| 1 | /* Support for printing C++ values for GDB, the GNU debugger. |
| 2 | Copyright 1986, 1988, 1989, 1991, 1994, 1995, 1996 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "obstack.h" |
| 23 | #include "symtab.h" |
| 24 | #include "gdbtypes.h" |
| 25 | #include "expression.h" |
| 26 | #include "value.h" |
| 27 | #include "command.h" |
| 28 | #include "gdbcmd.h" |
| 29 | #include "demangle.h" |
| 30 | #include "annotate.h" |
| 31 | #include "gdb_string.h" |
| 32 | #include "c-lang.h" |
| 33 | #include "target.h" |
| 34 | |
| 35 | int vtblprint; /* Controls printing of vtbl's */ |
| 36 | int objectprint; /* Controls looking up an object's derived type |
| 37 | using what we find in its vtables. */ |
| 38 | static int static_field_print; /* Controls printing of static fields. */ |
| 39 | |
| 40 | static struct obstack dont_print_vb_obstack; |
| 41 | static struct obstack dont_print_statmem_obstack; |
| 42 | |
| 43 | static void |
| 44 | cp_print_static_field PARAMS ((struct type *, value_ptr, GDB_FILE *, int, int, |
| 45 | enum val_prettyprint)); |
| 46 | |
| 47 | static void |
| 48 | cp_print_value PARAMS ((struct type *, char *, CORE_ADDR, GDB_FILE *, |
| 49 | int, int, enum val_prettyprint, struct type **)); |
| 50 | |
| 51 | void |
| 52 | cp_print_class_method (valaddr, type, stream) |
| 53 | char *valaddr; |
| 54 | struct type *type; |
| 55 | GDB_FILE *stream; |
| 56 | { |
| 57 | struct type *domain; |
| 58 | struct fn_field *f = NULL; |
| 59 | int j = 0; |
| 60 | int len2; |
| 61 | int offset; |
| 62 | char *kind = ""; |
| 63 | CORE_ADDR addr; |
| 64 | struct symbol *sym; |
| 65 | unsigned len; |
| 66 | unsigned int i; |
| 67 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); |
| 68 | |
| 69 | domain = TYPE_DOMAIN_TYPE (target_type); |
| 70 | if (domain == (struct type *)NULL) |
| 71 | { |
| 72 | fprintf_filtered (stream, "<unknown>"); |
| 73 | return; |
| 74 | } |
| 75 | addr = unpack_pointer (lookup_pointer_type (builtin_type_void), valaddr); |
| 76 | if (METHOD_PTR_IS_VIRTUAL (addr)) |
| 77 | { |
| 78 | offset = METHOD_PTR_TO_VOFFSET (addr); |
| 79 | len = TYPE_NFN_FIELDS (domain); |
| 80 | for (i = 0; i < len; i++) |
| 81 | { |
| 82 | f = TYPE_FN_FIELDLIST1 (domain, i); |
| 83 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); |
| 84 | |
| 85 | for (j = 0; j < len2; j++) |
| 86 | { |
| 87 | QUIT; |
| 88 | if (TYPE_FN_FIELD_VOFFSET (f, j) == offset) |
| 89 | { |
| 90 | kind = "virtual "; |
| 91 | goto common; |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | else |
| 97 | { |
| 98 | sym = find_pc_function (addr); |
| 99 | if (sym == 0) |
| 100 | { |
| 101 | error ("invalid pointer to member function"); |
| 102 | } |
| 103 | len = TYPE_NFN_FIELDS (domain); |
| 104 | for (i = 0; i < len; i++) |
| 105 | { |
| 106 | f = TYPE_FN_FIELDLIST1 (domain, i); |
| 107 | len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i); |
| 108 | |
| 109 | for (j = 0; j < len2; j++) |
| 110 | { |
| 111 | QUIT; |
| 112 | if (TYPE_FN_FIELD_STUB (f, j)) |
| 113 | check_stub_method (domain, i, j); |
| 114 | if (STREQ (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j))) |
| 115 | { |
| 116 | goto common; |
| 117 | } |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | common: |
| 122 | if (i < len) |
| 123 | { |
| 124 | fprintf_filtered (stream, "&"); |
| 125 | c_type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (f, j), stream, 0, 0); |
| 126 | fprintf_unfiltered (stream, kind); |
| 127 | if (TYPE_FN_FIELD_PHYSNAME (f, j)[0] == '_' |
| 128 | && is_cplus_marker (TYPE_FN_FIELD_PHYSNAME (f, j)[1])) |
| 129 | { |
| 130 | cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j) + 1, "~", |
| 131 | TYPE_FN_FIELDLIST_NAME (domain, i), |
| 132 | 0, stream); |
| 133 | } |
| 134 | else |
| 135 | { |
| 136 | cp_type_print_method_args (TYPE_FN_FIELD_ARGS (f, j), "", |
| 137 | TYPE_FN_FIELDLIST_NAME (domain, i), |
| 138 | 0, stream); |
| 139 | } |
| 140 | } |
| 141 | else |
| 142 | { |
| 143 | fprintf_filtered (stream, "("); |
| 144 | type_print (type, "", stream, -1); |
| 145 | fprintf_filtered (stream, ") %d", (int) addr >> 3); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | /* This was what it was for gcc 2.4.5 and earlier. */ |
| 150 | static const char vtbl_ptr_name_old[] = |
| 151 | { CPLUS_MARKER,'v','t','b','l','_','p','t','r','_','t','y','p','e', 0 }; |
| 152 | /* It was changed to this after 2.4.5. */ |
| 153 | const char vtbl_ptr_name[] = |
| 154 | { '_','_','v','t','b','l','_','p','t','r','_','t','y','p','e', 0 }; |
| 155 | |
| 156 | /* Return truth value for assertion that TYPE is of the type |
| 157 | "pointer to virtual function". */ |
| 158 | |
| 159 | int |
| 160 | cp_is_vtbl_ptr_type(type) |
| 161 | struct type *type; |
| 162 | { |
| 163 | char *typename = type_name_no_tag (type); |
| 164 | |
| 165 | return (typename != NULL |
| 166 | && (STREQ (typename, vtbl_ptr_name) |
| 167 | || STREQ (typename, vtbl_ptr_name_old))); |
| 168 | } |
| 169 | |
| 170 | /* Return truth value for the assertion that TYPE is of the type |
| 171 | "pointer to virtual function table". */ |
| 172 | |
| 173 | int |
| 174 | cp_is_vtbl_member(type) |
| 175 | struct type *type; |
| 176 | { |
| 177 | if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| 178 | { |
| 179 | type = TYPE_TARGET_TYPE (type); |
| 180 | if (TYPE_CODE (type) == TYPE_CODE_ARRAY) |
| 181 | { |
| 182 | type = TYPE_TARGET_TYPE (type); |
| 183 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT /* if not using thunks */ |
| 184 | || TYPE_CODE (type) == TYPE_CODE_PTR) /* if using thunks */ |
| 185 | { |
| 186 | /* Virtual functions tables are full of pointers |
| 187 | to virtual functions. */ |
| 188 | return cp_is_vtbl_ptr_type (type); |
| 189 | } |
| 190 | } |
| 191 | } |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | /* Mutually recursive subroutines of cp_print_value and c_val_print to |
| 196 | print out a structure's fields: cp_print_value_fields and cp_print_value. |
| 197 | |
| 198 | TYPE, VALADDR, ADDRESS, STREAM, RECURSE, and PRETTY have the |
| 199 | same meanings as in cp_print_value and c_val_print. |
| 200 | |
| 201 | DONT_PRINT is an array of baseclass types that we |
| 202 | should not print, or zero if called from top level. */ |
| 203 | |
| 204 | void |
| 205 | cp_print_value_fields (type, valaddr, address, stream, format, recurse, pretty, |
| 206 | dont_print_vb, dont_print_statmem) |
| 207 | struct type *type; |
| 208 | char *valaddr; |
| 209 | CORE_ADDR address; |
| 210 | GDB_FILE *stream; |
| 211 | int format; |
| 212 | int recurse; |
| 213 | enum val_prettyprint pretty; |
| 214 | struct type **dont_print_vb; |
| 215 | int dont_print_statmem; |
| 216 | { |
| 217 | int i, len, n_baseclasses; |
| 218 | struct obstack tmp_obstack; |
| 219 | char *last_dont_print = obstack_next_free (&dont_print_statmem_obstack); |
| 220 | |
| 221 | CHECK_TYPEDEF (type); |
| 222 | |
| 223 | fprintf_filtered (stream, "{"); |
| 224 | len = TYPE_NFIELDS (type); |
| 225 | n_baseclasses = TYPE_N_BASECLASSES (type); |
| 226 | |
| 227 | /* Print out baseclasses such that we don't print |
| 228 | duplicates of virtual baseclasses. */ |
| 229 | if (n_baseclasses > 0) |
| 230 | cp_print_value (type, valaddr, address, stream, |
| 231 | format, recurse+1, pretty, dont_print_vb); |
| 232 | |
| 233 | if (!len && n_baseclasses == 1) |
| 234 | fprintf_filtered (stream, "<No data fields>"); |
| 235 | else |
| 236 | { |
| 237 | extern int inspect_it; |
| 238 | int fields_seen = 0; |
| 239 | |
| 240 | if (dont_print_statmem == 0) |
| 241 | { |
| 242 | /* If we're at top level, carve out a completely fresh |
| 243 | chunk of the obstack and use that until this particular |
| 244 | invocation returns. */ |
| 245 | tmp_obstack = dont_print_statmem_obstack; |
| 246 | obstack_finish (&dont_print_statmem_obstack); |
| 247 | } |
| 248 | |
| 249 | for (i = n_baseclasses; i < len; i++) |
| 250 | { |
| 251 | /* If requested, skip printing of static fields. */ |
| 252 | if (!static_field_print && TYPE_FIELD_STATIC (type, i)) |
| 253 | continue; |
| 254 | if (fields_seen) |
| 255 | fprintf_filtered (stream, ", "); |
| 256 | else if (n_baseclasses > 0) |
| 257 | { |
| 258 | if (pretty) |
| 259 | { |
| 260 | fprintf_filtered (stream, "\n"); |
| 261 | print_spaces_filtered (2 + 2 * recurse, stream); |
| 262 | fputs_filtered ("members of ", stream); |
| 263 | fputs_filtered (type_name_no_tag (type), stream); |
| 264 | fputs_filtered (": ", stream); |
| 265 | } |
| 266 | } |
| 267 | fields_seen = 1; |
| 268 | |
| 269 | if (pretty) |
| 270 | { |
| 271 | fprintf_filtered (stream, "\n"); |
| 272 | print_spaces_filtered (2 + 2 * recurse, stream); |
| 273 | } |
| 274 | else |
| 275 | { |
| 276 | wrap_here (n_spaces (2 + 2 * recurse)); |
| 277 | } |
| 278 | if (inspect_it) |
| 279 | { |
| 280 | if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) |
| 281 | fputs_filtered ("\"( ptr \"", stream); |
| 282 | else |
| 283 | fputs_filtered ("\"( nodef \"", stream); |
| 284 | if (TYPE_FIELD_STATIC (type, i)) |
| 285 | fputs_filtered ("static ", stream); |
| 286 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), |
| 287 | language_cplus, |
| 288 | DMGL_PARAMS | DMGL_ANSI); |
| 289 | fputs_filtered ("\" \"", stream); |
| 290 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), |
| 291 | language_cplus, |
| 292 | DMGL_PARAMS | DMGL_ANSI); |
| 293 | fputs_filtered ("\") \"", stream); |
| 294 | } |
| 295 | else |
| 296 | { |
| 297 | annotate_field_begin (TYPE_FIELD_TYPE (type, i)); |
| 298 | |
| 299 | if (TYPE_FIELD_STATIC (type, i)) |
| 300 | fputs_filtered ("static ", stream); |
| 301 | fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), |
| 302 | language_cplus, |
| 303 | DMGL_PARAMS | DMGL_ANSI); |
| 304 | annotate_field_name_end (); |
| 305 | fputs_filtered (" = ", stream); |
| 306 | annotate_field_value (); |
| 307 | } |
| 308 | |
| 309 | if (!TYPE_FIELD_STATIC (type, i) && TYPE_FIELD_PACKED (type, i)) |
| 310 | { |
| 311 | value_ptr v; |
| 312 | |
| 313 | /* Bitfields require special handling, especially due to byte |
| 314 | order problems. */ |
| 315 | if (TYPE_FIELD_IGNORE (type, i)) |
| 316 | { |
| 317 | fputs_filtered ("<optimized out or zero length>", stream); |
| 318 | } |
| 319 | else |
| 320 | { |
| 321 | v = value_from_longest (TYPE_FIELD_TYPE (type, i), |
| 322 | unpack_field_as_long (type, valaddr, i)); |
| 323 | |
| 324 | val_print (TYPE_FIELD_TYPE(type, i), VALUE_CONTENTS (v), 0, |
| 325 | stream, format, 0, recurse + 1, pretty); |
| 326 | } |
| 327 | } |
| 328 | else |
| 329 | { |
| 330 | if (TYPE_FIELD_IGNORE (type, i)) |
| 331 | { |
| 332 | fputs_filtered ("<optimized out or zero length>", stream); |
| 333 | } |
| 334 | else if (TYPE_FIELD_STATIC (type, i)) |
| 335 | { |
| 336 | value_ptr v; |
| 337 | char *phys_name = TYPE_FIELD_STATIC_PHYSNAME (type, i); |
| 338 | struct symbol *sym = |
| 339 | lookup_symbol (phys_name, 0, VAR_NAMESPACE, 0, NULL); |
| 340 | if (sym == NULL) |
| 341 | fputs_filtered ("<optimized out>", stream); |
| 342 | else |
| 343 | { |
| 344 | v = value_at (TYPE_FIELD_TYPE (type, i), |
| 345 | (CORE_ADDR)SYMBOL_BLOCK_VALUE (sym)); |
| 346 | cp_print_static_field (TYPE_FIELD_TYPE (type, i), v, |
| 347 | stream, format, recurse + 1, |
| 348 | pretty); |
| 349 | } |
| 350 | } |
| 351 | else |
| 352 | { |
| 353 | val_print (TYPE_FIELD_TYPE (type, i), |
| 354 | valaddr + TYPE_FIELD_BITPOS (type, i) / 8, |
| 355 | address + TYPE_FIELD_BITPOS (type, i) / 8, |
| 356 | stream, format, 0, recurse + 1, pretty); |
| 357 | } |
| 358 | } |
| 359 | annotate_field_end (); |
| 360 | } |
| 361 | |
| 362 | if (dont_print_statmem == 0) |
| 363 | { |
| 364 | /* Free the space used to deal with the printing |
| 365 | of the members from top level. */ |
| 366 | obstack_free (&dont_print_statmem_obstack, last_dont_print); |
| 367 | dont_print_statmem_obstack = tmp_obstack; |
| 368 | } |
| 369 | |
| 370 | if (pretty) |
| 371 | { |
| 372 | fprintf_filtered (stream, "\n"); |
| 373 | print_spaces_filtered (2 * recurse, stream); |
| 374 | } |
| 375 | } |
| 376 | fprintf_filtered (stream, "}"); |
| 377 | } |
| 378 | |
| 379 | /* Special val_print routine to avoid printing multiple copies of virtual |
| 380 | baseclasses. */ |
| 381 | |
| 382 | static void |
| 383 | cp_print_value (type, valaddr, address, stream, format, recurse, pretty, |
| 384 | dont_print_vb) |
| 385 | struct type *type; |
| 386 | char *valaddr; |
| 387 | CORE_ADDR address; |
| 388 | GDB_FILE *stream; |
| 389 | int format; |
| 390 | int recurse; |
| 391 | enum val_prettyprint pretty; |
| 392 | struct type **dont_print_vb; |
| 393 | { |
| 394 | struct obstack tmp_obstack; |
| 395 | struct type **last_dont_print |
| 396 | = (struct type **)obstack_next_free (&dont_print_vb_obstack); |
| 397 | int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
| 398 | |
| 399 | if (dont_print_vb == 0) |
| 400 | { |
| 401 | /* If we're at top level, carve out a completely fresh |
| 402 | chunk of the obstack and use that until this particular |
| 403 | invocation returns. */ |
| 404 | tmp_obstack = dont_print_vb_obstack; |
| 405 | /* Bump up the high-water mark. Now alpha is omega. */ |
| 406 | obstack_finish (&dont_print_vb_obstack); |
| 407 | } |
| 408 | |
| 409 | for (i = 0; i < n_baseclasses; i++) |
| 410 | { |
| 411 | int boffset; |
| 412 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
| 413 | char *basename = TYPE_NAME (baseclass); |
| 414 | char *base_valaddr; |
| 415 | |
| 416 | if (BASETYPE_VIA_VIRTUAL (type, i)) |
| 417 | { |
| 418 | struct type **first_dont_print |
| 419 | = (struct type **)obstack_base (&dont_print_vb_obstack); |
| 420 | |
| 421 | int j = (struct type **)obstack_next_free (&dont_print_vb_obstack) |
| 422 | - first_dont_print; |
| 423 | |
| 424 | while (--j >= 0) |
| 425 | if (baseclass == first_dont_print[j]) |
| 426 | goto flush_it; |
| 427 | |
| 428 | obstack_ptr_grow (&dont_print_vb_obstack, baseclass); |
| 429 | } |
| 430 | |
| 431 | boffset = baseclass_offset (type, i , valaddr, address); |
| 432 | |
| 433 | if (pretty) |
| 434 | { |
| 435 | fprintf_filtered (stream, "\n"); |
| 436 | print_spaces_filtered (2 * recurse, stream); |
| 437 | } |
| 438 | fputs_filtered ("<", stream); |
| 439 | /* Not sure what the best notation is in the case where there is no |
| 440 | baseclass name. */ |
| 441 | fputs_filtered (basename ? basename : "", stream); |
| 442 | fputs_filtered ("> = ", stream); |
| 443 | |
| 444 | /* The virtual base class pointer might have been clobbered by the |
| 445 | user program. Make sure that it still points to a valid memory |
| 446 | location. */ |
| 447 | |
| 448 | if (boffset != -1 && (boffset < 0 || boffset >= TYPE_LENGTH (type))) |
| 449 | { |
| 450 | base_valaddr = (char *) alloca (TYPE_LENGTH (baseclass)); |
| 451 | if (target_read_memory (address + boffset, base_valaddr, |
| 452 | TYPE_LENGTH (baseclass)) != 0) |
| 453 | boffset = -1; |
| 454 | } |
| 455 | else |
| 456 | base_valaddr = valaddr + boffset; |
| 457 | |
| 458 | if (boffset == -1) |
| 459 | fprintf_filtered (stream, "<invalid address>"); |
| 460 | else |
| 461 | cp_print_value_fields (baseclass, base_valaddr, address + boffset, |
| 462 | stream, format, recurse, pretty, |
| 463 | (struct type **) obstack_base (&dont_print_vb_obstack), |
| 464 | 0); |
| 465 | fputs_filtered (", ", stream); |
| 466 | |
| 467 | flush_it: |
| 468 | ; |
| 469 | } |
| 470 | |
| 471 | if (dont_print_vb == 0) |
| 472 | { |
| 473 | /* Free the space used to deal with the printing |
| 474 | of this type from top level. */ |
| 475 | obstack_free (&dont_print_vb_obstack, last_dont_print); |
| 476 | /* Reset watermark so that we can continue protecting |
| 477 | ourselves from whatever we were protecting ourselves. */ |
| 478 | dont_print_vb_obstack = tmp_obstack; |
| 479 | } |
| 480 | } |
| 481 | |
| 482 | /* Print value of a static member. |
| 483 | To avoid infinite recursion when printing a class that contains |
| 484 | a static instance of the class, we keep the addresses of all printed |
| 485 | static member classes in an obstack and refuse to print them more |
| 486 | than once. |
| 487 | |
| 488 | VAL contains the value to print, TYPE, STREAM, RECURSE, and PRETTY |
| 489 | have the same meanings as in c_val_print. */ |
| 490 | |
| 491 | static void |
| 492 | cp_print_static_field (type, val, stream, format, recurse, pretty) |
| 493 | struct type *type; |
| 494 | value_ptr val; |
| 495 | GDB_FILE *stream; |
| 496 | int format; |
| 497 | int recurse; |
| 498 | enum val_prettyprint pretty; |
| 499 | { |
| 500 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT) |
| 501 | { |
| 502 | CORE_ADDR *first_dont_print; |
| 503 | int i; |
| 504 | |
| 505 | first_dont_print |
| 506 | = (CORE_ADDR *)obstack_base (&dont_print_statmem_obstack); |
| 507 | i = (CORE_ADDR *)obstack_next_free (&dont_print_statmem_obstack) |
| 508 | - first_dont_print; |
| 509 | |
| 510 | while (--i >= 0) |
| 511 | { |
| 512 | if (VALUE_ADDRESS (val) == first_dont_print[i]) |
| 513 | { |
| 514 | fputs_filtered ("<same as static member of an already seen type>", |
| 515 | stream); |
| 516 | return; |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | obstack_grow (&dont_print_statmem_obstack, (char *) &VALUE_ADDRESS (val), |
| 521 | sizeof (CORE_ADDR)); |
| 522 | |
| 523 | CHECK_TYPEDEF (type); |
| 524 | cp_print_value_fields (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val), |
| 525 | stream, format, recurse, pretty, NULL, 1); |
| 526 | return; |
| 527 | } |
| 528 | val_print (type, VALUE_CONTENTS (val), VALUE_ADDRESS (val), |
| 529 | stream, format, 0, recurse, pretty); |
| 530 | } |
| 531 | |
| 532 | void |
| 533 | cp_print_class_member (valaddr, domain, stream, prefix) |
| 534 | char *valaddr; |
| 535 | struct type *domain; |
| 536 | GDB_FILE *stream; |
| 537 | char *prefix; |
| 538 | { |
| 539 | |
| 540 | /* VAL is a byte offset into the structure type DOMAIN. |
| 541 | Find the name of the field for that offset and |
| 542 | print it. */ |
| 543 | int extra = 0; |
| 544 | int bits = 0; |
| 545 | register unsigned int i; |
| 546 | unsigned len = TYPE_NFIELDS (domain); |
| 547 | /* @@ Make VAL into bit offset */ |
| 548 | LONGEST val = unpack_long (builtin_type_int, valaddr) << 3; |
| 549 | for (i = TYPE_N_BASECLASSES (domain); i < len; i++) |
| 550 | { |
| 551 | int bitpos = TYPE_FIELD_BITPOS (domain, i); |
| 552 | QUIT; |
| 553 | if (val == bitpos) |
| 554 | break; |
| 555 | if (val < bitpos && i != 0) |
| 556 | { |
| 557 | /* Somehow pointing into a field. */ |
| 558 | i -= 1; |
| 559 | extra = (val - TYPE_FIELD_BITPOS (domain, i)); |
| 560 | if (extra & 0x7) |
| 561 | bits = 1; |
| 562 | else |
| 563 | extra >>= 3; |
| 564 | break; |
| 565 | } |
| 566 | } |
| 567 | if (i < len) |
| 568 | { |
| 569 | char *name; |
| 570 | fprintf_filtered (stream, prefix); |
| 571 | name = type_name_no_tag (domain); |
| 572 | if (name) |
| 573 | fputs_filtered (name, stream); |
| 574 | else |
| 575 | c_type_print_base (domain, stream, 0, 0); |
| 576 | fprintf_filtered (stream, "::"); |
| 577 | fputs_filtered (TYPE_FIELD_NAME (domain, i), stream); |
| 578 | if (extra) |
| 579 | fprintf_filtered (stream, " + %d bytes", extra); |
| 580 | if (bits) |
| 581 | fprintf_filtered (stream, " (offset in bits)"); |
| 582 | } |
| 583 | else |
| 584 | fprintf_filtered (stream, "%d", val >> 3); |
| 585 | } |
| 586 | |
| 587 | void |
| 588 | _initialize_cp_valprint () |
| 589 | { |
| 590 | add_show_from_set |
| 591 | (add_set_cmd ("static-members", class_support, var_boolean, |
| 592 | (char *)&static_field_print, |
| 593 | "Set printing of C++ static members.", |
| 594 | &setprintlist), |
| 595 | &showprintlist); |
| 596 | /* Turn on printing of static fields. */ |
| 597 | static_field_print = 1; |
| 598 | |
| 599 | add_show_from_set |
| 600 | (add_set_cmd ("vtbl", class_support, var_boolean, (char *)&vtblprint, |
| 601 | "Set printing of C++ virtual function tables.", |
| 602 | &setprintlist), |
| 603 | &showprintlist); |
| 604 | |
| 605 | add_show_from_set |
| 606 | (add_set_cmd ("object", class_support, var_boolean, (char *)&objectprint, |
| 607 | "Set printing of object's derived type based on vtable info.", |
| 608 | &setprintlist), |
| 609 | &showprintlist); |
| 610 | |
| 611 | /* Give people the defaults which they are used to. */ |
| 612 | objectprint = 0; |
| 613 | vtblprint = 0; |
| 614 | obstack_begin (&dont_print_vb_obstack, 32 * sizeof (struct type *)); |
| 615 | obstack_specify_allocation (&dont_print_statmem_obstack, |
| 616 | 32 * sizeof (CORE_ADDR), sizeof (CORE_ADDR), |
| 617 | xmalloc, free); |
| 618 | } |