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b81654f1 MS |
1 | /* Objective C language support routines for GDB, the GNU debugger. |
2 | Copyright 1996 NeXT Software, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "gdbtypes.h" | |
23 | #include "expression.h" | |
24 | #include "parser-defs.h" | |
25 | #include "language.h" | |
26 | #include "objc-lang.h" | |
27 | #include "complaints.h" | |
28 | #include "value.h" | |
29 | #include "symfile.h" | |
30 | #include "objfiles.h" | |
31 | #include "string.h" /* for strchr */ | |
32 | #include "target.h" /* for target_has_execution */ | |
33 | #include "gdbcore.h" | |
34 | #include "gdbcmd.h" | |
35 | #include "frame.h" | |
36 | #include "gdb_regex.h" | |
37 | #include "regcache.h" | |
38 | ||
39 | #include <ctype.h> | |
40 | ||
41 | struct objc_object { | |
42 | CORE_ADDR isa; | |
43 | }; | |
44 | ||
45 | struct objc_class { | |
46 | CORE_ADDR isa; | |
47 | CORE_ADDR super_class; | |
48 | CORE_ADDR name; | |
49 | long version; | |
50 | long info; | |
51 | long instance_size; | |
52 | CORE_ADDR ivars; | |
53 | CORE_ADDR methods; | |
54 | CORE_ADDR cache; | |
55 | CORE_ADDR protocols; | |
56 | }; | |
57 | ||
58 | struct objc_super { | |
59 | CORE_ADDR receiver; | |
60 | CORE_ADDR class; | |
61 | }; | |
62 | ||
63 | struct objc_method { | |
64 | CORE_ADDR name; | |
65 | CORE_ADDR types; | |
66 | CORE_ADDR imp; | |
67 | }; | |
68 | ||
69 | /* Complaints about ObjC classes, selectors, etc. */ | |
70 | ||
71 | static struct complaint noclass_lookup_complaint = | |
72 | {"no way to lookup Objective-C classes", 0, 0}; | |
73 | ||
74 | static struct complaint nosel_lookup_complaint = | |
75 | {"no way to lookup Objective-C selectors", 0, 0}; | |
76 | ||
77 | ||
78 | #if (!defined __GNUC__ || __GNUC__ < 2 || __GNUC_MINOR__ < (defined __cplusplus ? 6 : 4)) | |
79 | #define __CHECK_FUNCTION ((__const char *) 0) | |
80 | #else | |
81 | #define __CHECK_FUNCTION __PRETTY_FUNCTION__ | |
82 | #endif | |
83 | ||
84 | #define CHECK(expression) \ | |
85 | ((void) ((expression) ? 0 : gdb_check (#expression, __FILE__, __LINE__, \ | |
86 | __CHECK_FUNCTION))) | |
87 | ||
88 | #define CHECK_FATAL(expression) \ | |
89 | ((void) ((expression) ? 0 : gdb_check_fatal (#expression, __FILE__, \ | |
90 | __LINE__, __CHECK_FUNCTION))) | |
91 | ||
92 | void | |
93 | gdb_check (const char *str, const char *file, unsigned int line, | |
94 | const char *func) | |
95 | { | |
96 | error ("assertion failure on line %u of \"%s\" in function \"%s\": %s\n", | |
97 | line, file, func, str); | |
98 | } | |
99 | ||
100 | void | |
101 | gdb_check_fatal (const char *str, const char *file, unsigned int line, | |
102 | const char *func) | |
103 | { | |
104 | internal_error (file, line, | |
105 | "assertion failure in function \"%s\": %s\n", func, str); | |
106 | } | |
107 | ||
108 | /* Lookup a structure type named "struct NAME", | |
109 | visible in lexical block BLOCK. | |
110 | If NOERR is nonzero, return zero if NAME is not suitably defined. */ | |
111 | ||
112 | struct symbol * | |
113 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
114 | { | |
115 | register struct symbol *sym; | |
116 | ||
117 | sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0, (struct symtab **) NULL); | |
118 | ||
119 | if (sym == NULL) | |
120 | { | |
121 | if (noerr) | |
122 | return 0; | |
123 | else | |
124 | error ("No struct type named %s.", name); | |
125 | } | |
126 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
127 | { | |
128 | if (noerr) | |
129 | return 0; | |
130 | else | |
131 | error ("This context has class, union or enum %s, not a struct.", name); | |
132 | } | |
133 | return sym; | |
134 | } | |
135 | ||
136 | CORE_ADDR | |
137 | lookup_objc_class (char *classname) | |
138 | { | |
139 | struct value * function, *classval; | |
140 | ||
141 | if (! target_has_execution) | |
142 | { | |
143 | /* can't call into inferior to lookup class */ | |
144 | return 0; | |
145 | } | |
146 | ||
147 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
148 | function = find_function_in_inferior("objc_lookUpClass"); | |
149 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) | |
150 | function = find_function_in_inferior("objc_lookup_class"); | |
151 | else | |
152 | { | |
153 | complain (&noclass_lookup_complaint, 0); | |
154 | return 0; | |
155 | } | |
156 | ||
157 | classval = value_string (classname, strlen (classname) + 1); | |
158 | classval = value_coerce_array (classval); | |
159 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
160 | 1, &classval)); | |
161 | } | |
162 | ||
163 | int | |
164 | lookup_child_selector (char *selname) | |
165 | { | |
166 | struct value * function, *selstring; | |
167 | ||
168 | if (! target_has_execution) | |
169 | { | |
170 | /* can't call into inferior to lookup selector */ | |
171 | return 0; | |
172 | } | |
173 | ||
174 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
175 | function = find_function_in_inferior("sel_getUid"); | |
176 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) | |
177 | function = find_function_in_inferior("sel_get_any_uid"); | |
178 | else | |
179 | { | |
180 | complain (&nosel_lookup_complaint, 0); | |
181 | return 0; | |
182 | } | |
183 | ||
184 | selstring = value_coerce_array (value_string (selname, strlen (selname) + 1)); | |
185 | return value_as_long (call_function_by_hand (function, 1, &selstring)); | |
186 | } | |
187 | ||
188 | struct value * | |
189 | value_nsstring (char *ptr, int len) | |
190 | { | |
191 | struct value *stringValue[3]; | |
192 | struct value *function, *nsstringValue; | |
193 | struct symbol *sym; | |
194 | struct type *type; | |
195 | ||
196 | if (!target_has_execution) | |
197 | return 0; /* can't call into inferior to create NSString */ | |
198 | ||
199 | if (!(sym = lookup_struct_typedef("NSString", 0, 1)) && | |
200 | !(sym = lookup_struct_typedef("NXString", 0, 1))) | |
201 | type = lookup_pointer_type(builtin_type_void); | |
202 | else | |
203 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
204 | ||
205 | stringValue[2] = value_string(ptr, len); | |
206 | stringValue[2] = value_coerce_array(stringValue[2]); | |
207 | /* _NSNewStringFromCString replaces "istr" after Lantern2A */ | |
208 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) | |
209 | { | |
210 | function = find_function_in_inferior("_NSNewStringFromCString"); | |
211 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
212 | } | |
213 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
214 | { | |
215 | function = find_function_in_inferior("istr"); | |
216 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
217 | } | |
218 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
219 | { | |
220 | function = find_function_in_inferior("+[NSString stringWithCString:]"); | |
221 | stringValue[0] = value_from_longest | |
222 | (builtin_type_long, lookup_objc_class ("NSString")); | |
223 | stringValue[1] = value_from_longest | |
224 | (builtin_type_long, lookup_child_selector ("stringWithCString:")); | |
225 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); | |
226 | } | |
227 | else | |
228 | error ("NSString: internal error -- no way to create new NSString"); | |
229 | ||
230 | VALUE_TYPE(nsstringValue) = type; | |
231 | return nsstringValue; | |
232 | } | |
233 | ||
234 | /* Objective C name demangling */ | |
235 | ||
236 | char * | |
237 | objc_demangle (const char *mangled) | |
238 | { | |
239 | char *demangled, *cp; | |
240 | ||
241 | if (mangled[0] == '_' && | |
242 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
243 | mangled[2] == '_') | |
244 | { | |
245 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
246 | ||
247 | if (mangled[1] == 'i') | |
248 | *cp++ = '-'; /* for instance method */ | |
249 | else | |
250 | *cp++ = '+'; /* for class method */ | |
251 | ||
252 | *cp++ = '['; /* opening left brace */ | |
253 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
254 | ||
255 | while (*cp && *cp == '_') | |
256 | cp++; /* skip any initial underbars in class name */ | |
257 | ||
258 | if (!(cp = strchr(cp, '_'))) /* find first non-initial underbar */ | |
259 | { | |
260 | free(demangled); /* not mangled name */ | |
261 | return NULL; | |
262 | } | |
263 | if (cp[1] == '_') { /* easy case: no category name */ | |
264 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
265 | strcpy(cp, mangled + (cp - demangled) + 2); | |
266 | } | |
267 | else { | |
268 | *cp++ = '('; /* less easy case: category name */ | |
269 | if (!(cp = strchr(cp, '_'))) | |
270 | { | |
271 | free(demangled); /* not mangled name */ | |
272 | return NULL; | |
273 | } | |
274 | *cp++ = ')'; | |
275 | *cp++ = ' '; /* overwriting 1st char of method name... */ | |
276 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ | |
277 | } | |
278 | ||
279 | while (*cp && *cp == '_') | |
280 | cp++; /* skip any initial underbars in method name */ | |
281 | ||
282 | for (; *cp; cp++) | |
283 | if (*cp == '_') | |
284 | *cp = ':'; /* replace remaining '_' with ':' */ | |
285 | ||
286 | *cp++ = ']'; /* closing right brace */ | |
287 | *cp++ = 0; /* string terminator */ | |
288 | return demangled; | |
289 | } | |
290 | else | |
291 | return NULL; /* not an objc mangled name */ | |
292 | } | |
293 | ||
294 | /* Print the character C on STREAM as part of the contents of a literal | |
295 | string whose delimiter is QUOTER. Note that that format for printing | |
296 | characters and strings is language specific. */ | |
297 | ||
298 | static void | |
299 | objc_emit_char (register int c, struct ui_file *stream, int quoter) | |
300 | { | |
301 | ||
302 | c &= 0xFF; /* Avoid sign bit follies */ | |
303 | ||
304 | if (PRINT_LITERAL_FORM (c)) | |
305 | { | |
306 | if (c == '\\' || c == quoter) | |
307 | { | |
308 | fputs_filtered ("\\", stream); | |
309 | } | |
310 | fprintf_filtered (stream, "%c", c); | |
311 | } | |
312 | else | |
313 | { | |
314 | switch (c) | |
315 | { | |
316 | case '\n': | |
317 | fputs_filtered ("\\n", stream); | |
318 | break; | |
319 | case '\b': | |
320 | fputs_filtered ("\\b", stream); | |
321 | break; | |
322 | case '\t': | |
323 | fputs_filtered ("\\t", stream); | |
324 | break; | |
325 | case '\f': | |
326 | fputs_filtered ("\\f", stream); | |
327 | break; | |
328 | case '\r': | |
329 | fputs_filtered ("\\r", stream); | |
330 | break; | |
331 | case '\033': | |
332 | fputs_filtered ("\\e", stream); | |
333 | break; | |
334 | case '\007': | |
335 | fputs_filtered ("\\a", stream); | |
336 | break; | |
337 | default: | |
338 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
339 | break; | |
340 | } | |
341 | } | |
342 | } | |
343 | ||
344 | static void | |
345 | objc_printchar (int c, struct ui_file *stream) | |
346 | { | |
347 | fputs_filtered ("'", stream); | |
348 | objc_emit_char (c, stream, '\''); | |
349 | fputs_filtered ("'", stream); | |
350 | } | |
351 | ||
352 | /* Print the character string STRING, printing at most LENGTH characters. | |
353 | Printing stops early if the number hits print_max; repeat counts | |
354 | are printed as appropriate. Print ellipses at the end if we | |
355 | had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. */ | |
356 | ||
357 | static void | |
358 | objc_printstr (struct ui_file *stream, char *string, unsigned int length, | |
359 | int force_ellipses) | |
360 | { | |
361 | register unsigned int i; | |
362 | unsigned int things_printed = 0; | |
363 | int in_quotes = 0; | |
364 | int need_comma = 0; | |
365 | extern int inspect_it; | |
366 | extern int repeat_count_threshold; | |
367 | extern int print_max; | |
368 | ||
369 | /* If the string was not truncated due to `set print elements', and | |
370 | the last byte of it is a null, we don't print that, in traditional C | |
371 | style. */ | |
372 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') | |
373 | length--; | |
374 | ||
375 | if (length == 0) | |
376 | { | |
377 | fputs_filtered ("\"\"", stream); | |
378 | return; | |
379 | } | |
380 | ||
381 | for (i = 0; i < length && things_printed < print_max; ++i) | |
382 | { | |
383 | /* Position of the character we are examining | |
384 | to see whether it is repeated. */ | |
385 | unsigned int rep1; | |
386 | /* Number of repetitions we have detected so far. */ | |
387 | unsigned int reps; | |
388 | ||
389 | QUIT; | |
390 | ||
391 | if (need_comma) | |
392 | { | |
393 | fputs_filtered (", ", stream); | |
394 | need_comma = 0; | |
395 | } | |
396 | ||
397 | rep1 = i + 1; | |
398 | reps = 1; | |
399 | while (rep1 < length && string[rep1] == string[i]) | |
400 | { | |
401 | ++rep1; | |
402 | ++reps; | |
403 | } | |
404 | ||
405 | if (reps > repeat_count_threshold) | |
406 | { | |
407 | if (in_quotes) | |
408 | { | |
409 | if (inspect_it) | |
410 | fputs_filtered ("\\\", ", stream); | |
411 | else | |
412 | fputs_filtered ("\", ", stream); | |
413 | in_quotes = 0; | |
414 | } | |
415 | objc_printchar (string[i], stream); | |
416 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
417 | i = rep1 - 1; | |
418 | things_printed += repeat_count_threshold; | |
419 | need_comma = 1; | |
420 | } | |
421 | else | |
422 | { | |
423 | if (!in_quotes) | |
424 | { | |
425 | if (inspect_it) | |
426 | fputs_filtered ("\\\"", stream); | |
427 | else | |
428 | fputs_filtered ("\"", stream); | |
429 | in_quotes = 1; | |
430 | } | |
431 | objc_emit_char (string[i], stream, '"'); | |
432 | ++things_printed; | |
433 | } | |
434 | } | |
435 | ||
436 | /* Terminate the quotes if necessary. */ | |
437 | if (in_quotes) | |
438 | { | |
439 | if (inspect_it) | |
440 | fputs_filtered ("\\\"", stream); | |
441 | else | |
442 | fputs_filtered ("\"", stream); | |
443 | } | |
444 | ||
445 | if (force_ellipses || i < length) | |
446 | fputs_filtered ("...", stream); | |
447 | } | |
448 | ||
449 | /* Create a fundamental C type using default reasonable for the current | |
450 | target machine. | |
451 | ||
452 | Some object/debugging file formats (DWARF version 1, COFF, etc) do not | |
453 | define fundamental types such as "int" or "double". Others (stabs or | |
454 | DWARF version 2, etc) do define fundamental types. For the formats which | |
455 | don't provide fundamental types, gdb can create such types using this | |
456 | function. | |
457 | ||
458 | FIXME: Some compilers distinguish explicitly signed integral types | |
459 | (signed short, signed int, signed long) from "regular" integral types | |
460 | (short, int, long) in the debugging information. There is some dis- | |
461 | agreement as to how useful this feature is. In particular, gcc does | |
462 | not support this. Also, only some debugging formats allow the | |
463 | distinction to be passed on to a debugger. For now, we always just | |
464 | use "short", "int", or "long" as the type name, for both the implicit | |
465 | and explicitly signed types. This also makes life easier for the | |
466 | gdb test suite since we don't have to account for the differences | |
467 | in output depending upon what the compiler and debugging format | |
468 | support. We will probably have to re-examine the issue when gdb | |
469 | starts taking it's fundamental type information directly from the | |
470 | debugging information supplied by the compiler. fnf@cygnus.com */ | |
471 | ||
472 | static struct type * | |
473 | objc_create_fundamental_type (struct objfile *objfile, int typeid) | |
474 | { | |
475 | register struct type *type = NULL; | |
476 | ||
477 | switch (typeid) | |
478 | { | |
479 | default: | |
480 | /* FIXME: For now, if we are asked to produce a type not in this | |
481 | language, create the equivalent of a C integer type with the | |
482 | name "<?type?>". When all the dust settles from the type | |
483 | reconstruction work, this should probably become an error. */ | |
484 | type = init_type (TYPE_CODE_INT, | |
485 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
486 | 0, "<?type?>", objfile); | |
487 | warning ("internal error: no C/C++ fundamental type %d", typeid); | |
488 | break; | |
489 | case FT_VOID: | |
490 | type = init_type (TYPE_CODE_VOID, | |
491 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
492 | 0, "void", objfile); | |
493 | break; | |
494 | case FT_CHAR: | |
495 | type = init_type (TYPE_CODE_INT, | |
496 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
497 | 0, "char", objfile); | |
498 | break; | |
499 | case FT_SIGNED_CHAR: | |
500 | type = init_type (TYPE_CODE_INT, | |
501 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
502 | 0, "signed char", objfile); | |
503 | break; | |
504 | case FT_UNSIGNED_CHAR: | |
505 | type = init_type (TYPE_CODE_INT, | |
506 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
507 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); | |
508 | break; | |
509 | case FT_SHORT: | |
510 | type = init_type (TYPE_CODE_INT, | |
511 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
512 | 0, "short", objfile); | |
513 | break; | |
514 | case FT_SIGNED_SHORT: | |
515 | type = init_type (TYPE_CODE_INT, | |
516 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
517 | 0, "short", objfile); /* FIXME-fnf */ | |
518 | break; | |
519 | case FT_UNSIGNED_SHORT: | |
520 | type = init_type (TYPE_CODE_INT, | |
521 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
522 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); | |
523 | break; | |
524 | case FT_INTEGER: | |
525 | type = init_type (TYPE_CODE_INT, | |
526 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
527 | 0, "int", objfile); | |
528 | break; | |
529 | case FT_SIGNED_INTEGER: | |
530 | type = init_type (TYPE_CODE_INT, | |
531 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
532 | 0, "int", objfile); /* FIXME -fnf */ | |
533 | break; | |
534 | case FT_UNSIGNED_INTEGER: | |
535 | type = init_type (TYPE_CODE_INT, | |
536 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
537 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); | |
538 | break; | |
539 | case FT_LONG: | |
540 | type = init_type (TYPE_CODE_INT, | |
541 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
542 | 0, "long", objfile); | |
543 | break; | |
544 | case FT_SIGNED_LONG: | |
545 | type = init_type (TYPE_CODE_INT, | |
546 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
547 | 0, "long", objfile); /* FIXME -fnf */ | |
548 | break; | |
549 | case FT_UNSIGNED_LONG: | |
550 | type = init_type (TYPE_CODE_INT, | |
551 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
552 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); | |
553 | break; | |
554 | case FT_LONG_LONG: | |
555 | type = init_type (TYPE_CODE_INT, | |
556 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
557 | 0, "long long", objfile); | |
558 | break; | |
559 | case FT_SIGNED_LONG_LONG: | |
560 | type = init_type (TYPE_CODE_INT, | |
561 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
562 | 0, "signed long long", objfile); | |
563 | break; | |
564 | case FT_UNSIGNED_LONG_LONG: | |
565 | type = init_type (TYPE_CODE_INT, | |
566 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
567 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
568 | break; | |
569 | case FT_FLOAT: | |
570 | type = init_type (TYPE_CODE_FLT, | |
571 | TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
572 | 0, "float", objfile); | |
573 | break; | |
574 | case FT_DBL_PREC_FLOAT: | |
575 | type = init_type (TYPE_CODE_FLT, | |
576 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
577 | 0, "double", objfile); | |
578 | break; | |
579 | case FT_EXT_PREC_FLOAT: | |
580 | type = init_type (TYPE_CODE_FLT, | |
581 | TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, | |
582 | 0, "long double", objfile); | |
583 | break; | |
584 | } | |
585 | return (type); | |
586 | } | |
587 | ||
588 | ||
589 | /* Table mapping opcodes into strings for printing operators | |
590 | and precedences of the operators. */ | |
591 | ||
592 | static const struct op_print objc_op_print_tab[] = | |
593 | { | |
594 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
595 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
596 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
597 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
598 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
599 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
600 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
601 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
602 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
603 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
604 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
605 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
606 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
607 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
608 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
609 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
610 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
611 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
612 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
613 | {"%", BINOP_REM, PREC_MUL, 0}, | |
614 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
615 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
616 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
617 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
618 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
619 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
620 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
621 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
622 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
623 | {NULL, 0, 0, 0} | |
624 | }; | |
625 | ||
626 | struct type ** const (objc_builtin_types[]) = | |
627 | { | |
628 | &builtin_type_int, | |
629 | &builtin_type_long, | |
630 | &builtin_type_short, | |
631 | &builtin_type_char, | |
632 | &builtin_type_float, | |
633 | &builtin_type_double, | |
634 | &builtin_type_void, | |
635 | &builtin_type_long_long, | |
636 | &builtin_type_signed_char, | |
637 | &builtin_type_unsigned_char, | |
638 | &builtin_type_unsigned_short, | |
639 | &builtin_type_unsigned_int, | |
640 | &builtin_type_unsigned_long, | |
641 | &builtin_type_unsigned_long_long, | |
642 | &builtin_type_long_double, | |
643 | &builtin_type_complex, | |
644 | &builtin_type_double_complex, | |
645 | 0 | |
646 | }; | |
647 | ||
648 | const struct language_defn objc_language_defn = { | |
649 | "objective-c", /* Language name */ | |
650 | language_objc, | |
651 | objc_builtin_types, | |
652 | range_check_off, | |
653 | type_check_off, | |
654 | case_sensitive_on, | |
655 | objc_parse, | |
656 | objc_error, | |
657 | evaluate_subexp_standard, | |
658 | objc_printchar, /* Print a character constant */ | |
659 | objc_printstr, /* Function to print string constant */ | |
660 | objc_emit_char, | |
661 | objc_create_fundamental_type, /* Create fundamental type in this language */ | |
662 | c_print_type, /* Print a type using appropriate syntax */ | |
663 | c_val_print, /* Print a value using appropriate syntax */ | |
664 | c_value_print, /* Print a top-level value */ | |
665 | {"", "", "", ""}, /* Binary format info */ | |
666 | {"0%lo", "0", "o", ""}, /* Octal format info */ | |
667 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
668 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
669 | objc_op_print_tab, /* expression operators for printing */ | |
670 | 1, /* c-style arrays */ | |
671 | 0, /* String lower bound */ | |
672 | &builtin_type_char, /* Type of string elements */ | |
673 | LANG_MAGIC | |
674 | }; | |
675 | ||
676 | /* | |
677 | * ObjC: | |
678 | * Following functions help construct Objective C message calls | |
679 | */ | |
680 | ||
681 | struct selname /* for parsing Objective C */ | |
682 | { | |
683 | struct selname *next; | |
684 | char *msglist_sel; | |
685 | int msglist_len; | |
686 | }; | |
687 | ||
688 | static int msglist_len; | |
689 | static struct selname *selname_chain; | |
690 | static char *msglist_sel; | |
691 | ||
692 | void | |
693 | start_msglist(void) | |
694 | { | |
695 | register struct selname *new = | |
696 | (struct selname *) xmalloc (sizeof (struct selname)); | |
697 | ||
698 | new->next = selname_chain; | |
699 | new->msglist_len = msglist_len; | |
700 | new->msglist_sel = msglist_sel; | |
701 | msglist_len = 0; | |
702 | msglist_sel = (char *)xmalloc(1); | |
703 | *msglist_sel = 0; | |
704 | selname_chain = new; | |
705 | } | |
706 | ||
707 | void | |
708 | add_msglist(struct stoken *str, int addcolon) | |
709 | { | |
710 | char *s, *p; | |
711 | int len, plen; | |
712 | ||
713 | if (str == 0) { /* unnamed arg, or... */ | |
714 | if (addcolon == 0) { /* variable number of args */ | |
715 | msglist_len++; | |
716 | return; | |
717 | } | |
718 | p = ""; | |
719 | plen = 0; | |
720 | } else { | |
721 | p = str->ptr; | |
722 | plen = str->length; | |
723 | } | |
724 | len = plen + strlen(msglist_sel) + 2; | |
725 | s = (char *)xmalloc(len); | |
726 | strcpy(s, msglist_sel); | |
727 | strncat(s, p, plen); | |
728 | free(msglist_sel); | |
729 | msglist_sel = s; | |
730 | if (addcolon) { | |
731 | s[len-2] = ':'; | |
732 | s[len-1] = 0; | |
733 | msglist_len++; | |
734 | } else | |
735 | s[len-2] = '\0'; | |
736 | } | |
737 | ||
738 | int | |
739 | end_msglist(void) | |
740 | { | |
741 | register int val = msglist_len; | |
742 | register struct selname *sel = selname_chain; | |
743 | register char *p = msglist_sel; | |
744 | int selid; | |
745 | ||
746 | selname_chain = sel->next; | |
747 | msglist_len = sel->msglist_len; | |
748 | msglist_sel = sel->msglist_sel; | |
749 | selid = lookup_child_selector(p); | |
750 | if (!selid) | |
751 | error("Can't find selector \"%s\"", p); | |
752 | write_exp_elt_longcst (selid); | |
753 | free(p); | |
754 | write_exp_elt_longcst (val);/* Number of args */ | |
755 | free(sel); | |
756 | ||
757 | return val; | |
758 | } | |
759 | ||
760 | /* | |
761 | * Function: specialcmp (char *a, char *b) | |
762 | * | |
763 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
764 | * Used for qsorting lists of objc methods (either by class or selector) | |
765 | */ | |
766 | ||
767 | int specialcmp(char *a, char *b) | |
768 | { | |
769 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
770 | { | |
771 | if (*a != *b) | |
772 | return *a - *b; | |
773 | a++, b++; | |
774 | } | |
775 | if (*a && *a != ' ' && *a != ']') | |
776 | return 1; /* a is longer therefore greater */ | |
777 | if (*b && *b != ' ' && *b != ']') | |
778 | return -1; /* a is shorter therefore lesser */ | |
779 | return 0; /* a and b are identical */ | |
780 | } | |
781 | ||
782 | /* | |
783 | * Function: compare_selectors (void *, void *) | |
784 | * | |
785 | * Comparison function for use with qsort. Arguments are symbols or msymbols | |
786 | * Compares selector part of objc method name alphabetically. | |
787 | */ | |
788 | ||
789 | static int | |
790 | compare_selectors (a, b) | |
791 | void *a; | |
792 | void *b; | |
793 | { | |
794 | char *aname, *bname; | |
795 | ||
796 | if ((aname = SYMBOL_SOURCE_NAME (*(struct symbol **) a)) == NULL || | |
797 | (bname = SYMBOL_SOURCE_NAME (*(struct symbol **) b)) == NULL) | |
798 | error ("internal: compare_selectors(1)"); | |
799 | ||
800 | if ((aname = strchr(aname, ' ')) == NULL || | |
801 | (bname = strchr(bname, ' ')) == NULL) | |
802 | error ("internal: compare_selectors(2)"); | |
803 | ||
804 | return specialcmp (aname+1, bname+1); | |
805 | } | |
806 | ||
807 | /* | |
808 | * Function: selectors_info (regexp, from_tty) | |
809 | * | |
810 | * Implements the "Info selectors" command. Takes an optional regexp arg. | |
811 | * Lists all objective c selectors that match the regexp. Works by | |
812 | * grepping thru all symbols for objective c methods. Output list is | |
813 | * sorted and uniqued. | |
814 | */ | |
815 | ||
816 | static void | |
817 | selectors_info (char *regexp, int from_tty) | |
818 | { | |
819 | struct objfile *objfile; | |
820 | struct minimal_symbol *msymbol; | |
821 | char *name; | |
822 | char *val; | |
823 | int matches = 0; | |
824 | int maxlen = 0; | |
825 | int ix; | |
826 | char myregexp[2048]; | |
827 | char asel[256]; | |
828 | struct symbol **sym_arr; | |
829 | int plusminus = 0; | |
830 | ||
831 | if (regexp == NULL) | |
832 | strcpy(myregexp, ".*]"); /* null input, match all objc methods */ | |
833 | else | |
834 | { | |
835 | if (*regexp == '+' || *regexp == '-') /* if regexp starts with +/- */ | |
836 | { /* user wants only class methods or only instance methods */ | |
837 | plusminus = *regexp++; | |
838 | while (*regexp == ' ' || *regexp == '\t') | |
839 | regexp++; | |
840 | } | |
841 | if (*regexp == '\0') | |
842 | strcpy(myregexp, ".*]"); | |
843 | else | |
844 | { | |
845 | strcpy(myregexp, regexp); | |
846 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
847 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
848 | else | |
849 | strcat(myregexp, ".*]"); | |
850 | } | |
851 | } | |
852 | ||
853 | if (regexp != NULL) | |
854 | if (0 != (val = re_comp (myregexp))) | |
855 | error ("Invalid regexp (%s): %s", val, regexp); | |
856 | ||
857 | /* first time thru is JUST to get max length and count */ | |
858 | ALL_MSYMBOLS (objfile, msymbol) | |
859 | { | |
860 | QUIT; | |
861 | if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL) | |
862 | name = SYMBOL_NAME (msymbol); | |
863 | if (name && | |
864 | (name[0] == '-' || name[0] == '+') && | |
865 | name[1] == '[') /* got a method name */ | |
866 | { | |
867 | if (plusminus && name[0] != plusminus) | |
868 | continue; /* filter for class/instance methods */ | |
869 | name = (char *) strchr(name+2, ' '); /* find selector part */ | |
870 | if (regexp == NULL || re_exec(++name) != 0) | |
871 | { | |
872 | char *mystart = name; | |
873 | char *myend = (char *) strchr(mystart, ']'); | |
874 | ||
875 | if (myend && (myend - mystart > maxlen)) | |
876 | maxlen = myend - mystart; /* get longest selector */ | |
877 | matches++; | |
878 | } | |
879 | } | |
880 | } | |
881 | if (matches) | |
882 | { | |
883 | printf_filtered ("Selectors matching \"%s\":\n\n", | |
884 | regexp ? regexp : "*"); | |
885 | ||
886 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
887 | matches = 0; | |
888 | ALL_MSYMBOLS (objfile, msymbol) | |
889 | { | |
890 | QUIT; | |
891 | if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL) | |
892 | name = SYMBOL_NAME (msymbol); | |
893 | if (name && | |
894 | (name[0] == '-' || name[0] == '+') && | |
895 | name[1] == '[') /* got a method name */ | |
896 | { | |
897 | if (plusminus && name[0] != plusminus) | |
898 | continue; /* filter for class/instance methods */ | |
899 | name = (char *) strchr(name+2, ' '); /* find selector part */ | |
900 | if (regexp == NULL || re_exec(++name) != 0) | |
901 | sym_arr[matches++] = (struct symbol *) msymbol; | |
902 | } | |
903 | } | |
904 | ||
905 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
906 | compare_selectors); | |
907 | asel[0] = 0; /* to prevent compare on first iteration */ | |
908 | for (ix = 0; ix < matches; ix++) /* now do the output */ | |
909 | { | |
910 | char *p = asel; | |
911 | ||
912 | QUIT; | |
913 | if ((name = SYMBOL_DEMANGLED_NAME (sym_arr[ix])) == NULL) | |
914 | name = SYMBOL_NAME (sym_arr[ix]); | |
915 | name = strchr (name, ' ') + 1; | |
916 | if (p[0] && specialcmp(name, p) == 0) | |
917 | continue; /* seen this one already (not unique) */ | |
918 | ||
919 | while (*name && *name != ']') /* copy selector part */ | |
920 | *p++ = *name++; | |
921 | *p++ = '\0'; | |
922 | puts_filtered_tabular(asel, maxlen + 1, 0); /* print in columns */ | |
923 | } | |
924 | begin_line(); | |
925 | } | |
926 | else | |
927 | printf_filtered ("No selectors matching \"%s\"\n", regexp ? regexp : "*"); | |
928 | } | |
929 | ||
930 | /* | |
931 | * Function: compare_classes (void *, void *) | |
932 | * | |
933 | * Comparison function for use with qsort. Arguments are symbols or msymbols | |
934 | * Compares class part of objc method name alphabetically. | |
935 | */ | |
936 | ||
937 | static int | |
938 | compare_classes (a, b) | |
939 | void *a; | |
940 | void *b; | |
941 | { | |
942 | char *aname, *bname; | |
943 | ||
944 | if ((aname = SYMBOL_SOURCE_NAME (*(struct symbol **) a)) == NULL || | |
945 | (bname = SYMBOL_SOURCE_NAME (*(struct symbol **) b)) == NULL) | |
946 | error ("internal: compare_classes(1)"); | |
947 | ||
948 | return specialcmp (aname+1, bname+1); | |
949 | } | |
950 | ||
951 | /* | |
952 | * Function: classes_info(regexp, from_tty) | |
953 | * | |
954 | * Implements the "info classes" command for objective c classes. | |
955 | * Lists all objective c classes that match the optional regexp. | |
956 | * Works by grepping thru the list of objective c methods. | |
957 | * List will be sorted and uniqued (since one class may have many methods). | |
958 | * BUGS: will not list a class that has no methods. | |
959 | */ | |
960 | ||
961 | static void | |
962 | classes_info (char *regexp, int from_tty) | |
963 | { | |
964 | struct objfile *objfile; | |
965 | struct minimal_symbol *msymbol; | |
966 | char *name; | |
967 | char *val; | |
968 | int matches = 0; | |
969 | int maxlen = 0; | |
970 | int ix; | |
971 | char myregexp[2048]; | |
972 | char aclass[256]; | |
973 | struct symbol **sym_arr; | |
974 | ||
975 | if (regexp == NULL) | |
976 | strcpy(myregexp, ".* "); /* null input: match all objc classes */ | |
977 | else | |
978 | { | |
979 | strcpy(myregexp, regexp); | |
980 | if (myregexp[strlen(myregexp) - 1] == '$') | |
981 | /* in the method name, the end of the class name is marked by ' ' */ | |
982 | myregexp[strlen(myregexp) - 1] = ' '; | |
983 | else | |
984 | strcat(myregexp, ".* "); | |
985 | } | |
986 | ||
987 | if (regexp != NULL) | |
988 | if (0 != (val = re_comp (myregexp))) | |
989 | error ("Invalid regexp (%s): %s", val, regexp); | |
990 | ||
991 | /* first time thru is JUST to get max length and count */ | |
992 | ALL_MSYMBOLS (objfile, msymbol) | |
993 | { | |
994 | QUIT; | |
995 | if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL) | |
996 | name = SYMBOL_NAME (msymbol); | |
997 | if (name && | |
998 | (name[0] == '-' || name[0] == '+') && | |
999 | name[1] == '[') /* got a method name */ | |
1000 | if (regexp == NULL || re_exec(name+2) != 0) | |
1001 | { | |
1002 | char *mystart = name + 2; /* compute length of classname part */ | |
1003 | char *myend = (char *) strchr(mystart, ' '); | |
1004 | ||
1005 | if (myend && (myend - mystart > maxlen)) | |
1006 | maxlen = myend - mystart; | |
1007 | matches++; | |
1008 | } | |
1009 | } | |
1010 | if (matches) | |
1011 | { | |
1012 | printf_filtered ("Classes matching \"%s\":\n\n", | |
1013 | regexp ? regexp : "*"); | |
1014 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
1015 | matches = 0; | |
1016 | ALL_MSYMBOLS (objfile, msymbol) | |
1017 | { | |
1018 | QUIT; | |
1019 | if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL) | |
1020 | name = SYMBOL_NAME (msymbol); | |
1021 | if (name && | |
1022 | (name[0] == '-' || name[0] == '+') && | |
1023 | name[1] == '[') /* got a method name */ | |
1024 | if (regexp == NULL || re_exec(name+2) != 0) | |
1025 | sym_arr[matches++] = (struct symbol *) msymbol; | |
1026 | } | |
1027 | ||
1028 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
1029 | compare_classes); | |
1030 | aclass[0] = 0; /* to prevent compare on first iteration */ | |
1031 | for (ix = 0; ix < matches; ix++) /* now do the output */ | |
1032 | { | |
1033 | char *p = aclass; | |
1034 | ||
1035 | QUIT; | |
1036 | if ((name = SYMBOL_DEMANGLED_NAME (sym_arr[ix])) == NULL) | |
1037 | name = SYMBOL_NAME (sym_arr[ix]); | |
1038 | name += 2; | |
1039 | if (p[0] && specialcmp(name, p) == 0) | |
1040 | continue; /* seen this one already (not unique) */ | |
1041 | ||
1042 | while (*name && *name != ' ') /* copy class part of method name */ | |
1043 | *p++ = *name++; | |
1044 | *p++ = '\0'; | |
1045 | puts_filtered_tabular(aclass, maxlen + 1, 0); /* print in columns */ | |
1046 | } | |
1047 | begin_line(); | |
1048 | } | |
1049 | else | |
1050 | printf_filtered ("No classes matching \"%s\"\n", regexp ? regexp : "*"); | |
1051 | } | |
1052 | ||
1053 | /* | |
1054 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
1055 | * | |
1056 | * Input: a string representing a selector | |
1057 | * a pointer to an array of symbol pointers | |
1058 | * possibly a pointer to a symbol found by the caller. | |
1059 | * | |
1060 | * Output: number of methods that implement that selector. | |
1061 | * Side effects: The array of symbol pointers is filled with matching syms. | |
1062 | * | |
1063 | * By analogy with function "find_methods" (symtab.c), builds a list of | |
1064 | * symbols matching the ambiguous input, so that "decode_line_2" (symtab.c) | |
1065 | * can list them and ask the user to choose one or more. In this case the | |
1066 | * matches are objective c methods ("implementations") matching an objective | |
1067 | * c selector. | |
1068 | * | |
1069 | * Note that it is possible for a normal (c-style) function to have the | |
1070 | * same name as an objective c selector. To prevent the selector from | |
1071 | * eclipsing the function, we allow the caller (decode_line_1) to search | |
1072 | * for such a function first, and if it finds one, pass it in to us. We | |
1073 | * will then integrate it into the list. We also search for one here, | |
1074 | * among the minsyms. | |
1075 | * | |
1076 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be | |
1077 | * divided into two parts: debuggable (struct symbol) syms, | |
1078 | * and non_debuggable (struct minimal_symbol) syms. | |
1079 | * The debuggable ones will come first, before NUM_DEBUGGABLE | |
1080 | * (which will thus be the index of the first non-debuggable one). | |
1081 | */ | |
1082 | ||
1083 | /* | |
1084 | * Function: total_number_of_imps (char *selector); | |
1085 | * | |
1086 | * Input: a string representing a selector | |
1087 | * Output: number of methods that implement that selector. | |
1088 | * | |
1089 | * By analogy with function "total_number_of_methods", this allows | |
1090 | * decode_line_1 (symtab.c) to detect if there are objective c methods | |
1091 | * matching the input, and to allocate an array of pointers to them | |
1092 | * which can be manipulated by "decode_line_2" (also in symtab.c) | |
1093 | */ | |
1094 | ||
1095 | char * | |
1096 | parse_selector (char *method, char **selector) | |
1097 | { | |
1098 | char *s1 = NULL; | |
1099 | char *s2 = NULL; | |
1100 | int found_quote = 0; | |
1101 | ||
1102 | char *nselector = NULL; | |
1103 | ||
1104 | CHECK (selector != NULL); | |
1105 | ||
1106 | s1 = method; | |
1107 | ||
1108 | while (isspace (*s1)) | |
1109 | s1++; | |
1110 | if (*s1 == '\'') | |
1111 | { | |
1112 | found_quote = 1; | |
1113 | s1++; | |
1114 | } | |
1115 | while (isspace (*s1)) | |
1116 | s1++; | |
1117 | ||
1118 | nselector = s1; | |
1119 | s2 = s1; | |
1120 | ||
1121 | for (;;) { | |
1122 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1123 | *s1++ = *s2; | |
1124 | else if (isspace (*s2)) | |
1125 | ; | |
1126 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1127 | break; | |
1128 | else | |
1129 | return NULL; | |
1130 | s2++; | |
1131 | } | |
1132 | *s1++ = '\0'; | |
1133 | ||
1134 | while (isspace (*s2)) | |
1135 | s2++; | |
1136 | if (found_quote) | |
1137 | { | |
1138 | if (*s2 == '\'') | |
1139 | s2++; | |
1140 | while (isspace (*s2)) | |
1141 | s2++; | |
1142 | } | |
1143 | ||
1144 | if (selector != NULL) | |
1145 | *selector = nselector; | |
1146 | ||
1147 | return s2; | |
1148 | } | |
1149 | ||
1150 | char * | |
1151 | parse_method (char *method, char *type, char **class, char **category, | |
1152 | char **selector) | |
1153 | { | |
1154 | char *s1 = NULL; | |
1155 | char *s2 = NULL; | |
1156 | int found_quote = 0; | |
1157 | ||
1158 | char ntype = '\0'; | |
1159 | char *nclass = NULL; | |
1160 | char *ncategory = NULL; | |
1161 | char *nselector = NULL; | |
1162 | ||
1163 | CHECK (type != NULL); | |
1164 | CHECK (class != NULL); | |
1165 | CHECK (category != NULL); | |
1166 | CHECK (selector != NULL); | |
1167 | ||
1168 | s1 = method; | |
1169 | ||
1170 | while (isspace (*s1)) | |
1171 | s1++; | |
1172 | if (*s1 == '\'') | |
1173 | { | |
1174 | found_quote = 1; | |
1175 | s1++; | |
1176 | } | |
1177 | while (isspace (*s1)) | |
1178 | s1++; | |
1179 | ||
1180 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1181 | ntype = *s1++; | |
1182 | ||
1183 | while (isspace (*s1)) | |
1184 | s1++; | |
1185 | ||
1186 | if (*s1 != '[') | |
1187 | return NULL; | |
1188 | s1++; | |
1189 | ||
1190 | nclass = s1; | |
1191 | while (isalnum (*s1) || (*s1 == '_')) | |
1192 | s1++; | |
1193 | ||
1194 | s2 = s1; | |
1195 | while (isspace (*s2)) | |
1196 | s2++; | |
1197 | ||
1198 | if (*s2 == '(') | |
1199 | { | |
1200 | s2++; | |
1201 | while (isspace (*s2)) | |
1202 | s2++; | |
1203 | ncategory = s2; | |
1204 | while (isalnum (*s2) || (*s2 == '_')) | |
1205 | s2++; | |
1206 | *s2++ = '\0'; | |
1207 | } | |
1208 | ||
1209 | /* truncate the class name now that we're not using the open paren */ | |
1210 | *s1++ = '\0'; | |
1211 | ||
1212 | nselector = s2; | |
1213 | s1 = s2; | |
1214 | ||
1215 | for (;;) { | |
1216 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1217 | *s1++ = *s2; | |
1218 | else if (isspace (*s2)) | |
1219 | ; | |
1220 | else if (*s2 == ']') | |
1221 | break; | |
1222 | else | |
1223 | return NULL; | |
1224 | s2++; | |
1225 | } | |
1226 | *s1++ = '\0'; | |
1227 | s2++; | |
1228 | ||
1229 | while (isspace (*s2)) | |
1230 | s2++; | |
1231 | if (found_quote) | |
1232 | { | |
1233 | if (*s2 != '\'') | |
1234 | return NULL; | |
1235 | s2++; | |
1236 | while (isspace (*s2)) | |
1237 | s2++; | |
1238 | } | |
1239 | ||
1240 | if (type != NULL) | |
1241 | *type = ntype; | |
1242 | if (class != NULL) | |
1243 | *class = nclass; | |
1244 | if (category != NULL) | |
1245 | *category = ncategory; | |
1246 | if (selector != NULL) | |
1247 | *selector = nselector; | |
1248 | ||
1249 | return s2; | |
1250 | } | |
1251 | ||
1252 | void | |
1253 | find_methods (struct symtab *symtab, | |
1254 | char type, const char *class, const char *category, | |
1255 | const char *selector, | |
1256 | struct symbol **syms, unsigned int *nsym, unsigned int *ndebug) | |
1257 | { | |
1258 | struct objfile *objfile = NULL; | |
1259 | struct minimal_symbol *msymbol = NULL; | |
1260 | struct block *block = NULL; | |
1261 | struct symbol *sym = NULL; | |
1262 | ||
1263 | char *symname = NULL; | |
1264 | ||
1265 | char ntype = '\0'; | |
1266 | char *nclass = NULL; | |
1267 | char *ncategory = NULL; | |
1268 | char *nselector = NULL; | |
1269 | ||
1270 | unsigned int csym = 0; | |
1271 | unsigned int cdebug = 0; | |
1272 | ||
1273 | static char *tmp = NULL; | |
1274 | static unsigned int tmplen = 0; | |
1275 | ||
1276 | CHECK (nsym != NULL); | |
1277 | CHECK (ndebug != NULL); | |
1278 | ||
1279 | if (symtab) | |
1280 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1281 | ||
1282 | ALL_MSYMBOLS (objfile, msymbol) | |
1283 | { | |
1284 | QUIT; | |
1285 | ||
1286 | if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text)) | |
1287 | /* not a function or method */ | |
1288 | continue; | |
1289 | ||
1290 | if (symtab) | |
1291 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < block->startaddr) || | |
1292 | (SYMBOL_VALUE_ADDRESS (msymbol) >= block->endaddr)) | |
1293 | /* not in the specified symtab */ | |
1294 | continue; | |
1295 | ||
1296 | symname = SYMBOL_DEMANGLED_NAME (msymbol); | |
1297 | if (symname == NULL) | |
1298 | symname = SYMBOL_NAME (msymbol); | |
1299 | if (symname == NULL) | |
1300 | continue; | |
1301 | ||
1302 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
1303 | /* not a method name */ | |
1304 | continue; | |
1305 | ||
1306 | while ((strlen (symname) + 1) >= tmplen) | |
1307 | { | |
1308 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1309 | tmp = xrealloc (tmp, tmplen); | |
1310 | } | |
1311 | strcpy (tmp, symname); | |
1312 | ||
1313 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1314 | continue; | |
1315 | ||
1316 | if ((type != '\0') && (ntype != type)) | |
1317 | continue; | |
1318 | ||
1319 | if ((class != NULL) && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
1320 | continue; | |
1321 | ||
1322 | if ((category != NULL) && ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
1323 | continue; | |
1324 | ||
1325 | if ((selector != NULL) && ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
1326 | continue; | |
1327 | ||
1328 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1329 | if (sym != NULL) | |
1330 | { | |
1331 | const char *newsymname = SYMBOL_DEMANGLED_NAME (sym); | |
1332 | ||
1333 | if (newsymname == NULL) | |
1334 | newsymname = SYMBOL_NAME (sym); | |
1335 | if (strcmp (symname, newsymname) == 0) | |
1336 | { | |
1337 | /* found a high-level method sym: swap it into the | |
1338 | lower part of sym_arr (below num_debuggable) */ | |
1339 | if (syms != NULL) | |
1340 | { | |
1341 | syms[csym] = syms[cdebug]; | |
1342 | syms[cdebug] = sym; | |
1343 | } | |
1344 | csym++; | |
1345 | cdebug++; | |
1346 | } | |
1347 | else | |
1348 | { | |
1349 | warning ("debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
1350 | newsymname, symname); | |
1351 | if (syms != NULL) | |
1352 | syms[csym] = (struct symbol *) msymbol; | |
1353 | csym++; | |
1354 | } | |
1355 | } | |
1356 | else | |
1357 | { | |
1358 | /* found a non-debuggable method symbol */ | |
1359 | if (syms != NULL) | |
1360 | syms[csym] = (struct symbol *) msymbol; | |
1361 | csym++; | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | if (nsym != NULL) | |
1366 | *nsym = csym; | |
1367 | if (ndebug != NULL) | |
1368 | *ndebug = cdebug; | |
1369 | } | |
1370 | ||
1371 | char *find_imps (struct symtab *symtab, struct block *block, | |
1372 | char *method, struct symbol **syms, unsigned int *nsym, | |
1373 | unsigned int *ndebug) | |
1374 | { | |
1375 | char type = '\0'; | |
1376 | char *class = NULL; | |
1377 | char *category = NULL; | |
1378 | char *selector = NULL; | |
1379 | ||
1380 | unsigned int csym = 0; | |
1381 | unsigned int cdebug = 0; | |
1382 | ||
1383 | unsigned int ncsym = 0; | |
1384 | unsigned int ncdebug = 0; | |
1385 | ||
1386 | char *buf = NULL; | |
1387 | char *tmp = NULL; | |
1388 | ||
1389 | CHECK (nsym != NULL); | |
1390 | CHECK (ndebug != NULL); | |
1391 | ||
1392 | if (nsym != NULL) | |
1393 | *nsym = 0; | |
1394 | if (ndebug != NULL) | |
1395 | *ndebug = 0; | |
1396 | ||
1397 | buf = (char *) alloca (strlen (method) + 1); | |
1398 | strcpy (buf, method); | |
1399 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1400 | ||
1401 | if (tmp == NULL) { | |
1402 | ||
1403 | struct symtab *sym_symtab = NULL; | |
1404 | struct symbol *sym = NULL; | |
1405 | struct minimal_symbol *msym = NULL; | |
1406 | ||
1407 | strcpy (buf, method); | |
1408 | tmp = parse_selector (buf, &selector); | |
1409 | ||
1410 | if (tmp == NULL) | |
1411 | return NULL; | |
1412 | ||
1413 | sym = lookup_symbol (selector, block, VAR_NAMESPACE, 0, &sym_symtab); | |
1414 | if (sym != NULL) | |
1415 | { | |
1416 | if (syms) | |
1417 | syms[csym] = sym; | |
1418 | csym++; | |
1419 | cdebug++; | |
1420 | } | |
1421 | ||
1422 | if (sym == NULL) | |
1423 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1424 | ||
1425 | if (msym != NULL) | |
1426 | { | |
1427 | if (syms) | |
1428 | syms[csym] = msym; | |
1429 | csym++; | |
1430 | } | |
1431 | } | |
1432 | ||
1433 | if (syms != NULL) | |
1434 | find_methods (symtab, type, class, category, selector, syms + csym, &ncsym, &ncdebug); | |
1435 | else | |
1436 | find_methods (symtab, type, class, category, selector, NULL, &ncsym, &ncdebug); | |
1437 | ||
1438 | /* If we didn't find any methods, just return. */ | |
1439 | if (ncsym == 0 && ncdebug == 0) | |
1440 | return method; | |
1441 | ||
1442 | /* Take debug symbols from the second batch of symbols and swap them | |
1443 | * with debug symbols from the first batch. Repeat until either the | |
1444 | * second section is out of debug symbols or the first section is | |
1445 | * full of debug symbols. Either way we have all debug symbols | |
1446 | * packed to the beginning of the buffer. */ | |
1447 | ||
1448 | if (syms != NULL) | |
1449 | { | |
1450 | while ((cdebug < csym) && (ncdebug > 0)) | |
1451 | { | |
1452 | struct symbol *s = NULL; | |
1453 | ||
1454 | unsigned int i = cdebug; /* first non-debugging symbol */ | |
1455 | unsigned int j = csym + ncdebug -1; /* last of second batch of debug symbols */ | |
1456 | ||
1457 | s = syms[j]; | |
1458 | syms[j] = syms[i]; | |
1459 | syms[i] = s; | |
1460 | ||
1461 | /* We've moved a symbol from the second debug section to the first one. */ | |
1462 | cdebug++; | |
1463 | ncdebug--; | |
1464 | } | |
1465 | } | |
1466 | ||
1467 | csym += ncsym; | |
1468 | cdebug += ncdebug; | |
1469 | ||
1470 | if (nsym != NULL) | |
1471 | *nsym = csym; | |
1472 | if (ndebug != NULL) | |
1473 | *ndebug = cdebug; | |
1474 | ||
1475 | if (syms == NULL) | |
1476 | return method + (tmp - buf); | |
1477 | ||
1478 | if (csym > 1) | |
1479 | { | |
1480 | /* sort debuggable symbols */ | |
1481 | if (cdebug > 1) | |
1482 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), compare_classes); | |
1483 | ||
1484 | /* sort minimal_symbols */ | |
1485 | if ((csym - cdebug) > 1) | |
1486 | qsort (&syms[cdebug], csym - cdebug, sizeof (struct minimal_symbol *), compare_classes); | |
1487 | } | |
1488 | syms[csym] = 0; /* terminate the sym_arr list */ | |
1489 | ||
1490 | return method + (tmp - buf); | |
1491 | } | |
1492 | ||
1493 | void | |
1494 | print_object_command (char *args, int from_tty) | |
1495 | { | |
1496 | struct value *object, *function, *description; | |
1497 | CORE_ADDR string_addr; | |
1498 | int i = 0; | |
1499 | char c = -1; | |
1500 | ||
1501 | if (!args || !*args) | |
1502 | error ("The 'print-object' command requires an argument (an Objective-C object)"); | |
1503 | ||
1504 | { | |
1505 | struct expression *expr = parse_expression (args); | |
1506 | register struct cleanup *old_chain = make_cleanup (free_current_contents, &expr); | |
1507 | int pc = 0; | |
1508 | ||
1509 | #if 1 | |
1510 | object = expr->language_defn->evaluate_exp (builtin_type_void_data_ptr, | |
1511 | expr, &pc, EVAL_NORMAL); | |
1512 | #else | |
1513 | object = evaluate_subexp (builtin_type_void_data_ptr, expr, &pc, EVAL_NORMAL); | |
1514 | #endif | |
1515 | do_cleanups (old_chain); | |
1516 | } | |
1517 | ||
1518 | if (!(function = find_function_in_inferior ("_NSPrintForDebugger"))) | |
1519 | error ("Unable to locate _NSPrintForDebugger in child process"); | |
1520 | ||
1521 | description = call_function_by_hand (function, 1, &object); | |
1522 | ||
1523 | if ((string_addr = value_as_long (description)) == 0) | |
1524 | error ("object returns null description"); | |
1525 | ||
1526 | read_memory (string_addr + i++, &c, 1); | |
1527 | if (c != '\0') | |
1528 | do | |
1529 | { /* read and print characters up to EOS */ | |
1530 | QUIT; | |
1531 | printf_filtered ("%c", c); | |
1532 | read_memory (string_addr + i++, &c, 1); | |
1533 | } while (c != 0); | |
1534 | else | |
1535 | printf_filtered("<object returns empty description>"); | |
1536 | printf_filtered ("\n"); | |
1537 | } | |
1538 | ||
1539 | /* The data structure 'methcalls' is used to detect method calls | |
1540 | * (thru ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1541 | * and ultimately find the method being called. | |
1542 | */ | |
1543 | ||
1544 | struct objc_methcall { | |
1545 | char *name; | |
1546 | CORE_ADDR (*stop_at) (CORE_ADDR); /* should return instance method to be called */ | |
1547 | CORE_ADDR begin; /* start of pc range corresponding to method invocation */ | |
1548 | CORE_ADDR end; /* end of pc range corresponding to method invocation */ | |
1549 | }; | |
1550 | ||
1551 | static int resolve_msgsend PARAMS ((CORE_ADDR pc, CORE_ADDR *new_pc)); | |
1552 | static int resolve_msgsend_stret PARAMS ((CORE_ADDR pc, CORE_ADDR *new_pc)); | |
1553 | static int resolve_msgsend_super PARAMS ((CORE_ADDR pc, CORE_ADDR *new_pc)); | |
1554 | static int resolve_msgsend_super_stret PARAMS ((CORE_ADDR pc, CORE_ADDR *new_pc)); | |
1555 | ||
1556 | static struct objc_methcall methcalls[] = { | |
1557 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1558 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1559 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1560 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1561 | { "_objc_getClass", NULL, 0, 0}, | |
1562 | { "_objc_getMetaClass", NULL, 0, 0} | |
1563 | }; | |
1564 | ||
1565 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1566 | ||
1567 | /* The following function, "find_objc_msgsend", fills in the data structure | |
1568 | * "objc_msgs" by finding the addresses of each of the (currently four) | |
1569 | * functions that it holds (of which objc_msgSend is the first). This | |
1570 | * must be called each time symbols are loaded, in case the functions | |
1571 | * have moved for some reason. | |
1572 | */ | |
1573 | ||
1574 | void | |
1575 | find_objc_msgsend (void) | |
1576 | { | |
1577 | unsigned int i; | |
1578 | for (i = 0; i < nmethcalls; i++) { | |
1579 | ||
1580 | struct minimal_symbol *func; | |
1581 | ||
1582 | /* try both with and without underscore */ | |
1583 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); | |
1584 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1585 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1586 | } | |
1587 | if (func == NULL) { | |
1588 | methcalls[i].begin = 0; | |
1589 | methcalls[i].end = 0; | |
1590 | continue; | |
1591 | } | |
1592 | ||
1593 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1594 | do { | |
1595 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1596 | } while (methcalls[i].begin == methcalls[i].end); | |
1597 | } | |
1598 | } | |
1599 | ||
1600 | /* find_objc_msgcall (replaces pc_off_limits) | |
1601 | * | |
1602 | * ALL that this function now does is to determine whether the input | |
1603 | * address ("pc") is the address of one of the Objective C message | |
1604 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and | |
1605 | * if so, it returns the address of the method that will be called. | |
1606 | * | |
1607 | * The old function "pc_off_limits" used to do a lot of other things | |
1608 | * in addition, such as detecting shared library jump stubs and | |
1609 | * returning the address of the shlib function that would be called. | |
1610 | * That functionality has been moved into the SKIP_TRAMPOLINE_CODE | |
1611 | * and IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- | |
1612 | * dependent modules. | |
1613 | */ | |
1614 | ||
1615 | struct objc_submethod_helper_data { | |
1616 | CORE_ADDR (*f) (CORE_ADDR, CORE_ADDR *); | |
1617 | CORE_ADDR pc; | |
1618 | CORE_ADDR *new_pc; | |
1619 | }; | |
1620 | ||
1621 | int | |
1622 | find_objc_msgcall_submethod_helper (PTR arg) | |
1623 | { | |
1624 | struct objc_submethod_helper_data *s = (struct objc_submethod_helper_data *) arg; | |
1625 | if (s->f (s->pc, s->new_pc) == 0) { | |
1626 | return 1; | |
1627 | } else { | |
1628 | return 0; | |
1629 | } | |
1630 | } | |
1631 | ||
1632 | int | |
1633 | find_objc_msgcall_submethod (f, pc, new_pc) | |
1634 | CORE_ADDR (*f) (CORE_ADDR, CORE_ADDR *); | |
1635 | CORE_ADDR pc; | |
1636 | CORE_ADDR *new_pc; | |
1637 | { | |
1638 | struct objc_submethod_helper_data s; | |
1639 | ||
1640 | s.f = f; | |
1641 | s.pc = pc; | |
1642 | s.new_pc = new_pc; | |
1643 | ||
1644 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
1645 | (PTR) &s, | |
1646 | "Unable to determine target of Objective-C method call (ignoring):\n", | |
1647 | RETURN_MASK_ALL) == 0) { | |
1648 | return 1; | |
1649 | } else { | |
1650 | return 0; | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | int | |
1655 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1656 | { | |
1657 | unsigned int i; | |
1658 | ||
1659 | find_objc_msgsend (); | |
1660 | if (new_pc != NULL) { *new_pc = 0; } | |
1661 | ||
1662 | for (i = 0; i < nmethcalls; i++) { | |
1663 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) { | |
1664 | if (methcalls[i].stop_at != NULL) { | |
1665 | return find_objc_msgcall_submethod (methcalls[i].stop_at, pc, new_pc); | |
1666 | } else { | |
1667 | return 0; | |
1668 | } | |
1669 | } | |
1670 | } | |
1671 | return 0; | |
1672 | } | |
1673 | ||
1674 | void | |
1675 | _initialize_objc_language (void) | |
1676 | { | |
1677 | add_language (&objc_language_defn); | |
1678 | add_info ("selectors", selectors_info, /* INFO SELECTORS command */ | |
1679 | "All Objective C selectors, or those matching REGEXP."); | |
1680 | add_info ("classes", classes_info, /* INFO CLASSES command */ | |
1681 | "All Objective C classes, or those matching REGEXP."); | |
1682 | add_com ("print-object", class_vars, print_object_command, | |
1683 | "Ask an Objective-C object to print itself.\n"); | |
1684 | add_com_alias ("po", "print-object", class_vars, 1); | |
1685 | } | |
1686 | ||
1687 | #if defined (__powerpc__) || defined (__ppc__) | |
1688 | static unsigned long FETCH_ARGUMENT (int i) | |
1689 | { | |
1690 | return read_register (3 + i); | |
1691 | } | |
1692 | #elif defined (__i386__) | |
1693 | static unsigned long FETCH_ARGUMENT (int i) | |
1694 | { | |
1695 | CORE_ADDR stack = read_register (SP_REGNUM); | |
1696 | return read_memory_unsigned_integer (stack + (4 * (i + 1)), 4); | |
1697 | } | |
1698 | #elif defined (__sparc__) | |
1699 | static unsigned long FETCH_ARGUMENT (int i) | |
1700 | { | |
1701 | return read_register (O0_REGNUM + i); | |
1702 | } | |
1703 | #elif defined (__hppa__) || defined (__hppa) | |
1704 | static unsigned long FETCH_ARGUMENT (int i) | |
1705 | { | |
1706 | return read_register (R0_REGNUM + 26 - i); | |
1707 | } | |
1708 | #else | |
1709 | #error unknown architecture | |
1710 | #endif | |
1711 | ||
1712 | #if defined (__hppa__) || defined (__hppa) | |
1713 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1714 | { | |
1715 | if (pc & 0x2) { | |
1716 | pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, 4); | |
1717 | } | |
1718 | return pc; | |
1719 | } | |
1720 | #else | |
1721 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1722 | { | |
1723 | return pc; | |
1724 | } | |
1725 | #endif | |
1726 | ||
1727 | static void | |
1728 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1729 | { | |
1730 | method->name = read_memory_unsigned_integer (addr, 4); | |
1731 | method->types = read_memory_unsigned_integer (addr + 4, 4); | |
1732 | method->imp = read_memory_unsigned_integer (addr + 8, 4); | |
1733 | } | |
1734 | ||
1735 | static | |
1736 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1737 | { | |
1738 | return read_memory_unsigned_integer (addr + 4, 4); | |
1739 | } | |
1740 | ||
1741 | static void | |
1742 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1743 | struct objc_method *method) | |
1744 | { | |
1745 | CHECK_FATAL (num < read_objc_methlist_nmethods (addr)); | |
1746 | read_objc_method (addr + 8 + (12 * num), method); | |
1747 | } | |
1748 | ||
1749 | static void | |
1750 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1751 | { | |
1752 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1753 | } | |
1754 | ||
1755 | static void | |
1756 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1757 | { | |
1758 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1759 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1760 | }; | |
1761 | ||
1762 | static void | |
1763 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1764 | { | |
1765 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1766 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1767 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1768 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1769 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1770 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1771 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1772 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1773 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1774 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1775 | } | |
1776 | ||
1777 | CORE_ADDR | |
1778 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) | |
1779 | { | |
1780 | CORE_ADDR subclass = class; | |
1781 | ||
1782 | while (subclass != 0) { | |
1783 | ||
1784 | struct objc_class class_str; | |
1785 | unsigned mlistnum = 0; | |
1786 | ||
1787 | read_objc_class (subclass, &class_str); | |
1788 | ||
1789 | for (;;) { | |
1790 | CORE_ADDR mlist; | |
1791 | unsigned long nmethods; | |
1792 | unsigned long i; | |
1793 | ||
1794 | mlist = read_memory_unsigned_integer (class_str.methods + (4 * mlistnum), 4); | |
1795 | if (mlist == 0) { break; } | |
1796 | ||
1797 | nmethods = read_objc_methlist_nmethods (mlist); | |
1798 | ||
1799 | for (i = 0; i < nmethods; i++) { | |
1800 | struct objc_method meth_str; | |
1801 | read_objc_methlist_method (mlist, i, &meth_str); | |
1802 | ||
1803 | #if 0 | |
1804 | fprintf (stderr, "checking method 0x%lx against selector 0x%lx\n", meth_str.name, sel); | |
1805 | #endif | |
1806 | ||
1807 | if (meth_str.name == sel) { | |
1808 | return CONVERT_FUNCPTR (meth_str.imp); | |
1809 | } | |
1810 | } | |
1811 | ||
1812 | mlistnum++; | |
1813 | } | |
1814 | ||
1815 | subclass = class_str.super_class; | |
1816 | } | |
1817 | ||
1818 | return 0; | |
1819 | } | |
1820 | ||
1821 | CORE_ADDR | |
1822 | find_implementation (CORE_ADDR object, CORE_ADDR sel) | |
1823 | { | |
1824 | struct objc_object ostr; | |
1825 | ||
1826 | if (object == 0) { return 0; } | |
1827 | read_objc_object (object, &ostr); | |
1828 | if (ostr.isa == 0) { return 0; } | |
1829 | ||
1830 | return find_implementation_from_class (ostr.isa, sel); | |
1831 | } | |
1832 | ||
1833 | static int | |
1834 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1835 | { | |
1836 | CORE_ADDR object; | |
1837 | CORE_ADDR sel; | |
1838 | CORE_ADDR res; | |
1839 | ||
1840 | object = FETCH_ARGUMENT (0); | |
1841 | sel = FETCH_ARGUMENT (1); | |
1842 | ||
1843 | res = find_implementation (object, sel); | |
1844 | if (new_pc != 0) { *new_pc = res; } | |
1845 | if (res == 0) { return 1; } | |
1846 | return 0; | |
1847 | } | |
1848 | ||
1849 | static int | |
1850 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1851 | { | |
1852 | CORE_ADDR object; | |
1853 | CORE_ADDR sel; | |
1854 | CORE_ADDR res; | |
1855 | ||
1856 | object = FETCH_ARGUMENT (1); | |
1857 | sel = FETCH_ARGUMENT (2); | |
1858 | ||
1859 | res = find_implementation (object, sel); | |
1860 | if (new_pc != 0) { *new_pc = res; } | |
1861 | if (res == 0) { return 1; } | |
1862 | return 0; | |
1863 | } | |
1864 | ||
1865 | static int | |
1866 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1867 | { | |
1868 | struct objc_super sstr; | |
1869 | ||
1870 | CORE_ADDR super; | |
1871 | CORE_ADDR sel; | |
1872 | CORE_ADDR res; | |
1873 | ||
1874 | super = FETCH_ARGUMENT (0); | |
1875 | sel = FETCH_ARGUMENT (1); | |
1876 | ||
1877 | read_objc_super (super, &sstr); | |
1878 | if (sstr.class == 0) { return 0; } | |
1879 | ||
1880 | res = find_implementation_from_class (sstr.class, sel); | |
1881 | if (new_pc != 0) { *new_pc = res; } | |
1882 | if (res == 0) { return 1; } | |
1883 | return 0; | |
1884 | } | |
1885 | ||
1886 | static int | |
1887 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1888 | { | |
1889 | struct objc_super sstr; | |
1890 | ||
1891 | CORE_ADDR super; | |
1892 | CORE_ADDR sel; | |
1893 | CORE_ADDR res; | |
1894 | ||
1895 | super = FETCH_ARGUMENT (1); | |
1896 | sel = FETCH_ARGUMENT (2); | |
1897 | ||
1898 | read_objc_super (super, &sstr); | |
1899 | if (sstr.class == 0) { return 0; } | |
1900 | ||
1901 | res = find_implementation_from_class (sstr.class, sel); | |
1902 | if (new_pc != 0) { *new_pc = res; } | |
1903 | if (res == 0) { return 1; } | |
1904 | return 0; | |
1905 | } |