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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 | ||
d2e6263c | 219 | /* Objective-C name demangling. */ |
b81654f1 MS |
220 | |
221 | char * | |
9a3d7dfd | 222 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
223 | { |
224 | char *demangled, *cp; | |
225 | ||
226 | if (mangled[0] == '_' && | |
227 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
228 | mangled[2] == '_') | |
229 | { | |
224c3ddb | 230 | cp = demangled = (char *) xmalloc (strlen (mangled) + 2); |
b81654f1 MS |
231 | |
232 | if (mangled[1] == 'i') | |
233 | *cp++ = '-'; /* for instance method */ | |
234 | else | |
235 | *cp++ = '+'; /* for class method */ | |
236 | ||
237 | *cp++ = '['; /* opening left brace */ | |
0df8b418 | 238 | strcpy(cp, mangled+3); /* Tack on the rest of the mangled name. */ |
b81654f1 MS |
239 | |
240 | while (*cp && *cp == '_') | |
0df8b418 MS |
241 | cp++; /* Skip any initial underbars in class |
242 | name. */ | |
b81654f1 | 243 | |
7248f48e | 244 | cp = strchr(cp, '_'); |
0df8b418 | 245 | if (!cp) /* Find first non-initial underbar. */ |
b81654f1 | 246 | { |
7248f48e | 247 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
248 | return NULL; |
249 | } | |
0df8b418 | 250 | if (cp[1] == '_') /* Easy case: no category name. */ |
5cc80db3 | 251 | { |
0df8b418 | 252 | *cp++ = ' '; /* Replace two '_' with one ' '. */ |
5cc80db3 MS |
253 | strcpy(cp, mangled + (cp - demangled) + 2); |
254 | } | |
255 | else | |
256 | { | |
0df8b418 | 257 | *cp++ = '('; /* Less easy case: category name. */ |
5cc80db3 MS |
258 | cp = strchr(cp, '_'); |
259 | if (!cp) | |
260 | { | |
261 | xfree(demangled); /* not mangled name */ | |
262 | return NULL; | |
263 | } | |
264 | *cp++ = ')'; | |
0df8b418 MS |
265 | *cp++ = ' '; /* Overwriting 1st char of method name... */ |
266 | strcpy(cp, mangled + (cp - demangled)); /* Get it back. */ | |
5cc80db3 | 267 | } |
b81654f1 MS |
268 | |
269 | while (*cp && *cp == '_') | |
0df8b418 MS |
270 | cp++; /* Skip any initial underbars in |
271 | method name. */ | |
b81654f1 MS |
272 | |
273 | for (; *cp; cp++) | |
274 | if (*cp == '_') | |
0df8b418 | 275 | *cp = ':'; /* Replace remaining '_' with ':'. */ |
b81654f1 MS |
276 | |
277 | *cp++ = ']'; /* closing right brace */ | |
278 | *cp++ = 0; /* string terminator */ | |
279 | return demangled; | |
280 | } | |
281 | else | |
d2e6263c | 282 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
283 | } |
284 | ||
0874fd07 AB |
285 | /* Class representing the Objective-C language. */ |
286 | ||
287 | class objc_language : public language_defn | |
288 | { | |
289 | public: | |
290 | objc_language () | |
0e25e767 | 291 | : language_defn (language_objc) |
0874fd07 | 292 | { /* Nothing. */ } |
1fb314aa | 293 | |
6f7664a9 AB |
294 | /* See language.h. */ |
295 | ||
296 | const char *name () const override | |
297 | { return "objective-c"; } | |
298 | ||
299 | /* See language.h. */ | |
300 | ||
301 | const char *natural_name () const override | |
302 | { return "Objective-C"; } | |
303 | ||
e171d6f1 AB |
304 | /* See language.h. */ |
305 | ||
306 | const std::vector<const char *> &filename_extensions () const override | |
307 | { | |
308 | static const std::vector<const char *> extensions = { ".m" }; | |
309 | return extensions; | |
310 | } | |
311 | ||
1fb314aa AB |
312 | /* See language.h. */ |
313 | void language_arch_info (struct gdbarch *gdbarch, | |
314 | struct language_arch_info *lai) const override | |
315 | { | |
316 | c_language_arch_info (gdbarch, lai); | |
317 | } | |
6f827019 AB |
318 | |
319 | /* See language.h. */ | |
320 | bool sniff_from_mangled_name (const char *mangled, | |
321 | char **demangled) const override | |
322 | { | |
323 | *demangled = objc_demangle (mangled, 0); | |
324 | return *demangled != NULL; | |
325 | } | |
fbfb0a46 AB |
326 | |
327 | /* See language.h. */ | |
328 | ||
5399db93 | 329 | char *demangle_symbol (const char *mangled, int options) const override |
0a50df5d AB |
330 | { |
331 | return objc_demangle (mangled, options); | |
332 | } | |
333 | ||
334 | /* See language.h. */ | |
335 | ||
fbfb0a46 AB |
336 | void print_type (struct type *type, const char *varstring, |
337 | struct ui_file *stream, int show, int level, | |
338 | const struct type_print_options *flags) const override | |
339 | { | |
340 | c_print_type (type, varstring, stream, show, level, flags); | |
341 | } | |
f6eee2d0 AB |
342 | |
343 | /* See language.h. */ | |
344 | ||
345 | CORE_ADDR skip_trampoline (struct frame_info *frame, | |
346 | CORE_ADDR stop_pc) const override | |
347 | { | |
348 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
349 | CORE_ADDR real_stop_pc; | |
350 | CORE_ADDR method_stop_pc; | |
351 | ||
352 | /* Determine if we are currently in the Objective-C dispatch function. | |
353 | If so, get the address of the method function that the dispatcher | |
354 | would call and use that as the function to step into instead. Also | |
355 | skip over the trampoline for the function (if any). This is better | |
356 | for the user since they are only interested in stepping into the | |
357 | method function anyway. */ | |
358 | ||
359 | real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc); | |
360 | ||
361 | if (real_stop_pc != 0) | |
362 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
363 | else | |
364 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
365 | ||
366 | if (method_stop_pc) | |
367 | { | |
368 | real_stop_pc = gdbarch_skip_trampoline_code | |
369 | (gdbarch, frame, method_stop_pc); | |
370 | if (real_stop_pc == 0) | |
371 | real_stop_pc = method_stop_pc; | |
372 | } | |
373 | ||
374 | return real_stop_pc; | |
375 | } | |
5bae7c4e AB |
376 | |
377 | /* See language.h. */ | |
378 | ||
379 | const char *name_of_this () const override | |
380 | { return "self"; } | |
1ac14a04 AB |
381 | |
382 | /* See language.h. */ | |
383 | ||
384 | enum macro_expansion macro_expansion () const override | |
385 | { return macro_expansion_c; } | |
0874fd07 AB |
386 | }; |
387 | ||
388 | /* Single instance of the class representing the Objective-C language. */ | |
389 | ||
390 | static objc_language objc_language_defn; | |
391 | ||
b81654f1 MS |
392 | /* |
393 | * ObjC: | |
0df8b418 | 394 | * Following functions help construct Objective-C message calls. |
b81654f1 MS |
395 | */ |
396 | ||
d2e6263c | 397 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
398 | { |
399 | struct selname *next; | |
400 | char *msglist_sel; | |
401 | int msglist_len; | |
402 | }; | |
403 | ||
404 | static int msglist_len; | |
405 | static struct selname *selname_chain; | |
406 | static char *msglist_sel; | |
407 | ||
408 | void | |
409 | start_msglist(void) | |
410 | { | |
8d749320 | 411 | struct selname *newobj = XNEW (struct selname); |
b81654f1 | 412 | |
fe978cb0 PA |
413 | newobj->next = selname_chain; |
414 | newobj->msglist_len = msglist_len; | |
415 | newobj->msglist_sel = msglist_sel; | |
b81654f1 MS |
416 | msglist_len = 0; |
417 | msglist_sel = (char *)xmalloc(1); | |
418 | *msglist_sel = 0; | |
fe978cb0 | 419 | selname_chain = newobj; |
b81654f1 MS |
420 | } |
421 | ||
422 | void | |
423 | add_msglist(struct stoken *str, int addcolon) | |
424 | { | |
d7561cbb KS |
425 | char *s; |
426 | const char *p; | |
b81654f1 MS |
427 | int len, plen; |
428 | ||
5cc80db3 MS |
429 | if (str == 0) /* Unnamed arg, or... */ |
430 | { | |
431 | if (addcolon == 0) /* variable number of args. */ | |
432 | { | |
433 | msglist_len++; | |
434 | return; | |
435 | } | |
436 | p = ""; | |
437 | plen = 0; | |
438 | } | |
439 | else | |
440 | { | |
441 | p = str->ptr; | |
442 | plen = str->length; | |
b81654f1 | 443 | } |
b81654f1 MS |
444 | len = plen + strlen(msglist_sel) + 2; |
445 | s = (char *)xmalloc(len); | |
446 | strcpy(s, msglist_sel); | |
447 | strncat(s, p, plen); | |
7248f48e | 448 | xfree(msglist_sel); |
b81654f1 | 449 | msglist_sel = s; |
5cc80db3 MS |
450 | if (addcolon) |
451 | { | |
452 | s[len-2] = ':'; | |
453 | s[len-1] = 0; | |
454 | msglist_len++; | |
455 | } | |
456 | else | |
b81654f1 MS |
457 | s[len-2] = '\0'; |
458 | } | |
459 | ||
460 | int | |
410a0ff2 | 461 | end_msglist (struct parser_state *ps) |
b81654f1 | 462 | { |
f86f5ca3 PH |
463 | int val = msglist_len; |
464 | struct selname *sel = selname_chain; | |
465 | char *p = msglist_sel; | |
c253954e | 466 | CORE_ADDR selid; |
b81654f1 | 467 | |
d182f279 TT |
468 | std::vector<expr::operation_up> args = ps->pop_vector (val); |
469 | expr::operation_up target = ps->pop (); | |
470 | ||
b81654f1 MS |
471 | selname_chain = sel->next; |
472 | msglist_len = sel->msglist_len; | |
473 | msglist_sel = sel->msglist_sel; | |
fa9f5be6 | 474 | selid = lookup_child_selector (ps->gdbarch (), p); |
b81654f1 | 475 | if (!selid) |
8a3fe4f8 | 476 | error (_("Can't find selector \"%s\""), p); |
d182f279 TT |
477 | |
478 | ps->push_new<expr::objc_msgcall_operation> (selid, std::move (target), | |
479 | std::move (args)); | |
480 | ||
7248f48e | 481 | xfree(p); |
7248f48e | 482 | xfree(sel); |
b81654f1 MS |
483 | |
484 | return val; | |
485 | } | |
486 | ||
487 | /* | |
0d5cff50 | 488 | * Function: specialcmp (const char *a, const char *b) |
b81654f1 MS |
489 | * |
490 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 491 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
492 | */ |
493 | ||
b9362cc7 | 494 | static int |
0d5cff50 | 495 | specialcmp (const char *a, const char *b) |
b81654f1 MS |
496 | { |
497 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
498 | { | |
499 | if (*a != *b) | |
500 | return *a - *b; | |
501 | a++, b++; | |
502 | } | |
503 | if (*a && *a != ' ' && *a != ']') | |
0df8b418 | 504 | return 1; /* a is longer therefore greater. */ |
b81654f1 | 505 | if (*b && *b != ' ' && *b != ']') |
0df8b418 MS |
506 | return -1; /* a is shorter therefore lesser. */ |
507 | return 0; /* a and b are identical. */ | |
b81654f1 MS |
508 | } |
509 | ||
510 | /* | |
36e53c63 | 511 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 512 | * |
d2e6263c MS |
513 | * Comparison function for use with qsort. Arguments are symbols or |
514 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
515 | */ |
516 | ||
517 | static int | |
36e53c63 | 518 | compare_selectors (const void *a, const void *b) |
b81654f1 | 519 | { |
0d5cff50 | 520 | const char *aname, *bname; |
b81654f1 | 521 | |
987012b8 CB |
522 | aname = (*(struct symbol **) a)->print_name (); |
523 | bname = (*(struct symbol **) b)->print_name (); | |
7248f48e | 524 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 525 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 526 | |
7248f48e AF |
527 | aname = strchr(aname, ' '); |
528 | bname = strchr(bname, ' '); | |
529 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 530 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
531 | |
532 | return specialcmp (aname+1, bname+1); | |
533 | } | |
534 | ||
535 | /* | |
536 | * Function: selectors_info (regexp, from_tty) | |
537 | * | |
d2e6263c MS |
538 | * Implements the "Info selectors" command. Takes an optional regexp |
539 | * arg. Lists all objective c selectors that match the regexp. Works | |
540 | * by grepping thru all symbols for objective c methods. Output list | |
541 | * is sorted and uniqued. | |
b81654f1 MS |
542 | */ |
543 | ||
544 | static void | |
1d12d88f | 545 | info_selectors_command (const char *regexp, int from_tty) |
b81654f1 | 546 | { |
0d5cff50 | 547 | const char *name; |
b81654f1 MS |
548 | char *val; |
549 | int matches = 0; | |
550 | int maxlen = 0; | |
551 | int ix; | |
552 | char myregexp[2048]; | |
553 | char asel[256]; | |
554 | struct symbol **sym_arr; | |
555 | int plusminus = 0; | |
556 | ||
557 | if (regexp == NULL) | |
d2e6263c | 558 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
559 | else |
560 | { | |
d2e6263c MS |
561 | if (*regexp == '+' || *regexp == '-') |
562 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
563 | plusminus = *regexp++; |
564 | while (*regexp == ' ' || *regexp == '\t') | |
565 | regexp++; | |
566 | } | |
567 | if (*regexp == '\0') | |
568 | strcpy(myregexp, ".*]"); | |
569 | else | |
570 | { | |
a9dc8dcc | 571 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 | 572 | if (sizeof (myregexp) < strlen (regexp) + 4) |
20937029 JK |
573 | error (_("Regexp is too long: %s"), regexp); |
574 | strcpy(myregexp, regexp); | |
b81654f1 MS |
575 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ |
576 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
577 | else | |
578 | strcat(myregexp, ".*]"); | |
579 | } | |
580 | } | |
581 | ||
582 | if (regexp != NULL) | |
5e488a7b AC |
583 | { |
584 | val = re_comp (myregexp); | |
585 | if (val != 0) | |
8a3fe4f8 | 586 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 587 | } |
b81654f1 | 588 | |
d2e6263c | 589 | /* First time thru is JUST to get max length and count. */ |
2030c079 | 590 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 591 | { |
7932255d | 592 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
b81654f1 | 593 | { |
5325b9bf | 594 | QUIT; |
c9d95fa3 | 595 | name = msymbol->natural_name (); |
5325b9bf TT |
596 | if (name |
597 | && (name[0] == '-' || name[0] == '+') | |
598 | && name[1] == '[') /* Got a method name. */ | |
50412521 | 599 | { |
5325b9bf TT |
600 | /* Filter for class/instance methods. */ |
601 | if (plusminus && name[0] != plusminus) | |
602 | continue; | |
603 | /* Find selector part. */ | |
604 | name = (char *) strchr (name+2, ' '); | |
605 | if (name == NULL) | |
606 | { | |
607 | complaint (_("Bad method name '%s'"), | |
c9d95fa3 | 608 | msymbol->natural_name ()); |
5325b9bf TT |
609 | continue; |
610 | } | |
611 | if (regexp == NULL || re_exec(++name) != 0) | |
612 | { | |
613 | const char *mystart = name; | |
614 | const char *myend = strchr (mystart, ']'); | |
b81654f1 | 615 | |
5325b9bf TT |
616 | if (myend && (myend - mystart > maxlen)) |
617 | maxlen = myend - mystart; /* Get longest selector. */ | |
618 | matches++; | |
619 | } | |
b81654f1 MS |
620 | } |
621 | } | |
622 | } | |
623 | if (matches) | |
624 | { | |
a3f17187 | 625 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
626 | regexp ? regexp : "*"); |
627 | ||
8d749320 | 628 | sym_arr = XALLOCAVEC (struct symbol *, matches); |
b81654f1 | 629 | matches = 0; |
2030c079 | 630 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 631 | { |
7932255d | 632 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
b81654f1 | 633 | { |
5325b9bf | 634 | QUIT; |
c9d95fa3 | 635 | name = msymbol->natural_name (); |
5325b9bf TT |
636 | if (name && |
637 | (name[0] == '-' || name[0] == '+') && | |
638 | name[1] == '[') /* Got a method name. */ | |
639 | { | |
640 | /* Filter for class/instance methods. */ | |
641 | if (plusminus && name[0] != plusminus) | |
642 | continue; | |
643 | /* Find selector part. */ | |
644 | name = (char *) strchr(name+2, ' '); | |
645 | if (regexp == NULL || re_exec(++name) != 0) | |
646 | sym_arr[matches++] = (struct symbol *) msymbol; | |
647 | } | |
b81654f1 MS |
648 | } |
649 | } | |
650 | ||
651 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
652 | compare_selectors); | |
d2e6263c MS |
653 | /* Prevent compare on first iteration. */ |
654 | asel[0] = 0; | |
655 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
656 | { |
657 | char *p = asel; | |
658 | ||
659 | QUIT; | |
987012b8 | 660 | name = sym_arr[ix]->natural_name (); |
b81654f1 MS |
661 | name = strchr (name, ' ') + 1; |
662 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 663 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 664 | |
d2e6263c MS |
665 | /* Copy selector part. */ |
666 | while (*name && *name != ']') | |
b81654f1 MS |
667 | *p++ = *name++; |
668 | *p++ = '\0'; | |
d2e6263c MS |
669 | /* Print in columns. */ |
670 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
671 | } |
672 | begin_line(); | |
673 | } | |
674 | else | |
0df8b418 MS |
675 | printf_filtered (_("No selectors matching \"%s\"\n"), |
676 | regexp ? regexp : "*"); | |
b81654f1 MS |
677 | } |
678 | ||
679 | /* | |
36e53c63 | 680 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 681 | * |
d2e6263c MS |
682 | * Comparison function for use with qsort. Arguments are symbols or |
683 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
684 | */ |
685 | ||
686 | static int | |
36e53c63 | 687 | compare_classes (const void *a, const void *b) |
b81654f1 | 688 | { |
0d5cff50 | 689 | const char *aname, *bname; |
b81654f1 | 690 | |
987012b8 CB |
691 | aname = (*(struct symbol **) a)->print_name (); |
692 | bname = (*(struct symbol **) b)->print_name (); | |
7248f48e | 693 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 694 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
695 | |
696 | return specialcmp (aname+1, bname+1); | |
697 | } | |
698 | ||
699 | /* | |
700 | * Function: classes_info(regexp, from_tty) | |
701 | * | |
702 | * Implements the "info classes" command for objective c classes. | |
703 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
704 | * Works by grepping thru the list of objective c methods. List will |
705 | * be sorted and uniqued (since one class may have many methods). | |
706 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
707 | */ |
708 | ||
709 | static void | |
1d12d88f | 710 | info_classes_command (const char *regexp, int from_tty) |
b81654f1 | 711 | { |
0d5cff50 | 712 | const char *name; |
b81654f1 MS |
713 | char *val; |
714 | int matches = 0; | |
715 | int maxlen = 0; | |
716 | int ix; | |
717 | char myregexp[2048]; | |
718 | char aclass[256]; | |
719 | struct symbol **sym_arr; | |
720 | ||
721 | if (regexp == NULL) | |
d2e6263c | 722 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
723 | else |
724 | { | |
a9dc8dcc | 725 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 MS |
726 | if (sizeof (myregexp) < strlen (regexp) + 4) |
727 | error (_("Regexp is too long: %s"), regexp); | |
b81654f1 MS |
728 | strcpy(myregexp, regexp); |
729 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 730 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
731 | myregexp[strlen(myregexp) - 1] = ' '; |
732 | else | |
733 | strcat(myregexp, ".* "); | |
734 | } | |
735 | ||
736 | if (regexp != NULL) | |
5e488a7b AC |
737 | { |
738 | val = re_comp (myregexp); | |
739 | if (val != 0) | |
8a3fe4f8 | 740 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 741 | } |
b81654f1 | 742 | |
d2e6263c | 743 | /* First time thru is JUST to get max length and count. */ |
2030c079 | 744 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 745 | { |
7932255d | 746 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
747 | { |
748 | QUIT; | |
c9d95fa3 | 749 | name = msymbol->natural_name (); |
5325b9bf TT |
750 | if (name && |
751 | (name[0] == '-' || name[0] == '+') && | |
752 | name[1] == '[') /* Got a method name. */ | |
753 | if (regexp == NULL || re_exec(name+2) != 0) | |
754 | { | |
755 | /* Compute length of classname part. */ | |
756 | const char *mystart = name + 2; | |
757 | const char *myend = strchr (mystart, ' '); | |
b81654f1 | 758 | |
5325b9bf TT |
759 | if (myend && (myend - mystart > maxlen)) |
760 | maxlen = myend - mystart; | |
761 | matches++; | |
762 | } | |
763 | } | |
b81654f1 MS |
764 | } |
765 | if (matches) | |
766 | { | |
a3f17187 | 767 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 | 768 | regexp ? regexp : "*"); |
8d749320 | 769 | sym_arr = XALLOCAVEC (struct symbol *, matches); |
b81654f1 | 770 | matches = 0; |
2030c079 | 771 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 772 | { |
7932255d | 773 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
5325b9bf TT |
774 | { |
775 | QUIT; | |
c9d95fa3 | 776 | name = msymbol->natural_name (); |
5325b9bf TT |
777 | if (name && |
778 | (name[0] == '-' || name[0] == '+') && | |
779 | name[1] == '[') /* Got a method name. */ | |
780 | if (regexp == NULL || re_exec(name+2) != 0) | |
781 | sym_arr[matches++] = (struct symbol *) msymbol; | |
782 | } | |
b81654f1 MS |
783 | } |
784 | ||
785 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
786 | compare_classes); | |
d2e6263c MS |
787 | /* Prevent compare on first iteration. */ |
788 | aclass[0] = 0; | |
789 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
790 | { |
791 | char *p = aclass; | |
792 | ||
793 | QUIT; | |
987012b8 | 794 | name = sym_arr[ix]->natural_name (); |
b81654f1 MS |
795 | name += 2; |
796 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 797 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 798 | |
d2e6263c MS |
799 | /* Copy class part of method name. */ |
800 | while (*name && *name != ' ') | |
b81654f1 MS |
801 | *p++ = *name++; |
802 | *p++ = '\0'; | |
d2e6263c MS |
803 | /* Print in columns. */ |
804 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
805 | } |
806 | begin_line(); | |
807 | } | |
808 | else | |
a3f17187 | 809 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
810 | } |
811 | ||
f8eba3c6 | 812 | static char * |
b81654f1 MS |
813 | parse_selector (char *method, char **selector) |
814 | { | |
815 | char *s1 = NULL; | |
816 | char *s2 = NULL; | |
817 | int found_quote = 0; | |
818 | ||
819 | char *nselector = NULL; | |
820 | ||
e8f3fcdd | 821 | gdb_assert (selector != NULL); |
b81654f1 MS |
822 | |
823 | s1 = method; | |
824 | ||
529480d0 | 825 | s1 = skip_spaces (s1); |
b81654f1 MS |
826 | if (*s1 == '\'') |
827 | { | |
828 | found_quote = 1; | |
829 | s1++; | |
830 | } | |
529480d0 | 831 | s1 = skip_spaces (s1); |
b81654f1 MS |
832 | |
833 | nselector = s1; | |
834 | s2 = s1; | |
835 | ||
5cc80db3 MS |
836 | for (;;) |
837 | { | |
838 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
839 | *s1++ = *s2; | |
840 | else if (isspace (*s2)) | |
841 | ; | |
842 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
843 | break; | |
844 | else | |
845 | return NULL; | |
846 | s2++; | |
847 | } | |
b81654f1 MS |
848 | *s1++ = '\0'; |
849 | ||
529480d0 | 850 | s2 = skip_spaces (s2); |
b81654f1 MS |
851 | if (found_quote) |
852 | { | |
853 | if (*s2 == '\'') | |
854 | s2++; | |
529480d0 | 855 | s2 = skip_spaces (s2); |
b81654f1 MS |
856 | } |
857 | ||
858 | if (selector != NULL) | |
859 | *selector = nselector; | |
860 | ||
861 | return s2; | |
862 | } | |
863 | ||
f8eba3c6 | 864 | static char * |
fe978cb0 | 865 | parse_method (char *method, char *type, char **theclass, |
d2e6263c | 866 | char **category, char **selector) |
b81654f1 MS |
867 | { |
868 | char *s1 = NULL; | |
869 | char *s2 = NULL; | |
870 | int found_quote = 0; | |
871 | ||
872 | char ntype = '\0'; | |
873 | char *nclass = NULL; | |
874 | char *ncategory = NULL; | |
875 | char *nselector = NULL; | |
876 | ||
e8f3fcdd | 877 | gdb_assert (type != NULL); |
fe978cb0 | 878 | gdb_assert (theclass != NULL); |
e8f3fcdd AC |
879 | gdb_assert (category != NULL); |
880 | gdb_assert (selector != NULL); | |
b81654f1 MS |
881 | |
882 | s1 = method; | |
883 | ||
529480d0 | 884 | s1 = skip_spaces (s1); |
b81654f1 MS |
885 | if (*s1 == '\'') |
886 | { | |
887 | found_quote = 1; | |
888 | s1++; | |
889 | } | |
529480d0 | 890 | s1 = skip_spaces (s1); |
b81654f1 MS |
891 | |
892 | if ((s1[0] == '+') || (s1[0] == '-')) | |
893 | ntype = *s1++; | |
894 | ||
529480d0 | 895 | s1 = skip_spaces (s1); |
b81654f1 MS |
896 | |
897 | if (*s1 != '[') | |
898 | return NULL; | |
899 | s1++; | |
900 | ||
901 | nclass = s1; | |
902 | while (isalnum (*s1) || (*s1 == '_')) | |
903 | s1++; | |
904 | ||
905 | s2 = s1; | |
529480d0 | 906 | s2 = skip_spaces (s2); |
b81654f1 MS |
907 | |
908 | if (*s2 == '(') | |
909 | { | |
910 | s2++; | |
529480d0 | 911 | s2 = skip_spaces (s2); |
b81654f1 MS |
912 | ncategory = s2; |
913 | while (isalnum (*s2) || (*s2 == '_')) | |
914 | s2++; | |
915 | *s2++ = '\0'; | |
916 | } | |
917 | ||
d2e6263c | 918 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
919 | *s1++ = '\0'; |
920 | ||
921 | nselector = s2; | |
922 | s1 = s2; | |
923 | ||
5cc80db3 MS |
924 | for (;;) |
925 | { | |
926 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
927 | *s1++ = *s2; | |
928 | else if (isspace (*s2)) | |
929 | ; | |
930 | else if (*s2 == ']') | |
931 | break; | |
932 | else | |
933 | return NULL; | |
934 | s2++; | |
935 | } | |
b81654f1 MS |
936 | *s1++ = '\0'; |
937 | s2++; | |
938 | ||
529480d0 | 939 | s2 = skip_spaces (s2); |
b81654f1 MS |
940 | if (found_quote) |
941 | { | |
942 | if (*s2 != '\'') | |
943 | return NULL; | |
944 | s2++; | |
529480d0 | 945 | s2 = skip_spaces (s2); |
b81654f1 MS |
946 | } |
947 | ||
948 | if (type != NULL) | |
949 | *type = ntype; | |
fe978cb0 PA |
950 | if (theclass != NULL) |
951 | *theclass = nclass; | |
b81654f1 MS |
952 | if (category != NULL) |
953 | *category = ncategory; | |
954 | if (selector != NULL) | |
955 | *selector = nselector; | |
956 | ||
957 | return s2; | |
958 | } | |
959 | ||
2f9a90b4 | 960 | static void |
fe978cb0 | 961 | find_methods (char type, const char *theclass, const char *category, |
f8eba3c6 | 962 | const char *selector, |
9b2f8581 | 963 | std::vector<const char *> *symbol_names) |
b81654f1 | 964 | { |
0d5cff50 | 965 | const char *symname = NULL; |
b81654f1 MS |
966 | |
967 | char ntype = '\0'; | |
968 | char *nclass = NULL; | |
969 | char *ncategory = NULL; | |
970 | char *nselector = NULL; | |
971 | ||
b81654f1 MS |
972 | static char *tmp = NULL; |
973 | static unsigned int tmplen = 0; | |
974 | ||
f8eba3c6 | 975 | gdb_assert (symbol_names != NULL); |
b81654f1 | 976 | |
2030c079 | 977 | for (objfile *objfile : current_program_space->objfiles ()) |
b81654f1 | 978 | { |
57a9e6af | 979 | unsigned int *objc_csym; |
b81654f1 | 980 | |
57a9e6af PP |
981 | /* The objfile_csym variable counts the number of ObjC methods |
982 | that this objfile defines. We save that count as a private | |
983 | objfile data. If we have already determined that this objfile | |
984 | provides no ObjC methods, we can skip it entirely. */ | |
b81654f1 | 985 | |
57a9e6af | 986 | unsigned int objfile_csym = 0; |
b81654f1 | 987 | |
4c58e337 | 988 | objc_csym = objc_objfile_data.get (objfile); |
57a9e6af PP |
989 | if (objc_csym != NULL && *objc_csym == 0) |
990 | /* There are no ObjC symbols in this objfile. Skip it entirely. */ | |
b81654f1 MS |
991 | continue; |
992 | ||
7932255d | 993 | for (minimal_symbol *msymbol : objfile->msymbols ()) |
b81654f1 | 994 | { |
57a9e6af | 995 | QUIT; |
b81654f1 | 996 | |
0c4b2e63 MF |
997 | /* Check the symbol name first as this can be done entirely without |
998 | sending any query to the target. */ | |
c9d95fa3 | 999 | symname = msymbol->natural_name (); |
0c4b2e63 MF |
1000 | if (symname == NULL) |
1001 | continue; | |
1002 | ||
1003 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1004 | /* Not a method name. */ | |
1005 | continue; | |
1006 | ||
8dfd1e6d KS |
1007 | objfile_csym++; |
1008 | ||
0c4b2e63 | 1009 | /* Now that thinks are a bit sane, clean up the symname. */ |
57a9e6af PP |
1010 | while ((strlen (symname) + 1) >= tmplen) |
1011 | { | |
1012 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
224c3ddb | 1013 | tmp = (char *) xrealloc (tmp, tmplen); |
57a9e6af PP |
1014 | } |
1015 | strcpy (tmp, symname); | |
b81654f1 | 1016 | |
0df8b418 MS |
1017 | if (parse_method (tmp, &ntype, &nclass, |
1018 | &ncategory, &nselector) == NULL) | |
57a9e6af | 1019 | continue; |
b81654f1 | 1020 | |
57a9e6af PP |
1021 | if ((type != '\0') && (ntype != type)) |
1022 | continue; | |
b81654f1 | 1023 | |
fe978cb0 PA |
1024 | if ((theclass != NULL) |
1025 | && ((nclass == NULL) || (strcmp (theclass, nclass) != 0))) | |
57a9e6af PP |
1026 | continue; |
1027 | ||
1028 | if ((category != NULL) && | |
1029 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1030 | continue; | |
b81654f1 | 1031 | |
57a9e6af PP |
1032 | if ((selector != NULL) && |
1033 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1034 | continue; | |
1035 | ||
9b2f8581 | 1036 | symbol_names->push_back (symname); |
57a9e6af | 1037 | } |
f8eba3c6 | 1038 | |
57a9e6af | 1039 | if (objc_csym == NULL) |
4c58e337 | 1040 | objc_csym = objc_objfile_data.emplace (objfile, objfile_csym); |
57a9e6af PP |
1041 | else |
1042 | /* Count of ObjC methods in this objfile should be constant. */ | |
1043 | gdb_assert (*objc_csym == objfile_csym); | |
b81654f1 | 1044 | } |
f8eba3c6 | 1045 | } |
b81654f1 | 1046 | |
791b7405 | 1047 | /* Uniquify a vector of strings. */ |
f8eba3c6 TT |
1048 | |
1049 | static void | |
9b2f8581 | 1050 | uniquify_strings (std::vector<const char *> *strings) |
f8eba3c6 | 1051 | { |
9b2f8581 | 1052 | if (strings->empty ()) |
ee7615e1 AA |
1053 | return; |
1054 | ||
9b2f8581 TT |
1055 | std::sort (strings->begin (), strings->end (), compare_cstrings); |
1056 | strings->erase (std::unique (strings->begin (), strings->end (), streq), | |
1057 | strings->end ()); | |
b81654f1 MS |
1058 | } |
1059 | ||
f8eba3c6 | 1060 | /* |
d7561cbb | 1061 | * Function: find_imps (const char *selector, struct symbol **sym_arr) |
f8eba3c6 TT |
1062 | * |
1063 | * Input: a string representing a selector | |
1064 | * a pointer to an array of symbol pointers | |
1065 | * possibly a pointer to a symbol found by the caller. | |
1066 | * | |
1067 | * Output: number of methods that implement that selector. Side | |
1068 | * effects: The array of symbol pointers is filled with matching syms. | |
1069 | * | |
1070 | * By analogy with function "find_methods" (symtab.c), builds a list | |
1071 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1072 | * (symtab.c) can list them and ask the user to choose one or more. | |
1073 | * In this case the matches are objective c methods | |
1074 | * ("implementations") matching an objective c selector. | |
1075 | * | |
1076 | * Note that it is possible for a normal (c-style) function to have | |
1077 | * the same name as an objective c selector. To prevent the selector | |
1078 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1079 | * search for such a function first, and if it finds one, pass it in | |
1080 | * to us. We will then integrate it into the list. We also search | |
1081 | * for one here, among the minsyms. | |
1082 | * | |
1083 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided | |
1084 | * into two parts: debuggable (struct symbol) syms, and | |
1085 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1086 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1087 | * be the index of the first non-debuggable one). | |
1088 | */ | |
1089 | ||
d7561cbb | 1090 | const char * |
9b2f8581 | 1091 | find_imps (const char *method, std::vector<const char *> *symbol_names) |
b81654f1 MS |
1092 | { |
1093 | char type = '\0'; | |
fe978cb0 | 1094 | char *theclass = NULL; |
b81654f1 MS |
1095 | char *category = NULL; |
1096 | char *selector = NULL; | |
1097 | ||
b81654f1 MS |
1098 | char *buf = NULL; |
1099 | char *tmp = NULL; | |
1100 | ||
f8eba3c6 | 1101 | int selector_case = 0; |
b81654f1 | 1102 | |
f8eba3c6 | 1103 | gdb_assert (symbol_names != NULL); |
b81654f1 MS |
1104 | |
1105 | buf = (char *) alloca (strlen (method) + 1); | |
1106 | strcpy (buf, method); | |
fe978cb0 | 1107 | tmp = parse_method (buf, &type, &theclass, &category, &selector); |
b81654f1 | 1108 | |
5cc80db3 MS |
1109 | if (tmp == NULL) |
1110 | { | |
5cc80db3 MS |
1111 | strcpy (buf, method); |
1112 | tmp = parse_selector (buf, &selector); | |
b81654f1 | 1113 | |
5cc80db3 MS |
1114 | if (tmp == NULL) |
1115 | return NULL; | |
1116 | ||
f8eba3c6 | 1117 | selector_case = 1; |
5cc80db3 | 1118 | } |
b81654f1 | 1119 | |
fe978cb0 | 1120 | find_methods (type, theclass, category, selector, symbol_names); |
b81654f1 | 1121 | |
f8eba3c6 TT |
1122 | /* If we hit the "selector" case, and we found some methods, then |
1123 | add the selector itself as a symbol, if it exists. */ | |
9b2f8581 | 1124 | if (selector_case && !symbol_names->empty ()) |
b81654f1 | 1125 | { |
d12307c1 PMR |
1126 | struct symbol *sym = lookup_symbol (selector, NULL, VAR_DOMAIN, |
1127 | 0).symbol; | |
f8eba3c6 TT |
1128 | |
1129 | if (sym != NULL) | |
987012b8 | 1130 | symbol_names->push_back (sym->natural_name ()); |
f8eba3c6 | 1131 | else |
b81654f1 | 1132 | { |
3b7344d5 TT |
1133 | struct bound_minimal_symbol msym |
1134 | = lookup_minimal_symbol (selector, 0, 0); | |
f8eba3c6 | 1135 | |
3b7344d5 | 1136 | if (msym.minsym != NULL) |
c9d95fa3 | 1137 | symbol_names->push_back (msym.minsym->natural_name ()); |
b81654f1 MS |
1138 | } |
1139 | } | |
1140 | ||
f8eba3c6 | 1141 | uniquify_strings (symbol_names); |
b81654f1 MS |
1142 | |
1143 | return method + (tmp - buf); | |
1144 | } | |
1145 | ||
b9362cc7 | 1146 | static void |
0b39b52e | 1147 | print_object_command (const char *args, int from_tty) |
b81654f1 MS |
1148 | { |
1149 | struct value *object, *function, *description; | |
36e53c63 | 1150 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1151 | int i = 0; |
22a44745 | 1152 | gdb_byte c = 0; |
b81654f1 MS |
1153 | |
1154 | if (!args || !*args) | |
d2e6263c MS |
1155 | error ( |
1156 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1157 | |
1158 | { | |
4d01a485 | 1159 | expression_up expr = parse_expression (args); |
b81654f1 | 1160 | |
efd7ff14 TT |
1161 | object |
1162 | = evaluate_expression (expr.get (), | |
1163 | builtin_type (expr->gdbarch)->builtin_data_ptr); | |
b81654f1 MS |
1164 | } |
1165 | ||
36e53c63 AF |
1166 | /* Validate the address for sanity. */ |
1167 | object_addr = value_as_long (object); | |
1168 | read_memory (object_addr, &c, 1); | |
1169 | ||
3e3b026f | 1170 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); |
36e53c63 | 1171 | if (function == NULL) |
8a3fe4f8 | 1172 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 | 1173 | |
e71585ff | 1174 | description = call_function_by_hand (function, NULL, object); |
b81654f1 | 1175 | |
7248f48e AF |
1176 | string_addr = value_as_long (description); |
1177 | if (string_addr == 0) | |
8a3fe4f8 | 1178 | error (_("object returns null description")); |
b81654f1 MS |
1179 | |
1180 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1181 | if (c != 0) |
b81654f1 | 1182 | do |
d2e6263c | 1183 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1184 | QUIT; |
1185 | printf_filtered ("%c", c); | |
1186 | read_memory (string_addr + i++, &c, 1); | |
1187 | } while (c != 0); | |
1188 | else | |
a3f17187 | 1189 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1190 | printf_filtered ("\n"); |
1191 | } | |
1192 | ||
d2e6263c MS |
1193 | /* The data structure 'methcalls' is used to detect method calls (thru |
1194 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
0df8b418 | 1195 | * and ultimately find the method being called. |
b81654f1 MS |
1196 | */ |
1197 | ||
1198 | struct objc_methcall { | |
a121b7c1 | 1199 | const char *name; |
d2e6263c | 1200 | /* Return instance method to be called. */ |
36e53c63 | 1201 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1202 | /* Start of pc range corresponding to method invocation. */ |
1203 | CORE_ADDR begin; | |
1204 | /* End of pc range corresponding to method invocation. */ | |
1205 | CORE_ADDR end; | |
b81654f1 MS |
1206 | }; |
1207 | ||
d2e6263c MS |
1208 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1209 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1210 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1211 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1212 | |
1213 | static struct objc_methcall methcalls[] = { | |
1214 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1215 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1216 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1217 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1218 | { "_objc_getClass", NULL, 0, 0}, | |
1219 | { "_objc_getMetaClass", NULL, 0, 0} | |
1220 | }; | |
1221 | ||
1222 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1223 | ||
d2e6263c MS |
1224 | /* The following function, "find_objc_msgsend", fills in the data |
1225 | * structure "objc_msgs" by finding the addresses of each of the | |
1226 | * (currently four) functions that it holds (of which objc_msgSend is | |
1227 | * the first). This must be called each time symbols are loaded, in | |
0df8b418 | 1228 | * case the functions have moved for some reason. |
b81654f1 MS |
1229 | */ |
1230 | ||
b9362cc7 | 1231 | static void |
b81654f1 MS |
1232 | find_objc_msgsend (void) |
1233 | { | |
1234 | unsigned int i; | |
b81654f1 | 1235 | |
5cc80db3 MS |
1236 | for (i = 0; i < nmethcalls; i++) |
1237 | { | |
50e65b17 | 1238 | struct bound_minimal_symbol func; |
b81654f1 | 1239 | |
5cc80db3 | 1240 | /* Try both with and without underscore. */ |
50e65b17 TT |
1241 | func = lookup_bound_minimal_symbol (methcalls[i].name); |
1242 | if ((func.minsym == NULL) && (methcalls[i].name[0] == '_')) | |
5cc80db3 | 1243 | { |
50e65b17 | 1244 | func = lookup_bound_minimal_symbol (methcalls[i].name + 1); |
5cc80db3 | 1245 | } |
50e65b17 | 1246 | if (func.minsym == NULL) |
5cc80db3 MS |
1247 | { |
1248 | methcalls[i].begin = 0; | |
1249 | methcalls[i].end = 0; | |
1250 | continue; | |
1251 | } | |
1252 | ||
77e371c0 | 1253 | methcalls[i].begin = BMSYMBOL_VALUE_ADDRESS (func); |
50e65b17 | 1254 | methcalls[i].end = minimal_symbol_upper_bound (func); |
b81654f1 | 1255 | } |
b81654f1 MS |
1256 | } |
1257 | ||
1258 | /* find_objc_msgcall (replaces pc_off_limits) | |
1259 | * | |
d2e6263c MS |
1260 | * ALL that this function now does is to determine whether the input |
1261 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1262 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1263 | * if so, it returns the address of the method that will be called. | |
1264 | * | |
1265 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1266 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1267 | * returning the address of the shlib function that would be called. |
e76f05fa | 1268 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c | 1269 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
0df8b418 | 1270 | * dependent modules. |
b81654f1 MS |
1271 | */ |
1272 | ||
b9362cc7 | 1273 | static int |
36e53c63 | 1274 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1275 | CORE_ADDR pc, |
1276 | CORE_ADDR *new_pc) | |
b81654f1 | 1277 | { |
a70b8144 | 1278 | try |
bf469271 PA |
1279 | { |
1280 | if (f (pc, new_pc) == 0) | |
1281 | return 1; | |
1282 | } | |
230d2906 | 1283 | catch (const gdb_exception &ex) |
bf469271 PA |
1284 | { |
1285 | exception_fprintf (gdb_stderr, ex, | |
1286 | "Unable to determine target of " | |
1287 | "Objective-C method call (ignoring):\n"); | |
1288 | } | |
bf469271 PA |
1289 | |
1290 | return 0; | |
b81654f1 MS |
1291 | } |
1292 | ||
1293 | int | |
1294 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1295 | { | |
1296 | unsigned int i; | |
1297 | ||
1298 | find_objc_msgsend (); | |
5e488a7b AC |
1299 | if (new_pc != NULL) |
1300 | { | |
1301 | *new_pc = 0; | |
1302 | } | |
b81654f1 | 1303 | |
d2e6263c MS |
1304 | for (i = 0; i < nmethcalls; i++) |
1305 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1306 | { | |
1307 | if (methcalls[i].stop_at != NULL) | |
1308 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1309 | pc, new_pc); | |
1310 | else | |
1311 | return 0; | |
b81654f1 | 1312 | } |
d2e6263c | 1313 | |
b81654f1 MS |
1314 | return 0; |
1315 | } | |
1316 | ||
6c265988 | 1317 | void _initialize_objc_language (); |
b81654f1 | 1318 | void |
6c265988 | 1319 | _initialize_objc_language () |
b81654f1 | 1320 | { |
11db9430 | 1321 | add_info ("selectors", info_selectors_command, |
1bedd215 | 1322 | _("All Objective-C selectors, or those matching REGEXP.")); |
11db9430 | 1323 | add_info ("classes", info_classes_command, |
1bedd215 | 1324 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1325 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1326 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1327 | add_com_alias ("po", "print-object", class_vars, 1); |
1328 | } | |
1329 | ||
b81654f1 | 1330 | static void |
e17a4113 UW |
1331 | read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1332 | struct objc_method *method) | |
b81654f1 | 1333 | { |
e17a4113 | 1334 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1335 | |
e17a4113 UW |
1336 | method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order); |
1337 | method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1338 | method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
b81654f1 MS |
1339 | } |
1340 | ||
e17a4113 UW |
1341 | static unsigned long |
1342 | read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr) | |
b81654f1 | 1343 | { |
e17a4113 | 1344 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1345 | |
e17a4113 | 1346 | return read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1347 | } |
1348 | ||
1349 | static void | |
e17a4113 UW |
1350 | read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1351 | unsigned long num, struct objc_method *method) | |
b81654f1 | 1352 | { |
e17a4113 UW |
1353 | gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr)); |
1354 | read_objc_method (gdbarch, addr + 8 + (12 * num), method); | |
b81654f1 MS |
1355 | } |
1356 | ||
1357 | static void | |
e17a4113 UW |
1358 | read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr, |
1359 | struct objc_object *object) | |
b81654f1 | 1360 | { |
e17a4113 | 1361 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1362 | |
e17a4113 | 1363 | object->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
b81654f1 MS |
1364 | } |
1365 | ||
1366 | static void | |
e17a4113 UW |
1367 | read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr, |
1368 | struct objc_super *super) | |
b81654f1 | 1369 | { |
e17a4113 | 1370 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1371 | |
e17a4113 | 1372 | super->receiver = read_memory_unsigned_integer (addr, 4, byte_order); |
fe978cb0 | 1373 | super->theclass = read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1374 | }; |
1375 | ||
1376 | static void | |
e17a4113 | 1377 | read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr, |
fe978cb0 | 1378 | struct objc_class *theclass) |
b81654f1 | 1379 | { |
e17a4113 | 1380 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1381 | |
fe978cb0 PA |
1382 | theclass->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
1383 | theclass->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1384 | theclass->name = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1385 | theclass->version = read_memory_unsigned_integer (addr + 12, 4, byte_order); | |
1386 | theclass->info = read_memory_unsigned_integer (addr + 16, 4, byte_order); | |
1387 | theclass->instance_size = read_memory_unsigned_integer (addr + 18, 4, | |
0df8b418 | 1388 | byte_order); |
fe978cb0 PA |
1389 | theclass->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order); |
1390 | theclass->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order); | |
1391 | theclass->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order); | |
1392 | theclass->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order); | |
b81654f1 MS |
1393 | } |
1394 | ||
b9362cc7 | 1395 | static CORE_ADDR |
e17a4113 | 1396 | find_implementation_from_class (struct gdbarch *gdbarch, |
fe978cb0 | 1397 | CORE_ADDR theclass, CORE_ADDR sel) |
b81654f1 | 1398 | { |
e17a4113 | 1399 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
fe978cb0 | 1400 | CORE_ADDR subclass = theclass; |
b81654f1 | 1401 | |
d2e6263c MS |
1402 | while (subclass != 0) |
1403 | { | |
b81654f1 | 1404 | |
d2e6263c MS |
1405 | struct objc_class class_str; |
1406 | unsigned mlistnum = 0; | |
b81654f1 | 1407 | |
e17a4113 | 1408 | read_objc_class (gdbarch, subclass, &class_str); |
b81654f1 | 1409 | |
d2e6263c MS |
1410 | for (;;) |
1411 | { | |
1412 | CORE_ADDR mlist; | |
1413 | unsigned long nmethods; | |
1414 | unsigned long i; | |
b81654f1 | 1415 | |
d2e6263c | 1416 | mlist = read_memory_unsigned_integer (class_str.methods + |
e17a4113 UW |
1417 | (4 * mlistnum), |
1418 | 4, byte_order); | |
d2e6263c MS |
1419 | if (mlist == 0) |
1420 | break; | |
b81654f1 | 1421 | |
e17a4113 | 1422 | nmethods = read_objc_methlist_nmethods (gdbarch, mlist); |
b81654f1 | 1423 | |
d2e6263c MS |
1424 | for (i = 0; i < nmethods; i++) |
1425 | { | |
1426 | struct objc_method meth_str; | |
b81654f1 | 1427 | |
5cc80db3 | 1428 | read_objc_methlist_method (gdbarch, mlist, i, &meth_str); |
b81654f1 | 1429 | |
d2e6263c | 1430 | if (meth_str.name == sel) |
1abf022c | 1431 | /* FIXME: hppa arch was doing a pointer dereference |
0df8b418 | 1432 | here. There needs to be a better way to do that. */ |
1abf022c | 1433 | return meth_str.imp; |
d2e6263c MS |
1434 | } |
1435 | mlistnum++; | |
b81654f1 | 1436 | } |
d2e6263c | 1437 | subclass = class_str.super_class; |
b81654f1 | 1438 | } |
b81654f1 MS |
1439 | |
1440 | return 0; | |
1441 | } | |
1442 | ||
b9362cc7 | 1443 | static CORE_ADDR |
e17a4113 UW |
1444 | find_implementation (struct gdbarch *gdbarch, |
1445 | CORE_ADDR object, CORE_ADDR sel) | |
b81654f1 MS |
1446 | { |
1447 | struct objc_object ostr; | |
1448 | ||
d2e6263c MS |
1449 | if (object == 0) |
1450 | return 0; | |
e17a4113 | 1451 | read_objc_object (gdbarch, object, &ostr); |
d2e6263c MS |
1452 | if (ostr.isa == 0) |
1453 | return 0; | |
b81654f1 | 1454 | |
e17a4113 | 1455 | return find_implementation_from_class (gdbarch, ostr.isa, sel); |
b81654f1 MS |
1456 | } |
1457 | ||
1458 | static int | |
1459 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1460 | { | |
5ed92fa8 UW |
1461 | struct frame_info *frame = get_current_frame (); |
1462 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1463 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1464 | ||
b81654f1 MS |
1465 | CORE_ADDR object; |
1466 | CORE_ADDR sel; | |
1467 | CORE_ADDR res; | |
1468 | ||
5ed92fa8 UW |
1469 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1470 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1471 | |
e17a4113 | 1472 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1473 | if (new_pc != 0) |
1474 | *new_pc = res; | |
1475 | if (res == 0) | |
1476 | return 1; | |
b81654f1 MS |
1477 | return 0; |
1478 | } | |
1479 | ||
1480 | static int | |
1481 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1482 | { | |
5ed92fa8 UW |
1483 | struct frame_info *frame = get_current_frame (); |
1484 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1485 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1486 | ||
b81654f1 MS |
1487 | CORE_ADDR object; |
1488 | CORE_ADDR sel; | |
1489 | CORE_ADDR res; | |
1490 | ||
5ed92fa8 UW |
1491 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1492 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1493 | |
e17a4113 | 1494 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1495 | if (new_pc != 0) |
1496 | *new_pc = res; | |
1497 | if (res == 0) | |
1498 | return 1; | |
b81654f1 MS |
1499 | return 0; |
1500 | } | |
1501 | ||
1502 | static int | |
1503 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1504 | { | |
5ed92fa8 UW |
1505 | struct frame_info *frame = get_current_frame (); |
1506 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1507 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1508 | ||
b81654f1 MS |
1509 | struct objc_super sstr; |
1510 | ||
1511 | CORE_ADDR super; | |
1512 | CORE_ADDR sel; | |
1513 | CORE_ADDR res; | |
1514 | ||
5ed92fa8 UW |
1515 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1516 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1517 | |
e17a4113 | 1518 | read_objc_super (gdbarch, super, &sstr); |
fe978cb0 | 1519 | if (sstr.theclass == 0) |
d2e6263c | 1520 | return 0; |
b81654f1 | 1521 | |
fe978cb0 | 1522 | res = find_implementation_from_class (gdbarch, sstr.theclass, sel); |
d2e6263c MS |
1523 | if (new_pc != 0) |
1524 | *new_pc = res; | |
1525 | if (res == 0) | |
1526 | return 1; | |
b81654f1 MS |
1527 | return 0; |
1528 | } | |
1529 | ||
1530 | static int | |
1531 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1532 | { | |
5ed92fa8 UW |
1533 | struct frame_info *frame = get_current_frame (); |
1534 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1535 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1536 | ||
b81654f1 MS |
1537 | struct objc_super sstr; |
1538 | ||
1539 | CORE_ADDR super; | |
1540 | CORE_ADDR sel; | |
1541 | CORE_ADDR res; | |
1542 | ||
5ed92fa8 UW |
1543 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1544 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1545 | |
e17a4113 | 1546 | read_objc_super (gdbarch, super, &sstr); |
fe978cb0 | 1547 | if (sstr.theclass == 0) |
d2e6263c | 1548 | return 0; |
b81654f1 | 1549 | |
fe978cb0 | 1550 | res = find_implementation_from_class (gdbarch, sstr.theclass, sel); |
d2e6263c MS |
1551 | if (new_pc != 0) |
1552 | *new_pc = res; | |
1553 | if (res == 0) | |
1554 | return 1; | |
b81654f1 MS |
1555 | return 0; |
1556 | } |