 | the line containing the parameters or thereabouts, not | |
1197 | the first line of code. */ | |
1198 | ||
1199 | /* We might need a canonical line spec if it is a static | |
1200 | function. */ | |
1201 | if (s == 0) | |
1202 | { | |
1203 | struct blockvector *bv = BLOCKVECTOR (sym_symtab); | |
1204 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1205 | if (lookup_block_symbol (b, copy, VAR_NAMESPACE) != NULL) | |
1206 | build_canonical_line_spec (values.sals, copy, canonical); | |
1207 | } | |
1208 | return values; | |
1209 | } | |
1210 | else | |
1211 | { | |
1212 | if (funfirstline) | |
1213 | error ("\"%s\" is not a function", copy); | |
1214 | else if (SYMBOL_LINE (sym) != 0) | |
1215 | { | |
1216 | /* We know its line number. */ | |
1217 | values.sals = (struct symtab_and_line *) | |
1218 | xmalloc (sizeof (struct symtab_and_line)); | |
1219 | values.nelts = 1; | |
1220 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
1221 | values.sals[0].symtab = sym_symtab; | |
1222 | values.sals[0].line = SYMBOL_LINE (sym); | |
1223 | return values; | |
1224 | } | |
1225 | else | |
1226 | /* This can happen if it is compiled with a compiler which doesn't | |
1227 | put out line numbers for variables. */ | |
1228 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1229 | and return? For example, "info line foo" could print | |
1230 | the address. */ | |
1231 | error ("Line number not known for symbol \"%s\"", copy); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); | |
1236 | ||
1237 | minimal_symbol_found: /* We also jump here from the case for variables | |
1238 | that begin with '$' */ | |
1239 | ||
1240 | if (msymbol != NULL) | |
1241 | { | |
1242 | values.sals = (struct symtab_and_line *) | |
1243 | xmalloc (sizeof (struct symtab_and_line)); | |
1244 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
1245 | (struct sec *) 0, 0); | |
1246 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); | |
1247 | if (funfirstline) | |
1248 | { | |
1249 | values.sals[0].pc += FUNCTION_START_OFFSET; | |
1250 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); | |
1251 | } | |
1252 | values.nelts = 1; | |
1253 | return values; | |
1254 | } | |
1255 | ||
1256 | if (!have_full_symbols () && | |
1257 | !have_partial_symbols () && !have_minimal_symbols ()) | |
e85428fc | 1258 | error ("No symbol table is loaded. Use the \"file\" command."); |
50641945 FN |
1259 | |
1260 | error ("Function \"%s\" not defined.", copy); | |
1261 | return values; /* for lint */ | |
1262 | } |