Commit | Line | Data |
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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
437666f8 | 3 | Copyright 2002 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" | |
44 | ||
45 | #include <ctype.h> | |
46 | ||
47 | struct objc_object { | |
48 | CORE_ADDR isa; | |
49 | }; | |
50 | ||
51 | struct objc_class { | |
52 | CORE_ADDR isa; | |
53 | CORE_ADDR super_class; | |
54 | CORE_ADDR name; | |
55 | long version; | |
56 | long info; | |
57 | long instance_size; | |
58 | CORE_ADDR ivars; | |
59 | CORE_ADDR methods; | |
60 | CORE_ADDR cache; | |
61 | CORE_ADDR protocols; | |
62 | }; | |
63 | ||
64 | struct objc_super { | |
65 | CORE_ADDR receiver; | |
66 | CORE_ADDR class; | |
67 | }; | |
68 | ||
69 | struct objc_method { | |
70 | CORE_ADDR name; | |
71 | CORE_ADDR types; | |
72 | CORE_ADDR imp; | |
73 | }; | |
74 | ||
75 | /* Complaints about ObjC classes, selectors, etc. */ | |
76 | ||
b81654f1 MS |
77 | #if (!defined __GNUC__ || __GNUC__ < 2 || __GNUC_MINOR__ < (defined __cplusplus ? 6 : 4)) |
78 | #define __CHECK_FUNCTION ((__const char *) 0) | |
79 | #else | |
80 | #define __CHECK_FUNCTION __PRETTY_FUNCTION__ | |
81 | #endif | |
82 | ||
83 | #define CHECK(expression) \ | |
84 | ((void) ((expression) ? 0 : gdb_check (#expression, __FILE__, __LINE__, \ | |
85 | __CHECK_FUNCTION))) | |
86 | ||
87 | #define CHECK_FATAL(expression) \ | |
88 | ((void) ((expression) ? 0 : gdb_check_fatal (#expression, __FILE__, \ | |
89 | __LINE__, __CHECK_FUNCTION))) | |
90 | ||
d2e6263c MS |
91 | static void |
92 | gdb_check (const char *str, const char *file, | |
93 | unsigned int line, const char *func) | |
b81654f1 MS |
94 | { |
95 | error ("assertion failure on line %u of \"%s\" in function \"%s\": %s\n", | |
96 | line, file, func, str); | |
97 | } | |
98 | ||
d2e6263c MS |
99 | static void |
100 | gdb_check_fatal (const char *str, const char *file, | |
101 | unsigned int line, const char *func) | |
b81654f1 MS |
102 | { |
103 | internal_error (file, line, | |
104 | "assertion failure in function \"%s\": %s\n", func, str); | |
105 | } | |
106 | ||
d2e6263c MS |
107 | /* Lookup a structure type named "struct NAME", visible in lexical |
108 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
109 | suitably defined. */ | |
b81654f1 MS |
110 | |
111 | struct symbol * | |
112 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
113 | { | |
114 | register struct symbol *sym; | |
115 | ||
d2e6263c MS |
116 | sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0, |
117 | (struct symtab **) NULL); | |
b81654f1 MS |
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 | |
d2e6263c MS |
131 | error ("This context has class, union or enum %s, not a struct.", |
132 | name); | |
b81654f1 MS |
133 | } |
134 | return sym; | |
135 | } | |
136 | ||
137 | CORE_ADDR | |
138 | lookup_objc_class (char *classname) | |
139 | { | |
140 | struct value * function, *classval; | |
141 | ||
142 | if (! target_has_execution) | |
143 | { | |
d2e6263c | 144 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
145 | return 0; |
146 | } | |
147 | ||
148 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
149 | function = find_function_in_inferior("objc_lookUpClass"); | |
150 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) | |
151 | function = find_function_in_inferior("objc_lookup_class"); | |
152 | else | |
153 | { | |
9d1127c5 | 154 | complaint (&symfile_complaints, "no way to lookup Objective-C classes"); |
b81654f1 MS |
155 | return 0; |
156 | } | |
157 | ||
158 | classval = value_string (classname, strlen (classname) + 1); | |
159 | classval = value_coerce_array (classval); | |
160 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
161 | 1, &classval)); | |
162 | } | |
163 | ||
164 | int | |
165 | lookup_child_selector (char *selname) | |
166 | { | |
167 | struct value * function, *selstring; | |
168 | ||
169 | if (! target_has_execution) | |
170 | { | |
d2e6263c | 171 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
172 | return 0; |
173 | } | |
174 | ||
175 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
176 | function = find_function_in_inferior("sel_getUid"); | |
177 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) | |
178 | function = find_function_in_inferior("sel_get_any_uid"); | |
179 | else | |
180 | { | |
9d1127c5 | 181 | complaint (&symfile_complaints, "no way to lookup Objective-C selectors"); |
b81654f1 MS |
182 | return 0; |
183 | } | |
184 | ||
d2e6263c MS |
185 | selstring = value_coerce_array (value_string (selname, |
186 | strlen (selname) + 1)); | |
b81654f1 MS |
187 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
188 | } | |
189 | ||
190 | struct value * | |
191 | value_nsstring (char *ptr, int len) | |
192 | { | |
193 | struct value *stringValue[3]; | |
194 | struct value *function, *nsstringValue; | |
195 | struct symbol *sym; | |
196 | struct type *type; | |
197 | ||
198 | if (!target_has_execution) | |
d2e6263c | 199 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 MS |
200 | |
201 | if (!(sym = lookup_struct_typedef("NSString", 0, 1)) && | |
202 | !(sym = lookup_struct_typedef("NXString", 0, 1))) | |
203 | type = lookup_pointer_type(builtin_type_void); | |
204 | else | |
205 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
206 | ||
207 | stringValue[2] = value_string(ptr, len); | |
208 | stringValue[2] = value_coerce_array(stringValue[2]); | |
d2e6263c | 209 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
210 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
211 | { | |
212 | function = find_function_in_inferior("_NSNewStringFromCString"); | |
213 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
214 | } | |
215 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
216 | { | |
217 | function = find_function_in_inferior("istr"); | |
218 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
219 | } | |
220 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
221 | { | |
222 | function = find_function_in_inferior("+[NSString stringWithCString:]"); | |
223 | stringValue[0] = value_from_longest | |
224 | (builtin_type_long, lookup_objc_class ("NSString")); | |
225 | stringValue[1] = value_from_longest | |
226 | (builtin_type_long, lookup_child_selector ("stringWithCString:")); | |
227 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); | |
228 | } | |
229 | else | |
230 | error ("NSString: internal error -- no way to create new NSString"); | |
231 | ||
232 | VALUE_TYPE(nsstringValue) = type; | |
233 | return nsstringValue; | |
234 | } | |
235 | ||
d2e6263c | 236 | /* Objective-C name demangling. */ |
b81654f1 MS |
237 | |
238 | char * | |
239 | objc_demangle (const char *mangled) | |
240 | { | |
241 | char *demangled, *cp; | |
242 | ||
243 | if (mangled[0] == '_' && | |
244 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
245 | mangled[2] == '_') | |
246 | { | |
247 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
248 | ||
249 | if (mangled[1] == 'i') | |
250 | *cp++ = '-'; /* for instance method */ | |
251 | else | |
252 | *cp++ = '+'; /* for class method */ | |
253 | ||
254 | *cp++ = '['; /* opening left brace */ | |
255 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
256 | ||
257 | while (*cp && *cp == '_') | |
258 | cp++; /* skip any initial underbars in class name */ | |
259 | ||
7248f48e AF |
260 | cp = strchr(cp, '_'); |
261 | if (!cp) /* find first non-initial underbar */ | |
b81654f1 | 262 | { |
7248f48e | 263 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
264 | return NULL; |
265 | } | |
266 | if (cp[1] == '_') { /* easy case: no category name */ | |
267 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
268 | strcpy(cp, mangled + (cp - demangled) + 2); | |
269 | } | |
270 | else { | |
271 | *cp++ = '('; /* less easy case: category name */ | |
7248f48e AF |
272 | cp = strchr(cp, '_'); |
273 | if (!cp) | |
b81654f1 | 274 | { |
7248f48e | 275 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
276 | return NULL; |
277 | } | |
278 | *cp++ = ')'; | |
d2e6263c | 279 | *cp++ = ' '; /* overwriting 1st char of method name... */ |
b81654f1 MS |
280 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
281 | } | |
282 | ||
283 | while (*cp && *cp == '_') | |
284 | cp++; /* skip any initial underbars in method name */ | |
285 | ||
286 | for (; *cp; cp++) | |
287 | if (*cp == '_') | |
288 | *cp = ':'; /* replace remaining '_' with ':' */ | |
289 | ||
290 | *cp++ = ']'; /* closing right brace */ | |
291 | *cp++ = 0; /* string terminator */ | |
292 | return demangled; | |
293 | } | |
294 | else | |
d2e6263c | 295 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
296 | } |
297 | ||
d2e6263c MS |
298 | /* Print the character C on STREAM as part of the contents of a |
299 | literal string whose delimiter is QUOTER. Note that that format | |
300 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
301 | |
302 | static void | |
303 | objc_emit_char (register int c, struct ui_file *stream, int quoter) | |
304 | { | |
305 | ||
d2e6263c | 306 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
307 | |
308 | if (PRINT_LITERAL_FORM (c)) | |
309 | { | |
310 | if (c == '\\' || c == quoter) | |
311 | { | |
312 | fputs_filtered ("\\", stream); | |
313 | } | |
314 | fprintf_filtered (stream, "%c", c); | |
315 | } | |
316 | else | |
317 | { | |
318 | switch (c) | |
319 | { | |
320 | case '\n': | |
321 | fputs_filtered ("\\n", stream); | |
322 | break; | |
323 | case '\b': | |
324 | fputs_filtered ("\\b", stream); | |
325 | break; | |
326 | case '\t': | |
327 | fputs_filtered ("\\t", stream); | |
328 | break; | |
329 | case '\f': | |
330 | fputs_filtered ("\\f", stream); | |
331 | break; | |
332 | case '\r': | |
333 | fputs_filtered ("\\r", stream); | |
334 | break; | |
335 | case '\033': | |
336 | fputs_filtered ("\\e", stream); | |
337 | break; | |
338 | case '\007': | |
339 | fputs_filtered ("\\a", stream); | |
340 | break; | |
341 | default: | |
342 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
343 | break; | |
344 | } | |
345 | } | |
346 | } | |
347 | ||
348 | static void | |
349 | objc_printchar (int c, struct ui_file *stream) | |
350 | { | |
351 | fputs_filtered ("'", stream); | |
352 | objc_emit_char (c, stream, '\''); | |
353 | fputs_filtered ("'", stream); | |
354 | } | |
355 | ||
d2e6263c MS |
356 | /* Print the character string STRING, printing at most LENGTH |
357 | characters. Printing stops early if the number hits print_max; | |
358 | repeat counts are printed as appropriate. Print ellipses at the | |
359 | end if we had to stop before printing LENGTH characters, or if | |
360 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
361 | |
362 | static void | |
d2e6263c | 363 | objc_printstr (struct ui_file *stream, char *string, |
36e53c63 | 364 | unsigned int length, int width, int force_ellipses) |
b81654f1 MS |
365 | { |
366 | register unsigned int i; | |
367 | unsigned int things_printed = 0; | |
368 | int in_quotes = 0; | |
369 | int need_comma = 0; | |
370 | extern int inspect_it; | |
371 | extern int repeat_count_threshold; | |
372 | extern int print_max; | |
373 | ||
374 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
375 | the last byte of it is a null, we don't print that, in |
376 | traditional C style. */ | |
b81654f1 MS |
377 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
378 | length--; | |
379 | ||
380 | if (length == 0) | |
381 | { | |
382 | fputs_filtered ("\"\"", stream); | |
383 | return; | |
384 | } | |
385 | ||
386 | for (i = 0; i < length && things_printed < print_max; ++i) | |
387 | { | |
d2e6263c MS |
388 | /* Position of the character we are examining to see whether it |
389 | is repeated. */ | |
b81654f1 MS |
390 | unsigned int rep1; |
391 | /* Number of repetitions we have detected so far. */ | |
392 | unsigned int reps; | |
393 | ||
394 | QUIT; | |
395 | ||
396 | if (need_comma) | |
397 | { | |
398 | fputs_filtered (", ", stream); | |
399 | need_comma = 0; | |
400 | } | |
401 | ||
402 | rep1 = i + 1; | |
403 | reps = 1; | |
404 | while (rep1 < length && string[rep1] == string[i]) | |
405 | { | |
406 | ++rep1; | |
407 | ++reps; | |
408 | } | |
409 | ||
410 | if (reps > repeat_count_threshold) | |
411 | { | |
412 | if (in_quotes) | |
413 | { | |
414 | if (inspect_it) | |
415 | fputs_filtered ("\\\", ", stream); | |
416 | else | |
417 | fputs_filtered ("\", ", stream); | |
418 | in_quotes = 0; | |
419 | } | |
420 | objc_printchar (string[i], stream); | |
421 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
422 | i = rep1 - 1; | |
423 | things_printed += repeat_count_threshold; | |
424 | need_comma = 1; | |
425 | } | |
426 | else | |
427 | { | |
428 | if (!in_quotes) | |
429 | { | |
430 | if (inspect_it) | |
431 | fputs_filtered ("\\\"", stream); | |
432 | else | |
433 | fputs_filtered ("\"", stream); | |
434 | in_quotes = 1; | |
435 | } | |
436 | objc_emit_char (string[i], stream, '"'); | |
437 | ++things_printed; | |
438 | } | |
439 | } | |
440 | ||
441 | /* Terminate the quotes if necessary. */ | |
442 | if (in_quotes) | |
443 | { | |
444 | if (inspect_it) | |
445 | fputs_filtered ("\\\"", stream); | |
446 | else | |
447 | fputs_filtered ("\"", stream); | |
448 | } | |
449 | ||
450 | if (force_ellipses || i < length) | |
451 | fputs_filtered ("...", stream); | |
452 | } | |
453 | ||
d2e6263c MS |
454 | /* Create a fundamental C type using default reasonable for the |
455 | current target. | |
456 | ||
457 | Some object/debugging file formats (DWARF version 1, COFF, etc) do | |
458 | not define fundamental types such as "int" or "double". Others | |
459 | (stabs or DWARF version 2, etc) do define fundamental types. For | |
460 | the formats which don't provide fundamental types, gdb can create | |
461 | such types using this function. | |
462 | ||
463 | FIXME: Some compilers distinguish explicitly signed integral types | |
464 | (signed short, signed int, signed long) from "regular" integral | |
465 | types (short, int, long) in the debugging information. There is | |
466 | some disagreement as to how useful this feature is. In particular, | |
467 | gcc does not support this. Also, only some debugging formats allow | |
468 | the distinction to be passed on to a debugger. For now, we always | |
469 | just use "short", "int", or "long" as the type name, for both the | |
470 | implicit and explicitly signed types. This also makes life easier | |
471 | for the gdb test suite since we don't have to account for the | |
472 | differences in output depending upon what the compiler and | |
473 | debugging format support. We will probably have to re-examine the | |
474 | issue when gdb starts taking it's fundamental type information | |
475 | directly from the debugging information supplied by the compiler. | |
476 | fnf@cygnus.com */ | |
b81654f1 MS |
477 | |
478 | static struct type * | |
479 | objc_create_fundamental_type (struct objfile *objfile, int typeid) | |
480 | { | |
481 | register struct type *type = NULL; | |
482 | ||
483 | switch (typeid) | |
484 | { | |
485 | default: | |
d2e6263c MS |
486 | /* FIXME: For now, if we are asked to produce a type not in |
487 | this language, create the equivalent of a C integer type | |
488 | with the name "<?type?>". When all the dust settles from | |
489 | the type reconstruction work, this should probably become | |
490 | an error. */ | |
b81654f1 MS |
491 | type = init_type (TYPE_CODE_INT, |
492 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
493 | 0, "<?type?>", objfile); | |
494 | warning ("internal error: no C/C++ fundamental type %d", typeid); | |
495 | break; | |
496 | case FT_VOID: | |
497 | type = init_type (TYPE_CODE_VOID, | |
498 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
499 | 0, "void", objfile); | |
500 | break; | |
501 | case FT_CHAR: | |
502 | type = init_type (TYPE_CODE_INT, | |
503 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
504 | 0, "char", objfile); | |
505 | break; | |
506 | case FT_SIGNED_CHAR: | |
507 | type = init_type (TYPE_CODE_INT, | |
508 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
509 | 0, "signed char", objfile); | |
510 | break; | |
511 | case FT_UNSIGNED_CHAR: | |
512 | type = init_type (TYPE_CODE_INT, | |
513 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
514 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); | |
515 | break; | |
516 | case FT_SHORT: | |
517 | type = init_type (TYPE_CODE_INT, | |
518 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
519 | 0, "short", objfile); | |
520 | break; | |
521 | case FT_SIGNED_SHORT: | |
522 | type = init_type (TYPE_CODE_INT, | |
523 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
524 | 0, "short", objfile); /* FIXME-fnf */ | |
525 | break; | |
526 | case FT_UNSIGNED_SHORT: | |
527 | type = init_type (TYPE_CODE_INT, | |
528 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
529 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); | |
530 | break; | |
531 | case FT_INTEGER: | |
532 | type = init_type (TYPE_CODE_INT, | |
533 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
534 | 0, "int", objfile); | |
535 | break; | |
536 | case FT_SIGNED_INTEGER: | |
537 | type = init_type (TYPE_CODE_INT, | |
538 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
539 | 0, "int", objfile); /* FIXME -fnf */ | |
540 | break; | |
541 | case FT_UNSIGNED_INTEGER: | |
542 | type = init_type (TYPE_CODE_INT, | |
543 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
544 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); | |
545 | break; | |
546 | case FT_LONG: | |
547 | type = init_type (TYPE_CODE_INT, | |
548 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
549 | 0, "long", objfile); | |
550 | break; | |
551 | case FT_SIGNED_LONG: | |
552 | type = init_type (TYPE_CODE_INT, | |
553 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
554 | 0, "long", objfile); /* FIXME -fnf */ | |
555 | break; | |
556 | case FT_UNSIGNED_LONG: | |
557 | type = init_type (TYPE_CODE_INT, | |
558 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
559 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); | |
560 | break; | |
561 | case FT_LONG_LONG: | |
562 | type = init_type (TYPE_CODE_INT, | |
563 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
564 | 0, "long long", objfile); | |
565 | break; | |
566 | case FT_SIGNED_LONG_LONG: | |
567 | type = init_type (TYPE_CODE_INT, | |
568 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
569 | 0, "signed long long", objfile); | |
570 | break; | |
571 | case FT_UNSIGNED_LONG_LONG: | |
572 | type = init_type (TYPE_CODE_INT, | |
573 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
574 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
575 | break; | |
576 | case FT_FLOAT: | |
577 | type = init_type (TYPE_CODE_FLT, | |
578 | TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
579 | 0, "float", objfile); | |
580 | break; | |
581 | case FT_DBL_PREC_FLOAT: | |
582 | type = init_type (TYPE_CODE_FLT, | |
583 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
584 | 0, "double", objfile); | |
585 | break; | |
586 | case FT_EXT_PREC_FLOAT: | |
587 | type = init_type (TYPE_CODE_FLT, | |
588 | TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, | |
589 | 0, "long double", objfile); | |
590 | break; | |
591 | } | |
592 | return (type); | |
593 | } | |
594 | ||
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}, | |
630 | {NULL, 0, 0, 0} | |
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, | |
662 | objc_parse, | |
663 | objc_error, | |
664 | evaluate_subexp_standard, | |
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 */ | |
672 | {"", "", "", ""}, /* Binary format info */ | |
673 | {"0%lo", "0", "o", ""}, /* Octal format info */ | |
674 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
675 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
d2e6263c MS |
676 | objc_op_print_tab, /* Expression operators for printing */ |
677 | 1, /* C-style arrays */ | |
b81654f1 MS |
678 | 0, /* String lower bound */ |
679 | &builtin_type_char, /* Type of string elements */ | |
680 | LANG_MAGIC | |
681 | }; | |
682 | ||
683 | /* | |
684 | * ObjC: | |
d2e6263c | 685 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
686 | */ |
687 | ||
d2e6263c | 688 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
689 | { |
690 | struct selname *next; | |
691 | char *msglist_sel; | |
692 | int msglist_len; | |
693 | }; | |
694 | ||
695 | static int msglist_len; | |
696 | static struct selname *selname_chain; | |
697 | static char *msglist_sel; | |
698 | ||
699 | void | |
700 | start_msglist(void) | |
701 | { | |
702 | register struct selname *new = | |
703 | (struct selname *) xmalloc (sizeof (struct selname)); | |
704 | ||
705 | new->next = selname_chain; | |
706 | new->msglist_len = msglist_len; | |
707 | new->msglist_sel = msglist_sel; | |
708 | msglist_len = 0; | |
709 | msglist_sel = (char *)xmalloc(1); | |
710 | *msglist_sel = 0; | |
711 | selname_chain = new; | |
712 | } | |
713 | ||
714 | void | |
715 | add_msglist(struct stoken *str, int addcolon) | |
716 | { | |
717 | char *s, *p; | |
718 | int len, plen; | |
719 | ||
d2e6263c MS |
720 | if (str == 0) { /* Unnamed arg, or... */ |
721 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
722 | msglist_len++; |
723 | return; | |
724 | } | |
725 | p = ""; | |
726 | plen = 0; | |
727 | } else { | |
728 | p = str->ptr; | |
729 | plen = str->length; | |
730 | } | |
731 | len = plen + strlen(msglist_sel) + 2; | |
732 | s = (char *)xmalloc(len); | |
733 | strcpy(s, msglist_sel); | |
734 | strncat(s, p, plen); | |
7248f48e | 735 | xfree(msglist_sel); |
b81654f1 MS |
736 | msglist_sel = s; |
737 | if (addcolon) { | |
738 | s[len-2] = ':'; | |
739 | s[len-1] = 0; | |
740 | msglist_len++; | |
741 | } else | |
742 | s[len-2] = '\0'; | |
743 | } | |
744 | ||
745 | int | |
746 | end_msglist(void) | |
747 | { | |
748 | register int val = msglist_len; | |
749 | register struct selname *sel = selname_chain; | |
750 | register char *p = msglist_sel; | |
751 | int selid; | |
752 | ||
753 | selname_chain = sel->next; | |
754 | msglist_len = sel->msglist_len; | |
755 | msglist_sel = sel->msglist_sel; | |
756 | selid = lookup_child_selector(p); | |
757 | if (!selid) | |
758 | error("Can't find selector \"%s\"", p); | |
759 | write_exp_elt_longcst (selid); | |
7248f48e | 760 | xfree(p); |
d2e6263c | 761 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 762 | xfree(sel); |
b81654f1 MS |
763 | |
764 | return val; | |
765 | } | |
766 | ||
767 | /* | |
768 | * Function: specialcmp (char *a, char *b) | |
769 | * | |
770 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 771 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
772 | */ |
773 | ||
774 | int specialcmp(char *a, char *b) | |
775 | { | |
776 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
777 | { | |
778 | if (*a != *b) | |
779 | return *a - *b; | |
780 | a++, b++; | |
781 | } | |
782 | if (*a && *a != ' ' && *a != ']') | |
783 | return 1; /* a is longer therefore greater */ | |
784 | if (*b && *b != ' ' && *b != ']') | |
785 | return -1; /* a is shorter therefore lesser */ | |
786 | return 0; /* a and b are identical */ | |
787 | } | |
788 | ||
789 | /* | |
36e53c63 | 790 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 791 | * |
d2e6263c MS |
792 | * Comparison function for use with qsort. Arguments are symbols or |
793 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
794 | */ |
795 | ||
796 | static int | |
36e53c63 | 797 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
798 | { |
799 | char *aname, *bname; | |
800 | ||
7248f48e AF |
801 | aname = SYMBOL_SOURCE_NAME (*(struct symbol **) a); |
802 | bname = SYMBOL_SOURCE_NAME (*(struct symbol **) b); | |
803 | if (aname == NULL || bname == NULL) | |
b81654f1 MS |
804 | error ("internal: compare_selectors(1)"); |
805 | ||
7248f48e AF |
806 | aname = strchr(aname, ' '); |
807 | bname = strchr(bname, ' '); | |
808 | if (aname == NULL || bname == NULL) | |
b81654f1 MS |
809 | error ("internal: compare_selectors(2)"); |
810 | ||
811 | return specialcmp (aname+1, bname+1); | |
812 | } | |
813 | ||
814 | /* | |
815 | * Function: selectors_info (regexp, from_tty) | |
816 | * | |
d2e6263c MS |
817 | * Implements the "Info selectors" command. Takes an optional regexp |
818 | * arg. Lists all objective c selectors that match the regexp. Works | |
819 | * by grepping thru all symbols for objective c methods. Output list | |
820 | * is sorted and uniqued. | |
b81654f1 MS |
821 | */ |
822 | ||
823 | static void | |
824 | selectors_info (char *regexp, int from_tty) | |
825 | { | |
826 | struct objfile *objfile; | |
827 | struct minimal_symbol *msymbol; | |
828 | char *name; | |
829 | char *val; | |
830 | int matches = 0; | |
831 | int maxlen = 0; | |
832 | int ix; | |
833 | char myregexp[2048]; | |
834 | char asel[256]; | |
835 | struct symbol **sym_arr; | |
836 | int plusminus = 0; | |
837 | ||
838 | if (regexp == NULL) | |
d2e6263c | 839 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
840 | else |
841 | { | |
d2e6263c MS |
842 | if (*regexp == '+' || *regexp == '-') |
843 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
844 | plusminus = *regexp++; |
845 | while (*regexp == ' ' || *regexp == '\t') | |
846 | regexp++; | |
847 | } | |
848 | if (*regexp == '\0') | |
849 | strcpy(myregexp, ".*]"); | |
850 | else | |
851 | { | |
852 | strcpy(myregexp, regexp); | |
853 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
854 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
855 | else | |
856 | strcat(myregexp, ".*]"); | |
857 | } | |
858 | } | |
859 | ||
860 | if (regexp != NULL) | |
861 | if (0 != (val = re_comp (myregexp))) | |
862 | error ("Invalid regexp (%s): %s", val, regexp); | |
863 | ||
d2e6263c | 864 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
865 | ALL_MSYMBOLS (objfile, msymbol) |
866 | { | |
867 | QUIT; | |
7248f48e AF |
868 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
869 | if (name == NULL) | |
b81654f1 MS |
870 | name = SYMBOL_NAME (msymbol); |
871 | if (name && | |
872 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 873 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 874 | { |
d2e6263c | 875 | /* Filter for class/instance methods. */ |
b81654f1 | 876 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
877 | continue; |
878 | /* Find selector part. */ | |
879 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
880 | if (regexp == NULL || re_exec(++name) != 0) |
881 | { | |
882 | char *mystart = name; | |
883 | char *myend = (char *) strchr(mystart, ']'); | |
884 | ||
885 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 886 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
887 | matches++; |
888 | } | |
889 | } | |
890 | } | |
891 | if (matches) | |
892 | { | |
893 | printf_filtered ("Selectors matching \"%s\":\n\n", | |
894 | regexp ? regexp : "*"); | |
895 | ||
896 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
897 | matches = 0; | |
898 | ALL_MSYMBOLS (objfile, msymbol) | |
899 | { | |
900 | QUIT; | |
7248f48e AF |
901 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
902 | if (name == NULL) | |
b81654f1 MS |
903 | name = SYMBOL_NAME (msymbol); |
904 | if (name && | |
905 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 906 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 907 | { |
d2e6263c | 908 | /* Filter for class/instance methods. */ |
b81654f1 | 909 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
910 | continue; |
911 | /* Find selector part. */ | |
912 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
913 | if (regexp == NULL || re_exec(++name) != 0) |
914 | sym_arr[matches++] = (struct symbol *) msymbol; | |
915 | } | |
916 | } | |
917 | ||
918 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
919 | compare_selectors); | |
d2e6263c MS |
920 | /* Prevent compare on first iteration. */ |
921 | asel[0] = 0; | |
922 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
923 | { |
924 | char *p = asel; | |
925 | ||
926 | QUIT; | |
7248f48e AF |
927 | name = SYMBOL_DEMANGLED_NAME (sym_arr[ix]); |
928 | if (name == NULL) | |
b81654f1 MS |
929 | name = SYMBOL_NAME (sym_arr[ix]); |
930 | name = strchr (name, ' ') + 1; | |
931 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 932 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 933 | |
d2e6263c MS |
934 | /* Copy selector part. */ |
935 | while (*name && *name != ']') | |
b81654f1 MS |
936 | *p++ = *name++; |
937 | *p++ = '\0'; | |
d2e6263c MS |
938 | /* Print in columns. */ |
939 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
940 | } |
941 | begin_line(); | |
942 | } | |
943 | else | |
944 | printf_filtered ("No selectors matching \"%s\"\n", regexp ? regexp : "*"); | |
945 | } | |
946 | ||
947 | /* | |
36e53c63 | 948 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 949 | * |
d2e6263c MS |
950 | * Comparison function for use with qsort. Arguments are symbols or |
951 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
952 | */ |
953 | ||
954 | static int | |
36e53c63 | 955 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
956 | { |
957 | char *aname, *bname; | |
958 | ||
7248f48e AF |
959 | aname = SYMBOL_SOURCE_NAME (*(struct symbol **) a); |
960 | bname = SYMBOL_SOURCE_NAME (*(struct symbol **) b); | |
961 | if (aname == NULL || bname == NULL) | |
b81654f1 MS |
962 | error ("internal: compare_classes(1)"); |
963 | ||
964 | return specialcmp (aname+1, bname+1); | |
965 | } | |
966 | ||
967 | /* | |
968 | * Function: classes_info(regexp, from_tty) | |
969 | * | |
970 | * Implements the "info classes" command for objective c classes. | |
971 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
972 | * Works by grepping thru the list of objective c methods. List will |
973 | * be sorted and uniqued (since one class may have many methods). | |
974 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
975 | */ |
976 | ||
977 | static void | |
978 | classes_info (char *regexp, int from_tty) | |
979 | { | |
980 | struct objfile *objfile; | |
981 | struct minimal_symbol *msymbol; | |
982 | char *name; | |
983 | char *val; | |
984 | int matches = 0; | |
985 | int maxlen = 0; | |
986 | int ix; | |
987 | char myregexp[2048]; | |
988 | char aclass[256]; | |
989 | struct symbol **sym_arr; | |
990 | ||
991 | if (regexp == NULL) | |
d2e6263c | 992 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
993 | else |
994 | { | |
995 | strcpy(myregexp, regexp); | |
996 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 997 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
998 | myregexp[strlen(myregexp) - 1] = ' '; |
999 | else | |
1000 | strcat(myregexp, ".* "); | |
1001 | } | |
1002 | ||
1003 | if (regexp != NULL) | |
1004 | if (0 != (val = re_comp (myregexp))) | |
1005 | error ("Invalid regexp (%s): %s", val, regexp); | |
1006 | ||
d2e6263c | 1007 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
1008 | ALL_MSYMBOLS (objfile, msymbol) |
1009 | { | |
1010 | QUIT; | |
7248f48e AF |
1011 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
1012 | if (name == NULL) | |
b81654f1 MS |
1013 | name = SYMBOL_NAME (msymbol); |
1014 | if (name && | |
1015 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1016 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1017 | if (regexp == NULL || re_exec(name+2) != 0) |
1018 | { | |
d2e6263c MS |
1019 | /* Compute length of classname part. */ |
1020 | char *mystart = name + 2; | |
b81654f1 MS |
1021 | char *myend = (char *) strchr(mystart, ' '); |
1022 | ||
1023 | if (myend && (myend - mystart > maxlen)) | |
1024 | maxlen = myend - mystart; | |
1025 | matches++; | |
1026 | } | |
1027 | } | |
1028 | if (matches) | |
1029 | { | |
1030 | printf_filtered ("Classes matching \"%s\":\n\n", | |
1031 | regexp ? regexp : "*"); | |
1032 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
1033 | matches = 0; | |
1034 | ALL_MSYMBOLS (objfile, msymbol) | |
1035 | { | |
1036 | QUIT; | |
7248f48e AF |
1037 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
1038 | if (name == NULL) | |
b81654f1 MS |
1039 | name = SYMBOL_NAME (msymbol); |
1040 | if (name && | |
1041 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1042 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1043 | if (regexp == NULL || re_exec(name+2) != 0) |
1044 | sym_arr[matches++] = (struct symbol *) msymbol; | |
1045 | } | |
1046 | ||
1047 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
1048 | compare_classes); | |
d2e6263c MS |
1049 | /* Prevent compare on first iteration. */ |
1050 | aclass[0] = 0; | |
1051 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
1052 | { |
1053 | char *p = aclass; | |
1054 | ||
1055 | QUIT; | |
7248f48e AF |
1056 | name = SYMBOL_DEMANGLED_NAME (sym_arr[ix]); |
1057 | if (name == NULL) | |
b81654f1 MS |
1058 | name = SYMBOL_NAME (sym_arr[ix]); |
1059 | name += 2; | |
1060 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 1061 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 1062 | |
d2e6263c MS |
1063 | /* Copy class part of method name. */ |
1064 | while (*name && *name != ' ') | |
b81654f1 MS |
1065 | *p++ = *name++; |
1066 | *p++ = '\0'; | |
d2e6263c MS |
1067 | /* Print in columns. */ |
1068 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
1069 | } |
1070 | begin_line(); | |
1071 | } | |
1072 | else | |
1073 | printf_filtered ("No classes matching \"%s\"\n", regexp ? regexp : "*"); | |
1074 | } | |
1075 | ||
1076 | /* | |
1077 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
1078 | * | |
1079 | * Input: a string representing a selector | |
1080 | * a pointer to an array of symbol pointers | |
1081 | * possibly a pointer to a symbol found by the caller. | |
1082 | * | |
d2e6263c MS |
1083 | * Output: number of methods that implement that selector. Side |
1084 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 1085 | * |
d2e6263c MS |
1086 | * By analogy with function "find_methods" (symtab.c), builds a list |
1087 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1088 | * (symtab.c) can list them and ask the user to choose one or more. | |
1089 | * In this case the matches are objective c methods | |
1090 | * ("implementations") matching an objective c selector. | |
b81654f1 | 1091 | * |
d2e6263c MS |
1092 | * Note that it is possible for a normal (c-style) function to have |
1093 | * the same name as an objective c selector. To prevent the selector | |
1094 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1095 | * search for such a function first, and if it finds one, pass it in | |
1096 | * to us. We will then integrate it into the list. We also search | |
1097 | * for one here, among the minsyms. | |
b81654f1 | 1098 | * |
d2e6263c MS |
1099 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
1100 | * into two parts: debuggable (struct symbol) syms, and | |
1101 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1102 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1103 | * be the index of the first non-debuggable one). | |
b81654f1 MS |
1104 | */ |
1105 | ||
1106 | /* | |
1107 | * Function: total_number_of_imps (char *selector); | |
1108 | * | |
1109 | * Input: a string representing a selector | |
1110 | * Output: number of methods that implement that selector. | |
1111 | * | |
d2e6263c | 1112 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 1113 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
1114 | * matching the input, and to allocate an array of pointers to them |
1115 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
1116 | */ |
1117 | ||
1118 | char * | |
1119 | parse_selector (char *method, char **selector) | |
1120 | { | |
1121 | char *s1 = NULL; | |
1122 | char *s2 = NULL; | |
1123 | int found_quote = 0; | |
1124 | ||
1125 | char *nselector = NULL; | |
1126 | ||
1127 | CHECK (selector != NULL); | |
1128 | ||
1129 | s1 = method; | |
1130 | ||
1131 | while (isspace (*s1)) | |
1132 | s1++; | |
1133 | if (*s1 == '\'') | |
1134 | { | |
1135 | found_quote = 1; | |
1136 | s1++; | |
1137 | } | |
1138 | while (isspace (*s1)) | |
1139 | s1++; | |
1140 | ||
1141 | nselector = s1; | |
1142 | s2 = s1; | |
1143 | ||
1144 | for (;;) { | |
1145 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1146 | *s1++ = *s2; | |
1147 | else if (isspace (*s2)) | |
1148 | ; | |
1149 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1150 | break; | |
1151 | else | |
1152 | return NULL; | |
1153 | s2++; | |
1154 | } | |
1155 | *s1++ = '\0'; | |
1156 | ||
1157 | while (isspace (*s2)) | |
1158 | s2++; | |
1159 | if (found_quote) | |
1160 | { | |
1161 | if (*s2 == '\'') | |
1162 | s2++; | |
1163 | while (isspace (*s2)) | |
1164 | s2++; | |
1165 | } | |
1166 | ||
1167 | if (selector != NULL) | |
1168 | *selector = nselector; | |
1169 | ||
1170 | return s2; | |
1171 | } | |
1172 | ||
1173 | char * | |
d2e6263c MS |
1174 | parse_method (char *method, char *type, char **class, |
1175 | char **category, char **selector) | |
b81654f1 MS |
1176 | { |
1177 | char *s1 = NULL; | |
1178 | char *s2 = NULL; | |
1179 | int found_quote = 0; | |
1180 | ||
1181 | char ntype = '\0'; | |
1182 | char *nclass = NULL; | |
1183 | char *ncategory = NULL; | |
1184 | char *nselector = NULL; | |
1185 | ||
1186 | CHECK (type != NULL); | |
1187 | CHECK (class != NULL); | |
1188 | CHECK (category != NULL); | |
1189 | CHECK (selector != NULL); | |
1190 | ||
1191 | s1 = method; | |
1192 | ||
1193 | while (isspace (*s1)) | |
1194 | s1++; | |
1195 | if (*s1 == '\'') | |
1196 | { | |
1197 | found_quote = 1; | |
1198 | s1++; | |
1199 | } | |
1200 | while (isspace (*s1)) | |
1201 | s1++; | |
1202 | ||
1203 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1204 | ntype = *s1++; | |
1205 | ||
1206 | while (isspace (*s1)) | |
1207 | s1++; | |
1208 | ||
1209 | if (*s1 != '[') | |
1210 | return NULL; | |
1211 | s1++; | |
1212 | ||
1213 | nclass = s1; | |
1214 | while (isalnum (*s1) || (*s1 == '_')) | |
1215 | s1++; | |
1216 | ||
1217 | s2 = s1; | |
1218 | while (isspace (*s2)) | |
1219 | s2++; | |
1220 | ||
1221 | if (*s2 == '(') | |
1222 | { | |
1223 | s2++; | |
1224 | while (isspace (*s2)) | |
1225 | s2++; | |
1226 | ncategory = s2; | |
1227 | while (isalnum (*s2) || (*s2 == '_')) | |
1228 | s2++; | |
1229 | *s2++ = '\0'; | |
1230 | } | |
1231 | ||
d2e6263c | 1232 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1233 | *s1++ = '\0'; |
1234 | ||
1235 | nselector = s2; | |
1236 | s1 = s2; | |
1237 | ||
1238 | for (;;) { | |
1239 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1240 | *s1++ = *s2; | |
1241 | else if (isspace (*s2)) | |
1242 | ; | |
1243 | else if (*s2 == ']') | |
1244 | break; | |
1245 | else | |
1246 | return NULL; | |
1247 | s2++; | |
1248 | } | |
1249 | *s1++ = '\0'; | |
1250 | s2++; | |
1251 | ||
1252 | while (isspace (*s2)) | |
1253 | s2++; | |
1254 | if (found_quote) | |
1255 | { | |
1256 | if (*s2 != '\'') | |
1257 | return NULL; | |
1258 | s2++; | |
1259 | while (isspace (*s2)) | |
1260 | s2++; | |
1261 | } | |
1262 | ||
1263 | if (type != NULL) | |
1264 | *type = ntype; | |
1265 | if (class != NULL) | |
1266 | *class = nclass; | |
1267 | if (category != NULL) | |
1268 | *category = ncategory; | |
1269 | if (selector != NULL) | |
1270 | *selector = nselector; | |
1271 | ||
1272 | return s2; | |
1273 | } | |
1274 | ||
1275 | void | |
d2e6263c MS |
1276 | find_methods (struct symtab *symtab, char type, |
1277 | const char *class, const char *category, | |
1278 | const char *selector, struct symbol **syms, | |
1279 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1280 | { |
1281 | struct objfile *objfile = NULL; | |
1282 | struct minimal_symbol *msymbol = NULL; | |
1283 | struct block *block = NULL; | |
1284 | struct symbol *sym = NULL; | |
1285 | ||
1286 | char *symname = NULL; | |
1287 | ||
1288 | char ntype = '\0'; | |
1289 | char *nclass = NULL; | |
1290 | char *ncategory = NULL; | |
1291 | char *nselector = NULL; | |
1292 | ||
1293 | unsigned int csym = 0; | |
1294 | unsigned int cdebug = 0; | |
1295 | ||
1296 | static char *tmp = NULL; | |
1297 | static unsigned int tmplen = 0; | |
1298 | ||
1299 | CHECK (nsym != NULL); | |
1300 | CHECK (ndebug != NULL); | |
1301 | ||
1302 | if (symtab) | |
1303 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1304 | ||
1305 | ALL_MSYMBOLS (objfile, msymbol) | |
1306 | { | |
1307 | QUIT; | |
1308 | ||
1309 | if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text)) | |
d2e6263c | 1310 | /* Not a function or method. */ |
b81654f1 MS |
1311 | continue; |
1312 | ||
1313 | if (symtab) | |
8da065d5 DC |
1314 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) || |
1315 | (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block))) | |
d2e6263c | 1316 | /* Not in the specified symtab. */ |
b81654f1 MS |
1317 | continue; |
1318 | ||
1319 | symname = SYMBOL_DEMANGLED_NAME (msymbol); | |
1320 | if (symname == NULL) | |
1321 | symname = SYMBOL_NAME (msymbol); | |
1322 | if (symname == NULL) | |
1323 | continue; | |
1324 | ||
1325 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
d2e6263c | 1326 | /* Not a method name. */ |
b81654f1 MS |
1327 | continue; |
1328 | ||
1329 | while ((strlen (symname) + 1) >= tmplen) | |
1330 | { | |
1331 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1332 | tmp = xrealloc (tmp, tmplen); | |
1333 | } | |
1334 | strcpy (tmp, symname); | |
1335 | ||
1336 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1337 | continue; | |
1338 | ||
1339 | if ((type != '\0') && (ntype != type)) | |
1340 | continue; | |
1341 | ||
d2e6263c MS |
1342 | if ((class != NULL) |
1343 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
b81654f1 MS |
1344 | continue; |
1345 | ||
d2e6263c MS |
1346 | if ((category != NULL) && |
1347 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
b81654f1 MS |
1348 | continue; |
1349 | ||
d2e6263c MS |
1350 | if ((selector != NULL) && |
1351 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
b81654f1 MS |
1352 | continue; |
1353 | ||
1354 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1355 | if (sym != NULL) | |
1356 | { | |
36e53c63 | 1357 | const char *newsymname = SYMBOL_DEMANGLED_NAME (sym); |
b81654f1 MS |
1358 | |
1359 | if (newsymname == NULL) | |
1360 | newsymname = SYMBOL_NAME (sym); | |
1361 | if (strcmp (symname, newsymname) == 0) | |
1362 | { | |
d2e6263c MS |
1363 | /* Found a high-level method sym: swap it into the |
1364 | lower part of sym_arr (below num_debuggable). */ | |
b81654f1 MS |
1365 | if (syms != NULL) |
1366 | { | |
1367 | syms[csym] = syms[cdebug]; | |
1368 | syms[cdebug] = sym; | |
1369 | } | |
1370 | csym++; | |
1371 | cdebug++; | |
1372 | } | |
1373 | else | |
1374 | { | |
d2e6263c MS |
1375 | warning ( |
1376 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
b81654f1 MS |
1377 | newsymname, symname); |
1378 | if (syms != NULL) | |
1379 | syms[csym] = (struct symbol *) msymbol; | |
1380 | csym++; | |
1381 | } | |
1382 | } | |
1383 | else | |
1384 | { | |
d2e6263c | 1385 | /* Found a non-debuggable method symbol. */ |
b81654f1 MS |
1386 | if (syms != NULL) |
1387 | syms[csym] = (struct symbol *) msymbol; | |
1388 | csym++; | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | if (nsym != NULL) | |
1393 | *nsym = csym; | |
1394 | if (ndebug != NULL) | |
1395 | *ndebug = cdebug; | |
1396 | } | |
1397 | ||
1398 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1399 | char *method, struct symbol **syms, |
1400 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1401 | { |
1402 | char type = '\0'; | |
1403 | char *class = NULL; | |
1404 | char *category = NULL; | |
1405 | char *selector = NULL; | |
1406 | ||
1407 | unsigned int csym = 0; | |
1408 | unsigned int cdebug = 0; | |
1409 | ||
1410 | unsigned int ncsym = 0; | |
1411 | unsigned int ncdebug = 0; | |
1412 | ||
1413 | char *buf = NULL; | |
1414 | char *tmp = NULL; | |
1415 | ||
1416 | CHECK (nsym != NULL); | |
1417 | CHECK (ndebug != NULL); | |
1418 | ||
1419 | if (nsym != NULL) | |
1420 | *nsym = 0; | |
1421 | if (ndebug != NULL) | |
1422 | *ndebug = 0; | |
1423 | ||
1424 | buf = (char *) alloca (strlen (method) + 1); | |
1425 | strcpy (buf, method); | |
1426 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1427 | ||
1428 | if (tmp == NULL) { | |
1429 | ||
1430 | struct symtab *sym_symtab = NULL; | |
1431 | struct symbol *sym = NULL; | |
1432 | struct minimal_symbol *msym = NULL; | |
1433 | ||
1434 | strcpy (buf, method); | |
1435 | tmp = parse_selector (buf, &selector); | |
1436 | ||
1437 | if (tmp == NULL) | |
1438 | return NULL; | |
1439 | ||
1440 | sym = lookup_symbol (selector, block, VAR_NAMESPACE, 0, &sym_symtab); | |
1441 | if (sym != NULL) | |
1442 | { | |
1443 | if (syms) | |
1444 | syms[csym] = sym; | |
1445 | csym++; | |
1446 | cdebug++; | |
1447 | } | |
1448 | ||
1449 | if (sym == NULL) | |
1450 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1451 | ||
1452 | if (msym != NULL) | |
1453 | { | |
1454 | if (syms) | |
36e53c63 | 1455 | syms[csym] = (struct symbol *)msym; |
b81654f1 MS |
1456 | csym++; |
1457 | } | |
1458 | } | |
1459 | ||
1460 | if (syms != NULL) | |
d2e6263c MS |
1461 | find_methods (symtab, type, class, category, selector, |
1462 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1463 | else |
d2e6263c MS |
1464 | find_methods (symtab, type, class, category, selector, |
1465 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1466 | |
d2e6263c | 1467 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1468 | if (ncsym == 0 && ncdebug == 0) |
1469 | return method; | |
1470 | ||
1471 | /* Take debug symbols from the second batch of symbols and swap them | |
1472 | * with debug symbols from the first batch. Repeat until either the | |
1473 | * second section is out of debug symbols or the first section is | |
1474 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1475 | * packed to the beginning of the buffer. |
1476 | */ | |
b81654f1 MS |
1477 | |
1478 | if (syms != NULL) | |
1479 | { | |
1480 | while ((cdebug < csym) && (ncdebug > 0)) | |
1481 | { | |
1482 | struct symbol *s = NULL; | |
d2e6263c MS |
1483 | /* First non-debugging symbol. */ |
1484 | unsigned int i = cdebug; | |
1485 | /* Last of second batch of debug symbols. */ | |
1486 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1487 | |
1488 | s = syms[j]; | |
1489 | syms[j] = syms[i]; | |
1490 | syms[i] = s; | |
1491 | ||
d2e6263c MS |
1492 | /* We've moved a symbol from the second debug section to the |
1493 | first one. */ | |
b81654f1 MS |
1494 | cdebug++; |
1495 | ncdebug--; | |
1496 | } | |
1497 | } | |
1498 | ||
1499 | csym += ncsym; | |
1500 | cdebug += ncdebug; | |
1501 | ||
1502 | if (nsym != NULL) | |
1503 | *nsym = csym; | |
1504 | if (ndebug != NULL) | |
1505 | *ndebug = cdebug; | |
1506 | ||
1507 | if (syms == NULL) | |
1508 | return method + (tmp - buf); | |
1509 | ||
1510 | if (csym > 1) | |
1511 | { | |
d2e6263c | 1512 | /* Sort debuggable symbols. */ |
b81654f1 | 1513 | if (cdebug > 1) |
d2e6263c MS |
1514 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1515 | compare_classes); | |
b81654f1 | 1516 | |
d2e6263c | 1517 | /* Sort minimal_symbols. */ |
b81654f1 | 1518 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1519 | qsort (&syms[cdebug], csym - cdebug, |
1520 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1521 | } |
d2e6263c MS |
1522 | /* Terminate the sym_arr list. */ |
1523 | syms[csym] = 0; | |
b81654f1 MS |
1524 | |
1525 | return method + (tmp - buf); | |
1526 | } | |
1527 | ||
1528 | void | |
1529 | print_object_command (char *args, int from_tty) | |
1530 | { | |
1531 | struct value *object, *function, *description; | |
36e53c63 | 1532 | CORE_ADDR string_addr, object_addr; |
b81654f1 MS |
1533 | int i = 0; |
1534 | char c = -1; | |
1535 | ||
1536 | if (!args || !*args) | |
d2e6263c MS |
1537 | error ( |
1538 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1539 | |
1540 | { | |
1541 | struct expression *expr = parse_expression (args); | |
d2e6263c MS |
1542 | register struct cleanup *old_chain = |
1543 | make_cleanup (free_current_contents, &expr); | |
b81654f1 MS |
1544 | int pc = 0; |
1545 | ||
b81654f1 MS |
1546 | object = expr->language_defn->evaluate_exp (builtin_type_void_data_ptr, |
1547 | expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1548 | do_cleanups (old_chain); |
1549 | } | |
1550 | ||
36e53c63 AF |
1551 | /* Validate the address for sanity. */ |
1552 | object_addr = value_as_long (object); | |
1553 | read_memory (object_addr, &c, 1); | |
1554 | ||
7248f48e | 1555 | function = find_function_in_inferior ("_NSPrintForDebugger"); |
36e53c63 | 1556 | if (function == NULL) |
b81654f1 MS |
1557 | error ("Unable to locate _NSPrintForDebugger in child process"); |
1558 | ||
1559 | description = call_function_by_hand (function, 1, &object); | |
1560 | ||
7248f48e AF |
1561 | string_addr = value_as_long (description); |
1562 | if (string_addr == 0) | |
b81654f1 MS |
1563 | error ("object returns null description"); |
1564 | ||
1565 | read_memory (string_addr + i++, &c, 1); | |
1566 | if (c != '\0') | |
1567 | do | |
d2e6263c | 1568 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1569 | QUIT; |
1570 | printf_filtered ("%c", c); | |
1571 | read_memory (string_addr + i++, &c, 1); | |
1572 | } while (c != 0); | |
1573 | else | |
1574 | printf_filtered("<object returns empty description>"); | |
1575 | printf_filtered ("\n"); | |
1576 | } | |
1577 | ||
d2e6263c MS |
1578 | /* The data structure 'methcalls' is used to detect method calls (thru |
1579 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1580 | * and ultimately find the method being called. | |
b81654f1 MS |
1581 | */ |
1582 | ||
1583 | struct objc_methcall { | |
1584 | char *name; | |
d2e6263c | 1585 | /* Return instance method to be called. */ |
36e53c63 | 1586 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1587 | /* Start of pc range corresponding to method invocation. */ |
1588 | CORE_ADDR begin; | |
1589 | /* End of pc range corresponding to method invocation. */ | |
1590 | CORE_ADDR end; | |
b81654f1 MS |
1591 | }; |
1592 | ||
d2e6263c MS |
1593 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1594 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1595 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1596 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1597 | |
1598 | static struct objc_methcall methcalls[] = { | |
1599 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1600 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1601 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1602 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1603 | { "_objc_getClass", NULL, 0, 0}, | |
1604 | { "_objc_getMetaClass", NULL, 0, 0} | |
1605 | }; | |
1606 | ||
1607 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1608 | ||
d2e6263c MS |
1609 | /* The following function, "find_objc_msgsend", fills in the data |
1610 | * structure "objc_msgs" by finding the addresses of each of the | |
1611 | * (currently four) functions that it holds (of which objc_msgSend is | |
1612 | * the first). This must be called each time symbols are loaded, in | |
1613 | * case the functions have moved for some reason. | |
b81654f1 MS |
1614 | */ |
1615 | ||
1616 | void | |
1617 | find_objc_msgsend (void) | |
1618 | { | |
1619 | unsigned int i; | |
1620 | for (i = 0; i < nmethcalls; i++) { | |
1621 | ||
1622 | struct minimal_symbol *func; | |
1623 | ||
d2e6263c | 1624 | /* Try both with and without underscore. */ |
b81654f1 MS |
1625 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1626 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1627 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1628 | } | |
1629 | if (func == NULL) { | |
1630 | methcalls[i].begin = 0; | |
1631 | methcalls[i].end = 0; | |
1632 | continue; | |
1633 | } | |
1634 | ||
1635 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1636 | do { | |
1637 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1638 | } while (methcalls[i].begin == methcalls[i].end); | |
1639 | } | |
1640 | } | |
1641 | ||
1642 | /* find_objc_msgcall (replaces pc_off_limits) | |
1643 | * | |
d2e6263c MS |
1644 | * ALL that this function now does is to determine whether the input |
1645 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1646 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1647 | * if so, it returns the address of the method that will be called. | |
1648 | * | |
1649 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1650 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1651 | * returning the address of the shlib function that would be called. |
d2e6263c MS |
1652 | * That functionality has been moved into the SKIP_TRAMPOLINE_CODE and |
1653 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- | |
1654 | * dependent modules. | |
b81654f1 MS |
1655 | */ |
1656 | ||
1657 | struct objc_submethod_helper_data { | |
36e53c63 | 1658 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1659 | CORE_ADDR pc; |
1660 | CORE_ADDR *new_pc; | |
1661 | }; | |
1662 | ||
1663 | int | |
7248f48e | 1664 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1665 | { |
d2e6263c MS |
1666 | struct objc_submethod_helper_data *s = |
1667 | (struct objc_submethod_helper_data *) arg; | |
1668 | ||
1669 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1670 | return 1; |
d2e6263c | 1671 | else |
b81654f1 | 1672 | return 0; |
b81654f1 MS |
1673 | } |
1674 | ||
1675 | int | |
36e53c63 | 1676 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1677 | CORE_ADDR pc, |
1678 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1679 | { |
1680 | struct objc_submethod_helper_data s; | |
1681 | ||
1682 | s.f = f; | |
1683 | s.pc = pc; | |
1684 | s.new_pc = new_pc; | |
1685 | ||
1686 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1687 | (void *) &s, |
d2e6263c MS |
1688 | "Unable to determine target of Objective-C method call (ignoring):\n", |
1689 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1690 | return 1; |
d2e6263c | 1691 | else |
b81654f1 | 1692 | return 0; |
b81654f1 MS |
1693 | } |
1694 | ||
1695 | int | |
1696 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1697 | { | |
1698 | unsigned int i; | |
1699 | ||
1700 | find_objc_msgsend (); | |
1701 | if (new_pc != NULL) { *new_pc = 0; } | |
1702 | ||
d2e6263c MS |
1703 | for (i = 0; i < nmethcalls; i++) |
1704 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1705 | { | |
1706 | if (methcalls[i].stop_at != NULL) | |
1707 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1708 | pc, new_pc); | |
1709 | else | |
1710 | return 0; | |
b81654f1 | 1711 | } |
d2e6263c | 1712 | |
b81654f1 MS |
1713 | return 0; |
1714 | } | |
1715 | ||
1716 | void | |
1717 | _initialize_objc_language (void) | |
1718 | { | |
1719 | add_language (&objc_language_defn); | |
d2e6263c MS |
1720 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1721 | "All Objective-C selectors, or those matching REGEXP."); | |
1722 | add_info ("classes", classes_info, /* INFO CLASSES command. */ | |
1723 | "All Objective-C classes, or those matching REGEXP."); | |
b81654f1 | 1724 | add_com ("print-object", class_vars, print_object_command, |
36e53c63 | 1725 | "Ask an Objective-C object to print itself."); |
b81654f1 MS |
1726 | add_com_alias ("po", "print-object", class_vars, 1); |
1727 | } | |
1728 | ||
1729 | #if defined (__powerpc__) || defined (__ppc__) | |
1730 | static unsigned long FETCH_ARGUMENT (int i) | |
1731 | { | |
1732 | return read_register (3 + i); | |
1733 | } | |
1734 | #elif defined (__i386__) | |
1735 | static unsigned long FETCH_ARGUMENT (int i) | |
1736 | { | |
1737 | CORE_ADDR stack = read_register (SP_REGNUM); | |
1738 | return read_memory_unsigned_integer (stack + (4 * (i + 1)), 4); | |
1739 | } | |
1740 | #elif defined (__sparc__) | |
1741 | static unsigned long FETCH_ARGUMENT (int i) | |
1742 | { | |
1743 | return read_register (O0_REGNUM + i); | |
1744 | } | |
1745 | #elif defined (__hppa__) || defined (__hppa) | |
1746 | static unsigned long FETCH_ARGUMENT (int i) | |
1747 | { | |
1748 | return read_register (R0_REGNUM + 26 - i); | |
1749 | } | |
1750 | #else | |
1751 | #error unknown architecture | |
1752 | #endif | |
1753 | ||
1754 | #if defined (__hppa__) || defined (__hppa) | |
1755 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1756 | { | |
d2e6263c | 1757 | if (pc & 0x2) |
b81654f1 | 1758 | pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, 4); |
d2e6263c | 1759 | |
b81654f1 MS |
1760 | return pc; |
1761 | } | |
1762 | #else | |
1763 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1764 | { | |
1765 | return pc; | |
1766 | } | |
1767 | #endif | |
1768 | ||
1769 | static void | |
1770 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1771 | { | |
d2e6263c | 1772 | method->name = read_memory_unsigned_integer (addr + 0, 4); |
b81654f1 | 1773 | method->types = read_memory_unsigned_integer (addr + 4, 4); |
d2e6263c | 1774 | method->imp = read_memory_unsigned_integer (addr + 8, 4); |
b81654f1 MS |
1775 | } |
1776 | ||
1777 | static | |
1778 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1779 | { | |
1780 | return read_memory_unsigned_integer (addr + 4, 4); | |
1781 | } | |
1782 | ||
1783 | static void | |
1784 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1785 | struct objc_method *method) | |
1786 | { | |
1787 | CHECK_FATAL (num < read_objc_methlist_nmethods (addr)); | |
1788 | read_objc_method (addr + 8 + (12 * num), method); | |
1789 | } | |
1790 | ||
1791 | static void | |
1792 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1793 | { | |
1794 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1795 | } | |
1796 | ||
1797 | static void | |
1798 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1799 | { | |
1800 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1801 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1802 | }; | |
1803 | ||
1804 | static void | |
1805 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1806 | { | |
1807 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1808 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1809 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1810 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1811 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1812 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1813 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1814 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1815 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1816 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1817 | } | |
1818 | ||
1819 | CORE_ADDR | |
1820 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) | |
1821 | { | |
1822 | CORE_ADDR subclass = class; | |
1823 | ||
d2e6263c MS |
1824 | while (subclass != 0) |
1825 | { | |
b81654f1 | 1826 | |
d2e6263c MS |
1827 | struct objc_class class_str; |
1828 | unsigned mlistnum = 0; | |
b81654f1 | 1829 | |
d2e6263c | 1830 | read_objc_class (subclass, &class_str); |
b81654f1 | 1831 | |
d2e6263c MS |
1832 | for (;;) |
1833 | { | |
1834 | CORE_ADDR mlist; | |
1835 | unsigned long nmethods; | |
1836 | unsigned long i; | |
b81654f1 | 1837 | |
d2e6263c MS |
1838 | mlist = read_memory_unsigned_integer (class_str.methods + |
1839 | (4 * mlistnum), 4); | |
1840 | if (mlist == 0) | |
1841 | break; | |
b81654f1 | 1842 | |
d2e6263c | 1843 | nmethods = read_objc_methlist_nmethods (mlist); |
b81654f1 | 1844 | |
d2e6263c MS |
1845 | for (i = 0; i < nmethods; i++) |
1846 | { | |
1847 | struct objc_method meth_str; | |
1848 | read_objc_methlist_method (mlist, i, &meth_str); | |
b81654f1 MS |
1849 | |
1850 | #if 0 | |
d2e6263c MS |
1851 | fprintf (stderr, |
1852 | "checking method 0x%lx against selector 0x%lx\n", | |
1853 | meth_str.name, sel); | |
b81654f1 MS |
1854 | #endif |
1855 | ||
d2e6263c MS |
1856 | if (meth_str.name == sel) |
1857 | return CONVERT_FUNCPTR (meth_str.imp); | |
1858 | } | |
1859 | mlistnum++; | |
b81654f1 | 1860 | } |
d2e6263c | 1861 | subclass = class_str.super_class; |
b81654f1 | 1862 | } |
b81654f1 MS |
1863 | |
1864 | return 0; | |
1865 | } | |
1866 | ||
1867 | CORE_ADDR | |
1868 | find_implementation (CORE_ADDR object, CORE_ADDR sel) | |
1869 | { | |
1870 | struct objc_object ostr; | |
1871 | ||
d2e6263c MS |
1872 | if (object == 0) |
1873 | return 0; | |
b81654f1 | 1874 | read_objc_object (object, &ostr); |
d2e6263c MS |
1875 | if (ostr.isa == 0) |
1876 | return 0; | |
b81654f1 MS |
1877 | |
1878 | return find_implementation_from_class (ostr.isa, sel); | |
1879 | } | |
1880 | ||
1881 | static int | |
1882 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1883 | { | |
1884 | CORE_ADDR object; | |
1885 | CORE_ADDR sel; | |
1886 | CORE_ADDR res; | |
1887 | ||
1888 | object = FETCH_ARGUMENT (0); | |
1889 | sel = FETCH_ARGUMENT (1); | |
1890 | ||
1891 | res = find_implementation (object, sel); | |
d2e6263c MS |
1892 | if (new_pc != 0) |
1893 | *new_pc = res; | |
1894 | if (res == 0) | |
1895 | return 1; | |
b81654f1 MS |
1896 | return 0; |
1897 | } | |
1898 | ||
1899 | static int | |
1900 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1901 | { | |
1902 | CORE_ADDR object; | |
1903 | CORE_ADDR sel; | |
1904 | CORE_ADDR res; | |
1905 | ||
1906 | object = FETCH_ARGUMENT (1); | |
1907 | sel = FETCH_ARGUMENT (2); | |
1908 | ||
1909 | res = find_implementation (object, sel); | |
d2e6263c MS |
1910 | if (new_pc != 0) |
1911 | *new_pc = res; | |
1912 | if (res == 0) | |
1913 | return 1; | |
b81654f1 MS |
1914 | return 0; |
1915 | } | |
1916 | ||
1917 | static int | |
1918 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1919 | { | |
1920 | struct objc_super sstr; | |
1921 | ||
1922 | CORE_ADDR super; | |
1923 | CORE_ADDR sel; | |
1924 | CORE_ADDR res; | |
1925 | ||
1926 | super = FETCH_ARGUMENT (0); | |
1927 | sel = FETCH_ARGUMENT (1); | |
1928 | ||
1929 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1930 | if (sstr.class == 0) |
1931 | return 0; | |
b81654f1 MS |
1932 | |
1933 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1934 | if (new_pc != 0) |
1935 | *new_pc = res; | |
1936 | if (res == 0) | |
1937 | return 1; | |
b81654f1 MS |
1938 | return 0; |
1939 | } | |
1940 | ||
1941 | static int | |
1942 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1943 | { | |
1944 | struct objc_super sstr; | |
1945 | ||
1946 | CORE_ADDR super; | |
1947 | CORE_ADDR sel; | |
1948 | CORE_ADDR res; | |
1949 | ||
1950 | super = FETCH_ARGUMENT (1); | |
1951 | sel = FETCH_ARGUMENT (2); | |
1952 | ||
1953 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1954 | if (sstr.class == 0) |
1955 | return 0; | |
b81654f1 MS |
1956 | |
1957 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1958 | if (new_pc != 0) |
1959 | *new_pc = res; | |
1960 | if (res == 0) | |
1961 | return 1; | |
b81654f1 MS |
1962 | return 0; |
1963 | } |