Commit | Line | Data |
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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
b368761e | 3 | Copyright 2002, 2003, 2004 Free Software Foundation, Inc. |
b81654f1 | 4 | |
437666f8 AC |
5 | Contributed by Apple Computer, Inc. |
6 | Written by Michael Snyder. | |
b81654f1 | 7 | |
437666f8 | 8 | This file is part of GDB. |
b81654f1 | 9 | |
437666f8 AC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
b81654f1 MS |
24 | |
25 | #include "defs.h" | |
26 | #include "symtab.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "parser-defs.h" | |
30 | #include "language.h" | |
d2e6263c | 31 | #include "c-lang.h" |
b81654f1 MS |
32 | #include "objc-lang.h" |
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 | ||
d2e6263c MS |
79 | /* Lookup a structure type named "struct NAME", visible in lexical |
80 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
81 | suitably defined. */ | |
b81654f1 MS |
82 | |
83 | struct symbol * | |
84 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
85 | { | |
f86f5ca3 | 86 | struct symbol *sym; |
b81654f1 | 87 | |
176620f1 | 88 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0, |
d2e6263c | 89 | (struct symtab **) NULL); |
b81654f1 MS |
90 | |
91 | if (sym == NULL) | |
92 | { | |
93 | if (noerr) | |
94 | return 0; | |
95 | else | |
96 | error ("No struct type named %s.", name); | |
97 | } | |
98 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
99 | { | |
100 | if (noerr) | |
101 | return 0; | |
102 | else | |
d2e6263c MS |
103 | error ("This context has class, union or enum %s, not a struct.", |
104 | name); | |
b81654f1 MS |
105 | } |
106 | return sym; | |
107 | } | |
108 | ||
109 | CORE_ADDR | |
110 | lookup_objc_class (char *classname) | |
111 | { | |
112 | struct value * function, *classval; | |
113 | ||
114 | if (! target_has_execution) | |
115 | { | |
d2e6263c | 116 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
117 | return 0; |
118 | } | |
119 | ||
120 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
121 | function = find_function_in_inferior("objc_lookUpClass"); | |
122 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) | |
123 | function = find_function_in_inferior("objc_lookup_class"); | |
124 | else | |
125 | { | |
9d1127c5 | 126 | complaint (&symfile_complaints, "no way to lookup Objective-C classes"); |
b81654f1 MS |
127 | return 0; |
128 | } | |
129 | ||
130 | classval = value_string (classname, strlen (classname) + 1); | |
131 | classval = value_coerce_array (classval); | |
132 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
133 | 1, &classval)); | |
134 | } | |
135 | ||
c253954e | 136 | CORE_ADDR |
b81654f1 MS |
137 | lookup_child_selector (char *selname) |
138 | { | |
139 | struct value * function, *selstring; | |
140 | ||
141 | if (! target_has_execution) | |
142 | { | |
d2e6263c | 143 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
144 | return 0; |
145 | } | |
146 | ||
147 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
148 | function = find_function_in_inferior("sel_getUid"); | |
149 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) | |
150 | function = find_function_in_inferior("sel_get_any_uid"); | |
151 | else | |
152 | { | |
9d1127c5 | 153 | complaint (&symfile_complaints, "no way to lookup Objective-C selectors"); |
b81654f1 MS |
154 | return 0; |
155 | } | |
156 | ||
d2e6263c MS |
157 | selstring = value_coerce_array (value_string (selname, |
158 | strlen (selname) + 1)); | |
b81654f1 MS |
159 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
160 | } | |
161 | ||
162 | struct value * | |
163 | value_nsstring (char *ptr, int len) | |
164 | { | |
165 | struct value *stringValue[3]; | |
166 | struct value *function, *nsstringValue; | |
167 | struct symbol *sym; | |
168 | struct type *type; | |
169 | ||
170 | if (!target_has_execution) | |
d2e6263c | 171 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 | 172 | |
5e488a7b AC |
173 | sym = lookup_struct_typedef("NSString", 0, 1); |
174 | if (sym == NULL) | |
175 | sym = lookup_struct_typedef("NXString", 0, 1); | |
176 | if (sym == NULL) | |
b81654f1 MS |
177 | type = lookup_pointer_type(builtin_type_void); |
178 | else | |
179 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
180 | ||
181 | stringValue[2] = value_string(ptr, len); | |
182 | stringValue[2] = value_coerce_array(stringValue[2]); | |
d2e6263c | 183 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
184 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
185 | { | |
186 | function = find_function_in_inferior("_NSNewStringFromCString"); | |
187 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
188 | } | |
189 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
190 | { | |
191 | function = find_function_in_inferior("istr"); | |
192 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
193 | } | |
194 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
195 | { | |
196 | function = find_function_in_inferior("+[NSString stringWithCString:]"); | |
197 | stringValue[0] = value_from_longest | |
198 | (builtin_type_long, lookup_objc_class ("NSString")); | |
199 | stringValue[1] = value_from_longest | |
200 | (builtin_type_long, lookup_child_selector ("stringWithCString:")); | |
201 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); | |
202 | } | |
203 | else | |
204 | error ("NSString: internal error -- no way to create new NSString"); | |
205 | ||
206 | VALUE_TYPE(nsstringValue) = type; | |
207 | return nsstringValue; | |
208 | } | |
209 | ||
d2e6263c | 210 | /* Objective-C name demangling. */ |
b81654f1 MS |
211 | |
212 | char * | |
9a3d7dfd | 213 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
214 | { |
215 | char *demangled, *cp; | |
216 | ||
217 | if (mangled[0] == '_' && | |
218 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
219 | mangled[2] == '_') | |
220 | { | |
221 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
222 | ||
223 | if (mangled[1] == 'i') | |
224 | *cp++ = '-'; /* for instance method */ | |
225 | else | |
226 | *cp++ = '+'; /* for class method */ | |
227 | ||
228 | *cp++ = '['; /* opening left brace */ | |
229 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
230 | ||
231 | while (*cp && *cp == '_') | |
232 | cp++; /* skip any initial underbars in class name */ | |
233 | ||
7248f48e AF |
234 | cp = strchr(cp, '_'); |
235 | if (!cp) /* find first non-initial underbar */ | |
b81654f1 | 236 | { |
7248f48e | 237 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
238 | return NULL; |
239 | } | |
240 | if (cp[1] == '_') { /* easy case: no category name */ | |
241 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
242 | strcpy(cp, mangled + (cp - demangled) + 2); | |
243 | } | |
244 | else { | |
245 | *cp++ = '('; /* less easy case: category name */ | |
7248f48e AF |
246 | cp = strchr(cp, '_'); |
247 | if (!cp) | |
b81654f1 | 248 | { |
7248f48e | 249 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
250 | return NULL; |
251 | } | |
252 | *cp++ = ')'; | |
d2e6263c | 253 | *cp++ = ' '; /* overwriting 1st char of method name... */ |
b81654f1 MS |
254 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
255 | } | |
256 | ||
257 | while (*cp && *cp == '_') | |
258 | cp++; /* skip any initial underbars in method name */ | |
259 | ||
260 | for (; *cp; cp++) | |
261 | if (*cp == '_') | |
262 | *cp = ':'; /* replace remaining '_' with ':' */ | |
263 | ||
264 | *cp++ = ']'; /* closing right brace */ | |
265 | *cp++ = 0; /* string terminator */ | |
266 | return demangled; | |
267 | } | |
268 | else | |
d2e6263c | 269 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
270 | } |
271 | ||
d2e6263c MS |
272 | /* Print the character C on STREAM as part of the contents of a |
273 | literal string whose delimiter is QUOTER. Note that that format | |
274 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
275 | |
276 | static void | |
f86f5ca3 | 277 | objc_emit_char (int c, struct ui_file *stream, int quoter) |
b81654f1 MS |
278 | { |
279 | ||
d2e6263c | 280 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
281 | |
282 | if (PRINT_LITERAL_FORM (c)) | |
283 | { | |
284 | if (c == '\\' || c == quoter) | |
285 | { | |
286 | fputs_filtered ("\\", stream); | |
287 | } | |
288 | fprintf_filtered (stream, "%c", c); | |
289 | } | |
290 | else | |
291 | { | |
292 | switch (c) | |
293 | { | |
294 | case '\n': | |
295 | fputs_filtered ("\\n", stream); | |
296 | break; | |
297 | case '\b': | |
298 | fputs_filtered ("\\b", stream); | |
299 | break; | |
300 | case '\t': | |
301 | fputs_filtered ("\\t", stream); | |
302 | break; | |
303 | case '\f': | |
304 | fputs_filtered ("\\f", stream); | |
305 | break; | |
306 | case '\r': | |
307 | fputs_filtered ("\\r", stream); | |
308 | break; | |
309 | case '\033': | |
310 | fputs_filtered ("\\e", stream); | |
311 | break; | |
312 | case '\007': | |
313 | fputs_filtered ("\\a", stream); | |
314 | break; | |
315 | default: | |
316 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
317 | break; | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
322 | static void | |
323 | objc_printchar (int c, struct ui_file *stream) | |
324 | { | |
325 | fputs_filtered ("'", stream); | |
326 | objc_emit_char (c, stream, '\''); | |
327 | fputs_filtered ("'", stream); | |
328 | } | |
329 | ||
d2e6263c MS |
330 | /* Print the character string STRING, printing at most LENGTH |
331 | characters. Printing stops early if the number hits print_max; | |
332 | repeat counts are printed as appropriate. Print ellipses at the | |
333 | end if we had to stop before printing LENGTH characters, or if | |
334 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
335 | |
336 | static void | |
d2e6263c | 337 | objc_printstr (struct ui_file *stream, char *string, |
36e53c63 | 338 | unsigned int length, int width, int force_ellipses) |
b81654f1 | 339 | { |
f86f5ca3 | 340 | unsigned int i; |
b81654f1 MS |
341 | unsigned int things_printed = 0; |
342 | int in_quotes = 0; | |
343 | int need_comma = 0; | |
b81654f1 MS |
344 | |
345 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
346 | the last byte of it is a null, we don't print that, in |
347 | traditional C style. */ | |
b81654f1 MS |
348 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
349 | length--; | |
350 | ||
351 | if (length == 0) | |
352 | { | |
353 | fputs_filtered ("\"\"", stream); | |
354 | return; | |
355 | } | |
356 | ||
357 | for (i = 0; i < length && things_printed < print_max; ++i) | |
358 | { | |
d2e6263c MS |
359 | /* Position of the character we are examining to see whether it |
360 | is repeated. */ | |
b81654f1 MS |
361 | unsigned int rep1; |
362 | /* Number of repetitions we have detected so far. */ | |
363 | unsigned int reps; | |
364 | ||
365 | QUIT; | |
366 | ||
367 | if (need_comma) | |
368 | { | |
369 | fputs_filtered (", ", stream); | |
370 | need_comma = 0; | |
371 | } | |
372 | ||
373 | rep1 = i + 1; | |
374 | reps = 1; | |
375 | while (rep1 < length && string[rep1] == string[i]) | |
376 | { | |
377 | ++rep1; | |
378 | ++reps; | |
379 | } | |
380 | ||
381 | if (reps > repeat_count_threshold) | |
382 | { | |
383 | if (in_quotes) | |
384 | { | |
385 | if (inspect_it) | |
386 | fputs_filtered ("\\\", ", stream); | |
387 | else | |
388 | fputs_filtered ("\", ", stream); | |
389 | in_quotes = 0; | |
390 | } | |
391 | objc_printchar (string[i], stream); | |
392 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
393 | i = rep1 - 1; | |
394 | things_printed += repeat_count_threshold; | |
395 | need_comma = 1; | |
396 | } | |
397 | else | |
398 | { | |
399 | if (!in_quotes) | |
400 | { | |
401 | if (inspect_it) | |
402 | fputs_filtered ("\\\"", stream); | |
403 | else | |
404 | fputs_filtered ("\"", stream); | |
405 | in_quotes = 1; | |
406 | } | |
407 | objc_emit_char (string[i], stream, '"'); | |
408 | ++things_printed; | |
409 | } | |
410 | } | |
411 | ||
412 | /* Terminate the quotes if necessary. */ | |
413 | if (in_quotes) | |
414 | { | |
415 | if (inspect_it) | |
416 | fputs_filtered ("\\\"", stream); | |
417 | else | |
418 | fputs_filtered ("\"", stream); | |
419 | } | |
420 | ||
421 | if (force_ellipses || i < length) | |
422 | fputs_filtered ("...", stream); | |
423 | } | |
424 | ||
d2e6263c MS |
425 | /* Create a fundamental C type using default reasonable for the |
426 | current target. | |
427 | ||
428 | Some object/debugging file formats (DWARF version 1, COFF, etc) do | |
429 | not define fundamental types such as "int" or "double". Others | |
430 | (stabs or DWARF version 2, etc) do define fundamental types. For | |
431 | the formats which don't provide fundamental types, gdb can create | |
432 | such types using this function. | |
433 | ||
434 | FIXME: Some compilers distinguish explicitly signed integral types | |
435 | (signed short, signed int, signed long) from "regular" integral | |
436 | types (short, int, long) in the debugging information. There is | |
437 | some disagreement as to how useful this feature is. In particular, | |
438 | gcc does not support this. Also, only some debugging formats allow | |
439 | the distinction to be passed on to a debugger. For now, we always | |
440 | just use "short", "int", or "long" as the type name, for both the | |
441 | implicit and explicitly signed types. This also makes life easier | |
442 | for the gdb test suite since we don't have to account for the | |
443 | differences in output depending upon what the compiler and | |
444 | debugging format support. We will probably have to re-examine the | |
445 | issue when gdb starts taking it's fundamental type information | |
446 | directly from the debugging information supplied by the compiler. | |
447 | fnf@cygnus.com */ | |
b81654f1 MS |
448 | |
449 | static struct type * | |
450 | objc_create_fundamental_type (struct objfile *objfile, int typeid) | |
451 | { | |
f86f5ca3 | 452 | struct type *type = NULL; |
b81654f1 MS |
453 | |
454 | switch (typeid) | |
455 | { | |
456 | default: | |
d2e6263c MS |
457 | /* FIXME: For now, if we are asked to produce a type not in |
458 | this language, create the equivalent of a C integer type | |
459 | with the name "<?type?>". When all the dust settles from | |
460 | the type reconstruction work, this should probably become | |
461 | an error. */ | |
b81654f1 MS |
462 | type = init_type (TYPE_CODE_INT, |
463 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
464 | 0, "<?type?>", objfile); | |
465 | warning ("internal error: no C/C++ fundamental type %d", typeid); | |
466 | break; | |
467 | case FT_VOID: | |
468 | type = init_type (TYPE_CODE_VOID, | |
469 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
470 | 0, "void", objfile); | |
471 | break; | |
472 | case FT_CHAR: | |
473 | type = init_type (TYPE_CODE_INT, | |
474 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
475 | 0, "char", objfile); | |
476 | break; | |
477 | case FT_SIGNED_CHAR: | |
478 | type = init_type (TYPE_CODE_INT, | |
479 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
480 | 0, "signed char", objfile); | |
481 | break; | |
482 | case FT_UNSIGNED_CHAR: | |
483 | type = init_type (TYPE_CODE_INT, | |
484 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
485 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); | |
486 | break; | |
487 | case FT_SHORT: | |
488 | type = init_type (TYPE_CODE_INT, | |
489 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
490 | 0, "short", objfile); | |
491 | break; | |
492 | case FT_SIGNED_SHORT: | |
493 | type = init_type (TYPE_CODE_INT, | |
494 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
495 | 0, "short", objfile); /* FIXME-fnf */ | |
496 | break; | |
497 | case FT_UNSIGNED_SHORT: | |
498 | type = init_type (TYPE_CODE_INT, | |
499 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
500 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); | |
501 | break; | |
502 | case FT_INTEGER: | |
503 | type = init_type (TYPE_CODE_INT, | |
504 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
505 | 0, "int", objfile); | |
506 | break; | |
507 | case FT_SIGNED_INTEGER: | |
508 | type = init_type (TYPE_CODE_INT, | |
509 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
510 | 0, "int", objfile); /* FIXME -fnf */ | |
511 | break; | |
512 | case FT_UNSIGNED_INTEGER: | |
513 | type = init_type (TYPE_CODE_INT, | |
514 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
515 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); | |
516 | break; | |
517 | case FT_LONG: | |
518 | type = init_type (TYPE_CODE_INT, | |
519 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
520 | 0, "long", objfile); | |
521 | break; | |
522 | case FT_SIGNED_LONG: | |
523 | type = init_type (TYPE_CODE_INT, | |
524 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
525 | 0, "long", objfile); /* FIXME -fnf */ | |
526 | break; | |
527 | case FT_UNSIGNED_LONG: | |
528 | type = init_type (TYPE_CODE_INT, | |
529 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
530 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); | |
531 | break; | |
532 | case FT_LONG_LONG: | |
533 | type = init_type (TYPE_CODE_INT, | |
534 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
535 | 0, "long long", objfile); | |
536 | break; | |
537 | case FT_SIGNED_LONG_LONG: | |
538 | type = init_type (TYPE_CODE_INT, | |
539 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
540 | 0, "signed long long", objfile); | |
541 | break; | |
542 | case FT_UNSIGNED_LONG_LONG: | |
543 | type = init_type (TYPE_CODE_INT, | |
544 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
545 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
546 | break; | |
547 | case FT_FLOAT: | |
548 | type = init_type (TYPE_CODE_FLT, | |
549 | TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
550 | 0, "float", objfile); | |
551 | break; | |
552 | case FT_DBL_PREC_FLOAT: | |
553 | type = init_type (TYPE_CODE_FLT, | |
554 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
555 | 0, "double", objfile); | |
556 | break; | |
557 | case FT_EXT_PREC_FLOAT: | |
558 | type = init_type (TYPE_CODE_FLT, | |
559 | TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, | |
560 | 0, "long double", objfile); | |
561 | break; | |
562 | } | |
563 | return (type); | |
564 | } | |
565 | ||
f636b87d AF |
566 | /* Determine if we are currently in the Objective-C dispatch function. |
567 | If so, get the address of the method function that the dispatcher | |
568 | would call and use that as the function to step into instead. Also | |
569 | skip over the trampoline for the function (if any). This is better | |
570 | for the user since they are only interested in stepping into the | |
571 | method function anyway. */ | |
572 | static CORE_ADDR | |
573 | objc_skip_trampoline (CORE_ADDR stop_pc) | |
574 | { | |
575 | CORE_ADDR real_stop_pc; | |
576 | CORE_ADDR method_stop_pc; | |
577 | ||
578 | real_stop_pc = SKIP_TRAMPOLINE_CODE (stop_pc); | |
579 | ||
580 | if (real_stop_pc != 0) | |
581 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
582 | else | |
583 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
584 | ||
585 | if (method_stop_pc) | |
586 | { | |
587 | real_stop_pc = SKIP_TRAMPOLINE_CODE (method_stop_pc); | |
588 | if (real_stop_pc == 0) | |
589 | real_stop_pc = method_stop_pc; | |
590 | } | |
591 | ||
592 | return real_stop_pc; | |
593 | } | |
594 | ||
b81654f1 MS |
595 | |
596 | /* Table mapping opcodes into strings for printing operators | |
597 | and precedences of the operators. */ | |
598 | ||
599 | static const struct op_print objc_op_print_tab[] = | |
600 | { | |
601 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
602 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
603 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
604 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
605 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
606 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
607 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
608 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
609 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
610 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
611 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
612 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
613 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
614 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
615 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
616 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
617 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
618 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
619 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
620 | {"%", BINOP_REM, PREC_MUL, 0}, | |
621 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
622 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
623 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
624 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
625 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
626 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
627 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
628 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
629 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 630 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
631 | }; |
632 | ||
633 | struct type ** const (objc_builtin_types[]) = | |
634 | { | |
635 | &builtin_type_int, | |
636 | &builtin_type_long, | |
637 | &builtin_type_short, | |
638 | &builtin_type_char, | |
639 | &builtin_type_float, | |
640 | &builtin_type_double, | |
641 | &builtin_type_void, | |
642 | &builtin_type_long_long, | |
643 | &builtin_type_signed_char, | |
644 | &builtin_type_unsigned_char, | |
645 | &builtin_type_unsigned_short, | |
646 | &builtin_type_unsigned_int, | |
647 | &builtin_type_unsigned_long, | |
648 | &builtin_type_unsigned_long_long, | |
649 | &builtin_type_long_double, | |
650 | &builtin_type_complex, | |
651 | &builtin_type_double_complex, | |
652 | 0 | |
653 | }; | |
654 | ||
655 | const struct language_defn objc_language_defn = { | |
d2e6263c | 656 | "objective-c", /* Language name */ |
b81654f1 MS |
657 | language_objc, |
658 | objc_builtin_types, | |
659 | range_check_off, | |
660 | type_check_off, | |
661 | case_sensitive_on, | |
5f9769d1 | 662 | &exp_descriptor_standard, |
b81654f1 MS |
663 | objc_parse, |
664 | objc_error, | |
b81654f1 MS |
665 | objc_printchar, /* Print a character constant */ |
666 | objc_printstr, /* Function to print string constant */ | |
667 | objc_emit_char, | |
668 | objc_create_fundamental_type, /* Create fundamental type in this language */ | |
669 | c_print_type, /* Print a type using appropriate syntax */ | |
670 | c_val_print, /* Print a value using appropriate syntax */ | |
671 | c_value_print, /* Print a top-level value */ | |
f636b87d | 672 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
5f9a71c3 DC |
673 | value_of_this, /* value_of_this */ |
674 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ | |
b368761e | 675 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 676 | objc_demangle, /* Language specific symbol demangler */ |
b81654f1 MS |
677 | {"", "", "", ""}, /* Binary format info */ |
678 | {"0%lo", "0", "o", ""}, /* Octal format info */ | |
679 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
680 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
d2e6263c MS |
681 | objc_op_print_tab, /* Expression operators for printing */ |
682 | 1, /* C-style arrays */ | |
b81654f1 MS |
683 | 0, /* String lower bound */ |
684 | &builtin_type_char, /* Type of string elements */ | |
6084f43a | 685 | default_word_break_characters, |
b81654f1 MS |
686 | LANG_MAGIC |
687 | }; | |
688 | ||
689 | /* | |
690 | * ObjC: | |
d2e6263c | 691 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
692 | */ |
693 | ||
d2e6263c | 694 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
695 | { |
696 | struct selname *next; | |
697 | char *msglist_sel; | |
698 | int msglist_len; | |
699 | }; | |
700 | ||
701 | static int msglist_len; | |
702 | static struct selname *selname_chain; | |
703 | static char *msglist_sel; | |
704 | ||
705 | void | |
706 | start_msglist(void) | |
707 | { | |
f86f5ca3 | 708 | struct selname *new = |
b81654f1 MS |
709 | (struct selname *) xmalloc (sizeof (struct selname)); |
710 | ||
711 | new->next = selname_chain; | |
712 | new->msglist_len = msglist_len; | |
713 | new->msglist_sel = msglist_sel; | |
714 | msglist_len = 0; | |
715 | msglist_sel = (char *)xmalloc(1); | |
716 | *msglist_sel = 0; | |
717 | selname_chain = new; | |
718 | } | |
719 | ||
720 | void | |
721 | add_msglist(struct stoken *str, int addcolon) | |
722 | { | |
723 | char *s, *p; | |
724 | int len, plen; | |
725 | ||
d2e6263c MS |
726 | if (str == 0) { /* Unnamed arg, or... */ |
727 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
728 | msglist_len++; |
729 | return; | |
730 | } | |
731 | p = ""; | |
732 | plen = 0; | |
733 | } else { | |
734 | p = str->ptr; | |
735 | plen = str->length; | |
736 | } | |
737 | len = plen + strlen(msglist_sel) + 2; | |
738 | s = (char *)xmalloc(len); | |
739 | strcpy(s, msglist_sel); | |
740 | strncat(s, p, plen); | |
7248f48e | 741 | xfree(msglist_sel); |
b81654f1 MS |
742 | msglist_sel = s; |
743 | if (addcolon) { | |
744 | s[len-2] = ':'; | |
745 | s[len-1] = 0; | |
746 | msglist_len++; | |
747 | } else | |
748 | s[len-2] = '\0'; | |
749 | } | |
750 | ||
751 | int | |
752 | end_msglist(void) | |
753 | { | |
f86f5ca3 PH |
754 | int val = msglist_len; |
755 | struct selname *sel = selname_chain; | |
756 | char *p = msglist_sel; | |
c253954e | 757 | CORE_ADDR selid; |
b81654f1 MS |
758 | |
759 | selname_chain = sel->next; | |
760 | msglist_len = sel->msglist_len; | |
761 | msglist_sel = sel->msglist_sel; | |
762 | selid = lookup_child_selector(p); | |
763 | if (!selid) | |
764 | error("Can't find selector \"%s\"", p); | |
765 | write_exp_elt_longcst (selid); | |
7248f48e | 766 | xfree(p); |
d2e6263c | 767 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 768 | xfree(sel); |
b81654f1 MS |
769 | |
770 | return val; | |
771 | } | |
772 | ||
773 | /* | |
774 | * Function: specialcmp (char *a, char *b) | |
775 | * | |
776 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 777 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
778 | */ |
779 | ||
b9362cc7 AC |
780 | static int |
781 | specialcmp (char *a, char *b) | |
b81654f1 MS |
782 | { |
783 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
784 | { | |
785 | if (*a != *b) | |
786 | return *a - *b; | |
787 | a++, b++; | |
788 | } | |
789 | if (*a && *a != ' ' && *a != ']') | |
790 | return 1; /* a is longer therefore greater */ | |
791 | if (*b && *b != ' ' && *b != ']') | |
792 | return -1; /* a is shorter therefore lesser */ | |
793 | return 0; /* a and b are identical */ | |
794 | } | |
795 | ||
796 | /* | |
36e53c63 | 797 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 798 | * |
d2e6263c MS |
799 | * Comparison function for use with qsort. Arguments are symbols or |
800 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
801 | */ |
802 | ||
803 | static int | |
36e53c63 | 804 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
805 | { |
806 | char *aname, *bname; | |
807 | ||
de5ad195 DC |
808 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
809 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 810 | if (aname == NULL || bname == NULL) |
b81654f1 MS |
811 | error ("internal: compare_selectors(1)"); |
812 | ||
7248f48e AF |
813 | aname = strchr(aname, ' '); |
814 | bname = strchr(bname, ' '); | |
815 | if (aname == NULL || bname == NULL) | |
b81654f1 MS |
816 | error ("internal: compare_selectors(2)"); |
817 | ||
818 | return specialcmp (aname+1, bname+1); | |
819 | } | |
820 | ||
821 | /* | |
822 | * Function: selectors_info (regexp, from_tty) | |
823 | * | |
d2e6263c MS |
824 | * Implements the "Info selectors" command. Takes an optional regexp |
825 | * arg. Lists all objective c selectors that match the regexp. Works | |
826 | * by grepping thru all symbols for objective c methods. Output list | |
827 | * is sorted and uniqued. | |
b81654f1 MS |
828 | */ |
829 | ||
830 | static void | |
831 | selectors_info (char *regexp, int from_tty) | |
832 | { | |
833 | struct objfile *objfile; | |
834 | struct minimal_symbol *msymbol; | |
835 | char *name; | |
836 | char *val; | |
837 | int matches = 0; | |
838 | int maxlen = 0; | |
839 | int ix; | |
840 | char myregexp[2048]; | |
841 | char asel[256]; | |
842 | struct symbol **sym_arr; | |
843 | int plusminus = 0; | |
844 | ||
845 | if (regexp == NULL) | |
d2e6263c | 846 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
847 | else |
848 | { | |
d2e6263c MS |
849 | if (*regexp == '+' || *regexp == '-') |
850 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
851 | plusminus = *regexp++; |
852 | while (*regexp == ' ' || *regexp == '\t') | |
853 | regexp++; | |
854 | } | |
855 | if (*regexp == '\0') | |
856 | strcpy(myregexp, ".*]"); | |
857 | else | |
858 | { | |
859 | strcpy(myregexp, regexp); | |
860 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
861 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
862 | else | |
863 | strcat(myregexp, ".*]"); | |
864 | } | |
865 | } | |
866 | ||
867 | if (regexp != NULL) | |
5e488a7b AC |
868 | { |
869 | val = re_comp (myregexp); | |
870 | if (val != 0) | |
871 | error ("Invalid regexp (%s): %s", val, regexp); | |
872 | } | |
b81654f1 | 873 | |
d2e6263c | 874 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
875 | ALL_MSYMBOLS (objfile, msymbol) |
876 | { | |
877 | QUIT; | |
36018d2e | 878 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
879 | if (name && |
880 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 881 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 882 | { |
d2e6263c | 883 | /* Filter for class/instance methods. */ |
b81654f1 | 884 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
885 | continue; |
886 | /* Find selector part. */ | |
887 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
888 | if (regexp == NULL || re_exec(++name) != 0) |
889 | { | |
890 | char *mystart = name; | |
891 | char *myend = (char *) strchr(mystart, ']'); | |
892 | ||
893 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 894 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
895 | matches++; |
896 | } | |
897 | } | |
898 | } | |
899 | if (matches) | |
900 | { | |
901 | printf_filtered ("Selectors matching \"%s\":\n\n", | |
902 | regexp ? regexp : "*"); | |
903 | ||
904 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
905 | matches = 0; | |
906 | ALL_MSYMBOLS (objfile, msymbol) | |
907 | { | |
908 | QUIT; | |
36018d2e | 909 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
910 | if (name && |
911 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 912 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 913 | { |
d2e6263c | 914 | /* Filter for class/instance methods. */ |
b81654f1 | 915 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
916 | continue; |
917 | /* Find selector part. */ | |
918 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
919 | if (regexp == NULL || re_exec(++name) != 0) |
920 | sym_arr[matches++] = (struct symbol *) msymbol; | |
921 | } | |
922 | } | |
923 | ||
924 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
925 | compare_selectors); | |
d2e6263c MS |
926 | /* Prevent compare on first iteration. */ |
927 | asel[0] = 0; | |
928 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
929 | { |
930 | char *p = asel; | |
931 | ||
932 | QUIT; | |
36018d2e | 933 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
934 | name = strchr (name, ' ') + 1; |
935 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 936 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 937 | |
d2e6263c MS |
938 | /* Copy selector part. */ |
939 | while (*name && *name != ']') | |
b81654f1 MS |
940 | *p++ = *name++; |
941 | *p++ = '\0'; | |
d2e6263c MS |
942 | /* Print in columns. */ |
943 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
944 | } |
945 | begin_line(); | |
946 | } | |
947 | else | |
948 | printf_filtered ("No selectors matching \"%s\"\n", regexp ? regexp : "*"); | |
949 | } | |
950 | ||
951 | /* | |
36e53c63 | 952 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 953 | * |
d2e6263c MS |
954 | * Comparison function for use with qsort. Arguments are symbols or |
955 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
956 | */ |
957 | ||
958 | static int | |
36e53c63 | 959 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
960 | { |
961 | char *aname, *bname; | |
962 | ||
de5ad195 DC |
963 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
964 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 965 | if (aname == NULL || bname == NULL) |
b81654f1 MS |
966 | error ("internal: compare_classes(1)"); |
967 | ||
968 | return specialcmp (aname+1, bname+1); | |
969 | } | |
970 | ||
971 | /* | |
972 | * Function: classes_info(regexp, from_tty) | |
973 | * | |
974 | * Implements the "info classes" command for objective c classes. | |
975 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
976 | * Works by grepping thru the list of objective c methods. List will |
977 | * be sorted and uniqued (since one class may have many methods). | |
978 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
979 | */ |
980 | ||
981 | static void | |
982 | classes_info (char *regexp, int from_tty) | |
983 | { | |
984 | struct objfile *objfile; | |
985 | struct minimal_symbol *msymbol; | |
986 | char *name; | |
987 | char *val; | |
988 | int matches = 0; | |
989 | int maxlen = 0; | |
990 | int ix; | |
991 | char myregexp[2048]; | |
992 | char aclass[256]; | |
993 | struct symbol **sym_arr; | |
994 | ||
995 | if (regexp == NULL) | |
d2e6263c | 996 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
997 | else |
998 | { | |
999 | strcpy(myregexp, regexp); | |
1000 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 1001 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
1002 | myregexp[strlen(myregexp) - 1] = ' '; |
1003 | else | |
1004 | strcat(myregexp, ".* "); | |
1005 | } | |
1006 | ||
1007 | if (regexp != NULL) | |
5e488a7b AC |
1008 | { |
1009 | val = re_comp (myregexp); | |
1010 | if (val != 0) | |
1011 | error ("Invalid regexp (%s): %s", val, regexp); | |
1012 | } | |
b81654f1 | 1013 | |
d2e6263c | 1014 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
1015 | ALL_MSYMBOLS (objfile, msymbol) |
1016 | { | |
1017 | QUIT; | |
36018d2e | 1018 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
1019 | if (name && |
1020 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1021 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1022 | if (regexp == NULL || re_exec(name+2) != 0) |
1023 | { | |
d2e6263c MS |
1024 | /* Compute length of classname part. */ |
1025 | char *mystart = name + 2; | |
b81654f1 MS |
1026 | char *myend = (char *) strchr(mystart, ' '); |
1027 | ||
1028 | if (myend && (myend - mystart > maxlen)) | |
1029 | maxlen = myend - mystart; | |
1030 | matches++; | |
1031 | } | |
1032 | } | |
1033 | if (matches) | |
1034 | { | |
1035 | printf_filtered ("Classes matching \"%s\":\n\n", | |
1036 | regexp ? regexp : "*"); | |
1037 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
1038 | matches = 0; | |
1039 | ALL_MSYMBOLS (objfile, msymbol) | |
1040 | { | |
1041 | QUIT; | |
36018d2e | 1042 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
1043 | if (name && |
1044 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1045 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1046 | if (regexp == NULL || re_exec(name+2) != 0) |
1047 | sym_arr[matches++] = (struct symbol *) msymbol; | |
1048 | } | |
1049 | ||
1050 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
1051 | compare_classes); | |
d2e6263c MS |
1052 | /* Prevent compare on first iteration. */ |
1053 | aclass[0] = 0; | |
1054 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
1055 | { |
1056 | char *p = aclass; | |
1057 | ||
1058 | QUIT; | |
36018d2e | 1059 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
1060 | name += 2; |
1061 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 1062 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 1063 | |
d2e6263c MS |
1064 | /* Copy class part of method name. */ |
1065 | while (*name && *name != ' ') | |
b81654f1 MS |
1066 | *p++ = *name++; |
1067 | *p++ = '\0'; | |
d2e6263c MS |
1068 | /* Print in columns. */ |
1069 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
1070 | } |
1071 | begin_line(); | |
1072 | } | |
1073 | else | |
1074 | printf_filtered ("No classes matching \"%s\"\n", regexp ? regexp : "*"); | |
1075 | } | |
1076 | ||
1077 | /* | |
1078 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
1079 | * | |
1080 | * Input: a string representing a selector | |
1081 | * a pointer to an array of symbol pointers | |
1082 | * possibly a pointer to a symbol found by the caller. | |
1083 | * | |
d2e6263c MS |
1084 | * Output: number of methods that implement that selector. Side |
1085 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 1086 | * |
d2e6263c MS |
1087 | * By analogy with function "find_methods" (symtab.c), builds a list |
1088 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1089 | * (symtab.c) can list them and ask the user to choose one or more. | |
1090 | * In this case the matches are objective c methods | |
1091 | * ("implementations") matching an objective c selector. | |
b81654f1 | 1092 | * |
d2e6263c MS |
1093 | * Note that it is possible for a normal (c-style) function to have |
1094 | * the same name as an objective c selector. To prevent the selector | |
1095 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1096 | * search for such a function first, and if it finds one, pass it in | |
1097 | * to us. We will then integrate it into the list. We also search | |
1098 | * for one here, among the minsyms. | |
b81654f1 | 1099 | * |
d2e6263c MS |
1100 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
1101 | * into two parts: debuggable (struct symbol) syms, and | |
1102 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1103 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1104 | * be the index of the first non-debuggable one). | |
b81654f1 MS |
1105 | */ |
1106 | ||
1107 | /* | |
1108 | * Function: total_number_of_imps (char *selector); | |
1109 | * | |
1110 | * Input: a string representing a selector | |
1111 | * Output: number of methods that implement that selector. | |
1112 | * | |
d2e6263c | 1113 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 1114 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
1115 | * matching the input, and to allocate an array of pointers to them |
1116 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
1117 | */ |
1118 | ||
1119 | char * | |
1120 | parse_selector (char *method, char **selector) | |
1121 | { | |
1122 | char *s1 = NULL; | |
1123 | char *s2 = NULL; | |
1124 | int found_quote = 0; | |
1125 | ||
1126 | char *nselector = NULL; | |
1127 | ||
e8f3fcdd | 1128 | gdb_assert (selector != NULL); |
b81654f1 MS |
1129 | |
1130 | s1 = method; | |
1131 | ||
1132 | while (isspace (*s1)) | |
1133 | s1++; | |
1134 | if (*s1 == '\'') | |
1135 | { | |
1136 | found_quote = 1; | |
1137 | s1++; | |
1138 | } | |
1139 | while (isspace (*s1)) | |
1140 | s1++; | |
1141 | ||
1142 | nselector = s1; | |
1143 | s2 = s1; | |
1144 | ||
1145 | for (;;) { | |
1146 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1147 | *s1++ = *s2; | |
1148 | else if (isspace (*s2)) | |
1149 | ; | |
1150 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1151 | break; | |
1152 | else | |
1153 | return NULL; | |
1154 | s2++; | |
1155 | } | |
1156 | *s1++ = '\0'; | |
1157 | ||
1158 | while (isspace (*s2)) | |
1159 | s2++; | |
1160 | if (found_quote) | |
1161 | { | |
1162 | if (*s2 == '\'') | |
1163 | s2++; | |
1164 | while (isspace (*s2)) | |
1165 | s2++; | |
1166 | } | |
1167 | ||
1168 | if (selector != NULL) | |
1169 | *selector = nselector; | |
1170 | ||
1171 | return s2; | |
1172 | } | |
1173 | ||
1174 | char * | |
d2e6263c MS |
1175 | parse_method (char *method, char *type, char **class, |
1176 | char **category, char **selector) | |
b81654f1 MS |
1177 | { |
1178 | char *s1 = NULL; | |
1179 | char *s2 = NULL; | |
1180 | int found_quote = 0; | |
1181 | ||
1182 | char ntype = '\0'; | |
1183 | char *nclass = NULL; | |
1184 | char *ncategory = NULL; | |
1185 | char *nselector = NULL; | |
1186 | ||
e8f3fcdd AC |
1187 | gdb_assert (type != NULL); |
1188 | gdb_assert (class != NULL); | |
1189 | gdb_assert (category != NULL); | |
1190 | gdb_assert (selector != NULL); | |
b81654f1 MS |
1191 | |
1192 | s1 = method; | |
1193 | ||
1194 | while (isspace (*s1)) | |
1195 | s1++; | |
1196 | if (*s1 == '\'') | |
1197 | { | |
1198 | found_quote = 1; | |
1199 | s1++; | |
1200 | } | |
1201 | while (isspace (*s1)) | |
1202 | s1++; | |
1203 | ||
1204 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1205 | ntype = *s1++; | |
1206 | ||
1207 | while (isspace (*s1)) | |
1208 | s1++; | |
1209 | ||
1210 | if (*s1 != '[') | |
1211 | return NULL; | |
1212 | s1++; | |
1213 | ||
1214 | nclass = s1; | |
1215 | while (isalnum (*s1) || (*s1 == '_')) | |
1216 | s1++; | |
1217 | ||
1218 | s2 = s1; | |
1219 | while (isspace (*s2)) | |
1220 | s2++; | |
1221 | ||
1222 | if (*s2 == '(') | |
1223 | { | |
1224 | s2++; | |
1225 | while (isspace (*s2)) | |
1226 | s2++; | |
1227 | ncategory = s2; | |
1228 | while (isalnum (*s2) || (*s2 == '_')) | |
1229 | s2++; | |
1230 | *s2++ = '\0'; | |
1231 | } | |
1232 | ||
d2e6263c | 1233 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1234 | *s1++ = '\0'; |
1235 | ||
1236 | nselector = s2; | |
1237 | s1 = s2; | |
1238 | ||
1239 | for (;;) { | |
1240 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1241 | *s1++ = *s2; | |
1242 | else if (isspace (*s2)) | |
1243 | ; | |
1244 | else if (*s2 == ']') | |
1245 | break; | |
1246 | else | |
1247 | return NULL; | |
1248 | s2++; | |
1249 | } | |
1250 | *s1++ = '\0'; | |
1251 | s2++; | |
1252 | ||
1253 | while (isspace (*s2)) | |
1254 | s2++; | |
1255 | if (found_quote) | |
1256 | { | |
1257 | if (*s2 != '\'') | |
1258 | return NULL; | |
1259 | s2++; | |
1260 | while (isspace (*s2)) | |
1261 | s2++; | |
1262 | } | |
1263 | ||
1264 | if (type != NULL) | |
1265 | *type = ntype; | |
1266 | if (class != NULL) | |
1267 | *class = nclass; | |
1268 | if (category != NULL) | |
1269 | *category = ncategory; | |
1270 | if (selector != NULL) | |
1271 | *selector = nselector; | |
1272 | ||
1273 | return s2; | |
1274 | } | |
1275 | ||
2f9a90b4 | 1276 | static void |
d2e6263c MS |
1277 | find_methods (struct symtab *symtab, char type, |
1278 | const char *class, const char *category, | |
1279 | const char *selector, struct symbol **syms, | |
1280 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1281 | { |
1282 | struct objfile *objfile = NULL; | |
1283 | struct minimal_symbol *msymbol = NULL; | |
1284 | struct block *block = NULL; | |
1285 | struct symbol *sym = NULL; | |
1286 | ||
1287 | char *symname = NULL; | |
1288 | ||
1289 | char ntype = '\0'; | |
1290 | char *nclass = NULL; | |
1291 | char *ncategory = NULL; | |
1292 | char *nselector = NULL; | |
1293 | ||
1294 | unsigned int csym = 0; | |
1295 | unsigned int cdebug = 0; | |
1296 | ||
1297 | static char *tmp = NULL; | |
1298 | static unsigned int tmplen = 0; | |
1299 | ||
e8f3fcdd AC |
1300 | gdb_assert (nsym != NULL); |
1301 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1302 | |
1303 | if (symtab) | |
1304 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1305 | ||
1306 | ALL_MSYMBOLS (objfile, msymbol) | |
1307 | { | |
1308 | QUIT; | |
1309 | ||
1310 | if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text)) | |
d2e6263c | 1311 | /* Not a function or method. */ |
b81654f1 MS |
1312 | continue; |
1313 | ||
1314 | if (symtab) | |
8da065d5 DC |
1315 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) || |
1316 | (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block))) | |
d2e6263c | 1317 | /* Not in the specified symtab. */ |
b81654f1 MS |
1318 | continue; |
1319 | ||
36018d2e | 1320 | symname = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
1321 | if (symname == NULL) |
1322 | continue; | |
1323 | ||
1324 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
d2e6263c | 1325 | /* Not a method name. */ |
b81654f1 MS |
1326 | continue; |
1327 | ||
1328 | while ((strlen (symname) + 1) >= tmplen) | |
1329 | { | |
1330 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1331 | tmp = xrealloc (tmp, tmplen); | |
1332 | } | |
1333 | strcpy (tmp, symname); | |
1334 | ||
1335 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1336 | continue; | |
1337 | ||
1338 | if ((type != '\0') && (ntype != type)) | |
1339 | continue; | |
1340 | ||
d2e6263c MS |
1341 | if ((class != NULL) |
1342 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
b81654f1 MS |
1343 | continue; |
1344 | ||
d2e6263c MS |
1345 | if ((category != NULL) && |
1346 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
b81654f1 MS |
1347 | continue; |
1348 | ||
d2e6263c MS |
1349 | if ((selector != NULL) && |
1350 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
b81654f1 MS |
1351 | continue; |
1352 | ||
1353 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1354 | if (sym != NULL) | |
1355 | { | |
36018d2e | 1356 | const char *newsymname = SYMBOL_NATURAL_NAME (sym); |
b81654f1 | 1357 | |
b81654f1 MS |
1358 | if (strcmp (symname, newsymname) == 0) |
1359 | { | |
d2e6263c MS |
1360 | /* Found a high-level method sym: swap it into the |
1361 | lower part of sym_arr (below num_debuggable). */ | |
b81654f1 MS |
1362 | if (syms != NULL) |
1363 | { | |
1364 | syms[csym] = syms[cdebug]; | |
1365 | syms[cdebug] = sym; | |
1366 | } | |
1367 | csym++; | |
1368 | cdebug++; | |
1369 | } | |
1370 | else | |
1371 | { | |
d2e6263c MS |
1372 | warning ( |
1373 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
b81654f1 MS |
1374 | newsymname, symname); |
1375 | if (syms != NULL) | |
1376 | syms[csym] = (struct symbol *) msymbol; | |
1377 | csym++; | |
1378 | } | |
1379 | } | |
1380 | else | |
1381 | { | |
d2e6263c | 1382 | /* Found a non-debuggable method symbol. */ |
b81654f1 MS |
1383 | if (syms != NULL) |
1384 | syms[csym] = (struct symbol *) msymbol; | |
1385 | csym++; | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | if (nsym != NULL) | |
1390 | *nsym = csym; | |
1391 | if (ndebug != NULL) | |
1392 | *ndebug = cdebug; | |
1393 | } | |
1394 | ||
1395 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1396 | char *method, struct symbol **syms, |
1397 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1398 | { |
1399 | char type = '\0'; | |
1400 | char *class = NULL; | |
1401 | char *category = NULL; | |
1402 | char *selector = NULL; | |
1403 | ||
1404 | unsigned int csym = 0; | |
1405 | unsigned int cdebug = 0; | |
1406 | ||
1407 | unsigned int ncsym = 0; | |
1408 | unsigned int ncdebug = 0; | |
1409 | ||
1410 | char *buf = NULL; | |
1411 | char *tmp = NULL; | |
1412 | ||
e8f3fcdd AC |
1413 | gdb_assert (nsym != NULL); |
1414 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1415 | |
1416 | if (nsym != NULL) | |
1417 | *nsym = 0; | |
1418 | if (ndebug != NULL) | |
1419 | *ndebug = 0; | |
1420 | ||
1421 | buf = (char *) alloca (strlen (method) + 1); | |
1422 | strcpy (buf, method); | |
1423 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1424 | ||
1425 | if (tmp == NULL) { | |
1426 | ||
b81654f1 MS |
1427 | struct symbol *sym = NULL; |
1428 | struct minimal_symbol *msym = NULL; | |
1429 | ||
1430 | strcpy (buf, method); | |
1431 | tmp = parse_selector (buf, &selector); | |
1432 | ||
1433 | if (tmp == NULL) | |
1434 | return NULL; | |
1435 | ||
cdef89d0 | 1436 | sym = lookup_symbol (selector, block, VAR_DOMAIN, 0, NULL); |
b81654f1 MS |
1437 | if (sym != NULL) |
1438 | { | |
1439 | if (syms) | |
1440 | syms[csym] = sym; | |
1441 | csym++; | |
1442 | cdebug++; | |
1443 | } | |
1444 | ||
1445 | if (sym == NULL) | |
1446 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1447 | ||
1448 | if (msym != NULL) | |
1449 | { | |
1450 | if (syms) | |
36e53c63 | 1451 | syms[csym] = (struct symbol *)msym; |
b81654f1 MS |
1452 | csym++; |
1453 | } | |
1454 | } | |
1455 | ||
1456 | if (syms != NULL) | |
d2e6263c MS |
1457 | find_methods (symtab, type, class, category, selector, |
1458 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1459 | else |
d2e6263c MS |
1460 | find_methods (symtab, type, class, category, selector, |
1461 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1462 | |
d2e6263c | 1463 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1464 | if (ncsym == 0 && ncdebug == 0) |
1465 | return method; | |
1466 | ||
1467 | /* Take debug symbols from the second batch of symbols and swap them | |
1468 | * with debug symbols from the first batch. Repeat until either the | |
1469 | * second section is out of debug symbols or the first section is | |
1470 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1471 | * packed to the beginning of the buffer. |
1472 | */ | |
b81654f1 MS |
1473 | |
1474 | if (syms != NULL) | |
1475 | { | |
1476 | while ((cdebug < csym) && (ncdebug > 0)) | |
1477 | { | |
1478 | struct symbol *s = NULL; | |
d2e6263c MS |
1479 | /* First non-debugging symbol. */ |
1480 | unsigned int i = cdebug; | |
1481 | /* Last of second batch of debug symbols. */ | |
1482 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1483 | |
1484 | s = syms[j]; | |
1485 | syms[j] = syms[i]; | |
1486 | syms[i] = s; | |
1487 | ||
d2e6263c MS |
1488 | /* We've moved a symbol from the second debug section to the |
1489 | first one. */ | |
b81654f1 MS |
1490 | cdebug++; |
1491 | ncdebug--; | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | csym += ncsym; | |
1496 | cdebug += ncdebug; | |
1497 | ||
1498 | if (nsym != NULL) | |
1499 | *nsym = csym; | |
1500 | if (ndebug != NULL) | |
1501 | *ndebug = cdebug; | |
1502 | ||
1503 | if (syms == NULL) | |
1504 | return method + (tmp - buf); | |
1505 | ||
1506 | if (csym > 1) | |
1507 | { | |
d2e6263c | 1508 | /* Sort debuggable symbols. */ |
b81654f1 | 1509 | if (cdebug > 1) |
d2e6263c MS |
1510 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1511 | compare_classes); | |
b81654f1 | 1512 | |
d2e6263c | 1513 | /* Sort minimal_symbols. */ |
b81654f1 | 1514 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1515 | qsort (&syms[cdebug], csym - cdebug, |
1516 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1517 | } |
d2e6263c MS |
1518 | /* Terminate the sym_arr list. */ |
1519 | syms[csym] = 0; | |
b81654f1 MS |
1520 | |
1521 | return method + (tmp - buf); | |
1522 | } | |
1523 | ||
b9362cc7 | 1524 | static void |
b81654f1 MS |
1525 | print_object_command (char *args, int from_tty) |
1526 | { | |
1527 | struct value *object, *function, *description; | |
36e53c63 | 1528 | CORE_ADDR string_addr, object_addr; |
b81654f1 MS |
1529 | int i = 0; |
1530 | char c = -1; | |
1531 | ||
1532 | if (!args || !*args) | |
d2e6263c MS |
1533 | error ( |
1534 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1535 | |
1536 | { | |
1537 | struct expression *expr = parse_expression (args); | |
f86f5ca3 | 1538 | struct cleanup *old_chain = |
d2e6263c | 1539 | make_cleanup (free_current_contents, &expr); |
b81654f1 MS |
1540 | int pc = 0; |
1541 | ||
5f9769d1 PH |
1542 | object = expr->language_defn->la_exp_desc->evaluate_exp |
1543 | (builtin_type_void_data_ptr, expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1544 | do_cleanups (old_chain); |
1545 | } | |
1546 | ||
36e53c63 AF |
1547 | /* Validate the address for sanity. */ |
1548 | object_addr = value_as_long (object); | |
1549 | read_memory (object_addr, &c, 1); | |
1550 | ||
7248f48e | 1551 | function = find_function_in_inferior ("_NSPrintForDebugger"); |
36e53c63 | 1552 | if (function == NULL) |
b81654f1 MS |
1553 | error ("Unable to locate _NSPrintForDebugger in child process"); |
1554 | ||
1555 | description = call_function_by_hand (function, 1, &object); | |
1556 | ||
7248f48e AF |
1557 | string_addr = value_as_long (description); |
1558 | if (string_addr == 0) | |
b81654f1 MS |
1559 | error ("object returns null description"); |
1560 | ||
1561 | read_memory (string_addr + i++, &c, 1); | |
1562 | if (c != '\0') | |
1563 | do | |
d2e6263c | 1564 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1565 | QUIT; |
1566 | printf_filtered ("%c", c); | |
1567 | read_memory (string_addr + i++, &c, 1); | |
1568 | } while (c != 0); | |
1569 | else | |
1570 | printf_filtered("<object returns empty description>"); | |
1571 | printf_filtered ("\n"); | |
1572 | } | |
1573 | ||
d2e6263c MS |
1574 | /* The data structure 'methcalls' is used to detect method calls (thru |
1575 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1576 | * and ultimately find the method being called. | |
b81654f1 MS |
1577 | */ |
1578 | ||
1579 | struct objc_methcall { | |
1580 | char *name; | |
d2e6263c | 1581 | /* Return instance method to be called. */ |
36e53c63 | 1582 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1583 | /* Start of pc range corresponding to method invocation. */ |
1584 | CORE_ADDR begin; | |
1585 | /* End of pc range corresponding to method invocation. */ | |
1586 | CORE_ADDR end; | |
b81654f1 MS |
1587 | }; |
1588 | ||
d2e6263c MS |
1589 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1590 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1591 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1592 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1593 | |
1594 | static struct objc_methcall methcalls[] = { | |
1595 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1596 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1597 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1598 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1599 | { "_objc_getClass", NULL, 0, 0}, | |
1600 | { "_objc_getMetaClass", NULL, 0, 0} | |
1601 | }; | |
1602 | ||
1603 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1604 | ||
d2e6263c MS |
1605 | /* The following function, "find_objc_msgsend", fills in the data |
1606 | * structure "objc_msgs" by finding the addresses of each of the | |
1607 | * (currently four) functions that it holds (of which objc_msgSend is | |
1608 | * the first). This must be called each time symbols are loaded, in | |
1609 | * case the functions have moved for some reason. | |
b81654f1 MS |
1610 | */ |
1611 | ||
b9362cc7 | 1612 | static void |
b81654f1 MS |
1613 | find_objc_msgsend (void) |
1614 | { | |
1615 | unsigned int i; | |
1616 | for (i = 0; i < nmethcalls; i++) { | |
1617 | ||
1618 | struct minimal_symbol *func; | |
1619 | ||
d2e6263c | 1620 | /* Try both with and without underscore. */ |
b81654f1 MS |
1621 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1622 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1623 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1624 | } | |
1625 | if (func == NULL) { | |
1626 | methcalls[i].begin = 0; | |
1627 | methcalls[i].end = 0; | |
1628 | continue; | |
1629 | } | |
1630 | ||
1631 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1632 | do { | |
1633 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1634 | } while (methcalls[i].begin == methcalls[i].end); | |
1635 | } | |
1636 | } | |
1637 | ||
1638 | /* find_objc_msgcall (replaces pc_off_limits) | |
1639 | * | |
d2e6263c MS |
1640 | * ALL that this function now does is to determine whether the input |
1641 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1642 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1643 | * if so, it returns the address of the method that will be called. | |
1644 | * | |
1645 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1646 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1647 | * returning the address of the shlib function that would be called. |
d2e6263c MS |
1648 | * That functionality has been moved into the SKIP_TRAMPOLINE_CODE and |
1649 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- | |
1650 | * dependent modules. | |
b81654f1 MS |
1651 | */ |
1652 | ||
1653 | struct objc_submethod_helper_data { | |
36e53c63 | 1654 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1655 | CORE_ADDR pc; |
1656 | CORE_ADDR *new_pc; | |
1657 | }; | |
1658 | ||
b9362cc7 | 1659 | static int |
7248f48e | 1660 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1661 | { |
d2e6263c MS |
1662 | struct objc_submethod_helper_data *s = |
1663 | (struct objc_submethod_helper_data *) arg; | |
1664 | ||
1665 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1666 | return 1; |
d2e6263c | 1667 | else |
b81654f1 | 1668 | return 0; |
b81654f1 MS |
1669 | } |
1670 | ||
b9362cc7 | 1671 | static int |
36e53c63 | 1672 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1673 | CORE_ADDR pc, |
1674 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1675 | { |
1676 | struct objc_submethod_helper_data s; | |
1677 | ||
1678 | s.f = f; | |
1679 | s.pc = pc; | |
1680 | s.new_pc = new_pc; | |
1681 | ||
1682 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1683 | (void *) &s, |
d2e6263c MS |
1684 | "Unable to determine target of Objective-C method call (ignoring):\n", |
1685 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1686 | return 1; |
d2e6263c | 1687 | else |
b81654f1 | 1688 | return 0; |
b81654f1 MS |
1689 | } |
1690 | ||
1691 | int | |
1692 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1693 | { | |
1694 | unsigned int i; | |
1695 | ||
1696 | find_objc_msgsend (); | |
5e488a7b AC |
1697 | if (new_pc != NULL) |
1698 | { | |
1699 | *new_pc = 0; | |
1700 | } | |
b81654f1 | 1701 | |
d2e6263c MS |
1702 | for (i = 0; i < nmethcalls; i++) |
1703 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1704 | { | |
1705 | if (methcalls[i].stop_at != NULL) | |
1706 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1707 | pc, new_pc); | |
1708 | else | |
1709 | return 0; | |
b81654f1 | 1710 | } |
d2e6263c | 1711 | |
b81654f1 MS |
1712 | return 0; |
1713 | } | |
1714 | ||
a78f21af | 1715 | extern initialize_file_ftype _initialize_objc_language; /* -Wmissing-prototypes */ |
b9362cc7 | 1716 | |
b81654f1 MS |
1717 | void |
1718 | _initialize_objc_language (void) | |
1719 | { | |
1720 | add_language (&objc_language_defn); | |
d2e6263c MS |
1721 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1722 | "All Objective-C selectors, or those matching REGEXP."); | |
1723 | add_info ("classes", classes_info, /* INFO CLASSES command. */ | |
1724 | "All Objective-C classes, or those matching REGEXP."); | |
b81654f1 | 1725 | add_com ("print-object", class_vars, print_object_command, |
36e53c63 | 1726 | "Ask an Objective-C object to print itself."); |
b81654f1 MS |
1727 | add_com_alias ("po", "print-object", class_vars, 1); |
1728 | } | |
1729 | ||
b81654f1 MS |
1730 | static void |
1731 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1732 | { | |
d2e6263c | 1733 | method->name = read_memory_unsigned_integer (addr + 0, 4); |
b81654f1 | 1734 | method->types = read_memory_unsigned_integer (addr + 4, 4); |
d2e6263c | 1735 | method->imp = read_memory_unsigned_integer (addr + 8, 4); |
b81654f1 MS |
1736 | } |
1737 | ||
1738 | static | |
1739 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1740 | { | |
1741 | return read_memory_unsigned_integer (addr + 4, 4); | |
1742 | } | |
1743 | ||
1744 | static void | |
1745 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1746 | struct objc_method *method) | |
1747 | { | |
e8f3fcdd | 1748 | gdb_assert (num < read_objc_methlist_nmethods (addr)); |
b81654f1 MS |
1749 | read_objc_method (addr + 8 + (12 * num), method); |
1750 | } | |
1751 | ||
1752 | static void | |
1753 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1754 | { | |
1755 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1756 | } | |
1757 | ||
1758 | static void | |
1759 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1760 | { | |
1761 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1762 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1763 | }; | |
1764 | ||
1765 | static void | |
1766 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1767 | { | |
1768 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1769 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1770 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1771 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1772 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1773 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1774 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1775 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1776 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1777 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1778 | } | |
1779 | ||
b9362cc7 | 1780 | static CORE_ADDR |
b81654f1 MS |
1781 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) |
1782 | { | |
1783 | CORE_ADDR subclass = class; | |
1784 | ||
d2e6263c MS |
1785 | while (subclass != 0) |
1786 | { | |
b81654f1 | 1787 | |
d2e6263c MS |
1788 | struct objc_class class_str; |
1789 | unsigned mlistnum = 0; | |
b81654f1 | 1790 | |
d2e6263c | 1791 | read_objc_class (subclass, &class_str); |
b81654f1 | 1792 | |
d2e6263c MS |
1793 | for (;;) |
1794 | { | |
1795 | CORE_ADDR mlist; | |
1796 | unsigned long nmethods; | |
1797 | unsigned long i; | |
b81654f1 | 1798 | |
d2e6263c MS |
1799 | mlist = read_memory_unsigned_integer (class_str.methods + |
1800 | (4 * mlistnum), 4); | |
1801 | if (mlist == 0) | |
1802 | break; | |
b81654f1 | 1803 | |
d2e6263c | 1804 | nmethods = read_objc_methlist_nmethods (mlist); |
b81654f1 | 1805 | |
d2e6263c MS |
1806 | for (i = 0; i < nmethods; i++) |
1807 | { | |
1808 | struct objc_method meth_str; | |
1809 | read_objc_methlist_method (mlist, i, &meth_str); | |
b81654f1 MS |
1810 | |
1811 | #if 0 | |
d2e6263c MS |
1812 | fprintf (stderr, |
1813 | "checking method 0x%lx against selector 0x%lx\n", | |
1814 | meth_str.name, sel); | |
b81654f1 MS |
1815 | #endif |
1816 | ||
d2e6263c | 1817 | if (meth_str.name == sel) |
1abf022c AF |
1818 | /* FIXME: hppa arch was doing a pointer dereference |
1819 | here. There needs to be a better way to do that. */ | |
1820 | return meth_str.imp; | |
d2e6263c MS |
1821 | } |
1822 | mlistnum++; | |
b81654f1 | 1823 | } |
d2e6263c | 1824 | subclass = class_str.super_class; |
b81654f1 | 1825 | } |
b81654f1 MS |
1826 | |
1827 | return 0; | |
1828 | } | |
1829 | ||
b9362cc7 | 1830 | static CORE_ADDR |
b81654f1 MS |
1831 | find_implementation (CORE_ADDR object, CORE_ADDR sel) |
1832 | { | |
1833 | struct objc_object ostr; | |
1834 | ||
d2e6263c MS |
1835 | if (object == 0) |
1836 | return 0; | |
b81654f1 | 1837 | read_objc_object (object, &ostr); |
d2e6263c MS |
1838 | if (ostr.isa == 0) |
1839 | return 0; | |
b81654f1 MS |
1840 | |
1841 | return find_implementation_from_class (ostr.isa, sel); | |
1842 | } | |
1843 | ||
a0273b2f AF |
1844 | #define OBJC_FETCH_POINTER_ARGUMENT(argi) \ |
1845 | FETCH_POINTER_ARGUMENT (get_current_frame (), argi, builtin_type_void_func_ptr) | |
1846 | ||
b81654f1 MS |
1847 | static int |
1848 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1849 | { | |
1850 | CORE_ADDR object; | |
1851 | CORE_ADDR sel; | |
1852 | CORE_ADDR res; | |
1853 | ||
a0273b2f AF |
1854 | object = OBJC_FETCH_POINTER_ARGUMENT (0); |
1855 | sel = OBJC_FETCH_POINTER_ARGUMENT (1); | |
b81654f1 MS |
1856 | |
1857 | res = find_implementation (object, sel); | |
d2e6263c MS |
1858 | if (new_pc != 0) |
1859 | *new_pc = res; | |
1860 | if (res == 0) | |
1861 | return 1; | |
b81654f1 MS |
1862 | return 0; |
1863 | } | |
1864 | ||
1865 | static int | |
1866 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1867 | { | |
1868 | CORE_ADDR object; | |
1869 | CORE_ADDR sel; | |
1870 | CORE_ADDR res; | |
1871 | ||
a0273b2f AF |
1872 | object = OBJC_FETCH_POINTER_ARGUMENT (1); |
1873 | sel = OBJC_FETCH_POINTER_ARGUMENT (2); | |
b81654f1 MS |
1874 | |
1875 | res = find_implementation (object, sel); | |
d2e6263c MS |
1876 | if (new_pc != 0) |
1877 | *new_pc = res; | |
1878 | if (res == 0) | |
1879 | return 1; | |
b81654f1 MS |
1880 | return 0; |
1881 | } | |
1882 | ||
1883 | static int | |
1884 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1885 | { | |
1886 | struct objc_super sstr; | |
1887 | ||
1888 | CORE_ADDR super; | |
1889 | CORE_ADDR sel; | |
1890 | CORE_ADDR res; | |
1891 | ||
a0273b2f AF |
1892 | super = OBJC_FETCH_POINTER_ARGUMENT (0); |
1893 | sel = OBJC_FETCH_POINTER_ARGUMENT (1); | |
b81654f1 MS |
1894 | |
1895 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1896 | if (sstr.class == 0) |
1897 | return 0; | |
b81654f1 MS |
1898 | |
1899 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1900 | if (new_pc != 0) |
1901 | *new_pc = res; | |
1902 | if (res == 0) | |
1903 | return 1; | |
b81654f1 MS |
1904 | return 0; |
1905 | } | |
1906 | ||
1907 | static int | |
1908 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1909 | { | |
1910 | struct objc_super sstr; | |
1911 | ||
1912 | CORE_ADDR super; | |
1913 | CORE_ADDR sel; | |
1914 | CORE_ADDR res; | |
1915 | ||
a0273b2f AF |
1916 | super = OBJC_FETCH_POINTER_ARGUMENT (1); |
1917 | sel = OBJC_FETCH_POINTER_ARGUMENT (2); | |
b81654f1 MS |
1918 | |
1919 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1920 | if (sstr.class == 0) |
1921 | return 0; | |
b81654f1 MS |
1922 | |
1923 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1924 | if (new_pc != 0) |
1925 | *new_pc = res; | |
1926 | if (res == 0) | |
1927 | return 1; | |
b81654f1 MS |
1928 | return 0; |
1929 | } |