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1 | /* Objective-C language support routines for GDB, the GNU debugger. | |
2 | ||
3 | Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009 | |
4 | Free Software Foundation, Inc. | |
5 | ||
6 | Contributed by Apple Computer, Inc. | |
7 | Written by Michael Snyder. | |
8 | ||
9 | This file is part of GDB. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 3 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
23 | ||
24 | #include "defs.h" | |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "expression.h" | |
28 | #include "parser-defs.h" | |
29 | #include "language.h" | |
30 | #include "c-lang.h" | |
31 | #include "objc-lang.h" | |
32 | #include "exceptions.h" | |
33 | #include "complaints.h" | |
34 | #include "value.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
37 | #include "gdb_string.h" /* for strchr */ | |
38 | #include "target.h" /* for target_has_execution */ | |
39 | #include "gdbcore.h" | |
40 | #include "gdbcmd.h" | |
41 | #include "frame.h" | |
42 | #include "gdb_regex.h" | |
43 | #include "regcache.h" | |
44 | #include "block.h" | |
45 | #include "infcall.h" | |
46 | #include "valprint.h" | |
47 | #include "gdb_assert.h" | |
48 | ||
49 | #include <ctype.h> | |
50 | ||
51 | struct objc_object { | |
52 | CORE_ADDR isa; | |
53 | }; | |
54 | ||
55 | struct objc_class { | |
56 | CORE_ADDR isa; | |
57 | CORE_ADDR super_class; | |
58 | CORE_ADDR name; | |
59 | long version; | |
60 | long info; | |
61 | long instance_size; | |
62 | CORE_ADDR ivars; | |
63 | CORE_ADDR methods; | |
64 | CORE_ADDR cache; | |
65 | CORE_ADDR protocols; | |
66 | }; | |
67 | ||
68 | struct objc_super { | |
69 | CORE_ADDR receiver; | |
70 | CORE_ADDR class; | |
71 | }; | |
72 | ||
73 | struct objc_method { | |
74 | CORE_ADDR name; | |
75 | CORE_ADDR types; | |
76 | CORE_ADDR imp; | |
77 | }; | |
78 | ||
79 | static const struct objfile_data *objc_objfile_data; | |
80 | ||
81 | /* Lookup a structure type named "struct NAME", visible in lexical | |
82 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
83 | suitably defined. */ | |
84 | ||
85 | struct symbol * | |
86 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
87 | { | |
88 | struct symbol *sym; | |
89 | ||
90 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); | |
91 | ||
92 | if (sym == NULL) | |
93 | { | |
94 | if (noerr) | |
95 | return 0; | |
96 | else | |
97 | error (_("No struct type named %s."), name); | |
98 | } | |
99 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
100 | { | |
101 | if (noerr) | |
102 | return 0; | |
103 | else | |
104 | error (_("This context has class, union or enum %s, not a struct."), | |
105 | name); | |
106 | } | |
107 | return sym; | |
108 | } | |
109 | ||
110 | CORE_ADDR | |
111 | lookup_objc_class (struct gdbarch *gdbarch, char *classname) | |
112 | { | |
113 | struct type *char_type = builtin_type (gdbarch)->builtin_char; | |
114 | struct value * function, *classval; | |
115 | ||
116 | if (! target_has_execution) | |
117 | { | |
118 | /* Can't call into inferior to lookup class. */ | |
119 | return 0; | |
120 | } | |
121 | ||
122 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
123 | function = find_function_in_inferior("objc_lookUpClass", NULL); | |
124 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) | |
125 | function = find_function_in_inferior("objc_lookup_class", NULL); | |
126 | else | |
127 | { | |
128 | complaint (&symfile_complaints, _("no way to lookup Objective-C classes")); | |
129 | return 0; | |
130 | } | |
131 | ||
132 | classval = value_string (classname, strlen (classname) + 1, char_type); | |
133 | classval = value_coerce_array (classval); | |
134 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
135 | 1, &classval)); | |
136 | } | |
137 | ||
138 | CORE_ADDR | |
139 | lookup_child_selector (struct gdbarch *gdbarch, char *selname) | |
140 | { | |
141 | struct type *char_type = builtin_type (gdbarch)->builtin_char; | |
142 | struct value * function, *selstring; | |
143 | ||
144 | if (! target_has_execution) | |
145 | { | |
146 | /* Can't call into inferior to lookup selector. */ | |
147 | return 0; | |
148 | } | |
149 | ||
150 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
151 | function = find_function_in_inferior("sel_getUid", NULL); | |
152 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) | |
153 | function = find_function_in_inferior("sel_get_any_uid", NULL); | |
154 | else | |
155 | { | |
156 | complaint (&symfile_complaints, _("no way to lookup Objective-C selectors")); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | selstring = value_coerce_array (value_string (selname, | |
161 | strlen (selname) + 1, char_type)); | |
162 | return value_as_long (call_function_by_hand (function, 1, &selstring)); | |
163 | } | |
164 | ||
165 | struct value * | |
166 | value_nsstring (struct gdbarch *gdbarch, char *ptr, int len) | |
167 | { | |
168 | struct type *char_type = builtin_type (gdbarch)->builtin_char; | |
169 | struct value *stringValue[3]; | |
170 | struct value *function, *nsstringValue; | |
171 | struct symbol *sym; | |
172 | struct type *type; | |
173 | ||
174 | if (!target_has_execution) | |
175 | return 0; /* Can't call into inferior to create NSString. */ | |
176 | ||
177 | stringValue[2] = value_string(ptr, len, char_type); | |
178 | stringValue[2] = value_coerce_array(stringValue[2]); | |
179 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ | |
180 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) | |
181 | { | |
182 | function = find_function_in_inferior("_NSNewStringFromCString", NULL); | |
183 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
184 | } | |
185 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
186 | { | |
187 | function = find_function_in_inferior("istr", NULL); | |
188 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
189 | } | |
190 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
191 | { | |
192 | function | |
193 | = find_function_in_inferior("+[NSString stringWithCString:]", NULL); | |
194 | type = builtin_type (gdbarch)->builtin_long; | |
195 | ||
196 | stringValue[0] = value_from_longest | |
197 | (type, lookup_objc_class (gdbarch, "NSString")); | |
198 | stringValue[1] = value_from_longest | |
199 | (type, lookup_child_selector (gdbarch, "stringWithCString:")); | |
200 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); | |
201 | } | |
202 | else | |
203 | error (_("NSString: internal error -- no way to create new NSString")); | |
204 | ||
205 | sym = lookup_struct_typedef("NSString", 0, 1); | |
206 | if (sym == NULL) | |
207 | sym = lookup_struct_typedef("NXString", 0, 1); | |
208 | if (sym == NULL) | |
209 | type = builtin_type (gdbarch)->builtin_data_ptr; | |
210 | else | |
211 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
212 | ||
213 | deprecated_set_value_type (nsstringValue, type); | |
214 | return nsstringValue; | |
215 | } | |
216 | ||
217 | /* Objective-C name demangling. */ | |
218 | ||
219 | char * | |
220 | objc_demangle (const char *mangled, int options) | |
221 | { | |
222 | char *demangled, *cp; | |
223 | ||
224 | if (mangled[0] == '_' && | |
225 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
226 | mangled[2] == '_') | |
227 | { | |
228 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
229 | ||
230 | if (mangled[1] == 'i') | |
231 | *cp++ = '-'; /* for instance method */ | |
232 | else | |
233 | *cp++ = '+'; /* for class method */ | |
234 | ||
235 | *cp++ = '['; /* opening left brace */ | |
236 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
237 | ||
238 | while (*cp && *cp == '_') | |
239 | cp++; /* skip any initial underbars in class name */ | |
240 | ||
241 | cp = strchr(cp, '_'); | |
242 | if (!cp) /* find first non-initial underbar */ | |
243 | { | |
244 | xfree(demangled); /* not mangled name */ | |
245 | return NULL; | |
246 | } | |
247 | if (cp[1] == '_') { /* easy case: no category name */ | |
248 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
249 | strcpy(cp, mangled + (cp - demangled) + 2); | |
250 | } | |
251 | else { | |
252 | *cp++ = '('; /* less easy case: category name */ | |
253 | cp = strchr(cp, '_'); | |
254 | if (!cp) | |
255 | { | |
256 | xfree(demangled); /* not mangled name */ | |
257 | return NULL; | |
258 | } | |
259 | *cp++ = ')'; | |
260 | *cp++ = ' '; /* overwriting 1st char of method name... */ | |
261 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ | |
262 | } | |
263 | ||
264 | while (*cp && *cp == '_') | |
265 | cp++; /* skip any initial underbars in method name */ | |
266 | ||
267 | for (; *cp; cp++) | |
268 | if (*cp == '_') | |
269 | *cp = ':'; /* replace remaining '_' with ':' */ | |
270 | ||
271 | *cp++ = ']'; /* closing right brace */ | |
272 | *cp++ = 0; /* string terminator */ | |
273 | return demangled; | |
274 | } | |
275 | else | |
276 | return NULL; /* Not an objc mangled name. */ | |
277 | } | |
278 | ||
279 | /* Print the character C on STREAM as part of the contents of a | |
280 | literal string whose delimiter is QUOTER. Note that that format | |
281 | for printing characters and strings is language specific. */ | |
282 | ||
283 | static void | |
284 | objc_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) | |
285 | { | |
286 | ||
287 | c &= 0xFF; /* Avoid sign bit follies. */ | |
288 | ||
289 | if (PRINT_LITERAL_FORM (c)) | |
290 | { | |
291 | if (c == '\\' || c == quoter) | |
292 | { | |
293 | fputs_filtered ("\\", stream); | |
294 | } | |
295 | fprintf_filtered (stream, "%c", c); | |
296 | } | |
297 | else | |
298 | { | |
299 | switch (c) | |
300 | { | |
301 | case '\n': | |
302 | fputs_filtered ("\\n", stream); | |
303 | break; | |
304 | case '\b': | |
305 | fputs_filtered ("\\b", stream); | |
306 | break; | |
307 | case '\t': | |
308 | fputs_filtered ("\\t", stream); | |
309 | break; | |
310 | case '\f': | |
311 | fputs_filtered ("\\f", stream); | |
312 | break; | |
313 | case '\r': | |
314 | fputs_filtered ("\\r", stream); | |
315 | break; | |
316 | case '\033': | |
317 | fputs_filtered ("\\e", stream); | |
318 | break; | |
319 | case '\007': | |
320 | fputs_filtered ("\\a", stream); | |
321 | break; | |
322 | default: | |
323 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
324 | break; | |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | static void | |
330 | objc_printchar (int c, struct type *type, struct ui_file *stream) | |
331 | { | |
332 | fputs_filtered ("'", stream); | |
333 | objc_emit_char (c, type, stream, '\''); | |
334 | fputs_filtered ("'", stream); | |
335 | } | |
336 | ||
337 | /* Print the character string STRING, printing at most LENGTH | |
338 | characters. Printing stops early if the number hits print_max; | |
339 | repeat counts are printed as appropriate. Print ellipses at the | |
340 | end if we had to stop before printing LENGTH characters, or if | |
341 | FORCE_ELLIPSES. */ | |
342 | ||
343 | static void | |
344 | objc_printstr (struct ui_file *stream, struct type *type, | |
345 | const gdb_byte *string, unsigned int length, | |
346 | int force_ellipses, | |
347 | const struct value_print_options *options) | |
348 | { | |
349 | unsigned int i; | |
350 | unsigned int things_printed = 0; | |
351 | int in_quotes = 0; | |
352 | int need_comma = 0; | |
353 | int width = TYPE_LENGTH (type); | |
354 | ||
355 | /* If the string was not truncated due to `set print elements', and | |
356 | the last byte of it is a null, we don't print that, in | |
357 | traditional C style. */ | |
358 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') | |
359 | length--; | |
360 | ||
361 | if (length == 0) | |
362 | { | |
363 | fputs_filtered ("\"\"", stream); | |
364 | return; | |
365 | } | |
366 | ||
367 | for (i = 0; i < length && things_printed < options->print_max; ++i) | |
368 | { | |
369 | /* Position of the character we are examining to see whether it | |
370 | is repeated. */ | |
371 | unsigned int rep1; | |
372 | /* Number of repetitions we have detected so far. */ | |
373 | unsigned int reps; | |
374 | ||
375 | QUIT; | |
376 | ||
377 | if (need_comma) | |
378 | { | |
379 | fputs_filtered (", ", stream); | |
380 | need_comma = 0; | |
381 | } | |
382 | ||
383 | rep1 = i + 1; | |
384 | reps = 1; | |
385 | while (rep1 < length && string[rep1] == string[i]) | |
386 | { | |
387 | ++rep1; | |
388 | ++reps; | |
389 | } | |
390 | ||
391 | if (reps > options->repeat_count_threshold) | |
392 | { | |
393 | if (in_quotes) | |
394 | { | |
395 | if (options->inspect_it) | |
396 | fputs_filtered ("\\\", ", stream); | |
397 | else | |
398 | fputs_filtered ("\", ", stream); | |
399 | in_quotes = 0; | |
400 | } | |
401 | objc_printchar (string[i], type, stream); | |
402 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
403 | i = rep1 - 1; | |
404 | things_printed += options->repeat_count_threshold; | |
405 | need_comma = 1; | |
406 | } | |
407 | else | |
408 | { | |
409 | if (!in_quotes) | |
410 | { | |
411 | if (options->inspect_it) | |
412 | fputs_filtered ("\\\"", stream); | |
413 | else | |
414 | fputs_filtered ("\"", stream); | |
415 | in_quotes = 1; | |
416 | } | |
417 | objc_emit_char (string[i], type, stream, '"'); | |
418 | ++things_printed; | |
419 | } | |
420 | } | |
421 | ||
422 | /* Terminate the quotes if necessary. */ | |
423 | if (in_quotes) | |
424 | { | |
425 | if (options->inspect_it) | |
426 | fputs_filtered ("\\\"", stream); | |
427 | else | |
428 | fputs_filtered ("\"", stream); | |
429 | } | |
430 | ||
431 | if (force_ellipses || i < length) | |
432 | fputs_filtered ("...", stream); | |
433 | } | |
434 | ||
435 | /* Determine if we are currently in the Objective-C dispatch function. | |
436 | If so, get the address of the method function that the dispatcher | |
437 | would call and use that as the function to step into instead. Also | |
438 | skip over the trampoline for the function (if any). This is better | |
439 | for the user since they are only interested in stepping into the | |
440 | method function anyway. */ | |
441 | static CORE_ADDR | |
442 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) | |
443 | { | |
444 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
445 | CORE_ADDR real_stop_pc; | |
446 | CORE_ADDR method_stop_pc; | |
447 | ||
448 | real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc); | |
449 | ||
450 | if (real_stop_pc != 0) | |
451 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
452 | else | |
453 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
454 | ||
455 | if (method_stop_pc) | |
456 | { | |
457 | real_stop_pc = gdbarch_skip_trampoline_code | |
458 | (gdbarch, frame, method_stop_pc); | |
459 | if (real_stop_pc == 0) | |
460 | real_stop_pc = method_stop_pc; | |
461 | } | |
462 | ||
463 | return real_stop_pc; | |
464 | } | |
465 | ||
466 | ||
467 | /* Table mapping opcodes into strings for printing operators | |
468 | and precedences of the operators. */ | |
469 | ||
470 | static const struct op_print objc_op_print_tab[] = | |
471 | { | |
472 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
473 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
474 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
475 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
476 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
477 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
478 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
479 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
480 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
481 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
482 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
483 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
484 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
485 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
486 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
487 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
488 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
489 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
490 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
491 | {"%", BINOP_REM, PREC_MUL, 0}, | |
492 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
493 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
494 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
495 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
496 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
497 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
498 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
499 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
500 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
501 | {NULL, OP_NULL, PREC_NULL, 0} | |
502 | }; | |
503 | ||
504 | const struct language_defn objc_language_defn = { | |
505 | "objective-c", /* Language name */ | |
506 | language_objc, | |
507 | range_check_off, | |
508 | type_check_off, | |
509 | case_sensitive_on, | |
510 | array_row_major, | |
511 | macro_expansion_c, | |
512 | &exp_descriptor_standard, | |
513 | objc_parse, | |
514 | objc_error, | |
515 | null_post_parser, | |
516 | objc_printchar, /* Print a character constant */ | |
517 | objc_printstr, /* Function to print string constant */ | |
518 | objc_emit_char, | |
519 | c_print_type, /* Print a type using appropriate syntax */ | |
520 | c_print_typedef, /* Print a typedef using appropriate syntax */ | |
521 | c_val_print, /* Print a value using appropriate syntax */ | |
522 | c_value_print, /* Print a top-level value */ | |
523 | objc_skip_trampoline, /* Language specific skip_trampoline */ | |
524 | "self", /* name_of_this */ | |
525 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ | |
526 | basic_lookup_transparent_type,/* lookup_transparent_type */ | |
527 | objc_demangle, /* Language specific symbol demangler */ | |
528 | NULL, /* Language specific class_name_from_physname */ | |
529 | objc_op_print_tab, /* Expression operators for printing */ | |
530 | 1, /* C-style arrays */ | |
531 | 0, /* String lower bound */ | |
532 | default_word_break_characters, | |
533 | default_make_symbol_completion_list, | |
534 | c_language_arch_info, | |
535 | default_print_array_index, | |
536 | default_pass_by_reference, | |
537 | default_get_string, | |
538 | LANG_MAGIC | |
539 | }; | |
540 | ||
541 | /* | |
542 | * ObjC: | |
543 | * Following functions help construct Objective-C message calls | |
544 | */ | |
545 | ||
546 | struct selname /* For parsing Objective-C. */ | |
547 | { | |
548 | struct selname *next; | |
549 | char *msglist_sel; | |
550 | int msglist_len; | |
551 | }; | |
552 | ||
553 | static int msglist_len; | |
554 | static struct selname *selname_chain; | |
555 | static char *msglist_sel; | |
556 | ||
557 | void | |
558 | start_msglist(void) | |
559 | { | |
560 | struct selname *new = | |
561 | (struct selname *) xmalloc (sizeof (struct selname)); | |
562 | ||
563 | new->next = selname_chain; | |
564 | new->msglist_len = msglist_len; | |
565 | new->msglist_sel = msglist_sel; | |
566 | msglist_len = 0; | |
567 | msglist_sel = (char *)xmalloc(1); | |
568 | *msglist_sel = 0; | |
569 | selname_chain = new; | |
570 | } | |
571 | ||
572 | void | |
573 | add_msglist(struct stoken *str, int addcolon) | |
574 | { | |
575 | char *s, *p; | |
576 | int len, plen; | |
577 | ||
578 | if (str == 0) { /* Unnamed arg, or... */ | |
579 | if (addcolon == 0) { /* variable number of args. */ | |
580 | msglist_len++; | |
581 | return; | |
582 | } | |
583 | p = ""; | |
584 | plen = 0; | |
585 | } else { | |
586 | p = str->ptr; | |
587 | plen = str->length; | |
588 | } | |
589 | len = plen + strlen(msglist_sel) + 2; | |
590 | s = (char *)xmalloc(len); | |
591 | strcpy(s, msglist_sel); | |
592 | strncat(s, p, plen); | |
593 | xfree(msglist_sel); | |
594 | msglist_sel = s; | |
595 | if (addcolon) { | |
596 | s[len-2] = ':'; | |
597 | s[len-1] = 0; | |
598 | msglist_len++; | |
599 | } else | |
600 | s[len-2] = '\0'; | |
601 | } | |
602 | ||
603 | int | |
604 | end_msglist(void) | |
605 | { | |
606 | int val = msglist_len; | |
607 | struct selname *sel = selname_chain; | |
608 | char *p = msglist_sel; | |
609 | CORE_ADDR selid; | |
610 | ||
611 | selname_chain = sel->next; | |
612 | msglist_len = sel->msglist_len; | |
613 | msglist_sel = sel->msglist_sel; | |
614 | selid = lookup_child_selector (parse_gdbarch, p); | |
615 | if (!selid) | |
616 | error (_("Can't find selector \"%s\""), p); | |
617 | write_exp_elt_longcst (selid); | |
618 | xfree(p); | |
619 | write_exp_elt_longcst (val); /* Number of args */ | |
620 | xfree(sel); | |
621 | ||
622 | return val; | |
623 | } | |
624 | ||
625 | /* | |
626 | * Function: specialcmp (char *a, char *b) | |
627 | * | |
628 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
629 | * Used for qsorting lists of objc methods (either by class or selector). | |
630 | */ | |
631 | ||
632 | static int | |
633 | specialcmp (char *a, char *b) | |
634 | { | |
635 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
636 | { | |
637 | if (*a != *b) | |
638 | return *a - *b; | |
639 | a++, b++; | |
640 | } | |
641 | if (*a && *a != ' ' && *a != ']') | |
642 | return 1; /* a is longer therefore greater */ | |
643 | if (*b && *b != ' ' && *b != ']') | |
644 | return -1; /* a is shorter therefore lesser */ | |
645 | return 0; /* a and b are identical */ | |
646 | } | |
647 | ||
648 | /* | |
649 | * Function: compare_selectors (const void *, const void *) | |
650 | * | |
651 | * Comparison function for use with qsort. Arguments are symbols or | |
652 | * msymbols Compares selector part of objc method name alphabetically. | |
653 | */ | |
654 | ||
655 | static int | |
656 | compare_selectors (const void *a, const void *b) | |
657 | { | |
658 | char *aname, *bname; | |
659 | ||
660 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); | |
661 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
662 | if (aname == NULL || bname == NULL) | |
663 | error (_("internal: compare_selectors(1)")); | |
664 | ||
665 | aname = strchr(aname, ' '); | |
666 | bname = strchr(bname, ' '); | |
667 | if (aname == NULL || bname == NULL) | |
668 | error (_("internal: compare_selectors(2)")); | |
669 | ||
670 | return specialcmp (aname+1, bname+1); | |
671 | } | |
672 | ||
673 | /* | |
674 | * Function: selectors_info (regexp, from_tty) | |
675 | * | |
676 | * Implements the "Info selectors" command. Takes an optional regexp | |
677 | * arg. Lists all objective c selectors that match the regexp. Works | |
678 | * by grepping thru all symbols for objective c methods. Output list | |
679 | * is sorted and uniqued. | |
680 | */ | |
681 | ||
682 | static void | |
683 | selectors_info (char *regexp, int from_tty) | |
684 | { | |
685 | struct objfile *objfile; | |
686 | struct minimal_symbol *msymbol; | |
687 | char *name; | |
688 | char *val; | |
689 | int matches = 0; | |
690 | int maxlen = 0; | |
691 | int ix; | |
692 | char myregexp[2048]; | |
693 | char asel[256]; | |
694 | struct symbol **sym_arr; | |
695 | int plusminus = 0; | |
696 | ||
697 | if (regexp == NULL) | |
698 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ | |
699 | else | |
700 | { | |
701 | if (*regexp == '+' || *regexp == '-') | |
702 | { /* User wants only class methods or only instance methods. */ | |
703 | plusminus = *regexp++; | |
704 | while (*regexp == ' ' || *regexp == '\t') | |
705 | regexp++; | |
706 | } | |
707 | if (*regexp == '\0') | |
708 | strcpy(myregexp, ".*]"); | |
709 | else | |
710 | { | |
711 | strcpy(myregexp, regexp); | |
712 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
713 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
714 | else | |
715 | strcat(myregexp, ".*]"); | |
716 | } | |
717 | } | |
718 | ||
719 | if (regexp != NULL) | |
720 | { | |
721 | val = re_comp (myregexp); | |
722 | if (val != 0) | |
723 | error (_("Invalid regexp (%s): %s"), val, regexp); | |
724 | } | |
725 | ||
726 | /* First time thru is JUST to get max length and count. */ | |
727 | ALL_MSYMBOLS (objfile, msymbol) | |
728 | { | |
729 | QUIT; | |
730 | name = SYMBOL_NATURAL_NAME (msymbol); | |
731 | if (name && | |
732 | (name[0] == '-' || name[0] == '+') && | |
733 | name[1] == '[') /* Got a method name. */ | |
734 | { | |
735 | /* Filter for class/instance methods. */ | |
736 | if (plusminus && name[0] != plusminus) | |
737 | continue; | |
738 | /* Find selector part. */ | |
739 | name = (char *) strchr(name+2, ' '); | |
740 | if (regexp == NULL || re_exec(++name) != 0) | |
741 | { | |
742 | char *mystart = name; | |
743 | char *myend = (char *) strchr(mystart, ']'); | |
744 | ||
745 | if (myend && (myend - mystart > maxlen)) | |
746 | maxlen = myend - mystart; /* Get longest selector. */ | |
747 | matches++; | |
748 | } | |
749 | } | |
750 | } | |
751 | if (matches) | |
752 | { | |
753 | printf_filtered (_("Selectors matching \"%s\":\n\n"), | |
754 | regexp ? regexp : "*"); | |
755 | ||
756 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
757 | matches = 0; | |
758 | ALL_MSYMBOLS (objfile, msymbol) | |
759 | { | |
760 | QUIT; | |
761 | name = SYMBOL_NATURAL_NAME (msymbol); | |
762 | if (name && | |
763 | (name[0] == '-' || name[0] == '+') && | |
764 | name[1] == '[') /* Got a method name. */ | |
765 | { | |
766 | /* Filter for class/instance methods. */ | |
767 | if (plusminus && name[0] != plusminus) | |
768 | continue; | |
769 | /* Find selector part. */ | |
770 | name = (char *) strchr(name+2, ' '); | |
771 | if (regexp == NULL || re_exec(++name) != 0) | |
772 | sym_arr[matches++] = (struct symbol *) msymbol; | |
773 | } | |
774 | } | |
775 | ||
776 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
777 | compare_selectors); | |
778 | /* Prevent compare on first iteration. */ | |
779 | asel[0] = 0; | |
780 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
781 | { | |
782 | char *p = asel; | |
783 | ||
784 | QUIT; | |
785 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); | |
786 | name = strchr (name, ' ') + 1; | |
787 | if (p[0] && specialcmp(name, p) == 0) | |
788 | continue; /* Seen this one already (not unique). */ | |
789 | ||
790 | /* Copy selector part. */ | |
791 | while (*name && *name != ']') | |
792 | *p++ = *name++; | |
793 | *p++ = '\0'; | |
794 | /* Print in columns. */ | |
795 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
796 | } | |
797 | begin_line(); | |
798 | } | |
799 | else | |
800 | printf_filtered (_("No selectors matching \"%s\"\n"), regexp ? regexp : "*"); | |
801 | } | |
802 | ||
803 | /* | |
804 | * Function: compare_classes (const void *, const void *) | |
805 | * | |
806 | * Comparison function for use with qsort. Arguments are symbols or | |
807 | * msymbols Compares class part of objc method name alphabetically. | |
808 | */ | |
809 | ||
810 | static int | |
811 | compare_classes (const void *a, const void *b) | |
812 | { | |
813 | char *aname, *bname; | |
814 | ||
815 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); | |
816 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
817 | if (aname == NULL || bname == NULL) | |
818 | error (_("internal: compare_classes(1)")); | |
819 | ||
820 | return specialcmp (aname+1, bname+1); | |
821 | } | |
822 | ||
823 | /* | |
824 | * Function: classes_info(regexp, from_tty) | |
825 | * | |
826 | * Implements the "info classes" command for objective c classes. | |
827 | * Lists all objective c classes that match the optional regexp. | |
828 | * Works by grepping thru the list of objective c methods. List will | |
829 | * be sorted and uniqued (since one class may have many methods). | |
830 | * BUGS: will not list a class that has no methods. | |
831 | */ | |
832 | ||
833 | static void | |
834 | classes_info (char *regexp, int from_tty) | |
835 | { | |
836 | struct objfile *objfile; | |
837 | struct minimal_symbol *msymbol; | |
838 | char *name; | |
839 | char *val; | |
840 | int matches = 0; | |
841 | int maxlen = 0; | |
842 | int ix; | |
843 | char myregexp[2048]; | |
844 | char aclass[256]; | |
845 | struct symbol **sym_arr; | |
846 | ||
847 | if (regexp == NULL) | |
848 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ | |
849 | else | |
850 | { | |
851 | strcpy(myregexp, regexp); | |
852 | if (myregexp[strlen(myregexp) - 1] == '$') | |
853 | /* In the method name, the end of the class name is marked by ' '. */ | |
854 | myregexp[strlen(myregexp) - 1] = ' '; | |
855 | else | |
856 | strcat(myregexp, ".* "); | |
857 | } | |
858 | ||
859 | if (regexp != NULL) | |
860 | { | |
861 | val = re_comp (myregexp); | |
862 | if (val != 0) | |
863 | error (_("Invalid regexp (%s): %s"), val, regexp); | |
864 | } | |
865 | ||
866 | /* First time thru is JUST to get max length and count. */ | |
867 | ALL_MSYMBOLS (objfile, msymbol) | |
868 | { | |
869 | QUIT; | |
870 | name = SYMBOL_NATURAL_NAME (msymbol); | |
871 | if (name && | |
872 | (name[0] == '-' || name[0] == '+') && | |
873 | name[1] == '[') /* Got a method name. */ | |
874 | if (regexp == NULL || re_exec(name+2) != 0) | |
875 | { | |
876 | /* Compute length of classname part. */ | |
877 | char *mystart = name + 2; | |
878 | char *myend = (char *) strchr(mystart, ' '); | |
879 | ||
880 | if (myend && (myend - mystart > maxlen)) | |
881 | maxlen = myend - mystart; | |
882 | matches++; | |
883 | } | |
884 | } | |
885 | if (matches) | |
886 | { | |
887 | printf_filtered (_("Classes matching \"%s\":\n\n"), | |
888 | regexp ? regexp : "*"); | |
889 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
890 | matches = 0; | |
891 | ALL_MSYMBOLS (objfile, msymbol) | |
892 | { | |
893 | QUIT; | |
894 | name = SYMBOL_NATURAL_NAME (msymbol); | |
895 | if (name && | |
896 | (name[0] == '-' || name[0] == '+') && | |
897 | name[1] == '[') /* Got a method name. */ | |
898 | if (regexp == NULL || re_exec(name+2) != 0) | |
899 | sym_arr[matches++] = (struct symbol *) msymbol; | |
900 | } | |
901 | ||
902 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
903 | compare_classes); | |
904 | /* Prevent compare on first iteration. */ | |
905 | aclass[0] = 0; | |
906 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
907 | { | |
908 | char *p = aclass; | |
909 | ||
910 | QUIT; | |
911 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); | |
912 | name += 2; | |
913 | if (p[0] && specialcmp(name, p) == 0) | |
914 | continue; /* Seen this one already (not unique). */ | |
915 | ||
916 | /* Copy class part of method name. */ | |
917 | while (*name && *name != ' ') | |
918 | *p++ = *name++; | |
919 | *p++ = '\0'; | |
920 | /* Print in columns. */ | |
921 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
922 | } | |
923 | begin_line(); | |
924 | } | |
925 | else | |
926 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); | |
927 | } | |
928 | ||
929 | /* | |
930 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
931 | * | |
932 | * Input: a string representing a selector | |
933 | * a pointer to an array of symbol pointers | |
934 | * possibly a pointer to a symbol found by the caller. | |
935 | * | |
936 | * Output: number of methods that implement that selector. Side | |
937 | * effects: The array of symbol pointers is filled with matching syms. | |
938 | * | |
939 | * By analogy with function "find_methods" (symtab.c), builds a list | |
940 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
941 | * (symtab.c) can list them and ask the user to choose one or more. | |
942 | * In this case the matches are objective c methods | |
943 | * ("implementations") matching an objective c selector. | |
944 | * | |
945 | * Note that it is possible for a normal (c-style) function to have | |
946 | * the same name as an objective c selector. To prevent the selector | |
947 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
948 | * search for such a function first, and if it finds one, pass it in | |
949 | * to us. We will then integrate it into the list. We also search | |
950 | * for one here, among the minsyms. | |
951 | * | |
952 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided | |
953 | * into two parts: debuggable (struct symbol) syms, and | |
954 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
955 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
956 | * be the index of the first non-debuggable one). | |
957 | */ | |
958 | ||
959 | /* | |
960 | * Function: total_number_of_imps (char *selector); | |
961 | * | |
962 | * Input: a string representing a selector | |
963 | * Output: number of methods that implement that selector. | |
964 | * | |
965 | * By analogy with function "total_number_of_methods", this allows | |
966 | * decode_line_1 (symtab.c) to detect if there are objective c methods | |
967 | * matching the input, and to allocate an array of pointers to them | |
968 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
969 | */ | |
970 | ||
971 | char * | |
972 | parse_selector (char *method, char **selector) | |
973 | { | |
974 | char *s1 = NULL; | |
975 | char *s2 = NULL; | |
976 | int found_quote = 0; | |
977 | ||
978 | char *nselector = NULL; | |
979 | ||
980 | gdb_assert (selector != NULL); | |
981 | ||
982 | s1 = method; | |
983 | ||
984 | while (isspace (*s1)) | |
985 | s1++; | |
986 | if (*s1 == '\'') | |
987 | { | |
988 | found_quote = 1; | |
989 | s1++; | |
990 | } | |
991 | while (isspace (*s1)) | |
992 | s1++; | |
993 | ||
994 | nselector = s1; | |
995 | s2 = s1; | |
996 | ||
997 | for (;;) { | |
998 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
999 | *s1++ = *s2; | |
1000 | else if (isspace (*s2)) | |
1001 | ; | |
1002 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1003 | break; | |
1004 | else | |
1005 | return NULL; | |
1006 | s2++; | |
1007 | } | |
1008 | *s1++ = '\0'; | |
1009 | ||
1010 | while (isspace (*s2)) | |
1011 | s2++; | |
1012 | if (found_quote) | |
1013 | { | |
1014 | if (*s2 == '\'') | |
1015 | s2++; | |
1016 | while (isspace (*s2)) | |
1017 | s2++; | |
1018 | } | |
1019 | ||
1020 | if (selector != NULL) | |
1021 | *selector = nselector; | |
1022 | ||
1023 | return s2; | |
1024 | } | |
1025 | ||
1026 | char * | |
1027 | parse_method (char *method, char *type, char **class, | |
1028 | char **category, char **selector) | |
1029 | { | |
1030 | char *s1 = NULL; | |
1031 | char *s2 = NULL; | |
1032 | int found_quote = 0; | |
1033 | ||
1034 | char ntype = '\0'; | |
1035 | char *nclass = NULL; | |
1036 | char *ncategory = NULL; | |
1037 | char *nselector = NULL; | |
1038 | ||
1039 | gdb_assert (type != NULL); | |
1040 | gdb_assert (class != NULL); | |
1041 | gdb_assert (category != NULL); | |
1042 | gdb_assert (selector != NULL); | |
1043 | ||
1044 | s1 = method; | |
1045 | ||
1046 | while (isspace (*s1)) | |
1047 | s1++; | |
1048 | if (*s1 == '\'') | |
1049 | { | |
1050 | found_quote = 1; | |
1051 | s1++; | |
1052 | } | |
1053 | while (isspace (*s1)) | |
1054 | s1++; | |
1055 | ||
1056 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1057 | ntype = *s1++; | |
1058 | ||
1059 | while (isspace (*s1)) | |
1060 | s1++; | |
1061 | ||
1062 | if (*s1 != '[') | |
1063 | return NULL; | |
1064 | s1++; | |
1065 | ||
1066 | nclass = s1; | |
1067 | while (isalnum (*s1) || (*s1 == '_')) | |
1068 | s1++; | |
1069 | ||
1070 | s2 = s1; | |
1071 | while (isspace (*s2)) | |
1072 | s2++; | |
1073 | ||
1074 | if (*s2 == '(') | |
1075 | { | |
1076 | s2++; | |
1077 | while (isspace (*s2)) | |
1078 | s2++; | |
1079 | ncategory = s2; | |
1080 | while (isalnum (*s2) || (*s2 == '_')) | |
1081 | s2++; | |
1082 | *s2++ = '\0'; | |
1083 | } | |
1084 | ||
1085 | /* Truncate the class name now that we're not using the open paren. */ | |
1086 | *s1++ = '\0'; | |
1087 | ||
1088 | nselector = s2; | |
1089 | s1 = s2; | |
1090 | ||
1091 | for (;;) { | |
1092 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1093 | *s1++ = *s2; | |
1094 | else if (isspace (*s2)) | |
1095 | ; | |
1096 | else if (*s2 == ']') | |
1097 | break; | |
1098 | else | |
1099 | return NULL; | |
1100 | s2++; | |
1101 | } | |
1102 | *s1++ = '\0'; | |
1103 | s2++; | |
1104 | ||
1105 | while (isspace (*s2)) | |
1106 | s2++; | |
1107 | if (found_quote) | |
1108 | { | |
1109 | if (*s2 != '\'') | |
1110 | return NULL; | |
1111 | s2++; | |
1112 | while (isspace (*s2)) | |
1113 | s2++; | |
1114 | } | |
1115 | ||
1116 | if (type != NULL) | |
1117 | *type = ntype; | |
1118 | if (class != NULL) | |
1119 | *class = nclass; | |
1120 | if (category != NULL) | |
1121 | *category = ncategory; | |
1122 | if (selector != NULL) | |
1123 | *selector = nselector; | |
1124 | ||
1125 | return s2; | |
1126 | } | |
1127 | ||
1128 | static void | |
1129 | find_methods (struct symtab *symtab, char type, | |
1130 | const char *class, const char *category, | |
1131 | const char *selector, struct symbol **syms, | |
1132 | unsigned int *nsym, unsigned int *ndebug) | |
1133 | { | |
1134 | struct objfile *objfile = NULL; | |
1135 | struct minimal_symbol *msymbol = NULL; | |
1136 | struct block *block = NULL; | |
1137 | struct symbol *sym = NULL; | |
1138 | ||
1139 | char *symname = NULL; | |
1140 | ||
1141 | char ntype = '\0'; | |
1142 | char *nclass = NULL; | |
1143 | char *ncategory = NULL; | |
1144 | char *nselector = NULL; | |
1145 | ||
1146 | unsigned int csym = 0; | |
1147 | unsigned int cdebug = 0; | |
1148 | ||
1149 | static char *tmp = NULL; | |
1150 | static unsigned int tmplen = 0; | |
1151 | ||
1152 | gdb_assert (nsym != NULL); | |
1153 | gdb_assert (ndebug != NULL); | |
1154 | ||
1155 | if (symtab) | |
1156 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1157 | ||
1158 | ALL_OBJFILES (objfile) | |
1159 | { | |
1160 | unsigned int *objc_csym; | |
1161 | ||
1162 | /* The objfile_csym variable counts the number of ObjC methods | |
1163 | that this objfile defines. We save that count as a private | |
1164 | objfile data. If we have already determined that this objfile | |
1165 | provides no ObjC methods, we can skip it entirely. */ | |
1166 | ||
1167 | unsigned int objfile_csym = 0; | |
1168 | ||
1169 | objc_csym = objfile_data (objfile, objc_objfile_data); | |
1170 | if (objc_csym != NULL && *objc_csym == 0) | |
1171 | /* There are no ObjC symbols in this objfile. Skip it entirely. */ | |
1172 | continue; | |
1173 | ||
1174 | ALL_OBJFILE_MSYMBOLS (objfile, msymbol) | |
1175 | { | |
1176 | QUIT; | |
1177 | ||
1178 | if ((MSYMBOL_TYPE (msymbol) != mst_text) | |
1179 | && (MSYMBOL_TYPE (msymbol) != mst_file_text)) | |
1180 | /* Not a function or method. */ | |
1181 | continue; | |
1182 | ||
1183 | if (symtab) | |
1184 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) || | |
1185 | (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block))) | |
1186 | /* Not in the specified symtab. */ | |
1187 | continue; | |
1188 | ||
1189 | symname = SYMBOL_NATURAL_NAME (msymbol); | |
1190 | if (symname == NULL) | |
1191 | continue; | |
1192 | ||
1193 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1194 | /* Not a method name. */ | |
1195 | continue; | |
1196 | ||
1197 | while ((strlen (symname) + 1) >= tmplen) | |
1198 | { | |
1199 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1200 | tmp = xrealloc (tmp, tmplen); | |
1201 | } | |
1202 | strcpy (tmp, symname); | |
1203 | ||
1204 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1205 | continue; | |
1206 | ||
1207 | objfile_csym++; | |
1208 | ||
1209 | if ((type != '\0') && (ntype != type)) | |
1210 | continue; | |
1211 | ||
1212 | if ((class != NULL) | |
1213 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
1214 | continue; | |
1215 | ||
1216 | if ((category != NULL) && | |
1217 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1218 | continue; | |
1219 | ||
1220 | if ((selector != NULL) && | |
1221 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1222 | continue; | |
1223 | ||
1224 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1225 | if (sym != NULL) | |
1226 | { | |
1227 | const char *newsymname = SYMBOL_NATURAL_NAME (sym); | |
1228 | ||
1229 | if (strcmp (symname, newsymname) == 0) | |
1230 | { | |
1231 | /* Found a high-level method sym: swap it into the | |
1232 | lower part of sym_arr (below num_debuggable). */ | |
1233 | if (syms != NULL) | |
1234 | { | |
1235 | syms[csym] = syms[cdebug]; | |
1236 | syms[cdebug] = sym; | |
1237 | } | |
1238 | csym++; | |
1239 | cdebug++; | |
1240 | } | |
1241 | else | |
1242 | { | |
1243 | warning ( | |
1244 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
1245 | newsymname, symname); | |
1246 | if (syms != NULL) | |
1247 | syms[csym] = (struct symbol *) msymbol; | |
1248 | csym++; | |
1249 | } | |
1250 | } | |
1251 | else | |
1252 | { | |
1253 | /* Found a non-debuggable method symbol. */ | |
1254 | if (syms != NULL) | |
1255 | syms[csym] = (struct symbol *) msymbol; | |
1256 | csym++; | |
1257 | } | |
1258 | } | |
1259 | if (objc_csym == NULL) | |
1260 | { | |
1261 | objc_csym = obstack_alloc (&objfile->objfile_obstack, | |
1262 | sizeof (*objc_csym)); | |
1263 | *objc_csym = objfile_csym; | |
1264 | set_objfile_data (objfile, objc_objfile_data, objc_csym); | |
1265 | } | |
1266 | else | |
1267 | /* Count of ObjC methods in this objfile should be constant. */ | |
1268 | gdb_assert (*objc_csym == objfile_csym); | |
1269 | } | |
1270 | ||
1271 | if (nsym != NULL) | |
1272 | *nsym = csym; | |
1273 | if (ndebug != NULL) | |
1274 | *ndebug = cdebug; | |
1275 | } | |
1276 | ||
1277 | char *find_imps (struct symtab *symtab, struct block *block, | |
1278 | char *method, struct symbol **syms, | |
1279 | unsigned int *nsym, unsigned int *ndebug) | |
1280 | { | |
1281 | char type = '\0'; | |
1282 | char *class = NULL; | |
1283 | char *category = NULL; | |
1284 | char *selector = NULL; | |
1285 | ||
1286 | unsigned int csym = 0; | |
1287 | unsigned int cdebug = 0; | |
1288 | ||
1289 | unsigned int ncsym = 0; | |
1290 | unsigned int ncdebug = 0; | |
1291 | ||
1292 | char *buf = NULL; | |
1293 | char *tmp = NULL; | |
1294 | ||
1295 | gdb_assert (nsym != NULL); | |
1296 | gdb_assert (ndebug != NULL); | |
1297 | ||
1298 | if (nsym != NULL) | |
1299 | *nsym = 0; | |
1300 | if (ndebug != NULL) | |
1301 | *ndebug = 0; | |
1302 | ||
1303 | buf = (char *) alloca (strlen (method) + 1); | |
1304 | strcpy (buf, method); | |
1305 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1306 | ||
1307 | if (tmp == NULL) { | |
1308 | ||
1309 | struct symbol *sym = NULL; | |
1310 | struct minimal_symbol *msym = NULL; | |
1311 | ||
1312 | strcpy (buf, method); | |
1313 | tmp = parse_selector (buf, &selector); | |
1314 | ||
1315 | if (tmp == NULL) | |
1316 | return NULL; | |
1317 | ||
1318 | sym = lookup_symbol (selector, block, VAR_DOMAIN, 0); | |
1319 | if (sym != NULL) | |
1320 | { | |
1321 | if (syms) | |
1322 | syms[csym] = sym; | |
1323 | csym++; | |
1324 | cdebug++; | |
1325 | } | |
1326 | ||
1327 | if (sym == NULL) | |
1328 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1329 | ||
1330 | if (msym != NULL) | |
1331 | { | |
1332 | if (syms) | |
1333 | syms[csym] = (struct symbol *)msym; | |
1334 | csym++; | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | if (syms != NULL) | |
1339 | find_methods (symtab, type, class, category, selector, | |
1340 | syms + csym, &ncsym, &ncdebug); | |
1341 | else | |
1342 | find_methods (symtab, type, class, category, selector, | |
1343 | NULL, &ncsym, &ncdebug); | |
1344 | ||
1345 | /* If we didn't find any methods, just return. */ | |
1346 | if (ncsym == 0 && ncdebug == 0) | |
1347 | return method; | |
1348 | ||
1349 | /* Take debug symbols from the second batch of symbols and swap them | |
1350 | * with debug symbols from the first batch. Repeat until either the | |
1351 | * second section is out of debug symbols or the first section is | |
1352 | * full of debug symbols. Either way we have all debug symbols | |
1353 | * packed to the beginning of the buffer. | |
1354 | */ | |
1355 | ||
1356 | if (syms != NULL) | |
1357 | { | |
1358 | while ((cdebug < csym) && (ncdebug > 0)) | |
1359 | { | |
1360 | struct symbol *s = NULL; | |
1361 | /* First non-debugging symbol. */ | |
1362 | unsigned int i = cdebug; | |
1363 | /* Last of second batch of debug symbols. */ | |
1364 | unsigned int j = csym + ncdebug - 1; | |
1365 | ||
1366 | s = syms[j]; | |
1367 | syms[j] = syms[i]; | |
1368 | syms[i] = s; | |
1369 | ||
1370 | /* We've moved a symbol from the second debug section to the | |
1371 | first one. */ | |
1372 | cdebug++; | |
1373 | ncdebug--; | |
1374 | } | |
1375 | } | |
1376 | ||
1377 | csym += ncsym; | |
1378 | cdebug += ncdebug; | |
1379 | ||
1380 | if (nsym != NULL) | |
1381 | *nsym = csym; | |
1382 | if (ndebug != NULL) | |
1383 | *ndebug = cdebug; | |
1384 | ||
1385 | if (syms == NULL) | |
1386 | return method + (tmp - buf); | |
1387 | ||
1388 | if (csym > 1) | |
1389 | { | |
1390 | /* Sort debuggable symbols. */ | |
1391 | if (cdebug > 1) | |
1392 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), | |
1393 | compare_classes); | |
1394 | ||
1395 | /* Sort minimal_symbols. */ | |
1396 | if ((csym - cdebug) > 1) | |
1397 | qsort (&syms[cdebug], csym - cdebug, | |
1398 | sizeof (struct minimal_symbol *), compare_classes); | |
1399 | } | |
1400 | /* Terminate the sym_arr list. */ | |
1401 | syms[csym] = 0; | |
1402 | ||
1403 | return method + (tmp - buf); | |
1404 | } | |
1405 | ||
1406 | static void | |
1407 | print_object_command (char *args, int from_tty) | |
1408 | { | |
1409 | struct value *object, *function, *description; | |
1410 | CORE_ADDR string_addr, object_addr; | |
1411 | int i = 0; | |
1412 | gdb_byte c = 0; | |
1413 | ||
1414 | if (!args || !*args) | |
1415 | error ( | |
1416 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
1417 | ||
1418 | { | |
1419 | struct expression *expr = parse_expression (args); | |
1420 | struct cleanup *old_chain = | |
1421 | make_cleanup (free_current_contents, &expr); | |
1422 | int pc = 0; | |
1423 | ||
1424 | object = evaluate_subexp (builtin_type (expr->gdbarch)->builtin_data_ptr, | |
1425 | expr, &pc, EVAL_NORMAL); | |
1426 | do_cleanups (old_chain); | |
1427 | } | |
1428 | ||
1429 | /* Validate the address for sanity. */ | |
1430 | object_addr = value_as_long (object); | |
1431 | read_memory (object_addr, &c, 1); | |
1432 | ||
1433 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); | |
1434 | if (function == NULL) | |
1435 | error (_("Unable to locate _NSPrintForDebugger in child process")); | |
1436 | ||
1437 | description = call_function_by_hand (function, 1, &object); | |
1438 | ||
1439 | string_addr = value_as_long (description); | |
1440 | if (string_addr == 0) | |
1441 | error (_("object returns null description")); | |
1442 | ||
1443 | read_memory (string_addr + i++, &c, 1); | |
1444 | if (c != 0) | |
1445 | do | |
1446 | { /* Read and print characters up to EOS. */ | |
1447 | QUIT; | |
1448 | printf_filtered ("%c", c); | |
1449 | read_memory (string_addr + i++, &c, 1); | |
1450 | } while (c != 0); | |
1451 | else | |
1452 | printf_filtered(_("<object returns empty description>")); | |
1453 | printf_filtered ("\n"); | |
1454 | } | |
1455 | ||
1456 | /* The data structure 'methcalls' is used to detect method calls (thru | |
1457 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1458 | * and ultimately find the method being called. | |
1459 | */ | |
1460 | ||
1461 | struct objc_methcall { | |
1462 | char *name; | |
1463 | /* Return instance method to be called. */ | |
1464 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); | |
1465 | /* Start of pc range corresponding to method invocation. */ | |
1466 | CORE_ADDR begin; | |
1467 | /* End of pc range corresponding to method invocation. */ | |
1468 | CORE_ADDR end; | |
1469 | }; | |
1470 | ||
1471 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1472 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1473 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1474 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1475 | ||
1476 | static struct objc_methcall methcalls[] = { | |
1477 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1478 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1479 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1480 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1481 | { "_objc_getClass", NULL, 0, 0}, | |
1482 | { "_objc_getMetaClass", NULL, 0, 0} | |
1483 | }; | |
1484 | ||
1485 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1486 | ||
1487 | /* The following function, "find_objc_msgsend", fills in the data | |
1488 | * structure "objc_msgs" by finding the addresses of each of the | |
1489 | * (currently four) functions that it holds (of which objc_msgSend is | |
1490 | * the first). This must be called each time symbols are loaded, in | |
1491 | * case the functions have moved for some reason. | |
1492 | */ | |
1493 | ||
1494 | static void | |
1495 | find_objc_msgsend (void) | |
1496 | { | |
1497 | unsigned int i; | |
1498 | for (i = 0; i < nmethcalls; i++) { | |
1499 | ||
1500 | struct minimal_symbol *func; | |
1501 | ||
1502 | /* Try both with and without underscore. */ | |
1503 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); | |
1504 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1505 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1506 | } | |
1507 | if (func == NULL) { | |
1508 | methcalls[i].begin = 0; | |
1509 | methcalls[i].end = 0; | |
1510 | continue; | |
1511 | } | |
1512 | ||
1513 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1514 | do { | |
1515 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1516 | } while (methcalls[i].begin == methcalls[i].end); | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | /* find_objc_msgcall (replaces pc_off_limits) | |
1521 | * | |
1522 | * ALL that this function now does is to determine whether the input | |
1523 | * address ("pc") is the address of one of the Objective-C message | |
1524 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and | |
1525 | * if so, it returns the address of the method that will be called. | |
1526 | * | |
1527 | * The old function "pc_off_limits" used to do a lot of other things | |
1528 | * in addition, such as detecting shared library jump stubs and | |
1529 | * returning the address of the shlib function that would be called. | |
1530 | * That functionality has been moved into the gdbarch_skip_trampoline_code and | |
1531 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- | |
1532 | * dependent modules. | |
1533 | */ | |
1534 | ||
1535 | struct objc_submethod_helper_data { | |
1536 | int (*f) (CORE_ADDR, CORE_ADDR *); | |
1537 | CORE_ADDR pc; | |
1538 | CORE_ADDR *new_pc; | |
1539 | }; | |
1540 | ||
1541 | static int | |
1542 | find_objc_msgcall_submethod_helper (void * arg) | |
1543 | { | |
1544 | struct objc_submethod_helper_data *s = | |
1545 | (struct objc_submethod_helper_data *) arg; | |
1546 | ||
1547 | if (s->f (s->pc, s->new_pc) == 0) | |
1548 | return 1; | |
1549 | else | |
1550 | return 0; | |
1551 | } | |
1552 | ||
1553 | static int | |
1554 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), | |
1555 | CORE_ADDR pc, | |
1556 | CORE_ADDR *new_pc) | |
1557 | { | |
1558 | struct objc_submethod_helper_data s; | |
1559 | ||
1560 | s.f = f; | |
1561 | s.pc = pc; | |
1562 | s.new_pc = new_pc; | |
1563 | ||
1564 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
1565 | (void *) &s, | |
1566 | "Unable to determine target of Objective-C method call (ignoring):\n", | |
1567 | RETURN_MASK_ALL) == 0) | |
1568 | return 1; | |
1569 | else | |
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | int | |
1574 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1575 | { | |
1576 | unsigned int i; | |
1577 | ||
1578 | find_objc_msgsend (); | |
1579 | if (new_pc != NULL) | |
1580 | { | |
1581 | *new_pc = 0; | |
1582 | } | |
1583 | ||
1584 | for (i = 0; i < nmethcalls; i++) | |
1585 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1586 | { | |
1587 | if (methcalls[i].stop_at != NULL) | |
1588 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1589 | pc, new_pc); | |
1590 | else | |
1591 | return 0; | |
1592 | } | |
1593 | ||
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | extern initialize_file_ftype _initialize_objc_language; /* -Wmissing-prototypes */ | |
1598 | ||
1599 | void | |
1600 | _initialize_objc_language (void) | |
1601 | { | |
1602 | add_language (&objc_language_defn); | |
1603 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ | |
1604 | _("All Objective-C selectors, or those matching REGEXP.")); | |
1605 | add_info ("classes", classes_info, /* INFO CLASSES command. */ | |
1606 | _("All Objective-C classes, or those matching REGEXP.")); | |
1607 | add_com ("print-object", class_vars, print_object_command, | |
1608 | _("Ask an Objective-C object to print itself.")); | |
1609 | add_com_alias ("po", "print-object", class_vars, 1); | |
1610 | } | |
1611 | ||
1612 | static void | |
1613 | read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr, | |
1614 | struct objc_method *method) | |
1615 | { | |
1616 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1617 | method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order); | |
1618 | method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1619 | method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1620 | } | |
1621 | ||
1622 | static unsigned long | |
1623 | read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr) | |
1624 | { | |
1625 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1626 | return read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1627 | } | |
1628 | ||
1629 | static void | |
1630 | read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr, | |
1631 | unsigned long num, struct objc_method *method) | |
1632 | { | |
1633 | gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr)); | |
1634 | read_objc_method (gdbarch, addr + 8 + (12 * num), method); | |
1635 | } | |
1636 | ||
1637 | static void | |
1638 | read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr, | |
1639 | struct objc_object *object) | |
1640 | { | |
1641 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1642 | object->isa = read_memory_unsigned_integer (addr, 4, byte_order); | |
1643 | } | |
1644 | ||
1645 | static void | |
1646 | read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr, | |
1647 | struct objc_super *super) | |
1648 | { | |
1649 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1650 | super->receiver = read_memory_unsigned_integer (addr, 4, byte_order); | |
1651 | super->class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1652 | }; | |
1653 | ||
1654 | static void | |
1655 | read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr, | |
1656 | struct objc_class *class) | |
1657 | { | |
1658 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1659 | class->isa = read_memory_unsigned_integer (addr, 4, byte_order); | |
1660 | class->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1661 | class->name = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1662 | class->version = read_memory_unsigned_integer (addr + 12, 4, byte_order); | |
1663 | class->info = read_memory_unsigned_integer (addr + 16, 4, byte_order); | |
1664 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4, byte_order); | |
1665 | class->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order); | |
1666 | class->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order); | |
1667 | class->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order); | |
1668 | class->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order); | |
1669 | } | |
1670 | ||
1671 | static CORE_ADDR | |
1672 | find_implementation_from_class (struct gdbarch *gdbarch, | |
1673 | CORE_ADDR class, CORE_ADDR sel) | |
1674 | { | |
1675 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
1676 | CORE_ADDR subclass = class; | |
1677 | ||
1678 | while (subclass != 0) | |
1679 | { | |
1680 | ||
1681 | struct objc_class class_str; | |
1682 | unsigned mlistnum = 0; | |
1683 | ||
1684 | read_objc_class (gdbarch, subclass, &class_str); | |
1685 | ||
1686 | for (;;) | |
1687 | { | |
1688 | CORE_ADDR mlist; | |
1689 | unsigned long nmethods; | |
1690 | unsigned long i; | |
1691 | ||
1692 | mlist = read_memory_unsigned_integer (class_str.methods + | |
1693 | (4 * mlistnum), | |
1694 | 4, byte_order); | |
1695 | if (mlist == 0) | |
1696 | break; | |
1697 | ||
1698 | nmethods = read_objc_methlist_nmethods (gdbarch, mlist); | |
1699 | ||
1700 | for (i = 0; i < nmethods; i++) | |
1701 | { | |
1702 | struct objc_method meth_str; | |
1703 | read_objc_methlist_method (gdbarch, mlist, i, &meth_str); | |
1704 | ||
1705 | #if 0 | |
1706 | fprintf (stderr, | |
1707 | "checking method 0x%lx against selector 0x%lx\n", | |
1708 | meth_str.name, sel); | |
1709 | #endif | |
1710 | ||
1711 | if (meth_str.name == sel) | |
1712 | /* FIXME: hppa arch was doing a pointer dereference | |
1713 | here. There needs to be a better way to do that. */ | |
1714 | return meth_str.imp; | |
1715 | } | |
1716 | mlistnum++; | |
1717 | } | |
1718 | subclass = class_str.super_class; | |
1719 | } | |
1720 | ||
1721 | return 0; | |
1722 | } | |
1723 | ||
1724 | static CORE_ADDR | |
1725 | find_implementation (struct gdbarch *gdbarch, | |
1726 | CORE_ADDR object, CORE_ADDR sel) | |
1727 | { | |
1728 | struct objc_object ostr; | |
1729 | ||
1730 | if (object == 0) | |
1731 | return 0; | |
1732 | read_objc_object (gdbarch, object, &ostr); | |
1733 | if (ostr.isa == 0) | |
1734 | return 0; | |
1735 | ||
1736 | return find_implementation_from_class (gdbarch, ostr.isa, sel); | |
1737 | } | |
1738 | ||
1739 | static int | |
1740 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1741 | { | |
1742 | struct frame_info *frame = get_current_frame (); | |
1743 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1744 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1745 | ||
1746 | CORE_ADDR object; | |
1747 | CORE_ADDR sel; | |
1748 | CORE_ADDR res; | |
1749 | ||
1750 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); | |
1751 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
1752 | ||
1753 | res = find_implementation (gdbarch, object, sel); | |
1754 | if (new_pc != 0) | |
1755 | *new_pc = res; | |
1756 | if (res == 0) | |
1757 | return 1; | |
1758 | return 0; | |
1759 | } | |
1760 | ||
1761 | static int | |
1762 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1763 | { | |
1764 | struct frame_info *frame = get_current_frame (); | |
1765 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1766 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1767 | ||
1768 | CORE_ADDR object; | |
1769 | CORE_ADDR sel; | |
1770 | CORE_ADDR res; | |
1771 | ||
1772 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
1773 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
1774 | ||
1775 | res = find_implementation (gdbarch, object, sel); | |
1776 | if (new_pc != 0) | |
1777 | *new_pc = res; | |
1778 | if (res == 0) | |
1779 | return 1; | |
1780 | return 0; | |
1781 | } | |
1782 | ||
1783 | static int | |
1784 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1785 | { | |
1786 | struct frame_info *frame = get_current_frame (); | |
1787 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1788 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1789 | ||
1790 | struct objc_super sstr; | |
1791 | ||
1792 | CORE_ADDR super; | |
1793 | CORE_ADDR sel; | |
1794 | CORE_ADDR res; | |
1795 | ||
1796 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); | |
1797 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
1798 | ||
1799 | read_objc_super (gdbarch, super, &sstr); | |
1800 | if (sstr.class == 0) | |
1801 | return 0; | |
1802 | ||
1803 | res = find_implementation_from_class (gdbarch, sstr.class, sel); | |
1804 | if (new_pc != 0) | |
1805 | *new_pc = res; | |
1806 | if (res == 0) | |
1807 | return 1; | |
1808 | return 0; | |
1809 | } | |
1810 | ||
1811 | static int | |
1812 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1813 | { | |
1814 | struct frame_info *frame = get_current_frame (); | |
1815 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1816 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1817 | ||
1818 | struct objc_super sstr; | |
1819 | ||
1820 | CORE_ADDR super; | |
1821 | CORE_ADDR sel; | |
1822 | CORE_ADDR res; | |
1823 | ||
1824 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
1825 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
1826 | ||
1827 | read_objc_super (gdbarch, super, &sstr); | |
1828 | if (sstr.class == 0) | |
1829 | return 0; | |
1830 | ||
1831 | res = find_implementation_from_class (gdbarch, sstr.class, sel); | |
1832 | if (new_pc != 0) | |
1833 | *new_pc = res; | |
1834 | if (res == 0) | |
1835 | return 1; | |
1836 | return 0; | |
1837 | } | |
1838 | ||
1839 | void | |
1840 | _initialize_objc_lang (void) | |
1841 | { | |
1842 | objc_objfile_data = register_objfile_data (); | |
1843 | } |