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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
61baf725 | 3 | Copyright (C) 2002-2017 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 * | |
a121b7c1 | 84 | lookup_struct_typedef (const 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 | |
a121b7c1 | 109 | lookup_objc_class (struct gdbarch *gdbarch, const 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 | 132 | classval = value_coerce_array (classval); |
7022349d PA |
133 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, |
134 | NULL, | |
b81654f1 MS |
135 | 1, &classval)); |
136 | } | |
137 | ||
c253954e | 138 | CORE_ADDR |
a121b7c1 | 139 | lookup_child_selector (struct gdbarch *gdbarch, const char *selname) |
b81654f1 | 140 | { |
3b7538c0 | 141 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
142 | struct value * function, *selstring; |
143 | ||
144 | if (! target_has_execution) | |
145 | { | |
d2e6263c | 146 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
147 | return 0; |
148 | } | |
149 | ||
3b7344d5 | 150 | if (lookup_minimal_symbol("sel_getUid", 0, 0).minsym) |
3e3b026f | 151 | function = find_function_in_inferior("sel_getUid", NULL); |
3b7344d5 | 152 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0).minsym) |
3e3b026f | 153 | function = find_function_in_inferior("sel_get_any_uid", NULL); |
b81654f1 MS |
154 | else |
155 | { | |
0df8b418 MS |
156 | complaint (&symfile_complaints, |
157 | _("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)); | |
7022349d | 164 | return value_as_long (call_function_by_hand (function, NULL, 1, &selstring)); |
b81654f1 MS |
165 | } |
166 | ||
167 | struct value * | |
3b7538c0 | 168 | value_nsstring (struct gdbarch *gdbarch, 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 | ||
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); |
7022349d PA |
185 | nsstringValue = call_function_by_hand(function, |
186 | NULL, 1, &stringValue[2]); | |
b81654f1 | 187 | } |
3b7344d5 | 188 | else if (lookup_minimal_symbol("istr", 0, 0).minsym) |
b81654f1 | 189 | { |
3b7538c0 | 190 | function = find_function_in_inferior("istr", NULL); |
7022349d | 191 | nsstringValue = call_function_by_hand(function, NULL, 1, &stringValue[2]); |
b81654f1 | 192 | } |
3b7344d5 | 193 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0).minsym) |
b81654f1 | 194 | { |
3e3b026f | 195 | function |
3b7538c0 UW |
196 | = find_function_in_inferior("+[NSString stringWithCString:]", NULL); |
197 | type = builtin_type (gdbarch)->builtin_long; | |
3e3b026f | 198 | |
b81654f1 | 199 | stringValue[0] = value_from_longest |
3b7538c0 | 200 | (type, lookup_objc_class (gdbarch, "NSString")); |
b81654f1 | 201 | stringValue[1] = value_from_longest |
3b7538c0 | 202 | (type, lookup_child_selector (gdbarch, "stringWithCString:")); |
7022349d | 203 | nsstringValue = call_function_by_hand(function, NULL, 3, &stringValue[0]); |
b81654f1 MS |
204 | } |
205 | else | |
8a3fe4f8 | 206 | error (_("NSString: internal error -- no way to create new NSString")); |
b81654f1 | 207 | |
3e3b026f UW |
208 | sym = lookup_struct_typedef("NSString", 0, 1); |
209 | if (sym == NULL) | |
210 | sym = lookup_struct_typedef("NXString", 0, 1); | |
211 | if (sym == NULL) | |
212 | type = builtin_type (gdbarch)->builtin_data_ptr; | |
213 | else | |
214 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
215 | ||
04624583 | 216 | deprecated_set_value_type (nsstringValue, type); |
b81654f1 MS |
217 | return nsstringValue; |
218 | } | |
219 | ||
d2e6263c | 220 | /* Objective-C name demangling. */ |
b81654f1 MS |
221 | |
222 | char * | |
9a3d7dfd | 223 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
224 | { |
225 | char *demangled, *cp; | |
226 | ||
227 | if (mangled[0] == '_' && | |
228 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
229 | mangled[2] == '_') | |
230 | { | |
224c3ddb | 231 | cp = demangled = (char *) xmalloc (strlen (mangled) + 2); |
b81654f1 MS |
232 | |
233 | if (mangled[1] == 'i') | |
234 | *cp++ = '-'; /* for instance method */ | |
235 | else | |
236 | *cp++ = '+'; /* for class method */ | |
237 | ||
238 | *cp++ = '['; /* opening left brace */ | |
0df8b418 | 239 | strcpy(cp, mangled+3); /* Tack on the rest of the mangled name. */ |
b81654f1 MS |
240 | |
241 | while (*cp && *cp == '_') | |
0df8b418 MS |
242 | cp++; /* Skip any initial underbars in class |
243 | name. */ | |
b81654f1 | 244 | |
7248f48e | 245 | cp = strchr(cp, '_'); |
0df8b418 | 246 | if (!cp) /* Find first non-initial underbar. */ |
b81654f1 | 247 | { |
7248f48e | 248 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
249 | return NULL; |
250 | } | |
0df8b418 | 251 | if (cp[1] == '_') /* Easy case: no category name. */ |
5cc80db3 | 252 | { |
0df8b418 | 253 | *cp++ = ' '; /* Replace two '_' with one ' '. */ |
5cc80db3 MS |
254 | strcpy(cp, mangled + (cp - demangled) + 2); |
255 | } | |
256 | else | |
257 | { | |
0df8b418 | 258 | *cp++ = '('; /* Less easy case: category name. */ |
5cc80db3 MS |
259 | cp = strchr(cp, '_'); |
260 | if (!cp) | |
261 | { | |
262 | xfree(demangled); /* not mangled name */ | |
263 | return NULL; | |
264 | } | |
265 | *cp++ = ')'; | |
0df8b418 MS |
266 | *cp++ = ' '; /* Overwriting 1st char of method name... */ |
267 | strcpy(cp, mangled + (cp - demangled)); /* Get it back. */ | |
5cc80db3 | 268 | } |
b81654f1 MS |
269 | |
270 | while (*cp && *cp == '_') | |
0df8b418 MS |
271 | cp++; /* Skip any initial underbars in |
272 | method name. */ | |
b81654f1 MS |
273 | |
274 | for (; *cp; cp++) | |
275 | if (*cp == '_') | |
0df8b418 | 276 | *cp = ':'; /* Replace remaining '_' with ':'. */ |
b81654f1 MS |
277 | |
278 | *cp++ = ']'; /* closing right brace */ | |
279 | *cp++ = 0; /* string terminator */ | |
280 | return demangled; | |
281 | } | |
282 | else | |
d2e6263c | 283 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
284 | } |
285 | ||
8b302db8 TT |
286 | /* la_sniff_from_mangled_name for ObjC. */ |
287 | ||
288 | static int | |
289 | objc_sniff_from_mangled_name (const char *mangled, char **demangled) | |
290 | { | |
291 | *demangled = objc_demangle (mangled, 0); | |
292 | return *demangled != NULL; | |
293 | } | |
294 | ||
f636b87d AF |
295 | /* Determine if we are currently in the Objective-C dispatch function. |
296 | If so, get the address of the method function that the dispatcher | |
0df8b418 | 297 | would call and use that as the function to step into instead. Also |
f636b87d AF |
298 | skip over the trampoline for the function (if any). This is better |
299 | for the user since they are only interested in stepping into the | |
300 | method function anyway. */ | |
301 | static CORE_ADDR | |
52f729a7 | 302 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
f636b87d | 303 | { |
d80b854b | 304 | struct gdbarch *gdbarch = get_frame_arch (frame); |
f636b87d AF |
305 | CORE_ADDR real_stop_pc; |
306 | CORE_ADDR method_stop_pc; | |
307 | ||
d80b854b | 308 | real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc); |
f636b87d AF |
309 | |
310 | if (real_stop_pc != 0) | |
311 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
312 | else | |
313 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
314 | ||
315 | if (method_stop_pc) | |
316 | { | |
e76f05fa | 317 | real_stop_pc = gdbarch_skip_trampoline_code |
d80b854b | 318 | (gdbarch, frame, method_stop_pc); |
f636b87d AF |
319 | if (real_stop_pc == 0) |
320 | real_stop_pc = method_stop_pc; | |
321 | } | |
322 | ||
323 | return real_stop_pc; | |
324 | } | |
325 | ||
b81654f1 MS |
326 | |
327 | /* Table mapping opcodes into strings for printing operators | |
328 | and precedences of the operators. */ | |
329 | ||
330 | static const struct op_print objc_op_print_tab[] = | |
331 | { | |
332 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
333 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
334 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
335 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
336 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
337 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
338 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
339 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
340 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
341 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
342 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
343 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
344 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
345 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
346 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
347 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
348 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
349 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
350 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
351 | {"%", BINOP_REM, PREC_MUL, 0}, | |
352 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
353 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
354 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
355 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
356 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
357 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
358 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
359 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
360 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 361 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
362 | }; |
363 | ||
56618e20 TT |
364 | static const char *objc_extensions[] = |
365 | { | |
366 | ".m", NULL | |
367 | }; | |
368 | ||
47e77640 | 369 | extern const struct language_defn objc_language_defn = { |
d2e6263c | 370 | "objective-c", /* Language name */ |
6abde28f | 371 | "Objective-C", |
b81654f1 | 372 | language_objc, |
b81654f1 | 373 | range_check_off, |
b81654f1 | 374 | case_sensitive_on, |
7ca2d3a3 | 375 | array_row_major, |
9a044a89 | 376 | macro_expansion_c, |
56618e20 | 377 | objc_extensions, |
5f9769d1 | 378 | &exp_descriptor_standard, |
f2e8016f | 379 | c_parse, |
b3f11165 | 380 | c_yyerror, |
e85c3284 | 381 | null_post_parser, |
8a808554 TT |
382 | c_printchar, /* Print a character constant */ |
383 | c_printstr, /* Function to print string constant */ | |
384 | c_emit_char, | |
b81654f1 | 385 | c_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 386 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
b81654f1 MS |
387 | c_val_print, /* Print a value using appropriate syntax */ |
388 | c_value_print, /* Print a top-level value */ | |
a5ee536b | 389 | default_read_var_value, /* la_read_var_value */ |
f636b87d | 390 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
2b2d9e11 | 391 | "self", /* name_of_this */ |
5f9a71c3 | 392 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
b368761e | 393 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 394 | objc_demangle, /* Language specific symbol demangler */ |
8b302db8 | 395 | objc_sniff_from_mangled_name, |
0df8b418 MS |
396 | NULL, /* Language specific |
397 | class_name_from_physname */ | |
d2e6263c MS |
398 | objc_op_print_tab, /* Expression operators for printing */ |
399 | 1, /* C-style arrays */ | |
b81654f1 | 400 | 0, /* String lower bound */ |
6084f43a | 401 | default_word_break_characters, |
eb3ff9a5 | 402 | default_collect_symbol_completion_matches, |
cad351d1 | 403 | c_language_arch_info, |
e79af960 | 404 | default_print_array_index, |
41f1b697 | 405 | default_pass_by_reference, |
ae6a3a4c | 406 | default_get_string, |
43cc5389 | 407 | c_watch_location_expression, |
1a119f36 | 408 | NULL, /* la_get_symbol_name_cmp */ |
f8eba3c6 | 409 | iterate_over_symbols, |
a53b64ea | 410 | &default_varobj_ops, |
bb2ec1b3 TT |
411 | NULL, |
412 | NULL, | |
b81654f1 MS |
413 | LANG_MAGIC |
414 | }; | |
415 | ||
416 | /* | |
417 | * ObjC: | |
0df8b418 | 418 | * Following functions help construct Objective-C message calls. |
b81654f1 MS |
419 | */ |
420 | ||
d2e6263c | 421 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
422 | { |
423 | struct selname *next; | |
424 | char *msglist_sel; | |
425 | int msglist_len; | |
426 | }; | |
427 | ||
428 | static int msglist_len; | |
429 | static struct selname *selname_chain; | |
430 | static char *msglist_sel; | |
431 | ||
432 | void | |
433 | start_msglist(void) | |
434 | { | |
8d749320 | 435 | struct selname *newobj = XNEW (struct selname); |
b81654f1 | 436 | |
fe978cb0 PA |
437 | newobj->next = selname_chain; |
438 | newobj->msglist_len = msglist_len; | |
439 | newobj->msglist_sel = msglist_sel; | |
b81654f1 MS |
440 | msglist_len = 0; |
441 | msglist_sel = (char *)xmalloc(1); | |
442 | *msglist_sel = 0; | |
fe978cb0 | 443 | selname_chain = newobj; |
b81654f1 MS |
444 | } |
445 | ||
446 | void | |
447 | add_msglist(struct stoken *str, int addcolon) | |
448 | { | |
d7561cbb KS |
449 | char *s; |
450 | const char *p; | |
b81654f1 MS |
451 | int len, plen; |
452 | ||
5cc80db3 MS |
453 | if (str == 0) /* Unnamed arg, or... */ |
454 | { | |
455 | if (addcolon == 0) /* variable number of args. */ | |
456 | { | |
457 | msglist_len++; | |
458 | return; | |
459 | } | |
460 | p = ""; | |
461 | plen = 0; | |
462 | } | |
463 | else | |
464 | { | |
465 | p = str->ptr; | |
466 | plen = str->length; | |
b81654f1 | 467 | } |
b81654f1 MS |
468 | len = plen + strlen(msglist_sel) + 2; |
469 | s = (char *)xmalloc(len); | |
470 | strcpy(s, msglist_sel); | |
471 | strncat(s, p, plen); | |
7248f48e | 472 | xfree(msglist_sel); |
b81654f1 | 473 | msglist_sel = s; |
5cc80db3 MS |
474 | if (addcolon) |
475 | { | |
476 | s[len-2] = ':'; | |
477 | s[len-1] = 0; | |
478 | msglist_len++; | |
479 | } | |
480 | else | |
b81654f1 MS |
481 | s[len-2] = '\0'; |
482 | } | |
483 | ||
484 | int | |
410a0ff2 | 485 | end_msglist (struct parser_state *ps) |
b81654f1 | 486 | { |
f86f5ca3 PH |
487 | int val = msglist_len; |
488 | struct selname *sel = selname_chain; | |
489 | char *p = msglist_sel; | |
c253954e | 490 | CORE_ADDR selid; |
b81654f1 MS |
491 | |
492 | selname_chain = sel->next; | |
493 | msglist_len = sel->msglist_len; | |
494 | msglist_sel = sel->msglist_sel; | |
410a0ff2 | 495 | selid = lookup_child_selector (parse_gdbarch (ps), p); |
b81654f1 | 496 | if (!selid) |
8a3fe4f8 | 497 | error (_("Can't find selector \"%s\""), p); |
410a0ff2 | 498 | write_exp_elt_longcst (ps, selid); |
7248f48e | 499 | xfree(p); |
410a0ff2 | 500 | write_exp_elt_longcst (ps, val); /* Number of args */ |
7248f48e | 501 | xfree(sel); |
b81654f1 MS |
502 | |
503 | return val; | |
504 | } | |
505 | ||
506 | /* | |
0d5cff50 | 507 | * Function: specialcmp (const char *a, const char *b) |
b81654f1 MS |
508 | * |
509 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 510 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
511 | */ |
512 | ||
b9362cc7 | 513 | static int |
0d5cff50 | 514 | specialcmp (const char *a, const char *b) |
b81654f1 MS |
515 | { |
516 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
517 | { | |
518 | if (*a != *b) | |
519 | return *a - *b; | |
520 | a++, b++; | |
521 | } | |
522 | if (*a && *a != ' ' && *a != ']') | |
0df8b418 | 523 | return 1; /* a is longer therefore greater. */ |
b81654f1 | 524 | if (*b && *b != ' ' && *b != ']') |
0df8b418 MS |
525 | return -1; /* a is shorter therefore lesser. */ |
526 | return 0; /* a and b are identical. */ | |
b81654f1 MS |
527 | } |
528 | ||
529 | /* | |
36e53c63 | 530 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 531 | * |
d2e6263c MS |
532 | * Comparison function for use with qsort. Arguments are symbols or |
533 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
534 | */ |
535 | ||
536 | static int | |
36e53c63 | 537 | compare_selectors (const void *a, const void *b) |
b81654f1 | 538 | { |
0d5cff50 | 539 | const char *aname, *bname; |
b81654f1 | 540 | |
de5ad195 DC |
541 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
542 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 543 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 544 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 545 | |
7248f48e AF |
546 | aname = strchr(aname, ' '); |
547 | bname = strchr(bname, ' '); | |
548 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 549 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
550 | |
551 | return specialcmp (aname+1, bname+1); | |
552 | } | |
553 | ||
554 | /* | |
555 | * Function: selectors_info (regexp, from_tty) | |
556 | * | |
d2e6263c MS |
557 | * Implements the "Info selectors" command. Takes an optional regexp |
558 | * arg. Lists all objective c selectors that match the regexp. Works | |
559 | * by grepping thru all symbols for objective c methods. Output list | |
560 | * is sorted and uniqued. | |
b81654f1 MS |
561 | */ |
562 | ||
563 | static void | |
11db9430 | 564 | info_selectors_command (char *regexp, int from_tty) |
b81654f1 MS |
565 | { |
566 | struct objfile *objfile; | |
567 | struct minimal_symbol *msymbol; | |
0d5cff50 | 568 | const char *name; |
b81654f1 MS |
569 | char *val; |
570 | int matches = 0; | |
571 | int maxlen = 0; | |
572 | int ix; | |
573 | char myregexp[2048]; | |
574 | char asel[256]; | |
575 | struct symbol **sym_arr; | |
576 | int plusminus = 0; | |
577 | ||
578 | if (regexp == NULL) | |
d2e6263c | 579 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
580 | else |
581 | { | |
d2e6263c MS |
582 | if (*regexp == '+' || *regexp == '-') |
583 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
584 | plusminus = *regexp++; |
585 | while (*regexp == ' ' || *regexp == '\t') | |
586 | regexp++; | |
587 | } | |
588 | if (*regexp == '\0') | |
589 | strcpy(myregexp, ".*]"); | |
590 | else | |
591 | { | |
a9dc8dcc | 592 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 | 593 | if (sizeof (myregexp) < strlen (regexp) + 4) |
20937029 JK |
594 | error (_("Regexp is too long: %s"), regexp); |
595 | strcpy(myregexp, regexp); | |
b81654f1 MS |
596 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ |
597 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
598 | else | |
599 | strcat(myregexp, ".*]"); | |
600 | } | |
601 | } | |
602 | ||
603 | if (regexp != NULL) | |
5e488a7b AC |
604 | { |
605 | val = re_comp (myregexp); | |
606 | if (val != 0) | |
8a3fe4f8 | 607 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 608 | } |
b81654f1 | 609 | |
d2e6263c | 610 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
611 | ALL_MSYMBOLS (objfile, msymbol) |
612 | { | |
613 | QUIT; | |
efd66ac6 | 614 | name = MSYMBOL_NATURAL_NAME (msymbol); |
3e6ef9e4 JB |
615 | if (name |
616 | && (name[0] == '-' || name[0] == '+') | |
617 | && name[1] == '[') /* Got a method name. */ | |
b81654f1 | 618 | { |
d2e6263c | 619 | /* Filter for class/instance methods. */ |
b81654f1 | 620 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
621 | continue; |
622 | /* Find selector part. */ | |
3e6ef9e4 | 623 | name = (char *) strchr (name+2, ' '); |
50412521 MS |
624 | if (name == NULL) |
625 | { | |
626 | complaint (&symfile_complaints, | |
627 | _("Bad method name '%s'"), | |
efd66ac6 | 628 | MSYMBOL_NATURAL_NAME (msymbol)); |
50412521 MS |
629 | continue; |
630 | } | |
b81654f1 MS |
631 | if (regexp == NULL || re_exec(++name) != 0) |
632 | { | |
0d5cff50 DE |
633 | const char *mystart = name; |
634 | const char *myend = strchr (mystart, ']'); | |
b81654f1 MS |
635 | |
636 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 637 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
638 | matches++; |
639 | } | |
640 | } | |
641 | } | |
642 | if (matches) | |
643 | { | |
a3f17187 | 644 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
645 | regexp ? regexp : "*"); |
646 | ||
8d749320 | 647 | sym_arr = XALLOCAVEC (struct symbol *, matches); |
b81654f1 MS |
648 | matches = 0; |
649 | ALL_MSYMBOLS (objfile, msymbol) | |
650 | { | |
651 | QUIT; | |
efd66ac6 | 652 | name = MSYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
653 | if (name && |
654 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 655 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 656 | { |
d2e6263c | 657 | /* Filter for class/instance methods. */ |
b81654f1 | 658 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
659 | continue; |
660 | /* Find selector part. */ | |
661 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
662 | if (regexp == NULL || re_exec(++name) != 0) |
663 | sym_arr[matches++] = (struct symbol *) msymbol; | |
664 | } | |
665 | } | |
666 | ||
667 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
668 | compare_selectors); | |
d2e6263c MS |
669 | /* Prevent compare on first iteration. */ |
670 | asel[0] = 0; | |
671 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
672 | { |
673 | char *p = asel; | |
674 | ||
675 | QUIT; | |
36018d2e | 676 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
677 | name = strchr (name, ' ') + 1; |
678 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 679 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 680 | |
d2e6263c MS |
681 | /* Copy selector part. */ |
682 | while (*name && *name != ']') | |
b81654f1 MS |
683 | *p++ = *name++; |
684 | *p++ = '\0'; | |
d2e6263c MS |
685 | /* Print in columns. */ |
686 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
687 | } |
688 | begin_line(); | |
689 | } | |
690 | else | |
0df8b418 MS |
691 | printf_filtered (_("No selectors matching \"%s\"\n"), |
692 | regexp ? regexp : "*"); | |
b81654f1 MS |
693 | } |
694 | ||
695 | /* | |
36e53c63 | 696 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 697 | * |
d2e6263c MS |
698 | * Comparison function for use with qsort. Arguments are symbols or |
699 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
700 | */ |
701 | ||
702 | static int | |
36e53c63 | 703 | compare_classes (const void *a, const void *b) |
b81654f1 | 704 | { |
0d5cff50 | 705 | const char *aname, *bname; |
b81654f1 | 706 | |
de5ad195 DC |
707 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
708 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 709 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 710 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
711 | |
712 | return specialcmp (aname+1, bname+1); | |
713 | } | |
714 | ||
715 | /* | |
716 | * Function: classes_info(regexp, from_tty) | |
717 | * | |
718 | * Implements the "info classes" command for objective c classes. | |
719 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
720 | * Works by grepping thru the list of objective c methods. List will |
721 | * be sorted and uniqued (since one class may have many methods). | |
722 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
723 | */ |
724 | ||
725 | static void | |
11db9430 | 726 | info_classes_command (char *regexp, int from_tty) |
b81654f1 MS |
727 | { |
728 | struct objfile *objfile; | |
729 | struct minimal_symbol *msymbol; | |
0d5cff50 | 730 | const char *name; |
b81654f1 MS |
731 | char *val; |
732 | int matches = 0; | |
733 | int maxlen = 0; | |
734 | int ix; | |
735 | char myregexp[2048]; | |
736 | char aclass[256]; | |
737 | struct symbol **sym_arr; | |
738 | ||
739 | if (regexp == NULL) | |
d2e6263c | 740 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
741 | else |
742 | { | |
a9dc8dcc | 743 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 MS |
744 | if (sizeof (myregexp) < strlen (regexp) + 4) |
745 | error (_("Regexp is too long: %s"), regexp); | |
b81654f1 MS |
746 | strcpy(myregexp, regexp); |
747 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 748 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
749 | myregexp[strlen(myregexp) - 1] = ' '; |
750 | else | |
751 | strcat(myregexp, ".* "); | |
752 | } | |
753 | ||
754 | if (regexp != NULL) | |
5e488a7b AC |
755 | { |
756 | val = re_comp (myregexp); | |
757 | if (val != 0) | |
8a3fe4f8 | 758 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 759 | } |
b81654f1 | 760 | |
d2e6263c | 761 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
762 | ALL_MSYMBOLS (objfile, msymbol) |
763 | { | |
764 | QUIT; | |
efd66ac6 | 765 | name = MSYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
766 | if (name && |
767 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 768 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
769 | if (regexp == NULL || re_exec(name+2) != 0) |
770 | { | |
d2e6263c | 771 | /* Compute length of classname part. */ |
0d5cff50 DE |
772 | const char *mystart = name + 2; |
773 | const char *myend = strchr (mystart, ' '); | |
b81654f1 MS |
774 | |
775 | if (myend && (myend - mystart > maxlen)) | |
776 | maxlen = myend - mystart; | |
777 | matches++; | |
778 | } | |
779 | } | |
780 | if (matches) | |
781 | { | |
a3f17187 | 782 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 | 783 | regexp ? regexp : "*"); |
8d749320 | 784 | sym_arr = XALLOCAVEC (struct symbol *, matches); |
b81654f1 MS |
785 | matches = 0; |
786 | ALL_MSYMBOLS (objfile, msymbol) | |
787 | { | |
788 | QUIT; | |
efd66ac6 | 789 | name = MSYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
790 | if (name && |
791 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 792 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
793 | if (regexp == NULL || re_exec(name+2) != 0) |
794 | sym_arr[matches++] = (struct symbol *) msymbol; | |
795 | } | |
796 | ||
797 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
798 | compare_classes); | |
d2e6263c MS |
799 | /* Prevent compare on first iteration. */ |
800 | aclass[0] = 0; | |
801 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
802 | { |
803 | char *p = aclass; | |
804 | ||
805 | QUIT; | |
36018d2e | 806 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
807 | name += 2; |
808 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 809 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 810 | |
d2e6263c MS |
811 | /* Copy class part of method name. */ |
812 | while (*name && *name != ' ') | |
b81654f1 MS |
813 | *p++ = *name++; |
814 | *p++ = '\0'; | |
d2e6263c MS |
815 | /* Print in columns. */ |
816 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
817 | } |
818 | begin_line(); | |
819 | } | |
820 | else | |
a3f17187 | 821 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
822 | } |
823 | ||
f8eba3c6 | 824 | static char * |
b81654f1 MS |
825 | parse_selector (char *method, char **selector) |
826 | { | |
827 | char *s1 = NULL; | |
828 | char *s2 = NULL; | |
829 | int found_quote = 0; | |
830 | ||
831 | char *nselector = NULL; | |
832 | ||
e8f3fcdd | 833 | gdb_assert (selector != NULL); |
b81654f1 MS |
834 | |
835 | s1 = method; | |
836 | ||
529480d0 | 837 | s1 = skip_spaces (s1); |
b81654f1 MS |
838 | if (*s1 == '\'') |
839 | { | |
840 | found_quote = 1; | |
841 | s1++; | |
842 | } | |
529480d0 | 843 | s1 = skip_spaces (s1); |
b81654f1 MS |
844 | |
845 | nselector = s1; | |
846 | s2 = s1; | |
847 | ||
5cc80db3 MS |
848 | for (;;) |
849 | { | |
850 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
851 | *s1++ = *s2; | |
852 | else if (isspace (*s2)) | |
853 | ; | |
854 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
855 | break; | |
856 | else | |
857 | return NULL; | |
858 | s2++; | |
859 | } | |
b81654f1 MS |
860 | *s1++ = '\0'; |
861 | ||
529480d0 | 862 | s2 = skip_spaces (s2); |
b81654f1 MS |
863 | if (found_quote) |
864 | { | |
865 | if (*s2 == '\'') | |
866 | s2++; | |
529480d0 | 867 | s2 = skip_spaces (s2); |
b81654f1 MS |
868 | } |
869 | ||
870 | if (selector != NULL) | |
871 | *selector = nselector; | |
872 | ||
873 | return s2; | |
874 | } | |
875 | ||
f8eba3c6 | 876 | static char * |
fe978cb0 | 877 | parse_method (char *method, char *type, char **theclass, |
d2e6263c | 878 | char **category, char **selector) |
b81654f1 MS |
879 | { |
880 | char *s1 = NULL; | |
881 | char *s2 = NULL; | |
882 | int found_quote = 0; | |
883 | ||
884 | char ntype = '\0'; | |
885 | char *nclass = NULL; | |
886 | char *ncategory = NULL; | |
887 | char *nselector = NULL; | |
888 | ||
e8f3fcdd | 889 | gdb_assert (type != NULL); |
fe978cb0 | 890 | gdb_assert (theclass != NULL); |
e8f3fcdd AC |
891 | gdb_assert (category != NULL); |
892 | gdb_assert (selector != NULL); | |
b81654f1 MS |
893 | |
894 | s1 = method; | |
895 | ||
529480d0 | 896 | s1 = skip_spaces (s1); |
b81654f1 MS |
897 | if (*s1 == '\'') |
898 | { | |
899 | found_quote = 1; | |
900 | s1++; | |
901 | } | |
529480d0 | 902 | s1 = skip_spaces (s1); |
b81654f1 MS |
903 | |
904 | if ((s1[0] == '+') || (s1[0] == '-')) | |
905 | ntype = *s1++; | |
906 | ||
529480d0 | 907 | s1 = skip_spaces (s1); |
b81654f1 MS |
908 | |
909 | if (*s1 != '[') | |
910 | return NULL; | |
911 | s1++; | |
912 | ||
913 | nclass = s1; | |
914 | while (isalnum (*s1) || (*s1 == '_')) | |
915 | s1++; | |
916 | ||
917 | s2 = s1; | |
529480d0 | 918 | s2 = skip_spaces (s2); |
b81654f1 MS |
919 | |
920 | if (*s2 == '(') | |
921 | { | |
922 | s2++; | |
529480d0 | 923 | s2 = skip_spaces (s2); |
b81654f1 MS |
924 | ncategory = s2; |
925 | while (isalnum (*s2) || (*s2 == '_')) | |
926 | s2++; | |
927 | *s2++ = '\0'; | |
928 | } | |
929 | ||
d2e6263c | 930 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
931 | *s1++ = '\0'; |
932 | ||
933 | nselector = s2; | |
934 | s1 = s2; | |
935 | ||
5cc80db3 MS |
936 | for (;;) |
937 | { | |
938 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
939 | *s1++ = *s2; | |
940 | else if (isspace (*s2)) | |
941 | ; | |
942 | else if (*s2 == ']') | |
943 | break; | |
944 | else | |
945 | return NULL; | |
946 | s2++; | |
947 | } | |
b81654f1 MS |
948 | *s1++ = '\0'; |
949 | s2++; | |
950 | ||
529480d0 | 951 | s2 = skip_spaces (s2); |
b81654f1 MS |
952 | if (found_quote) |
953 | { | |
954 | if (*s2 != '\'') | |
955 | return NULL; | |
956 | s2++; | |
529480d0 | 957 | s2 = skip_spaces (s2); |
b81654f1 MS |
958 | } |
959 | ||
960 | if (type != NULL) | |
961 | *type = ntype; | |
fe978cb0 PA |
962 | if (theclass != NULL) |
963 | *theclass = nclass; | |
b81654f1 MS |
964 | if (category != NULL) |
965 | *category = ncategory; | |
966 | if (selector != NULL) | |
967 | *selector = nselector; | |
968 | ||
969 | return s2; | |
970 | } | |
971 | ||
2f9a90b4 | 972 | static void |
fe978cb0 | 973 | find_methods (char type, const char *theclass, const char *category, |
f8eba3c6 TT |
974 | const char *selector, |
975 | VEC (const_char_ptr) **symbol_names) | |
b81654f1 MS |
976 | { |
977 | struct objfile *objfile = NULL; | |
b81654f1 | 978 | |
0d5cff50 | 979 | const char *symname = NULL; |
b81654f1 MS |
980 | |
981 | char ntype = '\0'; | |
982 | char *nclass = NULL; | |
983 | char *ncategory = NULL; | |
984 | char *nselector = NULL; | |
985 | ||
b81654f1 MS |
986 | static char *tmp = NULL; |
987 | static unsigned int tmplen = 0; | |
988 | ||
f8eba3c6 | 989 | gdb_assert (symbol_names != NULL); |
b81654f1 | 990 | |
57a9e6af | 991 | ALL_OBJFILES (objfile) |
b81654f1 | 992 | { |
57a9e6af | 993 | unsigned int *objc_csym; |
f8eba3c6 | 994 | struct minimal_symbol *msymbol = NULL; |
b81654f1 | 995 | |
57a9e6af PP |
996 | /* The objfile_csym variable counts the number of ObjC methods |
997 | that this objfile defines. We save that count as a private | |
998 | objfile data. If we have already determined that this objfile | |
999 | provides no ObjC methods, we can skip it entirely. */ | |
b81654f1 | 1000 | |
57a9e6af | 1001 | unsigned int objfile_csym = 0; |
b81654f1 | 1002 | |
19ba03f4 | 1003 | objc_csym = (unsigned int *) objfile_data (objfile, objc_objfile_data); |
57a9e6af PP |
1004 | if (objc_csym != NULL && *objc_csym == 0) |
1005 | /* There are no ObjC symbols in this objfile. Skip it entirely. */ | |
b81654f1 MS |
1006 | continue; |
1007 | ||
57a9e6af | 1008 | ALL_OBJFILE_MSYMBOLS (objfile, msymbol) |
b81654f1 | 1009 | { |
57a9e6af | 1010 | QUIT; |
b81654f1 | 1011 | |
0c4b2e63 MF |
1012 | /* Check the symbol name first as this can be done entirely without |
1013 | sending any query to the target. */ | |
efd66ac6 | 1014 | symname = MSYMBOL_NATURAL_NAME (msymbol); |
0c4b2e63 MF |
1015 | if (symname == NULL) |
1016 | continue; | |
1017 | ||
1018 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1019 | /* Not a method name. */ | |
1020 | continue; | |
1021 | ||
8dfd1e6d KS |
1022 | objfile_csym++; |
1023 | ||
0c4b2e63 | 1024 | /* Now that thinks are a bit sane, clean up the symname. */ |
57a9e6af PP |
1025 | while ((strlen (symname) + 1) >= tmplen) |
1026 | { | |
1027 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
224c3ddb | 1028 | tmp = (char *) xrealloc (tmp, tmplen); |
57a9e6af PP |
1029 | } |
1030 | strcpy (tmp, symname); | |
b81654f1 | 1031 | |
0df8b418 MS |
1032 | if (parse_method (tmp, &ntype, &nclass, |
1033 | &ncategory, &nselector) == NULL) | |
57a9e6af | 1034 | continue; |
b81654f1 | 1035 | |
57a9e6af PP |
1036 | if ((type != '\0') && (ntype != type)) |
1037 | continue; | |
b81654f1 | 1038 | |
fe978cb0 PA |
1039 | if ((theclass != NULL) |
1040 | && ((nclass == NULL) || (strcmp (theclass, nclass) != 0))) | |
57a9e6af PP |
1041 | continue; |
1042 | ||
1043 | if ((category != NULL) && | |
1044 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1045 | continue; | |
b81654f1 | 1046 | |
57a9e6af PP |
1047 | if ((selector != NULL) && |
1048 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1049 | continue; | |
1050 | ||
f8eba3c6 | 1051 | VEC_safe_push (const_char_ptr, *symbol_names, symname); |
57a9e6af | 1052 | } |
f8eba3c6 | 1053 | |
57a9e6af | 1054 | if (objc_csym == NULL) |
b81654f1 | 1055 | { |
8d749320 | 1056 | objc_csym = XOBNEW (&objfile->objfile_obstack, unsigned int); |
57a9e6af PP |
1057 | *objc_csym = objfile_csym; |
1058 | set_objfile_data (objfile, objc_objfile_data, objc_csym); | |
b81654f1 | 1059 | } |
57a9e6af PP |
1060 | else |
1061 | /* Count of ObjC methods in this objfile should be constant. */ | |
1062 | gdb_assert (*objc_csym == objfile_csym); | |
b81654f1 | 1063 | } |
f8eba3c6 | 1064 | } |
b81654f1 | 1065 | |
f8eba3c6 TT |
1066 | /* Uniquify a VEC of strings. */ |
1067 | ||
1068 | static void | |
1069 | uniquify_strings (VEC (const_char_ptr) **strings) | |
1070 | { | |
1071 | int ix; | |
1072 | const char *elem, *last = NULL; | |
1073 | int out; | |
1074 | ||
ee7615e1 AA |
1075 | /* If the vector is empty, there's nothing to do. This explicit |
1076 | check is needed to avoid invoking qsort with NULL. */ | |
1077 | if (VEC_empty (const_char_ptr, *strings)) | |
1078 | return; | |
1079 | ||
f8eba3c6 TT |
1080 | qsort (VEC_address (const_char_ptr, *strings), |
1081 | VEC_length (const_char_ptr, *strings), | |
1082 | sizeof (const_char_ptr), | |
1083 | compare_strings); | |
1084 | out = 0; | |
1085 | for (ix = 0; VEC_iterate (const_char_ptr, *strings, ix, elem); ++ix) | |
1086 | { | |
1087 | if (last == NULL || strcmp (last, elem) != 0) | |
1088 | { | |
1089 | /* Keep ELEM. */ | |
1090 | VEC_replace (const_char_ptr, *strings, out, elem); | |
1091 | ++out; | |
1092 | } | |
1093 | last = elem; | |
1094 | } | |
1095 | VEC_truncate (const_char_ptr, *strings, out); | |
b81654f1 MS |
1096 | } |
1097 | ||
f8eba3c6 | 1098 | /* |
d7561cbb | 1099 | * Function: find_imps (const char *selector, struct symbol **sym_arr) |
f8eba3c6 TT |
1100 | * |
1101 | * Input: a string representing a selector | |
1102 | * a pointer to an array of symbol pointers | |
1103 | * possibly a pointer to a symbol found by the caller. | |
1104 | * | |
1105 | * Output: number of methods that implement that selector. Side | |
1106 | * effects: The array of symbol pointers is filled with matching syms. | |
1107 | * | |
1108 | * By analogy with function "find_methods" (symtab.c), builds a list | |
1109 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1110 | * (symtab.c) can list them and ask the user to choose one or more. | |
1111 | * In this case the matches are objective c methods | |
1112 | * ("implementations") matching an objective c selector. | |
1113 | * | |
1114 | * Note that it is possible for a normal (c-style) function to have | |
1115 | * the same name as an objective c selector. To prevent the selector | |
1116 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1117 | * search for such a function first, and if it finds one, pass it in | |
1118 | * to us. We will then integrate it into the list. We also search | |
1119 | * for one here, among the minsyms. | |
1120 | * | |
1121 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided | |
1122 | * into two parts: debuggable (struct symbol) syms, and | |
1123 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1124 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1125 | * be the index of the first non-debuggable one). | |
1126 | */ | |
1127 | ||
d7561cbb KS |
1128 | const char * |
1129 | find_imps (const char *method, VEC (const_char_ptr) **symbol_names) | |
b81654f1 MS |
1130 | { |
1131 | char type = '\0'; | |
fe978cb0 | 1132 | char *theclass = NULL; |
b81654f1 MS |
1133 | char *category = NULL; |
1134 | char *selector = NULL; | |
1135 | ||
b81654f1 MS |
1136 | char *buf = NULL; |
1137 | char *tmp = NULL; | |
1138 | ||
f8eba3c6 | 1139 | int selector_case = 0; |
b81654f1 | 1140 | |
f8eba3c6 | 1141 | gdb_assert (symbol_names != NULL); |
b81654f1 MS |
1142 | |
1143 | buf = (char *) alloca (strlen (method) + 1); | |
1144 | strcpy (buf, method); | |
fe978cb0 | 1145 | tmp = parse_method (buf, &type, &theclass, &category, &selector); |
b81654f1 | 1146 | |
5cc80db3 MS |
1147 | if (tmp == NULL) |
1148 | { | |
5cc80db3 MS |
1149 | strcpy (buf, method); |
1150 | tmp = parse_selector (buf, &selector); | |
b81654f1 | 1151 | |
5cc80db3 MS |
1152 | if (tmp == NULL) |
1153 | return NULL; | |
1154 | ||
f8eba3c6 | 1155 | selector_case = 1; |
5cc80db3 | 1156 | } |
b81654f1 | 1157 | |
fe978cb0 | 1158 | find_methods (type, theclass, category, selector, symbol_names); |
b81654f1 | 1159 | |
f8eba3c6 TT |
1160 | /* If we hit the "selector" case, and we found some methods, then |
1161 | add the selector itself as a symbol, if it exists. */ | |
1162 | if (selector_case && !VEC_empty (const_char_ptr, *symbol_names)) | |
b81654f1 | 1163 | { |
d12307c1 PMR |
1164 | struct symbol *sym = lookup_symbol (selector, NULL, VAR_DOMAIN, |
1165 | 0).symbol; | |
f8eba3c6 TT |
1166 | |
1167 | if (sym != NULL) | |
1168 | VEC_safe_push (const_char_ptr, *symbol_names, | |
1169 | SYMBOL_NATURAL_NAME (sym)); | |
1170 | else | |
b81654f1 | 1171 | { |
3b7344d5 TT |
1172 | struct bound_minimal_symbol msym |
1173 | = lookup_minimal_symbol (selector, 0, 0); | |
f8eba3c6 | 1174 | |
3b7344d5 | 1175 | if (msym.minsym != NULL) |
f8eba3c6 | 1176 | VEC_safe_push (const_char_ptr, *symbol_names, |
3b7344d5 | 1177 | MSYMBOL_NATURAL_NAME (msym.minsym)); |
b81654f1 MS |
1178 | } |
1179 | } | |
1180 | ||
f8eba3c6 | 1181 | uniquify_strings (symbol_names); |
b81654f1 MS |
1182 | |
1183 | return method + (tmp - buf); | |
1184 | } | |
1185 | ||
b9362cc7 | 1186 | static void |
b81654f1 MS |
1187 | print_object_command (char *args, int from_tty) |
1188 | { | |
1189 | struct value *object, *function, *description; | |
36e53c63 | 1190 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1191 | int i = 0; |
22a44745 | 1192 | gdb_byte c = 0; |
b81654f1 MS |
1193 | |
1194 | if (!args || !*args) | |
d2e6263c MS |
1195 | error ( |
1196 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1197 | |
1198 | { | |
4d01a485 | 1199 | expression_up expr = parse_expression (args); |
b81654f1 MS |
1200 | int pc = 0; |
1201 | ||
4b27a620 | 1202 | object = evaluate_subexp (builtin_type (expr->gdbarch)->builtin_data_ptr, |
4d01a485 | 1203 | expr.get (), &pc, EVAL_NORMAL); |
b81654f1 MS |
1204 | } |
1205 | ||
36e53c63 AF |
1206 | /* Validate the address for sanity. */ |
1207 | object_addr = value_as_long (object); | |
1208 | read_memory (object_addr, &c, 1); | |
1209 | ||
3e3b026f | 1210 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); |
36e53c63 | 1211 | if (function == NULL) |
8a3fe4f8 | 1212 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 | 1213 | |
7022349d | 1214 | description = call_function_by_hand (function, NULL, 1, &object); |
b81654f1 | 1215 | |
7248f48e AF |
1216 | string_addr = value_as_long (description); |
1217 | if (string_addr == 0) | |
8a3fe4f8 | 1218 | error (_("object returns null description")); |
b81654f1 MS |
1219 | |
1220 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1221 | if (c != 0) |
b81654f1 | 1222 | do |
d2e6263c | 1223 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1224 | QUIT; |
1225 | printf_filtered ("%c", c); | |
1226 | read_memory (string_addr + i++, &c, 1); | |
1227 | } while (c != 0); | |
1228 | else | |
a3f17187 | 1229 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1230 | printf_filtered ("\n"); |
1231 | } | |
1232 | ||
d2e6263c MS |
1233 | /* The data structure 'methcalls' is used to detect method calls (thru |
1234 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
0df8b418 | 1235 | * and ultimately find the method being called. |
b81654f1 MS |
1236 | */ |
1237 | ||
1238 | struct objc_methcall { | |
a121b7c1 | 1239 | const char *name; |
d2e6263c | 1240 | /* Return instance method to be called. */ |
36e53c63 | 1241 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1242 | /* Start of pc range corresponding to method invocation. */ |
1243 | CORE_ADDR begin; | |
1244 | /* End of pc range corresponding to method invocation. */ | |
1245 | CORE_ADDR end; | |
b81654f1 MS |
1246 | }; |
1247 | ||
d2e6263c MS |
1248 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1249 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1250 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1251 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1252 | |
1253 | static struct objc_methcall methcalls[] = { | |
1254 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1255 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1256 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1257 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1258 | { "_objc_getClass", NULL, 0, 0}, | |
1259 | { "_objc_getMetaClass", NULL, 0, 0} | |
1260 | }; | |
1261 | ||
1262 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1263 | ||
d2e6263c MS |
1264 | /* The following function, "find_objc_msgsend", fills in the data |
1265 | * structure "objc_msgs" by finding the addresses of each of the | |
1266 | * (currently four) functions that it holds (of which objc_msgSend is | |
1267 | * the first). This must be called each time symbols are loaded, in | |
0df8b418 | 1268 | * case the functions have moved for some reason. |
b81654f1 MS |
1269 | */ |
1270 | ||
b9362cc7 | 1271 | static void |
b81654f1 MS |
1272 | find_objc_msgsend (void) |
1273 | { | |
1274 | unsigned int i; | |
b81654f1 | 1275 | |
5cc80db3 MS |
1276 | for (i = 0; i < nmethcalls; i++) |
1277 | { | |
50e65b17 | 1278 | struct bound_minimal_symbol func; |
b81654f1 | 1279 | |
5cc80db3 | 1280 | /* Try both with and without underscore. */ |
50e65b17 TT |
1281 | func = lookup_bound_minimal_symbol (methcalls[i].name); |
1282 | if ((func.minsym == NULL) && (methcalls[i].name[0] == '_')) | |
5cc80db3 | 1283 | { |
50e65b17 | 1284 | func = lookup_bound_minimal_symbol (methcalls[i].name + 1); |
5cc80db3 | 1285 | } |
50e65b17 | 1286 | if (func.minsym == NULL) |
5cc80db3 MS |
1287 | { |
1288 | methcalls[i].begin = 0; | |
1289 | methcalls[i].end = 0; | |
1290 | continue; | |
1291 | } | |
1292 | ||
77e371c0 | 1293 | methcalls[i].begin = BMSYMBOL_VALUE_ADDRESS (func); |
50e65b17 | 1294 | methcalls[i].end = minimal_symbol_upper_bound (func); |
b81654f1 | 1295 | } |
b81654f1 MS |
1296 | } |
1297 | ||
1298 | /* find_objc_msgcall (replaces pc_off_limits) | |
1299 | * | |
d2e6263c MS |
1300 | * ALL that this function now does is to determine whether the input |
1301 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1302 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1303 | * if so, it returns the address of the method that will be called. | |
1304 | * | |
1305 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1306 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1307 | * returning the address of the shlib function that would be called. |
e76f05fa | 1308 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c | 1309 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
0df8b418 | 1310 | * dependent modules. |
b81654f1 MS |
1311 | */ |
1312 | ||
1313 | struct objc_submethod_helper_data { | |
36e53c63 | 1314 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1315 | CORE_ADDR pc; |
1316 | CORE_ADDR *new_pc; | |
1317 | }; | |
1318 | ||
b9362cc7 | 1319 | static int |
7248f48e | 1320 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1321 | { |
d2e6263c MS |
1322 | struct objc_submethod_helper_data *s = |
1323 | (struct objc_submethod_helper_data *) arg; | |
1324 | ||
1325 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1326 | return 1; |
d2e6263c | 1327 | else |
b81654f1 | 1328 | return 0; |
b81654f1 MS |
1329 | } |
1330 | ||
b9362cc7 | 1331 | static int |
36e53c63 | 1332 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1333 | CORE_ADDR pc, |
1334 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1335 | { |
1336 | struct objc_submethod_helper_data s; | |
1337 | ||
1338 | s.f = f; | |
1339 | s.pc = pc; | |
1340 | s.new_pc = new_pc; | |
1341 | ||
1342 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1343 | (void *) &s, |
0df8b418 MS |
1344 | "Unable to determine target of " |
1345 | "Objective-C method call (ignoring):\n", | |
d2e6263c | 1346 | RETURN_MASK_ALL) == 0) |
b81654f1 | 1347 | return 1; |
d2e6263c | 1348 | else |
b81654f1 | 1349 | return 0; |
b81654f1 MS |
1350 | } |
1351 | ||
1352 | int | |
1353 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1354 | { | |
1355 | unsigned int i; | |
1356 | ||
1357 | find_objc_msgsend (); | |
5e488a7b AC |
1358 | if (new_pc != NULL) |
1359 | { | |
1360 | *new_pc = 0; | |
1361 | } | |
b81654f1 | 1362 | |
d2e6263c MS |
1363 | for (i = 0; i < nmethcalls; i++) |
1364 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1365 | { | |
1366 | if (methcalls[i].stop_at != NULL) | |
1367 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1368 | pc, new_pc); | |
1369 | else | |
1370 | return 0; | |
b81654f1 | 1371 | } |
d2e6263c | 1372 | |
b81654f1 MS |
1373 | return 0; |
1374 | } | |
1375 | ||
0df8b418 MS |
1376 | /* -Wmissing-prototypes */ |
1377 | extern initialize_file_ftype _initialize_objc_language; | |
b9362cc7 | 1378 | |
b81654f1 MS |
1379 | void |
1380 | _initialize_objc_language (void) | |
1381 | { | |
11db9430 | 1382 | add_info ("selectors", info_selectors_command, |
1bedd215 | 1383 | _("All Objective-C selectors, or those matching REGEXP.")); |
11db9430 | 1384 | add_info ("classes", info_classes_command, |
1bedd215 | 1385 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1386 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1387 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1388 | add_com_alias ("po", "print-object", class_vars, 1); |
1389 | } | |
1390 | ||
b81654f1 | 1391 | static void |
e17a4113 UW |
1392 | read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1393 | struct objc_method *method) | |
b81654f1 | 1394 | { |
e17a4113 | 1395 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1396 | |
e17a4113 UW |
1397 | method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order); |
1398 | method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1399 | method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
b81654f1 MS |
1400 | } |
1401 | ||
e17a4113 UW |
1402 | static unsigned long |
1403 | read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr) | |
b81654f1 | 1404 | { |
e17a4113 | 1405 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1406 | |
e17a4113 | 1407 | return read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1408 | } |
1409 | ||
1410 | static void | |
e17a4113 UW |
1411 | read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1412 | unsigned long num, struct objc_method *method) | |
b81654f1 | 1413 | { |
e17a4113 UW |
1414 | gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr)); |
1415 | read_objc_method (gdbarch, addr + 8 + (12 * num), method); | |
b81654f1 MS |
1416 | } |
1417 | ||
1418 | static void | |
e17a4113 UW |
1419 | read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr, |
1420 | struct objc_object *object) | |
b81654f1 | 1421 | { |
e17a4113 | 1422 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1423 | |
e17a4113 | 1424 | object->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
b81654f1 MS |
1425 | } |
1426 | ||
1427 | static void | |
e17a4113 UW |
1428 | read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr, |
1429 | struct objc_super *super) | |
b81654f1 | 1430 | { |
e17a4113 | 1431 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1432 | |
e17a4113 | 1433 | super->receiver = read_memory_unsigned_integer (addr, 4, byte_order); |
fe978cb0 | 1434 | super->theclass = read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1435 | }; |
1436 | ||
1437 | static void | |
e17a4113 | 1438 | read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr, |
fe978cb0 | 1439 | struct objc_class *theclass) |
b81654f1 | 1440 | { |
e17a4113 | 1441 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1442 | |
fe978cb0 PA |
1443 | theclass->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
1444 | theclass->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1445 | theclass->name = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1446 | theclass->version = read_memory_unsigned_integer (addr + 12, 4, byte_order); | |
1447 | theclass->info = read_memory_unsigned_integer (addr + 16, 4, byte_order); | |
1448 | theclass->instance_size = read_memory_unsigned_integer (addr + 18, 4, | |
0df8b418 | 1449 | byte_order); |
fe978cb0 PA |
1450 | theclass->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order); |
1451 | theclass->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order); | |
1452 | theclass->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order); | |
1453 | theclass->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order); | |
b81654f1 MS |
1454 | } |
1455 | ||
b9362cc7 | 1456 | static CORE_ADDR |
e17a4113 | 1457 | find_implementation_from_class (struct gdbarch *gdbarch, |
fe978cb0 | 1458 | CORE_ADDR theclass, CORE_ADDR sel) |
b81654f1 | 1459 | { |
e17a4113 | 1460 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
fe978cb0 | 1461 | CORE_ADDR subclass = theclass; |
b81654f1 | 1462 | |
d2e6263c MS |
1463 | while (subclass != 0) |
1464 | { | |
b81654f1 | 1465 | |
d2e6263c MS |
1466 | struct objc_class class_str; |
1467 | unsigned mlistnum = 0; | |
b81654f1 | 1468 | |
e17a4113 | 1469 | read_objc_class (gdbarch, subclass, &class_str); |
b81654f1 | 1470 | |
d2e6263c MS |
1471 | for (;;) |
1472 | { | |
1473 | CORE_ADDR mlist; | |
1474 | unsigned long nmethods; | |
1475 | unsigned long i; | |
b81654f1 | 1476 | |
d2e6263c | 1477 | mlist = read_memory_unsigned_integer (class_str.methods + |
e17a4113 UW |
1478 | (4 * mlistnum), |
1479 | 4, byte_order); | |
d2e6263c MS |
1480 | if (mlist == 0) |
1481 | break; | |
b81654f1 | 1482 | |
e17a4113 | 1483 | nmethods = read_objc_methlist_nmethods (gdbarch, mlist); |
b81654f1 | 1484 | |
d2e6263c MS |
1485 | for (i = 0; i < nmethods; i++) |
1486 | { | |
1487 | struct objc_method meth_str; | |
b81654f1 | 1488 | |
5cc80db3 | 1489 | read_objc_methlist_method (gdbarch, mlist, i, &meth_str); |
b81654f1 | 1490 | |
d2e6263c | 1491 | if (meth_str.name == sel) |
1abf022c | 1492 | /* FIXME: hppa arch was doing a pointer dereference |
0df8b418 | 1493 | here. There needs to be a better way to do that. */ |
1abf022c | 1494 | return meth_str.imp; |
d2e6263c MS |
1495 | } |
1496 | mlistnum++; | |
b81654f1 | 1497 | } |
d2e6263c | 1498 | subclass = class_str.super_class; |
b81654f1 | 1499 | } |
b81654f1 MS |
1500 | |
1501 | return 0; | |
1502 | } | |
1503 | ||
b9362cc7 | 1504 | static CORE_ADDR |
e17a4113 UW |
1505 | find_implementation (struct gdbarch *gdbarch, |
1506 | CORE_ADDR object, CORE_ADDR sel) | |
b81654f1 MS |
1507 | { |
1508 | struct objc_object ostr; | |
1509 | ||
d2e6263c MS |
1510 | if (object == 0) |
1511 | return 0; | |
e17a4113 | 1512 | read_objc_object (gdbarch, object, &ostr); |
d2e6263c MS |
1513 | if (ostr.isa == 0) |
1514 | return 0; | |
b81654f1 | 1515 | |
e17a4113 | 1516 | return find_implementation_from_class (gdbarch, ostr.isa, sel); |
b81654f1 MS |
1517 | } |
1518 | ||
1519 | static int | |
1520 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1521 | { | |
5ed92fa8 UW |
1522 | struct frame_info *frame = get_current_frame (); |
1523 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1524 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1525 | ||
b81654f1 MS |
1526 | CORE_ADDR object; |
1527 | CORE_ADDR sel; | |
1528 | CORE_ADDR res; | |
1529 | ||
5ed92fa8 UW |
1530 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1531 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1532 | |
e17a4113 | 1533 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1534 | if (new_pc != 0) |
1535 | *new_pc = res; | |
1536 | if (res == 0) | |
1537 | return 1; | |
b81654f1 MS |
1538 | return 0; |
1539 | } | |
1540 | ||
1541 | static int | |
1542 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1543 | { | |
5ed92fa8 UW |
1544 | struct frame_info *frame = get_current_frame (); |
1545 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1546 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1547 | ||
b81654f1 MS |
1548 | CORE_ADDR object; |
1549 | CORE_ADDR sel; | |
1550 | CORE_ADDR res; | |
1551 | ||
5ed92fa8 UW |
1552 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1553 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1554 | |
e17a4113 | 1555 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1556 | if (new_pc != 0) |
1557 | *new_pc = res; | |
1558 | if (res == 0) | |
1559 | return 1; | |
b81654f1 MS |
1560 | return 0; |
1561 | } | |
1562 | ||
1563 | static int | |
1564 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1565 | { | |
5ed92fa8 UW |
1566 | struct frame_info *frame = get_current_frame (); |
1567 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1568 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1569 | ||
b81654f1 MS |
1570 | struct objc_super sstr; |
1571 | ||
1572 | CORE_ADDR super; | |
1573 | CORE_ADDR sel; | |
1574 | CORE_ADDR res; | |
1575 | ||
5ed92fa8 UW |
1576 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1577 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1578 | |
e17a4113 | 1579 | read_objc_super (gdbarch, super, &sstr); |
fe978cb0 | 1580 | if (sstr.theclass == 0) |
d2e6263c | 1581 | return 0; |
b81654f1 | 1582 | |
fe978cb0 | 1583 | res = find_implementation_from_class (gdbarch, sstr.theclass, sel); |
d2e6263c MS |
1584 | if (new_pc != 0) |
1585 | *new_pc = res; | |
1586 | if (res == 0) | |
1587 | return 1; | |
b81654f1 MS |
1588 | return 0; |
1589 | } | |
1590 | ||
1591 | static int | |
1592 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1593 | { | |
5ed92fa8 UW |
1594 | struct frame_info *frame = get_current_frame (); |
1595 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1596 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1597 | ||
b81654f1 MS |
1598 | struct objc_super sstr; |
1599 | ||
1600 | CORE_ADDR super; | |
1601 | CORE_ADDR sel; | |
1602 | CORE_ADDR res; | |
1603 | ||
5ed92fa8 UW |
1604 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1605 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1606 | |
e17a4113 | 1607 | read_objc_super (gdbarch, super, &sstr); |
fe978cb0 | 1608 | if (sstr.theclass == 0) |
d2e6263c | 1609 | return 0; |
b81654f1 | 1610 | |
fe978cb0 | 1611 | res = find_implementation_from_class (gdbarch, sstr.theclass, sel); |
d2e6263c MS |
1612 | if (new_pc != 0) |
1613 | *new_pc = res; | |
1614 | if (res == 0) | |
1615 | return 1; | |
b81654f1 MS |
1616 | return 0; |
1617 | } | |
57a9e6af | 1618 | |
70221824 PA |
1619 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1620 | extern initialize_file_ftype _initialize_objc_lang; | |
1621 | ||
57a9e6af PP |
1622 | void |
1623 | _initialize_objc_lang (void) | |
1624 | { | |
1625 | objc_objfile_data = register_objfile_data (); | |
1626 | } |