Commit | Line | Data |
---|---|---|
d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
7b6bb8da | 3 | Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011 |
9b254dd1 | 4 | Free Software Foundation, Inc. |
b81654f1 | 5 | |
437666f8 AC |
6 | Contributed by Apple Computer, Inc. |
7 | Written by Michael Snyder. | |
b81654f1 | 8 | |
437666f8 | 9 | This file is part of GDB. |
b81654f1 | 10 | |
437666f8 AC |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
437666f8 AC |
14 | (at your option) any later version. |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
b81654f1 MS |
23 | |
24 | #include "defs.h" | |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "expression.h" | |
28 | #include "parser-defs.h" | |
29 | #include "language.h" | |
d2e6263c | 30 | #include "c-lang.h" |
b81654f1 | 31 | #include "objc-lang.h" |
60250e8b | 32 | #include "exceptions.h" |
b81654f1 MS |
33 | #include "complaints.h" |
34 | #include "value.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
7248f48e | 37 | #include "gdb_string.h" /* for strchr */ |
b81654f1 MS |
38 | #include "target.h" /* for target_has_execution */ |
39 | #include "gdbcore.h" | |
40 | #include "gdbcmd.h" | |
41 | #include "frame.h" | |
42 | #include "gdb_regex.h" | |
43 | #include "regcache.h" | |
fe898f56 | 44 | #include "block.h" |
04714b91 | 45 | #include "infcall.h" |
4e45ca2e | 46 | #include "valprint.h" |
e8f3fcdd | 47 | #include "gdb_assert.h" |
b81654f1 MS |
48 | |
49 | #include <ctype.h> | |
50 | ||
51 | struct objc_object { | |
52 | CORE_ADDR isa; | |
53 | }; | |
54 | ||
55 | struct objc_class { | |
56 | CORE_ADDR isa; | |
57 | CORE_ADDR super_class; | |
58 | CORE_ADDR name; | |
59 | long version; | |
60 | long info; | |
61 | long instance_size; | |
62 | CORE_ADDR ivars; | |
63 | CORE_ADDR methods; | |
64 | CORE_ADDR cache; | |
65 | CORE_ADDR protocols; | |
66 | }; | |
67 | ||
68 | struct objc_super { | |
69 | CORE_ADDR receiver; | |
70 | CORE_ADDR class; | |
71 | }; | |
72 | ||
73 | struct objc_method { | |
74 | CORE_ADDR name; | |
75 | CORE_ADDR types; | |
76 | CORE_ADDR imp; | |
77 | }; | |
78 | ||
57a9e6af PP |
79 | static const struct objfile_data *objc_objfile_data; |
80 | ||
d2e6263c MS |
81 | /* Lookup a structure type named "struct NAME", visible in lexical |
82 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
83 | suitably defined. */ | |
b81654f1 MS |
84 | |
85 | struct symbol * | |
86 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
87 | { | |
f86f5ca3 | 88 | struct symbol *sym; |
b81654f1 | 89 | |
2570f2b7 | 90 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
b81654f1 MS |
91 | |
92 | if (sym == NULL) | |
93 | { | |
94 | if (noerr) | |
95 | return 0; | |
96 | else | |
8a3fe4f8 | 97 | error (_("No struct type named %s."), name); |
b81654f1 MS |
98 | } |
99 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
100 | { | |
101 | if (noerr) | |
102 | return 0; | |
103 | else | |
8a3fe4f8 | 104 | error (_("This context has class, union or enum %s, not a struct."), |
d2e6263c | 105 | name); |
b81654f1 MS |
106 | } |
107 | return sym; | |
108 | } | |
109 | ||
110 | CORE_ADDR | |
3b7538c0 | 111 | lookup_objc_class (struct gdbarch *gdbarch, char *classname) |
b81654f1 | 112 | { |
3b7538c0 | 113 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
114 | struct value * function, *classval; |
115 | ||
116 | if (! target_has_execution) | |
117 | { | |
d2e6263c | 118 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
119 | return 0; |
120 | } | |
121 | ||
122 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
3e3b026f | 123 | function = find_function_in_inferior("objc_lookUpClass", NULL); |
b81654f1 | 124 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) |
3e3b026f | 125 | function = find_function_in_inferior("objc_lookup_class", NULL); |
b81654f1 MS |
126 | else |
127 | { | |
0df8b418 MS |
128 | complaint (&symfile_complaints, |
129 | _("no way to lookup Objective-C classes")); | |
b81654f1 MS |
130 | return 0; |
131 | } | |
132 | ||
3b7538c0 | 133 | classval = value_string (classname, strlen (classname) + 1, char_type); |
b81654f1 MS |
134 | classval = value_coerce_array (classval); |
135 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
136 | 1, &classval)); | |
137 | } | |
138 | ||
c253954e | 139 | CORE_ADDR |
3b7538c0 | 140 | lookup_child_selector (struct gdbarch *gdbarch, char *selname) |
b81654f1 | 141 | { |
3b7538c0 | 142 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
143 | struct value * function, *selstring; |
144 | ||
145 | if (! target_has_execution) | |
146 | { | |
d2e6263c | 147 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
148 | return 0; |
149 | } | |
150 | ||
151 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
3e3b026f | 152 | function = find_function_in_inferior("sel_getUid", NULL); |
b81654f1 | 153 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) |
3e3b026f | 154 | function = find_function_in_inferior("sel_get_any_uid", NULL); |
b81654f1 MS |
155 | else |
156 | { | |
0df8b418 MS |
157 | complaint (&symfile_complaints, |
158 | _("no way to lookup Objective-C selectors")); | |
b81654f1 MS |
159 | return 0; |
160 | } | |
161 | ||
d2e6263c | 162 | selstring = value_coerce_array (value_string (selname, |
0df8b418 MS |
163 | strlen (selname) + 1, |
164 | char_type)); | |
b81654f1 MS |
165 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
166 | } | |
167 | ||
168 | struct value * | |
3b7538c0 | 169 | value_nsstring (struct gdbarch *gdbarch, char *ptr, int len) |
b81654f1 | 170 | { |
3b7538c0 | 171 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
172 | struct value *stringValue[3]; |
173 | struct value *function, *nsstringValue; | |
174 | struct symbol *sym; | |
175 | struct type *type; | |
176 | ||
177 | if (!target_has_execution) | |
d2e6263c | 178 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 | 179 | |
3b7538c0 | 180 | stringValue[2] = value_string(ptr, len, char_type); |
b81654f1 | 181 | stringValue[2] = value_coerce_array(stringValue[2]); |
d2e6263c | 182 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
183 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
184 | { | |
3b7538c0 | 185 | function = find_function_in_inferior("_NSNewStringFromCString", NULL); |
b81654f1 MS |
186 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
187 | } | |
188 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
189 | { | |
3b7538c0 | 190 | function = find_function_in_inferior("istr", NULL); |
b81654f1 MS |
191 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
192 | } | |
193 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
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:")); |
b81654f1 MS |
203 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); |
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 | { | |
231 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
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 | ||
d2e6263c MS |
286 | /* Print the character C on STREAM as part of the contents of a |
287 | literal string whose delimiter is QUOTER. Note that that format | |
288 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
289 | |
290 | static void | |
6c7a06a3 | 291 | objc_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
b81654f1 | 292 | { |
d2e6263c | 293 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
294 | |
295 | if (PRINT_LITERAL_FORM (c)) | |
296 | { | |
297 | if (c == '\\' || c == quoter) | |
298 | { | |
299 | fputs_filtered ("\\", stream); | |
300 | } | |
301 | fprintf_filtered (stream, "%c", c); | |
302 | } | |
303 | else | |
304 | { | |
305 | switch (c) | |
306 | { | |
307 | case '\n': | |
308 | fputs_filtered ("\\n", stream); | |
309 | break; | |
310 | case '\b': | |
311 | fputs_filtered ("\\b", stream); | |
312 | break; | |
313 | case '\t': | |
314 | fputs_filtered ("\\t", stream); | |
315 | break; | |
316 | case '\f': | |
317 | fputs_filtered ("\\f", stream); | |
318 | break; | |
319 | case '\r': | |
320 | fputs_filtered ("\\r", stream); | |
321 | break; | |
322 | case '\033': | |
323 | fputs_filtered ("\\e", stream); | |
324 | break; | |
325 | case '\007': | |
326 | fputs_filtered ("\\a", stream); | |
327 | break; | |
328 | default: | |
329 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
330 | break; | |
331 | } | |
332 | } | |
333 | } | |
334 | ||
335 | static void | |
6c7a06a3 | 336 | objc_printchar (int c, struct type *type, struct ui_file *stream) |
b81654f1 MS |
337 | { |
338 | fputs_filtered ("'", stream); | |
6c7a06a3 | 339 | objc_emit_char (c, type, stream, '\''); |
b81654f1 MS |
340 | fputs_filtered ("'", stream); |
341 | } | |
342 | ||
d2e6263c MS |
343 | /* Print the character string STRING, printing at most LENGTH |
344 | characters. Printing stops early if the number hits print_max; | |
345 | repeat counts are printed as appropriate. Print ellipses at the | |
346 | end if we had to stop before printing LENGTH characters, or if | |
347 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
348 | |
349 | static void | |
6c7a06a3 TT |
350 | objc_printstr (struct ui_file *stream, struct type *type, |
351 | const gdb_byte *string, unsigned int length, | |
be759fcf | 352 | const char *encoding, int force_ellipses, |
79a45b7d | 353 | const struct value_print_options *options) |
b81654f1 | 354 | { |
f86f5ca3 | 355 | unsigned int i; |
b81654f1 MS |
356 | unsigned int things_printed = 0; |
357 | int in_quotes = 0; | |
358 | int need_comma = 0; | |
b81654f1 MS |
359 | |
360 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
361 | the last byte of it is a null, we don't print that, in |
362 | traditional C style. */ | |
b81654f1 MS |
363 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
364 | length--; | |
365 | ||
366 | if (length == 0) | |
367 | { | |
368 | fputs_filtered ("\"\"", stream); | |
369 | return; | |
370 | } | |
371 | ||
79a45b7d | 372 | for (i = 0; i < length && things_printed < options->print_max; ++i) |
b81654f1 | 373 | { |
d2e6263c MS |
374 | /* Position of the character we are examining to see whether it |
375 | is repeated. */ | |
b81654f1 MS |
376 | unsigned int rep1; |
377 | /* Number of repetitions we have detected so far. */ | |
378 | unsigned int reps; | |
379 | ||
380 | QUIT; | |
381 | ||
382 | if (need_comma) | |
383 | { | |
384 | fputs_filtered (", ", stream); | |
385 | need_comma = 0; | |
386 | } | |
387 | ||
388 | rep1 = i + 1; | |
389 | reps = 1; | |
390 | while (rep1 < length && string[rep1] == string[i]) | |
391 | { | |
392 | ++rep1; | |
393 | ++reps; | |
394 | } | |
395 | ||
79a45b7d | 396 | if (reps > options->repeat_count_threshold) |
b81654f1 MS |
397 | { |
398 | if (in_quotes) | |
399 | { | |
79a45b7d | 400 | if (options->inspect_it) |
b81654f1 MS |
401 | fputs_filtered ("\\\", ", stream); |
402 | else | |
403 | fputs_filtered ("\", ", stream); | |
404 | in_quotes = 0; | |
405 | } | |
6c7a06a3 | 406 | objc_printchar (string[i], type, stream); |
b81654f1 MS |
407 | fprintf_filtered (stream, " <repeats %u times>", reps); |
408 | i = rep1 - 1; | |
79a45b7d | 409 | things_printed += options->repeat_count_threshold; |
b81654f1 MS |
410 | need_comma = 1; |
411 | } | |
412 | else | |
413 | { | |
414 | if (!in_quotes) | |
415 | { | |
79a45b7d | 416 | if (options->inspect_it) |
b81654f1 MS |
417 | fputs_filtered ("\\\"", stream); |
418 | else | |
419 | fputs_filtered ("\"", stream); | |
420 | in_quotes = 1; | |
421 | } | |
6c7a06a3 | 422 | objc_emit_char (string[i], type, stream, '"'); |
b81654f1 MS |
423 | ++things_printed; |
424 | } | |
425 | } | |
426 | ||
427 | /* Terminate the quotes if necessary. */ | |
428 | if (in_quotes) | |
429 | { | |
79a45b7d | 430 | if (options->inspect_it) |
b81654f1 MS |
431 | fputs_filtered ("\\\"", stream); |
432 | else | |
433 | fputs_filtered ("\"", stream); | |
434 | } | |
435 | ||
436 | if (force_ellipses || i < length) | |
437 | fputs_filtered ("...", stream); | |
438 | } | |
439 | ||
f636b87d AF |
440 | /* Determine if we are currently in the Objective-C dispatch function. |
441 | If so, get the address of the method function that the dispatcher | |
0df8b418 | 442 | would call and use that as the function to step into instead. Also |
f636b87d AF |
443 | skip over the trampoline for the function (if any). This is better |
444 | for the user since they are only interested in stepping into the | |
445 | method function anyway. */ | |
446 | static CORE_ADDR | |
52f729a7 | 447 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
f636b87d | 448 | { |
d80b854b | 449 | struct gdbarch *gdbarch = get_frame_arch (frame); |
f636b87d AF |
450 | CORE_ADDR real_stop_pc; |
451 | CORE_ADDR method_stop_pc; | |
452 | ||
d80b854b | 453 | real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc); |
f636b87d AF |
454 | |
455 | if (real_stop_pc != 0) | |
456 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
457 | else | |
458 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
459 | ||
460 | if (method_stop_pc) | |
461 | { | |
e76f05fa | 462 | real_stop_pc = gdbarch_skip_trampoline_code |
d80b854b | 463 | (gdbarch, frame, method_stop_pc); |
f636b87d AF |
464 | if (real_stop_pc == 0) |
465 | real_stop_pc = method_stop_pc; | |
466 | } | |
467 | ||
468 | return real_stop_pc; | |
469 | } | |
470 | ||
b81654f1 MS |
471 | |
472 | /* Table mapping opcodes into strings for printing operators | |
473 | and precedences of the operators. */ | |
474 | ||
475 | static const struct op_print objc_op_print_tab[] = | |
476 | { | |
477 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
478 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
479 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
480 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
481 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
482 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
483 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
484 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
485 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
486 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
487 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
488 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
489 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
490 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
491 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
492 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
493 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
494 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
495 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
496 | {"%", BINOP_REM, PREC_MUL, 0}, | |
497 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
498 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
499 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
500 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
501 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
502 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
503 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
504 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
505 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 506 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
507 | }; |
508 | ||
b81654f1 | 509 | const struct language_defn objc_language_defn = { |
d2e6263c | 510 | "objective-c", /* Language name */ |
b81654f1 | 511 | language_objc, |
b81654f1 MS |
512 | range_check_off, |
513 | type_check_off, | |
514 | case_sensitive_on, | |
7ca2d3a3 | 515 | array_row_major, |
9a044a89 | 516 | macro_expansion_c, |
5f9769d1 | 517 | &exp_descriptor_standard, |
b81654f1 MS |
518 | objc_parse, |
519 | objc_error, | |
e85c3284 | 520 | null_post_parser, |
b81654f1 MS |
521 | objc_printchar, /* Print a character constant */ |
522 | objc_printstr, /* Function to print string constant */ | |
523 | objc_emit_char, | |
b81654f1 | 524 | c_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 525 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
b81654f1 MS |
526 | c_val_print, /* Print a value using appropriate syntax */ |
527 | c_value_print, /* Print a top-level value */ | |
f636b87d | 528 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
2b2d9e11 | 529 | "self", /* name_of_this */ |
5f9a71c3 | 530 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
b368761e | 531 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 532 | objc_demangle, /* Language specific symbol demangler */ |
0df8b418 MS |
533 | NULL, /* Language specific |
534 | class_name_from_physname */ | |
d2e6263c MS |
535 | objc_op_print_tab, /* Expression operators for printing */ |
536 | 1, /* C-style arrays */ | |
b81654f1 | 537 | 0, /* String lower bound */ |
6084f43a | 538 | default_word_break_characters, |
41d27058 | 539 | default_make_symbol_completion_list, |
cad351d1 | 540 | c_language_arch_info, |
e79af960 | 541 | default_print_array_index, |
41f1b697 | 542 | default_pass_by_reference, |
ae6a3a4c | 543 | default_get_string, |
b81654f1 MS |
544 | LANG_MAGIC |
545 | }; | |
546 | ||
547 | /* | |
548 | * ObjC: | |
0df8b418 | 549 | * Following functions help construct Objective-C message calls. |
b81654f1 MS |
550 | */ |
551 | ||
d2e6263c | 552 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
553 | { |
554 | struct selname *next; | |
555 | char *msglist_sel; | |
556 | int msglist_len; | |
557 | }; | |
558 | ||
559 | static int msglist_len; | |
560 | static struct selname *selname_chain; | |
561 | static char *msglist_sel; | |
562 | ||
563 | void | |
564 | start_msglist(void) | |
565 | { | |
f86f5ca3 | 566 | struct selname *new = |
b81654f1 MS |
567 | (struct selname *) xmalloc (sizeof (struct selname)); |
568 | ||
569 | new->next = selname_chain; | |
570 | new->msglist_len = msglist_len; | |
571 | new->msglist_sel = msglist_sel; | |
572 | msglist_len = 0; | |
573 | msglist_sel = (char *)xmalloc(1); | |
574 | *msglist_sel = 0; | |
575 | selname_chain = new; | |
576 | } | |
577 | ||
578 | void | |
579 | add_msglist(struct stoken *str, int addcolon) | |
580 | { | |
581 | char *s, *p; | |
582 | int len, plen; | |
583 | ||
5cc80db3 MS |
584 | if (str == 0) /* Unnamed arg, or... */ |
585 | { | |
586 | if (addcolon == 0) /* variable number of args. */ | |
587 | { | |
588 | msglist_len++; | |
589 | return; | |
590 | } | |
591 | p = ""; | |
592 | plen = 0; | |
593 | } | |
594 | else | |
595 | { | |
596 | p = str->ptr; | |
597 | plen = str->length; | |
b81654f1 | 598 | } |
b81654f1 MS |
599 | len = plen + strlen(msglist_sel) + 2; |
600 | s = (char *)xmalloc(len); | |
601 | strcpy(s, msglist_sel); | |
602 | strncat(s, p, plen); | |
7248f48e | 603 | xfree(msglist_sel); |
b81654f1 | 604 | msglist_sel = s; |
5cc80db3 MS |
605 | if (addcolon) |
606 | { | |
607 | s[len-2] = ':'; | |
608 | s[len-1] = 0; | |
609 | msglist_len++; | |
610 | } | |
611 | else | |
b81654f1 MS |
612 | s[len-2] = '\0'; |
613 | } | |
614 | ||
615 | int | |
616 | end_msglist(void) | |
617 | { | |
f86f5ca3 PH |
618 | int val = msglist_len; |
619 | struct selname *sel = selname_chain; | |
620 | char *p = msglist_sel; | |
c253954e | 621 | CORE_ADDR selid; |
b81654f1 MS |
622 | |
623 | selname_chain = sel->next; | |
624 | msglist_len = sel->msglist_len; | |
625 | msglist_sel = sel->msglist_sel; | |
3b7538c0 | 626 | selid = lookup_child_selector (parse_gdbarch, p); |
b81654f1 | 627 | if (!selid) |
8a3fe4f8 | 628 | error (_("Can't find selector \"%s\""), p); |
b81654f1 | 629 | write_exp_elt_longcst (selid); |
7248f48e | 630 | xfree(p); |
d2e6263c | 631 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 632 | xfree(sel); |
b81654f1 MS |
633 | |
634 | return val; | |
635 | } | |
636 | ||
637 | /* | |
638 | * Function: specialcmp (char *a, char *b) | |
639 | * | |
640 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 641 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
642 | */ |
643 | ||
b9362cc7 AC |
644 | static int |
645 | specialcmp (char *a, char *b) | |
b81654f1 MS |
646 | { |
647 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
648 | { | |
649 | if (*a != *b) | |
650 | return *a - *b; | |
651 | a++, b++; | |
652 | } | |
653 | if (*a && *a != ' ' && *a != ']') | |
0df8b418 | 654 | return 1; /* a is longer therefore greater. */ |
b81654f1 | 655 | if (*b && *b != ' ' && *b != ']') |
0df8b418 MS |
656 | return -1; /* a is shorter therefore lesser. */ |
657 | return 0; /* a and b are identical. */ | |
b81654f1 MS |
658 | } |
659 | ||
660 | /* | |
36e53c63 | 661 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 662 | * |
d2e6263c MS |
663 | * Comparison function for use with qsort. Arguments are symbols or |
664 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
665 | */ |
666 | ||
667 | static int | |
36e53c63 | 668 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
669 | { |
670 | char *aname, *bname; | |
671 | ||
de5ad195 DC |
672 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
673 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 674 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 675 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 676 | |
7248f48e AF |
677 | aname = strchr(aname, ' '); |
678 | bname = strchr(bname, ' '); | |
679 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 680 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
681 | |
682 | return specialcmp (aname+1, bname+1); | |
683 | } | |
684 | ||
685 | /* | |
686 | * Function: selectors_info (regexp, from_tty) | |
687 | * | |
d2e6263c MS |
688 | * Implements the "Info selectors" command. Takes an optional regexp |
689 | * arg. Lists all objective c selectors that match the regexp. Works | |
690 | * by grepping thru all symbols for objective c methods. Output list | |
691 | * is sorted and uniqued. | |
b81654f1 MS |
692 | */ |
693 | ||
694 | static void | |
695 | selectors_info (char *regexp, int from_tty) | |
696 | { | |
697 | struct objfile *objfile; | |
698 | struct minimal_symbol *msymbol; | |
699 | char *name; | |
700 | char *val; | |
701 | int matches = 0; | |
702 | int maxlen = 0; | |
703 | int ix; | |
704 | char myregexp[2048]; | |
705 | char asel[256]; | |
706 | struct symbol **sym_arr; | |
707 | int plusminus = 0; | |
708 | ||
709 | if (regexp == NULL) | |
d2e6263c | 710 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
711 | else |
712 | { | |
d2e6263c MS |
713 | if (*regexp == '+' || *regexp == '-') |
714 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
715 | plusminus = *regexp++; |
716 | while (*regexp == ' ' || *regexp == '\t') | |
717 | regexp++; | |
718 | } | |
719 | if (*regexp == '\0') | |
720 | strcpy(myregexp, ".*]"); | |
721 | else | |
722 | { | |
a9dc8dcc | 723 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 | 724 | if (sizeof (myregexp) < strlen (regexp) + 4) |
20937029 JK |
725 | error (_("Regexp is too long: %s"), regexp); |
726 | strcpy(myregexp, regexp); | |
b81654f1 MS |
727 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ |
728 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
729 | else | |
730 | strcat(myregexp, ".*]"); | |
731 | } | |
732 | } | |
733 | ||
734 | if (regexp != NULL) | |
5e488a7b AC |
735 | { |
736 | val = re_comp (myregexp); | |
737 | if (val != 0) | |
8a3fe4f8 | 738 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 739 | } |
b81654f1 | 740 | |
d2e6263c | 741 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
742 | ALL_MSYMBOLS (objfile, msymbol) |
743 | { | |
744 | QUIT; | |
36018d2e | 745 | name = SYMBOL_NATURAL_NAME (msymbol); |
3e6ef9e4 JB |
746 | if (name |
747 | && (name[0] == '-' || name[0] == '+') | |
748 | && name[1] == '[') /* Got a method name. */ | |
b81654f1 | 749 | { |
d2e6263c | 750 | /* Filter for class/instance methods. */ |
b81654f1 | 751 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
752 | continue; |
753 | /* Find selector part. */ | |
3e6ef9e4 | 754 | name = (char *) strchr (name+2, ' '); |
50412521 MS |
755 | if (name == NULL) |
756 | { | |
757 | complaint (&symfile_complaints, | |
758 | _("Bad method name '%s'"), | |
759 | SYMBOL_NATURAL_NAME (msymbol)); | |
760 | continue; | |
761 | } | |
b81654f1 MS |
762 | if (regexp == NULL || re_exec(++name) != 0) |
763 | { | |
764 | char *mystart = name; | |
3e6ef9e4 | 765 | char *myend = (char *) strchr (mystart, ']'); |
b81654f1 MS |
766 | |
767 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 768 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
769 | matches++; |
770 | } | |
771 | } | |
772 | } | |
773 | if (matches) | |
774 | { | |
a3f17187 | 775 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
776 | regexp ? regexp : "*"); |
777 | ||
778 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
779 | matches = 0; | |
780 | ALL_MSYMBOLS (objfile, msymbol) | |
781 | { | |
782 | QUIT; | |
36018d2e | 783 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
784 | if (name && |
785 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 786 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 787 | { |
d2e6263c | 788 | /* Filter for class/instance methods. */ |
b81654f1 | 789 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
790 | continue; |
791 | /* Find selector part. */ | |
792 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
793 | if (regexp == NULL || re_exec(++name) != 0) |
794 | sym_arr[matches++] = (struct symbol *) msymbol; | |
795 | } | |
796 | } | |
797 | ||
798 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
799 | compare_selectors); | |
d2e6263c MS |
800 | /* Prevent compare on first iteration. */ |
801 | asel[0] = 0; | |
802 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
803 | { |
804 | char *p = asel; | |
805 | ||
806 | QUIT; | |
36018d2e | 807 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
808 | name = strchr (name, ' ') + 1; |
809 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 810 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 811 | |
d2e6263c MS |
812 | /* Copy selector part. */ |
813 | while (*name && *name != ']') | |
b81654f1 MS |
814 | *p++ = *name++; |
815 | *p++ = '\0'; | |
d2e6263c MS |
816 | /* Print in columns. */ |
817 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
818 | } |
819 | begin_line(); | |
820 | } | |
821 | else | |
0df8b418 MS |
822 | printf_filtered (_("No selectors matching \"%s\"\n"), |
823 | regexp ? regexp : "*"); | |
b81654f1 MS |
824 | } |
825 | ||
826 | /* | |
36e53c63 | 827 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 828 | * |
d2e6263c MS |
829 | * Comparison function for use with qsort. Arguments are symbols or |
830 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
831 | */ |
832 | ||
833 | static int | |
36e53c63 | 834 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
835 | { |
836 | char *aname, *bname; | |
837 | ||
de5ad195 DC |
838 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
839 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 840 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 841 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
842 | |
843 | return specialcmp (aname+1, bname+1); | |
844 | } | |
845 | ||
846 | /* | |
847 | * Function: classes_info(regexp, from_tty) | |
848 | * | |
849 | * Implements the "info classes" command for objective c classes. | |
850 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
851 | * Works by grepping thru the list of objective c methods. List will |
852 | * be sorted and uniqued (since one class may have many methods). | |
853 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
854 | */ |
855 | ||
856 | static void | |
857 | classes_info (char *regexp, int from_tty) | |
858 | { | |
859 | struct objfile *objfile; | |
860 | struct minimal_symbol *msymbol; | |
861 | char *name; | |
862 | char *val; | |
863 | int matches = 0; | |
864 | int maxlen = 0; | |
865 | int ix; | |
866 | char myregexp[2048]; | |
867 | char aclass[256]; | |
868 | struct symbol **sym_arr; | |
869 | ||
870 | if (regexp == NULL) | |
d2e6263c | 871 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
872 | else |
873 | { | |
a9dc8dcc | 874 | /* Allow a few extra bytes because of the strcat below. */ |
28288541 MS |
875 | if (sizeof (myregexp) < strlen (regexp) + 4) |
876 | error (_("Regexp is too long: %s"), regexp); | |
b81654f1 MS |
877 | strcpy(myregexp, regexp); |
878 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 879 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
880 | myregexp[strlen(myregexp) - 1] = ' '; |
881 | else | |
882 | strcat(myregexp, ".* "); | |
883 | } | |
884 | ||
885 | if (regexp != NULL) | |
5e488a7b AC |
886 | { |
887 | val = re_comp (myregexp); | |
888 | if (val != 0) | |
8a3fe4f8 | 889 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 890 | } |
b81654f1 | 891 | |
d2e6263c | 892 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
893 | ALL_MSYMBOLS (objfile, msymbol) |
894 | { | |
895 | QUIT; | |
36018d2e | 896 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
897 | if (name && |
898 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 899 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
900 | if (regexp == NULL || re_exec(name+2) != 0) |
901 | { | |
d2e6263c MS |
902 | /* Compute length of classname part. */ |
903 | char *mystart = name + 2; | |
b81654f1 MS |
904 | char *myend = (char *) strchr(mystart, ' '); |
905 | ||
906 | if (myend && (myend - mystart > maxlen)) | |
907 | maxlen = myend - mystart; | |
908 | matches++; | |
909 | } | |
910 | } | |
911 | if (matches) | |
912 | { | |
a3f17187 | 913 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 MS |
914 | regexp ? regexp : "*"); |
915 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
916 | matches = 0; | |
917 | ALL_MSYMBOLS (objfile, msymbol) | |
918 | { | |
919 | QUIT; | |
36018d2e | 920 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
921 | if (name && |
922 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 923 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
924 | if (regexp == NULL || re_exec(name+2) != 0) |
925 | sym_arr[matches++] = (struct symbol *) msymbol; | |
926 | } | |
927 | ||
928 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
929 | compare_classes); | |
d2e6263c MS |
930 | /* Prevent compare on first iteration. */ |
931 | aclass[0] = 0; | |
932 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
933 | { |
934 | char *p = aclass; | |
935 | ||
936 | QUIT; | |
36018d2e | 937 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
938 | name += 2; |
939 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 940 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 941 | |
d2e6263c MS |
942 | /* Copy class part of method name. */ |
943 | while (*name && *name != ' ') | |
b81654f1 MS |
944 | *p++ = *name++; |
945 | *p++ = '\0'; | |
d2e6263c MS |
946 | /* Print in columns. */ |
947 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
948 | } |
949 | begin_line(); | |
950 | } | |
951 | else | |
a3f17187 | 952 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
953 | } |
954 | ||
955 | /* | |
956 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
957 | * | |
958 | * Input: a string representing a selector | |
959 | * a pointer to an array of symbol pointers | |
960 | * possibly a pointer to a symbol found by the caller. | |
961 | * | |
d2e6263c MS |
962 | * Output: number of methods that implement that selector. Side |
963 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 964 | * |
d2e6263c MS |
965 | * By analogy with function "find_methods" (symtab.c), builds a list |
966 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
967 | * (symtab.c) can list them and ask the user to choose one or more. | |
968 | * In this case the matches are objective c methods | |
969 | * ("implementations") matching an objective c selector. | |
b81654f1 | 970 | * |
d2e6263c MS |
971 | * Note that it is possible for a normal (c-style) function to have |
972 | * the same name as an objective c selector. To prevent the selector | |
973 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
974 | * search for such a function first, and if it finds one, pass it in | |
975 | * to us. We will then integrate it into the list. We also search | |
976 | * for one here, among the minsyms. | |
b81654f1 | 977 | * |
d2e6263c MS |
978 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
979 | * into two parts: debuggable (struct symbol) syms, and | |
980 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
981 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
0df8b418 | 982 | * be the index of the first non-debuggable one). |
b81654f1 MS |
983 | */ |
984 | ||
985 | /* | |
986 | * Function: total_number_of_imps (char *selector); | |
987 | * | |
988 | * Input: a string representing a selector | |
989 | * Output: number of methods that implement that selector. | |
990 | * | |
d2e6263c | 991 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 992 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
993 | * matching the input, and to allocate an array of pointers to them |
994 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
995 | */ |
996 | ||
997 | char * | |
998 | parse_selector (char *method, char **selector) | |
999 | { | |
1000 | char *s1 = NULL; | |
1001 | char *s2 = NULL; | |
1002 | int found_quote = 0; | |
1003 | ||
1004 | char *nselector = NULL; | |
1005 | ||
e8f3fcdd | 1006 | gdb_assert (selector != NULL); |
b81654f1 MS |
1007 | |
1008 | s1 = method; | |
1009 | ||
1010 | while (isspace (*s1)) | |
1011 | s1++; | |
1012 | if (*s1 == '\'') | |
1013 | { | |
1014 | found_quote = 1; | |
1015 | s1++; | |
1016 | } | |
1017 | while (isspace (*s1)) | |
1018 | s1++; | |
1019 | ||
1020 | nselector = s1; | |
1021 | s2 = s1; | |
1022 | ||
5cc80db3 MS |
1023 | for (;;) |
1024 | { | |
1025 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1026 | *s1++ = *s2; | |
1027 | else if (isspace (*s2)) | |
1028 | ; | |
1029 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1030 | break; | |
1031 | else | |
1032 | return NULL; | |
1033 | s2++; | |
1034 | } | |
b81654f1 MS |
1035 | *s1++ = '\0'; |
1036 | ||
1037 | while (isspace (*s2)) | |
1038 | s2++; | |
1039 | if (found_quote) | |
1040 | { | |
1041 | if (*s2 == '\'') | |
1042 | s2++; | |
1043 | while (isspace (*s2)) | |
1044 | s2++; | |
1045 | } | |
1046 | ||
1047 | if (selector != NULL) | |
1048 | *selector = nselector; | |
1049 | ||
1050 | return s2; | |
1051 | } | |
1052 | ||
1053 | char * | |
d2e6263c MS |
1054 | parse_method (char *method, char *type, char **class, |
1055 | char **category, char **selector) | |
b81654f1 MS |
1056 | { |
1057 | char *s1 = NULL; | |
1058 | char *s2 = NULL; | |
1059 | int found_quote = 0; | |
1060 | ||
1061 | char ntype = '\0'; | |
1062 | char *nclass = NULL; | |
1063 | char *ncategory = NULL; | |
1064 | char *nselector = NULL; | |
1065 | ||
e8f3fcdd AC |
1066 | gdb_assert (type != NULL); |
1067 | gdb_assert (class != NULL); | |
1068 | gdb_assert (category != NULL); | |
1069 | gdb_assert (selector != NULL); | |
b81654f1 MS |
1070 | |
1071 | s1 = method; | |
1072 | ||
1073 | while (isspace (*s1)) | |
1074 | s1++; | |
1075 | if (*s1 == '\'') | |
1076 | { | |
1077 | found_quote = 1; | |
1078 | s1++; | |
1079 | } | |
1080 | while (isspace (*s1)) | |
1081 | s1++; | |
1082 | ||
1083 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1084 | ntype = *s1++; | |
1085 | ||
1086 | while (isspace (*s1)) | |
1087 | s1++; | |
1088 | ||
1089 | if (*s1 != '[') | |
1090 | return NULL; | |
1091 | s1++; | |
1092 | ||
1093 | nclass = s1; | |
1094 | while (isalnum (*s1) || (*s1 == '_')) | |
1095 | s1++; | |
1096 | ||
1097 | s2 = s1; | |
1098 | while (isspace (*s2)) | |
1099 | s2++; | |
1100 | ||
1101 | if (*s2 == '(') | |
1102 | { | |
1103 | s2++; | |
1104 | while (isspace (*s2)) | |
1105 | s2++; | |
1106 | ncategory = s2; | |
1107 | while (isalnum (*s2) || (*s2 == '_')) | |
1108 | s2++; | |
1109 | *s2++ = '\0'; | |
1110 | } | |
1111 | ||
d2e6263c | 1112 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1113 | *s1++ = '\0'; |
1114 | ||
1115 | nselector = s2; | |
1116 | s1 = s2; | |
1117 | ||
5cc80db3 MS |
1118 | for (;;) |
1119 | { | |
1120 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1121 | *s1++ = *s2; | |
1122 | else if (isspace (*s2)) | |
1123 | ; | |
1124 | else if (*s2 == ']') | |
1125 | break; | |
1126 | else | |
1127 | return NULL; | |
1128 | s2++; | |
1129 | } | |
b81654f1 MS |
1130 | *s1++ = '\0'; |
1131 | s2++; | |
1132 | ||
1133 | while (isspace (*s2)) | |
1134 | s2++; | |
1135 | if (found_quote) | |
1136 | { | |
1137 | if (*s2 != '\'') | |
1138 | return NULL; | |
1139 | s2++; | |
1140 | while (isspace (*s2)) | |
1141 | s2++; | |
1142 | } | |
1143 | ||
1144 | if (type != NULL) | |
1145 | *type = ntype; | |
1146 | if (class != NULL) | |
1147 | *class = nclass; | |
1148 | if (category != NULL) | |
1149 | *category = ncategory; | |
1150 | if (selector != NULL) | |
1151 | *selector = nselector; | |
1152 | ||
1153 | return s2; | |
1154 | } | |
1155 | ||
2f9a90b4 | 1156 | static void |
d2e6263c MS |
1157 | find_methods (struct symtab *symtab, char type, |
1158 | const char *class, const char *category, | |
1159 | const char *selector, struct symbol **syms, | |
1160 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1161 | { |
1162 | struct objfile *objfile = NULL; | |
1163 | struct minimal_symbol *msymbol = NULL; | |
1164 | struct block *block = NULL; | |
1165 | struct symbol *sym = NULL; | |
1166 | ||
1167 | char *symname = NULL; | |
1168 | ||
1169 | char ntype = '\0'; | |
1170 | char *nclass = NULL; | |
1171 | char *ncategory = NULL; | |
1172 | char *nselector = NULL; | |
1173 | ||
1174 | unsigned int csym = 0; | |
1175 | unsigned int cdebug = 0; | |
1176 | ||
1177 | static char *tmp = NULL; | |
1178 | static unsigned int tmplen = 0; | |
1179 | ||
e8f3fcdd AC |
1180 | gdb_assert (nsym != NULL); |
1181 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1182 | |
1183 | if (symtab) | |
1184 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1185 | ||
57a9e6af | 1186 | ALL_OBJFILES (objfile) |
b81654f1 | 1187 | { |
57a9e6af | 1188 | unsigned int *objc_csym; |
b81654f1 | 1189 | |
57a9e6af PP |
1190 | /* The objfile_csym variable counts the number of ObjC methods |
1191 | that this objfile defines. We save that count as a private | |
1192 | objfile data. If we have already determined that this objfile | |
1193 | provides no ObjC methods, we can skip it entirely. */ | |
b81654f1 | 1194 | |
57a9e6af | 1195 | unsigned int objfile_csym = 0; |
b81654f1 | 1196 | |
57a9e6af PP |
1197 | objc_csym = objfile_data (objfile, objc_objfile_data); |
1198 | if (objc_csym != NULL && *objc_csym == 0) | |
1199 | /* There are no ObjC symbols in this objfile. Skip it entirely. */ | |
b81654f1 MS |
1200 | continue; |
1201 | ||
57a9e6af | 1202 | ALL_OBJFILE_MSYMBOLS (objfile, msymbol) |
b81654f1 | 1203 | { |
69368a60 UW |
1204 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
1205 | CORE_ADDR pc = SYMBOL_VALUE_ADDRESS (msymbol); | |
1206 | ||
57a9e6af | 1207 | QUIT; |
b81654f1 | 1208 | |
0c4b2e63 MF |
1209 | /* Check the symbol name first as this can be done entirely without |
1210 | sending any query to the target. */ | |
1211 | symname = SYMBOL_NATURAL_NAME (msymbol); | |
1212 | if (symname == NULL) | |
1213 | continue; | |
1214 | ||
1215 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1216 | /* Not a method name. */ | |
1217 | continue; | |
1218 | ||
69368a60 UW |
1219 | /* The minimal symbol might point to a function descriptor; |
1220 | resolve it to the actual code address instead. */ | |
1221 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, pc, | |
1222 | ¤t_target); | |
57a9e6af PP |
1223 | |
1224 | if (symtab) | |
69368a60 | 1225 | if (pc < BLOCK_START (block) || pc >= BLOCK_END (block)) |
57a9e6af PP |
1226 | /* Not in the specified symtab. */ |
1227 | continue; | |
1228 | ||
0c4b2e63 | 1229 | /* Now that thinks are a bit sane, clean up the symname. */ |
57a9e6af PP |
1230 | while ((strlen (symname) + 1) >= tmplen) |
1231 | { | |
1232 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1233 | tmp = xrealloc (tmp, tmplen); | |
1234 | } | |
1235 | strcpy (tmp, symname); | |
b81654f1 | 1236 | |
0df8b418 MS |
1237 | if (parse_method (tmp, &ntype, &nclass, |
1238 | &ncategory, &nselector) == NULL) | |
57a9e6af PP |
1239 | continue; |
1240 | ||
1241 | objfile_csym++; | |
b81654f1 | 1242 | |
57a9e6af PP |
1243 | if ((type != '\0') && (ntype != type)) |
1244 | continue; | |
b81654f1 | 1245 | |
57a9e6af PP |
1246 | if ((class != NULL) |
1247 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
1248 | continue; | |
1249 | ||
1250 | if ((category != NULL) && | |
1251 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1252 | continue; | |
b81654f1 | 1253 | |
57a9e6af PP |
1254 | if ((selector != NULL) && |
1255 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1256 | continue; | |
1257 | ||
69368a60 | 1258 | sym = find_pc_function (pc); |
57a9e6af PP |
1259 | if (sym != NULL) |
1260 | { | |
1261 | const char *newsymname = SYMBOL_NATURAL_NAME (sym); | |
b81654f1 | 1262 | |
57a9e6af PP |
1263 | if (strcmp (symname, newsymname) == 0) |
1264 | { | |
1265 | /* Found a high-level method sym: swap it into the | |
1266 | lower part of sym_arr (below num_debuggable). */ | |
1267 | if (syms != NULL) | |
1268 | { | |
1269 | syms[csym] = syms[cdebug]; | |
1270 | syms[cdebug] = sym; | |
1271 | } | |
1272 | csym++; | |
1273 | cdebug++; | |
1274 | } | |
1275 | else | |
1276 | { | |
1277 | warning ( | |
d2e6263c | 1278 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", |
57a9e6af PP |
1279 | newsymname, symname); |
1280 | if (syms != NULL) | |
1281 | syms[csym] = (struct symbol *) msymbol; | |
1282 | csym++; | |
1283 | } | |
1284 | } | |
1285 | else | |
1286 | { | |
1287 | /* Found a non-debuggable method symbol. */ | |
1288 | if (syms != NULL) | |
1289 | syms[csym] = (struct symbol *) msymbol; | |
1290 | csym++; | |
1291 | } | |
1292 | } | |
1293 | if (objc_csym == NULL) | |
b81654f1 | 1294 | { |
6342b74a PP |
1295 | objc_csym = obstack_alloc (&objfile->objfile_obstack, |
1296 | sizeof (*objc_csym)); | |
57a9e6af PP |
1297 | *objc_csym = objfile_csym; |
1298 | set_objfile_data (objfile, objc_objfile_data, objc_csym); | |
b81654f1 | 1299 | } |
57a9e6af PP |
1300 | else |
1301 | /* Count of ObjC methods in this objfile should be constant. */ | |
1302 | gdb_assert (*objc_csym == objfile_csym); | |
b81654f1 MS |
1303 | } |
1304 | ||
1305 | if (nsym != NULL) | |
1306 | *nsym = csym; | |
1307 | if (ndebug != NULL) | |
1308 | *ndebug = cdebug; | |
1309 | } | |
1310 | ||
1311 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1312 | char *method, struct symbol **syms, |
1313 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1314 | { |
1315 | char type = '\0'; | |
1316 | char *class = NULL; | |
1317 | char *category = NULL; | |
1318 | char *selector = NULL; | |
1319 | ||
1320 | unsigned int csym = 0; | |
1321 | unsigned int cdebug = 0; | |
1322 | ||
1323 | unsigned int ncsym = 0; | |
1324 | unsigned int ncdebug = 0; | |
1325 | ||
1326 | char *buf = NULL; | |
1327 | char *tmp = NULL; | |
1328 | ||
e8f3fcdd AC |
1329 | gdb_assert (nsym != NULL); |
1330 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1331 | |
1332 | if (nsym != NULL) | |
1333 | *nsym = 0; | |
1334 | if (ndebug != NULL) | |
1335 | *ndebug = 0; | |
1336 | ||
1337 | buf = (char *) alloca (strlen (method) + 1); | |
1338 | strcpy (buf, method); | |
1339 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1340 | ||
5cc80db3 MS |
1341 | if (tmp == NULL) |
1342 | { | |
1343 | struct symbol *sym = NULL; | |
1344 | struct minimal_symbol *msym = NULL; | |
b81654f1 | 1345 | |
5cc80db3 MS |
1346 | strcpy (buf, method); |
1347 | tmp = parse_selector (buf, &selector); | |
b81654f1 | 1348 | |
5cc80db3 MS |
1349 | if (tmp == NULL) |
1350 | return NULL; | |
1351 | ||
1352 | sym = lookup_symbol (selector, block, VAR_DOMAIN, 0); | |
1353 | if (sym != NULL) | |
1354 | { | |
1355 | if (syms) | |
1356 | syms[csym] = sym; | |
1357 | csym++; | |
1358 | cdebug++; | |
1359 | } | |
1360 | ||
1361 | if (sym == NULL) | |
1362 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1363 | ||
1364 | if (msym != NULL) | |
1365 | { | |
1366 | if (syms) | |
1367 | syms[csym] = (struct symbol *)msym; | |
1368 | csym++; | |
1369 | } | |
1370 | } | |
b81654f1 MS |
1371 | |
1372 | if (syms != NULL) | |
d2e6263c MS |
1373 | find_methods (symtab, type, class, category, selector, |
1374 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1375 | else |
d2e6263c MS |
1376 | find_methods (symtab, type, class, category, selector, |
1377 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1378 | |
d2e6263c | 1379 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1380 | if (ncsym == 0 && ncdebug == 0) |
1381 | return method; | |
1382 | ||
1383 | /* Take debug symbols from the second batch of symbols and swap them | |
1384 | * with debug symbols from the first batch. Repeat until either the | |
1385 | * second section is out of debug symbols or the first section is | |
1386 | * full of debug symbols. Either way we have all debug symbols | |
0df8b418 | 1387 | * packed to the beginning of the buffer. |
d2e6263c | 1388 | */ |
b81654f1 MS |
1389 | |
1390 | if (syms != NULL) | |
1391 | { | |
1392 | while ((cdebug < csym) && (ncdebug > 0)) | |
1393 | { | |
1394 | struct symbol *s = NULL; | |
d2e6263c MS |
1395 | /* First non-debugging symbol. */ |
1396 | unsigned int i = cdebug; | |
1397 | /* Last of second batch of debug symbols. */ | |
1398 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1399 | |
1400 | s = syms[j]; | |
1401 | syms[j] = syms[i]; | |
1402 | syms[i] = s; | |
1403 | ||
d2e6263c MS |
1404 | /* We've moved a symbol from the second debug section to the |
1405 | first one. */ | |
b81654f1 MS |
1406 | cdebug++; |
1407 | ncdebug--; | |
1408 | } | |
1409 | } | |
1410 | ||
1411 | csym += ncsym; | |
1412 | cdebug += ncdebug; | |
1413 | ||
1414 | if (nsym != NULL) | |
1415 | *nsym = csym; | |
1416 | if (ndebug != NULL) | |
1417 | *ndebug = cdebug; | |
1418 | ||
1419 | if (syms == NULL) | |
1420 | return method + (tmp - buf); | |
1421 | ||
1422 | if (csym > 1) | |
1423 | { | |
d2e6263c | 1424 | /* Sort debuggable symbols. */ |
b81654f1 | 1425 | if (cdebug > 1) |
d2e6263c MS |
1426 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1427 | compare_classes); | |
b81654f1 | 1428 | |
d2e6263c | 1429 | /* Sort minimal_symbols. */ |
b81654f1 | 1430 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1431 | qsort (&syms[cdebug], csym - cdebug, |
1432 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1433 | } |
d2e6263c MS |
1434 | /* Terminate the sym_arr list. */ |
1435 | syms[csym] = 0; | |
b81654f1 MS |
1436 | |
1437 | return method + (tmp - buf); | |
1438 | } | |
1439 | ||
b9362cc7 | 1440 | static void |
b81654f1 MS |
1441 | print_object_command (char *args, int from_tty) |
1442 | { | |
1443 | struct value *object, *function, *description; | |
36e53c63 | 1444 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1445 | int i = 0; |
22a44745 | 1446 | gdb_byte c = 0; |
b81654f1 MS |
1447 | |
1448 | if (!args || !*args) | |
d2e6263c MS |
1449 | error ( |
1450 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1451 | |
1452 | { | |
1453 | struct expression *expr = parse_expression (args); | |
f86f5ca3 | 1454 | struct cleanup *old_chain = |
d2e6263c | 1455 | make_cleanup (free_current_contents, &expr); |
b81654f1 MS |
1456 | int pc = 0; |
1457 | ||
4b27a620 JB |
1458 | object = evaluate_subexp (builtin_type (expr->gdbarch)->builtin_data_ptr, |
1459 | expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1460 | do_cleanups (old_chain); |
1461 | } | |
1462 | ||
36e53c63 AF |
1463 | /* Validate the address for sanity. */ |
1464 | object_addr = value_as_long (object); | |
1465 | read_memory (object_addr, &c, 1); | |
1466 | ||
3e3b026f | 1467 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); |
36e53c63 | 1468 | if (function == NULL) |
8a3fe4f8 | 1469 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 MS |
1470 | |
1471 | description = call_function_by_hand (function, 1, &object); | |
1472 | ||
7248f48e AF |
1473 | string_addr = value_as_long (description); |
1474 | if (string_addr == 0) | |
8a3fe4f8 | 1475 | error (_("object returns null description")); |
b81654f1 MS |
1476 | |
1477 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1478 | if (c != 0) |
b81654f1 | 1479 | do |
d2e6263c | 1480 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1481 | QUIT; |
1482 | printf_filtered ("%c", c); | |
1483 | read_memory (string_addr + i++, &c, 1); | |
1484 | } while (c != 0); | |
1485 | else | |
a3f17187 | 1486 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1487 | printf_filtered ("\n"); |
1488 | } | |
1489 | ||
d2e6263c MS |
1490 | /* The data structure 'methcalls' is used to detect method calls (thru |
1491 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
0df8b418 | 1492 | * and ultimately find the method being called. |
b81654f1 MS |
1493 | */ |
1494 | ||
1495 | struct objc_methcall { | |
1496 | char *name; | |
d2e6263c | 1497 | /* Return instance method to be called. */ |
36e53c63 | 1498 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1499 | /* Start of pc range corresponding to method invocation. */ |
1500 | CORE_ADDR begin; | |
1501 | /* End of pc range corresponding to method invocation. */ | |
1502 | CORE_ADDR end; | |
b81654f1 MS |
1503 | }; |
1504 | ||
d2e6263c MS |
1505 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1506 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1507 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1508 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1509 | |
1510 | static struct objc_methcall methcalls[] = { | |
1511 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1512 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1513 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1514 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1515 | { "_objc_getClass", NULL, 0, 0}, | |
1516 | { "_objc_getMetaClass", NULL, 0, 0} | |
1517 | }; | |
1518 | ||
1519 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1520 | ||
d2e6263c MS |
1521 | /* The following function, "find_objc_msgsend", fills in the data |
1522 | * structure "objc_msgs" by finding the addresses of each of the | |
1523 | * (currently four) functions that it holds (of which objc_msgSend is | |
1524 | * the first). This must be called each time symbols are loaded, in | |
0df8b418 | 1525 | * case the functions have moved for some reason. |
b81654f1 MS |
1526 | */ |
1527 | ||
b9362cc7 | 1528 | static void |
b81654f1 MS |
1529 | find_objc_msgsend (void) |
1530 | { | |
1531 | unsigned int i; | |
b81654f1 | 1532 | |
5cc80db3 MS |
1533 | for (i = 0; i < nmethcalls; i++) |
1534 | { | |
1535 | struct minimal_symbol *func; | |
b81654f1 | 1536 | |
5cc80db3 MS |
1537 | /* Try both with and without underscore. */ |
1538 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); | |
1539 | if ((func == NULL) && (methcalls[i].name[0] == '_')) | |
1540 | { | |
1541 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1542 | } | |
1543 | if (func == NULL) | |
1544 | { | |
1545 | methcalls[i].begin = 0; | |
1546 | methcalls[i].end = 0; | |
1547 | continue; | |
1548 | } | |
1549 | ||
1550 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1551 | do { | |
1552 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1553 | } while (methcalls[i].begin == methcalls[i].end); | |
b81654f1 | 1554 | } |
b81654f1 MS |
1555 | } |
1556 | ||
1557 | /* find_objc_msgcall (replaces pc_off_limits) | |
1558 | * | |
d2e6263c MS |
1559 | * ALL that this function now does is to determine whether the input |
1560 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1561 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1562 | * if so, it returns the address of the method that will be called. | |
1563 | * | |
1564 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1565 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1566 | * returning the address of the shlib function that would be called. |
e76f05fa | 1567 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c | 1568 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
0df8b418 | 1569 | * dependent modules. |
b81654f1 MS |
1570 | */ |
1571 | ||
1572 | struct objc_submethod_helper_data { | |
36e53c63 | 1573 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1574 | CORE_ADDR pc; |
1575 | CORE_ADDR *new_pc; | |
1576 | }; | |
1577 | ||
b9362cc7 | 1578 | static int |
7248f48e | 1579 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1580 | { |
d2e6263c MS |
1581 | struct objc_submethod_helper_data *s = |
1582 | (struct objc_submethod_helper_data *) arg; | |
1583 | ||
1584 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1585 | return 1; |
d2e6263c | 1586 | else |
b81654f1 | 1587 | return 0; |
b81654f1 MS |
1588 | } |
1589 | ||
b9362cc7 | 1590 | static int |
36e53c63 | 1591 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1592 | CORE_ADDR pc, |
1593 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1594 | { |
1595 | struct objc_submethod_helper_data s; | |
1596 | ||
1597 | s.f = f; | |
1598 | s.pc = pc; | |
1599 | s.new_pc = new_pc; | |
1600 | ||
1601 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1602 | (void *) &s, |
0df8b418 MS |
1603 | "Unable to determine target of " |
1604 | "Objective-C method call (ignoring):\n", | |
d2e6263c | 1605 | RETURN_MASK_ALL) == 0) |
b81654f1 | 1606 | return 1; |
d2e6263c | 1607 | else |
b81654f1 | 1608 | return 0; |
b81654f1 MS |
1609 | } |
1610 | ||
1611 | int | |
1612 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1613 | { | |
1614 | unsigned int i; | |
1615 | ||
1616 | find_objc_msgsend (); | |
5e488a7b AC |
1617 | if (new_pc != NULL) |
1618 | { | |
1619 | *new_pc = 0; | |
1620 | } | |
b81654f1 | 1621 | |
d2e6263c MS |
1622 | for (i = 0; i < nmethcalls; i++) |
1623 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1624 | { | |
1625 | if (methcalls[i].stop_at != NULL) | |
1626 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1627 | pc, new_pc); | |
1628 | else | |
1629 | return 0; | |
b81654f1 | 1630 | } |
d2e6263c | 1631 | |
b81654f1 MS |
1632 | return 0; |
1633 | } | |
1634 | ||
0df8b418 MS |
1635 | /* -Wmissing-prototypes */ |
1636 | extern initialize_file_ftype _initialize_objc_language; | |
b9362cc7 | 1637 | |
b81654f1 MS |
1638 | void |
1639 | _initialize_objc_language (void) | |
1640 | { | |
1641 | add_language (&objc_language_defn); | |
d2e6263c | 1642 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1bedd215 | 1643 | _("All Objective-C selectors, or those matching REGEXP.")); |
d2e6263c | 1644 | add_info ("classes", classes_info, /* INFO CLASSES command. */ |
1bedd215 | 1645 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1646 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1647 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1648 | add_com_alias ("po", "print-object", class_vars, 1); |
1649 | } | |
1650 | ||
b81654f1 | 1651 | static void |
e17a4113 UW |
1652 | read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1653 | struct objc_method *method) | |
b81654f1 | 1654 | { |
e17a4113 | 1655 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1656 | |
e17a4113 UW |
1657 | method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order); |
1658 | method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1659 | method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
b81654f1 MS |
1660 | } |
1661 | ||
e17a4113 UW |
1662 | static unsigned long |
1663 | read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr) | |
b81654f1 | 1664 | { |
e17a4113 | 1665 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1666 | |
e17a4113 | 1667 | return read_memory_unsigned_integer (addr + 4, 4, byte_order); |
b81654f1 MS |
1668 | } |
1669 | ||
1670 | static void | |
e17a4113 UW |
1671 | read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1672 | unsigned long num, struct objc_method *method) | |
b81654f1 | 1673 | { |
e17a4113 UW |
1674 | gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr)); |
1675 | read_objc_method (gdbarch, addr + 8 + (12 * num), method); | |
b81654f1 MS |
1676 | } |
1677 | ||
1678 | static void | |
e17a4113 UW |
1679 | read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr, |
1680 | struct objc_object *object) | |
b81654f1 | 1681 | { |
e17a4113 | 1682 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1683 | |
e17a4113 | 1684 | object->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
b81654f1 MS |
1685 | } |
1686 | ||
1687 | static void | |
e17a4113 UW |
1688 | read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr, |
1689 | struct objc_super *super) | |
b81654f1 | 1690 | { |
e17a4113 | 1691 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1692 | |
e17a4113 UW |
1693 | super->receiver = read_memory_unsigned_integer (addr, 4, byte_order); |
1694 | super->class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
b81654f1 MS |
1695 | }; |
1696 | ||
1697 | static void | |
e17a4113 UW |
1698 | read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr, |
1699 | struct objc_class *class) | |
b81654f1 | 1700 | { |
e17a4113 | 1701 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
5cc80db3 | 1702 | |
e17a4113 UW |
1703 | class->isa = read_memory_unsigned_integer (addr, 4, byte_order); |
1704 | class->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1705 | class->name = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1706 | class->version = read_memory_unsigned_integer (addr + 12, 4, byte_order); | |
1707 | class->info = read_memory_unsigned_integer (addr + 16, 4, byte_order); | |
0df8b418 MS |
1708 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4, |
1709 | byte_order); | |
e17a4113 UW |
1710 | class->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order); |
1711 | class->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order); | |
1712 | class->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order); | |
1713 | class->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order); | |
b81654f1 MS |
1714 | } |
1715 | ||
b9362cc7 | 1716 | static CORE_ADDR |
e17a4113 UW |
1717 | find_implementation_from_class (struct gdbarch *gdbarch, |
1718 | CORE_ADDR class, CORE_ADDR sel) | |
b81654f1 | 1719 | { |
e17a4113 | 1720 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
b81654f1 MS |
1721 | CORE_ADDR subclass = class; |
1722 | ||
d2e6263c MS |
1723 | while (subclass != 0) |
1724 | { | |
b81654f1 | 1725 | |
d2e6263c MS |
1726 | struct objc_class class_str; |
1727 | unsigned mlistnum = 0; | |
b81654f1 | 1728 | |
e17a4113 | 1729 | read_objc_class (gdbarch, subclass, &class_str); |
b81654f1 | 1730 | |
d2e6263c MS |
1731 | for (;;) |
1732 | { | |
1733 | CORE_ADDR mlist; | |
1734 | unsigned long nmethods; | |
1735 | unsigned long i; | |
b81654f1 | 1736 | |
d2e6263c | 1737 | mlist = read_memory_unsigned_integer (class_str.methods + |
e17a4113 UW |
1738 | (4 * mlistnum), |
1739 | 4, byte_order); | |
d2e6263c MS |
1740 | if (mlist == 0) |
1741 | break; | |
b81654f1 | 1742 | |
e17a4113 | 1743 | nmethods = read_objc_methlist_nmethods (gdbarch, mlist); |
b81654f1 | 1744 | |
d2e6263c MS |
1745 | for (i = 0; i < nmethods; i++) |
1746 | { | |
1747 | struct objc_method meth_str; | |
b81654f1 | 1748 | |
5cc80db3 | 1749 | read_objc_methlist_method (gdbarch, mlist, i, &meth_str); |
b81654f1 | 1750 | #if 0 |
d2e6263c MS |
1751 | fprintf (stderr, |
1752 | "checking method 0x%lx against selector 0x%lx\n", | |
1753 | meth_str.name, sel); | |
b81654f1 MS |
1754 | #endif |
1755 | ||
d2e6263c | 1756 | if (meth_str.name == sel) |
1abf022c | 1757 | /* FIXME: hppa arch was doing a pointer dereference |
0df8b418 | 1758 | here. There needs to be a better way to do that. */ |
1abf022c | 1759 | return meth_str.imp; |
d2e6263c MS |
1760 | } |
1761 | mlistnum++; | |
b81654f1 | 1762 | } |
d2e6263c | 1763 | subclass = class_str.super_class; |
b81654f1 | 1764 | } |
b81654f1 MS |
1765 | |
1766 | return 0; | |
1767 | } | |
1768 | ||
b9362cc7 | 1769 | static CORE_ADDR |
e17a4113 UW |
1770 | find_implementation (struct gdbarch *gdbarch, |
1771 | CORE_ADDR object, CORE_ADDR sel) | |
b81654f1 MS |
1772 | { |
1773 | struct objc_object ostr; | |
1774 | ||
d2e6263c MS |
1775 | if (object == 0) |
1776 | return 0; | |
e17a4113 | 1777 | read_objc_object (gdbarch, object, &ostr); |
d2e6263c MS |
1778 | if (ostr.isa == 0) |
1779 | return 0; | |
b81654f1 | 1780 | |
e17a4113 | 1781 | return find_implementation_from_class (gdbarch, ostr.isa, sel); |
b81654f1 MS |
1782 | } |
1783 | ||
1784 | static int | |
1785 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1786 | { | |
5ed92fa8 UW |
1787 | struct frame_info *frame = get_current_frame (); |
1788 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1789 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1790 | ||
b81654f1 MS |
1791 | CORE_ADDR object; |
1792 | CORE_ADDR sel; | |
1793 | CORE_ADDR res; | |
1794 | ||
5ed92fa8 UW |
1795 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1796 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1797 | |
e17a4113 | 1798 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1799 | if (new_pc != 0) |
1800 | *new_pc = res; | |
1801 | if (res == 0) | |
1802 | return 1; | |
b81654f1 MS |
1803 | return 0; |
1804 | } | |
1805 | ||
1806 | static int | |
1807 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1808 | { | |
5ed92fa8 UW |
1809 | struct frame_info *frame = get_current_frame (); |
1810 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1811 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1812 | ||
b81654f1 MS |
1813 | CORE_ADDR object; |
1814 | CORE_ADDR sel; | |
1815 | CORE_ADDR res; | |
1816 | ||
5ed92fa8 UW |
1817 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1818 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1819 | |
e17a4113 | 1820 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1821 | if (new_pc != 0) |
1822 | *new_pc = res; | |
1823 | if (res == 0) | |
1824 | return 1; | |
b81654f1 MS |
1825 | return 0; |
1826 | } | |
1827 | ||
1828 | static int | |
1829 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1830 | { | |
5ed92fa8 UW |
1831 | struct frame_info *frame = get_current_frame (); |
1832 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1833 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1834 | ||
b81654f1 MS |
1835 | struct objc_super sstr; |
1836 | ||
1837 | CORE_ADDR super; | |
1838 | CORE_ADDR sel; | |
1839 | CORE_ADDR res; | |
1840 | ||
5ed92fa8 UW |
1841 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1842 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1843 | |
e17a4113 | 1844 | read_objc_super (gdbarch, super, &sstr); |
d2e6263c MS |
1845 | if (sstr.class == 0) |
1846 | return 0; | |
b81654f1 | 1847 | |
e17a4113 | 1848 | res = find_implementation_from_class (gdbarch, sstr.class, sel); |
d2e6263c MS |
1849 | if (new_pc != 0) |
1850 | *new_pc = res; | |
1851 | if (res == 0) | |
1852 | return 1; | |
b81654f1 MS |
1853 | return 0; |
1854 | } | |
1855 | ||
1856 | static int | |
1857 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1858 | { | |
5ed92fa8 UW |
1859 | struct frame_info *frame = get_current_frame (); |
1860 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1861 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1862 | ||
b81654f1 MS |
1863 | struct objc_super sstr; |
1864 | ||
1865 | CORE_ADDR super; | |
1866 | CORE_ADDR sel; | |
1867 | CORE_ADDR res; | |
1868 | ||
5ed92fa8 UW |
1869 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1870 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1871 | |
e17a4113 | 1872 | read_objc_super (gdbarch, super, &sstr); |
d2e6263c MS |
1873 | if (sstr.class == 0) |
1874 | return 0; | |
b81654f1 | 1875 | |
e17a4113 | 1876 | res = find_implementation_from_class (gdbarch, sstr.class, sel); |
d2e6263c MS |
1877 | if (new_pc != 0) |
1878 | *new_pc = res; | |
1879 | if (res == 0) | |
1880 | return 1; | |
b81654f1 MS |
1881 | return 0; |
1882 | } | |
57a9e6af PP |
1883 | |
1884 | void | |
1885 | _initialize_objc_lang (void) | |
1886 | { | |
1887 | objc_objfile_data = register_objfile_data (); | |
1888 | } |