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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 | |
176620f1 | 88 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0, |
d2e6263c | 89 | (struct symtab **) NULL); |
b81654f1 MS |
90 | |
91 | if (sym == NULL) | |
92 | { | |
93 | if (noerr) | |
94 | return 0; | |
95 | else | |
8a3fe4f8 | 96 | error (_("No struct type named %s."), name); |
b81654f1 MS |
97 | } |
98 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) | |
99 | { | |
100 | if (noerr) | |
101 | return 0; | |
102 | else | |
8a3fe4f8 | 103 | error (_("This context has class, union or enum %s, not a struct."), |
d2e6263c | 104 | name); |
b81654f1 MS |
105 | } |
106 | return sym; | |
107 | } | |
108 | ||
109 | CORE_ADDR | |
110 | lookup_objc_class (char *classname) | |
111 | { | |
112 | struct value * function, *classval; | |
113 | ||
114 | if (! target_has_execution) | |
115 | { | |
d2e6263c | 116 | /* Can't call into inferior to lookup class. */ |
b81654f1 MS |
117 | return 0; |
118 | } | |
119 | ||
120 | if (lookup_minimal_symbol("objc_lookUpClass", 0, 0)) | |
121 | function = find_function_in_inferior("objc_lookUpClass"); | |
122 | else if (lookup_minimal_symbol ("objc_lookup_class", 0, 0)) | |
123 | function = find_function_in_inferior("objc_lookup_class"); | |
124 | else | |
125 | { | |
e2e0b3e5 | 126 | complaint (&symfile_complaints, _("no way to lookup Objective-C classes")); |
b81654f1 MS |
127 | return 0; |
128 | } | |
129 | ||
130 | classval = value_string (classname, strlen (classname) + 1); | |
131 | classval = value_coerce_array (classval); | |
132 | return (CORE_ADDR) value_as_long (call_function_by_hand (function, | |
133 | 1, &classval)); | |
134 | } | |
135 | ||
c253954e | 136 | CORE_ADDR |
b81654f1 MS |
137 | lookup_child_selector (char *selname) |
138 | { | |
139 | struct value * function, *selstring; | |
140 | ||
141 | if (! target_has_execution) | |
142 | { | |
d2e6263c | 143 | /* Can't call into inferior to lookup selector. */ |
b81654f1 MS |
144 | return 0; |
145 | } | |
146 | ||
147 | if (lookup_minimal_symbol("sel_getUid", 0, 0)) | |
148 | function = find_function_in_inferior("sel_getUid"); | |
149 | else if (lookup_minimal_symbol ("sel_get_any_uid", 0, 0)) | |
150 | function = find_function_in_inferior("sel_get_any_uid"); | |
151 | else | |
152 | { | |
e2e0b3e5 | 153 | complaint (&symfile_complaints, _("no way to lookup Objective-C selectors")); |
b81654f1 MS |
154 | return 0; |
155 | } | |
156 | ||
d2e6263c MS |
157 | selstring = value_coerce_array (value_string (selname, |
158 | strlen (selname) + 1)); | |
b81654f1 MS |
159 | return value_as_long (call_function_by_hand (function, 1, &selstring)); |
160 | } | |
161 | ||
162 | struct value * | |
163 | value_nsstring (char *ptr, int len) | |
164 | { | |
165 | struct value *stringValue[3]; | |
166 | struct value *function, *nsstringValue; | |
167 | struct symbol *sym; | |
168 | struct type *type; | |
169 | ||
170 | if (!target_has_execution) | |
d2e6263c | 171 | return 0; /* Can't call into inferior to create NSString. */ |
b81654f1 | 172 | |
5e488a7b AC |
173 | sym = lookup_struct_typedef("NSString", 0, 1); |
174 | if (sym == NULL) | |
175 | sym = lookup_struct_typedef("NXString", 0, 1); | |
176 | if (sym == NULL) | |
b81654f1 MS |
177 | type = lookup_pointer_type(builtin_type_void); |
178 | else | |
179 | type = lookup_pointer_type(SYMBOL_TYPE (sym)); | |
180 | ||
181 | stringValue[2] = value_string(ptr, len); | |
182 | stringValue[2] = value_coerce_array(stringValue[2]); | |
d2e6263c | 183 | /* _NSNewStringFromCString replaces "istr" after Lantern2A. */ |
b81654f1 MS |
184 | if (lookup_minimal_symbol("_NSNewStringFromCString", 0, 0)) |
185 | { | |
186 | function = find_function_in_inferior("_NSNewStringFromCString"); | |
187 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
188 | } | |
189 | else if (lookup_minimal_symbol("istr", 0, 0)) | |
190 | { | |
191 | function = find_function_in_inferior("istr"); | |
192 | nsstringValue = call_function_by_hand(function, 1, &stringValue[2]); | |
193 | } | |
194 | else if (lookup_minimal_symbol("+[NSString stringWithCString:]", 0, 0)) | |
195 | { | |
196 | function = find_function_in_inferior("+[NSString stringWithCString:]"); | |
197 | stringValue[0] = value_from_longest | |
198 | (builtin_type_long, lookup_objc_class ("NSString")); | |
199 | stringValue[1] = value_from_longest | |
200 | (builtin_type_long, lookup_child_selector ("stringWithCString:")); | |
201 | nsstringValue = call_function_by_hand(function, 3, &stringValue[0]); | |
202 | } | |
203 | else | |
8a3fe4f8 | 204 | error (_("NSString: internal error -- no way to create new NSString")); |
b81654f1 | 205 | |
04624583 | 206 | deprecated_set_value_type (nsstringValue, type); |
b81654f1 MS |
207 | return nsstringValue; |
208 | } | |
209 | ||
d2e6263c | 210 | /* Objective-C name demangling. */ |
b81654f1 MS |
211 | |
212 | char * | |
9a3d7dfd | 213 | objc_demangle (const char *mangled, int options) |
b81654f1 MS |
214 | { |
215 | char *demangled, *cp; | |
216 | ||
217 | if (mangled[0] == '_' && | |
218 | (mangled[1] == 'i' || mangled[1] == 'c') && | |
219 | mangled[2] == '_') | |
220 | { | |
221 | cp = demangled = xmalloc(strlen(mangled) + 2); | |
222 | ||
223 | if (mangled[1] == 'i') | |
224 | *cp++ = '-'; /* for instance method */ | |
225 | else | |
226 | *cp++ = '+'; /* for class method */ | |
227 | ||
228 | *cp++ = '['; /* opening left brace */ | |
229 | strcpy(cp, mangled+3); /* tack on the rest of the mangled name */ | |
230 | ||
231 | while (*cp && *cp == '_') | |
232 | cp++; /* skip any initial underbars in class name */ | |
233 | ||
7248f48e AF |
234 | cp = strchr(cp, '_'); |
235 | if (!cp) /* find first non-initial underbar */ | |
b81654f1 | 236 | { |
7248f48e | 237 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
238 | return NULL; |
239 | } | |
240 | if (cp[1] == '_') { /* easy case: no category name */ | |
241 | *cp++ = ' '; /* replace two '_' with one ' ' */ | |
242 | strcpy(cp, mangled + (cp - demangled) + 2); | |
243 | } | |
244 | else { | |
245 | *cp++ = '('; /* less easy case: category name */ | |
7248f48e AF |
246 | cp = strchr(cp, '_'); |
247 | if (!cp) | |
b81654f1 | 248 | { |
7248f48e | 249 | xfree(demangled); /* not mangled name */ |
b81654f1 MS |
250 | return NULL; |
251 | } | |
252 | *cp++ = ')'; | |
d2e6263c | 253 | *cp++ = ' '; /* overwriting 1st char of method name... */ |
b81654f1 MS |
254 | strcpy(cp, mangled + (cp - demangled)); /* get it back */ |
255 | } | |
256 | ||
257 | while (*cp && *cp == '_') | |
258 | cp++; /* skip any initial underbars in method name */ | |
259 | ||
260 | for (; *cp; cp++) | |
261 | if (*cp == '_') | |
262 | *cp = ':'; /* replace remaining '_' with ':' */ | |
263 | ||
264 | *cp++ = ']'; /* closing right brace */ | |
265 | *cp++ = 0; /* string terminator */ | |
266 | return demangled; | |
267 | } | |
268 | else | |
d2e6263c | 269 | return NULL; /* Not an objc mangled name. */ |
b81654f1 MS |
270 | } |
271 | ||
d2e6263c MS |
272 | /* Print the character C on STREAM as part of the contents of a |
273 | literal string whose delimiter is QUOTER. Note that that format | |
274 | for printing characters and strings is language specific. */ | |
b81654f1 MS |
275 | |
276 | static void | |
f86f5ca3 | 277 | objc_emit_char (int c, struct ui_file *stream, int quoter) |
b81654f1 MS |
278 | { |
279 | ||
d2e6263c | 280 | c &= 0xFF; /* Avoid sign bit follies. */ |
b81654f1 MS |
281 | |
282 | if (PRINT_LITERAL_FORM (c)) | |
283 | { | |
284 | if (c == '\\' || c == quoter) | |
285 | { | |
286 | fputs_filtered ("\\", stream); | |
287 | } | |
288 | fprintf_filtered (stream, "%c", c); | |
289 | } | |
290 | else | |
291 | { | |
292 | switch (c) | |
293 | { | |
294 | case '\n': | |
295 | fputs_filtered ("\\n", stream); | |
296 | break; | |
297 | case '\b': | |
298 | fputs_filtered ("\\b", stream); | |
299 | break; | |
300 | case '\t': | |
301 | fputs_filtered ("\\t", stream); | |
302 | break; | |
303 | case '\f': | |
304 | fputs_filtered ("\\f", stream); | |
305 | break; | |
306 | case '\r': | |
307 | fputs_filtered ("\\r", stream); | |
308 | break; | |
309 | case '\033': | |
310 | fputs_filtered ("\\e", stream); | |
311 | break; | |
312 | case '\007': | |
313 | fputs_filtered ("\\a", stream); | |
314 | break; | |
315 | default: | |
316 | fprintf_filtered (stream, "\\%.3o", (unsigned int) c); | |
317 | break; | |
318 | } | |
319 | } | |
320 | } | |
321 | ||
322 | static void | |
323 | objc_printchar (int c, struct ui_file *stream) | |
324 | { | |
325 | fputs_filtered ("'", stream); | |
326 | objc_emit_char (c, stream, '\''); | |
327 | fputs_filtered ("'", stream); | |
328 | } | |
329 | ||
d2e6263c MS |
330 | /* Print the character string STRING, printing at most LENGTH |
331 | characters. Printing stops early if the number hits print_max; | |
332 | repeat counts are printed as appropriate. Print ellipses at the | |
333 | end if we had to stop before printing LENGTH characters, or if | |
334 | FORCE_ELLIPSES. */ | |
b81654f1 MS |
335 | |
336 | static void | |
fc1a4b47 | 337 | objc_printstr (struct ui_file *stream, const gdb_byte *string, |
36e53c63 | 338 | unsigned int length, int width, int force_ellipses) |
b81654f1 | 339 | { |
f86f5ca3 | 340 | unsigned int i; |
b81654f1 MS |
341 | unsigned int things_printed = 0; |
342 | int in_quotes = 0; | |
343 | int need_comma = 0; | |
b81654f1 MS |
344 | |
345 | /* If the string was not truncated due to `set print elements', and | |
d2e6263c MS |
346 | the last byte of it is a null, we don't print that, in |
347 | traditional C style. */ | |
b81654f1 MS |
348 | if ((!force_ellipses) && length > 0 && string[length-1] == '\0') |
349 | length--; | |
350 | ||
351 | if (length == 0) | |
352 | { | |
353 | fputs_filtered ("\"\"", stream); | |
354 | return; | |
355 | } | |
356 | ||
357 | for (i = 0; i < length && things_printed < print_max; ++i) | |
358 | { | |
d2e6263c MS |
359 | /* Position of the character we are examining to see whether it |
360 | is repeated. */ | |
b81654f1 MS |
361 | unsigned int rep1; |
362 | /* Number of repetitions we have detected so far. */ | |
363 | unsigned int reps; | |
364 | ||
365 | QUIT; | |
366 | ||
367 | if (need_comma) | |
368 | { | |
369 | fputs_filtered (", ", stream); | |
370 | need_comma = 0; | |
371 | } | |
372 | ||
373 | rep1 = i + 1; | |
374 | reps = 1; | |
375 | while (rep1 < length && string[rep1] == string[i]) | |
376 | { | |
377 | ++rep1; | |
378 | ++reps; | |
379 | } | |
380 | ||
381 | if (reps > repeat_count_threshold) | |
382 | { | |
383 | if (in_quotes) | |
384 | { | |
385 | if (inspect_it) | |
386 | fputs_filtered ("\\\", ", stream); | |
387 | else | |
388 | fputs_filtered ("\", ", stream); | |
389 | in_quotes = 0; | |
390 | } | |
391 | objc_printchar (string[i], stream); | |
392 | fprintf_filtered (stream, " <repeats %u times>", reps); | |
393 | i = rep1 - 1; | |
394 | things_printed += repeat_count_threshold; | |
395 | need_comma = 1; | |
396 | } | |
397 | else | |
398 | { | |
399 | if (!in_quotes) | |
400 | { | |
401 | if (inspect_it) | |
402 | fputs_filtered ("\\\"", stream); | |
403 | else | |
404 | fputs_filtered ("\"", stream); | |
405 | in_quotes = 1; | |
406 | } | |
407 | objc_emit_char (string[i], stream, '"'); | |
408 | ++things_printed; | |
409 | } | |
410 | } | |
411 | ||
412 | /* Terminate the quotes if necessary. */ | |
413 | if (in_quotes) | |
414 | { | |
415 | if (inspect_it) | |
416 | fputs_filtered ("\\\"", stream); | |
417 | else | |
418 | fputs_filtered ("\"", stream); | |
419 | } | |
420 | ||
421 | if (force_ellipses || i < length) | |
422 | fputs_filtered ("...", stream); | |
423 | } | |
424 | ||
f636b87d AF |
425 | /* Determine if we are currently in the Objective-C dispatch function. |
426 | If so, get the address of the method function that the dispatcher | |
427 | would call and use that as the function to step into instead. Also | |
428 | skip over the trampoline for the function (if any). This is better | |
429 | for the user since they are only interested in stepping into the | |
430 | method function anyway. */ | |
431 | static CORE_ADDR | |
52f729a7 | 432 | objc_skip_trampoline (struct frame_info *frame, CORE_ADDR stop_pc) |
f636b87d AF |
433 | { |
434 | CORE_ADDR real_stop_pc; | |
435 | CORE_ADDR method_stop_pc; | |
436 | ||
52f729a7 UW |
437 | real_stop_pc = gdbarch_skip_trampoline_code |
438 | (current_gdbarch, frame, stop_pc); | |
f636b87d AF |
439 | |
440 | if (real_stop_pc != 0) | |
441 | find_objc_msgcall (real_stop_pc, &method_stop_pc); | |
442 | else | |
443 | find_objc_msgcall (stop_pc, &method_stop_pc); | |
444 | ||
445 | if (method_stop_pc) | |
446 | { | |
e76f05fa | 447 | real_stop_pc = gdbarch_skip_trampoline_code |
52f729a7 | 448 | (current_gdbarch, frame, method_stop_pc); |
f636b87d AF |
449 | if (real_stop_pc == 0) |
450 | real_stop_pc = method_stop_pc; | |
451 | } | |
452 | ||
453 | return real_stop_pc; | |
454 | } | |
455 | ||
b81654f1 MS |
456 | |
457 | /* Table mapping opcodes into strings for printing operators | |
458 | and precedences of the operators. */ | |
459 | ||
460 | static const struct op_print objc_op_print_tab[] = | |
461 | { | |
462 | {",", BINOP_COMMA, PREC_COMMA, 0}, | |
463 | {"=", BINOP_ASSIGN, PREC_ASSIGN, 1}, | |
464 | {"||", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0}, | |
465 | {"&&", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0}, | |
466 | {"|", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0}, | |
467 | {"^", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0}, | |
468 | {"&", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0}, | |
469 | {"==", BINOP_EQUAL, PREC_EQUAL, 0}, | |
470 | {"!=", BINOP_NOTEQUAL, PREC_EQUAL, 0}, | |
471 | {"<=", BINOP_LEQ, PREC_ORDER, 0}, | |
472 | {">=", BINOP_GEQ, PREC_ORDER, 0}, | |
473 | {">", BINOP_GTR, PREC_ORDER, 0}, | |
474 | {"<", BINOP_LESS, PREC_ORDER, 0}, | |
475 | {">>", BINOP_RSH, PREC_SHIFT, 0}, | |
476 | {"<<", BINOP_LSH, PREC_SHIFT, 0}, | |
477 | {"+", BINOP_ADD, PREC_ADD, 0}, | |
478 | {"-", BINOP_SUB, PREC_ADD, 0}, | |
479 | {"*", BINOP_MUL, PREC_MUL, 0}, | |
480 | {"/", BINOP_DIV, PREC_MUL, 0}, | |
481 | {"%", BINOP_REM, PREC_MUL, 0}, | |
482 | {"@", BINOP_REPEAT, PREC_REPEAT, 0}, | |
483 | {"-", UNOP_NEG, PREC_PREFIX, 0}, | |
484 | {"!", UNOP_LOGICAL_NOT, PREC_PREFIX, 0}, | |
485 | {"~", UNOP_COMPLEMENT, PREC_PREFIX, 0}, | |
486 | {"*", UNOP_IND, PREC_PREFIX, 0}, | |
487 | {"&", UNOP_ADDR, PREC_PREFIX, 0}, | |
488 | {"sizeof ", UNOP_SIZEOF, PREC_PREFIX, 0}, | |
489 | {"++", UNOP_PREINCREMENT, PREC_PREFIX, 0}, | |
490 | {"--", UNOP_PREDECREMENT, PREC_PREFIX, 0}, | |
e8f3fcdd | 491 | {NULL, OP_NULL, PREC_NULL, 0} |
b81654f1 MS |
492 | }; |
493 | ||
b81654f1 | 494 | const struct language_defn objc_language_defn = { |
d2e6263c | 495 | "objective-c", /* Language name */ |
b81654f1 | 496 | language_objc, |
b81654f1 MS |
497 | range_check_off, |
498 | type_check_off, | |
499 | case_sensitive_on, | |
7ca2d3a3 | 500 | array_row_major, |
5f9769d1 | 501 | &exp_descriptor_standard, |
b81654f1 MS |
502 | objc_parse, |
503 | objc_error, | |
e85c3284 | 504 | null_post_parser, |
b81654f1 MS |
505 | objc_printchar, /* Print a character constant */ |
506 | objc_printstr, /* Function to print string constant */ | |
507 | objc_emit_char, | |
b81654f1 MS |
508 | c_print_type, /* Print a type using appropriate syntax */ |
509 | c_val_print, /* Print a value using appropriate syntax */ | |
510 | c_value_print, /* Print a top-level value */ | |
f636b87d | 511 | objc_skip_trampoline, /* Language specific skip_trampoline */ |
5f9a71c3 DC |
512 | value_of_this, /* value_of_this */ |
513 | basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */ | |
b368761e | 514 | basic_lookup_transparent_type,/* lookup_transparent_type */ |
9a3d7dfd | 515 | objc_demangle, /* Language specific symbol demangler */ |
31c27f77 | 516 | NULL, /* Language specific class_name_from_physname */ |
d2e6263c MS |
517 | objc_op_print_tab, /* Expression operators for printing */ |
518 | 1, /* C-style arrays */ | |
b81654f1 | 519 | 0, /* String lower bound */ |
6084f43a | 520 | default_word_break_characters, |
41d27058 | 521 | default_make_symbol_completion_list, |
cad351d1 | 522 | c_language_arch_info, |
e79af960 | 523 | default_print_array_index, |
41f1b697 | 524 | default_pass_by_reference, |
b81654f1 MS |
525 | LANG_MAGIC |
526 | }; | |
527 | ||
528 | /* | |
529 | * ObjC: | |
d2e6263c | 530 | * Following functions help construct Objective-C message calls |
b81654f1 MS |
531 | */ |
532 | ||
d2e6263c | 533 | struct selname /* For parsing Objective-C. */ |
b81654f1 MS |
534 | { |
535 | struct selname *next; | |
536 | char *msglist_sel; | |
537 | int msglist_len; | |
538 | }; | |
539 | ||
540 | static int msglist_len; | |
541 | static struct selname *selname_chain; | |
542 | static char *msglist_sel; | |
543 | ||
544 | void | |
545 | start_msglist(void) | |
546 | { | |
f86f5ca3 | 547 | struct selname *new = |
b81654f1 MS |
548 | (struct selname *) xmalloc (sizeof (struct selname)); |
549 | ||
550 | new->next = selname_chain; | |
551 | new->msglist_len = msglist_len; | |
552 | new->msglist_sel = msglist_sel; | |
553 | msglist_len = 0; | |
554 | msglist_sel = (char *)xmalloc(1); | |
555 | *msglist_sel = 0; | |
556 | selname_chain = new; | |
557 | } | |
558 | ||
559 | void | |
560 | add_msglist(struct stoken *str, int addcolon) | |
561 | { | |
562 | char *s, *p; | |
563 | int len, plen; | |
564 | ||
d2e6263c MS |
565 | if (str == 0) { /* Unnamed arg, or... */ |
566 | if (addcolon == 0) { /* variable number of args. */ | |
b81654f1 MS |
567 | msglist_len++; |
568 | return; | |
569 | } | |
570 | p = ""; | |
571 | plen = 0; | |
572 | } else { | |
573 | p = str->ptr; | |
574 | plen = str->length; | |
575 | } | |
576 | len = plen + strlen(msglist_sel) + 2; | |
577 | s = (char *)xmalloc(len); | |
578 | strcpy(s, msglist_sel); | |
579 | strncat(s, p, plen); | |
7248f48e | 580 | xfree(msglist_sel); |
b81654f1 MS |
581 | msglist_sel = s; |
582 | if (addcolon) { | |
583 | s[len-2] = ':'; | |
584 | s[len-1] = 0; | |
585 | msglist_len++; | |
586 | } else | |
587 | s[len-2] = '\0'; | |
588 | } | |
589 | ||
590 | int | |
591 | end_msglist(void) | |
592 | { | |
f86f5ca3 PH |
593 | int val = msglist_len; |
594 | struct selname *sel = selname_chain; | |
595 | char *p = msglist_sel; | |
c253954e | 596 | CORE_ADDR selid; |
b81654f1 MS |
597 | |
598 | selname_chain = sel->next; | |
599 | msglist_len = sel->msglist_len; | |
600 | msglist_sel = sel->msglist_sel; | |
601 | selid = lookup_child_selector(p); | |
602 | if (!selid) | |
8a3fe4f8 | 603 | error (_("Can't find selector \"%s\""), p); |
b81654f1 | 604 | write_exp_elt_longcst (selid); |
7248f48e | 605 | xfree(p); |
d2e6263c | 606 | write_exp_elt_longcst (val); /* Number of args */ |
7248f48e | 607 | xfree(sel); |
b81654f1 MS |
608 | |
609 | return val; | |
610 | } | |
611 | ||
612 | /* | |
613 | * Function: specialcmp (char *a, char *b) | |
614 | * | |
615 | * Special strcmp: treats ']' and ' ' as end-of-string. | |
d2e6263c | 616 | * Used for qsorting lists of objc methods (either by class or selector). |
b81654f1 MS |
617 | */ |
618 | ||
b9362cc7 AC |
619 | static int |
620 | specialcmp (char *a, char *b) | |
b81654f1 MS |
621 | { |
622 | while (*a && *a != ' ' && *a != ']' && *b && *b != ' ' && *b != ']') | |
623 | { | |
624 | if (*a != *b) | |
625 | return *a - *b; | |
626 | a++, b++; | |
627 | } | |
628 | if (*a && *a != ' ' && *a != ']') | |
629 | return 1; /* a is longer therefore greater */ | |
630 | if (*b && *b != ' ' && *b != ']') | |
631 | return -1; /* a is shorter therefore lesser */ | |
632 | return 0; /* a and b are identical */ | |
633 | } | |
634 | ||
635 | /* | |
36e53c63 | 636 | * Function: compare_selectors (const void *, const void *) |
b81654f1 | 637 | * |
d2e6263c MS |
638 | * Comparison function for use with qsort. Arguments are symbols or |
639 | * msymbols Compares selector part of objc method name alphabetically. | |
b81654f1 MS |
640 | */ |
641 | ||
642 | static int | |
36e53c63 | 643 | compare_selectors (const void *a, const void *b) |
b81654f1 MS |
644 | { |
645 | char *aname, *bname; | |
646 | ||
de5ad195 DC |
647 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
648 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 649 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 650 | error (_("internal: compare_selectors(1)")); |
b81654f1 | 651 | |
7248f48e AF |
652 | aname = strchr(aname, ' '); |
653 | bname = strchr(bname, ' '); | |
654 | if (aname == NULL || bname == NULL) | |
8a3fe4f8 | 655 | error (_("internal: compare_selectors(2)")); |
b81654f1 MS |
656 | |
657 | return specialcmp (aname+1, bname+1); | |
658 | } | |
659 | ||
660 | /* | |
661 | * Function: selectors_info (regexp, from_tty) | |
662 | * | |
d2e6263c MS |
663 | * Implements the "Info selectors" command. Takes an optional regexp |
664 | * arg. Lists all objective c selectors that match the regexp. Works | |
665 | * by grepping thru all symbols for objective c methods. Output list | |
666 | * is sorted and uniqued. | |
b81654f1 MS |
667 | */ |
668 | ||
669 | static void | |
670 | selectors_info (char *regexp, int from_tty) | |
671 | { | |
672 | struct objfile *objfile; | |
673 | struct minimal_symbol *msymbol; | |
674 | char *name; | |
675 | char *val; | |
676 | int matches = 0; | |
677 | int maxlen = 0; | |
678 | int ix; | |
679 | char myregexp[2048]; | |
680 | char asel[256]; | |
681 | struct symbol **sym_arr; | |
682 | int plusminus = 0; | |
683 | ||
684 | if (regexp == NULL) | |
d2e6263c | 685 | strcpy(myregexp, ".*]"); /* Null input, match all objc methods. */ |
b81654f1 MS |
686 | else |
687 | { | |
d2e6263c MS |
688 | if (*regexp == '+' || *regexp == '-') |
689 | { /* User wants only class methods or only instance methods. */ | |
b81654f1 MS |
690 | plusminus = *regexp++; |
691 | while (*regexp == ' ' || *regexp == '\t') | |
692 | regexp++; | |
693 | } | |
694 | if (*regexp == '\0') | |
695 | strcpy(myregexp, ".*]"); | |
696 | else | |
697 | { | |
698 | strcpy(myregexp, regexp); | |
699 | if (myregexp[strlen(myregexp) - 1] == '$') /* end of selector */ | |
700 | myregexp[strlen(myregexp) - 1] = ']'; /* end of method name */ | |
701 | else | |
702 | strcat(myregexp, ".*]"); | |
703 | } | |
704 | } | |
705 | ||
706 | if (regexp != NULL) | |
5e488a7b AC |
707 | { |
708 | val = re_comp (myregexp); | |
709 | if (val != 0) | |
8a3fe4f8 | 710 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 711 | } |
b81654f1 | 712 | |
d2e6263c | 713 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
714 | ALL_MSYMBOLS (objfile, msymbol) |
715 | { | |
716 | QUIT; | |
36018d2e | 717 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
718 | if (name && |
719 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 720 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 721 | { |
d2e6263c | 722 | /* Filter for class/instance methods. */ |
b81654f1 | 723 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
724 | continue; |
725 | /* Find selector part. */ | |
726 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
727 | if (regexp == NULL || re_exec(++name) != 0) |
728 | { | |
729 | char *mystart = name; | |
730 | char *myend = (char *) strchr(mystart, ']'); | |
731 | ||
732 | if (myend && (myend - mystart > maxlen)) | |
d2e6263c | 733 | maxlen = myend - mystart; /* Get longest selector. */ |
b81654f1 MS |
734 | matches++; |
735 | } | |
736 | } | |
737 | } | |
738 | if (matches) | |
739 | { | |
a3f17187 | 740 | printf_filtered (_("Selectors matching \"%s\":\n\n"), |
b81654f1 MS |
741 | regexp ? regexp : "*"); |
742 | ||
743 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
744 | matches = 0; | |
745 | ALL_MSYMBOLS (objfile, msymbol) | |
746 | { | |
747 | QUIT; | |
36018d2e | 748 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
749 | if (name && |
750 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 751 | name[1] == '[') /* Got a method name. */ |
b81654f1 | 752 | { |
d2e6263c | 753 | /* Filter for class/instance methods. */ |
b81654f1 | 754 | if (plusminus && name[0] != plusminus) |
d2e6263c MS |
755 | continue; |
756 | /* Find selector part. */ | |
757 | name = (char *) strchr(name+2, ' '); | |
b81654f1 MS |
758 | if (regexp == NULL || re_exec(++name) != 0) |
759 | sym_arr[matches++] = (struct symbol *) msymbol; | |
760 | } | |
761 | } | |
762 | ||
763 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
764 | compare_selectors); | |
d2e6263c MS |
765 | /* Prevent compare on first iteration. */ |
766 | asel[0] = 0; | |
767 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
768 | { |
769 | char *p = asel; | |
770 | ||
771 | QUIT; | |
36018d2e | 772 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
773 | name = strchr (name, ' ') + 1; |
774 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 775 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 776 | |
d2e6263c MS |
777 | /* Copy selector part. */ |
778 | while (*name && *name != ']') | |
b81654f1 MS |
779 | *p++ = *name++; |
780 | *p++ = '\0'; | |
d2e6263c MS |
781 | /* Print in columns. */ |
782 | puts_filtered_tabular(asel, maxlen + 1, 0); | |
b81654f1 MS |
783 | } |
784 | begin_line(); | |
785 | } | |
786 | else | |
a3f17187 | 787 | printf_filtered (_("No selectors matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
788 | } |
789 | ||
790 | /* | |
36e53c63 | 791 | * Function: compare_classes (const void *, const void *) |
b81654f1 | 792 | * |
d2e6263c MS |
793 | * Comparison function for use with qsort. Arguments are symbols or |
794 | * msymbols Compares class part of objc method name alphabetically. | |
b81654f1 MS |
795 | */ |
796 | ||
797 | static int | |
36e53c63 | 798 | compare_classes (const void *a, const void *b) |
b81654f1 MS |
799 | { |
800 | char *aname, *bname; | |
801 | ||
de5ad195 DC |
802 | aname = SYMBOL_PRINT_NAME (*(struct symbol **) a); |
803 | bname = SYMBOL_PRINT_NAME (*(struct symbol **) b); | |
7248f48e | 804 | if (aname == NULL || bname == NULL) |
8a3fe4f8 | 805 | error (_("internal: compare_classes(1)")); |
b81654f1 MS |
806 | |
807 | return specialcmp (aname+1, bname+1); | |
808 | } | |
809 | ||
810 | /* | |
811 | * Function: classes_info(regexp, from_tty) | |
812 | * | |
813 | * Implements the "info classes" command for objective c classes. | |
814 | * Lists all objective c classes that match the optional regexp. | |
d2e6263c MS |
815 | * Works by grepping thru the list of objective c methods. List will |
816 | * be sorted and uniqued (since one class may have many methods). | |
817 | * BUGS: will not list a class that has no methods. | |
b81654f1 MS |
818 | */ |
819 | ||
820 | static void | |
821 | classes_info (char *regexp, int from_tty) | |
822 | { | |
823 | struct objfile *objfile; | |
824 | struct minimal_symbol *msymbol; | |
825 | char *name; | |
826 | char *val; | |
827 | int matches = 0; | |
828 | int maxlen = 0; | |
829 | int ix; | |
830 | char myregexp[2048]; | |
831 | char aclass[256]; | |
832 | struct symbol **sym_arr; | |
833 | ||
834 | if (regexp == NULL) | |
d2e6263c | 835 | strcpy(myregexp, ".* "); /* Null input: match all objc classes. */ |
b81654f1 MS |
836 | else |
837 | { | |
838 | strcpy(myregexp, regexp); | |
839 | if (myregexp[strlen(myregexp) - 1] == '$') | |
d2e6263c | 840 | /* In the method name, the end of the class name is marked by ' '. */ |
b81654f1 MS |
841 | myregexp[strlen(myregexp) - 1] = ' '; |
842 | else | |
843 | strcat(myregexp, ".* "); | |
844 | } | |
845 | ||
846 | if (regexp != NULL) | |
5e488a7b AC |
847 | { |
848 | val = re_comp (myregexp); | |
849 | if (val != 0) | |
8a3fe4f8 | 850 | error (_("Invalid regexp (%s): %s"), val, regexp); |
5e488a7b | 851 | } |
b81654f1 | 852 | |
d2e6263c | 853 | /* First time thru is JUST to get max length and count. */ |
b81654f1 MS |
854 | ALL_MSYMBOLS (objfile, msymbol) |
855 | { | |
856 | QUIT; | |
36018d2e | 857 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
858 | if (name && |
859 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 860 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
861 | if (regexp == NULL || re_exec(name+2) != 0) |
862 | { | |
d2e6263c MS |
863 | /* Compute length of classname part. */ |
864 | char *mystart = name + 2; | |
b81654f1 MS |
865 | char *myend = (char *) strchr(mystart, ' '); |
866 | ||
867 | if (myend && (myend - mystart > maxlen)) | |
868 | maxlen = myend - mystart; | |
869 | matches++; | |
870 | } | |
871 | } | |
872 | if (matches) | |
873 | { | |
a3f17187 | 874 | printf_filtered (_("Classes matching \"%s\":\n\n"), |
b81654f1 MS |
875 | regexp ? regexp : "*"); |
876 | sym_arr = alloca (matches * sizeof (struct symbol *)); | |
877 | matches = 0; | |
878 | ALL_MSYMBOLS (objfile, msymbol) | |
879 | { | |
880 | QUIT; | |
36018d2e | 881 | name = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
882 | if (name && |
883 | (name[0] == '-' || name[0] == '+') && | |
d2e6263c | 884 | name[1] == '[') /* Got a method name. */ |
b81654f1 MS |
885 | if (regexp == NULL || re_exec(name+2) != 0) |
886 | sym_arr[matches++] = (struct symbol *) msymbol; | |
887 | } | |
888 | ||
889 | qsort (sym_arr, matches, sizeof (struct minimal_symbol *), | |
890 | compare_classes); | |
d2e6263c MS |
891 | /* Prevent compare on first iteration. */ |
892 | aclass[0] = 0; | |
893 | for (ix = 0; ix < matches; ix++) /* Now do the output. */ | |
b81654f1 MS |
894 | { |
895 | char *p = aclass; | |
896 | ||
897 | QUIT; | |
36018d2e | 898 | name = SYMBOL_NATURAL_NAME (sym_arr[ix]); |
b81654f1 MS |
899 | name += 2; |
900 | if (p[0] && specialcmp(name, p) == 0) | |
d2e6263c | 901 | continue; /* Seen this one already (not unique). */ |
b81654f1 | 902 | |
d2e6263c MS |
903 | /* Copy class part of method name. */ |
904 | while (*name && *name != ' ') | |
b81654f1 MS |
905 | *p++ = *name++; |
906 | *p++ = '\0'; | |
d2e6263c MS |
907 | /* Print in columns. */ |
908 | puts_filtered_tabular(aclass, maxlen + 1, 0); | |
b81654f1 MS |
909 | } |
910 | begin_line(); | |
911 | } | |
912 | else | |
a3f17187 | 913 | printf_filtered (_("No classes matching \"%s\"\n"), regexp ? regexp : "*"); |
b81654f1 MS |
914 | } |
915 | ||
916 | /* | |
917 | * Function: find_imps (char *selector, struct symbol **sym_arr) | |
918 | * | |
919 | * Input: a string representing a selector | |
920 | * a pointer to an array of symbol pointers | |
921 | * possibly a pointer to a symbol found by the caller. | |
922 | * | |
d2e6263c MS |
923 | * Output: number of methods that implement that selector. Side |
924 | * effects: The array of symbol pointers is filled with matching syms. | |
b81654f1 | 925 | * |
d2e6263c MS |
926 | * By analogy with function "find_methods" (symtab.c), builds a list |
927 | * of symbols matching the ambiguous input, so that "decode_line_2" | |
928 | * (symtab.c) can list them and ask the user to choose one or more. | |
929 | * In this case the matches are objective c methods | |
930 | * ("implementations") matching an objective c selector. | |
b81654f1 | 931 | * |
d2e6263c MS |
932 | * Note that it is possible for a normal (c-style) function to have |
933 | * the same name as an objective c selector. To prevent the selector | |
934 | * from eclipsing the function, we allow the caller (decode_line_1) to | |
935 | * search for such a function first, and if it finds one, pass it in | |
936 | * to us. We will then integrate it into the list. We also search | |
937 | * for one here, among the minsyms. | |
b81654f1 | 938 | * |
d2e6263c MS |
939 | * NOTE: if NUM_DEBUGGABLE is non-zero, the sym_arr will be divided |
940 | * into two parts: debuggable (struct symbol) syms, and | |
941 | * non_debuggable (struct minimal_symbol) syms. The debuggable | |
942 | * ones will come first, before NUM_DEBUGGABLE (which will thus | |
943 | * be the index of the first non-debuggable one). | |
b81654f1 MS |
944 | */ |
945 | ||
946 | /* | |
947 | * Function: total_number_of_imps (char *selector); | |
948 | * | |
949 | * Input: a string representing a selector | |
950 | * Output: number of methods that implement that selector. | |
951 | * | |
d2e6263c | 952 | * By analogy with function "total_number_of_methods", this allows |
b81654f1 | 953 | * decode_line_1 (symtab.c) to detect if there are objective c methods |
d2e6263c MS |
954 | * matching the input, and to allocate an array of pointers to them |
955 | * which can be manipulated by "decode_line_2" (also in symtab.c). | |
b81654f1 MS |
956 | */ |
957 | ||
958 | char * | |
959 | parse_selector (char *method, char **selector) | |
960 | { | |
961 | char *s1 = NULL; | |
962 | char *s2 = NULL; | |
963 | int found_quote = 0; | |
964 | ||
965 | char *nselector = NULL; | |
966 | ||
e8f3fcdd | 967 | gdb_assert (selector != NULL); |
b81654f1 MS |
968 | |
969 | s1 = method; | |
970 | ||
971 | while (isspace (*s1)) | |
972 | s1++; | |
973 | if (*s1 == '\'') | |
974 | { | |
975 | found_quote = 1; | |
976 | s1++; | |
977 | } | |
978 | while (isspace (*s1)) | |
979 | s1++; | |
980 | ||
981 | nselector = s1; | |
982 | s2 = s1; | |
983 | ||
984 | for (;;) { | |
985 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
986 | *s1++ = *s2; | |
987 | else if (isspace (*s2)) | |
988 | ; | |
989 | else if ((*s2 == '\0') || (*s2 == '\'')) | |
990 | break; | |
991 | else | |
992 | return NULL; | |
993 | s2++; | |
994 | } | |
995 | *s1++ = '\0'; | |
996 | ||
997 | while (isspace (*s2)) | |
998 | s2++; | |
999 | if (found_quote) | |
1000 | { | |
1001 | if (*s2 == '\'') | |
1002 | s2++; | |
1003 | while (isspace (*s2)) | |
1004 | s2++; | |
1005 | } | |
1006 | ||
1007 | if (selector != NULL) | |
1008 | *selector = nselector; | |
1009 | ||
1010 | return s2; | |
1011 | } | |
1012 | ||
1013 | char * | |
d2e6263c MS |
1014 | parse_method (char *method, char *type, char **class, |
1015 | char **category, char **selector) | |
b81654f1 MS |
1016 | { |
1017 | char *s1 = NULL; | |
1018 | char *s2 = NULL; | |
1019 | int found_quote = 0; | |
1020 | ||
1021 | char ntype = '\0'; | |
1022 | char *nclass = NULL; | |
1023 | char *ncategory = NULL; | |
1024 | char *nselector = NULL; | |
1025 | ||
e8f3fcdd AC |
1026 | gdb_assert (type != NULL); |
1027 | gdb_assert (class != NULL); | |
1028 | gdb_assert (category != NULL); | |
1029 | gdb_assert (selector != NULL); | |
b81654f1 MS |
1030 | |
1031 | s1 = method; | |
1032 | ||
1033 | while (isspace (*s1)) | |
1034 | s1++; | |
1035 | if (*s1 == '\'') | |
1036 | { | |
1037 | found_quote = 1; | |
1038 | s1++; | |
1039 | } | |
1040 | while (isspace (*s1)) | |
1041 | s1++; | |
1042 | ||
1043 | if ((s1[0] == '+') || (s1[0] == '-')) | |
1044 | ntype = *s1++; | |
1045 | ||
1046 | while (isspace (*s1)) | |
1047 | s1++; | |
1048 | ||
1049 | if (*s1 != '[') | |
1050 | return NULL; | |
1051 | s1++; | |
1052 | ||
1053 | nclass = s1; | |
1054 | while (isalnum (*s1) || (*s1 == '_')) | |
1055 | s1++; | |
1056 | ||
1057 | s2 = s1; | |
1058 | while (isspace (*s2)) | |
1059 | s2++; | |
1060 | ||
1061 | if (*s2 == '(') | |
1062 | { | |
1063 | s2++; | |
1064 | while (isspace (*s2)) | |
1065 | s2++; | |
1066 | ncategory = s2; | |
1067 | while (isalnum (*s2) || (*s2 == '_')) | |
1068 | s2++; | |
1069 | *s2++ = '\0'; | |
1070 | } | |
1071 | ||
d2e6263c | 1072 | /* Truncate the class name now that we're not using the open paren. */ |
b81654f1 MS |
1073 | *s1++ = '\0'; |
1074 | ||
1075 | nselector = s2; | |
1076 | s1 = s2; | |
1077 | ||
1078 | for (;;) { | |
1079 | if (isalnum (*s2) || (*s2 == '_') || (*s2 == ':')) | |
1080 | *s1++ = *s2; | |
1081 | else if (isspace (*s2)) | |
1082 | ; | |
1083 | else if (*s2 == ']') | |
1084 | break; | |
1085 | else | |
1086 | return NULL; | |
1087 | s2++; | |
1088 | } | |
1089 | *s1++ = '\0'; | |
1090 | s2++; | |
1091 | ||
1092 | while (isspace (*s2)) | |
1093 | s2++; | |
1094 | if (found_quote) | |
1095 | { | |
1096 | if (*s2 != '\'') | |
1097 | return NULL; | |
1098 | s2++; | |
1099 | while (isspace (*s2)) | |
1100 | s2++; | |
1101 | } | |
1102 | ||
1103 | if (type != NULL) | |
1104 | *type = ntype; | |
1105 | if (class != NULL) | |
1106 | *class = nclass; | |
1107 | if (category != NULL) | |
1108 | *category = ncategory; | |
1109 | if (selector != NULL) | |
1110 | *selector = nselector; | |
1111 | ||
1112 | return s2; | |
1113 | } | |
1114 | ||
2f9a90b4 | 1115 | static void |
d2e6263c MS |
1116 | find_methods (struct symtab *symtab, char type, |
1117 | const char *class, const char *category, | |
1118 | const char *selector, struct symbol **syms, | |
1119 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1120 | { |
1121 | struct objfile *objfile = NULL; | |
1122 | struct minimal_symbol *msymbol = NULL; | |
1123 | struct block *block = NULL; | |
1124 | struct symbol *sym = NULL; | |
1125 | ||
1126 | char *symname = NULL; | |
1127 | ||
1128 | char ntype = '\0'; | |
1129 | char *nclass = NULL; | |
1130 | char *ncategory = NULL; | |
1131 | char *nselector = NULL; | |
1132 | ||
1133 | unsigned int csym = 0; | |
1134 | unsigned int cdebug = 0; | |
1135 | ||
1136 | static char *tmp = NULL; | |
1137 | static unsigned int tmplen = 0; | |
1138 | ||
e8f3fcdd AC |
1139 | gdb_assert (nsym != NULL); |
1140 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1141 | |
1142 | if (symtab) | |
1143 | block = BLOCKVECTOR_BLOCK (BLOCKVECTOR (symtab), STATIC_BLOCK); | |
1144 | ||
1145 | ALL_MSYMBOLS (objfile, msymbol) | |
1146 | { | |
1147 | QUIT; | |
1148 | ||
1149 | if ((msymbol->type != mst_text) && (msymbol->type != mst_file_text)) | |
d2e6263c | 1150 | /* Not a function or method. */ |
b81654f1 MS |
1151 | continue; |
1152 | ||
1153 | if (symtab) | |
8da065d5 DC |
1154 | if ((SYMBOL_VALUE_ADDRESS (msymbol) < BLOCK_START (block)) || |
1155 | (SYMBOL_VALUE_ADDRESS (msymbol) >= BLOCK_END (block))) | |
d2e6263c | 1156 | /* Not in the specified symtab. */ |
b81654f1 MS |
1157 | continue; |
1158 | ||
36018d2e | 1159 | symname = SYMBOL_NATURAL_NAME (msymbol); |
b81654f1 MS |
1160 | if (symname == NULL) |
1161 | continue; | |
1162 | ||
1163 | if ((symname[0] != '-' && symname[0] != '+') || (symname[1] != '[')) | |
d2e6263c | 1164 | /* Not a method name. */ |
b81654f1 MS |
1165 | continue; |
1166 | ||
1167 | while ((strlen (symname) + 1) >= tmplen) | |
1168 | { | |
1169 | tmplen = (tmplen == 0) ? 1024 : tmplen * 2; | |
1170 | tmp = xrealloc (tmp, tmplen); | |
1171 | } | |
1172 | strcpy (tmp, symname); | |
1173 | ||
1174 | if (parse_method (tmp, &ntype, &nclass, &ncategory, &nselector) == NULL) | |
1175 | continue; | |
1176 | ||
1177 | if ((type != '\0') && (ntype != type)) | |
1178 | continue; | |
1179 | ||
d2e6263c MS |
1180 | if ((class != NULL) |
1181 | && ((nclass == NULL) || (strcmp (class, nclass) != 0))) | |
b81654f1 MS |
1182 | continue; |
1183 | ||
d2e6263c MS |
1184 | if ((category != NULL) && |
1185 | ((ncategory == NULL) || (strcmp (category, ncategory) != 0))) | |
b81654f1 MS |
1186 | continue; |
1187 | ||
d2e6263c MS |
1188 | if ((selector != NULL) && |
1189 | ((nselector == NULL) || (strcmp (selector, nselector) != 0))) | |
b81654f1 MS |
1190 | continue; |
1191 | ||
1192 | sym = find_pc_function (SYMBOL_VALUE_ADDRESS (msymbol)); | |
1193 | if (sym != NULL) | |
1194 | { | |
36018d2e | 1195 | const char *newsymname = SYMBOL_NATURAL_NAME (sym); |
b81654f1 | 1196 | |
b81654f1 MS |
1197 | if (strcmp (symname, newsymname) == 0) |
1198 | { | |
d2e6263c MS |
1199 | /* Found a high-level method sym: swap it into the |
1200 | lower part of sym_arr (below num_debuggable). */ | |
b81654f1 MS |
1201 | if (syms != NULL) |
1202 | { | |
1203 | syms[csym] = syms[cdebug]; | |
1204 | syms[cdebug] = sym; | |
1205 | } | |
1206 | csym++; | |
1207 | cdebug++; | |
1208 | } | |
1209 | else | |
1210 | { | |
d2e6263c MS |
1211 | warning ( |
1212 | "debugging symbol \"%s\" does not match minimal symbol (\"%s\"); ignoring", | |
b81654f1 MS |
1213 | newsymname, symname); |
1214 | if (syms != NULL) | |
1215 | syms[csym] = (struct symbol *) msymbol; | |
1216 | csym++; | |
1217 | } | |
1218 | } | |
1219 | else | |
1220 | { | |
d2e6263c | 1221 | /* Found a non-debuggable method symbol. */ |
b81654f1 MS |
1222 | if (syms != NULL) |
1223 | syms[csym] = (struct symbol *) msymbol; | |
1224 | csym++; | |
1225 | } | |
1226 | } | |
1227 | ||
1228 | if (nsym != NULL) | |
1229 | *nsym = csym; | |
1230 | if (ndebug != NULL) | |
1231 | *ndebug = cdebug; | |
1232 | } | |
1233 | ||
1234 | char *find_imps (struct symtab *symtab, struct block *block, | |
d2e6263c MS |
1235 | char *method, struct symbol **syms, |
1236 | unsigned int *nsym, unsigned int *ndebug) | |
b81654f1 MS |
1237 | { |
1238 | char type = '\0'; | |
1239 | char *class = NULL; | |
1240 | char *category = NULL; | |
1241 | char *selector = NULL; | |
1242 | ||
1243 | unsigned int csym = 0; | |
1244 | unsigned int cdebug = 0; | |
1245 | ||
1246 | unsigned int ncsym = 0; | |
1247 | unsigned int ncdebug = 0; | |
1248 | ||
1249 | char *buf = NULL; | |
1250 | char *tmp = NULL; | |
1251 | ||
e8f3fcdd AC |
1252 | gdb_assert (nsym != NULL); |
1253 | gdb_assert (ndebug != NULL); | |
b81654f1 MS |
1254 | |
1255 | if (nsym != NULL) | |
1256 | *nsym = 0; | |
1257 | if (ndebug != NULL) | |
1258 | *ndebug = 0; | |
1259 | ||
1260 | buf = (char *) alloca (strlen (method) + 1); | |
1261 | strcpy (buf, method); | |
1262 | tmp = parse_method (buf, &type, &class, &category, &selector); | |
1263 | ||
1264 | if (tmp == NULL) { | |
1265 | ||
b81654f1 MS |
1266 | struct symbol *sym = NULL; |
1267 | struct minimal_symbol *msym = NULL; | |
1268 | ||
1269 | strcpy (buf, method); | |
1270 | tmp = parse_selector (buf, &selector); | |
1271 | ||
1272 | if (tmp == NULL) | |
1273 | return NULL; | |
1274 | ||
cdef89d0 | 1275 | sym = lookup_symbol (selector, block, VAR_DOMAIN, 0, NULL); |
b81654f1 MS |
1276 | if (sym != NULL) |
1277 | { | |
1278 | if (syms) | |
1279 | syms[csym] = sym; | |
1280 | csym++; | |
1281 | cdebug++; | |
1282 | } | |
1283 | ||
1284 | if (sym == NULL) | |
1285 | msym = lookup_minimal_symbol (selector, 0, 0); | |
1286 | ||
1287 | if (msym != NULL) | |
1288 | { | |
1289 | if (syms) | |
36e53c63 | 1290 | syms[csym] = (struct symbol *)msym; |
b81654f1 MS |
1291 | csym++; |
1292 | } | |
1293 | } | |
1294 | ||
1295 | if (syms != NULL) | |
d2e6263c MS |
1296 | find_methods (symtab, type, class, category, selector, |
1297 | syms + csym, &ncsym, &ncdebug); | |
b81654f1 | 1298 | else |
d2e6263c MS |
1299 | find_methods (symtab, type, class, category, selector, |
1300 | NULL, &ncsym, &ncdebug); | |
b81654f1 | 1301 | |
d2e6263c | 1302 | /* If we didn't find any methods, just return. */ |
b81654f1 MS |
1303 | if (ncsym == 0 && ncdebug == 0) |
1304 | return method; | |
1305 | ||
1306 | /* Take debug symbols from the second batch of symbols and swap them | |
1307 | * with debug symbols from the first batch. Repeat until either the | |
1308 | * second section is out of debug symbols or the first section is | |
1309 | * full of debug symbols. Either way we have all debug symbols | |
d2e6263c MS |
1310 | * packed to the beginning of the buffer. |
1311 | */ | |
b81654f1 MS |
1312 | |
1313 | if (syms != NULL) | |
1314 | { | |
1315 | while ((cdebug < csym) && (ncdebug > 0)) | |
1316 | { | |
1317 | struct symbol *s = NULL; | |
d2e6263c MS |
1318 | /* First non-debugging symbol. */ |
1319 | unsigned int i = cdebug; | |
1320 | /* Last of second batch of debug symbols. */ | |
1321 | unsigned int j = csym + ncdebug - 1; | |
b81654f1 MS |
1322 | |
1323 | s = syms[j]; | |
1324 | syms[j] = syms[i]; | |
1325 | syms[i] = s; | |
1326 | ||
d2e6263c MS |
1327 | /* We've moved a symbol from the second debug section to the |
1328 | first one. */ | |
b81654f1 MS |
1329 | cdebug++; |
1330 | ncdebug--; | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | csym += ncsym; | |
1335 | cdebug += ncdebug; | |
1336 | ||
1337 | if (nsym != NULL) | |
1338 | *nsym = csym; | |
1339 | if (ndebug != NULL) | |
1340 | *ndebug = cdebug; | |
1341 | ||
1342 | if (syms == NULL) | |
1343 | return method + (tmp - buf); | |
1344 | ||
1345 | if (csym > 1) | |
1346 | { | |
d2e6263c | 1347 | /* Sort debuggable symbols. */ |
b81654f1 | 1348 | if (cdebug > 1) |
d2e6263c MS |
1349 | qsort (syms, cdebug, sizeof (struct minimal_symbol *), |
1350 | compare_classes); | |
b81654f1 | 1351 | |
d2e6263c | 1352 | /* Sort minimal_symbols. */ |
b81654f1 | 1353 | if ((csym - cdebug) > 1) |
d2e6263c MS |
1354 | qsort (&syms[cdebug], csym - cdebug, |
1355 | sizeof (struct minimal_symbol *), compare_classes); | |
b81654f1 | 1356 | } |
d2e6263c MS |
1357 | /* Terminate the sym_arr list. */ |
1358 | syms[csym] = 0; | |
b81654f1 MS |
1359 | |
1360 | return method + (tmp - buf); | |
1361 | } | |
1362 | ||
b9362cc7 | 1363 | static void |
b81654f1 MS |
1364 | print_object_command (char *args, int from_tty) |
1365 | { | |
1366 | struct value *object, *function, *description; | |
36e53c63 | 1367 | CORE_ADDR string_addr, object_addr; |
b81654f1 | 1368 | int i = 0; |
22a44745 | 1369 | gdb_byte c = 0; |
b81654f1 MS |
1370 | |
1371 | if (!args || !*args) | |
d2e6263c MS |
1372 | error ( |
1373 | "The 'print-object' command requires an argument (an Objective-C object)"); | |
b81654f1 MS |
1374 | |
1375 | { | |
1376 | struct expression *expr = parse_expression (args); | |
f86f5ca3 | 1377 | struct cleanup *old_chain = |
d2e6263c | 1378 | make_cleanup (free_current_contents, &expr); |
b81654f1 MS |
1379 | int pc = 0; |
1380 | ||
5f9769d1 PH |
1381 | object = expr->language_defn->la_exp_desc->evaluate_exp |
1382 | (builtin_type_void_data_ptr, expr, &pc, EVAL_NORMAL); | |
b81654f1 MS |
1383 | do_cleanups (old_chain); |
1384 | } | |
1385 | ||
36e53c63 AF |
1386 | /* Validate the address for sanity. */ |
1387 | object_addr = value_as_long (object); | |
1388 | read_memory (object_addr, &c, 1); | |
1389 | ||
7248f48e | 1390 | function = find_function_in_inferior ("_NSPrintForDebugger"); |
36e53c63 | 1391 | if (function == NULL) |
8a3fe4f8 | 1392 | error (_("Unable to locate _NSPrintForDebugger in child process")); |
b81654f1 MS |
1393 | |
1394 | description = call_function_by_hand (function, 1, &object); | |
1395 | ||
7248f48e AF |
1396 | string_addr = value_as_long (description); |
1397 | if (string_addr == 0) | |
8a3fe4f8 | 1398 | error (_("object returns null description")); |
b81654f1 MS |
1399 | |
1400 | read_memory (string_addr + i++, &c, 1); | |
22a44745 | 1401 | if (c != 0) |
b81654f1 | 1402 | do |
d2e6263c | 1403 | { /* Read and print characters up to EOS. */ |
b81654f1 MS |
1404 | QUIT; |
1405 | printf_filtered ("%c", c); | |
1406 | read_memory (string_addr + i++, &c, 1); | |
1407 | } while (c != 0); | |
1408 | else | |
a3f17187 | 1409 | printf_filtered(_("<object returns empty description>")); |
b81654f1 MS |
1410 | printf_filtered ("\n"); |
1411 | } | |
1412 | ||
d2e6263c MS |
1413 | /* The data structure 'methcalls' is used to detect method calls (thru |
1414 | * ObjC runtime lib functions objc_msgSend, objc_msgSendSuper, etc.), | |
1415 | * and ultimately find the method being called. | |
b81654f1 MS |
1416 | */ |
1417 | ||
1418 | struct objc_methcall { | |
1419 | char *name; | |
d2e6263c | 1420 | /* Return instance method to be called. */ |
36e53c63 | 1421 | int (*stop_at) (CORE_ADDR, CORE_ADDR *); |
d2e6263c MS |
1422 | /* Start of pc range corresponding to method invocation. */ |
1423 | CORE_ADDR begin; | |
1424 | /* End of pc range corresponding to method invocation. */ | |
1425 | CORE_ADDR end; | |
b81654f1 MS |
1426 | }; |
1427 | ||
d2e6263c MS |
1428 | static int resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc); |
1429 | static int resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1430 | static int resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc); | |
1431 | static int resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc); | |
b81654f1 MS |
1432 | |
1433 | static struct objc_methcall methcalls[] = { | |
1434 | { "_objc_msgSend", resolve_msgsend, 0, 0}, | |
1435 | { "_objc_msgSend_stret", resolve_msgsend_stret, 0, 0}, | |
1436 | { "_objc_msgSendSuper", resolve_msgsend_super, 0, 0}, | |
1437 | { "_objc_msgSendSuper_stret", resolve_msgsend_super_stret, 0, 0}, | |
1438 | { "_objc_getClass", NULL, 0, 0}, | |
1439 | { "_objc_getMetaClass", NULL, 0, 0} | |
1440 | }; | |
1441 | ||
1442 | #define nmethcalls (sizeof (methcalls) / sizeof (methcalls[0])) | |
1443 | ||
d2e6263c MS |
1444 | /* The following function, "find_objc_msgsend", fills in the data |
1445 | * structure "objc_msgs" by finding the addresses of each of the | |
1446 | * (currently four) functions that it holds (of which objc_msgSend is | |
1447 | * the first). This must be called each time symbols are loaded, in | |
1448 | * case the functions have moved for some reason. | |
b81654f1 MS |
1449 | */ |
1450 | ||
b9362cc7 | 1451 | static void |
b81654f1 MS |
1452 | find_objc_msgsend (void) |
1453 | { | |
1454 | unsigned int i; | |
1455 | for (i = 0; i < nmethcalls; i++) { | |
1456 | ||
1457 | struct minimal_symbol *func; | |
1458 | ||
d2e6263c | 1459 | /* Try both with and without underscore. */ |
b81654f1 MS |
1460 | func = lookup_minimal_symbol (methcalls[i].name, NULL, NULL); |
1461 | if ((func == NULL) && (methcalls[i].name[0] == '_')) { | |
1462 | func = lookup_minimal_symbol (methcalls[i].name + 1, NULL, NULL); | |
1463 | } | |
1464 | if (func == NULL) { | |
1465 | methcalls[i].begin = 0; | |
1466 | methcalls[i].end = 0; | |
1467 | continue; | |
1468 | } | |
1469 | ||
1470 | methcalls[i].begin = SYMBOL_VALUE_ADDRESS (func); | |
1471 | do { | |
1472 | methcalls[i].end = SYMBOL_VALUE_ADDRESS (++func); | |
1473 | } while (methcalls[i].begin == methcalls[i].end); | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | /* find_objc_msgcall (replaces pc_off_limits) | |
1478 | * | |
d2e6263c MS |
1479 | * ALL that this function now does is to determine whether the input |
1480 | * address ("pc") is the address of one of the Objective-C message | |
b81654f1 MS |
1481 | * dispatch functions (mainly objc_msgSend or objc_msgSendSuper), and |
1482 | * if so, it returns the address of the method that will be called. | |
1483 | * | |
1484 | * The old function "pc_off_limits" used to do a lot of other things | |
d2e6263c | 1485 | * in addition, such as detecting shared library jump stubs and |
b81654f1 | 1486 | * returning the address of the shlib function that would be called. |
e76f05fa | 1487 | * That functionality has been moved into the gdbarch_skip_trampoline_code and |
d2e6263c MS |
1488 | * IN_SOLIB_TRAMPOLINE macros, which are resolved in the target- |
1489 | * dependent modules. | |
b81654f1 MS |
1490 | */ |
1491 | ||
1492 | struct objc_submethod_helper_data { | |
36e53c63 | 1493 | int (*f) (CORE_ADDR, CORE_ADDR *); |
b81654f1 MS |
1494 | CORE_ADDR pc; |
1495 | CORE_ADDR *new_pc; | |
1496 | }; | |
1497 | ||
b9362cc7 | 1498 | static int |
7248f48e | 1499 | find_objc_msgcall_submethod_helper (void * arg) |
b81654f1 | 1500 | { |
d2e6263c MS |
1501 | struct objc_submethod_helper_data *s = |
1502 | (struct objc_submethod_helper_data *) arg; | |
1503 | ||
1504 | if (s->f (s->pc, s->new_pc) == 0) | |
b81654f1 | 1505 | return 1; |
d2e6263c | 1506 | else |
b81654f1 | 1507 | return 0; |
b81654f1 MS |
1508 | } |
1509 | ||
b9362cc7 | 1510 | static int |
36e53c63 | 1511 | find_objc_msgcall_submethod (int (*f) (CORE_ADDR, CORE_ADDR *), |
d2e6263c MS |
1512 | CORE_ADDR pc, |
1513 | CORE_ADDR *new_pc) | |
b81654f1 MS |
1514 | { |
1515 | struct objc_submethod_helper_data s; | |
1516 | ||
1517 | s.f = f; | |
1518 | s.pc = pc; | |
1519 | s.new_pc = new_pc; | |
1520 | ||
1521 | if (catch_errors (find_objc_msgcall_submethod_helper, | |
7248f48e | 1522 | (void *) &s, |
d2e6263c MS |
1523 | "Unable to determine target of Objective-C method call (ignoring):\n", |
1524 | RETURN_MASK_ALL) == 0) | |
b81654f1 | 1525 | return 1; |
d2e6263c | 1526 | else |
b81654f1 | 1527 | return 0; |
b81654f1 MS |
1528 | } |
1529 | ||
1530 | int | |
1531 | find_objc_msgcall (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1532 | { | |
1533 | unsigned int i; | |
1534 | ||
1535 | find_objc_msgsend (); | |
5e488a7b AC |
1536 | if (new_pc != NULL) |
1537 | { | |
1538 | *new_pc = 0; | |
1539 | } | |
b81654f1 | 1540 | |
d2e6263c MS |
1541 | for (i = 0; i < nmethcalls; i++) |
1542 | if ((pc >= methcalls[i].begin) && (pc < methcalls[i].end)) | |
1543 | { | |
1544 | if (methcalls[i].stop_at != NULL) | |
1545 | return find_objc_msgcall_submethod (methcalls[i].stop_at, | |
1546 | pc, new_pc); | |
1547 | else | |
1548 | return 0; | |
b81654f1 | 1549 | } |
d2e6263c | 1550 | |
b81654f1 MS |
1551 | return 0; |
1552 | } | |
1553 | ||
a78f21af | 1554 | extern initialize_file_ftype _initialize_objc_language; /* -Wmissing-prototypes */ |
b9362cc7 | 1555 | |
b81654f1 MS |
1556 | void |
1557 | _initialize_objc_language (void) | |
1558 | { | |
1559 | add_language (&objc_language_defn); | |
d2e6263c | 1560 | add_info ("selectors", selectors_info, /* INFO SELECTORS command. */ |
1bedd215 | 1561 | _("All Objective-C selectors, or those matching REGEXP.")); |
d2e6263c | 1562 | add_info ("classes", classes_info, /* INFO CLASSES command. */ |
1bedd215 | 1563 | _("All Objective-C classes, or those matching REGEXP.")); |
b81654f1 | 1564 | add_com ("print-object", class_vars, print_object_command, |
1bedd215 | 1565 | _("Ask an Objective-C object to print itself.")); |
b81654f1 MS |
1566 | add_com_alias ("po", "print-object", class_vars, 1); |
1567 | } | |
1568 | ||
b81654f1 MS |
1569 | static void |
1570 | read_objc_method (CORE_ADDR addr, struct objc_method *method) | |
1571 | { | |
d2e6263c | 1572 | method->name = read_memory_unsigned_integer (addr + 0, 4); |
b81654f1 | 1573 | method->types = read_memory_unsigned_integer (addr + 4, 4); |
d2e6263c | 1574 | method->imp = read_memory_unsigned_integer (addr + 8, 4); |
b81654f1 MS |
1575 | } |
1576 | ||
1577 | static | |
1578 | unsigned long read_objc_methlist_nmethods (CORE_ADDR addr) | |
1579 | { | |
1580 | return read_memory_unsigned_integer (addr + 4, 4); | |
1581 | } | |
1582 | ||
1583 | static void | |
1584 | read_objc_methlist_method (CORE_ADDR addr, unsigned long num, | |
1585 | struct objc_method *method) | |
1586 | { | |
e8f3fcdd | 1587 | gdb_assert (num < read_objc_methlist_nmethods (addr)); |
b81654f1 MS |
1588 | read_objc_method (addr + 8 + (12 * num), method); |
1589 | } | |
1590 | ||
1591 | static void | |
1592 | read_objc_object (CORE_ADDR addr, struct objc_object *object) | |
1593 | { | |
1594 | object->isa = read_memory_unsigned_integer (addr, 4); | |
1595 | } | |
1596 | ||
1597 | static void | |
1598 | read_objc_super (CORE_ADDR addr, struct objc_super *super) | |
1599 | { | |
1600 | super->receiver = read_memory_unsigned_integer (addr, 4); | |
1601 | super->class = read_memory_unsigned_integer (addr + 4, 4); | |
1602 | }; | |
1603 | ||
1604 | static void | |
1605 | read_objc_class (CORE_ADDR addr, struct objc_class *class) | |
1606 | { | |
1607 | class->isa = read_memory_unsigned_integer (addr, 4); | |
1608 | class->super_class = read_memory_unsigned_integer (addr + 4, 4); | |
1609 | class->name = read_memory_unsigned_integer (addr + 8, 4); | |
1610 | class->version = read_memory_unsigned_integer (addr + 12, 4); | |
1611 | class->info = read_memory_unsigned_integer (addr + 16, 4); | |
1612 | class->instance_size = read_memory_unsigned_integer (addr + 18, 4); | |
1613 | class->ivars = read_memory_unsigned_integer (addr + 24, 4); | |
1614 | class->methods = read_memory_unsigned_integer (addr + 28, 4); | |
1615 | class->cache = read_memory_unsigned_integer (addr + 32, 4); | |
1616 | class->protocols = read_memory_unsigned_integer (addr + 36, 4); | |
1617 | } | |
1618 | ||
b9362cc7 | 1619 | static CORE_ADDR |
b81654f1 MS |
1620 | find_implementation_from_class (CORE_ADDR class, CORE_ADDR sel) |
1621 | { | |
1622 | CORE_ADDR subclass = class; | |
1623 | ||
d2e6263c MS |
1624 | while (subclass != 0) |
1625 | { | |
b81654f1 | 1626 | |
d2e6263c MS |
1627 | struct objc_class class_str; |
1628 | unsigned mlistnum = 0; | |
b81654f1 | 1629 | |
d2e6263c | 1630 | read_objc_class (subclass, &class_str); |
b81654f1 | 1631 | |
d2e6263c MS |
1632 | for (;;) |
1633 | { | |
1634 | CORE_ADDR mlist; | |
1635 | unsigned long nmethods; | |
1636 | unsigned long i; | |
b81654f1 | 1637 | |
d2e6263c MS |
1638 | mlist = read_memory_unsigned_integer (class_str.methods + |
1639 | (4 * mlistnum), 4); | |
1640 | if (mlist == 0) | |
1641 | break; | |
b81654f1 | 1642 | |
d2e6263c | 1643 | nmethods = read_objc_methlist_nmethods (mlist); |
b81654f1 | 1644 | |
d2e6263c MS |
1645 | for (i = 0; i < nmethods; i++) |
1646 | { | |
1647 | struct objc_method meth_str; | |
1648 | read_objc_methlist_method (mlist, i, &meth_str); | |
b81654f1 MS |
1649 | |
1650 | #if 0 | |
d2e6263c MS |
1651 | fprintf (stderr, |
1652 | "checking method 0x%lx against selector 0x%lx\n", | |
1653 | meth_str.name, sel); | |
b81654f1 MS |
1654 | #endif |
1655 | ||
d2e6263c | 1656 | if (meth_str.name == sel) |
1abf022c AF |
1657 | /* FIXME: hppa arch was doing a pointer dereference |
1658 | here. There needs to be a better way to do that. */ | |
1659 | return meth_str.imp; | |
d2e6263c MS |
1660 | } |
1661 | mlistnum++; | |
b81654f1 | 1662 | } |
d2e6263c | 1663 | subclass = class_str.super_class; |
b81654f1 | 1664 | } |
b81654f1 MS |
1665 | |
1666 | return 0; | |
1667 | } | |
1668 | ||
b9362cc7 | 1669 | static CORE_ADDR |
b81654f1 MS |
1670 | find_implementation (CORE_ADDR object, CORE_ADDR sel) |
1671 | { | |
1672 | struct objc_object ostr; | |
1673 | ||
d2e6263c MS |
1674 | if (object == 0) |
1675 | return 0; | |
b81654f1 | 1676 | read_objc_object (object, &ostr); |
d2e6263c MS |
1677 | if (ostr.isa == 0) |
1678 | return 0; | |
b81654f1 MS |
1679 | |
1680 | return find_implementation_from_class (ostr.isa, sel); | |
1681 | } | |
1682 | ||
a0273b2f | 1683 | #define OBJC_FETCH_POINTER_ARGUMENT(argi) \ |
d99344c0 UW |
1684 | gdbarch_fetch_pointer_argument (current_gdbarch, get_current_frame (), \ |
1685 | argi, builtin_type_void_func_ptr) | |
a0273b2f | 1686 | |
b81654f1 MS |
1687 | static int |
1688 | resolve_msgsend (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1689 | { | |
1690 | CORE_ADDR object; | |
1691 | CORE_ADDR sel; | |
1692 | CORE_ADDR res; | |
1693 | ||
a0273b2f AF |
1694 | object = OBJC_FETCH_POINTER_ARGUMENT (0); |
1695 | sel = OBJC_FETCH_POINTER_ARGUMENT (1); | |
b81654f1 MS |
1696 | |
1697 | res = find_implementation (object, sel); | |
d2e6263c MS |
1698 | if (new_pc != 0) |
1699 | *new_pc = res; | |
1700 | if (res == 0) | |
1701 | return 1; | |
b81654f1 MS |
1702 | return 0; |
1703 | } | |
1704 | ||
1705 | static int | |
1706 | resolve_msgsend_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1707 | { | |
1708 | CORE_ADDR object; | |
1709 | CORE_ADDR sel; | |
1710 | CORE_ADDR res; | |
1711 | ||
a0273b2f AF |
1712 | object = OBJC_FETCH_POINTER_ARGUMENT (1); |
1713 | sel = OBJC_FETCH_POINTER_ARGUMENT (2); | |
b81654f1 MS |
1714 | |
1715 | res = find_implementation (object, sel); | |
d2e6263c MS |
1716 | if (new_pc != 0) |
1717 | *new_pc = res; | |
1718 | if (res == 0) | |
1719 | return 1; | |
b81654f1 MS |
1720 | return 0; |
1721 | } | |
1722 | ||
1723 | static int | |
1724 | resolve_msgsend_super (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1725 | { | |
1726 | struct objc_super sstr; | |
1727 | ||
1728 | CORE_ADDR super; | |
1729 | CORE_ADDR sel; | |
1730 | CORE_ADDR res; | |
1731 | ||
a0273b2f AF |
1732 | super = OBJC_FETCH_POINTER_ARGUMENT (0); |
1733 | sel = OBJC_FETCH_POINTER_ARGUMENT (1); | |
b81654f1 MS |
1734 | |
1735 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1736 | if (sstr.class == 0) |
1737 | return 0; | |
b81654f1 MS |
1738 | |
1739 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1740 | if (new_pc != 0) |
1741 | *new_pc = res; | |
1742 | if (res == 0) | |
1743 | return 1; | |
b81654f1 MS |
1744 | return 0; |
1745 | } | |
1746 | ||
1747 | static int | |
1748 | resolve_msgsend_super_stret (CORE_ADDR pc, CORE_ADDR *new_pc) | |
1749 | { | |
1750 | struct objc_super sstr; | |
1751 | ||
1752 | CORE_ADDR super; | |
1753 | CORE_ADDR sel; | |
1754 | CORE_ADDR res; | |
1755 | ||
a0273b2f AF |
1756 | super = OBJC_FETCH_POINTER_ARGUMENT (1); |
1757 | sel = OBJC_FETCH_POINTER_ARGUMENT (2); | |
b81654f1 MS |
1758 | |
1759 | read_objc_super (super, &sstr); | |
d2e6263c MS |
1760 | if (sstr.class == 0) |
1761 | return 0; | |
b81654f1 MS |
1762 | |
1763 | res = find_implementation_from_class (sstr.class, sel); | |
d2e6263c MS |
1764 | if (new_pc != 0) |
1765 | *new_pc = res; | |
1766 | if (res == 0) | |
1767 | return 1; | |
b81654f1 MS |
1768 | return 0; |
1769 | } |