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d2e6263c | 1 | /* Objective-C language support routines for GDB, the GNU debugger. |
b81654f1 | 2 | |
9b254dd1 DJ |
3 | Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008 |
4 | Free Software Foundation, Inc. | |
b81654f1 | 5 | |
437666f8 AC |
6 | Contributed by Apple Computer, Inc. |
7 | Written by Michael Snyder. | |
b81654f1 | 8 | |
437666f8 | 9 | This file is part of GDB. |
b81654f1 | 10 | |
437666f8 AC |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
437666f8 AC |
14 | (at your option) any later version. |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
b81654f1 MS |
23 | |
24 | #include "defs.h" | |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "expression.h" | |
28 | #include "parser-defs.h" | |
29 | #include "language.h" | |
d2e6263c | 30 | #include "c-lang.h" |
b81654f1 | 31 | #include "objc-lang.h" |
60250e8b | 32 | #include "exceptions.h" |
b81654f1 MS |
33 | #include "complaints.h" |
34 | #include "value.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
7248f48e | 37 | #include "gdb_string.h" /* for strchr */ |
b81654f1 MS |
38 | #include "target.h" /* for target_has_execution */ |
39 | #include "gdbcore.h" | |
40 | #include "gdbcmd.h" | |
41 | #include "frame.h" | |
42 | #include "gdb_regex.h" | |
43 | #include "regcache.h" | |
fe898f56 | 44 | #include "block.h" |
04714b91 | 45 | #include "infcall.h" |
4e45ca2e | 46 | #include "valprint.h" |
e8f3fcdd | 47 | #include "gdb_assert.h" |
b81654f1 MS |
48 | |
49 | #include <ctype.h> | |
50 | ||
51 | struct objc_object { | |
52 | CORE_ADDR isa; | |
53 | }; | |
54 | ||
55 | struct objc_class { | |
56 | CORE_ADDR isa; | |
57 | CORE_ADDR super_class; | |
58 | CORE_ADDR name; | |
59 | long version; | |
60 | long info; | |
61 | long instance_size; | |
62 | CORE_ADDR ivars; | |
63 | CORE_ADDR methods; | |
64 | CORE_ADDR cache; | |
65 | CORE_ADDR protocols; | |
66 | }; | |
67 | ||
68 | struct objc_super { | |
69 | CORE_ADDR receiver; | |
70 | CORE_ADDR class; | |
71 | }; | |
72 | ||
73 | struct objc_method { | |
74 | CORE_ADDR name; | |
75 | CORE_ADDR types; | |
76 | CORE_ADDR imp; | |
77 | }; | |
78 | ||
d2e6263c MS |
79 | /* Lookup a structure type named "struct NAME", visible in lexical |
80 | block BLOCK. If NOERR is nonzero, return zero if NAME is not | |
81 | suitably defined. */ | |
b81654f1 MS |
82 | |
83 | struct symbol * | |
84 | lookup_struct_typedef (char *name, struct block *block, int noerr) | |
85 | { | |
f86f5ca3 | 86 | struct symbol *sym; |
b81654f1 | 87 | |
2570f2b7 | 88 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
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)) | |
3e3b026f | 120 | function = find_function_in_inferior("objc_lookUpClass", NULL); |
b81654f1 | 121 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) |
3e3b026f | 122 | function = find_function_in_inferior("objc_lookup_class", NULL); |
b81654f1 MS |
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)) | |
3e3b026f | 147 | function = find_function_in_inferior("sel_getUid", NULL); |
b81654f1 | 148 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) |
3e3b026f | 149 | function = find_function_in_inferior("sel_get_any_uid", NULL); |
b81654f1 MS |
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; | |
3e3b026f UW |
168 | struct objfile *objf; |
169 | struct gdbarch *gdbarch; | |
b81654f1 MS |
170 | |
171 | if (!target_has_execution) | |
d2e6263c | 172 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 | 173 | |
b81654f1 MS |
174 | stringValue[2] = value_string(ptr, len); |
175 | stringValue[2] = value_coerce_array(stringValue[2]); | |
d2e6263c | 176 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
177 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
178 | { | |
3e3b026f | 179 | function = find_function_in_inferior("_NSNewStringFromCString", &objf); |
b81654f1 MS |
180 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
181 | } | |
182 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
183 | { | |
3e3b026f | 184 | function = find_function_in_inferior("istr", &objf); |
b81654f1 MS |
185 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); |
186 | } | |
187 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
188 | { | |
3e3b026f UW |
189 | function |
190 | = find_function_in_inferior("+[NSString stringWithCString:]", &objf); | |
191 | type = builtin_type (get_objfile_arch (objf))->builtin_long; | |
192 | ||
b81654f1 | 193 | stringValue[0] = value_from_longest |
3e3b026f | 194 | (type, lookup_objc_class ("NSString")); |
b81654f1 | 195 | stringValue[1] = value_from_longest |
3e3b026f | 196 | (type, lookup_child_selector ("stringWithCString:")); |
b81654f1 MS |
197 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); |
198 | } | |
199 | else | |
8a3fe4f8 | 200 | error (_("NSString: internal error -- no way to create new NSString")); |
b81654f1 | 201 | |
3e3b026f UW |
202 | gdbarch = get_objfile_arch (objf); |
203 | ||
204 | sym = lookup_struct_typedef("NSString", 0, 1); | |
205 | if (sym == NULL) | |
206 | sym = lookup_struct_typedef("NXString", 0, 1); | |
207 | if (sym == NULL) | |
208 | type = builtin_type (gdbarch)->builtin_data_ptr; | |
209 | else | |
210 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
211 | ||
04624583 | 212 | deprecated_set_value_type (nsstringValue, type); |
b81654f1 MS |
213 | return nsstringValue; |
214 | } | |
215 | ||
d2e6263c | 216 | /* Objective-C name demangling. */ |
b81654f1 MS |
217 | |
218 | char * | |
9a3d7dfd | 219 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
220 | { |
221 | char *demangled, *cp; | |
222 | ||
223 | if (mangled[0] == '_' && | |
224 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
225 | mangled[2] == '_') | |
226 | { | |
227 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
228 | ||
229 | if (mangled[1] == 'i') | |
230 | *cp++ = '-'; /* for instance method */ | |
231 | else | |
232 | *cp++ = '+'; /* for class method */ | |
233 | ||
234 | *cp++ = '['; /* opening left brace */ | |
235 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
236 | ||
237 | while (*cp && *cp == '_') | |
238 | cp++; /* skip any initial underbars in class name */ | |
239 | ||
7248f48e AF |
240 | cp = strchr(cp, '_'); |
241 | if (!cp) /* find first non-initial underbar */ | |
b81654f1 | 242 | { |
7248f48e | 243 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
244 | return NULL; |
245 | } | |
246 | if (cp[1] == '_') { /* easy case: no category name */ | |
247 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
248 | strcpy(cp, mangled + (cp - demangled) + 2); | |
249 | } | |
250 | else { | |
251 | *cp++ = '('; /* less easy case: category name */ | |
7248f48e AF |
252 | cp = strchr(cp, '_'); |
253 | if (!cp) | |
b81654f1 | 254 | { |
7248f48e | 255 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
256 | return NULL; |
257 | } | |
258 | *cp++ = ')'; | |
d2e6263c | 259 | *cp++ = ' '; /* overwriting 1st char of method name... */ |
b81654f1 MS |
260 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
261 | } | |
262 | ||
263 | while (*cp && *cp == '_') | |
264 | cp++; /* skip any initial underbars in method name */ | |
265 | ||
266 | for (; *cp; cp++) | |
267 | if (*cp == '_') | |
268 | *cp = ':'; /* replace remaining '_' with ':' */ | |
269 | ||
270 | *cp++ = ']'; /* closing right brace */ | |
271 | *cp++ = 0; /* string terminator */ | |
272 | return demangled; | |
273 | } | |
274 | else | |
d2e6263c | 275 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
276 | } |
277 | ||
d2e6263c MS |
278 | /* Print the character C on STREAM as part of the contents of a |
279 | literal string whose delimiter is QUOTER. Note that that format | |
280 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
281 | |
282 | static void | |
f86f5ca3 | 283 | objc_emit_char (int c, struct ui_file *stream, int quoter) |
b81654f1 MS |
284 | { |
285 | ||
d2e6263c | 286 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
287 | |
288 | if (PRINT_LITERAL_FORM (c)) | |
289 | { | |
290 | if (c == '\\' || c == quoter) | |
291 | { | |
292 | fputs_filtered ("\\", stream); | |
293 | } | |
294 | fprintf_filtered (stream, "%c", c); | |
295 | } | |
296 | else | |
297 | { | |
298 | switch (c) | |
299 | { | |
300 | case '\n': | |
301 | fputs_filtered ("\\n", stream); | |
302 | break; | |
303 | case '\b': | |
304 | fputs_filtered ("\\b", stream); | |
305 | break; | |
306 | case '\t': | |
307 | fputs_filtered ("\\t", stream); | |
308 | break; | |
309 | case '\f': | |
310 | fputs_filtered ("\\f", stream); | |
311 | break; | |
312 | case '\r': | |
313 | fputs_filtered ("\\r", stream); | |
314 | break; | |
315 | case '\033': | |
316 | fputs_filtered ("\\e", stream); | |
317 | break; | |
318 | case '\007': | |
319 | fputs_filtered ("\\a", stream); | |
320 | break; | |
321 | default: | |
322 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
323 | break; | |
324 | } | |
325 | } | |
326 | } | |
327 | ||
328 | static void | |
329 | objc_printchar (int c, struct ui_file *stream) | |
330 | { | |
331 | fputs_filtered ("'", stream); | |
332 | objc_emit_char (c, stream, '\''); | |
333 | fputs_filtered ("'", stream); | |
334 | } | |
335 | ||
d2e6263c MS |
336 | /* Print the character string STRING, printing at most LENGTH |
337 | characters. Printing stops early if the number hits print_max; | |
338 | repeat counts are printed as appropriate. Print ellipses at the | |
339 | end if we had to stop before printing LENGTH characters, or if | |
340 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
341 | |
342 | static void | |
fc1a4b47 | 343 | objc_printstr (struct ui_file *stream, const gdb_byte *string, |
36e53c63 | 344 | unsigned int length, int width, int force_ellipses) |
b81654f1 | 345 | { |
f86f5ca3 | 346 | unsigned int i; |
b81654f1 MS |
347 | unsigned int things_printed = 0; |
348 | int in_quotes = 0; | |
349 | int need_comma = 0; | |
b81654f1 MS |
350 | |
351 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
352 | the last byte of it is a null, we don't print that, in |
353 | traditional C style. */ | |
b81654f1 MS |
354 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
355 | length--; | |
356 | ||
357 | if (length == 0) | |
358 | { | |
359 | fputs_filtered ("\"\"", stream); | |
360 | return; | |
361 | } | |
362 | ||
363 | for (i = 0; i < length && things_printed < print_max; ++i) | |
364 | { | |
d2e6263c MS |
365 | /* Position of the character we are examining to see whether it |
366 | is repeated. */ | |
b81654f1 MS |
367 | unsigned int rep1; |
368 | /* Number of repetitions we have detected so far. */ | |
369 | unsigned int reps; | |
370 | ||
371 | QUIT; | |
372 | ||
373 | if (need_comma) | |
374 | { | |
375 | fputs_filtered (", ", stream); | |
376 | need_comma = 0; | |
377 | } | |
378 | ||
379 | rep1 = i + 1; | |
380 | reps = 1; | |
381 | while (rep1 < length && string[rep1] == string[i]) | |
382 | { | |
383 | ++rep1; | |
384 | ++reps; | |
385 | } | |
386 | ||
387 | if (reps > repeat_count_threshold) | |
388 | { | |
389 | if (in_quotes) | |
390 | { | |
391 | if (inspect_it) | |
392 | fputs_filtered ("\\\", ", stream); | |
393 | else | |
394 | fputs_filtered ("\", ", stream); | |
395 | in_quotes = 0; | |
396 | } | |
397 | objc_printchar (string[i], stream); | |
398 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
399 | i = rep1 - 1; | |
400 | things_printed += repeat_count_threshold; | |
401 | need_comma = 1; | |
402 | } | |
403 | else | |
404 | { | |
405 | if (!in_quotes) | |
406 | { | |
407 | if (inspect_it) | |
408 | fputs_filtered ("\\\"", stream); | |
409 | else | |
410 | fputs_filtered ("\"", stream); | |
411 | in_quotes = 1; | |
412 | } | |
413 | objc_emit_char (string[i], stream, '"'); | |
414 | ++things_printed; | |
415 | } | |
416 | } | |
417 | ||
418 | /* Terminate the quotes if necessary. */ | |
419 | if (in_quotes) | |
420 | { | |
421 | if (inspect_it) | |
422 | fputs_filtered ("\\\"", stream); | |
423 | else | |
424 | fputs_filtered ("\"", stream); | |
425 | } | |
426 | ||
427 | if (force_ellipses || i < length) | |
428 | fputs_filtered ("...", stream); | |
429 | } | |
430 | ||
f636b87d AF |
431 | /* Determine if we are currently in the Objective-C dispatch function. |
432 | If so, get the address of the method function that the dispatcher | |
433 | would call and use that as the function to step into instead. Also | |
434 | skip over the trampoline for the function (if any). This is better | |
435 | for the user since they are only interested in stepping into the | |
436 | method function anyway. */ | |
437 | static CORE_ADDR | |
52f729a7 | 438 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
f636b87d AF |
439 | { |
440 | CORE_ADDR real_stop_pc; | |
441 | CORE_ADDR method_stop_pc; | |
442 | ||
52f729a7 UW |
443 | real_stop_pc = gdbarch_skip_trampoline_code |
444 | (current_gdbarch, frame, stop_pc); | |
f636b87d AF |
445 | |
446 | if (real_stop_pc != 0) | |
447 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
448 | else | |
449 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
450 | ||
451 | if (method_stop_pc) | |
452 | { | |
e76f05fa | 453 | real_stop_pc = gdbarch_skip_trampoline_code |
52f729a7 | 454 | (current_gdbarch, frame, method_stop_pc); |
f636b87d AF |
455 | if (real_stop_pc == 0) |
456 | real_stop_pc = method_stop_pc; | |
457 | } | |
458 | ||
459 | return real_stop_pc; | |
460 | } | |
461 | ||
b81654f1 MS |
462 | |
463 | /* Table mapping opcodes into strings for printing operators | |
464 | and precedences of the operators. */ | |
465 | ||
466 | static const struct op_print objc_op_print_tab[] = | |
467 | { | |
468 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
469 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
470 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
471 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
472 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
473 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
474 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
475 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
476 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
477 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
478 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
479 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
480 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
481 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
482 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
483 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
484 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
485 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
486 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
487 | {"%", BINOP_REM, PREC_MUL, 0}, | |
488 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
489 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
490 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
491 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
492 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
493 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
494 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
495 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
496 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 497 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
498 | }; |
499 | ||
b81654f1 | 500 | const struct language_defn objc_language_defn = { |
d2e6263c | 501 | "objective-c", /* Language name */ |
b81654f1 | 502 | language_objc, |
b81654f1 MS |
503 | range_check_off, |
504 | type_check_off, | |
505 | case_sensitive_on, | |
7ca2d3a3 | 506 | array_row_major, |
9a044a89 | 507 | macro_expansion_c, |
5f9769d1 | 508 | &exp_descriptor_standard, |
b81654f1 MS |
509 | objc_parse, |
510 | objc_error, | |
e85c3284 | 511 | null_post_parser, |
b81654f1 MS |
512 | objc_printchar, /* Print a character constant */ |
513 | objc_printstr, /* Function to print string constant */ | |
514 | objc_emit_char, | |
b81654f1 | 515 | c_print_type, /* Print a type using appropriate syntax */ |
5c6ce71d | 516 | c_print_typedef, /* Print a typedef using appropriate syntax */ |
b81654f1 MS |
517 | c_val_print, /* Print a value using appropriate syntax */ |
518 | c_value_print, /* Print a top-level value */ | |
f636b87d | 519 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
2b2d9e11 | 520 | "self", /* name_of_this */ |
5f9a71c3 | 521 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ |
b368761e | 522 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 523 | objc_demangle, /* Language specific symbol demangler */ |
31c27f77 | 524 | NULL, /* Language specific class_name_from_physname */ |
d2e6263c MS |
525 | objc_op_print_tab, /* Expression operators for printing */ |
526 | 1, /* C-style arrays */ | |
b81654f1 | 527 | 0, /* String lower bound */ |
6084f43a | 528 | default_word_break_characters, |
41d27058 | 529 | default_make_symbol_completion_list, |
cad351d1 | 530 | c_language_arch_info, |
e79af960 | 531 | default_print_array_index, |
41f1b697 | 532 | default_pass_by_reference, |
b81654f1 MS |
533 | LANG_MAGIC |
534 | }; | |
535 | ||
536 | /* | |
537 | * ObjC: | |
d2e6263c | 538 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
539 | */ |
540 | ||
d2e6263c | 541 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
542 | { |
543 | struct selname *next; | |
544 | char *msglist_sel; | |
545 | int msglist_len; | |
546 | }; | |
547 | ||
548 | static int msglist_len; | |
549 | static struct selname *selname_chain; | |
550 | static char *msglist_sel; | |
551 | ||
552 | void | |
553 | start_msglist(void) | |
554 | { | |
f86f5ca3 | 555 | struct selname *new = |
b81654f1 MS |
556 | (struct selname *) xmalloc (sizeof (struct selname)); |
557 | ||
558 | new->next = selname_chain; | |
559 | new->msglist_len = msglist_len; | |
560 | new->msglist_sel = msglist_sel; | |
561 | msglist_len = 0; | |
562 | msglist_sel = (char *)xmalloc(1); | |
563 | *msglist_sel = 0; | |
564 | selname_chain = new; | |
565 | } | |
566 | ||
567 | void | |
568 | add_msglist(struct stoken *str, int addcolon) | |
569 | { | |
570 | char *s, *p; | |
571 | int len, plen; | |
572 | ||
d2e6263c MS |
573 | if (str == 0) { /* Unnamed arg, or... */ |
574 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
575 | msglist_len++; |
576 | return; | |
577 | } | |
578 | p = ""; | |
579 | plen = 0; | |
580 | } else { | |
581 | p = str->ptr; | |
582 | plen = str->length; | |
583 | } | |
584 | len = plen + strlen(msglist_sel) + 2; | |
585 | s = (char *)xmalloc(len); | |
586 | strcpy(s, msglist_sel); | |
587 | strncat(s, p, plen); | |
7248f48e | 588 | xfree(msglist_sel); |
b81654f1 MS |
589 | msglist_sel = s; |
590 | if (addcolon) { | |
591 | s[len-2] = ':'; | |
592 | s[len-1] = 0; | |
593 | msglist_len++; | |
594 | } else | |
595 | s[len-2] = '\0'; | |
596 | } | |
597 | ||
598 | int | |
599 | end_msglist(void) | |
600 | { | |
f86f5ca3 PH |
601 | int val = msglist_len; |
602 | struct selname *sel = selname_chain; | |
603 | char *p = msglist_sel; | |
c253954e | 604 | CORE_ADDR selid; |
b81654f1 MS |
605 | |
606 | selname_chain = sel->next; | |
607 | msglist_len = sel->msglist_len; | |
608 | msglist_sel = sel->msglist_sel; | |
609 | selid = lookup_child_selector(p); | |
610 | if (!selid) | |
8a3fe4f8 | 611 | error (_("Can't find selector \"%s\""), p); |
b81654f1 | 612 | write_exp_elt_longcst (selid); |
7248f48e | 613 | xfree(p); |
d2e6263c | 614 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 615 | xfree(sel); |
b81654f1 MS |
616 | |
617 | return val; | |
618 | } | |
619 | ||
620 | /* | |
621 | * Function: specialcmp (char *a, char *b) | |
622 | * | |
623 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 624 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
625 | */ |
626 | ||
b9362cc7 AC |
627 | static int |
628 | specialcmp (char *a, char *b) | |
b81654f1 MS |
629 | { |
630 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
631 | { | |
632 | if (*a != *b) | |
633 | return *a - *b; | |
634 | a++, b++; | |
635 | } | |
636 | if (*a && *a != ' ' && *a != ']') | |
637 | return 1; /* a is longer therefore greater */ | |
638 | if (*b && *b != ' ' && *b != ']') | |
639 | return -1; /* a is shorter therefore lesser */ | |
640 | return 0; /* a and b are identical */ | |
641 | } | |
642 | ||
643 | /* | |
36e53c63 | 644 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 645 | * |
d2e6263c MS |
646 | * Comparison function for use with qsort. Arguments are symbols or |
647 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
648 | */ |
649 | ||
650 | static int | |
36e53c63 | 651 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
652 | { |
653 | char *aname, *bname; | |
654 | ||
de5ad195 DC |
655 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
656 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 657 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 658 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 659 | |
7248f48e AF |
660 | aname = strchr(aname, ' '); |
661 | bname = strchr(bname, ' '); | |
662 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 663 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
664 | |
665 | return specialcmp (aname+1, bname+1); | |
666 | } | |
667 | ||
668 | /* | |
669 | * Function: selectors_info (regexp, from_tty) | |
670 | * | |
d2e6263c MS |
671 | * Implements the "Info selectors" command. Takes an optional regexp |
672 | * arg. Lists all objective c selectors that match the regexp. Works | |
673 | * by grepping thru all symbols for objective c methods. Output list | |
674 | * is sorted and uniqued. | |
b81654f1 MS |
675 | */ |
676 | ||
677 | static void | |
678 | selectors_info (char *regexp, int from_tty) | |
679 | { | |
680 | struct objfile *objfile; | |
681 | struct minimal_symbol *msymbol; | |
682 | char *name; | |
683 | char *val; | |
684 | int matches = 0; | |
685 | int maxlen = 0; | |
686 | int ix; | |
687 | char myregexp[2048]; | |
688 | char asel[256]; | |
689 | struct symbol **sym_arr; | |
690 | int plusminus = 0; | |
691 | ||
692 | if (regexp == NULL) | |
d2e6263c | 693 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
694 | else |
695 | { | |
d2e6263c MS |
696 | if (*regexp == '+' || *regexp == '-') |
697 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
698 | plusminus = *regexp++; |
699 | while (*regexp == ' ' || *regexp == '\t') | |
700 | regexp++; | |
701 | } | |
702 | if (*regexp == '\0') | |
703 | strcpy(myregexp, ".*]"); | |
704 | else | |
705 | { | |
706 | strcpy(myregexp, regexp); | |
707 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
708 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
709 | else | |
710 | strcat(myregexp, ".*]"); | |
711 | } | |
712 | } | |
713 | ||
714 | if (regexp != NULL) | |
5e488a7b AC |
715 | { |
716 | val = re_comp (myregexp); | |
717 | if (val != 0) | |
8a3fe4f8 | 718 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 719 | } |
b81654f1 | 720 | |
d2e6263c | 721 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
722 | ALL_MSYMBOLS (objfile, msymbol) |
723 | { | |
724 | QUIT; | |
36018d2e | 725 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
726 | if (name && |
727 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 728 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 729 | { |
d2e6263c | 730 | /* Filter for class/instance methods. */ |
b81654f1 | 731 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
732 | continue; |
733 | /* Find selector part. */ | |
734 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
735 | if (regexp == NULL || re_exec(++name) != 0) |
736 | { | |
737 | char *mystart = name; | |
738 | char *myend = (char *) strchr(mystart, ']'); | |
739 | ||
740 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 741 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
742 | matches++; |
743 | } | |
744 | } | |
745 | } | |
746 | if (matches) | |
747 | { | |
a3f17187 | 748 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
749 | regexp ? regexp : "*"); |
750 | ||
751 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
752 | matches = 0; | |
753 | ALL_MSYMBOLS (objfile, msymbol) | |
754 | { | |
755 | QUIT; | |
36018d2e | 756 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
757 | if (name && |
758 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 759 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 760 | { |
d2e6263c | 761 | /* Filter for class/instance methods. */ |
b81654f1 | 762 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
763 | continue; |
764 | /* Find selector part. */ | |
765 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
766 | if (regexp == NULL || re_exec(++name) != 0) |
767 | sym_arr[matches++] = (struct symbol *) msymbol; | |
768 | } | |
769 | } | |
770 | ||
771 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
772 | compare_selectors); | |
d2e6263c MS |
773 | /* Prevent compare on first iteration. */ |
774 | asel[0] = 0; | |
775 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
776 | { |
777 | char *p = asel; | |
778 | ||
779 | QUIT; | |
36018d2e | 780 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
781 | name = strchr (name, ' ') + 1; |
782 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 783 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 784 | |
d2e6263c MS |
785 | /* Copy selector part. */ |
786 | while (*name && *name != ']') | |
b81654f1 MS |
787 | *p++ = *name++; |
788 | *p++ = '\0'; | |
d2e6263c MS |
789 | /* Print in columns. */ |
790 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
791 | } |
792 | begin_line(); | |
793 | } | |
794 | else | |
a3f17187 | 795 | printf_filtered (_("No selectors matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
796 | } |
797 | ||
798 | /* | |
36e53c63 | 799 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 800 | * |
d2e6263c MS |
801 | * Comparison function for use with qsort. Arguments are symbols or |
802 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
803 | */ |
804 | ||
805 | static int | |
36e53c63 | 806 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
807 | { |
808 | char *aname, *bname; | |
809 | ||
de5ad195 DC |
810 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
811 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 812 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 813 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
814 | |
815 | return specialcmp (aname+1, bname+1); | |
816 | } | |
817 | ||
818 | /* | |
819 | * Function: classes_info(regexp, from_tty) | |
820 | * | |
821 | * Implements the "info classes" command for objective c classes. | |
822 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
823 | * Works by grepping thru the list of objective c methods. List will |
824 | * be sorted and uniqued (since one class may have many methods). | |
825 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
826 | */ |
827 | ||
828 | static void | |
829 | classes_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 aclass[256]; | |
840 | struct symbol **sym_arr; | |
841 | ||
842 | if (regexp == NULL) | |
d2e6263c | 843 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
844 | else |
845 | { | |
846 | strcpy(myregexp, regexp); | |
847 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 848 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
849 | myregexp[strlen(myregexp) - 1] = ' '; |
850 | else | |
851 | strcat(myregexp, ".* "); | |
852 | } | |
853 | ||
854 | if (regexp != NULL) | |
5e488a7b AC |
855 | { |
856 | val = re_comp (myregexp); | |
857 | if (val != 0) | |
8a3fe4f8 | 858 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 859 | } |
b81654f1 | 860 | |
d2e6263c | 861 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
862 | ALL_MSYMBOLS (objfile, msymbol) |
863 | { | |
864 | QUIT; | |
36018d2e | 865 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
866 | if (name && |
867 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 868 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
869 | if (regexp == NULL || re_exec(name+2) != 0) |
870 | { | |
d2e6263c MS |
871 | /* Compute length of classname part. */ |
872 | char *mystart = name + 2; | |
b81654f1 MS |
873 | char *myend = (char *) strchr(mystart, ' '); |
874 | ||
875 | if (myend && (myend - mystart > maxlen)) | |
876 | maxlen = myend - mystart; | |
877 | matches++; | |
878 | } | |
879 | } | |
880 | if (matches) | |
881 | { | |
a3f17187 | 882 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 MS |
883 | regexp ? regexp : "*"); |
884 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
885 | matches = 0; | |
886 | ALL_MSYMBOLS (objfile, msymbol) | |
887 | { | |
888 | QUIT; | |
36018d2e | 889 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
890 | if (name && |
891 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 892 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
893 | if (regexp == NULL || re_exec(name+2) != 0) |
894 | sym_arr[matches++] = (struct symbol *) msymbol; | |
895 | } | |
896 | ||
897 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
898 | compare_classes); | |
d2e6263c MS |
899 | /* Prevent compare on first iteration. */ |
900 | aclass[0] = 0; | |
901 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
902 | { |
903 | char *p = aclass; | |
904 | ||
905 | QUIT; | |
36018d2e | 906 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
907 | name += 2; |
908 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 909 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 910 | |
d2e6263c MS |
911 | /* Copy class part of method name. */ |
912 | while (*name && *name != ' ') | |
b81654f1 MS |
913 | *p++ = *name++; |
914 | *p++ = '\0'; | |
d2e6263c MS |
915 | /* Print in columns. */ |
916 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
917 | } |
918 | begin_line(); | |
919 | } | |
920 | else | |
a3f17187 | 921 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
922 | } |
923 | ||
924 | /* | |
925 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
926 | * | |
927 | * Input: a string representing a selector | |
928 | * a pointer to an array of symbol pointers | |
929 | * possibly a pointer to a symbol found by the caller. | |
930 | * | |
d2e6263c MS |
931 | * Output: number of methods that implement that selector. Side |
932 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 933 | * |
d2e6263c MS |
934 | * By analogy with function "find_methods" (symtab.c), builds a list |
935 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
936 | * (symtab.c) can list them and ask the user to choose one or more. | |
937 | * In this case the matches are objective c methods | |
938 | * ("implementations") matching an objective c selector. | |
b81654f1 | 939 | * |
d2e6263c MS |
940 | * Note that it is possible for a normal (c-style) function to have |
941 | * the same name as an objective c selector. To prevent the selector | |
942 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
943 | * search for such a function first, and if it finds one, pass it in | |
944 | * to us. We will then integrate it into the list. We also search | |
945 | * for one here, among the minsyms. | |
b81654f1 | 946 | * |
d2e6263c MS |
947 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
948 | * into two parts: debuggable (struct symbol) syms, and | |
949 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
950 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
951 | * be the index of the first non-debuggable one). | |
b81654f1 MS |
952 | */ |
953 | ||
954 | /* | |
955 | * Function: total_number_of_imps (char *selector); | |
956 | * | |
957 | * Input: a string representing a selector | |
958 | * Output: number of methods that implement that selector. | |
959 | * | |
d2e6263c | 960 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 961 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
962 | * matching the input, and to allocate an array of pointers to them |
963 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
964 | */ |
965 | ||
966 | char * | |
967 | parse_selector (char *method, char **selector) | |
968 | { | |
969 | char *s1 = NULL; | |
970 | char *s2 = NULL; | |
971 | int found_quote = 0; | |
972 | ||
973 | char *nselector = NULL; | |
974 | ||
e8f3fcdd | 975 | gdb_assert (selector != NULL); |
b81654f1 MS |
976 | |
977 | s1 = method; | |
978 | ||
979 | while (isspace (*s1)) | |
980 | s1++; | |
981 | if (*s1 == '\'') | |
982 | { | |
983 | found_quote = 1; | |
984 | s1++; | |
985 | } | |
986 | while (isspace (*s1)) | |
987 | s1++; | |
988 | ||
989 | nselector = s1; | |
990 | s2 = s1; | |
991 | ||
992 | for (;;) { | |
993 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
994 | *s1++ = *s2; | |
995 | else if (isspace (*s2)) | |
996 | ; | |
997 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
998 | break; | |
999 | else | |
1000 | return NULL; | |
1001 | s2++; | |
1002 | } | |
1003 | *s1++ = '\0'; | |
1004 | ||
1005 | while (isspace (*s2)) | |
1006 | s2++; | |
1007 | if (found_quote) | |
1008 | { | |
1009 | if (*s2 == '\'') | |
1010 | s2++; | |
1011 | while (isspace (*s2)) | |
1012 | s2++; | |
1013 | } | |
1014 | ||
1015 | if (selector != NULL) | |
1016 | *selector = nselector; | |
1017 | ||
1018 | return s2; | |
1019 | } | |
1020 | ||
1021 | char * | |
d2e6263c MS |
1022 | parse_method (char *method, char *type, char **class, |
1023 | char **category, char **selector) | |
b81654f1 MS |
1024 | { |
1025 | char *s1 = NULL; | |
1026 | char *s2 = NULL; | |
1027 | int found_quote = 0; | |
1028 | ||
1029 | char ntype = '\0'; | |
1030 | char *nclass = NULL; | |
1031 | char *ncategory = NULL; | |
1032 | char *nselector = NULL; | |
1033 | ||
e8f3fcdd AC |
1034 | gdb_assert (type != NULL); |
1035 | gdb_assert (class != NULL); | |
1036 | gdb_assert (category != NULL); | |
1037 | gdb_assert (selector != NULL); | |
b81654f1 MS |
1038 | |
1039 | s1 = method; | |
1040 | ||
1041 | while (isspace (*s1)) | |
1042 | s1++; | |
1043 | if (*s1 == '\'') | |
1044 | { | |
1045 | found_quote = 1; | |
1046 | s1++; | |
1047 | } | |
1048 | while (isspace (*s1)) | |
1049 | s1++; | |
1050 | ||
1051 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1052 | ntype = *s1++; | |
1053 | ||
1054 | while (isspace (*s1)) | |
1055 | s1++; | |
1056 | ||
1057 | if (*s1 != '[') | |
1058 | return NULL; | |
1059 | s1++; | |
1060 | ||
1061 | nclass = s1; | |
1062 | while (isalnum (*s1) || (*s1 == '_')) | |
1063 | s1++; | |
1064 | ||
1065 | s2 = s1; | |
1066 | while (isspace (*s2)) | |
1067 | s2++; | |
1068 | ||
1069 | if (*s2 == '(') | |
1070 | { | |
1071 | s2++; | |
1072 | while (isspace (*s2)) | |
1073 | s2++; | |
1074 | ncategory = s2; | |
1075 | while (isalnum (*s2) || (*s2 == '_')) | |
1076 | s2++; | |
1077 | *s2++ = '\0'; | |
1078 | } | |
1079 | ||
d2e6263c | 1080 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1081 | *s1++ = '\0'; |
1082 | ||
1083 | nselector = s2; | |
1084 | s1 = s2; | |
1085 | ||
1086 | for (;;) { | |
1087 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1088 | *s1++ = *s2; | |
1089 | else if (isspace (*s2)) | |
1090 | ; | |
1091 | else if (*s2 == ']') | |
1092 | break; | |
1093 | else | |
1094 | return NULL; | |
1095 | s2++; | |
1096 | } | |
1097 | *s1++ = '\0'; | |
1098 | s2++; | |
1099 | ||
1100 | while (isspace (*s2)) | |
1101 | s2++; | |
1102 | if (found_quote) | |
1103 | { | |
1104 | if (*s2 != '\'') | |
1105 | return NULL; | |
1106 | s2++; | |
1107 | while (isspace (*s2)) | |
1108 | s2++; | |
1109 | } | |
1110 | ||
1111 | if (type != NULL) | |
1112 | *type = ntype; | |
1113 | if (class != NULL) | |
1114 | *class = nclass; | |
1115 | if (category != NULL) | |
1116 | *category = ncategory; | |
1117 | if (selector != NULL) | |
1118 | *selector = nselector; | |
1119 | ||
1120 | return s2; | |
1121 | } | |
1122 | ||
2f9a90b4 | 1123 | static void |
d2e6263c MS |
1124 | find_methods (struct symtab *symtab, char type, |
1125 | const char *class, const char *category, | |
1126 | const char *selector, struct symbol **syms, | |
1127 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1128 | { |
1129 | struct objfile *objfile = NULL; | |
1130 | struct minimal_symbol *msymbol = NULL; | |
1131 | struct block *block = NULL; | |
1132 | struct symbol *sym = NULL; | |
1133 | ||
1134 | char *symname = NULL; | |
1135 | ||
1136 | char ntype = '\0'; | |
1137 | char *nclass = NULL; | |
1138 | char *ncategory = NULL; | |
1139 | char *nselector = NULL; | |
1140 | ||
1141 | unsigned int csym = 0; | |
1142 | unsigned int cdebug = 0; | |
1143 | ||
1144 | static char *tmp = NULL; | |
1145 | static unsigned int tmplen = 0; | |
1146 | ||
e8f3fcdd AC |
1147 | gdb_assert (nsym != NULL); |
1148 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1149 | |
1150 | if (symtab) | |
1151 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1152 | ||
1153 | ALL_MSYMBOLS (objfile, msymbol) | |
1154 | { | |
1155 | QUIT; | |
1156 | ||
712f90be TT |
1157 | if ((MSYMBOL_TYPE (msymbol) != mst_text) |
1158 | && (MSYMBOL_TYPE (msymbol) != mst_file_text)) | |
d2e6263c | 1159 | /* Not a function or method. */ |
b81654f1 MS |
1160 | continue; |
1161 | ||
1162 | if (symtab) | |
8da065d5 DC |
1163 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) || |
1164 | (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block))) | |
d2e6263c | 1165 | /* Not in the specified symtab. */ |
b81654f1 MS |
1166 | continue; |
1167 | ||
36018d2e | 1168 | symname = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
1169 | if (symname == NULL) |
1170 | continue; | |
1171 | ||
1172 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
d2e6263c | 1173 | /* Not a method name. */ |
b81654f1 MS |
1174 | continue; |
1175 | ||
1176 | while ((strlen (symname) + 1) >= tmplen) | |
1177 | { | |
1178 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1179 | tmp = xrealloc (tmp, tmplen); | |
1180 | } | |
1181 | strcpy (tmp, symname); | |
1182 | ||
1183 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1184 | continue; | |
1185 | ||
1186 | if ((type != '\0') && (ntype != type)) | |
1187 | continue; | |
1188 | ||
d2e6263c MS |
1189 | if ((class != NULL) |
1190 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
b81654f1 MS |
1191 | continue; |
1192 | ||
d2e6263c MS |
1193 | if ((category != NULL) && |
1194 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
b81654f1 MS |
1195 | continue; |
1196 | ||
d2e6263c MS |
1197 | if ((selector != NULL) && |
1198 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
b81654f1 MS |
1199 | continue; |
1200 | ||
1201 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1202 | if (sym != NULL) | |
1203 | { | |
36018d2e | 1204 | const char *newsymname = SYMBOL_NATURAL_NAME (sym); |
b81654f1 | 1205 | |
b81654f1 MS |
1206 | if (strcmp (symname, newsymname) == 0) |
1207 | { | |
d2e6263c MS |
1208 | /* Found a high-level method sym: swap it into the |
1209 | lower part of sym_arr (below num_debuggable). */ | |
b81654f1 MS |
1210 | if (syms != NULL) |
1211 | { | |
1212 | syms[csym] = syms[cdebug]; | |
1213 | syms[cdebug] = sym; | |
1214 | } | |
1215 | csym++; | |
1216 | cdebug++; | |
1217 | } | |
1218 | else | |
1219 | { | |
d2e6263c MS |
1220 | warning ( |
1221 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
b81654f1 MS |
1222 | newsymname, symname); |
1223 | if (syms != NULL) | |
1224 | syms[csym] = (struct symbol *) msymbol; | |
1225 | csym++; | |
1226 | } | |
1227 | } | |
1228 | else | |
1229 | { | |
d2e6263c | 1230 | /* Found a non-debuggable method symbol. */ |
b81654f1 MS |
1231 | if (syms != NULL) |
1232 | syms[csym] = (struct symbol *) msymbol; | |
1233 | csym++; | |
1234 | } | |
1235 | } | |
1236 | ||
1237 | if (nsym != NULL) | |
1238 | *nsym = csym; | |
1239 | if (ndebug != NULL) | |
1240 | *ndebug = cdebug; | |
1241 | } | |
1242 | ||
1243 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1244 | char *method, struct symbol **syms, |
1245 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1246 | { |
1247 | char type = '\0'; | |
1248 | char *class = NULL; | |
1249 | char *category = NULL; | |
1250 | char *selector = NULL; | |
1251 | ||
1252 | unsigned int csym = 0; | |
1253 | unsigned int cdebug = 0; | |
1254 | ||
1255 | unsigned int ncsym = 0; | |
1256 | unsigned int ncdebug = 0; | |
1257 | ||
1258 | char *buf = NULL; | |
1259 | char *tmp = NULL; | |
1260 | ||
e8f3fcdd AC |
1261 | gdb_assert (nsym != NULL); |
1262 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1263 | |
1264 | if (nsym != NULL) | |
1265 | *nsym = 0; | |
1266 | if (ndebug != NULL) | |
1267 | *ndebug = 0; | |
1268 | ||
1269 | buf = (char *) alloca (strlen (method) + 1); | |
1270 | strcpy (buf, method); | |
1271 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1272 | ||
1273 | if (tmp == NULL) { | |
1274 | ||
b81654f1 MS |
1275 | struct symbol *sym = NULL; |
1276 | struct minimal_symbol *msym = NULL; | |
1277 | ||
1278 | strcpy (buf, method); | |
1279 | tmp = parse_selector (buf, &selector); | |
1280 | ||
1281 | if (tmp == NULL) | |
1282 | return NULL; | |
1283 | ||
2570f2b7 | 1284 | sym = lookup_symbol (selector, block, VAR_DOMAIN, 0); |
b81654f1 MS |
1285 | if (sym != NULL) |
1286 | { | |
1287 | if (syms) | |
1288 | syms[csym] = sym; | |
1289 | csym++; | |
1290 | cdebug++; | |
1291 | } | |
1292 | ||
1293 | if (sym == NULL) | |
1294 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1295 | ||
1296 | if (msym != NULL) | |
1297 | { | |
1298 | if (syms) | |
36e53c63 | 1299 | syms[csym] = (struct symbol *)msym; |
b81654f1 MS |
1300 | csym++; |
1301 | } | |
1302 | } | |
1303 | ||
1304 | if (syms != NULL) | |
d2e6263c MS |
1305 | find_methods (symtab, type, class, category, selector, |
1306 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1307 | else |
d2e6263c MS |
1308 | find_methods (symtab, type, class, category, selector, |
1309 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1310 | |
d2e6263c | 1311 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1312 | if (ncsym == 0 && ncdebug == 0) |
1313 | return method; | |
1314 | ||
1315 | /* Take debug symbols from the second batch of symbols and swap them | |
1316 | * with debug symbols from the first batch. Repeat until either the | |
1317 | * second section is out of debug symbols or the first section is | |
1318 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1319 | * packed to the beginning of the buffer. |
1320 | */ | |
b81654f1 MS |
1321 | |
1322 | if (syms != NULL) | |
1323 | { | |
1324 | while ((cdebug < csym) && (ncdebug > 0)) | |
1325 | { | |
1326 | struct symbol *s = NULL; | |
d2e6263c MS |
1327 | /* First non-debugging symbol. */ |
1328 | unsigned int i = cdebug; | |
1329 | /* Last of second batch of debug symbols. */ | |
1330 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1331 | |
1332 | s = syms[j]; | |
1333 | syms[j] = syms[i]; | |
1334 | syms[i] = s; | |
1335 | ||
d2e6263c MS |
1336 | /* We've moved a symbol from the second debug section to the |
1337 | first one. */ | |
b81654f1 MS |
1338 | cdebug++; |
1339 | ncdebug--; | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | csym += ncsym; | |
1344 | cdebug += ncdebug; | |
1345 | ||
1346 | if (nsym != NULL) | |
1347 | *nsym = csym; | |
1348 | if (ndebug != NULL) | |
1349 | *ndebug = cdebug; | |
1350 | ||
1351 | if (syms == NULL) | |
1352 | return method + (tmp - buf); | |
1353 | ||
1354 | if (csym > 1) | |
1355 | { | |
d2e6263c | 1356 | /* Sort debuggable symbols. */ |
b81654f1 | 1357 | if (cdebug > 1) |
d2e6263c MS |
1358 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1359 | compare_classes); | |
b81654f1 | 1360 | |
d2e6263c | 1361 | /* Sort minimal_symbols. */ |
b81654f1 | 1362 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1363 | qsort (&syms[cdebug], csym - cdebug, |
1364 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1365 | } |
d2e6263c MS |
1366 | /* Terminate the sym_arr list. */ |
1367 | syms[csym] = 0; | |
b81654f1 MS |
1368 | |
1369 | return method + (tmp - buf); | |
1370 | } | |
1371 | ||
b9362cc7 | 1372 | static void |
b81654f1 MS |
1373 | print_object_command (char *args, int from_tty) |
1374 | { | |
1375 | struct value *object, *function, *description; | |
36e53c63 | 1376 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1377 | int i = 0; |
22a44745 | 1378 | gdb_byte c = 0; |
b81654f1 MS |
1379 | |
1380 | if (!args || !*args) | |
d2e6263c MS |
1381 | error ( |
1382 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1383 | |
1384 | { | |
1385 | struct expression *expr = parse_expression (args); | |
f86f5ca3 | 1386 | struct cleanup *old_chain = |
d2e6263c | 1387 | make_cleanup (free_current_contents, &expr); |
b81654f1 MS |
1388 | int pc = 0; |
1389 | ||
5f9769d1 | 1390 | object = expr->language_defn->la_exp_desc->evaluate_exp |
d4dbb9c7 | 1391 | (builtin_type (expr->gdbarch)->builtin_data_ptr, expr, &pc, EVAL_NORMAL); |
b81654f1 MS |
1392 | do_cleanups (old_chain); |
1393 | } | |
1394 | ||
36e53c63 AF |
1395 | /* Validate the address for sanity. */ |
1396 | object_addr = value_as_long (object); | |
1397 | read_memory (object_addr, &c, 1); | |
1398 | ||
3e3b026f | 1399 | function = find_function_in_inferior ("_NSPrintForDebugger", NULL); |
36e53c63 | 1400 | if (function == NULL) |
8a3fe4f8 | 1401 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 MS |
1402 | |
1403 | description = call_function_by_hand (function, 1, &object); | |
1404 | ||
7248f48e AF |
1405 | string_addr = value_as_long (description); |
1406 | if (string_addr == 0) | |
8a3fe4f8 | 1407 | error (_("object returns null description")); |
b81654f1 MS |
1408 | |
1409 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1410 | if (c != 0) |
b81654f1 | 1411 | do |
d2e6263c | 1412 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1413 | QUIT; |
1414 | printf_filtered ("%c", c); | |
1415 | read_memory (string_addr + i++, &c, 1); | |
1416 | } while (c != 0); | |
1417 | else | |
a3f17187 | 1418 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1419 | printf_filtered ("\n"); |
1420 | } | |
1421 | ||
d2e6263c MS |
1422 | /* The data structure 'methcalls' is used to detect method calls (thru |
1423 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1424 | * and ultimately find the method being called. | |
b81654f1 MS |
1425 | */ |
1426 | ||
1427 | struct objc_methcall { | |
1428 | char *name; | |
d2e6263c | 1429 | /* Return instance method to be called. */ |
36e53c63 | 1430 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1431 | /* Start of pc range corresponding to method invocation. */ |
1432 | CORE_ADDR begin; | |
1433 | /* End of pc range corresponding to method invocation. */ | |
1434 | CORE_ADDR end; | |
b81654f1 MS |
1435 | }; |
1436 | ||
d2e6263c MS |
1437 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1438 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1439 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1440 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1441 | |
1442 | static struct objc_methcall methcalls[] = { | |
1443 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1444 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1445 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1446 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1447 | { "_objc_getClass", NULL, 0, 0}, | |
1448 | { "_objc_getMetaClass", NULL, 0, 0} | |
1449 | }; | |
1450 | ||
1451 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1452 | ||
d2e6263c MS |
1453 | /* The following function, "find_objc_msgsend", fills in the data |
1454 | * structure "objc_msgs" by finding the addresses of each of the | |
1455 | * (currently four) functions that it holds (of which objc_msgSend is | |
1456 | * the first). This must be called each time symbols are loaded, in | |
1457 | * case the functions have moved for some reason. | |
b81654f1 MS |
1458 | */ |
1459 | ||
b9362cc7 | 1460 | static void |
b81654f1 MS |
1461 | find_objc_msgsend (void) |
1462 | { | |
1463 | unsigned int i; | |
1464 | for (i = 0; i < nmethcalls; i++) { | |
1465 | ||
1466 | struct minimal_symbol *func; | |
1467 | ||
d2e6263c | 1468 | /* Try both with and without underscore. */ |
b81654f1 MS |
1469 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1470 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1471 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1472 | } | |
1473 | if (func == NULL) { | |
1474 | methcalls[i].begin = 0; | |
1475 | methcalls[i].end = 0; | |
1476 | continue; | |
1477 | } | |
1478 | ||
1479 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1480 | do { | |
1481 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1482 | } while (methcalls[i].begin == methcalls[i].end); | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | /* find_objc_msgcall (replaces pc_off_limits) | |
1487 | * | |
d2e6263c MS |
1488 | * ALL that this function now does is to determine whether the input |
1489 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1490 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1491 | * if so, it returns the address of the method that will be called. | |
1492 | * | |
1493 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1494 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1495 | * returning the address of the shlib function that would be called. |
e76f05fa | 1496 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c MS |
1497 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
1498 | * dependent modules. | |
b81654f1 MS |
1499 | */ |
1500 | ||
1501 | struct objc_submethod_helper_data { | |
36e53c63 | 1502 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1503 | CORE_ADDR pc; |
1504 | CORE_ADDR *new_pc; | |
1505 | }; | |
1506 | ||
b9362cc7 | 1507 | static int |
7248f48e | 1508 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1509 | { |
d2e6263c MS |
1510 | struct objc_submethod_helper_data *s = |
1511 | (struct objc_submethod_helper_data *) arg; | |
1512 | ||
1513 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1514 | return 1; |
d2e6263c | 1515 | else |
b81654f1 | 1516 | return 0; |
b81654f1 MS |
1517 | } |
1518 | ||
b9362cc7 | 1519 | static int |
36e53c63 | 1520 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1521 | CORE_ADDR pc, |
1522 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1523 | { |
1524 | struct objc_submethod_helper_data s; | |
1525 | ||
1526 | s.f = f; | |
1527 | s.pc = pc; | |
1528 | s.new_pc = new_pc; | |
1529 | ||
1530 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1531 | (void *) &s, |
d2e6263c MS |
1532 | "Unable to determine target of Objective-C method call (ignoring):\n", |
1533 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1534 | return 1; |
d2e6263c | 1535 | else |
b81654f1 | 1536 | return 0; |
b81654f1 MS |
1537 | } |
1538 | ||
1539 | int | |
1540 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1541 | { | |
1542 | unsigned int i; | |
1543 | ||
1544 | find_objc_msgsend (); | |
5e488a7b AC |
1545 | if (new_pc != NULL) |
1546 | { | |
1547 | *new_pc = 0; | |
1548 | } | |
b81654f1 | 1549 | |
d2e6263c MS |
1550 | for (i = 0; i < nmethcalls; i++) |
1551 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1552 | { | |
1553 | if (methcalls[i].stop_at != NULL) | |
1554 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1555 | pc, new_pc); | |
1556 | else | |
1557 | return 0; | |
b81654f1 | 1558 | } |
d2e6263c | 1559 | |
b81654f1 MS |
1560 | return 0; |
1561 | } | |
1562 | ||
a78f21af | 1563 | extern initialize_file_ftype _initialize_objc_language; /* -Wmissing-prototypes */ |
b9362cc7 | 1564 | |
b81654f1 MS |
1565 | void |
1566 | _initialize_objc_language (void) | |
1567 | { | |
1568 | add_language (&objc_language_defn); | |
d2e6263c | 1569 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1bedd215 | 1570 | _("All Objective-C selectors, or those matching REGEXP.")); |
d2e6263c | 1571 | add_info ("classes", classes_info, /* INFO CLASSES command. */ |
1bedd215 | 1572 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1573 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1574 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1575 | add_com_alias ("po", "print-object", class_vars, 1); |
1576 | } | |
1577 | ||
b81654f1 MS |
1578 | static void |
1579 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1580 | { | |
d2e6263c | 1581 | method->name = read_memory_unsigned_integer (addr + 0, 4); |
b81654f1 | 1582 | method->types = read_memory_unsigned_integer (addr + 4, 4); |
d2e6263c | 1583 | method->imp = read_memory_unsigned_integer (addr + 8, 4); |
b81654f1 MS |
1584 | } |
1585 | ||
1586 | static | |
1587 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1588 | { | |
1589 | return read_memory_unsigned_integer (addr + 4, 4); | |
1590 | } | |
1591 | ||
1592 | static void | |
1593 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1594 | struct objc_method *method) | |
1595 | { | |
e8f3fcdd | 1596 | gdb_assert (num < read_objc_methlist_nmethods (addr)); |
b81654f1 MS |
1597 | read_objc_method (addr + 8 + (12 * num), method); |
1598 | } | |
1599 | ||
1600 | static void | |
1601 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1602 | { | |
1603 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1604 | } | |
1605 | ||
1606 | static void | |
1607 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1608 | { | |
1609 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1610 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1611 | }; | |
1612 | ||
1613 | static void | |
1614 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1615 | { | |
1616 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1617 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1618 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1619 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1620 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1621 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1622 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1623 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1624 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1625 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1626 | } | |
1627 | ||
b9362cc7 | 1628 | static CORE_ADDR |
b81654f1 MS |
1629 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) |
1630 | { | |
1631 | CORE_ADDR subclass = class; | |
1632 | ||
d2e6263c MS |
1633 | while (subclass != 0) |
1634 | { | |
b81654f1 | 1635 | |
d2e6263c MS |
1636 | struct objc_class class_str; |
1637 | unsigned mlistnum = 0; | |
b81654f1 | 1638 | |
d2e6263c | 1639 | read_objc_class (subclass, &class_str); |
b81654f1 | 1640 | |
d2e6263c MS |
1641 | for (;;) |
1642 | { | |
1643 | CORE_ADDR mlist; | |
1644 | unsigned long nmethods; | |
1645 | unsigned long i; | |
b81654f1 | 1646 | |
d2e6263c MS |
1647 | mlist = read_memory_unsigned_integer (class_str.methods + |
1648 | (4 * mlistnum), 4); | |
1649 | if (mlist == 0) | |
1650 | break; | |
b81654f1 | 1651 | |
d2e6263c | 1652 | nmethods = read_objc_methlist_nmethods (mlist); |
b81654f1 | 1653 | |
d2e6263c MS |
1654 | for (i = 0; i < nmethods; i++) |
1655 | { | |
1656 | struct objc_method meth_str; | |
1657 | read_objc_methlist_method (mlist, i, &meth_str); | |
b81654f1 MS |
1658 | |
1659 | #if 0 | |
d2e6263c MS |
1660 | fprintf (stderr, |
1661 | "checking method 0x%lx against selector 0x%lx\n", | |
1662 | meth_str.name, sel); | |
b81654f1 MS |
1663 | #endif |
1664 | ||
d2e6263c | 1665 | if (meth_str.name == sel) |
1abf022c AF |
1666 | /* FIXME: hppa arch was doing a pointer dereference |
1667 | here. There needs to be a better way to do that. */ | |
1668 | return meth_str.imp; | |
d2e6263c MS |
1669 | } |
1670 | mlistnum++; | |
b81654f1 | 1671 | } |
d2e6263c | 1672 | subclass = class_str.super_class; |
b81654f1 | 1673 | } |
b81654f1 MS |
1674 | |
1675 | return 0; | |
1676 | } | |
1677 | ||
b9362cc7 | 1678 | static CORE_ADDR |
b81654f1 MS |
1679 | find_implementation (CORE_ADDR object, CORE_ADDR sel) |
1680 | { | |
1681 | struct objc_object ostr; | |
1682 | ||
d2e6263c MS |
1683 | if (object == 0) |
1684 | return 0; | |
b81654f1 | 1685 | read_objc_object (object, &ostr); |
d2e6263c MS |
1686 | if (ostr.isa == 0) |
1687 | return 0; | |
b81654f1 MS |
1688 | |
1689 | return find_implementation_from_class (ostr.isa, sel); | |
1690 | } | |
1691 | ||
1692 | static int | |
1693 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1694 | { | |
5ed92fa8 UW |
1695 | struct frame_info *frame = get_current_frame (); |
1696 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1697 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1698 | ||
b81654f1 MS |
1699 | CORE_ADDR object; |
1700 | CORE_ADDR sel; | |
1701 | CORE_ADDR res; | |
1702 | ||
5ed92fa8 UW |
1703 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1704 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 MS |
1705 | |
1706 | res = find_implementation (object, sel); | |
d2e6263c MS |
1707 | if (new_pc != 0) |
1708 | *new_pc = res; | |
1709 | if (res == 0) | |
1710 | return 1; | |
b81654f1 MS |
1711 | return 0; |
1712 | } | |
1713 | ||
1714 | static int | |
1715 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1716 | { | |
5ed92fa8 UW |
1717 | struct frame_info *frame = get_current_frame (); |
1718 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1719 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1720 | ||
b81654f1 MS |
1721 | CORE_ADDR object; |
1722 | CORE_ADDR sel; | |
1723 | CORE_ADDR res; | |
1724 | ||
5ed92fa8 UW |
1725 | object = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1726 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 MS |
1727 | |
1728 | res = find_implementation (object, sel); | |
d2e6263c MS |
1729 | if (new_pc != 0) |
1730 | *new_pc = res; | |
1731 | if (res == 0) | |
1732 | return 1; | |
b81654f1 MS |
1733 | return 0; |
1734 | } | |
1735 | ||
1736 | static int | |
1737 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1738 | { | |
5ed92fa8 UW |
1739 | struct frame_info *frame = get_current_frame (); |
1740 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1741 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1742 | ||
b81654f1 MS |
1743 | struct objc_super sstr; |
1744 | ||
1745 | CORE_ADDR super; | |
1746 | CORE_ADDR sel; | |
1747 | CORE_ADDR res; | |
1748 | ||
5ed92fa8 UW |
1749 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 0, ptr_type); |
1750 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); | |
b81654f1 MS |
1751 | |
1752 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1753 | if (sstr.class == 0) |
1754 | return 0; | |
b81654f1 MS |
1755 | |
1756 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1757 | if (new_pc != 0) |
1758 | *new_pc = res; | |
1759 | if (res == 0) | |
1760 | return 1; | |
b81654f1 MS |
1761 | return 0; |
1762 | } | |
1763 | ||
1764 | static int | |
1765 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1766 | { | |
5ed92fa8 UW |
1767 | struct frame_info *frame = get_current_frame (); |
1768 | struct gdbarch *gdbarch = get_frame_arch (frame); | |
1769 | struct type *ptr_type = builtin_type (gdbarch)->builtin_func_ptr; | |
1770 | ||
b81654f1 MS |
1771 | struct objc_super sstr; |
1772 | ||
1773 | CORE_ADDR super; | |
1774 | CORE_ADDR sel; | |
1775 | CORE_ADDR res; | |
1776 | ||
5ed92fa8 UW |
1777 | super = gdbarch_fetch_pointer_argument (gdbarch, frame, 1, ptr_type); |
1778 | sel = gdbarch_fetch_pointer_argument (gdbarch, frame, 2, ptr_type); | |
b81654f1 MS |
1779 | |
1780 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1781 | if (sstr.class == 0) |
1782 | return 0; | |
b81654f1 MS |
1783 | |
1784 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1785 | if (new_pc != 0) |
1786 | *new_pc = res; | |
1787 | if (res == 0) | |
1788 | return 1; | |
b81654f1 MS |
1789 | return 0; |
1790 | } |