| 1 | /* Support routines for manipulating internal types for GDB. |
| 2 | |
| 3 | Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "gdb_string.h" |
| 24 | #include "bfd.h" |
| 25 | #include "symtab.h" |
| 26 | #include "symfile.h" |
| 27 | #include "objfiles.h" |
| 28 | #include "gdbtypes.h" |
| 29 | #include "expression.h" |
| 30 | #include "language.h" |
| 31 | #include "target.h" |
| 32 | #include "value.h" |
| 33 | #include "demangle.h" |
| 34 | #include "complaints.h" |
| 35 | #include "gdbcmd.h" |
| 36 | #include "cp-abi.h" |
| 37 | #include "gdb_assert.h" |
| 38 | #include "hashtab.h" |
| 39 | #include "exceptions.h" |
| 40 | |
| 41 | /* Initialize BADNESS constants. */ |
| 42 | |
| 43 | const struct rank LENGTH_MISMATCH_BADNESS = {100,0}; |
| 44 | |
| 45 | const struct rank TOO_FEW_PARAMS_BADNESS = {100,0}; |
| 46 | const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0}; |
| 47 | |
| 48 | const struct rank EXACT_MATCH_BADNESS = {0,0}; |
| 49 | |
| 50 | const struct rank INTEGER_PROMOTION_BADNESS = {1,0}; |
| 51 | const struct rank FLOAT_PROMOTION_BADNESS = {1,0}; |
| 52 | const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0}; |
| 53 | const struct rank INTEGER_CONVERSION_BADNESS = {2,0}; |
| 54 | const struct rank FLOAT_CONVERSION_BADNESS = {2,0}; |
| 55 | const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0}; |
| 56 | const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0}; |
| 57 | const struct rank BOOL_PTR_CONVERSION_BADNESS = {3,0}; |
| 58 | const struct rank BASE_CONVERSION_BADNESS = {2,0}; |
| 59 | const struct rank REFERENCE_CONVERSION_BADNESS = {2,0}; |
| 60 | const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0}; |
| 61 | const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0}; |
| 62 | |
| 63 | /* Floatformat pairs. */ |
| 64 | const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = { |
| 65 | &floatformat_ieee_half_big, |
| 66 | &floatformat_ieee_half_little |
| 67 | }; |
| 68 | const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = { |
| 69 | &floatformat_ieee_single_big, |
| 70 | &floatformat_ieee_single_little |
| 71 | }; |
| 72 | const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = { |
| 73 | &floatformat_ieee_double_big, |
| 74 | &floatformat_ieee_double_little |
| 75 | }; |
| 76 | const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = { |
| 77 | &floatformat_ieee_double_big, |
| 78 | &floatformat_ieee_double_littlebyte_bigword |
| 79 | }; |
| 80 | const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = { |
| 81 | &floatformat_i387_ext, |
| 82 | &floatformat_i387_ext |
| 83 | }; |
| 84 | const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = { |
| 85 | &floatformat_m68881_ext, |
| 86 | &floatformat_m68881_ext |
| 87 | }; |
| 88 | const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = { |
| 89 | &floatformat_arm_ext_big, |
| 90 | &floatformat_arm_ext_littlebyte_bigword |
| 91 | }; |
| 92 | const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = { |
| 93 | &floatformat_ia64_spill_big, |
| 94 | &floatformat_ia64_spill_little |
| 95 | }; |
| 96 | const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = { |
| 97 | &floatformat_ia64_quad_big, |
| 98 | &floatformat_ia64_quad_little |
| 99 | }; |
| 100 | const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = { |
| 101 | &floatformat_vax_f, |
| 102 | &floatformat_vax_f |
| 103 | }; |
| 104 | const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = { |
| 105 | &floatformat_vax_d, |
| 106 | &floatformat_vax_d |
| 107 | }; |
| 108 | const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = { |
| 109 | &floatformat_ibm_long_double, |
| 110 | &floatformat_ibm_long_double |
| 111 | }; |
| 112 | |
| 113 | |
| 114 | int opaque_type_resolution = 1; |
| 115 | static void |
| 116 | show_opaque_type_resolution (struct ui_file *file, int from_tty, |
| 117 | struct cmd_list_element *c, |
| 118 | const char *value) |
| 119 | { |
| 120 | fprintf_filtered (file, _("Resolution of opaque struct/class/union types " |
| 121 | "(if set before loading symbols) is %s.\n"), |
| 122 | value); |
| 123 | } |
| 124 | |
| 125 | int overload_debug = 0; |
| 126 | static void |
| 127 | show_overload_debug (struct ui_file *file, int from_tty, |
| 128 | struct cmd_list_element *c, const char *value) |
| 129 | { |
| 130 | fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"), |
| 131 | value); |
| 132 | } |
| 133 | |
| 134 | struct extra |
| 135 | { |
| 136 | char str[128]; |
| 137 | int len; |
| 138 | }; /* Maximum extension is 128! FIXME */ |
| 139 | |
| 140 | static void print_bit_vector (B_TYPE *, int); |
| 141 | static void print_arg_types (struct field *, int, int); |
| 142 | static void dump_fn_fieldlists (struct type *, int); |
| 143 | static void print_cplus_stuff (struct type *, int); |
| 144 | |
| 145 | |
| 146 | /* Allocate a new OBJFILE-associated type structure and fill it |
| 147 | with some defaults. Space for the type structure is allocated |
| 148 | on the objfile's objfile_obstack. */ |
| 149 | |
| 150 | struct type * |
| 151 | alloc_type (struct objfile *objfile) |
| 152 | { |
| 153 | struct type *type; |
| 154 | |
| 155 | gdb_assert (objfile != NULL); |
| 156 | |
| 157 | /* Alloc the structure and start off with all fields zeroed. */ |
| 158 | type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type); |
| 159 | TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
| 160 | struct main_type); |
| 161 | OBJSTAT (objfile, n_types++); |
| 162 | |
| 163 | TYPE_OBJFILE_OWNED (type) = 1; |
| 164 | TYPE_OWNER (type).objfile = objfile; |
| 165 | |
| 166 | /* Initialize the fields that might not be zero. */ |
| 167 | |
| 168 | TYPE_CODE (type) = TYPE_CODE_UNDEF; |
| 169 | TYPE_VPTR_FIELDNO (type) = -1; |
| 170 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
| 171 | |
| 172 | return type; |
| 173 | } |
| 174 | |
| 175 | /* Allocate a new GDBARCH-associated type structure and fill it |
| 176 | with some defaults. Space for the type structure is allocated |
| 177 | on the heap. */ |
| 178 | |
| 179 | struct type * |
| 180 | alloc_type_arch (struct gdbarch *gdbarch) |
| 181 | { |
| 182 | struct type *type; |
| 183 | |
| 184 | gdb_assert (gdbarch != NULL); |
| 185 | |
| 186 | /* Alloc the structure and start off with all fields zeroed. */ |
| 187 | |
| 188 | type = XZALLOC (struct type); |
| 189 | TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type); |
| 190 | |
| 191 | TYPE_OBJFILE_OWNED (type) = 0; |
| 192 | TYPE_OWNER (type).gdbarch = gdbarch; |
| 193 | |
| 194 | /* Initialize the fields that might not be zero. */ |
| 195 | |
| 196 | TYPE_CODE (type) = TYPE_CODE_UNDEF; |
| 197 | TYPE_VPTR_FIELDNO (type) = -1; |
| 198 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
| 199 | |
| 200 | return type; |
| 201 | } |
| 202 | |
| 203 | /* If TYPE is objfile-associated, allocate a new type structure |
| 204 | associated with the same objfile. If TYPE is gdbarch-associated, |
| 205 | allocate a new type structure associated with the same gdbarch. */ |
| 206 | |
| 207 | struct type * |
| 208 | alloc_type_copy (const struct type *type) |
| 209 | { |
| 210 | if (TYPE_OBJFILE_OWNED (type)) |
| 211 | return alloc_type (TYPE_OWNER (type).objfile); |
| 212 | else |
| 213 | return alloc_type_arch (TYPE_OWNER (type).gdbarch); |
| 214 | } |
| 215 | |
| 216 | /* If TYPE is gdbarch-associated, return that architecture. |
| 217 | If TYPE is objfile-associated, return that objfile's architecture. */ |
| 218 | |
| 219 | struct gdbarch * |
| 220 | get_type_arch (const struct type *type) |
| 221 | { |
| 222 | if (TYPE_OBJFILE_OWNED (type)) |
| 223 | return get_objfile_arch (TYPE_OWNER (type).objfile); |
| 224 | else |
| 225 | return TYPE_OWNER (type).gdbarch; |
| 226 | } |
| 227 | |
| 228 | |
| 229 | /* Alloc a new type instance structure, fill it with some defaults, |
| 230 | and point it at OLDTYPE. Allocate the new type instance from the |
| 231 | same place as OLDTYPE. */ |
| 232 | |
| 233 | static struct type * |
| 234 | alloc_type_instance (struct type *oldtype) |
| 235 | { |
| 236 | struct type *type; |
| 237 | |
| 238 | /* Allocate the structure. */ |
| 239 | |
| 240 | if (! TYPE_OBJFILE_OWNED (oldtype)) |
| 241 | type = XZALLOC (struct type); |
| 242 | else |
| 243 | type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack, |
| 244 | struct type); |
| 245 | |
| 246 | TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype); |
| 247 | |
| 248 | TYPE_CHAIN (type) = type; /* Chain back to itself for now. */ |
| 249 | |
| 250 | return type; |
| 251 | } |
| 252 | |
| 253 | /* Clear all remnants of the previous type at TYPE, in preparation for |
| 254 | replacing it with something else. Preserve owner information. */ |
| 255 | static void |
| 256 | smash_type (struct type *type) |
| 257 | { |
| 258 | int objfile_owned = TYPE_OBJFILE_OWNED (type); |
| 259 | union type_owner owner = TYPE_OWNER (type); |
| 260 | |
| 261 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); |
| 262 | |
| 263 | /* Restore owner information. */ |
| 264 | TYPE_OBJFILE_OWNED (type) = objfile_owned; |
| 265 | TYPE_OWNER (type) = owner; |
| 266 | |
| 267 | /* For now, delete the rings. */ |
| 268 | TYPE_CHAIN (type) = type; |
| 269 | |
| 270 | /* For now, leave the pointer/reference types alone. */ |
| 271 | } |
| 272 | |
| 273 | /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points |
| 274 | to a pointer to memory where the pointer type should be stored. |
| 275 | If *TYPEPTR is zero, update it to point to the pointer type we return. |
| 276 | We allocate new memory if needed. */ |
| 277 | |
| 278 | struct type * |
| 279 | make_pointer_type (struct type *type, struct type **typeptr) |
| 280 | { |
| 281 | struct type *ntype; /* New type */ |
| 282 | struct type *chain; |
| 283 | |
| 284 | ntype = TYPE_POINTER_TYPE (type); |
| 285 | |
| 286 | if (ntype) |
| 287 | { |
| 288 | if (typeptr == 0) |
| 289 | return ntype; /* Don't care about alloc, |
| 290 | and have new type. */ |
| 291 | else if (*typeptr == 0) |
| 292 | { |
| 293 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
| 294 | return ntype; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 299 | { |
| 300 | ntype = alloc_type_copy (type); |
| 301 | if (typeptr) |
| 302 | *typeptr = ntype; |
| 303 | } |
| 304 | else /* We have storage, but need to reset it. */ |
| 305 | { |
| 306 | ntype = *typeptr; |
| 307 | chain = TYPE_CHAIN (ntype); |
| 308 | smash_type (ntype); |
| 309 | TYPE_CHAIN (ntype) = chain; |
| 310 | } |
| 311 | |
| 312 | TYPE_TARGET_TYPE (ntype) = type; |
| 313 | TYPE_POINTER_TYPE (type) = ntype; |
| 314 | |
| 315 | /* FIXME! Assume the machine has only one representation for |
| 316 | pointers! */ |
| 317 | |
| 318 | TYPE_LENGTH (ntype) |
| 319 | = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; |
| 320 | TYPE_CODE (ntype) = TYPE_CODE_PTR; |
| 321 | |
| 322 | /* Mark pointers as unsigned. The target converts between pointers |
| 323 | and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and |
| 324 | gdbarch_address_to_pointer. */ |
| 325 | TYPE_UNSIGNED (ntype) = 1; |
| 326 | |
| 327 | if (!TYPE_POINTER_TYPE (type)) /* Remember it, if don't have one. */ |
| 328 | TYPE_POINTER_TYPE (type) = ntype; |
| 329 | |
| 330 | /* Update the length of all the other variants of this type. */ |
| 331 | chain = TYPE_CHAIN (ntype); |
| 332 | while (chain != ntype) |
| 333 | { |
| 334 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); |
| 335 | chain = TYPE_CHAIN (chain); |
| 336 | } |
| 337 | |
| 338 | return ntype; |
| 339 | } |
| 340 | |
| 341 | /* Given a type TYPE, return a type of pointers to that type. |
| 342 | May need to construct such a type if this is the first use. */ |
| 343 | |
| 344 | struct type * |
| 345 | lookup_pointer_type (struct type *type) |
| 346 | { |
| 347 | return make_pointer_type (type, (struct type **) 0); |
| 348 | } |
| 349 | |
| 350 | /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, |
| 351 | points to a pointer to memory where the reference type should be |
| 352 | stored. If *TYPEPTR is zero, update it to point to the reference |
| 353 | type we return. We allocate new memory if needed. */ |
| 354 | |
| 355 | struct type * |
| 356 | make_reference_type (struct type *type, struct type **typeptr) |
| 357 | { |
| 358 | struct type *ntype; /* New type */ |
| 359 | struct type *chain; |
| 360 | |
| 361 | ntype = TYPE_REFERENCE_TYPE (type); |
| 362 | |
| 363 | if (ntype) |
| 364 | { |
| 365 | if (typeptr == 0) |
| 366 | return ntype; /* Don't care about alloc, |
| 367 | and have new type. */ |
| 368 | else if (*typeptr == 0) |
| 369 | { |
| 370 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
| 371 | return ntype; |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 376 | { |
| 377 | ntype = alloc_type_copy (type); |
| 378 | if (typeptr) |
| 379 | *typeptr = ntype; |
| 380 | } |
| 381 | else /* We have storage, but need to reset it. */ |
| 382 | { |
| 383 | ntype = *typeptr; |
| 384 | chain = TYPE_CHAIN (ntype); |
| 385 | smash_type (ntype); |
| 386 | TYPE_CHAIN (ntype) = chain; |
| 387 | } |
| 388 | |
| 389 | TYPE_TARGET_TYPE (ntype) = type; |
| 390 | TYPE_REFERENCE_TYPE (type) = ntype; |
| 391 | |
| 392 | /* FIXME! Assume the machine has only one representation for |
| 393 | references, and that it matches the (only) representation for |
| 394 | pointers! */ |
| 395 | |
| 396 | TYPE_LENGTH (ntype) = |
| 397 | gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; |
| 398 | TYPE_CODE (ntype) = TYPE_CODE_REF; |
| 399 | |
| 400 | if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */ |
| 401 | TYPE_REFERENCE_TYPE (type) = ntype; |
| 402 | |
| 403 | /* Update the length of all the other variants of this type. */ |
| 404 | chain = TYPE_CHAIN (ntype); |
| 405 | while (chain != ntype) |
| 406 | { |
| 407 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); |
| 408 | chain = TYPE_CHAIN (chain); |
| 409 | } |
| 410 | |
| 411 | return ntype; |
| 412 | } |
| 413 | |
| 414 | /* Same as above, but caller doesn't care about memory allocation |
| 415 | details. */ |
| 416 | |
| 417 | struct type * |
| 418 | lookup_reference_type (struct type *type) |
| 419 | { |
| 420 | return make_reference_type (type, (struct type **) 0); |
| 421 | } |
| 422 | |
| 423 | /* Lookup a function type that returns type TYPE. TYPEPTR, if |
| 424 | nonzero, points to a pointer to memory where the function type |
| 425 | should be stored. If *TYPEPTR is zero, update it to point to the |
| 426 | function type we return. We allocate new memory if needed. */ |
| 427 | |
| 428 | struct type * |
| 429 | make_function_type (struct type *type, struct type **typeptr) |
| 430 | { |
| 431 | struct type *ntype; /* New type */ |
| 432 | |
| 433 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 434 | { |
| 435 | ntype = alloc_type_copy (type); |
| 436 | if (typeptr) |
| 437 | *typeptr = ntype; |
| 438 | } |
| 439 | else /* We have storage, but need to reset it. */ |
| 440 | { |
| 441 | ntype = *typeptr; |
| 442 | smash_type (ntype); |
| 443 | } |
| 444 | |
| 445 | TYPE_TARGET_TYPE (ntype) = type; |
| 446 | |
| 447 | TYPE_LENGTH (ntype) = 1; |
| 448 | TYPE_CODE (ntype) = TYPE_CODE_FUNC; |
| 449 | |
| 450 | INIT_FUNC_SPECIFIC (ntype); |
| 451 | |
| 452 | return ntype; |
| 453 | } |
| 454 | |
| 455 | |
| 456 | /* Given a type TYPE, return a type of functions that return that type. |
| 457 | May need to construct such a type if this is the first use. */ |
| 458 | |
| 459 | struct type * |
| 460 | lookup_function_type (struct type *type) |
| 461 | { |
| 462 | return make_function_type (type, (struct type **) 0); |
| 463 | } |
| 464 | |
| 465 | /* Identify address space identifier by name -- |
| 466 | return the integer flag defined in gdbtypes.h. */ |
| 467 | extern int |
| 468 | address_space_name_to_int (struct gdbarch *gdbarch, char *space_identifier) |
| 469 | { |
| 470 | int type_flags; |
| 471 | |
| 472 | /* Check for known address space delimiters. */ |
| 473 | if (!strcmp (space_identifier, "code")) |
| 474 | return TYPE_INSTANCE_FLAG_CODE_SPACE; |
| 475 | else if (!strcmp (space_identifier, "data")) |
| 476 | return TYPE_INSTANCE_FLAG_DATA_SPACE; |
| 477 | else if (gdbarch_address_class_name_to_type_flags_p (gdbarch) |
| 478 | && gdbarch_address_class_name_to_type_flags (gdbarch, |
| 479 | space_identifier, |
| 480 | &type_flags)) |
| 481 | return type_flags; |
| 482 | else |
| 483 | error (_("Unknown address space specifier: \"%s\""), space_identifier); |
| 484 | } |
| 485 | |
| 486 | /* Identify address space identifier by integer flag as defined in |
| 487 | gdbtypes.h -- return the string version of the adress space name. */ |
| 488 | |
| 489 | const char * |
| 490 | address_space_int_to_name (struct gdbarch *gdbarch, int space_flag) |
| 491 | { |
| 492 | if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE) |
| 493 | return "code"; |
| 494 | else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE) |
| 495 | return "data"; |
| 496 | else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
| 497 | && gdbarch_address_class_type_flags_to_name_p (gdbarch)) |
| 498 | return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag); |
| 499 | else |
| 500 | return NULL; |
| 501 | } |
| 502 | |
| 503 | /* Create a new type with instance flags NEW_FLAGS, based on TYPE. |
| 504 | |
| 505 | If STORAGE is non-NULL, create the new type instance there. |
| 506 | STORAGE must be in the same obstack as TYPE. */ |
| 507 | |
| 508 | static struct type * |
| 509 | make_qualified_type (struct type *type, int new_flags, |
| 510 | struct type *storage) |
| 511 | { |
| 512 | struct type *ntype; |
| 513 | |
| 514 | ntype = type; |
| 515 | do |
| 516 | { |
| 517 | if (TYPE_INSTANCE_FLAGS (ntype) == new_flags) |
| 518 | return ntype; |
| 519 | ntype = TYPE_CHAIN (ntype); |
| 520 | } |
| 521 | while (ntype != type); |
| 522 | |
| 523 | /* Create a new type instance. */ |
| 524 | if (storage == NULL) |
| 525 | ntype = alloc_type_instance (type); |
| 526 | else |
| 527 | { |
| 528 | /* If STORAGE was provided, it had better be in the same objfile |
| 529 | as TYPE. Otherwise, we can't link it into TYPE's cv chain: |
| 530 | if one objfile is freed and the other kept, we'd have |
| 531 | dangling pointers. */ |
| 532 | gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage)); |
| 533 | |
| 534 | ntype = storage; |
| 535 | TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type); |
| 536 | TYPE_CHAIN (ntype) = ntype; |
| 537 | } |
| 538 | |
| 539 | /* Pointers or references to the original type are not relevant to |
| 540 | the new type. */ |
| 541 | TYPE_POINTER_TYPE (ntype) = (struct type *) 0; |
| 542 | TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; |
| 543 | |
| 544 | /* Chain the new qualified type to the old type. */ |
| 545 | TYPE_CHAIN (ntype) = TYPE_CHAIN (type); |
| 546 | TYPE_CHAIN (type) = ntype; |
| 547 | |
| 548 | /* Now set the instance flags and return the new type. */ |
| 549 | TYPE_INSTANCE_FLAGS (ntype) = new_flags; |
| 550 | |
| 551 | /* Set length of new type to that of the original type. */ |
| 552 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); |
| 553 | |
| 554 | return ntype; |
| 555 | } |
| 556 | |
| 557 | /* Make an address-space-delimited variant of a type -- a type that |
| 558 | is identical to the one supplied except that it has an address |
| 559 | space attribute attached to it (such as "code" or "data"). |
| 560 | |
| 561 | The space attributes "code" and "data" are for Harvard |
| 562 | architectures. The address space attributes are for architectures |
| 563 | which have alternately sized pointers or pointers with alternate |
| 564 | representations. */ |
| 565 | |
| 566 | struct type * |
| 567 | make_type_with_address_space (struct type *type, int space_flag) |
| 568 | { |
| 569 | int new_flags = ((TYPE_INSTANCE_FLAGS (type) |
| 570 | & ~(TYPE_INSTANCE_FLAG_CODE_SPACE |
| 571 | | TYPE_INSTANCE_FLAG_DATA_SPACE |
| 572 | | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)) |
| 573 | | space_flag); |
| 574 | |
| 575 | return make_qualified_type (type, new_flags, NULL); |
| 576 | } |
| 577 | |
| 578 | /* Make a "c-v" variant of a type -- a type that is identical to the |
| 579 | one supplied except that it may have const or volatile attributes |
| 580 | CNST is a flag for setting the const attribute |
| 581 | VOLTL is a flag for setting the volatile attribute |
| 582 | TYPE is the base type whose variant we are creating. |
| 583 | |
| 584 | If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to |
| 585 | storage to hold the new qualified type; *TYPEPTR and TYPE must be |
| 586 | in the same objfile. Otherwise, allocate fresh memory for the new |
| 587 | type whereever TYPE lives. If TYPEPTR is non-zero, set it to the |
| 588 | new type we construct. */ |
| 589 | struct type * |
| 590 | make_cv_type (int cnst, int voltl, |
| 591 | struct type *type, |
| 592 | struct type **typeptr) |
| 593 | { |
| 594 | struct type *ntype; /* New type */ |
| 595 | |
| 596 | int new_flags = (TYPE_INSTANCE_FLAGS (type) |
| 597 | & ~(TYPE_INSTANCE_FLAG_CONST |
| 598 | | TYPE_INSTANCE_FLAG_VOLATILE)); |
| 599 | |
| 600 | if (cnst) |
| 601 | new_flags |= TYPE_INSTANCE_FLAG_CONST; |
| 602 | |
| 603 | if (voltl) |
| 604 | new_flags |= TYPE_INSTANCE_FLAG_VOLATILE; |
| 605 | |
| 606 | if (typeptr && *typeptr != NULL) |
| 607 | { |
| 608 | /* TYPE and *TYPEPTR must be in the same objfile. We can't have |
| 609 | a C-V variant chain that threads across objfiles: if one |
| 610 | objfile gets freed, then the other has a broken C-V chain. |
| 611 | |
| 612 | This code used to try to copy over the main type from TYPE to |
| 613 | *TYPEPTR if they were in different objfiles, but that's |
| 614 | wrong, too: TYPE may have a field list or member function |
| 615 | lists, which refer to types of their own, etc. etc. The |
| 616 | whole shebang would need to be copied over recursively; you |
| 617 | can't have inter-objfile pointers. The only thing to do is |
| 618 | to leave stub types as stub types, and look them up afresh by |
| 619 | name each time you encounter them. */ |
| 620 | gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type)); |
| 621 | } |
| 622 | |
| 623 | ntype = make_qualified_type (type, new_flags, |
| 624 | typeptr ? *typeptr : NULL); |
| 625 | |
| 626 | if (typeptr != NULL) |
| 627 | *typeptr = ntype; |
| 628 | |
| 629 | return ntype; |
| 630 | } |
| 631 | |
| 632 | /* Replace the contents of ntype with the type *type. This changes the |
| 633 | contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus |
| 634 | the changes are propogated to all types in the TYPE_CHAIN. |
| 635 | |
| 636 | In order to build recursive types, it's inevitable that we'll need |
| 637 | to update types in place --- but this sort of indiscriminate |
| 638 | smashing is ugly, and needs to be replaced with something more |
| 639 | controlled. TYPE_MAIN_TYPE is a step in this direction; it's not |
| 640 | clear if more steps are needed. */ |
| 641 | void |
| 642 | replace_type (struct type *ntype, struct type *type) |
| 643 | { |
| 644 | struct type *chain; |
| 645 | |
| 646 | /* These two types had better be in the same objfile. Otherwise, |
| 647 | the assignment of one type's main type structure to the other |
| 648 | will produce a type with references to objects (names; field |
| 649 | lists; etc.) allocated on an objfile other than its own. */ |
| 650 | gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype)); |
| 651 | |
| 652 | *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type); |
| 653 | |
| 654 | /* The type length is not a part of the main type. Update it for |
| 655 | each type on the variant chain. */ |
| 656 | chain = ntype; |
| 657 | do |
| 658 | { |
| 659 | /* Assert that this element of the chain has no address-class bits |
| 660 | set in its flags. Such type variants might have type lengths |
| 661 | which are supposed to be different from the non-address-class |
| 662 | variants. This assertion shouldn't ever be triggered because |
| 663 | symbol readers which do construct address-class variants don't |
| 664 | call replace_type(). */ |
| 665 | gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0); |
| 666 | |
| 667 | TYPE_LENGTH (chain) = TYPE_LENGTH (type); |
| 668 | chain = TYPE_CHAIN (chain); |
| 669 | } |
| 670 | while (ntype != chain); |
| 671 | |
| 672 | /* Assert that the two types have equivalent instance qualifiers. |
| 673 | This should be true for at least all of our debug readers. */ |
| 674 | gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type)); |
| 675 | } |
| 676 | |
| 677 | /* Implement direct support for MEMBER_TYPE in GNU C++. |
| 678 | May need to construct such a type if this is the first use. |
| 679 | The TYPE is the type of the member. The DOMAIN is the type |
| 680 | of the aggregate that the member belongs to. */ |
| 681 | |
| 682 | struct type * |
| 683 | lookup_memberptr_type (struct type *type, struct type *domain) |
| 684 | { |
| 685 | struct type *mtype; |
| 686 | |
| 687 | mtype = alloc_type_copy (type); |
| 688 | smash_to_memberptr_type (mtype, domain, type); |
| 689 | return mtype; |
| 690 | } |
| 691 | |
| 692 | /* Return a pointer-to-method type, for a method of type TO_TYPE. */ |
| 693 | |
| 694 | struct type * |
| 695 | lookup_methodptr_type (struct type *to_type) |
| 696 | { |
| 697 | struct type *mtype; |
| 698 | |
| 699 | mtype = alloc_type_copy (to_type); |
| 700 | smash_to_methodptr_type (mtype, to_type); |
| 701 | return mtype; |
| 702 | } |
| 703 | |
| 704 | /* Allocate a stub method whose return type is TYPE. This apparently |
| 705 | happens for speed of symbol reading, since parsing out the |
| 706 | arguments to the method is cpu-intensive, the way we are doing it. |
| 707 | So, we will fill in arguments later. This always returns a fresh |
| 708 | type. */ |
| 709 | |
| 710 | struct type * |
| 711 | allocate_stub_method (struct type *type) |
| 712 | { |
| 713 | struct type *mtype; |
| 714 | |
| 715 | mtype = alloc_type_copy (type); |
| 716 | TYPE_CODE (mtype) = TYPE_CODE_METHOD; |
| 717 | TYPE_LENGTH (mtype) = 1; |
| 718 | TYPE_STUB (mtype) = 1; |
| 719 | TYPE_TARGET_TYPE (mtype) = type; |
| 720 | /* _DOMAIN_TYPE (mtype) = unknown yet */ |
| 721 | return mtype; |
| 722 | } |
| 723 | |
| 724 | /* Create a range type using either a blank type supplied in |
| 725 | RESULT_TYPE, or creating a new type, inheriting the objfile from |
| 726 | INDEX_TYPE. |
| 727 | |
| 728 | Indices will be of type INDEX_TYPE, and will range from LOW_BOUND |
| 729 | to HIGH_BOUND, inclusive. |
| 730 | |
| 731 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 732 | sure it is TYPE_CODE_UNDEF before we bash it into a range type? */ |
| 733 | |
| 734 | struct type * |
| 735 | create_range_type (struct type *result_type, struct type *index_type, |
| 736 | LONGEST low_bound, LONGEST high_bound) |
| 737 | { |
| 738 | if (result_type == NULL) |
| 739 | result_type = alloc_type_copy (index_type); |
| 740 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; |
| 741 | TYPE_TARGET_TYPE (result_type) = index_type; |
| 742 | if (TYPE_STUB (index_type)) |
| 743 | TYPE_TARGET_STUB (result_type) = 1; |
| 744 | else |
| 745 | TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type)); |
| 746 | TYPE_RANGE_DATA (result_type) = (struct range_bounds *) |
| 747 | TYPE_ZALLOC (result_type, sizeof (struct range_bounds)); |
| 748 | TYPE_LOW_BOUND (result_type) = low_bound; |
| 749 | TYPE_HIGH_BOUND (result_type) = high_bound; |
| 750 | |
| 751 | if (low_bound >= 0) |
| 752 | TYPE_UNSIGNED (result_type) = 1; |
| 753 | |
| 754 | return result_type; |
| 755 | } |
| 756 | |
| 757 | /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type |
| 758 | TYPE. Return 1 if type is a range type, 0 if it is discrete (and |
| 759 | bounds will fit in LONGEST), or -1 otherwise. */ |
| 760 | |
| 761 | int |
| 762 | get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp) |
| 763 | { |
| 764 | CHECK_TYPEDEF (type); |
| 765 | switch (TYPE_CODE (type)) |
| 766 | { |
| 767 | case TYPE_CODE_RANGE: |
| 768 | *lowp = TYPE_LOW_BOUND (type); |
| 769 | *highp = TYPE_HIGH_BOUND (type); |
| 770 | return 1; |
| 771 | case TYPE_CODE_ENUM: |
| 772 | if (TYPE_NFIELDS (type) > 0) |
| 773 | { |
| 774 | /* The enums may not be sorted by value, so search all |
| 775 | entries. */ |
| 776 | int i; |
| 777 | |
| 778 | *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0); |
| 779 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
| 780 | { |
| 781 | if (TYPE_FIELD_ENUMVAL (type, i) < *lowp) |
| 782 | *lowp = TYPE_FIELD_ENUMVAL (type, i); |
| 783 | if (TYPE_FIELD_ENUMVAL (type, i) > *highp) |
| 784 | *highp = TYPE_FIELD_ENUMVAL (type, i); |
| 785 | } |
| 786 | |
| 787 | /* Set unsigned indicator if warranted. */ |
| 788 | if (*lowp >= 0) |
| 789 | { |
| 790 | TYPE_UNSIGNED (type) = 1; |
| 791 | } |
| 792 | } |
| 793 | else |
| 794 | { |
| 795 | *lowp = 0; |
| 796 | *highp = -1; |
| 797 | } |
| 798 | return 0; |
| 799 | case TYPE_CODE_BOOL: |
| 800 | *lowp = 0; |
| 801 | *highp = 1; |
| 802 | return 0; |
| 803 | case TYPE_CODE_INT: |
| 804 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */ |
| 805 | return -1; |
| 806 | if (!TYPE_UNSIGNED (type)) |
| 807 | { |
| 808 | *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1)); |
| 809 | *highp = -*lowp - 1; |
| 810 | return 0; |
| 811 | } |
| 812 | /* ... fall through for unsigned ints ... */ |
| 813 | case TYPE_CODE_CHAR: |
| 814 | *lowp = 0; |
| 815 | /* This round-about calculation is to avoid shifting by |
| 816 | TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work |
| 817 | if TYPE_LENGTH (type) == sizeof (LONGEST). */ |
| 818 | *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1); |
| 819 | *highp = (*highp - 1) | *highp; |
| 820 | return 0; |
| 821 | default: |
| 822 | return -1; |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | /* Assuming TYPE is a simple, non-empty array type, compute its upper |
| 827 | and lower bound. Save the low bound into LOW_BOUND if not NULL. |
| 828 | Save the high bound into HIGH_BOUND if not NULL. |
| 829 | |
| 830 | Return 1 if the operation was successful. Return zero otherwise, |
| 831 | in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. |
| 832 | |
| 833 | We now simply use get_discrete_bounds call to get the values |
| 834 | of the low and high bounds. |
| 835 | get_discrete_bounds can return three values: |
| 836 | 1, meaning that index is a range, |
| 837 | 0, meaning that index is a discrete type, |
| 838 | or -1 for failure. */ |
| 839 | |
| 840 | int |
| 841 | get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound) |
| 842 | { |
| 843 | struct type *index = TYPE_INDEX_TYPE (type); |
| 844 | LONGEST low = 0; |
| 845 | LONGEST high = 0; |
| 846 | int res; |
| 847 | |
| 848 | if (index == NULL) |
| 849 | return 0; |
| 850 | |
| 851 | res = get_discrete_bounds (index, &low, &high); |
| 852 | if (res == -1) |
| 853 | return 0; |
| 854 | |
| 855 | /* Check if the array bounds are undefined. */ |
| 856 | if (res == 1 |
| 857 | && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) |
| 858 | || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)))) |
| 859 | return 0; |
| 860 | |
| 861 | if (low_bound) |
| 862 | *low_bound = low; |
| 863 | |
| 864 | if (high_bound) |
| 865 | *high_bound = high; |
| 866 | |
| 867 | return 1; |
| 868 | } |
| 869 | |
| 870 | /* Create an array type using either a blank type supplied in |
| 871 | RESULT_TYPE, or creating a new type, inheriting the objfile from |
| 872 | RANGE_TYPE. |
| 873 | |
| 874 | Elements will be of type ELEMENT_TYPE, the indices will be of type |
| 875 | RANGE_TYPE. |
| 876 | |
| 877 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 878 | sure it is TYPE_CODE_UNDEF before we bash it into an array |
| 879 | type? */ |
| 880 | |
| 881 | struct type * |
| 882 | create_array_type (struct type *result_type, |
| 883 | struct type *element_type, |
| 884 | struct type *range_type) |
| 885 | { |
| 886 | LONGEST low_bound, high_bound; |
| 887 | |
| 888 | if (result_type == NULL) |
| 889 | result_type = alloc_type_copy (range_type); |
| 890 | |
| 891 | TYPE_CODE (result_type) = TYPE_CODE_ARRAY; |
| 892 | TYPE_TARGET_TYPE (result_type) = element_type; |
| 893 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) |
| 894 | low_bound = high_bound = 0; |
| 895 | CHECK_TYPEDEF (element_type); |
| 896 | /* Be careful when setting the array length. Ada arrays can be |
| 897 | empty arrays with the high_bound being smaller than the low_bound. |
| 898 | In such cases, the array length should be zero. */ |
| 899 | if (high_bound < low_bound) |
| 900 | TYPE_LENGTH (result_type) = 0; |
| 901 | else |
| 902 | TYPE_LENGTH (result_type) = |
| 903 | TYPE_LENGTH (element_type) * (high_bound - low_bound + 1); |
| 904 | TYPE_NFIELDS (result_type) = 1; |
| 905 | TYPE_FIELDS (result_type) = |
| 906 | (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); |
| 907 | TYPE_INDEX_TYPE (result_type) = range_type; |
| 908 | TYPE_VPTR_FIELDNO (result_type) = -1; |
| 909 | |
| 910 | /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays. */ |
| 911 | if (TYPE_LENGTH (result_type) == 0) |
| 912 | TYPE_TARGET_STUB (result_type) = 1; |
| 913 | |
| 914 | return result_type; |
| 915 | } |
| 916 | |
| 917 | struct type * |
| 918 | lookup_array_range_type (struct type *element_type, |
| 919 | int low_bound, int high_bound) |
| 920 | { |
| 921 | struct gdbarch *gdbarch = get_type_arch (element_type); |
| 922 | struct type *index_type = builtin_type (gdbarch)->builtin_int; |
| 923 | struct type *range_type |
| 924 | = create_range_type (NULL, index_type, low_bound, high_bound); |
| 925 | |
| 926 | return create_array_type (NULL, element_type, range_type); |
| 927 | } |
| 928 | |
| 929 | /* Create a string type using either a blank type supplied in |
| 930 | RESULT_TYPE, or creating a new type. String types are similar |
| 931 | enough to array of char types that we can use create_array_type to |
| 932 | build the basic type and then bash it into a string type. |
| 933 | |
| 934 | For fixed length strings, the range type contains 0 as the lower |
| 935 | bound and the length of the string minus one as the upper bound. |
| 936 | |
| 937 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 938 | sure it is TYPE_CODE_UNDEF before we bash it into a string |
| 939 | type? */ |
| 940 | |
| 941 | struct type * |
| 942 | create_string_type (struct type *result_type, |
| 943 | struct type *string_char_type, |
| 944 | struct type *range_type) |
| 945 | { |
| 946 | result_type = create_array_type (result_type, |
| 947 | string_char_type, |
| 948 | range_type); |
| 949 | TYPE_CODE (result_type) = TYPE_CODE_STRING; |
| 950 | return result_type; |
| 951 | } |
| 952 | |
| 953 | struct type * |
| 954 | lookup_string_range_type (struct type *string_char_type, |
| 955 | int low_bound, int high_bound) |
| 956 | { |
| 957 | struct type *result_type; |
| 958 | |
| 959 | result_type = lookup_array_range_type (string_char_type, |
| 960 | low_bound, high_bound); |
| 961 | TYPE_CODE (result_type) = TYPE_CODE_STRING; |
| 962 | return result_type; |
| 963 | } |
| 964 | |
| 965 | struct type * |
| 966 | create_set_type (struct type *result_type, struct type *domain_type) |
| 967 | { |
| 968 | if (result_type == NULL) |
| 969 | result_type = alloc_type_copy (domain_type); |
| 970 | |
| 971 | TYPE_CODE (result_type) = TYPE_CODE_SET; |
| 972 | TYPE_NFIELDS (result_type) = 1; |
| 973 | TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field)); |
| 974 | |
| 975 | if (!TYPE_STUB (domain_type)) |
| 976 | { |
| 977 | LONGEST low_bound, high_bound, bit_length; |
| 978 | |
| 979 | if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0) |
| 980 | low_bound = high_bound = 0; |
| 981 | bit_length = high_bound - low_bound + 1; |
| 982 | TYPE_LENGTH (result_type) |
| 983 | = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; |
| 984 | if (low_bound >= 0) |
| 985 | TYPE_UNSIGNED (result_type) = 1; |
| 986 | } |
| 987 | TYPE_FIELD_TYPE (result_type, 0) = domain_type; |
| 988 | |
| 989 | return result_type; |
| 990 | } |
| 991 | |
| 992 | /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE |
| 993 | and any array types nested inside it. */ |
| 994 | |
| 995 | void |
| 996 | make_vector_type (struct type *array_type) |
| 997 | { |
| 998 | struct type *inner_array, *elt_type; |
| 999 | int flags; |
| 1000 | |
| 1001 | /* Find the innermost array type, in case the array is |
| 1002 | multi-dimensional. */ |
| 1003 | inner_array = array_type; |
| 1004 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) |
| 1005 | inner_array = TYPE_TARGET_TYPE (inner_array); |
| 1006 | |
| 1007 | elt_type = TYPE_TARGET_TYPE (inner_array); |
| 1008 | if (TYPE_CODE (elt_type) == TYPE_CODE_INT) |
| 1009 | { |
| 1010 | flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT; |
| 1011 | elt_type = make_qualified_type (elt_type, flags, NULL); |
| 1012 | TYPE_TARGET_TYPE (inner_array) = elt_type; |
| 1013 | } |
| 1014 | |
| 1015 | TYPE_VECTOR (array_type) = 1; |
| 1016 | } |
| 1017 | |
| 1018 | struct type * |
| 1019 | init_vector_type (struct type *elt_type, int n) |
| 1020 | { |
| 1021 | struct type *array_type; |
| 1022 | |
| 1023 | array_type = lookup_array_range_type (elt_type, 0, n - 1); |
| 1024 | make_vector_type (array_type); |
| 1025 | return array_type; |
| 1026 | } |
| 1027 | |
| 1028 | /* Smash TYPE to be a type of pointers to members of DOMAIN with type |
| 1029 | TO_TYPE. A member pointer is a wierd thing -- it amounts to a |
| 1030 | typed offset into a struct, e.g. "an int at offset 8". A MEMBER |
| 1031 | TYPE doesn't include the offset (that's the value of the MEMBER |
| 1032 | itself), but does include the structure type into which it points |
| 1033 | (for some reason). |
| 1034 | |
| 1035 | When "smashing" the type, we preserve the objfile that the old type |
| 1036 | pointed to, since we aren't changing where the type is actually |
| 1037 | allocated. */ |
| 1038 | |
| 1039 | void |
| 1040 | smash_to_memberptr_type (struct type *type, struct type *domain, |
| 1041 | struct type *to_type) |
| 1042 | { |
| 1043 | smash_type (type); |
| 1044 | TYPE_TARGET_TYPE (type) = to_type; |
| 1045 | TYPE_DOMAIN_TYPE (type) = domain; |
| 1046 | /* Assume that a data member pointer is the same size as a normal |
| 1047 | pointer. */ |
| 1048 | TYPE_LENGTH (type) |
| 1049 | = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT; |
| 1050 | TYPE_CODE (type) = TYPE_CODE_MEMBERPTR; |
| 1051 | } |
| 1052 | |
| 1053 | /* Smash TYPE to be a type of pointer to methods type TO_TYPE. |
| 1054 | |
| 1055 | When "smashing" the type, we preserve the objfile that the old type |
| 1056 | pointed to, since we aren't changing where the type is actually |
| 1057 | allocated. */ |
| 1058 | |
| 1059 | void |
| 1060 | smash_to_methodptr_type (struct type *type, struct type *to_type) |
| 1061 | { |
| 1062 | smash_type (type); |
| 1063 | TYPE_TARGET_TYPE (type) = to_type; |
| 1064 | TYPE_DOMAIN_TYPE (type) = TYPE_DOMAIN_TYPE (to_type); |
| 1065 | TYPE_LENGTH (type) = cplus_method_ptr_size (to_type); |
| 1066 | TYPE_CODE (type) = TYPE_CODE_METHODPTR; |
| 1067 | } |
| 1068 | |
| 1069 | /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE. |
| 1070 | METHOD just means `function that gets an extra "this" argument'. |
| 1071 | |
| 1072 | When "smashing" the type, we preserve the objfile that the old type |
| 1073 | pointed to, since we aren't changing where the type is actually |
| 1074 | allocated. */ |
| 1075 | |
| 1076 | void |
| 1077 | smash_to_method_type (struct type *type, struct type *domain, |
| 1078 | struct type *to_type, struct field *args, |
| 1079 | int nargs, int varargs) |
| 1080 | { |
| 1081 | smash_type (type); |
| 1082 | TYPE_TARGET_TYPE (type) = to_type; |
| 1083 | TYPE_DOMAIN_TYPE (type) = domain; |
| 1084 | TYPE_FIELDS (type) = args; |
| 1085 | TYPE_NFIELDS (type) = nargs; |
| 1086 | if (varargs) |
| 1087 | TYPE_VARARGS (type) = 1; |
| 1088 | TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */ |
| 1089 | TYPE_CODE (type) = TYPE_CODE_METHOD; |
| 1090 | } |
| 1091 | |
| 1092 | /* Return a typename for a struct/union/enum type without "struct ", |
| 1093 | "union ", or "enum ". If the type has a NULL name, return NULL. */ |
| 1094 | |
| 1095 | const char * |
| 1096 | type_name_no_tag (const struct type *type) |
| 1097 | { |
| 1098 | if (TYPE_TAG_NAME (type) != NULL) |
| 1099 | return TYPE_TAG_NAME (type); |
| 1100 | |
| 1101 | /* Is there code which expects this to return the name if there is |
| 1102 | no tag name? My guess is that this is mainly used for C++ in |
| 1103 | cases where the two will always be the same. */ |
| 1104 | return TYPE_NAME (type); |
| 1105 | } |
| 1106 | |
| 1107 | /* A wrapper of type_name_no_tag which calls error if the type is anonymous. |
| 1108 | Since GCC PR debug/47510 DWARF provides associated information to detect the |
| 1109 | anonymous class linkage name from its typedef. |
| 1110 | |
| 1111 | Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will |
| 1112 | apply it itself. */ |
| 1113 | |
| 1114 | const char * |
| 1115 | type_name_no_tag_or_error (struct type *type) |
| 1116 | { |
| 1117 | struct type *saved_type = type; |
| 1118 | const char *name; |
| 1119 | struct objfile *objfile; |
| 1120 | |
| 1121 | CHECK_TYPEDEF (type); |
| 1122 | |
| 1123 | name = type_name_no_tag (type); |
| 1124 | if (name != NULL) |
| 1125 | return name; |
| 1126 | |
| 1127 | name = type_name_no_tag (saved_type); |
| 1128 | objfile = TYPE_OBJFILE (saved_type); |
| 1129 | error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"), |
| 1130 | name ? name : "<anonymous>", objfile ? objfile->name : "<arch>"); |
| 1131 | } |
| 1132 | |
| 1133 | /* Lookup a typedef or primitive type named NAME, visible in lexical |
| 1134 | block BLOCK. If NOERR is nonzero, return zero if NAME is not |
| 1135 | suitably defined. */ |
| 1136 | |
| 1137 | struct type * |
| 1138 | lookup_typename (const struct language_defn *language, |
| 1139 | struct gdbarch *gdbarch, const char *name, |
| 1140 | const struct block *block, int noerr) |
| 1141 | { |
| 1142 | struct symbol *sym; |
| 1143 | struct type *tmp; |
| 1144 | |
| 1145 | sym = lookup_symbol (name, block, VAR_DOMAIN, 0); |
| 1146 | if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF) |
| 1147 | { |
| 1148 | tmp = language_lookup_primitive_type_by_name (language, gdbarch, name); |
| 1149 | if (tmp) |
| 1150 | { |
| 1151 | return tmp; |
| 1152 | } |
| 1153 | else if (!tmp && noerr) |
| 1154 | { |
| 1155 | return NULL; |
| 1156 | } |
| 1157 | else |
| 1158 | { |
| 1159 | error (_("No type named %s."), name); |
| 1160 | } |
| 1161 | } |
| 1162 | return (SYMBOL_TYPE (sym)); |
| 1163 | } |
| 1164 | |
| 1165 | struct type * |
| 1166 | lookup_unsigned_typename (const struct language_defn *language, |
| 1167 | struct gdbarch *gdbarch, const char *name) |
| 1168 | { |
| 1169 | char *uns = alloca (strlen (name) + 10); |
| 1170 | |
| 1171 | strcpy (uns, "unsigned "); |
| 1172 | strcpy (uns + 9, name); |
| 1173 | return lookup_typename (language, gdbarch, uns, (struct block *) NULL, 0); |
| 1174 | } |
| 1175 | |
| 1176 | struct type * |
| 1177 | lookup_signed_typename (const struct language_defn *language, |
| 1178 | struct gdbarch *gdbarch, const char *name) |
| 1179 | { |
| 1180 | struct type *t; |
| 1181 | char *uns = alloca (strlen (name) + 8); |
| 1182 | |
| 1183 | strcpy (uns, "signed "); |
| 1184 | strcpy (uns + 7, name); |
| 1185 | t = lookup_typename (language, gdbarch, uns, (struct block *) NULL, 1); |
| 1186 | /* If we don't find "signed FOO" just try again with plain "FOO". */ |
| 1187 | if (t != NULL) |
| 1188 | return t; |
| 1189 | return lookup_typename (language, gdbarch, name, (struct block *) NULL, 0); |
| 1190 | } |
| 1191 | |
| 1192 | /* Lookup a structure type named "struct NAME", |
| 1193 | visible in lexical block BLOCK. */ |
| 1194 | |
| 1195 | struct type * |
| 1196 | lookup_struct (const char *name, struct block *block) |
| 1197 | { |
| 1198 | struct symbol *sym; |
| 1199 | |
| 1200 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
| 1201 | |
| 1202 | if (sym == NULL) |
| 1203 | { |
| 1204 | error (_("No struct type named %s."), name); |
| 1205 | } |
| 1206 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) |
| 1207 | { |
| 1208 | error (_("This context has class, union or enum %s, not a struct."), |
| 1209 | name); |
| 1210 | } |
| 1211 | return (SYMBOL_TYPE (sym)); |
| 1212 | } |
| 1213 | |
| 1214 | /* Lookup a union type named "union NAME", |
| 1215 | visible in lexical block BLOCK. */ |
| 1216 | |
| 1217 | struct type * |
| 1218 | lookup_union (const char *name, struct block *block) |
| 1219 | { |
| 1220 | struct symbol *sym; |
| 1221 | struct type *t; |
| 1222 | |
| 1223 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
| 1224 | |
| 1225 | if (sym == NULL) |
| 1226 | error (_("No union type named %s."), name); |
| 1227 | |
| 1228 | t = SYMBOL_TYPE (sym); |
| 1229 | |
| 1230 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
| 1231 | return t; |
| 1232 | |
| 1233 | /* If we get here, it's not a union. */ |
| 1234 | error (_("This context has class, struct or enum %s, not a union."), |
| 1235 | name); |
| 1236 | } |
| 1237 | |
| 1238 | |
| 1239 | /* Lookup an enum type named "enum NAME", |
| 1240 | visible in lexical block BLOCK. */ |
| 1241 | |
| 1242 | struct type * |
| 1243 | lookup_enum (const char *name, struct block *block) |
| 1244 | { |
| 1245 | struct symbol *sym; |
| 1246 | |
| 1247 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
| 1248 | if (sym == NULL) |
| 1249 | { |
| 1250 | error (_("No enum type named %s."), name); |
| 1251 | } |
| 1252 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM) |
| 1253 | { |
| 1254 | error (_("This context has class, struct or union %s, not an enum."), |
| 1255 | name); |
| 1256 | } |
| 1257 | return (SYMBOL_TYPE (sym)); |
| 1258 | } |
| 1259 | |
| 1260 | /* Lookup a template type named "template NAME<TYPE>", |
| 1261 | visible in lexical block BLOCK. */ |
| 1262 | |
| 1263 | struct type * |
| 1264 | lookup_template_type (char *name, struct type *type, |
| 1265 | struct block *block) |
| 1266 | { |
| 1267 | struct symbol *sym; |
| 1268 | char *nam = (char *) |
| 1269 | alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4); |
| 1270 | |
| 1271 | strcpy (nam, name); |
| 1272 | strcat (nam, "<"); |
| 1273 | strcat (nam, TYPE_NAME (type)); |
| 1274 | strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */ |
| 1275 | |
| 1276 | sym = lookup_symbol (nam, block, VAR_DOMAIN, 0); |
| 1277 | |
| 1278 | if (sym == NULL) |
| 1279 | { |
| 1280 | error (_("No template type named %s."), name); |
| 1281 | } |
| 1282 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) |
| 1283 | { |
| 1284 | error (_("This context has class, union or enum %s, not a struct."), |
| 1285 | name); |
| 1286 | } |
| 1287 | return (SYMBOL_TYPE (sym)); |
| 1288 | } |
| 1289 | |
| 1290 | /* Given a type TYPE, lookup the type of the component of type named |
| 1291 | NAME. |
| 1292 | |
| 1293 | TYPE can be either a struct or union, or a pointer or reference to |
| 1294 | a struct or union. If it is a pointer or reference, its target |
| 1295 | type is automatically used. Thus '.' and '->' are interchangable, |
| 1296 | as specified for the definitions of the expression element types |
| 1297 | STRUCTOP_STRUCT and STRUCTOP_PTR. |
| 1298 | |
| 1299 | If NOERR is nonzero, return zero if NAME is not suitably defined. |
| 1300 | If NAME is the name of a baseclass type, return that type. */ |
| 1301 | |
| 1302 | struct type * |
| 1303 | lookup_struct_elt_type (struct type *type, char *name, int noerr) |
| 1304 | { |
| 1305 | int i; |
| 1306 | char *typename; |
| 1307 | |
| 1308 | for (;;) |
| 1309 | { |
| 1310 | CHECK_TYPEDEF (type); |
| 1311 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
| 1312 | && TYPE_CODE (type) != TYPE_CODE_REF) |
| 1313 | break; |
| 1314 | type = TYPE_TARGET_TYPE (type); |
| 1315 | } |
| 1316 | |
| 1317 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
| 1318 | && TYPE_CODE (type) != TYPE_CODE_UNION) |
| 1319 | { |
| 1320 | typename = type_to_string (type); |
| 1321 | make_cleanup (xfree, typename); |
| 1322 | error (_("Type %s is not a structure or union type."), typename); |
| 1323 | } |
| 1324 | |
| 1325 | #if 0 |
| 1326 | /* FIXME: This change put in by Michael seems incorrect for the case |
| 1327 | where the structure tag name is the same as the member name. |
| 1328 | I.e. when doing "ptype bell->bar" for "struct foo { int bar; int |
| 1329 | foo; } bell;" Disabled by fnf. */ |
| 1330 | { |
| 1331 | char *typename; |
| 1332 | |
| 1333 | typename = type_name_no_tag (type); |
| 1334 | if (typename != NULL && strcmp (typename, name) == 0) |
| 1335 | return type; |
| 1336 | } |
| 1337 | #endif |
| 1338 | |
| 1339 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) |
| 1340 | { |
| 1341 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
| 1342 | |
| 1343 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) |
| 1344 | { |
| 1345 | return TYPE_FIELD_TYPE (type, i); |
| 1346 | } |
| 1347 | else if (!t_field_name || *t_field_name == '\0') |
| 1348 | { |
| 1349 | struct type *subtype |
| 1350 | = lookup_struct_elt_type (TYPE_FIELD_TYPE (type, i), name, 1); |
| 1351 | |
| 1352 | if (subtype != NULL) |
| 1353 | return subtype; |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | /* OK, it's not in this class. Recursively check the baseclasses. */ |
| 1358 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) |
| 1359 | { |
| 1360 | struct type *t; |
| 1361 | |
| 1362 | t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1); |
| 1363 | if (t != NULL) |
| 1364 | { |
| 1365 | return t; |
| 1366 | } |
| 1367 | } |
| 1368 | |
| 1369 | if (noerr) |
| 1370 | { |
| 1371 | return NULL; |
| 1372 | } |
| 1373 | |
| 1374 | typename = type_to_string (type); |
| 1375 | make_cleanup (xfree, typename); |
| 1376 | error (_("Type %s has no component named %s."), typename, name); |
| 1377 | } |
| 1378 | |
| 1379 | /* Lookup the vptr basetype/fieldno values for TYPE. |
| 1380 | If found store vptr_basetype in *BASETYPEP if non-NULL, and return |
| 1381 | vptr_fieldno. Also, if found and basetype is from the same objfile, |
| 1382 | cache the results. |
| 1383 | If not found, return -1 and ignore BASETYPEP. |
| 1384 | Callers should be aware that in some cases (for example, |
| 1385 | the type or one of its baseclasses is a stub type and we are |
| 1386 | debugging a .o file, or the compiler uses DWARF-2 and is not GCC), |
| 1387 | this function will not be able to find the |
| 1388 | virtual function table pointer, and vptr_fieldno will remain -1 and |
| 1389 | vptr_basetype will remain NULL or incomplete. */ |
| 1390 | |
| 1391 | int |
| 1392 | get_vptr_fieldno (struct type *type, struct type **basetypep) |
| 1393 | { |
| 1394 | CHECK_TYPEDEF (type); |
| 1395 | |
| 1396 | if (TYPE_VPTR_FIELDNO (type) < 0) |
| 1397 | { |
| 1398 | int i; |
| 1399 | |
| 1400 | /* We must start at zero in case the first (and only) baseclass |
| 1401 | is virtual (and hence we cannot share the table pointer). */ |
| 1402 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
| 1403 | { |
| 1404 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
| 1405 | int fieldno; |
| 1406 | struct type *basetype; |
| 1407 | |
| 1408 | fieldno = get_vptr_fieldno (baseclass, &basetype); |
| 1409 | if (fieldno >= 0) |
| 1410 | { |
| 1411 | /* If the type comes from a different objfile we can't cache |
| 1412 | it, it may have a different lifetime. PR 2384 */ |
| 1413 | if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype)) |
| 1414 | { |
| 1415 | TYPE_VPTR_FIELDNO (type) = fieldno; |
| 1416 | TYPE_VPTR_BASETYPE (type) = basetype; |
| 1417 | } |
| 1418 | if (basetypep) |
| 1419 | *basetypep = basetype; |
| 1420 | return fieldno; |
| 1421 | } |
| 1422 | } |
| 1423 | |
| 1424 | /* Not found. */ |
| 1425 | return -1; |
| 1426 | } |
| 1427 | else |
| 1428 | { |
| 1429 | if (basetypep) |
| 1430 | *basetypep = TYPE_VPTR_BASETYPE (type); |
| 1431 | return TYPE_VPTR_FIELDNO (type); |
| 1432 | } |
| 1433 | } |
| 1434 | |
| 1435 | static void |
| 1436 | stub_noname_complaint (void) |
| 1437 | { |
| 1438 | complaint (&symfile_complaints, _("stub type has NULL name")); |
| 1439 | } |
| 1440 | |
| 1441 | /* Find the real type of TYPE. This function returns the real type, |
| 1442 | after removing all layers of typedefs, and completing opaque or stub |
| 1443 | types. Completion changes the TYPE argument, but stripping of |
| 1444 | typedefs does not. |
| 1445 | |
| 1446 | Instance flags (e.g. const/volatile) are preserved as typedefs are |
| 1447 | stripped. If necessary a new qualified form of the underlying type |
| 1448 | is created. |
| 1449 | |
| 1450 | NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has |
| 1451 | not been computed and we're either in the middle of reading symbols, or |
| 1452 | there was no name for the typedef in the debug info. |
| 1453 | |
| 1454 | NOTE: Lookup of opaque types can throw errors for invalid symbol files. |
| 1455 | QUITs in the symbol reading code can also throw. |
| 1456 | Thus this function can throw an exception. |
| 1457 | |
| 1458 | If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of |
| 1459 | the target type. |
| 1460 | |
| 1461 | If this is a stubbed struct (i.e. declared as struct foo *), see if |
| 1462 | we can find a full definition in some other file. If so, copy this |
| 1463 | definition, so we can use it in future. There used to be a comment |
| 1464 | (but not any code) that if we don't find a full definition, we'd |
| 1465 | set a flag so we don't spend time in the future checking the same |
| 1466 | type. That would be a mistake, though--we might load in more |
| 1467 | symbols which contain a full definition for the type. */ |
| 1468 | |
| 1469 | struct type * |
| 1470 | check_typedef (struct type *type) |
| 1471 | { |
| 1472 | struct type *orig_type = type; |
| 1473 | /* While we're removing typedefs, we don't want to lose qualifiers. |
| 1474 | E.g., const/volatile. */ |
| 1475 | int instance_flags = TYPE_INSTANCE_FLAGS (type); |
| 1476 | |
| 1477 | gdb_assert (type); |
| 1478 | |
| 1479 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
| 1480 | { |
| 1481 | if (!TYPE_TARGET_TYPE (type)) |
| 1482 | { |
| 1483 | const char *name; |
| 1484 | struct symbol *sym; |
| 1485 | |
| 1486 | /* It is dangerous to call lookup_symbol if we are currently |
| 1487 | reading a symtab. Infinite recursion is one danger. */ |
| 1488 | if (currently_reading_symtab) |
| 1489 | return make_qualified_type (type, instance_flags, NULL); |
| 1490 | |
| 1491 | name = type_name_no_tag (type); |
| 1492 | /* FIXME: shouldn't we separately check the TYPE_NAME and |
| 1493 | the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or |
| 1494 | VAR_DOMAIN as appropriate? (this code was written before |
| 1495 | TYPE_NAME and TYPE_TAG_NAME were separate). */ |
| 1496 | if (name == NULL) |
| 1497 | { |
| 1498 | stub_noname_complaint (); |
| 1499 | return make_qualified_type (type, instance_flags, NULL); |
| 1500 | } |
| 1501 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0); |
| 1502 | if (sym) |
| 1503 | TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym); |
| 1504 | else /* TYPE_CODE_UNDEF */ |
| 1505 | TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type)); |
| 1506 | } |
| 1507 | type = TYPE_TARGET_TYPE (type); |
| 1508 | |
| 1509 | /* Preserve the instance flags as we traverse down the typedef chain. |
| 1510 | |
| 1511 | Handling address spaces/classes is nasty, what do we do if there's a |
| 1512 | conflict? |
| 1513 | E.g., what if an outer typedef marks the type as class_1 and an inner |
| 1514 | typedef marks the type as class_2? |
| 1515 | This is the wrong place to do such error checking. We leave it to |
| 1516 | the code that created the typedef in the first place to flag the |
| 1517 | error. We just pick the outer address space (akin to letting the |
| 1518 | outer cast in a chain of casting win), instead of assuming |
| 1519 | "it can't happen". */ |
| 1520 | { |
| 1521 | const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE |
| 1522 | | TYPE_INSTANCE_FLAG_DATA_SPACE); |
| 1523 | const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL; |
| 1524 | int new_instance_flags = TYPE_INSTANCE_FLAGS (type); |
| 1525 | |
| 1526 | /* Treat code vs data spaces and address classes separately. */ |
| 1527 | if ((instance_flags & ALL_SPACES) != 0) |
| 1528 | new_instance_flags &= ~ALL_SPACES; |
| 1529 | if ((instance_flags & ALL_CLASSES) != 0) |
| 1530 | new_instance_flags &= ~ALL_CLASSES; |
| 1531 | |
| 1532 | instance_flags |= new_instance_flags; |
| 1533 | } |
| 1534 | } |
| 1535 | |
| 1536 | /* If this is a struct/class/union with no fields, then check |
| 1537 | whether a full definition exists somewhere else. This is for |
| 1538 | systems where a type definition with no fields is issued for such |
| 1539 | types, instead of identifying them as stub types in the first |
| 1540 | place. */ |
| 1541 | |
| 1542 | if (TYPE_IS_OPAQUE (type) |
| 1543 | && opaque_type_resolution |
| 1544 | && !currently_reading_symtab) |
| 1545 | { |
| 1546 | const char *name = type_name_no_tag (type); |
| 1547 | struct type *newtype; |
| 1548 | |
| 1549 | if (name == NULL) |
| 1550 | { |
| 1551 | stub_noname_complaint (); |
| 1552 | return make_qualified_type (type, instance_flags, NULL); |
| 1553 | } |
| 1554 | newtype = lookup_transparent_type (name); |
| 1555 | |
| 1556 | if (newtype) |
| 1557 | { |
| 1558 | /* If the resolved type and the stub are in the same |
| 1559 | objfile, then replace the stub type with the real deal. |
| 1560 | But if they're in separate objfiles, leave the stub |
| 1561 | alone; we'll just look up the transparent type every time |
| 1562 | we call check_typedef. We can't create pointers between |
| 1563 | types allocated to different objfiles, since they may |
| 1564 | have different lifetimes. Trying to copy NEWTYPE over to |
| 1565 | TYPE's objfile is pointless, too, since you'll have to |
| 1566 | move over any other types NEWTYPE refers to, which could |
| 1567 | be an unbounded amount of stuff. */ |
| 1568 | if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type)) |
| 1569 | type = make_qualified_type (newtype, |
| 1570 | TYPE_INSTANCE_FLAGS (type), |
| 1571 | type); |
| 1572 | else |
| 1573 | type = newtype; |
| 1574 | } |
| 1575 | } |
| 1576 | /* Otherwise, rely on the stub flag being set for opaque/stubbed |
| 1577 | types. */ |
| 1578 | else if (TYPE_STUB (type) && !currently_reading_symtab) |
| 1579 | { |
| 1580 | const char *name = type_name_no_tag (type); |
| 1581 | /* FIXME: shouldn't we separately check the TYPE_NAME and the |
| 1582 | TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN |
| 1583 | as appropriate? (this code was written before TYPE_NAME and |
| 1584 | TYPE_TAG_NAME were separate). */ |
| 1585 | struct symbol *sym; |
| 1586 | |
| 1587 | if (name == NULL) |
| 1588 | { |
| 1589 | stub_noname_complaint (); |
| 1590 | return make_qualified_type (type, instance_flags, NULL); |
| 1591 | } |
| 1592 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0); |
| 1593 | if (sym) |
| 1594 | { |
| 1595 | /* Same as above for opaque types, we can replace the stub |
| 1596 | with the complete type only if they are in the same |
| 1597 | objfile. */ |
| 1598 | if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type)) |
| 1599 | type = make_qualified_type (SYMBOL_TYPE (sym), |
| 1600 | TYPE_INSTANCE_FLAGS (type), |
| 1601 | type); |
| 1602 | else |
| 1603 | type = SYMBOL_TYPE (sym); |
| 1604 | } |
| 1605 | } |
| 1606 | |
| 1607 | if (TYPE_TARGET_STUB (type)) |
| 1608 | { |
| 1609 | struct type *range_type; |
| 1610 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); |
| 1611 | |
| 1612 | if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type)) |
| 1613 | { |
| 1614 | /* Nothing we can do. */ |
| 1615 | } |
| 1616 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY |
| 1617 | && TYPE_NFIELDS (type) == 1 |
| 1618 | && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type)) |
| 1619 | == TYPE_CODE_RANGE)) |
| 1620 | { |
| 1621 | /* Now recompute the length of the array type, based on its |
| 1622 | number of elements and the target type's length. |
| 1623 | Watch out for Ada null Ada arrays where the high bound |
| 1624 | is smaller than the low bound. */ |
| 1625 | const LONGEST low_bound = TYPE_LOW_BOUND (range_type); |
| 1626 | const LONGEST high_bound = TYPE_HIGH_BOUND (range_type); |
| 1627 | ULONGEST len; |
| 1628 | |
| 1629 | if (high_bound < low_bound) |
| 1630 | len = 0; |
| 1631 | else |
| 1632 | { |
| 1633 | /* For now, we conservatively take the array length to be 0 |
| 1634 | if its length exceeds UINT_MAX. The code below assumes |
| 1635 | that for x < 0, (ULONGEST) x == -x + ULONGEST_MAX + 1, |
| 1636 | which is technically not guaranteed by C, but is usually true |
| 1637 | (because it would be true if x were unsigned with its |
| 1638 | high-order bit on). It uses the fact that |
| 1639 | high_bound-low_bound is always representable in |
| 1640 | ULONGEST and that if high_bound-low_bound+1 overflows, |
| 1641 | it overflows to 0. We must change these tests if we |
| 1642 | decide to increase the representation of TYPE_LENGTH |
| 1643 | from unsigned int to ULONGEST. */ |
| 1644 | ULONGEST ulow = low_bound, uhigh = high_bound; |
| 1645 | ULONGEST tlen = TYPE_LENGTH (target_type); |
| 1646 | |
| 1647 | len = tlen * (uhigh - ulow + 1); |
| 1648 | if (tlen == 0 || (len / tlen - 1 + ulow) != uhigh |
| 1649 | || len > UINT_MAX) |
| 1650 | len = 0; |
| 1651 | } |
| 1652 | TYPE_LENGTH (type) = len; |
| 1653 | TYPE_TARGET_STUB (type) = 0; |
| 1654 | } |
| 1655 | else if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| 1656 | { |
| 1657 | TYPE_LENGTH (type) = TYPE_LENGTH (target_type); |
| 1658 | TYPE_TARGET_STUB (type) = 0; |
| 1659 | } |
| 1660 | } |
| 1661 | |
| 1662 | type = make_qualified_type (type, instance_flags, NULL); |
| 1663 | |
| 1664 | /* Cache TYPE_LENGTH for future use. */ |
| 1665 | TYPE_LENGTH (orig_type) = TYPE_LENGTH (type); |
| 1666 | |
| 1667 | return type; |
| 1668 | } |
| 1669 | |
| 1670 | /* Parse a type expression in the string [P..P+LENGTH). If an error |
| 1671 | occurs, silently return a void type. */ |
| 1672 | |
| 1673 | static struct type * |
| 1674 | safe_parse_type (struct gdbarch *gdbarch, char *p, int length) |
| 1675 | { |
| 1676 | struct ui_file *saved_gdb_stderr; |
| 1677 | struct type *type = NULL; /* Initialize to keep gcc happy. */ |
| 1678 | volatile struct gdb_exception except; |
| 1679 | |
| 1680 | /* Suppress error messages. */ |
| 1681 | saved_gdb_stderr = gdb_stderr; |
| 1682 | gdb_stderr = ui_file_new (); |
| 1683 | |
| 1684 | /* Call parse_and_eval_type() without fear of longjmp()s. */ |
| 1685 | TRY_CATCH (except, RETURN_MASK_ERROR) |
| 1686 | { |
| 1687 | type = parse_and_eval_type (p, length); |
| 1688 | } |
| 1689 | |
| 1690 | if (except.reason < 0) |
| 1691 | type = builtin_type (gdbarch)->builtin_void; |
| 1692 | |
| 1693 | /* Stop suppressing error messages. */ |
| 1694 | ui_file_delete (gdb_stderr); |
| 1695 | gdb_stderr = saved_gdb_stderr; |
| 1696 | |
| 1697 | return type; |
| 1698 | } |
| 1699 | |
| 1700 | /* Ugly hack to convert method stubs into method types. |
| 1701 | |
| 1702 | He ain't kiddin'. This demangles the name of the method into a |
| 1703 | string including argument types, parses out each argument type, |
| 1704 | generates a string casting a zero to that type, evaluates the |
| 1705 | string, and stuffs the resulting type into an argtype vector!!! |
| 1706 | Then it knows the type of the whole function (including argument |
| 1707 | types for overloading), which info used to be in the stab's but was |
| 1708 | removed to hack back the space required for them. */ |
| 1709 | |
| 1710 | static void |
| 1711 | check_stub_method (struct type *type, int method_id, int signature_id) |
| 1712 | { |
| 1713 | struct gdbarch *gdbarch = get_type_arch (type); |
| 1714 | struct fn_field *f; |
| 1715 | char *mangled_name = gdb_mangle_name (type, method_id, signature_id); |
| 1716 | char *demangled_name = cplus_demangle (mangled_name, |
| 1717 | DMGL_PARAMS | DMGL_ANSI); |
| 1718 | char *argtypetext, *p; |
| 1719 | int depth = 0, argcount = 1; |
| 1720 | struct field *argtypes; |
| 1721 | struct type *mtype; |
| 1722 | |
| 1723 | /* Make sure we got back a function string that we can use. */ |
| 1724 | if (demangled_name) |
| 1725 | p = strchr (demangled_name, '('); |
| 1726 | else |
| 1727 | p = NULL; |
| 1728 | |
| 1729 | if (demangled_name == NULL || p == NULL) |
| 1730 | error (_("Internal: Cannot demangle mangled name `%s'."), |
| 1731 | mangled_name); |
| 1732 | |
| 1733 | /* Now, read in the parameters that define this type. */ |
| 1734 | p += 1; |
| 1735 | argtypetext = p; |
| 1736 | while (*p) |
| 1737 | { |
| 1738 | if (*p == '(' || *p == '<') |
| 1739 | { |
| 1740 | depth += 1; |
| 1741 | } |
| 1742 | else if (*p == ')' || *p == '>') |
| 1743 | { |
| 1744 | depth -= 1; |
| 1745 | } |
| 1746 | else if (*p == ',' && depth == 0) |
| 1747 | { |
| 1748 | argcount += 1; |
| 1749 | } |
| 1750 | |
| 1751 | p += 1; |
| 1752 | } |
| 1753 | |
| 1754 | /* If we read one argument and it was ``void'', don't count it. */ |
| 1755 | if (strncmp (argtypetext, "(void)", 6) == 0) |
| 1756 | argcount -= 1; |
| 1757 | |
| 1758 | /* We need one extra slot, for the THIS pointer. */ |
| 1759 | |
| 1760 | argtypes = (struct field *) |
| 1761 | TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field)); |
| 1762 | p = argtypetext; |
| 1763 | |
| 1764 | /* Add THIS pointer for non-static methods. */ |
| 1765 | f = TYPE_FN_FIELDLIST1 (type, method_id); |
| 1766 | if (TYPE_FN_FIELD_STATIC_P (f, signature_id)) |
| 1767 | argcount = 0; |
| 1768 | else |
| 1769 | { |
| 1770 | argtypes[0].type = lookup_pointer_type (type); |
| 1771 | argcount = 1; |
| 1772 | } |
| 1773 | |
| 1774 | if (*p != ')') /* () means no args, skip while. */ |
| 1775 | { |
| 1776 | depth = 0; |
| 1777 | while (*p) |
| 1778 | { |
| 1779 | if (depth <= 0 && (*p == ',' || *p == ')')) |
| 1780 | { |
| 1781 | /* Avoid parsing of ellipsis, they will be handled below. |
| 1782 | Also avoid ``void'' as above. */ |
| 1783 | if (strncmp (argtypetext, "...", p - argtypetext) != 0 |
| 1784 | && strncmp (argtypetext, "void", p - argtypetext) != 0) |
| 1785 | { |
| 1786 | argtypes[argcount].type = |
| 1787 | safe_parse_type (gdbarch, argtypetext, p - argtypetext); |
| 1788 | argcount += 1; |
| 1789 | } |
| 1790 | argtypetext = p + 1; |
| 1791 | } |
| 1792 | |
| 1793 | if (*p == '(' || *p == '<') |
| 1794 | { |
| 1795 | depth += 1; |
| 1796 | } |
| 1797 | else if (*p == ')' || *p == '>') |
| 1798 | { |
| 1799 | depth -= 1; |
| 1800 | } |
| 1801 | |
| 1802 | p += 1; |
| 1803 | } |
| 1804 | } |
| 1805 | |
| 1806 | TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name; |
| 1807 | |
| 1808 | /* Now update the old "stub" type into a real type. */ |
| 1809 | mtype = TYPE_FN_FIELD_TYPE (f, signature_id); |
| 1810 | TYPE_DOMAIN_TYPE (mtype) = type; |
| 1811 | TYPE_FIELDS (mtype) = argtypes; |
| 1812 | TYPE_NFIELDS (mtype) = argcount; |
| 1813 | TYPE_STUB (mtype) = 0; |
| 1814 | TYPE_FN_FIELD_STUB (f, signature_id) = 0; |
| 1815 | if (p[-2] == '.') |
| 1816 | TYPE_VARARGS (mtype) = 1; |
| 1817 | |
| 1818 | xfree (demangled_name); |
| 1819 | } |
| 1820 | |
| 1821 | /* This is the external interface to check_stub_method, above. This |
| 1822 | function unstubs all of the signatures for TYPE's METHOD_ID method |
| 1823 | name. After calling this function TYPE_FN_FIELD_STUB will be |
| 1824 | cleared for each signature and TYPE_FN_FIELDLIST_NAME will be |
| 1825 | correct. |
| 1826 | |
| 1827 | This function unfortunately can not die until stabs do. */ |
| 1828 | |
| 1829 | void |
| 1830 | check_stub_method_group (struct type *type, int method_id) |
| 1831 | { |
| 1832 | int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id); |
| 1833 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); |
| 1834 | int j, found_stub = 0; |
| 1835 | |
| 1836 | for (j = 0; j < len; j++) |
| 1837 | if (TYPE_FN_FIELD_STUB (f, j)) |
| 1838 | { |
| 1839 | found_stub = 1; |
| 1840 | check_stub_method (type, method_id, j); |
| 1841 | } |
| 1842 | |
| 1843 | /* GNU v3 methods with incorrect names were corrected when we read |
| 1844 | in type information, because it was cheaper to do it then. The |
| 1845 | only GNU v2 methods with incorrect method names are operators and |
| 1846 | destructors; destructors were also corrected when we read in type |
| 1847 | information. |
| 1848 | |
| 1849 | Therefore the only thing we need to handle here are v2 operator |
| 1850 | names. */ |
| 1851 | if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0) |
| 1852 | { |
| 1853 | int ret; |
| 1854 | char dem_opname[256]; |
| 1855 | |
| 1856 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, |
| 1857 | method_id), |
| 1858 | dem_opname, DMGL_ANSI); |
| 1859 | if (!ret) |
| 1860 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, |
| 1861 | method_id), |
| 1862 | dem_opname, 0); |
| 1863 | if (ret) |
| 1864 | TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname); |
| 1865 | } |
| 1866 | } |
| 1867 | |
| 1868 | /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */ |
| 1869 | const struct cplus_struct_type cplus_struct_default = { }; |
| 1870 | |
| 1871 | void |
| 1872 | allocate_cplus_struct_type (struct type *type) |
| 1873 | { |
| 1874 | if (HAVE_CPLUS_STRUCT (type)) |
| 1875 | /* Structure was already allocated. Nothing more to do. */ |
| 1876 | return; |
| 1877 | |
| 1878 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF; |
| 1879 | TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *) |
| 1880 | TYPE_ALLOC (type, sizeof (struct cplus_struct_type)); |
| 1881 | *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default; |
| 1882 | } |
| 1883 | |
| 1884 | const struct gnat_aux_type gnat_aux_default = |
| 1885 | { NULL }; |
| 1886 | |
| 1887 | /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF, |
| 1888 | and allocate the associated gnat-specific data. The gnat-specific |
| 1889 | data is also initialized to gnat_aux_default. */ |
| 1890 | void |
| 1891 | allocate_gnat_aux_type (struct type *type) |
| 1892 | { |
| 1893 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF; |
| 1894 | TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) |
| 1895 | TYPE_ALLOC (type, sizeof (struct gnat_aux_type)); |
| 1896 | *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default; |
| 1897 | } |
| 1898 | |
| 1899 | |
| 1900 | /* Helper function to initialize the standard scalar types. |
| 1901 | |
| 1902 | If NAME is non-NULL, then we make a copy of the string pointed |
| 1903 | to by name in the objfile_obstack for that objfile, and initialize |
| 1904 | the type name to that copy. There are places (mipsread.c in particular), |
| 1905 | where init_type is called with a NULL value for NAME). */ |
| 1906 | |
| 1907 | struct type * |
| 1908 | init_type (enum type_code code, int length, int flags, |
| 1909 | char *name, struct objfile *objfile) |
| 1910 | { |
| 1911 | struct type *type; |
| 1912 | |
| 1913 | type = alloc_type (objfile); |
| 1914 | TYPE_CODE (type) = code; |
| 1915 | TYPE_LENGTH (type) = length; |
| 1916 | |
| 1917 | gdb_assert (!(flags & (TYPE_FLAG_MIN - 1))); |
| 1918 | if (flags & TYPE_FLAG_UNSIGNED) |
| 1919 | TYPE_UNSIGNED (type) = 1; |
| 1920 | if (flags & TYPE_FLAG_NOSIGN) |
| 1921 | TYPE_NOSIGN (type) = 1; |
| 1922 | if (flags & TYPE_FLAG_STUB) |
| 1923 | TYPE_STUB (type) = 1; |
| 1924 | if (flags & TYPE_FLAG_TARGET_STUB) |
| 1925 | TYPE_TARGET_STUB (type) = 1; |
| 1926 | if (flags & TYPE_FLAG_STATIC) |
| 1927 | TYPE_STATIC (type) = 1; |
| 1928 | if (flags & TYPE_FLAG_PROTOTYPED) |
| 1929 | TYPE_PROTOTYPED (type) = 1; |
| 1930 | if (flags & TYPE_FLAG_INCOMPLETE) |
| 1931 | TYPE_INCOMPLETE (type) = 1; |
| 1932 | if (flags & TYPE_FLAG_VARARGS) |
| 1933 | TYPE_VARARGS (type) = 1; |
| 1934 | if (flags & TYPE_FLAG_VECTOR) |
| 1935 | TYPE_VECTOR (type) = 1; |
| 1936 | if (flags & TYPE_FLAG_STUB_SUPPORTED) |
| 1937 | TYPE_STUB_SUPPORTED (type) = 1; |
| 1938 | if (flags & TYPE_FLAG_FIXED_INSTANCE) |
| 1939 | TYPE_FIXED_INSTANCE (type) = 1; |
| 1940 | if (flags & TYPE_FLAG_GNU_IFUNC) |
| 1941 | TYPE_GNU_IFUNC (type) = 1; |
| 1942 | |
| 1943 | if (name) |
| 1944 | TYPE_NAME (type) = obsavestring (name, strlen (name), |
| 1945 | &objfile->objfile_obstack); |
| 1946 | |
| 1947 | /* C++ fancies. */ |
| 1948 | |
| 1949 | if (name && strcmp (name, "char") == 0) |
| 1950 | TYPE_NOSIGN (type) = 1; |
| 1951 | |
| 1952 | switch (code) |
| 1953 | { |
| 1954 | case TYPE_CODE_STRUCT: |
| 1955 | case TYPE_CODE_UNION: |
| 1956 | case TYPE_CODE_NAMESPACE: |
| 1957 | INIT_CPLUS_SPECIFIC (type); |
| 1958 | break; |
| 1959 | case TYPE_CODE_FLT: |
| 1960 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT; |
| 1961 | break; |
| 1962 | case TYPE_CODE_FUNC: |
| 1963 | INIT_FUNC_SPECIFIC (type); |
| 1964 | break; |
| 1965 | } |
| 1966 | return type; |
| 1967 | } |
| 1968 | |
| 1969 | int |
| 1970 | can_dereference (struct type *t) |
| 1971 | { |
| 1972 | /* FIXME: Should we return true for references as well as |
| 1973 | pointers? */ |
| 1974 | CHECK_TYPEDEF (t); |
| 1975 | return |
| 1976 | (t != NULL |
| 1977 | && TYPE_CODE (t) == TYPE_CODE_PTR |
| 1978 | && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID); |
| 1979 | } |
| 1980 | |
| 1981 | int |
| 1982 | is_integral_type (struct type *t) |
| 1983 | { |
| 1984 | CHECK_TYPEDEF (t); |
| 1985 | return |
| 1986 | ((t != NULL) |
| 1987 | && ((TYPE_CODE (t) == TYPE_CODE_INT) |
| 1988 | || (TYPE_CODE (t) == TYPE_CODE_ENUM) |
| 1989 | || (TYPE_CODE (t) == TYPE_CODE_FLAGS) |
| 1990 | || (TYPE_CODE (t) == TYPE_CODE_CHAR) |
| 1991 | || (TYPE_CODE (t) == TYPE_CODE_RANGE) |
| 1992 | || (TYPE_CODE (t) == TYPE_CODE_BOOL))); |
| 1993 | } |
| 1994 | |
| 1995 | /* Return true if TYPE is scalar. */ |
| 1996 | |
| 1997 | static int |
| 1998 | is_scalar_type (struct type *type) |
| 1999 | { |
| 2000 | CHECK_TYPEDEF (type); |
| 2001 | |
| 2002 | switch (TYPE_CODE (type)) |
| 2003 | { |
| 2004 | case TYPE_CODE_ARRAY: |
| 2005 | case TYPE_CODE_STRUCT: |
| 2006 | case TYPE_CODE_UNION: |
| 2007 | case TYPE_CODE_SET: |
| 2008 | case TYPE_CODE_STRING: |
| 2009 | case TYPE_CODE_BITSTRING: |
| 2010 | return 0; |
| 2011 | default: |
| 2012 | return 1; |
| 2013 | } |
| 2014 | } |
| 2015 | |
| 2016 | /* Return true if T is scalar, or a composite type which in practice has |
| 2017 | the memory layout of a scalar type. E.g., an array or struct with only |
| 2018 | one scalar element inside it, or a union with only scalar elements. */ |
| 2019 | |
| 2020 | int |
| 2021 | is_scalar_type_recursive (struct type *t) |
| 2022 | { |
| 2023 | CHECK_TYPEDEF (t); |
| 2024 | |
| 2025 | if (is_scalar_type (t)) |
| 2026 | return 1; |
| 2027 | /* Are we dealing with an array or string of known dimensions? */ |
| 2028 | else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY |
| 2029 | || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1 |
| 2030 | && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE) |
| 2031 | { |
| 2032 | LONGEST low_bound, high_bound; |
| 2033 | struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t)); |
| 2034 | |
| 2035 | get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound); |
| 2036 | |
| 2037 | return high_bound == low_bound && is_scalar_type_recursive (elt_type); |
| 2038 | } |
| 2039 | /* Are we dealing with a struct with one element? */ |
| 2040 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1) |
| 2041 | return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0)); |
| 2042 | else if (TYPE_CODE (t) == TYPE_CODE_UNION) |
| 2043 | { |
| 2044 | int i, n = TYPE_NFIELDS (t); |
| 2045 | |
| 2046 | /* If all elements of the union are scalar, then the union is scalar. */ |
| 2047 | for (i = 0; i < n; i++) |
| 2048 | if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i))) |
| 2049 | return 0; |
| 2050 | |
| 2051 | return 1; |
| 2052 | } |
| 2053 | |
| 2054 | return 0; |
| 2055 | } |
| 2056 | |
| 2057 | /* A helper function which returns true if types A and B represent the |
| 2058 | "same" class type. This is true if the types have the same main |
| 2059 | type, or the same name. */ |
| 2060 | |
| 2061 | int |
| 2062 | class_types_same_p (const struct type *a, const struct type *b) |
| 2063 | { |
| 2064 | return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b) |
| 2065 | || (TYPE_NAME (a) && TYPE_NAME (b) |
| 2066 | && !strcmp (TYPE_NAME (a), TYPE_NAME (b)))); |
| 2067 | } |
| 2068 | |
| 2069 | /* If BASE is an ancestor of DCLASS return the distance between them. |
| 2070 | otherwise return -1; |
| 2071 | eg: |
| 2072 | |
| 2073 | class A {}; |
| 2074 | class B: public A {}; |
| 2075 | class C: public B {}; |
| 2076 | class D: C {}; |
| 2077 | |
| 2078 | distance_to_ancestor (A, A, 0) = 0 |
| 2079 | distance_to_ancestor (A, B, 0) = 1 |
| 2080 | distance_to_ancestor (A, C, 0) = 2 |
| 2081 | distance_to_ancestor (A, D, 0) = 3 |
| 2082 | |
| 2083 | If PUBLIC is 1 then only public ancestors are considered, |
| 2084 | and the function returns the distance only if BASE is a public ancestor |
| 2085 | of DCLASS. |
| 2086 | Eg: |
| 2087 | |
| 2088 | distance_to_ancestor (A, D, 1) = -1. */ |
| 2089 | |
| 2090 | static int |
| 2091 | distance_to_ancestor (struct type *base, struct type *dclass, int public) |
| 2092 | { |
| 2093 | int i; |
| 2094 | int d; |
| 2095 | |
| 2096 | CHECK_TYPEDEF (base); |
| 2097 | CHECK_TYPEDEF (dclass); |
| 2098 | |
| 2099 | if (class_types_same_p (base, dclass)) |
| 2100 | return 0; |
| 2101 | |
| 2102 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) |
| 2103 | { |
| 2104 | if (public && ! BASETYPE_VIA_PUBLIC (dclass, i)) |
| 2105 | continue; |
| 2106 | |
| 2107 | d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), public); |
| 2108 | if (d >= 0) |
| 2109 | return 1 + d; |
| 2110 | } |
| 2111 | |
| 2112 | return -1; |
| 2113 | } |
| 2114 | |
| 2115 | /* Check whether BASE is an ancestor or base class or DCLASS |
| 2116 | Return 1 if so, and 0 if not. |
| 2117 | Note: If BASE and DCLASS are of the same type, this function |
| 2118 | will return 1. So for some class A, is_ancestor (A, A) will |
| 2119 | return 1. */ |
| 2120 | |
| 2121 | int |
| 2122 | is_ancestor (struct type *base, struct type *dclass) |
| 2123 | { |
| 2124 | return distance_to_ancestor (base, dclass, 0) >= 0; |
| 2125 | } |
| 2126 | |
| 2127 | /* Like is_ancestor, but only returns true when BASE is a public |
| 2128 | ancestor of DCLASS. */ |
| 2129 | |
| 2130 | int |
| 2131 | is_public_ancestor (struct type *base, struct type *dclass) |
| 2132 | { |
| 2133 | return distance_to_ancestor (base, dclass, 1) >= 0; |
| 2134 | } |
| 2135 | |
| 2136 | /* A helper function for is_unique_ancestor. */ |
| 2137 | |
| 2138 | static int |
| 2139 | is_unique_ancestor_worker (struct type *base, struct type *dclass, |
| 2140 | int *offset, |
| 2141 | const gdb_byte *valaddr, int embedded_offset, |
| 2142 | CORE_ADDR address, struct value *val) |
| 2143 | { |
| 2144 | int i, count = 0; |
| 2145 | |
| 2146 | CHECK_TYPEDEF (base); |
| 2147 | CHECK_TYPEDEF (dclass); |
| 2148 | |
| 2149 | for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i) |
| 2150 | { |
| 2151 | struct type *iter; |
| 2152 | int this_offset; |
| 2153 | |
| 2154 | iter = check_typedef (TYPE_BASECLASS (dclass, i)); |
| 2155 | |
| 2156 | this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset, |
| 2157 | address, val); |
| 2158 | |
| 2159 | if (class_types_same_p (base, iter)) |
| 2160 | { |
| 2161 | /* If this is the first subclass, set *OFFSET and set count |
| 2162 | to 1. Otherwise, if this is at the same offset as |
| 2163 | previous instances, do nothing. Otherwise, increment |
| 2164 | count. */ |
| 2165 | if (*offset == -1) |
| 2166 | { |
| 2167 | *offset = this_offset; |
| 2168 | count = 1; |
| 2169 | } |
| 2170 | else if (this_offset == *offset) |
| 2171 | { |
| 2172 | /* Nothing. */ |
| 2173 | } |
| 2174 | else |
| 2175 | ++count; |
| 2176 | } |
| 2177 | else |
| 2178 | count += is_unique_ancestor_worker (base, iter, offset, |
| 2179 | valaddr, |
| 2180 | embedded_offset + this_offset, |
| 2181 | address, val); |
| 2182 | } |
| 2183 | |
| 2184 | return count; |
| 2185 | } |
| 2186 | |
| 2187 | /* Like is_ancestor, but only returns true if BASE is a unique base |
| 2188 | class of the type of VAL. */ |
| 2189 | |
| 2190 | int |
| 2191 | is_unique_ancestor (struct type *base, struct value *val) |
| 2192 | { |
| 2193 | int offset = -1; |
| 2194 | |
| 2195 | return is_unique_ancestor_worker (base, value_type (val), &offset, |
| 2196 | value_contents_for_printing (val), |
| 2197 | value_embedded_offset (val), |
| 2198 | value_address (val), val) == 1; |
| 2199 | } |
| 2200 | |
| 2201 | \f |
| 2202 | |
| 2203 | /* Return the sum of the rank of A with the rank of B. */ |
| 2204 | |
| 2205 | struct rank |
| 2206 | sum_ranks (struct rank a, struct rank b) |
| 2207 | { |
| 2208 | struct rank c; |
| 2209 | c.rank = a.rank + b.rank; |
| 2210 | c.subrank = a.subrank + b.subrank; |
| 2211 | return c; |
| 2212 | } |
| 2213 | |
| 2214 | /* Compare rank A and B and return: |
| 2215 | 0 if a = b |
| 2216 | 1 if a is better than b |
| 2217 | -1 if b is better than a. */ |
| 2218 | |
| 2219 | int |
| 2220 | compare_ranks (struct rank a, struct rank b) |
| 2221 | { |
| 2222 | if (a.rank == b.rank) |
| 2223 | { |
| 2224 | if (a.subrank == b.subrank) |
| 2225 | return 0; |
| 2226 | if (a.subrank < b.subrank) |
| 2227 | return 1; |
| 2228 | if (a.subrank > b.subrank) |
| 2229 | return -1; |
| 2230 | } |
| 2231 | |
| 2232 | if (a.rank < b.rank) |
| 2233 | return 1; |
| 2234 | |
| 2235 | /* a.rank > b.rank */ |
| 2236 | return -1; |
| 2237 | } |
| 2238 | |
| 2239 | /* Functions for overload resolution begin here. */ |
| 2240 | |
| 2241 | /* Compare two badness vectors A and B and return the result. |
| 2242 | 0 => A and B are identical |
| 2243 | 1 => A and B are incomparable |
| 2244 | 2 => A is better than B |
| 2245 | 3 => A is worse than B */ |
| 2246 | |
| 2247 | int |
| 2248 | compare_badness (struct badness_vector *a, struct badness_vector *b) |
| 2249 | { |
| 2250 | int i; |
| 2251 | int tmp; |
| 2252 | short found_pos = 0; /* any positives in c? */ |
| 2253 | short found_neg = 0; /* any negatives in c? */ |
| 2254 | |
| 2255 | /* differing lengths => incomparable */ |
| 2256 | if (a->length != b->length) |
| 2257 | return 1; |
| 2258 | |
| 2259 | /* Subtract b from a */ |
| 2260 | for (i = 0; i < a->length; i++) |
| 2261 | { |
| 2262 | tmp = compare_ranks (b->rank[i], a->rank[i]); |
| 2263 | if (tmp > 0) |
| 2264 | found_pos = 1; |
| 2265 | else if (tmp < 0) |
| 2266 | found_neg = 1; |
| 2267 | } |
| 2268 | |
| 2269 | if (found_pos) |
| 2270 | { |
| 2271 | if (found_neg) |
| 2272 | return 1; /* incomparable */ |
| 2273 | else |
| 2274 | return 3; /* A > B */ |
| 2275 | } |
| 2276 | else |
| 2277 | /* no positives */ |
| 2278 | { |
| 2279 | if (found_neg) |
| 2280 | return 2; /* A < B */ |
| 2281 | else |
| 2282 | return 0; /* A == B */ |
| 2283 | } |
| 2284 | } |
| 2285 | |
| 2286 | /* Rank a function by comparing its parameter types (PARMS, length |
| 2287 | NPARMS), to the types of an argument list (ARGS, length NARGS). |
| 2288 | Return a pointer to a badness vector. This has NARGS + 1 |
| 2289 | entries. */ |
| 2290 | |
| 2291 | struct badness_vector * |
| 2292 | rank_function (struct type **parms, int nparms, |
| 2293 | struct value **args, int nargs) |
| 2294 | { |
| 2295 | int i; |
| 2296 | struct badness_vector *bv; |
| 2297 | int min_len = nparms < nargs ? nparms : nargs; |
| 2298 | |
| 2299 | bv = xmalloc (sizeof (struct badness_vector)); |
| 2300 | bv->length = nargs + 1; /* add 1 for the length-match rank. */ |
| 2301 | bv->rank = xmalloc ((nargs + 1) * sizeof (int)); |
| 2302 | |
| 2303 | /* First compare the lengths of the supplied lists. |
| 2304 | If there is a mismatch, set it to a high value. */ |
| 2305 | |
| 2306 | /* pai/1997-06-03 FIXME: when we have debug info about default |
| 2307 | arguments and ellipsis parameter lists, we should consider those |
| 2308 | and rank the length-match more finely. */ |
| 2309 | |
| 2310 | LENGTH_MATCH (bv) = (nargs != nparms) |
| 2311 | ? LENGTH_MISMATCH_BADNESS |
| 2312 | : EXACT_MATCH_BADNESS; |
| 2313 | |
| 2314 | /* Now rank all the parameters of the candidate function. */ |
| 2315 | for (i = 1; i <= min_len; i++) |
| 2316 | bv->rank[i] = rank_one_type (parms[i - 1], value_type (args[i - 1]), |
| 2317 | args[i - 1]); |
| 2318 | |
| 2319 | /* If more arguments than parameters, add dummy entries. */ |
| 2320 | for (i = min_len + 1; i <= nargs; i++) |
| 2321 | bv->rank[i] = TOO_FEW_PARAMS_BADNESS; |
| 2322 | |
| 2323 | return bv; |
| 2324 | } |
| 2325 | |
| 2326 | /* Compare the names of two integer types, assuming that any sign |
| 2327 | qualifiers have been checked already. We do it this way because |
| 2328 | there may be an "int" in the name of one of the types. */ |
| 2329 | |
| 2330 | static int |
| 2331 | integer_types_same_name_p (const char *first, const char *second) |
| 2332 | { |
| 2333 | int first_p, second_p; |
| 2334 | |
| 2335 | /* If both are shorts, return 1; if neither is a short, keep |
| 2336 | checking. */ |
| 2337 | first_p = (strstr (first, "short") != NULL); |
| 2338 | second_p = (strstr (second, "short") != NULL); |
| 2339 | if (first_p && second_p) |
| 2340 | return 1; |
| 2341 | if (first_p || second_p) |
| 2342 | return 0; |
| 2343 | |
| 2344 | /* Likewise for long. */ |
| 2345 | first_p = (strstr (first, "long") != NULL); |
| 2346 | second_p = (strstr (second, "long") != NULL); |
| 2347 | if (first_p && second_p) |
| 2348 | return 1; |
| 2349 | if (first_p || second_p) |
| 2350 | return 0; |
| 2351 | |
| 2352 | /* Likewise for char. */ |
| 2353 | first_p = (strstr (first, "char") != NULL); |
| 2354 | second_p = (strstr (second, "char") != NULL); |
| 2355 | if (first_p && second_p) |
| 2356 | return 1; |
| 2357 | if (first_p || second_p) |
| 2358 | return 0; |
| 2359 | |
| 2360 | /* They must both be ints. */ |
| 2361 | return 1; |
| 2362 | } |
| 2363 | |
| 2364 | /* Compares type A to type B returns 1 if the represent the same type |
| 2365 | 0 otherwise. */ |
| 2366 | |
| 2367 | static int |
| 2368 | types_equal (struct type *a, struct type *b) |
| 2369 | { |
| 2370 | /* Identical type pointers. */ |
| 2371 | /* However, this still doesn't catch all cases of same type for b |
| 2372 | and a. The reason is that builtin types are different from |
| 2373 | the same ones constructed from the object. */ |
| 2374 | if (a == b) |
| 2375 | return 1; |
| 2376 | |
| 2377 | /* Resolve typedefs */ |
| 2378 | if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF) |
| 2379 | a = check_typedef (a); |
| 2380 | if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF) |
| 2381 | b = check_typedef (b); |
| 2382 | |
| 2383 | /* If after resolving typedefs a and b are not of the same type |
| 2384 | code then they are not equal. */ |
| 2385 | if (TYPE_CODE (a) != TYPE_CODE (b)) |
| 2386 | return 0; |
| 2387 | |
| 2388 | /* If a and b are both pointers types or both reference types then |
| 2389 | they are equal of the same type iff the objects they refer to are |
| 2390 | of the same type. */ |
| 2391 | if (TYPE_CODE (a) == TYPE_CODE_PTR |
| 2392 | || TYPE_CODE (a) == TYPE_CODE_REF) |
| 2393 | return types_equal (TYPE_TARGET_TYPE (a), |
| 2394 | TYPE_TARGET_TYPE (b)); |
| 2395 | |
| 2396 | /* Well, damnit, if the names are exactly the same, I'll say they |
| 2397 | are exactly the same. This happens when we generate method |
| 2398 | stubs. The types won't point to the same address, but they |
| 2399 | really are the same. */ |
| 2400 | |
| 2401 | if (TYPE_NAME (a) && TYPE_NAME (b) |
| 2402 | && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0) |
| 2403 | return 1; |
| 2404 | |
| 2405 | /* Check if identical after resolving typedefs. */ |
| 2406 | if (a == b) |
| 2407 | return 1; |
| 2408 | |
| 2409 | return 0; |
| 2410 | } |
| 2411 | |
| 2412 | /* Compare one type (PARM) for compatibility with another (ARG). |
| 2413 | * PARM is intended to be the parameter type of a function; and |
| 2414 | * ARG is the supplied argument's type. This function tests if |
| 2415 | * the latter can be converted to the former. |
| 2416 | * VALUE is the argument's value or NULL if none (or called recursively) |
| 2417 | * |
| 2418 | * Return 0 if they are identical types; |
| 2419 | * Otherwise, return an integer which corresponds to how compatible |
| 2420 | * PARM is to ARG. The higher the return value, the worse the match. |
| 2421 | * Generally the "bad" conversions are all uniformly assigned a 100. */ |
| 2422 | |
| 2423 | struct rank |
| 2424 | rank_one_type (struct type *parm, struct type *arg, struct value *value) |
| 2425 | { |
| 2426 | struct rank rank = {0,0}; |
| 2427 | |
| 2428 | if (types_equal (parm, arg)) |
| 2429 | return EXACT_MATCH_BADNESS; |
| 2430 | |
| 2431 | /* Resolve typedefs */ |
| 2432 | if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF) |
| 2433 | parm = check_typedef (parm); |
| 2434 | if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF) |
| 2435 | arg = check_typedef (arg); |
| 2436 | |
| 2437 | /* See through references, since we can almost make non-references |
| 2438 | references. */ |
| 2439 | if (TYPE_CODE (arg) == TYPE_CODE_REF) |
| 2440 | return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL), |
| 2441 | REFERENCE_CONVERSION_BADNESS)); |
| 2442 | if (TYPE_CODE (parm) == TYPE_CODE_REF) |
| 2443 | return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL), |
| 2444 | REFERENCE_CONVERSION_BADNESS)); |
| 2445 | if (overload_debug) |
| 2446 | /* Debugging only. */ |
| 2447 | fprintf_filtered (gdb_stderr, |
| 2448 | "------ Arg is %s [%d], parm is %s [%d]\n", |
| 2449 | TYPE_NAME (arg), TYPE_CODE (arg), |
| 2450 | TYPE_NAME (parm), TYPE_CODE (parm)); |
| 2451 | |
| 2452 | /* x -> y means arg of type x being supplied for parameter of type y. */ |
| 2453 | |
| 2454 | switch (TYPE_CODE (parm)) |
| 2455 | { |
| 2456 | case TYPE_CODE_PTR: |
| 2457 | switch (TYPE_CODE (arg)) |
| 2458 | { |
| 2459 | case TYPE_CODE_PTR: |
| 2460 | |
| 2461 | /* Allowed pointer conversions are: |
| 2462 | (a) pointer to void-pointer conversion. */ |
| 2463 | if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID) |
| 2464 | return VOID_PTR_CONVERSION_BADNESS; |
| 2465 | |
| 2466 | /* (b) pointer to ancestor-pointer conversion. */ |
| 2467 | rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm), |
| 2468 | TYPE_TARGET_TYPE (arg), |
| 2469 | 0); |
| 2470 | if (rank.subrank >= 0) |
| 2471 | return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank); |
| 2472 | |
| 2473 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2474 | case TYPE_CODE_ARRAY: |
| 2475 | if (types_equal (TYPE_TARGET_TYPE (parm), |
| 2476 | TYPE_TARGET_TYPE (arg))) |
| 2477 | return EXACT_MATCH_BADNESS; |
| 2478 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2479 | case TYPE_CODE_FUNC: |
| 2480 | return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL); |
| 2481 | case TYPE_CODE_INT: |
| 2482 | if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT |
| 2483 | && value_as_long (value) == 0) |
| 2484 | { |
| 2485 | /* Null pointer conversion: allow it to be cast to a pointer. |
| 2486 | [4.10.1 of C++ standard draft n3290] */ |
| 2487 | return NULL_POINTER_CONVERSION_BADNESS; |
| 2488 | } |
| 2489 | /* fall through */ |
| 2490 | case TYPE_CODE_ENUM: |
| 2491 | case TYPE_CODE_FLAGS: |
| 2492 | case TYPE_CODE_CHAR: |
| 2493 | case TYPE_CODE_RANGE: |
| 2494 | case TYPE_CODE_BOOL: |
| 2495 | default: |
| 2496 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2497 | } |
| 2498 | case TYPE_CODE_ARRAY: |
| 2499 | switch (TYPE_CODE (arg)) |
| 2500 | { |
| 2501 | case TYPE_CODE_PTR: |
| 2502 | case TYPE_CODE_ARRAY: |
| 2503 | return rank_one_type (TYPE_TARGET_TYPE (parm), |
| 2504 | TYPE_TARGET_TYPE (arg), NULL); |
| 2505 | default: |
| 2506 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2507 | } |
| 2508 | case TYPE_CODE_FUNC: |
| 2509 | switch (TYPE_CODE (arg)) |
| 2510 | { |
| 2511 | case TYPE_CODE_PTR: /* funcptr -> func */ |
| 2512 | return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL); |
| 2513 | default: |
| 2514 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2515 | } |
| 2516 | case TYPE_CODE_INT: |
| 2517 | switch (TYPE_CODE (arg)) |
| 2518 | { |
| 2519 | case TYPE_CODE_INT: |
| 2520 | if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) |
| 2521 | { |
| 2522 | /* Deal with signed, unsigned, and plain chars and |
| 2523 | signed and unsigned ints. */ |
| 2524 | if (TYPE_NOSIGN (parm)) |
| 2525 | { |
| 2526 | /* This case only for character types. */ |
| 2527 | if (TYPE_NOSIGN (arg)) |
| 2528 | return EXACT_MATCH_BADNESS; /* plain char -> plain char */ |
| 2529 | else /* signed/unsigned char -> plain char */ |
| 2530 | return INTEGER_CONVERSION_BADNESS; |
| 2531 | } |
| 2532 | else if (TYPE_UNSIGNED (parm)) |
| 2533 | { |
| 2534 | if (TYPE_UNSIGNED (arg)) |
| 2535 | { |
| 2536 | /* unsigned int -> unsigned int, or |
| 2537 | unsigned long -> unsigned long */ |
| 2538 | if (integer_types_same_name_p (TYPE_NAME (parm), |
| 2539 | TYPE_NAME (arg))) |
| 2540 | return EXACT_MATCH_BADNESS; |
| 2541 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
| 2542 | "int") |
| 2543 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 2544 | "long")) |
| 2545 | /* unsigned int -> unsigned long */ |
| 2546 | return INTEGER_PROMOTION_BADNESS; |
| 2547 | else |
| 2548 | /* unsigned long -> unsigned int */ |
| 2549 | return INTEGER_CONVERSION_BADNESS; |
| 2550 | } |
| 2551 | else |
| 2552 | { |
| 2553 | if (integer_types_same_name_p (TYPE_NAME (arg), |
| 2554 | "long") |
| 2555 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 2556 | "int")) |
| 2557 | /* signed long -> unsigned int */ |
| 2558 | return INTEGER_CONVERSION_BADNESS; |
| 2559 | else |
| 2560 | /* signed int/long -> unsigned int/long */ |
| 2561 | return INTEGER_CONVERSION_BADNESS; |
| 2562 | } |
| 2563 | } |
| 2564 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) |
| 2565 | { |
| 2566 | if (integer_types_same_name_p (TYPE_NAME (parm), |
| 2567 | TYPE_NAME (arg))) |
| 2568 | return EXACT_MATCH_BADNESS; |
| 2569 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
| 2570 | "int") |
| 2571 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 2572 | "long")) |
| 2573 | return INTEGER_PROMOTION_BADNESS; |
| 2574 | else |
| 2575 | return INTEGER_CONVERSION_BADNESS; |
| 2576 | } |
| 2577 | else |
| 2578 | return INTEGER_CONVERSION_BADNESS; |
| 2579 | } |
| 2580 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 2581 | return INTEGER_PROMOTION_BADNESS; |
| 2582 | else |
| 2583 | return INTEGER_CONVERSION_BADNESS; |
| 2584 | case TYPE_CODE_ENUM: |
| 2585 | case TYPE_CODE_FLAGS: |
| 2586 | case TYPE_CODE_CHAR: |
| 2587 | case TYPE_CODE_RANGE: |
| 2588 | case TYPE_CODE_BOOL: |
| 2589 | return INTEGER_PROMOTION_BADNESS; |
| 2590 | case TYPE_CODE_FLT: |
| 2591 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2592 | case TYPE_CODE_PTR: |
| 2593 | return NS_POINTER_CONVERSION_BADNESS; |
| 2594 | default: |
| 2595 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2596 | } |
| 2597 | break; |
| 2598 | case TYPE_CODE_ENUM: |
| 2599 | switch (TYPE_CODE (arg)) |
| 2600 | { |
| 2601 | case TYPE_CODE_INT: |
| 2602 | case TYPE_CODE_CHAR: |
| 2603 | case TYPE_CODE_RANGE: |
| 2604 | case TYPE_CODE_BOOL: |
| 2605 | case TYPE_CODE_ENUM: |
| 2606 | return INTEGER_CONVERSION_BADNESS; |
| 2607 | case TYPE_CODE_FLT: |
| 2608 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2609 | default: |
| 2610 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2611 | } |
| 2612 | break; |
| 2613 | case TYPE_CODE_CHAR: |
| 2614 | switch (TYPE_CODE (arg)) |
| 2615 | { |
| 2616 | case TYPE_CODE_RANGE: |
| 2617 | case TYPE_CODE_BOOL: |
| 2618 | case TYPE_CODE_ENUM: |
| 2619 | return INTEGER_CONVERSION_BADNESS; |
| 2620 | case TYPE_CODE_FLT: |
| 2621 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2622 | case TYPE_CODE_INT: |
| 2623 | if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm)) |
| 2624 | return INTEGER_CONVERSION_BADNESS; |
| 2625 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 2626 | return INTEGER_PROMOTION_BADNESS; |
| 2627 | /* >>> !! else fall through !! <<< */ |
| 2628 | case TYPE_CODE_CHAR: |
| 2629 | /* Deal with signed, unsigned, and plain chars for C++ and |
| 2630 | with int cases falling through from previous case. */ |
| 2631 | if (TYPE_NOSIGN (parm)) |
| 2632 | { |
| 2633 | if (TYPE_NOSIGN (arg)) |
| 2634 | return EXACT_MATCH_BADNESS; |
| 2635 | else |
| 2636 | return INTEGER_CONVERSION_BADNESS; |
| 2637 | } |
| 2638 | else if (TYPE_UNSIGNED (parm)) |
| 2639 | { |
| 2640 | if (TYPE_UNSIGNED (arg)) |
| 2641 | return EXACT_MATCH_BADNESS; |
| 2642 | else |
| 2643 | return INTEGER_PROMOTION_BADNESS; |
| 2644 | } |
| 2645 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) |
| 2646 | return EXACT_MATCH_BADNESS; |
| 2647 | else |
| 2648 | return INTEGER_CONVERSION_BADNESS; |
| 2649 | default: |
| 2650 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2651 | } |
| 2652 | break; |
| 2653 | case TYPE_CODE_RANGE: |
| 2654 | switch (TYPE_CODE (arg)) |
| 2655 | { |
| 2656 | case TYPE_CODE_INT: |
| 2657 | case TYPE_CODE_CHAR: |
| 2658 | case TYPE_CODE_RANGE: |
| 2659 | case TYPE_CODE_BOOL: |
| 2660 | case TYPE_CODE_ENUM: |
| 2661 | return INTEGER_CONVERSION_BADNESS; |
| 2662 | case TYPE_CODE_FLT: |
| 2663 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2664 | default: |
| 2665 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2666 | } |
| 2667 | break; |
| 2668 | case TYPE_CODE_BOOL: |
| 2669 | switch (TYPE_CODE (arg)) |
| 2670 | { |
| 2671 | case TYPE_CODE_INT: |
| 2672 | case TYPE_CODE_CHAR: |
| 2673 | case TYPE_CODE_RANGE: |
| 2674 | case TYPE_CODE_ENUM: |
| 2675 | case TYPE_CODE_FLT: |
| 2676 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2677 | case TYPE_CODE_PTR: |
| 2678 | return BOOL_PTR_CONVERSION_BADNESS; |
| 2679 | case TYPE_CODE_BOOL: |
| 2680 | return EXACT_MATCH_BADNESS; |
| 2681 | default: |
| 2682 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2683 | } |
| 2684 | break; |
| 2685 | case TYPE_CODE_FLT: |
| 2686 | switch (TYPE_CODE (arg)) |
| 2687 | { |
| 2688 | case TYPE_CODE_FLT: |
| 2689 | if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 2690 | return FLOAT_PROMOTION_BADNESS; |
| 2691 | else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) |
| 2692 | return EXACT_MATCH_BADNESS; |
| 2693 | else |
| 2694 | return FLOAT_CONVERSION_BADNESS; |
| 2695 | case TYPE_CODE_INT: |
| 2696 | case TYPE_CODE_BOOL: |
| 2697 | case TYPE_CODE_ENUM: |
| 2698 | case TYPE_CODE_RANGE: |
| 2699 | case TYPE_CODE_CHAR: |
| 2700 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2701 | default: |
| 2702 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2703 | } |
| 2704 | break; |
| 2705 | case TYPE_CODE_COMPLEX: |
| 2706 | switch (TYPE_CODE (arg)) |
| 2707 | { /* Strictly not needed for C++, but... */ |
| 2708 | case TYPE_CODE_FLT: |
| 2709 | return FLOAT_PROMOTION_BADNESS; |
| 2710 | case TYPE_CODE_COMPLEX: |
| 2711 | return EXACT_MATCH_BADNESS; |
| 2712 | default: |
| 2713 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2714 | } |
| 2715 | break; |
| 2716 | case TYPE_CODE_STRUCT: |
| 2717 | /* currently same as TYPE_CODE_CLASS. */ |
| 2718 | switch (TYPE_CODE (arg)) |
| 2719 | { |
| 2720 | case TYPE_CODE_STRUCT: |
| 2721 | /* Check for derivation */ |
| 2722 | rank.subrank = distance_to_ancestor (parm, arg, 0); |
| 2723 | if (rank.subrank >= 0) |
| 2724 | return sum_ranks (BASE_CONVERSION_BADNESS, rank); |
| 2725 | /* else fall through */ |
| 2726 | default: |
| 2727 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2728 | } |
| 2729 | break; |
| 2730 | case TYPE_CODE_UNION: |
| 2731 | switch (TYPE_CODE (arg)) |
| 2732 | { |
| 2733 | case TYPE_CODE_UNION: |
| 2734 | default: |
| 2735 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2736 | } |
| 2737 | break; |
| 2738 | case TYPE_CODE_MEMBERPTR: |
| 2739 | switch (TYPE_CODE (arg)) |
| 2740 | { |
| 2741 | default: |
| 2742 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2743 | } |
| 2744 | break; |
| 2745 | case TYPE_CODE_METHOD: |
| 2746 | switch (TYPE_CODE (arg)) |
| 2747 | { |
| 2748 | |
| 2749 | default: |
| 2750 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2751 | } |
| 2752 | break; |
| 2753 | case TYPE_CODE_REF: |
| 2754 | switch (TYPE_CODE (arg)) |
| 2755 | { |
| 2756 | |
| 2757 | default: |
| 2758 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2759 | } |
| 2760 | |
| 2761 | break; |
| 2762 | case TYPE_CODE_SET: |
| 2763 | switch (TYPE_CODE (arg)) |
| 2764 | { |
| 2765 | /* Not in C++ */ |
| 2766 | case TYPE_CODE_SET: |
| 2767 | return rank_one_type (TYPE_FIELD_TYPE (parm, 0), |
| 2768 | TYPE_FIELD_TYPE (arg, 0), NULL); |
| 2769 | default: |
| 2770 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2771 | } |
| 2772 | break; |
| 2773 | case TYPE_CODE_VOID: |
| 2774 | default: |
| 2775 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2776 | } /* switch (TYPE_CODE (arg)) */ |
| 2777 | } |
| 2778 | |
| 2779 | |
| 2780 | /* End of functions for overload resolution. */ |
| 2781 | |
| 2782 | static void |
| 2783 | print_bit_vector (B_TYPE *bits, int nbits) |
| 2784 | { |
| 2785 | int bitno; |
| 2786 | |
| 2787 | for (bitno = 0; bitno < nbits; bitno++) |
| 2788 | { |
| 2789 | if ((bitno % 8) == 0) |
| 2790 | { |
| 2791 | puts_filtered (" "); |
| 2792 | } |
| 2793 | if (B_TST (bits, bitno)) |
| 2794 | printf_filtered (("1")); |
| 2795 | else |
| 2796 | printf_filtered (("0")); |
| 2797 | } |
| 2798 | } |
| 2799 | |
| 2800 | /* Note the first arg should be the "this" pointer, we may not want to |
| 2801 | include it since we may get into a infinitely recursive |
| 2802 | situation. */ |
| 2803 | |
| 2804 | static void |
| 2805 | print_arg_types (struct field *args, int nargs, int spaces) |
| 2806 | { |
| 2807 | if (args != NULL) |
| 2808 | { |
| 2809 | int i; |
| 2810 | |
| 2811 | for (i = 0; i < nargs; i++) |
| 2812 | recursive_dump_type (args[i].type, spaces + 2); |
| 2813 | } |
| 2814 | } |
| 2815 | |
| 2816 | int |
| 2817 | field_is_static (struct field *f) |
| 2818 | { |
| 2819 | /* "static" fields are the fields whose location is not relative |
| 2820 | to the address of the enclosing struct. It would be nice to |
| 2821 | have a dedicated flag that would be set for static fields when |
| 2822 | the type is being created. But in practice, checking the field |
| 2823 | loc_kind should give us an accurate answer. */ |
| 2824 | return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME |
| 2825 | || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR); |
| 2826 | } |
| 2827 | |
| 2828 | static void |
| 2829 | dump_fn_fieldlists (struct type *type, int spaces) |
| 2830 | { |
| 2831 | int method_idx; |
| 2832 | int overload_idx; |
| 2833 | struct fn_field *f; |
| 2834 | |
| 2835 | printfi_filtered (spaces, "fn_fieldlists "); |
| 2836 | gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout); |
| 2837 | printf_filtered ("\n"); |
| 2838 | for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++) |
| 2839 | { |
| 2840 | f = TYPE_FN_FIELDLIST1 (type, method_idx); |
| 2841 | printfi_filtered (spaces + 2, "[%d] name '%s' (", |
| 2842 | method_idx, |
| 2843 | TYPE_FN_FIELDLIST_NAME (type, method_idx)); |
| 2844 | gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx), |
| 2845 | gdb_stdout); |
| 2846 | printf_filtered (_(") length %d\n"), |
| 2847 | TYPE_FN_FIELDLIST_LENGTH (type, method_idx)); |
| 2848 | for (overload_idx = 0; |
| 2849 | overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx); |
| 2850 | overload_idx++) |
| 2851 | { |
| 2852 | printfi_filtered (spaces + 4, "[%d] physname '%s' (", |
| 2853 | overload_idx, |
| 2854 | TYPE_FN_FIELD_PHYSNAME (f, overload_idx)); |
| 2855 | gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx), |
| 2856 | gdb_stdout); |
| 2857 | printf_filtered (")\n"); |
| 2858 | printfi_filtered (spaces + 8, "type "); |
| 2859 | gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx), |
| 2860 | gdb_stdout); |
| 2861 | printf_filtered ("\n"); |
| 2862 | |
| 2863 | recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx), |
| 2864 | spaces + 8 + 2); |
| 2865 | |
| 2866 | printfi_filtered (spaces + 8, "args "); |
| 2867 | gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx), |
| 2868 | gdb_stdout); |
| 2869 | printf_filtered ("\n"); |
| 2870 | |
| 2871 | print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx), |
| 2872 | TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, |
| 2873 | overload_idx)), |
| 2874 | spaces); |
| 2875 | printfi_filtered (spaces + 8, "fcontext "); |
| 2876 | gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx), |
| 2877 | gdb_stdout); |
| 2878 | printf_filtered ("\n"); |
| 2879 | |
| 2880 | printfi_filtered (spaces + 8, "is_const %d\n", |
| 2881 | TYPE_FN_FIELD_CONST (f, overload_idx)); |
| 2882 | printfi_filtered (spaces + 8, "is_volatile %d\n", |
| 2883 | TYPE_FN_FIELD_VOLATILE (f, overload_idx)); |
| 2884 | printfi_filtered (spaces + 8, "is_private %d\n", |
| 2885 | TYPE_FN_FIELD_PRIVATE (f, overload_idx)); |
| 2886 | printfi_filtered (spaces + 8, "is_protected %d\n", |
| 2887 | TYPE_FN_FIELD_PROTECTED (f, overload_idx)); |
| 2888 | printfi_filtered (spaces + 8, "is_stub %d\n", |
| 2889 | TYPE_FN_FIELD_STUB (f, overload_idx)); |
| 2890 | printfi_filtered (spaces + 8, "voffset %u\n", |
| 2891 | TYPE_FN_FIELD_VOFFSET (f, overload_idx)); |
| 2892 | } |
| 2893 | } |
| 2894 | } |
| 2895 | |
| 2896 | static void |
| 2897 | print_cplus_stuff (struct type *type, int spaces) |
| 2898 | { |
| 2899 | printfi_filtered (spaces, "n_baseclasses %d\n", |
| 2900 | TYPE_N_BASECLASSES (type)); |
| 2901 | printfi_filtered (spaces, "nfn_fields %d\n", |
| 2902 | TYPE_NFN_FIELDS (type)); |
| 2903 | if (TYPE_N_BASECLASSES (type) > 0) |
| 2904 | { |
| 2905 | printfi_filtered (spaces, "virtual_field_bits (%d bits at *", |
| 2906 | TYPE_N_BASECLASSES (type)); |
| 2907 | gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type), |
| 2908 | gdb_stdout); |
| 2909 | printf_filtered (")"); |
| 2910 | |
| 2911 | print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type), |
| 2912 | TYPE_N_BASECLASSES (type)); |
| 2913 | puts_filtered ("\n"); |
| 2914 | } |
| 2915 | if (TYPE_NFIELDS (type) > 0) |
| 2916 | { |
| 2917 | if (TYPE_FIELD_PRIVATE_BITS (type) != NULL) |
| 2918 | { |
| 2919 | printfi_filtered (spaces, |
| 2920 | "private_field_bits (%d bits at *", |
| 2921 | TYPE_NFIELDS (type)); |
| 2922 | gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type), |
| 2923 | gdb_stdout); |
| 2924 | printf_filtered (")"); |
| 2925 | print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type), |
| 2926 | TYPE_NFIELDS (type)); |
| 2927 | puts_filtered ("\n"); |
| 2928 | } |
| 2929 | if (TYPE_FIELD_PROTECTED_BITS (type) != NULL) |
| 2930 | { |
| 2931 | printfi_filtered (spaces, |
| 2932 | "protected_field_bits (%d bits at *", |
| 2933 | TYPE_NFIELDS (type)); |
| 2934 | gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type), |
| 2935 | gdb_stdout); |
| 2936 | printf_filtered (")"); |
| 2937 | print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type), |
| 2938 | TYPE_NFIELDS (type)); |
| 2939 | puts_filtered ("\n"); |
| 2940 | } |
| 2941 | } |
| 2942 | if (TYPE_NFN_FIELDS (type) > 0) |
| 2943 | { |
| 2944 | dump_fn_fieldlists (type, spaces); |
| 2945 | } |
| 2946 | } |
| 2947 | |
| 2948 | /* Print the contents of the TYPE's type_specific union, assuming that |
| 2949 | its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */ |
| 2950 | |
| 2951 | static void |
| 2952 | print_gnat_stuff (struct type *type, int spaces) |
| 2953 | { |
| 2954 | struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type); |
| 2955 | |
| 2956 | recursive_dump_type (descriptive_type, spaces + 2); |
| 2957 | } |
| 2958 | |
| 2959 | static struct obstack dont_print_type_obstack; |
| 2960 | |
| 2961 | void |
| 2962 | recursive_dump_type (struct type *type, int spaces) |
| 2963 | { |
| 2964 | int idx; |
| 2965 | |
| 2966 | if (spaces == 0) |
| 2967 | obstack_begin (&dont_print_type_obstack, 0); |
| 2968 | |
| 2969 | if (TYPE_NFIELDS (type) > 0 |
| 2970 | || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0)) |
| 2971 | { |
| 2972 | struct type **first_dont_print |
| 2973 | = (struct type **) obstack_base (&dont_print_type_obstack); |
| 2974 | |
| 2975 | int i = (struct type **) |
| 2976 | obstack_next_free (&dont_print_type_obstack) - first_dont_print; |
| 2977 | |
| 2978 | while (--i >= 0) |
| 2979 | { |
| 2980 | if (type == first_dont_print[i]) |
| 2981 | { |
| 2982 | printfi_filtered (spaces, "type node "); |
| 2983 | gdb_print_host_address (type, gdb_stdout); |
| 2984 | printf_filtered (_(" <same as already seen type>\n")); |
| 2985 | return; |
| 2986 | } |
| 2987 | } |
| 2988 | |
| 2989 | obstack_ptr_grow (&dont_print_type_obstack, type); |
| 2990 | } |
| 2991 | |
| 2992 | printfi_filtered (spaces, "type node "); |
| 2993 | gdb_print_host_address (type, gdb_stdout); |
| 2994 | printf_filtered ("\n"); |
| 2995 | printfi_filtered (spaces, "name '%s' (", |
| 2996 | TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>"); |
| 2997 | gdb_print_host_address (TYPE_NAME (type), gdb_stdout); |
| 2998 | printf_filtered (")\n"); |
| 2999 | printfi_filtered (spaces, "tagname '%s' (", |
| 3000 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>"); |
| 3001 | gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout); |
| 3002 | printf_filtered (")\n"); |
| 3003 | printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type)); |
| 3004 | switch (TYPE_CODE (type)) |
| 3005 | { |
| 3006 | case TYPE_CODE_UNDEF: |
| 3007 | printf_filtered ("(TYPE_CODE_UNDEF)"); |
| 3008 | break; |
| 3009 | case TYPE_CODE_PTR: |
| 3010 | printf_filtered ("(TYPE_CODE_PTR)"); |
| 3011 | break; |
| 3012 | case TYPE_CODE_ARRAY: |
| 3013 | printf_filtered ("(TYPE_CODE_ARRAY)"); |
| 3014 | break; |
| 3015 | case TYPE_CODE_STRUCT: |
| 3016 | printf_filtered ("(TYPE_CODE_STRUCT)"); |
| 3017 | break; |
| 3018 | case TYPE_CODE_UNION: |
| 3019 | printf_filtered ("(TYPE_CODE_UNION)"); |
| 3020 | break; |
| 3021 | case TYPE_CODE_ENUM: |
| 3022 | printf_filtered ("(TYPE_CODE_ENUM)"); |
| 3023 | break; |
| 3024 | case TYPE_CODE_FLAGS: |
| 3025 | printf_filtered ("(TYPE_CODE_FLAGS)"); |
| 3026 | break; |
| 3027 | case TYPE_CODE_FUNC: |
| 3028 | printf_filtered ("(TYPE_CODE_FUNC)"); |
| 3029 | break; |
| 3030 | case TYPE_CODE_INT: |
| 3031 | printf_filtered ("(TYPE_CODE_INT)"); |
| 3032 | break; |
| 3033 | case TYPE_CODE_FLT: |
| 3034 | printf_filtered ("(TYPE_CODE_FLT)"); |
| 3035 | break; |
| 3036 | case TYPE_CODE_VOID: |
| 3037 | printf_filtered ("(TYPE_CODE_VOID)"); |
| 3038 | break; |
| 3039 | case TYPE_CODE_SET: |
| 3040 | printf_filtered ("(TYPE_CODE_SET)"); |
| 3041 | break; |
| 3042 | case TYPE_CODE_RANGE: |
| 3043 | printf_filtered ("(TYPE_CODE_RANGE)"); |
| 3044 | break; |
| 3045 | case TYPE_CODE_STRING: |
| 3046 | printf_filtered ("(TYPE_CODE_STRING)"); |
| 3047 | break; |
| 3048 | case TYPE_CODE_BITSTRING: |
| 3049 | printf_filtered ("(TYPE_CODE_BITSTRING)"); |
| 3050 | break; |
| 3051 | case TYPE_CODE_ERROR: |
| 3052 | printf_filtered ("(TYPE_CODE_ERROR)"); |
| 3053 | break; |
| 3054 | case TYPE_CODE_MEMBERPTR: |
| 3055 | printf_filtered ("(TYPE_CODE_MEMBERPTR)"); |
| 3056 | break; |
| 3057 | case TYPE_CODE_METHODPTR: |
| 3058 | printf_filtered ("(TYPE_CODE_METHODPTR)"); |
| 3059 | break; |
| 3060 | case TYPE_CODE_METHOD: |
| 3061 | printf_filtered ("(TYPE_CODE_METHOD)"); |
| 3062 | break; |
| 3063 | case TYPE_CODE_REF: |
| 3064 | printf_filtered ("(TYPE_CODE_REF)"); |
| 3065 | break; |
| 3066 | case TYPE_CODE_CHAR: |
| 3067 | printf_filtered ("(TYPE_CODE_CHAR)"); |
| 3068 | break; |
| 3069 | case TYPE_CODE_BOOL: |
| 3070 | printf_filtered ("(TYPE_CODE_BOOL)"); |
| 3071 | break; |
| 3072 | case TYPE_CODE_COMPLEX: |
| 3073 | printf_filtered ("(TYPE_CODE_COMPLEX)"); |
| 3074 | break; |
| 3075 | case TYPE_CODE_TYPEDEF: |
| 3076 | printf_filtered ("(TYPE_CODE_TYPEDEF)"); |
| 3077 | break; |
| 3078 | case TYPE_CODE_NAMESPACE: |
| 3079 | printf_filtered ("(TYPE_CODE_NAMESPACE)"); |
| 3080 | break; |
| 3081 | default: |
| 3082 | printf_filtered ("(UNKNOWN TYPE CODE)"); |
| 3083 | break; |
| 3084 | } |
| 3085 | puts_filtered ("\n"); |
| 3086 | printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type)); |
| 3087 | if (TYPE_OBJFILE_OWNED (type)) |
| 3088 | { |
| 3089 | printfi_filtered (spaces, "objfile "); |
| 3090 | gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout); |
| 3091 | } |
| 3092 | else |
| 3093 | { |
| 3094 | printfi_filtered (spaces, "gdbarch "); |
| 3095 | gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout); |
| 3096 | } |
| 3097 | printf_filtered ("\n"); |
| 3098 | printfi_filtered (spaces, "target_type "); |
| 3099 | gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout); |
| 3100 | printf_filtered ("\n"); |
| 3101 | if (TYPE_TARGET_TYPE (type) != NULL) |
| 3102 | { |
| 3103 | recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2); |
| 3104 | } |
| 3105 | printfi_filtered (spaces, "pointer_type "); |
| 3106 | gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout); |
| 3107 | printf_filtered ("\n"); |
| 3108 | printfi_filtered (spaces, "reference_type "); |
| 3109 | gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout); |
| 3110 | printf_filtered ("\n"); |
| 3111 | printfi_filtered (spaces, "type_chain "); |
| 3112 | gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout); |
| 3113 | printf_filtered ("\n"); |
| 3114 | printfi_filtered (spaces, "instance_flags 0x%x", |
| 3115 | TYPE_INSTANCE_FLAGS (type)); |
| 3116 | if (TYPE_CONST (type)) |
| 3117 | { |
| 3118 | puts_filtered (" TYPE_FLAG_CONST"); |
| 3119 | } |
| 3120 | if (TYPE_VOLATILE (type)) |
| 3121 | { |
| 3122 | puts_filtered (" TYPE_FLAG_VOLATILE"); |
| 3123 | } |
| 3124 | if (TYPE_CODE_SPACE (type)) |
| 3125 | { |
| 3126 | puts_filtered (" TYPE_FLAG_CODE_SPACE"); |
| 3127 | } |
| 3128 | if (TYPE_DATA_SPACE (type)) |
| 3129 | { |
| 3130 | puts_filtered (" TYPE_FLAG_DATA_SPACE"); |
| 3131 | } |
| 3132 | if (TYPE_ADDRESS_CLASS_1 (type)) |
| 3133 | { |
| 3134 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1"); |
| 3135 | } |
| 3136 | if (TYPE_ADDRESS_CLASS_2 (type)) |
| 3137 | { |
| 3138 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2"); |
| 3139 | } |
| 3140 | puts_filtered ("\n"); |
| 3141 | |
| 3142 | printfi_filtered (spaces, "flags"); |
| 3143 | if (TYPE_UNSIGNED (type)) |
| 3144 | { |
| 3145 | puts_filtered (" TYPE_FLAG_UNSIGNED"); |
| 3146 | } |
| 3147 | if (TYPE_NOSIGN (type)) |
| 3148 | { |
| 3149 | puts_filtered (" TYPE_FLAG_NOSIGN"); |
| 3150 | } |
| 3151 | if (TYPE_STUB (type)) |
| 3152 | { |
| 3153 | puts_filtered (" TYPE_FLAG_STUB"); |
| 3154 | } |
| 3155 | if (TYPE_TARGET_STUB (type)) |
| 3156 | { |
| 3157 | puts_filtered (" TYPE_FLAG_TARGET_STUB"); |
| 3158 | } |
| 3159 | if (TYPE_STATIC (type)) |
| 3160 | { |
| 3161 | puts_filtered (" TYPE_FLAG_STATIC"); |
| 3162 | } |
| 3163 | if (TYPE_PROTOTYPED (type)) |
| 3164 | { |
| 3165 | puts_filtered (" TYPE_FLAG_PROTOTYPED"); |
| 3166 | } |
| 3167 | if (TYPE_INCOMPLETE (type)) |
| 3168 | { |
| 3169 | puts_filtered (" TYPE_FLAG_INCOMPLETE"); |
| 3170 | } |
| 3171 | if (TYPE_VARARGS (type)) |
| 3172 | { |
| 3173 | puts_filtered (" TYPE_FLAG_VARARGS"); |
| 3174 | } |
| 3175 | /* This is used for things like AltiVec registers on ppc. Gcc emits |
| 3176 | an attribute for the array type, which tells whether or not we |
| 3177 | have a vector, instead of a regular array. */ |
| 3178 | if (TYPE_VECTOR (type)) |
| 3179 | { |
| 3180 | puts_filtered (" TYPE_FLAG_VECTOR"); |
| 3181 | } |
| 3182 | if (TYPE_FIXED_INSTANCE (type)) |
| 3183 | { |
| 3184 | puts_filtered (" TYPE_FIXED_INSTANCE"); |
| 3185 | } |
| 3186 | if (TYPE_STUB_SUPPORTED (type)) |
| 3187 | { |
| 3188 | puts_filtered (" TYPE_STUB_SUPPORTED"); |
| 3189 | } |
| 3190 | if (TYPE_NOTTEXT (type)) |
| 3191 | { |
| 3192 | puts_filtered (" TYPE_NOTTEXT"); |
| 3193 | } |
| 3194 | puts_filtered ("\n"); |
| 3195 | printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type)); |
| 3196 | gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout); |
| 3197 | puts_filtered ("\n"); |
| 3198 | for (idx = 0; idx < TYPE_NFIELDS (type); idx++) |
| 3199 | { |
| 3200 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) |
| 3201 | printfi_filtered (spaces + 2, |
| 3202 | "[%d] enumval %s type ", |
| 3203 | idx, plongest (TYPE_FIELD_ENUMVAL (type, idx))); |
| 3204 | else |
| 3205 | printfi_filtered (spaces + 2, |
| 3206 | "[%d] bitpos %d bitsize %d type ", |
| 3207 | idx, TYPE_FIELD_BITPOS (type, idx), |
| 3208 | TYPE_FIELD_BITSIZE (type, idx)); |
| 3209 | gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout); |
| 3210 | printf_filtered (" name '%s' (", |
| 3211 | TYPE_FIELD_NAME (type, idx) != NULL |
| 3212 | ? TYPE_FIELD_NAME (type, idx) |
| 3213 | : "<NULL>"); |
| 3214 | gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout); |
| 3215 | printf_filtered (")\n"); |
| 3216 | if (TYPE_FIELD_TYPE (type, idx) != NULL) |
| 3217 | { |
| 3218 | recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4); |
| 3219 | } |
| 3220 | } |
| 3221 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| 3222 | { |
| 3223 | printfi_filtered (spaces, "low %s%s high %s%s\n", |
| 3224 | plongest (TYPE_LOW_BOUND (type)), |
| 3225 | TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "", |
| 3226 | plongest (TYPE_HIGH_BOUND (type)), |
| 3227 | TYPE_HIGH_BOUND_UNDEFINED (type) |
| 3228 | ? " (undefined)" : ""); |
| 3229 | } |
| 3230 | printfi_filtered (spaces, "vptr_basetype "); |
| 3231 | gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout); |
| 3232 | puts_filtered ("\n"); |
| 3233 | if (TYPE_VPTR_BASETYPE (type) != NULL) |
| 3234 | { |
| 3235 | recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2); |
| 3236 | } |
| 3237 | printfi_filtered (spaces, "vptr_fieldno %d\n", |
| 3238 | TYPE_VPTR_FIELDNO (type)); |
| 3239 | |
| 3240 | switch (TYPE_SPECIFIC_FIELD (type)) |
| 3241 | { |
| 3242 | case TYPE_SPECIFIC_CPLUS_STUFF: |
| 3243 | printfi_filtered (spaces, "cplus_stuff "); |
| 3244 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), |
| 3245 | gdb_stdout); |
| 3246 | puts_filtered ("\n"); |
| 3247 | print_cplus_stuff (type, spaces); |
| 3248 | break; |
| 3249 | |
| 3250 | case TYPE_SPECIFIC_GNAT_STUFF: |
| 3251 | printfi_filtered (spaces, "gnat_stuff "); |
| 3252 | gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout); |
| 3253 | puts_filtered ("\n"); |
| 3254 | print_gnat_stuff (type, spaces); |
| 3255 | break; |
| 3256 | |
| 3257 | case TYPE_SPECIFIC_FLOATFORMAT: |
| 3258 | printfi_filtered (spaces, "floatformat "); |
| 3259 | if (TYPE_FLOATFORMAT (type) == NULL) |
| 3260 | puts_filtered ("(null)"); |
| 3261 | else |
| 3262 | { |
| 3263 | puts_filtered ("{ "); |
| 3264 | if (TYPE_FLOATFORMAT (type)[0] == NULL |
| 3265 | || TYPE_FLOATFORMAT (type)[0]->name == NULL) |
| 3266 | puts_filtered ("(null)"); |
| 3267 | else |
| 3268 | puts_filtered (TYPE_FLOATFORMAT (type)[0]->name); |
| 3269 | |
| 3270 | puts_filtered (", "); |
| 3271 | if (TYPE_FLOATFORMAT (type)[1] == NULL |
| 3272 | || TYPE_FLOATFORMAT (type)[1]->name == NULL) |
| 3273 | puts_filtered ("(null)"); |
| 3274 | else |
| 3275 | puts_filtered (TYPE_FLOATFORMAT (type)[1]->name); |
| 3276 | |
| 3277 | puts_filtered (" }"); |
| 3278 | } |
| 3279 | puts_filtered ("\n"); |
| 3280 | break; |
| 3281 | |
| 3282 | case TYPE_SPECIFIC_FUNC: |
| 3283 | printfi_filtered (spaces, "calling_convention %d\n", |
| 3284 | TYPE_CALLING_CONVENTION (type)); |
| 3285 | /* tail_call_list is not printed. */ |
| 3286 | break; |
| 3287 | } |
| 3288 | |
| 3289 | if (spaces == 0) |
| 3290 | obstack_free (&dont_print_type_obstack, NULL); |
| 3291 | } |
| 3292 | |
| 3293 | /* Trivial helpers for the libiberty hash table, for mapping one |
| 3294 | type to another. */ |
| 3295 | |
| 3296 | struct type_pair |
| 3297 | { |
| 3298 | struct type *old, *new; |
| 3299 | }; |
| 3300 | |
| 3301 | static hashval_t |
| 3302 | type_pair_hash (const void *item) |
| 3303 | { |
| 3304 | const struct type_pair *pair = item; |
| 3305 | |
| 3306 | return htab_hash_pointer (pair->old); |
| 3307 | } |
| 3308 | |
| 3309 | static int |
| 3310 | type_pair_eq (const void *item_lhs, const void *item_rhs) |
| 3311 | { |
| 3312 | const struct type_pair *lhs = item_lhs, *rhs = item_rhs; |
| 3313 | |
| 3314 | return lhs->old == rhs->old; |
| 3315 | } |
| 3316 | |
| 3317 | /* Allocate the hash table used by copy_type_recursive to walk |
| 3318 | types without duplicates. We use OBJFILE's obstack, because |
| 3319 | OBJFILE is about to be deleted. */ |
| 3320 | |
| 3321 | htab_t |
| 3322 | create_copied_types_hash (struct objfile *objfile) |
| 3323 | { |
| 3324 | return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq, |
| 3325 | NULL, &objfile->objfile_obstack, |
| 3326 | hashtab_obstack_allocate, |
| 3327 | dummy_obstack_deallocate); |
| 3328 | } |
| 3329 | |
| 3330 | /* Recursively copy (deep copy) TYPE, if it is associated with |
| 3331 | OBJFILE. Return a new type allocated using malloc, a saved type if |
| 3332 | we have already visited TYPE (using COPIED_TYPES), or TYPE if it is |
| 3333 | not associated with OBJFILE. */ |
| 3334 | |
| 3335 | struct type * |
| 3336 | copy_type_recursive (struct objfile *objfile, |
| 3337 | struct type *type, |
| 3338 | htab_t copied_types) |
| 3339 | { |
| 3340 | struct type_pair *stored, pair; |
| 3341 | void **slot; |
| 3342 | struct type *new_type; |
| 3343 | |
| 3344 | if (! TYPE_OBJFILE_OWNED (type)) |
| 3345 | return type; |
| 3346 | |
| 3347 | /* This type shouldn't be pointing to any types in other objfiles; |
| 3348 | if it did, the type might disappear unexpectedly. */ |
| 3349 | gdb_assert (TYPE_OBJFILE (type) == objfile); |
| 3350 | |
| 3351 | pair.old = type; |
| 3352 | slot = htab_find_slot (copied_types, &pair, INSERT); |
| 3353 | if (*slot != NULL) |
| 3354 | return ((struct type_pair *) *slot)->new; |
| 3355 | |
| 3356 | new_type = alloc_type_arch (get_type_arch (type)); |
| 3357 | |
| 3358 | /* We must add the new type to the hash table immediately, in case |
| 3359 | we encounter this type again during a recursive call below. */ |
| 3360 | stored |
| 3361 | = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair)); |
| 3362 | stored->old = type; |
| 3363 | stored->new = new_type; |
| 3364 | *slot = stored; |
| 3365 | |
| 3366 | /* Copy the common fields of types. For the main type, we simply |
| 3367 | copy the entire thing and then update specific fields as needed. */ |
| 3368 | *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type); |
| 3369 | TYPE_OBJFILE_OWNED (new_type) = 0; |
| 3370 | TYPE_OWNER (new_type).gdbarch = get_type_arch (type); |
| 3371 | |
| 3372 | if (TYPE_NAME (type)) |
| 3373 | TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type)); |
| 3374 | if (TYPE_TAG_NAME (type)) |
| 3375 | TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type)); |
| 3376 | |
| 3377 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
| 3378 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); |
| 3379 | |
| 3380 | /* Copy the fields. */ |
| 3381 | if (TYPE_NFIELDS (type)) |
| 3382 | { |
| 3383 | int i, nfields; |
| 3384 | |
| 3385 | nfields = TYPE_NFIELDS (type); |
| 3386 | TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field); |
| 3387 | for (i = 0; i < nfields; i++) |
| 3388 | { |
| 3389 | TYPE_FIELD_ARTIFICIAL (new_type, i) = |
| 3390 | TYPE_FIELD_ARTIFICIAL (type, i); |
| 3391 | TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i); |
| 3392 | if (TYPE_FIELD_TYPE (type, i)) |
| 3393 | TYPE_FIELD_TYPE (new_type, i) |
| 3394 | = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i), |
| 3395 | copied_types); |
| 3396 | if (TYPE_FIELD_NAME (type, i)) |
| 3397 | TYPE_FIELD_NAME (new_type, i) = |
| 3398 | xstrdup (TYPE_FIELD_NAME (type, i)); |
| 3399 | switch (TYPE_FIELD_LOC_KIND (type, i)) |
| 3400 | { |
| 3401 | case FIELD_LOC_KIND_BITPOS: |
| 3402 | SET_FIELD_BITPOS (TYPE_FIELD (new_type, i), |
| 3403 | TYPE_FIELD_BITPOS (type, i)); |
| 3404 | break; |
| 3405 | case FIELD_LOC_KIND_ENUMVAL: |
| 3406 | SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i), |
| 3407 | TYPE_FIELD_ENUMVAL (type, i)); |
| 3408 | break; |
| 3409 | case FIELD_LOC_KIND_PHYSADDR: |
| 3410 | SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i), |
| 3411 | TYPE_FIELD_STATIC_PHYSADDR (type, i)); |
| 3412 | break; |
| 3413 | case FIELD_LOC_KIND_PHYSNAME: |
| 3414 | SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i), |
| 3415 | xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type, |
| 3416 | i))); |
| 3417 | break; |
| 3418 | default: |
| 3419 | internal_error (__FILE__, __LINE__, |
| 3420 | _("Unexpected type field location kind: %d"), |
| 3421 | TYPE_FIELD_LOC_KIND (type, i)); |
| 3422 | } |
| 3423 | } |
| 3424 | } |
| 3425 | |
| 3426 | /* For range types, copy the bounds information. */ |
| 3427 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| 3428 | { |
| 3429 | TYPE_RANGE_DATA (new_type) = xmalloc (sizeof (struct range_bounds)); |
| 3430 | *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type); |
| 3431 | } |
| 3432 | |
| 3433 | /* Copy pointers to other types. */ |
| 3434 | if (TYPE_TARGET_TYPE (type)) |
| 3435 | TYPE_TARGET_TYPE (new_type) = |
| 3436 | copy_type_recursive (objfile, |
| 3437 | TYPE_TARGET_TYPE (type), |
| 3438 | copied_types); |
| 3439 | if (TYPE_VPTR_BASETYPE (type)) |
| 3440 | TYPE_VPTR_BASETYPE (new_type) = |
| 3441 | copy_type_recursive (objfile, |
| 3442 | TYPE_VPTR_BASETYPE (type), |
| 3443 | copied_types); |
| 3444 | /* Maybe copy the type_specific bits. |
| 3445 | |
| 3446 | NOTE drow/2005-12-09: We do not copy the C++-specific bits like |
| 3447 | base classes and methods. There's no fundamental reason why we |
| 3448 | can't, but at the moment it is not needed. */ |
| 3449 | |
| 3450 | if (TYPE_CODE (type) == TYPE_CODE_FLT) |
| 3451 | TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type); |
| 3452 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 3453 | || TYPE_CODE (type) == TYPE_CODE_UNION |
| 3454 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
| 3455 | INIT_CPLUS_SPECIFIC (new_type); |
| 3456 | |
| 3457 | return new_type; |
| 3458 | } |
| 3459 | |
| 3460 | /* Make a copy of the given TYPE, except that the pointer & reference |
| 3461 | types are not preserved. |
| 3462 | |
| 3463 | This function assumes that the given type has an associated objfile. |
| 3464 | This objfile is used to allocate the new type. */ |
| 3465 | |
| 3466 | struct type * |
| 3467 | copy_type (const struct type *type) |
| 3468 | { |
| 3469 | struct type *new_type; |
| 3470 | |
| 3471 | gdb_assert (TYPE_OBJFILE_OWNED (type)); |
| 3472 | |
| 3473 | new_type = alloc_type_copy (type); |
| 3474 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
| 3475 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); |
| 3476 | memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type), |
| 3477 | sizeof (struct main_type)); |
| 3478 | |
| 3479 | return new_type; |
| 3480 | } |
| 3481 | |
| 3482 | |
| 3483 | /* Helper functions to initialize architecture-specific types. */ |
| 3484 | |
| 3485 | /* Allocate a type structure associated with GDBARCH and set its |
| 3486 | CODE, LENGTH, and NAME fields. */ |
| 3487 | struct type * |
| 3488 | arch_type (struct gdbarch *gdbarch, |
| 3489 | enum type_code code, int length, char *name) |
| 3490 | { |
| 3491 | struct type *type; |
| 3492 | |
| 3493 | type = alloc_type_arch (gdbarch); |
| 3494 | TYPE_CODE (type) = code; |
| 3495 | TYPE_LENGTH (type) = length; |
| 3496 | |
| 3497 | if (name) |
| 3498 | TYPE_NAME (type) = xstrdup (name); |
| 3499 | |
| 3500 | return type; |
| 3501 | } |
| 3502 | |
| 3503 | /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH. |
| 3504 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 3505 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 3506 | struct type * |
| 3507 | arch_integer_type (struct gdbarch *gdbarch, |
| 3508 | int bit, int unsigned_p, char *name) |
| 3509 | { |
| 3510 | struct type *t; |
| 3511 | |
| 3512 | t = arch_type (gdbarch, TYPE_CODE_INT, bit / TARGET_CHAR_BIT, name); |
| 3513 | if (unsigned_p) |
| 3514 | TYPE_UNSIGNED (t) = 1; |
| 3515 | if (name && strcmp (name, "char") == 0) |
| 3516 | TYPE_NOSIGN (t) = 1; |
| 3517 | |
| 3518 | return t; |
| 3519 | } |
| 3520 | |
| 3521 | /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH. |
| 3522 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 3523 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 3524 | struct type * |
| 3525 | arch_character_type (struct gdbarch *gdbarch, |
| 3526 | int bit, int unsigned_p, char *name) |
| 3527 | { |
| 3528 | struct type *t; |
| 3529 | |
| 3530 | t = arch_type (gdbarch, TYPE_CODE_CHAR, bit / TARGET_CHAR_BIT, name); |
| 3531 | if (unsigned_p) |
| 3532 | TYPE_UNSIGNED (t) = 1; |
| 3533 | |
| 3534 | return t; |
| 3535 | } |
| 3536 | |
| 3537 | /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH. |
| 3538 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 3539 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 3540 | struct type * |
| 3541 | arch_boolean_type (struct gdbarch *gdbarch, |
| 3542 | int bit, int unsigned_p, char *name) |
| 3543 | { |
| 3544 | struct type *t; |
| 3545 | |
| 3546 | t = arch_type (gdbarch, TYPE_CODE_BOOL, bit / TARGET_CHAR_BIT, name); |
| 3547 | if (unsigned_p) |
| 3548 | TYPE_UNSIGNED (t) = 1; |
| 3549 | |
| 3550 | return t; |
| 3551 | } |
| 3552 | |
| 3553 | /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH. |
| 3554 | BIT is the type size in bits; if BIT equals -1, the size is |
| 3555 | determined by the floatformat. NAME is the type name. Set the |
| 3556 | TYPE_FLOATFORMAT from FLOATFORMATS. */ |
| 3557 | struct type * |
| 3558 | arch_float_type (struct gdbarch *gdbarch, |
| 3559 | int bit, char *name, const struct floatformat **floatformats) |
| 3560 | { |
| 3561 | struct type *t; |
| 3562 | |
| 3563 | if (bit == -1) |
| 3564 | { |
| 3565 | gdb_assert (floatformats != NULL); |
| 3566 | gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL); |
| 3567 | bit = floatformats[0]->totalsize; |
| 3568 | } |
| 3569 | gdb_assert (bit >= 0); |
| 3570 | |
| 3571 | t = arch_type (gdbarch, TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, name); |
| 3572 | TYPE_FLOATFORMAT (t) = floatformats; |
| 3573 | return t; |
| 3574 | } |
| 3575 | |
| 3576 | /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH. |
| 3577 | NAME is the type name. TARGET_TYPE is the component float type. */ |
| 3578 | struct type * |
| 3579 | arch_complex_type (struct gdbarch *gdbarch, |
| 3580 | char *name, struct type *target_type) |
| 3581 | { |
| 3582 | struct type *t; |
| 3583 | |
| 3584 | t = arch_type (gdbarch, TYPE_CODE_COMPLEX, |
| 3585 | 2 * TYPE_LENGTH (target_type), name); |
| 3586 | TYPE_TARGET_TYPE (t) = target_type; |
| 3587 | return t; |
| 3588 | } |
| 3589 | |
| 3590 | /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH. |
| 3591 | NAME is the type name. LENGTH is the size of the flag word in bytes. */ |
| 3592 | struct type * |
| 3593 | arch_flags_type (struct gdbarch *gdbarch, char *name, int length) |
| 3594 | { |
| 3595 | int nfields = length * TARGET_CHAR_BIT; |
| 3596 | struct type *type; |
| 3597 | |
| 3598 | type = arch_type (gdbarch, TYPE_CODE_FLAGS, length, name); |
| 3599 | TYPE_UNSIGNED (type) = 1; |
| 3600 | TYPE_NFIELDS (type) = nfields; |
| 3601 | TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field)); |
| 3602 | |
| 3603 | return type; |
| 3604 | } |
| 3605 | |
| 3606 | /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at |
| 3607 | position BITPOS is called NAME. */ |
| 3608 | void |
| 3609 | append_flags_type_flag (struct type *type, int bitpos, char *name) |
| 3610 | { |
| 3611 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS); |
| 3612 | gdb_assert (bitpos < TYPE_NFIELDS (type)); |
| 3613 | gdb_assert (bitpos >= 0); |
| 3614 | |
| 3615 | if (name) |
| 3616 | { |
| 3617 | TYPE_FIELD_NAME (type, bitpos) = xstrdup (name); |
| 3618 | SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), bitpos); |
| 3619 | } |
| 3620 | else |
| 3621 | { |
| 3622 | /* Don't show this field to the user. */ |
| 3623 | SET_FIELD_BITPOS (TYPE_FIELD (type, bitpos), -1); |
| 3624 | } |
| 3625 | } |
| 3626 | |
| 3627 | /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as |
| 3628 | specified by CODE) associated with GDBARCH. NAME is the type name. */ |
| 3629 | struct type * |
| 3630 | arch_composite_type (struct gdbarch *gdbarch, char *name, enum type_code code) |
| 3631 | { |
| 3632 | struct type *t; |
| 3633 | |
| 3634 | gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION); |
| 3635 | t = arch_type (gdbarch, code, 0, NULL); |
| 3636 | TYPE_TAG_NAME (t) = name; |
| 3637 | INIT_CPLUS_SPECIFIC (t); |
| 3638 | return t; |
| 3639 | } |
| 3640 | |
| 3641 | /* Add new field with name NAME and type FIELD to composite type T. |
| 3642 | Do not set the field's position or adjust the type's length; |
| 3643 | the caller should do so. Return the new field. */ |
| 3644 | struct field * |
| 3645 | append_composite_type_field_raw (struct type *t, char *name, |
| 3646 | struct type *field) |
| 3647 | { |
| 3648 | struct field *f; |
| 3649 | |
| 3650 | TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; |
| 3651 | TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t), |
| 3652 | sizeof (struct field) * TYPE_NFIELDS (t)); |
| 3653 | f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]); |
| 3654 | memset (f, 0, sizeof f[0]); |
| 3655 | FIELD_TYPE (f[0]) = field; |
| 3656 | FIELD_NAME (f[0]) = name; |
| 3657 | return f; |
| 3658 | } |
| 3659 | |
| 3660 | /* Add new field with name NAME and type FIELD to composite type T. |
| 3661 | ALIGNMENT (if non-zero) specifies the minimum field alignment. */ |
| 3662 | void |
| 3663 | append_composite_type_field_aligned (struct type *t, char *name, |
| 3664 | struct type *field, int alignment) |
| 3665 | { |
| 3666 | struct field *f = append_composite_type_field_raw (t, name, field); |
| 3667 | |
| 3668 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
| 3669 | { |
| 3670 | if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) |
| 3671 | TYPE_LENGTH (t) = TYPE_LENGTH (field); |
| 3672 | } |
| 3673 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT) |
| 3674 | { |
| 3675 | TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field); |
| 3676 | if (TYPE_NFIELDS (t) > 1) |
| 3677 | { |
| 3678 | SET_FIELD_BITPOS (f[0], |
| 3679 | (FIELD_BITPOS (f[-1]) |
| 3680 | + (TYPE_LENGTH (FIELD_TYPE (f[-1])) |
| 3681 | * TARGET_CHAR_BIT))); |
| 3682 | |
| 3683 | if (alignment) |
| 3684 | { |
| 3685 | int left; |
| 3686 | |
| 3687 | alignment *= TARGET_CHAR_BIT; |
| 3688 | left = FIELD_BITPOS (f[0]) % alignment; |
| 3689 | |
| 3690 | if (left) |
| 3691 | { |
| 3692 | SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left)); |
| 3693 | TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT; |
| 3694 | } |
| 3695 | } |
| 3696 | } |
| 3697 | } |
| 3698 | } |
| 3699 | |
| 3700 | /* Add new field with name NAME and type FIELD to composite type T. */ |
| 3701 | void |
| 3702 | append_composite_type_field (struct type *t, char *name, |
| 3703 | struct type *field) |
| 3704 | { |
| 3705 | append_composite_type_field_aligned (t, name, field, 0); |
| 3706 | } |
| 3707 | |
| 3708 | |
| 3709 | static struct gdbarch_data *gdbtypes_data; |
| 3710 | |
| 3711 | const struct builtin_type * |
| 3712 | builtin_type (struct gdbarch *gdbarch) |
| 3713 | { |
| 3714 | return gdbarch_data (gdbarch, gdbtypes_data); |
| 3715 | } |
| 3716 | |
| 3717 | static void * |
| 3718 | gdbtypes_post_init (struct gdbarch *gdbarch) |
| 3719 | { |
| 3720 | struct builtin_type *builtin_type |
| 3721 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type); |
| 3722 | |
| 3723 | /* Basic types. */ |
| 3724 | builtin_type->builtin_void |
| 3725 | = arch_type (gdbarch, TYPE_CODE_VOID, 1, "void"); |
| 3726 | builtin_type->builtin_char |
| 3727 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, |
| 3728 | !gdbarch_char_signed (gdbarch), "char"); |
| 3729 | builtin_type->builtin_signed_char |
| 3730 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, |
| 3731 | 0, "signed char"); |
| 3732 | builtin_type->builtin_unsigned_char |
| 3733 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, |
| 3734 | 1, "unsigned char"); |
| 3735 | builtin_type->builtin_short |
| 3736 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), |
| 3737 | 0, "short"); |
| 3738 | builtin_type->builtin_unsigned_short |
| 3739 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), |
| 3740 | 1, "unsigned short"); |
| 3741 | builtin_type->builtin_int |
| 3742 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 3743 | 0, "int"); |
| 3744 | builtin_type->builtin_unsigned_int |
| 3745 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 3746 | 1, "unsigned int"); |
| 3747 | builtin_type->builtin_long |
| 3748 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), |
| 3749 | 0, "long"); |
| 3750 | builtin_type->builtin_unsigned_long |
| 3751 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), |
| 3752 | 1, "unsigned long"); |
| 3753 | builtin_type->builtin_long_long |
| 3754 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), |
| 3755 | 0, "long long"); |
| 3756 | builtin_type->builtin_unsigned_long_long |
| 3757 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), |
| 3758 | 1, "unsigned long long"); |
| 3759 | builtin_type->builtin_float |
| 3760 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
| 3761 | "float", gdbarch_float_format (gdbarch)); |
| 3762 | builtin_type->builtin_double |
| 3763 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), |
| 3764 | "double", gdbarch_double_format (gdbarch)); |
| 3765 | builtin_type->builtin_long_double |
| 3766 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
| 3767 | "long double", gdbarch_long_double_format (gdbarch)); |
| 3768 | builtin_type->builtin_complex |
| 3769 | = arch_complex_type (gdbarch, "complex", |
| 3770 | builtin_type->builtin_float); |
| 3771 | builtin_type->builtin_double_complex |
| 3772 | = arch_complex_type (gdbarch, "double complex", |
| 3773 | builtin_type->builtin_double); |
| 3774 | builtin_type->builtin_string |
| 3775 | = arch_type (gdbarch, TYPE_CODE_STRING, 1, "string"); |
| 3776 | builtin_type->builtin_bool |
| 3777 | = arch_type (gdbarch, TYPE_CODE_BOOL, 1, "bool"); |
| 3778 | |
| 3779 | /* The following three are about decimal floating point types, which |
| 3780 | are 32-bits, 64-bits and 128-bits respectively. */ |
| 3781 | builtin_type->builtin_decfloat |
| 3782 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 32 / 8, "_Decimal32"); |
| 3783 | builtin_type->builtin_decdouble |
| 3784 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 64 / 8, "_Decimal64"); |
| 3785 | builtin_type->builtin_declong |
| 3786 | = arch_type (gdbarch, TYPE_CODE_DECFLOAT, 128 / 8, "_Decimal128"); |
| 3787 | |
| 3788 | /* "True" character types. */ |
| 3789 | builtin_type->builtin_true_char |
| 3790 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character"); |
| 3791 | builtin_type->builtin_true_unsigned_char |
| 3792 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character"); |
| 3793 | |
| 3794 | /* Fixed-size integer types. */ |
| 3795 | builtin_type->builtin_int0 |
| 3796 | = arch_integer_type (gdbarch, 0, 0, "int0_t"); |
| 3797 | builtin_type->builtin_int8 |
| 3798 | = arch_integer_type (gdbarch, 8, 0, "int8_t"); |
| 3799 | builtin_type->builtin_uint8 |
| 3800 | = arch_integer_type (gdbarch, 8, 1, "uint8_t"); |
| 3801 | builtin_type->builtin_int16 |
| 3802 | = arch_integer_type (gdbarch, 16, 0, "int16_t"); |
| 3803 | builtin_type->builtin_uint16 |
| 3804 | = arch_integer_type (gdbarch, 16, 1, "uint16_t"); |
| 3805 | builtin_type->builtin_int32 |
| 3806 | = arch_integer_type (gdbarch, 32, 0, "int32_t"); |
| 3807 | builtin_type->builtin_uint32 |
| 3808 | = arch_integer_type (gdbarch, 32, 1, "uint32_t"); |
| 3809 | builtin_type->builtin_int64 |
| 3810 | = arch_integer_type (gdbarch, 64, 0, "int64_t"); |
| 3811 | builtin_type->builtin_uint64 |
| 3812 | = arch_integer_type (gdbarch, 64, 1, "uint64_t"); |
| 3813 | builtin_type->builtin_int128 |
| 3814 | = arch_integer_type (gdbarch, 128, 0, "int128_t"); |
| 3815 | builtin_type->builtin_uint128 |
| 3816 | = arch_integer_type (gdbarch, 128, 1, "uint128_t"); |
| 3817 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |= |
| 3818 | TYPE_INSTANCE_FLAG_NOTTEXT; |
| 3819 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |= |
| 3820 | TYPE_INSTANCE_FLAG_NOTTEXT; |
| 3821 | |
| 3822 | /* Wide character types. */ |
| 3823 | builtin_type->builtin_char16 |
| 3824 | = arch_integer_type (gdbarch, 16, 0, "char16_t"); |
| 3825 | builtin_type->builtin_char32 |
| 3826 | = arch_integer_type (gdbarch, 32, 0, "char32_t"); |
| 3827 | |
| 3828 | |
| 3829 | /* Default data/code pointer types. */ |
| 3830 | builtin_type->builtin_data_ptr |
| 3831 | = lookup_pointer_type (builtin_type->builtin_void); |
| 3832 | builtin_type->builtin_func_ptr |
| 3833 | = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void)); |
| 3834 | builtin_type->builtin_func_func |
| 3835 | = lookup_function_type (builtin_type->builtin_func_ptr); |
| 3836 | |
| 3837 | /* This type represents a GDB internal function. */ |
| 3838 | builtin_type->internal_fn |
| 3839 | = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0, |
| 3840 | "<internal function>"); |
| 3841 | |
| 3842 | return builtin_type; |
| 3843 | } |
| 3844 | |
| 3845 | |
| 3846 | /* This set of objfile-based types is intended to be used by symbol |
| 3847 | readers as basic types. */ |
| 3848 | |
| 3849 | static const struct objfile_data *objfile_type_data; |
| 3850 | |
| 3851 | const struct objfile_type * |
| 3852 | objfile_type (struct objfile *objfile) |
| 3853 | { |
| 3854 | struct gdbarch *gdbarch; |
| 3855 | struct objfile_type *objfile_type |
| 3856 | = objfile_data (objfile, objfile_type_data); |
| 3857 | |
| 3858 | if (objfile_type) |
| 3859 | return objfile_type; |
| 3860 | |
| 3861 | objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack, |
| 3862 | 1, struct objfile_type); |
| 3863 | |
| 3864 | /* Use the objfile architecture to determine basic type properties. */ |
| 3865 | gdbarch = get_objfile_arch (objfile); |
| 3866 | |
| 3867 | /* Basic types. */ |
| 3868 | objfile_type->builtin_void |
| 3869 | = init_type (TYPE_CODE_VOID, 1, |
| 3870 | 0, |
| 3871 | "void", objfile); |
| 3872 | |
| 3873 | objfile_type->builtin_char |
| 3874 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3875 | (TYPE_FLAG_NOSIGN |
| 3876 | | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)), |
| 3877 | "char", objfile); |
| 3878 | objfile_type->builtin_signed_char |
| 3879 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3880 | 0, |
| 3881 | "signed char", objfile); |
| 3882 | objfile_type->builtin_unsigned_char |
| 3883 | = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3884 | TYPE_FLAG_UNSIGNED, |
| 3885 | "unsigned char", objfile); |
| 3886 | objfile_type->builtin_short |
| 3887 | = init_type (TYPE_CODE_INT, |
| 3888 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3889 | 0, "short", objfile); |
| 3890 | objfile_type->builtin_unsigned_short |
| 3891 | = init_type (TYPE_CODE_INT, |
| 3892 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3893 | TYPE_FLAG_UNSIGNED, "unsigned short", objfile); |
| 3894 | objfile_type->builtin_int |
| 3895 | = init_type (TYPE_CODE_INT, |
| 3896 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3897 | 0, "int", objfile); |
| 3898 | objfile_type->builtin_unsigned_int |
| 3899 | = init_type (TYPE_CODE_INT, |
| 3900 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3901 | TYPE_FLAG_UNSIGNED, "unsigned int", objfile); |
| 3902 | objfile_type->builtin_long |
| 3903 | = init_type (TYPE_CODE_INT, |
| 3904 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3905 | 0, "long", objfile); |
| 3906 | objfile_type->builtin_unsigned_long |
| 3907 | = init_type (TYPE_CODE_INT, |
| 3908 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3909 | TYPE_FLAG_UNSIGNED, "unsigned long", objfile); |
| 3910 | objfile_type->builtin_long_long |
| 3911 | = init_type (TYPE_CODE_INT, |
| 3912 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3913 | 0, "long long", objfile); |
| 3914 | objfile_type->builtin_unsigned_long_long |
| 3915 | = init_type (TYPE_CODE_INT, |
| 3916 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3917 | TYPE_FLAG_UNSIGNED, "unsigned long long", objfile); |
| 3918 | |
| 3919 | objfile_type->builtin_float |
| 3920 | = init_type (TYPE_CODE_FLT, |
| 3921 | gdbarch_float_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3922 | 0, "float", objfile); |
| 3923 | TYPE_FLOATFORMAT (objfile_type->builtin_float) |
| 3924 | = gdbarch_float_format (gdbarch); |
| 3925 | objfile_type->builtin_double |
| 3926 | = init_type (TYPE_CODE_FLT, |
| 3927 | gdbarch_double_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3928 | 0, "double", objfile); |
| 3929 | TYPE_FLOATFORMAT (objfile_type->builtin_double) |
| 3930 | = gdbarch_double_format (gdbarch); |
| 3931 | objfile_type->builtin_long_double |
| 3932 | = init_type (TYPE_CODE_FLT, |
| 3933 | gdbarch_long_double_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3934 | 0, "long double", objfile); |
| 3935 | TYPE_FLOATFORMAT (objfile_type->builtin_long_double) |
| 3936 | = gdbarch_long_double_format (gdbarch); |
| 3937 | |
| 3938 | /* This type represents a type that was unrecognized in symbol read-in. */ |
| 3939 | objfile_type->builtin_error |
| 3940 | = init_type (TYPE_CODE_ERROR, 0, 0, "<unknown type>", objfile); |
| 3941 | |
| 3942 | /* The following set of types is used for symbols with no |
| 3943 | debug information. */ |
| 3944 | objfile_type->nodebug_text_symbol |
| 3945 | = init_type (TYPE_CODE_FUNC, 1, 0, |
| 3946 | "<text variable, no debug info>", objfile); |
| 3947 | TYPE_TARGET_TYPE (objfile_type->nodebug_text_symbol) |
| 3948 | = objfile_type->builtin_int; |
| 3949 | objfile_type->nodebug_text_gnu_ifunc_symbol |
| 3950 | = init_type (TYPE_CODE_FUNC, 1, TYPE_FLAG_GNU_IFUNC, |
| 3951 | "<text gnu-indirect-function variable, no debug info>", |
| 3952 | objfile); |
| 3953 | TYPE_TARGET_TYPE (objfile_type->nodebug_text_gnu_ifunc_symbol) |
| 3954 | = objfile_type->nodebug_text_symbol; |
| 3955 | objfile_type->nodebug_got_plt_symbol |
| 3956 | = init_type (TYPE_CODE_PTR, gdbarch_addr_bit (gdbarch) / 8, 0, |
| 3957 | "<text from jump slot in .got.plt, no debug info>", |
| 3958 | objfile); |
| 3959 | TYPE_TARGET_TYPE (objfile_type->nodebug_got_plt_symbol) |
| 3960 | = objfile_type->nodebug_text_symbol; |
| 3961 | objfile_type->nodebug_data_symbol |
| 3962 | = init_type (TYPE_CODE_INT, |
| 3963 | gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0, |
| 3964 | "<data variable, no debug info>", objfile); |
| 3965 | objfile_type->nodebug_unknown_symbol |
| 3966 | = init_type (TYPE_CODE_INT, 1, 0, |
| 3967 | "<variable (not text or data), no debug info>", objfile); |
| 3968 | objfile_type->nodebug_tls_symbol |
| 3969 | = init_type (TYPE_CODE_INT, |
| 3970 | gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0, |
| 3971 | "<thread local variable, no debug info>", objfile); |
| 3972 | |
| 3973 | /* NOTE: on some targets, addresses and pointers are not necessarily |
| 3974 | the same --- for example, on the D10V, pointers are 16 bits long, |
| 3975 | but addresses are 32 bits long. See doc/gdbint.texinfo, |
| 3976 | ``Pointers Are Not Always Addresses''. |
| 3977 | |
| 3978 | The upshot is: |
| 3979 | - gdb's `struct type' always describes the target's |
| 3980 | representation. |
| 3981 | - gdb's `struct value' objects should always hold values in |
| 3982 | target form. |
| 3983 | - gdb's CORE_ADDR values are addresses in the unified virtual |
| 3984 | address space that the assembler and linker work with. Thus, |
| 3985 | since target_read_memory takes a CORE_ADDR as an argument, it |
| 3986 | can access any memory on the target, even if the processor has |
| 3987 | separate code and data address spaces. |
| 3988 | |
| 3989 | So, for example: |
| 3990 | - If v is a value holding a D10V code pointer, its contents are |
| 3991 | in target form: a big-endian address left-shifted two bits. |
| 3992 | - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as |
| 3993 | sizeof (void *) == 2 on the target. |
| 3994 | |
| 3995 | In this context, objfile_type->builtin_core_addr is a bit odd: |
| 3996 | it's a target type for a value the target will never see. It's |
| 3997 | only used to hold the values of (typeless) linker symbols, which |
| 3998 | are indeed in the unified virtual address space. */ |
| 3999 | |
| 4000 | objfile_type->builtin_core_addr |
| 4001 | = init_type (TYPE_CODE_INT, |
| 4002 | gdbarch_addr_bit (gdbarch) / 8, |
| 4003 | TYPE_FLAG_UNSIGNED, "__CORE_ADDR", objfile); |
| 4004 | |
| 4005 | set_objfile_data (objfile, objfile_type_data, objfile_type); |
| 4006 | return objfile_type; |
| 4007 | } |
| 4008 | |
| 4009 | |
| 4010 | extern void _initialize_gdbtypes (void); |
| 4011 | void |
| 4012 | _initialize_gdbtypes (void) |
| 4013 | { |
| 4014 | gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init); |
| 4015 | objfile_type_data = register_objfile_data (); |
| 4016 | |
| 4017 | add_setshow_zinteger_cmd ("overload", no_class, &overload_debug, |
| 4018 | _("Set debugging of C++ overloading."), |
| 4019 | _("Show debugging of C++ overloading."), |
| 4020 | _("When enabled, ranking of the " |
| 4021 | "functions is displayed."), |
| 4022 | NULL, |
| 4023 | show_overload_debug, |
| 4024 | &setdebuglist, &showdebuglist); |
| 4025 | |
| 4026 | /* Add user knob for controlling resolution of opaque types. */ |
| 4027 | add_setshow_boolean_cmd ("opaque-type-resolution", class_support, |
| 4028 | &opaque_type_resolution, |
| 4029 | _("Set resolution of opaque struct/class/union" |
| 4030 | " types (if set before loading symbols)."), |
| 4031 | _("Show resolution of opaque struct/class/union" |
| 4032 | " types (if set before loading symbols)."), |
| 4033 | NULL, NULL, |
| 4034 | show_opaque_type_resolution, |
| 4035 | &setlist, &showlist); |
| 4036 | } |