Commit | Line | Data |
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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
6aba47ca | 3 | Copyright (C) 2002, 2003, 2004, 2005, 2007 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 | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
437666f8 AC |
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 | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
b81654f1 MS |
22 | |
23 | #include "defs.h" | |
24 | #include "symtab.h" | |
25 | #include "gdbtypes.h" | |
26 | #include "expression.h" | |
27 | #include "parser-defs.h" | |
28 | #include "language.h" | |
d2e6263c | 29 | #include "c-lang.h" |
b81654f1 | 30 | #include "objc-lang.h" |
60250e8b | 31 | #include "exceptions.h" |
b81654f1 MS |
32 | #include "complaints.h" |
33 | #include "value.h" | |
34 | #include "symfile.h" | |
35 | #include "objfiles.h" | |
7248f48e | 36 | #include "gdb_string.h" /* for strchr */ |
b81654f1 MS |
37 | #include "target.h" /* for target_has_execution */ |
38 | #include "gdbcore.h" | |
39 | #include "gdbcmd.h" | |
40 | #include "frame.h" | |
41 | #include "gdb_regex.h" | |
42 | #include "regcache.h" | |
fe898f56 | 43 | #include "block.h" |
04714b91 | 44 | #include "infcall.h" |
4e45ca2e | 45 | #include "valprint.h" |
e8f3fcdd | 46 | #include "gdb_assert.h" |
b81654f1 MS |
47 | |
48 | #include <ctype.h> | |
49 | ||
50 | struct objc_object { | |
51 | CORE_ADDR isa; | |
52 | }; | |
53 | ||
54 | struct objc_class { | |
55 | CORE_ADDR isa; | |
56 | CORE_ADDR super_class; | |
57 | CORE_ADDR name; | |
58 | long version; | |
59 | long info; | |
60 | long instance_size; | |
61 | CORE_ADDR ivars; | |
62 | CORE_ADDR methods; | |
63 | CORE_ADDR cache; | |
64 | CORE_ADDR protocols; | |
65 | }; | |
66 | ||
67 | struct objc_super { | |
68 | CORE_ADDR receiver; | |
69 | CORE_ADDR class; | |
70 | }; | |
71 | ||
72 | struct objc_method { | |
73 | CORE_ADDR name; | |
74 | CORE_ADDR types; | |
75 | CORE_ADDR imp; | |
76 | }; | |
77 | ||
d2e6263c MS |
78 | /* Lookup a structure type named "struct NAME", visible in lexical |
79 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
80 | suitably defined. */ | |
b81654f1 MS |
81 | |
82 | struct symbol * | |
83 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
84 | { | |
f86f5ca3 | 85 | struct symbol *sym; |
b81654f1 | 86 | |
176620f1 | 87 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0, |
d2e6263c | 88 | (struct symtab **) NULL); |
b81654f1 MS |
89 | |
90 | if (sym == NULL) | |
91 | { | |
92 | if (noerr) | |
93 | return 0; | |
94 | else | |
8a3fe4f8 | 95 | error (_("No struct type named %s."), name); |
b81654f1 MS |
96 | } |
97 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
98 | { | |
99 | if (noerr) | |
100 | return 0; | |
101 | else | |
8a3fe4f8 | 102 | error (_("This context has class, union or enum %s, not a struct."), |
d2e6263c | 103 | name); |
b81654f1 MS |
104 | } |
105 | return sym; | |
106 | } | |
107 | ||
108 | CORE_ADDR | |
109 | lookup_objc_class (char *classname) | |
110 | { | |
111 | struct value * function, *classval; | |
112 | ||
113 | if (! target_has_execution) | |
114 | { | |
d2e6263c | 115 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
116 | return 0; |
117 | } | |
118 | ||
119 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
120 | function = find_function_in_inferior("objc_lookUpClass"); | |
121 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) | |
122 | function = find_function_in_inferior("objc_lookup_class"); | |
123 | else | |
124 | { | |
e2e0b3e5 | 125 | complaint (&symfile_complaints, _("no way to lookup Objective-C classes")); |
b81654f1 MS |
126 | return 0; |
127 | } | |
128 | ||
129 | classval = value_string (classname, strlen (classname) + 1); | |
130 | classval = value_coerce_array (classval); | |
131 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
132 | 1, &classval)); | |
133 | } | |
134 | ||
c253954e | 135 | CORE_ADDR |
b81654f1 MS |
136 | lookup_child_selector (char *selname) |
137 | { | |
138 | struct value * function, *selstring; | |
139 | ||
140 | if (! target_has_execution) | |
141 | { | |
d2e6263c | 142 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
143 | return 0; |
144 | } | |
145 | ||
146 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
147 | function = find_function_in_inferior("sel_getUid"); | |
148 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) | |
149 | function = find_function_in_inferior("sel_get_any_uid"); | |
150 | else | |
151 | { | |
e2e0b3e5 | 152 | complaint (&symfile_complaints, _("no way to lookup Objective-C selectors")); |
b81654f1 MS |
153 | return 0; |
154 | } | |
155 | ||
d2e6263c MS |
156 | selstring = value_coerce_array (value_string (selname, |
157 | strlen (selname) + 1)); | |
b81654f1 MS |
158 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
159 | } | |
160 | ||
161 | struct value * | |
162 | value_nsstring (char *ptr, int len) | |
163 | { | |
164 | struct value *stringValue[3]; | |
165 | struct value *function, *nsstringValue; | |
166 | struct symbol *sym; | |
167 | struct type *type; | |
168 | ||
169 | if (!target_has_execution) | |
d2e6263c | 170 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 | 171 | |
5e488a7b AC |
172 | sym = lookup_struct_typedef("NSString", 0, 1); |
173 | if (sym == NULL) | |
174 | sym = lookup_struct_typedef("NXString", 0, 1); | |
175 | if (sym == NULL) | |
b81654f1 MS |
176 | type = lookup_pointer_type(builtin_type_void); |
177 | else | |
178 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
179 | ||
180 | stringValue[2] = value_string(ptr, len); | |
181 | stringValue[2] = value_coerce_array(stringValue[2]); | |
d2e6263c | 182 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
183 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
184 | { | |
185 | function = find_function_in_inferior("_NSNewStringFromCString"); | |
186 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
187 | } | |
188 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
189 | { | |
190 | function = find_function_in_inferior("istr"); | |
191 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
192 | } | |
193 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
194 | { | |
195 | function = find_function_in_inferior("+[NSString stringWithCString:]"); | |
196 | stringValue[0] = value_from_longest | |
197 | (builtin_type_long, lookup_objc_class ("NSString")); | |
198 | stringValue[1] = value_from_longest | |
199 | (builtin_type_long, lookup_child_selector ("stringWithCString:")); | |
200 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); | |
201 | } | |
202 | else | |
8a3fe4f8 | 203 | error (_("NSString: internal error -- no way to create new NSString")); |
b81654f1 | 204 | |
04624583 | 205 | deprecated_set_value_type (nsstringValue, type); |
b81654f1 MS |
206 | return nsstringValue; |
207 | } | |
208 | ||
d2e6263c | 209 | /* Objective-C name demangling. */ |
b81654f1 MS |
210 | |
211 | char * | |
9a3d7dfd | 212 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
213 | { |
214 | char *demangled, *cp; | |
215 | ||
216 | if (mangled[0] == '_' && | |
217 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
218 | mangled[2] == '_') | |
219 | { | |
220 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
221 | ||
222 | if (mangled[1] == 'i') | |
223 | *cp++ = '-'; /* for instance method */ | |
224 | else | |
225 | *cp++ = '+'; /* for class method */ | |
226 | ||
227 | *cp++ = '['; /* opening left brace */ | |
228 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
229 | ||
230 | while (*cp && *cp == '_') | |
231 | cp++; /* skip any initial underbars in class name */ | |
232 | ||
7248f48e AF |
233 | cp = strchr(cp, '_'); |
234 | if (!cp) /* find first non-initial underbar */ | |
b81654f1 | 235 | { |
7248f48e | 236 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
237 | return NULL; |
238 | } | |
239 | if (cp[1] == '_') { /* easy case: no category name */ | |
240 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
241 | strcpy(cp, mangled + (cp - demangled) + 2); | |
242 | } | |
243 | else { | |
244 | *cp++ = '('; /* less easy case: category name */ | |
7248f48e AF |
245 | cp = strchr(cp, '_'); |
246 | if (!cp) | |
b81654f1 | 247 | { |
7248f48e | 248 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
249 | return NULL; |
250 | } | |
251 | *cp++ = ')'; | |
d2e6263c | 252 | *cp++ = ' '; /* overwriting 1st char of method name... */ |
b81654f1 MS |
253 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
254 | } | |
255 | ||
256 | while (*cp && *cp == '_') | |
257 | cp++; /* skip any initial underbars in method name */ | |
258 | ||
259 | for (; *cp; cp++) | |
260 | if (*cp == '_') | |
261 | *cp = ':'; /* replace remaining '_' with ':' */ | |
262 | ||
263 | *cp++ = ']'; /* closing right brace */ | |
264 | *cp++ = 0; /* string terminator */ | |
265 | return demangled; | |
266 | } | |
267 | else | |
d2e6263c | 268 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
269 | } |
270 | ||
d2e6263c MS |
271 | /* Print the character C on STREAM as part of the contents of a |
272 | literal string whose delimiter is QUOTER. Note that that format | |
273 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
274 | |
275 | static void | |
f86f5ca3 | 276 | objc_emit_char (int c, struct ui_file *stream, int quoter) |
b81654f1 MS |
277 | { |
278 | ||
d2e6263c | 279 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
280 | |
281 | if (PRINT_LITERAL_FORM (c)) | |
282 | { | |
283 | if (c == '\\' || c == quoter) | |
284 | { | |
285 | fputs_filtered ("\\", stream); | |
286 | } | |
287 | fprintf_filtered (stream, "%c", c); | |
288 | } | |
289 | else | |
290 | { | |
291 | switch (c) | |
292 | { | |
293 | case '\n': | |
294 | fputs_filtered ("\\n", stream); | |
295 | break; | |
296 | case '\b': | |
297 | fputs_filtered ("\\b", stream); | |
298 | break; | |
299 | case '\t': | |
300 | fputs_filtered ("\\t", stream); | |
301 | break; | |
302 | case '\f': | |
303 | fputs_filtered ("\\f", stream); | |
304 | break; | |
305 | case '\r': | |
306 | fputs_filtered ("\\r", stream); | |
307 | break; | |
308 | case '\033': | |
309 | fputs_filtered ("\\e", stream); | |
310 | break; | |
311 | case '\007': | |
312 | fputs_filtered ("\\a", stream); | |
313 | break; | |
314 | default: | |
315 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
316 | break; | |
317 | } | |
318 | } | |
319 | } | |
320 | ||
321 | static void | |
322 | objc_printchar (int c, struct ui_file *stream) | |
323 | { | |
324 | fputs_filtered ("'", stream); | |
325 | objc_emit_char (c, stream, '\''); | |
326 | fputs_filtered ("'", stream); | |
327 | } | |
328 | ||
d2e6263c MS |
329 | /* Print the character string STRING, printing at most LENGTH |
330 | characters. Printing stops early if the number hits print_max; | |
331 | repeat counts are printed as appropriate. Print ellipses at the | |
332 | end if we had to stop before printing LENGTH characters, or if | |
333 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
334 | |
335 | static void | |
fc1a4b47 | 336 | objc_printstr (struct ui_file *stream, const gdb_byte *string, |
36e53c63 | 337 | unsigned int length, int width, int force_ellipses) |
b81654f1 | 338 | { |
f86f5ca3 | 339 | unsigned int i; |
b81654f1 MS |
340 | unsigned int things_printed = 0; |
341 | int in_quotes = 0; | |
342 | int need_comma = 0; | |
b81654f1 MS |
343 | |
344 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
345 | the last byte of it is a null, we don't print that, in |
346 | traditional C style. */ | |
b81654f1 MS |
347 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
348 | length--; | |
349 | ||
350 | if (length == 0) | |
351 | { | |
352 | fputs_filtered ("\"\"", stream); | |
353 | return; | |
354 | } | |
355 | ||
356 | for (i = 0; i < length && things_printed < print_max; ++i) | |
357 | { | |
d2e6263c MS |
358 | /* Position of the character we are examining to see whether it |
359 | is repeated. */ | |
b81654f1 MS |
360 | unsigned int rep1; |
361 | /* Number of repetitions we have detected so far. */ | |
362 | unsigned int reps; | |
363 | ||
364 | QUIT; | |
365 | ||
366 | if (need_comma) | |
367 | { | |
368 | fputs_filtered (", ", stream); | |
369 | need_comma = 0; | |
370 | } | |
371 | ||
372 | rep1 = i + 1; | |
373 | reps = 1; | |
374 | while (rep1 < length && string[rep1] == string[i]) | |
375 | { | |
376 | ++rep1; | |
377 | ++reps; | |
378 | } | |
379 | ||
380 | if (reps > repeat_count_threshold) | |
381 | { | |
382 | if (in_quotes) | |
383 | { | |
384 | if (inspect_it) | |
385 | fputs_filtered ("\\\", ", stream); | |
386 | else | |
387 | fputs_filtered ("\", ", stream); | |
388 | in_quotes = 0; | |
389 | } | |
390 | objc_printchar (string[i], stream); | |
391 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
392 | i = rep1 - 1; | |
393 | things_printed += repeat_count_threshold; | |
394 | need_comma = 1; | |
395 | } | |
396 | else | |
397 | { | |
398 | if (!in_quotes) | |
399 | { | |
400 | if (inspect_it) | |
401 | fputs_filtered ("\\\"", stream); | |
402 | else | |
403 | fputs_filtered ("\"", stream); | |
404 | in_quotes = 1; | |
405 | } | |
406 | objc_emit_char (string[i], stream, '"'); | |
407 | ++things_printed; | |
408 | } | |
409 | } | |
410 | ||
411 | /* Terminate the quotes if necessary. */ | |
412 | if (in_quotes) | |
413 | { | |
414 | if (inspect_it) | |
415 | fputs_filtered ("\\\"", stream); | |
416 | else | |
417 | fputs_filtered ("\"", stream); | |
418 | } | |
419 | ||
420 | if (force_ellipses || i < length) | |
421 | fputs_filtered ("...", stream); | |
422 | } | |
423 | ||
d2e6263c MS |
424 | /* Create a fundamental C type using default reasonable for the |
425 | current target. | |
426 | ||
427 | Some object/debugging file formats (DWARF version 1, COFF, etc) do | |
428 | not define fundamental types such as "int" or "double". Others | |
429 | (stabs or DWARF version 2, etc) do define fundamental types. For | |
430 | the formats which don't provide fundamental types, gdb can create | |
431 | such types using this function. | |
432 | ||
433 | FIXME: Some compilers distinguish explicitly signed integral types | |
434 | (signed short, signed int, signed long) from "regular" integral | |
435 | types (short, int, long) in the debugging information. There is | |
436 | some disagreement as to how useful this feature is. In particular, | |
437 | gcc does not support this. Also, only some debugging formats allow | |
438 | the distinction to be passed on to a debugger. For now, we always | |
439 | just use "short", "int", or "long" as the type name, for both the | |
440 | implicit and explicitly signed types. This also makes life easier | |
441 | for the gdb test suite since we don't have to account for the | |
442 | differences in output depending upon what the compiler and | |
443 | debugging format support. We will probably have to re-examine the | |
444 | issue when gdb starts taking it's fundamental type information | |
445 | directly from the debugging information supplied by the compiler. | |
446 | fnf@cygnus.com */ | |
b81654f1 MS |
447 | |
448 | static struct type * | |
449 | objc_create_fundamental_type (struct objfile *objfile, int typeid) | |
450 | { | |
f86f5ca3 | 451 | struct type *type = NULL; |
b81654f1 MS |
452 | |
453 | switch (typeid) | |
454 | { | |
455 | default: | |
d2e6263c MS |
456 | /* FIXME: For now, if we are asked to produce a type not in |
457 | this language, create the equivalent of a C integer type | |
458 | with the name "<?type?>". When all the dust settles from | |
459 | the type reconstruction work, this should probably become | |
460 | an error. */ | |
b81654f1 | 461 | type = init_type (TYPE_CODE_INT, |
9a76efb6 | 462 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 | 463 | 0, "<?type?>", objfile); |
8a3fe4f8 | 464 | warning (_("internal error: no C/C++ fundamental type %d"), typeid); |
b81654f1 MS |
465 | break; |
466 | case FT_VOID: | |
467 | type = init_type (TYPE_CODE_VOID, | |
468 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
469 | 0, "void", objfile); | |
470 | break; | |
471 | case FT_CHAR: | |
472 | type = init_type (TYPE_CODE_INT, | |
473 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
474 | 0, "char", objfile); | |
475 | break; | |
476 | case FT_SIGNED_CHAR: | |
477 | type = init_type (TYPE_CODE_INT, | |
478 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
479 | 0, "signed char", objfile); | |
480 | break; | |
481 | case FT_UNSIGNED_CHAR: | |
482 | type = init_type (TYPE_CODE_INT, | |
483 | TARGET_CHAR_BIT / TARGET_CHAR_BIT, | |
484 | TYPE_FLAG_UNSIGNED, "unsigned char", objfile); | |
485 | break; | |
486 | case FT_SHORT: | |
487 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 488 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
489 | 0, "short", objfile); |
490 | break; | |
491 | case FT_SIGNED_SHORT: | |
492 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 493 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
494 | 0, "short", objfile); /* FIXME-fnf */ |
495 | break; | |
496 | case FT_UNSIGNED_SHORT: | |
497 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 498 | gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
499 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); |
500 | break; | |
501 | case FT_INTEGER: | |
502 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 503 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
504 | 0, "int", objfile); |
505 | break; | |
506 | case FT_SIGNED_INTEGER: | |
507 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 508 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
509 | 0, "int", objfile); /* FIXME -fnf */ |
510 | break; | |
511 | case FT_UNSIGNED_INTEGER: | |
512 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 513 | gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
514 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); |
515 | break; | |
516 | case FT_LONG: | |
517 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 518 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
519 | 0, "long", objfile); |
520 | break; | |
521 | case FT_SIGNED_LONG: | |
522 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 523 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
524 | 0, "long", objfile); /* FIXME -fnf */ |
525 | break; | |
526 | case FT_UNSIGNED_LONG: | |
527 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 | 528 | gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
529 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); |
530 | break; | |
531 | case FT_LONG_LONG: | |
532 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 UW |
533 | gdbarch_long_long_bit (current_gdbarch) |
534 | / TARGET_CHAR_BIT, | |
b81654f1 MS |
535 | 0, "long long", objfile); |
536 | break; | |
537 | case FT_SIGNED_LONG_LONG: | |
538 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 UW |
539 | gdbarch_long_long_bit (current_gdbarch) |
540 | / TARGET_CHAR_BIT, | |
b81654f1 MS |
541 | 0, "signed long long", objfile); |
542 | break; | |
543 | case FT_UNSIGNED_LONG_LONG: | |
544 | type = init_type (TYPE_CODE_INT, | |
9a76efb6 UW |
545 | gdbarch_long_long_bit (current_gdbarch) |
546 | / TARGET_CHAR_BIT, | |
b81654f1 MS |
547 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); |
548 | break; | |
549 | case FT_FLOAT: | |
550 | type = init_type (TYPE_CODE_FLT, | |
ea06eb3d | 551 | gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT, |
b81654f1 MS |
552 | 0, "float", objfile); |
553 | break; | |
554 | case FT_DBL_PREC_FLOAT: | |
555 | type = init_type (TYPE_CODE_FLT, | |
ea06eb3d UW |
556 | gdbarch_double_bit (current_gdbarch) |
557 | / TARGET_CHAR_BIT, | |
b81654f1 MS |
558 | 0, "double", objfile); |
559 | break; | |
560 | case FT_EXT_PREC_FLOAT: | |
561 | type = init_type (TYPE_CODE_FLT, | |
ea06eb3d UW |
562 | gdbarch_long_double_bit (current_gdbarch) |
563 | / TARGET_CHAR_BIT, | |
b81654f1 MS |
564 | 0, "long double", objfile); |
565 | break; | |
566 | } | |
567 | return (type); | |
568 | } | |
569 | ||
f636b87d AF |
570 | /* Determine if we are currently in the Objective-C dispatch function. |
571 | If so, get the address of the method function that the dispatcher | |
572 | would call and use that as the function to step into instead. Also | |
573 | skip over the trampoline for the function (if any). This is better | |
574 | for the user since they are only interested in stepping into the | |
575 | method function anyway. */ | |
576 | static CORE_ADDR | |
52f729a7 | 577 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
f636b87d AF |
578 | { |
579 | CORE_ADDR real_stop_pc; | |
580 | CORE_ADDR method_stop_pc; | |
581 | ||
52f729a7 UW |
582 | real_stop_pc = gdbarch_skip_trampoline_code |
583 | (current_gdbarch, frame, stop_pc); | |
f636b87d AF |
584 | |
585 | if (real_stop_pc != 0) | |
586 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
587 | else | |
588 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
589 | ||
590 | if (method_stop_pc) | |
591 | { | |
e76f05fa | 592 | real_stop_pc = gdbarch_skip_trampoline_code |
52f729a7 | 593 | (current_gdbarch, frame, method_stop_pc); |
f636b87d AF |
594 | if (real_stop_pc == 0) |
595 | real_stop_pc = method_stop_pc; | |
596 | } | |
597 | ||
598 | return real_stop_pc; | |
599 | } | |
600 | ||
b81654f1 MS |
601 | |
602 | /* Table mapping opcodes into strings for printing operators | |
603 | and precedences of the operators. */ | |
604 | ||
605 | static const struct op_print objc_op_print_tab[] = | |
606 | { | |
607 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
608 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
609 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
610 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
611 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
612 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
613 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
614 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
615 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
616 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
617 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
618 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
619 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
620 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
621 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
622 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
623 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
624 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
625 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
626 | {"%", BINOP_REM, PREC_MUL, 0}, | |
627 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
628 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
629 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
630 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
631 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
632 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
633 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
634 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
635 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 636 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
637 | }; |
638 | ||
b81654f1 | 639 | const struct language_defn objc_language_defn = { |
d2e6263c | 640 | "objective-c", /* Language name */ |
b81654f1 | 641 | language_objc, |
cad351d1 | 642 | NULL, |
b81654f1 MS |
643 | range_check_off, |
644 | type_check_off, | |
645 | case_sensitive_on, | |
7ca2d3a3 | 646 | array_row_major, |
5f9769d1 | 647 | &exp_descriptor_standard, |
b81654f1 MS |
648 | objc_parse, |
649 | objc_error, | |
e85c3284 | 650 | null_post_parser, |
b81654f1 MS |
651 | objc_printchar, /* Print a character constant */ |
652 | objc_printstr, /* Function to print string constant */ | |
653 | objc_emit_char, | |
654 | objc_create_fundamental_type, /* Create fundamental type in this language */ | |
655 | c_print_type, /* Print a type using appropriate syntax */ | |
656 | c_val_print, /* Print a value using appropriate syntax */ | |
657 | c_value_print, /* Print a top-level value */ | |
f636b87d | 658 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
5f9a71c3 DC |
659 | value_of_this, /* value_of_this */ |
660 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ | |
b368761e | 661 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 662 | objc_demangle, /* Language specific symbol demangler */ |
31c27f77 | 663 | NULL, /* Language specific class_name_from_physname */ |
d2e6263c MS |
664 | objc_op_print_tab, /* Expression operators for printing */ |
665 | 1, /* C-style arrays */ | |
b81654f1 | 666 | 0, /* String lower bound */ |
cad351d1 | 667 | NULL, |
6084f43a | 668 | default_word_break_characters, |
cad351d1 | 669 | c_language_arch_info, |
e79af960 | 670 | default_print_array_index, |
41f1b697 | 671 | default_pass_by_reference, |
b81654f1 MS |
672 | LANG_MAGIC |
673 | }; | |
674 | ||
675 | /* | |
676 | * ObjC: | |
d2e6263c | 677 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
678 | */ |
679 | ||
d2e6263c | 680 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
681 | { |
682 | struct selname *next; | |
683 | char *msglist_sel; | |
684 | int msglist_len; | |
685 | }; | |
686 | ||
687 | static int msglist_len; | |
688 | static struct selname *selname_chain; | |
689 | static char *msglist_sel; | |
690 | ||
691 | void | |
692 | start_msglist(void) | |
693 | { | |
f86f5ca3 | 694 | struct selname *new = |
b81654f1 MS |
695 | (struct selname *) xmalloc (sizeof (struct selname)); |
696 | ||
697 | new->next = selname_chain; | |
698 | new->msglist_len = msglist_len; | |
699 | new->msglist_sel = msglist_sel; | |
700 | msglist_len = 0; | |
701 | msglist_sel = (char *)xmalloc(1); | |
702 | *msglist_sel = 0; | |
703 | selname_chain = new; | |
704 | } | |
705 | ||
706 | void | |
707 | add_msglist(struct stoken *str, int addcolon) | |
708 | { | |
709 | char *s, *p; | |
710 | int len, plen; | |
711 | ||
d2e6263c MS |
712 | if (str == 0) { /* Unnamed arg, or... */ |
713 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
714 | msglist_len++; |
715 | return; | |
716 | } | |
717 | p = ""; | |
718 | plen = 0; | |
719 | } else { | |
720 | p = str->ptr; | |
721 | plen = str->length; | |
722 | } | |
723 | len = plen + strlen(msglist_sel) + 2; | |
724 | s = (char *)xmalloc(len); | |
725 | strcpy(s, msglist_sel); | |
726 | strncat(s, p, plen); | |
7248f48e | 727 | xfree(msglist_sel); |
b81654f1 MS |
728 | msglist_sel = s; |
729 | if (addcolon) { | |
730 | s[len-2] = ':'; | |
731 | s[len-1] = 0; | |
732 | msglist_len++; | |
733 | } else | |
734 | s[len-2] = '\0'; | |
735 | } | |
736 | ||
737 | int | |
738 | end_msglist(void) | |
739 | { | |
f86f5ca3 PH |
740 | int val = msglist_len; |
741 | struct selname *sel = selname_chain; | |
742 | char *p = msglist_sel; | |
c253954e | 743 | CORE_ADDR selid; |
b81654f1 MS |
744 | |
745 | selname_chain = sel->next; | |
746 | msglist_len = sel->msglist_len; | |
747 | msglist_sel = sel->msglist_sel; | |
748 | selid = lookup_child_selector(p); | |
749 | if (!selid) | |
8a3fe4f8 | 750 | error (_("Can't find selector \"%s\""), p); |
b81654f1 | 751 | write_exp_elt_longcst (selid); |
7248f48e | 752 | xfree(p); |
d2e6263c | 753 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 754 | xfree(sel); |
b81654f1 MS |
755 | |
756 | return val; | |
757 | } | |
758 | ||
759 | /* | |
760 | * Function: specialcmp (char *a, char *b) | |
761 | * | |
762 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 763 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
764 | */ |
765 | ||
b9362cc7 AC |
766 | static int |
767 | specialcmp (char *a, char *b) | |
b81654f1 MS |
768 | { |
769 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
770 | { | |
771 | if (*a != *b) | |
772 | return *a - *b; | |
773 | a++, b++; | |
774 | } | |
775 | if (*a && *a != ' ' && *a != ']') | |
776 | return 1; /* a is longer therefore greater */ | |
777 | if (*b && *b != ' ' && *b != ']') | |
778 | return -1; /* a is shorter therefore lesser */ | |
779 | return 0; /* a and b are identical */ | |
780 | } | |
781 | ||
782 | /* | |
36e53c63 | 783 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 784 | * |
d2e6263c MS |
785 | * Comparison function for use with qsort. Arguments are symbols or |
786 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
787 | */ |
788 | ||
789 | static int | |
36e53c63 | 790 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
791 | { |
792 | char *aname, *bname; | |
793 | ||
de5ad195 DC |
794 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
795 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 796 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 797 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 798 | |
7248f48e AF |
799 | aname = strchr(aname, ' '); |
800 | bname = strchr(bname, ' '); | |
801 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 802 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
803 | |
804 | return specialcmp (aname+1, bname+1); | |
805 | } | |
806 | ||
807 | /* | |
808 | * Function: selectors_info (regexp, from_tty) | |
809 | * | |
d2e6263c MS |
810 | * Implements the "Info selectors" command. Takes an optional regexp |
811 | * arg. Lists all objective c selectors that match the regexp. Works | |
812 | * by grepping thru all symbols for objective c methods. Output list | |
813 | * is sorted and uniqued. | |
b81654f1 MS |
814 | */ |
815 | ||
816 | static void | |
817 | selectors_info (char *regexp, int from_tty) | |
818 | { | |
819 | struct objfile *objfile; | |
820 | struct minimal_symbol *msymbol; | |
821 | char *name; | |
822 | char *val; | |
823 | int matches = 0; | |
824 | int maxlen = 0; | |
825 | int ix; | |
826 | char myregexp[2048]; | |
827 | char asel[256]; | |
828 | struct symbol **sym_arr; | |
829 | int plusminus = 0; | |
830 | ||
831 | if (regexp == NULL) | |
d2e6263c | 832 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
833 | else |
834 | { | |
d2e6263c MS |
835 | if (*regexp == '+' || *regexp == '-') |
836 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
837 | plusminus = *regexp++; |
838 | while (*regexp == ' ' || *regexp == '\t') | |
839 | regexp++; | |
840 | } | |
841 | if (*regexp == '\0') | |
842 | strcpy(myregexp, ".*]"); | |
843 | else | |
844 | { | |
845 | strcpy(myregexp, regexp); | |
846 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
847 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
848 | else | |
849 | strcat(myregexp, ".*]"); | |
850 | } | |
851 | } | |
852 | ||
853 | if (regexp != NULL) | |
5e488a7b AC |
854 | { |
855 | val = re_comp (myregexp); | |
856 | if (val != 0) | |
8a3fe4f8 | 857 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 858 | } |
b81654f1 | 859 | |
d2e6263c | 860 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
861 | ALL_MSYMBOLS (objfile, msymbol) |
862 | { | |
863 | QUIT; | |
36018d2e | 864 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
865 | if (name && |
866 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 867 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 868 | { |
d2e6263c | 869 | /* Filter for class/instance methods. */ |
b81654f1 | 870 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
871 | continue; |
872 | /* Find selector part. */ | |
873 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
874 | if (regexp == NULL || re_exec(++name) != 0) |
875 | { | |
876 | char *mystart = name; | |
877 | char *myend = (char *) strchr(mystart, ']'); | |
878 | ||
879 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 880 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
881 | matches++; |
882 | } | |
883 | } | |
884 | } | |
885 | if (matches) | |
886 | { | |
a3f17187 | 887 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
888 | regexp ? regexp : "*"); |
889 | ||
890 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
891 | matches = 0; | |
892 | ALL_MSYMBOLS (objfile, msymbol) | |
893 | { | |
894 | QUIT; | |
36018d2e | 895 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
896 | if (name && |
897 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 898 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 899 | { |
d2e6263c | 900 | /* Filter for class/instance methods. */ |
b81654f1 | 901 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
902 | continue; |
903 | /* Find selector part. */ | |
904 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
905 | if (regexp == NULL || re_exec(++name) != 0) |
906 | sym_arr[matches++] = (struct symbol *) msymbol; | |
907 | } | |
908 | } | |
909 | ||
910 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
911 | compare_selectors); | |
d2e6263c MS |
912 | /* Prevent compare on first iteration. */ |
913 | asel[0] = 0; | |
914 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
915 | { |
916 | char *p = asel; | |
917 | ||
918 | QUIT; | |
36018d2e | 919 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
920 | name = strchr (name, ' ') + 1; |
921 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 922 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 923 | |
d2e6263c MS |
924 | /* Copy selector part. */ |
925 | while (*name && *name != ']') | |
b81654f1 MS |
926 | *p++ = *name++; |
927 | *p++ = '\0'; | |
d2e6263c MS |
928 | /* Print in columns. */ |
929 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
930 | } |
931 | begin_line(); | |
932 | } | |
933 | else | |
a3f17187 | 934 | printf_filtered (_("No selectors matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
935 | } |
936 | ||
937 | /* | |
36e53c63 | 938 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 939 | * |
d2e6263c MS |
940 | * Comparison function for use with qsort. Arguments are symbols or |
941 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
942 | */ |
943 | ||
944 | static int | |
36e53c63 | 945 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
946 | { |
947 | char *aname, *bname; | |
948 | ||
de5ad195 DC |
949 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
950 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 951 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 952 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
953 | |
954 | return specialcmp (aname+1, bname+1); | |
955 | } | |
956 | ||
957 | /* | |
958 | * Function: classes_info(regexp, from_tty) | |
959 | * | |
960 | * Implements the "info classes" command for objective c classes. | |
961 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
962 | * Works by grepping thru the list of objective c methods. List will |
963 | * be sorted and uniqued (since one class may have many methods). | |
964 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
965 | */ |
966 | ||
967 | static void | |
968 | classes_info (char *regexp, int from_tty) | |
969 | { | |
970 | struct objfile *objfile; | |
971 | struct minimal_symbol *msymbol; | |
972 | char *name; | |
973 | char *val; | |
974 | int matches = 0; | |
975 | int maxlen = 0; | |
976 | int ix; | |
977 | char myregexp[2048]; | |
978 | char aclass[256]; | |
979 | struct symbol **sym_arr; | |
980 | ||
981 | if (regexp == NULL) | |
d2e6263c | 982 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
983 | else |
984 | { | |
985 | strcpy(myregexp, regexp); | |
986 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 987 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
988 | myregexp[strlen(myregexp) - 1] = ' '; |
989 | else | |
990 | strcat(myregexp, ".* "); | |
991 | } | |
992 | ||
993 | if (regexp != NULL) | |
5e488a7b AC |
994 | { |
995 | val = re_comp (myregexp); | |
996 | if (val != 0) | |
8a3fe4f8 | 997 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 998 | } |
b81654f1 | 999 | |
d2e6263c | 1000 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
1001 | ALL_MSYMBOLS (objfile, msymbol) |
1002 | { | |
1003 | QUIT; | |
36018d2e | 1004 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
1005 | if (name && |
1006 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1007 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1008 | if (regexp == NULL || re_exec(name+2) != 0) |
1009 | { | |
d2e6263c MS |
1010 | /* Compute length of classname part. */ |
1011 | char *mystart = name + 2; | |
b81654f1 MS |
1012 | char *myend = (char *) strchr(mystart, ' '); |
1013 | ||
1014 | if (myend && (myend - mystart > maxlen)) | |
1015 | maxlen = myend - mystart; | |
1016 | matches++; | |
1017 | } | |
1018 | } | |
1019 | if (matches) | |
1020 | { | |
a3f17187 | 1021 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 MS |
1022 | regexp ? regexp : "*"); |
1023 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
1024 | matches = 0; | |
1025 | ALL_MSYMBOLS (objfile, msymbol) | |
1026 | { | |
1027 | QUIT; | |
36018d2e | 1028 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
1029 | if (name && |
1030 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 1031 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
1032 | if (regexp == NULL || re_exec(name+2) != 0) |
1033 | sym_arr[matches++] = (struct symbol *) msymbol; | |
1034 | } | |
1035 | ||
1036 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
1037 | compare_classes); | |
d2e6263c MS |
1038 | /* Prevent compare on first iteration. */ |
1039 | aclass[0] = 0; | |
1040 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
1041 | { |
1042 | char *p = aclass; | |
1043 | ||
1044 | QUIT; | |
36018d2e | 1045 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
1046 | name += 2; |
1047 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 1048 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 1049 | |
d2e6263c MS |
1050 | /* Copy class part of method name. */ |
1051 | while (*name && *name != ' ') | |
b81654f1 MS |
1052 | *p++ = *name++; |
1053 | *p++ = '\0'; | |
d2e6263c MS |
1054 | /* Print in columns. */ |
1055 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
1056 | } |
1057 | begin_line(); | |
1058 | } | |
1059 | else | |
a3f17187 | 1060 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
1061 | } |
1062 | ||
1063 | /* | |
1064 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
1065 | * | |
1066 | * Input: a string representing a selector | |
1067 | * a pointer to an array of symbol pointers | |
1068 | * possibly a pointer to a symbol found by the caller. | |
1069 | * | |
d2e6263c MS |
1070 | * Output: number of methods that implement that selector. Side |
1071 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 1072 | * |
d2e6263c MS |
1073 | * By analogy with function "find_methods" (symtab.c), builds a list |
1074 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
1075 | * (symtab.c) can list them and ask the user to choose one or more. | |
1076 | * In this case the matches are objective c methods | |
1077 | * ("implementations") matching an objective c selector. | |
b81654f1 | 1078 | * |
d2e6263c MS |
1079 | * Note that it is possible for a normal (c-style) function to have |
1080 | * the same name as an objective c selector. To prevent the selector | |
1081 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
1082 | * search for such a function first, and if it finds one, pass it in | |
1083 | * to us. We will then integrate it into the list. We also search | |
1084 | * for one here, among the minsyms. | |
b81654f1 | 1085 | * |
d2e6263c MS |
1086 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
1087 | * into two parts: debuggable (struct symbol) syms, and | |
1088 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
1089 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
1090 | * be the index of the first non-debuggable one). | |
b81654f1 MS |
1091 | */ |
1092 | ||
1093 | /* | |
1094 | * Function: total_number_of_imps (char *selector); | |
1095 | * | |
1096 | * Input: a string representing a selector | |
1097 | * Output: number of methods that implement that selector. | |
1098 | * | |
d2e6263c | 1099 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 1100 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
1101 | * matching the input, and to allocate an array of pointers to them |
1102 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
1103 | */ |
1104 | ||
1105 | char * | |
1106 | parse_selector (char *method, char **selector) | |
1107 | { | |
1108 | char *s1 = NULL; | |
1109 | char *s2 = NULL; | |
1110 | int found_quote = 0; | |
1111 | ||
1112 | char *nselector = NULL; | |
1113 | ||
e8f3fcdd | 1114 | gdb_assert (selector != NULL); |
b81654f1 MS |
1115 | |
1116 | s1 = method; | |
1117 | ||
1118 | while (isspace (*s1)) | |
1119 | s1++; | |
1120 | if (*s1 == '\'') | |
1121 | { | |
1122 | found_quote = 1; | |
1123 | s1++; | |
1124 | } | |
1125 | while (isspace (*s1)) | |
1126 | s1++; | |
1127 | ||
1128 | nselector = s1; | |
1129 | s2 = s1; | |
1130 | ||
1131 | for (;;) { | |
1132 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1133 | *s1++ = *s2; | |
1134 | else if (isspace (*s2)) | |
1135 | ; | |
1136 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
1137 | break; | |
1138 | else | |
1139 | return NULL; | |
1140 | s2++; | |
1141 | } | |
1142 | *s1++ = '\0'; | |
1143 | ||
1144 | while (isspace (*s2)) | |
1145 | s2++; | |
1146 | if (found_quote) | |
1147 | { | |
1148 | if (*s2 == '\'') | |
1149 | s2++; | |
1150 | while (isspace (*s2)) | |
1151 | s2++; | |
1152 | } | |
1153 | ||
1154 | if (selector != NULL) | |
1155 | *selector = nselector; | |
1156 | ||
1157 | return s2; | |
1158 | } | |
1159 | ||
1160 | char * | |
d2e6263c MS |
1161 | parse_method (char *method, char *type, char **class, |
1162 | char **category, char **selector) | |
b81654f1 MS |
1163 | { |
1164 | char *s1 = NULL; | |
1165 | char *s2 = NULL; | |
1166 | int found_quote = 0; | |
1167 | ||
1168 | char ntype = '\0'; | |
1169 | char *nclass = NULL; | |
1170 | char *ncategory = NULL; | |
1171 | char *nselector = NULL; | |
1172 | ||
e8f3fcdd AC |
1173 | gdb_assert (type != NULL); |
1174 | gdb_assert (class != NULL); | |
1175 | gdb_assert (category != NULL); | |
1176 | gdb_assert (selector != NULL); | |
b81654f1 MS |
1177 | |
1178 | s1 = method; | |
1179 | ||
1180 | while (isspace (*s1)) | |
1181 | s1++; | |
1182 | if (*s1 == '\'') | |
1183 | { | |
1184 | found_quote = 1; | |
1185 | s1++; | |
1186 | } | |
1187 | while (isspace (*s1)) | |
1188 | s1++; | |
1189 | ||
1190 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1191 | ntype = *s1++; | |
1192 | ||
1193 | while (isspace (*s1)) | |
1194 | s1++; | |
1195 | ||
1196 | if (*s1 != '[') | |
1197 | return NULL; | |
1198 | s1++; | |
1199 | ||
1200 | nclass = s1; | |
1201 | while (isalnum (*s1) || (*s1 == '_')) | |
1202 | s1++; | |
1203 | ||
1204 | s2 = s1; | |
1205 | while (isspace (*s2)) | |
1206 | s2++; | |
1207 | ||
1208 | if (*s2 == '(') | |
1209 | { | |
1210 | s2++; | |
1211 | while (isspace (*s2)) | |
1212 | s2++; | |
1213 | ncategory = s2; | |
1214 | while (isalnum (*s2) || (*s2 == '_')) | |
1215 | s2++; | |
1216 | *s2++ = '\0'; | |
1217 | } | |
1218 | ||
d2e6263c | 1219 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1220 | *s1++ = '\0'; |
1221 | ||
1222 | nselector = s2; | |
1223 | s1 = s2; | |
1224 | ||
1225 | for (;;) { | |
1226 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1227 | *s1++ = *s2; | |
1228 | else if (isspace (*s2)) | |
1229 | ; | |
1230 | else if (*s2 == ']') | |
1231 | break; | |
1232 | else | |
1233 | return NULL; | |
1234 | s2++; | |
1235 | } | |
1236 | *s1++ = '\0'; | |
1237 | s2++; | |
1238 | ||
1239 | while (isspace (*s2)) | |
1240 | s2++; | |
1241 | if (found_quote) | |
1242 | { | |
1243 | if (*s2 != '\'') | |
1244 | return NULL; | |
1245 | s2++; | |
1246 | while (isspace (*s2)) | |
1247 | s2++; | |
1248 | } | |
1249 | ||
1250 | if (type != NULL) | |
1251 | *type = ntype; | |
1252 | if (class != NULL) | |
1253 | *class = nclass; | |
1254 | if (category != NULL) | |
1255 | *category = ncategory; | |
1256 | if (selector != NULL) | |
1257 | *selector = nselector; | |
1258 | ||
1259 | return s2; | |
1260 | } | |
1261 | ||
2f9a90b4 | 1262 | static void |
d2e6263c MS |
1263 | find_methods (struct symtab *symtab, char type, |
1264 | const char *class, const char *category, | |
1265 | const char *selector, struct symbol **syms, | |
1266 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1267 | { |
1268 | struct objfile *objfile = NULL; | |
1269 | struct minimal_symbol *msymbol = NULL; | |
1270 | struct block *block = NULL; | |
1271 | struct symbol *sym = NULL; | |
1272 | ||
1273 | char *symname = NULL; | |
1274 | ||
1275 | char ntype = '\0'; | |
1276 | char *nclass = NULL; | |
1277 | char *ncategory = NULL; | |
1278 | char *nselector = NULL; | |
1279 | ||
1280 | unsigned int csym = 0; | |
1281 | unsigned int cdebug = 0; | |
1282 | ||
1283 | static char *tmp = NULL; | |
1284 | static unsigned int tmplen = 0; | |
1285 | ||
e8f3fcdd AC |
1286 | gdb_assert (nsym != NULL); |
1287 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1288 | |
1289 | if (symtab) | |
1290 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1291 | ||
1292 | ALL_MSYMBOLS (objfile, msymbol) | |
1293 | { | |
1294 | QUIT; | |
1295 | ||
1296 | if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text)) | |
d2e6263c | 1297 | /* Not a function or method. */ |
b81654f1 MS |
1298 | continue; |
1299 | ||
1300 | if (symtab) | |
8da065d5 DC |
1301 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) || |
1302 | (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block))) | |
d2e6263c | 1303 | /* Not in the specified symtab. */ |
b81654f1 MS |
1304 | continue; |
1305 | ||
36018d2e | 1306 | symname = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
1307 | if (symname == NULL) |
1308 | continue; | |
1309 | ||
1310 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
d2e6263c | 1311 | /* Not a method name. */ |
b81654f1 MS |
1312 | continue; |
1313 | ||
1314 | while ((strlen (symname) + 1) >= tmplen) | |
1315 | { | |
1316 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1317 | tmp = xrealloc (tmp, tmplen); | |
1318 | } | |
1319 | strcpy (tmp, symname); | |
1320 | ||
1321 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1322 | continue; | |
1323 | ||
1324 | if ((type != '\0') && (ntype != type)) | |
1325 | continue; | |
1326 | ||
d2e6263c MS |
1327 | if ((class != NULL) |
1328 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
b81654f1 MS |
1329 | continue; |
1330 | ||
d2e6263c MS |
1331 | if ((category != NULL) && |
1332 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
b81654f1 MS |
1333 | continue; |
1334 | ||
d2e6263c MS |
1335 | if ((selector != NULL) && |
1336 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
b81654f1 MS |
1337 | continue; |
1338 | ||
1339 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1340 | if (sym != NULL) | |
1341 | { | |
36018d2e | 1342 | const char *newsymname = SYMBOL_NATURAL_NAME (sym); |
b81654f1 | 1343 | |
b81654f1 MS |
1344 | if (strcmp (symname, newsymname) == 0) |
1345 | { | |
d2e6263c MS |
1346 | /* Found a high-level method sym: swap it into the |
1347 | lower part of sym_arr (below num_debuggable). */ | |
b81654f1 MS |
1348 | if (syms != NULL) |
1349 | { | |
1350 | syms[csym] = syms[cdebug]; | |
1351 | syms[cdebug] = sym; | |
1352 | } | |
1353 | csym++; | |
1354 | cdebug++; | |
1355 | } | |
1356 | else | |
1357 | { | |
d2e6263c MS |
1358 | warning ( |
1359 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
b81654f1 MS |
1360 | newsymname, symname); |
1361 | if (syms != NULL) | |
1362 | syms[csym] = (struct symbol *) msymbol; | |
1363 | csym++; | |
1364 | } | |
1365 | } | |
1366 | else | |
1367 | { | |
d2e6263c | 1368 | /* Found a non-debuggable method symbol. */ |
b81654f1 MS |
1369 | if (syms != NULL) |
1370 | syms[csym] = (struct symbol *) msymbol; | |
1371 | csym++; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | if (nsym != NULL) | |
1376 | *nsym = csym; | |
1377 | if (ndebug != NULL) | |
1378 | *ndebug = cdebug; | |
1379 | } | |
1380 | ||
1381 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1382 | char *method, struct symbol **syms, |
1383 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1384 | { |
1385 | char type = '\0'; | |
1386 | char *class = NULL; | |
1387 | char *category = NULL; | |
1388 | char *selector = NULL; | |
1389 | ||
1390 | unsigned int csym = 0; | |
1391 | unsigned int cdebug = 0; | |
1392 | ||
1393 | unsigned int ncsym = 0; | |
1394 | unsigned int ncdebug = 0; | |
1395 | ||
1396 | char *buf = NULL; | |
1397 | char *tmp = NULL; | |
1398 | ||
e8f3fcdd AC |
1399 | gdb_assert (nsym != NULL); |
1400 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1401 | |
1402 | if (nsym != NULL) | |
1403 | *nsym = 0; | |
1404 | if (ndebug != NULL) | |
1405 | *ndebug = 0; | |
1406 | ||
1407 | buf = (char *) alloca (strlen (method) + 1); | |
1408 | strcpy (buf, method); | |
1409 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1410 | ||
1411 | if (tmp == NULL) { | |
1412 | ||
b81654f1 MS |
1413 | struct symbol *sym = NULL; |
1414 | struct minimal_symbol *msym = NULL; | |
1415 | ||
1416 | strcpy (buf, method); | |
1417 | tmp = parse_selector (buf, &selector); | |
1418 | ||
1419 | if (tmp == NULL) | |
1420 | return NULL; | |
1421 | ||
cdef89d0 | 1422 | sym = lookup_symbol (selector, block, VAR_DOMAIN, 0, NULL); |
b81654f1 MS |
1423 | if (sym != NULL) |
1424 | { | |
1425 | if (syms) | |
1426 | syms[csym] = sym; | |
1427 | csym++; | |
1428 | cdebug++; | |
1429 | } | |
1430 | ||
1431 | if (sym == NULL) | |
1432 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1433 | ||
1434 | if (msym != NULL) | |
1435 | { | |
1436 | if (syms) | |
36e53c63 | 1437 | syms[csym] = (struct symbol *)msym; |
b81654f1 MS |
1438 | csym++; |
1439 | } | |
1440 | } | |
1441 | ||
1442 | if (syms != NULL) | |
d2e6263c MS |
1443 | find_methods (symtab, type, class, category, selector, |
1444 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1445 | else |
d2e6263c MS |
1446 | find_methods (symtab, type, class, category, selector, |
1447 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1448 | |
d2e6263c | 1449 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1450 | if (ncsym == 0 && ncdebug == 0) |
1451 | return method; | |
1452 | ||
1453 | /* Take debug symbols from the second batch of symbols and swap them | |
1454 | * with debug symbols from the first batch. Repeat until either the | |
1455 | * second section is out of debug symbols or the first section is | |
1456 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1457 | * packed to the beginning of the buffer. |
1458 | */ | |
b81654f1 MS |
1459 | |
1460 | if (syms != NULL) | |
1461 | { | |
1462 | while ((cdebug < csym) && (ncdebug > 0)) | |
1463 | { | |
1464 | struct symbol *s = NULL; | |
d2e6263c MS |
1465 | /* First non-debugging symbol. */ |
1466 | unsigned int i = cdebug; | |
1467 | /* Last of second batch of debug symbols. */ | |
1468 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1469 | |
1470 | s = syms[j]; | |
1471 | syms[j] = syms[i]; | |
1472 | syms[i] = s; | |
1473 | ||
d2e6263c MS |
1474 | /* We've moved a symbol from the second debug section to the |
1475 | first one. */ | |
b81654f1 MS |
1476 | cdebug++; |
1477 | ncdebug--; | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | csym += ncsym; | |
1482 | cdebug += ncdebug; | |
1483 | ||
1484 | if (nsym != NULL) | |
1485 | *nsym = csym; | |
1486 | if (ndebug != NULL) | |
1487 | *ndebug = cdebug; | |
1488 | ||
1489 | if (syms == NULL) | |
1490 | return method + (tmp - buf); | |
1491 | ||
1492 | if (csym > 1) | |
1493 | { | |
d2e6263c | 1494 | /* Sort debuggable symbols. */ |
b81654f1 | 1495 | if (cdebug > 1) |
d2e6263c MS |
1496 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1497 | compare_classes); | |
b81654f1 | 1498 | |
d2e6263c | 1499 | /* Sort minimal_symbols. */ |
b81654f1 | 1500 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1501 | qsort (&syms[cdebug], csym - cdebug, |
1502 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1503 | } |
d2e6263c MS |
1504 | /* Terminate the sym_arr list. */ |
1505 | syms[csym] = 0; | |
b81654f1 MS |
1506 | |
1507 | return method + (tmp - buf); | |
1508 | } | |
1509 | ||
b9362cc7 | 1510 | static void |
b81654f1 MS |
1511 | print_object_command (char *args, int from_tty) |
1512 | { | |
1513 | struct value *object, *function, *description; | |
36e53c63 | 1514 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1515 | int i = 0; |
22a44745 | 1516 | gdb_byte c = 0; |
b81654f1 MS |
1517 | |
1518 | if (!args || !*args) | |
d2e6263c MS |
1519 | error ( |
1520 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1521 | |
1522 | { | |
1523 | struct expression *expr = parse_expression (args); | |
f86f5ca3 | 1524 | struct cleanup *old_chain = |
d2e6263c | 1525 | make_cleanup (free_current_contents, &expr); |
b81654f1 MS |
1526 | int pc = 0; |
1527 | ||
5f9769d1 PH |
1528 | object = expr->language_defn->la_exp_desc->evaluate_exp |
1529 | (builtin_type_void_data_ptr, expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1530 | do_cleanups (old_chain); |
1531 | } | |
1532 | ||
36e53c63 AF |
1533 | /* Validate the address for sanity. */ |
1534 | object_addr = value_as_long (object); | |
1535 | read_memory (object_addr, &c, 1); | |
1536 | ||
7248f48e | 1537 | function = find_function_in_inferior ("_NSPrintForDebugger"); |
36e53c63 | 1538 | if (function == NULL) |
8a3fe4f8 | 1539 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 MS |
1540 | |
1541 | description = call_function_by_hand (function, 1, &object); | |
1542 | ||
7248f48e AF |
1543 | string_addr = value_as_long (description); |
1544 | if (string_addr == 0) | |
8a3fe4f8 | 1545 | error (_("object returns null description")); |
b81654f1 MS |
1546 | |
1547 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1548 | if (c != 0) |
b81654f1 | 1549 | do |
d2e6263c | 1550 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1551 | QUIT; |
1552 | printf_filtered ("%c", c); | |
1553 | read_memory (string_addr + i++, &c, 1); | |
1554 | } while (c != 0); | |
1555 | else | |
a3f17187 | 1556 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1557 | printf_filtered ("\n"); |
1558 | } | |
1559 | ||
d2e6263c MS |
1560 | /* The data structure 'methcalls' is used to detect method calls (thru |
1561 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1562 | * and ultimately find the method being called. | |
b81654f1 MS |
1563 | */ |
1564 | ||
1565 | struct objc_methcall { | |
1566 | char *name; | |
d2e6263c | 1567 | /* Return instance method to be called. */ |
36e53c63 | 1568 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1569 | /* Start of pc range corresponding to method invocation. */ |
1570 | CORE_ADDR begin; | |
1571 | /* End of pc range corresponding to method invocation. */ | |
1572 | CORE_ADDR end; | |
b81654f1 MS |
1573 | }; |
1574 | ||
d2e6263c MS |
1575 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1576 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1577 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1578 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1579 | |
1580 | static struct objc_methcall methcalls[] = { | |
1581 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1582 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1583 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1584 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1585 | { "_objc_getClass", NULL, 0, 0}, | |
1586 | { "_objc_getMetaClass", NULL, 0, 0} | |
1587 | }; | |
1588 | ||
1589 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1590 | ||
d2e6263c MS |
1591 | /* The following function, "find_objc_msgsend", fills in the data |
1592 | * structure "objc_msgs" by finding the addresses of each of the | |
1593 | * (currently four) functions that it holds (of which objc_msgSend is | |
1594 | * the first). This must be called each time symbols are loaded, in | |
1595 | * case the functions have moved for some reason. | |
b81654f1 MS |
1596 | */ |
1597 | ||
b9362cc7 | 1598 | static void |
b81654f1 MS |
1599 | find_objc_msgsend (void) |
1600 | { | |
1601 | unsigned int i; | |
1602 | for (i = 0; i < nmethcalls; i++) { | |
1603 | ||
1604 | struct minimal_symbol *func; | |
1605 | ||
d2e6263c | 1606 | /* Try both with and without underscore. */ |
b81654f1 MS |
1607 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1608 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1609 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1610 | } | |
1611 | if (func == NULL) { | |
1612 | methcalls[i].begin = 0; | |
1613 | methcalls[i].end = 0; | |
1614 | continue; | |
1615 | } | |
1616 | ||
1617 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1618 | do { | |
1619 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1620 | } while (methcalls[i].begin == methcalls[i].end); | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | /* find_objc_msgcall (replaces pc_off_limits) | |
1625 | * | |
d2e6263c MS |
1626 | * ALL that this function now does is to determine whether the input |
1627 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1628 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1629 | * if so, it returns the address of the method that will be called. | |
1630 | * | |
1631 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1632 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1633 | * returning the address of the shlib function that would be called. |
e76f05fa | 1634 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c MS |
1635 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
1636 | * dependent modules. | |
b81654f1 MS |
1637 | */ |
1638 | ||
1639 | struct objc_submethod_helper_data { | |
36e53c63 | 1640 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1641 | CORE_ADDR pc; |
1642 | CORE_ADDR *new_pc; | |
1643 | }; | |
1644 | ||
b9362cc7 | 1645 | static int |
7248f48e | 1646 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1647 | { |
d2e6263c MS |
1648 | struct objc_submethod_helper_data *s = |
1649 | (struct objc_submethod_helper_data *) arg; | |
1650 | ||
1651 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1652 | return 1; |
d2e6263c | 1653 | else |
b81654f1 | 1654 | return 0; |
b81654f1 MS |
1655 | } |
1656 | ||
b9362cc7 | 1657 | static int |
36e53c63 | 1658 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1659 | CORE_ADDR pc, |
1660 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1661 | { |
1662 | struct objc_submethod_helper_data s; | |
1663 | ||
1664 | s.f = f; | |
1665 | s.pc = pc; | |
1666 | s.new_pc = new_pc; | |
1667 | ||
1668 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1669 | (void *) &s, |
d2e6263c MS |
1670 | "Unable to determine target of Objective-C method call (ignoring):\n", |
1671 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1672 | return 1; |
d2e6263c | 1673 | else |
b81654f1 | 1674 | return 0; |
b81654f1 MS |
1675 | } |
1676 | ||
1677 | int | |
1678 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1679 | { | |
1680 | unsigned int i; | |
1681 | ||
1682 | find_objc_msgsend (); | |
5e488a7b AC |
1683 | if (new_pc != NULL) |
1684 | { | |
1685 | *new_pc = 0; | |
1686 | } | |
b81654f1 | 1687 | |
d2e6263c MS |
1688 | for (i = 0; i < nmethcalls; i++) |
1689 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1690 | { | |
1691 | if (methcalls[i].stop_at != NULL) | |
1692 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1693 | pc, new_pc); | |
1694 | else | |
1695 | return 0; | |
b81654f1 | 1696 | } |
d2e6263c | 1697 | |
b81654f1 MS |
1698 | return 0; |
1699 | } | |
1700 | ||
a78f21af | 1701 | extern initialize_file_ftype _initialize_objc_language; /* -Wmissing-prototypes */ |
b9362cc7 | 1702 | |
b81654f1 MS |
1703 | void |
1704 | _initialize_objc_language (void) | |
1705 | { | |
1706 | add_language (&objc_language_defn); | |
d2e6263c | 1707 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1bedd215 | 1708 | _("All Objective-C selectors, or those matching REGEXP.")); |
d2e6263c | 1709 | add_info ("classes", classes_info, /* INFO CLASSES command. */ |
1bedd215 | 1710 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1711 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1712 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1713 | add_com_alias ("po", "print-object", class_vars, 1); |
1714 | } | |
1715 | ||
b81654f1 MS |
1716 | static void |
1717 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1718 | { | |
d2e6263c | 1719 | method->name = read_memory_unsigned_integer (addr + 0, 4); |
b81654f1 | 1720 | method->types = read_memory_unsigned_integer (addr + 4, 4); |
d2e6263c | 1721 | method->imp = read_memory_unsigned_integer (addr + 8, 4); |
b81654f1 MS |
1722 | } |
1723 | ||
1724 | static | |
1725 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1726 | { | |
1727 | return read_memory_unsigned_integer (addr + 4, 4); | |
1728 | } | |
1729 | ||
1730 | static void | |
1731 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1732 | struct objc_method *method) | |
1733 | { | |
e8f3fcdd | 1734 | gdb_assert (num < read_objc_methlist_nmethods (addr)); |
b81654f1 MS |
1735 | read_objc_method (addr + 8 + (12 * num), method); |
1736 | } | |
1737 | ||
1738 | static void | |
1739 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1740 | { | |
1741 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1742 | } | |
1743 | ||
1744 | static void | |
1745 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1746 | { | |
1747 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1748 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1749 | }; | |
1750 | ||
1751 | static void | |
1752 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1753 | { | |
1754 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1755 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1756 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1757 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1758 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1759 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1760 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1761 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1762 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1763 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1764 | } | |
1765 | ||
b9362cc7 | 1766 | static CORE_ADDR |
b81654f1 MS |
1767 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) |
1768 | { | |
1769 | CORE_ADDR subclass = class; | |
1770 | ||
d2e6263c MS |
1771 | while (subclass != 0) |
1772 | { | |
b81654f1 | 1773 | |
d2e6263c MS |
1774 | struct objc_class class_str; |
1775 | unsigned mlistnum = 0; | |
b81654f1 | 1776 | |
d2e6263c | 1777 | read_objc_class (subclass, &class_str); |
b81654f1 | 1778 | |
d2e6263c MS |
1779 | for (;;) |
1780 | { | |
1781 | CORE_ADDR mlist; | |
1782 | unsigned long nmethods; | |
1783 | unsigned long i; | |
b81654f1 | 1784 | |
d2e6263c MS |
1785 | mlist = read_memory_unsigned_integer (class_str.methods + |
1786 | (4 * mlistnum), 4); | |
1787 | if (mlist == 0) | |
1788 | break; | |
b81654f1 | 1789 | |
d2e6263c | 1790 | nmethods = read_objc_methlist_nmethods (mlist); |
b81654f1 | 1791 | |
d2e6263c MS |
1792 | for (i = 0; i < nmethods; i++) |
1793 | { | |
1794 | struct objc_method meth_str; | |
1795 | read_objc_methlist_method (mlist, i, &meth_str); | |
b81654f1 MS |
1796 | |
1797 | #if 0 | |
d2e6263c MS |
1798 | fprintf (stderr, |
1799 | "checking method 0x%lx against selector 0x%lx\n", | |
1800 | meth_str.name, sel); | |
b81654f1 MS |
1801 | #endif |
1802 | ||
d2e6263c | 1803 | if (meth_str.name == sel) |
1abf022c AF |
1804 | /* FIXME: hppa arch was doing a pointer dereference |
1805 | here. There needs to be a better way to do that. */ | |
1806 | return meth_str.imp; | |
d2e6263c MS |
1807 | } |
1808 | mlistnum++; | |
b81654f1 | 1809 | } |
d2e6263c | 1810 | subclass = class_str.super_class; |
b81654f1 | 1811 | } |
b81654f1 MS |
1812 | |
1813 | return 0; | |
1814 | } | |
1815 | ||
b9362cc7 | 1816 | static CORE_ADDR |
b81654f1 MS |
1817 | find_implementation (CORE_ADDR object, CORE_ADDR sel) |
1818 | { | |
1819 | struct objc_object ostr; | |
1820 | ||
d2e6263c MS |
1821 | if (object == 0) |
1822 | return 0; | |
b81654f1 | 1823 | read_objc_object (object, &ostr); |
d2e6263c MS |
1824 | if (ostr.isa == 0) |
1825 | return 0; | |
b81654f1 MS |
1826 | |
1827 | return find_implementation_from_class (ostr.isa, sel); | |
1828 | } | |
1829 | ||
a0273b2f | 1830 | #define OBJC_FETCH_POINTER_ARGUMENT(argi) \ |
d99344c0 UW |
1831 | gdbarch_fetch_pointer_argument (current_gdbarch, get_current_frame (), \ |
1832 | argi, builtin_type_void_func_ptr) | |
a0273b2f | 1833 | |
b81654f1 MS |
1834 | static int |
1835 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1836 | { | |
1837 | CORE_ADDR object; | |
1838 | CORE_ADDR sel; | |
1839 | CORE_ADDR res; | |
1840 | ||
a0273b2f AF |
1841 | object = OBJC_FETCH_POINTER_ARGUMENT (0); |
1842 | sel = OBJC_FETCH_POINTER_ARGUMENT (1); | |
b81654f1 MS |
1843 | |
1844 | res = find_implementation (object, sel); | |
d2e6263c MS |
1845 | if (new_pc != 0) |
1846 | *new_pc = res; | |
1847 | if (res == 0) | |
1848 | return 1; | |
b81654f1 MS |
1849 | return 0; |
1850 | } | |
1851 | ||
1852 | static int | |
1853 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1854 | { | |
1855 | CORE_ADDR object; | |
1856 | CORE_ADDR sel; | |
1857 | CORE_ADDR res; | |
1858 | ||
a0273b2f AF |
1859 | object = OBJC_FETCH_POINTER_ARGUMENT (1); |
1860 | sel = OBJC_FETCH_POINTER_ARGUMENT (2); | |
b81654f1 MS |
1861 | |
1862 | res = find_implementation (object, sel); | |
d2e6263c MS |
1863 | if (new_pc != 0) |
1864 | *new_pc = res; | |
1865 | if (res == 0) | |
1866 | return 1; | |
b81654f1 MS |
1867 | return 0; |
1868 | } | |
1869 | ||
1870 | static int | |
1871 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1872 | { | |
1873 | struct objc_super sstr; | |
1874 | ||
1875 | CORE_ADDR super; | |
1876 | CORE_ADDR sel; | |
1877 | CORE_ADDR res; | |
1878 | ||
a0273b2f AF |
1879 | super = OBJC_FETCH_POINTER_ARGUMENT (0); |
1880 | sel = OBJC_FETCH_POINTER_ARGUMENT (1); | |
b81654f1 MS |
1881 | |
1882 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1883 | if (sstr.class == 0) |
1884 | return 0; | |
b81654f1 MS |
1885 | |
1886 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1887 | if (new_pc != 0) |
1888 | *new_pc = res; | |
1889 | if (res == 0) | |
1890 | return 1; | |
b81654f1 MS |
1891 | return 0; |
1892 | } | |
1893 | ||
1894 | static int | |
1895 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1896 | { | |
1897 | struct objc_super sstr; | |
1898 | ||
1899 | CORE_ADDR super; | |
1900 | CORE_ADDR sel; | |
1901 | CORE_ADDR res; | |
1902 | ||
a0273b2f AF |
1903 | super = OBJC_FETCH_POINTER_ARGUMENT (1); |
1904 | sel = OBJC_FETCH_POINTER_ARGUMENT (2); | |
b81654f1 MS |
1905 | |
1906 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1907 | if (sstr.class == 0) |
1908 | return 0; | |
b81654f1 MS |
1909 | |
1910 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1911 | if (new_pc != 0) |
1912 | *new_pc = res; | |
1913 | if (res == 0) | |
1914 | return 1; | |
b81654f1 MS |
1915 | return 0; |
1916 | } |