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50641945 FN |
1 | /* Parser for linespec for the GNU debugger, GDB. |
2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "symtab.h" | |
c5f0f3d0 FN |
24 | #include "frame.h" |
25 | #include "command.h" | |
50641945 FN |
26 | #include "symfile.h" |
27 | #include "objfiles.h" | |
50641945 | 28 | #include "demangle.h" |
c5f0f3d0 FN |
29 | #include "value.h" |
30 | #include "completer.h" | |
50641945 FN |
31 | |
32 | /* Prototype for one function in parser-defs.h, | |
33 | instead of including that entire file. */ | |
34 | ||
35 | extern char *find_template_name_end (char *); | |
36 | ||
37 | /* We share this one with symtab.c, but it is not exported widely. */ | |
38 | ||
39 | extern char *operator_chars (char *, char **); | |
40 | ||
50641945 FN |
41 | /* Prototypes for local functions */ |
42 | ||
43 | static void cplusplus_hint (char *name); | |
44 | ||
45 | static int total_number_of_methods (struct type *type); | |
46 | ||
47 | static int find_methods (struct type *, char *, struct symbol **); | |
48 | ||
49 | static void build_canonical_line_spec (struct symtab_and_line *, | |
50 | char *, char ***); | |
51 | ||
52 | static char *find_toplevel_char (char *s, char c); | |
53 | ||
54 | static struct symtabs_and_lines decode_line_2 (struct symbol *[], | |
55 | int, int, char ***); | |
56 | ||
57 | /* Helper functions. */ | |
58 | ||
59 | /* While the C++ support is still in flux, issue a possibly helpful hint on | |
60 | using the new command completion feature on single quoted demangled C++ | |
61 | symbols. Remove when loose ends are cleaned up. FIXME -fnf */ | |
62 | ||
63 | static void | |
64 | cplusplus_hint (char *name) | |
65 | { | |
66 | while (*name == '\'') | |
67 | name++; | |
68 | printf_filtered ("Hint: try '%s<TAB> or '%s<ESC-?>\n", name, name); | |
69 | printf_filtered ("(Note leading single quote.)\n"); | |
70 | } | |
71 | ||
72 | /* Return the number of methods described for TYPE, including the | |
73 | methods from types it derives from. This can't be done in the symbol | |
74 | reader because the type of the baseclass might still be stubbed | |
75 | when the definition of the derived class is parsed. */ | |
76 | ||
77 | static int | |
78 | total_number_of_methods (struct type *type) | |
79 | { | |
80 | int n; | |
81 | int count; | |
82 | ||
83 | CHECK_TYPEDEF (type); | |
84 | if (TYPE_CPLUS_SPECIFIC (type) == NULL) | |
85 | return 0; | |
86 | count = TYPE_NFN_FIELDS_TOTAL (type); | |
87 | ||
88 | for (n = 0; n < TYPE_N_BASECLASSES (type); n++) | |
89 | count += total_number_of_methods (TYPE_BASECLASS (type, n)); | |
90 | ||
91 | return count; | |
92 | } | |
93 | ||
94 | /* Recursive helper function for decode_line_1. | |
95 | Look for methods named NAME in type T. | |
96 | Return number of matches. | |
97 | Put matches in SYM_ARR, which should have been allocated with | |
98 | a size of total_number_of_methods (T) * sizeof (struct symbol *). | |
99 | Note that this function is g++ specific. */ | |
100 | ||
101 | static int | |
102 | find_methods (struct type *t, char *name, struct symbol **sym_arr) | |
103 | { | |
104 | int i1 = 0; | |
105 | int ibase; | |
106 | struct symbol *sym_class; | |
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 | |
113 | && (sym_class = lookup_symbol (class_name, | |
114 | (struct block *) NULL, | |
115 | STRUCT_NAMESPACE, | |
116 | (int *) NULL, | |
117 | (struct symtab **) NULL))) | |
118 | { | |
119 | int method_counter; | |
120 | ||
121 | /* FIXME: Shouldn't this just be CHECK_TYPEDEF (t)? */ | |
122 | t = SYMBOL_TYPE (sym_class); | |
123 | ||
124 | /* Loop over each method name. At this level, all overloads of a name | |
125 | are counted as a single name. There is an inner loop which loops over | |
126 | each overload. */ | |
127 | ||
128 | for (method_counter = TYPE_NFN_FIELDS (t) - 1; | |
129 | method_counter >= 0; | |
130 | --method_counter) | |
131 | { | |
132 | int field_counter; | |
133 | char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter); | |
134 | char dem_opname[64]; | |
135 | ||
136 | if (strncmp (method_name, "__", 2) == 0 || | |
137 | strncmp (method_name, "op", 2) == 0 || | |
138 | strncmp (method_name, "type", 4) == 0) | |
139 | { | |
140 | if (cplus_demangle_opname (method_name, dem_opname, DMGL_ANSI)) | |
141 | method_name = dem_opname; | |
142 | else if (cplus_demangle_opname (method_name, dem_opname, 0)) | |
143 | method_name = dem_opname; | |
144 | } | |
145 | ||
146 | if (STREQ (name, method_name)) | |
147 | /* Find all the overloaded methods with that name. */ | |
148 | for (field_counter = TYPE_FN_FIELDLIST_LENGTH (t, method_counter) - 1; | |
149 | field_counter >= 0; | |
150 | --field_counter) | |
151 | { | |
152 | struct fn_field *f; | |
153 | char *phys_name; | |
154 | ||
155 | f = TYPE_FN_FIELDLIST1 (t, method_counter); | |
156 | ||
157 | if (TYPE_FN_FIELD_STUB (f, field_counter)) | |
158 | { | |
159 | char *tmp_name; | |
160 | ||
161 | tmp_name = gdb_mangle_name (t, | |
162 | method_counter, | |
163 | field_counter); | |
164 | phys_name = alloca (strlen (tmp_name) + 1); | |
165 | strcpy (phys_name, tmp_name); | |
b8c9b27d | 166 | xfree (tmp_name); |
50641945 FN |
167 | } |
168 | else | |
169 | phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter); | |
170 | ||
171 | /* Destructor is handled by caller, dont add it to the list */ | |
172 | if (DESTRUCTOR_PREFIX_P (phys_name)) | |
173 | continue; | |
174 | ||
175 | sym_arr[i1] = lookup_symbol (phys_name, | |
176 | NULL, VAR_NAMESPACE, | |
177 | (int *) NULL, | |
178 | (struct symtab **) NULL); | |
179 | if (sym_arr[i1]) | |
180 | i1++; | |
181 | else | |
182 | { | |
183 | /* This error message gets printed, but the method | |
184 | still seems to be found | |
185 | fputs_filtered("(Cannot find method ", gdb_stdout); | |
186 | fprintf_symbol_filtered (gdb_stdout, phys_name, | |
187 | language_cplus, | |
188 | DMGL_PARAMS | DMGL_ANSI); | |
189 | fputs_filtered(" - possibly inlined.)\n", gdb_stdout); | |
190 | */ | |
191 | } | |
192 | } | |
193 | } | |
194 | } | |
195 | ||
196 | /* Only search baseclasses if there is no match yet, since names in | |
197 | derived classes override those in baseclasses. | |
198 | ||
199 | FIXME: The above is not true; it is only true of member functions | |
200 | if they have the same number of arguments (??? - section 13.1 of the | |
201 | ARM says the function members are not in the same scope but doesn't | |
202 | really spell out the rules in a way I understand. In any case, if | |
203 | the number of arguments differ this is a case in which we can overload | |
204 | rather than hiding without any problem, and gcc 2.4.5 does overload | |
205 | rather than hiding in this case). */ | |
206 | ||
207 | if (i1 == 0) | |
208 | for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++) | |
209 | i1 += find_methods (TYPE_BASECLASS (t, ibase), name, sym_arr + i1); | |
210 | ||
211 | return i1; | |
212 | } | |
213 | ||
214 | /* Helper function for decode_line_1. | |
215 | Build a canonical line spec in CANONICAL if it is non-NULL and if | |
216 | the SAL has a symtab. | |
217 | If SYMNAME is non-NULL the canonical line spec is `filename:symname'. | |
218 | If SYMNAME is NULL the line number from SAL is used and the canonical | |
219 | line spec is `filename:linenum'. */ | |
220 | ||
221 | static void | |
222 | build_canonical_line_spec (struct symtab_and_line *sal, char *symname, | |
223 | char ***canonical) | |
224 | { | |
225 | char **canonical_arr; | |
226 | char *canonical_name; | |
227 | char *filename; | |
228 | struct symtab *s = sal->symtab; | |
229 | ||
230 | if (s == (struct symtab *) NULL | |
231 | || s->filename == (char *) NULL | |
232 | || canonical == (char ***) NULL) | |
233 | return; | |
234 | ||
235 | canonical_arr = (char **) xmalloc (sizeof (char *)); | |
236 | *canonical = canonical_arr; | |
237 | ||
238 | filename = s->filename; | |
239 | if (symname != NULL) | |
240 | { | |
241 | canonical_name = xmalloc (strlen (filename) + strlen (symname) + 2); | |
242 | sprintf (canonical_name, "%s:%s", filename, symname); | |
243 | } | |
244 | else | |
245 | { | |
246 | canonical_name = xmalloc (strlen (filename) + 30); | |
247 | sprintf (canonical_name, "%s:%d", filename, sal->line); | |
248 | } | |
249 | canonical_arr[0] = canonical_name; | |
250 | } | |
251 | ||
252 | ||
253 | ||
254 | /* Find an instance of the character C in the string S that is outside | |
255 | of all parenthesis pairs, single-quoted strings, and double-quoted | |
256 | strings. */ | |
257 | static char * | |
258 | find_toplevel_char (char *s, char c) | |
259 | { | |
260 | int quoted = 0; /* zero if we're not in quotes; | |
261 | '"' if we're in a double-quoted string; | |
262 | '\'' if we're in a single-quoted string. */ | |
263 | int depth = 0; /* number of unclosed parens we've seen */ | |
264 | char *scan; | |
265 | ||
266 | for (scan = s; *scan; scan++) | |
267 | { | |
268 | if (quoted) | |
269 | { | |
270 | if (*scan == quoted) | |
271 | quoted = 0; | |
272 | else if (*scan == '\\' && *(scan + 1)) | |
273 | scan++; | |
274 | } | |
275 | else if (*scan == c && ! quoted && depth == 0) | |
276 | return scan; | |
277 | else if (*scan == '"' || *scan == '\'') | |
278 | quoted = *scan; | |
279 | else if (*scan == '(') | |
280 | depth++; | |
281 | else if (*scan == ')' && depth > 0) | |
282 | depth--; | |
283 | } | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | /* Given a list of NELTS symbols in SYM_ARR, return a list of lines to | |
289 | operate on (ask user if necessary). | |
290 | If CANONICAL is non-NULL return a corresponding array of mangled names | |
291 | as canonical line specs there. */ | |
292 | ||
293 | static struct symtabs_and_lines | |
294 | decode_line_2 (struct symbol *sym_arr[], int nelts, int funfirstline, | |
295 | char ***canonical) | |
296 | { | |
297 | struct symtabs_and_lines values, return_values; | |
298 | char *args, *arg1; | |
299 | int i; | |
300 | char *prompt; | |
301 | char *symname; | |
302 | struct cleanup *old_chain; | |
303 | char **canonical_arr = (char **) NULL; | |
304 | ||
305 | values.sals = (struct symtab_and_line *) | |
306 | alloca (nelts * sizeof (struct symtab_and_line)); | |
307 | return_values.sals = (struct symtab_and_line *) | |
308 | xmalloc (nelts * sizeof (struct symtab_and_line)); | |
b8c9b27d | 309 | old_chain = make_cleanup (xfree, return_values.sals); |
50641945 FN |
310 | |
311 | if (canonical) | |
312 | { | |
313 | canonical_arr = (char **) xmalloc (nelts * sizeof (char *)); | |
b8c9b27d | 314 | make_cleanup (xfree, canonical_arr); |
50641945 FN |
315 | memset (canonical_arr, 0, nelts * sizeof (char *)); |
316 | *canonical = canonical_arr; | |
317 | } | |
318 | ||
319 | i = 0; | |
320 | printf_unfiltered ("[0] cancel\n[1] all\n"); | |
321 | while (i < nelts) | |
322 | { | |
323 | INIT_SAL (&return_values.sals[i]); /* initialize to zeroes */ | |
324 | INIT_SAL (&values.sals[i]); | |
325 | if (sym_arr[i] && SYMBOL_CLASS (sym_arr[i]) == LOC_BLOCK) | |
326 | { | |
327 | values.sals[i] = find_function_start_sal (sym_arr[i], funfirstline); | |
328 | printf_unfiltered ("[%d] %s at %s:%d\n", | |
329 | (i + 2), | |
330 | SYMBOL_SOURCE_NAME (sym_arr[i]), | |
331 | values.sals[i].symtab->filename, | |
332 | values.sals[i].line); | |
333 | } | |
334 | else | |
335 | printf_unfiltered ("?HERE\n"); | |
336 | i++; | |
337 | } | |
338 | ||
339 | if ((prompt = getenv ("PS2")) == NULL) | |
340 | { | |
341 | prompt = "> "; | |
342 | } | |
343 | args = command_line_input (prompt, 0, "overload-choice"); | |
344 | ||
345 | if (args == 0 || *args == 0) | |
346 | error_no_arg ("one or more choice numbers"); | |
347 | ||
348 | i = 0; | |
349 | while (*args) | |
350 | { | |
351 | int num; | |
352 | ||
353 | arg1 = args; | |
354 | while (*arg1 >= '0' && *arg1 <= '9') | |
355 | arg1++; | |
356 | if (*arg1 && *arg1 != ' ' && *arg1 != '\t') | |
357 | error ("Arguments must be choice numbers."); | |
358 | ||
359 | num = atoi (args); | |
360 | ||
361 | if (num == 0) | |
362 | error ("canceled"); | |
363 | else if (num == 1) | |
364 | { | |
365 | if (canonical_arr) | |
366 | { | |
367 | for (i = 0; i < nelts; i++) | |
368 | { | |
369 | if (canonical_arr[i] == NULL) | |
370 | { | |
371 | symname = SYMBOL_NAME (sym_arr[i]); | |
372 | canonical_arr[i] = savestring (symname, strlen (symname)); | |
373 | } | |
374 | } | |
375 | } | |
376 | memcpy (return_values.sals, values.sals, | |
377 | (nelts * sizeof (struct symtab_and_line))); | |
378 | return_values.nelts = nelts; | |
379 | discard_cleanups (old_chain); | |
380 | return return_values; | |
381 | } | |
382 | ||
383 | if (num >= nelts + 2) | |
384 | { | |
385 | printf_unfiltered ("No choice number %d.\n", num); | |
386 | } | |
387 | else | |
388 | { | |
389 | num -= 2; | |
390 | if (values.sals[num].pc) | |
391 | { | |
392 | if (canonical_arr) | |
393 | { | |
394 | symname = SYMBOL_NAME (sym_arr[num]); | |
b8c9b27d | 395 | make_cleanup (xfree, symname); |
50641945 FN |
396 | canonical_arr[i] = savestring (symname, strlen (symname)); |
397 | } | |
398 | return_values.sals[i++] = values.sals[num]; | |
399 | values.sals[num].pc = 0; | |
400 | } | |
401 | else | |
402 | { | |
403 | printf_unfiltered ("duplicate request for %d ignored.\n", num); | |
404 | } | |
405 | } | |
406 | ||
407 | args = arg1; | |
408 | while (*args == ' ' || *args == '\t') | |
409 | args++; | |
410 | } | |
411 | return_values.nelts = i; | |
412 | discard_cleanups (old_chain); | |
413 | return return_values; | |
414 | } | |
415 | \f | |
416 | /* The parser of linespec itself. */ | |
417 | ||
418 | /* Parse a string that specifies a line number. | |
419 | Pass the address of a char * variable; that variable will be | |
420 | advanced over the characters actually parsed. | |
421 | ||
422 | The string can be: | |
423 | ||
424 | LINENUM -- that line number in current file. PC returned is 0. | |
425 | FILE:LINENUM -- that line in that file. PC returned is 0. | |
426 | FUNCTION -- line number of openbrace of that function. | |
427 | PC returned is the start of the function. | |
428 | VARIABLE -- line number of definition of that variable. | |
429 | PC returned is 0. | |
430 | FILE:FUNCTION -- likewise, but prefer functions in that file. | |
431 | *EXPR -- line in which address EXPR appears. | |
432 | ||
433 | This may all be followed by an "if EXPR", which we ignore. | |
434 | ||
435 | FUNCTION may be an undebuggable function found in minimal symbol table. | |
436 | ||
437 | If the argument FUNFIRSTLINE is nonzero, we want the first line | |
438 | of real code inside a function when a function is specified, and it is | |
439 | not OK to specify a variable or type to get its line number. | |
440 | ||
441 | DEFAULT_SYMTAB specifies the file to use if none is specified. | |
442 | It defaults to current_source_symtab. | |
443 | DEFAULT_LINE specifies the line number to use for relative | |
444 | line numbers (that start with signs). Defaults to current_source_line. | |
445 | If CANONICAL is non-NULL, store an array of strings containing the canonical | |
446 | line specs there if necessary. Currently overloaded member functions and | |
447 | line numbers or static functions without a filename yield a canonical | |
448 | line spec. The array and the line spec strings are allocated on the heap, | |
449 | it is the callers responsibility to free them. | |
450 | ||
451 | Note that it is possible to return zero for the symtab | |
452 | if no file is validly specified. Callers must check that. | |
453 | Also, the line number returned may be invalid. */ | |
454 | ||
455 | /* We allow single quotes in various places. This is a hideous | |
456 | kludge, which exists because the completer can't yet deal with the | |
457 | lack of single quotes. FIXME: write a linespec_completer which we | |
458 | can use as appropriate instead of make_symbol_completion_list. */ | |
459 | ||
460 | struct symtabs_and_lines | |
461 | decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab, | |
462 | int default_line, char ***canonical) | |
463 | { | |
464 | struct symtabs_and_lines values; | |
465 | #ifdef HPPA_COMPILER_BUG | |
466 | /* FIXME: The native HP 9000/700 compiler has a bug which appears | |
467 | when optimizing this file with target i960-vxworks. I haven't | |
468 | been able to construct a simple test case. The problem is that | |
469 | in the second call to SKIP_PROLOGUE below, the compiler somehow | |
470 | does not realize that the statement val = find_pc_line (...) will | |
471 | change the values of the fields of val. It extracts the elements | |
472 | into registers at the top of the block, and does not update the | |
473 | registers after the call to find_pc_line. You can check this by | |
474 | inserting a printf at the end of find_pc_line to show what values | |
475 | it is returning for val.pc and val.end and another printf after | |
476 | the call to see what values the function actually got (remember, | |
477 | this is compiling with cc -O, with this patch removed). You can | |
478 | also examine the assembly listing: search for the second call to | |
479 | skip_prologue; the LDO statement before the next call to | |
480 | find_pc_line loads the address of the structure which | |
481 | find_pc_line will return; if there is a LDW just before the LDO, | |
482 | which fetches an element of the structure, then the compiler | |
483 | still has the bug. | |
484 | ||
485 | Setting val to volatile avoids the problem. We must undef | |
486 | volatile, because the HPPA native compiler does not define | |
487 | __STDC__, although it does understand volatile, and so volatile | |
488 | will have been defined away in defs.h. */ | |
489 | #undef volatile | |
490 | volatile struct symtab_and_line val; | |
491 | #define volatile /*nothing */ | |
492 | #else | |
493 | struct symtab_and_line val; | |
494 | #endif | |
495 | register char *p, *p1; | |
496 | char *q, *pp, *ii, *p2; | |
497 | #if 0 | |
498 | char *q1; | |
499 | #endif | |
500 | register struct symtab *s; | |
501 | ||
502 | register struct symbol *sym; | |
503 | /* The symtab that SYM was found in. */ | |
504 | struct symtab *sym_symtab; | |
505 | ||
506 | register CORE_ADDR pc; | |
507 | register struct minimal_symbol *msymbol; | |
508 | char *copy; | |
509 | struct symbol *sym_class; | |
510 | int i1; | |
511 | int is_quoted; | |
512 | int is_quote_enclosed; | |
513 | int has_parens; | |
514 | int has_if = 0; | |
515 | int has_comma = 0; | |
516 | struct symbol **sym_arr; | |
517 | struct type *t; | |
518 | char *saved_arg = *argptr; | |
519 | extern char *gdb_completer_quote_characters; | |
520 | ||
521 | INIT_SAL (&val); /* initialize to zeroes */ | |
522 | ||
523 | /* Defaults have defaults. */ | |
524 | ||
525 | if (default_symtab == 0) | |
526 | { | |
527 | default_symtab = current_source_symtab; | |
528 | default_line = current_source_line; | |
529 | } | |
530 | ||
531 | /* See if arg is *PC */ | |
532 | ||
533 | if (**argptr == '*') | |
534 | { | |
535 | (*argptr)++; | |
536 | pc = parse_and_eval_address_1 (argptr); | |
537 | ||
538 | values.sals = (struct symtab_and_line *) | |
539 | xmalloc (sizeof (struct symtab_and_line)); | |
540 | ||
541 | values.nelts = 1; | |
542 | values.sals[0] = find_pc_line (pc, 0); | |
543 | values.sals[0].pc = pc; | |
544 | values.sals[0].section = find_pc_overlay (pc); | |
545 | ||
546 | return values; | |
547 | } | |
548 | ||
549 | /* 'has_if' is for the syntax: | |
550 | * (gdb) break foo if (a==b) | |
551 | */ | |
552 | if ((ii = strstr (*argptr, " if ")) != NULL || | |
553 | (ii = strstr (*argptr, "\tif ")) != NULL || | |
554 | (ii = strstr (*argptr, " if\t")) != NULL || | |
555 | (ii = strstr (*argptr, "\tif\t")) != NULL || | |
556 | (ii = strstr (*argptr, " if(")) != NULL || | |
557 | (ii = strstr (*argptr, "\tif( ")) != NULL) | |
558 | has_if = 1; | |
559 | /* Temporarily zap out "if (condition)" to not | |
560 | * confuse the parenthesis-checking code below. | |
561 | * This is undone below. Do not change ii!! | |
562 | */ | |
563 | if (has_if) | |
564 | { | |
565 | *ii = '\0'; | |
566 | } | |
567 | ||
568 | /* Set various flags. | |
569 | * 'has_parens' is important for overload checking, where | |
570 | * we allow things like: | |
571 | * (gdb) break c::f(int) | |
572 | */ | |
573 | ||
574 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
575 | ||
576 | is_quoted = (**argptr | |
c5f0f3d0 FN |
577 | && strchr (get_gdb_completer_quote_characters (), |
578 | **argptr) != NULL); | |
50641945 FN |
579 | |
580 | has_parens = ((pp = strchr (*argptr, '(')) != NULL | |
581 | && (pp = strrchr (pp, ')')) != NULL); | |
582 | ||
583 | /* Now that we're safely past the has_parens check, | |
584 | * put back " if (condition)" so outer layers can see it | |
585 | */ | |
586 | if (has_if) | |
587 | *ii = ' '; | |
588 | ||
589 | /* Maybe we were called with a line range FILENAME:LINENUM,FILENAME:LINENUM | |
590 | and we must isolate the first half. Outer layers will call again later | |
591 | for the second half. | |
592 | ||
593 | Don't count commas that appear in argument lists of overloaded | |
594 | functions, or in quoted strings. It's stupid to go to this much | |
595 | trouble when the rest of the function is such an obvious roach hotel. */ | |
596 | ii = find_toplevel_char (*argptr, ','); | |
597 | has_comma = (ii != 0); | |
598 | ||
599 | /* Temporarily zap out second half to not | |
600 | * confuse the code below. | |
601 | * This is undone below. Do not change ii!! | |
602 | */ | |
603 | if (has_comma) | |
604 | { | |
605 | *ii = '\0'; | |
606 | } | |
607 | ||
608 | /* Maybe arg is FILE : LINENUM or FILE : FUNCTION */ | |
609 | /* May also be CLASS::MEMBER, or NAMESPACE::NAME */ | |
610 | /* Look for ':', but ignore inside of <> */ | |
611 | ||
612 | s = NULL; | |
613 | p = *argptr; | |
614 | if (p[0] == '"') | |
615 | { | |
616 | is_quote_enclosed = 1; | |
617 | p++; | |
618 | } | |
619 | else | |
620 | is_quote_enclosed = 0; | |
621 | for (; *p; p++) | |
622 | { | |
623 | if (p[0] == '<') | |
624 | { | |
625 | char *temp_end = find_template_name_end (p); | |
626 | if (!temp_end) | |
627 | error ("malformed template specification in command"); | |
628 | p = temp_end; | |
629 | } | |
630 | /* Check for the end of the first half of the linespec. End of line, | |
631 | a tab, a double colon or the last single colon, or a space. But | |
632 | if enclosed in double quotes we do not break on enclosed spaces */ | |
633 | if (!*p | |
634 | || p[0] == '\t' | |
635 | || ((p[0] == ':') | |
636 | && ((p[1] == ':') || (strchr (p + 1, ':') == NULL))) | |
637 | || ((p[0] == ' ') && !is_quote_enclosed)) | |
638 | break; | |
639 | if (p[0] == '.' && strchr (p, ':') == NULL) /* Java qualified method. */ | |
640 | { | |
641 | /* Find the *last* '.', since the others are package qualifiers. */ | |
642 | for (p1 = p; *p1; p1++) | |
643 | { | |
644 | if (*p1 == '.') | |
645 | p = p1; | |
646 | } | |
647 | break; | |
648 | } | |
649 | } | |
650 | while (p[0] == ' ' || p[0] == '\t') | |
651 | p++; | |
652 | ||
653 | /* if the closing double quote was left at the end, remove it */ | |
654 | if (is_quote_enclosed) | |
655 | { | |
656 | char *closing_quote = strchr (p, '"'); | |
657 | if (closing_quote && closing_quote[1] == '\0') | |
658 | *closing_quote = '\0'; | |
659 | } | |
660 | ||
661 | /* Now that we've safely parsed the first half, | |
662 | * put back ',' so outer layers can see it | |
663 | */ | |
664 | if (has_comma) | |
665 | *ii = ','; | |
666 | ||
667 | if ((p[0] == ':' || p[0] == '.') && !has_parens) | |
668 | { | |
669 | /* C++ */ | |
670 | /* ... or Java */ | |
671 | if (is_quoted) | |
672 | *argptr = *argptr + 1; | |
673 | if (p[0] == '.' || p[1] == ':') | |
674 | { | |
675 | char *saved_arg2 = *argptr; | |
676 | char *temp_end; | |
677 | /* First check for "global" namespace specification, | |
678 | of the form "::foo". If found, skip over the colons | |
679 | and jump to normal symbol processing */ | |
680 | if (p[0] == ':' | |
681 | && ((*argptr == p) || (p[-1] == ' ') || (p[-1] == '\t'))) | |
682 | saved_arg2 += 2; | |
683 | ||
684 | /* We have what looks like a class or namespace | |
685 | scope specification (A::B), possibly with many | |
686 | levels of namespaces or classes (A::B::C::D). | |
687 | ||
688 | Some versions of the HP ANSI C++ compiler (as also possibly | |
689 | other compilers) generate class/function/member names with | |
690 | embedded double-colons if they are inside namespaces. To | |
691 | handle this, we loop a few times, considering larger and | |
692 | larger prefixes of the string as though they were single | |
693 | symbols. So, if the initially supplied string is | |
694 | A::B::C::D::foo, we have to look up "A", then "A::B", | |
695 | then "A::B::C", then "A::B::C::D", and finally | |
696 | "A::B::C::D::foo" as single, monolithic symbols, because | |
697 | A, B, C or D may be namespaces. | |
698 | ||
699 | Note that namespaces can nest only inside other | |
700 | namespaces, and not inside classes. So we need only | |
701 | consider *prefixes* of the string; there is no need to look up | |
702 | "B::C" separately as a symbol in the previous example. */ | |
703 | ||
704 | p2 = p; /* save for restart */ | |
705 | while (1) | |
706 | { | |
707 | /* Extract the class name. */ | |
708 | p1 = p; | |
709 | while (p != *argptr && p[-1] == ' ') | |
710 | --p; | |
711 | copy = (char *) alloca (p - *argptr + 1); | |
712 | memcpy (copy, *argptr, p - *argptr); | |
713 | copy[p - *argptr] = 0; | |
714 | ||
715 | /* Discard the class name from the arg. */ | |
716 | p = p1 + (p1[0] == ':' ? 2 : 1); | |
717 | while (*p == ' ' || *p == '\t') | |
718 | p++; | |
719 | *argptr = p; | |
720 | ||
721 | sym_class = lookup_symbol (copy, 0, STRUCT_NAMESPACE, 0, | |
722 | (struct symtab **) NULL); | |
723 | ||
724 | if (sym_class && | |
725 | (t = check_typedef (SYMBOL_TYPE (sym_class)), | |
726 | (TYPE_CODE (t) == TYPE_CODE_STRUCT | |
727 | || TYPE_CODE (t) == TYPE_CODE_UNION))) | |
728 | { | |
729 | /* Arg token is not digits => try it as a function name | |
730 | Find the next token(everything up to end or next blank). */ | |
731 | if (**argptr | |
c5f0f3d0 FN |
732 | && strchr (get_gdb_completer_quote_characters (), |
733 | **argptr) != NULL) | |
50641945 FN |
734 | { |
735 | p = skip_quoted (*argptr); | |
736 | *argptr = *argptr + 1; | |
737 | } | |
738 | else | |
739 | { | |
740 | p = *argptr; | |
741 | while (*p && *p != ' ' && *p != '\t' && *p != ',' && *p != ':') | |
742 | p++; | |
743 | } | |
744 | /* | |
745 | q = operator_chars (*argptr, &q1); | |
746 | if (q1 - q) | |
747 | { | |
748 | char *opname; | |
749 | char *tmp = alloca (q1 - q + 1); | |
750 | memcpy (tmp, q, q1 - q); | |
751 | tmp[q1 - q] = '\0'; | |
752 | opname = cplus_mangle_opname (tmp, DMGL_ANSI); | |
753 | if (opname == NULL) | |
754 | { | |
755 | error_begin (); | |
756 | printf_filtered ("no mangling for \"%s\"\n", tmp); | |
757 | cplusplus_hint (saved_arg); | |
758 | return_to_top_level (RETURN_ERROR); | |
759 | } | |
760 | copy = (char*) alloca (3 + strlen(opname)); | |
761 | sprintf (copy, "__%s", opname); | |
762 | p = q1; | |
763 | } | |
764 | else | |
765 | */ | |
766 | { | |
767 | copy = (char *) alloca (p - *argptr + 1); | |
768 | memcpy (copy, *argptr, p - *argptr); | |
769 | copy[p - *argptr] = '\0'; | |
770 | if (p != *argptr | |
771 | && copy[p - *argptr - 1] | |
c5f0f3d0 | 772 | && strchr (get_gdb_completer_quote_characters (), |
50641945 FN |
773 | copy[p - *argptr - 1]) != NULL) |
774 | copy[p - *argptr - 1] = '\0'; | |
775 | } | |
776 | ||
777 | /* no line number may be specified */ | |
778 | while (*p == ' ' || *p == '\t') | |
779 | p++; | |
780 | *argptr = p; | |
781 | ||
782 | sym = 0; | |
783 | i1 = 0; /* counter for the symbol array */ | |
784 | sym_arr = (struct symbol **) alloca (total_number_of_methods (t) | |
785 | * sizeof (struct symbol *)); | |
786 | ||
787 | if (destructor_name_p (copy, t)) | |
788 | { | |
789 | /* Destructors are a special case. */ | |
790 | int m_index, f_index; | |
791 | ||
792 | if (get_destructor_fn_field (t, &m_index, &f_index)) | |
793 | { | |
794 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, m_index); | |
795 | ||
796 | sym_arr[i1] = | |
797 | lookup_symbol (TYPE_FN_FIELD_PHYSNAME (f, f_index), | |
798 | NULL, VAR_NAMESPACE, (int *) NULL, | |
799 | (struct symtab **) NULL); | |
800 | if (sym_arr[i1]) | |
801 | i1++; | |
802 | } | |
803 | } | |
804 | else | |
805 | i1 = find_methods (t, copy, sym_arr); | |
806 | if (i1 == 1) | |
807 | { | |
808 | /* There is exactly one field with that name. */ | |
809 | sym = sym_arr[0]; | |
810 | ||
811 | if (sym && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
812 | { | |
813 | values.sals = (struct symtab_and_line *) | |
814 | xmalloc (sizeof (struct symtab_and_line)); | |
815 | values.nelts = 1; | |
816 | values.sals[0] = find_function_start_sal (sym, | |
817 | funfirstline); | |
818 | } | |
819 | else | |
820 | { | |
821 | values.nelts = 0; | |
822 | } | |
823 | return values; | |
824 | } | |
825 | if (i1 > 0) | |
826 | { | |
827 | /* There is more than one field with that name | |
828 | (overloaded). Ask the user which one to use. */ | |
829 | return decode_line_2 (sym_arr, i1, funfirstline, canonical); | |
830 | } | |
831 | else | |
832 | { | |
833 | char *tmp; | |
834 | ||
835 | if (OPNAME_PREFIX_P (copy)) | |
836 | { | |
837 | tmp = (char *) alloca (strlen (copy + 3) + 9); | |
838 | strcpy (tmp, "operator "); | |
839 | strcat (tmp, copy + 3); | |
840 | } | |
841 | else | |
842 | tmp = copy; | |
843 | error_begin (); | |
844 | if (tmp[0] == '~') | |
845 | printf_filtered | |
846 | ("the class `%s' does not have destructor defined\n", | |
847 | SYMBOL_SOURCE_NAME (sym_class)); | |
848 | else | |
849 | printf_filtered | |
850 | ("the class %s does not have any method named %s\n", | |
851 | SYMBOL_SOURCE_NAME (sym_class), tmp); | |
852 | cplusplus_hint (saved_arg); | |
853 | return_to_top_level (RETURN_ERROR); | |
854 | } | |
855 | } | |
856 | ||
857 | /* Move pointer up to next possible class/namespace token */ | |
858 | p = p2 + 1; /* restart with old value +1 */ | |
859 | /* Move pointer ahead to next double-colon */ | |
860 | while (*p && (p[0] != ' ') && (p[0] != '\t') && (p[0] != '\'')) | |
861 | { | |
862 | if (p[0] == '<') | |
863 | { | |
864 | temp_end = find_template_name_end (p); | |
865 | if (!temp_end) | |
866 | error ("malformed template specification in command"); | |
867 | p = temp_end; | |
868 | } | |
869 | else if ((p[0] == ':') && (p[1] == ':')) | |
870 | break; /* found double-colon */ | |
871 | else | |
872 | p++; | |
873 | } | |
874 | ||
875 | if (*p != ':') | |
876 | break; /* out of the while (1) */ | |
877 | ||
878 | p2 = p; /* save restart for next time around */ | |
879 | *argptr = saved_arg2; /* restore argptr */ | |
880 | } /* while (1) */ | |
881 | ||
882 | /* Last chance attempt -- check entire name as a symbol */ | |
883 | /* Use "copy" in preparation for jumping out of this block, | |
884 | to be consistent with usage following the jump target */ | |
885 | copy = (char *) alloca (p - saved_arg2 + 1); | |
886 | memcpy (copy, saved_arg2, p - saved_arg2); | |
887 | /* Note: if is_quoted should be true, we snuff out quote here anyway */ | |
888 | copy[p - saved_arg2] = '\000'; | |
889 | /* Set argptr to skip over the name */ | |
890 | *argptr = (*p == '\'') ? p + 1 : p; | |
891 | /* Look up entire name */ | |
892 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
893 | s = (struct symtab *) 0; | |
894 | /* Prepare to jump: restore the " if (condition)" so outer layers see it */ | |
895 | /* Symbol was found --> jump to normal symbol processing. | |
896 | Code following "symbol_found" expects "copy" to have the | |
897 | symbol name, "sym" to have the symbol pointer, "s" to be | |
898 | a specified file's symtab, and sym_symtab to be the symbol's | |
899 | symtab. */ | |
900 | /* By jumping there we avoid falling through the FILE:LINE and | |
901 | FILE:FUNC processing stuff below */ | |
902 | if (sym) | |
903 | goto symbol_found; | |
904 | ||
905 | /* Couldn't find any interpretation as classes/namespaces, so give up */ | |
906 | error_begin (); | |
907 | /* The quotes are important if copy is empty. */ | |
908 | printf_filtered | |
909 | ("Can't find member of namespace, class, struct, or union named \"%s\"\n", copy); | |
910 | cplusplus_hint (saved_arg); | |
911 | return_to_top_level (RETURN_ERROR); | |
912 | } | |
913 | /* end of C++ */ | |
914 | ||
915 | ||
916 | /* Extract the file name. */ | |
917 | p1 = p; | |
918 | while (p != *argptr && p[-1] == ' ') | |
919 | --p; | |
920 | if ((*p == '"') && is_quote_enclosed) | |
921 | --p; | |
922 | copy = (char *) alloca (p - *argptr + 1); | |
923 | if ((**argptr == '"') && is_quote_enclosed) | |
924 | { | |
925 | memcpy (copy, *argptr + 1, p - *argptr - 1); | |
926 | /* It may have the ending quote right after the file name */ | |
927 | if (copy[p - *argptr - 2] == '"') | |
928 | copy[p - *argptr - 2] = 0; | |
929 | else | |
930 | copy[p - *argptr - 1] = 0; | |
931 | } | |
932 | else | |
933 | { | |
934 | memcpy (copy, *argptr, p - *argptr); | |
935 | copy[p - *argptr] = 0; | |
936 | } | |
937 | ||
938 | /* Find that file's data. */ | |
939 | s = lookup_symtab (copy); | |
940 | if (s == 0) | |
941 | { | |
942 | if (!have_full_symbols () && !have_partial_symbols ()) | |
e85428fc | 943 | error ("No symbol table is loaded. Use the \"file\" command."); |
50641945 FN |
944 | error ("No source file named %s.", copy); |
945 | } | |
946 | ||
947 | /* Discard the file name from the arg. */ | |
948 | p = p1 + 1; | |
949 | while (*p == ' ' || *p == '\t') | |
950 | p++; | |
951 | *argptr = p; | |
952 | } | |
953 | #if 0 | |
954 | /* No one really seems to know why this was added. It certainly | |
955 | breaks the command line, though, whenever the passed | |
956 | name is of the form ClassName::Method. This bit of code | |
957 | singles out the class name, and if funfirstline is set (for | |
958 | example, you are setting a breakpoint at this function), | |
959 | you get an error. This did not occur with earlier | |
960 | verions, so I am ifdef'ing this out. 3/29/99 */ | |
961 | else | |
962 | { | |
963 | /* Check if what we have till now is a symbol name */ | |
964 | ||
965 | /* We may be looking at a template instantiation such | |
966 | as "foo<int>". Check here whether we know about it, | |
967 | instead of falling through to the code below which | |
968 | handles ordinary function names, because that code | |
969 | doesn't like seeing '<' and '>' in a name -- the | |
970 | skip_quoted call doesn't go past them. So see if we | |
971 | can figure it out right now. */ | |
972 | ||
973 | copy = (char *) alloca (p - *argptr + 1); | |
974 | memcpy (copy, *argptr, p - *argptr); | |
975 | copy[p - *argptr] = '\000'; | |
976 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
977 | if (sym) | |
978 | { | |
979 | /* Yes, we have a symbol; jump to symbol processing */ | |
980 | /* Code after symbol_found expects S, SYM_SYMTAB, SYM, | |
981 | and COPY to be set correctly */ | |
982 | *argptr = (*p == '\'') ? p + 1 : p; | |
983 | s = (struct symtab *) 0; | |
984 | goto symbol_found; | |
985 | } | |
986 | /* Otherwise fall out from here and go to file/line spec | |
987 | processing, etc. */ | |
988 | } | |
989 | #endif | |
990 | ||
991 | /* S is specified file's symtab, or 0 if no file specified. | |
992 | arg no longer contains the file name. */ | |
993 | ||
994 | /* Check whether arg is all digits (and sign) */ | |
995 | ||
996 | q = *argptr; | |
997 | if (*q == '-' || *q == '+') | |
998 | q++; | |
999 | while (*q >= '0' && *q <= '9') | |
1000 | q++; | |
1001 | ||
1002 | if (q != *argptr && (*q == 0 || *q == ' ' || *q == '\t' || *q == ',')) | |
1003 | { | |
1004 | /* We found a token consisting of all digits -- at least one digit. */ | |
1005 | enum sign | |
1006 | { | |
1007 | none, plus, minus | |
1008 | } | |
1009 | sign = none; | |
1010 | ||
1011 | /* We might need a canonical line spec if no file was specified. */ | |
1012 | int need_canonical = (s == 0) ? 1 : 0; | |
1013 | ||
1014 | /* This is where we need to make sure that we have good defaults. | |
1015 | We must guarantee that this section of code is never executed | |
1016 | when we are called with just a function name, since | |
1017 | select_source_symtab calls us with such an argument */ | |
1018 | ||
1019 | if (s == 0 && default_symtab == 0) | |
1020 | { | |
1021 | select_source_symtab (0); | |
1022 | default_symtab = current_source_symtab; | |
1023 | default_line = current_source_line; | |
1024 | } | |
1025 | ||
1026 | if (**argptr == '+') | |
1027 | sign = plus, (*argptr)++; | |
1028 | else if (**argptr == '-') | |
1029 | sign = minus, (*argptr)++; | |
1030 | val.line = atoi (*argptr); | |
1031 | switch (sign) | |
1032 | { | |
1033 | case plus: | |
1034 | if (q == *argptr) | |
1035 | val.line = 5; | |
1036 | if (s == 0) | |
1037 | val.line = default_line + val.line; | |
1038 | break; | |
1039 | case minus: | |
1040 | if (q == *argptr) | |
1041 | val.line = 15; | |
1042 | if (s == 0) | |
1043 | val.line = default_line - val.line; | |
1044 | else | |
1045 | val.line = 1; | |
1046 | break; | |
1047 | case none: | |
1048 | break; /* No need to adjust val.line. */ | |
1049 | } | |
1050 | ||
1051 | while (*q == ' ' || *q == '\t') | |
1052 | q++; | |
1053 | *argptr = q; | |
1054 | if (s == 0) | |
1055 | s = default_symtab; | |
1056 | ||
1057 | /* It is possible that this source file has more than one symtab, | |
1058 | and that the new line number specification has moved us from the | |
1059 | default (in s) to a new one. */ | |
1060 | val.symtab = find_line_symtab (s, val.line, NULL, NULL); | |
1061 | if (val.symtab == 0) | |
1062 | val.symtab = s; | |
1063 | ||
1064 | val.pc = 0; | |
1065 | values.sals = (struct symtab_and_line *) | |
1066 | xmalloc (sizeof (struct symtab_and_line)); | |
1067 | values.sals[0] = val; | |
1068 | values.nelts = 1; | |
1069 | if (need_canonical) | |
1070 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1071 | return values; | |
1072 | } | |
1073 | ||
1074 | /* Arg token is not digits => try it as a variable name | |
1075 | Find the next token (everything up to end or next whitespace). */ | |
1076 | ||
1077 | if (**argptr == '$') /* May be a convenience variable */ | |
1078 | p = skip_quoted (*argptr + (((*argptr)[1] == '$') ? 2 : 1)); /* One or two $ chars possible */ | |
1079 | else if (is_quoted) | |
1080 | { | |
1081 | p = skip_quoted (*argptr); | |
1082 | if (p[-1] != '\'') | |
1083 | error ("Unmatched single quote."); | |
1084 | } | |
1085 | else if (has_parens) | |
1086 | { | |
1087 | p = pp + 1; | |
1088 | } | |
1089 | else | |
1090 | { | |
1091 | p = skip_quoted (*argptr); | |
1092 | } | |
1093 | ||
1094 | if (is_quote_enclosed && **argptr == '"') | |
1095 | (*argptr)++; | |
1096 | ||
1097 | copy = (char *) alloca (p - *argptr + 1); | |
1098 | memcpy (copy, *argptr, p - *argptr); | |
1099 | copy[p - *argptr] = '\0'; | |
1100 | if (p != *argptr | |
1101 | && copy[0] | |
1102 | && copy[0] == copy[p - *argptr - 1] | |
c5f0f3d0 | 1103 | && strchr (get_gdb_completer_quote_characters (), copy[0]) != NULL) |
50641945 FN |
1104 | { |
1105 | copy[p - *argptr - 1] = '\0'; | |
1106 | copy++; | |
1107 | } | |
1108 | while (*p == ' ' || *p == '\t') | |
1109 | p++; | |
1110 | *argptr = p; | |
1111 | ||
1112 | /* If it starts with $: may be a legitimate variable or routine name | |
1113 | (e.g. HP-UX millicode routines such as $$dyncall), or it may | |
1114 | be history value, or it may be a convenience variable */ | |
1115 | ||
1116 | if (*copy == '$') | |
1117 | { | |
1118 | value_ptr valx; | |
1119 | int index = 0; | |
1120 | int need_canonical = 0; | |
1121 | ||
1122 | p = (copy[1] == '$') ? copy + 2 : copy + 1; | |
1123 | while (*p >= '0' && *p <= '9') | |
1124 | p++; | |
1125 | if (!*p) /* reached end of token without hitting non-digit */ | |
1126 | { | |
1127 | /* We have a value history reference */ | |
1128 | sscanf ((copy[1] == '$') ? copy + 2 : copy + 1, "%d", &index); | |
1129 | valx = access_value_history ((copy[1] == '$') ? -index : index); | |
1130 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1131 | error ("History values used in line specs must have integer values."); | |
1132 | } | |
1133 | else | |
1134 | { | |
1135 | /* Not all digits -- may be user variable/function or a | |
1136 | convenience variable */ | |
1137 | ||
1138 | /* Look up entire name as a symbol first */ | |
1139 | sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab); | |
1140 | s = (struct symtab *) 0; | |
1141 | need_canonical = 1; | |
1142 | /* Symbol was found --> jump to normal symbol processing. | |
1143 | Code following "symbol_found" expects "copy" to have the | |
1144 | symbol name, "sym" to have the symbol pointer, "s" to be | |
1145 | a specified file's symtab, and sym_symtab to be the symbol's | |
1146 | symtab. */ | |
1147 | if (sym) | |
1148 | goto symbol_found; | |
1149 | ||
1150 | /* If symbol was not found, look in minimal symbol tables */ | |
1151 | msymbol = lookup_minimal_symbol (copy, 0, 0); | |
1152 | /* Min symbol was found --> jump to minsym processing. */ | |
1153 | if (msymbol) | |
1154 | goto minimal_symbol_found; | |
1155 | ||
1156 | /* Not a user variable or function -- must be convenience variable */ | |
1157 | need_canonical = (s == 0) ? 1 : 0; | |
1158 | valx = value_of_internalvar (lookup_internalvar (copy + 1)); | |
1159 | if (TYPE_CODE (VALUE_TYPE (valx)) != TYPE_CODE_INT) | |
1160 | error ("Convenience variables used in line specs must have integer values."); | |
1161 | } | |
1162 | ||
1163 | /* Either history value or convenience value from above, in valx */ | |
1164 | val.symtab = s ? s : default_symtab; | |
1165 | val.line = value_as_long (valx); | |
1166 | val.pc = 0; | |
1167 | ||
1168 | values.sals = (struct symtab_and_line *) xmalloc (sizeof val); | |
1169 | values.sals[0] = val; | |
1170 | values.nelts = 1; | |
1171 | ||
1172 | if (need_canonical) | |
1173 | build_canonical_line_spec (values.sals, NULL, canonical); | |
1174 | ||
1175 | return values; | |
1176 | } | |
1177 | ||
1178 | ||
1179 | /* Look up that token as a variable. | |
1180 | If file specified, use that file's per-file block to start with. */ | |
1181 | ||
1182 | sym = lookup_symbol (copy, | |
1183 | (s ? BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK) | |
1184 | : get_selected_block ()), | |
1185 | VAR_NAMESPACE, 0, &sym_symtab); | |
1186 | ||
1187 | symbol_found: /* We also jump here from inside the C++ class/namespace | |
1188 | code on finding a symbol of the form "A::B::C" */ | |
1189 | ||
1190 | if (sym != NULL) | |
1191 | { | |
1192 | if (SYMBOL_CLASS (sym) == LOC_BLOCK) | |
1193 | { | |
1194 | /* Arg is the name of a function */ | |
1195 | values.sals = (struct symtab_and_line *) | |
1196 | xmalloc (sizeof (struct symtab_and_line)); | |
1197 | values.sals[0] = find_function_start_sal (sym, funfirstline); | |
1198 | values.nelts = 1; | |
1199 | ||
1200 | /* Don't use the SYMBOL_LINE; if used at all it points to | |
1201 | the line containing the parameters or thereabouts, not | |
1202 | the first line of code. */ | |
1203 | ||
1204 | /* We might need a canonical line spec if it is a static | |
1205 | function. */ | |
1206 | if (s == 0) | |
1207 | { | |
1208 | struct blockvector *bv = BLOCKVECTOR (sym_symtab); | |
1209 | struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK); | |
1210 | if (lookup_block_symbol (b, copy, VAR_NAMESPACE) != NULL) | |
1211 | build_canonical_line_spec (values.sals, copy, canonical); | |
1212 | } | |
1213 | return values; | |
1214 | } | |
1215 | else | |
1216 | { | |
1217 | if (funfirstline) | |
1218 | error ("\"%s\" is not a function", copy); | |
1219 | else if (SYMBOL_LINE (sym) != 0) | |
1220 | { | |
1221 | /* We know its line number. */ | |
1222 | values.sals = (struct symtab_and_line *) | |
1223 | xmalloc (sizeof (struct symtab_and_line)); | |
1224 | values.nelts = 1; | |
1225 | memset (&values.sals[0], 0, sizeof (values.sals[0])); | |
1226 | values.sals[0].symtab = sym_symtab; | |
1227 | values.sals[0].line = SYMBOL_LINE (sym); | |
1228 | return values; | |
1229 | } | |
1230 | else | |
1231 | /* This can happen if it is compiled with a compiler which doesn't | |
1232 | put out line numbers for variables. */ | |
1233 | /* FIXME: Shouldn't we just set .line and .symtab to zero | |
1234 | and return? For example, "info line foo" could print | |
1235 | the address. */ | |
1236 | error ("Line number not known for symbol \"%s\"", copy); | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | msymbol = lookup_minimal_symbol (copy, NULL, NULL); | |
1241 | ||
1242 | minimal_symbol_found: /* We also jump here from the case for variables | |
1243 | that begin with '$' */ | |
1244 | ||
1245 | if (msymbol != NULL) | |
1246 | { | |
1247 | values.sals = (struct symtab_and_line *) | |
1248 | xmalloc (sizeof (struct symtab_and_line)); | |
1249 | values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol), | |
1250 | (struct sec *) 0, 0); | |
1251 | values.sals[0].section = SYMBOL_BFD_SECTION (msymbol); | |
1252 | if (funfirstline) | |
1253 | { | |
1254 | values.sals[0].pc += FUNCTION_START_OFFSET; | |
1255 | values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc); | |
1256 | } | |
1257 | values.nelts = 1; | |
1258 | return values; | |
1259 | } | |
1260 | ||
1261 | if (!have_full_symbols () && | |
1262 | !have_partial_symbols () && !have_minimal_symbols ()) | |
e85428fc | 1263 | error ("No symbol table is loaded. Use the \"file\" command."); |
50641945 FN |
1264 | |
1265 | error ("Function \"%s\" not defined.", copy); | |
1266 | return values; /* for lint */ | |
1267 | } |