Commit | Line | Data |
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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
437666f8 | 3 | Copyright 2002 Free Software Foundation, Inc. |
b81654f1 | 4 | |
437666f8 AC |
5 | Contributed by Apple Computer, Inc. |
6 | Written by Michael Snyder. | |
b81654f1 | 7 | |
437666f8 | 8 | This file is part of GDB. |
b81654f1 | 9 | |
437666f8 AC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
b81654f1 MS |
24 | |
25 | #include "defs.h" | |
26 | #include "symtab.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "parser-defs.h" | |
30 | #include "language.h" | |
d2e6263c | 31 | #include "c-lang.h" |
b81654f1 MS |
32 | #include "objc-lang.h" |
33 | #include "complaints.h" | |
34 | #include "value.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
37 | #include "string.h" /* for strchr */ | |
38 | #include "target.h" /* for target_has_execution */ | |
39 | #include "gdbcore.h" | |
40 | #include "gdbcmd.h" | |
41 | #include "frame.h" | |
42 | #include "gdb_regex.h" | |
43 | #include "regcache.h" | |
44 | ||
45 | #include <ctype.h> | |
46 | ||
47 | struct objc_object { | |
48 | CORE_ADDR isa; | |
49 | }; | |
50 | ||
51 | struct objc_class { | |
52 | CORE_ADDR isa; | |
53 | CORE_ADDR super_class; | |
54 | CORE_ADDR name; | |
55 | long version; | |
56 | long info; | |
57 | long instance_size; | |
58 | CORE_ADDR ivars; | |
59 | CORE_ADDR methods; | |
60 | CORE_ADDR cache; | |
61 | CORE_ADDR protocols; | |
62 | }; | |
63 | ||
64 | struct objc_super { | |
65 | CORE_ADDR receiver; | |
66 | CORE_ADDR class; | |
67 | }; | |
68 | ||
69 | struct objc_method { | |
70 | CORE_ADDR name; | |
71 | CORE_ADDR types; | |
72 | CORE_ADDR imp; | |
73 | }; | |
74 | ||
75 | /* Complaints about ObjC classes, selectors, etc. */ | |
76 | ||
d2e6263c MS |
77 | static struct complaint noclass_lookup_complaint = { |
78 | "no way to lookup Objective-C classes", 0, 0 | |
79 | }; | |
b81654f1 | 80 | |
d2e6263c MS |
81 | static struct complaint nosel_lookup_complaint = { |
82 | "no way to lookup Objective-C selectors", 0, 0 | |
83 | }; | |
b81654f1 MS |
84 | |
85 | ||
86 | #if (!defined __GNUC__ || __GNUC__ < 2 || __GNUC_MINOR__ < (defined __cplusplus ? 6 : 4)) | |
87 | #define __CHECK_FUNCTION ((__const char *) 0) | |
88 | #else | |
89 | #define __CHECK_FUNCTION __PRETTY_FUNCTION__ | |
90 | #endif | |
91 | ||
92 | #define CHECK(expression) \ | |
93 | ((void) ((expression) ? 0 : gdb_check (#expression, __FILE__, __LINE__, \ | |
94 | __CHECK_FUNCTION))) | |
95 | ||
96 | #define CHECK_FATAL(expression) \ | |
97 | ((void) ((expression) ? 0 : gdb_check_fatal (#expression, __FILE__, \ | |
98 | __LINE__, __CHECK_FUNCTION))) | |
99 | ||
d2e6263c MS |
100 | static void |
101 | gdb_check (const char *str, const char *file, | |
102 | unsigned int line, const char *func) | |
b81654f1 MS |
103 | { |
104 | error ("assertion failure on line %u of \"%s\" in function \"%s\": %s\n", | |
105 | line, file, func, str); | |
106 | } | |
107 | ||
d2e6263c MS |
108 | static void |
109 | gdb_check_fatal (const char *str, const char *file, | |
110 | unsigned int line, const char *func) | |
b81654f1 MS |
111 | { |
112 | internal_error (file, line, | |
113 | "assertion failure in function \"%s\": %s\n", func, str); | |
114 | } | |
115 | ||
d2e6263c MS |
116 | /* Lookup a structure type named "struct NAME", visible in lexical |
117 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
118 | suitably defined. */ | |
b81654f1 MS |
119 | |
120 | struct symbol * | |
121 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
122 | { | |
123 | register struct symbol *sym; | |
124 | ||
d2e6263c MS |
125 | sym = lookup_symbol (name, block, STRUCT_NAMESPACE, 0, |
126 | (struct symtab **) NULL); | |
b81654f1 MS |
127 | |
128 | if (sym == NULL) | |
129 | { | |
130 | if (noerr) | |
131 | return 0; | |
132 | else | |
133 | error ("No struct type named %s.", name); | |
134 | } | |
135 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
136 | { | |
137 | if (noerr) | |
138 | return 0; | |
139 | else | |
d2e6263c MS |
140 | error ("This context has class, union or enum %s, not a struct.", |
141 | name); | |
b81654f1 MS |
142 | } |
143 | return sym; | |
144 | } | |
145 | ||
146 | CORE_ADDR | |
147 | lookup_objc_class (char *classname) | |
148 | { | |
149 | struct value * function, *classval; | |
150 | ||
151 | if (! target_has_execution) | |
152 | { | |
d2e6263c | 153 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
154 | return 0; |
155 | } | |
156 | ||
157 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
158 | function = find_function_in_inferior("objc_lookUpClass"); | |
159 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) | |
160 | function = find_function_in_inferior("objc_lookup_class"); | |
161 | else | |
162 | { | |
163 | complain (&noclass_lookup_complaint, 0); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | classval = value_string (classname, strlen (classname) + 1); | |
168 | classval = value_coerce_array (classval); | |
169 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
170 | 1, &classval)); | |
171 | } | |
172 | ||
173 | int | |
174 | lookup_child_selector (char *selname) | |
175 | { | |
176 | struct value * function, *selstring; | |
177 | ||
178 | if (! target_has_execution) | |
179 | { | |
d2e6263c | 180 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
181 | return 0; |
182 | } | |
183 | ||
184 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
185 | function = find_function_in_inferior("sel_getUid"); | |
186 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) | |
187 | function = find_function_in_inferior("sel_get_any_uid"); | |
188 | else | |
189 | { | |
190 | complain (&nosel_lookup_complaint, 0); | |
191 | return 0; | |
192 | } | |
193 | ||
d2e6263c MS |
194 | selstring = value_coerce_array (value_string (selname, |
195 | strlen (selname) + 1)); | |
b81654f1 MS |
196 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
197 | } | |
198 | ||
199 | struct value * | |
200 | value_nsstring (char *ptr, int len) | |
201 | { | |
202 | struct value *stringValue[3]; | |
203 | struct value *function, *nsstringValue; | |
204 | struct symbol *sym; | |
205 | struct type *type; | |
206 | ||
207 | if (!target_has_execution) | |
d2e6263c | 208 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 MS |
209 | |
210 | if (!(sym = lookup_struct_typedef("NSString", 0, 1)) && | |
211 | !(sym = lookup_struct_typedef("NXString", 0, 1))) | |
212 | type = lookup_pointer_type(builtin_type_void); | |
213 | else | |
214 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
215 | ||
216 | stringValue[2] = value_string(ptr, len); | |
217 | stringValue[2] = value_coerce_array(stringValue[2]); | |
d2e6263c | 218 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
219 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
220 | { | |
221 | function = find_function_in_inferior("_NSNewStringFromCString"); | |
222 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
223 | } | |
224 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
225 | { | |
226 | function = find_function_in_inferior("istr"); | |
227 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
228 | } | |
229 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
230 | { | |
231 | function = find_function_in_inferior("+[NSString stringWithCString:]"); | |
232 | stringValue[0] = value_from_longest | |
233 | (builtin_type_long, lookup_objc_class ("NSString")); | |
234 | stringValue[1] = value_from_longest | |
235 | (builtin_type_long, lookup_child_selector ("stringWithCString:")); | |
236 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); | |
237 | } | |
238 | else | |
239 | error ("NSString: internal error -- no way to create new NSString"); | |
240 | ||
241 | VALUE_TYPE(nsstringValue) = type; | |
242 | return nsstringValue; | |
243 | } | |
244 | ||
d2e6263c | 245 | /* Objective-C name demangling. */ |
b81654f1 MS |
246 | |
247 | char * | |
248 | objc_demangle (const char *mangled) | |
249 | { | |
250 | char *demangled, *cp; | |
251 | ||
252 | if (mangled[0] == '_' && | |
253 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
254 | mangled[2] == '_') | |
255 | { | |
256 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
257 | ||
258 | if (mangled[1] == 'i') | |
259 | *cp++ = '-'; /* for instance method */ | |
260 | else | |
261 | *cp++ = '+'; /* for class method */ | |
262 | ||
263 | *cp++ = '['; /* opening left brace */ | |
264 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
265 | ||
266 | while (*cp && *cp == '_') | |
267 | cp++; /* skip any initial underbars in class name */ | |
268 | ||
269 | if (!(cp = strchr(cp, '_'))) /* find first non-initial underbar */ | |
270 | { | |
271 | free(demangled); /* not mangled name */ | |
272 | return NULL; | |
273 | } | |
274 | if (cp[1] == '_') { /* easy case: no category name */ | |
275 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
276 | strcpy(cp, mangled + (cp - demangled) + 2); | |
277 | } | |
278 | else { | |
279 | *cp++ = '('; /* less easy case: category name */ | |
280 | if (!(cp = strchr(cp, '_'))) | |
281 | { | |
282 | free(demangled); /* not mangled name */ | |
283 | return NULL; | |
284 | } | |
285 | *cp++ = ')'; | |
d2e6263c | 286 | *cp++ = ' '; /* overwriting 1st char of method name... */ |
b81654f1 MS |
287 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
288 | } | |
289 | ||
290 | while (*cp && *cp == '_') | |
291 | cp++; /* skip any initial underbars in method name */ | |
292 | ||
293 | for (; *cp; cp++) | |
294 | if (*cp == '_') | |
295 | *cp = ':'; /* replace remaining '_' with ':' */ | |
296 | ||
297 | *cp++ = ']'; /* closing right brace */ | |
298 | *cp++ = 0; /* string terminator */ | |
299 | return demangled; | |
300 | } | |
301 | else | |
d2e6263c | 302 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
303 | } |
304 | ||
d2e6263c MS |
305 | /* Print the character C on STREAM as part of the contents of a |
306 | literal string whose delimiter is QUOTER. Note that that format | |
307 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
308 | |
309 | static void | |
310 | objc_emit_char (register int c, struct ui_file *stream, int quoter) | |
311 | { | |
312 | ||
d2e6263c | 313 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
314 | |
315 | if (PRINT_LITERAL_FORM (c)) | |
316 | { | |
317 | if (c == '\\' || c == quoter) | |
318 | { | |
319 | fputs_filtered ("\\", stream); | |
320 | } | |
321 | fprintf_filtered (stream, "%c", c); | |
322 | } | |
323 | else | |
324 | { | |
325 | switch (c) | |
326 | { | |
327 | case '\n': | |
328 | fputs_filtered ("\\n", stream); | |
329 | break; | |
330 | case '\b': | |
331 | fputs_filtered ("\\b", stream); | |
332 | break; | |
333 | case '\t': | |
334 | fputs_filtered ("\\t", stream); | |
335 | break; | |
336 | case '\f': | |
337 | fputs_filtered ("\\f", stream); | |
338 | break; | |
339 | case '\r': | |
340 | fputs_filtered ("\\r", stream); | |
341 | break; | |
342 | case '\033': | |
343 | fputs_filtered ("\\e", stream); | |
344 | break; | |
345 | case '\007': | |
346 | fputs_filtered ("\\a", stream); | |
347 | break; | |
348 | default: | |
349 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
350 | break; | |
351 | } | |
352 | } | |
353 | } | |
354 | ||
355 | static void | |
356 | objc_printchar (int c, struct ui_file *stream) | |
357 | { | |
358 | fputs_filtered ("'", stream); | |
359 | objc_emit_char (c, stream, '\''); | |
360 | fputs_filtered ("'", stream); | |
361 | } | |
362 | ||
d2e6263c MS |
363 | /* Print the character string STRING, printing at most LENGTH |
364 | characters. Printing stops early if the number hits print_max; | |
365 | repeat counts are printed as appropriate. Print ellipses at the | |
366 | end if we had to stop before printing LENGTH characters, or if | |
367 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
368 | |
369 | static void | |
d2e6263c MS |
370 | objc_printstr (struct ui_file *stream, char *string, |
371 | unsigned int length, int force_ellipses) | |
b81654f1 MS |
372 | { |
373 | register unsigned int i; | |
374 | unsigned int things_printed = 0; | |
375 | int in_quotes = 0; | |
376 | int need_comma = 0; | |
377 | extern int inspect_it; | |
378 | extern int repeat_count_threshold; | |
379 | extern int print_max; | |
380 | ||
381 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
382 | the last byte of it is a null, we don't print that, in |
383 | traditional C style. */ | |
b81654f1 MS |
384 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
385 | length--; | |
386 | ||
387 | if (length == 0) | |
388 | { | |
389 | fputs_filtered ("\"\"", stream); | |
390 | return; | |
391 | } | |
392 | ||
393 | for (i = 0; i < length && things_printed < print_max; ++i) | |
394 | { | |
d2e6263c MS |
395 | /* Position of the character we are examining to see whether it |
396 | is repeated. */ | |
b81654f1 MS |
397 | unsigned int rep1; |
398 | /* Number of repetitions we have detected so far. */ | |
399 | unsigned int reps; | |
400 | ||
401 | QUIT; | |
402 | ||
403 | if (need_comma) | |
404 | { | |
405 | fputs_filtered (", ", stream); | |
406 | need_comma = 0; | |
407 | } | |
408 | ||
409 | rep1 = i + 1; | |
410 | reps = 1; | |
411 | while (rep1 < length && string[rep1] == string[i]) | |
412 | { | |
413 | ++rep1; | |
414 | ++reps; | |
415 | } | |
416 | ||
417 | if (reps > repeat_count_threshold) | |
418 | { | |
419 | if (in_quotes) | |
420 | { | |
421 | if (inspect_it) | |
422 | fputs_filtered ("\\\", ", stream); | |
423 | else | |
424 | fputs_filtered ("\", ", stream); | |
425 | in_quotes = 0; | |
426 | } | |
427 | objc_printchar (string[i], stream); | |
428 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
429 | i = rep1 - 1; | |
430 | things_printed += repeat_count_threshold; | |
431 | need_comma = 1; | |
432 | } | |
433 | else | |
434 | { | |
435 | if (!in_quotes) | |
436 | { | |
437 | if (inspect_it) | |
438 | fputs_filtered ("\\\"", stream); | |
439 | else | |
440 | fputs_filtered ("\"", stream); | |
441 | in_quotes = 1; | |
442 | } | |
443 | objc_emit_char (string[i], stream, '"'); | |
444 | ++things_printed; | |
445 | } | |
446 | } | |
447 | ||
448 | /* Terminate the quotes if necessary. */ | |
449 | if (in_quotes) | |
450 | { | |
451 | if (inspect_it) | |
452 | fputs_filtered ("\\\"", stream); | |
453 | else | |
454 | fputs_filtered ("\"", stream); | |
455 | } | |
456 | ||
457 | if (force_ellipses || i < length) | |
458 | fputs_filtered ("...", stream); | |
459 | } | |
460 | ||
d2e6263c MS |
461 | /* Create a fundamental C type using default reasonable for the |
462 | current target. | |
463 | ||
464 | Some object/debugging file formats (DWARF version 1, COFF, etc) do | |
465 | not define fundamental types such as "int" or "double". Others | |
466 | (stabs or DWARF version 2, etc) do define fundamental types. For | |
467 | the formats which don't provide fundamental types, gdb can create | |
468 | such types using this function. | |
469 | ||
470 | FIXME: Some compilers distinguish explicitly signed integral types | |
471 | (signed short, signed int, signed long) from "regular" integral | |
472 | types (short, int, long) in the debugging information. There is | |
473 | some disagreement as to how useful this feature is. In particular, | |
474 | gcc does not support this. Also, only some debugging formats allow | |
475 | the distinction to be passed on to a debugger. For now, we always | |
476 | just use "short", "int", or "long" as the type name, for both the | |
477 | implicit and explicitly signed types. This also makes life easier | |
478 | for the gdb test suite since we don't have to account for the | |
479 | differences in output depending upon what the compiler and | |
480 | debugging format support. We will probably have to re-examine the | |
481 | issue when gdb starts taking it's fundamental type information | |
482 | directly from the debugging information supplied by the compiler. | |
483 | fnf@cygnus.com */ | |
b81654f1 MS |
484 | |
485 | static struct type * | |
486 | objc_create_fundamental_type (struct objfile *objfile, int typeid) | |
487 | { | |
488 | register struct type *type = NULL; | |
489 | ||
490 | switch (typeid) | |
491 | { | |
492 | default: | |
d2e6263c MS |
493 | /* FIXME: For now, if we are asked to produce a type not in |
494 | this language, create the equivalent of a C integer type | |
495 | with the name "<?type?>". When all the dust settles from | |
496 | the type reconstruction work, this should probably become | |
497 | an error. */ | |
b81654f1 MS |
498 | type = init_type (TYPE_CODE_INT, |
499 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
500 | 0, "<?type?>", objfile); | |
501 | warning ("internal error: no C/C++ fundamental type %d", typeid); | |
502 | break; | |
503 | case FT_VOID: | |
504 | type = init_type (TYPE_CODE_VOID, | |
505 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
506 | 0, "void", objfile); | |
507 | break; | |
508 | case FT_CHAR: | |
509 | type = init_type (TYPE_CODE_INT, | |
510 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
511 | 0, "char", objfile); | |
512 | break; | |
513 | case FT_SIGNED_CHAR: | |
514 | type = init_type (TYPE_CODE_INT, | |
515 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
516 | 0, "signed char", objfile); | |
517 | break; | |
518 | case FT_UNSIGNED_CHAR: | |
519 | type = init_type (TYPE_CODE_INT, | |
520 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
521 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); | |
522 | break; | |
523 | case FT_SHORT: | |
524 | type = init_type (TYPE_CODE_INT, | |
525 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
526 | 0, "short", objfile); | |
527 | break; | |
528 | case FT_SIGNED_SHORT: | |
529 | type = init_type (TYPE_CODE_INT, | |
530 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
531 | 0, "short", objfile); /* FIXME-fnf */ | |
532 | break; | |
533 | case FT_UNSIGNED_SHORT: | |
534 | type = init_type (TYPE_CODE_INT, | |
535 | TARGET_SHORT_BIT / TARGET_CHAR_BIT, | |
536 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); | |
537 | break; | |
538 | case FT_INTEGER: | |
539 | type = init_type (TYPE_CODE_INT, | |
540 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
541 | 0, "int", objfile); | |
542 | break; | |
543 | case FT_SIGNED_INTEGER: | |
544 | type = init_type (TYPE_CODE_INT, | |
545 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
546 | 0, "int", objfile); /* FIXME -fnf */ | |
547 | break; | |
548 | case FT_UNSIGNED_INTEGER: | |
549 | type = init_type (TYPE_CODE_INT, | |
550 | TARGET_INT_BIT / TARGET_CHAR_BIT, | |
551 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); | |
552 | break; | |
553 | case FT_LONG: | |
554 | type = init_type (TYPE_CODE_INT, | |
555 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
556 | 0, "long", objfile); | |
557 | break; | |
558 | case FT_SIGNED_LONG: | |
559 | type = init_type (TYPE_CODE_INT, | |
560 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
561 | 0, "long", objfile); /* FIXME -fnf */ | |
562 | break; | |
563 | case FT_UNSIGNED_LONG: | |
564 | type = init_type (TYPE_CODE_INT, | |
565 | TARGET_LONG_BIT / TARGET_CHAR_BIT, | |
566 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); | |
567 | break; | |
568 | case FT_LONG_LONG: | |
569 | type = init_type (TYPE_CODE_INT, | |
570 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
571 | 0, "long long", objfile); | |
572 | break; | |
573 | case FT_SIGNED_LONG_LONG: | |
574 | type = init_type (TYPE_CODE_INT, | |
575 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
576 | 0, "signed long long", objfile); | |
577 | break; | |
578 | case FT_UNSIGNED_LONG_LONG: | |
579 | type = init_type (TYPE_CODE_INT, | |
580 | TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT, | |
581 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); | |
582 | break; | |
583 | case FT_FLOAT: | |
584 | type = init_type (TYPE_CODE_FLT, | |
585 | TARGET_FLOAT_BIT / TARGET_CHAR_BIT, | |
586 | 0, "float", objfile); | |
587 | break; | |
588 | case FT_DBL_PREC_FLOAT: | |
589 | type = init_type (TYPE_CODE_FLT, | |
590 | TARGET_DOUBLE_BIT / TARGET_CHAR_BIT, | |
591 | 0, "double", objfile); | |
592 | break; | |
593 | case FT_EXT_PREC_FLOAT: | |
594 | type = init_type (TYPE_CODE_FLT, | |
595 | TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT, | |
596 | 0, "long double", objfile); | |
597 | break; | |
598 | } | |
599 | return (type); | |
600 | } | |
601 | ||
602 | ||
603 | /* Table mapping opcodes into strings for printing operators | |
604 | and precedences of the operators. */ | |
605 | ||
606 | static const struct op_print objc_op_print_tab[] = | |
607 | { | |
608 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
609 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
610 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
611 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
612 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
613 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
614 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
615 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
616 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
617 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
618 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
619 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
620 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
621 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
622 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
623 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
624 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
625 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
626 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
627 | {"%", BINOP_REM, PREC_MUL, 0}, | |
628 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
629 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
630 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
631 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
632 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
633 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
634 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
635 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
636 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
637 | {NULL, 0, 0, 0} | |
638 | }; | |
639 | ||
640 | struct type ** const (objc_builtin_types[]) = | |
641 | { | |
642 | &builtin_type_int, | |
643 | &builtin_type_long, | |
644 | &builtin_type_short, | |
645 | &builtin_type_char, | |
646 | &builtin_type_float, | |
647 | &builtin_type_double, | |
648 | &builtin_type_void, | |
649 | &builtin_type_long_long, | |
650 | &builtin_type_signed_char, | |
651 | &builtin_type_unsigned_char, | |
652 | &builtin_type_unsigned_short, | |
653 | &builtin_type_unsigned_int, | |
654 | &builtin_type_unsigned_long, | |
655 | &builtin_type_unsigned_long_long, | |
656 | &builtin_type_long_double, | |
657 | &builtin_type_complex, | |
658 | &builtin_type_double_complex, | |
659 | 0 | |
660 | }; | |
661 | ||
662 | const struct language_defn objc_language_defn = { | |
d2e6263c | 663 | "objective-c", /* Language name */ |
b81654f1 MS |
664 | language_objc, |
665 | objc_builtin_types, | |
666 | range_check_off, | |
667 | type_check_off, | |
668 | case_sensitive_on, | |
669 | objc_parse, | |
670 | objc_error, | |
671 | evaluate_subexp_standard, | |
672 | objc_printchar, /* Print a character constant */ | |
673 | objc_printstr, /* Function to print string constant */ | |
674 | objc_emit_char, | |
675 | objc_create_fundamental_type, /* Create fundamental type in this language */ | |
676 | c_print_type, /* Print a type using appropriate syntax */ | |
677 | c_val_print, /* Print a value using appropriate syntax */ | |
678 | c_value_print, /* Print a top-level value */ | |
679 | {"", "", "", ""}, /* Binary format info */ | |
680 | {"0%lo", "0", "o", ""}, /* Octal format info */ | |
681 | {"%ld", "", "d", ""}, /* Decimal format info */ | |
682 | {"0x%lx", "0x", "x", ""}, /* Hex format info */ | |
d2e6263c MS |
683 | objc_op_print_tab, /* Expression operators for printing */ |
684 | 1, /* C-style arrays */ | |
b81654f1 MS |
685 | 0, /* String lower bound */ |
686 | &builtin_type_char, /* Type of string elements */ | |
687 | LANG_MAGIC | |
688 | }; | |
689 | ||
690 | /* | |
691 | * ObjC: | |
d2e6263c | 692 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
693 | */ |
694 | ||
d2e6263c | 695 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
696 | { |
697 | struct selname *next; | |
698 | char *msglist_sel; | |
699 | int msglist_len; | |
700 | }; | |
701 | ||
702 | static int msglist_len; | |
703 | static struct selname *selname_chain; | |
704 | static char *msglist_sel; | |
705 | ||
706 | void | |
707 | start_msglist(void) | |
708 | { | |
709 | register struct selname *new = | |
710 | (struct selname *) xmalloc (sizeof (struct selname)); | |
711 | ||
712 | new->next = selname_chain; | |
713 | new->msglist_len = msglist_len; | |
714 | new->msglist_sel = msglist_sel; | |
715 | msglist_len = 0; | |
716 | msglist_sel = (char *)xmalloc(1); | |
717 | *msglist_sel = 0; | |
718 | selname_chain = new; | |
719 | } | |
720 | ||
721 | void | |
722 | add_msglist(struct stoken *str, int addcolon) | |
723 | { | |
724 | char *s, *p; | |
725 | int len, plen; | |
726 | ||
d2e6263c MS |
727 | if (str == 0) { /* Unnamed arg, or... */ |
728 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
729 | msglist_len++; |
730 | return; | |
731 | } | |
732 | p = ""; | |
733 | plen = 0; | |
734 | } else { | |
735 | p = str->ptr; | |
736 | plen = str->length; | |
737 | } | |
738 | len = plen + strlen(msglist_sel) + 2; | |
739 | s = (char *)xmalloc(len); | |
740 | strcpy(s, msglist_sel); | |
741 | strncat(s, p, plen); | |
742 | free(msglist_sel); | |
743 | msglist_sel = s; | |
744 | if (addcolon) { | |
745 | s[len-2] = ':'; | |
746 | s[len-1] = 0; | |
747 | msglist_len++; | |
748 | } else | |
749 | s[len-2] = '\0'; | |
750 | } | |
751 | ||
752 | int | |
753 | end_msglist(void) | |
754 | { | |
755 | register int val = msglist_len; | |
756 | register struct selname *sel = selname_chain; | |
757 | register char *p = msglist_sel; | |
758 | int selid; | |
759 | ||
760 | selname_chain = sel->next; | |
761 | msglist_len = sel->msglist_len; | |
762 | msglist_sel = sel->msglist_sel; | |
763 | selid = lookup_child_selector(p); | |
764 | if (!selid) | |
765 | error("Can't find selector \"%s\"", p); | |
766 | write_exp_elt_longcst (selid); | |
767 | free(p); | |
d2e6263c | 768 | write_exp_elt_longcst (val); /* Number of args */ |
b81654f1 MS |
769 | free(sel); |
770 | ||
771 | return val; | |
772 | } | |
773 | ||
774 | /* | |
775 | * Function: specialcmp (char *a, char *b) | |
776 | * | |
777 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 778 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
779 | */ |
780 | ||
781 | int specialcmp(char *a, char *b) | |
782 | { | |
783 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
784 | { | |
785 | if (*a != *b) | |
786 | return *a - *b; | |
787 | a++, b++; | |
788 | } | |
789 | if (*a && *a != ' ' && *a != ']') | |
790 | return 1; /* a is longer therefore greater */ | |
791 | if (*b && *b != ' ' && *b != ']') | |
792 | return -1; /* a is shorter therefore lesser */ | |
793 | return 0; /* a and b are identical */ | |
794 | } | |
795 | ||
796 | /* | |
797 | * Function: compare_selectors (void *, void *) | |
798 | * | |
d2e6263c MS |
799 | * Comparison function for use with qsort. Arguments are symbols or |
800 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
801 | */ |
802 | ||
803 | static int | |
d2e6263c | 804 | compare_selectors (void *a, void *b) |
b81654f1 MS |
805 | { |
806 | char *aname, *bname; | |
807 | ||
808 | if ((aname = SYMBOL_SOURCE_NAME (*(struct symbol **) a)) == NULL || | |
809 | (bname = SYMBOL_SOURCE_NAME (*(struct symbol **) b)) == NULL) | |
810 | error ("internal: compare_selectors(1)"); | |
811 | ||
812 | if ((aname = strchr(aname, ' ')) == NULL || | |
813 | (bname = strchr(bname, ' ')) == NULL) | |
814 | error ("internal: compare_selectors(2)"); | |
815 | ||
816 | return specialcmp (aname+1, bname+1); | |
817 | } | |
818 | ||
819 | /* | |
820 | * Function: selectors_info (regexp, from_tty) | |
821 | * | |
d2e6263c MS |
822 | * Implements the "Info selectors" command. Takes an optional regexp |
823 | * arg. Lists all objective c selectors that match the regexp. Works | |
824 | * by grepping thru all symbols for objective c methods. Output list | |
825 | * is sorted and uniqued. | |
b81654f1 MS |
826 | */ |
827 | ||
828 | static void | |
829 | selectors_info (char *regexp, int from_tty) | |
830 | { | |
831 | struct objfile *objfile; | |
832 | struct minimal_symbol *msymbol; | |
833 | char *name; | |
834 | char *val; | |
835 | int matches = 0; | |
836 | int maxlen = 0; | |
837 | int ix; | |
838 | char myregexp[2048]; | |
839 | char asel[256]; | |
840 | struct symbol **sym_arr; | |
841 | int plusminus = 0; | |
842 | ||
843 | if (regexp == NULL) | |
d2e6263c | 844 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
845 | else |
846 | { | |
d2e6263c MS |
847 | if (*regexp == '+' || *regexp == '-') |
848 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
849 | plusminus = *regexp++; |
850 | while (*regexp == ' ' || *regexp == '\t') | |
851 | regexp++; | |
852 | } | |
853 | if (*regexp == '\0') | |
854 | strcpy(myregexp, ".*]"); | |
855 | else | |
856 | { | |
857 | strcpy(myregexp, regexp); | |
858 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
859 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
860 | else | |
861 | strcat(myregexp, ".*]"); | |
862 | } | |
863 | } | |
864 | ||
865 | if (regexp != NULL) | |
866 | if (0 != (val = re_comp (myregexp))) | |
867 | error ("Invalid regexp (%s): %s", val, regexp); | |
868 | ||
d2e6263c | 869 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
870 | ALL_MSYMBOLS (objfile, msymbol) |
871 | { | |
872 | QUIT; | |
873 | if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL) | |
874 | name = SYMBOL_NAME (msymbol); | |
875 | if (name && | |
876 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 877 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 878 | { |
d2e6263c | 879 | /* Filter for class/instance methods. */ |
b81654f1 | 880 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
881 | continue; |
882 | /* Find selector part. */ | |
883 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
884 | if (regexp == NULL || re_exec(++name) != 0) |
885 | { | |
886 | char *mystart = name; | |
887 | char *myend = (char *) strchr(mystart, ']'); | |
888 | ||
889 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 890 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
891 | matches++; |
892 | } | |
893 | } | |
894 | } | |
895 | if (matches) | |
896 | { | |
897 | printf_filtered ("Selectors matching \"%s\":\n\n", | |
898 | regexp ? regexp : "*"); | |
899 | ||
900 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
901 | matches = 0; | |
902 | ALL_MSYMBOLS (objfile, msymbol) | |
903 | { | |
904 | QUIT; | |
905 | if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL) | |
906 | name = SYMBOL_NAME (msymbol); | |
907 | if (name && | |
908 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 909 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 910 | { |
d2e6263c | 911 | /* Filter for class/instance methods. */ |
b81654f1 | 912 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
913 | continue; |
914 | /* Find selector part. */ | |
915 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
916 | if (regexp == NULL || re_exec(++name) != 0) |
917 | sym_arr[matches++] = (struct symbol *) msymbol; | |
918 | } | |
919 | } | |
920 | ||
921 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
922 | compare_selectors); | |
d2e6263c MS |
923 | /* Prevent compare on first iteration. */ |
924 | asel[0] = 0; | |
925 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
926 | { |
927 | char *p = asel; | |
928 | ||
929 | QUIT; | |
930 | if ((name = SYMBOL_DEMANGLED_NAME (sym_arr[ix])) == NULL) | |
931 | name = SYMBOL_NAME (sym_arr[ix]); | |
932 | name = strchr (name, ' ') + 1; | |
933 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 934 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 935 | |
d2e6263c MS |
936 | /* Copy selector part. */ |
937 | while (*name && *name != ']') | |
b81654f1 MS |
938 | *p++ = *name++; |
939 | *p++ = '\0'; | |
d2e6263c MS |
940 | /* Print in columns. */ |
941 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
942 | } |
943 | begin_line(); | |
944 | } | |
945 | else | |
946 | printf_filtered ("No selectors matching \"%s\"\n", regexp ? regexp : "*"); | |
947 | } | |
948 | ||
949 | /* | |
950 | * Function: compare_classes (void *, void *) | |
951 | * | |
d2e6263c MS |
952 | * Comparison function for use with qsort. Arguments are symbols or |
953 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
954 | */ |
955 | ||
956 | static int | |
d2e6263c | 957 | compare_classes (void *a, void *b) |
b81654f1 MS |
958 | { |
959 | char *aname, *bname; | |
960 | ||
961 | if ((aname = SYMBOL_SOURCE_NAME (*(struct symbol **) a)) == NULL || | |
962 | (bname = SYMBOL_SOURCE_NAME (*(struct symbol **) b)) == NULL) | |
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; | |
1012 | if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL) | |
1013 | name = SYMBOL_NAME (msymbol); | |
1014 | if (name && | |
1015 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1016 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1017 | if (regexp == NULL || re_exec(name+2) != 0) |
1018 | { | |
d2e6263c MS |
1019 | /* Compute length of classname part. */ |
1020 | char *mystart = name + 2; | |
b81654f1 MS |
1021 | char *myend = (char *) strchr(mystart, ' '); |
1022 | ||
1023 | if (myend && (myend - mystart > maxlen)) | |
1024 | maxlen = myend - mystart; | |
1025 | matches++; | |
1026 | } | |
1027 | } | |
1028 | if (matches) | |
1029 | { | |
1030 | printf_filtered ("Classes matching \"%s\":\n\n", | |
1031 | regexp ? regexp : "*"); | |
1032 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
1033 | matches = 0; | |
1034 | ALL_MSYMBOLS (objfile, msymbol) | |
1035 | { | |
1036 | QUIT; | |
1037 | if ((name = SYMBOL_DEMANGLED_NAME (msymbol)) == NULL) | |
1038 | name = SYMBOL_NAME (msymbol); | |
1039 | if (name && | |
1040 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1041 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1042 | if (regexp == NULL || re_exec(name+2) != 0) |
1043 | sym_arr[matches++] = (struct symbol *) msymbol; | |
1044 | } | |
1045 | ||
1046 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
1047 | compare_classes); | |
d2e6263c MS |
1048 | /* Prevent compare on first iteration. */ |
1049 | aclass[0] = 0; | |
1050 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
1051 | { |
1052 | char *p = aclass; | |
1053 | ||
1054 | QUIT; | |
1055 | if ((name = SYMBOL_DEMANGLED_NAME (sym_arr[ix])) == NULL) | |
1056 | name = SYMBOL_NAME (sym_arr[ix]); | |
1057 | name += 2; | |
1058 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 1059 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 1060 | |
d2e6263c MS |
1061 | /* Copy class part of method name. */ |
1062 | while (*name && *name != ' ') | |
b81654f1 MS |
1063 | *p++ = *name++; |
1064 | *p++ = '\0'; | |
d2e6263c MS |
1065 | /* Print in columns. */ |
1066 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
1067 | } |
1068 | begin_line(); | |
1069 | } | |
1070 | else | |
1071 | printf_filtered ("No classes matching \"%s\"\n", regexp ? regexp : "*"); | |
1072 | } | |
1073 | ||
1074 | /* | |
1075 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
1076 | * | |
1077 | * Input: a string representing a selector | |
1078 | * a pointer to an array of symbol pointers | |
1079 | * possibly a pointer to a symbol found by the caller. | |
1080 | * | |
d2e6263c MS |
1081 | * Output: number of methods that implement that selector. Side |
1082 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 1083 | * |
d2e6263c MS |
1084 | * By analogy with function "find_methods" (symtab.c), builds a list |
1085 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1086 | * (symtab.c) can list them and ask the user to choose one or more. | |
1087 | * In this case the matches are objective c methods | |
1088 | * ("implementations") matching an objective c selector. | |
b81654f1 | 1089 | * |
d2e6263c MS |
1090 | * Note that it is possible for a normal (c-style) function to have |
1091 | * the same name as an objective c selector. To prevent the selector | |
1092 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1093 | * search for such a function first, and if it finds one, pass it in | |
1094 | * to us. We will then integrate it into the list. We also search | |
1095 | * for one here, among the minsyms. | |
b81654f1 | 1096 | * |
d2e6263c MS |
1097 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
1098 | * into two parts: debuggable (struct symbol) syms, and | |
1099 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1100 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1101 | * be the index of the first non-debuggable one). | |
b81654f1 MS |
1102 | */ |
1103 | ||
1104 | /* | |
1105 | * Function: total_number_of_imps (char *selector); | |
1106 | * | |
1107 | * Input: a string representing a selector | |
1108 | * Output: number of methods that implement that selector. | |
1109 | * | |
d2e6263c | 1110 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 1111 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
1112 | * matching the input, and to allocate an array of pointers to them |
1113 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
1114 | */ |
1115 | ||
1116 | char * | |
1117 | parse_selector (char *method, char **selector) | |
1118 | { | |
1119 | char *s1 = NULL; | |
1120 | char *s2 = NULL; | |
1121 | int found_quote = 0; | |
1122 | ||
1123 | char *nselector = NULL; | |
1124 | ||
1125 | CHECK (selector != NULL); | |
1126 | ||
1127 | s1 = method; | |
1128 | ||
1129 | while (isspace (*s1)) | |
1130 | s1++; | |
1131 | if (*s1 == '\'') | |
1132 | { | |
1133 | found_quote = 1; | |
1134 | s1++; | |
1135 | } | |
1136 | while (isspace (*s1)) | |
1137 | s1++; | |
1138 | ||
1139 | nselector = s1; | |
1140 | s2 = s1; | |
1141 | ||
1142 | for (;;) { | |
1143 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1144 | *s1++ = *s2; | |
1145 | else if (isspace (*s2)) | |
1146 | ; | |
1147 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1148 | break; | |
1149 | else | |
1150 | return NULL; | |
1151 | s2++; | |
1152 | } | |
1153 | *s1++ = '\0'; | |
1154 | ||
1155 | while (isspace (*s2)) | |
1156 | s2++; | |
1157 | if (found_quote) | |
1158 | { | |
1159 | if (*s2 == '\'') | |
1160 | s2++; | |
1161 | while (isspace (*s2)) | |
1162 | s2++; | |
1163 | } | |
1164 | ||
1165 | if (selector != NULL) | |
1166 | *selector = nselector; | |
1167 | ||
1168 | return s2; | |
1169 | } | |
1170 | ||
1171 | char * | |
d2e6263c MS |
1172 | parse_method (char *method, char *type, char **class, |
1173 | char **category, char **selector) | |
b81654f1 MS |
1174 | { |
1175 | char *s1 = NULL; | |
1176 | char *s2 = NULL; | |
1177 | int found_quote = 0; | |
1178 | ||
1179 | char ntype = '\0'; | |
1180 | char *nclass = NULL; | |
1181 | char *ncategory = NULL; | |
1182 | char *nselector = NULL; | |
1183 | ||
1184 | CHECK (type != NULL); | |
1185 | CHECK (class != NULL); | |
1186 | CHECK (category != NULL); | |
1187 | CHECK (selector != NULL); | |
1188 | ||
1189 | s1 = method; | |
1190 | ||
1191 | while (isspace (*s1)) | |
1192 | s1++; | |
1193 | if (*s1 == '\'') | |
1194 | { | |
1195 | found_quote = 1; | |
1196 | s1++; | |
1197 | } | |
1198 | while (isspace (*s1)) | |
1199 | s1++; | |
1200 | ||
1201 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1202 | ntype = *s1++; | |
1203 | ||
1204 | while (isspace (*s1)) | |
1205 | s1++; | |
1206 | ||
1207 | if (*s1 != '[') | |
1208 | return NULL; | |
1209 | s1++; | |
1210 | ||
1211 | nclass = s1; | |
1212 | while (isalnum (*s1) || (*s1 == '_')) | |
1213 | s1++; | |
1214 | ||
1215 | s2 = s1; | |
1216 | while (isspace (*s2)) | |
1217 | s2++; | |
1218 | ||
1219 | if (*s2 == '(') | |
1220 | { | |
1221 | s2++; | |
1222 | while (isspace (*s2)) | |
1223 | s2++; | |
1224 | ncategory = s2; | |
1225 | while (isalnum (*s2) || (*s2 == '_')) | |
1226 | s2++; | |
1227 | *s2++ = '\0'; | |
1228 | } | |
1229 | ||
d2e6263c | 1230 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1231 | *s1++ = '\0'; |
1232 | ||
1233 | nselector = s2; | |
1234 | s1 = s2; | |
1235 | ||
1236 | for (;;) { | |
1237 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1238 | *s1++ = *s2; | |
1239 | else if (isspace (*s2)) | |
1240 | ; | |
1241 | else if (*s2 == ']') | |
1242 | break; | |
1243 | else | |
1244 | return NULL; | |
1245 | s2++; | |
1246 | } | |
1247 | *s1++ = '\0'; | |
1248 | s2++; | |
1249 | ||
1250 | while (isspace (*s2)) | |
1251 | s2++; | |
1252 | if (found_quote) | |
1253 | { | |
1254 | if (*s2 != '\'') | |
1255 | return NULL; | |
1256 | s2++; | |
1257 | while (isspace (*s2)) | |
1258 | s2++; | |
1259 | } | |
1260 | ||
1261 | if (type != NULL) | |
1262 | *type = ntype; | |
1263 | if (class != NULL) | |
1264 | *class = nclass; | |
1265 | if (category != NULL) | |
1266 | *category = ncategory; | |
1267 | if (selector != NULL) | |
1268 | *selector = nselector; | |
1269 | ||
1270 | return s2; | |
1271 | } | |
1272 | ||
1273 | void | |
d2e6263c MS |
1274 | find_methods (struct symtab *symtab, char type, |
1275 | const char *class, const char *category, | |
1276 | const char *selector, struct symbol **syms, | |
1277 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1278 | { |
1279 | struct objfile *objfile = NULL; | |
1280 | struct minimal_symbol *msymbol = NULL; | |
1281 | struct block *block = NULL; | |
1282 | struct symbol *sym = NULL; | |
1283 | ||
1284 | char *symname = NULL; | |
1285 | ||
1286 | char ntype = '\0'; | |
1287 | char *nclass = NULL; | |
1288 | char *ncategory = NULL; | |
1289 | char *nselector = NULL; | |
1290 | ||
1291 | unsigned int csym = 0; | |
1292 | unsigned int cdebug = 0; | |
1293 | ||
1294 | static char *tmp = NULL; | |
1295 | static unsigned int tmplen = 0; | |
1296 | ||
1297 | CHECK (nsym != NULL); | |
1298 | CHECK (ndebug != NULL); | |
1299 | ||
1300 | if (symtab) | |
1301 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1302 | ||
1303 | ALL_MSYMBOLS (objfile, msymbol) | |
1304 | { | |
1305 | QUIT; | |
1306 | ||
1307 | if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text)) | |
d2e6263c | 1308 | /* Not a function or method. */ |
b81654f1 MS |
1309 | continue; |
1310 | ||
1311 | if (symtab) | |
1312 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < block->startaddr) || | |
1313 | (SYMBOL_VALUE_ADDRESS (msymbol) >= block->endaddr)) | |
d2e6263c | 1314 | /* Not in the specified symtab. */ |
b81654f1 MS |
1315 | continue; |
1316 | ||
1317 | symname = SYMBOL_DEMANGLED_NAME (msymbol); | |
1318 | if (symname == NULL) | |
1319 | symname = SYMBOL_NAME (msymbol); | |
1320 | if (symname == NULL) | |
1321 | continue; | |
1322 | ||
1323 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
d2e6263c | 1324 | /* Not a method name. */ |
b81654f1 MS |
1325 | continue; |
1326 | ||
1327 | while ((strlen (symname) + 1) >= tmplen) | |
1328 | { | |
1329 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1330 | tmp = xrealloc (tmp, tmplen); | |
1331 | } | |
1332 | strcpy (tmp, symname); | |
1333 | ||
1334 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1335 | continue; | |
1336 | ||
1337 | if ((type != '\0') && (ntype != type)) | |
1338 | continue; | |
1339 | ||
d2e6263c MS |
1340 | if ((class != NULL) |
1341 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
b81654f1 MS |
1342 | continue; |
1343 | ||
d2e6263c MS |
1344 | if ((category != NULL) && |
1345 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
b81654f1 MS |
1346 | continue; |
1347 | ||
d2e6263c MS |
1348 | if ((selector != NULL) && |
1349 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
b81654f1 MS |
1350 | continue; |
1351 | ||
1352 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1353 | if (sym != NULL) | |
1354 | { | |
1355 | const char *newsymname = SYMBOL_DEMANGLED_NAME (sym); | |
1356 | ||
1357 | if (newsymname == NULL) | |
1358 | newsymname = SYMBOL_NAME (sym); | |
1359 | if (strcmp (symname, newsymname) == 0) | |
1360 | { | |
d2e6263c MS |
1361 | /* Found a high-level method sym: swap it into the |
1362 | lower part of sym_arr (below num_debuggable). */ | |
b81654f1 MS |
1363 | if (syms != NULL) |
1364 | { | |
1365 | syms[csym] = syms[cdebug]; | |
1366 | syms[cdebug] = sym; | |
1367 | } | |
1368 | csym++; | |
1369 | cdebug++; | |
1370 | } | |
1371 | else | |
1372 | { | |
d2e6263c MS |
1373 | warning ( |
1374 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
b81654f1 MS |
1375 | newsymname, symname); |
1376 | if (syms != NULL) | |
1377 | syms[csym] = (struct symbol *) msymbol; | |
1378 | csym++; | |
1379 | } | |
1380 | } | |
1381 | else | |
1382 | { | |
d2e6263c | 1383 | /* Found a non-debuggable method symbol. */ |
b81654f1 MS |
1384 | if (syms != NULL) |
1385 | syms[csym] = (struct symbol *) msymbol; | |
1386 | csym++; | |
1387 | } | |
1388 | } | |
1389 | ||
1390 | if (nsym != NULL) | |
1391 | *nsym = csym; | |
1392 | if (ndebug != NULL) | |
1393 | *ndebug = cdebug; | |
1394 | } | |
1395 | ||
1396 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1397 | char *method, struct symbol **syms, |
1398 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1399 | { |
1400 | char type = '\0'; | |
1401 | char *class = NULL; | |
1402 | char *category = NULL; | |
1403 | char *selector = NULL; | |
1404 | ||
1405 | unsigned int csym = 0; | |
1406 | unsigned int cdebug = 0; | |
1407 | ||
1408 | unsigned int ncsym = 0; | |
1409 | unsigned int ncdebug = 0; | |
1410 | ||
1411 | char *buf = NULL; | |
1412 | char *tmp = NULL; | |
1413 | ||
1414 | CHECK (nsym != NULL); | |
1415 | CHECK (ndebug != NULL); | |
1416 | ||
1417 | if (nsym != NULL) | |
1418 | *nsym = 0; | |
1419 | if (ndebug != NULL) | |
1420 | *ndebug = 0; | |
1421 | ||
1422 | buf = (char *) alloca (strlen (method) + 1); | |
1423 | strcpy (buf, method); | |
1424 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1425 | ||
1426 | if (tmp == NULL) { | |
1427 | ||
1428 | struct symtab *sym_symtab = NULL; | |
1429 | struct symbol *sym = NULL; | |
1430 | struct minimal_symbol *msym = NULL; | |
1431 | ||
1432 | strcpy (buf, method); | |
1433 | tmp = parse_selector (buf, &selector); | |
1434 | ||
1435 | if (tmp == NULL) | |
1436 | return NULL; | |
1437 | ||
1438 | sym = lookup_symbol (selector, block, VAR_NAMESPACE, 0, &sym_symtab); | |
1439 | if (sym != NULL) | |
1440 | { | |
1441 | if (syms) | |
1442 | syms[csym] = sym; | |
1443 | csym++; | |
1444 | cdebug++; | |
1445 | } | |
1446 | ||
1447 | if (sym == NULL) | |
1448 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1449 | ||
1450 | if (msym != NULL) | |
1451 | { | |
1452 | if (syms) | |
1453 | syms[csym] = msym; | |
1454 | csym++; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | if (syms != NULL) | |
d2e6263c MS |
1459 | find_methods (symtab, type, class, category, selector, |
1460 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1461 | else |
d2e6263c MS |
1462 | find_methods (symtab, type, class, category, selector, |
1463 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1464 | |
d2e6263c | 1465 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1466 | if (ncsym == 0 && ncdebug == 0) |
1467 | return method; | |
1468 | ||
1469 | /* Take debug symbols from the second batch of symbols and swap them | |
1470 | * with debug symbols from the first batch. Repeat until either the | |
1471 | * second section is out of debug symbols or the first section is | |
1472 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1473 | * packed to the beginning of the buffer. |
1474 | */ | |
b81654f1 MS |
1475 | |
1476 | if (syms != NULL) | |
1477 | { | |
1478 | while ((cdebug < csym) && (ncdebug > 0)) | |
1479 | { | |
1480 | struct symbol *s = NULL; | |
d2e6263c MS |
1481 | /* First non-debugging symbol. */ |
1482 | unsigned int i = cdebug; | |
1483 | /* Last of second batch of debug symbols. */ | |
1484 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1485 | |
1486 | s = syms[j]; | |
1487 | syms[j] = syms[i]; | |
1488 | syms[i] = s; | |
1489 | ||
d2e6263c MS |
1490 | /* We've moved a symbol from the second debug section to the |
1491 | first one. */ | |
b81654f1 MS |
1492 | cdebug++; |
1493 | ncdebug--; | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | csym += ncsym; | |
1498 | cdebug += ncdebug; | |
1499 | ||
1500 | if (nsym != NULL) | |
1501 | *nsym = csym; | |
1502 | if (ndebug != NULL) | |
1503 | *ndebug = cdebug; | |
1504 | ||
1505 | if (syms == NULL) | |
1506 | return method + (tmp - buf); | |
1507 | ||
1508 | if (csym > 1) | |
1509 | { | |
d2e6263c | 1510 | /* Sort debuggable symbols. */ |
b81654f1 | 1511 | if (cdebug > 1) |
d2e6263c MS |
1512 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1513 | compare_classes); | |
b81654f1 | 1514 | |
d2e6263c | 1515 | /* Sort minimal_symbols. */ |
b81654f1 | 1516 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1517 | qsort (&syms[cdebug], csym - cdebug, |
1518 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1519 | } |
d2e6263c MS |
1520 | /* Terminate the sym_arr list. */ |
1521 | syms[csym] = 0; | |
b81654f1 MS |
1522 | |
1523 | return method + (tmp - buf); | |
1524 | } | |
1525 | ||
1526 | void | |
1527 | print_object_command (char *args, int from_tty) | |
1528 | { | |
1529 | struct value *object, *function, *description; | |
1530 | CORE_ADDR string_addr; | |
1531 | int i = 0; | |
1532 | char c = -1; | |
1533 | ||
1534 | if (!args || !*args) | |
d2e6263c MS |
1535 | error ( |
1536 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1537 | |
1538 | { | |
1539 | struct expression *expr = parse_expression (args); | |
d2e6263c MS |
1540 | register struct cleanup *old_chain = |
1541 | make_cleanup (free_current_contents, &expr); | |
b81654f1 MS |
1542 | int pc = 0; |
1543 | ||
1544 | #if 1 | |
1545 | object = expr->language_defn->evaluate_exp (builtin_type_void_data_ptr, | |
1546 | expr, &pc, EVAL_NORMAL); | |
1547 | #else | |
d2e6263c MS |
1548 | object = evaluate_subexp (builtin_type_void_data_ptr, |
1549 | expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1550 | #endif |
1551 | do_cleanups (old_chain); | |
1552 | } | |
1553 | ||
1554 | if (!(function = find_function_in_inferior ("_NSPrintForDebugger"))) | |
1555 | error ("Unable to locate _NSPrintForDebugger in child process"); | |
1556 | ||
1557 | description = call_function_by_hand (function, 1, &object); | |
1558 | ||
1559 | if ((string_addr = value_as_long (description)) == 0) | |
1560 | error ("object returns null description"); | |
1561 | ||
1562 | read_memory (string_addr + i++, &c, 1); | |
1563 | if (c != '\0') | |
1564 | do | |
d2e6263c | 1565 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1566 | QUIT; |
1567 | printf_filtered ("%c", c); | |
1568 | read_memory (string_addr + i++, &c, 1); | |
1569 | } while (c != 0); | |
1570 | else | |
1571 | printf_filtered("<object returns empty description>"); | |
1572 | printf_filtered ("\n"); | |
1573 | } | |
1574 | ||
d2e6263c MS |
1575 | /* The data structure 'methcalls' is used to detect method calls (thru |
1576 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1577 | * and ultimately find the method being called. | |
b81654f1 MS |
1578 | */ |
1579 | ||
1580 | struct objc_methcall { | |
1581 | char *name; | |
d2e6263c MS |
1582 | /* Return instance method to be called. */ |
1583 | CORE_ADDR (*stop_at) (CORE_ADDR); | |
1584 | /* Start of pc range corresponding to method invocation. */ | |
1585 | CORE_ADDR begin; | |
1586 | /* End of pc range corresponding to method invocation. */ | |
1587 | CORE_ADDR end; | |
b81654f1 MS |
1588 | }; |
1589 | ||
d2e6263c MS |
1590 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1591 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1592 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1593 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1594 | |
1595 | static struct objc_methcall methcalls[] = { | |
1596 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1597 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1598 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1599 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1600 | { "_objc_getClass", NULL, 0, 0}, | |
1601 | { "_objc_getMetaClass", NULL, 0, 0} | |
1602 | }; | |
1603 | ||
1604 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1605 | ||
d2e6263c MS |
1606 | /* The following function, "find_objc_msgsend", fills in the data |
1607 | * structure "objc_msgs" by finding the addresses of each of the | |
1608 | * (currently four) functions that it holds (of which objc_msgSend is | |
1609 | * the first). This must be called each time symbols are loaded, in | |
1610 | * case the functions have moved for some reason. | |
b81654f1 MS |
1611 | */ |
1612 | ||
1613 | void | |
1614 | find_objc_msgsend (void) | |
1615 | { | |
1616 | unsigned int i; | |
1617 | for (i = 0; i < nmethcalls; i++) { | |
1618 | ||
1619 | struct minimal_symbol *func; | |
1620 | ||
d2e6263c | 1621 | /* Try both with and without underscore. */ |
b81654f1 MS |
1622 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1623 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1624 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1625 | } | |
1626 | if (func == NULL) { | |
1627 | methcalls[i].begin = 0; | |
1628 | methcalls[i].end = 0; | |
1629 | continue; | |
1630 | } | |
1631 | ||
1632 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1633 | do { | |
1634 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1635 | } while (methcalls[i].begin == methcalls[i].end); | |
1636 | } | |
1637 | } | |
1638 | ||
1639 | /* find_objc_msgcall (replaces pc_off_limits) | |
1640 | * | |
d2e6263c MS |
1641 | * ALL that this function now does is to determine whether the input |
1642 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1643 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1644 | * if so, it returns the address of the method that will be called. | |
1645 | * | |
1646 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1647 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1648 | * returning the address of the shlib function that would be called. |
d2e6263c MS |
1649 | * That functionality has been moved into the SKIP_TRAMPOLINE_CODE and |
1650 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- | |
1651 | * dependent modules. | |
b81654f1 MS |
1652 | */ |
1653 | ||
1654 | struct objc_submethod_helper_data { | |
1655 | CORE_ADDR (*f) (CORE_ADDR, CORE_ADDR *); | |
1656 | CORE_ADDR pc; | |
1657 | CORE_ADDR *new_pc; | |
1658 | }; | |
1659 | ||
1660 | int | |
1661 | find_objc_msgcall_submethod_helper (PTR arg) | |
1662 | { | |
d2e6263c MS |
1663 | struct objc_submethod_helper_data *s = |
1664 | (struct objc_submethod_helper_data *) arg; | |
1665 | ||
1666 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1667 | return 1; |
d2e6263c | 1668 | else |
b81654f1 | 1669 | return 0; |
b81654f1 MS |
1670 | } |
1671 | ||
1672 | int | |
d2e6263c MS |
1673 | find_objc_msgcall_submethod (CORE_ADDR (*f) (CORE_ADDR, CORE_ADDR *), |
1674 | CORE_ADDR pc, | |
1675 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1676 | { |
1677 | struct objc_submethod_helper_data s; | |
1678 | ||
1679 | s.f = f; | |
1680 | s.pc = pc; | |
1681 | s.new_pc = new_pc; | |
1682 | ||
1683 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
d2e6263c MS |
1684 | (PTR) &s, |
1685 | "Unable to determine target of Objective-C method call (ignoring):\n", | |
1686 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1687 | return 1; |
d2e6263c | 1688 | else |
b81654f1 | 1689 | return 0; |
b81654f1 MS |
1690 | } |
1691 | ||
1692 | int | |
1693 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1694 | { | |
1695 | unsigned int i; | |
1696 | ||
1697 | find_objc_msgsend (); | |
1698 | if (new_pc != NULL) { *new_pc = 0; } | |
1699 | ||
d2e6263c MS |
1700 | for (i = 0; i < nmethcalls; i++) |
1701 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1702 | { | |
1703 | if (methcalls[i].stop_at != NULL) | |
1704 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1705 | pc, new_pc); | |
1706 | else | |
1707 | return 0; | |
b81654f1 | 1708 | } |
d2e6263c | 1709 | |
b81654f1 MS |
1710 | return 0; |
1711 | } | |
1712 | ||
1713 | void | |
1714 | _initialize_objc_language (void) | |
1715 | { | |
1716 | add_language (&objc_language_defn); | |
d2e6263c MS |
1717 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1718 | "All Objective-C selectors, or those matching REGEXP."); | |
1719 | add_info ("classes", classes_info, /* INFO CLASSES command. */ | |
1720 | "All Objective-C classes, or those matching REGEXP."); | |
b81654f1 MS |
1721 | add_com ("print-object", class_vars, print_object_command, |
1722 | "Ask an Objective-C object to print itself.\n"); | |
1723 | add_com_alias ("po", "print-object", class_vars, 1); | |
1724 | } | |
1725 | ||
1726 | #if defined (__powerpc__) || defined (__ppc__) | |
1727 | static unsigned long FETCH_ARGUMENT (int i) | |
1728 | { | |
1729 | return read_register (3 + i); | |
1730 | } | |
1731 | #elif defined (__i386__) | |
1732 | static unsigned long FETCH_ARGUMENT (int i) | |
1733 | { | |
1734 | CORE_ADDR stack = read_register (SP_REGNUM); | |
1735 | return read_memory_unsigned_integer (stack + (4 * (i + 1)), 4); | |
1736 | } | |
1737 | #elif defined (__sparc__) | |
1738 | static unsigned long FETCH_ARGUMENT (int i) | |
1739 | { | |
1740 | return read_register (O0_REGNUM + i); | |
1741 | } | |
1742 | #elif defined (__hppa__) || defined (__hppa) | |
1743 | static unsigned long FETCH_ARGUMENT (int i) | |
1744 | { | |
1745 | return read_register (R0_REGNUM + 26 - i); | |
1746 | } | |
1747 | #else | |
1748 | #error unknown architecture | |
1749 | #endif | |
1750 | ||
1751 | #if defined (__hppa__) || defined (__hppa) | |
1752 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1753 | { | |
d2e6263c | 1754 | if (pc & 0x2) |
b81654f1 | 1755 | pc = (CORE_ADDR) read_memory_integer (pc & ~0x3, 4); |
d2e6263c | 1756 | |
b81654f1 MS |
1757 | return pc; |
1758 | } | |
1759 | #else | |
1760 | static CORE_ADDR CONVERT_FUNCPTR (CORE_ADDR pc) | |
1761 | { | |
1762 | return pc; | |
1763 | } | |
1764 | #endif | |
1765 | ||
1766 | static void | |
1767 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1768 | { | |
d2e6263c | 1769 | method->name = read_memory_unsigned_integer (addr + 0, 4); |
b81654f1 | 1770 | method->types = read_memory_unsigned_integer (addr + 4, 4); |
d2e6263c | 1771 | method->imp = read_memory_unsigned_integer (addr + 8, 4); |
b81654f1 MS |
1772 | } |
1773 | ||
1774 | static | |
1775 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1776 | { | |
1777 | return read_memory_unsigned_integer (addr + 4, 4); | |
1778 | } | |
1779 | ||
1780 | static void | |
1781 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1782 | struct objc_method *method) | |
1783 | { | |
1784 | CHECK_FATAL (num < read_objc_methlist_nmethods (addr)); | |
1785 | read_objc_method (addr + 8 + (12 * num), method); | |
1786 | } | |
1787 | ||
1788 | static void | |
1789 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1790 | { | |
1791 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1792 | } | |
1793 | ||
1794 | static void | |
1795 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1796 | { | |
1797 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1798 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1799 | }; | |
1800 | ||
1801 | static void | |
1802 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1803 | { | |
1804 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1805 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1806 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1807 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1808 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1809 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1810 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1811 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1812 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1813 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1814 | } | |
1815 | ||
1816 | CORE_ADDR | |
1817 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) | |
1818 | { | |
1819 | CORE_ADDR subclass = class; | |
1820 | ||
d2e6263c MS |
1821 | while (subclass != 0) |
1822 | { | |
b81654f1 | 1823 | |
d2e6263c MS |
1824 | struct objc_class class_str; |
1825 | unsigned mlistnum = 0; | |
b81654f1 | 1826 | |
d2e6263c | 1827 | read_objc_class (subclass, &class_str); |
b81654f1 | 1828 | |
d2e6263c MS |
1829 | for (;;) |
1830 | { | |
1831 | CORE_ADDR mlist; | |
1832 | unsigned long nmethods; | |
1833 | unsigned long i; | |
b81654f1 | 1834 | |
d2e6263c MS |
1835 | mlist = read_memory_unsigned_integer (class_str.methods + |
1836 | (4 * mlistnum), 4); | |
1837 | if (mlist == 0) | |
1838 | break; | |
b81654f1 | 1839 | |
d2e6263c | 1840 | nmethods = read_objc_methlist_nmethods (mlist); |
b81654f1 | 1841 | |
d2e6263c MS |
1842 | for (i = 0; i < nmethods; i++) |
1843 | { | |
1844 | struct objc_method meth_str; | |
1845 | read_objc_methlist_method (mlist, i, &meth_str); | |
b81654f1 MS |
1846 | |
1847 | #if 0 | |
d2e6263c MS |
1848 | fprintf (stderr, |
1849 | "checking method 0x%lx against selector 0x%lx\n", | |
1850 | meth_str.name, sel); | |
b81654f1 MS |
1851 | #endif |
1852 | ||
d2e6263c MS |
1853 | if (meth_str.name == sel) |
1854 | return CONVERT_FUNCPTR (meth_str.imp); | |
1855 | } | |
1856 | mlistnum++; | |
b81654f1 | 1857 | } |
d2e6263c | 1858 | subclass = class_str.super_class; |
b81654f1 | 1859 | } |
b81654f1 MS |
1860 | |
1861 | return 0; | |
1862 | } | |
1863 | ||
1864 | CORE_ADDR | |
1865 | find_implementation (CORE_ADDR object, CORE_ADDR sel) | |
1866 | { | |
1867 | struct objc_object ostr; | |
1868 | ||
d2e6263c MS |
1869 | if (object == 0) |
1870 | return 0; | |
b81654f1 | 1871 | read_objc_object (object, &ostr); |
d2e6263c MS |
1872 | if (ostr.isa == 0) |
1873 | return 0; | |
b81654f1 MS |
1874 | |
1875 | return find_implementation_from_class (ostr.isa, sel); | |
1876 | } | |
1877 | ||
1878 | static int | |
1879 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1880 | { | |
1881 | CORE_ADDR object; | |
1882 | CORE_ADDR sel; | |
1883 | CORE_ADDR res; | |
1884 | ||
1885 | object = FETCH_ARGUMENT (0); | |
1886 | sel = FETCH_ARGUMENT (1); | |
1887 | ||
1888 | res = find_implementation (object, sel); | |
d2e6263c MS |
1889 | if (new_pc != 0) |
1890 | *new_pc = res; | |
1891 | if (res == 0) | |
1892 | return 1; | |
b81654f1 MS |
1893 | return 0; |
1894 | } | |
1895 | ||
1896 | static int | |
1897 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1898 | { | |
1899 | CORE_ADDR object; | |
1900 | CORE_ADDR sel; | |
1901 | CORE_ADDR res; | |
1902 | ||
1903 | object = FETCH_ARGUMENT (1); | |
1904 | sel = FETCH_ARGUMENT (2); | |
1905 | ||
1906 | res = find_implementation (object, sel); | |
d2e6263c MS |
1907 | if (new_pc != 0) |
1908 | *new_pc = res; | |
1909 | if (res == 0) | |
1910 | return 1; | |
b81654f1 MS |
1911 | return 0; |
1912 | } | |
1913 | ||
1914 | static int | |
1915 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1916 | { | |
1917 | struct objc_super sstr; | |
1918 | ||
1919 | CORE_ADDR super; | |
1920 | CORE_ADDR sel; | |
1921 | CORE_ADDR res; | |
1922 | ||
1923 | super = FETCH_ARGUMENT (0); | |
1924 | sel = FETCH_ARGUMENT (1); | |
1925 | ||
1926 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1927 | if (sstr.class == 0) |
1928 | return 0; | |
b81654f1 MS |
1929 | |
1930 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1931 | if (new_pc != 0) |
1932 | *new_pc = res; | |
1933 | if (res == 0) | |
1934 | return 1; | |
b81654f1 MS |
1935 | return 0; |
1936 | } | |
1937 | ||
1938 | static int | |
1939 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1940 | { | |
1941 | struct objc_super sstr; | |
1942 | ||
1943 | CORE_ADDR super; | |
1944 | CORE_ADDR sel; | |
1945 | CORE_ADDR res; | |
1946 | ||
1947 | super = FETCH_ARGUMENT (1); | |
1948 | sel = FETCH_ARGUMENT (2); | |
1949 | ||
1950 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1951 | if (sstr.class == 0) |
1952 | return 0; | |
b81654f1 MS |
1953 | |
1954 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1955 | if (new_pc != 0) |
1956 | *new_pc = res; | |
1957 | if (res == 0) | |
1958 | return 1; | |
b81654f1 MS |
1959 | return 0; |
1960 | } |