Commit | Line | Data |
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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
0b302171 | 3 | Copyright (C) 2002-2005, 2007-2012 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" | |
d2e6263c | 29 | #include "c-lang.h" |
b81654f1 | 30 | #include "objc-lang.h" |
60250e8b | 31 | #include "exceptions.h" |
b81654f1 MS |
32 | #include "complaints.h" |
33 | #include "value.h" | |
34 | #include "symfile.h" | |
35 | #include "objfiles.h" | |
7248f48e | 36 | #include "gdb_string.h" /* for strchr */ |
b81654f1 MS |
37 | #include "target.h" /* for target_has_execution */ |
38 | #include "gdbcore.h" | |
39 | #include "gdbcmd.h" | |
40 | #include "frame.h" | |
41 | #include "gdb_regex.h" | |
42 | #include "regcache.h" | |
fe898f56 | 43 | #include "block.h" |
04714b91 | 44 | #include "infcall.h" |
4e45ca2e | 45 | #include "valprint.h" |
e8f3fcdd | 46 | #include "gdb_assert.h" |
b81654f1 MS |
47 | |
48 | #include <ctype.h> | |
49 | ||
50 | struct objc_object { | |
51 | CORE_ADDR isa; | |
52 | }; | |
53 | ||
54 | struct objc_class { | |
55 | CORE_ADDR isa; | |
56 | CORE_ADDR super_class; | |
57 | CORE_ADDR name; | |
58 | long version; | |
59 | long info; | |
60 | long instance_size; | |
61 | CORE_ADDR ivars; | |
62 | CORE_ADDR methods; | |
63 | CORE_ADDR cache; | |
64 | CORE_ADDR protocols; | |
65 | }; | |
66 | ||
67 | struct objc_super { | |
68 | CORE_ADDR receiver; | |
69 | CORE_ADDR class; | |
70 | }; | |
71 | ||
72 | struct objc_method { | |
73 | CORE_ADDR name; | |
74 | CORE_ADDR types; | |
75 | CORE_ADDR imp; | |
76 | }; | |
77 | ||
57a9e6af PP |
78 | static const struct objfile_data *objc_objfile_data; |
79 | ||
d2e6263c MS |
80 | /* Lookup a structure type named "struct NAME", visible in lexical |
81 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
82 | suitably defined. */ | |
b81654f1 MS |
83 | |
84 | struct symbol * | |
85 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
86 | { | |
f86f5ca3 | 87 | struct symbol *sym; |
b81654f1 | 88 | |
2570f2b7 | 89 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
b81654f1 MS |
90 | |
91 | if (sym == NULL) | |
92 | { | |
93 | if (noerr) | |
94 | return 0; | |
95 | else | |
8a3fe4f8 | 96 | error (_("No struct type named %s."), name); |
b81654f1 MS |
97 | } |
98 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
99 | { | |
100 | if (noerr) | |
101 | return 0; | |
102 | else | |
8a3fe4f8 | 103 | error (_("This context has class, union or enum %s, not a struct."), |
d2e6263c | 104 | name); |
b81654f1 MS |
105 | } |
106 | return sym; | |
107 | } | |
108 | ||
109 | CORE_ADDR | |
3b7538c0 | 110 | lookup_objc_class (struct gdbarch *gdbarch, char *classname) |
b81654f1 | 111 | { |
3b7538c0 | 112 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
113 | struct value * function, *classval; |
114 | ||
115 | if (! target_has_execution) | |
116 | { | |
d2e6263c | 117 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
118 | return 0; |
119 | } | |
120 | ||
121 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
3e3b026f | 122 | function = find_function_in_inferior("objc_lookUpClass", NULL); |
b81654f1 | 123 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) |
3e3b026f | 124 | function = find_function_in_inferior("objc_lookup_class", NULL); |
b81654f1 MS |
125 | else |
126 | { | |
0df8b418 MS |
127 | complaint (&symfile_complaints, |
128 | _("no way to lookup Objective-C classes")); | |
b81654f1 MS |
129 | return 0; |
130 | } | |
131 | ||
3b7538c0 | 132 | classval = value_string (classname, strlen (classname) + 1, char_type); |
b81654f1 MS |
133 | classval = value_coerce_array (classval); |
134 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
135 | 1, &classval)); | |
136 | } | |
137 | ||
c253954e | 138 | CORE_ADDR |
3b7538c0 | 139 | lookup_child_selector (struct gdbarch *gdbarch, 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 | ||
150 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
3e3b026f | 151 | function = find_function_in_inferior("sel_getUid", NULL); |
b81654f1 | 152 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) |
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)); | |
b81654f1 MS |
164 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
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. */ |
b81654f1 MS |
182 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
183 | { | |
3b7538c0 | 184 | function = find_function_in_inferior("_NSNewStringFromCString", NULL); |
b81654f1 MS |
185 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
186 | } | |
187 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
188 | { | |
3b7538c0 | 189 | function = find_function_in_inferior("istr", NULL); |
b81654f1 MS |
190 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
191 | } | |
192 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
193 | { | |
3e3b026f | 194 | function |
3b7538c0 UW |
195 | = find_function_in_inferior("+[NSString stringWithCString:]", NULL); |
196 | type = builtin_type (gdbarch)->builtin_long; | |
3e3b026f | 197 | |
b81654f1 | 198 | stringValue[0] = value_from_longest |
3b7538c0 | 199 | (type, lookup_objc_class (gdbarch, "NSString")); |
b81654f1 | 200 | stringValue[1] = value_from_longest |
3b7538c0 | 201 | (type, lookup_child_selector (gdbarch, "stringWithCString:")); |
b81654f1 MS |
202 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); |
203 | } | |
204 | else | |
8a3fe4f8 | 205 | error (_("NSString: internal error -- no way to create new NSString")); |
b81654f1 | 206 | |
3e3b026f UW |
207 | sym = lookup_struct_typedef("NSString", 0, 1); |
208 | if (sym == NULL) | |
209 | sym = lookup_struct_typedef("NXString", 0, 1); | |
210 | if (sym == NULL) | |
211 | type = builtin_type (gdbarch)->builtin_data_ptr; | |
212 | else | |
213 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
214 | ||
04624583 | 215 | deprecated_set_value_type (nsstringValue, type); |
b81654f1 MS |
216 | return nsstringValue; |
217 | } | |
218 | ||
d2e6263c | 219 | /* Objective-C name demangling. */ |
b81654f1 MS |
220 | |
221 | char * | |
9a3d7dfd | 222 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
223 | { |
224 | char *demangled, *cp; | |
225 | ||
226 | if (mangled[0] == '_' && | |
227 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
228 | mangled[2] == '_') | |
229 | { | |
230 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
231 | ||
232 | if (mangled[1] == 'i') | |
233 | *cp++ = '-'; /* for instance method */ | |
234 | else | |
235 | *cp++ = '+'; /* for class method */ | |
236 | ||
237 | *cp++ = '['; /* opening left brace */ | |
0df8b418 | 238 | strcpy(cp, mangled+3); /* Tack on the rest of the mangled name. */ |
b81654f1 MS |
239 | |
240 | while (*cp && *cp == '_') | |
0df8b418 MS |
241 | cp++; /* Skip any initial underbars in class |
242 | name. */ | |
b81654f1 | 243 | |
7248f48e | 244 | cp = strchr(cp, '_'); |
0df8b418 | 245 | if (!cp) /* Find first non-initial underbar. */ |
b81654f1 | 246 | { |
7248f48e | 247 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
248 | return NULL; |
249 | } | |
0df8b418 | 250 | if (cp[1] == '_') /* Easy case: no category name. */ |
5cc80db3 | 251 | { |
0df8b418 | 252 | *cp++ = ' '; /* Replace two '_' with one ' '. */ |
5cc80db3 MS |
253 | strcpy(cp, mangled + (cp - demangled) + 2); |
254 | } | |
255 | else | |
256 | { | |
0df8b418 | 257 | *cp++ = '('; /* Less easy case: category name. */ |
5cc80db3 MS |
258 | cp = strchr(cp, '_'); |
259 | if (!cp) | |
260 | { | |
261 | xfree(demangled); /* not mangled name */ | |
262 | return NULL; | |
263 | } | |
264 | *cp++ = ')'; | |
0df8b418 MS |
265 | *cp++ = ' '; /* Overwriting 1st char of method name... */ |
266 | strcpy(cp, mangled + (cp - demangled)); /* Get it back. */ | |
5cc80db3 | 267 | } |
b81654f1 MS |
268 | |
269 | while (*cp && *cp == '_') | |
0df8b418 MS |
270 | cp++; /* Skip any initial underbars in |
271 | method name. */ | |
b81654f1 MS |
272 | |
273 | for (; *cp; cp++) | |
274 | if (*cp == '_') | |
0df8b418 | 275 | *cp = ':'; /* Replace remaining '_' with ':'. */ |
b81654f1 MS |
276 | |
277 | *cp++ = ']'; /* closing right brace */ | |
278 | *cp++ = 0; /* string terminator */ | |
279 | return demangled; | |
280 | } | |
281 | else | |
d2e6263c | 282 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
283 | } |
284 | ||
d2e6263c MS |
285 | /* Print the character C on STREAM as part of the contents of a |
286 | literal string whose delimiter is QUOTER. Note that that format | |
287 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
288 | |
289 | static void | |
6c7a06a3 | 290 | objc_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
b81654f1 | 291 | { |
d2e6263c | 292 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
293 | |
294 | if (PRINT_LITERAL_FORM (c)) | |
295 | { | |
296 | if (c == '\\' || c == quoter) | |
297 | { | |
298 | fputs_filtered ("\\", stream); | |
299 | } | |
300 | fprintf_filtered (stream, "%c", c); | |
301 | } | |
302 | else | |
303 | { | |
304 | switch (c) | |
305 | { | |
306 | case '\n': | |
307 | fputs_filtered ("\\n", stream); | |
308 | break; | |
309 | case '\b': | |
310 | fputs_filtered ("\\b", stream); | |
311 | break; | |
312 | case '\t': | |
313 | fputs_filtered ("\\t", stream); | |
314 | break; | |
315 | case '\f': | |
316 | fputs_filtered ("\\f", stream); | |
317 | break; | |
318 | case '\r': | |
319 | fputs_filtered ("\\r", stream); | |
320 | break; | |
321 | case '\033': | |
322 | fputs_filtered ("\\e", stream); | |
323 | break; | |
324 | case '\007': | |
325 | fputs_filtered ("\\a", stream); | |
326 | break; | |
327 | default: | |
328 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
329 | break; | |
330 | } | |
331 | } | |
332 | } | |
333 | ||
334 | static void | |
6c7a06a3 | 335 | objc_printchar (int c, struct type *type, struct ui_file *stream) |
b81654f1 MS |
336 | { |
337 | fputs_filtered ("'", stream); | |
6c7a06a3 | 338 | objc_emit_char (c, type, stream, '\''); |
b81654f1 MS |
339 | fputs_filtered ("'", stream); |
340 | } | |
341 | ||
d2e6263c MS |
342 | /* Print the character string STRING, printing at most LENGTH |
343 | characters. Printing stops early if the number hits print_max; | |
344 | repeat counts are printed as appropriate. Print ellipses at the | |
345 | end if we had to stop before printing LENGTH characters, or if | |
346 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
347 | |
348 | static void | |
6c7a06a3 TT |
349 | objc_printstr (struct ui_file *stream, struct type *type, |
350 | const gdb_byte *string, unsigned int length, | |
be759fcf | 351 | const char *encoding, int force_ellipses, |
79a45b7d | 352 | const struct value_print_options *options) |
b81654f1 | 353 | { |
f86f5ca3 | 354 | unsigned int i; |
b81654f1 MS |
355 | unsigned int things_printed = 0; |
356 | int in_quotes = 0; | |
357 | int need_comma = 0; | |
b81654f1 MS |
358 | |
359 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
360 | the last byte of it is a null, we don't print that, in |
361 | traditional C style. */ | |
b81654f1 MS |
362 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
363 | length--; | |
364 | ||
365 | if (length == 0) | |
366 | { | |
367 | fputs_filtered ("\"\"", stream); | |
368 | return; | |
369 | } | |
370 | ||
79a45b7d | 371 | for (i = 0; i < length && things_printed < options->print_max; ++i) |
b81654f1 | 372 | { |
d2e6263c MS |
373 | /* Position of the character we are examining to see whether it |
374 | is repeated. */ | |
b81654f1 MS |
375 | unsigned int rep1; |
376 | /* Number of repetitions we have detected so far. */ | |
377 | unsigned int reps; | |
378 | ||
379 | QUIT; | |
380 | ||
381 | if (need_comma) | |
382 | { | |
383 | fputs_filtered (", ", stream); | |
384 | need_comma = 0; | |
385 | } | |
386 | ||
387 | rep1 = i + 1; | |
388 | reps = 1; | |
389 | while (rep1 < length && string[rep1] == string[i]) | |
390 | { | |
391 | ++rep1; | |
392 | ++reps; | |
393 | } | |
394 | ||
79a45b7d | 395 | if (reps > options->repeat_count_threshold) |
b81654f1 MS |
396 | { |
397 | if (in_quotes) | |
398 | { | |
79a45b7d | 399 | if (options->inspect_it) |
b81654f1 MS |
400 | fputs_filtered ("\\\", ", stream); |
401 | else | |
402 | fputs_filtered ("\", ", stream); | |
403 | in_quotes = 0; | |
404 | } | |
6c7a06a3 | 405 | objc_printchar (string[i], type, stream); |
b81654f1 MS |
406 | fprintf_filtered (stream, " <repeats %u times>", reps); |
407 | i = rep1 - 1; | |
79a45b7d | 408 | things_printed += options->repeat_count_threshold; |
b81654f1 MS |
409 | need_comma = 1; |
410 | } | |
411 | else | |
412 | { | |
413 | if (!in_quotes) | |
414 | { | |
79a45b7d | 415 | if (options->inspect_it) |
b81654f1 MS |
416 | fputs_filtered ("\\\"", stream); |
417 | else | |
418 | fputs_filtered ("\"", stream); | |
419 | in_quotes = 1; | |
420 | } | |
6c7a06a3 | 421 | objc_emit_char (string[i], type, stream, '"'); |
b81654f1 MS |
422 | ++things_printed; |
423 | } | |
424 | } | |
425 | ||
426 | /* Terminate the quotes if necessary. */ | |
427 | if (in_quotes) | |
428 | { | |
79a45b7d | 429 | if (options->inspect_it) |
b81654f1 MS |
430 | fputs_filtered ("\\\"", stream); |
431 | else | |
432 | fputs_filtered ("\"", stream); | |
433 | } | |
434 | ||
435 | if (force_ellipses || i < length) | |
436 | fputs_filtered ("...", stream); | |
437 | } | |
438 | ||
f636b87d AF |
439 | /* Determine if we are currently in the Objective-C dispatch function. |
440 | If so, get the address of the method function that the dispatcher | |
0df8b418 | 441 | would call and use that as the function to step into instead. Also |
f636b87d AF |
442 | skip over the trampoline for the function (if any). This is better |
443 | for the user since they are only interested in stepping into the | |
444 | method function anyway. */ | |
445 | static CORE_ADDR | |
52f729a7 | 446 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
f636b87d | 447 | { |
d80b854b | 448 | struct gdbarch *gdbarch = get_frame_arch (frame); |
f636b87d AF |
449 | CORE_ADDR real_stop_pc; |
450 | CORE_ADDR method_stop_pc; | |
451 | ||
d80b854b | 452 | real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc); |
f636b87d AF |
453 | |
454 | if (real_stop_pc != 0) | |
455 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
456 | else | |
457 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
458 | ||
459 | if (method_stop_pc) | |
460 | { | |
e76f05fa | 461 | real_stop_pc = gdbarch_skip_trampoline_code |
d80b854b | 462 | (gdbarch, frame, method_stop_pc); |
f636b87d AF |
463 | if (real_stop_pc == 0) |
464 | real_stop_pc = method_stop_pc; | |
465 | } | |
466 | ||
467 | return real_stop_pc; | |
468 | } | |
469 | ||
b81654f1 MS |
470 | |
471 | /* Table mapping opcodes into strings for printing operators | |
472 | and precedences of the operators. */ | |
473 | ||
474 | static const struct op_print objc_op_print_tab[] = | |
475 | { | |
476 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
477 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
478 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
479 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
480 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
481 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
482 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
483 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
484 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
485 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
486 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
487 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
488 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
489 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
490 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
491 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
492 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
493 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
494 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
495 | {"%", BINOP_REM, PREC_MUL, 0}, | |
496 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
497 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
498 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
499 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
500 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
501 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
502 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
503 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
504 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 505 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
506 | }; |
507 | ||
b81654f1 | 508 | const struct language_defn objc_language_defn = { |
d2e6263c | 509 | "objective-c", /* Language name */ |
b81654f1 | 510 | language_objc, |
b81654f1 MS |
511 | range_check_off, |
512 | type_check_off, | |
513 | case_sensitive_on, | |
7ca2d3a3 | 514 | array_row_major, |
9a044a89 | 515 | macro_expansion_c, |
5f9769d1 | 516 | &exp_descriptor_standard, |
b81654f1 MS |
517 | objc_parse, |
518 | objc_error, | |
e85c3284 | 519 | null_post_parser, |
b81654f1 MS |
520 | objc_printchar, /* Print a character constant */ |
521 | objc_printstr, /* Function to print string constant */ | |
522 | objc_emit_char, | |
b81654f1 | 523 | c_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 524 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
b81654f1 MS |
525 | c_val_print, /* Print a value using appropriate syntax */ |
526 | c_value_print, /* Print a top-level value */ | |
f636b87d | 527 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
2b2d9e11 | 528 | "self", /* name_of_this */ |
5f9a71c3 | 529 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
b368761e | 530 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 531 | objc_demangle, /* Language specific symbol demangler */ |
0df8b418 MS |
532 | NULL, /* Language specific |
533 | class_name_from_physname */ | |
d2e6263c MS |
534 | objc_op_print_tab, /* Expression operators for printing */ |
535 | 1, /* C-style arrays */ | |
b81654f1 | 536 | 0, /* String lower bound */ |
6084f43a | 537 | default_word_break_characters, |
41d27058 | 538 | default_make_symbol_completion_list, |
cad351d1 | 539 | c_language_arch_info, |
e79af960 | 540 | default_print_array_index, |
41f1b697 | 541 | default_pass_by_reference, |
ae6a3a4c | 542 | default_get_string, |
74ccd7f5 | 543 | NULL, /* la_get_symbol_name_match_p */ |
f8eba3c6 | 544 | iterate_over_symbols, |
b81654f1 MS |
545 | LANG_MAGIC |
546 | }; | |
547 | ||
548 | /* | |
549 | * ObjC: | |
0df8b418 | 550 | * Following functions help construct Objective-C message calls. |
b81654f1 MS |
551 | */ |
552 | ||
d2e6263c | 553 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
554 | { |
555 | struct selname *next; | |
556 | char *msglist_sel; | |
557 | int msglist_len; | |
558 | }; | |
559 | ||
560 | static int msglist_len; | |
561 | static struct selname *selname_chain; | |
562 | static char *msglist_sel; | |
563 | ||
564 | void | |
565 | start_msglist(void) | |
566 | { | |
f86f5ca3 | 567 | struct selname *new = |
b81654f1 MS |
568 | (struct selname *) xmalloc (sizeof (struct selname)); |
569 | ||
570 | new->next = selname_chain; | |
571 | new->msglist_len = msglist_len; | |
572 | new->msglist_sel = msglist_sel; | |
573 | msglist_len = 0; | |
574 | msglist_sel = (char *)xmalloc(1); | |
575 | *msglist_sel = 0; | |
576 | selname_chain = new; | |
577 | } | |
578 | ||
579 | void | |
580 | add_msglist(struct stoken *str, int addcolon) | |
581 | { | |
582 | char *s, *p; | |
583 | int len, plen; | |
584 | ||
5cc80db3 MS |
585 | if (str == 0) /* Unnamed arg, or... */ |
586 | { | |
587 | if (addcolon == 0) /* variable number of args. */ | |
588 | { | |
589 | msglist_len++; | |
590 | return; | |
591 | } | |
592 | p = ""; | |
593 | plen = 0; | |
594 | } | |
595 | else | |
596 | { | |
597 | p = str->ptr; | |
598 | plen = str->length; | |
b81654f1 | 599 | } |
b81654f1 MS |
600 | len = plen + strlen(msglist_sel) + 2; |
601 | s = (char *)xmalloc(len); | |
602 | strcpy(s, msglist_sel); | |
603 | strncat(s, p, plen); | |
7248f48e | 604 | xfree(msglist_sel); |
b81654f1 | 605 | msglist_sel = s; |
5cc80db3 MS |
606 | if (addcolon) |
607 | { | |
608 | s[len-2] = ':'; | |
609 | s[len-1] = 0; | |
610 | msglist_len++; | |
611 | } | |
612 | else | |
b81654f1 MS |
613 | s[len-2] = '\0'; |
614 | } | |
615 | ||
616 | int | |
617 | end_msglist(void) | |
618 | { | |
f86f5ca3 PH |
619 | int val = msglist_len; |
620 | struct selname *sel = selname_chain; | |
621 | char *p = msglist_sel; | |
c253954e | 622 | CORE_ADDR selid; |
b81654f1 MS |
623 | |
624 | selname_chain = sel->next; | |
625 | msglist_len = sel->msglist_len; | |
626 | msglist_sel = sel->msglist_sel; | |
3b7538c0 | 627 | selid = lookup_child_selector (parse_gdbarch, p); |
b81654f1 | 628 | if (!selid) |
8a3fe4f8 | 629 | error (_("Can't find selector \"%s\""), p); |
b81654f1 | 630 | write_exp_elt_longcst (selid); |
7248f48e | 631 | xfree(p); |
d2e6263c | 632 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 633 | xfree(sel); |
b81654f1 MS |
634 | |
635 | return val; | |
636 | } | |
637 | ||
638 | /* | |
639 | * Function: specialcmp (char *a, char *b) | |
640 | * | |
641 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 642 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
643 | */ |
644 | ||
b9362cc7 AC |
645 | static int |
646 | specialcmp (char *a, char *b) | |
b81654f1 MS |
647 | { |
648 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
649 | { | |
650 | if (*a != *b) | |
651 | return *a - *b; | |
652 | a++, b++; | |
653 | } | |
654 | if (*a && *a != ' ' && *a != ']') | |
0df8b418 | 655 | return 1; /* a is longer therefore greater. */ |
b81654f1 | 656 | if (*b && *b != ' ' && *b != ']') |
0df8b418 MS |
657 | return -1; /* a is shorter therefore lesser. */ |
658 | return 0; /* a and b are identical. */ | |
b81654f1 MS |
659 | } |
660 | ||
661 | /* | |
36e53c63 | 662 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 663 | * |
d2e6263c MS |
664 | * Comparison function for use with qsort. Arguments are symbols or |
665 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
666 | */ |
667 | ||
668 | static int | |
36e53c63 | 669 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
670 | { |
671 | char *aname, *bname; | |
672 | ||
de5ad195 DC |
673 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
674 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 675 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 676 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 677 | |
7248f48e AF |
678 | aname = strchr(aname, ' '); |
679 | bname = strchr(bname, ' '); | |
680 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 681 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
682 | |
683 | return specialcmp (aname+1, bname+1); | |
684 | } | |
685 | ||
686 | /* | |
687 | * Function: selectors_info (regexp, from_tty) | |
688 | * | |
d2e6263c MS |
689 | * Implements the "Info selectors" command. Takes an optional regexp |
690 | * arg. Lists all objective c selectors that match the regexp. Works | |
691 | * by grepping thru all symbols for objective c methods. Output list | |
692 | * is sorted and uniqued. | |
b81654f1 MS |
693 | */ |
694 | ||
695 | static void | |
696 | selectors_info (char *regexp, int from_tty) | |
697 | { | |
698 | struct objfile *objfile; | |
699 | struct minimal_symbol *msymbol; | |
700 | char *name; | |
701 | char *val; | |
702 | int matches = 0; | |
703 | int maxlen = 0; | |
704 | int ix; | |
705 | char myregexp[2048]; | |
706 | char asel[256]; | |
707 | struct symbol **sym_arr; | |
708 | int plusminus = 0; | |
709 | ||
710 | if (regexp == NULL) | |
d2e6263c | 711 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
712 | else |
713 | { | |
d2e6263c MS |
714 | if (*regexp == '+' || *regexp == '-') |
715 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
716 | plusminus = *regexp++; |
717 | while (*regexp == ' ' || *regexp == '\t') | |
718 | regexp++; | |
719 | } | |
720 | if (*regexp == '\0') | |
721 | strcpy(myregexp, ".*]"); | |
722 | else | |
723 | { | |
a9dc8dcc | 724 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 | 725 | if (sizeof (myregexp) < strlen (regexp) + 4) |
20937029 JK |
726 | error (_("Regexp is too long: %s"), regexp); |
727 | strcpy(myregexp, regexp); | |
b81654f1 MS |
728 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ |
729 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
730 | else | |
731 | strcat(myregexp, ".*]"); | |
732 | } | |
733 | } | |
734 | ||
735 | if (regexp != NULL) | |
5e488a7b AC |
736 | { |
737 | val = re_comp (myregexp); | |
738 | if (val != 0) | |
8a3fe4f8 | 739 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 740 | } |
b81654f1 | 741 | |
d2e6263c | 742 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
743 | ALL_MSYMBOLS (objfile, msymbol) |
744 | { | |
745 | QUIT; | |
36018d2e | 746 | name = SYMBOL_NATURAL_NAME (msymbol); |
3e6ef9e4 JB |
747 | if (name |
748 | && (name[0] == '-' || name[0] == '+') | |
749 | && name[1] == '[') /* Got a method name. */ | |
b81654f1 | 750 | { |
d2e6263c | 751 | /* Filter for class/instance methods. */ |
b81654f1 | 752 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
753 | continue; |
754 | /* Find selector part. */ | |
3e6ef9e4 | 755 | name = (char *) strchr (name+2, ' '); |
50412521 MS |
756 | if (name == NULL) |
757 | { | |
758 | complaint (&symfile_complaints, | |
759 | _("Bad method name '%s'"), | |
760 | SYMBOL_NATURAL_NAME (msymbol)); | |
761 | continue; | |
762 | } | |
b81654f1 MS |
763 | if (regexp == NULL || re_exec(++name) != 0) |
764 | { | |
765 | char *mystart = name; | |
3e6ef9e4 | 766 | char *myend = (char *) strchr (mystart, ']'); |
b81654f1 MS |
767 | |
768 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 769 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
770 | matches++; |
771 | } | |
772 | } | |
773 | } | |
774 | if (matches) | |
775 | { | |
a3f17187 | 776 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
777 | regexp ? regexp : "*"); |
778 | ||
779 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
780 | matches = 0; | |
781 | ALL_MSYMBOLS (objfile, msymbol) | |
782 | { | |
783 | QUIT; | |
36018d2e | 784 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
785 | if (name && |
786 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 787 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 788 | { |
d2e6263c | 789 | /* Filter for class/instance methods. */ |
b81654f1 | 790 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
791 | continue; |
792 | /* Find selector part. */ | |
793 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
794 | if (regexp == NULL || re_exec(++name) != 0) |
795 | sym_arr[matches++] = (struct symbol *) msymbol; | |
796 | } | |
797 | } | |
798 | ||
799 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
800 | compare_selectors); | |
d2e6263c MS |
801 | /* Prevent compare on first iteration. */ |
802 | asel[0] = 0; | |
803 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
804 | { |
805 | char *p = asel; | |
806 | ||
807 | QUIT; | |
36018d2e | 808 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
809 | name = strchr (name, ' ') + 1; |
810 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 811 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 812 | |
d2e6263c MS |
813 | /* Copy selector part. */ |
814 | while (*name && *name != ']') | |
b81654f1 MS |
815 | *p++ = *name++; |
816 | *p++ = '\0'; | |
d2e6263c MS |
817 | /* Print in columns. */ |
818 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
819 | } |
820 | begin_line(); | |
821 | } | |
822 | else | |
0df8b418 MS |
823 | printf_filtered (_("No selectors matching \"%s\"\n"), |
824 | regexp ? regexp : "*"); | |
b81654f1 MS |
825 | } |
826 | ||
827 | /* | |
36e53c63 | 828 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 829 | * |
d2e6263c MS |
830 | * Comparison function for use with qsort. Arguments are symbols or |
831 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
832 | */ |
833 | ||
834 | static int | |
36e53c63 | 835 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
836 | { |
837 | char *aname, *bname; | |
838 | ||
de5ad195 DC |
839 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
840 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 841 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 842 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
843 | |
844 | return specialcmp (aname+1, bname+1); | |
845 | } | |
846 | ||
847 | /* | |
848 | * Function: classes_info(regexp, from_tty) | |
849 | * | |
850 | * Implements the "info classes" command for objective c classes. | |
851 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
852 | * Works by grepping thru the list of objective c methods. List will |
853 | * be sorted and uniqued (since one class may have many methods). | |
854 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
855 | */ |
856 | ||
857 | static void | |
858 | classes_info (char *regexp, int from_tty) | |
859 | { | |
860 | struct objfile *objfile; | |
861 | struct minimal_symbol *msymbol; | |
862 | char *name; | |
863 | char *val; | |
864 | int matches = 0; | |
865 | int maxlen = 0; | |
866 | int ix; | |
867 | char myregexp[2048]; | |
868 | char aclass[256]; | |
869 | struct symbol **sym_arr; | |
870 | ||
871 | if (regexp == NULL) | |
d2e6263c | 872 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
873 | else |
874 | { | |
a9dc8dcc | 875 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 MS |
876 | if (sizeof (myregexp) < strlen (regexp) + 4) |
877 | error (_("Regexp is too long: %s"), regexp); | |
b81654f1 MS |
878 | strcpy(myregexp, regexp); |
879 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 880 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
881 | myregexp[strlen(myregexp) - 1] = ' '; |
882 | else | |
883 | strcat(myregexp, ".* "); | |
884 | } | |
885 | ||
886 | if (regexp != NULL) | |
5e488a7b AC |
887 | { |
888 | val = re_comp (myregexp); | |
889 | if (val != 0) | |
8a3fe4f8 | 890 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 891 | } |
b81654f1 | 892 | |
d2e6263c | 893 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
894 | ALL_MSYMBOLS (objfile, msymbol) |
895 | { | |
896 | QUIT; | |
36018d2e | 897 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
898 | if (name && |
899 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 900 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
901 | if (regexp == NULL || re_exec(name+2) != 0) |
902 | { | |
d2e6263c MS |
903 | /* Compute length of classname part. */ |
904 | char *mystart = name + 2; | |
b81654f1 MS |
905 | char *myend = (char *) strchr(mystart, ' '); |
906 | ||
907 | if (myend && (myend - mystart > maxlen)) | |
908 | maxlen = myend - mystart; | |
909 | matches++; | |
910 | } | |
911 | } | |
912 | if (matches) | |
913 | { | |
a3f17187 | 914 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 MS |
915 | regexp ? regexp : "*"); |
916 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
917 | matches = 0; | |
918 | ALL_MSYMBOLS (objfile, msymbol) | |
919 | { | |
920 | QUIT; | |
36018d2e | 921 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
922 | if (name && |
923 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 924 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
925 | if (regexp == NULL || re_exec(name+2) != 0) |
926 | sym_arr[matches++] = (struct symbol *) msymbol; | |
927 | } | |
928 | ||
929 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
930 | compare_classes); | |
d2e6263c MS |
931 | /* Prevent compare on first iteration. */ |
932 | aclass[0] = 0; | |
933 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
934 | { |
935 | char *p = aclass; | |
936 | ||
937 | QUIT; | |
36018d2e | 938 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
939 | name += 2; |
940 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 941 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 942 | |
d2e6263c MS |
943 | /* Copy class part of method name. */ |
944 | while (*name && *name != ' ') | |
b81654f1 MS |
945 | *p++ = *name++; |
946 | *p++ = '\0'; | |
d2e6263c MS |
947 | /* Print in columns. */ |
948 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
949 | } |
950 | begin_line(); | |
951 | } | |
952 | else | |
a3f17187 | 953 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
954 | } |
955 | ||
f8eba3c6 | 956 | static char * |
b81654f1 MS |
957 | parse_selector (char *method, char **selector) |
958 | { | |
959 | char *s1 = NULL; | |
960 | char *s2 = NULL; | |
961 | int found_quote = 0; | |
962 | ||
963 | char *nselector = NULL; | |
964 | ||
e8f3fcdd | 965 | gdb_assert (selector != NULL); |
b81654f1 MS |
966 | |
967 | s1 = method; | |
968 | ||
969 | while (isspace (*s1)) | |
970 | s1++; | |
971 | if (*s1 == '\'') | |
972 | { | |
973 | found_quote = 1; | |
974 | s1++; | |
975 | } | |
976 | while (isspace (*s1)) | |
977 | s1++; | |
978 | ||
979 | nselector = s1; | |
980 | s2 = s1; | |
981 | ||
5cc80db3 MS |
982 | for (;;) |
983 | { | |
984 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
985 | *s1++ = *s2; | |
986 | else if (isspace (*s2)) | |
987 | ; | |
988 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
989 | break; | |
990 | else | |
991 | return NULL; | |
992 | s2++; | |
993 | } | |
b81654f1 MS |
994 | *s1++ = '\0'; |
995 | ||
996 | while (isspace (*s2)) | |
997 | s2++; | |
998 | if (found_quote) | |
999 | { | |
1000 | if (*s2 == '\'') | |
1001 | s2++; | |
1002 | while (isspace (*s2)) | |
1003 | s2++; | |
1004 | } | |
1005 | ||
1006 | if (selector != NULL) | |
1007 | *selector = nselector; | |
1008 | ||
1009 | return s2; | |
1010 | } | |
1011 | ||
f8eba3c6 | 1012 | static char * |
d2e6263c MS |
1013 | parse_method (char *method, char *type, char **class, |
1014 | char **category, char **selector) | |
b81654f1 MS |
1015 | { |
1016 | char *s1 = NULL; | |
1017 | char *s2 = NULL; | |
1018 | int found_quote = 0; | |
1019 | ||
1020 | char ntype = '\0'; | |
1021 | char *nclass = NULL; | |
1022 | char *ncategory = NULL; | |
1023 | char *nselector = NULL; | |
1024 | ||
e8f3fcdd AC |
1025 | gdb_assert (type != NULL); |
1026 | gdb_assert (class != NULL); | |
1027 | gdb_assert (category != NULL); | |
1028 | gdb_assert (selector != NULL); | |
b81654f1 MS |
1029 | |
1030 | s1 = method; | |
1031 | ||
1032 | while (isspace (*s1)) | |
1033 | s1++; | |
1034 | if (*s1 == '\'') | |
1035 | { | |
1036 | found_quote = 1; | |
1037 | s1++; | |
1038 | } | |
1039 | while (isspace (*s1)) | |
1040 | s1++; | |
1041 | ||
1042 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1043 | ntype = *s1++; | |
1044 | ||
1045 | while (isspace (*s1)) | |
1046 | s1++; | |
1047 | ||
1048 | if (*s1 != '[') | |
1049 | return NULL; | |
1050 | s1++; | |
1051 | ||
1052 | nclass = s1; | |
1053 | while (isalnum (*s1) || (*s1 == '_')) | |
1054 | s1++; | |
1055 | ||
1056 | s2 = s1; | |
1057 | while (isspace (*s2)) | |
1058 | s2++; | |
1059 | ||
1060 | if (*s2 == '(') | |
1061 | { | |
1062 | s2++; | |
1063 | while (isspace (*s2)) | |
1064 | s2++; | |
1065 | ncategory = s2; | |
1066 | while (isalnum (*s2) || (*s2 == '_')) | |
1067 | s2++; | |
1068 | *s2++ = '\0'; | |
1069 | } | |
1070 | ||
d2e6263c | 1071 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1072 | *s1++ = '\0'; |
1073 | ||
1074 | nselector = s2; | |
1075 | s1 = s2; | |
1076 | ||
5cc80db3 MS |
1077 | for (;;) |
1078 | { | |
1079 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1080 | *s1++ = *s2; | |
1081 | else if (isspace (*s2)) | |
1082 | ; | |
1083 | else if (*s2 == ']') | |
1084 | break; | |
1085 | else | |
1086 | return NULL; | |
1087 | s2++; | |
1088 | } | |
b81654f1 MS |
1089 | *s1++ = '\0'; |
1090 | s2++; | |
1091 | ||
1092 | while (isspace (*s2)) | |
1093 | s2++; | |
1094 | if (found_quote) | |
1095 | { | |
1096 | if (*s2 != '\'') | |
1097 | return NULL; | |
1098 | s2++; | |
1099 | while (isspace (*s2)) | |
1100 | s2++; | |
1101 | } | |
1102 | ||
1103 | if (type != NULL) | |
1104 | *type = ntype; | |
1105 | if (class != NULL) | |
1106 | *class = nclass; | |
1107 | if (category != NULL) | |
1108 | *category = ncategory; | |
1109 | if (selector != NULL) | |
1110 | *selector = nselector; | |
1111 | ||
1112 | return s2; | |
1113 | } | |
1114 | ||
2f9a90b4 | 1115 | static void |
f8eba3c6 TT |
1116 | find_methods (char type, const char *class, const char *category, |
1117 | const char *selector, | |
1118 | VEC (const_char_ptr) **symbol_names) | |
b81654f1 MS |
1119 | { |
1120 | struct objfile *objfile = NULL; | |
b81654f1 MS |
1121 | |
1122 | char *symname = NULL; | |
1123 | ||
1124 | char ntype = '\0'; | |
1125 | char *nclass = NULL; | |
1126 | char *ncategory = NULL; | |
1127 | char *nselector = NULL; | |
1128 | ||
b81654f1 MS |
1129 | static char *tmp = NULL; |
1130 | static unsigned int tmplen = 0; | |
1131 | ||
f8eba3c6 | 1132 | gdb_assert (symbol_names != NULL); |
b81654f1 | 1133 | |
57a9e6af | 1134 | ALL_OBJFILES (objfile) |
b81654f1 | 1135 | { |
57a9e6af | 1136 | unsigned int *objc_csym; |
f8eba3c6 | 1137 | struct minimal_symbol *msymbol = NULL; |
b81654f1 | 1138 | |
57a9e6af PP |
1139 | /* The objfile_csym variable counts the number of ObjC methods |
1140 | that this objfile defines. We save that count as a private | |
1141 | objfile data. If we have already determined that this objfile | |
1142 | provides no ObjC methods, we can skip it entirely. */ | |
b81654f1 | 1143 | |
57a9e6af | 1144 | unsigned int objfile_csym = 0; |
b81654f1 | 1145 | |
57a9e6af PP |
1146 | objc_csym = objfile_data (objfile, objc_objfile_data); |
1147 | if (objc_csym != NULL && *objc_csym == 0) | |
1148 | /* There are no ObjC symbols in this objfile. Skip it entirely. */ | |
b81654f1 MS |
1149 | continue; |
1150 | ||
57a9e6af | 1151 | ALL_OBJFILE_MSYMBOLS (objfile, msymbol) |
b81654f1 | 1152 | { |
69368a60 | 1153 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
69368a60 | 1154 | |
57a9e6af | 1155 | QUIT; |
b81654f1 | 1156 | |
0c4b2e63 MF |
1157 | /* Check the symbol name first as this can be done entirely without |
1158 | sending any query to the target. */ | |
1159 | symname = SYMBOL_NATURAL_NAME (msymbol); | |
1160 | if (symname == NULL) | |
1161 | continue; | |
1162 | ||
1163 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1164 | /* Not a method name. */ | |
1165 | continue; | |
1166 | ||
8dfd1e6d KS |
1167 | objfile_csym++; |
1168 | ||
0c4b2e63 | 1169 | /* Now that thinks are a bit sane, clean up the symname. */ |
57a9e6af PP |
1170 | while ((strlen (symname) + 1) >= tmplen) |
1171 | { | |
1172 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1173 | tmp = xrealloc (tmp, tmplen); | |
1174 | } | |
1175 | strcpy (tmp, symname); | |
b81654f1 | 1176 | |
0df8b418 MS |
1177 | if (parse_method (tmp, &ntype, &nclass, |
1178 | &ncategory, &nselector) == NULL) | |
57a9e6af | 1179 | continue; |
b81654f1 | 1180 | |
57a9e6af PP |
1181 | if ((type != '\0') && (ntype != type)) |
1182 | continue; | |
b81654f1 | 1183 | |
57a9e6af PP |
1184 | if ((class != NULL) |
1185 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
1186 | continue; | |
1187 | ||
1188 | if ((category != NULL) && | |
1189 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1190 | continue; | |
b81654f1 | 1191 | |
57a9e6af PP |
1192 | if ((selector != NULL) && |
1193 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1194 | continue; | |
1195 | ||
f8eba3c6 | 1196 | VEC_safe_push (const_char_ptr, *symbol_names, symname); |
57a9e6af | 1197 | } |
f8eba3c6 | 1198 | |
57a9e6af | 1199 | if (objc_csym == NULL) |
b81654f1 | 1200 | { |
6342b74a PP |
1201 | objc_csym = obstack_alloc (&objfile->objfile_obstack, |
1202 | sizeof (*objc_csym)); | |
57a9e6af PP |
1203 | *objc_csym = objfile_csym; |
1204 | set_objfile_data (objfile, objc_objfile_data, objc_csym); | |
b81654f1 | 1205 | } |
57a9e6af PP |
1206 | else |
1207 | /* Count of ObjC methods in this objfile should be constant. */ | |
1208 | gdb_assert (*objc_csym == objfile_csym); | |
b81654f1 | 1209 | } |
f8eba3c6 | 1210 | } |
b81654f1 | 1211 | |
f8eba3c6 TT |
1212 | /* Uniquify a VEC of strings. */ |
1213 | ||
1214 | static void | |
1215 | uniquify_strings (VEC (const_char_ptr) **strings) | |
1216 | { | |
1217 | int ix; | |
1218 | const char *elem, *last = NULL; | |
1219 | int out; | |
1220 | ||
1221 | qsort (VEC_address (const_char_ptr, *strings), | |
1222 | VEC_length (const_char_ptr, *strings), | |
1223 | sizeof (const_char_ptr), | |
1224 | compare_strings); | |
1225 | out = 0; | |
1226 | for (ix = 0; VEC_iterate (const_char_ptr, *strings, ix, elem); ++ix) | |
1227 | { | |
1228 | if (last == NULL || strcmp (last, elem) != 0) | |
1229 | { | |
1230 | /* Keep ELEM. */ | |
1231 | VEC_replace (const_char_ptr, *strings, out, elem); | |
1232 | ++out; | |
1233 | } | |
1234 | last = elem; | |
1235 | } | |
1236 | VEC_truncate (const_char_ptr, *strings, out); | |
b81654f1 MS |
1237 | } |
1238 | ||
f8eba3c6 TT |
1239 | /* |
1240 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
1241 | * | |
1242 | * Input: a string representing a selector | |
1243 | * a pointer to an array of symbol pointers | |
1244 | * possibly a pointer to a symbol found by the caller. | |
1245 | * | |
1246 | * Output: number of methods that implement that selector. Side | |
1247 | * effects: The array of symbol pointers is filled with matching syms. | |
1248 | * | |
1249 | * By analogy with function "find_methods" (symtab.c), builds a list | |
1250 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1251 | * (symtab.c) can list them and ask the user to choose one or more. | |
1252 | * In this case the matches are objective c methods | |
1253 | * ("implementations") matching an objective c selector. | |
1254 | * | |
1255 | * Note that it is possible for a normal (c-style) function to have | |
1256 | * the same name as an objective c selector. To prevent the selector | |
1257 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1258 | * search for such a function first, and if it finds one, pass it in | |
1259 | * to us. We will then integrate it into the list. We also search | |
1260 | * for one here, among the minsyms. | |
1261 | * | |
1262 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided | |
1263 | * into two parts: debuggable (struct symbol) syms, and | |
1264 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1265 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1266 | * be the index of the first non-debuggable one). | |
1267 | */ | |
1268 | ||
1269 | char * | |
1270 | find_imps (char *method, VEC (const_char_ptr) **symbol_names) | |
b81654f1 MS |
1271 | { |
1272 | char type = '\0'; | |
1273 | char *class = NULL; | |
1274 | char *category = NULL; | |
1275 | char *selector = NULL; | |
1276 | ||
b81654f1 MS |
1277 | char *buf = NULL; |
1278 | char *tmp = NULL; | |
1279 | ||
f8eba3c6 | 1280 | int selector_case = 0; |
b81654f1 | 1281 | |
f8eba3c6 | 1282 | gdb_assert (symbol_names != NULL); |
b81654f1 MS |
1283 | |
1284 | buf = (char *) alloca (strlen (method) + 1); | |
1285 | strcpy (buf, method); | |
1286 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1287 | ||
5cc80db3 MS |
1288 | if (tmp == NULL) |
1289 | { | |
5cc80db3 MS |
1290 | strcpy (buf, method); |
1291 | tmp = parse_selector (buf, &selector); | |
b81654f1 | 1292 | |
5cc80db3 MS |
1293 | if (tmp == NULL) |
1294 | return NULL; | |
1295 | ||
f8eba3c6 | 1296 | selector_case = 1; |
5cc80db3 | 1297 | } |
b81654f1 | 1298 | |
f8eba3c6 | 1299 | find_methods (type, class, category, selector, symbol_names); |
b81654f1 | 1300 | |
f8eba3c6 TT |
1301 | /* If we hit the "selector" case, and we found some methods, then |
1302 | add the selector itself as a symbol, if it exists. */ | |
1303 | if (selector_case && !VEC_empty (const_char_ptr, *symbol_names)) | |
b81654f1 | 1304 | { |
f8eba3c6 TT |
1305 | struct symbol *sym = lookup_symbol (selector, NULL, VAR_DOMAIN, 0); |
1306 | ||
1307 | if (sym != NULL) | |
1308 | VEC_safe_push (const_char_ptr, *symbol_names, | |
1309 | SYMBOL_NATURAL_NAME (sym)); | |
1310 | else | |
b81654f1 | 1311 | { |
f8eba3c6 TT |
1312 | struct minimal_symbol *msym = lookup_minimal_symbol (selector, 0, 0); |
1313 | ||
1314 | if (msym != NULL) | |
1315 | VEC_safe_push (const_char_ptr, *symbol_names, | |
1316 | SYMBOL_NATURAL_NAME (msym)); | |
b81654f1 MS |
1317 | } |
1318 | } | |
1319 | ||
f8eba3c6 | 1320 | uniquify_strings (symbol_names); |
b81654f1 MS |
1321 | |
1322 | return method + (tmp - buf); | |
1323 | } | |
1324 | ||
b9362cc7 | 1325 | static void |
b81654f1 MS |
1326 | print_object_command (char *args, int from_tty) |
1327 | { | |
1328 | struct value *object, *function, *description; | |
36e53c63 | 1329 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1330 | int i = 0; |
22a44745 | 1331 | gdb_byte c = 0; |
b81654f1 MS |
1332 | |
1333 | if (!args || !*args) | |
d2e6263c MS |
1334 | error ( |
1335 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1336 | |
1337 | { | |
1338 | struct expression *expr = parse_expression (args); | |
f86f5ca3 | 1339 | struct cleanup *old_chain = |
d2e6263c | 1340 | make_cleanup (free_current_contents, &expr); |
b81654f1 MS |
1341 | int pc = 0; |
1342 | ||
4b27a620 JB |
1343 | object = evaluate_subexp (builtin_type (expr->gdbarch)->builtin_data_ptr, |
1344 | expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1345 | do_cleanups (old_chain); |
1346 | } | |
1347 | ||
36e53c63 AF |
1348 | /* Validate the address for sanity. */ |
1349 | object_addr = value_as_long (object); | |
1350 | read_memory (object_addr, &c, 1); | |
1351 | ||
3e3b026f | 1352 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); |
36e53c63 | 1353 | if (function == NULL) |
8a3fe4f8 | 1354 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 MS |
1355 | |
1356 | description = call_function_by_hand (function, 1, &object); | |
1357 | ||
7248f48e AF |
1358 | string_addr = value_as_long (description); |
1359 | if (string_addr == 0) | |
8a3fe4f8 | 1360 | error (_("object returns null description")); |
b81654f1 MS |
1361 | |
1362 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1363 | if (c != 0) |
b81654f1 | 1364 | do |
d2e6263c | 1365 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1366 | QUIT; |
1367 | printf_filtered ("%c", c); | |
1368 | read_memory (string_addr + i++, &c, 1); | |
1369 | } while (c != 0); | |
1370 | else | |
a3f17187 | 1371 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1372 | printf_filtered ("\n"); |
1373 | } | |
1374 | ||
d2e6263c MS |
1375 | /* The data structure 'methcalls' is used to detect method calls (thru |
1376 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
0df8b418 | 1377 | * and ultimately find the method being called. |
b81654f1 MS |
1378 | */ |
1379 | ||
1380 | struct objc_methcall { | |
1381 | char *name; | |
d2e6263c | 1382 | /* Return instance method to be called. */ |
36e53c63 | 1383 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1384 | /* Start of pc range corresponding to method invocation. */ |
1385 | CORE_ADDR begin; | |
1386 | /* End of pc range corresponding to method invocation. */ | |
1387 | CORE_ADDR end; | |
b81654f1 MS |
1388 | }; |
1389 | ||
d2e6263c MS |
1390 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1391 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1392 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1393 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1394 | |
1395 | static struct objc_methcall methcalls[] = { | |
1396 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1397 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1398 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1399 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1400 | { "_objc_getClass", NULL, 0, 0}, | |
1401 | { "_objc_getMetaClass", NULL, 0, 0} | |
1402 | }; | |
1403 | ||
1404 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1405 | ||
d2e6263c MS |
1406 | /* The following function, "find_objc_msgsend", fills in the data |
1407 | * structure "objc_msgs" by finding the addresses of each of the | |
1408 | * (currently four) functions that it holds (of which objc_msgSend is | |
1409 | * the first). This must be called each time symbols are loaded, in | |
0df8b418 | 1410 | * case the functions have moved for some reason. |
b81654f1 MS |
1411 | */ |
1412 | ||
b9362cc7 | 1413 | static void |
b81654f1 MS |
1414 | find_objc_msgsend (void) |
1415 | { | |
1416 | unsigned int i; | |
b81654f1 | 1417 | |
5cc80db3 MS |
1418 | for (i = 0; i < nmethcalls; i++) |
1419 | { | |
1420 | struct minimal_symbol *func; | |
b81654f1 | 1421 | |
5cc80db3 MS |
1422 | /* Try both with and without underscore. */ |
1423 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); | |
1424 | if ((func == NULL) && (methcalls[i].name[0] == '_')) | |
1425 | { | |
1426 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1427 | } | |
1428 | if (func == NULL) | |
1429 | { | |
1430 | methcalls[i].begin = 0; | |
1431 | methcalls[i].end = 0; | |
1432 | continue; | |
1433 | } | |
1434 | ||
1435 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1436 | do { | |
1437 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1438 | } while (methcalls[i].begin == methcalls[i].end); | |
b81654f1 | 1439 | } |
b81654f1 MS |
1440 | } |
1441 | ||
1442 | /* find_objc_msgcall (replaces pc_off_limits) | |
1443 | * | |
d2e6263c MS |
1444 | * ALL that this function now does is to determine whether the input |
1445 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1446 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1447 | * if so, it returns the address of the method that will be called. | |
1448 | * | |
1449 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1450 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1451 | * returning the address of the shlib function that would be called. |
e76f05fa | 1452 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c | 1453 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
0df8b418 | 1454 | * dependent modules. |
b81654f1 MS |
1455 | */ |
1456 | ||
1457 | struct objc_submethod_helper_data { | |
36e53c63 | 1458 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1459 | CORE_ADDR pc; |
1460 | CORE_ADDR *new_pc; | |
1461 | }; | |
1462 | ||
b9362cc7 | 1463 | static int |
7248f48e | 1464 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1465 | { |
d2e6263c MS |
1466 | struct objc_submethod_helper_data *s = |
1467 | (struct objc_submethod_helper_data *) arg; | |
1468 | ||
1469 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1470 | return 1; |
d2e6263c | 1471 | else |
b81654f1 | 1472 | return 0; |
b81654f1 MS |
1473 | } |
1474 | ||
b9362cc7 | 1475 | static int |
36e53c63 | 1476 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1477 | CORE_ADDR pc, |
1478 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1479 | { |
1480 | struct objc_submethod_helper_data s; | |
1481 | ||
1482 | s.f = f; | |
1483 | s.pc = pc; | |
1484 | s.new_pc = new_pc; | |
1485 | ||
1486 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1487 | (void *) &s, |
0df8b418 MS |
1488 | "Unable to determine target of " |
1489 | "Objective-C method call (ignoring):\n", | |
d2e6263c | 1490 | RETURN_MASK_ALL) == 0) |
b81654f1 | 1491 | return 1; |
d2e6263c | 1492 | else |
b81654f1 | 1493 | return 0; |
b81654f1 MS |
1494 | } |
1495 | ||
1496 | int | |
1497 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1498 | { | |
1499 | unsigned int i; | |
1500 | ||
1501 | find_objc_msgsend (); | |
5e488a7b AC |
1502 | if (new_pc != NULL) |
1503 | { | |
1504 | *new_pc = 0; | |
1505 | } | |
b81654f1 | 1506 | |
d2e6263c MS |
1507 | for (i = 0; i < nmethcalls; i++) |
1508 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1509 | { | |
1510 | if (methcalls[i].stop_at != NULL) | |
1511 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1512 | pc, new_pc); | |
1513 | else | |
1514 | return 0; | |
b81654f1 | 1515 | } |
d2e6263c | 1516 | |
b81654f1 MS |
1517 | return 0; |
1518 | } | |
1519 | ||
0df8b418 MS |
1520 | /* -Wmissing-prototypes */ |
1521 | extern initialize_file_ftype _initialize_objc_language; | |
b9362cc7 | 1522 | |
b81654f1 MS |
1523 | void |
1524 | _initialize_objc_language (void) | |
1525 | { | |
1526 | add_language (&objc_language_defn); | |
d2e6263c | 1527 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1bedd215 | 1528 | _("All Objective-C selectors, or those matching REGEXP.")); |
d2e6263c | 1529 | add_info ("classes", classes_info, /* INFO CLASSES command. */ |
1bedd215 | 1530 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1531 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1532 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1533 | add_com_alias ("po", "print-object", class_vars, 1); |
1534 | } | |
1535 | ||
b81654f1 | 1536 | static void |
e17a4113 UW |
1537 | read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1538 | struct objc_method *method) | |
b81654f1 | 1539 | { |
e17a4113 | 1540 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1541 | |
e17a4113 UW |
1542 | method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order); |
1543 | method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1544 | method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
b81654f1 MS |
1545 | } |
1546 | ||
e17a4113 UW |
1547 | static unsigned long |
1548 | read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr) | |
b81654f1 | 1549 | { |
e17a4113 | 1550 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1551 | |
e17a4113 | 1552 | return read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1553 | } |
1554 | ||
1555 | static void | |
e17a4113 UW |
1556 | read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1557 | unsigned long num, struct objc_method *method) | |
b81654f1 | 1558 | { |
e17a4113 UW |
1559 | gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr)); |
1560 | read_objc_method (gdbarch, addr + 8 + (12 * num), method); | |
b81654f1 MS |
1561 | } |
1562 | ||
1563 | static void | |
e17a4113 UW |
1564 | read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr, |
1565 | struct objc_object *object) | |
b81654f1 | 1566 | { |
e17a4113 | 1567 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1568 | |
e17a4113 | 1569 | object->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
b81654f1 MS |
1570 | } |
1571 | ||
1572 | static void | |
e17a4113 UW |
1573 | read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr, |
1574 | struct objc_super *super) | |
b81654f1 | 1575 | { |
e17a4113 | 1576 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1577 | |
e17a4113 UW |
1578 | super->receiver = read_memory_unsigned_integer (addr, 4, byte_order); |
1579 | super->class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
b81654f1 MS |
1580 | }; |
1581 | ||
1582 | static void | |
e17a4113 UW |
1583 | read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr, |
1584 | struct objc_class *class) | |
b81654f1 | 1585 | { |
e17a4113 | 1586 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1587 | |
e17a4113 UW |
1588 | class->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
1589 | class->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1590 | class->name = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1591 | class->version = read_memory_unsigned_integer (addr + 12, 4, byte_order); | |
1592 | class->info = read_memory_unsigned_integer (addr + 16, 4, byte_order); | |
0df8b418 MS |
1593 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4, |
1594 | byte_order); | |
e17a4113 UW |
1595 | class->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order); |
1596 | class->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order); | |
1597 | class->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order); | |
1598 | class->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order); | |
b81654f1 MS |
1599 | } |
1600 | ||
b9362cc7 | 1601 | static CORE_ADDR |
e17a4113 UW |
1602 | find_implementation_from_class (struct gdbarch *gdbarch, |
1603 | CORE_ADDR class, CORE_ADDR sel) | |
b81654f1 | 1604 | { |
e17a4113 | 1605 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
b81654f1 MS |
1606 | CORE_ADDR subclass = class; |
1607 | ||
d2e6263c MS |
1608 | while (subclass != 0) |
1609 | { | |
b81654f1 | 1610 | |
d2e6263c MS |
1611 | struct objc_class class_str; |
1612 | unsigned mlistnum = 0; | |
b81654f1 | 1613 | |
e17a4113 | 1614 | read_objc_class (gdbarch, subclass, &class_str); |
b81654f1 | 1615 | |
d2e6263c MS |
1616 | for (;;) |
1617 | { | |
1618 | CORE_ADDR mlist; | |
1619 | unsigned long nmethods; | |
1620 | unsigned long i; | |
b81654f1 | 1621 | |
d2e6263c | 1622 | mlist = read_memory_unsigned_integer (class_str.methods + |
e17a4113 UW |
1623 | (4 * mlistnum), |
1624 | 4, byte_order); | |
d2e6263c MS |
1625 | if (mlist == 0) |
1626 | break; | |
b81654f1 | 1627 | |
e17a4113 | 1628 | nmethods = read_objc_methlist_nmethods (gdbarch, mlist); |
b81654f1 | 1629 | |
d2e6263c MS |
1630 | for (i = 0; i < nmethods; i++) |
1631 | { | |
1632 | struct objc_method meth_str; | |
b81654f1 | 1633 | |
5cc80db3 | 1634 | read_objc_methlist_method (gdbarch, mlist, i, &meth_str); |
b81654f1 | 1635 | #if 0 |
d2e6263c MS |
1636 | fprintf (stderr, |
1637 | "checking method 0x%lx against selector 0x%lx\n", | |
1638 | meth_str.name, sel); | |
b81654f1 MS |
1639 | #endif |
1640 | ||
d2e6263c | 1641 | if (meth_str.name == sel) |
1abf022c | 1642 | /* FIXME: hppa arch was doing a pointer dereference |
0df8b418 | 1643 | here. There needs to be a better way to do that. */ |
1abf022c | 1644 | return meth_str.imp; |
d2e6263c MS |
1645 | } |
1646 | mlistnum++; | |
b81654f1 | 1647 | } |
d2e6263c | 1648 | subclass = class_str.super_class; |
b81654f1 | 1649 | } |
b81654f1 MS |
1650 | |
1651 | return 0; | |
1652 | } | |
1653 | ||
b9362cc7 | 1654 | static CORE_ADDR |
e17a4113 UW |
1655 | find_implementation (struct gdbarch *gdbarch, |
1656 | CORE_ADDR object, CORE_ADDR sel) | |
b81654f1 MS |
1657 | { |
1658 | struct objc_object ostr; | |
1659 | ||
d2e6263c MS |
1660 | if (object == 0) |
1661 | return 0; | |
e17a4113 | 1662 | read_objc_object (gdbarch, object, &ostr); |
d2e6263c MS |
1663 | if (ostr.isa == 0) |
1664 | return 0; | |
b81654f1 | 1665 | |
e17a4113 | 1666 | return find_implementation_from_class (gdbarch, ostr.isa, sel); |
b81654f1 MS |
1667 | } |
1668 | ||
1669 | static int | |
1670 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1671 | { | |
5ed92fa8 UW |
1672 | struct frame_info *frame = get_current_frame (); |
1673 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1674 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1675 | ||
b81654f1 MS |
1676 | CORE_ADDR object; |
1677 | CORE_ADDR sel; | |
1678 | CORE_ADDR res; | |
1679 | ||
5ed92fa8 UW |
1680 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1681 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1682 | |
e17a4113 | 1683 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1684 | if (new_pc != 0) |
1685 | *new_pc = res; | |
1686 | if (res == 0) | |
1687 | return 1; | |
b81654f1 MS |
1688 | return 0; |
1689 | } | |
1690 | ||
1691 | static int | |
1692 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1693 | { | |
5ed92fa8 UW |
1694 | struct frame_info *frame = get_current_frame (); |
1695 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1696 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1697 | ||
b81654f1 MS |
1698 | CORE_ADDR object; |
1699 | CORE_ADDR sel; | |
1700 | CORE_ADDR res; | |
1701 | ||
5ed92fa8 UW |
1702 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1703 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1704 | |
e17a4113 | 1705 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1706 | if (new_pc != 0) |
1707 | *new_pc = res; | |
1708 | if (res == 0) | |
1709 | return 1; | |
b81654f1 MS |
1710 | return 0; |
1711 | } | |
1712 | ||
1713 | static int | |
1714 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1715 | { | |
5ed92fa8 UW |
1716 | struct frame_info *frame = get_current_frame (); |
1717 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1718 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1719 | ||
b81654f1 MS |
1720 | struct objc_super sstr; |
1721 | ||
1722 | CORE_ADDR super; | |
1723 | CORE_ADDR sel; | |
1724 | CORE_ADDR res; | |
1725 | ||
5ed92fa8 UW |
1726 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1727 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1728 | |
e17a4113 | 1729 | read_objc_super (gdbarch, super, &sstr); |
d2e6263c MS |
1730 | if (sstr.class == 0) |
1731 | return 0; | |
b81654f1 | 1732 | |
e17a4113 | 1733 | res = find_implementation_from_class (gdbarch, sstr.class, sel); |
d2e6263c MS |
1734 | if (new_pc != 0) |
1735 | *new_pc = res; | |
1736 | if (res == 0) | |
1737 | return 1; | |
b81654f1 MS |
1738 | return 0; |
1739 | } | |
1740 | ||
1741 | static int | |
1742 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1743 | { | |
5ed92fa8 UW |
1744 | struct frame_info *frame = get_current_frame (); |
1745 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1746 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1747 | ||
b81654f1 MS |
1748 | struct objc_super sstr; |
1749 | ||
1750 | CORE_ADDR super; | |
1751 | CORE_ADDR sel; | |
1752 | CORE_ADDR res; | |
1753 | ||
5ed92fa8 UW |
1754 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1755 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1756 | |
e17a4113 | 1757 | read_objc_super (gdbarch, super, &sstr); |
d2e6263c MS |
1758 | if (sstr.class == 0) |
1759 | return 0; | |
b81654f1 | 1760 | |
e17a4113 | 1761 | res = find_implementation_from_class (gdbarch, sstr.class, sel); |
d2e6263c MS |
1762 | if (new_pc != 0) |
1763 | *new_pc = res; | |
1764 | if (res == 0) | |
1765 | return 1; | |
b81654f1 MS |
1766 | return 0; |
1767 | } | |
57a9e6af PP |
1768 | |
1769 | void | |
1770 | _initialize_objc_lang (void) | |
1771 | { | |
1772 | objc_objfile_data = register_objfile_data (); | |
1773 | } |