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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
618f726f | 3 | Copyright (C) 2002-2016 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" | |
b81654f1 MS |
36 | #include "target.h" /* for target_has_execution */ |
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" |
b81654f1 MS |
46 | |
47 | #include <ctype.h> | |
48 | ||
49 | struct objc_object { | |
50 | CORE_ADDR isa; | |
51 | }; | |
52 | ||
53 | struct objc_class { | |
54 | CORE_ADDR isa; | |
55 | CORE_ADDR super_class; | |
56 | CORE_ADDR name; | |
57 | long version; | |
58 | long info; | |
59 | long instance_size; | |
60 | CORE_ADDR ivars; | |
61 | CORE_ADDR methods; | |
62 | CORE_ADDR cache; | |
63 | CORE_ADDR protocols; | |
64 | }; | |
65 | ||
66 | struct objc_super { | |
67 | CORE_ADDR receiver; | |
fe978cb0 | 68 | CORE_ADDR theclass; |
b81654f1 MS |
69 | }; |
70 | ||
71 | struct objc_method { | |
72 | CORE_ADDR name; | |
73 | CORE_ADDR types; | |
74 | CORE_ADDR imp; | |
75 | }; | |
76 | ||
57a9e6af PP |
77 | static const struct objfile_data *objc_objfile_data; |
78 | ||
d2e6263c MS |
79 | /* Lookup a structure type named "struct NAME", visible in lexical |
80 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
81 | suitably defined. */ | |
b81654f1 MS |
82 | |
83 | struct symbol * | |
270140bd | 84 | lookup_struct_typedef (char *name, const struct block *block, int noerr) |
b81654f1 | 85 | { |
f86f5ca3 | 86 | struct symbol *sym; |
b81654f1 | 87 | |
d12307c1 | 88 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
b81654f1 MS |
89 | |
90 | if (sym == NULL) | |
91 | { | |
92 | if (noerr) | |
93 | return 0; | |
94 | else | |
8a3fe4f8 | 95 | error (_("No struct type named %s."), name); |
b81654f1 MS |
96 | } |
97 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
98 | { | |
99 | if (noerr) | |
100 | return 0; | |
101 | else | |
8a3fe4f8 | 102 | error (_("This context has class, union or enum %s, not a struct."), |
d2e6263c | 103 | name); |
b81654f1 MS |
104 | } |
105 | return sym; | |
106 | } | |
107 | ||
108 | CORE_ADDR | |
3b7538c0 | 109 | lookup_objc_class (struct gdbarch *gdbarch, char *classname) |
b81654f1 | 110 | { |
3b7538c0 | 111 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
112 | struct value * function, *classval; |
113 | ||
114 | if (! target_has_execution) | |
115 | { | |
d2e6263c | 116 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
117 | return 0; |
118 | } | |
119 | ||
3b7344d5 | 120 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0).minsym) |
3e3b026f | 121 | function = find_function_in_inferior("objc_lookUpClass", NULL); |
3b7344d5 | 122 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0).minsym) |
3e3b026f | 123 | function = find_function_in_inferior("objc_lookup_class", NULL); |
b81654f1 MS |
124 | else |
125 | { | |
0df8b418 MS |
126 | complaint (&symfile_complaints, |
127 | _("no way to lookup Objective-C classes")); | |
b81654f1 MS |
128 | return 0; |
129 | } | |
130 | ||
3b7538c0 | 131 | classval = value_string (classname, strlen (classname) + 1, char_type); |
b81654f1 MS |
132 | classval = value_coerce_array (classval); |
133 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
134 | 1, &classval)); | |
135 | } | |
136 | ||
c253954e | 137 | CORE_ADDR |
3b7538c0 | 138 | lookup_child_selector (struct gdbarch *gdbarch, char *selname) |
b81654f1 | 139 | { |
3b7538c0 | 140 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
141 | struct value * function, *selstring; |
142 | ||
143 | if (! target_has_execution) | |
144 | { | |
d2e6263c | 145 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
146 | return 0; |
147 | } | |
148 | ||
3b7344d5 | 149 | if (lookup_minimal_symbol("sel_getUid", 0, 0).minsym) |
3e3b026f | 150 | function = find_function_in_inferior("sel_getUid", NULL); |
3b7344d5 | 151 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0).minsym) |
3e3b026f | 152 | function = find_function_in_inferior("sel_get_any_uid", NULL); |
b81654f1 MS |
153 | else |
154 | { | |
0df8b418 MS |
155 | complaint (&symfile_complaints, |
156 | _("no way to lookup Objective-C selectors")); | |
b81654f1 MS |
157 | return 0; |
158 | } | |
159 | ||
d2e6263c | 160 | selstring = value_coerce_array (value_string (selname, |
0df8b418 MS |
161 | strlen (selname) + 1, |
162 | char_type)); | |
b81654f1 MS |
163 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
164 | } | |
165 | ||
166 | struct value * | |
3b7538c0 | 167 | value_nsstring (struct gdbarch *gdbarch, char *ptr, int len) |
b81654f1 | 168 | { |
3b7538c0 | 169 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
170 | struct value *stringValue[3]; |
171 | struct value *function, *nsstringValue; | |
172 | struct symbol *sym; | |
173 | struct type *type; | |
174 | ||
175 | if (!target_has_execution) | |
d2e6263c | 176 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 | 177 | |
3b7538c0 | 178 | stringValue[2] = value_string(ptr, len, char_type); |
b81654f1 | 179 | stringValue[2] = value_coerce_array(stringValue[2]); |
d2e6263c | 180 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
3b7344d5 | 181 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0).minsym) |
b81654f1 | 182 | { |
3b7538c0 | 183 | function = find_function_in_inferior("_NSNewStringFromCString", NULL); |
b81654f1 MS |
184 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
185 | } | |
3b7344d5 | 186 | else if (lookup_minimal_symbol("istr", 0, 0).minsym) |
b81654f1 | 187 | { |
3b7538c0 | 188 | function = find_function_in_inferior("istr", NULL); |
b81654f1 MS |
189 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
190 | } | |
3b7344d5 | 191 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0).minsym) |
b81654f1 | 192 | { |
3e3b026f | 193 | function |
3b7538c0 UW |
194 | = find_function_in_inferior("+[NSString stringWithCString:]", NULL); |
195 | type = builtin_type (gdbarch)->builtin_long; | |
3e3b026f | 196 | |
b81654f1 | 197 | stringValue[0] = value_from_longest |
3b7538c0 | 198 | (type, lookup_objc_class (gdbarch, "NSString")); |
b81654f1 | 199 | stringValue[1] = value_from_longest |
3b7538c0 | 200 | (type, lookup_child_selector (gdbarch, "stringWithCString:")); |
b81654f1 MS |
201 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); |
202 | } | |
203 | else | |
8a3fe4f8 | 204 | error (_("NSString: internal error -- no way to create new NSString")); |
b81654f1 | 205 | |
3e3b026f UW |
206 | sym = lookup_struct_typedef("NSString", 0, 1); |
207 | if (sym == NULL) | |
208 | sym = lookup_struct_typedef("NXString", 0, 1); | |
209 | if (sym == NULL) | |
210 | type = builtin_type (gdbarch)->builtin_data_ptr; | |
211 | else | |
212 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
213 | ||
04624583 | 214 | deprecated_set_value_type (nsstringValue, type); |
b81654f1 MS |
215 | return nsstringValue; |
216 | } | |
217 | ||
d2e6263c | 218 | /* Objective-C name demangling. */ |
b81654f1 MS |
219 | |
220 | char * | |
9a3d7dfd | 221 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
222 | { |
223 | char *demangled, *cp; | |
224 | ||
225 | if (mangled[0] == '_' && | |
226 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
227 | mangled[2] == '_') | |
228 | { | |
224c3ddb | 229 | cp = demangled = (char *) xmalloc (strlen (mangled) + 2); |
b81654f1 MS |
230 | |
231 | if (mangled[1] == 'i') | |
232 | *cp++ = '-'; /* for instance method */ | |
233 | else | |
234 | *cp++ = '+'; /* for class method */ | |
235 | ||
236 | *cp++ = '['; /* opening left brace */ | |
0df8b418 | 237 | strcpy(cp, mangled+3); /* Tack on the rest of the mangled name. */ |
b81654f1 MS |
238 | |
239 | while (*cp && *cp == '_') | |
0df8b418 MS |
240 | cp++; /* Skip any initial underbars in class |
241 | name. */ | |
b81654f1 | 242 | |
7248f48e | 243 | cp = strchr(cp, '_'); |
0df8b418 | 244 | if (!cp) /* Find first non-initial underbar. */ |
b81654f1 | 245 | { |
7248f48e | 246 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
247 | return NULL; |
248 | } | |
0df8b418 | 249 | if (cp[1] == '_') /* Easy case: no category name. */ |
5cc80db3 | 250 | { |
0df8b418 | 251 | *cp++ = ' '; /* Replace two '_' with one ' '. */ |
5cc80db3 MS |
252 | strcpy(cp, mangled + (cp - demangled) + 2); |
253 | } | |
254 | else | |
255 | { | |
0df8b418 | 256 | *cp++ = '('; /* Less easy case: category name. */ |
5cc80db3 MS |
257 | cp = strchr(cp, '_'); |
258 | if (!cp) | |
259 | { | |
260 | xfree(demangled); /* not mangled name */ | |
261 | return NULL; | |
262 | } | |
263 | *cp++ = ')'; | |
0df8b418 MS |
264 | *cp++ = ' '; /* Overwriting 1st char of method name... */ |
265 | strcpy(cp, mangled + (cp - demangled)); /* Get it back. */ | |
5cc80db3 | 266 | } |
b81654f1 MS |
267 | |
268 | while (*cp && *cp == '_') | |
0df8b418 MS |
269 | cp++; /* Skip any initial underbars in |
270 | method name. */ | |
b81654f1 MS |
271 | |
272 | for (; *cp; cp++) | |
273 | if (*cp == '_') | |
0df8b418 | 274 | *cp = ':'; /* Replace remaining '_' with ':'. */ |
b81654f1 MS |
275 | |
276 | *cp++ = ']'; /* closing right brace */ | |
277 | *cp++ = 0; /* string terminator */ | |
278 | return demangled; | |
279 | } | |
280 | else | |
d2e6263c | 281 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
282 | } |
283 | ||
f636b87d AF |
284 | /* Determine if we are currently in the Objective-C dispatch function. |
285 | If so, get the address of the method function that the dispatcher | |
0df8b418 | 286 | would call and use that as the function to step into instead. Also |
f636b87d AF |
287 | skip over the trampoline for the function (if any). This is better |
288 | for the user since they are only interested in stepping into the | |
289 | method function anyway. */ | |
290 | static CORE_ADDR | |
52f729a7 | 291 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
f636b87d | 292 | { |
d80b854b | 293 | struct gdbarch *gdbarch = get_frame_arch (frame); |
f636b87d AF |
294 | CORE_ADDR real_stop_pc; |
295 | CORE_ADDR method_stop_pc; | |
296 | ||
d80b854b | 297 | real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc); |
f636b87d AF |
298 | |
299 | if (real_stop_pc != 0) | |
300 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
301 | else | |
302 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
303 | ||
304 | if (method_stop_pc) | |
305 | { | |
e76f05fa | 306 | real_stop_pc = gdbarch_skip_trampoline_code |
d80b854b | 307 | (gdbarch, frame, method_stop_pc); |
f636b87d AF |
308 | if (real_stop_pc == 0) |
309 | real_stop_pc = method_stop_pc; | |
310 | } | |
311 | ||
312 | return real_stop_pc; | |
313 | } | |
314 | ||
b81654f1 MS |
315 | |
316 | /* Table mapping opcodes into strings for printing operators | |
317 | and precedences of the operators. */ | |
318 | ||
319 | static const struct op_print objc_op_print_tab[] = | |
320 | { | |
321 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
322 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
323 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
324 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
325 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
326 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
327 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
328 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
329 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
330 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
331 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
332 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
333 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
334 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
335 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
336 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
337 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
338 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
339 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
340 | {"%", BINOP_REM, PREC_MUL, 0}, | |
341 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
342 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
343 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
344 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
345 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
346 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
347 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
348 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
349 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 350 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
351 | }; |
352 | ||
56618e20 TT |
353 | static const char *objc_extensions[] = |
354 | { | |
355 | ".m", NULL | |
356 | }; | |
357 | ||
b81654f1 | 358 | const struct language_defn objc_language_defn = { |
d2e6263c | 359 | "objective-c", /* Language name */ |
6abde28f | 360 | "Objective-C", |
b81654f1 | 361 | language_objc, |
b81654f1 | 362 | range_check_off, |
b81654f1 | 363 | case_sensitive_on, |
7ca2d3a3 | 364 | array_row_major, |
9a044a89 | 365 | macro_expansion_c, |
56618e20 | 366 | objc_extensions, |
5f9769d1 | 367 | &exp_descriptor_standard, |
f2e8016f | 368 | c_parse, |
b3f11165 | 369 | c_yyerror, |
e85c3284 | 370 | null_post_parser, |
8a808554 TT |
371 | c_printchar, /* Print a character constant */ |
372 | c_printstr, /* Function to print string constant */ | |
373 | c_emit_char, | |
b81654f1 | 374 | c_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 375 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
b81654f1 MS |
376 | c_val_print, /* Print a value using appropriate syntax */ |
377 | c_value_print, /* Print a top-level value */ | |
a5ee536b | 378 | default_read_var_value, /* la_read_var_value */ |
f636b87d | 379 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
2b2d9e11 | 380 | "self", /* name_of_this */ |
5f9a71c3 | 381 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
b368761e | 382 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 383 | objc_demangle, /* Language specific symbol demangler */ |
0df8b418 MS |
384 | NULL, /* Language specific |
385 | class_name_from_physname */ | |
d2e6263c MS |
386 | objc_op_print_tab, /* Expression operators for printing */ |
387 | 1, /* C-style arrays */ | |
b81654f1 | 388 | 0, /* String lower bound */ |
6084f43a | 389 | default_word_break_characters, |
41d27058 | 390 | default_make_symbol_completion_list, |
cad351d1 | 391 | c_language_arch_info, |
e79af960 | 392 | default_print_array_index, |
41f1b697 | 393 | default_pass_by_reference, |
ae6a3a4c | 394 | default_get_string, |
1a119f36 | 395 | NULL, /* la_get_symbol_name_cmp */ |
f8eba3c6 | 396 | iterate_over_symbols, |
a53b64ea | 397 | &default_varobj_ops, |
bb2ec1b3 TT |
398 | NULL, |
399 | NULL, | |
b81654f1 MS |
400 | LANG_MAGIC |
401 | }; | |
402 | ||
403 | /* | |
404 | * ObjC: | |
0df8b418 | 405 | * Following functions help construct Objective-C message calls. |
b81654f1 MS |
406 | */ |
407 | ||
d2e6263c | 408 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
409 | { |
410 | struct selname *next; | |
411 | char *msglist_sel; | |
412 | int msglist_len; | |
413 | }; | |
414 | ||
415 | static int msglist_len; | |
416 | static struct selname *selname_chain; | |
417 | static char *msglist_sel; | |
418 | ||
419 | void | |
420 | start_msglist(void) | |
421 | { | |
8d749320 | 422 | struct selname *newobj = XNEW (struct selname); |
b81654f1 | 423 | |
fe978cb0 PA |
424 | newobj->next = selname_chain; |
425 | newobj->msglist_len = msglist_len; | |
426 | newobj->msglist_sel = msglist_sel; | |
b81654f1 MS |
427 | msglist_len = 0; |
428 | msglist_sel = (char *)xmalloc(1); | |
429 | *msglist_sel = 0; | |
fe978cb0 | 430 | selname_chain = newobj; |
b81654f1 MS |
431 | } |
432 | ||
433 | void | |
434 | add_msglist(struct stoken *str, int addcolon) | |
435 | { | |
d7561cbb KS |
436 | char *s; |
437 | const char *p; | |
b81654f1 MS |
438 | int len, plen; |
439 | ||
5cc80db3 MS |
440 | if (str == 0) /* Unnamed arg, or... */ |
441 | { | |
442 | if (addcolon == 0) /* variable number of args. */ | |
443 | { | |
444 | msglist_len++; | |
445 | return; | |
446 | } | |
447 | p = ""; | |
448 | plen = 0; | |
449 | } | |
450 | else | |
451 | { | |
452 | p = str->ptr; | |
453 | plen = str->length; | |
b81654f1 | 454 | } |
b81654f1 MS |
455 | len = plen + strlen(msglist_sel) + 2; |
456 | s = (char *)xmalloc(len); | |
457 | strcpy(s, msglist_sel); | |
458 | strncat(s, p, plen); | |
7248f48e | 459 | xfree(msglist_sel); |
b81654f1 | 460 | msglist_sel = s; |
5cc80db3 MS |
461 | if (addcolon) |
462 | { | |
463 | s[len-2] = ':'; | |
464 | s[len-1] = 0; | |
465 | msglist_len++; | |
466 | } | |
467 | else | |
b81654f1 MS |
468 | s[len-2] = '\0'; |
469 | } | |
470 | ||
471 | int | |
410a0ff2 | 472 | end_msglist (struct parser_state *ps) |
b81654f1 | 473 | { |
f86f5ca3 PH |
474 | int val = msglist_len; |
475 | struct selname *sel = selname_chain; | |
476 | char *p = msglist_sel; | |
c253954e | 477 | CORE_ADDR selid; |
b81654f1 MS |
478 | |
479 | selname_chain = sel->next; | |
480 | msglist_len = sel->msglist_len; | |
481 | msglist_sel = sel->msglist_sel; | |
410a0ff2 | 482 | selid = lookup_child_selector (parse_gdbarch (ps), p); |
b81654f1 | 483 | if (!selid) |
8a3fe4f8 | 484 | error (_("Can't find selector \"%s\""), p); |
410a0ff2 | 485 | write_exp_elt_longcst (ps, selid); |
7248f48e | 486 | xfree(p); |
410a0ff2 | 487 | write_exp_elt_longcst (ps, val); /* Number of args */ |
7248f48e | 488 | xfree(sel); |
b81654f1 MS |
489 | |
490 | return val; | |
491 | } | |
492 | ||
493 | /* | |
0d5cff50 | 494 | * Function: specialcmp (const char *a, const char *b) |
b81654f1 MS |
495 | * |
496 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 497 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
498 | */ |
499 | ||
b9362cc7 | 500 | static int |
0d5cff50 | 501 | specialcmp (const char *a, const char *b) |
b81654f1 MS |
502 | { |
503 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
504 | { | |
505 | if (*a != *b) | |
506 | return *a - *b; | |
507 | a++, b++; | |
508 | } | |
509 | if (*a && *a != ' ' && *a != ']') | |
0df8b418 | 510 | return 1; /* a is longer therefore greater. */ |
b81654f1 | 511 | if (*b && *b != ' ' && *b != ']') |
0df8b418 MS |
512 | return -1; /* a is shorter therefore lesser. */ |
513 | return 0; /* a and b are identical. */ | |
b81654f1 MS |
514 | } |
515 | ||
516 | /* | |
36e53c63 | 517 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 518 | * |
d2e6263c MS |
519 | * Comparison function for use with qsort. Arguments are symbols or |
520 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
521 | */ |
522 | ||
523 | static int | |
36e53c63 | 524 | compare_selectors (const void *a, const void *b) |
b81654f1 | 525 | { |
0d5cff50 | 526 | const char *aname, *bname; |
b81654f1 | 527 | |
de5ad195 DC |
528 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
529 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 530 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 531 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 532 | |
7248f48e AF |
533 | aname = strchr(aname, ' '); |
534 | bname = strchr(bname, ' '); | |
535 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 536 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
537 | |
538 | return specialcmp (aname+1, bname+1); | |
539 | } | |
540 | ||
541 | /* | |
542 | * Function: selectors_info (regexp, from_tty) | |
543 | * | |
d2e6263c MS |
544 | * Implements the "Info selectors" command. Takes an optional regexp |
545 | * arg. Lists all objective c selectors that match the regexp. Works | |
546 | * by grepping thru all symbols for objective c methods. Output list | |
547 | * is sorted and uniqued. | |
b81654f1 MS |
548 | */ |
549 | ||
550 | static void | |
551 | selectors_info (char *regexp, int from_tty) | |
552 | { | |
553 | struct objfile *objfile; | |
554 | struct minimal_symbol *msymbol; | |
0d5cff50 | 555 | const char *name; |
b81654f1 MS |
556 | char *val; |
557 | int matches = 0; | |
558 | int maxlen = 0; | |
559 | int ix; | |
560 | char myregexp[2048]; | |
561 | char asel[256]; | |
562 | struct symbol **sym_arr; | |
563 | int plusminus = 0; | |
564 | ||
565 | if (regexp == NULL) | |
d2e6263c | 566 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
567 | else |
568 | { | |
d2e6263c MS |
569 | if (*regexp == '+' || *regexp == '-') |
570 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
571 | plusminus = *regexp++; |
572 | while (*regexp == ' ' || *regexp == '\t') | |
573 | regexp++; | |
574 | } | |
575 | if (*regexp == '\0') | |
576 | strcpy(myregexp, ".*]"); | |
577 | else | |
578 | { | |
a9dc8dcc | 579 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 | 580 | if (sizeof (myregexp) < strlen (regexp) + 4) |
20937029 JK |
581 | error (_("Regexp is too long: %s"), regexp); |
582 | strcpy(myregexp, regexp); | |
b81654f1 MS |
583 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ |
584 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
585 | else | |
586 | strcat(myregexp, ".*]"); | |
587 | } | |
588 | } | |
589 | ||
590 | if (regexp != NULL) | |
5e488a7b AC |
591 | { |
592 | val = re_comp (myregexp); | |
593 | if (val != 0) | |
8a3fe4f8 | 594 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 595 | } |
b81654f1 | 596 | |
d2e6263c | 597 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
598 | ALL_MSYMBOLS (objfile, msymbol) |
599 | { | |
600 | QUIT; | |
efd66ac6 | 601 | name = MSYMBOL_NATURAL_NAME (msymbol); |
3e6ef9e4 JB |
602 | if (name |
603 | && (name[0] == '-' || name[0] == '+') | |
604 | && name[1] == '[') /* Got a method name. */ | |
b81654f1 | 605 | { |
d2e6263c | 606 | /* Filter for class/instance methods. */ |
b81654f1 | 607 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
608 | continue; |
609 | /* Find selector part. */ | |
3e6ef9e4 | 610 | name = (char *) strchr (name+2, ' '); |
50412521 MS |
611 | if (name == NULL) |
612 | { | |
613 | complaint (&symfile_complaints, | |
614 | _("Bad method name '%s'"), | |
efd66ac6 | 615 | MSYMBOL_NATURAL_NAME (msymbol)); |
50412521 MS |
616 | continue; |
617 | } | |
b81654f1 MS |
618 | if (regexp == NULL || re_exec(++name) != 0) |
619 | { | |
0d5cff50 DE |
620 | const char *mystart = name; |
621 | const char *myend = strchr (mystart, ']'); | |
b81654f1 MS |
622 | |
623 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 624 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
625 | matches++; |
626 | } | |
627 | } | |
628 | } | |
629 | if (matches) | |
630 | { | |
a3f17187 | 631 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
632 | regexp ? regexp : "*"); |
633 | ||
8d749320 | 634 | sym_arr = XALLOCAVEC (struct symbol *, matches); |
b81654f1 MS |
635 | matches = 0; |
636 | ALL_MSYMBOLS (objfile, msymbol) | |
637 | { | |
638 | QUIT; | |
efd66ac6 | 639 | name = MSYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
640 | if (name && |
641 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 642 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 643 | { |
d2e6263c | 644 | /* Filter for class/instance methods. */ |
b81654f1 | 645 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
646 | continue; |
647 | /* Find selector part. */ | |
648 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
649 | if (regexp == NULL || re_exec(++name) != 0) |
650 | sym_arr[matches++] = (struct symbol *) msymbol; | |
651 | } | |
652 | } | |
653 | ||
654 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
655 | compare_selectors); | |
d2e6263c MS |
656 | /* Prevent compare on first iteration. */ |
657 | asel[0] = 0; | |
658 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
659 | { |
660 | char *p = asel; | |
661 | ||
662 | QUIT; | |
36018d2e | 663 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
664 | name = strchr (name, ' ') + 1; |
665 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 666 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 667 | |
d2e6263c MS |
668 | /* Copy selector part. */ |
669 | while (*name && *name != ']') | |
b81654f1 MS |
670 | *p++ = *name++; |
671 | *p++ = '\0'; | |
d2e6263c MS |
672 | /* Print in columns. */ |
673 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
674 | } |
675 | begin_line(); | |
676 | } | |
677 | else | |
0df8b418 MS |
678 | printf_filtered (_("No selectors matching \"%s\"\n"), |
679 | regexp ? regexp : "*"); | |
b81654f1 MS |
680 | } |
681 | ||
682 | /* | |
36e53c63 | 683 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 684 | * |
d2e6263c MS |
685 | * Comparison function for use with qsort. Arguments are symbols or |
686 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
687 | */ |
688 | ||
689 | static int | |
36e53c63 | 690 | compare_classes (const void *a, const void *b) |
b81654f1 | 691 | { |
0d5cff50 | 692 | const char *aname, *bname; |
b81654f1 | 693 | |
de5ad195 DC |
694 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
695 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 696 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 697 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
698 | |
699 | return specialcmp (aname+1, bname+1); | |
700 | } | |
701 | ||
702 | /* | |
703 | * Function: classes_info(regexp, from_tty) | |
704 | * | |
705 | * Implements the "info classes" command for objective c classes. | |
706 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
707 | * Works by grepping thru the list of objective c methods. List will |
708 | * be sorted and uniqued (since one class may have many methods). | |
709 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
710 | */ |
711 | ||
712 | static void | |
713 | classes_info (char *regexp, int from_tty) | |
714 | { | |
715 | struct objfile *objfile; | |
716 | struct minimal_symbol *msymbol; | |
0d5cff50 | 717 | const char *name; |
b81654f1 MS |
718 | char *val; |
719 | int matches = 0; | |
720 | int maxlen = 0; | |
721 | int ix; | |
722 | char myregexp[2048]; | |
723 | char aclass[256]; | |
724 | struct symbol **sym_arr; | |
725 | ||
726 | if (regexp == NULL) | |
d2e6263c | 727 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
728 | else |
729 | { | |
a9dc8dcc | 730 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 MS |
731 | if (sizeof (myregexp) < strlen (regexp) + 4) |
732 | error (_("Regexp is too long: %s"), regexp); | |
b81654f1 MS |
733 | strcpy(myregexp, regexp); |
734 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 735 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
736 | myregexp[strlen(myregexp) - 1] = ' '; |
737 | else | |
738 | strcat(myregexp, ".* "); | |
739 | } | |
740 | ||
741 | if (regexp != NULL) | |
5e488a7b AC |
742 | { |
743 | val = re_comp (myregexp); | |
744 | if (val != 0) | |
8a3fe4f8 | 745 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 746 | } |
b81654f1 | 747 | |
d2e6263c | 748 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
749 | ALL_MSYMBOLS (objfile, msymbol) |
750 | { | |
751 | QUIT; | |
efd66ac6 | 752 | name = MSYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
753 | if (name && |
754 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 755 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
756 | if (regexp == NULL || re_exec(name+2) != 0) |
757 | { | |
d2e6263c | 758 | /* Compute length of classname part. */ |
0d5cff50 DE |
759 | const char *mystart = name + 2; |
760 | const char *myend = strchr (mystart, ' '); | |
b81654f1 MS |
761 | |
762 | if (myend && (myend - mystart > maxlen)) | |
763 | maxlen = myend - mystart; | |
764 | matches++; | |
765 | } | |
766 | } | |
767 | if (matches) | |
768 | { | |
a3f17187 | 769 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 | 770 | regexp ? regexp : "*"); |
8d749320 | 771 | sym_arr = XALLOCAVEC (struct symbol *, matches); |
b81654f1 MS |
772 | matches = 0; |
773 | ALL_MSYMBOLS (objfile, msymbol) | |
774 | { | |
775 | QUIT; | |
efd66ac6 | 776 | name = MSYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
777 | if (name && |
778 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 779 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
780 | if (regexp == NULL || re_exec(name+2) != 0) |
781 | sym_arr[matches++] = (struct symbol *) msymbol; | |
782 | } | |
783 | ||
784 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
785 | compare_classes); | |
d2e6263c MS |
786 | /* Prevent compare on first iteration. */ |
787 | aclass[0] = 0; | |
788 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
789 | { |
790 | char *p = aclass; | |
791 | ||
792 | QUIT; | |
36018d2e | 793 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
794 | name += 2; |
795 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 796 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 797 | |
d2e6263c MS |
798 | /* Copy class part of method name. */ |
799 | while (*name && *name != ' ') | |
b81654f1 MS |
800 | *p++ = *name++; |
801 | *p++ = '\0'; | |
d2e6263c MS |
802 | /* Print in columns. */ |
803 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
804 | } |
805 | begin_line(); | |
806 | } | |
807 | else | |
a3f17187 | 808 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
809 | } |
810 | ||
f8eba3c6 | 811 | static char * |
b81654f1 MS |
812 | parse_selector (char *method, char **selector) |
813 | { | |
814 | char *s1 = NULL; | |
815 | char *s2 = NULL; | |
816 | int found_quote = 0; | |
817 | ||
818 | char *nselector = NULL; | |
819 | ||
e8f3fcdd | 820 | gdb_assert (selector != NULL); |
b81654f1 MS |
821 | |
822 | s1 = method; | |
823 | ||
529480d0 | 824 | s1 = skip_spaces (s1); |
b81654f1 MS |
825 | if (*s1 == '\'') |
826 | { | |
827 | found_quote = 1; | |
828 | s1++; | |
829 | } | |
529480d0 | 830 | s1 = skip_spaces (s1); |
b81654f1 MS |
831 | |
832 | nselector = s1; | |
833 | s2 = s1; | |
834 | ||
5cc80db3 MS |
835 | for (;;) |
836 | { | |
837 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
838 | *s1++ = *s2; | |
839 | else if (isspace (*s2)) | |
840 | ; | |
841 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
842 | break; | |
843 | else | |
844 | return NULL; | |
845 | s2++; | |
846 | } | |
b81654f1 MS |
847 | *s1++ = '\0'; |
848 | ||
529480d0 | 849 | s2 = skip_spaces (s2); |
b81654f1 MS |
850 | if (found_quote) |
851 | { | |
852 | if (*s2 == '\'') | |
853 | s2++; | |
529480d0 | 854 | s2 = skip_spaces (s2); |
b81654f1 MS |
855 | } |
856 | ||
857 | if (selector != NULL) | |
858 | *selector = nselector; | |
859 | ||
860 | return s2; | |
861 | } | |
862 | ||
f8eba3c6 | 863 | static char * |
fe978cb0 | 864 | parse_method (char *method, char *type, char **theclass, |
d2e6263c | 865 | char **category, char **selector) |
b81654f1 MS |
866 | { |
867 | char *s1 = NULL; | |
868 | char *s2 = NULL; | |
869 | int found_quote = 0; | |
870 | ||
871 | char ntype = '\0'; | |
872 | char *nclass = NULL; | |
873 | char *ncategory = NULL; | |
874 | char *nselector = NULL; | |
875 | ||
e8f3fcdd | 876 | gdb_assert (type != NULL); |
fe978cb0 | 877 | gdb_assert (theclass != NULL); |
e8f3fcdd AC |
878 | gdb_assert (category != NULL); |
879 | gdb_assert (selector != NULL); | |
b81654f1 MS |
880 | |
881 | s1 = method; | |
882 | ||
529480d0 | 883 | s1 = skip_spaces (s1); |
b81654f1 MS |
884 | if (*s1 == '\'') |
885 | { | |
886 | found_quote = 1; | |
887 | s1++; | |
888 | } | |
529480d0 | 889 | s1 = skip_spaces (s1); |
b81654f1 MS |
890 | |
891 | if ((s1[0] == '+') || (s1[0] == '-')) | |
892 | ntype = *s1++; | |
893 | ||
529480d0 | 894 | s1 = skip_spaces (s1); |
b81654f1 MS |
895 | |
896 | if (*s1 != '[') | |
897 | return NULL; | |
898 | s1++; | |
899 | ||
900 | nclass = s1; | |
901 | while (isalnum (*s1) || (*s1 == '_')) | |
902 | s1++; | |
903 | ||
904 | s2 = s1; | |
529480d0 | 905 | s2 = skip_spaces (s2); |
b81654f1 MS |
906 | |
907 | if (*s2 == '(') | |
908 | { | |
909 | s2++; | |
529480d0 | 910 | s2 = skip_spaces (s2); |
b81654f1 MS |
911 | ncategory = s2; |
912 | while (isalnum (*s2) || (*s2 == '_')) | |
913 | s2++; | |
914 | *s2++ = '\0'; | |
915 | } | |
916 | ||
d2e6263c | 917 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
918 | *s1++ = '\0'; |
919 | ||
920 | nselector = s2; | |
921 | s1 = s2; | |
922 | ||
5cc80db3 MS |
923 | for (;;) |
924 | { | |
925 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
926 | *s1++ = *s2; | |
927 | else if (isspace (*s2)) | |
928 | ; | |
929 | else if (*s2 == ']') | |
930 | break; | |
931 | else | |
932 | return NULL; | |
933 | s2++; | |
934 | } | |
b81654f1 MS |
935 | *s1++ = '\0'; |
936 | s2++; | |
937 | ||
529480d0 | 938 | s2 = skip_spaces (s2); |
b81654f1 MS |
939 | if (found_quote) |
940 | { | |
941 | if (*s2 != '\'') | |
942 | return NULL; | |
943 | s2++; | |
529480d0 | 944 | s2 = skip_spaces (s2); |
b81654f1 MS |
945 | } |
946 | ||
947 | if (type != NULL) | |
948 | *type = ntype; | |
fe978cb0 PA |
949 | if (theclass != NULL) |
950 | *theclass = nclass; | |
b81654f1 MS |
951 | if (category != NULL) |
952 | *category = ncategory; | |
953 | if (selector != NULL) | |
954 | *selector = nselector; | |
955 | ||
956 | return s2; | |
957 | } | |
958 | ||
2f9a90b4 | 959 | static void |
fe978cb0 | 960 | find_methods (char type, const char *theclass, const char *category, |
f8eba3c6 TT |
961 | const char *selector, |
962 | VEC (const_char_ptr) **symbol_names) | |
b81654f1 MS |
963 | { |
964 | struct objfile *objfile = NULL; | |
b81654f1 | 965 | |
0d5cff50 | 966 | const char *symname = NULL; |
b81654f1 MS |
967 | |
968 | char ntype = '\0'; | |
969 | char *nclass = NULL; | |
970 | char *ncategory = NULL; | |
971 | char *nselector = NULL; | |
972 | ||
b81654f1 MS |
973 | static char *tmp = NULL; |
974 | static unsigned int tmplen = 0; | |
975 | ||
f8eba3c6 | 976 | gdb_assert (symbol_names != NULL); |
b81654f1 | 977 | |
57a9e6af | 978 | ALL_OBJFILES (objfile) |
b81654f1 | 979 | { |
57a9e6af | 980 | unsigned int *objc_csym; |
f8eba3c6 | 981 | struct minimal_symbol *msymbol = NULL; |
b81654f1 | 982 | |
57a9e6af PP |
983 | /* The objfile_csym variable counts the number of ObjC methods |
984 | that this objfile defines. We save that count as a private | |
985 | objfile data. If we have already determined that this objfile | |
986 | provides no ObjC methods, we can skip it entirely. */ | |
b81654f1 | 987 | |
57a9e6af | 988 | unsigned int objfile_csym = 0; |
b81654f1 | 989 | |
19ba03f4 | 990 | objc_csym = (unsigned int *) objfile_data (objfile, objc_objfile_data); |
57a9e6af PP |
991 | if (objc_csym != NULL && *objc_csym == 0) |
992 | /* There are no ObjC symbols in this objfile. Skip it entirely. */ | |
b81654f1 MS |
993 | continue; |
994 | ||
57a9e6af | 995 | ALL_OBJFILE_MSYMBOLS (objfile, msymbol) |
b81654f1 | 996 | { |
57a9e6af | 997 | QUIT; |
b81654f1 | 998 | |
0c4b2e63 MF |
999 | /* Check the symbol name first as this can be done entirely without |
1000 | sending any query to the target. */ | |
efd66ac6 | 1001 | symname = MSYMBOL_NATURAL_NAME (msymbol); |
0c4b2e63 MF |
1002 | if (symname == NULL) |
1003 | continue; | |
1004 | ||
1005 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1006 | /* Not a method name. */ | |
1007 | continue; | |
1008 | ||
8dfd1e6d KS |
1009 | objfile_csym++; |
1010 | ||
0c4b2e63 | 1011 | /* Now that thinks are a bit sane, clean up the symname. */ |
57a9e6af PP |
1012 | while ((strlen (symname) + 1) >= tmplen) |
1013 | { | |
1014 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
224c3ddb | 1015 | tmp = (char *) xrealloc (tmp, tmplen); |
57a9e6af PP |
1016 | } |
1017 | strcpy (tmp, symname); | |
b81654f1 | 1018 | |
0df8b418 MS |
1019 | if (parse_method (tmp, &ntype, &nclass, |
1020 | &ncategory, &nselector) == NULL) | |
57a9e6af | 1021 | continue; |
b81654f1 | 1022 | |
57a9e6af PP |
1023 | if ((type != '\0') && (ntype != type)) |
1024 | continue; | |
b81654f1 | 1025 | |
fe978cb0 PA |
1026 | if ((theclass != NULL) |
1027 | && ((nclass == NULL) || (strcmp (theclass, nclass) != 0))) | |
57a9e6af PP |
1028 | continue; |
1029 | ||
1030 | if ((category != NULL) && | |
1031 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1032 | continue; | |
b81654f1 | 1033 | |
57a9e6af PP |
1034 | if ((selector != NULL) && |
1035 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1036 | continue; | |
1037 | ||
f8eba3c6 | 1038 | VEC_safe_push (const_char_ptr, *symbol_names, symname); |
57a9e6af | 1039 | } |
f8eba3c6 | 1040 | |
57a9e6af | 1041 | if (objc_csym == NULL) |
b81654f1 | 1042 | { |
8d749320 | 1043 | objc_csym = XOBNEW (&objfile->objfile_obstack, unsigned int); |
57a9e6af PP |
1044 | *objc_csym = objfile_csym; |
1045 | set_objfile_data (objfile, objc_objfile_data, objc_csym); | |
b81654f1 | 1046 | } |
57a9e6af PP |
1047 | else |
1048 | /* Count of ObjC methods in this objfile should be constant. */ | |
1049 | gdb_assert (*objc_csym == objfile_csym); | |
b81654f1 | 1050 | } |
f8eba3c6 | 1051 | } |
b81654f1 | 1052 | |
f8eba3c6 TT |
1053 | /* Uniquify a VEC of strings. */ |
1054 | ||
1055 | static void | |
1056 | uniquify_strings (VEC (const_char_ptr) **strings) | |
1057 | { | |
1058 | int ix; | |
1059 | const char *elem, *last = NULL; | |
1060 | int out; | |
1061 | ||
ee7615e1 AA |
1062 | /* If the vector is empty, there's nothing to do. This explicit |
1063 | check is needed to avoid invoking qsort with NULL. */ | |
1064 | if (VEC_empty (const_char_ptr, *strings)) | |
1065 | return; | |
1066 | ||
f8eba3c6 TT |
1067 | qsort (VEC_address (const_char_ptr, *strings), |
1068 | VEC_length (const_char_ptr, *strings), | |
1069 | sizeof (const_char_ptr), | |
1070 | compare_strings); | |
1071 | out = 0; | |
1072 | for (ix = 0; VEC_iterate (const_char_ptr, *strings, ix, elem); ++ix) | |
1073 | { | |
1074 | if (last == NULL || strcmp (last, elem) != 0) | |
1075 | { | |
1076 | /* Keep ELEM. */ | |
1077 | VEC_replace (const_char_ptr, *strings, out, elem); | |
1078 | ++out; | |
1079 | } | |
1080 | last = elem; | |
1081 | } | |
1082 | VEC_truncate (const_char_ptr, *strings, out); | |
b81654f1 MS |
1083 | } |
1084 | ||
f8eba3c6 | 1085 | /* |
d7561cbb | 1086 | * Function: find_imps (const char *selector, struct symbol **sym_arr) |
f8eba3c6 TT |
1087 | * |
1088 | * Input: a string representing a selector | |
1089 | * a pointer to an array of symbol pointers | |
1090 | * possibly a pointer to a symbol found by the caller. | |
1091 | * | |
1092 | * Output: number of methods that implement that selector. Side | |
1093 | * effects: The array of symbol pointers is filled with matching syms. | |
1094 | * | |
1095 | * By analogy with function "find_methods" (symtab.c), builds a list | |
1096 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1097 | * (symtab.c) can list them and ask the user to choose one or more. | |
1098 | * In this case the matches are objective c methods | |
1099 | * ("implementations") matching an objective c selector. | |
1100 | * | |
1101 | * Note that it is possible for a normal (c-style) function to have | |
1102 | * the same name as an objective c selector. To prevent the selector | |
1103 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1104 | * search for such a function first, and if it finds one, pass it in | |
1105 | * to us. We will then integrate it into the list. We also search | |
1106 | * for one here, among the minsyms. | |
1107 | * | |
1108 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided | |
1109 | * into two parts: debuggable (struct symbol) syms, and | |
1110 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1111 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1112 | * be the index of the first non-debuggable one). | |
1113 | */ | |
1114 | ||
d7561cbb KS |
1115 | const char * |
1116 | find_imps (const char *method, VEC (const_char_ptr) **symbol_names) | |
b81654f1 MS |
1117 | { |
1118 | char type = '\0'; | |
fe978cb0 | 1119 | char *theclass = NULL; |
b81654f1 MS |
1120 | char *category = NULL; |
1121 | char *selector = NULL; | |
1122 | ||
b81654f1 MS |
1123 | char *buf = NULL; |
1124 | char *tmp = NULL; | |
1125 | ||
f8eba3c6 | 1126 | int selector_case = 0; |
b81654f1 | 1127 | |
f8eba3c6 | 1128 | gdb_assert (symbol_names != NULL); |
b81654f1 MS |
1129 | |
1130 | buf = (char *) alloca (strlen (method) + 1); | |
1131 | strcpy (buf, method); | |
fe978cb0 | 1132 | tmp = parse_method (buf, &type, &theclass, &category, &selector); |
b81654f1 | 1133 | |
5cc80db3 MS |
1134 | if (tmp == NULL) |
1135 | { | |
5cc80db3 MS |
1136 | strcpy (buf, method); |
1137 | tmp = parse_selector (buf, &selector); | |
b81654f1 | 1138 | |
5cc80db3 MS |
1139 | if (tmp == NULL) |
1140 | return NULL; | |
1141 | ||
f8eba3c6 | 1142 | selector_case = 1; |
5cc80db3 | 1143 | } |
b81654f1 | 1144 | |
fe978cb0 | 1145 | find_methods (type, theclass, category, selector, symbol_names); |
b81654f1 | 1146 | |
f8eba3c6 TT |
1147 | /* If we hit the "selector" case, and we found some methods, then |
1148 | add the selector itself as a symbol, if it exists. */ | |
1149 | if (selector_case && !VEC_empty (const_char_ptr, *symbol_names)) | |
b81654f1 | 1150 | { |
d12307c1 PMR |
1151 | struct symbol *sym = lookup_symbol (selector, NULL, VAR_DOMAIN, |
1152 | 0).symbol; | |
f8eba3c6 TT |
1153 | |
1154 | if (sym != NULL) | |
1155 | VEC_safe_push (const_char_ptr, *symbol_names, | |
1156 | SYMBOL_NATURAL_NAME (sym)); | |
1157 | else | |
b81654f1 | 1158 | { |
3b7344d5 TT |
1159 | struct bound_minimal_symbol msym |
1160 | = lookup_minimal_symbol (selector, 0, 0); | |
f8eba3c6 | 1161 | |
3b7344d5 | 1162 | if (msym.minsym != NULL) |
f8eba3c6 | 1163 | VEC_safe_push (const_char_ptr, *symbol_names, |
3b7344d5 | 1164 | MSYMBOL_NATURAL_NAME (msym.minsym)); |
b81654f1 MS |
1165 | } |
1166 | } | |
1167 | ||
f8eba3c6 | 1168 | uniquify_strings (symbol_names); |
b81654f1 MS |
1169 | |
1170 | return method + (tmp - buf); | |
1171 | } | |
1172 | ||
b9362cc7 | 1173 | static void |
b81654f1 MS |
1174 | print_object_command (char *args, int from_tty) |
1175 | { | |
1176 | struct value *object, *function, *description; | |
36e53c63 | 1177 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1178 | int i = 0; |
22a44745 | 1179 | gdb_byte c = 0; |
b81654f1 MS |
1180 | |
1181 | if (!args || !*args) | |
d2e6263c MS |
1182 | error ( |
1183 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1184 | |
1185 | { | |
1186 | struct expression *expr = parse_expression (args); | |
f86f5ca3 | 1187 | struct cleanup *old_chain = |
d2e6263c | 1188 | make_cleanup (free_current_contents, &expr); |
b81654f1 MS |
1189 | int pc = 0; |
1190 | ||
4b27a620 JB |
1191 | object = evaluate_subexp (builtin_type (expr->gdbarch)->builtin_data_ptr, |
1192 | expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1193 | do_cleanups (old_chain); |
1194 | } | |
1195 | ||
36e53c63 AF |
1196 | /* Validate the address for sanity. */ |
1197 | object_addr = value_as_long (object); | |
1198 | read_memory (object_addr, &c, 1); | |
1199 | ||
3e3b026f | 1200 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); |
36e53c63 | 1201 | if (function == NULL) |
8a3fe4f8 | 1202 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 MS |
1203 | |
1204 | description = call_function_by_hand (function, 1, &object); | |
1205 | ||
7248f48e AF |
1206 | string_addr = value_as_long (description); |
1207 | if (string_addr == 0) | |
8a3fe4f8 | 1208 | error (_("object returns null description")); |
b81654f1 MS |
1209 | |
1210 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1211 | if (c != 0) |
b81654f1 | 1212 | do |
d2e6263c | 1213 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1214 | QUIT; |
1215 | printf_filtered ("%c", c); | |
1216 | read_memory (string_addr + i++, &c, 1); | |
1217 | } while (c != 0); | |
1218 | else | |
a3f17187 | 1219 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1220 | printf_filtered ("\n"); |
1221 | } | |
1222 | ||
d2e6263c MS |
1223 | /* The data structure 'methcalls' is used to detect method calls (thru |
1224 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
0df8b418 | 1225 | * and ultimately find the method being called. |
b81654f1 MS |
1226 | */ |
1227 | ||
1228 | struct objc_methcall { | |
1229 | char *name; | |
d2e6263c | 1230 | /* Return instance method to be called. */ |
36e53c63 | 1231 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1232 | /* Start of pc range corresponding to method invocation. */ |
1233 | CORE_ADDR begin; | |
1234 | /* End of pc range corresponding to method invocation. */ | |
1235 | CORE_ADDR end; | |
b81654f1 MS |
1236 | }; |
1237 | ||
d2e6263c MS |
1238 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1239 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1240 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1241 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1242 | |
1243 | static struct objc_methcall methcalls[] = { | |
1244 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1245 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1246 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1247 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1248 | { "_objc_getClass", NULL, 0, 0}, | |
1249 | { "_objc_getMetaClass", NULL, 0, 0} | |
1250 | }; | |
1251 | ||
1252 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1253 | ||
d2e6263c MS |
1254 | /* The following function, "find_objc_msgsend", fills in the data |
1255 | * structure "objc_msgs" by finding the addresses of each of the | |
1256 | * (currently four) functions that it holds (of which objc_msgSend is | |
1257 | * the first). This must be called each time symbols are loaded, in | |
0df8b418 | 1258 | * case the functions have moved for some reason. |
b81654f1 MS |
1259 | */ |
1260 | ||
b9362cc7 | 1261 | static void |
b81654f1 MS |
1262 | find_objc_msgsend (void) |
1263 | { | |
1264 | unsigned int i; | |
b81654f1 | 1265 | |
5cc80db3 MS |
1266 | for (i = 0; i < nmethcalls; i++) |
1267 | { | |
50e65b17 | 1268 | struct bound_minimal_symbol func; |
b81654f1 | 1269 | |
5cc80db3 | 1270 | /* Try both with and without underscore. */ |
50e65b17 TT |
1271 | func = lookup_bound_minimal_symbol (methcalls[i].name); |
1272 | if ((func.minsym == NULL) && (methcalls[i].name[0] == '_')) | |
5cc80db3 | 1273 | { |
50e65b17 | 1274 | func = lookup_bound_minimal_symbol (methcalls[i].name + 1); |
5cc80db3 | 1275 | } |
50e65b17 | 1276 | if (func.minsym == NULL) |
5cc80db3 MS |
1277 | { |
1278 | methcalls[i].begin = 0; | |
1279 | methcalls[i].end = 0; | |
1280 | continue; | |
1281 | } | |
1282 | ||
77e371c0 | 1283 | methcalls[i].begin = BMSYMBOL_VALUE_ADDRESS (func); |
50e65b17 | 1284 | methcalls[i].end = minimal_symbol_upper_bound (func); |
b81654f1 | 1285 | } |
b81654f1 MS |
1286 | } |
1287 | ||
1288 | /* find_objc_msgcall (replaces pc_off_limits) | |
1289 | * | |
d2e6263c MS |
1290 | * ALL that this function now does is to determine whether the input |
1291 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1292 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1293 | * if so, it returns the address of the method that will be called. | |
1294 | * | |
1295 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1296 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1297 | * returning the address of the shlib function that would be called. |
e76f05fa | 1298 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c | 1299 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
0df8b418 | 1300 | * dependent modules. |
b81654f1 MS |
1301 | */ |
1302 | ||
1303 | struct objc_submethod_helper_data { | |
36e53c63 | 1304 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1305 | CORE_ADDR pc; |
1306 | CORE_ADDR *new_pc; | |
1307 | }; | |
1308 | ||
b9362cc7 | 1309 | static int |
7248f48e | 1310 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1311 | { |
d2e6263c MS |
1312 | struct objc_submethod_helper_data *s = |
1313 | (struct objc_submethod_helper_data *) arg; | |
1314 | ||
1315 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1316 | return 1; |
d2e6263c | 1317 | else |
b81654f1 | 1318 | return 0; |
b81654f1 MS |
1319 | } |
1320 | ||
b9362cc7 | 1321 | static int |
36e53c63 | 1322 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1323 | CORE_ADDR pc, |
1324 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1325 | { |
1326 | struct objc_submethod_helper_data s; | |
1327 | ||
1328 | s.f = f; | |
1329 | s.pc = pc; | |
1330 | s.new_pc = new_pc; | |
1331 | ||
1332 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1333 | (void *) &s, |
0df8b418 MS |
1334 | "Unable to determine target of " |
1335 | "Objective-C method call (ignoring):\n", | |
d2e6263c | 1336 | RETURN_MASK_ALL) == 0) |
b81654f1 | 1337 | return 1; |
d2e6263c | 1338 | else |
b81654f1 | 1339 | return 0; |
b81654f1 MS |
1340 | } |
1341 | ||
1342 | int | |
1343 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1344 | { | |
1345 | unsigned int i; | |
1346 | ||
1347 | find_objc_msgsend (); | |
5e488a7b AC |
1348 | if (new_pc != NULL) |
1349 | { | |
1350 | *new_pc = 0; | |
1351 | } | |
b81654f1 | 1352 | |
d2e6263c MS |
1353 | for (i = 0; i < nmethcalls; i++) |
1354 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1355 | { | |
1356 | if (methcalls[i].stop_at != NULL) | |
1357 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1358 | pc, new_pc); | |
1359 | else | |
1360 | return 0; | |
b81654f1 | 1361 | } |
d2e6263c | 1362 | |
b81654f1 MS |
1363 | return 0; |
1364 | } | |
1365 | ||
0df8b418 MS |
1366 | /* -Wmissing-prototypes */ |
1367 | extern initialize_file_ftype _initialize_objc_language; | |
b9362cc7 | 1368 | |
b81654f1 MS |
1369 | void |
1370 | _initialize_objc_language (void) | |
1371 | { | |
1372 | add_language (&objc_language_defn); | |
d2e6263c | 1373 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1bedd215 | 1374 | _("All Objective-C selectors, or those matching REGEXP.")); |
d2e6263c | 1375 | add_info ("classes", classes_info, /* INFO CLASSES command. */ |
1bedd215 | 1376 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1377 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1378 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1379 | add_com_alias ("po", "print-object", class_vars, 1); |
1380 | } | |
1381 | ||
b81654f1 | 1382 | static void |
e17a4113 UW |
1383 | read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1384 | struct objc_method *method) | |
b81654f1 | 1385 | { |
e17a4113 | 1386 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1387 | |
e17a4113 UW |
1388 | method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order); |
1389 | method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1390 | method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
b81654f1 MS |
1391 | } |
1392 | ||
e17a4113 UW |
1393 | static unsigned long |
1394 | read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr) | |
b81654f1 | 1395 | { |
e17a4113 | 1396 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1397 | |
e17a4113 | 1398 | return read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1399 | } |
1400 | ||
1401 | static void | |
e17a4113 UW |
1402 | read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1403 | unsigned long num, struct objc_method *method) | |
b81654f1 | 1404 | { |
e17a4113 UW |
1405 | gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr)); |
1406 | read_objc_method (gdbarch, addr + 8 + (12 * num), method); | |
b81654f1 MS |
1407 | } |
1408 | ||
1409 | static void | |
e17a4113 UW |
1410 | read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr, |
1411 | struct objc_object *object) | |
b81654f1 | 1412 | { |
e17a4113 | 1413 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1414 | |
e17a4113 | 1415 | object->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
b81654f1 MS |
1416 | } |
1417 | ||
1418 | static void | |
e17a4113 UW |
1419 | read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr, |
1420 | struct objc_super *super) | |
b81654f1 | 1421 | { |
e17a4113 | 1422 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1423 | |
e17a4113 | 1424 | super->receiver = read_memory_unsigned_integer (addr, 4, byte_order); |
fe978cb0 | 1425 | super->theclass = read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1426 | }; |
1427 | ||
1428 | static void | |
e17a4113 | 1429 | read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr, |
fe978cb0 | 1430 | struct objc_class *theclass) |
b81654f1 | 1431 | { |
e17a4113 | 1432 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1433 | |
fe978cb0 PA |
1434 | theclass->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
1435 | theclass->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1436 | theclass->name = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1437 | theclass->version = read_memory_unsigned_integer (addr + 12, 4, byte_order); | |
1438 | theclass->info = read_memory_unsigned_integer (addr + 16, 4, byte_order); | |
1439 | theclass->instance_size = read_memory_unsigned_integer (addr + 18, 4, | |
0df8b418 | 1440 | byte_order); |
fe978cb0 PA |
1441 | theclass->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order); |
1442 | theclass->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order); | |
1443 | theclass->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order); | |
1444 | theclass->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order); | |
b81654f1 MS |
1445 | } |
1446 | ||
b9362cc7 | 1447 | static CORE_ADDR |
e17a4113 | 1448 | find_implementation_from_class (struct gdbarch *gdbarch, |
fe978cb0 | 1449 | CORE_ADDR theclass, CORE_ADDR sel) |
b81654f1 | 1450 | { |
e17a4113 | 1451 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
fe978cb0 | 1452 | CORE_ADDR subclass = theclass; |
b81654f1 | 1453 | |
d2e6263c MS |
1454 | while (subclass != 0) |
1455 | { | |
b81654f1 | 1456 | |
d2e6263c MS |
1457 | struct objc_class class_str; |
1458 | unsigned mlistnum = 0; | |
b81654f1 | 1459 | |
e17a4113 | 1460 | read_objc_class (gdbarch, subclass, &class_str); |
b81654f1 | 1461 | |
d2e6263c MS |
1462 | for (;;) |
1463 | { | |
1464 | CORE_ADDR mlist; | |
1465 | unsigned long nmethods; | |
1466 | unsigned long i; | |
b81654f1 | 1467 | |
d2e6263c | 1468 | mlist = read_memory_unsigned_integer (class_str.methods + |
e17a4113 UW |
1469 | (4 * mlistnum), |
1470 | 4, byte_order); | |
d2e6263c MS |
1471 | if (mlist == 0) |
1472 | break; | |
b81654f1 | 1473 | |
e17a4113 | 1474 | nmethods = read_objc_methlist_nmethods (gdbarch, mlist); |
b81654f1 | 1475 | |
d2e6263c MS |
1476 | for (i = 0; i < nmethods; i++) |
1477 | { | |
1478 | struct objc_method meth_str; | |
b81654f1 | 1479 | |
5cc80db3 | 1480 | read_objc_methlist_method (gdbarch, mlist, i, &meth_str); |
b81654f1 | 1481 | |
d2e6263c | 1482 | if (meth_str.name == sel) |
1abf022c | 1483 | /* FIXME: hppa arch was doing a pointer dereference |
0df8b418 | 1484 | here. There needs to be a better way to do that. */ |
1abf022c | 1485 | return meth_str.imp; |
d2e6263c MS |
1486 | } |
1487 | mlistnum++; | |
b81654f1 | 1488 | } |
d2e6263c | 1489 | subclass = class_str.super_class; |
b81654f1 | 1490 | } |
b81654f1 MS |
1491 | |
1492 | return 0; | |
1493 | } | |
1494 | ||
b9362cc7 | 1495 | static CORE_ADDR |
e17a4113 UW |
1496 | find_implementation (struct gdbarch *gdbarch, |
1497 | CORE_ADDR object, CORE_ADDR sel) | |
b81654f1 MS |
1498 | { |
1499 | struct objc_object ostr; | |
1500 | ||
d2e6263c MS |
1501 | if (object == 0) |
1502 | return 0; | |
e17a4113 | 1503 | read_objc_object (gdbarch, object, &ostr); |
d2e6263c MS |
1504 | if (ostr.isa == 0) |
1505 | return 0; | |
b81654f1 | 1506 | |
e17a4113 | 1507 | return find_implementation_from_class (gdbarch, ostr.isa, sel); |
b81654f1 MS |
1508 | } |
1509 | ||
1510 | static int | |
1511 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1512 | { | |
5ed92fa8 UW |
1513 | struct frame_info *frame = get_current_frame (); |
1514 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1515 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1516 | ||
b81654f1 MS |
1517 | CORE_ADDR object; |
1518 | CORE_ADDR sel; | |
1519 | CORE_ADDR res; | |
1520 | ||
5ed92fa8 UW |
1521 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1522 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1523 | |
e17a4113 | 1524 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1525 | if (new_pc != 0) |
1526 | *new_pc = res; | |
1527 | if (res == 0) | |
1528 | return 1; | |
b81654f1 MS |
1529 | return 0; |
1530 | } | |
1531 | ||
1532 | static int | |
1533 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1534 | { | |
5ed92fa8 UW |
1535 | struct frame_info *frame = get_current_frame (); |
1536 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1537 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1538 | ||
b81654f1 MS |
1539 | CORE_ADDR object; |
1540 | CORE_ADDR sel; | |
1541 | CORE_ADDR res; | |
1542 | ||
5ed92fa8 UW |
1543 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1544 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1545 | |
e17a4113 | 1546 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1547 | if (new_pc != 0) |
1548 | *new_pc = res; | |
1549 | if (res == 0) | |
1550 | return 1; | |
b81654f1 MS |
1551 | return 0; |
1552 | } | |
1553 | ||
1554 | static int | |
1555 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1556 | { | |
5ed92fa8 UW |
1557 | struct frame_info *frame = get_current_frame (); |
1558 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1559 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1560 | ||
b81654f1 MS |
1561 | struct objc_super sstr; |
1562 | ||
1563 | CORE_ADDR super; | |
1564 | CORE_ADDR sel; | |
1565 | CORE_ADDR res; | |
1566 | ||
5ed92fa8 UW |
1567 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1568 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1569 | |
e17a4113 | 1570 | read_objc_super (gdbarch, super, &sstr); |
fe978cb0 | 1571 | if (sstr.theclass == 0) |
d2e6263c | 1572 | return 0; |
b81654f1 | 1573 | |
fe978cb0 | 1574 | res = find_implementation_from_class (gdbarch, sstr.theclass, sel); |
d2e6263c MS |
1575 | if (new_pc != 0) |
1576 | *new_pc = res; | |
1577 | if (res == 0) | |
1578 | return 1; | |
b81654f1 MS |
1579 | return 0; |
1580 | } | |
1581 | ||
1582 | static int | |
1583 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1584 | { | |
5ed92fa8 UW |
1585 | struct frame_info *frame = get_current_frame (); |
1586 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1587 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1588 | ||
b81654f1 MS |
1589 | struct objc_super sstr; |
1590 | ||
1591 | CORE_ADDR super; | |
1592 | CORE_ADDR sel; | |
1593 | CORE_ADDR res; | |
1594 | ||
5ed92fa8 UW |
1595 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1596 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1597 | |
e17a4113 | 1598 | read_objc_super (gdbarch, super, &sstr); |
fe978cb0 | 1599 | if (sstr.theclass == 0) |
d2e6263c | 1600 | return 0; |
b81654f1 | 1601 | |
fe978cb0 | 1602 | res = find_implementation_from_class (gdbarch, sstr.theclass, sel); |
d2e6263c MS |
1603 | if (new_pc != 0) |
1604 | *new_pc = res; | |
1605 | if (res == 0) | |
1606 | return 1; | |
b81654f1 MS |
1607 | return 0; |
1608 | } | |
57a9e6af | 1609 | |
70221824 PA |
1610 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1611 | extern initialize_file_ftype _initialize_objc_lang; | |
1612 | ||
57a9e6af PP |
1613 | void |
1614 | _initialize_objc_lang (void) | |
1615 | { | |
1616 | objc_objfile_data = register_objfile_data (); | |
1617 | } |