Commit | Line | Data |
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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
4c38e0a4 | 3 | Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 |
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 | { | |
e2e0b3e5 | 128 | complaint (&symfile_complaints, _("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 | { | |
e2e0b3e5 | 156 | complaint (&symfile_complaints, _("no way to lookup Objective-C selectors")); |
b81654f1 MS |
157 | return 0; |
158 | } | |
159 | ||
d2e6263c | 160 | selstring = value_coerce_array (value_string (selname, |
3b7538c0 | 161 | strlen (selname) + 1, char_type)); |
b81654f1 MS |
162 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
163 | } | |
164 | ||
165 | struct value * | |
3b7538c0 | 166 | value_nsstring (struct gdbarch *gdbarch, char *ptr, int len) |
b81654f1 | 167 | { |
3b7538c0 | 168 | struct type *char_type = builtin_type (gdbarch)->builtin_char; |
b81654f1 MS |
169 | struct value *stringValue[3]; |
170 | struct value *function, *nsstringValue; | |
171 | struct symbol *sym; | |
172 | struct type *type; | |
173 | ||
174 | if (!target_has_execution) | |
d2e6263c | 175 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 | 176 | |
3b7538c0 | 177 | stringValue[2] = value_string(ptr, len, char_type); |
b81654f1 | 178 | stringValue[2] = value_coerce_array(stringValue[2]); |
d2e6263c | 179 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
180 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
181 | { | |
3b7538c0 | 182 | function = find_function_in_inferior("_NSNewStringFromCString", NULL); |
b81654f1 MS |
183 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
184 | } | |
185 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
186 | { | |
3b7538c0 | 187 | function = find_function_in_inferior("istr", NULL); |
b81654f1 MS |
188 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
189 | } | |
190 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
191 | { | |
3e3b026f | 192 | function |
3b7538c0 UW |
193 | = find_function_in_inferior("+[NSString stringWithCString:]", NULL); |
194 | type = builtin_type (gdbarch)->builtin_long; | |
3e3b026f | 195 | |
b81654f1 | 196 | stringValue[0] = value_from_longest |
3b7538c0 | 197 | (type, lookup_objc_class (gdbarch, "NSString")); |
b81654f1 | 198 | stringValue[1] = value_from_longest |
3b7538c0 | 199 | (type, lookup_child_selector (gdbarch, "stringWithCString:")); |
b81654f1 MS |
200 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); |
201 | } | |
202 | else | |
8a3fe4f8 | 203 | error (_("NSString: internal error -- no way to create new NSString")); |
b81654f1 | 204 | |
3e3b026f UW |
205 | sym = lookup_struct_typedef("NSString", 0, 1); |
206 | if (sym == NULL) | |
207 | sym = lookup_struct_typedef("NXString", 0, 1); | |
208 | if (sym == NULL) | |
209 | type = builtin_type (gdbarch)->builtin_data_ptr; | |
210 | else | |
211 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
212 | ||
04624583 | 213 | deprecated_set_value_type (nsstringValue, type); |
b81654f1 MS |
214 | return nsstringValue; |
215 | } | |
216 | ||
d2e6263c | 217 | /* Objective-C name demangling. */ |
b81654f1 MS |
218 | |
219 | char * | |
9a3d7dfd | 220 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
221 | { |
222 | char *demangled, *cp; | |
223 | ||
224 | if (mangled[0] == '_' && | |
225 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
226 | mangled[2] == '_') | |
227 | { | |
228 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
229 | ||
230 | if (mangled[1] == 'i') | |
231 | *cp++ = '-'; /* for instance method */ | |
232 | else | |
233 | *cp++ = '+'; /* for class method */ | |
234 | ||
235 | *cp++ = '['; /* opening left brace */ | |
236 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
237 | ||
238 | while (*cp && *cp == '_') | |
239 | cp++; /* skip any initial underbars in class name */ | |
240 | ||
7248f48e AF |
241 | cp = strchr(cp, '_'); |
242 | if (!cp) /* find first non-initial underbar */ | |
b81654f1 | 243 | { |
7248f48e | 244 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
245 | return NULL; |
246 | } | |
247 | if (cp[1] == '_') { /* easy case: no category name */ | |
248 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
249 | strcpy(cp, mangled + (cp - demangled) + 2); | |
250 | } | |
251 | else { | |
252 | *cp++ = '('; /* less easy case: category name */ | |
7248f48e AF |
253 | cp = strchr(cp, '_'); |
254 | if (!cp) | |
b81654f1 | 255 | { |
7248f48e | 256 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
257 | return NULL; |
258 | } | |
259 | *cp++ = ')'; | |
d2e6263c | 260 | *cp++ = ' '; /* overwriting 1st char of method name... */ |
b81654f1 MS |
261 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
262 | } | |
263 | ||
264 | while (*cp && *cp == '_') | |
265 | cp++; /* skip any initial underbars in method name */ | |
266 | ||
267 | for (; *cp; cp++) | |
268 | if (*cp == '_') | |
269 | *cp = ':'; /* replace remaining '_' with ':' */ | |
270 | ||
271 | *cp++ = ']'; /* closing right brace */ | |
272 | *cp++ = 0; /* string terminator */ | |
273 | return demangled; | |
274 | } | |
275 | else | |
d2e6263c | 276 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
277 | } |
278 | ||
d2e6263c MS |
279 | /* Print the character C on STREAM as part of the contents of a |
280 | literal string whose delimiter is QUOTER. Note that that format | |
281 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
282 | |
283 | static void | |
6c7a06a3 | 284 | objc_emit_char (int c, struct type *type, struct ui_file *stream, int quoter) |
b81654f1 MS |
285 | { |
286 | ||
d2e6263c | 287 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
288 | |
289 | if (PRINT_LITERAL_FORM (c)) | |
290 | { | |
291 | if (c == '\\' || c == quoter) | |
292 | { | |
293 | fputs_filtered ("\\", stream); | |
294 | } | |
295 | fprintf_filtered (stream, "%c", c); | |
296 | } | |
297 | else | |
298 | { | |
299 | switch (c) | |
300 | { | |
301 | case '\n': | |
302 | fputs_filtered ("\\n", stream); | |
303 | break; | |
304 | case '\b': | |
305 | fputs_filtered ("\\b", stream); | |
306 | break; | |
307 | case '\t': | |
308 | fputs_filtered ("\\t", stream); | |
309 | break; | |
310 | case '\f': | |
311 | fputs_filtered ("\\f", stream); | |
312 | break; | |
313 | case '\r': | |
314 | fputs_filtered ("\\r", stream); | |
315 | break; | |
316 | case '\033': | |
317 | fputs_filtered ("\\e", stream); | |
318 | break; | |
319 | case '\007': | |
320 | fputs_filtered ("\\a", stream); | |
321 | break; | |
322 | default: | |
323 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
324 | break; | |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | static void | |
6c7a06a3 | 330 | objc_printchar (int c, struct type *type, struct ui_file *stream) |
b81654f1 MS |
331 | { |
332 | fputs_filtered ("'", stream); | |
6c7a06a3 | 333 | objc_emit_char (c, type, stream, '\''); |
b81654f1 MS |
334 | fputs_filtered ("'", stream); |
335 | } | |
336 | ||
d2e6263c MS |
337 | /* Print the character string STRING, printing at most LENGTH |
338 | characters. Printing stops early if the number hits print_max; | |
339 | repeat counts are printed as appropriate. Print ellipses at the | |
340 | end if we had to stop before printing LENGTH characters, or if | |
341 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
342 | |
343 | static void | |
6c7a06a3 TT |
344 | objc_printstr (struct ui_file *stream, struct type *type, |
345 | const gdb_byte *string, unsigned int length, | |
be759fcf | 346 | const char *encoding, int force_ellipses, |
79a45b7d | 347 | const struct value_print_options *options) |
b81654f1 | 348 | { |
f86f5ca3 | 349 | unsigned int i; |
b81654f1 MS |
350 | unsigned int things_printed = 0; |
351 | int in_quotes = 0; | |
352 | int need_comma = 0; | |
b81654f1 MS |
353 | |
354 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
355 | the last byte of it is a null, we don't print that, in |
356 | traditional C style. */ | |
b81654f1 MS |
357 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
358 | length--; | |
359 | ||
360 | if (length == 0) | |
361 | { | |
362 | fputs_filtered ("\"\"", stream); | |
363 | return; | |
364 | } | |
365 | ||
79a45b7d | 366 | for (i = 0; i < length && things_printed < options->print_max; ++i) |
b81654f1 | 367 | { |
d2e6263c MS |
368 | /* Position of the character we are examining to see whether it |
369 | is repeated. */ | |
b81654f1 MS |
370 | unsigned int rep1; |
371 | /* Number of repetitions we have detected so far. */ | |
372 | unsigned int reps; | |
373 | ||
374 | QUIT; | |
375 | ||
376 | if (need_comma) | |
377 | { | |
378 | fputs_filtered (", ", stream); | |
379 | need_comma = 0; | |
380 | } | |
381 | ||
382 | rep1 = i + 1; | |
383 | reps = 1; | |
384 | while (rep1 < length && string[rep1] == string[i]) | |
385 | { | |
386 | ++rep1; | |
387 | ++reps; | |
388 | } | |
389 | ||
79a45b7d | 390 | if (reps > options->repeat_count_threshold) |
b81654f1 MS |
391 | { |
392 | if (in_quotes) | |
393 | { | |
79a45b7d | 394 | if (options->inspect_it) |
b81654f1 MS |
395 | fputs_filtered ("\\\", ", stream); |
396 | else | |
397 | fputs_filtered ("\", ", stream); | |
398 | in_quotes = 0; | |
399 | } | |
6c7a06a3 | 400 | objc_printchar (string[i], type, stream); |
b81654f1 MS |
401 | fprintf_filtered (stream, " <repeats %u times>", reps); |
402 | i = rep1 - 1; | |
79a45b7d | 403 | things_printed += options->repeat_count_threshold; |
b81654f1 MS |
404 | need_comma = 1; |
405 | } | |
406 | else | |
407 | { | |
408 | if (!in_quotes) | |
409 | { | |
79a45b7d | 410 | if (options->inspect_it) |
b81654f1 MS |
411 | fputs_filtered ("\\\"", stream); |
412 | else | |
413 | fputs_filtered ("\"", stream); | |
414 | in_quotes = 1; | |
415 | } | |
6c7a06a3 | 416 | objc_emit_char (string[i], type, stream, '"'); |
b81654f1 MS |
417 | ++things_printed; |
418 | } | |
419 | } | |
420 | ||
421 | /* Terminate the quotes if necessary. */ | |
422 | if (in_quotes) | |
423 | { | |
79a45b7d | 424 | if (options->inspect_it) |
b81654f1 MS |
425 | fputs_filtered ("\\\"", stream); |
426 | else | |
427 | fputs_filtered ("\"", stream); | |
428 | } | |
429 | ||
430 | if (force_ellipses || i < length) | |
431 | fputs_filtered ("...", stream); | |
432 | } | |
433 | ||
f636b87d AF |
434 | /* Determine if we are currently in the Objective-C dispatch function. |
435 | If so, get the address of the method function that the dispatcher | |
436 | would call and use that as the function to step into instead. Also | |
437 | skip over the trampoline for the function (if any). This is better | |
438 | for the user since they are only interested in stepping into the | |
439 | method function anyway. */ | |
440 | static CORE_ADDR | |
52f729a7 | 441 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
f636b87d | 442 | { |
d80b854b | 443 | struct gdbarch *gdbarch = get_frame_arch (frame); |
f636b87d AF |
444 | CORE_ADDR real_stop_pc; |
445 | CORE_ADDR method_stop_pc; | |
446 | ||
d80b854b | 447 | real_stop_pc = gdbarch_skip_trampoline_code (gdbarch, frame, stop_pc); |
f636b87d AF |
448 | |
449 | if (real_stop_pc != 0) | |
450 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
451 | else | |
452 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
453 | ||
454 | if (method_stop_pc) | |
455 | { | |
e76f05fa | 456 | real_stop_pc = gdbarch_skip_trampoline_code |
d80b854b | 457 | (gdbarch, frame, method_stop_pc); |
f636b87d AF |
458 | if (real_stop_pc == 0) |
459 | real_stop_pc = method_stop_pc; | |
460 | } | |
461 | ||
462 | return real_stop_pc; | |
463 | } | |
464 | ||
b81654f1 MS |
465 | |
466 | /* Table mapping opcodes into strings for printing operators | |
467 | and precedences of the operators. */ | |
468 | ||
469 | static const struct op_print objc_op_print_tab[] = | |
470 | { | |
471 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
472 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
473 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
474 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
475 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
476 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
477 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
478 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
479 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
480 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
481 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
482 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
483 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
484 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
485 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
486 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
487 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
488 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
489 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
490 | {"%", BINOP_REM, PREC_MUL, 0}, | |
491 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
492 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
493 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
494 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
495 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
496 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
497 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
498 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
499 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 500 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
501 | }; |
502 | ||
b81654f1 | 503 | const struct language_defn objc_language_defn = { |
d2e6263c | 504 | "objective-c", /* Language name */ |
b81654f1 | 505 | language_objc, |
b81654f1 MS |
506 | range_check_off, |
507 | type_check_off, | |
508 | case_sensitive_on, | |
7ca2d3a3 | 509 | array_row_major, |
9a044a89 | 510 | macro_expansion_c, |
5f9769d1 | 511 | &exp_descriptor_standard, |
b81654f1 MS |
512 | objc_parse, |
513 | objc_error, | |
e85c3284 | 514 | null_post_parser, |
b81654f1 MS |
515 | objc_printchar, /* Print a character constant */ |
516 | objc_printstr, /* Function to print string constant */ | |
517 | objc_emit_char, | |
b81654f1 | 518 | c_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 519 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
b81654f1 MS |
520 | c_val_print, /* Print a value using appropriate syntax */ |
521 | c_value_print, /* Print a top-level value */ | |
f636b87d | 522 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
2b2d9e11 | 523 | "self", /* name_of_this */ |
5f9a71c3 | 524 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
b368761e | 525 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 526 | objc_demangle, /* Language specific symbol demangler */ |
31c27f77 | 527 | NULL, /* Language specific class_name_from_physname */ |
d2e6263c MS |
528 | objc_op_print_tab, /* Expression operators for printing */ |
529 | 1, /* C-style arrays */ | |
b81654f1 | 530 | 0, /* String lower bound */ |
6084f43a | 531 | default_word_break_characters, |
41d27058 | 532 | default_make_symbol_completion_list, |
cad351d1 | 533 | c_language_arch_info, |
e79af960 | 534 | default_print_array_index, |
41f1b697 | 535 | default_pass_by_reference, |
ae6a3a4c | 536 | default_get_string, |
b81654f1 MS |
537 | LANG_MAGIC |
538 | }; | |
539 | ||
540 | /* | |
541 | * ObjC: | |
d2e6263c | 542 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
543 | */ |
544 | ||
d2e6263c | 545 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
546 | { |
547 | struct selname *next; | |
548 | char *msglist_sel; | |
549 | int msglist_len; | |
550 | }; | |
551 | ||
552 | static int msglist_len; | |
553 | static struct selname *selname_chain; | |
554 | static char *msglist_sel; | |
555 | ||
556 | void | |
557 | start_msglist(void) | |
558 | { | |
f86f5ca3 | 559 | struct selname *new = |
b81654f1 MS |
560 | (struct selname *) xmalloc (sizeof (struct selname)); |
561 | ||
562 | new->next = selname_chain; | |
563 | new->msglist_len = msglist_len; | |
564 | new->msglist_sel = msglist_sel; | |
565 | msglist_len = 0; | |
566 | msglist_sel = (char *)xmalloc(1); | |
567 | *msglist_sel = 0; | |
568 | selname_chain = new; | |
569 | } | |
570 | ||
571 | void | |
572 | add_msglist(struct stoken *str, int addcolon) | |
573 | { | |
574 | char *s, *p; | |
575 | int len, plen; | |
576 | ||
d2e6263c MS |
577 | if (str == 0) { /* Unnamed arg, or... */ |
578 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
579 | msglist_len++; |
580 | return; | |
581 | } | |
582 | p = ""; | |
583 | plen = 0; | |
584 | } else { | |
585 | p = str->ptr; | |
586 | plen = str->length; | |
587 | } | |
588 | len = plen + strlen(msglist_sel) + 2; | |
589 | s = (char *)xmalloc(len); | |
590 | strcpy(s, msglist_sel); | |
591 | strncat(s, p, plen); | |
7248f48e | 592 | xfree(msglist_sel); |
b81654f1 MS |
593 | msglist_sel = s; |
594 | if (addcolon) { | |
595 | s[len-2] = ':'; | |
596 | s[len-1] = 0; | |
597 | msglist_len++; | |
598 | } else | |
599 | s[len-2] = '\0'; | |
600 | } | |
601 | ||
602 | int | |
603 | end_msglist(void) | |
604 | { | |
f86f5ca3 PH |
605 | int val = msglist_len; |
606 | struct selname *sel = selname_chain; | |
607 | char *p = msglist_sel; | |
c253954e | 608 | CORE_ADDR selid; |
b81654f1 MS |
609 | |
610 | selname_chain = sel->next; | |
611 | msglist_len = sel->msglist_len; | |
612 | msglist_sel = sel->msglist_sel; | |
3b7538c0 | 613 | selid = lookup_child_selector (parse_gdbarch, p); |
b81654f1 | 614 | if (!selid) |
8a3fe4f8 | 615 | error (_("Can't find selector \"%s\""), p); |
b81654f1 | 616 | write_exp_elt_longcst (selid); |
7248f48e | 617 | xfree(p); |
d2e6263c | 618 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 619 | xfree(sel); |
b81654f1 MS |
620 | |
621 | return val; | |
622 | } | |
623 | ||
624 | /* | |
625 | * Function: specialcmp (char *a, char *b) | |
626 | * | |
627 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 628 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
629 | */ |
630 | ||
b9362cc7 AC |
631 | static int |
632 | specialcmp (char *a, char *b) | |
b81654f1 MS |
633 | { |
634 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
635 | { | |
636 | if (*a != *b) | |
637 | return *a - *b; | |
638 | a++, b++; | |
639 | } | |
640 | if (*a && *a != ' ' && *a != ']') | |
641 | return 1; /* a is longer therefore greater */ | |
642 | if (*b && *b != ' ' && *b != ']') | |
643 | return -1; /* a is shorter therefore lesser */ | |
644 | return 0; /* a and b are identical */ | |
645 | } | |
646 | ||
647 | /* | |
36e53c63 | 648 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 649 | * |
d2e6263c MS |
650 | * Comparison function for use with qsort. Arguments are symbols or |
651 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
652 | */ |
653 | ||
654 | static int | |
36e53c63 | 655 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
656 | { |
657 | char *aname, *bname; | |
658 | ||
de5ad195 DC |
659 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
660 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 661 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 662 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 663 | |
7248f48e AF |
664 | aname = strchr(aname, ' '); |
665 | bname = strchr(bname, ' '); | |
666 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 667 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
668 | |
669 | return specialcmp (aname+1, bname+1); | |
670 | } | |
671 | ||
672 | /* | |
673 | * Function: selectors_info (regexp, from_tty) | |
674 | * | |
d2e6263c MS |
675 | * Implements the "Info selectors" command. Takes an optional regexp |
676 | * arg. Lists all objective c selectors that match the regexp. Works | |
677 | * by grepping thru all symbols for objective c methods. Output list | |
678 | * is sorted and uniqued. | |
b81654f1 MS |
679 | */ |
680 | ||
681 | static void | |
682 | selectors_info (char *regexp, int from_tty) | |
683 | { | |
684 | struct objfile *objfile; | |
685 | struct minimal_symbol *msymbol; | |
686 | char *name; | |
687 | char *val; | |
688 | int matches = 0; | |
689 | int maxlen = 0; | |
690 | int ix; | |
691 | char myregexp[2048]; | |
692 | char asel[256]; | |
693 | struct symbol **sym_arr; | |
694 | int plusminus = 0; | |
695 | ||
696 | if (regexp == NULL) | |
d2e6263c | 697 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
698 | else |
699 | { | |
d2e6263c MS |
700 | if (*regexp == '+' || *regexp == '-') |
701 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
702 | plusminus = *regexp++; |
703 | while (*regexp == ' ' || *regexp == '\t') | |
704 | regexp++; | |
705 | } | |
706 | if (*regexp == '\0') | |
707 | strcpy(myregexp, ".*]"); | |
708 | else | |
709 | { | |
710 | strcpy(myregexp, regexp); | |
711 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
712 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
713 | else | |
714 | strcat(myregexp, ".*]"); | |
715 | } | |
716 | } | |
717 | ||
718 | if (regexp != NULL) | |
5e488a7b AC |
719 | { |
720 | val = re_comp (myregexp); | |
721 | if (val != 0) | |
8a3fe4f8 | 722 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 723 | } |
b81654f1 | 724 | |
d2e6263c | 725 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
726 | ALL_MSYMBOLS (objfile, msymbol) |
727 | { | |
728 | QUIT; | |
36018d2e | 729 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
730 | if (name && |
731 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 732 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 733 | { |
d2e6263c | 734 | /* Filter for class/instance methods. */ |
b81654f1 | 735 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
736 | continue; |
737 | /* Find selector part. */ | |
738 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
739 | if (regexp == NULL || re_exec(++name) != 0) |
740 | { | |
741 | char *mystart = name; | |
742 | char *myend = (char *) strchr(mystart, ']'); | |
743 | ||
744 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 745 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
746 | matches++; |
747 | } | |
748 | } | |
749 | } | |
750 | if (matches) | |
751 | { | |
a3f17187 | 752 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
753 | regexp ? regexp : "*"); |
754 | ||
755 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
756 | matches = 0; | |
757 | ALL_MSYMBOLS (objfile, msymbol) | |
758 | { | |
759 | QUIT; | |
36018d2e | 760 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
761 | if (name && |
762 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 763 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 764 | { |
d2e6263c | 765 | /* Filter for class/instance methods. */ |
b81654f1 | 766 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
767 | continue; |
768 | /* Find selector part. */ | |
769 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
770 | if (regexp == NULL || re_exec(++name) != 0) |
771 | sym_arr[matches++] = (struct symbol *) msymbol; | |
772 | } | |
773 | } | |
774 | ||
775 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
776 | compare_selectors); | |
d2e6263c MS |
777 | /* Prevent compare on first iteration. */ |
778 | asel[0] = 0; | |
779 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
780 | { |
781 | char *p = asel; | |
782 | ||
783 | QUIT; | |
36018d2e | 784 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
785 | name = strchr (name, ' ') + 1; |
786 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 787 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 788 | |
d2e6263c MS |
789 | /* Copy selector part. */ |
790 | while (*name && *name != ']') | |
b81654f1 MS |
791 | *p++ = *name++; |
792 | *p++ = '\0'; | |
d2e6263c MS |
793 | /* Print in columns. */ |
794 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
795 | } |
796 | begin_line(); | |
797 | } | |
798 | else | |
a3f17187 | 799 | printf_filtered (_("No selectors matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
800 | } |
801 | ||
802 | /* | |
36e53c63 | 803 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 804 | * |
d2e6263c MS |
805 | * Comparison function for use with qsort. Arguments are symbols or |
806 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
807 | */ |
808 | ||
809 | static int | |
36e53c63 | 810 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
811 | { |
812 | char *aname, *bname; | |
813 | ||
de5ad195 DC |
814 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
815 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 816 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 817 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
818 | |
819 | return specialcmp (aname+1, bname+1); | |
820 | } | |
821 | ||
822 | /* | |
823 | * Function: classes_info(regexp, from_tty) | |
824 | * | |
825 | * Implements the "info classes" command for objective c classes. | |
826 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
827 | * Works by grepping thru the list of objective c methods. List will |
828 | * be sorted and uniqued (since one class may have many methods). | |
829 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
830 | */ |
831 | ||
832 | static void | |
833 | classes_info (char *regexp, int from_tty) | |
834 | { | |
835 | struct objfile *objfile; | |
836 | struct minimal_symbol *msymbol; | |
837 | char *name; | |
838 | char *val; | |
839 | int matches = 0; | |
840 | int maxlen = 0; | |
841 | int ix; | |
842 | char myregexp[2048]; | |
843 | char aclass[256]; | |
844 | struct symbol **sym_arr; | |
845 | ||
846 | if (regexp == NULL) | |
d2e6263c | 847 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
848 | else |
849 | { | |
850 | strcpy(myregexp, regexp); | |
851 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 852 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
853 | myregexp[strlen(myregexp) - 1] = ' '; |
854 | else | |
855 | strcat(myregexp, ".* "); | |
856 | } | |
857 | ||
858 | if (regexp != NULL) | |
5e488a7b AC |
859 | { |
860 | val = re_comp (myregexp); | |
861 | if (val != 0) | |
8a3fe4f8 | 862 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 863 | } |
b81654f1 | 864 | |
d2e6263c | 865 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
866 | ALL_MSYMBOLS (objfile, msymbol) |
867 | { | |
868 | QUIT; | |
36018d2e | 869 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
870 | if (name && |
871 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 872 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
873 | if (regexp == NULL || re_exec(name+2) != 0) |
874 | { | |
d2e6263c MS |
875 | /* Compute length of classname part. */ |
876 | char *mystart = name + 2; | |
b81654f1 MS |
877 | char *myend = (char *) strchr(mystart, ' '); |
878 | ||
879 | if (myend && (myend - mystart > maxlen)) | |
880 | maxlen = myend - mystart; | |
881 | matches++; | |
882 | } | |
883 | } | |
884 | if (matches) | |
885 | { | |
a3f17187 | 886 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 MS |
887 | regexp ? regexp : "*"); |
888 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
889 | matches = 0; | |
890 | ALL_MSYMBOLS (objfile, msymbol) | |
891 | { | |
892 | QUIT; | |
36018d2e | 893 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
894 | if (name && |
895 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 896 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
897 | if (regexp == NULL || re_exec(name+2) != 0) |
898 | sym_arr[matches++] = (struct symbol *) msymbol; | |
899 | } | |
900 | ||
901 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
902 | compare_classes); | |
d2e6263c MS |
903 | /* Prevent compare on first iteration. */ |
904 | aclass[0] = 0; | |
905 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
906 | { |
907 | char *p = aclass; | |
908 | ||
909 | QUIT; | |
36018d2e | 910 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
911 | name += 2; |
912 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 913 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 914 | |
d2e6263c MS |
915 | /* Copy class part of method name. */ |
916 | while (*name && *name != ' ') | |
b81654f1 MS |
917 | *p++ = *name++; |
918 | *p++ = '\0'; | |
d2e6263c MS |
919 | /* Print in columns. */ |
920 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
921 | } |
922 | begin_line(); | |
923 | } | |
924 | else | |
a3f17187 | 925 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
926 | } |
927 | ||
928 | /* | |
929 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
930 | * | |
931 | * Input: a string representing a selector | |
932 | * a pointer to an array of symbol pointers | |
933 | * possibly a pointer to a symbol found by the caller. | |
934 | * | |
d2e6263c MS |
935 | * Output: number of methods that implement that selector. Side |
936 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 937 | * |
d2e6263c MS |
938 | * By analogy with function "find_methods" (symtab.c), builds a list |
939 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
940 | * (symtab.c) can list them and ask the user to choose one or more. | |
941 | * In this case the matches are objective c methods | |
942 | * ("implementations") matching an objective c selector. | |
b81654f1 | 943 | * |
d2e6263c MS |
944 | * Note that it is possible for a normal (c-style) function to have |
945 | * the same name as an objective c selector. To prevent the selector | |
946 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
947 | * search for such a function first, and if it finds one, pass it in | |
948 | * to us. We will then integrate it into the list. We also search | |
949 | * for one here, among the minsyms. | |
b81654f1 | 950 | * |
d2e6263c MS |
951 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
952 | * into two parts: debuggable (struct symbol) syms, and | |
953 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
954 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
955 | * be the index of the first non-debuggable one). | |
b81654f1 MS |
956 | */ |
957 | ||
958 | /* | |
959 | * Function: total_number_of_imps (char *selector); | |
960 | * | |
961 | * Input: a string representing a selector | |
962 | * Output: number of methods that implement that selector. | |
963 | * | |
d2e6263c | 964 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 965 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
966 | * matching the input, and to allocate an array of pointers to them |
967 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
968 | */ |
969 | ||
970 | char * | |
971 | parse_selector (char *method, char **selector) | |
972 | { | |
973 | char *s1 = NULL; | |
974 | char *s2 = NULL; | |
975 | int found_quote = 0; | |
976 | ||
977 | char *nselector = NULL; | |
978 | ||
e8f3fcdd | 979 | gdb_assert (selector != NULL); |
b81654f1 MS |
980 | |
981 | s1 = method; | |
982 | ||
983 | while (isspace (*s1)) | |
984 | s1++; | |
985 | if (*s1 == '\'') | |
986 | { | |
987 | found_quote = 1; | |
988 | s1++; | |
989 | } | |
990 | while (isspace (*s1)) | |
991 | s1++; | |
992 | ||
993 | nselector = s1; | |
994 | s2 = s1; | |
995 | ||
996 | for (;;) { | |
997 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
998 | *s1++ = *s2; | |
999 | else if (isspace (*s2)) | |
1000 | ; | |
1001 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1002 | break; | |
1003 | else | |
1004 | return NULL; | |
1005 | s2++; | |
1006 | } | |
1007 | *s1++ = '\0'; | |
1008 | ||
1009 | while (isspace (*s2)) | |
1010 | s2++; | |
1011 | if (found_quote) | |
1012 | { | |
1013 | if (*s2 == '\'') | |
1014 | s2++; | |
1015 | while (isspace (*s2)) | |
1016 | s2++; | |
1017 | } | |
1018 | ||
1019 | if (selector != NULL) | |
1020 | *selector = nselector; | |
1021 | ||
1022 | return s2; | |
1023 | } | |
1024 | ||
1025 | char * | |
d2e6263c MS |
1026 | parse_method (char *method, char *type, char **class, |
1027 | char **category, char **selector) | |
b81654f1 MS |
1028 | { |
1029 | char *s1 = NULL; | |
1030 | char *s2 = NULL; | |
1031 | int found_quote = 0; | |
1032 | ||
1033 | char ntype = '\0'; | |
1034 | char *nclass = NULL; | |
1035 | char *ncategory = NULL; | |
1036 | char *nselector = NULL; | |
1037 | ||
e8f3fcdd AC |
1038 | gdb_assert (type != NULL); |
1039 | gdb_assert (class != NULL); | |
1040 | gdb_assert (category != NULL); | |
1041 | gdb_assert (selector != NULL); | |
b81654f1 MS |
1042 | |
1043 | s1 = method; | |
1044 | ||
1045 | while (isspace (*s1)) | |
1046 | s1++; | |
1047 | if (*s1 == '\'') | |
1048 | { | |
1049 | found_quote = 1; | |
1050 | s1++; | |
1051 | } | |
1052 | while (isspace (*s1)) | |
1053 | s1++; | |
1054 | ||
1055 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1056 | ntype = *s1++; | |
1057 | ||
1058 | while (isspace (*s1)) | |
1059 | s1++; | |
1060 | ||
1061 | if (*s1 != '[') | |
1062 | return NULL; | |
1063 | s1++; | |
1064 | ||
1065 | nclass = s1; | |
1066 | while (isalnum (*s1) || (*s1 == '_')) | |
1067 | s1++; | |
1068 | ||
1069 | s2 = s1; | |
1070 | while (isspace (*s2)) | |
1071 | s2++; | |
1072 | ||
1073 | if (*s2 == '(') | |
1074 | { | |
1075 | s2++; | |
1076 | while (isspace (*s2)) | |
1077 | s2++; | |
1078 | ncategory = s2; | |
1079 | while (isalnum (*s2) || (*s2 == '_')) | |
1080 | s2++; | |
1081 | *s2++ = '\0'; | |
1082 | } | |
1083 | ||
d2e6263c | 1084 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1085 | *s1++ = '\0'; |
1086 | ||
1087 | nselector = s2; | |
1088 | s1 = s2; | |
1089 | ||
1090 | for (;;) { | |
1091 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1092 | *s1++ = *s2; | |
1093 | else if (isspace (*s2)) | |
1094 | ; | |
1095 | else if (*s2 == ']') | |
1096 | break; | |
1097 | else | |
1098 | return NULL; | |
1099 | s2++; | |
1100 | } | |
1101 | *s1++ = '\0'; | |
1102 | s2++; | |
1103 | ||
1104 | while (isspace (*s2)) | |
1105 | s2++; | |
1106 | if (found_quote) | |
1107 | { | |
1108 | if (*s2 != '\'') | |
1109 | return NULL; | |
1110 | s2++; | |
1111 | while (isspace (*s2)) | |
1112 | s2++; | |
1113 | } | |
1114 | ||
1115 | if (type != NULL) | |
1116 | *type = ntype; | |
1117 | if (class != NULL) | |
1118 | *class = nclass; | |
1119 | if (category != NULL) | |
1120 | *category = ncategory; | |
1121 | if (selector != NULL) | |
1122 | *selector = nselector; | |
1123 | ||
1124 | return s2; | |
1125 | } | |
1126 | ||
2f9a90b4 | 1127 | static void |
d2e6263c MS |
1128 | find_methods (struct symtab *symtab, char type, |
1129 | const char *class, const char *category, | |
1130 | const char *selector, struct symbol **syms, | |
1131 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1132 | { |
1133 | struct objfile *objfile = NULL; | |
1134 | struct minimal_symbol *msymbol = NULL; | |
1135 | struct block *block = NULL; | |
1136 | struct symbol *sym = NULL; | |
1137 | ||
1138 | char *symname = NULL; | |
1139 | ||
1140 | char ntype = '\0'; | |
1141 | char *nclass = NULL; | |
1142 | char *ncategory = NULL; | |
1143 | char *nselector = NULL; | |
1144 | ||
1145 | unsigned int csym = 0; | |
1146 | unsigned int cdebug = 0; | |
1147 | ||
1148 | static char *tmp = NULL; | |
1149 | static unsigned int tmplen = 0; | |
1150 | ||
e8f3fcdd AC |
1151 | gdb_assert (nsym != NULL); |
1152 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1153 | |
1154 | if (symtab) | |
1155 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1156 | ||
57a9e6af | 1157 | ALL_OBJFILES (objfile) |
b81654f1 | 1158 | { |
57a9e6af | 1159 | unsigned int *objc_csym; |
b81654f1 | 1160 | |
57a9e6af PP |
1161 | /* The objfile_csym variable counts the number of ObjC methods |
1162 | that this objfile defines. We save that count as a private | |
1163 | objfile data. If we have already determined that this objfile | |
1164 | provides no ObjC methods, we can skip it entirely. */ | |
b81654f1 | 1165 | |
57a9e6af | 1166 | unsigned int objfile_csym = 0; |
b81654f1 | 1167 | |
57a9e6af PP |
1168 | objc_csym = objfile_data (objfile, objc_objfile_data); |
1169 | if (objc_csym != NULL && *objc_csym == 0) | |
1170 | /* There are no ObjC symbols in this objfile. Skip it entirely. */ | |
b81654f1 MS |
1171 | continue; |
1172 | ||
57a9e6af | 1173 | ALL_OBJFILE_MSYMBOLS (objfile, msymbol) |
b81654f1 | 1174 | { |
69368a60 UW |
1175 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
1176 | CORE_ADDR pc = SYMBOL_VALUE_ADDRESS (msymbol); | |
1177 | ||
57a9e6af | 1178 | QUIT; |
b81654f1 | 1179 | |
0c4b2e63 MF |
1180 | /* Check the symbol name first as this can be done entirely without |
1181 | sending any query to the target. */ | |
1182 | symname = SYMBOL_NATURAL_NAME (msymbol); | |
1183 | if (symname == NULL) | |
1184 | continue; | |
1185 | ||
1186 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1187 | /* Not a method name. */ | |
1188 | continue; | |
1189 | ||
69368a60 UW |
1190 | /* The minimal symbol might point to a function descriptor; |
1191 | resolve it to the actual code address instead. */ | |
1192 | pc = gdbarch_convert_from_func_ptr_addr (gdbarch, pc, | |
1193 | ¤t_target); | |
57a9e6af PP |
1194 | |
1195 | if (symtab) | |
69368a60 | 1196 | if (pc < BLOCK_START (block) || pc >= BLOCK_END (block)) |
57a9e6af PP |
1197 | /* Not in the specified symtab. */ |
1198 | continue; | |
1199 | ||
0c4b2e63 | 1200 | /* Now that thinks are a bit sane, clean up the symname. */ |
57a9e6af PP |
1201 | while ((strlen (symname) + 1) >= tmplen) |
1202 | { | |
1203 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1204 | tmp = xrealloc (tmp, tmplen); | |
1205 | } | |
1206 | strcpy (tmp, symname); | |
b81654f1 | 1207 | |
57a9e6af PP |
1208 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) |
1209 | continue; | |
1210 | ||
1211 | objfile_csym++; | |
b81654f1 | 1212 | |
57a9e6af PP |
1213 | if ((type != '\0') && (ntype != type)) |
1214 | continue; | |
b81654f1 | 1215 | |
57a9e6af PP |
1216 | if ((class != NULL) |
1217 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
1218 | continue; | |
1219 | ||
1220 | if ((category != NULL) && | |
1221 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1222 | continue; | |
b81654f1 | 1223 | |
57a9e6af PP |
1224 | if ((selector != NULL) && |
1225 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1226 | continue; | |
1227 | ||
69368a60 | 1228 | sym = find_pc_function (pc); |
57a9e6af PP |
1229 | if (sym != NULL) |
1230 | { | |
1231 | const char *newsymname = SYMBOL_NATURAL_NAME (sym); | |
b81654f1 | 1232 | |
57a9e6af PP |
1233 | if (strcmp (symname, newsymname) == 0) |
1234 | { | |
1235 | /* Found a high-level method sym: swap it into the | |
1236 | lower part of sym_arr (below num_debuggable). */ | |
1237 | if (syms != NULL) | |
1238 | { | |
1239 | syms[csym] = syms[cdebug]; | |
1240 | syms[cdebug] = sym; | |
1241 | } | |
1242 | csym++; | |
1243 | cdebug++; | |
1244 | } | |
1245 | else | |
1246 | { | |
1247 | warning ( | |
d2e6263c | 1248 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", |
57a9e6af PP |
1249 | newsymname, symname); |
1250 | if (syms != NULL) | |
1251 | syms[csym] = (struct symbol *) msymbol; | |
1252 | csym++; | |
1253 | } | |
1254 | } | |
1255 | else | |
1256 | { | |
1257 | /* Found a non-debuggable method symbol. */ | |
1258 | if (syms != NULL) | |
1259 | syms[csym] = (struct symbol *) msymbol; | |
1260 | csym++; | |
1261 | } | |
1262 | } | |
1263 | if (objc_csym == NULL) | |
b81654f1 | 1264 | { |
6342b74a PP |
1265 | objc_csym = obstack_alloc (&objfile->objfile_obstack, |
1266 | sizeof (*objc_csym)); | |
57a9e6af PP |
1267 | *objc_csym = objfile_csym; |
1268 | set_objfile_data (objfile, objc_objfile_data, objc_csym); | |
b81654f1 | 1269 | } |
57a9e6af PP |
1270 | else |
1271 | /* Count of ObjC methods in this objfile should be constant. */ | |
1272 | gdb_assert (*objc_csym == objfile_csym); | |
b81654f1 MS |
1273 | } |
1274 | ||
1275 | if (nsym != NULL) | |
1276 | *nsym = csym; | |
1277 | if (ndebug != NULL) | |
1278 | *ndebug = cdebug; | |
1279 | } | |
1280 | ||
1281 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1282 | char *method, struct symbol **syms, |
1283 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1284 | { |
1285 | char type = '\0'; | |
1286 | char *class = NULL; | |
1287 | char *category = NULL; | |
1288 | char *selector = NULL; | |
1289 | ||
1290 | unsigned int csym = 0; | |
1291 | unsigned int cdebug = 0; | |
1292 | ||
1293 | unsigned int ncsym = 0; | |
1294 | unsigned int ncdebug = 0; | |
1295 | ||
1296 | char *buf = NULL; | |
1297 | char *tmp = NULL; | |
1298 | ||
e8f3fcdd AC |
1299 | gdb_assert (nsym != NULL); |
1300 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1301 | |
1302 | if (nsym != NULL) | |
1303 | *nsym = 0; | |
1304 | if (ndebug != NULL) | |
1305 | *ndebug = 0; | |
1306 | ||
1307 | buf = (char *) alloca (strlen (method) + 1); | |
1308 | strcpy (buf, method); | |
1309 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1310 | ||
1311 | if (tmp == NULL) { | |
1312 | ||
b81654f1 MS |
1313 | struct symbol *sym = NULL; |
1314 | struct minimal_symbol *msym = NULL; | |
1315 | ||
1316 | strcpy (buf, method); | |
1317 | tmp = parse_selector (buf, &selector); | |
1318 | ||
1319 | if (tmp == NULL) | |
1320 | return NULL; | |
1321 | ||
2570f2b7 | 1322 | sym = lookup_symbol (selector, block, VAR_DOMAIN, 0); |
b81654f1 MS |
1323 | if (sym != NULL) |
1324 | { | |
1325 | if (syms) | |
1326 | syms[csym] = sym; | |
1327 | csym++; | |
1328 | cdebug++; | |
1329 | } | |
1330 | ||
1331 | if (sym == NULL) | |
1332 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1333 | ||
1334 | if (msym != NULL) | |
1335 | { | |
1336 | if (syms) | |
36e53c63 | 1337 | syms[csym] = (struct symbol *)msym; |
b81654f1 MS |
1338 | csym++; |
1339 | } | |
1340 | } | |
1341 | ||
1342 | if (syms != NULL) | |
d2e6263c MS |
1343 | find_methods (symtab, type, class, category, selector, |
1344 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1345 | else |
d2e6263c MS |
1346 | find_methods (symtab, type, class, category, selector, |
1347 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1348 | |
d2e6263c | 1349 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1350 | if (ncsym == 0 && ncdebug == 0) |
1351 | return method; | |
1352 | ||
1353 | /* Take debug symbols from the second batch of symbols and swap them | |
1354 | * with debug symbols from the first batch. Repeat until either the | |
1355 | * second section is out of debug symbols or the first section is | |
1356 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1357 | * packed to the beginning of the buffer. |
1358 | */ | |
b81654f1 MS |
1359 | |
1360 | if (syms != NULL) | |
1361 | { | |
1362 | while ((cdebug < csym) && (ncdebug > 0)) | |
1363 | { | |
1364 | struct symbol *s = NULL; | |
d2e6263c MS |
1365 | /* First non-debugging symbol. */ |
1366 | unsigned int i = cdebug; | |
1367 | /* Last of second batch of debug symbols. */ | |
1368 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1369 | |
1370 | s = syms[j]; | |
1371 | syms[j] = syms[i]; | |
1372 | syms[i] = s; | |
1373 | ||
d2e6263c MS |
1374 | /* We've moved a symbol from the second debug section to the |
1375 | first one. */ | |
b81654f1 MS |
1376 | cdebug++; |
1377 | ncdebug--; | |
1378 | } | |
1379 | } | |
1380 | ||
1381 | csym += ncsym; | |
1382 | cdebug += ncdebug; | |
1383 | ||
1384 | if (nsym != NULL) | |
1385 | *nsym = csym; | |
1386 | if (ndebug != NULL) | |
1387 | *ndebug = cdebug; | |
1388 | ||
1389 | if (syms == NULL) | |
1390 | return method + (tmp - buf); | |
1391 | ||
1392 | if (csym > 1) | |
1393 | { | |
d2e6263c | 1394 | /* Sort debuggable symbols. */ |
b81654f1 | 1395 | if (cdebug > 1) |
d2e6263c MS |
1396 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1397 | compare_classes); | |
b81654f1 | 1398 | |
d2e6263c | 1399 | /* Sort minimal_symbols. */ |
b81654f1 | 1400 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1401 | qsort (&syms[cdebug], csym - cdebug, |
1402 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1403 | } |
d2e6263c MS |
1404 | /* Terminate the sym_arr list. */ |
1405 | syms[csym] = 0; | |
b81654f1 MS |
1406 | |
1407 | return method + (tmp - buf); | |
1408 | } | |
1409 | ||
b9362cc7 | 1410 | static void |
b81654f1 MS |
1411 | print_object_command (char *args, int from_tty) |
1412 | { | |
1413 | struct value *object, *function, *description; | |
36e53c63 | 1414 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1415 | int i = 0; |
22a44745 | 1416 | gdb_byte c = 0; |
b81654f1 MS |
1417 | |
1418 | if (!args || !*args) | |
d2e6263c MS |
1419 | error ( |
1420 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1421 | |
1422 | { | |
1423 | struct expression *expr = parse_expression (args); | |
f86f5ca3 | 1424 | struct cleanup *old_chain = |
d2e6263c | 1425 | make_cleanup (free_current_contents, &expr); |
b81654f1 MS |
1426 | int pc = 0; |
1427 | ||
4b27a620 JB |
1428 | object = evaluate_subexp (builtin_type (expr->gdbarch)->builtin_data_ptr, |
1429 | expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1430 | do_cleanups (old_chain); |
1431 | } | |
1432 | ||
36e53c63 AF |
1433 | /* Validate the address for sanity. */ |
1434 | object_addr = value_as_long (object); | |
1435 | read_memory (object_addr, &c, 1); | |
1436 | ||
3e3b026f | 1437 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); |
36e53c63 | 1438 | if (function == NULL) |
8a3fe4f8 | 1439 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 MS |
1440 | |
1441 | description = call_function_by_hand (function, 1, &object); | |
1442 | ||
7248f48e AF |
1443 | string_addr = value_as_long (description); |
1444 | if (string_addr == 0) | |
8a3fe4f8 | 1445 | error (_("object returns null description")); |
b81654f1 MS |
1446 | |
1447 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1448 | if (c != 0) |
b81654f1 | 1449 | do |
d2e6263c | 1450 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1451 | QUIT; |
1452 | printf_filtered ("%c", c); | |
1453 | read_memory (string_addr + i++, &c, 1); | |
1454 | } while (c != 0); | |
1455 | else | |
a3f17187 | 1456 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1457 | printf_filtered ("\n"); |
1458 | } | |
1459 | ||
d2e6263c MS |
1460 | /* The data structure 'methcalls' is used to detect method calls (thru |
1461 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1462 | * and ultimately find the method being called. | |
b81654f1 MS |
1463 | */ |
1464 | ||
1465 | struct objc_methcall { | |
1466 | char *name; | |
d2e6263c | 1467 | /* Return instance method to be called. */ |
36e53c63 | 1468 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1469 | /* Start of pc range corresponding to method invocation. */ |
1470 | CORE_ADDR begin; | |
1471 | /* End of pc range corresponding to method invocation. */ | |
1472 | CORE_ADDR end; | |
b81654f1 MS |
1473 | }; |
1474 | ||
d2e6263c MS |
1475 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1476 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1477 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1478 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1479 | |
1480 | static struct objc_methcall methcalls[] = { | |
1481 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1482 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1483 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1484 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1485 | { "_objc_getClass", NULL, 0, 0}, | |
1486 | { "_objc_getMetaClass", NULL, 0, 0} | |
1487 | }; | |
1488 | ||
1489 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1490 | ||
d2e6263c MS |
1491 | /* The following function, "find_objc_msgsend", fills in the data |
1492 | * structure "objc_msgs" by finding the addresses of each of the | |
1493 | * (currently four) functions that it holds (of which objc_msgSend is | |
1494 | * the first). This must be called each time symbols are loaded, in | |
1495 | * case the functions have moved for some reason. | |
b81654f1 MS |
1496 | */ |
1497 | ||
b9362cc7 | 1498 | static void |
b81654f1 MS |
1499 | find_objc_msgsend (void) |
1500 | { | |
1501 | unsigned int i; | |
1502 | for (i = 0; i < nmethcalls; i++) { | |
1503 | ||
1504 | struct minimal_symbol *func; | |
1505 | ||
d2e6263c | 1506 | /* Try both with and without underscore. */ |
b81654f1 MS |
1507 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1508 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1509 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1510 | } | |
1511 | if (func == NULL) { | |
1512 | methcalls[i].begin = 0; | |
1513 | methcalls[i].end = 0; | |
1514 | continue; | |
1515 | } | |
1516 | ||
1517 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1518 | do { | |
1519 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1520 | } while (methcalls[i].begin == methcalls[i].end); | |
1521 | } | |
1522 | } | |
1523 | ||
1524 | /* find_objc_msgcall (replaces pc_off_limits) | |
1525 | * | |
d2e6263c MS |
1526 | * ALL that this function now does is to determine whether the input |
1527 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1528 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1529 | * if so, it returns the address of the method that will be called. | |
1530 | * | |
1531 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1532 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1533 | * returning the address of the shlib function that would be called. |
e76f05fa | 1534 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c MS |
1535 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
1536 | * dependent modules. | |
b81654f1 MS |
1537 | */ |
1538 | ||
1539 | struct objc_submethod_helper_data { | |
36e53c63 | 1540 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1541 | CORE_ADDR pc; |
1542 | CORE_ADDR *new_pc; | |
1543 | }; | |
1544 | ||
b9362cc7 | 1545 | static int |
7248f48e | 1546 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1547 | { |
d2e6263c MS |
1548 | struct objc_submethod_helper_data *s = |
1549 | (struct objc_submethod_helper_data *) arg; | |
1550 | ||
1551 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1552 | return 1; |
d2e6263c | 1553 | else |
b81654f1 | 1554 | return 0; |
b81654f1 MS |
1555 | } |
1556 | ||
b9362cc7 | 1557 | static int |
36e53c63 | 1558 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1559 | CORE_ADDR pc, |
1560 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1561 | { |
1562 | struct objc_submethod_helper_data s; | |
1563 | ||
1564 | s.f = f; | |
1565 | s.pc = pc; | |
1566 | s.new_pc = new_pc; | |
1567 | ||
1568 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1569 | (void *) &s, |
d2e6263c MS |
1570 | "Unable to determine target of Objective-C method call (ignoring):\n", |
1571 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1572 | return 1; |
d2e6263c | 1573 | else |
b81654f1 | 1574 | return 0; |
b81654f1 MS |
1575 | } |
1576 | ||
1577 | int | |
1578 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1579 | { | |
1580 | unsigned int i; | |
1581 | ||
1582 | find_objc_msgsend (); | |
5e488a7b AC |
1583 | if (new_pc != NULL) |
1584 | { | |
1585 | *new_pc = 0; | |
1586 | } | |
b81654f1 | 1587 | |
d2e6263c MS |
1588 | for (i = 0; i < nmethcalls; i++) |
1589 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1590 | { | |
1591 | if (methcalls[i].stop_at != NULL) | |
1592 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1593 | pc, new_pc); | |
1594 | else | |
1595 | return 0; | |
b81654f1 | 1596 | } |
d2e6263c | 1597 | |
b81654f1 MS |
1598 | return 0; |
1599 | } | |
1600 | ||
a78f21af | 1601 | extern initialize_file_ftype _initialize_objc_language; /* -Wmissing-prototypes */ |
b9362cc7 | 1602 | |
b81654f1 MS |
1603 | void |
1604 | _initialize_objc_language (void) | |
1605 | { | |
1606 | add_language (&objc_language_defn); | |
d2e6263c | 1607 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1bedd215 | 1608 | _("All Objective-C selectors, or those matching REGEXP.")); |
d2e6263c | 1609 | add_info ("classes", classes_info, /* INFO CLASSES command. */ |
1bedd215 | 1610 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1611 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1612 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1613 | add_com_alias ("po", "print-object", class_vars, 1); |
1614 | } | |
1615 | ||
b81654f1 | 1616 | static void |
e17a4113 UW |
1617 | read_objc_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1618 | struct objc_method *method) | |
b81654f1 | 1619 | { |
e17a4113 UW |
1620 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1621 | method->name = read_memory_unsigned_integer (addr + 0, 4, byte_order); | |
1622 | method->types = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1623 | method->imp = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
b81654f1 MS |
1624 | } |
1625 | ||
e17a4113 UW |
1626 | static unsigned long |
1627 | read_objc_methlist_nmethods (struct gdbarch *gdbarch, CORE_ADDR addr) | |
b81654f1 | 1628 | { |
e17a4113 UW |
1629 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1630 | return read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
b81654f1 MS |
1631 | } |
1632 | ||
1633 | static void | |
e17a4113 UW |
1634 | read_objc_methlist_method (struct gdbarch *gdbarch, CORE_ADDR addr, |
1635 | unsigned long num, struct objc_method *method) | |
b81654f1 | 1636 | { |
e17a4113 UW |
1637 | gdb_assert (num < read_objc_methlist_nmethods (gdbarch, addr)); |
1638 | read_objc_method (gdbarch, addr + 8 + (12 * num), method); | |
b81654f1 MS |
1639 | } |
1640 | ||
1641 | static void | |
e17a4113 UW |
1642 | read_objc_object (struct gdbarch *gdbarch, CORE_ADDR addr, |
1643 | struct objc_object *object) | |
b81654f1 | 1644 | { |
e17a4113 UW |
1645 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1646 | object->isa = read_memory_unsigned_integer (addr, 4, byte_order); | |
b81654f1 MS |
1647 | } |
1648 | ||
1649 | static void | |
e17a4113 UW |
1650 | read_objc_super (struct gdbarch *gdbarch, CORE_ADDR addr, |
1651 | struct objc_super *super) | |
b81654f1 | 1652 | { |
e17a4113 UW |
1653 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1654 | super->receiver = read_memory_unsigned_integer (addr, 4, byte_order); | |
1655 | super->class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
b81654f1 MS |
1656 | }; |
1657 | ||
1658 | static void | |
e17a4113 UW |
1659 | read_objc_class (struct gdbarch *gdbarch, CORE_ADDR addr, |
1660 | struct objc_class *class) | |
b81654f1 | 1661 | { |
e17a4113 UW |
1662 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
1663 | class->isa = read_memory_unsigned_integer (addr, 4, byte_order); | |
1664 | class->super_class = read_memory_unsigned_integer (addr + 4, 4, byte_order); | |
1665 | class->name = read_memory_unsigned_integer (addr + 8, 4, byte_order); | |
1666 | class->version = read_memory_unsigned_integer (addr + 12, 4, byte_order); | |
1667 | class->info = read_memory_unsigned_integer (addr + 16, 4, byte_order); | |
1668 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4, byte_order); | |
1669 | class->ivars = read_memory_unsigned_integer (addr + 24, 4, byte_order); | |
1670 | class->methods = read_memory_unsigned_integer (addr + 28, 4, byte_order); | |
1671 | class->cache = read_memory_unsigned_integer (addr + 32, 4, byte_order); | |
1672 | class->protocols = read_memory_unsigned_integer (addr + 36, 4, byte_order); | |
b81654f1 MS |
1673 | } |
1674 | ||
b9362cc7 | 1675 | static CORE_ADDR |
e17a4113 UW |
1676 | find_implementation_from_class (struct gdbarch *gdbarch, |
1677 | CORE_ADDR class, CORE_ADDR sel) | |
b81654f1 | 1678 | { |
e17a4113 | 1679 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
b81654f1 MS |
1680 | CORE_ADDR subclass = class; |
1681 | ||
d2e6263c MS |
1682 | while (subclass != 0) |
1683 | { | |
b81654f1 | 1684 | |
d2e6263c MS |
1685 | struct objc_class class_str; |
1686 | unsigned mlistnum = 0; | |
b81654f1 | 1687 | |
e17a4113 | 1688 | read_objc_class (gdbarch, subclass, &class_str); |
b81654f1 | 1689 | |
d2e6263c MS |
1690 | for (;;) |
1691 | { | |
1692 | CORE_ADDR mlist; | |
1693 | unsigned long nmethods; | |
1694 | unsigned long i; | |
b81654f1 | 1695 | |
d2e6263c | 1696 | mlist = read_memory_unsigned_integer (class_str.methods + |
e17a4113 UW |
1697 | (4 * mlistnum), |
1698 | 4, byte_order); | |
d2e6263c MS |
1699 | if (mlist == 0) |
1700 | break; | |
b81654f1 | 1701 | |
e17a4113 | 1702 | nmethods = read_objc_methlist_nmethods (gdbarch, mlist); |
b81654f1 | 1703 | |
d2e6263c MS |
1704 | for (i = 0; i < nmethods; i++) |
1705 | { | |
1706 | struct objc_method meth_str; | |
e17a4113 | 1707 | read_objc_methlist_method (gdbarch, mlist, i, &meth_str); |
b81654f1 MS |
1708 | |
1709 | #if 0 | |
d2e6263c MS |
1710 | fprintf (stderr, |
1711 | "checking method 0x%lx against selector 0x%lx\n", | |
1712 | meth_str.name, sel); | |
b81654f1 MS |
1713 | #endif |
1714 | ||
d2e6263c | 1715 | if (meth_str.name == sel) |
1abf022c AF |
1716 | /* FIXME: hppa arch was doing a pointer dereference |
1717 | here. There needs to be a better way to do that. */ | |
1718 | return meth_str.imp; | |
d2e6263c MS |
1719 | } |
1720 | mlistnum++; | |
b81654f1 | 1721 | } |
d2e6263c | 1722 | subclass = class_str.super_class; |
b81654f1 | 1723 | } |
b81654f1 MS |
1724 | |
1725 | return 0; | |
1726 | } | |
1727 | ||
b9362cc7 | 1728 | static CORE_ADDR |
e17a4113 UW |
1729 | find_implementation (struct gdbarch *gdbarch, |
1730 | CORE_ADDR object, CORE_ADDR sel) | |
b81654f1 MS |
1731 | { |
1732 | struct objc_object ostr; | |
1733 | ||
d2e6263c MS |
1734 | if (object == 0) |
1735 | return 0; | |
e17a4113 | 1736 | read_objc_object (gdbarch, object, &ostr); |
d2e6263c MS |
1737 | if (ostr.isa == 0) |
1738 | return 0; | |
b81654f1 | 1739 | |
e17a4113 | 1740 | return find_implementation_from_class (gdbarch, ostr.isa, sel); |
b81654f1 MS |
1741 | } |
1742 | ||
1743 | static int | |
1744 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1745 | { | |
5ed92fa8 UW |
1746 | struct frame_info *frame = get_current_frame (); |
1747 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1748 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1749 | ||
b81654f1 MS |
1750 | CORE_ADDR object; |
1751 | CORE_ADDR sel; | |
1752 | CORE_ADDR res; | |
1753 | ||
5ed92fa8 UW |
1754 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1755 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1756 | |
e17a4113 | 1757 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1758 | if (new_pc != 0) |
1759 | *new_pc = res; | |
1760 | if (res == 0) | |
1761 | return 1; | |
b81654f1 MS |
1762 | return 0; |
1763 | } | |
1764 | ||
1765 | static int | |
1766 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1767 | { | |
5ed92fa8 UW |
1768 | struct frame_info *frame = get_current_frame (); |
1769 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1770 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1771 | ||
b81654f1 MS |
1772 | CORE_ADDR object; |
1773 | CORE_ADDR sel; | |
1774 | CORE_ADDR res; | |
1775 | ||
5ed92fa8 UW |
1776 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1777 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1778 | |
e17a4113 | 1779 | res = find_implementation (gdbarch, object, sel); |
d2e6263c MS |
1780 | if (new_pc != 0) |
1781 | *new_pc = res; | |
1782 | if (res == 0) | |
1783 | return 1; | |
b81654f1 MS |
1784 | return 0; |
1785 | } | |
1786 | ||
1787 | static int | |
1788 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1789 | { | |
5ed92fa8 UW |
1790 | struct frame_info *frame = get_current_frame (); |
1791 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1792 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1793 | ||
b81654f1 MS |
1794 | struct objc_super sstr; |
1795 | ||
1796 | CORE_ADDR super; | |
1797 | CORE_ADDR sel; | |
1798 | CORE_ADDR res; | |
1799 | ||
5ed92fa8 UW |
1800 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1801 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 | 1802 | |
e17a4113 | 1803 | read_objc_super (gdbarch, super, &sstr); |
d2e6263c MS |
1804 | if (sstr.class == 0) |
1805 | return 0; | |
b81654f1 | 1806 | |
e17a4113 | 1807 | res = find_implementation_from_class (gdbarch, sstr.class, sel); |
d2e6263c MS |
1808 | if (new_pc != 0) |
1809 | *new_pc = res; | |
1810 | if (res == 0) | |
1811 | return 1; | |
b81654f1 MS |
1812 | return 0; |
1813 | } | |
1814 | ||
1815 | static int | |
1816 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1817 | { | |
5ed92fa8 UW |
1818 | struct frame_info *frame = get_current_frame (); |
1819 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1820 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1821 | ||
b81654f1 MS |
1822 | struct objc_super sstr; |
1823 | ||
1824 | CORE_ADDR super; | |
1825 | CORE_ADDR sel; | |
1826 | CORE_ADDR res; | |
1827 | ||
5ed92fa8 UW |
1828 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1829 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 | 1830 | |
e17a4113 | 1831 | read_objc_super (gdbarch, super, &sstr); |
d2e6263c MS |
1832 | if (sstr.class == 0) |
1833 | return 0; | |
b81654f1 | 1834 | |
e17a4113 | 1835 | res = find_implementation_from_class (gdbarch, sstr.class, sel); |
d2e6263c MS |
1836 | if (new_pc != 0) |
1837 | *new_pc = res; | |
1838 | if (res == 0) | |
1839 | return 1; | |
b81654f1 MS |
1840 | return 0; |
1841 | } | |
57a9e6af PP |
1842 | |
1843 | void | |
1844 | _initialize_objc_lang (void) | |
1845 | { | |
1846 | objc_objfile_data = register_objfile_data (); | |
1847 | } |