Commit | Line | Data |
---|---|---|
d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
de5ad195 | 3 | Copyright 2002, 2003 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" |
b81654f1 MS |
45 | |
46 | #include <ctype.h> | |
47 | ||
48 | struct objc_object { | |
49 | CORE_ADDR isa; | |
50 | }; | |
51 | ||
52 | struct objc_class { | |
53 | CORE_ADDR isa; | |
54 | CORE_ADDR super_class; | |
55 | CORE_ADDR name; | |
56 | long version; | |
57 | long info; | |
58 | long instance_size; | |
59 | CORE_ADDR ivars; | |
60 | CORE_ADDR methods; | |
61 | CORE_ADDR cache; | |
62 | CORE_ADDR protocols; | |
63 | }; | |
64 | ||
65 | struct objc_super { | |
66 | CORE_ADDR receiver; | |
67 | CORE_ADDR class; | |
68 | }; | |
69 | ||
70 | struct objc_method { | |
71 | CORE_ADDR name; | |
72 | CORE_ADDR types; | |
73 | CORE_ADDR imp; | |
74 | }; | |
75 | ||
76 | /* Complaints about ObjC classes, selectors, etc. */ | |
77 | ||
b81654f1 MS |
78 | #if (!defined __GNUC__ || __GNUC__ < 2 || __GNUC_MINOR__ < (defined __cplusplus ? 6 : 4)) |
79 | #define __CHECK_FUNCTION ((__const char *) 0) | |
80 | #else | |
81 | #define __CHECK_FUNCTION __PRETTY_FUNCTION__ | |
82 | #endif | |
83 | ||
84 | #define CHECK(expression) \ | |
85 | ((void) ((expression) ? 0 : gdb_check (#expression, __FILE__, __LINE__, \ | |
86 | __CHECK_FUNCTION))) | |
87 | ||
88 | #define CHECK_FATAL(expression) \ | |
89 | ((void) ((expression) ? 0 : gdb_check_fatal (#expression, __FILE__, \ | |
90 | __LINE__, __CHECK_FUNCTION))) | |
91 | ||
d2e6263c MS |
92 | static void |
93 | gdb_check (const char *str, const char *file, | |
94 | unsigned int line, const char *func) | |
b81654f1 MS |
95 | { |
96 | error ("assertion failure on line %u of \"%s\" in function \"%s\": %s\n", | |
97 | line, file, func, str); | |
98 | } | |
99 | ||
d2e6263c MS |
100 | static void |
101 | gdb_check_fatal (const char *str, const char *file, | |
102 | unsigned int line, const char *func) | |
b81654f1 MS |
103 | { |
104 | internal_error (file, line, | |
105 | "assertion failure in function \"%s\": %s\n", func, str); | |
106 | } | |
107 | ||
d2e6263c MS |
108 | /* Lookup a structure type named "struct NAME", visible in lexical |
109 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
110 | suitably defined. */ | |
b81654f1 MS |
111 | |
112 | struct symbol * | |
113 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
114 | { | |
115 | register struct symbol *sym; | |
116 | ||
d2e6263c MS |
117 | sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0, |
118 | (struct symtab **) NULL); | |
b81654f1 MS |
119 | |
120 | if (sym == NULL) | |
121 | { | |
122 | if (noerr) | |
123 | return 0; | |
124 | else | |
125 | error ("No struct type named %s.", name); | |
126 | } | |
127 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
128 | { | |
129 | if (noerr) | |
130 | return 0; | |
131 | else | |
d2e6263c MS |
132 | error ("This context has class, union or enum %s, not a struct.", |
133 | name); | |
b81654f1 MS |
134 | } |
135 | return sym; | |
136 | } | |
137 | ||
138 | CORE_ADDR | |
139 | lookup_objc_class (char *classname) | |
140 | { | |
141 | struct value * function, *classval; | |
142 | ||
143 | if (! target_has_execution) | |
144 | { | |
d2e6263c | 145 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
146 | return 0; |
147 | } | |
148 | ||
149 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
150 | function = find_function_in_inferior("objc_lookUpClass"); | |
151 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) | |
152 | function = find_function_in_inferior("objc_lookup_class"); | |
153 | else | |
154 | { | |
9d1127c5 | 155 | complaint (&symfile_complaints, "no way to lookup Objective-C classes"); |
b81654f1 MS |
156 | return 0; |
157 | } | |
158 | ||
159 | classval = value_string (classname, strlen (classname) + 1); | |
160 | classval = value_coerce_array (classval); | |
161 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
162 | 1, &classval)); | |
163 | } | |
164 | ||
165 | int | |
166 | lookup_child_selector (char *selname) | |
167 | { | |
168 | struct value * function, *selstring; | |
169 | ||
170 | if (! target_has_execution) | |
171 | { | |
d2e6263c | 172 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
173 | return 0; |
174 | } | |
175 | ||
176 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
177 | function = find_function_in_inferior("sel_getUid"); | |
178 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) | |
179 | function = find_function_in_inferior("sel_get_any_uid"); | |
180 | else | |
181 | { | |
9d1127c5 | 182 | complaint (&symfile_complaints, "no way to lookup Objective-C selectors"); |
b81654f1 MS |
183 | return 0; |
184 | } | |
185 | ||
d2e6263c MS |
186 | selstring = value_coerce_array (value_string (selname, |
187 | strlen (selname) + 1)); | |
b81654f1 MS |
188 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
189 | } | |
190 | ||
191 | struct value * | |
192 | value_nsstring (char *ptr, int len) | |
193 | { | |
194 | struct value *stringValue[3]; | |
195 | struct value *function, *nsstringValue; | |
196 | struct symbol *sym; | |
197 | struct type *type; | |
198 | ||
199 | if (!target_has_execution) | |
d2e6263c | 200 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 MS |
201 | |
202 | if (!(sym = lookup_struct_typedef("NSString", 0, 1)) && | |
203 | !(sym = lookup_struct_typedef("NXString", 0, 1))) | |
204 | type = lookup_pointer_type(builtin_type_void); | |
205 | else | |
206 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
207 | ||
208 | stringValue[2] = value_string(ptr, len); | |
209 | stringValue[2] = value_coerce_array(stringValue[2]); | |
d2e6263c | 210 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
211 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
212 | { | |
213 | function = find_function_in_inferior("_NSNewStringFromCString"); | |
214 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
215 | } | |
216 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
217 | { | |
218 | function = find_function_in_inferior("istr"); | |
219 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
220 | } | |
221 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
222 | { | |
223 | function = find_function_in_inferior("+[NSString stringWithCString:]"); | |
224 | stringValue[0] = value_from_longest | |
225 | (builtin_type_long, lookup_objc_class ("NSString")); | |
226 | stringValue[1] = value_from_longest | |
227 | (builtin_type_long, lookup_child_selector ("stringWithCString:")); | |
228 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); | |
229 | } | |
230 | else | |
231 | error ("NSString: internal error -- no way to create new NSString"); | |
232 | ||
233 | VALUE_TYPE(nsstringValue) = type; | |
234 | return nsstringValue; | |
235 | } | |
236 | ||
d2e6263c | 237 | /* Objective-C name demangling. */ |
b81654f1 MS |
238 | |
239 | char * | |
240 | objc_demangle (const char *mangled) | |
241 | { | |
242 | char *demangled, *cp; | |
243 | ||
244 | if (mangled[0] == '_' && | |
245 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
246 | mangled[2] == '_') | |
247 | { | |
248 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
249 | ||
250 | if (mangled[1] == 'i') | |
251 | *cp++ = '-'; /* for instance method */ | |
252 | else | |
253 | *cp++ = '+'; /* for class method */ | |
254 | ||
255 | *cp++ = '['; /* opening left brace */ | |
256 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
257 | ||
258 | while (*cp && *cp == '_') | |
259 | cp++; /* skip any initial underbars in class name */ | |
260 | ||
7248f48e AF |
261 | cp = strchr(cp, '_'); |
262 | if (!cp) /* find first non-initial underbar */ | |
b81654f1 | 263 | { |
7248f48e | 264 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
265 | return NULL; |
266 | } | |
267 | if (cp[1] == '_') { /* easy case: no category name */ | |
268 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
269 | strcpy(cp, mangled + (cp - demangled) + 2); | |
270 | } | |
271 | else { | |
272 | *cp++ = '('; /* less easy case: category name */ | |
7248f48e AF |
273 | cp = strchr(cp, '_'); |
274 | if (!cp) | |
b81654f1 | 275 | { |
7248f48e | 276 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
277 | return NULL; |
278 | } | |
279 | *cp++ = ')'; | |
d2e6263c | 280 | *cp++ = ' '; /* overwriting 1st char of method name... */ |
b81654f1 MS |
281 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
282 | } | |
283 | ||
284 | while (*cp && *cp == '_') | |
285 | cp++; /* skip any initial underbars in method name */ | |
286 | ||
287 | for (; *cp; cp++) | |
288 | if (*cp == '_') | |
289 | *cp = ':'; /* replace remaining '_' with ':' */ | |
290 | ||
291 | *cp++ = ']'; /* closing right brace */ | |
292 | *cp++ = 0; /* string terminator */ | |
293 | return demangled; | |
294 | } | |
295 | else | |
d2e6263c | 296 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
297 | } |
298 | ||
d2e6263c MS |
299 | /* Print the character C on STREAM as part of the contents of a |
300 | literal string whose delimiter is QUOTER. Note that that format | |
301 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
302 | |
303 | static void | |
304 | objc_emit_char (register int c, struct ui_file *stream, int quoter) | |
305 | { | |
306 | ||
d2e6263c | 307 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
308 | |
309 | if (PRINT_LITERAL_FORM (c)) | |
310 | { | |
311 | if (c == '\\' || c == quoter) | |
312 | { | |
313 | fputs_filtered ("\\", stream); | |
314 | } | |
315 | fprintf_filtered (stream, "%c", c); | |
316 | } | |
317 | else | |
318 | { | |
319 | switch (c) | |
320 | { | |
321 | case '\n': | |
322 | fputs_filtered ("\\n", stream); | |
323 | break; | |
324 | case '\b': | |
325 | fputs_filtered ("\\b", stream); | |
326 | break; | |
327 | case '\t': | |
328 | fputs_filtered ("\\t", stream); | |
329 | break; | |
330 | case '\f': | |
331 | fputs_filtered ("\\f", stream); | |
332 | break; | |
333 | case '\r': | |
334 | fputs_filtered ("\\r", stream); | |
335 | break; | |
336 | case '\033': | |
337 | fputs_filtered ("\\e", stream); | |
338 | break; | |
339 | case '\007': | |
340 | fputs_filtered ("\\a", stream); | |
341 | break; | |
342 | default: | |
343 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
344 | break; | |
345 | } | |
346 | } | |
347 | } | |
348 | ||
349 | static void | |
350 | objc_printchar (int c, struct ui_file *stream) | |
351 | { | |
352 | fputs_filtered ("'", stream); | |
353 | objc_emit_char (c, stream, '\''); | |
354 | fputs_filtered ("'", stream); | |
355 | } | |
356 | ||
d2e6263c MS |
357 | /* Print the character string STRING, printing at most LENGTH |
358 | characters. Printing stops early if the number hits print_max; | |
359 | repeat counts are printed as appropriate. Print ellipses at the | |
360 | end if we had to stop before printing LENGTH characters, or if | |
361 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
362 | |
363 | static void | |
d2e6263c | 364 | objc_printstr (struct ui_file *stream, char *string, |
36e53c63 | 365 | unsigned int length, int width, int force_ellipses) |
b81654f1 MS |
366 | { |
367 | register unsigned int i; | |
368 | unsigned int things_printed = 0; | |
369 | int in_quotes = 0; | |
370 | int need_comma = 0; | |
371 | extern int inspect_it; | |
372 | extern int repeat_count_threshold; | |
373 | extern int print_max; | |
374 | ||
375 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
376 | the last byte of it is a null, we don't print that, in |
377 | traditional C style. */ | |
b81654f1 MS |
378 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
379 | length--; | |
380 | ||
381 | if (length == 0) | |
382 | { | |
383 | fputs_filtered ("\"\"", stream); | |
384 | return; | |
385 | } | |
386 | ||
387 | for (i = 0; i < length && things_printed < print_max; ++i) | |
388 | { | |
d2e6263c MS |
389 | /* Position of the character we are examining to see whether it |
390 | is repeated. */ | |
b81654f1 MS |
391 | unsigned int rep1; |
392 | /* Number of repetitions we have detected so far. */ | |
393 | unsigned int reps; | |
394 | ||
395 | QUIT; | |
396 | ||
397 | if (need_comma) | |
398 | { | |
399 | fputs_filtered (", ", stream); | |
400 | need_comma = 0; | |
401 | } | |
402 | ||
403 | rep1 = i + 1; | |
404 | reps = 1; | |
405 | while (rep1 < length && string[rep1] == string[i]) | |
406 | { | |
407 | ++rep1; | |
408 | ++reps; | |
409 | } | |
410 | ||
411 | if (reps > repeat_count_threshold) | |
412 | { | |
413 | if (in_quotes) | |
414 | { | |
415 | if (inspect_it) | |
416 | fputs_filtered ("\\\", ", stream); | |
417 | else | |
418 | fputs_filtered ("\", ", stream); | |
419 | in_quotes = 0; | |
420 | } | |
421 | objc_printchar (string[i], stream); | |
422 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
423 | i = rep1 - 1; | |
424 | things_printed += repeat_count_threshold; | |
425 | need_comma = 1; | |
426 | } | |
427 | else | |
428 | { | |
429 | if (!in_quotes) | |
430 | { | |
431 | if (inspect_it) | |
432 | fputs_filtered ("\\\"", stream); | |
433 | else | |
434 | fputs_filtered ("\"", stream); | |
435 | in_quotes = 1; | |
436 | } | |
437 | objc_emit_char (string[i], stream, '"'); | |
438 | ++things_printed; | |
439 | } | |
440 | } | |
441 | ||
442 | /* Terminate the quotes if necessary. */ | |
443 | if (in_quotes) | |
444 | { | |
445 | if (inspect_it) | |
446 | fputs_filtered ("\\\"", stream); | |
447 | else | |
448 | fputs_filtered ("\"", stream); | |
449 | } | |
450 | ||
451 | if (force_ellipses || i < length) | |
452 | fputs_filtered ("...", stream); | |
453 | } | |
454 | ||
d2e6263c MS |
455 | /* Create a fundamental C type using default reasonable for the |
456 | current target. | |
457 | ||
458 | Some object/debugging file formats (DWARF version 1, COFF, etc) do | |
459 | not define fundamental types such as "int" or "double". Others | |
460 | (stabs or DWARF version 2, etc) do define fundamental types. For | |
461 | the formats which don't provide fundamental types, gdb can create | |
462 | such types using this function. | |
463 | ||
464 | FIXME: Some compilers distinguish explicitly signed integral types | |
465 | (signed short, signed int, signed long) from "regular" integral | |
466 | types (short, int, long) in the debugging information. There is | |
467 | some disagreement as to how useful this feature is. In particular, | |
468 | gcc does not support this. Also, only some debugging formats allow | |
469 | the distinction to be passed on to a debugger. For now, we always | |
470 | just use "short", "int", or "long" as the type name, for both the | |
471 | implicit and explicitly signed types. This also makes life easier | |
472 | for the gdb test suite since we don't have to account for the | |
473 | differences in output depending upon what the compiler and | |
474 | debugging format support. We will probably have to re-examine the | |
475 | issue when gdb starts taking it's fundamental type information | |
476 | directly from the debugging information supplied by the compiler. | |
477 | fnf@cygnus.com */ | |
b81654f1 MS |
478 | |
479 | static struct type * | |
480 | objc_create_fundamental_type (struct objfile *objfile, int typeid) | |
481 | { | |
482 | register struct type *type = NULL; | |
483 | ||
484 | switch (typeid) | |
485 | { | |
486 | default: | |
d2e6263c MS |
487 | /* FIXME: For now, if we are asked to produce a type not in |
488 | this language, create the equivalent of a C integer type | |
489 | with the name "<?type?>". When all the dust settles from | |
490 | the type reconstruction work, this should probably become | |
491 | an error. */ | |
b81654f1 MS |
492 | type = init_type (TYPE_CODE_INT, |
493 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
494 | 0, "<?type?>", objfile); | |
495 | warning ("internal error: no C/C++ fundamental type %d", typeid); | |
496 | break; | |
497 | case FT_VOID: | |
498 | type = init_type (TYPE_CODE_VOID, | |
499 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
500 | 0, "void", objfile); | |
501 | break; | |
502 | case FT_CHAR: | |
503 | type = init_type (TYPE_CODE_INT, | |
504 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
505 | 0, "char", objfile); | |
506 | break; | |
507 | case FT_SIGNED_CHAR: | |
508 | type = init_type (TYPE_CODE_INT, | |
509 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
510 | 0, "signed char", objfile); | |
511 | break; | |
512 | case FT_UNSIGNED_CHAR: | |
513 | type = init_type (TYPE_CODE_INT, | |
514 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
515 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); | |
516 | break; | |
517 | case FT_SHORT: | |
518 | type = init_type (TYPE_CODE_INT, | |
519 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
520 | 0, "short", objfile); | |
521 | break; | |
522 | case FT_SIGNED_SHORT: | |
523 | type = init_type (TYPE_CODE_INT, | |
524 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
525 | 0, "short", objfile); /* FIXME-fnf */ | |
526 | break; | |
527 | case FT_UNSIGNED_SHORT: | |
528 | type = init_type (TYPE_CODE_INT, | |
529 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
530 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); | |
531 | break; | |
532 | case FT_INTEGER: | |
533 | type = init_type (TYPE_CODE_INT, | |
534 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
535 | 0, "int", objfile); | |
536 | break; | |
537 | case FT_SIGNED_INTEGER: | |
538 | type = init_type (TYPE_CODE_INT, | |
539 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
540 | 0, "int", objfile); /* FIXME -fnf */ | |
541 | break; | |
542 | case FT_UNSIGNED_INTEGER: | |
543 | type = init_type (TYPE_CODE_INT, | |
544 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
545 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); | |
546 | break; | |
547 | case FT_LONG: | |
548 | type = init_type (TYPE_CODE_INT, | |
549 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
550 | 0, "long", objfile); | |
551 | break; | |
552 | case FT_SIGNED_LONG: | |
553 | type = init_type (TYPE_CODE_INT, | |
554 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
555 | 0, "long", objfile); /* FIXME -fnf */ | |
556 | break; | |
557 | case FT_UNSIGNED_LONG: | |
558 | type = init_type (TYPE_CODE_INT, | |
559 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
560 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); | |
561 | break; | |
562 | case FT_LONG_LONG: | |
563 | type = init_type (TYPE_CODE_INT, | |
564 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
565 | 0, "long long", objfile); | |
566 | break; | |
567 | case FT_SIGNED_LONG_LONG: | |
568 | type = init_type (TYPE_CODE_INT, | |
569 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
570 | 0, "signed long long", objfile); | |
571 | break; | |
572 | case FT_UNSIGNED_LONG_LONG: | |
573 | type = init_type (TYPE_CODE_INT, | |
574 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
575 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
576 | break; | |
577 | case FT_FLOAT: | |
578 | type = init_type (TYPE_CODE_FLT, | |
579 | TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
580 | 0, "float", objfile); | |
581 | break; | |
582 | case FT_DBL_PREC_FLOAT: | |
583 | type = init_type (TYPE_CODE_FLT, | |
584 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
585 | 0, "double", objfile); | |
586 | break; | |
587 | case FT_EXT_PREC_FLOAT: | |
588 | type = init_type (TYPE_CODE_FLT, | |
589 | TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, | |
590 | 0, "long double", objfile); | |
591 | break; | |
592 | } | |
593 | return (type); | |
594 | } | |
595 | ||
596 | ||
597 | /* Table mapping opcodes into strings for printing operators | |
598 | and precedences of the operators. */ | |
599 | ||
600 | static const struct op_print objc_op_print_tab[] = | |
601 | { | |
602 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
603 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
604 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
605 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
606 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
607 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
608 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
609 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
610 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
611 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
612 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
613 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
614 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
615 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
616 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
617 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
618 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
619 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
620 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
621 | {"%", BINOP_REM, PREC_MUL, 0}, | |
622 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
623 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
624 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
625 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
626 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
627 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
628 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
629 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
630 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
631 | {NULL, 0, 0, 0} | |
632 | }; | |
633 | ||
634 | struct type ** const (objc_builtin_types[]) = | |
635 | { | |
636 | &builtin_type_int, | |
637 | &builtin_type_long, | |
638 | &builtin_type_short, | |
639 | &builtin_type_char, | |
640 | &builtin_type_float, | |
641 | &builtin_type_double, | |
642 | &builtin_type_void, | |
643 | &builtin_type_long_long, | |
644 | &builtin_type_signed_char, | |
645 | &builtin_type_unsigned_char, | |
646 | &builtin_type_unsigned_short, | |
647 | &builtin_type_unsigned_int, | |
648 | &builtin_type_unsigned_long, | |
649 | &builtin_type_unsigned_long_long, | |
650 | &builtin_type_long_double, | |
651 | &builtin_type_complex, | |
652 | &builtin_type_double_complex, | |
653 | 0 | |
654 | }; | |
655 | ||
656 | const struct language_defn objc_language_defn = { | |
d2e6263c | 657 | "objective-c", /* Language name */ |
b81654f1 MS |
658 | language_objc, |
659 | objc_builtin_types, | |
660 | range_check_off, | |
661 | type_check_off, | |
662 | case_sensitive_on, | |
663 | objc_parse, | |
664 | objc_error, | |
665 | evaluate_subexp_standard, | |
666 | objc_printchar, /* Print a character constant */ | |
667 | objc_printstr, /* Function to print string constant */ | |
668 | objc_emit_char, | |
669 | objc_create_fundamental_type, /* Create fundamental type in this language */ | |
670 | c_print_type, /* Print a type using appropriate syntax */ | |
671 | c_val_print, /* Print a value using appropriate syntax */ | |
672 | c_value_print, /* Print a top-level value */ | |
673 | {"", "", "", ""}, /* Binary format info */ | |
674 | {"0%lo", "0", "o", ""}, /* Octal format info */ | |
675 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
676 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
d2e6263c MS |
677 | objc_op_print_tab, /* Expression operators for printing */ |
678 | 1, /* C-style arrays */ | |
b81654f1 MS |
679 | 0, /* String lower bound */ |
680 | &builtin_type_char, /* Type of string elements */ | |
681 | LANG_MAGIC | |
682 | }; | |
683 | ||
684 | /* | |
685 | * ObjC: | |
d2e6263c | 686 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
687 | */ |
688 | ||
d2e6263c | 689 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
690 | { |
691 | struct selname *next; | |
692 | char *msglist_sel; | |
693 | int msglist_len; | |
694 | }; | |
695 | ||
696 | static int msglist_len; | |
697 | static struct selname *selname_chain; | |
698 | static char *msglist_sel; | |
699 | ||
700 | void | |
701 | start_msglist(void) | |
702 | { | |
703 | register struct selname *new = | |
704 | (struct selname *) xmalloc (sizeof (struct selname)); | |
705 | ||
706 | new->next = selname_chain; | |
707 | new->msglist_len = msglist_len; | |
708 | new->msglist_sel = msglist_sel; | |
709 | msglist_len = 0; | |
710 | msglist_sel = (char *)xmalloc(1); | |
711 | *msglist_sel = 0; | |
712 | selname_chain = new; | |
713 | } | |
714 | ||
715 | void | |
716 | add_msglist(struct stoken *str, int addcolon) | |
717 | { | |
718 | char *s, *p; | |
719 | int len, plen; | |
720 | ||
d2e6263c MS |
721 | if (str == 0) { /* Unnamed arg, or... */ |
722 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
723 | msglist_len++; |
724 | return; | |
725 | } | |
726 | p = ""; | |
727 | plen = 0; | |
728 | } else { | |
729 | p = str->ptr; | |
730 | plen = str->length; | |
731 | } | |
732 | len = plen + strlen(msglist_sel) + 2; | |
733 | s = (char *)xmalloc(len); | |
734 | strcpy(s, msglist_sel); | |
735 | strncat(s, p, plen); | |
7248f48e | 736 | xfree(msglist_sel); |
b81654f1 MS |
737 | msglist_sel = s; |
738 | if (addcolon) { | |
739 | s[len-2] = ':'; | |
740 | s[len-1] = 0; | |
741 | msglist_len++; | |
742 | } else | |
743 | s[len-2] = '\0'; | |
744 | } | |
745 | ||
746 | int | |
747 | end_msglist(void) | |
748 | { | |
749 | register int val = msglist_len; | |
750 | register struct selname *sel = selname_chain; | |
751 | register char *p = msglist_sel; | |
752 | int selid; | |
753 | ||
754 | selname_chain = sel->next; | |
755 | msglist_len = sel->msglist_len; | |
756 | msglist_sel = sel->msglist_sel; | |
757 | selid = lookup_child_selector(p); | |
758 | if (!selid) | |
759 | error("Can't find selector \"%s\"", p); | |
760 | write_exp_elt_longcst (selid); | |
7248f48e | 761 | xfree(p); |
d2e6263c | 762 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 763 | xfree(sel); |
b81654f1 MS |
764 | |
765 | return val; | |
766 | } | |
767 | ||
768 | /* | |
769 | * Function: specialcmp (char *a, char *b) | |
770 | * | |
771 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 772 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
773 | */ |
774 | ||
775 | int specialcmp(char *a, char *b) | |
776 | { | |
777 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
778 | { | |
779 | if (*a != *b) | |
780 | return *a - *b; | |
781 | a++, b++; | |
782 | } | |
783 | if (*a && *a != ' ' && *a != ']') | |
784 | return 1; /* a is longer therefore greater */ | |
785 | if (*b && *b != ' ' && *b != ']') | |
786 | return -1; /* a is shorter therefore lesser */ | |
787 | return 0; /* a and b are identical */ | |
788 | } | |
789 | ||
790 | /* | |
36e53c63 | 791 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 792 | * |
d2e6263c MS |
793 | * Comparison function for use with qsort. Arguments are symbols or |
794 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
795 | */ |
796 | ||
797 | static int | |
36e53c63 | 798 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
799 | { |
800 | char *aname, *bname; | |
801 | ||
de5ad195 DC |
802 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
803 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 804 | if (aname == NULL || bname == NULL) |
b81654f1 MS |
805 | error ("internal: compare_selectors(1)"); |
806 | ||
7248f48e AF |
807 | aname = strchr(aname, ' '); |
808 | bname = strchr(bname, ' '); | |
809 | if (aname == NULL || bname == NULL) | |
b81654f1 MS |
810 | error ("internal: compare_selectors(2)"); |
811 | ||
812 | return specialcmp (aname+1, bname+1); | |
813 | } | |
814 | ||
815 | /* | |
816 | * Function: selectors_info (regexp, from_tty) | |
817 | * | |
d2e6263c MS |
818 | * Implements the "Info selectors" command. Takes an optional regexp |
819 | * arg. Lists all objective c selectors that match the regexp. Works | |
820 | * by grepping thru all symbols for objective c methods. Output list | |
821 | * is sorted and uniqued. | |
b81654f1 MS |
822 | */ |
823 | ||
824 | static void | |
825 | selectors_info (char *regexp, int from_tty) | |
826 | { | |
827 | struct objfile *objfile; | |
828 | struct minimal_symbol *msymbol; | |
829 | char *name; | |
830 | char *val; | |
831 | int matches = 0; | |
832 | int maxlen = 0; | |
833 | int ix; | |
834 | char myregexp[2048]; | |
835 | char asel[256]; | |
836 | struct symbol **sym_arr; | |
837 | int plusminus = 0; | |
838 | ||
839 | if (regexp == NULL) | |
d2e6263c | 840 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
841 | else |
842 | { | |
d2e6263c MS |
843 | if (*regexp == '+' || *regexp == '-') |
844 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
845 | plusminus = *regexp++; |
846 | while (*regexp == ' ' || *regexp == '\t') | |
847 | regexp++; | |
848 | } | |
849 | if (*regexp == '\0') | |
850 | strcpy(myregexp, ".*]"); | |
851 | else | |
852 | { | |
853 | strcpy(myregexp, regexp); | |
854 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
855 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
856 | else | |
857 | strcat(myregexp, ".*]"); | |
858 | } | |
859 | } | |
860 | ||
861 | if (regexp != NULL) | |
862 | if (0 != (val = re_comp (myregexp))) | |
863 | error ("Invalid regexp (%s): %s", val, regexp); | |
864 | ||
d2e6263c | 865 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
866 | ALL_MSYMBOLS (objfile, msymbol) |
867 | { | |
868 | QUIT; | |
7248f48e AF |
869 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
870 | if (name == NULL) | |
22abf04a | 871 | name = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
872 | if (name && |
873 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 874 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 875 | { |
d2e6263c | 876 | /* Filter for class/instance methods. */ |
b81654f1 | 877 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
878 | continue; |
879 | /* Find selector part. */ | |
880 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
881 | if (regexp == NULL || re_exec(++name) != 0) |
882 | { | |
883 | char *mystart = name; | |
884 | char *myend = (char *) strchr(mystart, ']'); | |
885 | ||
886 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 887 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
888 | matches++; |
889 | } | |
890 | } | |
891 | } | |
892 | if (matches) | |
893 | { | |
894 | printf_filtered ("Selectors matching \"%s\":\n\n", | |
895 | regexp ? regexp : "*"); | |
896 | ||
897 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
898 | matches = 0; | |
899 | ALL_MSYMBOLS (objfile, msymbol) | |
900 | { | |
901 | QUIT; | |
7248f48e AF |
902 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
903 | if (name == NULL) | |
22abf04a | 904 | name = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
905 | if (name && |
906 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 907 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 908 | { |
d2e6263c | 909 | /* Filter for class/instance methods. */ |
b81654f1 | 910 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
911 | continue; |
912 | /* Find selector part. */ | |
913 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
914 | if (regexp == NULL || re_exec(++name) != 0) |
915 | sym_arr[matches++] = (struct symbol *) msymbol; | |
916 | } | |
917 | } | |
918 | ||
919 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
920 | compare_selectors); | |
d2e6263c MS |
921 | /* Prevent compare on first iteration. */ |
922 | asel[0] = 0; | |
923 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
924 | { |
925 | char *p = asel; | |
926 | ||
927 | QUIT; | |
7248f48e AF |
928 | name = SYMBOL_DEMANGLED_NAME (sym_arr[ix]); |
929 | if (name == NULL) | |
22abf04a | 930 | name = DEPRECATED_SYMBOL_NAME (sym_arr[ix]); |
b81654f1 MS |
931 | name = strchr (name, ' ') + 1; |
932 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 933 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 934 | |
d2e6263c MS |
935 | /* Copy selector part. */ |
936 | while (*name && *name != ']') | |
b81654f1 MS |
937 | *p++ = *name++; |
938 | *p++ = '\0'; | |
d2e6263c MS |
939 | /* Print in columns. */ |
940 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
941 | } |
942 | begin_line(); | |
943 | } | |
944 | else | |
945 | printf_filtered ("No selectors matching \"%s\"\n", regexp ? regexp : "*"); | |
946 | } | |
947 | ||
948 | /* | |
36e53c63 | 949 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 950 | * |
d2e6263c MS |
951 | * Comparison function for use with qsort. Arguments are symbols or |
952 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
953 | */ |
954 | ||
955 | static int | |
36e53c63 | 956 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
957 | { |
958 | char *aname, *bname; | |
959 | ||
de5ad195 DC |
960 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
961 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 962 | if (aname == NULL || bname == NULL) |
b81654f1 MS |
963 | error ("internal: compare_classes(1)"); |
964 | ||
965 | return specialcmp (aname+1, bname+1); | |
966 | } | |
967 | ||
968 | /* | |
969 | * Function: classes_info(regexp, from_tty) | |
970 | * | |
971 | * Implements the "info classes" command for objective c classes. | |
972 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
973 | * Works by grepping thru the list of objective c methods. List will |
974 | * be sorted and uniqued (since one class may have many methods). | |
975 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
976 | */ |
977 | ||
978 | static void | |
979 | classes_info (char *regexp, int from_tty) | |
980 | { | |
981 | struct objfile *objfile; | |
982 | struct minimal_symbol *msymbol; | |
983 | char *name; | |
984 | char *val; | |
985 | int matches = 0; | |
986 | int maxlen = 0; | |
987 | int ix; | |
988 | char myregexp[2048]; | |
989 | char aclass[256]; | |
990 | struct symbol **sym_arr; | |
991 | ||
992 | if (regexp == NULL) | |
d2e6263c | 993 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
994 | else |
995 | { | |
996 | strcpy(myregexp, regexp); | |
997 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 998 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
999 | myregexp[strlen(myregexp) - 1] = ' '; |
1000 | else | |
1001 | strcat(myregexp, ".* "); | |
1002 | } | |
1003 | ||
1004 | if (regexp != NULL) | |
1005 | if (0 != (val = re_comp (myregexp))) | |
1006 | error ("Invalid regexp (%s): %s", val, regexp); | |
1007 | ||
d2e6263c | 1008 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
1009 | ALL_MSYMBOLS (objfile, msymbol) |
1010 | { | |
1011 | QUIT; | |
7248f48e AF |
1012 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
1013 | if (name == NULL) | |
22abf04a | 1014 | name = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
1015 | if (name && |
1016 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1017 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1018 | if (regexp == NULL || re_exec(name+2) != 0) |
1019 | { | |
d2e6263c MS |
1020 | /* Compute length of classname part. */ |
1021 | char *mystart = name + 2; | |
b81654f1 MS |
1022 | char *myend = (char *) strchr(mystart, ' '); |
1023 | ||
1024 | if (myend && (myend - mystart > maxlen)) | |
1025 | maxlen = myend - mystart; | |
1026 | matches++; | |
1027 | } | |
1028 | } | |
1029 | if (matches) | |
1030 | { | |
1031 | printf_filtered ("Classes matching \"%s\":\n\n", | |
1032 | regexp ? regexp : "*"); | |
1033 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
1034 | matches = 0; | |
1035 | ALL_MSYMBOLS (objfile, msymbol) | |
1036 | { | |
1037 | QUIT; | |
7248f48e AF |
1038 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
1039 | if (name == NULL) | |
22abf04a | 1040 | name = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
1041 | if (name && |
1042 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1043 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1044 | if (regexp == NULL || re_exec(name+2) != 0) |
1045 | sym_arr[matches++] = (struct symbol *) msymbol; | |
1046 | } | |
1047 | ||
1048 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
1049 | compare_classes); | |
d2e6263c MS |
1050 | /* Prevent compare on first iteration. */ |
1051 | aclass[0] = 0; | |
1052 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
1053 | { |
1054 | char *p = aclass; | |
1055 | ||
1056 | QUIT; | |
7248f48e AF |
1057 | name = SYMBOL_DEMANGLED_NAME (sym_arr[ix]); |
1058 | if (name == NULL) | |
22abf04a | 1059 | name = DEPRECATED_SYMBOL_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 | ||
1128 | CHECK (selector != NULL); | |
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 | ||
1187 | CHECK (type != NULL); | |
1188 | CHECK (class != NULL); | |
1189 | CHECK (category != NULL); | |
1190 | CHECK (selector != NULL); | |
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 | ||
1300 | CHECK (nsym != NULL); | |
1301 | CHECK (ndebug != NULL); | |
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 | ||
1320 | symname = SYMBOL_DEMANGLED_NAME (msymbol); | |
1321 | if (symname == NULL) | |
22abf04a | 1322 | symname = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
1323 | if (symname == NULL) |
1324 | continue; | |
1325 | ||
1326 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
d2e6263c | 1327 | /* Not a method name. */ |
b81654f1 MS |
1328 | continue; |
1329 | ||
1330 | while ((strlen (symname) + 1) >= tmplen) | |
1331 | { | |
1332 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1333 | tmp = xrealloc (tmp, tmplen); | |
1334 | } | |
1335 | strcpy (tmp, symname); | |
1336 | ||
1337 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1338 | continue; | |
1339 | ||
1340 | if ((type != '\0') && (ntype != type)) | |
1341 | continue; | |
1342 | ||
d2e6263c MS |
1343 | if ((class != NULL) |
1344 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
b81654f1 MS |
1345 | continue; |
1346 | ||
d2e6263c MS |
1347 | if ((category != NULL) && |
1348 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
b81654f1 MS |
1349 | continue; |
1350 | ||
d2e6263c MS |
1351 | if ((selector != NULL) && |
1352 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
b81654f1 MS |
1353 | continue; |
1354 | ||
1355 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1356 | if (sym != NULL) | |
1357 | { | |
36e53c63 | 1358 | const char *newsymname = SYMBOL_DEMANGLED_NAME (sym); |
b81654f1 MS |
1359 | |
1360 | if (newsymname == NULL) | |
22abf04a | 1361 | newsymname = DEPRECATED_SYMBOL_NAME (sym); |
b81654f1 MS |
1362 | if (strcmp (symname, newsymname) == 0) |
1363 | { | |
d2e6263c MS |
1364 | /* Found a high-level method sym: swap it into the |
1365 | lower part of sym_arr (below num_debuggable). */ | |
b81654f1 MS |
1366 | if (syms != NULL) |
1367 | { | |
1368 | syms[csym] = syms[cdebug]; | |
1369 | syms[cdebug] = sym; | |
1370 | } | |
1371 | csym++; | |
1372 | cdebug++; | |
1373 | } | |
1374 | else | |
1375 | { | |
d2e6263c MS |
1376 | warning ( |
1377 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
b81654f1 MS |
1378 | newsymname, symname); |
1379 | if (syms != NULL) | |
1380 | syms[csym] = (struct symbol *) msymbol; | |
1381 | csym++; | |
1382 | } | |
1383 | } | |
1384 | else | |
1385 | { | |
d2e6263c | 1386 | /* Found a non-debuggable method symbol. */ |
b81654f1 MS |
1387 | if (syms != NULL) |
1388 | syms[csym] = (struct symbol *) msymbol; | |
1389 | csym++; | |
1390 | } | |
1391 | } | |
1392 | ||
1393 | if (nsym != NULL) | |
1394 | *nsym = csym; | |
1395 | if (ndebug != NULL) | |
1396 | *ndebug = cdebug; | |
1397 | } | |
1398 | ||
1399 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1400 | char *method, struct symbol **syms, |
1401 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1402 | { |
1403 | char type = '\0'; | |
1404 | char *class = NULL; | |
1405 | char *category = NULL; | |
1406 | char *selector = NULL; | |
1407 | ||
1408 | unsigned int csym = 0; | |
1409 | unsigned int cdebug = 0; | |
1410 | ||
1411 | unsigned int ncsym = 0; | |
1412 | unsigned int ncdebug = 0; | |
1413 | ||
1414 | char *buf = NULL; | |
1415 | char *tmp = NULL; | |
1416 | ||
1417 | CHECK (nsym != NULL); | |
1418 | CHECK (ndebug != NULL); | |
1419 | ||
1420 | if (nsym != NULL) | |
1421 | *nsym = 0; | |
1422 | if (ndebug != NULL) | |
1423 | *ndebug = 0; | |
1424 | ||
1425 | buf = (char *) alloca (strlen (method) + 1); | |
1426 | strcpy (buf, method); | |
1427 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1428 | ||
1429 | if (tmp == NULL) { | |
1430 | ||
1431 | struct symtab *sym_symtab = NULL; | |
1432 | struct symbol *sym = NULL; | |
1433 | struct minimal_symbol *msym = NULL; | |
1434 | ||
1435 | strcpy (buf, method); | |
1436 | tmp = parse_selector (buf, &selector); | |
1437 | ||
1438 | if (tmp == NULL) | |
1439 | return NULL; | |
1440 | ||
1441 | sym = lookup_symbol (selector, block, VAR_NAMESPACE, 0, &sym_symtab); | |
1442 | if (sym != NULL) | |
1443 | { | |
1444 | if (syms) | |
1445 | syms[csym] = sym; | |
1446 | csym++; | |
1447 | cdebug++; | |
1448 | } | |
1449 | ||
1450 | if (sym == NULL) | |
1451 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1452 | ||
1453 | if (msym != NULL) | |
1454 | { | |
1455 | if (syms) | |
36e53c63 | 1456 | syms[csym] = (struct symbol *)msym; |
b81654f1 MS |
1457 | csym++; |
1458 | } | |
1459 | } | |
1460 | ||
1461 | if (syms != NULL) | |
d2e6263c MS |
1462 | find_methods (symtab, type, class, category, selector, |
1463 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1464 | else |
d2e6263c MS |
1465 | find_methods (symtab, type, class, category, selector, |
1466 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1467 | |
d2e6263c | 1468 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1469 | if (ncsym == 0 && ncdebug == 0) |
1470 | return method; | |
1471 | ||
1472 | /* Take debug symbols from the second batch of symbols and swap them | |
1473 | * with debug symbols from the first batch. Repeat until either the | |
1474 | * second section is out of debug symbols or the first section is | |
1475 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1476 | * packed to the beginning of the buffer. |
1477 | */ | |
b81654f1 MS |
1478 | |
1479 | if (syms != NULL) | |
1480 | { | |
1481 | while ((cdebug < csym) && (ncdebug > 0)) | |
1482 | { | |
1483 | struct symbol *s = NULL; | |
d2e6263c MS |
1484 | /* First non-debugging symbol. */ |
1485 | unsigned int i = cdebug; | |
1486 | /* Last of second batch of debug symbols. */ | |
1487 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1488 | |
1489 | s = syms[j]; | |
1490 | syms[j] = syms[i]; | |
1491 | syms[i] = s; | |
1492 | ||
d2e6263c MS |
1493 | /* We've moved a symbol from the second debug section to the |
1494 | first one. */ | |
b81654f1 MS |
1495 | cdebug++; |
1496 | ncdebug--; | |
1497 | } | |
1498 | } | |
1499 | ||
1500 | csym += ncsym; | |
1501 | cdebug += ncdebug; | |
1502 | ||
1503 | if (nsym != NULL) | |
1504 | *nsym = csym; | |
1505 | if (ndebug != NULL) | |
1506 | *ndebug = cdebug; | |
1507 | ||
1508 | if (syms == NULL) | |
1509 | return method + (tmp - buf); | |
1510 | ||
1511 | if (csym > 1) | |
1512 | { | |
d2e6263c | 1513 | /* Sort debuggable symbols. */ |
b81654f1 | 1514 | if (cdebug > 1) |
d2e6263c MS |
1515 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1516 | compare_classes); | |
b81654f1 | 1517 | |
d2e6263c | 1518 | /* Sort minimal_symbols. */ |
b81654f1 | 1519 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1520 | qsort (&syms[cdebug], csym - cdebug, |
1521 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1522 | } |
d2e6263c MS |
1523 | /* Terminate the sym_arr list. */ |
1524 | syms[csym] = 0; | |
b81654f1 MS |
1525 | |
1526 | return method + (tmp - buf); | |
1527 | } | |
1528 | ||
1529 | void | |
1530 | print_object_command (char *args, int from_tty) | |
1531 | { | |
1532 | struct value *object, *function, *description; | |
36e53c63 | 1533 | CORE_ADDR string_addr, object_addr; |
b81654f1 MS |
1534 | int i = 0; |
1535 | char c = -1; | |
1536 | ||
1537 | if (!args || !*args) | |
d2e6263c MS |
1538 | error ( |
1539 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1540 | |
1541 | { | |
1542 | struct expression *expr = parse_expression (args); | |
d2e6263c MS |
1543 | register struct cleanup *old_chain = |
1544 | make_cleanup (free_current_contents, &expr); | |
b81654f1 MS |
1545 | int pc = 0; |
1546 | ||
b81654f1 MS |
1547 | object = expr->language_defn->evaluate_exp (builtin_type_void_data_ptr, |
1548 | expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1549 | do_cleanups (old_chain); |
1550 | } | |
1551 | ||
36e53c63 AF |
1552 | /* Validate the address for sanity. */ |
1553 | object_addr = value_as_long (object); | |
1554 | read_memory (object_addr, &c, 1); | |
1555 | ||
7248f48e | 1556 | function = find_function_in_inferior ("_NSPrintForDebugger"); |
36e53c63 | 1557 | if (function == NULL) |
b81654f1 MS |
1558 | error ("Unable to locate _NSPrintForDebugger in child process"); |
1559 | ||
1560 | description = call_function_by_hand (function, 1, &object); | |
1561 | ||
7248f48e AF |
1562 | string_addr = value_as_long (description); |
1563 | if (string_addr == 0) | |
b81654f1 MS |
1564 | error ("object returns null description"); |
1565 | ||
1566 | read_memory (string_addr + i++, &c, 1); | |
1567 | if (c != '\0') | |
1568 | do | |
d2e6263c | 1569 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1570 | QUIT; |
1571 | printf_filtered ("%c", c); | |
1572 | read_memory (string_addr + i++, &c, 1); | |
1573 | } while (c != 0); | |
1574 | else | |
1575 | printf_filtered("<object returns empty description>"); | |
1576 | printf_filtered ("\n"); | |
1577 | } | |
1578 | ||
d2e6263c MS |
1579 | /* The data structure 'methcalls' is used to detect method calls (thru |
1580 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1581 | * and ultimately find the method being called. | |
b81654f1 MS |
1582 | */ |
1583 | ||
1584 | struct objc_methcall { | |
1585 | char *name; | |
d2e6263c | 1586 | /* Return instance method to be called. */ |
36e53c63 | 1587 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1588 | /* Start of pc range corresponding to method invocation. */ |
1589 | CORE_ADDR begin; | |
1590 | /* End of pc range corresponding to method invocation. */ | |
1591 | CORE_ADDR end; | |
b81654f1 MS |
1592 | }; |
1593 | ||
d2e6263c MS |
1594 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1595 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1596 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1597 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1598 | |
1599 | static struct objc_methcall methcalls[] = { | |
1600 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1601 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1602 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1603 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1604 | { "_objc_getClass", NULL, 0, 0}, | |
1605 | { "_objc_getMetaClass", NULL, 0, 0} | |
1606 | }; | |
1607 | ||
1608 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1609 | ||
d2e6263c MS |
1610 | /* The following function, "find_objc_msgsend", fills in the data |
1611 | * structure "objc_msgs" by finding the addresses of each of the | |
1612 | * (currently four) functions that it holds (of which objc_msgSend is | |
1613 | * the first). This must be called each time symbols are loaded, in | |
1614 | * case the functions have moved for some reason. | |
b81654f1 MS |
1615 | */ |
1616 | ||
1617 | void | |
1618 | find_objc_msgsend (void) | |
1619 | { | |
1620 | unsigned int i; | |
1621 | for (i = 0; i < nmethcalls; i++) { | |
1622 | ||
1623 | struct minimal_symbol *func; | |
1624 | ||
d2e6263c | 1625 | /* Try both with and without underscore. */ |
b81654f1 MS |
1626 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1627 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1628 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1629 | } | |
1630 | if (func == NULL) { | |
1631 | methcalls[i].begin = 0; | |
1632 | methcalls[i].end = 0; | |
1633 | continue; | |
1634 | } | |
1635 | ||
1636 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1637 | do { | |
1638 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1639 | } while (methcalls[i].begin == methcalls[i].end); | |
1640 | } | |
1641 | } | |
1642 | ||
1643 | /* find_objc_msgcall (replaces pc_off_limits) | |
1644 | * | |
d2e6263c MS |
1645 | * ALL that this function now does is to determine whether the input |
1646 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1647 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1648 | * if so, it returns the address of the method that will be called. | |
1649 | * | |
1650 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1651 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1652 | * returning the address of the shlib function that would be called. |
d2e6263c MS |
1653 | * That functionality has been moved into the SKIP_TRAMPOLINE_CODE and |
1654 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- | |
1655 | * dependent modules. | |
b81654f1 MS |
1656 | */ |
1657 | ||
1658 | struct objc_submethod_helper_data { | |
36e53c63 | 1659 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1660 | CORE_ADDR pc; |
1661 | CORE_ADDR *new_pc; | |
1662 | }; | |
1663 | ||
1664 | int | |
7248f48e | 1665 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1666 | { |
d2e6263c MS |
1667 | struct objc_submethod_helper_data *s = |
1668 | (struct objc_submethod_helper_data *) arg; | |
1669 | ||
1670 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1671 | return 1; |
d2e6263c | 1672 | else |
b81654f1 | 1673 | return 0; |
b81654f1 MS |
1674 | } |
1675 | ||
1676 | int | |
36e53c63 | 1677 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1678 | CORE_ADDR pc, |
1679 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1680 | { |
1681 | struct objc_submethod_helper_data s; | |
1682 | ||
1683 | s.f = f; | |
1684 | s.pc = pc; | |
1685 | s.new_pc = new_pc; | |
1686 | ||
1687 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1688 | (void *) &s, |
d2e6263c MS |
1689 | "Unable to determine target of Objective-C method call (ignoring):\n", |
1690 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1691 | return 1; |
d2e6263c | 1692 | else |
b81654f1 | 1693 | return 0; |
b81654f1 MS |
1694 | } |
1695 | ||
1696 | int | |
1697 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1698 | { | |
1699 | unsigned int i; | |
1700 | ||
1701 | find_objc_msgsend (); | |
1702 | if (new_pc != NULL) { *new_pc = 0; } | |
1703 | ||
d2e6263c MS |
1704 | for (i = 0; i < nmethcalls; i++) |
1705 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1706 | { | |
1707 | if (methcalls[i].stop_at != NULL) | |
1708 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1709 | pc, new_pc); | |
1710 | else | |
1711 | return 0; | |
b81654f1 | 1712 | } |
d2e6263c | 1713 | |
b81654f1 MS |
1714 | return 0; |
1715 | } | |
1716 | ||
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 | ||
1730 | #if defined (__powerpc__) || defined (__ppc__) | |
1731 | static unsigned long FETCH_ARGUMENT (int i) | |
1732 | { | |
1733 | return read_register (3 + i); | |
1734 | } | |
1735 | #elif defined (__i386__) | |
1736 | static unsigned long FETCH_ARGUMENT (int i) | |
1737 | { | |
1738 | CORE_ADDR stack = read_register (SP_REGNUM); | |
1739 | return read_memory_unsigned_integer (stack + (4 * (i + 1)), 4); | |
1740 | } | |
1741 | #elif defined (__sparc__) | |
1742 | static unsigned long FETCH_ARGUMENT (int i) | |
1743 | { | |
1744 | return read_register (O0_REGNUM + i); | |
1745 | } | |
1746 | #elif defined (__hppa__) || defined (__hppa) | |
1747 | static unsigned long FETCH_ARGUMENT (int i) | |
1748 | { | |
1749 | return read_register (R0_REGNUM + 26 - i); | |
1750 | } | |
1751 | #else | |
1752 | #error unknown architecture | |
1753 | #endif | |
1754 | ||
1755 | #if defined (__hppa__) || defined (__hppa) | |
1756 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1757 | { | |
d2e6263c | 1758 | if (pc & 0x2) |
b81654f1 | 1759 | pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, 4); |
d2e6263c | 1760 | |
b81654f1 MS |
1761 | return pc; |
1762 | } | |
1763 | #else | |
1764 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1765 | { | |
1766 | return pc; | |
1767 | } | |
1768 | #endif | |
1769 | ||
1770 | static void | |
1771 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1772 | { | |
d2e6263c | 1773 | method->name = read_memory_unsigned_integer (addr + 0, 4); |
b81654f1 | 1774 | method->types = read_memory_unsigned_integer (addr + 4, 4); |
d2e6263c | 1775 | method->imp = read_memory_unsigned_integer (addr + 8, 4); |
b81654f1 MS |
1776 | } |
1777 | ||
1778 | static | |
1779 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1780 | { | |
1781 | return read_memory_unsigned_integer (addr + 4, 4); | |
1782 | } | |
1783 | ||
1784 | static void | |
1785 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1786 | struct objc_method *method) | |
1787 | { | |
1788 | CHECK_FATAL (num < read_objc_methlist_nmethods (addr)); | |
1789 | read_objc_method (addr + 8 + (12 * num), method); | |
1790 | } | |
1791 | ||
1792 | static void | |
1793 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1794 | { | |
1795 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1796 | } | |
1797 | ||
1798 | static void | |
1799 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1800 | { | |
1801 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1802 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1803 | }; | |
1804 | ||
1805 | static void | |
1806 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1807 | { | |
1808 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1809 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1810 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1811 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1812 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1813 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1814 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1815 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1816 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1817 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1818 | } | |
1819 | ||
1820 | CORE_ADDR | |
1821 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) | |
1822 | { | |
1823 | CORE_ADDR subclass = class; | |
1824 | ||
d2e6263c MS |
1825 | while (subclass != 0) |
1826 | { | |
b81654f1 | 1827 | |
d2e6263c MS |
1828 | struct objc_class class_str; |
1829 | unsigned mlistnum = 0; | |
b81654f1 | 1830 | |
d2e6263c | 1831 | read_objc_class (subclass, &class_str); |
b81654f1 | 1832 | |
d2e6263c MS |
1833 | for (;;) |
1834 | { | |
1835 | CORE_ADDR mlist; | |
1836 | unsigned long nmethods; | |
1837 | unsigned long i; | |
b81654f1 | 1838 | |
d2e6263c MS |
1839 | mlist = read_memory_unsigned_integer (class_str.methods + |
1840 | (4 * mlistnum), 4); | |
1841 | if (mlist == 0) | |
1842 | break; | |
b81654f1 | 1843 | |
d2e6263c | 1844 | nmethods = read_objc_methlist_nmethods (mlist); |
b81654f1 | 1845 | |
d2e6263c MS |
1846 | for (i = 0; i < nmethods; i++) |
1847 | { | |
1848 | struct objc_method meth_str; | |
1849 | read_objc_methlist_method (mlist, i, &meth_str); | |
b81654f1 MS |
1850 | |
1851 | #if 0 | |
d2e6263c MS |
1852 | fprintf (stderr, |
1853 | "checking method 0x%lx against selector 0x%lx\n", | |
1854 | meth_str.name, sel); | |
b81654f1 MS |
1855 | #endif |
1856 | ||
d2e6263c MS |
1857 | if (meth_str.name == sel) |
1858 | return CONVERT_FUNCPTR (meth_str.imp); | |
1859 | } | |
1860 | mlistnum++; | |
b81654f1 | 1861 | } |
d2e6263c | 1862 | subclass = class_str.super_class; |
b81654f1 | 1863 | } |
b81654f1 MS |
1864 | |
1865 | return 0; | |
1866 | } | |
1867 | ||
1868 | CORE_ADDR | |
1869 | find_implementation (CORE_ADDR object, CORE_ADDR sel) | |
1870 | { | |
1871 | struct objc_object ostr; | |
1872 | ||
d2e6263c MS |
1873 | if (object == 0) |
1874 | return 0; | |
b81654f1 | 1875 | read_objc_object (object, &ostr); |
d2e6263c MS |
1876 | if (ostr.isa == 0) |
1877 | return 0; | |
b81654f1 MS |
1878 | |
1879 | return find_implementation_from_class (ostr.isa, sel); | |
1880 | } | |
1881 | ||
1882 | static int | |
1883 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1884 | { | |
1885 | CORE_ADDR object; | |
1886 | CORE_ADDR sel; | |
1887 | CORE_ADDR res; | |
1888 | ||
1889 | object = FETCH_ARGUMENT (0); | |
1890 | sel = FETCH_ARGUMENT (1); | |
1891 | ||
1892 | res = find_implementation (object, sel); | |
d2e6263c MS |
1893 | if (new_pc != 0) |
1894 | *new_pc = res; | |
1895 | if (res == 0) | |
1896 | return 1; | |
b81654f1 MS |
1897 | return 0; |
1898 | } | |
1899 | ||
1900 | static int | |
1901 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1902 | { | |
1903 | CORE_ADDR object; | |
1904 | CORE_ADDR sel; | |
1905 | CORE_ADDR res; | |
1906 | ||
1907 | object = FETCH_ARGUMENT (1); | |
1908 | sel = FETCH_ARGUMENT (2); | |
1909 | ||
1910 | res = find_implementation (object, sel); | |
d2e6263c MS |
1911 | if (new_pc != 0) |
1912 | *new_pc = res; | |
1913 | if (res == 0) | |
1914 | return 1; | |
b81654f1 MS |
1915 | return 0; |
1916 | } | |
1917 | ||
1918 | static int | |
1919 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1920 | { | |
1921 | struct objc_super sstr; | |
1922 | ||
1923 | CORE_ADDR super; | |
1924 | CORE_ADDR sel; | |
1925 | CORE_ADDR res; | |
1926 | ||
1927 | super = FETCH_ARGUMENT (0); | |
1928 | sel = FETCH_ARGUMENT (1); | |
1929 | ||
1930 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1931 | if (sstr.class == 0) |
1932 | return 0; | |
b81654f1 MS |
1933 | |
1934 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1935 | if (new_pc != 0) |
1936 | *new_pc = res; | |
1937 | if (res == 0) | |
1938 | return 1; | |
b81654f1 MS |
1939 | return 0; |
1940 | } | |
1941 | ||
1942 | static int | |
1943 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1944 | { | |
1945 | struct objc_super sstr; | |
1946 | ||
1947 | CORE_ADDR super; | |
1948 | CORE_ADDR sel; | |
1949 | CORE_ADDR res; | |
1950 | ||
1951 | super = FETCH_ARGUMENT (1); | |
1952 | sel = FETCH_ARGUMENT (2); | |
1953 | ||
1954 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1955 | if (sstr.class == 0) |
1956 | return 0; | |
b81654f1 MS |
1957 | |
1958 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1959 | if (new_pc != 0) |
1960 | *new_pc = res; | |
1961 | if (res == 0) | |
1962 | return 1; | |
b81654f1 MS |
1963 | return 0; |
1964 | } |