Commit | Line | Data |
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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 * | |
9a3d7dfd | 240 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
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 | ||
f636b87d AF |
596 | /* Determine if we are currently in the Objective-C dispatch function. |
597 | If so, get the address of the method function that the dispatcher | |
598 | would call and use that as the function to step into instead. Also | |
599 | skip over the trampoline for the function (if any). This is better | |
600 | for the user since they are only interested in stepping into the | |
601 | method function anyway. */ | |
602 | static CORE_ADDR | |
603 | objc_skip_trampoline (CORE_ADDR stop_pc) | |
604 | { | |
605 | CORE_ADDR real_stop_pc; | |
606 | CORE_ADDR method_stop_pc; | |
607 | ||
608 | real_stop_pc = SKIP_TRAMPOLINE_CODE (stop_pc); | |
609 | ||
610 | if (real_stop_pc != 0) | |
611 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
612 | else | |
613 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
614 | ||
615 | if (method_stop_pc) | |
616 | { | |
617 | real_stop_pc = SKIP_TRAMPOLINE_CODE (method_stop_pc); | |
618 | if (real_stop_pc == 0) | |
619 | real_stop_pc = method_stop_pc; | |
620 | } | |
621 | ||
622 | return real_stop_pc; | |
623 | } | |
624 | ||
b81654f1 MS |
625 | |
626 | /* Table mapping opcodes into strings for printing operators | |
627 | and precedences of the operators. */ | |
628 | ||
629 | static const struct op_print objc_op_print_tab[] = | |
630 | { | |
631 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
632 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
633 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
634 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
635 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
636 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
637 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
638 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
639 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
640 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
641 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
642 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
643 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
644 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
645 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
646 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
647 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
648 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
649 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
650 | {"%", BINOP_REM, PREC_MUL, 0}, | |
651 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
652 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
653 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
654 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
655 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
656 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
657 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
658 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
659 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
660 | {NULL, 0, 0, 0} | |
661 | }; | |
662 | ||
663 | struct type ** const (objc_builtin_types[]) = | |
664 | { | |
665 | &builtin_type_int, | |
666 | &builtin_type_long, | |
667 | &builtin_type_short, | |
668 | &builtin_type_char, | |
669 | &builtin_type_float, | |
670 | &builtin_type_double, | |
671 | &builtin_type_void, | |
672 | &builtin_type_long_long, | |
673 | &builtin_type_signed_char, | |
674 | &builtin_type_unsigned_char, | |
675 | &builtin_type_unsigned_short, | |
676 | &builtin_type_unsigned_int, | |
677 | &builtin_type_unsigned_long, | |
678 | &builtin_type_unsigned_long_long, | |
679 | &builtin_type_long_double, | |
680 | &builtin_type_complex, | |
681 | &builtin_type_double_complex, | |
682 | 0 | |
683 | }; | |
684 | ||
685 | const struct language_defn objc_language_defn = { | |
d2e6263c | 686 | "objective-c", /* Language name */ |
b81654f1 MS |
687 | language_objc, |
688 | objc_builtin_types, | |
689 | range_check_off, | |
690 | type_check_off, | |
691 | case_sensitive_on, | |
692 | objc_parse, | |
693 | objc_error, | |
694 | evaluate_subexp_standard, | |
695 | objc_printchar, /* Print a character constant */ | |
696 | objc_printstr, /* Function to print string constant */ | |
697 | objc_emit_char, | |
698 | objc_create_fundamental_type, /* Create fundamental type in this language */ | |
699 | c_print_type, /* Print a type using appropriate syntax */ | |
700 | c_val_print, /* Print a value using appropriate syntax */ | |
701 | c_value_print, /* Print a top-level value */ | |
f636b87d | 702 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
9a3d7dfd | 703 | objc_demangle, /* Language specific symbol demangler */ |
b81654f1 MS |
704 | {"", "", "", ""}, /* Binary format info */ |
705 | {"0%lo", "0", "o", ""}, /* Octal format info */ | |
706 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
707 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
d2e6263c MS |
708 | objc_op_print_tab, /* Expression operators for printing */ |
709 | 1, /* C-style arrays */ | |
b81654f1 MS |
710 | 0, /* String lower bound */ |
711 | &builtin_type_char, /* Type of string elements */ | |
712 | LANG_MAGIC | |
713 | }; | |
714 | ||
715 | /* | |
716 | * ObjC: | |
d2e6263c | 717 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
718 | */ |
719 | ||
d2e6263c | 720 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
721 | { |
722 | struct selname *next; | |
723 | char *msglist_sel; | |
724 | int msglist_len; | |
725 | }; | |
726 | ||
727 | static int msglist_len; | |
728 | static struct selname *selname_chain; | |
729 | static char *msglist_sel; | |
730 | ||
731 | void | |
732 | start_msglist(void) | |
733 | { | |
734 | register struct selname *new = | |
735 | (struct selname *) xmalloc (sizeof (struct selname)); | |
736 | ||
737 | new->next = selname_chain; | |
738 | new->msglist_len = msglist_len; | |
739 | new->msglist_sel = msglist_sel; | |
740 | msglist_len = 0; | |
741 | msglist_sel = (char *)xmalloc(1); | |
742 | *msglist_sel = 0; | |
743 | selname_chain = new; | |
744 | } | |
745 | ||
746 | void | |
747 | add_msglist(struct stoken *str, int addcolon) | |
748 | { | |
749 | char *s, *p; | |
750 | int len, plen; | |
751 | ||
d2e6263c MS |
752 | if (str == 0) { /* Unnamed arg, or... */ |
753 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
754 | msglist_len++; |
755 | return; | |
756 | } | |
757 | p = ""; | |
758 | plen = 0; | |
759 | } else { | |
760 | p = str->ptr; | |
761 | plen = str->length; | |
762 | } | |
763 | len = plen + strlen(msglist_sel) + 2; | |
764 | s = (char *)xmalloc(len); | |
765 | strcpy(s, msglist_sel); | |
766 | strncat(s, p, plen); | |
7248f48e | 767 | xfree(msglist_sel); |
b81654f1 MS |
768 | msglist_sel = s; |
769 | if (addcolon) { | |
770 | s[len-2] = ':'; | |
771 | s[len-1] = 0; | |
772 | msglist_len++; | |
773 | } else | |
774 | s[len-2] = '\0'; | |
775 | } | |
776 | ||
777 | int | |
778 | end_msglist(void) | |
779 | { | |
780 | register int val = msglist_len; | |
781 | register struct selname *sel = selname_chain; | |
782 | register char *p = msglist_sel; | |
783 | int selid; | |
784 | ||
785 | selname_chain = sel->next; | |
786 | msglist_len = sel->msglist_len; | |
787 | msglist_sel = sel->msglist_sel; | |
788 | selid = lookup_child_selector(p); | |
789 | if (!selid) | |
790 | error("Can't find selector \"%s\"", p); | |
791 | write_exp_elt_longcst (selid); | |
7248f48e | 792 | xfree(p); |
d2e6263c | 793 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 794 | xfree(sel); |
b81654f1 MS |
795 | |
796 | return val; | |
797 | } | |
798 | ||
799 | /* | |
800 | * Function: specialcmp (char *a, char *b) | |
801 | * | |
802 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 803 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
804 | */ |
805 | ||
806 | int specialcmp(char *a, char *b) | |
807 | { | |
808 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
809 | { | |
810 | if (*a != *b) | |
811 | return *a - *b; | |
812 | a++, b++; | |
813 | } | |
814 | if (*a && *a != ' ' && *a != ']') | |
815 | return 1; /* a is longer therefore greater */ | |
816 | if (*b && *b != ' ' && *b != ']') | |
817 | return -1; /* a is shorter therefore lesser */ | |
818 | return 0; /* a and b are identical */ | |
819 | } | |
820 | ||
821 | /* | |
36e53c63 | 822 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 823 | * |
d2e6263c MS |
824 | * Comparison function for use with qsort. Arguments are symbols or |
825 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
826 | */ |
827 | ||
828 | static int | |
36e53c63 | 829 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
830 | { |
831 | char *aname, *bname; | |
832 | ||
de5ad195 DC |
833 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
834 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 835 | if (aname == NULL || bname == NULL) |
b81654f1 MS |
836 | error ("internal: compare_selectors(1)"); |
837 | ||
7248f48e AF |
838 | aname = strchr(aname, ' '); |
839 | bname = strchr(bname, ' '); | |
840 | if (aname == NULL || bname == NULL) | |
b81654f1 MS |
841 | error ("internal: compare_selectors(2)"); |
842 | ||
843 | return specialcmp (aname+1, bname+1); | |
844 | } | |
845 | ||
846 | /* | |
847 | * Function: selectors_info (regexp, from_tty) | |
848 | * | |
d2e6263c MS |
849 | * Implements the "Info selectors" command. Takes an optional regexp |
850 | * arg. Lists all objective c selectors that match the regexp. Works | |
851 | * by grepping thru all symbols for objective c methods. Output list | |
852 | * is sorted and uniqued. | |
b81654f1 MS |
853 | */ |
854 | ||
855 | static void | |
856 | selectors_info (char *regexp, int from_tty) | |
857 | { | |
858 | struct objfile *objfile; | |
859 | struct minimal_symbol *msymbol; | |
860 | char *name; | |
861 | char *val; | |
862 | int matches = 0; | |
863 | int maxlen = 0; | |
864 | int ix; | |
865 | char myregexp[2048]; | |
866 | char asel[256]; | |
867 | struct symbol **sym_arr; | |
868 | int plusminus = 0; | |
869 | ||
870 | if (regexp == NULL) | |
d2e6263c | 871 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
872 | else |
873 | { | |
d2e6263c MS |
874 | if (*regexp == '+' || *regexp == '-') |
875 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
876 | plusminus = *regexp++; |
877 | while (*regexp == ' ' || *regexp == '\t') | |
878 | regexp++; | |
879 | } | |
880 | if (*regexp == '\0') | |
881 | strcpy(myregexp, ".*]"); | |
882 | else | |
883 | { | |
884 | strcpy(myregexp, regexp); | |
885 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
886 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
887 | else | |
888 | strcat(myregexp, ".*]"); | |
889 | } | |
890 | } | |
891 | ||
892 | if (regexp != NULL) | |
893 | if (0 != (val = re_comp (myregexp))) | |
894 | error ("Invalid regexp (%s): %s", val, regexp); | |
895 | ||
d2e6263c | 896 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
897 | ALL_MSYMBOLS (objfile, msymbol) |
898 | { | |
899 | QUIT; | |
7248f48e AF |
900 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
901 | if (name == NULL) | |
22abf04a | 902 | name = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
903 | if (name && |
904 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 905 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 906 | { |
d2e6263c | 907 | /* Filter for class/instance methods. */ |
b81654f1 | 908 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
909 | continue; |
910 | /* Find selector part. */ | |
911 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
912 | if (regexp == NULL || re_exec(++name) != 0) |
913 | { | |
914 | char *mystart = name; | |
915 | char *myend = (char *) strchr(mystart, ']'); | |
916 | ||
917 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 918 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
919 | matches++; |
920 | } | |
921 | } | |
922 | } | |
923 | if (matches) | |
924 | { | |
925 | printf_filtered ("Selectors matching \"%s\":\n\n", | |
926 | regexp ? regexp : "*"); | |
927 | ||
928 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
929 | matches = 0; | |
930 | ALL_MSYMBOLS (objfile, msymbol) | |
931 | { | |
932 | QUIT; | |
7248f48e AF |
933 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
934 | if (name == NULL) | |
22abf04a | 935 | name = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
936 | if (name && |
937 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 938 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 939 | { |
d2e6263c | 940 | /* Filter for class/instance methods. */ |
b81654f1 | 941 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
942 | continue; |
943 | /* Find selector part. */ | |
944 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
945 | if (regexp == NULL || re_exec(++name) != 0) |
946 | sym_arr[matches++] = (struct symbol *) msymbol; | |
947 | } | |
948 | } | |
949 | ||
950 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
951 | compare_selectors); | |
d2e6263c MS |
952 | /* Prevent compare on first iteration. */ |
953 | asel[0] = 0; | |
954 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
955 | { |
956 | char *p = asel; | |
957 | ||
958 | QUIT; | |
7248f48e AF |
959 | name = SYMBOL_DEMANGLED_NAME (sym_arr[ix]); |
960 | if (name == NULL) | |
22abf04a | 961 | name = DEPRECATED_SYMBOL_NAME (sym_arr[ix]); |
b81654f1 MS |
962 | name = strchr (name, ' ') + 1; |
963 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 964 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 965 | |
d2e6263c MS |
966 | /* Copy selector part. */ |
967 | while (*name && *name != ']') | |
b81654f1 MS |
968 | *p++ = *name++; |
969 | *p++ = '\0'; | |
d2e6263c MS |
970 | /* Print in columns. */ |
971 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
972 | } |
973 | begin_line(); | |
974 | } | |
975 | else | |
976 | printf_filtered ("No selectors matching \"%s\"\n", regexp ? regexp : "*"); | |
977 | } | |
978 | ||
979 | /* | |
36e53c63 | 980 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 981 | * |
d2e6263c MS |
982 | * Comparison function for use with qsort. Arguments are symbols or |
983 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
984 | */ |
985 | ||
986 | static int | |
36e53c63 | 987 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
988 | { |
989 | char *aname, *bname; | |
990 | ||
de5ad195 DC |
991 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
992 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 993 | if (aname == NULL || bname == NULL) |
b81654f1 MS |
994 | error ("internal: compare_classes(1)"); |
995 | ||
996 | return specialcmp (aname+1, bname+1); | |
997 | } | |
998 | ||
999 | /* | |
1000 | * Function: classes_info(regexp, from_tty) | |
1001 | * | |
1002 | * Implements the "info classes" command for objective c classes. | |
1003 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
1004 | * Works by grepping thru the list of objective c methods. List will |
1005 | * be sorted and uniqued (since one class may have many methods). | |
1006 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
1007 | */ |
1008 | ||
1009 | static void | |
1010 | classes_info (char *regexp, int from_tty) | |
1011 | { | |
1012 | struct objfile *objfile; | |
1013 | struct minimal_symbol *msymbol; | |
1014 | char *name; | |
1015 | char *val; | |
1016 | int matches = 0; | |
1017 | int maxlen = 0; | |
1018 | int ix; | |
1019 | char myregexp[2048]; | |
1020 | char aclass[256]; | |
1021 | struct symbol **sym_arr; | |
1022 | ||
1023 | if (regexp == NULL) | |
d2e6263c | 1024 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
1025 | else |
1026 | { | |
1027 | strcpy(myregexp, regexp); | |
1028 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 1029 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
1030 | myregexp[strlen(myregexp) - 1] = ' '; |
1031 | else | |
1032 | strcat(myregexp, ".* "); | |
1033 | } | |
1034 | ||
1035 | if (regexp != NULL) | |
1036 | if (0 != (val = re_comp (myregexp))) | |
1037 | error ("Invalid regexp (%s): %s", val, regexp); | |
1038 | ||
d2e6263c | 1039 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
1040 | ALL_MSYMBOLS (objfile, msymbol) |
1041 | { | |
1042 | QUIT; | |
7248f48e AF |
1043 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
1044 | if (name == NULL) | |
22abf04a | 1045 | name = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
1046 | if (name && |
1047 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1048 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1049 | if (regexp == NULL || re_exec(name+2) != 0) |
1050 | { | |
d2e6263c MS |
1051 | /* Compute length of classname part. */ |
1052 | char *mystart = name + 2; | |
b81654f1 MS |
1053 | char *myend = (char *) strchr(mystart, ' '); |
1054 | ||
1055 | if (myend && (myend - mystart > maxlen)) | |
1056 | maxlen = myend - mystart; | |
1057 | matches++; | |
1058 | } | |
1059 | } | |
1060 | if (matches) | |
1061 | { | |
1062 | printf_filtered ("Classes matching \"%s\":\n\n", | |
1063 | regexp ? regexp : "*"); | |
1064 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
1065 | matches = 0; | |
1066 | ALL_MSYMBOLS (objfile, msymbol) | |
1067 | { | |
1068 | QUIT; | |
7248f48e AF |
1069 | name = SYMBOL_DEMANGLED_NAME (msymbol); |
1070 | if (name == NULL) | |
22abf04a | 1071 | name = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
1072 | if (name && |
1073 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1074 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1075 | if (regexp == NULL || re_exec(name+2) != 0) |
1076 | sym_arr[matches++] = (struct symbol *) msymbol; | |
1077 | } | |
1078 | ||
1079 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
1080 | compare_classes); | |
d2e6263c MS |
1081 | /* Prevent compare on first iteration. */ |
1082 | aclass[0] = 0; | |
1083 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
1084 | { |
1085 | char *p = aclass; | |
1086 | ||
1087 | QUIT; | |
7248f48e AF |
1088 | name = SYMBOL_DEMANGLED_NAME (sym_arr[ix]); |
1089 | if (name == NULL) | |
22abf04a | 1090 | name = DEPRECATED_SYMBOL_NAME (sym_arr[ix]); |
b81654f1 MS |
1091 | name += 2; |
1092 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 1093 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 1094 | |
d2e6263c MS |
1095 | /* Copy class part of method name. */ |
1096 | while (*name && *name != ' ') | |
b81654f1 MS |
1097 | *p++ = *name++; |
1098 | *p++ = '\0'; | |
d2e6263c MS |
1099 | /* Print in columns. */ |
1100 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
1101 | } |
1102 | begin_line(); | |
1103 | } | |
1104 | else | |
1105 | printf_filtered ("No classes matching \"%s\"\n", regexp ? regexp : "*"); | |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
1110 | * | |
1111 | * Input: a string representing a selector | |
1112 | * a pointer to an array of symbol pointers | |
1113 | * possibly a pointer to a symbol found by the caller. | |
1114 | * | |
d2e6263c MS |
1115 | * Output: number of methods that implement that selector. Side |
1116 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 1117 | * |
d2e6263c MS |
1118 | * By analogy with function "find_methods" (symtab.c), builds a list |
1119 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1120 | * (symtab.c) can list them and ask the user to choose one or more. | |
1121 | * In this case the matches are objective c methods | |
1122 | * ("implementations") matching an objective c selector. | |
b81654f1 | 1123 | * |
d2e6263c MS |
1124 | * Note that it is possible for a normal (c-style) function to have |
1125 | * the same name as an objective c selector. To prevent the selector | |
1126 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1127 | * search for such a function first, and if it finds one, pass it in | |
1128 | * to us. We will then integrate it into the list. We also search | |
1129 | * for one here, among the minsyms. | |
b81654f1 | 1130 | * |
d2e6263c MS |
1131 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
1132 | * into two parts: debuggable (struct symbol) syms, and | |
1133 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1134 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1135 | * be the index of the first non-debuggable one). | |
b81654f1 MS |
1136 | */ |
1137 | ||
1138 | /* | |
1139 | * Function: total_number_of_imps (char *selector); | |
1140 | * | |
1141 | * Input: a string representing a selector | |
1142 | * Output: number of methods that implement that selector. | |
1143 | * | |
d2e6263c | 1144 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 1145 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
1146 | * matching the input, and to allocate an array of pointers to them |
1147 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
1148 | */ |
1149 | ||
1150 | char * | |
1151 | parse_selector (char *method, char **selector) | |
1152 | { | |
1153 | char *s1 = NULL; | |
1154 | char *s2 = NULL; | |
1155 | int found_quote = 0; | |
1156 | ||
1157 | char *nselector = NULL; | |
1158 | ||
1159 | CHECK (selector != NULL); | |
1160 | ||
1161 | s1 = method; | |
1162 | ||
1163 | while (isspace (*s1)) | |
1164 | s1++; | |
1165 | if (*s1 == '\'') | |
1166 | { | |
1167 | found_quote = 1; | |
1168 | s1++; | |
1169 | } | |
1170 | while (isspace (*s1)) | |
1171 | s1++; | |
1172 | ||
1173 | nselector = s1; | |
1174 | s2 = s1; | |
1175 | ||
1176 | for (;;) { | |
1177 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1178 | *s1++ = *s2; | |
1179 | else if (isspace (*s2)) | |
1180 | ; | |
1181 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1182 | break; | |
1183 | else | |
1184 | return NULL; | |
1185 | s2++; | |
1186 | } | |
1187 | *s1++ = '\0'; | |
1188 | ||
1189 | while (isspace (*s2)) | |
1190 | s2++; | |
1191 | if (found_quote) | |
1192 | { | |
1193 | if (*s2 == '\'') | |
1194 | s2++; | |
1195 | while (isspace (*s2)) | |
1196 | s2++; | |
1197 | } | |
1198 | ||
1199 | if (selector != NULL) | |
1200 | *selector = nselector; | |
1201 | ||
1202 | return s2; | |
1203 | } | |
1204 | ||
1205 | char * | |
d2e6263c MS |
1206 | parse_method (char *method, char *type, char **class, |
1207 | char **category, char **selector) | |
b81654f1 MS |
1208 | { |
1209 | char *s1 = NULL; | |
1210 | char *s2 = NULL; | |
1211 | int found_quote = 0; | |
1212 | ||
1213 | char ntype = '\0'; | |
1214 | char *nclass = NULL; | |
1215 | char *ncategory = NULL; | |
1216 | char *nselector = NULL; | |
1217 | ||
1218 | CHECK (type != NULL); | |
1219 | CHECK (class != NULL); | |
1220 | CHECK (category != NULL); | |
1221 | CHECK (selector != NULL); | |
1222 | ||
1223 | s1 = method; | |
1224 | ||
1225 | while (isspace (*s1)) | |
1226 | s1++; | |
1227 | if (*s1 == '\'') | |
1228 | { | |
1229 | found_quote = 1; | |
1230 | s1++; | |
1231 | } | |
1232 | while (isspace (*s1)) | |
1233 | s1++; | |
1234 | ||
1235 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1236 | ntype = *s1++; | |
1237 | ||
1238 | while (isspace (*s1)) | |
1239 | s1++; | |
1240 | ||
1241 | if (*s1 != '[') | |
1242 | return NULL; | |
1243 | s1++; | |
1244 | ||
1245 | nclass = s1; | |
1246 | while (isalnum (*s1) || (*s1 == '_')) | |
1247 | s1++; | |
1248 | ||
1249 | s2 = s1; | |
1250 | while (isspace (*s2)) | |
1251 | s2++; | |
1252 | ||
1253 | if (*s2 == '(') | |
1254 | { | |
1255 | s2++; | |
1256 | while (isspace (*s2)) | |
1257 | s2++; | |
1258 | ncategory = s2; | |
1259 | while (isalnum (*s2) || (*s2 == '_')) | |
1260 | s2++; | |
1261 | *s2++ = '\0'; | |
1262 | } | |
1263 | ||
d2e6263c | 1264 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1265 | *s1++ = '\0'; |
1266 | ||
1267 | nselector = s2; | |
1268 | s1 = s2; | |
1269 | ||
1270 | for (;;) { | |
1271 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1272 | *s1++ = *s2; | |
1273 | else if (isspace (*s2)) | |
1274 | ; | |
1275 | else if (*s2 == ']') | |
1276 | break; | |
1277 | else | |
1278 | return NULL; | |
1279 | s2++; | |
1280 | } | |
1281 | *s1++ = '\0'; | |
1282 | s2++; | |
1283 | ||
1284 | while (isspace (*s2)) | |
1285 | s2++; | |
1286 | if (found_quote) | |
1287 | { | |
1288 | if (*s2 != '\'') | |
1289 | return NULL; | |
1290 | s2++; | |
1291 | while (isspace (*s2)) | |
1292 | s2++; | |
1293 | } | |
1294 | ||
1295 | if (type != NULL) | |
1296 | *type = ntype; | |
1297 | if (class != NULL) | |
1298 | *class = nclass; | |
1299 | if (category != NULL) | |
1300 | *category = ncategory; | |
1301 | if (selector != NULL) | |
1302 | *selector = nselector; | |
1303 | ||
1304 | return s2; | |
1305 | } | |
1306 | ||
2f9a90b4 | 1307 | static void |
d2e6263c MS |
1308 | find_methods (struct symtab *symtab, char type, |
1309 | const char *class, const char *category, | |
1310 | const char *selector, struct symbol **syms, | |
1311 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1312 | { |
1313 | struct objfile *objfile = NULL; | |
1314 | struct minimal_symbol *msymbol = NULL; | |
1315 | struct block *block = NULL; | |
1316 | struct symbol *sym = NULL; | |
1317 | ||
1318 | char *symname = NULL; | |
1319 | ||
1320 | char ntype = '\0'; | |
1321 | char *nclass = NULL; | |
1322 | char *ncategory = NULL; | |
1323 | char *nselector = NULL; | |
1324 | ||
1325 | unsigned int csym = 0; | |
1326 | unsigned int cdebug = 0; | |
1327 | ||
1328 | static char *tmp = NULL; | |
1329 | static unsigned int tmplen = 0; | |
1330 | ||
1331 | CHECK (nsym != NULL); | |
1332 | CHECK (ndebug != NULL); | |
1333 | ||
1334 | if (symtab) | |
1335 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1336 | ||
1337 | ALL_MSYMBOLS (objfile, msymbol) | |
1338 | { | |
1339 | QUIT; | |
1340 | ||
1341 | if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text)) | |
d2e6263c | 1342 | /* Not a function or method. */ |
b81654f1 MS |
1343 | continue; |
1344 | ||
1345 | if (symtab) | |
8da065d5 DC |
1346 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) || |
1347 | (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block))) | |
d2e6263c | 1348 | /* Not in the specified symtab. */ |
b81654f1 MS |
1349 | continue; |
1350 | ||
1351 | symname = SYMBOL_DEMANGLED_NAME (msymbol); | |
1352 | if (symname == NULL) | |
22abf04a | 1353 | symname = DEPRECATED_SYMBOL_NAME (msymbol); |
b81654f1 MS |
1354 | if (symname == NULL) |
1355 | continue; | |
1356 | ||
1357 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
d2e6263c | 1358 | /* Not a method name. */ |
b81654f1 MS |
1359 | continue; |
1360 | ||
1361 | while ((strlen (symname) + 1) >= tmplen) | |
1362 | { | |
1363 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1364 | tmp = xrealloc (tmp, tmplen); | |
1365 | } | |
1366 | strcpy (tmp, symname); | |
1367 | ||
1368 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1369 | continue; | |
1370 | ||
1371 | if ((type != '\0') && (ntype != type)) | |
1372 | continue; | |
1373 | ||
d2e6263c MS |
1374 | if ((class != NULL) |
1375 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
b81654f1 MS |
1376 | continue; |
1377 | ||
d2e6263c MS |
1378 | if ((category != NULL) && |
1379 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
b81654f1 MS |
1380 | continue; |
1381 | ||
d2e6263c MS |
1382 | if ((selector != NULL) && |
1383 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
b81654f1 MS |
1384 | continue; |
1385 | ||
1386 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1387 | if (sym != NULL) | |
1388 | { | |
36e53c63 | 1389 | const char *newsymname = SYMBOL_DEMANGLED_NAME (sym); |
b81654f1 MS |
1390 | |
1391 | if (newsymname == NULL) | |
22abf04a | 1392 | newsymname = DEPRECATED_SYMBOL_NAME (sym); |
b81654f1 MS |
1393 | if (strcmp (symname, newsymname) == 0) |
1394 | { | |
d2e6263c MS |
1395 | /* Found a high-level method sym: swap it into the |
1396 | lower part of sym_arr (below num_debuggable). */ | |
b81654f1 MS |
1397 | if (syms != NULL) |
1398 | { | |
1399 | syms[csym] = syms[cdebug]; | |
1400 | syms[cdebug] = sym; | |
1401 | } | |
1402 | csym++; | |
1403 | cdebug++; | |
1404 | } | |
1405 | else | |
1406 | { | |
d2e6263c MS |
1407 | warning ( |
1408 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
b81654f1 MS |
1409 | newsymname, symname); |
1410 | if (syms != NULL) | |
1411 | syms[csym] = (struct symbol *) msymbol; | |
1412 | csym++; | |
1413 | } | |
1414 | } | |
1415 | else | |
1416 | { | |
d2e6263c | 1417 | /* Found a non-debuggable method symbol. */ |
b81654f1 MS |
1418 | if (syms != NULL) |
1419 | syms[csym] = (struct symbol *) msymbol; | |
1420 | csym++; | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | if (nsym != NULL) | |
1425 | *nsym = csym; | |
1426 | if (ndebug != NULL) | |
1427 | *ndebug = cdebug; | |
1428 | } | |
1429 | ||
1430 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1431 | char *method, struct symbol **syms, |
1432 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1433 | { |
1434 | char type = '\0'; | |
1435 | char *class = NULL; | |
1436 | char *category = NULL; | |
1437 | char *selector = NULL; | |
1438 | ||
1439 | unsigned int csym = 0; | |
1440 | unsigned int cdebug = 0; | |
1441 | ||
1442 | unsigned int ncsym = 0; | |
1443 | unsigned int ncdebug = 0; | |
1444 | ||
1445 | char *buf = NULL; | |
1446 | char *tmp = NULL; | |
1447 | ||
1448 | CHECK (nsym != NULL); | |
1449 | CHECK (ndebug != NULL); | |
1450 | ||
1451 | if (nsym != NULL) | |
1452 | *nsym = 0; | |
1453 | if (ndebug != NULL) | |
1454 | *ndebug = 0; | |
1455 | ||
1456 | buf = (char *) alloca (strlen (method) + 1); | |
1457 | strcpy (buf, method); | |
1458 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1459 | ||
1460 | if (tmp == NULL) { | |
1461 | ||
1462 | struct symtab *sym_symtab = NULL; | |
1463 | struct symbol *sym = NULL; | |
1464 | struct minimal_symbol *msym = NULL; | |
1465 | ||
1466 | strcpy (buf, method); | |
1467 | tmp = parse_selector (buf, &selector); | |
1468 | ||
1469 | if (tmp == NULL) | |
1470 | return NULL; | |
1471 | ||
1472 | sym = lookup_symbol (selector, block, VAR_NAMESPACE, 0, &sym_symtab); | |
1473 | if (sym != NULL) | |
1474 | { | |
1475 | if (syms) | |
1476 | syms[csym] = sym; | |
1477 | csym++; | |
1478 | cdebug++; | |
1479 | } | |
1480 | ||
1481 | if (sym == NULL) | |
1482 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1483 | ||
1484 | if (msym != NULL) | |
1485 | { | |
1486 | if (syms) | |
36e53c63 | 1487 | syms[csym] = (struct symbol *)msym; |
b81654f1 MS |
1488 | csym++; |
1489 | } | |
1490 | } | |
1491 | ||
1492 | if (syms != NULL) | |
d2e6263c MS |
1493 | find_methods (symtab, type, class, category, selector, |
1494 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1495 | else |
d2e6263c MS |
1496 | find_methods (symtab, type, class, category, selector, |
1497 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1498 | |
d2e6263c | 1499 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1500 | if (ncsym == 0 && ncdebug == 0) |
1501 | return method; | |
1502 | ||
1503 | /* Take debug symbols from the second batch of symbols and swap them | |
1504 | * with debug symbols from the first batch. Repeat until either the | |
1505 | * second section is out of debug symbols or the first section is | |
1506 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1507 | * packed to the beginning of the buffer. |
1508 | */ | |
b81654f1 MS |
1509 | |
1510 | if (syms != NULL) | |
1511 | { | |
1512 | while ((cdebug < csym) && (ncdebug > 0)) | |
1513 | { | |
1514 | struct symbol *s = NULL; | |
d2e6263c MS |
1515 | /* First non-debugging symbol. */ |
1516 | unsigned int i = cdebug; | |
1517 | /* Last of second batch of debug symbols. */ | |
1518 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1519 | |
1520 | s = syms[j]; | |
1521 | syms[j] = syms[i]; | |
1522 | syms[i] = s; | |
1523 | ||
d2e6263c MS |
1524 | /* We've moved a symbol from the second debug section to the |
1525 | first one. */ | |
b81654f1 MS |
1526 | cdebug++; |
1527 | ncdebug--; | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | csym += ncsym; | |
1532 | cdebug += ncdebug; | |
1533 | ||
1534 | if (nsym != NULL) | |
1535 | *nsym = csym; | |
1536 | if (ndebug != NULL) | |
1537 | *ndebug = cdebug; | |
1538 | ||
1539 | if (syms == NULL) | |
1540 | return method + (tmp - buf); | |
1541 | ||
1542 | if (csym > 1) | |
1543 | { | |
d2e6263c | 1544 | /* Sort debuggable symbols. */ |
b81654f1 | 1545 | if (cdebug > 1) |
d2e6263c MS |
1546 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1547 | compare_classes); | |
b81654f1 | 1548 | |
d2e6263c | 1549 | /* Sort minimal_symbols. */ |
b81654f1 | 1550 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1551 | qsort (&syms[cdebug], csym - cdebug, |
1552 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1553 | } |
d2e6263c MS |
1554 | /* Terminate the sym_arr list. */ |
1555 | syms[csym] = 0; | |
b81654f1 MS |
1556 | |
1557 | return method + (tmp - buf); | |
1558 | } | |
1559 | ||
1560 | void | |
1561 | print_object_command (char *args, int from_tty) | |
1562 | { | |
1563 | struct value *object, *function, *description; | |
36e53c63 | 1564 | CORE_ADDR string_addr, object_addr; |
b81654f1 MS |
1565 | int i = 0; |
1566 | char c = -1; | |
1567 | ||
1568 | if (!args || !*args) | |
d2e6263c MS |
1569 | error ( |
1570 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1571 | |
1572 | { | |
1573 | struct expression *expr = parse_expression (args); | |
d2e6263c MS |
1574 | register struct cleanup *old_chain = |
1575 | make_cleanup (free_current_contents, &expr); | |
b81654f1 MS |
1576 | int pc = 0; |
1577 | ||
b81654f1 MS |
1578 | object = expr->language_defn->evaluate_exp (builtin_type_void_data_ptr, |
1579 | expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1580 | do_cleanups (old_chain); |
1581 | } | |
1582 | ||
36e53c63 AF |
1583 | /* Validate the address for sanity. */ |
1584 | object_addr = value_as_long (object); | |
1585 | read_memory (object_addr, &c, 1); | |
1586 | ||
7248f48e | 1587 | function = find_function_in_inferior ("_NSPrintForDebugger"); |
36e53c63 | 1588 | if (function == NULL) |
b81654f1 MS |
1589 | error ("Unable to locate _NSPrintForDebugger in child process"); |
1590 | ||
1591 | description = call_function_by_hand (function, 1, &object); | |
1592 | ||
7248f48e AF |
1593 | string_addr = value_as_long (description); |
1594 | if (string_addr == 0) | |
b81654f1 MS |
1595 | error ("object returns null description"); |
1596 | ||
1597 | read_memory (string_addr + i++, &c, 1); | |
1598 | if (c != '\0') | |
1599 | do | |
d2e6263c | 1600 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1601 | QUIT; |
1602 | printf_filtered ("%c", c); | |
1603 | read_memory (string_addr + i++, &c, 1); | |
1604 | } while (c != 0); | |
1605 | else | |
1606 | printf_filtered("<object returns empty description>"); | |
1607 | printf_filtered ("\n"); | |
1608 | } | |
1609 | ||
d2e6263c MS |
1610 | /* The data structure 'methcalls' is used to detect method calls (thru |
1611 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1612 | * and ultimately find the method being called. | |
b81654f1 MS |
1613 | */ |
1614 | ||
1615 | struct objc_methcall { | |
1616 | char *name; | |
d2e6263c | 1617 | /* Return instance method to be called. */ |
36e53c63 | 1618 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1619 | /* Start of pc range corresponding to method invocation. */ |
1620 | CORE_ADDR begin; | |
1621 | /* End of pc range corresponding to method invocation. */ | |
1622 | CORE_ADDR end; | |
b81654f1 MS |
1623 | }; |
1624 | ||
d2e6263c MS |
1625 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1626 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1627 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1628 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1629 | |
1630 | static struct objc_methcall methcalls[] = { | |
1631 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1632 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1633 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1634 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1635 | { "_objc_getClass", NULL, 0, 0}, | |
1636 | { "_objc_getMetaClass", NULL, 0, 0} | |
1637 | }; | |
1638 | ||
1639 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1640 | ||
d2e6263c MS |
1641 | /* The following function, "find_objc_msgsend", fills in the data |
1642 | * structure "objc_msgs" by finding the addresses of each of the | |
1643 | * (currently four) functions that it holds (of which objc_msgSend is | |
1644 | * the first). This must be called each time symbols are loaded, in | |
1645 | * case the functions have moved for some reason. | |
b81654f1 MS |
1646 | */ |
1647 | ||
1648 | void | |
1649 | find_objc_msgsend (void) | |
1650 | { | |
1651 | unsigned int i; | |
1652 | for (i = 0; i < nmethcalls; i++) { | |
1653 | ||
1654 | struct minimal_symbol *func; | |
1655 | ||
d2e6263c | 1656 | /* Try both with and without underscore. */ |
b81654f1 MS |
1657 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1658 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1659 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1660 | } | |
1661 | if (func == NULL) { | |
1662 | methcalls[i].begin = 0; | |
1663 | methcalls[i].end = 0; | |
1664 | continue; | |
1665 | } | |
1666 | ||
1667 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1668 | do { | |
1669 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1670 | } while (methcalls[i].begin == methcalls[i].end); | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | /* find_objc_msgcall (replaces pc_off_limits) | |
1675 | * | |
d2e6263c MS |
1676 | * ALL that this function now does is to determine whether the input |
1677 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1678 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1679 | * if so, it returns the address of the method that will be called. | |
1680 | * | |
1681 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1682 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1683 | * returning the address of the shlib function that would be called. |
d2e6263c MS |
1684 | * That functionality has been moved into the SKIP_TRAMPOLINE_CODE and |
1685 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- | |
1686 | * dependent modules. | |
b81654f1 MS |
1687 | */ |
1688 | ||
1689 | struct objc_submethod_helper_data { | |
36e53c63 | 1690 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1691 | CORE_ADDR pc; |
1692 | CORE_ADDR *new_pc; | |
1693 | }; | |
1694 | ||
1695 | int | |
7248f48e | 1696 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1697 | { |
d2e6263c MS |
1698 | struct objc_submethod_helper_data *s = |
1699 | (struct objc_submethod_helper_data *) arg; | |
1700 | ||
1701 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1702 | return 1; |
d2e6263c | 1703 | else |
b81654f1 | 1704 | return 0; |
b81654f1 MS |
1705 | } |
1706 | ||
1707 | int | |
36e53c63 | 1708 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1709 | CORE_ADDR pc, |
1710 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1711 | { |
1712 | struct objc_submethod_helper_data s; | |
1713 | ||
1714 | s.f = f; | |
1715 | s.pc = pc; | |
1716 | s.new_pc = new_pc; | |
1717 | ||
1718 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1719 | (void *) &s, |
d2e6263c MS |
1720 | "Unable to determine target of Objective-C method call (ignoring):\n", |
1721 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1722 | return 1; |
d2e6263c | 1723 | else |
b81654f1 | 1724 | return 0; |
b81654f1 MS |
1725 | } |
1726 | ||
1727 | int | |
1728 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1729 | { | |
1730 | unsigned int i; | |
1731 | ||
1732 | find_objc_msgsend (); | |
1733 | if (new_pc != NULL) { *new_pc = 0; } | |
1734 | ||
d2e6263c MS |
1735 | for (i = 0; i < nmethcalls; i++) |
1736 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1737 | { | |
1738 | if (methcalls[i].stop_at != NULL) | |
1739 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1740 | pc, new_pc); | |
1741 | else | |
1742 | return 0; | |
b81654f1 | 1743 | } |
d2e6263c | 1744 | |
b81654f1 MS |
1745 | return 0; |
1746 | } | |
1747 | ||
1748 | void | |
1749 | _initialize_objc_language (void) | |
1750 | { | |
1751 | add_language (&objc_language_defn); | |
d2e6263c MS |
1752 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1753 | "All Objective-C selectors, or those matching REGEXP."); | |
1754 | add_info ("classes", classes_info, /* INFO CLASSES command. */ | |
1755 | "All Objective-C classes, or those matching REGEXP."); | |
b81654f1 | 1756 | add_com ("print-object", class_vars, print_object_command, |
36e53c63 | 1757 | "Ask an Objective-C object to print itself."); |
b81654f1 MS |
1758 | add_com_alias ("po", "print-object", class_vars, 1); |
1759 | } | |
1760 | ||
1761 | #if defined (__powerpc__) || defined (__ppc__) | |
1762 | static unsigned long FETCH_ARGUMENT (int i) | |
1763 | { | |
1764 | return read_register (3 + i); | |
1765 | } | |
1766 | #elif defined (__i386__) | |
1767 | static unsigned long FETCH_ARGUMENT (int i) | |
1768 | { | |
1769 | CORE_ADDR stack = read_register (SP_REGNUM); | |
1770 | return read_memory_unsigned_integer (stack + (4 * (i + 1)), 4); | |
1771 | } | |
1772 | #elif defined (__sparc__) | |
1773 | static unsigned long FETCH_ARGUMENT (int i) | |
1774 | { | |
1775 | return read_register (O0_REGNUM + i); | |
1776 | } | |
1777 | #elif defined (__hppa__) || defined (__hppa) | |
1778 | static unsigned long FETCH_ARGUMENT (int i) | |
1779 | { | |
1780 | return read_register (R0_REGNUM + 26 - i); | |
1781 | } | |
1782 | #else | |
1783 | #error unknown architecture | |
1784 | #endif | |
1785 | ||
1786 | #if defined (__hppa__) || defined (__hppa) | |
1787 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1788 | { | |
d2e6263c | 1789 | if (pc & 0x2) |
b81654f1 | 1790 | pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, 4); |
d2e6263c | 1791 | |
b81654f1 MS |
1792 | return pc; |
1793 | } | |
1794 | #else | |
1795 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1796 | { | |
1797 | return pc; | |
1798 | } | |
1799 | #endif | |
1800 | ||
1801 | static void | |
1802 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1803 | { | |
d2e6263c | 1804 | method->name = read_memory_unsigned_integer (addr + 0, 4); |
b81654f1 | 1805 | method->types = read_memory_unsigned_integer (addr + 4, 4); |
d2e6263c | 1806 | method->imp = read_memory_unsigned_integer (addr + 8, 4); |
b81654f1 MS |
1807 | } |
1808 | ||
1809 | static | |
1810 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1811 | { | |
1812 | return read_memory_unsigned_integer (addr + 4, 4); | |
1813 | } | |
1814 | ||
1815 | static void | |
1816 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1817 | struct objc_method *method) | |
1818 | { | |
1819 | CHECK_FATAL (num < read_objc_methlist_nmethods (addr)); | |
1820 | read_objc_method (addr + 8 + (12 * num), method); | |
1821 | } | |
1822 | ||
1823 | static void | |
1824 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1825 | { | |
1826 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1827 | } | |
1828 | ||
1829 | static void | |
1830 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1831 | { | |
1832 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1833 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1834 | }; | |
1835 | ||
1836 | static void | |
1837 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1838 | { | |
1839 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1840 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1841 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1842 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1843 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1844 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1845 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1846 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1847 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1848 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1849 | } | |
1850 | ||
1851 | CORE_ADDR | |
1852 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) | |
1853 | { | |
1854 | CORE_ADDR subclass = class; | |
1855 | ||
d2e6263c MS |
1856 | while (subclass != 0) |
1857 | { | |
b81654f1 | 1858 | |
d2e6263c MS |
1859 | struct objc_class class_str; |
1860 | unsigned mlistnum = 0; | |
b81654f1 | 1861 | |
d2e6263c | 1862 | read_objc_class (subclass, &class_str); |
b81654f1 | 1863 | |
d2e6263c MS |
1864 | for (;;) |
1865 | { | |
1866 | CORE_ADDR mlist; | |
1867 | unsigned long nmethods; | |
1868 | unsigned long i; | |
b81654f1 | 1869 | |
d2e6263c MS |
1870 | mlist = read_memory_unsigned_integer (class_str.methods + |
1871 | (4 * mlistnum), 4); | |
1872 | if (mlist == 0) | |
1873 | break; | |
b81654f1 | 1874 | |
d2e6263c | 1875 | nmethods = read_objc_methlist_nmethods (mlist); |
b81654f1 | 1876 | |
d2e6263c MS |
1877 | for (i = 0; i < nmethods; i++) |
1878 | { | |
1879 | struct objc_method meth_str; | |
1880 | read_objc_methlist_method (mlist, i, &meth_str); | |
b81654f1 MS |
1881 | |
1882 | #if 0 | |
d2e6263c MS |
1883 | fprintf (stderr, |
1884 | "checking method 0x%lx against selector 0x%lx\n", | |
1885 | meth_str.name, sel); | |
b81654f1 MS |
1886 | #endif |
1887 | ||
d2e6263c MS |
1888 | if (meth_str.name == sel) |
1889 | return CONVERT_FUNCPTR (meth_str.imp); | |
1890 | } | |
1891 | mlistnum++; | |
b81654f1 | 1892 | } |
d2e6263c | 1893 | subclass = class_str.super_class; |
b81654f1 | 1894 | } |
b81654f1 MS |
1895 | |
1896 | return 0; | |
1897 | } | |
1898 | ||
1899 | CORE_ADDR | |
1900 | find_implementation (CORE_ADDR object, CORE_ADDR sel) | |
1901 | { | |
1902 | struct objc_object ostr; | |
1903 | ||
d2e6263c MS |
1904 | if (object == 0) |
1905 | return 0; | |
b81654f1 | 1906 | read_objc_object (object, &ostr); |
d2e6263c MS |
1907 | if (ostr.isa == 0) |
1908 | return 0; | |
b81654f1 MS |
1909 | |
1910 | return find_implementation_from_class (ostr.isa, sel); | |
1911 | } | |
1912 | ||
1913 | static int | |
1914 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1915 | { | |
1916 | CORE_ADDR object; | |
1917 | CORE_ADDR sel; | |
1918 | CORE_ADDR res; | |
1919 | ||
1920 | object = FETCH_ARGUMENT (0); | |
1921 | sel = FETCH_ARGUMENT (1); | |
1922 | ||
1923 | res = find_implementation (object, sel); | |
d2e6263c MS |
1924 | if (new_pc != 0) |
1925 | *new_pc = res; | |
1926 | if (res == 0) | |
1927 | return 1; | |
b81654f1 MS |
1928 | return 0; |
1929 | } | |
1930 | ||
1931 | static int | |
1932 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1933 | { | |
1934 | CORE_ADDR object; | |
1935 | CORE_ADDR sel; | |
1936 | CORE_ADDR res; | |
1937 | ||
1938 | object = FETCH_ARGUMENT (1); | |
1939 | sel = FETCH_ARGUMENT (2); | |
1940 | ||
1941 | res = find_implementation (object, sel); | |
d2e6263c MS |
1942 | if (new_pc != 0) |
1943 | *new_pc = res; | |
1944 | if (res == 0) | |
1945 | return 1; | |
b81654f1 MS |
1946 | return 0; |
1947 | } | |
1948 | ||
1949 | static int | |
1950 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1951 | { | |
1952 | struct objc_super sstr; | |
1953 | ||
1954 | CORE_ADDR super; | |
1955 | CORE_ADDR sel; | |
1956 | CORE_ADDR res; | |
1957 | ||
1958 | super = FETCH_ARGUMENT (0); | |
1959 | sel = FETCH_ARGUMENT (1); | |
1960 | ||
1961 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1962 | if (sstr.class == 0) |
1963 | return 0; | |
b81654f1 MS |
1964 | |
1965 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1966 | if (new_pc != 0) |
1967 | *new_pc = res; | |
1968 | if (res == 0) | |
1969 | return 1; | |
b81654f1 MS |
1970 | return 0; |
1971 | } | |
1972 | ||
1973 | static int | |
1974 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1975 | { | |
1976 | struct objc_super sstr; | |
1977 | ||
1978 | CORE_ADDR super; | |
1979 | CORE_ADDR sel; | |
1980 | CORE_ADDR res; | |
1981 | ||
1982 | super = FETCH_ARGUMENT (1); | |
1983 | sel = FETCH_ARGUMENT (2); | |
1984 | ||
1985 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1986 | if (sstr.class == 0) |
1987 | return 0; | |
b81654f1 MS |
1988 | |
1989 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1990 | if (new_pc != 0) |
1991 | *new_pc = res; | |
1992 | if (res == 0) | |
1993 | return 1; | |
b81654f1 MS |
1994 | return 0; |
1995 | } |