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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
3666a048 | 3 | Copyright (C) 2002-2021 Free Software Foundation, Inc. |
b81654f1 | 4 | |
437666f8 AC |
5 | Contributed by Apple Computer, Inc. |
6 | Written by Michael Snyder. | |
b81654f1 | 7 | |
437666f8 | 8 | This file is part of GDB. |
b81654f1 | 9 | |
437666f8 AC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
437666f8 AC |
13 | (at your option) any later version. |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
b81654f1 MS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "parser-defs.h" | |
28 | #include "language.h" | |
a53b64ea | 29 | #include "varobj.h" |
d2e6263c | 30 | #include "c-lang.h" |
b81654f1 MS |
31 | #include "objc-lang.h" |
32 | #include "complaints.h" | |
33 | #include "value.h" | |
34 | #include "symfile.h" | |
35 | #include "objfiles.h" | |
55f6301a | 36 | #include "target.h" |
b81654f1 MS |
37 | #include "gdbcore.h" |
38 | #include "gdbcmd.h" | |
39 | #include "frame.h" | |
40 | #include "gdb_regex.h" | |
41 | #include "regcache.h" | |
fe898f56 | 42 | #include "block.h" |
04714b91 | 43 | #include "infcall.h" |
4e45ca2e | 44 | #include "valprint.h" |
529480d0 | 45 | #include "cli/cli-utils.h" |
d182f279 | 46 | #include "c-exp.h" |
b81654f1 MS |
47 | |
48 | #include <ctype.h> | |
9b2f8581 | 49 | #include <algorithm> |
b81654f1 MS |
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; | |
fe978cb0 | 70 | CORE_ADDR theclass; |
b81654f1 MS |
71 | }; |
72 | ||
73 | struct objc_method { | |
74 | CORE_ADDR name; | |
75 | CORE_ADDR types; | |
76 | CORE_ADDR imp; | |
77 | }; | |
78 | ||
4c58e337 | 79 | static const struct objfile_key<unsigned int> objc_objfile_data; |
57a9e6af | 80 | |
d2e6263c MS |
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. */ | |
b81654f1 MS |
84 | |
85 | struct symbol * | |
a121b7c1 | 86 | lookup_struct_typedef (const char *name, const struct block *block, int noerr) |
b81654f1 | 87 | { |
f86f5ca3 | 88 | struct symbol *sym; |
b81654f1 | 89 | |
d12307c1 | 90 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
b81654f1 MS |
91 | |
92 | if (sym == NULL) | |
93 | { | |
94 | if (noerr) | |
95 | return 0; | |
96 | else | |
8a3fe4f8 | 97 | error (_("No struct type named %s."), name); |
b81654f1 | 98 | } |
78134374 | 99 | if (SYMBOL_TYPE (sym)->code () != TYPE_CODE_STRUCT) |
b81654f1 MS |
100 | { |
101 | if (noerr) | |
102 | return 0; | |
103 | else | |
8a3fe4f8 | 104 | error (_("This context has class, union or enum %s, not a struct."), |
d2e6263c | 105 | name); |
b81654f1 MS |
106 | } |
107 | return sym; | |
108 | } | |
109 | ||
110 | CORE_ADDR | |
a121b7c1 | 111 | lookup_objc_class (struct gdbarch *gdbarch, const char *classname) |
b81654f1 | 112 | { |
3b7538c0 | 113 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
114 | struct value * function, *classval; |
115 | ||
55f6301a | 116 | if (! target_has_execution ()) |
b81654f1 | 117 | { |
d2e6263c | 118 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
119 | return 0; |
120 | } | |
121 | ||
3b7344d5 | 122 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0).minsym) |
3e3b026f | 123 | function = find_function_in_inferior("objc_lookUpClass", NULL); |
3b7344d5 | 124 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0).minsym) |
3e3b026f | 125 | function = find_function_in_inferior("objc_lookup_class", NULL); |
b81654f1 MS |
126 | else |
127 | { | |
b98664d3 | 128 | complaint (_("no way to lookup Objective-C classes")); |
b81654f1 MS |
129 | return 0; |
130 | } | |
131 | ||
3b7538c0 | 132 | classval = value_string (classname, strlen (classname) + 1, char_type); |
b81654f1 | 133 | classval = value_coerce_array (classval); |
7022349d PA |
134 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, |
135 | NULL, | |
e71585ff | 136 | classval)); |
b81654f1 MS |
137 | } |
138 | ||
c253954e | 139 | CORE_ADDR |
a121b7c1 | 140 | lookup_child_selector (struct gdbarch *gdbarch, const char *selname) |
b81654f1 | 141 | { |
3b7538c0 | 142 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
143 | struct value * function, *selstring; |
144 | ||
55f6301a | 145 | if (! target_has_execution ()) |
b81654f1 | 146 | { |
d2e6263c | 147 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
148 | return 0; |
149 | } | |
150 | ||
3b7344d5 | 151 | if (lookup_minimal_symbol("sel_getUid", 0, 0).minsym) |
3e3b026f | 152 | function = find_function_in_inferior("sel_getUid", NULL); |
3b7344d5 | 153 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0).minsym) |
3e3b026f | 154 | function = find_function_in_inferior("sel_get_any_uid", NULL); |
b81654f1 MS |
155 | else |
156 | { | |
b98664d3 | 157 | complaint (_("no way to lookup Objective-C selectors")); |
b81654f1 MS |
158 | return 0; |
159 | } | |
160 | ||
d2e6263c | 161 | selstring = value_coerce_array (value_string (selname, |
0df8b418 MS |
162 | strlen (selname) + 1, |
163 | char_type)); | |
e71585ff | 164 | return value_as_long (call_function_by_hand (function, NULL, selstring)); |
b81654f1 MS |
165 | } |
166 | ||
167 | struct value * | |
8e20b4be | 168 | value_nsstring (struct gdbarch *gdbarch, const char *ptr, int len) |
b81654f1 | 169 | { |
3b7538c0 | 170 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
171 | struct value *stringValue[3]; |
172 | struct value *function, *nsstringValue; | |
173 | struct symbol *sym; | |
174 | struct type *type; | |
175 | ||
55f6301a | 176 | if (!target_has_execution ()) |
d2e6263c | 177 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 | 178 | |
3b7538c0 | 179 | stringValue[2] = value_string(ptr, len, char_type); |
b81654f1 | 180 | stringValue[2] = value_coerce_array(stringValue[2]); |
d2e6263c | 181 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
3b7344d5 | 182 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0).minsym) |
b81654f1 | 183 | { |
3b7538c0 | 184 | function = find_function_in_inferior("_NSNewStringFromCString", NULL); |
e71585ff | 185 | nsstringValue = call_function_by_hand(function, NULL, stringValue[2]); |
b81654f1 | 186 | } |
3b7344d5 | 187 | else if (lookup_minimal_symbol("istr", 0, 0).minsym) |
b81654f1 | 188 | { |
3b7538c0 | 189 | function = find_function_in_inferior("istr", NULL); |
e71585ff | 190 | nsstringValue = call_function_by_hand(function, NULL, stringValue[2]); |
b81654f1 | 191 | } |
3b7344d5 | 192 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0).minsym) |
b81654f1 | 193 | { |
3e3b026f | 194 | function |
3b7538c0 UW |
195 | = find_function_in_inferior("+[NSString stringWithCString:]", NULL); |
196 | type = builtin_type (gdbarch)->builtin_long; | |
3e3b026f | 197 | |
b81654f1 | 198 | stringValue[0] = value_from_longest |
3b7538c0 | 199 | (type, lookup_objc_class (gdbarch, "NSString")); |
b81654f1 | 200 | stringValue[1] = value_from_longest |
3b7538c0 | 201 | (type, lookup_child_selector (gdbarch, "stringWithCString:")); |
e71585ff | 202 | nsstringValue = call_function_by_hand(function, NULL, stringValue); |
b81654f1 MS |
203 | } |
204 | else | |
8a3fe4f8 | 205 | error (_("NSString: internal error -- no way to create new NSString")); |
b81654f1 | 206 | |
3e3b026f UW |
207 | sym = lookup_struct_typedef("NSString", 0, 1); |
208 | if (sym == NULL) | |
209 | sym = lookup_struct_typedef("NXString", 0, 1); | |
210 | if (sym == NULL) | |
211 | type = builtin_type (gdbarch)->builtin_data_ptr; | |
212 | else | |
213 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
214 | ||
04624583 | 215 | deprecated_set_value_type (nsstringValue, type); |
b81654f1 MS |
216 | return nsstringValue; |
217 | } | |
218 | ||
0874fd07 AB |
219 | /* Class representing the Objective-C language. */ |
220 | ||
221 | class objc_language : public language_defn | |
222 | { | |
223 | public: | |
224 | objc_language () | |
0e25e767 | 225 | : language_defn (language_objc) |
0874fd07 | 226 | { /* Nothing. */ } |
1fb314aa | 227 | |
6f7664a9 AB |
228 | /* See language.h. */ |
229 | ||
230 | const char *name () const override | |
231 | { return "objective-c"; } | |
232 | ||
233 | /* See language.h. */ | |
234 | ||
235 | const char *natural_name () const override | |
236 | { return "Objective-C"; } | |
237 | ||
e171d6f1 AB |
238 | /* See language.h. */ |
239 | ||
240 | const std::vector<const char *> &filename_extensions () const override | |
241 | { | |
242 | static const std::vector<const char *> extensions = { ".m" }; | |
243 | return extensions; | |
244 | } | |
245 | ||
1fb314aa AB |
246 | /* See language.h. */ |
247 | void language_arch_info (struct gdbarch *gdbarch, | |
248 | struct language_arch_info *lai) const override | |
249 | { | |
250 | c_language_arch_info (gdbarch, lai); | |
251 | } | |
6f827019 AB |
252 | |
253 | /* See language.h. */ | |
254 | bool sniff_from_mangled_name (const char *mangled, | |
255 | char **demangled) const override | |
256 | { | |
46fec642 | 257 | *demangled = demangle_symbol (mangled, 0); |
6f827019 AB |
258 | return *demangled != NULL; |
259 | } | |
fbfb0a46 AB |
260 | |
261 | /* See language.h. */ | |
262 | ||
46fec642 | 263 | char *demangle_symbol (const char *mangled, int options) const override; |
0a50df5d AB |
264 | |
265 | /* See language.h. */ | |
266 | ||
fbfb0a46 AB |
267 | void print_type (struct type *type, const char *varstring, |
268 | struct ui_file *stream, int show, int level, | |
269 | const struct type_print_options *flags) const override | |
270 | { | |
271 | c_print_type (type, varstring, stream, show, level, flags); | |
272 | } | |
f6eee2d0 AB |
273 | |
274 | /* See language.h. */ | |
275 | ||
276 | CORE_ADDR skip_trampoline (struct frame_info *frame, | |
277 | CORE_ADDR stop_pc) const override | |
278 | { | |
279 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
280 | CORE_ADDR real_stop_pc; | |
281 | CORE_ADDR method_stop_pc; | |
282 | ||
283 | /* Determine if we are currently in the Objective-C dispatch function. | |
284 | If so, get the address of the method function that the dispatcher | |
285 | would call and use that as the function to step into instead. Also | |
286 | skip over the trampoline for the function (if any). This is better | |
287 | for the user since they are only interested in stepping into the | |
288 | method function anyway. */ | |
289 | ||
290 | real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc); | |
291 | ||
292 | if (real_stop_pc != 0) | |
293 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
294 | else | |
295 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
296 | ||
297 | if (method_stop_pc) | |
298 | { | |
299 | real_stop_pc = gdbarch_skip_trampoline_code | |
300 | (gdbarch, frame, method_stop_pc); | |
301 | if (real_stop_pc == 0) | |
302 | real_stop_pc = method_stop_pc; | |
303 | } | |
304 | ||
305 | return real_stop_pc; | |
306 | } | |
5bae7c4e AB |
307 | |
308 | /* See language.h. */ | |
309 | ||
310 | const char *name_of_this () const override | |
311 | { return "self"; } | |
1ac14a04 AB |
312 | |
313 | /* See language.h. */ | |
314 | ||
315 | enum macro_expansion macro_expansion () const override | |
316 | { return macro_expansion_c; } | |
0874fd07 AB |
317 | }; |
318 | ||
46fec642 AB |
319 | /* See declaration of objc_language::demangle_symbol above. */ |
320 | ||
321 | char * | |
322 | objc_language::demangle_symbol (const char *mangled, int options) const | |
323 | { | |
324 | char *demangled, *cp; | |
325 | ||
326 | if (mangled[0] == '_' | |
327 | && (mangled[1] == 'i' || mangled[1] == 'c') | |
328 | && mangled[2] == '_') | |
329 | { | |
330 | cp = demangled = (char *) xmalloc (strlen (mangled) + 2); | |
331 | ||
332 | if (mangled[1] == 'i') | |
333 | *cp++ = '-'; /* for instance method */ | |
334 | else | |
335 | *cp++ = '+'; /* for class method */ | |
336 | ||
337 | *cp++ = '['; /* opening left brace */ | |
338 | strcpy(cp, mangled+3); /* Tack on the rest of the mangled name. */ | |
339 | ||
340 | while (*cp != '\0' && *cp == '_') | |
341 | cp++; /* Skip any initial underbars in class | |
342 | name. */ | |
343 | ||
344 | cp = strchr(cp, '_'); | |
345 | if (cp == nullptr) /* Find first non-initial underbar. */ | |
346 | { | |
347 | xfree(demangled); /* not mangled name */ | |
348 | return nullptr; | |
349 | } | |
350 | if (cp[1] == '_') /* Easy case: no category name. */ | |
351 | { | |
352 | *cp++ = ' '; /* Replace two '_' with one ' '. */ | |
353 | strcpy(cp, mangled + (cp - demangled) + 2); | |
354 | } | |
355 | else | |
356 | { | |
357 | *cp++ = '('; /* Less easy case: category name. */ | |
358 | cp = strchr(cp, '_'); | |
359 | if (cp == nullptr) | |
360 | { | |
361 | xfree(demangled); /* not mangled name */ | |
362 | return nullptr; | |
363 | } | |
364 | *cp++ = ')'; | |
365 | *cp++ = ' '; /* Overwriting 1st char of method name... */ | |
366 | strcpy(cp, mangled + (cp - demangled)); /* Get it back. */ | |
367 | } | |
368 | ||
369 | while (*cp != '\0' && *cp == '_') | |
370 | cp++; /* Skip any initial underbars in | |
371 | method name. */ | |
372 | ||
373 | for (; *cp != '\0'; cp++) | |
374 | if (*cp == '_') | |
375 | *cp = ':'; /* Replace remaining '_' with ':'. */ | |
376 | ||
377 | *cp++ = ']'; /* closing right brace */ | |
378 | *cp++ = 0; /* string terminator */ | |
379 | return demangled; | |
380 | } | |
381 | else | |
382 | return nullptr; /* Not an objc mangled name. */ | |
383 | } | |
384 | ||
0874fd07 AB |
385 | /* Single instance of the class representing the Objective-C language. */ |
386 | ||
387 | static objc_language objc_language_defn; | |
388 | ||
b81654f1 MS |
389 | /* |
390 | * ObjC: | |
0df8b418 | 391 | * Following functions help construct Objective-C message calls. |
b81654f1 MS |
392 | */ |
393 | ||
d2e6263c | 394 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
395 | { |
396 | struct selname *next; | |
397 | char *msglist_sel; | |
398 | int msglist_len; | |
399 | }; | |
400 | ||
401 | static int msglist_len; | |
402 | static struct selname *selname_chain; | |
403 | static char *msglist_sel; | |
404 | ||
405 | void | |
406 | start_msglist(void) | |
407 | { | |
8d749320 | 408 | struct selname *newobj = XNEW (struct selname); |
b81654f1 | 409 | |
fe978cb0 PA |
410 | newobj->next = selname_chain; |
411 | newobj->msglist_len = msglist_len; | |
412 | newobj->msglist_sel = msglist_sel; | |
b81654f1 MS |
413 | msglist_len = 0; |
414 | msglist_sel = (char *)xmalloc(1); | |
415 | *msglist_sel = 0; | |
fe978cb0 | 416 | selname_chain = newobj; |
b81654f1 MS |
417 | } |
418 | ||
419 | void | |
420 | add_msglist(struct stoken *str, int addcolon) | |
421 | { | |
d7561cbb KS |
422 | char *s; |
423 | const char *p; | |
b81654f1 MS |
424 | int len, plen; |
425 | ||
5cc80db3 MS |
426 | if (str == 0) /* Unnamed arg, or... */ |
427 | { | |
428 | if (addcolon == 0) /* variable number of args. */ | |
429 | { | |
430 | msglist_len++; | |
431 | return; | |
432 | } | |
433 | p = ""; | |
434 | plen = 0; | |
435 | } | |
436 | else | |
437 | { | |
438 | p = str->ptr; | |
439 | plen = str->length; | |
b81654f1 | 440 | } |
b81654f1 MS |
441 | len = plen + strlen(msglist_sel) + 2; |
442 | s = (char *)xmalloc(len); | |
443 | strcpy(s, msglist_sel); | |
444 | strncat(s, p, plen); | |
7248f48e | 445 | xfree(msglist_sel); |
b81654f1 | 446 | msglist_sel = s; |
5cc80db3 MS |
447 | if (addcolon) |
448 | { | |
449 | s[len-2] = ':'; | |
450 | s[len-1] = 0; | |
451 | msglist_len++; | |
452 | } | |
453 | else | |
b81654f1 MS |
454 | s[len-2] = '\0'; |
455 | } | |
456 | ||
457 | int | |
410a0ff2 | 458 | end_msglist (struct parser_state *ps) |
b81654f1 | 459 | { |
f86f5ca3 PH |
460 | int val = msglist_len; |
461 | struct selname *sel = selname_chain; | |
462 | char *p = msglist_sel; | |
c253954e | 463 | CORE_ADDR selid; |
b81654f1 | 464 | |
d182f279 TT |
465 | std::vector<expr::operation_up> args = ps->pop_vector (val); |
466 | expr::operation_up target = ps->pop (); | |
467 | ||
b81654f1 MS |
468 | selname_chain = sel->next; |
469 | msglist_len = sel->msglist_len; | |
470 | msglist_sel = sel->msglist_sel; | |
fa9f5be6 | 471 | selid = lookup_child_selector (ps->gdbarch (), p); |
b81654f1 | 472 | if (!selid) |
8a3fe4f8 | 473 | error (_("Can't find selector \"%s\""), p); |
d182f279 TT |
474 | |
475 | ps->push_new<expr::objc_msgcall_operation> (selid, std::move (target), | |
476 | std::move (args)); | |
477 | ||
7248f48e | 478 | xfree(p); |
7248f48e | 479 | xfree(sel); |
b81654f1 MS |
480 | |
481 | return val; | |
482 | } | |
483 | ||
484 | /* | |
0d5cff50 | 485 | * Function: specialcmp (const char *a, const char *b) |
b81654f1 MS |
486 | * |
487 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 488 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
489 | */ |
490 | ||
b9362cc7 | 491 | static int |
0d5cff50 | 492 | specialcmp (const char *a, const char *b) |
b81654f1 MS |
493 | { |
494 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
495 | { | |
496 | if (*a != *b) | |
497 | return *a - *b; | |
498 | a++, b++; | |
499 | } | |
500 | if (*a && *a != ' ' && *a != ']') | |
0df8b418 | 501 | return 1; /* a is longer therefore greater. */ |
b81654f1 | 502 | if (*b && *b != ' ' && *b != ']') |
0df8b418 MS |
503 | return -1; /* a is shorter therefore lesser. */ |
504 | return 0; /* a and b are identical. */ | |
b81654f1 MS |
505 | } |
506 | ||
507 | /* | |
36e53c63 | 508 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 509 | * |
d2e6263c MS |
510 | * Comparison function for use with qsort. Arguments are symbols or |
511 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
512 | */ |
513 | ||
514 | static int | |
36e53c63 | 515 | compare_selectors (const void *a, const void *b) |
b81654f1 | 516 | { |
0d5cff50 | 517 | const char *aname, *bname; |
b81654f1 | 518 | |
987012b8 CB |
519 | aname = (*(struct symbol **) a)->print_name (); |
520 | bname = (*(struct symbol **) b)->print_name (); | |
7248f48e | 521 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 522 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 523 | |
7248f48e AF |
524 | aname = strchr(aname, ' '); |
525 | bname = strchr(bname, ' '); | |
526 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 527 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
528 | |
529 | return specialcmp (aname+1, bname+1); | |
530 | } | |
531 | ||
532 | /* | |
533 | * Function: selectors_info (regexp, from_tty) | |
534 | * | |
d2e6263c MS |
535 | * Implements the "Info selectors" command. Takes an optional regexp |
536 | * arg. Lists all objective c selectors that match the regexp. Works | |
537 | * by grepping thru all symbols for objective c methods. Output list | |
538 | * is sorted and uniqued. | |
b81654f1 MS |
539 | */ |
540 | ||
541 | static void | |
1d12d88f | 542 | info_selectors_command (const char *regexp, int from_tty) |
b81654f1 | 543 | { |
0d5cff50 | 544 | const char *name; |
b81654f1 MS |
545 | char *val; |
546 | int matches = 0; | |
547 | int maxlen = 0; | |
548 | int ix; | |
549 | char myregexp[2048]; | |
550 | char asel[256]; | |
551 | struct symbol **sym_arr; | |
552 | int plusminus = 0; | |
553 | ||
554 | if (regexp == NULL) | |
d2e6263c | 555 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
556 | else |
557 | { | |
d2e6263c MS |
558 | if (*regexp == '+' || *regexp == '-') |
559 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
560 | plusminus = *regexp++; |
561 | while (*regexp == ' ' || *regexp == '\t') | |
562 | regexp++; | |
563 | } | |
564 | if (*regexp == '\0') | |
565 | strcpy(myregexp, ".*]"); | |
566 | else | |
567 | { | |
a9dc8dcc | 568 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 | 569 | if (sizeof (myregexp) < strlen (regexp) + 4) |
20937029 JK |
570 | error (_("Regexp is too long: %s"), regexp); |
571 | strcpy(myregexp, regexp); | |
b81654f1 MS |
572 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ |
573 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
574 | else | |
575 | strcat(myregexp, ".*]"); | |
576 | } | |
577 | } | |
578 | ||
579 | if (regexp != NULL) | |
5e488a7b AC |
580 | { |
581 | val = re_comp (myregexp); | |
582 | if (val != 0) | |
8a3fe4f8 | 583 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 584 | } |
b81654f1 | 585 | |
d2e6263c | 586 | /* First time thru is JUST to get max length and count. */ |
2030c079 | 587 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 588 | { |
7932255d | 589 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
b81654f1 | 590 | { |
5325b9bf | 591 | QUIT; |
c9d95fa3 | 592 | name = msymbol->natural_name (); |
5325b9bf TT |
593 | if (name |
594 | && (name[0] == '-' || name[0] == '+') | |
595 | && name[1] == '[') /* Got a method name. */ | |
50412521 | 596 | { |
5325b9bf TT |
597 | /* Filter for class/instance methods. */ |
598 | if (plusminus && name[0] != plusminus) | |
599 | continue; | |
600 | /* Find selector part. */ | |
601 | name = (char *) strchr (name+2, ' '); | |
602 | if (name == NULL) | |
603 | { | |
604 | complaint (_("Bad method name '%s'"), | |
c9d95fa3 | 605 | msymbol->natural_name ()); |
5325b9bf TT |
606 | continue; |
607 | } | |
608 | if (regexp == NULL || re_exec(++name) != 0) | |
609 | { | |
610 | const char *mystart = name; | |
611 | const char *myend = strchr (mystart, ']'); | |
b81654f1 | 612 | |
5325b9bf TT |
613 | if (myend && (myend - mystart > maxlen)) |
614 | maxlen = myend - mystart; /* Get longest selector. */ | |
615 | matches++; | |
616 | } | |
b81654f1 MS |
617 | } |
618 | } | |
619 | } | |
620 | if (matches) | |
621 | { | |
a3f17187 | 622 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
623 | regexp ? regexp : "*"); |
624 | ||
8d749320 | 625 | sym_arr = XALLOCAVEC (struct symbol *, matches); |
b81654f1 | 626 | matches = 0; |
2030c079 | 627 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 628 | { |
7932255d | 629 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
b81654f1 | 630 | { |
5325b9bf | 631 | QUIT; |
c9d95fa3 | 632 | name = msymbol->natural_name (); |
5325b9bf TT |
633 | if (name && |
634 | (name[0] == '-' || name[0] == '+') && | |
635 | name[1] == '[') /* Got a method name. */ | |
636 | { | |
637 | /* Filter for class/instance methods. */ | |
638 | if (plusminus && name[0] != plusminus) | |
639 | continue; | |
640 | /* Find selector part. */ | |
641 | name = (char *) strchr(name+2, ' '); | |
642 | if (regexp == NULL || re_exec(++name) != 0) | |
643 | sym_arr[matches++] = (struct symbol *) msymbol; | |
644 | } | |
b81654f1 MS |
645 | } |
646 | } | |
647 | ||
648 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
649 | compare_selectors); | |
d2e6263c MS |
650 | /* Prevent compare on first iteration. */ |
651 | asel[0] = 0; | |
652 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
653 | { |
654 | char *p = asel; | |
655 | ||
656 | QUIT; | |
987012b8 | 657 | name = sym_arr[ix]->natural_name (); |
b81654f1 MS |
658 | name = strchr (name, ' ') + 1; |
659 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 660 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 661 | |
d2e6263c MS |
662 | /* Copy selector part. */ |
663 | while (*name && *name != ']') | |
b81654f1 MS |
664 | *p++ = *name++; |
665 | *p++ = '\0'; | |
d2e6263c MS |
666 | /* Print in columns. */ |
667 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
668 | } |
669 | begin_line(); | |
670 | } | |
671 | else | |
0df8b418 MS |
672 | printf_filtered (_("No selectors matching \"%s\"\n"), |
673 | regexp ? regexp : "*"); | |
b81654f1 MS |
674 | } |
675 | ||
676 | /* | |
36e53c63 | 677 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 678 | * |
d2e6263c MS |
679 | * Comparison function for use with qsort. Arguments are symbols or |
680 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
681 | */ |
682 | ||
683 | static int | |
36e53c63 | 684 | compare_classes (const void *a, const void *b) |
b81654f1 | 685 | { |
0d5cff50 | 686 | const char *aname, *bname; |
b81654f1 | 687 | |
987012b8 CB |
688 | aname = (*(struct symbol **) a)->print_name (); |
689 | bname = (*(struct symbol **) b)->print_name (); | |
7248f48e | 690 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 691 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
692 | |
693 | return specialcmp (aname+1, bname+1); | |
694 | } | |
695 | ||
696 | /* | |
697 | * Function: classes_info(regexp, from_tty) | |
698 | * | |
699 | * Implements the "info classes" command for objective c classes. | |
700 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
701 | * Works by grepping thru the list of objective c methods. List will |
702 | * be sorted and uniqued (since one class may have many methods). | |
703 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
704 | */ |
705 | ||
706 | static void | |
1d12d88f | 707 | info_classes_command (const char *regexp, int from_tty) |
b81654f1 | 708 | { |
0d5cff50 | 709 | const char *name; |
b81654f1 MS |
710 | char *val; |
711 | int matches = 0; | |
712 | int maxlen = 0; | |
713 | int ix; | |
714 | char myregexp[2048]; | |
715 | char aclass[256]; | |
716 | struct symbol **sym_arr; | |
717 | ||
718 | if (regexp == NULL) | |
d2e6263c | 719 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
720 | else |
721 | { | |
a9dc8dcc | 722 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 MS |
723 | if (sizeof (myregexp) < strlen (regexp) + 4) |
724 | error (_("Regexp is too long: %s"), regexp); | |
b81654f1 MS |
725 | strcpy(myregexp, regexp); |
726 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 727 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
728 | myregexp[strlen(myregexp) - 1] = ' '; |
729 | else | |
730 | strcat(myregexp, ".* "); | |
731 | } | |
732 | ||
733 | if (regexp != NULL) | |
5e488a7b AC |
734 | { |
735 | val = re_comp (myregexp); | |
736 | if (val != 0) | |
8a3fe4f8 | 737 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 738 | } |
b81654f1 | 739 | |
d2e6263c | 740 | /* First time thru is JUST to get max length and count. */ |
2030c079 | 741 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 742 | { |
7932255d | 743 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
744 | { |
745 | QUIT; | |
c9d95fa3 | 746 | name = msymbol->natural_name (); |
5325b9bf TT |
747 | if (name && |
748 | (name[0] == '-' || name[0] == '+') && | |
749 | name[1] == '[') /* Got a method name. */ | |
750 | if (regexp == NULL || re_exec(name+2) != 0) | |
751 | { | |
752 | /* Compute length of classname part. */ | |
753 | const char *mystart = name + 2; | |
754 | const char *myend = strchr (mystart, ' '); | |
b81654f1 | 755 | |
5325b9bf TT |
756 | if (myend && (myend - mystart > maxlen)) |
757 | maxlen = myend - mystart; | |
758 | matches++; | |
759 | } | |
760 | } | |
b81654f1 MS |
761 | } |
762 | if (matches) | |
763 | { | |
a3f17187 | 764 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 | 765 | regexp ? regexp : "*"); |
8d749320 | 766 | sym_arr = XALLOCAVEC (struct symbol *, matches); |
b81654f1 | 767 | matches = 0; |
2030c079 | 768 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 769 | { |
7932255d | 770 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
771 | { |
772 | QUIT; | |
c9d95fa3 | 773 | name = msymbol->natural_name (); |
5325b9bf TT |
774 | if (name && |
775 | (name[0] == '-' || name[0] == '+') && | |
776 | name[1] == '[') /* Got a method name. */ | |
777 | if (regexp == NULL || re_exec(name+2) != 0) | |
778 | sym_arr[matches++] = (struct symbol *) msymbol; | |
779 | } | |
b81654f1 MS |
780 | } |
781 | ||
782 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
783 | compare_classes); | |
d2e6263c MS |
784 | /* Prevent compare on first iteration. */ |
785 | aclass[0] = 0; | |
786 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
787 | { |
788 | char *p = aclass; | |
789 | ||
790 | QUIT; | |
987012b8 | 791 | name = sym_arr[ix]->natural_name (); |
b81654f1 MS |
792 | name += 2; |
793 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 794 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 795 | |
d2e6263c MS |
796 | /* Copy class part of method name. */ |
797 | while (*name && *name != ' ') | |
b81654f1 MS |
798 | *p++ = *name++; |
799 | *p++ = '\0'; | |
d2e6263c MS |
800 | /* Print in columns. */ |
801 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
802 | } |
803 | begin_line(); | |
804 | } | |
805 | else | |
a3f17187 | 806 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
807 | } |
808 | ||
f8eba3c6 | 809 | static char * |
b81654f1 MS |
810 | parse_selector (char *method, char **selector) |
811 | { | |
812 | char *s1 = NULL; | |
813 | char *s2 = NULL; | |
814 | int found_quote = 0; | |
815 | ||
816 | char *nselector = NULL; | |
817 | ||
e8f3fcdd | 818 | gdb_assert (selector != NULL); |
b81654f1 MS |
819 | |
820 | s1 = method; | |
821 | ||
529480d0 | 822 | s1 = skip_spaces (s1); |
b81654f1 MS |
823 | if (*s1 == '\'') |
824 | { | |
825 | found_quote = 1; | |
826 | s1++; | |
827 | } | |
529480d0 | 828 | s1 = skip_spaces (s1); |
b81654f1 MS |
829 | |
830 | nselector = s1; | |
831 | s2 = s1; | |
832 | ||
5cc80db3 MS |
833 | for (;;) |
834 | { | |
835 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
836 | *s1++ = *s2; | |
837 | else if (isspace (*s2)) | |
838 | ; | |
839 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
840 | break; | |
841 | else | |
842 | return NULL; | |
843 | s2++; | |
844 | } | |
b81654f1 MS |
845 | *s1++ = '\0'; |
846 | ||
529480d0 | 847 | s2 = skip_spaces (s2); |
b81654f1 MS |
848 | if (found_quote) |
849 | { | |
850 | if (*s2 == '\'') | |
851 | s2++; | |
529480d0 | 852 | s2 = skip_spaces (s2); |
b81654f1 MS |
853 | } |
854 | ||
855 | if (selector != NULL) | |
856 | *selector = nselector; | |
857 | ||
858 | return s2; | |
859 | } | |
860 | ||
f8eba3c6 | 861 | static char * |
fe978cb0 | 862 | parse_method (char *method, char *type, char **theclass, |
d2e6263c | 863 | char **category, char **selector) |
b81654f1 MS |
864 | { |
865 | char *s1 = NULL; | |
866 | char *s2 = NULL; | |
867 | int found_quote = 0; | |
868 | ||
869 | char ntype = '\0'; | |
870 | char *nclass = NULL; | |
871 | char *ncategory = NULL; | |
872 | char *nselector = NULL; | |
873 | ||
e8f3fcdd | 874 | gdb_assert (type != NULL); |
fe978cb0 | 875 | gdb_assert (theclass != NULL); |
e8f3fcdd AC |
876 | gdb_assert (category != NULL); |
877 | gdb_assert (selector != NULL); | |
b81654f1 MS |
878 | |
879 | s1 = method; | |
880 | ||
529480d0 | 881 | s1 = skip_spaces (s1); |
b81654f1 MS |
882 | if (*s1 == '\'') |
883 | { | |
884 | found_quote = 1; | |
885 | s1++; | |
886 | } | |
529480d0 | 887 | s1 = skip_spaces (s1); |
b81654f1 MS |
888 | |
889 | if ((s1[0] == '+') || (s1[0] == '-')) | |
890 | ntype = *s1++; | |
891 | ||
529480d0 | 892 | s1 = skip_spaces (s1); |
b81654f1 MS |
893 | |
894 | if (*s1 != '[') | |
895 | return NULL; | |
896 | s1++; | |
897 | ||
898 | nclass = s1; | |
899 | while (isalnum (*s1) || (*s1 == '_')) | |
900 | s1++; | |
901 | ||
902 | s2 = s1; | |
529480d0 | 903 | s2 = skip_spaces (s2); |
b81654f1 MS |
904 | |
905 | if (*s2 == '(') | |
906 | { | |
907 | s2++; | |
529480d0 | 908 | s2 = skip_spaces (s2); |
b81654f1 MS |
909 | ncategory = s2; |
910 | while (isalnum (*s2) || (*s2 == '_')) | |
911 | s2++; | |
912 | *s2++ = '\0'; | |
913 | } | |
914 | ||
d2e6263c | 915 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
916 | *s1++ = '\0'; |
917 | ||
918 | nselector = s2; | |
919 | s1 = s2; | |
920 | ||
5cc80db3 MS |
921 | for (;;) |
922 | { | |
923 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
924 | *s1++ = *s2; | |
925 | else if (isspace (*s2)) | |
926 | ; | |
927 | else if (*s2 == ']') | |
928 | break; | |
929 | else | |
930 | return NULL; | |
931 | s2++; | |
932 | } | |
b81654f1 MS |
933 | *s1++ = '\0'; |
934 | s2++; | |
935 | ||
529480d0 | 936 | s2 = skip_spaces (s2); |
b81654f1 MS |
937 | if (found_quote) |
938 | { | |
939 | if (*s2 != '\'') | |
940 | return NULL; | |
941 | s2++; | |
529480d0 | 942 | s2 = skip_spaces (s2); |
b81654f1 MS |
943 | } |
944 | ||
945 | if (type != NULL) | |
946 | *type = ntype; | |
fe978cb0 PA |
947 | if (theclass != NULL) |
948 | *theclass = nclass; | |
b81654f1 MS |
949 | if (category != NULL) |
950 | *category = ncategory; | |
951 | if (selector != NULL) | |
952 | *selector = nselector; | |
953 | ||
954 | return s2; | |
955 | } | |
956 | ||
2f9a90b4 | 957 | static void |
fe978cb0 | 958 | find_methods (char type, const char *theclass, const char *category, |
f8eba3c6 | 959 | const char *selector, |
9b2f8581 | 960 | std::vector<const char *> *symbol_names) |
b81654f1 | 961 | { |
0d5cff50 | 962 | const char *symname = NULL; |
b81654f1 MS |
963 | |
964 | char ntype = '\0'; | |
965 | char *nclass = NULL; | |
966 | char *ncategory = NULL; | |
967 | char *nselector = NULL; | |
968 | ||
b81654f1 MS |
969 | static char *tmp = NULL; |
970 | static unsigned int tmplen = 0; | |
971 | ||
f8eba3c6 | 972 | gdb_assert (symbol_names != NULL); |
b81654f1 | 973 | |
2030c079 | 974 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 975 | { |
57a9e6af | 976 | unsigned int *objc_csym; |
b81654f1 | 977 | |
57a9e6af PP |
978 | /* The objfile_csym variable counts the number of ObjC methods |
979 | that this objfile defines. We save that count as a private | |
980 | objfile data. If we have already determined that this objfile | |
981 | provides no ObjC methods, we can skip it entirely. */ | |
b81654f1 | 982 | |
57a9e6af | 983 | unsigned int objfile_csym = 0; |
b81654f1 | 984 | |
4c58e337 | 985 | objc_csym = objc_objfile_data.get (objfile); |
57a9e6af PP |
986 | if (objc_csym != NULL && *objc_csym == 0) |
987 | /* There are no ObjC symbols in this objfile. Skip it entirely. */ | |
b81654f1 MS |
988 | continue; |
989 | ||
7932255d | 990 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
b81654f1 | 991 | { |
57a9e6af | 992 | QUIT; |
b81654f1 | 993 | |
0c4b2e63 MF |
994 | /* Check the symbol name first as this can be done entirely without |
995 | sending any query to the target. */ | |
c9d95fa3 | 996 | symname = msymbol->natural_name (); |
0c4b2e63 MF |
997 | if (symname == NULL) |
998 | continue; | |
999 | ||
1000 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1001 | /* Not a method name. */ | |
1002 | continue; | |
1003 | ||
8dfd1e6d KS |
1004 | objfile_csym++; |
1005 | ||
0c4b2e63 | 1006 | /* Now that thinks are a bit sane, clean up the symname. */ |
57a9e6af PP |
1007 | while ((strlen (symname) + 1) >= tmplen) |
1008 | { | |
1009 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
224c3ddb | 1010 | tmp = (char *) xrealloc (tmp, tmplen); |
57a9e6af PP |
1011 | } |
1012 | strcpy (tmp, symname); | |
b81654f1 | 1013 | |
0df8b418 MS |
1014 | if (parse_method (tmp, &ntype, &nclass, |
1015 | &ncategory, &nselector) == NULL) | |
57a9e6af | 1016 | continue; |
b81654f1 | 1017 | |
57a9e6af PP |
1018 | if ((type != '\0') && (ntype != type)) |
1019 | continue; | |
b81654f1 | 1020 | |
fe978cb0 PA |
1021 | if ((theclass != NULL) |
1022 | && ((nclass == NULL) || (strcmp (theclass, nclass) != 0))) | |
57a9e6af PP |
1023 | continue; |
1024 | ||
1025 | if ((category != NULL) && | |
1026 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1027 | continue; | |
b81654f1 | 1028 | |
57a9e6af PP |
1029 | if ((selector != NULL) && |
1030 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1031 | continue; | |
1032 | ||
9b2f8581 | 1033 | symbol_names->push_back (symname); |
57a9e6af | 1034 | } |
f8eba3c6 | 1035 | |
57a9e6af | 1036 | if (objc_csym == NULL) |
4c58e337 | 1037 | objc_csym = objc_objfile_data.emplace (objfile, objfile_csym); |
57a9e6af PP |
1038 | else |
1039 | /* Count of ObjC methods in this objfile should be constant. */ | |
1040 | gdb_assert (*objc_csym == objfile_csym); | |
b81654f1 | 1041 | } |
f8eba3c6 | 1042 | } |
b81654f1 | 1043 | |
791b7405 | 1044 | /* Uniquify a vector of strings. */ |
f8eba3c6 TT |
1045 | |
1046 | static void | |
9b2f8581 | 1047 | uniquify_strings (std::vector<const char *> *strings) |
f8eba3c6 | 1048 | { |
9b2f8581 | 1049 | if (strings->empty ()) |
ee7615e1 AA |
1050 | return; |
1051 | ||
9b2f8581 TT |
1052 | std::sort (strings->begin (), strings->end (), compare_cstrings); |
1053 | strings->erase (std::unique (strings->begin (), strings->end (), streq), | |
1054 | strings->end ()); | |
b81654f1 MS |
1055 | } |
1056 | ||
f8eba3c6 | 1057 | /* |
d7561cbb | 1058 | * Function: find_imps (const char *selector, struct symbol **sym_arr) |
f8eba3c6 TT |
1059 | * |
1060 | * Input: a string representing a selector | |
1061 | * a pointer to an array of symbol pointers | |
1062 | * possibly a pointer to a symbol found by the caller. | |
1063 | * | |
1064 | * Output: number of methods that implement that selector. Side | |
1065 | * effects: The array of symbol pointers is filled with matching syms. | |
1066 | * | |
1067 | * By analogy with function "find_methods" (symtab.c), builds a list | |
1068 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1069 | * (symtab.c) can list them and ask the user to choose one or more. | |
1070 | * In this case the matches are objective c methods | |
1071 | * ("implementations") matching an objective c selector. | |
1072 | * | |
1073 | * Note that it is possible for a normal (c-style) function to have | |
1074 | * the same name as an objective c selector. To prevent the selector | |
1075 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1076 | * search for such a function first, and if it finds one, pass it in | |
1077 | * to us. We will then integrate it into the list. We also search | |
1078 | * for one here, among the minsyms. | |
1079 | * | |
1080 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided | |
1081 | * into two parts: debuggable (struct symbol) syms, and | |
1082 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1083 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1084 | * be the index of the first non-debuggable one). | |
1085 | */ | |
1086 | ||
d7561cbb | 1087 | const char * |
9b2f8581 | 1088 | find_imps (const char *method, std::vector<const char *> *symbol_names) |
b81654f1 MS |
1089 | { |
1090 | char type = '\0'; | |
fe978cb0 | 1091 | char *theclass = NULL; |
b81654f1 MS |
1092 | char *category = NULL; |
1093 | char *selector = NULL; | |
1094 | ||
b81654f1 MS |
1095 | char *buf = NULL; |
1096 | char *tmp = NULL; | |
1097 | ||
f8eba3c6 | 1098 | int selector_case = 0; |
b81654f1 | 1099 | |
f8eba3c6 | 1100 | gdb_assert (symbol_names != NULL); |
b81654f1 MS |
1101 | |
1102 | buf = (char *) alloca (strlen (method) + 1); | |
1103 | strcpy (buf, method); | |
fe978cb0 | 1104 | tmp = parse_method (buf, &type, &theclass, &category, &selector); |
b81654f1 | 1105 | |
5cc80db3 MS |
1106 | if (tmp == NULL) |
1107 | { | |
5cc80db3 MS |
1108 | strcpy (buf, method); |
1109 | tmp = parse_selector (buf, &selector); | |
b81654f1 | 1110 | |
5cc80db3 MS |
1111 | if (tmp == NULL) |
1112 | return NULL; | |
1113 | ||
f8eba3c6 | 1114 | selector_case = 1; |
5cc80db3 | 1115 | } |
b81654f1 | 1116 | |
fe978cb0 | 1117 | find_methods (type, theclass, category, selector, symbol_names); |
b81654f1 | 1118 | |
f8eba3c6 TT |
1119 | /* If we hit the "selector" case, and we found some methods, then |
1120 | add the selector itself as a symbol, if it exists. */ | |
9b2f8581 | 1121 | if (selector_case && !symbol_names->empty ()) |
b81654f1 | 1122 | { |
d12307c1 PMR |
1123 | struct symbol *sym = lookup_symbol (selector, NULL, VAR_DOMAIN, |
1124 | 0).symbol; | |
f8eba3c6 TT |
1125 | |
1126 | if (sym != NULL) | |
987012b8 | 1127 | symbol_names->push_back (sym->natural_name ()); |
f8eba3c6 | 1128 | else |
b81654f1 | 1129 | { |
3b7344d5 TT |
1130 | struct bound_minimal_symbol msym |
1131 | = lookup_minimal_symbol (selector, 0, 0); | |
f8eba3c6 | 1132 | |
3b7344d5 | 1133 | if (msym.minsym != NULL) |
c9d95fa3 | 1134 | symbol_names->push_back (msym.minsym->natural_name ()); |
b81654f1 MS |
1135 | } |
1136 | } | |
1137 | ||
f8eba3c6 | 1138 | uniquify_strings (symbol_names); |
b81654f1 MS |
1139 | |
1140 | return method + (tmp - buf); | |
1141 | } | |
1142 | ||
b9362cc7 | 1143 | static void |
0b39b52e | 1144 | print_object_command (const char *args, int from_tty) |
b81654f1 MS |
1145 | { |
1146 | struct value *object, *function, *description; | |
36e53c63 | 1147 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1148 | int i = 0; |
22a44745 | 1149 | gdb_byte c = 0; |
b81654f1 MS |
1150 | |
1151 | if (!args || !*args) | |
d2e6263c MS |
1152 | error ( |
1153 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1154 | |
1155 | { | |
4d01a485 | 1156 | expression_up expr = parse_expression (args); |
b81654f1 | 1157 | |
efd7ff14 TT |
1158 | object |
1159 | = evaluate_expression (expr.get (), | |
1160 | builtin_type (expr->gdbarch)->builtin_data_ptr); | |
b81654f1 MS |
1161 | } |
1162 | ||
36e53c63 AF |
1163 | /* Validate the address for sanity. */ |
1164 | object_addr = value_as_long (object); | |
1165 | read_memory (object_addr, &c, 1); | |
1166 | ||
3e3b026f | 1167 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); |
36e53c63 | 1168 | if (function == NULL) |
8a3fe4f8 | 1169 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 | 1170 | |
e71585ff | 1171 | description = call_function_by_hand (function, NULL, object); |
b81654f1 | 1172 | |
7248f48e AF |
1173 | string_addr = value_as_long (description); |
1174 | if (string_addr == 0) | |
8a3fe4f8 | 1175 | error (_("object returns null description")); |
b81654f1 MS |
1176 | |
1177 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1178 | if (c != 0) |
b81654f1 | 1179 | do |
d2e6263c | 1180 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1181 | QUIT; |
1182 | printf_filtered ("%c", c); | |
1183 | read_memory (string_addr + i++, &c, 1); | |
1184 | } while (c != 0); | |
1185 | else | |
a3f17187 | 1186 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1187 | printf_filtered ("\n"); |
1188 | } | |
1189 | ||
d2e6263c MS |
1190 | /* The data structure 'methcalls' is used to detect method calls (thru |
1191 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
0df8b418 | 1192 | * and ultimately find the method being called. |
b81654f1 MS |
1193 | */ |
1194 | ||
1195 | struct objc_methcall { | |
a121b7c1 | 1196 | const char *name; |
d2e6263c | 1197 | /* Return instance method to be called. */ |
36e53c63 | 1198 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1199 | /* Start of pc range corresponding to method invocation. */ |
1200 | CORE_ADDR begin; | |
1201 | /* End of pc range corresponding to method invocation. */ | |
1202 | CORE_ADDR end; | |
b81654f1 MS |
1203 | }; |
1204 | ||
d2e6263c MS |
1205 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1206 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1207 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1208 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1209 | |
1210 | static struct objc_methcall methcalls[] = { | |
1211 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1212 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1213 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1214 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1215 | { "_objc_getClass", NULL, 0, 0}, | |
1216 | { "_objc_getMetaClass", NULL, 0, 0} | |
1217 | }; | |
1218 | ||
1219 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1220 | ||
d2e6263c MS |
1221 | /* The following function, "find_objc_msgsend", fills in the data |
1222 | * structure "objc_msgs" by finding the addresses of each of the | |
1223 | * (currently four) functions that it holds (of which objc_msgSend is | |
1224 | * the first). This must be called each time symbols are loaded, in | |
0df8b418 | 1225 | * case the functions have moved for some reason. |
b81654f1 MS |
1226 | */ |
1227 | ||
b9362cc7 | 1228 | static void |
b81654f1 MS |
1229 | find_objc_msgsend (void) |
1230 | { | |
1231 | unsigned int i; | |
b81654f1 | 1232 | |
5cc80db3 MS |
1233 | for (i = 0; i < nmethcalls; i++) |
1234 | { | |
50e65b17 | 1235 | struct bound_minimal_symbol func; |
b81654f1 | 1236 | |
5cc80db3 | 1237 | /* Try both with and without underscore. */ |
50e65b17 TT |
1238 | func = lookup_bound_minimal_symbol (methcalls[i].name); |
1239 | if ((func.minsym == NULL) && (methcalls[i].name[0] == '_')) | |
5cc80db3 | 1240 | { |
50e65b17 | 1241 | func = lookup_bound_minimal_symbol (methcalls[i].name + 1); |
5cc80db3 | 1242 | } |
50e65b17 | 1243 | if (func.minsym == NULL) |
5cc80db3 MS |
1244 | { |
1245 | methcalls[i].begin = 0; | |
1246 | methcalls[i].end = 0; | |
1247 | continue; | |
1248 | } | |
1249 | ||
77e371c0 | 1250 | methcalls[i].begin = BMSYMBOL_VALUE_ADDRESS (func); |
50e65b17 | 1251 | methcalls[i].end = minimal_symbol_upper_bound (func); |
b81654f1 | 1252 | } |
b81654f1 MS |
1253 | } |
1254 | ||
1255 | /* find_objc_msgcall (replaces pc_off_limits) | |
1256 | * | |
d2e6263c MS |
1257 | * ALL that this function now does is to determine whether the input |
1258 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1259 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1260 | * if so, it returns the address of the method that will be called. | |
1261 | * | |
1262 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1263 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1264 | * returning the address of the shlib function that would be called. |
e76f05fa | 1265 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c | 1266 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
0df8b418 | 1267 | * dependent modules. |
b81654f1 MS |
1268 | */ |
1269 | ||
b9362cc7 | 1270 | static int |
36e53c63 | 1271 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1272 | CORE_ADDR pc, |
1273 | CORE_ADDR *new_pc) | |
b81654f1 | 1274 | { |
a70b8144 | 1275 | try |
bf469271 PA |
1276 | { |
1277 | if (f (pc, new_pc) == 0) | |
1278 | return 1; | |
1279 | } | |
230d2906 | 1280 | catch (const gdb_exception &ex) |
bf469271 PA |
1281 | { |
1282 | exception_fprintf (gdb_stderr, ex, | |
1283 | "Unable to determine target of " | |
1284 | "Objective-C method call (ignoring):\n"); | |
1285 | } | |
bf469271 PA |
1286 | |
1287 | return 0; | |
b81654f1 MS |
1288 | } |
1289 | ||
1290 | int | |
1291 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1292 | { | |
1293 | unsigned int i; | |
1294 | ||
1295 | find_objc_msgsend (); | |
5e488a7b AC |
1296 | if (new_pc != NULL) |
1297 | { | |
1298 | *new_pc = 0; | |
1299 | } | |
b81654f1 | 1300 | |
d2e6263c MS |
1301 | for (i = 0; i < nmethcalls; i++) |
1302 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1303 | { | |
1304 | if (methcalls[i].stop_at != NULL) | |
1305 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1306 | pc, new_pc); | |
1307 | else | |
1308 | return 0; | |
b81654f1 | 1309 | } |
d2e6263c | 1310 | |
b81654f1 MS |
1311 | return 0; |
1312 | } | |
1313 | ||
6c265988 | 1314 | void _initialize_objc_language (); |
b81654f1 | 1315 | void |
6c265988 | 1316 | _initialize_objc_language () |
b81654f1 | 1317 | { |
11db9430 | 1318 | add_info ("selectors", info_selectors_command, |
1bedd215 | 1319 | _("All Objective-C selectors, or those matching REGEXP.")); |
11db9430 | 1320 | add_info ("classes", info_classes_command, |
1bedd215 | 1321 | _("All Objective-C classes, or those matching REGEXP.")); |
3947f654 SM |
1322 | cmd_list_element *print_object_cmd |
1323 | = add_com ("print-object", class_vars, print_object_command, | |
1324 | _("Ask an Objective-C object to print itself.")); | |
1325 | add_com_alias ("po", print_object_cmd, class_vars, 1); | |
b81654f1 MS |
1326 | } |
1327 | ||
b81654f1 | 1328 | static void |
e17a4113 UW |
1329 | read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1330 | struct objc_method *method) | |
b81654f1 | 1331 | { |
e17a4113 | 1332 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1333 | |
e17a4113 UW |
1334 | method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order); |
1335 | method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1336 | method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
b81654f1 MS |
1337 | } |
1338 | ||
e17a4113 UW |
1339 | static unsigned long |
1340 | read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr) | |
b81654f1 | 1341 | { |
e17a4113 | 1342 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1343 | |
e17a4113 | 1344 | return read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1345 | } |
1346 | ||
1347 | static void | |
e17a4113 UW |
1348 | read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1349 | unsigned long num, struct objc_method *method) | |
b81654f1 | 1350 | { |
e17a4113 UW |
1351 | gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr)); |
1352 | read_objc_method (gdbarch, addr + 8 + (12 * num), method); | |
b81654f1 MS |
1353 | } |
1354 | ||
1355 | static void | |
e17a4113 UW |
1356 | read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr, |
1357 | struct objc_object *object) | |
b81654f1 | 1358 | { |
e17a4113 | 1359 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1360 | |
e17a4113 | 1361 | object->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
b81654f1 MS |
1362 | } |
1363 | ||
1364 | static void | |
e17a4113 UW |
1365 | read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr, |
1366 | struct objc_super *super) | |
b81654f1 | 1367 | { |
e17a4113 | 1368 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1369 | |
e17a4113 | 1370 | super->receiver = read_memory_unsigned_integer (addr, 4, byte_order); |
fe978cb0 | 1371 | super->theclass = read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1372 | }; |
1373 | ||
1374 | static void | |
e17a4113 | 1375 | read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr, |
fe978cb0 | 1376 | struct objc_class *theclass) |
b81654f1 | 1377 | { |
e17a4113 | 1378 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1379 | |
fe978cb0 PA |
1380 | theclass->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
1381 | theclass->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1382 | theclass->name = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1383 | theclass->version = read_memory_unsigned_integer (addr + 12, 4, byte_order); | |
1384 | theclass->info = read_memory_unsigned_integer (addr + 16, 4, byte_order); | |
1385 | theclass->instance_size = read_memory_unsigned_integer (addr + 18, 4, | |
0df8b418 | 1386 | byte_order); |
fe978cb0 PA |
1387 | theclass->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order); |
1388 | theclass->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order); | |
1389 | theclass->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order); | |
1390 | theclass->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order); | |
b81654f1 MS |
1391 | } |
1392 | ||
b9362cc7 | 1393 | static CORE_ADDR |
e17a4113 | 1394 | find_implementation_from_class (struct gdbarch *gdbarch, |
fe978cb0 | 1395 | CORE_ADDR theclass, CORE_ADDR sel) |
b81654f1 | 1396 | { |
e17a4113 | 1397 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
fe978cb0 | 1398 | CORE_ADDR subclass = theclass; |
b81654f1 | 1399 | |
d2e6263c MS |
1400 | while (subclass != 0) |
1401 | { | |
b81654f1 | 1402 | |
d2e6263c MS |
1403 | struct objc_class class_str; |
1404 | unsigned mlistnum = 0; | |
b81654f1 | 1405 | |
e17a4113 | 1406 | read_objc_class (gdbarch, subclass, &class_str); |
b81654f1 | 1407 | |
d2e6263c MS |
1408 | for (;;) |
1409 | { | |
1410 | CORE_ADDR mlist; | |
1411 | unsigned long nmethods; | |
1412 | unsigned long i; | |
b81654f1 | 1413 | |
d2e6263c | 1414 | mlist = read_memory_unsigned_integer (class_str.methods + |
e17a4113 UW |
1415 | (4 * mlistnum), |
1416 | 4, byte_order); | |
d2e6263c MS |
1417 | if (mlist == 0) |
1418 | break; | |
b81654f1 | 1419 | |
e17a4113 | 1420 | nmethods = read_objc_methlist_nmethods (gdbarch, mlist); |
b81654f1 | 1421 | |
d2e6263c MS |
1422 | for (i = 0; i < nmethods; i++) |
1423 | { | |
1424 | struct objc_method meth_str; | |
b81654f1 | 1425 | |
5cc80db3 | 1426 | read_objc_methlist_method (gdbarch, mlist, i, &meth_str); |
b81654f1 | 1427 | |
d2e6263c | 1428 | if (meth_str.name == sel) |
1abf022c | 1429 | /* FIXME: hppa arch was doing a pointer dereference |
0df8b418 | 1430 | here. There needs to be a better way to do that. */ |
1abf022c | 1431 | return meth_str.imp; |
d2e6263c MS |
1432 | } |
1433 | mlistnum++; | |
b81654f1 | 1434 | } |
d2e6263c | 1435 | subclass = class_str.super_class; |
b81654f1 | 1436 | } |
b81654f1 MS |
1437 | |
1438 | return 0; | |
1439 | } | |
1440 | ||
b9362cc7 | 1441 | static CORE_ADDR |
e17a4113 UW |
1442 | find_implementation (struct gdbarch *gdbarch, |
1443 | CORE_ADDR object, CORE_ADDR sel) | |
b81654f1 MS |
1444 | { |
1445 | struct objc_object ostr; | |
1446 | ||
d2e6263c MS |
1447 | if (object == 0) |
1448 | return 0; | |
e17a4113 | 1449 | read_objc_object (gdbarch, object, &ostr); |
d2e6263c MS |
1450 | if (ostr.isa == 0) |
1451 | return 0; | |
b81654f1 | 1452 | |
e17a4113 | 1453 | return find_implementation_from_class (gdbarch, ostr.isa, sel); |
b81654f1 MS |
1454 | } |
1455 | ||
1456 | static int | |
1457 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1458 | { | |
5ed92fa8 UW |
1459 | struct frame_info *frame = get_current_frame (); |
1460 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1461 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1462 | ||
b81654f1 MS |
1463 | CORE_ADDR object; |
1464 | CORE_ADDR sel; | |
1465 | CORE_ADDR res; | |
1466 | ||
5ed92fa8 UW |
1467 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1468 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1469 | |
e17a4113 | 1470 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1471 | if (new_pc != 0) |
1472 | *new_pc = res; | |
1473 | if (res == 0) | |
1474 | return 1; | |
b81654f1 MS |
1475 | return 0; |
1476 | } | |
1477 | ||
1478 | static int | |
1479 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1480 | { | |
5ed92fa8 UW |
1481 | struct frame_info *frame = get_current_frame (); |
1482 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1483 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1484 | ||
b81654f1 MS |
1485 | CORE_ADDR object; |
1486 | CORE_ADDR sel; | |
1487 | CORE_ADDR res; | |
1488 | ||
5ed92fa8 UW |
1489 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1490 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1491 | |
e17a4113 | 1492 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1493 | if (new_pc != 0) |
1494 | *new_pc = res; | |
1495 | if (res == 0) | |
1496 | return 1; | |
b81654f1 MS |
1497 | return 0; |
1498 | } | |
1499 | ||
1500 | static int | |
1501 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1502 | { | |
5ed92fa8 UW |
1503 | struct frame_info *frame = get_current_frame (); |
1504 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1505 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1506 | ||
b81654f1 MS |
1507 | struct objc_super sstr; |
1508 | ||
1509 | CORE_ADDR super; | |
1510 | CORE_ADDR sel; | |
1511 | CORE_ADDR res; | |
1512 | ||
5ed92fa8 UW |
1513 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1514 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1515 | |
e17a4113 | 1516 | read_objc_super (gdbarch, super, &sstr); |
fe978cb0 | 1517 | if (sstr.theclass == 0) |
d2e6263c | 1518 | return 0; |
b81654f1 | 1519 | |
fe978cb0 | 1520 | res = find_implementation_from_class (gdbarch, sstr.theclass, sel); |
d2e6263c MS |
1521 | if (new_pc != 0) |
1522 | *new_pc = res; | |
1523 | if (res == 0) | |
1524 | return 1; | |
b81654f1 MS |
1525 | return 0; |
1526 | } | |
1527 | ||
1528 | static int | |
1529 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1530 | { | |
5ed92fa8 UW |
1531 | struct frame_info *frame = get_current_frame (); |
1532 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1533 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1534 | ||
b81654f1 MS |
1535 | struct objc_super sstr; |
1536 | ||
1537 | CORE_ADDR super; | |
1538 | CORE_ADDR sel; | |
1539 | CORE_ADDR res; | |
1540 | ||
5ed92fa8 UW |
1541 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1542 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1543 | |
e17a4113 | 1544 | read_objc_super (gdbarch, super, &sstr); |
fe978cb0 | 1545 | if (sstr.theclass == 0) |
d2e6263c | 1546 | return 0; |
b81654f1 | 1547 | |
fe978cb0 | 1548 | res = find_implementation_from_class (gdbarch, sstr.theclass, sel); |
d2e6263c MS |
1549 | if (new_pc != 0) |
1550 | *new_pc = res; | |
1551 | if (res == 0) | |
1552 | return 1; | |
b81654f1 MS |
1553 | return 0; |
1554 | } |