| 1 | /* Support routines for manipulating internal types for GDB. |
| 2 | |
| 3 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, |
| 4 | 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
| 5 | |
| 6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
| 7 | |
| 8 | This file is part of GDB. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "gdb_string.h" |
| 25 | #include "bfd.h" |
| 26 | #include "symtab.h" |
| 27 | #include "symfile.h" |
| 28 | #include "objfiles.h" |
| 29 | #include "gdbtypes.h" |
| 30 | #include "expression.h" |
| 31 | #include "language.h" |
| 32 | #include "target.h" |
| 33 | #include "value.h" |
| 34 | #include "demangle.h" |
| 35 | #include "complaints.h" |
| 36 | #include "gdbcmd.h" |
| 37 | #include "wrapper.h" |
| 38 | #include "cp-abi.h" |
| 39 | #include "gdb_assert.h" |
| 40 | #include "hashtab.h" |
| 41 | |
| 42 | /* These variables point to the objects |
| 43 | representing the predefined C data types. */ |
| 44 | |
| 45 | struct type *builtin_type_int0; |
| 46 | struct type *builtin_type_int8; |
| 47 | struct type *builtin_type_uint8; |
| 48 | struct type *builtin_type_int16; |
| 49 | struct type *builtin_type_uint16; |
| 50 | struct type *builtin_type_int32; |
| 51 | struct type *builtin_type_uint32; |
| 52 | struct type *builtin_type_int64; |
| 53 | struct type *builtin_type_uint64; |
| 54 | struct type *builtin_type_int128; |
| 55 | struct type *builtin_type_uint128; |
| 56 | |
| 57 | /* Floatformat pairs. */ |
| 58 | const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = { |
| 59 | &floatformat_ieee_single_big, |
| 60 | &floatformat_ieee_single_little |
| 61 | }; |
| 62 | const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = { |
| 63 | &floatformat_ieee_double_big, |
| 64 | &floatformat_ieee_double_little |
| 65 | }; |
| 66 | const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = { |
| 67 | &floatformat_ieee_double_big, |
| 68 | &floatformat_ieee_double_littlebyte_bigword |
| 69 | }; |
| 70 | const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = { |
| 71 | &floatformat_i387_ext, |
| 72 | &floatformat_i387_ext |
| 73 | }; |
| 74 | const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = { |
| 75 | &floatformat_m68881_ext, |
| 76 | &floatformat_m68881_ext |
| 77 | }; |
| 78 | const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = { |
| 79 | &floatformat_arm_ext_big, |
| 80 | &floatformat_arm_ext_littlebyte_bigword |
| 81 | }; |
| 82 | const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = { |
| 83 | &floatformat_ia64_spill_big, |
| 84 | &floatformat_ia64_spill_little |
| 85 | }; |
| 86 | const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = { |
| 87 | &floatformat_ia64_quad_big, |
| 88 | &floatformat_ia64_quad_little |
| 89 | }; |
| 90 | const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = { |
| 91 | &floatformat_vax_f, |
| 92 | &floatformat_vax_f |
| 93 | }; |
| 94 | const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = { |
| 95 | &floatformat_vax_d, |
| 96 | &floatformat_vax_d |
| 97 | }; |
| 98 | const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = { |
| 99 | &floatformat_ibm_long_double, |
| 100 | &floatformat_ibm_long_double |
| 101 | }; |
| 102 | |
| 103 | struct type *builtin_type_ieee_single; |
| 104 | struct type *builtin_type_ieee_double; |
| 105 | struct type *builtin_type_i387_ext; |
| 106 | struct type *builtin_type_m68881_ext; |
| 107 | struct type *builtin_type_arm_ext; |
| 108 | struct type *builtin_type_ia64_spill; |
| 109 | struct type *builtin_type_ia64_quad; |
| 110 | |
| 111 | /* Platform-neutral void type. */ |
| 112 | struct type *builtin_type_void; |
| 113 | |
| 114 | /* Platform-neutral character types. */ |
| 115 | struct type *builtin_type_true_char; |
| 116 | struct type *builtin_type_true_unsigned_char; |
| 117 | |
| 118 | |
| 119 | int opaque_type_resolution = 1; |
| 120 | static void |
| 121 | show_opaque_type_resolution (struct ui_file *file, int from_tty, |
| 122 | struct cmd_list_element *c, |
| 123 | const char *value) |
| 124 | { |
| 125 | fprintf_filtered (file, _("\ |
| 126 | Resolution of opaque struct/class/union types (if set before loading symbols) is %s.\n"), |
| 127 | value); |
| 128 | } |
| 129 | |
| 130 | int overload_debug = 0; |
| 131 | static void |
| 132 | show_overload_debug (struct ui_file *file, int from_tty, |
| 133 | struct cmd_list_element *c, const char *value) |
| 134 | { |
| 135 | fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"), |
| 136 | value); |
| 137 | } |
| 138 | |
| 139 | struct extra |
| 140 | { |
| 141 | char str[128]; |
| 142 | int len; |
| 143 | }; /* Maximum extension is 128! FIXME */ |
| 144 | |
| 145 | static void print_bit_vector (B_TYPE *, int); |
| 146 | static void print_arg_types (struct field *, int, int); |
| 147 | static void dump_fn_fieldlists (struct type *, int); |
| 148 | static void print_cplus_stuff (struct type *, int); |
| 149 | |
| 150 | |
| 151 | /* Alloc a new type structure and fill it with some defaults. If |
| 152 | OBJFILE is non-NULL, then allocate the space for the type structure |
| 153 | in that objfile's objfile_obstack. Otherwise allocate the new type |
| 154 | structure by xmalloc () (for permanent types). */ |
| 155 | |
| 156 | struct type * |
| 157 | alloc_type (struct objfile *objfile) |
| 158 | { |
| 159 | struct type *type; |
| 160 | |
| 161 | /* Alloc the structure and start off with all fields zeroed. */ |
| 162 | |
| 163 | if (objfile == NULL) |
| 164 | { |
| 165 | type = XZALLOC (struct type); |
| 166 | TYPE_MAIN_TYPE (type) = XZALLOC (struct main_type); |
| 167 | } |
| 168 | else |
| 169 | { |
| 170 | type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type); |
| 171 | TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
| 172 | struct main_type); |
| 173 | OBJSTAT (objfile, n_types++); |
| 174 | } |
| 175 | |
| 176 | /* Initialize the fields that might not be zero. */ |
| 177 | |
| 178 | TYPE_CODE (type) = TYPE_CODE_UNDEF; |
| 179 | TYPE_OBJFILE (type) = objfile; |
| 180 | TYPE_VPTR_FIELDNO (type) = -1; |
| 181 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
| 182 | |
| 183 | return type; |
| 184 | } |
| 185 | |
| 186 | /* Alloc a new type instance structure, fill it with some defaults, |
| 187 | and point it at OLDTYPE. Allocate the new type instance from the |
| 188 | same place as OLDTYPE. */ |
| 189 | |
| 190 | static struct type * |
| 191 | alloc_type_instance (struct type *oldtype) |
| 192 | { |
| 193 | struct type *type; |
| 194 | |
| 195 | /* Allocate the structure. */ |
| 196 | |
| 197 | if (TYPE_OBJFILE (oldtype) == NULL) |
| 198 | type = XZALLOC (struct type); |
| 199 | else |
| 200 | type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack, |
| 201 | struct type); |
| 202 | |
| 203 | TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype); |
| 204 | |
| 205 | TYPE_CHAIN (type) = type; /* Chain back to itself for now. */ |
| 206 | |
| 207 | return type; |
| 208 | } |
| 209 | |
| 210 | /* Clear all remnants of the previous type at TYPE, in preparation for |
| 211 | replacing it with something else. */ |
| 212 | static void |
| 213 | smash_type (struct type *type) |
| 214 | { |
| 215 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); |
| 216 | |
| 217 | /* For now, delete the rings. */ |
| 218 | TYPE_CHAIN (type) = type; |
| 219 | |
| 220 | /* For now, leave the pointer/reference types alone. */ |
| 221 | } |
| 222 | |
| 223 | /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points |
| 224 | to a pointer to memory where the pointer type should be stored. |
| 225 | If *TYPEPTR is zero, update it to point to the pointer type we return. |
| 226 | We allocate new memory if needed. */ |
| 227 | |
| 228 | struct type * |
| 229 | make_pointer_type (struct type *type, struct type **typeptr) |
| 230 | { |
| 231 | struct type *ntype; /* New type */ |
| 232 | struct objfile *objfile; |
| 233 | struct type *chain; |
| 234 | |
| 235 | ntype = TYPE_POINTER_TYPE (type); |
| 236 | |
| 237 | if (ntype) |
| 238 | { |
| 239 | if (typeptr == 0) |
| 240 | return ntype; /* Don't care about alloc, |
| 241 | and have new type. */ |
| 242 | else if (*typeptr == 0) |
| 243 | { |
| 244 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
| 245 | return ntype; |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 250 | { |
| 251 | ntype = alloc_type (TYPE_OBJFILE (type)); |
| 252 | if (typeptr) |
| 253 | *typeptr = ntype; |
| 254 | } |
| 255 | else /* We have storage, but need to reset it. */ |
| 256 | { |
| 257 | ntype = *typeptr; |
| 258 | objfile = TYPE_OBJFILE (ntype); |
| 259 | chain = TYPE_CHAIN (ntype); |
| 260 | smash_type (ntype); |
| 261 | TYPE_CHAIN (ntype) = chain; |
| 262 | TYPE_OBJFILE (ntype) = objfile; |
| 263 | } |
| 264 | |
| 265 | TYPE_TARGET_TYPE (ntype) = type; |
| 266 | TYPE_POINTER_TYPE (type) = ntype; |
| 267 | |
| 268 | /* FIXME! Assume the machine has only one representation for |
| 269 | pointers! */ |
| 270 | |
| 271 | TYPE_LENGTH (ntype) = |
| 272 | gdbarch_ptr_bit (current_gdbarch) / TARGET_CHAR_BIT; |
| 273 | TYPE_CODE (ntype) = TYPE_CODE_PTR; |
| 274 | |
| 275 | /* Mark pointers as unsigned. The target converts between pointers |
| 276 | and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and |
| 277 | gdbarch_address_to_pointer. */ |
| 278 | TYPE_UNSIGNED (ntype) = 1; |
| 279 | |
| 280 | if (!TYPE_POINTER_TYPE (type)) /* Remember it, if don't have one. */ |
| 281 | TYPE_POINTER_TYPE (type) = ntype; |
| 282 | |
| 283 | /* Update the length of all the other variants of this type. */ |
| 284 | chain = TYPE_CHAIN (ntype); |
| 285 | while (chain != ntype) |
| 286 | { |
| 287 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); |
| 288 | chain = TYPE_CHAIN (chain); |
| 289 | } |
| 290 | |
| 291 | return ntype; |
| 292 | } |
| 293 | |
| 294 | /* Given a type TYPE, return a type of pointers to that type. |
| 295 | May need to construct such a type if this is the first use. */ |
| 296 | |
| 297 | struct type * |
| 298 | lookup_pointer_type (struct type *type) |
| 299 | { |
| 300 | return make_pointer_type (type, (struct type **) 0); |
| 301 | } |
| 302 | |
| 303 | /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, |
| 304 | points to a pointer to memory where the reference type should be |
| 305 | stored. If *TYPEPTR is zero, update it to point to the reference |
| 306 | type we return. We allocate new memory if needed. */ |
| 307 | |
| 308 | struct type * |
| 309 | make_reference_type (struct type *type, struct type **typeptr) |
| 310 | { |
| 311 | struct type *ntype; /* New type */ |
| 312 | struct objfile *objfile; |
| 313 | struct type *chain; |
| 314 | |
| 315 | ntype = TYPE_REFERENCE_TYPE (type); |
| 316 | |
| 317 | if (ntype) |
| 318 | { |
| 319 | if (typeptr == 0) |
| 320 | return ntype; /* Don't care about alloc, |
| 321 | and have new type. */ |
| 322 | else if (*typeptr == 0) |
| 323 | { |
| 324 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
| 325 | return ntype; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 330 | { |
| 331 | ntype = alloc_type (TYPE_OBJFILE (type)); |
| 332 | if (typeptr) |
| 333 | *typeptr = ntype; |
| 334 | } |
| 335 | else /* We have storage, but need to reset it. */ |
| 336 | { |
| 337 | ntype = *typeptr; |
| 338 | objfile = TYPE_OBJFILE (ntype); |
| 339 | chain = TYPE_CHAIN (ntype); |
| 340 | smash_type (ntype); |
| 341 | TYPE_CHAIN (ntype) = chain; |
| 342 | TYPE_OBJFILE (ntype) = objfile; |
| 343 | } |
| 344 | |
| 345 | TYPE_TARGET_TYPE (ntype) = type; |
| 346 | TYPE_REFERENCE_TYPE (type) = ntype; |
| 347 | |
| 348 | /* FIXME! Assume the machine has only one representation for |
| 349 | references, and that it matches the (only) representation for |
| 350 | pointers! */ |
| 351 | |
| 352 | TYPE_LENGTH (ntype) = gdbarch_ptr_bit (current_gdbarch) / TARGET_CHAR_BIT; |
| 353 | TYPE_CODE (ntype) = TYPE_CODE_REF; |
| 354 | |
| 355 | if (!TYPE_REFERENCE_TYPE (type)) /* Remember it, if don't have one. */ |
| 356 | TYPE_REFERENCE_TYPE (type) = ntype; |
| 357 | |
| 358 | /* Update the length of all the other variants of this type. */ |
| 359 | chain = TYPE_CHAIN (ntype); |
| 360 | while (chain != ntype) |
| 361 | { |
| 362 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); |
| 363 | chain = TYPE_CHAIN (chain); |
| 364 | } |
| 365 | |
| 366 | return ntype; |
| 367 | } |
| 368 | |
| 369 | /* Same as above, but caller doesn't care about memory allocation |
| 370 | details. */ |
| 371 | |
| 372 | struct type * |
| 373 | lookup_reference_type (struct type *type) |
| 374 | { |
| 375 | return make_reference_type (type, (struct type **) 0); |
| 376 | } |
| 377 | |
| 378 | /* Lookup a function type that returns type TYPE. TYPEPTR, if |
| 379 | nonzero, points to a pointer to memory where the function type |
| 380 | should be stored. If *TYPEPTR is zero, update it to point to the |
| 381 | function type we return. We allocate new memory from OBJFILE if needed; use |
| 382 | NULL for permanent types. */ |
| 383 | |
| 384 | struct type * |
| 385 | make_function_type (struct type *type, struct type **typeptr, |
| 386 | struct objfile *objfile) |
| 387 | { |
| 388 | struct type *ntype; /* New type */ |
| 389 | |
| 390 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 391 | { |
| 392 | ntype = alloc_type (objfile); |
| 393 | if (typeptr) |
| 394 | *typeptr = ntype; |
| 395 | } |
| 396 | else /* We have storage, but need to reset it. */ |
| 397 | { |
| 398 | ntype = *typeptr; |
| 399 | smash_type (ntype); |
| 400 | TYPE_OBJFILE (ntype) = objfile; |
| 401 | } |
| 402 | |
| 403 | TYPE_TARGET_TYPE (ntype) = type; |
| 404 | |
| 405 | TYPE_LENGTH (ntype) = 1; |
| 406 | TYPE_CODE (ntype) = TYPE_CODE_FUNC; |
| 407 | |
| 408 | return ntype; |
| 409 | } |
| 410 | |
| 411 | |
| 412 | /* Given a type TYPE, return a type of functions that return that type. |
| 413 | May need to construct such a type if this is the first use. */ |
| 414 | |
| 415 | struct type * |
| 416 | lookup_function_type (struct type *type) |
| 417 | { |
| 418 | return make_function_type (type, (struct type **) 0, TYPE_OBJFILE (type)); |
| 419 | } |
| 420 | |
| 421 | /* Identify address space identifier by name -- |
| 422 | return the integer flag defined in gdbtypes.h. */ |
| 423 | extern int |
| 424 | address_space_name_to_int (char *space_identifier) |
| 425 | { |
| 426 | struct gdbarch *gdbarch = current_gdbarch; |
| 427 | int type_flags; |
| 428 | /* Check for known address space delimiters. */ |
| 429 | if (!strcmp (space_identifier, "code")) |
| 430 | return TYPE_INSTANCE_FLAG_CODE_SPACE; |
| 431 | else if (!strcmp (space_identifier, "data")) |
| 432 | return TYPE_INSTANCE_FLAG_DATA_SPACE; |
| 433 | else if (gdbarch_address_class_name_to_type_flags_p (gdbarch) |
| 434 | && gdbarch_address_class_name_to_type_flags (gdbarch, |
| 435 | space_identifier, |
| 436 | &type_flags)) |
| 437 | return type_flags; |
| 438 | else |
| 439 | error (_("Unknown address space specifier: \"%s\""), space_identifier); |
| 440 | } |
| 441 | |
| 442 | /* Identify address space identifier by integer flag as defined in |
| 443 | gdbtypes.h -- return the string version of the adress space name. */ |
| 444 | |
| 445 | const char * |
| 446 | address_space_int_to_name (int space_flag) |
| 447 | { |
| 448 | struct gdbarch *gdbarch = current_gdbarch; |
| 449 | if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE) |
| 450 | return "code"; |
| 451 | else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE) |
| 452 | return "data"; |
| 453 | else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
| 454 | && gdbarch_address_class_type_flags_to_name_p (gdbarch)) |
| 455 | return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag); |
| 456 | else |
| 457 | return NULL; |
| 458 | } |
| 459 | |
| 460 | /* Create a new type with instance flags NEW_FLAGS, based on TYPE. |
| 461 | |
| 462 | If STORAGE is non-NULL, create the new type instance there. |
| 463 | STORAGE must be in the same obstack as TYPE. */ |
| 464 | |
| 465 | static struct type * |
| 466 | make_qualified_type (struct type *type, int new_flags, |
| 467 | struct type *storage) |
| 468 | { |
| 469 | struct type *ntype; |
| 470 | |
| 471 | ntype = type; |
| 472 | do |
| 473 | { |
| 474 | if (TYPE_INSTANCE_FLAGS (ntype) == new_flags) |
| 475 | return ntype; |
| 476 | ntype = TYPE_CHAIN (ntype); |
| 477 | } |
| 478 | while (ntype != type); |
| 479 | |
| 480 | /* Create a new type instance. */ |
| 481 | if (storage == NULL) |
| 482 | ntype = alloc_type_instance (type); |
| 483 | else |
| 484 | { |
| 485 | /* If STORAGE was provided, it had better be in the same objfile |
| 486 | as TYPE. Otherwise, we can't link it into TYPE's cv chain: |
| 487 | if one objfile is freed and the other kept, we'd have |
| 488 | dangling pointers. */ |
| 489 | gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage)); |
| 490 | |
| 491 | ntype = storage; |
| 492 | TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type); |
| 493 | TYPE_CHAIN (ntype) = ntype; |
| 494 | } |
| 495 | |
| 496 | /* Pointers or references to the original type are not relevant to |
| 497 | the new type. */ |
| 498 | TYPE_POINTER_TYPE (ntype) = (struct type *) 0; |
| 499 | TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; |
| 500 | |
| 501 | /* Chain the new qualified type to the old type. */ |
| 502 | TYPE_CHAIN (ntype) = TYPE_CHAIN (type); |
| 503 | TYPE_CHAIN (type) = ntype; |
| 504 | |
| 505 | /* Now set the instance flags and return the new type. */ |
| 506 | TYPE_INSTANCE_FLAGS (ntype) = new_flags; |
| 507 | |
| 508 | /* Set length of new type to that of the original type. */ |
| 509 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); |
| 510 | |
| 511 | return ntype; |
| 512 | } |
| 513 | |
| 514 | /* Make an address-space-delimited variant of a type -- a type that |
| 515 | is identical to the one supplied except that it has an address |
| 516 | space attribute attached to it (such as "code" or "data"). |
| 517 | |
| 518 | The space attributes "code" and "data" are for Harvard |
| 519 | architectures. The address space attributes are for architectures |
| 520 | which have alternately sized pointers or pointers with alternate |
| 521 | representations. */ |
| 522 | |
| 523 | struct type * |
| 524 | make_type_with_address_space (struct type *type, int space_flag) |
| 525 | { |
| 526 | struct type *ntype; |
| 527 | int new_flags = ((TYPE_INSTANCE_FLAGS (type) |
| 528 | & ~(TYPE_INSTANCE_FLAG_CODE_SPACE |
| 529 | | TYPE_INSTANCE_FLAG_DATA_SPACE |
| 530 | | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)) |
| 531 | | space_flag); |
| 532 | |
| 533 | return make_qualified_type (type, new_flags, NULL); |
| 534 | } |
| 535 | |
| 536 | /* Make a "c-v" variant of a type -- a type that is identical to the |
| 537 | one supplied except that it may have const or volatile attributes |
| 538 | CNST is a flag for setting the const attribute |
| 539 | VOLTL is a flag for setting the volatile attribute |
| 540 | TYPE is the base type whose variant we are creating. |
| 541 | |
| 542 | If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to |
| 543 | storage to hold the new qualified type; *TYPEPTR and TYPE must be |
| 544 | in the same objfile. Otherwise, allocate fresh memory for the new |
| 545 | type whereever TYPE lives. If TYPEPTR is non-zero, set it to the |
| 546 | new type we construct. */ |
| 547 | struct type * |
| 548 | make_cv_type (int cnst, int voltl, |
| 549 | struct type *type, |
| 550 | struct type **typeptr) |
| 551 | { |
| 552 | struct type *ntype; /* New type */ |
| 553 | struct type *tmp_type = type; /* tmp type */ |
| 554 | struct objfile *objfile; |
| 555 | |
| 556 | int new_flags = (TYPE_INSTANCE_FLAGS (type) |
| 557 | & ~(TYPE_INSTANCE_FLAG_CONST | TYPE_INSTANCE_FLAG_VOLATILE)); |
| 558 | |
| 559 | if (cnst) |
| 560 | new_flags |= TYPE_INSTANCE_FLAG_CONST; |
| 561 | |
| 562 | if (voltl) |
| 563 | new_flags |= TYPE_INSTANCE_FLAG_VOLATILE; |
| 564 | |
| 565 | if (typeptr && *typeptr != NULL) |
| 566 | { |
| 567 | /* TYPE and *TYPEPTR must be in the same objfile. We can't have |
| 568 | a C-V variant chain that threads across objfiles: if one |
| 569 | objfile gets freed, then the other has a broken C-V chain. |
| 570 | |
| 571 | This code used to try to copy over the main type from TYPE to |
| 572 | *TYPEPTR if they were in different objfiles, but that's |
| 573 | wrong, too: TYPE may have a field list or member function |
| 574 | lists, which refer to types of their own, etc. etc. The |
| 575 | whole shebang would need to be copied over recursively; you |
| 576 | can't have inter-objfile pointers. The only thing to do is |
| 577 | to leave stub types as stub types, and look them up afresh by |
| 578 | name each time you encounter them. */ |
| 579 | gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type)); |
| 580 | } |
| 581 | |
| 582 | ntype = make_qualified_type (type, new_flags, |
| 583 | typeptr ? *typeptr : NULL); |
| 584 | |
| 585 | if (typeptr != NULL) |
| 586 | *typeptr = ntype; |
| 587 | |
| 588 | return ntype; |
| 589 | } |
| 590 | |
| 591 | /* Replace the contents of ntype with the type *type. This changes the |
| 592 | contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus |
| 593 | the changes are propogated to all types in the TYPE_CHAIN. |
| 594 | |
| 595 | In order to build recursive types, it's inevitable that we'll need |
| 596 | to update types in place --- but this sort of indiscriminate |
| 597 | smashing is ugly, and needs to be replaced with something more |
| 598 | controlled. TYPE_MAIN_TYPE is a step in this direction; it's not |
| 599 | clear if more steps are needed. */ |
| 600 | void |
| 601 | replace_type (struct type *ntype, struct type *type) |
| 602 | { |
| 603 | struct type *chain; |
| 604 | |
| 605 | /* These two types had better be in the same objfile. Otherwise, |
| 606 | the assignment of one type's main type structure to the other |
| 607 | will produce a type with references to objects (names; field |
| 608 | lists; etc.) allocated on an objfile other than its own. */ |
| 609 | gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (ntype)); |
| 610 | |
| 611 | *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type); |
| 612 | |
| 613 | /* The type length is not a part of the main type. Update it for |
| 614 | each type on the variant chain. */ |
| 615 | chain = ntype; |
| 616 | do |
| 617 | { |
| 618 | /* Assert that this element of the chain has no address-class bits |
| 619 | set in its flags. Such type variants might have type lengths |
| 620 | which are supposed to be different from the non-address-class |
| 621 | variants. This assertion shouldn't ever be triggered because |
| 622 | symbol readers which do construct address-class variants don't |
| 623 | call replace_type(). */ |
| 624 | gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0); |
| 625 | |
| 626 | TYPE_LENGTH (chain) = TYPE_LENGTH (type); |
| 627 | chain = TYPE_CHAIN (chain); |
| 628 | } |
| 629 | while (ntype != chain); |
| 630 | |
| 631 | /* Assert that the two types have equivalent instance qualifiers. |
| 632 | This should be true for at least all of our debug readers. */ |
| 633 | gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type)); |
| 634 | } |
| 635 | |
| 636 | /* Implement direct support for MEMBER_TYPE in GNU C++. |
| 637 | May need to construct such a type if this is the first use. |
| 638 | The TYPE is the type of the member. The DOMAIN is the type |
| 639 | of the aggregate that the member belongs to. */ |
| 640 | |
| 641 | struct type * |
| 642 | lookup_memberptr_type (struct type *type, struct type *domain) |
| 643 | { |
| 644 | struct type *mtype; |
| 645 | |
| 646 | mtype = alloc_type (TYPE_OBJFILE (type)); |
| 647 | smash_to_memberptr_type (mtype, domain, type); |
| 648 | return mtype; |
| 649 | } |
| 650 | |
| 651 | /* Return a pointer-to-method type, for a method of type TO_TYPE. */ |
| 652 | |
| 653 | struct type * |
| 654 | lookup_methodptr_type (struct type *to_type) |
| 655 | { |
| 656 | struct type *mtype; |
| 657 | |
| 658 | mtype = alloc_type (TYPE_OBJFILE (to_type)); |
| 659 | TYPE_TARGET_TYPE (mtype) = to_type; |
| 660 | TYPE_DOMAIN_TYPE (mtype) = TYPE_DOMAIN_TYPE (to_type); |
| 661 | TYPE_LENGTH (mtype) = cplus_method_ptr_size (to_type); |
| 662 | TYPE_CODE (mtype) = TYPE_CODE_METHODPTR; |
| 663 | return mtype; |
| 664 | } |
| 665 | |
| 666 | /* Allocate a stub method whose return type is TYPE. This apparently |
| 667 | happens for speed of symbol reading, since parsing out the |
| 668 | arguments to the method is cpu-intensive, the way we are doing it. |
| 669 | So, we will fill in arguments later. This always returns a fresh |
| 670 | type. */ |
| 671 | |
| 672 | struct type * |
| 673 | allocate_stub_method (struct type *type) |
| 674 | { |
| 675 | struct type *mtype; |
| 676 | |
| 677 | mtype = init_type (TYPE_CODE_METHOD, 1, TYPE_FLAG_STUB, NULL, |
| 678 | TYPE_OBJFILE (type)); |
| 679 | TYPE_TARGET_TYPE (mtype) = type; |
| 680 | /* _DOMAIN_TYPE (mtype) = unknown yet */ |
| 681 | return mtype; |
| 682 | } |
| 683 | |
| 684 | /* Create a range type using either a blank type supplied in |
| 685 | RESULT_TYPE, or creating a new type, inheriting the objfile from |
| 686 | INDEX_TYPE. |
| 687 | |
| 688 | Indices will be of type INDEX_TYPE, and will range from LOW_BOUND |
| 689 | to HIGH_BOUND, inclusive. |
| 690 | |
| 691 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 692 | sure it is TYPE_CODE_UNDEF before we bash it into a range type? */ |
| 693 | |
| 694 | struct type * |
| 695 | create_range_type (struct type *result_type, struct type *index_type, |
| 696 | int low_bound, int high_bound) |
| 697 | { |
| 698 | if (result_type == NULL) |
| 699 | result_type = alloc_type (TYPE_OBJFILE (index_type)); |
| 700 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; |
| 701 | TYPE_TARGET_TYPE (result_type) = index_type; |
| 702 | if (TYPE_STUB (index_type)) |
| 703 | TYPE_TARGET_STUB (result_type) = 1; |
| 704 | else |
| 705 | TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type)); |
| 706 | TYPE_NFIELDS (result_type) = 2; |
| 707 | TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, |
| 708 | TYPE_NFIELDS (result_type) |
| 709 | * sizeof (struct field)); |
| 710 | TYPE_LOW_BOUND (result_type) = low_bound; |
| 711 | TYPE_HIGH_BOUND (result_type) = high_bound; |
| 712 | |
| 713 | if (low_bound >= 0) |
| 714 | TYPE_UNSIGNED (result_type) = 1; |
| 715 | |
| 716 | return result_type; |
| 717 | } |
| 718 | |
| 719 | /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type |
| 720 | TYPE. Return 1 if type is a range type, 0 if it is discrete (and |
| 721 | bounds will fit in LONGEST), or -1 otherwise. */ |
| 722 | |
| 723 | int |
| 724 | get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp) |
| 725 | { |
| 726 | CHECK_TYPEDEF (type); |
| 727 | switch (TYPE_CODE (type)) |
| 728 | { |
| 729 | case TYPE_CODE_RANGE: |
| 730 | *lowp = TYPE_LOW_BOUND (type); |
| 731 | *highp = TYPE_HIGH_BOUND (type); |
| 732 | return 1; |
| 733 | case TYPE_CODE_ENUM: |
| 734 | if (TYPE_NFIELDS (type) > 0) |
| 735 | { |
| 736 | /* The enums may not be sorted by value, so search all |
| 737 | entries */ |
| 738 | int i; |
| 739 | |
| 740 | *lowp = *highp = TYPE_FIELD_BITPOS (type, 0); |
| 741 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
| 742 | { |
| 743 | if (TYPE_FIELD_BITPOS (type, i) < *lowp) |
| 744 | *lowp = TYPE_FIELD_BITPOS (type, i); |
| 745 | if (TYPE_FIELD_BITPOS (type, i) > *highp) |
| 746 | *highp = TYPE_FIELD_BITPOS (type, i); |
| 747 | } |
| 748 | |
| 749 | /* Set unsigned indicator if warranted. */ |
| 750 | if (*lowp >= 0) |
| 751 | { |
| 752 | TYPE_UNSIGNED (type) = 1; |
| 753 | } |
| 754 | } |
| 755 | else |
| 756 | { |
| 757 | *lowp = 0; |
| 758 | *highp = -1; |
| 759 | } |
| 760 | return 0; |
| 761 | case TYPE_CODE_BOOL: |
| 762 | *lowp = 0; |
| 763 | *highp = 1; |
| 764 | return 0; |
| 765 | case TYPE_CODE_INT: |
| 766 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */ |
| 767 | return -1; |
| 768 | if (!TYPE_UNSIGNED (type)) |
| 769 | { |
| 770 | *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1)); |
| 771 | *highp = -*lowp - 1; |
| 772 | return 0; |
| 773 | } |
| 774 | /* ... fall through for unsigned ints ... */ |
| 775 | case TYPE_CODE_CHAR: |
| 776 | *lowp = 0; |
| 777 | /* This round-about calculation is to avoid shifting by |
| 778 | TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work |
| 779 | if TYPE_LENGTH (type) == sizeof (LONGEST). */ |
| 780 | *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1); |
| 781 | *highp = (*highp - 1) | *highp; |
| 782 | return 0; |
| 783 | default: |
| 784 | return -1; |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | /* Create an array type using either a blank type supplied in |
| 789 | RESULT_TYPE, or creating a new type, inheriting the objfile from |
| 790 | RANGE_TYPE. |
| 791 | |
| 792 | Elements will be of type ELEMENT_TYPE, the indices will be of type |
| 793 | RANGE_TYPE. |
| 794 | |
| 795 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 796 | sure it is TYPE_CODE_UNDEF before we bash it into an array |
| 797 | type? */ |
| 798 | |
| 799 | struct type * |
| 800 | create_array_type (struct type *result_type, |
| 801 | struct type *element_type, |
| 802 | struct type *range_type) |
| 803 | { |
| 804 | LONGEST low_bound, high_bound; |
| 805 | |
| 806 | if (result_type == NULL) |
| 807 | { |
| 808 | result_type = alloc_type (TYPE_OBJFILE (range_type)); |
| 809 | } |
| 810 | TYPE_CODE (result_type) = TYPE_CODE_ARRAY; |
| 811 | TYPE_TARGET_TYPE (result_type) = element_type; |
| 812 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) |
| 813 | low_bound = high_bound = 0; |
| 814 | CHECK_TYPEDEF (element_type); |
| 815 | /* Be careful when setting the array length. Ada arrays can be |
| 816 | empty arrays with the high_bound being smaller than the low_bound. |
| 817 | In such cases, the array length should be zero. */ |
| 818 | if (high_bound < low_bound) |
| 819 | TYPE_LENGTH (result_type) = 0; |
| 820 | else |
| 821 | TYPE_LENGTH (result_type) = |
| 822 | TYPE_LENGTH (element_type) * (high_bound - low_bound + 1); |
| 823 | TYPE_NFIELDS (result_type) = 1; |
| 824 | TYPE_FIELDS (result_type) = |
| 825 | (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); |
| 826 | TYPE_INDEX_TYPE (result_type) = range_type; |
| 827 | TYPE_VPTR_FIELDNO (result_type) = -1; |
| 828 | |
| 829 | /* TYPE_FLAG_TARGET_STUB will take care of zero length arrays */ |
| 830 | if (TYPE_LENGTH (result_type) == 0) |
| 831 | TYPE_TARGET_STUB (result_type) = 1; |
| 832 | |
| 833 | return result_type; |
| 834 | } |
| 835 | |
| 836 | /* Create a string type using either a blank type supplied in |
| 837 | RESULT_TYPE, or creating a new type. String types are similar |
| 838 | enough to array of char types that we can use create_array_type to |
| 839 | build the basic type and then bash it into a string type. |
| 840 | |
| 841 | For fixed length strings, the range type contains 0 as the lower |
| 842 | bound and the length of the string minus one as the upper bound. |
| 843 | |
| 844 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 845 | sure it is TYPE_CODE_UNDEF before we bash it into a string |
| 846 | type? */ |
| 847 | |
| 848 | struct type * |
| 849 | create_string_type (struct type *result_type, |
| 850 | struct type *range_type) |
| 851 | { |
| 852 | struct type *string_char_type; |
| 853 | |
| 854 | string_char_type = language_string_char_type (current_language, |
| 855 | current_gdbarch); |
| 856 | result_type = create_array_type (result_type, |
| 857 | string_char_type, |
| 858 | range_type); |
| 859 | TYPE_CODE (result_type) = TYPE_CODE_STRING; |
| 860 | return result_type; |
| 861 | } |
| 862 | |
| 863 | struct type * |
| 864 | create_set_type (struct type *result_type, struct type *domain_type) |
| 865 | { |
| 866 | if (result_type == NULL) |
| 867 | { |
| 868 | result_type = alloc_type (TYPE_OBJFILE (domain_type)); |
| 869 | } |
| 870 | TYPE_CODE (result_type) = TYPE_CODE_SET; |
| 871 | TYPE_NFIELDS (result_type) = 1; |
| 872 | TYPE_FIELDS (result_type) = TYPE_ZALLOC (result_type, sizeof (struct field)); |
| 873 | |
| 874 | if (!TYPE_STUB (domain_type)) |
| 875 | { |
| 876 | LONGEST low_bound, high_bound, bit_length; |
| 877 | if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0) |
| 878 | low_bound = high_bound = 0; |
| 879 | bit_length = high_bound - low_bound + 1; |
| 880 | TYPE_LENGTH (result_type) |
| 881 | = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; |
| 882 | if (low_bound >= 0) |
| 883 | TYPE_UNSIGNED (result_type) = 1; |
| 884 | } |
| 885 | TYPE_FIELD_TYPE (result_type, 0) = domain_type; |
| 886 | |
| 887 | return result_type; |
| 888 | } |
| 889 | |
| 890 | void |
| 891 | append_flags_type_flag (struct type *type, int bitpos, char *name) |
| 892 | { |
| 893 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS); |
| 894 | gdb_assert (bitpos < TYPE_NFIELDS (type)); |
| 895 | gdb_assert (bitpos >= 0); |
| 896 | |
| 897 | if (name) |
| 898 | { |
| 899 | TYPE_FIELD_NAME (type, bitpos) = xstrdup (name); |
| 900 | TYPE_FIELD_BITPOS (type, bitpos) = bitpos; |
| 901 | } |
| 902 | else |
| 903 | { |
| 904 | /* Don't show this field to the user. */ |
| 905 | TYPE_FIELD_BITPOS (type, bitpos) = -1; |
| 906 | } |
| 907 | } |
| 908 | |
| 909 | struct type * |
| 910 | init_flags_type (char *name, int length) |
| 911 | { |
| 912 | int nfields = length * TARGET_CHAR_BIT; |
| 913 | struct type *type; |
| 914 | |
| 915 | type = init_type (TYPE_CODE_FLAGS, length, |
| 916 | TYPE_FLAG_UNSIGNED, name, NULL); |
| 917 | TYPE_NFIELDS (type) = nfields; |
| 918 | TYPE_FIELDS (type) = TYPE_ZALLOC (type, nfields * sizeof (struct field)); |
| 919 | |
| 920 | return type; |
| 921 | } |
| 922 | |
| 923 | /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE |
| 924 | and any array types nested inside it. */ |
| 925 | |
| 926 | void |
| 927 | make_vector_type (struct type *array_type) |
| 928 | { |
| 929 | struct type *inner_array, *elt_type; |
| 930 | int flags; |
| 931 | |
| 932 | /* Find the innermost array type, in case the array is |
| 933 | multi-dimensional. */ |
| 934 | inner_array = array_type; |
| 935 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) |
| 936 | inner_array = TYPE_TARGET_TYPE (inner_array); |
| 937 | |
| 938 | elt_type = TYPE_TARGET_TYPE (inner_array); |
| 939 | if (TYPE_CODE (elt_type) == TYPE_CODE_INT) |
| 940 | { |
| 941 | flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_FLAG_NOTTEXT; |
| 942 | elt_type = make_qualified_type (elt_type, flags, NULL); |
| 943 | TYPE_TARGET_TYPE (inner_array) = elt_type; |
| 944 | } |
| 945 | |
| 946 | TYPE_VECTOR (array_type) = 1; |
| 947 | } |
| 948 | |
| 949 | struct type * |
| 950 | init_vector_type (struct type *elt_type, int n) |
| 951 | { |
| 952 | struct type *array_type; |
| 953 | |
| 954 | array_type = create_array_type (0, elt_type, |
| 955 | create_range_type (0, |
| 956 | builtin_type_int32, |
| 957 | 0, n-1)); |
| 958 | make_vector_type (array_type); |
| 959 | return array_type; |
| 960 | } |
| 961 | |
| 962 | /* Smash TYPE to be a type of pointers to members of DOMAIN with type |
| 963 | TO_TYPE. A member pointer is a wierd thing -- it amounts to a |
| 964 | typed offset into a struct, e.g. "an int at offset 8". A MEMBER |
| 965 | TYPE doesn't include the offset (that's the value of the MEMBER |
| 966 | itself), but does include the structure type into which it points |
| 967 | (for some reason). |
| 968 | |
| 969 | When "smashing" the type, we preserve the objfile that the old type |
| 970 | pointed to, since we aren't changing where the type is actually |
| 971 | allocated. */ |
| 972 | |
| 973 | void |
| 974 | smash_to_memberptr_type (struct type *type, struct type *domain, |
| 975 | struct type *to_type) |
| 976 | { |
| 977 | struct objfile *objfile; |
| 978 | |
| 979 | objfile = TYPE_OBJFILE (type); |
| 980 | |
| 981 | smash_type (type); |
| 982 | TYPE_OBJFILE (type) = objfile; |
| 983 | TYPE_TARGET_TYPE (type) = to_type; |
| 984 | TYPE_DOMAIN_TYPE (type) = domain; |
| 985 | /* Assume that a data member pointer is the same size as a normal |
| 986 | pointer. */ |
| 987 | TYPE_LENGTH (type) = gdbarch_ptr_bit (current_gdbarch) / TARGET_CHAR_BIT; |
| 988 | TYPE_CODE (type) = TYPE_CODE_MEMBERPTR; |
| 989 | } |
| 990 | |
| 991 | /* Smash TYPE to be a type of method of DOMAIN with type TO_TYPE. |
| 992 | METHOD just means `function that gets an extra "this" argument'. |
| 993 | |
| 994 | When "smashing" the type, we preserve the objfile that the old type |
| 995 | pointed to, since we aren't changing where the type is actually |
| 996 | allocated. */ |
| 997 | |
| 998 | void |
| 999 | smash_to_method_type (struct type *type, struct type *domain, |
| 1000 | struct type *to_type, struct field *args, |
| 1001 | int nargs, int varargs) |
| 1002 | { |
| 1003 | struct objfile *objfile; |
| 1004 | |
| 1005 | objfile = TYPE_OBJFILE (type); |
| 1006 | |
| 1007 | smash_type (type); |
| 1008 | TYPE_OBJFILE (type) = objfile; |
| 1009 | TYPE_TARGET_TYPE (type) = to_type; |
| 1010 | TYPE_DOMAIN_TYPE (type) = domain; |
| 1011 | TYPE_FIELDS (type) = args; |
| 1012 | TYPE_NFIELDS (type) = nargs; |
| 1013 | if (varargs) |
| 1014 | TYPE_VARARGS (type) = 1; |
| 1015 | TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */ |
| 1016 | TYPE_CODE (type) = TYPE_CODE_METHOD; |
| 1017 | } |
| 1018 | |
| 1019 | /* Return a typename for a struct/union/enum type without "struct ", |
| 1020 | "union ", or "enum ". If the type has a NULL name, return NULL. */ |
| 1021 | |
| 1022 | char * |
| 1023 | type_name_no_tag (const struct type *type) |
| 1024 | { |
| 1025 | if (TYPE_TAG_NAME (type) != NULL) |
| 1026 | return TYPE_TAG_NAME (type); |
| 1027 | |
| 1028 | /* Is there code which expects this to return the name if there is |
| 1029 | no tag name? My guess is that this is mainly used for C++ in |
| 1030 | cases where the two will always be the same. */ |
| 1031 | return TYPE_NAME (type); |
| 1032 | } |
| 1033 | |
| 1034 | /* Lookup a typedef or primitive type named NAME, visible in lexical |
| 1035 | block BLOCK. If NOERR is nonzero, return zero if NAME is not |
| 1036 | suitably defined. */ |
| 1037 | |
| 1038 | struct type * |
| 1039 | lookup_typename (char *name, struct block *block, int noerr) |
| 1040 | { |
| 1041 | struct symbol *sym; |
| 1042 | struct type *tmp; |
| 1043 | |
| 1044 | sym = lookup_symbol (name, block, VAR_DOMAIN, 0); |
| 1045 | if (sym == NULL || SYMBOL_CLASS (sym) != LOC_TYPEDEF) |
| 1046 | { |
| 1047 | tmp = language_lookup_primitive_type_by_name (current_language, |
| 1048 | current_gdbarch, |
| 1049 | name); |
| 1050 | if (tmp) |
| 1051 | { |
| 1052 | return tmp; |
| 1053 | } |
| 1054 | else if (!tmp && noerr) |
| 1055 | { |
| 1056 | return NULL; |
| 1057 | } |
| 1058 | else |
| 1059 | { |
| 1060 | error (_("No type named %s."), name); |
| 1061 | } |
| 1062 | } |
| 1063 | return (SYMBOL_TYPE (sym)); |
| 1064 | } |
| 1065 | |
| 1066 | struct type * |
| 1067 | lookup_unsigned_typename (char *name) |
| 1068 | { |
| 1069 | char *uns = alloca (strlen (name) + 10); |
| 1070 | |
| 1071 | strcpy (uns, "unsigned "); |
| 1072 | strcpy (uns + 9, name); |
| 1073 | return (lookup_typename (uns, (struct block *) NULL, 0)); |
| 1074 | } |
| 1075 | |
| 1076 | struct type * |
| 1077 | lookup_signed_typename (char *name) |
| 1078 | { |
| 1079 | struct type *t; |
| 1080 | char *uns = alloca (strlen (name) + 8); |
| 1081 | |
| 1082 | strcpy (uns, "signed "); |
| 1083 | strcpy (uns + 7, name); |
| 1084 | t = lookup_typename (uns, (struct block *) NULL, 1); |
| 1085 | /* If we don't find "signed FOO" just try again with plain "FOO". */ |
| 1086 | if (t != NULL) |
| 1087 | return t; |
| 1088 | return lookup_typename (name, (struct block *) NULL, 0); |
| 1089 | } |
| 1090 | |
| 1091 | /* Lookup a structure type named "struct NAME", |
| 1092 | visible in lexical block BLOCK. */ |
| 1093 | |
| 1094 | struct type * |
| 1095 | lookup_struct (char *name, struct block *block) |
| 1096 | { |
| 1097 | struct symbol *sym; |
| 1098 | |
| 1099 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
| 1100 | |
| 1101 | if (sym == NULL) |
| 1102 | { |
| 1103 | error (_("No struct type named %s."), name); |
| 1104 | } |
| 1105 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) |
| 1106 | { |
| 1107 | error (_("This context has class, union or enum %s, not a struct."), |
| 1108 | name); |
| 1109 | } |
| 1110 | return (SYMBOL_TYPE (sym)); |
| 1111 | } |
| 1112 | |
| 1113 | /* Lookup a union type named "union NAME", |
| 1114 | visible in lexical block BLOCK. */ |
| 1115 | |
| 1116 | struct type * |
| 1117 | lookup_union (char *name, struct block *block) |
| 1118 | { |
| 1119 | struct symbol *sym; |
| 1120 | struct type *t; |
| 1121 | |
| 1122 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
| 1123 | |
| 1124 | if (sym == NULL) |
| 1125 | error (_("No union type named %s."), name); |
| 1126 | |
| 1127 | t = SYMBOL_TYPE (sym); |
| 1128 | |
| 1129 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
| 1130 | return t; |
| 1131 | |
| 1132 | /* C++ unions may come out with TYPE_CODE_CLASS, but we look at |
| 1133 | * a further "declared_type" field to discover it is really a union. |
| 1134 | */ |
| 1135 | if (HAVE_CPLUS_STRUCT (t)) |
| 1136 | if (TYPE_DECLARED_TYPE (t) == DECLARED_TYPE_UNION) |
| 1137 | return t; |
| 1138 | |
| 1139 | /* If we get here, it's not a union. */ |
| 1140 | error (_("This context has class, struct or enum %s, not a union."), |
| 1141 | name); |
| 1142 | } |
| 1143 | |
| 1144 | |
| 1145 | /* Lookup an enum type named "enum NAME", |
| 1146 | visible in lexical block BLOCK. */ |
| 1147 | |
| 1148 | struct type * |
| 1149 | lookup_enum (char *name, struct block *block) |
| 1150 | { |
| 1151 | struct symbol *sym; |
| 1152 | |
| 1153 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0); |
| 1154 | if (sym == NULL) |
| 1155 | { |
| 1156 | error (_("No enum type named %s."), name); |
| 1157 | } |
| 1158 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM) |
| 1159 | { |
| 1160 | error (_("This context has class, struct or union %s, not an enum."), |
| 1161 | name); |
| 1162 | } |
| 1163 | return (SYMBOL_TYPE (sym)); |
| 1164 | } |
| 1165 | |
| 1166 | /* Lookup a template type named "template NAME<TYPE>", |
| 1167 | visible in lexical block BLOCK. */ |
| 1168 | |
| 1169 | struct type * |
| 1170 | lookup_template_type (char *name, struct type *type, |
| 1171 | struct block *block) |
| 1172 | { |
| 1173 | struct symbol *sym; |
| 1174 | char *nam = (char *) |
| 1175 | alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4); |
| 1176 | strcpy (nam, name); |
| 1177 | strcat (nam, "<"); |
| 1178 | strcat (nam, TYPE_NAME (type)); |
| 1179 | strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */ |
| 1180 | |
| 1181 | sym = lookup_symbol (nam, block, VAR_DOMAIN, 0); |
| 1182 | |
| 1183 | if (sym == NULL) |
| 1184 | { |
| 1185 | error (_("No template type named %s."), name); |
| 1186 | } |
| 1187 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) |
| 1188 | { |
| 1189 | error (_("This context has class, union or enum %s, not a struct."), |
| 1190 | name); |
| 1191 | } |
| 1192 | return (SYMBOL_TYPE (sym)); |
| 1193 | } |
| 1194 | |
| 1195 | /* Given a type TYPE, lookup the type of the component of type named |
| 1196 | NAME. |
| 1197 | |
| 1198 | TYPE can be either a struct or union, or a pointer or reference to |
| 1199 | a struct or union. If it is a pointer or reference, its target |
| 1200 | type is automatically used. Thus '.' and '->' are interchangable, |
| 1201 | as specified for the definitions of the expression element types |
| 1202 | STRUCTOP_STRUCT and STRUCTOP_PTR. |
| 1203 | |
| 1204 | If NOERR is nonzero, return zero if NAME is not suitably defined. |
| 1205 | If NAME is the name of a baseclass type, return that type. */ |
| 1206 | |
| 1207 | struct type * |
| 1208 | lookup_struct_elt_type (struct type *type, char *name, int noerr) |
| 1209 | { |
| 1210 | int i; |
| 1211 | |
| 1212 | for (;;) |
| 1213 | { |
| 1214 | CHECK_TYPEDEF (type); |
| 1215 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
| 1216 | && TYPE_CODE (type) != TYPE_CODE_REF) |
| 1217 | break; |
| 1218 | type = TYPE_TARGET_TYPE (type); |
| 1219 | } |
| 1220 | |
| 1221 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
| 1222 | && TYPE_CODE (type) != TYPE_CODE_UNION) |
| 1223 | { |
| 1224 | target_terminal_ours (); |
| 1225 | gdb_flush (gdb_stdout); |
| 1226 | fprintf_unfiltered (gdb_stderr, "Type "); |
| 1227 | type_print (type, "", gdb_stderr, -1); |
| 1228 | error (_(" is not a structure or union type.")); |
| 1229 | } |
| 1230 | |
| 1231 | #if 0 |
| 1232 | /* FIXME: This change put in by Michael seems incorrect for the case |
| 1233 | where the structure tag name is the same as the member name. |
| 1234 | I.E. when doing "ptype bell->bar" for "struct foo { int bar; int |
| 1235 | foo; } bell;" Disabled by fnf. */ |
| 1236 | { |
| 1237 | char *typename; |
| 1238 | |
| 1239 | typename = type_name_no_tag (type); |
| 1240 | if (typename != NULL && strcmp (typename, name) == 0) |
| 1241 | return type; |
| 1242 | } |
| 1243 | #endif |
| 1244 | |
| 1245 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) |
| 1246 | { |
| 1247 | char *t_field_name = TYPE_FIELD_NAME (type, i); |
| 1248 | |
| 1249 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) |
| 1250 | { |
| 1251 | return TYPE_FIELD_TYPE (type, i); |
| 1252 | } |
| 1253 | } |
| 1254 | |
| 1255 | /* OK, it's not in this class. Recursively check the baseclasses. */ |
| 1256 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) |
| 1257 | { |
| 1258 | struct type *t; |
| 1259 | |
| 1260 | t = lookup_struct_elt_type (TYPE_BASECLASS (type, i), name, 1); |
| 1261 | if (t != NULL) |
| 1262 | { |
| 1263 | return t; |
| 1264 | } |
| 1265 | } |
| 1266 | |
| 1267 | if (noerr) |
| 1268 | { |
| 1269 | return NULL; |
| 1270 | } |
| 1271 | |
| 1272 | target_terminal_ours (); |
| 1273 | gdb_flush (gdb_stdout); |
| 1274 | fprintf_unfiltered (gdb_stderr, "Type "); |
| 1275 | type_print (type, "", gdb_stderr, -1); |
| 1276 | fprintf_unfiltered (gdb_stderr, " has no component named "); |
| 1277 | fputs_filtered (name, gdb_stderr); |
| 1278 | error ((".")); |
| 1279 | return (struct type *) -1; /* For lint */ |
| 1280 | } |
| 1281 | |
| 1282 | /* Lookup the vptr basetype/fieldno values for TYPE. |
| 1283 | If found store vptr_basetype in *BASETYPEP if non-NULL, and return |
| 1284 | vptr_fieldno. Also, if found and basetype is from the same objfile, |
| 1285 | cache the results. |
| 1286 | If not found, return -1 and ignore BASETYPEP. |
| 1287 | Callers should be aware that in some cases (for example, |
| 1288 | the type or one of its baseclasses is a stub type and we are |
| 1289 | debugging a .o file), this function will not be able to find the |
| 1290 | virtual function table pointer, and vptr_fieldno will remain -1 and |
| 1291 | vptr_basetype will remain NULL or incomplete. */ |
| 1292 | |
| 1293 | int |
| 1294 | get_vptr_fieldno (struct type *type, struct type **basetypep) |
| 1295 | { |
| 1296 | CHECK_TYPEDEF (type); |
| 1297 | |
| 1298 | if (TYPE_VPTR_FIELDNO (type) < 0) |
| 1299 | { |
| 1300 | int i; |
| 1301 | |
| 1302 | /* We must start at zero in case the first (and only) baseclass |
| 1303 | is virtual (and hence we cannot share the table pointer). */ |
| 1304 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
| 1305 | { |
| 1306 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
| 1307 | int fieldno; |
| 1308 | struct type *basetype; |
| 1309 | |
| 1310 | fieldno = get_vptr_fieldno (baseclass, &basetype); |
| 1311 | if (fieldno >= 0) |
| 1312 | { |
| 1313 | /* If the type comes from a different objfile we can't cache |
| 1314 | it, it may have a different lifetime. PR 2384 */ |
| 1315 | if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype)) |
| 1316 | { |
| 1317 | TYPE_VPTR_FIELDNO (type) = fieldno; |
| 1318 | TYPE_VPTR_BASETYPE (type) = basetype; |
| 1319 | } |
| 1320 | if (basetypep) |
| 1321 | *basetypep = basetype; |
| 1322 | return fieldno; |
| 1323 | } |
| 1324 | } |
| 1325 | |
| 1326 | /* Not found. */ |
| 1327 | return -1; |
| 1328 | } |
| 1329 | else |
| 1330 | { |
| 1331 | if (basetypep) |
| 1332 | *basetypep = TYPE_VPTR_BASETYPE (type); |
| 1333 | return TYPE_VPTR_FIELDNO (type); |
| 1334 | } |
| 1335 | } |
| 1336 | |
| 1337 | /* Find the method and field indices for the destructor in class type T. |
| 1338 | Return 1 if the destructor was found, otherwise, return 0. */ |
| 1339 | |
| 1340 | int |
| 1341 | get_destructor_fn_field (struct type *t, |
| 1342 | int *method_indexp, |
| 1343 | int *field_indexp) |
| 1344 | { |
| 1345 | int i; |
| 1346 | |
| 1347 | for (i = 0; i < TYPE_NFN_FIELDS (t); i++) |
| 1348 | { |
| 1349 | int j; |
| 1350 | struct fn_field *f = TYPE_FN_FIELDLIST1 (t, i); |
| 1351 | |
| 1352 | for (j = 0; j < TYPE_FN_FIELDLIST_LENGTH (t, i); j++) |
| 1353 | { |
| 1354 | if (is_destructor_name (TYPE_FN_FIELD_PHYSNAME (f, j)) != 0) |
| 1355 | { |
| 1356 | *method_indexp = i; |
| 1357 | *field_indexp = j; |
| 1358 | return 1; |
| 1359 | } |
| 1360 | } |
| 1361 | } |
| 1362 | return 0; |
| 1363 | } |
| 1364 | |
| 1365 | static void |
| 1366 | stub_noname_complaint (void) |
| 1367 | { |
| 1368 | complaint (&symfile_complaints, _("stub type has NULL name")); |
| 1369 | } |
| 1370 | |
| 1371 | /* Added by Bryan Boreham, Kewill, Sun Sep 17 18:07:17 1989. |
| 1372 | |
| 1373 | If this is a stubbed struct (i.e. declared as struct foo *), see if |
| 1374 | we can find a full definition in some other file. If so, copy this |
| 1375 | definition, so we can use it in future. There used to be a comment |
| 1376 | (but not any code) that if we don't find a full definition, we'd |
| 1377 | set a flag so we don't spend time in the future checking the same |
| 1378 | type. That would be a mistake, though--we might load in more |
| 1379 | symbols which contain a full definition for the type. |
| 1380 | |
| 1381 | This used to be coded as a macro, but I don't think it is called |
| 1382 | often enough to merit such treatment. */ |
| 1383 | |
| 1384 | /* Find the real type of TYPE. This function returns the real type, |
| 1385 | after removing all layers of typedefs and completing opaque or stub |
| 1386 | types. Completion changes the TYPE argument, but stripping of |
| 1387 | typedefs does not. */ |
| 1388 | |
| 1389 | struct type * |
| 1390 | check_typedef (struct type *type) |
| 1391 | { |
| 1392 | struct type *orig_type = type; |
| 1393 | int is_const, is_volatile; |
| 1394 | |
| 1395 | gdb_assert (type); |
| 1396 | |
| 1397 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
| 1398 | { |
| 1399 | if (!TYPE_TARGET_TYPE (type)) |
| 1400 | { |
| 1401 | char *name; |
| 1402 | struct symbol *sym; |
| 1403 | |
| 1404 | /* It is dangerous to call lookup_symbol if we are currently |
| 1405 | reading a symtab. Infinite recursion is one danger. */ |
| 1406 | if (currently_reading_symtab) |
| 1407 | return type; |
| 1408 | |
| 1409 | name = type_name_no_tag (type); |
| 1410 | /* FIXME: shouldn't we separately check the TYPE_NAME and |
| 1411 | the TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or |
| 1412 | VAR_DOMAIN as appropriate? (this code was written before |
| 1413 | TYPE_NAME and TYPE_TAG_NAME were separate). */ |
| 1414 | if (name == NULL) |
| 1415 | { |
| 1416 | stub_noname_complaint (); |
| 1417 | return type; |
| 1418 | } |
| 1419 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0); |
| 1420 | if (sym) |
| 1421 | TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym); |
| 1422 | else /* TYPE_CODE_UNDEF */ |
| 1423 | TYPE_TARGET_TYPE (type) = alloc_type (NULL); |
| 1424 | } |
| 1425 | type = TYPE_TARGET_TYPE (type); |
| 1426 | } |
| 1427 | |
| 1428 | is_const = TYPE_CONST (type); |
| 1429 | is_volatile = TYPE_VOLATILE (type); |
| 1430 | |
| 1431 | /* If this is a struct/class/union with no fields, then check |
| 1432 | whether a full definition exists somewhere else. This is for |
| 1433 | systems where a type definition with no fields is issued for such |
| 1434 | types, instead of identifying them as stub types in the first |
| 1435 | place. */ |
| 1436 | |
| 1437 | if (TYPE_IS_OPAQUE (type) |
| 1438 | && opaque_type_resolution |
| 1439 | && !currently_reading_symtab) |
| 1440 | { |
| 1441 | char *name = type_name_no_tag (type); |
| 1442 | struct type *newtype; |
| 1443 | if (name == NULL) |
| 1444 | { |
| 1445 | stub_noname_complaint (); |
| 1446 | return type; |
| 1447 | } |
| 1448 | newtype = lookup_transparent_type (name); |
| 1449 | |
| 1450 | if (newtype) |
| 1451 | { |
| 1452 | /* If the resolved type and the stub are in the same |
| 1453 | objfile, then replace the stub type with the real deal. |
| 1454 | But if they're in separate objfiles, leave the stub |
| 1455 | alone; we'll just look up the transparent type every time |
| 1456 | we call check_typedef. We can't create pointers between |
| 1457 | types allocated to different objfiles, since they may |
| 1458 | have different lifetimes. Trying to copy NEWTYPE over to |
| 1459 | TYPE's objfile is pointless, too, since you'll have to |
| 1460 | move over any other types NEWTYPE refers to, which could |
| 1461 | be an unbounded amount of stuff. */ |
| 1462 | if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type)) |
| 1463 | make_cv_type (is_const, is_volatile, newtype, &type); |
| 1464 | else |
| 1465 | type = newtype; |
| 1466 | } |
| 1467 | } |
| 1468 | /* Otherwise, rely on the stub flag being set for opaque/stubbed |
| 1469 | types. */ |
| 1470 | else if (TYPE_STUB (type) && !currently_reading_symtab) |
| 1471 | { |
| 1472 | char *name = type_name_no_tag (type); |
| 1473 | /* FIXME: shouldn't we separately check the TYPE_NAME and the |
| 1474 | TYPE_TAG_NAME, and look in STRUCT_DOMAIN and/or VAR_DOMAIN |
| 1475 | as appropriate? (this code was written before TYPE_NAME and |
| 1476 | TYPE_TAG_NAME were separate). */ |
| 1477 | struct symbol *sym; |
| 1478 | if (name == NULL) |
| 1479 | { |
| 1480 | stub_noname_complaint (); |
| 1481 | return type; |
| 1482 | } |
| 1483 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0); |
| 1484 | if (sym) |
| 1485 | { |
| 1486 | /* Same as above for opaque types, we can replace the stub |
| 1487 | with the complete type only if they are int the same |
| 1488 | objfile. */ |
| 1489 | if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type)) |
| 1490 | make_cv_type (is_const, is_volatile, |
| 1491 | SYMBOL_TYPE (sym), &type); |
| 1492 | else |
| 1493 | type = SYMBOL_TYPE (sym); |
| 1494 | } |
| 1495 | } |
| 1496 | |
| 1497 | if (TYPE_TARGET_STUB (type)) |
| 1498 | { |
| 1499 | struct type *range_type; |
| 1500 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); |
| 1501 | |
| 1502 | if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type)) |
| 1503 | { |
| 1504 | /* Empty. */ |
| 1505 | } |
| 1506 | else if (TYPE_CODE (type) == TYPE_CODE_ARRAY |
| 1507 | && TYPE_NFIELDS (type) == 1 |
| 1508 | && (TYPE_CODE (range_type = TYPE_INDEX_TYPE (type)) |
| 1509 | == TYPE_CODE_RANGE)) |
| 1510 | { |
| 1511 | /* Now recompute the length of the array type, based on its |
| 1512 | number of elements and the target type's length. |
| 1513 | Watch out for Ada null Ada arrays where the high bound |
| 1514 | is smaller than the low bound. */ |
| 1515 | const int low_bound = TYPE_LOW_BOUND (range_type); |
| 1516 | const int high_bound = TYPE_HIGH_BOUND (range_type); |
| 1517 | int nb_elements; |
| 1518 | |
| 1519 | if (high_bound < low_bound) |
| 1520 | nb_elements = 0; |
| 1521 | else |
| 1522 | nb_elements = high_bound - low_bound + 1; |
| 1523 | |
| 1524 | TYPE_LENGTH (type) = nb_elements * TYPE_LENGTH (target_type); |
| 1525 | TYPE_TARGET_STUB (type) = 0; |
| 1526 | } |
| 1527 | else if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| 1528 | { |
| 1529 | TYPE_LENGTH (type) = TYPE_LENGTH (target_type); |
| 1530 | TYPE_TARGET_STUB (type) = 0; |
| 1531 | } |
| 1532 | } |
| 1533 | /* Cache TYPE_LENGTH for future use. */ |
| 1534 | TYPE_LENGTH (orig_type) = TYPE_LENGTH (type); |
| 1535 | return type; |
| 1536 | } |
| 1537 | |
| 1538 | /* Parse a type expression in the string [P..P+LENGTH). If an error |
| 1539 | occurs, silently return builtin_type_void. */ |
| 1540 | |
| 1541 | static struct type * |
| 1542 | safe_parse_type (char *p, int length) |
| 1543 | { |
| 1544 | struct ui_file *saved_gdb_stderr; |
| 1545 | struct type *type; |
| 1546 | |
| 1547 | /* Suppress error messages. */ |
| 1548 | saved_gdb_stderr = gdb_stderr; |
| 1549 | gdb_stderr = ui_file_new (); |
| 1550 | |
| 1551 | /* Call parse_and_eval_type() without fear of longjmp()s. */ |
| 1552 | if (!gdb_parse_and_eval_type (p, length, &type)) |
| 1553 | type = builtin_type_void; |
| 1554 | |
| 1555 | /* Stop suppressing error messages. */ |
| 1556 | ui_file_delete (gdb_stderr); |
| 1557 | gdb_stderr = saved_gdb_stderr; |
| 1558 | |
| 1559 | return type; |
| 1560 | } |
| 1561 | |
| 1562 | /* Ugly hack to convert method stubs into method types. |
| 1563 | |
| 1564 | He ain't kiddin'. This demangles the name of the method into a |
| 1565 | string including argument types, parses out each argument type, |
| 1566 | generates a string casting a zero to that type, evaluates the |
| 1567 | string, and stuffs the resulting type into an argtype vector!!! |
| 1568 | Then it knows the type of the whole function (including argument |
| 1569 | types for overloading), which info used to be in the stab's but was |
| 1570 | removed to hack back the space required for them. */ |
| 1571 | |
| 1572 | static void |
| 1573 | check_stub_method (struct type *type, int method_id, int signature_id) |
| 1574 | { |
| 1575 | struct fn_field *f; |
| 1576 | char *mangled_name = gdb_mangle_name (type, method_id, signature_id); |
| 1577 | char *demangled_name = cplus_demangle (mangled_name, |
| 1578 | DMGL_PARAMS | DMGL_ANSI); |
| 1579 | char *argtypetext, *p; |
| 1580 | int depth = 0, argcount = 1; |
| 1581 | struct field *argtypes; |
| 1582 | struct type *mtype; |
| 1583 | |
| 1584 | /* Make sure we got back a function string that we can use. */ |
| 1585 | if (demangled_name) |
| 1586 | p = strchr (demangled_name, '('); |
| 1587 | else |
| 1588 | p = NULL; |
| 1589 | |
| 1590 | if (demangled_name == NULL || p == NULL) |
| 1591 | error (_("Internal: Cannot demangle mangled name `%s'."), |
| 1592 | mangled_name); |
| 1593 | |
| 1594 | /* Now, read in the parameters that define this type. */ |
| 1595 | p += 1; |
| 1596 | argtypetext = p; |
| 1597 | while (*p) |
| 1598 | { |
| 1599 | if (*p == '(' || *p == '<') |
| 1600 | { |
| 1601 | depth += 1; |
| 1602 | } |
| 1603 | else if (*p == ')' || *p == '>') |
| 1604 | { |
| 1605 | depth -= 1; |
| 1606 | } |
| 1607 | else if (*p == ',' && depth == 0) |
| 1608 | { |
| 1609 | argcount += 1; |
| 1610 | } |
| 1611 | |
| 1612 | p += 1; |
| 1613 | } |
| 1614 | |
| 1615 | /* If we read one argument and it was ``void'', don't count it. */ |
| 1616 | if (strncmp (argtypetext, "(void)", 6) == 0) |
| 1617 | argcount -= 1; |
| 1618 | |
| 1619 | /* We need one extra slot, for the THIS pointer. */ |
| 1620 | |
| 1621 | argtypes = (struct field *) |
| 1622 | TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field)); |
| 1623 | p = argtypetext; |
| 1624 | |
| 1625 | /* Add THIS pointer for non-static methods. */ |
| 1626 | f = TYPE_FN_FIELDLIST1 (type, method_id); |
| 1627 | if (TYPE_FN_FIELD_STATIC_P (f, signature_id)) |
| 1628 | argcount = 0; |
| 1629 | else |
| 1630 | { |
| 1631 | argtypes[0].type = lookup_pointer_type (type); |
| 1632 | argcount = 1; |
| 1633 | } |
| 1634 | |
| 1635 | if (*p != ')') /* () means no args, skip while */ |
| 1636 | { |
| 1637 | depth = 0; |
| 1638 | while (*p) |
| 1639 | { |
| 1640 | if (depth <= 0 && (*p == ',' || *p == ')')) |
| 1641 | { |
| 1642 | /* Avoid parsing of ellipsis, they will be handled below. |
| 1643 | Also avoid ``void'' as above. */ |
| 1644 | if (strncmp (argtypetext, "...", p - argtypetext) != 0 |
| 1645 | && strncmp (argtypetext, "void", p - argtypetext) != 0) |
| 1646 | { |
| 1647 | argtypes[argcount].type = |
| 1648 | safe_parse_type (argtypetext, p - argtypetext); |
| 1649 | argcount += 1; |
| 1650 | } |
| 1651 | argtypetext = p + 1; |
| 1652 | } |
| 1653 | |
| 1654 | if (*p == '(' || *p == '<') |
| 1655 | { |
| 1656 | depth += 1; |
| 1657 | } |
| 1658 | else if (*p == ')' || *p == '>') |
| 1659 | { |
| 1660 | depth -= 1; |
| 1661 | } |
| 1662 | |
| 1663 | p += 1; |
| 1664 | } |
| 1665 | } |
| 1666 | |
| 1667 | TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name; |
| 1668 | |
| 1669 | /* Now update the old "stub" type into a real type. */ |
| 1670 | mtype = TYPE_FN_FIELD_TYPE (f, signature_id); |
| 1671 | TYPE_DOMAIN_TYPE (mtype) = type; |
| 1672 | TYPE_FIELDS (mtype) = argtypes; |
| 1673 | TYPE_NFIELDS (mtype) = argcount; |
| 1674 | TYPE_STUB (mtype) = 0; |
| 1675 | TYPE_FN_FIELD_STUB (f, signature_id) = 0; |
| 1676 | if (p[-2] == '.') |
| 1677 | TYPE_VARARGS (mtype) = 1; |
| 1678 | |
| 1679 | xfree (demangled_name); |
| 1680 | } |
| 1681 | |
| 1682 | /* This is the external interface to check_stub_method, above. This |
| 1683 | function unstubs all of the signatures for TYPE's METHOD_ID method |
| 1684 | name. After calling this function TYPE_FN_FIELD_STUB will be |
| 1685 | cleared for each signature and TYPE_FN_FIELDLIST_NAME will be |
| 1686 | correct. |
| 1687 | |
| 1688 | This function unfortunately can not die until stabs do. */ |
| 1689 | |
| 1690 | void |
| 1691 | check_stub_method_group (struct type *type, int method_id) |
| 1692 | { |
| 1693 | int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id); |
| 1694 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); |
| 1695 | int j, found_stub = 0; |
| 1696 | |
| 1697 | for (j = 0; j < len; j++) |
| 1698 | if (TYPE_FN_FIELD_STUB (f, j)) |
| 1699 | { |
| 1700 | found_stub = 1; |
| 1701 | check_stub_method (type, method_id, j); |
| 1702 | } |
| 1703 | |
| 1704 | /* GNU v3 methods with incorrect names were corrected when we read |
| 1705 | in type information, because it was cheaper to do it then. The |
| 1706 | only GNU v2 methods with incorrect method names are operators and |
| 1707 | destructors; destructors were also corrected when we read in type |
| 1708 | information. |
| 1709 | |
| 1710 | Therefore the only thing we need to handle here are v2 operator |
| 1711 | names. */ |
| 1712 | if (found_stub && strncmp (TYPE_FN_FIELD_PHYSNAME (f, 0), "_Z", 2) != 0) |
| 1713 | { |
| 1714 | int ret; |
| 1715 | char dem_opname[256]; |
| 1716 | |
| 1717 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, |
| 1718 | method_id), |
| 1719 | dem_opname, DMGL_ANSI); |
| 1720 | if (!ret) |
| 1721 | ret = cplus_demangle_opname (TYPE_FN_FIELDLIST_NAME (type, |
| 1722 | method_id), |
| 1723 | dem_opname, 0); |
| 1724 | if (ret) |
| 1725 | TYPE_FN_FIELDLIST_NAME (type, method_id) = xstrdup (dem_opname); |
| 1726 | } |
| 1727 | } |
| 1728 | |
| 1729 | const struct cplus_struct_type cplus_struct_default; |
| 1730 | |
| 1731 | void |
| 1732 | allocate_cplus_struct_type (struct type *type) |
| 1733 | { |
| 1734 | if (!HAVE_CPLUS_STRUCT (type)) |
| 1735 | { |
| 1736 | TYPE_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *) |
| 1737 | TYPE_ALLOC (type, sizeof (struct cplus_struct_type)); |
| 1738 | *(TYPE_CPLUS_SPECIFIC (type)) = cplus_struct_default; |
| 1739 | } |
| 1740 | } |
| 1741 | |
| 1742 | /* Helper function to initialize the standard scalar types. |
| 1743 | |
| 1744 | If NAME is non-NULL and OBJFILE is non-NULL, then we make a copy of |
| 1745 | the string pointed to by name in the objfile_obstack for that |
| 1746 | objfile, and initialize the type name to that copy. There are |
| 1747 | places (mipsread.c in particular, where init_type is called with a |
| 1748 | NULL value for NAME). */ |
| 1749 | |
| 1750 | struct type * |
| 1751 | init_type (enum type_code code, int length, int flags, |
| 1752 | char *name, struct objfile *objfile) |
| 1753 | { |
| 1754 | struct type *type; |
| 1755 | |
| 1756 | type = alloc_type (objfile); |
| 1757 | TYPE_CODE (type) = code; |
| 1758 | TYPE_LENGTH (type) = length; |
| 1759 | |
| 1760 | gdb_assert (!(flags & (TYPE_FLAG_MIN - 1))); |
| 1761 | if (flags & TYPE_FLAG_UNSIGNED) |
| 1762 | TYPE_UNSIGNED (type) = 1; |
| 1763 | if (flags & TYPE_FLAG_NOSIGN) |
| 1764 | TYPE_NOSIGN (type) = 1; |
| 1765 | if (flags & TYPE_FLAG_STUB) |
| 1766 | TYPE_STUB (type) = 1; |
| 1767 | if (flags & TYPE_FLAG_TARGET_STUB) |
| 1768 | TYPE_TARGET_STUB (type) = 1; |
| 1769 | if (flags & TYPE_FLAG_STATIC) |
| 1770 | TYPE_STATIC (type) = 1; |
| 1771 | if (flags & TYPE_FLAG_PROTOTYPED) |
| 1772 | TYPE_PROTOTYPED (type) = 1; |
| 1773 | if (flags & TYPE_FLAG_INCOMPLETE) |
| 1774 | TYPE_INCOMPLETE (type) = 1; |
| 1775 | if (flags & TYPE_FLAG_VARARGS) |
| 1776 | TYPE_VARARGS (type) = 1; |
| 1777 | if (flags & TYPE_FLAG_VECTOR) |
| 1778 | TYPE_VECTOR (type) = 1; |
| 1779 | if (flags & TYPE_FLAG_STUB_SUPPORTED) |
| 1780 | TYPE_STUB_SUPPORTED (type) = 1; |
| 1781 | if (flags & TYPE_FLAG_NOTTEXT) |
| 1782 | TYPE_NOTTEXT (type) = 1; |
| 1783 | if (flags & TYPE_FLAG_FIXED_INSTANCE) |
| 1784 | TYPE_FIXED_INSTANCE (type) = 1; |
| 1785 | |
| 1786 | if ((name != NULL) && (objfile != NULL)) |
| 1787 | { |
| 1788 | TYPE_NAME (type) = obsavestring (name, strlen (name), |
| 1789 | &objfile->objfile_obstack); |
| 1790 | } |
| 1791 | else |
| 1792 | { |
| 1793 | TYPE_NAME (type) = name; |
| 1794 | } |
| 1795 | |
| 1796 | /* C++ fancies. */ |
| 1797 | |
| 1798 | if (name && strcmp (name, "char") == 0) |
| 1799 | TYPE_NOSIGN (type) = 1; |
| 1800 | |
| 1801 | if (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION |
| 1802 | || code == TYPE_CODE_NAMESPACE) |
| 1803 | { |
| 1804 | INIT_CPLUS_SPECIFIC (type); |
| 1805 | } |
| 1806 | return type; |
| 1807 | } |
| 1808 | |
| 1809 | /* Helper function. Create an empty composite type. */ |
| 1810 | |
| 1811 | struct type * |
| 1812 | init_composite_type (char *name, enum type_code code) |
| 1813 | { |
| 1814 | struct type *t; |
| 1815 | gdb_assert (code == TYPE_CODE_STRUCT |
| 1816 | || code == TYPE_CODE_UNION); |
| 1817 | t = init_type (code, 0, 0, NULL, NULL); |
| 1818 | TYPE_TAG_NAME (t) = name; |
| 1819 | return t; |
| 1820 | } |
| 1821 | |
| 1822 | /* Helper function. Append a field to a composite type. */ |
| 1823 | |
| 1824 | void |
| 1825 | append_composite_type_field_aligned (struct type *t, char *name, |
| 1826 | struct type *field, int alignment) |
| 1827 | { |
| 1828 | struct field *f; |
| 1829 | TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; |
| 1830 | TYPE_FIELDS (t) = xrealloc (TYPE_FIELDS (t), |
| 1831 | sizeof (struct field) * TYPE_NFIELDS (t)); |
| 1832 | f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]); |
| 1833 | memset (f, 0, sizeof f[0]); |
| 1834 | FIELD_TYPE (f[0]) = field; |
| 1835 | FIELD_NAME (f[0]) = name; |
| 1836 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
| 1837 | { |
| 1838 | if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) |
| 1839 | TYPE_LENGTH (t) = TYPE_LENGTH (field); |
| 1840 | } |
| 1841 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT) |
| 1842 | { |
| 1843 | TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field); |
| 1844 | if (TYPE_NFIELDS (t) > 1) |
| 1845 | { |
| 1846 | FIELD_BITPOS (f[0]) = (FIELD_BITPOS (f[-1]) |
| 1847 | + (TYPE_LENGTH (FIELD_TYPE (f[-1])) |
| 1848 | * TARGET_CHAR_BIT)); |
| 1849 | |
| 1850 | if (alignment) |
| 1851 | { |
| 1852 | int left = FIELD_BITPOS (f[0]) % (alignment * TARGET_CHAR_BIT); |
| 1853 | if (left) |
| 1854 | { |
| 1855 | FIELD_BITPOS (f[0]) += left; |
| 1856 | TYPE_LENGTH (t) += left / TARGET_CHAR_BIT; |
| 1857 | } |
| 1858 | } |
| 1859 | } |
| 1860 | } |
| 1861 | } |
| 1862 | |
| 1863 | void |
| 1864 | append_composite_type_field (struct type *t, char *name, |
| 1865 | struct type *field) |
| 1866 | { |
| 1867 | append_composite_type_field_aligned (t, name, field, 0); |
| 1868 | } |
| 1869 | |
| 1870 | int |
| 1871 | can_dereference (struct type *t) |
| 1872 | { |
| 1873 | /* FIXME: Should we return true for references as well as |
| 1874 | pointers? */ |
| 1875 | CHECK_TYPEDEF (t); |
| 1876 | return |
| 1877 | (t != NULL |
| 1878 | && TYPE_CODE (t) == TYPE_CODE_PTR |
| 1879 | && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID); |
| 1880 | } |
| 1881 | |
| 1882 | int |
| 1883 | is_integral_type (struct type *t) |
| 1884 | { |
| 1885 | CHECK_TYPEDEF (t); |
| 1886 | return |
| 1887 | ((t != NULL) |
| 1888 | && ((TYPE_CODE (t) == TYPE_CODE_INT) |
| 1889 | || (TYPE_CODE (t) == TYPE_CODE_ENUM) |
| 1890 | || (TYPE_CODE (t) == TYPE_CODE_FLAGS) |
| 1891 | || (TYPE_CODE (t) == TYPE_CODE_CHAR) |
| 1892 | || (TYPE_CODE (t) == TYPE_CODE_RANGE) |
| 1893 | || (TYPE_CODE (t) == TYPE_CODE_BOOL))); |
| 1894 | } |
| 1895 | |
| 1896 | /* Check whether BASE is an ancestor or base class or DCLASS |
| 1897 | Return 1 if so, and 0 if not. |
| 1898 | Note: callers may want to check for identity of the types before |
| 1899 | calling this function -- identical types are considered to satisfy |
| 1900 | the ancestor relationship even if they're identical. */ |
| 1901 | |
| 1902 | int |
| 1903 | is_ancestor (struct type *base, struct type *dclass) |
| 1904 | { |
| 1905 | int i; |
| 1906 | |
| 1907 | CHECK_TYPEDEF (base); |
| 1908 | CHECK_TYPEDEF (dclass); |
| 1909 | |
| 1910 | if (base == dclass) |
| 1911 | return 1; |
| 1912 | if (TYPE_NAME (base) && TYPE_NAME (dclass) |
| 1913 | && !strcmp (TYPE_NAME (base), TYPE_NAME (dclass))) |
| 1914 | return 1; |
| 1915 | |
| 1916 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) |
| 1917 | if (is_ancestor (base, TYPE_BASECLASS (dclass, i))) |
| 1918 | return 1; |
| 1919 | |
| 1920 | return 0; |
| 1921 | } |
| 1922 | \f |
| 1923 | |
| 1924 | |
| 1925 | /* Functions for overload resolution begin here */ |
| 1926 | |
| 1927 | /* Compare two badness vectors A and B and return the result. |
| 1928 | 0 => A and B are identical |
| 1929 | 1 => A and B are incomparable |
| 1930 | 2 => A is better than B |
| 1931 | 3 => A is worse than B */ |
| 1932 | |
| 1933 | int |
| 1934 | compare_badness (struct badness_vector *a, struct badness_vector *b) |
| 1935 | { |
| 1936 | int i; |
| 1937 | int tmp; |
| 1938 | short found_pos = 0; /* any positives in c? */ |
| 1939 | short found_neg = 0; /* any negatives in c? */ |
| 1940 | |
| 1941 | /* differing lengths => incomparable */ |
| 1942 | if (a->length != b->length) |
| 1943 | return 1; |
| 1944 | |
| 1945 | /* Subtract b from a */ |
| 1946 | for (i = 0; i < a->length; i++) |
| 1947 | { |
| 1948 | tmp = a->rank[i] - b->rank[i]; |
| 1949 | if (tmp > 0) |
| 1950 | found_pos = 1; |
| 1951 | else if (tmp < 0) |
| 1952 | found_neg = 1; |
| 1953 | } |
| 1954 | |
| 1955 | if (found_pos) |
| 1956 | { |
| 1957 | if (found_neg) |
| 1958 | return 1; /* incomparable */ |
| 1959 | else |
| 1960 | return 3; /* A > B */ |
| 1961 | } |
| 1962 | else |
| 1963 | /* no positives */ |
| 1964 | { |
| 1965 | if (found_neg) |
| 1966 | return 2; /* A < B */ |
| 1967 | else |
| 1968 | return 0; /* A == B */ |
| 1969 | } |
| 1970 | } |
| 1971 | |
| 1972 | /* Rank a function by comparing its parameter types (PARMS, length |
| 1973 | NPARMS), to the types of an argument list (ARGS, length NARGS). |
| 1974 | Return a pointer to a badness vector. This has NARGS + 1 |
| 1975 | entries. */ |
| 1976 | |
| 1977 | struct badness_vector * |
| 1978 | rank_function (struct type **parms, int nparms, |
| 1979 | struct type **args, int nargs) |
| 1980 | { |
| 1981 | int i; |
| 1982 | struct badness_vector *bv; |
| 1983 | int min_len = nparms < nargs ? nparms : nargs; |
| 1984 | |
| 1985 | bv = xmalloc (sizeof (struct badness_vector)); |
| 1986 | bv->length = nargs + 1; /* add 1 for the length-match rank */ |
| 1987 | bv->rank = xmalloc ((nargs + 1) * sizeof (int)); |
| 1988 | |
| 1989 | /* First compare the lengths of the supplied lists. |
| 1990 | If there is a mismatch, set it to a high value. */ |
| 1991 | |
| 1992 | /* pai/1997-06-03 FIXME: when we have debug info about default |
| 1993 | arguments and ellipsis parameter lists, we should consider those |
| 1994 | and rank the length-match more finely. */ |
| 1995 | |
| 1996 | LENGTH_MATCH (bv) = (nargs != nparms) ? LENGTH_MISMATCH_BADNESS : 0; |
| 1997 | |
| 1998 | /* Now rank all the parameters of the candidate function */ |
| 1999 | for (i = 1; i <= min_len; i++) |
| 2000 | bv->rank[i] = rank_one_type (parms[i-1], args[i-1]); |
| 2001 | |
| 2002 | /* If more arguments than parameters, add dummy entries */ |
| 2003 | for (i = min_len + 1; i <= nargs; i++) |
| 2004 | bv->rank[i] = TOO_FEW_PARAMS_BADNESS; |
| 2005 | |
| 2006 | return bv; |
| 2007 | } |
| 2008 | |
| 2009 | /* Compare the names of two integer types, assuming that any sign |
| 2010 | qualifiers have been checked already. We do it this way because |
| 2011 | there may be an "int" in the name of one of the types. */ |
| 2012 | |
| 2013 | static int |
| 2014 | integer_types_same_name_p (const char *first, const char *second) |
| 2015 | { |
| 2016 | int first_p, second_p; |
| 2017 | |
| 2018 | /* If both are shorts, return 1; if neither is a short, keep |
| 2019 | checking. */ |
| 2020 | first_p = (strstr (first, "short") != NULL); |
| 2021 | second_p = (strstr (second, "short") != NULL); |
| 2022 | if (first_p && second_p) |
| 2023 | return 1; |
| 2024 | if (first_p || second_p) |
| 2025 | return 0; |
| 2026 | |
| 2027 | /* Likewise for long. */ |
| 2028 | first_p = (strstr (first, "long") != NULL); |
| 2029 | second_p = (strstr (second, "long") != NULL); |
| 2030 | if (first_p && second_p) |
| 2031 | return 1; |
| 2032 | if (first_p || second_p) |
| 2033 | return 0; |
| 2034 | |
| 2035 | /* Likewise for char. */ |
| 2036 | first_p = (strstr (first, "char") != NULL); |
| 2037 | second_p = (strstr (second, "char") != NULL); |
| 2038 | if (first_p && second_p) |
| 2039 | return 1; |
| 2040 | if (first_p || second_p) |
| 2041 | return 0; |
| 2042 | |
| 2043 | /* They must both be ints. */ |
| 2044 | return 1; |
| 2045 | } |
| 2046 | |
| 2047 | /* Compare one type (PARM) for compatibility with another (ARG). |
| 2048 | * PARM is intended to be the parameter type of a function; and |
| 2049 | * ARG is the supplied argument's type. This function tests if |
| 2050 | * the latter can be converted to the former. |
| 2051 | * |
| 2052 | * Return 0 if they are identical types; |
| 2053 | * Otherwise, return an integer which corresponds to how compatible |
| 2054 | * PARM is to ARG. The higher the return value, the worse the match. |
| 2055 | * Generally the "bad" conversions are all uniformly assigned a 100. */ |
| 2056 | |
| 2057 | int |
| 2058 | rank_one_type (struct type *parm, struct type *arg) |
| 2059 | { |
| 2060 | /* Identical type pointers. */ |
| 2061 | /* However, this still doesn't catch all cases of same type for arg |
| 2062 | and param. The reason is that builtin types are different from |
| 2063 | the same ones constructed from the object. */ |
| 2064 | if (parm == arg) |
| 2065 | return 0; |
| 2066 | |
| 2067 | /* Resolve typedefs */ |
| 2068 | if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF) |
| 2069 | parm = check_typedef (parm); |
| 2070 | if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF) |
| 2071 | arg = check_typedef (arg); |
| 2072 | |
| 2073 | /* |
| 2074 | Well, damnit, if the names are exactly the same, I'll say they |
| 2075 | are exactly the same. This happens when we generate method |
| 2076 | stubs. The types won't point to the same address, but they |
| 2077 | really are the same. |
| 2078 | */ |
| 2079 | |
| 2080 | if (TYPE_NAME (parm) && TYPE_NAME (arg) |
| 2081 | && !strcmp (TYPE_NAME (parm), TYPE_NAME (arg))) |
| 2082 | return 0; |
| 2083 | |
| 2084 | /* Check if identical after resolving typedefs. */ |
| 2085 | if (parm == arg) |
| 2086 | return 0; |
| 2087 | |
| 2088 | /* See through references, since we can almost make non-references |
| 2089 | references. */ |
| 2090 | if (TYPE_CODE (arg) == TYPE_CODE_REF) |
| 2091 | return (rank_one_type (parm, TYPE_TARGET_TYPE (arg)) |
| 2092 | + REFERENCE_CONVERSION_BADNESS); |
| 2093 | if (TYPE_CODE (parm) == TYPE_CODE_REF) |
| 2094 | return (rank_one_type (TYPE_TARGET_TYPE (parm), arg) |
| 2095 | + REFERENCE_CONVERSION_BADNESS); |
| 2096 | if (overload_debug) |
| 2097 | /* Debugging only. */ |
| 2098 | fprintf_filtered (gdb_stderr, |
| 2099 | "------ Arg is %s [%d], parm is %s [%d]\n", |
| 2100 | TYPE_NAME (arg), TYPE_CODE (arg), |
| 2101 | TYPE_NAME (parm), TYPE_CODE (parm)); |
| 2102 | |
| 2103 | /* x -> y means arg of type x being supplied for parameter of type y */ |
| 2104 | |
| 2105 | switch (TYPE_CODE (parm)) |
| 2106 | { |
| 2107 | case TYPE_CODE_PTR: |
| 2108 | switch (TYPE_CODE (arg)) |
| 2109 | { |
| 2110 | case TYPE_CODE_PTR: |
| 2111 | if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID) |
| 2112 | return VOID_PTR_CONVERSION_BADNESS; |
| 2113 | else |
| 2114 | return rank_one_type (TYPE_TARGET_TYPE (parm), |
| 2115 | TYPE_TARGET_TYPE (arg)); |
| 2116 | case TYPE_CODE_ARRAY: |
| 2117 | return rank_one_type (TYPE_TARGET_TYPE (parm), |
| 2118 | TYPE_TARGET_TYPE (arg)); |
| 2119 | case TYPE_CODE_FUNC: |
| 2120 | return rank_one_type (TYPE_TARGET_TYPE (parm), arg); |
| 2121 | case TYPE_CODE_INT: |
| 2122 | case TYPE_CODE_ENUM: |
| 2123 | case TYPE_CODE_FLAGS: |
| 2124 | case TYPE_CODE_CHAR: |
| 2125 | case TYPE_CODE_RANGE: |
| 2126 | case TYPE_CODE_BOOL: |
| 2127 | return POINTER_CONVERSION_BADNESS; |
| 2128 | default: |
| 2129 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2130 | } |
| 2131 | case TYPE_CODE_ARRAY: |
| 2132 | switch (TYPE_CODE (arg)) |
| 2133 | { |
| 2134 | case TYPE_CODE_PTR: |
| 2135 | case TYPE_CODE_ARRAY: |
| 2136 | return rank_one_type (TYPE_TARGET_TYPE (parm), |
| 2137 | TYPE_TARGET_TYPE (arg)); |
| 2138 | default: |
| 2139 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2140 | } |
| 2141 | case TYPE_CODE_FUNC: |
| 2142 | switch (TYPE_CODE (arg)) |
| 2143 | { |
| 2144 | case TYPE_CODE_PTR: /* funcptr -> func */ |
| 2145 | return rank_one_type (parm, TYPE_TARGET_TYPE (arg)); |
| 2146 | default: |
| 2147 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2148 | } |
| 2149 | case TYPE_CODE_INT: |
| 2150 | switch (TYPE_CODE (arg)) |
| 2151 | { |
| 2152 | case TYPE_CODE_INT: |
| 2153 | if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) |
| 2154 | { |
| 2155 | /* Deal with signed, unsigned, and plain chars and |
| 2156 | signed and unsigned ints. */ |
| 2157 | if (TYPE_NOSIGN (parm)) |
| 2158 | { |
| 2159 | /* This case only for character types */ |
| 2160 | if (TYPE_NOSIGN (arg)) |
| 2161 | return 0; /* plain char -> plain char */ |
| 2162 | else /* signed/unsigned char -> plain char */ |
| 2163 | return INTEGER_CONVERSION_BADNESS; |
| 2164 | } |
| 2165 | else if (TYPE_UNSIGNED (parm)) |
| 2166 | { |
| 2167 | if (TYPE_UNSIGNED (arg)) |
| 2168 | { |
| 2169 | /* unsigned int -> unsigned int, or |
| 2170 | unsigned long -> unsigned long */ |
| 2171 | if (integer_types_same_name_p (TYPE_NAME (parm), |
| 2172 | TYPE_NAME (arg))) |
| 2173 | return 0; |
| 2174 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
| 2175 | "int") |
| 2176 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 2177 | "long")) |
| 2178 | return INTEGER_PROMOTION_BADNESS; /* unsigned int -> unsigned long */ |
| 2179 | else |
| 2180 | return INTEGER_CONVERSION_BADNESS; /* unsigned long -> unsigned int */ |
| 2181 | } |
| 2182 | else |
| 2183 | { |
| 2184 | if (integer_types_same_name_p (TYPE_NAME (arg), |
| 2185 | "long") |
| 2186 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 2187 | "int")) |
| 2188 | return INTEGER_CONVERSION_BADNESS; /* signed long -> unsigned int */ |
| 2189 | else |
| 2190 | return INTEGER_CONVERSION_BADNESS; /* signed int/long -> unsigned int/long */ |
| 2191 | } |
| 2192 | } |
| 2193 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) |
| 2194 | { |
| 2195 | if (integer_types_same_name_p (TYPE_NAME (parm), |
| 2196 | TYPE_NAME (arg))) |
| 2197 | return 0; |
| 2198 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
| 2199 | "int") |
| 2200 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 2201 | "long")) |
| 2202 | return INTEGER_PROMOTION_BADNESS; |
| 2203 | else |
| 2204 | return INTEGER_CONVERSION_BADNESS; |
| 2205 | } |
| 2206 | else |
| 2207 | return INTEGER_CONVERSION_BADNESS; |
| 2208 | } |
| 2209 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 2210 | return INTEGER_PROMOTION_BADNESS; |
| 2211 | else |
| 2212 | return INTEGER_CONVERSION_BADNESS; |
| 2213 | case TYPE_CODE_ENUM: |
| 2214 | case TYPE_CODE_FLAGS: |
| 2215 | case TYPE_CODE_CHAR: |
| 2216 | case TYPE_CODE_RANGE: |
| 2217 | case TYPE_CODE_BOOL: |
| 2218 | return INTEGER_PROMOTION_BADNESS; |
| 2219 | case TYPE_CODE_FLT: |
| 2220 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2221 | case TYPE_CODE_PTR: |
| 2222 | return NS_POINTER_CONVERSION_BADNESS; |
| 2223 | default: |
| 2224 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2225 | } |
| 2226 | break; |
| 2227 | case TYPE_CODE_ENUM: |
| 2228 | switch (TYPE_CODE (arg)) |
| 2229 | { |
| 2230 | case TYPE_CODE_INT: |
| 2231 | case TYPE_CODE_CHAR: |
| 2232 | case TYPE_CODE_RANGE: |
| 2233 | case TYPE_CODE_BOOL: |
| 2234 | case TYPE_CODE_ENUM: |
| 2235 | return INTEGER_CONVERSION_BADNESS; |
| 2236 | case TYPE_CODE_FLT: |
| 2237 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2238 | default: |
| 2239 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2240 | } |
| 2241 | break; |
| 2242 | case TYPE_CODE_CHAR: |
| 2243 | switch (TYPE_CODE (arg)) |
| 2244 | { |
| 2245 | case TYPE_CODE_RANGE: |
| 2246 | case TYPE_CODE_BOOL: |
| 2247 | case TYPE_CODE_ENUM: |
| 2248 | return INTEGER_CONVERSION_BADNESS; |
| 2249 | case TYPE_CODE_FLT: |
| 2250 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2251 | case TYPE_CODE_INT: |
| 2252 | if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm)) |
| 2253 | return INTEGER_CONVERSION_BADNESS; |
| 2254 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 2255 | return INTEGER_PROMOTION_BADNESS; |
| 2256 | /* >>> !! else fall through !! <<< */ |
| 2257 | case TYPE_CODE_CHAR: |
| 2258 | /* Deal with signed, unsigned, and plain chars for C++ and |
| 2259 | with int cases falling through from previous case. */ |
| 2260 | if (TYPE_NOSIGN (parm)) |
| 2261 | { |
| 2262 | if (TYPE_NOSIGN (arg)) |
| 2263 | return 0; |
| 2264 | else |
| 2265 | return INTEGER_CONVERSION_BADNESS; |
| 2266 | } |
| 2267 | else if (TYPE_UNSIGNED (parm)) |
| 2268 | { |
| 2269 | if (TYPE_UNSIGNED (arg)) |
| 2270 | return 0; |
| 2271 | else |
| 2272 | return INTEGER_PROMOTION_BADNESS; |
| 2273 | } |
| 2274 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) |
| 2275 | return 0; |
| 2276 | else |
| 2277 | return INTEGER_CONVERSION_BADNESS; |
| 2278 | default: |
| 2279 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2280 | } |
| 2281 | break; |
| 2282 | case TYPE_CODE_RANGE: |
| 2283 | switch (TYPE_CODE (arg)) |
| 2284 | { |
| 2285 | case TYPE_CODE_INT: |
| 2286 | case TYPE_CODE_CHAR: |
| 2287 | case TYPE_CODE_RANGE: |
| 2288 | case TYPE_CODE_BOOL: |
| 2289 | case TYPE_CODE_ENUM: |
| 2290 | return INTEGER_CONVERSION_BADNESS; |
| 2291 | case TYPE_CODE_FLT: |
| 2292 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2293 | default: |
| 2294 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2295 | } |
| 2296 | break; |
| 2297 | case TYPE_CODE_BOOL: |
| 2298 | switch (TYPE_CODE (arg)) |
| 2299 | { |
| 2300 | case TYPE_CODE_INT: |
| 2301 | case TYPE_CODE_CHAR: |
| 2302 | case TYPE_CODE_RANGE: |
| 2303 | case TYPE_CODE_ENUM: |
| 2304 | case TYPE_CODE_FLT: |
| 2305 | case TYPE_CODE_PTR: |
| 2306 | return BOOLEAN_CONVERSION_BADNESS; |
| 2307 | case TYPE_CODE_BOOL: |
| 2308 | return 0; |
| 2309 | default: |
| 2310 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2311 | } |
| 2312 | break; |
| 2313 | case TYPE_CODE_FLT: |
| 2314 | switch (TYPE_CODE (arg)) |
| 2315 | { |
| 2316 | case TYPE_CODE_FLT: |
| 2317 | if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 2318 | return FLOAT_PROMOTION_BADNESS; |
| 2319 | else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) |
| 2320 | return 0; |
| 2321 | else |
| 2322 | return FLOAT_CONVERSION_BADNESS; |
| 2323 | case TYPE_CODE_INT: |
| 2324 | case TYPE_CODE_BOOL: |
| 2325 | case TYPE_CODE_ENUM: |
| 2326 | case TYPE_CODE_RANGE: |
| 2327 | case TYPE_CODE_CHAR: |
| 2328 | return INT_FLOAT_CONVERSION_BADNESS; |
| 2329 | default: |
| 2330 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2331 | } |
| 2332 | break; |
| 2333 | case TYPE_CODE_COMPLEX: |
| 2334 | switch (TYPE_CODE (arg)) |
| 2335 | { /* Strictly not needed for C++, but... */ |
| 2336 | case TYPE_CODE_FLT: |
| 2337 | return FLOAT_PROMOTION_BADNESS; |
| 2338 | case TYPE_CODE_COMPLEX: |
| 2339 | return 0; |
| 2340 | default: |
| 2341 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2342 | } |
| 2343 | break; |
| 2344 | case TYPE_CODE_STRUCT: |
| 2345 | /* currently same as TYPE_CODE_CLASS */ |
| 2346 | switch (TYPE_CODE (arg)) |
| 2347 | { |
| 2348 | case TYPE_CODE_STRUCT: |
| 2349 | /* Check for derivation */ |
| 2350 | if (is_ancestor (parm, arg)) |
| 2351 | return BASE_CONVERSION_BADNESS; |
| 2352 | /* else fall through */ |
| 2353 | default: |
| 2354 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2355 | } |
| 2356 | break; |
| 2357 | case TYPE_CODE_UNION: |
| 2358 | switch (TYPE_CODE (arg)) |
| 2359 | { |
| 2360 | case TYPE_CODE_UNION: |
| 2361 | default: |
| 2362 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2363 | } |
| 2364 | break; |
| 2365 | case TYPE_CODE_MEMBERPTR: |
| 2366 | switch (TYPE_CODE (arg)) |
| 2367 | { |
| 2368 | default: |
| 2369 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2370 | } |
| 2371 | break; |
| 2372 | case TYPE_CODE_METHOD: |
| 2373 | switch (TYPE_CODE (arg)) |
| 2374 | { |
| 2375 | |
| 2376 | default: |
| 2377 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2378 | } |
| 2379 | break; |
| 2380 | case TYPE_CODE_REF: |
| 2381 | switch (TYPE_CODE (arg)) |
| 2382 | { |
| 2383 | |
| 2384 | default: |
| 2385 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2386 | } |
| 2387 | |
| 2388 | break; |
| 2389 | case TYPE_CODE_SET: |
| 2390 | switch (TYPE_CODE (arg)) |
| 2391 | { |
| 2392 | /* Not in C++ */ |
| 2393 | case TYPE_CODE_SET: |
| 2394 | return rank_one_type (TYPE_FIELD_TYPE (parm, 0), |
| 2395 | TYPE_FIELD_TYPE (arg, 0)); |
| 2396 | default: |
| 2397 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2398 | } |
| 2399 | break; |
| 2400 | case TYPE_CODE_VOID: |
| 2401 | default: |
| 2402 | return INCOMPATIBLE_TYPE_BADNESS; |
| 2403 | } /* switch (TYPE_CODE (arg)) */ |
| 2404 | } |
| 2405 | |
| 2406 | |
| 2407 | /* End of functions for overload resolution */ |
| 2408 | |
| 2409 | static void |
| 2410 | print_bit_vector (B_TYPE *bits, int nbits) |
| 2411 | { |
| 2412 | int bitno; |
| 2413 | |
| 2414 | for (bitno = 0; bitno < nbits; bitno++) |
| 2415 | { |
| 2416 | if ((bitno % 8) == 0) |
| 2417 | { |
| 2418 | puts_filtered (" "); |
| 2419 | } |
| 2420 | if (B_TST (bits, bitno)) |
| 2421 | printf_filtered (("1")); |
| 2422 | else |
| 2423 | printf_filtered (("0")); |
| 2424 | } |
| 2425 | } |
| 2426 | |
| 2427 | /* Note the first arg should be the "this" pointer, we may not want to |
| 2428 | include it since we may get into a infinitely recursive |
| 2429 | situation. */ |
| 2430 | |
| 2431 | static void |
| 2432 | print_arg_types (struct field *args, int nargs, int spaces) |
| 2433 | { |
| 2434 | if (args != NULL) |
| 2435 | { |
| 2436 | int i; |
| 2437 | |
| 2438 | for (i = 0; i < nargs; i++) |
| 2439 | recursive_dump_type (args[i].type, spaces + 2); |
| 2440 | } |
| 2441 | } |
| 2442 | |
| 2443 | int |
| 2444 | field_is_static (struct field *f) |
| 2445 | { |
| 2446 | /* "static" fields are the fields whose location is not relative |
| 2447 | to the address of the enclosing struct. It would be nice to |
| 2448 | have a dedicated flag that would be set for static fields when |
| 2449 | the type is being created. But in practice, checking the field |
| 2450 | loc_kind should give us an accurate answer (at least as long as |
| 2451 | we assume that DWARF block locations are not going to be used |
| 2452 | for static fields). FIXME? */ |
| 2453 | return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME |
| 2454 | || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR); |
| 2455 | } |
| 2456 | |
| 2457 | static void |
| 2458 | dump_fn_fieldlists (struct type *type, int spaces) |
| 2459 | { |
| 2460 | int method_idx; |
| 2461 | int overload_idx; |
| 2462 | struct fn_field *f; |
| 2463 | |
| 2464 | printfi_filtered (spaces, "fn_fieldlists "); |
| 2465 | gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout); |
| 2466 | printf_filtered ("\n"); |
| 2467 | for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++) |
| 2468 | { |
| 2469 | f = TYPE_FN_FIELDLIST1 (type, method_idx); |
| 2470 | printfi_filtered (spaces + 2, "[%d] name '%s' (", |
| 2471 | method_idx, |
| 2472 | TYPE_FN_FIELDLIST_NAME (type, method_idx)); |
| 2473 | gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx), |
| 2474 | gdb_stdout); |
| 2475 | printf_filtered (_(") length %d\n"), |
| 2476 | TYPE_FN_FIELDLIST_LENGTH (type, method_idx)); |
| 2477 | for (overload_idx = 0; |
| 2478 | overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx); |
| 2479 | overload_idx++) |
| 2480 | { |
| 2481 | printfi_filtered (spaces + 4, "[%d] physname '%s' (", |
| 2482 | overload_idx, |
| 2483 | TYPE_FN_FIELD_PHYSNAME (f, overload_idx)); |
| 2484 | gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx), |
| 2485 | gdb_stdout); |
| 2486 | printf_filtered (")\n"); |
| 2487 | printfi_filtered (spaces + 8, "type "); |
| 2488 | gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx), |
| 2489 | gdb_stdout); |
| 2490 | printf_filtered ("\n"); |
| 2491 | |
| 2492 | recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx), |
| 2493 | spaces + 8 + 2); |
| 2494 | |
| 2495 | printfi_filtered (spaces + 8, "args "); |
| 2496 | gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx), |
| 2497 | gdb_stdout); |
| 2498 | printf_filtered ("\n"); |
| 2499 | |
| 2500 | print_arg_types (TYPE_FN_FIELD_ARGS (f, overload_idx), |
| 2501 | TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, |
| 2502 | overload_idx)), |
| 2503 | spaces); |
| 2504 | printfi_filtered (spaces + 8, "fcontext "); |
| 2505 | gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx), |
| 2506 | gdb_stdout); |
| 2507 | printf_filtered ("\n"); |
| 2508 | |
| 2509 | printfi_filtered (spaces + 8, "is_const %d\n", |
| 2510 | TYPE_FN_FIELD_CONST (f, overload_idx)); |
| 2511 | printfi_filtered (spaces + 8, "is_volatile %d\n", |
| 2512 | TYPE_FN_FIELD_VOLATILE (f, overload_idx)); |
| 2513 | printfi_filtered (spaces + 8, "is_private %d\n", |
| 2514 | TYPE_FN_FIELD_PRIVATE (f, overload_idx)); |
| 2515 | printfi_filtered (spaces + 8, "is_protected %d\n", |
| 2516 | TYPE_FN_FIELD_PROTECTED (f, overload_idx)); |
| 2517 | printfi_filtered (spaces + 8, "is_stub %d\n", |
| 2518 | TYPE_FN_FIELD_STUB (f, overload_idx)); |
| 2519 | printfi_filtered (spaces + 8, "voffset %u\n", |
| 2520 | TYPE_FN_FIELD_VOFFSET (f, overload_idx)); |
| 2521 | } |
| 2522 | } |
| 2523 | } |
| 2524 | |
| 2525 | static void |
| 2526 | print_cplus_stuff (struct type *type, int spaces) |
| 2527 | { |
| 2528 | printfi_filtered (spaces, "n_baseclasses %d\n", |
| 2529 | TYPE_N_BASECLASSES (type)); |
| 2530 | printfi_filtered (spaces, "nfn_fields %d\n", |
| 2531 | TYPE_NFN_FIELDS (type)); |
| 2532 | printfi_filtered (spaces, "nfn_fields_total %d\n", |
| 2533 | TYPE_NFN_FIELDS_TOTAL (type)); |
| 2534 | if (TYPE_N_BASECLASSES (type) > 0) |
| 2535 | { |
| 2536 | printfi_filtered (spaces, "virtual_field_bits (%d bits at *", |
| 2537 | TYPE_N_BASECLASSES (type)); |
| 2538 | gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type), |
| 2539 | gdb_stdout); |
| 2540 | printf_filtered (")"); |
| 2541 | |
| 2542 | print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type), |
| 2543 | TYPE_N_BASECLASSES (type)); |
| 2544 | puts_filtered ("\n"); |
| 2545 | } |
| 2546 | if (TYPE_NFIELDS (type) > 0) |
| 2547 | { |
| 2548 | if (TYPE_FIELD_PRIVATE_BITS (type) != NULL) |
| 2549 | { |
| 2550 | printfi_filtered (spaces, |
| 2551 | "private_field_bits (%d bits at *", |
| 2552 | TYPE_NFIELDS (type)); |
| 2553 | gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type), |
| 2554 | gdb_stdout); |
| 2555 | printf_filtered (")"); |
| 2556 | print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type), |
| 2557 | TYPE_NFIELDS (type)); |
| 2558 | puts_filtered ("\n"); |
| 2559 | } |
| 2560 | if (TYPE_FIELD_PROTECTED_BITS (type) != NULL) |
| 2561 | { |
| 2562 | printfi_filtered (spaces, |
| 2563 | "protected_field_bits (%d bits at *", |
| 2564 | TYPE_NFIELDS (type)); |
| 2565 | gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type), |
| 2566 | gdb_stdout); |
| 2567 | printf_filtered (")"); |
| 2568 | print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type), |
| 2569 | TYPE_NFIELDS (type)); |
| 2570 | puts_filtered ("\n"); |
| 2571 | } |
| 2572 | } |
| 2573 | if (TYPE_NFN_FIELDS (type) > 0) |
| 2574 | { |
| 2575 | dump_fn_fieldlists (type, spaces); |
| 2576 | } |
| 2577 | } |
| 2578 | |
| 2579 | static struct obstack dont_print_type_obstack; |
| 2580 | |
| 2581 | void |
| 2582 | recursive_dump_type (struct type *type, int spaces) |
| 2583 | { |
| 2584 | int idx; |
| 2585 | |
| 2586 | if (spaces == 0) |
| 2587 | obstack_begin (&dont_print_type_obstack, 0); |
| 2588 | |
| 2589 | if (TYPE_NFIELDS (type) > 0 |
| 2590 | || (TYPE_CPLUS_SPECIFIC (type) && TYPE_NFN_FIELDS (type) > 0)) |
| 2591 | { |
| 2592 | struct type **first_dont_print |
| 2593 | = (struct type **) obstack_base (&dont_print_type_obstack); |
| 2594 | |
| 2595 | int i = (struct type **) |
| 2596 | obstack_next_free (&dont_print_type_obstack) - first_dont_print; |
| 2597 | |
| 2598 | while (--i >= 0) |
| 2599 | { |
| 2600 | if (type == first_dont_print[i]) |
| 2601 | { |
| 2602 | printfi_filtered (spaces, "type node "); |
| 2603 | gdb_print_host_address (type, gdb_stdout); |
| 2604 | printf_filtered (_(" <same as already seen type>\n")); |
| 2605 | return; |
| 2606 | } |
| 2607 | } |
| 2608 | |
| 2609 | obstack_ptr_grow (&dont_print_type_obstack, type); |
| 2610 | } |
| 2611 | |
| 2612 | printfi_filtered (spaces, "type node "); |
| 2613 | gdb_print_host_address (type, gdb_stdout); |
| 2614 | printf_filtered ("\n"); |
| 2615 | printfi_filtered (spaces, "name '%s' (", |
| 2616 | TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>"); |
| 2617 | gdb_print_host_address (TYPE_NAME (type), gdb_stdout); |
| 2618 | printf_filtered (")\n"); |
| 2619 | printfi_filtered (spaces, "tagname '%s' (", |
| 2620 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : "<NULL>"); |
| 2621 | gdb_print_host_address (TYPE_TAG_NAME (type), gdb_stdout); |
| 2622 | printf_filtered (")\n"); |
| 2623 | printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type)); |
| 2624 | switch (TYPE_CODE (type)) |
| 2625 | { |
| 2626 | case TYPE_CODE_UNDEF: |
| 2627 | printf_filtered ("(TYPE_CODE_UNDEF)"); |
| 2628 | break; |
| 2629 | case TYPE_CODE_PTR: |
| 2630 | printf_filtered ("(TYPE_CODE_PTR)"); |
| 2631 | break; |
| 2632 | case TYPE_CODE_ARRAY: |
| 2633 | printf_filtered ("(TYPE_CODE_ARRAY)"); |
| 2634 | break; |
| 2635 | case TYPE_CODE_STRUCT: |
| 2636 | printf_filtered ("(TYPE_CODE_STRUCT)"); |
| 2637 | break; |
| 2638 | case TYPE_CODE_UNION: |
| 2639 | printf_filtered ("(TYPE_CODE_UNION)"); |
| 2640 | break; |
| 2641 | case TYPE_CODE_ENUM: |
| 2642 | printf_filtered ("(TYPE_CODE_ENUM)"); |
| 2643 | break; |
| 2644 | case TYPE_CODE_FLAGS: |
| 2645 | printf_filtered ("(TYPE_CODE_FLAGS)"); |
| 2646 | break; |
| 2647 | case TYPE_CODE_FUNC: |
| 2648 | printf_filtered ("(TYPE_CODE_FUNC)"); |
| 2649 | break; |
| 2650 | case TYPE_CODE_INT: |
| 2651 | printf_filtered ("(TYPE_CODE_INT)"); |
| 2652 | break; |
| 2653 | case TYPE_CODE_FLT: |
| 2654 | printf_filtered ("(TYPE_CODE_FLT)"); |
| 2655 | break; |
| 2656 | case TYPE_CODE_VOID: |
| 2657 | printf_filtered ("(TYPE_CODE_VOID)"); |
| 2658 | break; |
| 2659 | case TYPE_CODE_SET: |
| 2660 | printf_filtered ("(TYPE_CODE_SET)"); |
| 2661 | break; |
| 2662 | case TYPE_CODE_RANGE: |
| 2663 | printf_filtered ("(TYPE_CODE_RANGE)"); |
| 2664 | break; |
| 2665 | case TYPE_CODE_STRING: |
| 2666 | printf_filtered ("(TYPE_CODE_STRING)"); |
| 2667 | break; |
| 2668 | case TYPE_CODE_BITSTRING: |
| 2669 | printf_filtered ("(TYPE_CODE_BITSTRING)"); |
| 2670 | break; |
| 2671 | case TYPE_CODE_ERROR: |
| 2672 | printf_filtered ("(TYPE_CODE_ERROR)"); |
| 2673 | break; |
| 2674 | case TYPE_CODE_MEMBERPTR: |
| 2675 | printf_filtered ("(TYPE_CODE_MEMBERPTR)"); |
| 2676 | break; |
| 2677 | case TYPE_CODE_METHODPTR: |
| 2678 | printf_filtered ("(TYPE_CODE_METHODPTR)"); |
| 2679 | break; |
| 2680 | case TYPE_CODE_METHOD: |
| 2681 | printf_filtered ("(TYPE_CODE_METHOD)"); |
| 2682 | break; |
| 2683 | case TYPE_CODE_REF: |
| 2684 | printf_filtered ("(TYPE_CODE_REF)"); |
| 2685 | break; |
| 2686 | case TYPE_CODE_CHAR: |
| 2687 | printf_filtered ("(TYPE_CODE_CHAR)"); |
| 2688 | break; |
| 2689 | case TYPE_CODE_BOOL: |
| 2690 | printf_filtered ("(TYPE_CODE_BOOL)"); |
| 2691 | break; |
| 2692 | case TYPE_CODE_COMPLEX: |
| 2693 | printf_filtered ("(TYPE_CODE_COMPLEX)"); |
| 2694 | break; |
| 2695 | case TYPE_CODE_TYPEDEF: |
| 2696 | printf_filtered ("(TYPE_CODE_TYPEDEF)"); |
| 2697 | break; |
| 2698 | case TYPE_CODE_TEMPLATE: |
| 2699 | printf_filtered ("(TYPE_CODE_TEMPLATE)"); |
| 2700 | break; |
| 2701 | case TYPE_CODE_TEMPLATE_ARG: |
| 2702 | printf_filtered ("(TYPE_CODE_TEMPLATE_ARG)"); |
| 2703 | break; |
| 2704 | case TYPE_CODE_NAMESPACE: |
| 2705 | printf_filtered ("(TYPE_CODE_NAMESPACE)"); |
| 2706 | break; |
| 2707 | default: |
| 2708 | printf_filtered ("(UNKNOWN TYPE CODE)"); |
| 2709 | break; |
| 2710 | } |
| 2711 | puts_filtered ("\n"); |
| 2712 | printfi_filtered (spaces, "length %d\n", TYPE_LENGTH (type)); |
| 2713 | printfi_filtered (spaces, "objfile "); |
| 2714 | gdb_print_host_address (TYPE_OBJFILE (type), gdb_stdout); |
| 2715 | printf_filtered ("\n"); |
| 2716 | printfi_filtered (spaces, "target_type "); |
| 2717 | gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout); |
| 2718 | printf_filtered ("\n"); |
| 2719 | if (TYPE_TARGET_TYPE (type) != NULL) |
| 2720 | { |
| 2721 | recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2); |
| 2722 | } |
| 2723 | printfi_filtered (spaces, "pointer_type "); |
| 2724 | gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout); |
| 2725 | printf_filtered ("\n"); |
| 2726 | printfi_filtered (spaces, "reference_type "); |
| 2727 | gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout); |
| 2728 | printf_filtered ("\n"); |
| 2729 | printfi_filtered (spaces, "type_chain "); |
| 2730 | gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout); |
| 2731 | printf_filtered ("\n"); |
| 2732 | printfi_filtered (spaces, "instance_flags 0x%x", |
| 2733 | TYPE_INSTANCE_FLAGS (type)); |
| 2734 | if (TYPE_CONST (type)) |
| 2735 | { |
| 2736 | puts_filtered (" TYPE_FLAG_CONST"); |
| 2737 | } |
| 2738 | if (TYPE_VOLATILE (type)) |
| 2739 | { |
| 2740 | puts_filtered (" TYPE_FLAG_VOLATILE"); |
| 2741 | } |
| 2742 | if (TYPE_CODE_SPACE (type)) |
| 2743 | { |
| 2744 | puts_filtered (" TYPE_FLAG_CODE_SPACE"); |
| 2745 | } |
| 2746 | if (TYPE_DATA_SPACE (type)) |
| 2747 | { |
| 2748 | puts_filtered (" TYPE_FLAG_DATA_SPACE"); |
| 2749 | } |
| 2750 | if (TYPE_ADDRESS_CLASS_1 (type)) |
| 2751 | { |
| 2752 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_1"); |
| 2753 | } |
| 2754 | if (TYPE_ADDRESS_CLASS_2 (type)) |
| 2755 | { |
| 2756 | puts_filtered (" TYPE_FLAG_ADDRESS_CLASS_2"); |
| 2757 | } |
| 2758 | puts_filtered ("\n"); |
| 2759 | |
| 2760 | printfi_filtered (spaces, "flags"); |
| 2761 | if (TYPE_UNSIGNED (type)) |
| 2762 | { |
| 2763 | puts_filtered (" TYPE_FLAG_UNSIGNED"); |
| 2764 | } |
| 2765 | if (TYPE_NOSIGN (type)) |
| 2766 | { |
| 2767 | puts_filtered (" TYPE_FLAG_NOSIGN"); |
| 2768 | } |
| 2769 | if (TYPE_STUB (type)) |
| 2770 | { |
| 2771 | puts_filtered (" TYPE_FLAG_STUB"); |
| 2772 | } |
| 2773 | if (TYPE_TARGET_STUB (type)) |
| 2774 | { |
| 2775 | puts_filtered (" TYPE_FLAG_TARGET_STUB"); |
| 2776 | } |
| 2777 | if (TYPE_STATIC (type)) |
| 2778 | { |
| 2779 | puts_filtered (" TYPE_FLAG_STATIC"); |
| 2780 | } |
| 2781 | if (TYPE_PROTOTYPED (type)) |
| 2782 | { |
| 2783 | puts_filtered (" TYPE_FLAG_PROTOTYPED"); |
| 2784 | } |
| 2785 | if (TYPE_INCOMPLETE (type)) |
| 2786 | { |
| 2787 | puts_filtered (" TYPE_FLAG_INCOMPLETE"); |
| 2788 | } |
| 2789 | if (TYPE_VARARGS (type)) |
| 2790 | { |
| 2791 | puts_filtered (" TYPE_FLAG_VARARGS"); |
| 2792 | } |
| 2793 | /* This is used for things like AltiVec registers on ppc. Gcc emits |
| 2794 | an attribute for the array type, which tells whether or not we |
| 2795 | have a vector, instead of a regular array. */ |
| 2796 | if (TYPE_VECTOR (type)) |
| 2797 | { |
| 2798 | puts_filtered (" TYPE_FLAG_VECTOR"); |
| 2799 | } |
| 2800 | if (TYPE_FIXED_INSTANCE (type)) |
| 2801 | { |
| 2802 | puts_filtered (" TYPE_FIXED_INSTANCE"); |
| 2803 | } |
| 2804 | if (TYPE_STUB_SUPPORTED (type)) |
| 2805 | { |
| 2806 | puts_filtered (" TYPE_STUB_SUPPORTED"); |
| 2807 | } |
| 2808 | if (TYPE_NOTTEXT (type)) |
| 2809 | { |
| 2810 | puts_filtered (" TYPE_NOTTEXT"); |
| 2811 | } |
| 2812 | puts_filtered ("\n"); |
| 2813 | printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type)); |
| 2814 | gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout); |
| 2815 | puts_filtered ("\n"); |
| 2816 | for (idx = 0; idx < TYPE_NFIELDS (type); idx++) |
| 2817 | { |
| 2818 | printfi_filtered (spaces + 2, |
| 2819 | "[%d] bitpos %d bitsize %d type ", |
| 2820 | idx, TYPE_FIELD_BITPOS (type, idx), |
| 2821 | TYPE_FIELD_BITSIZE (type, idx)); |
| 2822 | gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout); |
| 2823 | printf_filtered (" name '%s' (", |
| 2824 | TYPE_FIELD_NAME (type, idx) != NULL |
| 2825 | ? TYPE_FIELD_NAME (type, idx) |
| 2826 | : "<NULL>"); |
| 2827 | gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout); |
| 2828 | printf_filtered (")\n"); |
| 2829 | if (TYPE_FIELD_TYPE (type, idx) != NULL) |
| 2830 | { |
| 2831 | recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4); |
| 2832 | } |
| 2833 | } |
| 2834 | printfi_filtered (spaces, "vptr_basetype "); |
| 2835 | gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout); |
| 2836 | puts_filtered ("\n"); |
| 2837 | if (TYPE_VPTR_BASETYPE (type) != NULL) |
| 2838 | { |
| 2839 | recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2); |
| 2840 | } |
| 2841 | printfi_filtered (spaces, "vptr_fieldno %d\n", |
| 2842 | TYPE_VPTR_FIELDNO (type)); |
| 2843 | switch (TYPE_CODE (type)) |
| 2844 | { |
| 2845 | case TYPE_CODE_STRUCT: |
| 2846 | printfi_filtered (spaces, "cplus_stuff "); |
| 2847 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), |
| 2848 | gdb_stdout); |
| 2849 | puts_filtered ("\n"); |
| 2850 | print_cplus_stuff (type, spaces); |
| 2851 | break; |
| 2852 | |
| 2853 | case TYPE_CODE_FLT: |
| 2854 | printfi_filtered (spaces, "floatformat "); |
| 2855 | if (TYPE_FLOATFORMAT (type) == NULL) |
| 2856 | puts_filtered ("(null)"); |
| 2857 | else |
| 2858 | { |
| 2859 | puts_filtered ("{ "); |
| 2860 | if (TYPE_FLOATFORMAT (type)[0] == NULL |
| 2861 | || TYPE_FLOATFORMAT (type)[0]->name == NULL) |
| 2862 | puts_filtered ("(null)"); |
| 2863 | else |
| 2864 | puts_filtered (TYPE_FLOATFORMAT (type)[0]->name); |
| 2865 | |
| 2866 | puts_filtered (", "); |
| 2867 | if (TYPE_FLOATFORMAT (type)[1] == NULL |
| 2868 | || TYPE_FLOATFORMAT (type)[1]->name == NULL) |
| 2869 | puts_filtered ("(null)"); |
| 2870 | else |
| 2871 | puts_filtered (TYPE_FLOATFORMAT (type)[1]->name); |
| 2872 | |
| 2873 | puts_filtered (" }"); |
| 2874 | } |
| 2875 | puts_filtered ("\n"); |
| 2876 | break; |
| 2877 | |
| 2878 | default: |
| 2879 | /* We have to pick one of the union types to be able print and |
| 2880 | test the value. Pick cplus_struct_type, even though we know |
| 2881 | it isn't any particular one. */ |
| 2882 | printfi_filtered (spaces, "type_specific "); |
| 2883 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), gdb_stdout); |
| 2884 | if (TYPE_CPLUS_SPECIFIC (type) != NULL) |
| 2885 | { |
| 2886 | printf_filtered (_(" (unknown data form)")); |
| 2887 | } |
| 2888 | printf_filtered ("\n"); |
| 2889 | break; |
| 2890 | |
| 2891 | } |
| 2892 | if (spaces == 0) |
| 2893 | obstack_free (&dont_print_type_obstack, NULL); |
| 2894 | } |
| 2895 | |
| 2896 | /* Trivial helpers for the libiberty hash table, for mapping one |
| 2897 | type to another. */ |
| 2898 | |
| 2899 | struct type_pair |
| 2900 | { |
| 2901 | struct type *old, *new; |
| 2902 | }; |
| 2903 | |
| 2904 | static hashval_t |
| 2905 | type_pair_hash (const void *item) |
| 2906 | { |
| 2907 | const struct type_pair *pair = item; |
| 2908 | return htab_hash_pointer (pair->old); |
| 2909 | } |
| 2910 | |
| 2911 | static int |
| 2912 | type_pair_eq (const void *item_lhs, const void *item_rhs) |
| 2913 | { |
| 2914 | const struct type_pair *lhs = item_lhs, *rhs = item_rhs; |
| 2915 | return lhs->old == rhs->old; |
| 2916 | } |
| 2917 | |
| 2918 | /* Allocate the hash table used by copy_type_recursive to walk |
| 2919 | types without duplicates. We use OBJFILE's obstack, because |
| 2920 | OBJFILE is about to be deleted. */ |
| 2921 | |
| 2922 | htab_t |
| 2923 | create_copied_types_hash (struct objfile *objfile) |
| 2924 | { |
| 2925 | return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq, |
| 2926 | NULL, &objfile->objfile_obstack, |
| 2927 | hashtab_obstack_allocate, |
| 2928 | dummy_obstack_deallocate); |
| 2929 | } |
| 2930 | |
| 2931 | /* Recursively copy (deep copy) TYPE, if it is associated with |
| 2932 | OBJFILE. Return a new type allocated using malloc, a saved type if |
| 2933 | we have already visited TYPE (using COPIED_TYPES), or TYPE if it is |
| 2934 | not associated with OBJFILE. */ |
| 2935 | |
| 2936 | struct type * |
| 2937 | copy_type_recursive (struct objfile *objfile, |
| 2938 | struct type *type, |
| 2939 | htab_t copied_types) |
| 2940 | { |
| 2941 | struct type_pair *stored, pair; |
| 2942 | void **slot; |
| 2943 | struct type *new_type; |
| 2944 | |
| 2945 | if (TYPE_OBJFILE (type) == NULL) |
| 2946 | return type; |
| 2947 | |
| 2948 | /* This type shouldn't be pointing to any types in other objfiles; |
| 2949 | if it did, the type might disappear unexpectedly. */ |
| 2950 | gdb_assert (TYPE_OBJFILE (type) == objfile); |
| 2951 | |
| 2952 | pair.old = type; |
| 2953 | slot = htab_find_slot (copied_types, &pair, INSERT); |
| 2954 | if (*slot != NULL) |
| 2955 | return ((struct type_pair *) *slot)->new; |
| 2956 | |
| 2957 | new_type = alloc_type (NULL); |
| 2958 | |
| 2959 | /* We must add the new type to the hash table immediately, in case |
| 2960 | we encounter this type again during a recursive call below. */ |
| 2961 | stored = obstack_alloc (&objfile->objfile_obstack, sizeof (struct type_pair)); |
| 2962 | stored->old = type; |
| 2963 | stored->new = new_type; |
| 2964 | *slot = stored; |
| 2965 | |
| 2966 | /* Copy the common fields of types. For the main type, we simply |
| 2967 | copy the entire thing and then update specific fields as needed. */ |
| 2968 | *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type); |
| 2969 | TYPE_OBJFILE (new_type) = NULL; |
| 2970 | |
| 2971 | if (TYPE_NAME (type)) |
| 2972 | TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type)); |
| 2973 | if (TYPE_TAG_NAME (type)) |
| 2974 | TYPE_TAG_NAME (new_type) = xstrdup (TYPE_TAG_NAME (type)); |
| 2975 | |
| 2976 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
| 2977 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); |
| 2978 | |
| 2979 | /* Copy the fields. */ |
| 2980 | if (TYPE_NFIELDS (type)) |
| 2981 | { |
| 2982 | int i, nfields; |
| 2983 | |
| 2984 | nfields = TYPE_NFIELDS (type); |
| 2985 | TYPE_FIELDS (new_type) = XCALLOC (nfields, struct field); |
| 2986 | for (i = 0; i < nfields; i++) |
| 2987 | { |
| 2988 | TYPE_FIELD_ARTIFICIAL (new_type, i) = |
| 2989 | TYPE_FIELD_ARTIFICIAL (type, i); |
| 2990 | TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i); |
| 2991 | if (TYPE_FIELD_TYPE (type, i)) |
| 2992 | TYPE_FIELD_TYPE (new_type, i) |
| 2993 | = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i), |
| 2994 | copied_types); |
| 2995 | if (TYPE_FIELD_NAME (type, i)) |
| 2996 | TYPE_FIELD_NAME (new_type, i) = |
| 2997 | xstrdup (TYPE_FIELD_NAME (type, i)); |
| 2998 | switch (TYPE_FIELD_LOC_KIND (type, i)) |
| 2999 | { |
| 3000 | case FIELD_LOC_KIND_BITPOS: |
| 3001 | SET_FIELD_BITPOS (TYPE_FIELD (new_type, i), |
| 3002 | TYPE_FIELD_BITPOS (type, i)); |
| 3003 | break; |
| 3004 | case FIELD_LOC_KIND_PHYSADDR: |
| 3005 | SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i), |
| 3006 | TYPE_FIELD_STATIC_PHYSADDR (type, i)); |
| 3007 | break; |
| 3008 | case FIELD_LOC_KIND_PHYSNAME: |
| 3009 | SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i), |
| 3010 | xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type, |
| 3011 | i))); |
| 3012 | break; |
| 3013 | default: |
| 3014 | internal_error (__FILE__, __LINE__, |
| 3015 | _("Unexpected type field location kind: %d"), |
| 3016 | TYPE_FIELD_LOC_KIND (type, i)); |
| 3017 | } |
| 3018 | } |
| 3019 | } |
| 3020 | |
| 3021 | /* Copy pointers to other types. */ |
| 3022 | if (TYPE_TARGET_TYPE (type)) |
| 3023 | TYPE_TARGET_TYPE (new_type) = |
| 3024 | copy_type_recursive (objfile, |
| 3025 | TYPE_TARGET_TYPE (type), |
| 3026 | copied_types); |
| 3027 | if (TYPE_VPTR_BASETYPE (type)) |
| 3028 | TYPE_VPTR_BASETYPE (new_type) = |
| 3029 | copy_type_recursive (objfile, |
| 3030 | TYPE_VPTR_BASETYPE (type), |
| 3031 | copied_types); |
| 3032 | /* Maybe copy the type_specific bits. |
| 3033 | |
| 3034 | NOTE drow/2005-12-09: We do not copy the C++-specific bits like |
| 3035 | base classes and methods. There's no fundamental reason why we |
| 3036 | can't, but at the moment it is not needed. */ |
| 3037 | |
| 3038 | if (TYPE_CODE (type) == TYPE_CODE_FLT) |
| 3039 | TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type); |
| 3040 | else if (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 3041 | || TYPE_CODE (type) == TYPE_CODE_UNION |
| 3042 | || TYPE_CODE (type) == TYPE_CODE_TEMPLATE |
| 3043 | || TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
| 3044 | INIT_CPLUS_SPECIFIC (new_type); |
| 3045 | |
| 3046 | return new_type; |
| 3047 | } |
| 3048 | |
| 3049 | /* Make a copy of the given TYPE, except that the pointer & reference |
| 3050 | types are not preserved. |
| 3051 | |
| 3052 | This function assumes that the given type has an associated objfile. |
| 3053 | This objfile is used to allocate the new type. */ |
| 3054 | |
| 3055 | struct type * |
| 3056 | copy_type (const struct type *type) |
| 3057 | { |
| 3058 | struct type *new_type; |
| 3059 | |
| 3060 | gdb_assert (TYPE_OBJFILE (type) != NULL); |
| 3061 | |
| 3062 | new_type = alloc_type (TYPE_OBJFILE (type)); |
| 3063 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
| 3064 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); |
| 3065 | memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type), |
| 3066 | sizeof (struct main_type)); |
| 3067 | |
| 3068 | return new_type; |
| 3069 | } |
| 3070 | |
| 3071 | static struct type * |
| 3072 | build_flt (int bit, char *name, const struct floatformat **floatformats) |
| 3073 | { |
| 3074 | struct type *t; |
| 3075 | |
| 3076 | if (bit == -1) |
| 3077 | { |
| 3078 | gdb_assert (floatformats != NULL); |
| 3079 | gdb_assert (floatformats[0] != NULL && floatformats[1] != NULL); |
| 3080 | bit = floatformats[0]->totalsize; |
| 3081 | } |
| 3082 | gdb_assert (bit >= 0); |
| 3083 | |
| 3084 | t = init_type (TYPE_CODE_FLT, bit / TARGET_CHAR_BIT, 0, name, NULL); |
| 3085 | TYPE_FLOATFORMAT (t) = floatformats; |
| 3086 | return t; |
| 3087 | } |
| 3088 | |
| 3089 | static struct gdbarch_data *gdbtypes_data; |
| 3090 | |
| 3091 | const struct builtin_type * |
| 3092 | builtin_type (struct gdbarch *gdbarch) |
| 3093 | { |
| 3094 | return gdbarch_data (gdbarch, gdbtypes_data); |
| 3095 | } |
| 3096 | |
| 3097 | |
| 3098 | static struct type * |
| 3099 | build_complex (int bit, char *name, struct type *target_type) |
| 3100 | { |
| 3101 | struct type *t; |
| 3102 | if (bit <= 0 || target_type == builtin_type_error) |
| 3103 | { |
| 3104 | gdb_assert (builtin_type_error != NULL); |
| 3105 | return builtin_type_error; |
| 3106 | } |
| 3107 | t = init_type (TYPE_CODE_COMPLEX, 2 * bit / TARGET_CHAR_BIT, |
| 3108 | 0, name, (struct objfile *) NULL); |
| 3109 | TYPE_TARGET_TYPE (t) = target_type; |
| 3110 | return t; |
| 3111 | } |
| 3112 | |
| 3113 | static void * |
| 3114 | gdbtypes_post_init (struct gdbarch *gdbarch) |
| 3115 | { |
| 3116 | struct builtin_type *builtin_type |
| 3117 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type); |
| 3118 | |
| 3119 | builtin_type->builtin_void = |
| 3120 | init_type (TYPE_CODE_VOID, 1, |
| 3121 | 0, |
| 3122 | "void", (struct objfile *) NULL); |
| 3123 | builtin_type->builtin_char = |
| 3124 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3125 | (TYPE_FLAG_NOSIGN |
| 3126 | | (gdbarch_char_signed (gdbarch) ? 0 : TYPE_FLAG_UNSIGNED)), |
| 3127 | "char", (struct objfile *) NULL); |
| 3128 | builtin_type->builtin_signed_char = |
| 3129 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3130 | 0, |
| 3131 | "signed char", (struct objfile *) NULL); |
| 3132 | builtin_type->builtin_unsigned_char = |
| 3133 | init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3134 | TYPE_FLAG_UNSIGNED, |
| 3135 | "unsigned char", (struct objfile *) NULL); |
| 3136 | builtin_type->builtin_short = |
| 3137 | init_type (TYPE_CODE_INT, |
| 3138 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3139 | 0, "short", (struct objfile *) NULL); |
| 3140 | builtin_type->builtin_unsigned_short = |
| 3141 | init_type (TYPE_CODE_INT, |
| 3142 | gdbarch_short_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3143 | TYPE_FLAG_UNSIGNED, "unsigned short", |
| 3144 | (struct objfile *) NULL); |
| 3145 | builtin_type->builtin_int = |
| 3146 | init_type (TYPE_CODE_INT, |
| 3147 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3148 | 0, "int", (struct objfile *) NULL); |
| 3149 | builtin_type->builtin_unsigned_int = |
| 3150 | init_type (TYPE_CODE_INT, |
| 3151 | gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3152 | TYPE_FLAG_UNSIGNED, "unsigned int", |
| 3153 | (struct objfile *) NULL); |
| 3154 | builtin_type->builtin_long = |
| 3155 | init_type (TYPE_CODE_INT, |
| 3156 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3157 | 0, "long", (struct objfile *) NULL); |
| 3158 | builtin_type->builtin_unsigned_long = |
| 3159 | init_type (TYPE_CODE_INT, |
| 3160 | gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3161 | TYPE_FLAG_UNSIGNED, "unsigned long", |
| 3162 | (struct objfile *) NULL); |
| 3163 | builtin_type->builtin_long_long = |
| 3164 | init_type (TYPE_CODE_INT, |
| 3165 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3166 | 0, "long long", (struct objfile *) NULL); |
| 3167 | builtin_type->builtin_unsigned_long_long = |
| 3168 | init_type (TYPE_CODE_INT, |
| 3169 | gdbarch_long_long_bit (gdbarch) / TARGET_CHAR_BIT, |
| 3170 | TYPE_FLAG_UNSIGNED, "unsigned long long", |
| 3171 | (struct objfile *) NULL); |
| 3172 | builtin_type->builtin_float |
| 3173 | = build_flt (gdbarch_float_bit (gdbarch), "float", |
| 3174 | gdbarch_float_format (gdbarch)); |
| 3175 | builtin_type->builtin_double |
| 3176 | = build_flt (gdbarch_double_bit (gdbarch), "double", |
| 3177 | gdbarch_double_format (gdbarch)); |
| 3178 | builtin_type->builtin_long_double |
| 3179 | = build_flt (gdbarch_long_double_bit (gdbarch), "long double", |
| 3180 | gdbarch_long_double_format (gdbarch)); |
| 3181 | builtin_type->builtin_complex |
| 3182 | = build_complex (gdbarch_float_bit (gdbarch), "complex", |
| 3183 | builtin_type->builtin_float); |
| 3184 | builtin_type->builtin_double_complex |
| 3185 | = build_complex (gdbarch_double_bit (gdbarch), "double complex", |
| 3186 | builtin_type->builtin_double); |
| 3187 | builtin_type->builtin_string = |
| 3188 | init_type (TYPE_CODE_STRING, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3189 | 0, |
| 3190 | "string", (struct objfile *) NULL); |
| 3191 | builtin_type->builtin_bool = |
| 3192 | init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3193 | 0, |
| 3194 | "bool", (struct objfile *) NULL); |
| 3195 | |
| 3196 | /* The following three are about decimal floating point types, which |
| 3197 | are 32-bits, 64-bits and 128-bits respectively. */ |
| 3198 | builtin_type->builtin_decfloat |
| 3199 | = init_type (TYPE_CODE_DECFLOAT, 32 / 8, |
| 3200 | 0, |
| 3201 | "_Decimal32", (struct objfile *) NULL); |
| 3202 | builtin_type->builtin_decdouble |
| 3203 | = init_type (TYPE_CODE_DECFLOAT, 64 / 8, |
| 3204 | 0, |
| 3205 | "_Decimal64", (struct objfile *) NULL); |
| 3206 | builtin_type->builtin_declong |
| 3207 | = init_type (TYPE_CODE_DECFLOAT, 128 / 8, |
| 3208 | 0, |
| 3209 | "_Decimal128", (struct objfile *) NULL); |
| 3210 | |
| 3211 | /* Pointer/Address types. */ |
| 3212 | |
| 3213 | /* NOTE: on some targets, addresses and pointers are not necessarily |
| 3214 | the same --- for example, on the D10V, pointers are 16 bits long, |
| 3215 | but addresses are 32 bits long. See doc/gdbint.texinfo, |
| 3216 | ``Pointers Are Not Always Addresses''. |
| 3217 | |
| 3218 | The upshot is: |
| 3219 | - gdb's `struct type' always describes the target's |
| 3220 | representation. |
| 3221 | - gdb's `struct value' objects should always hold values in |
| 3222 | target form. |
| 3223 | - gdb's CORE_ADDR values are addresses in the unified virtual |
| 3224 | address space that the assembler and linker work with. Thus, |
| 3225 | since target_read_memory takes a CORE_ADDR as an argument, it |
| 3226 | can access any memory on the target, even if the processor has |
| 3227 | separate code and data address spaces. |
| 3228 | |
| 3229 | So, for example: |
| 3230 | - If v is a value holding a D10V code pointer, its contents are |
| 3231 | in target form: a big-endian address left-shifted two bits. |
| 3232 | - If p is a D10V pointer type, TYPE_LENGTH (p) == 2, just as |
| 3233 | sizeof (void *) == 2 on the target. |
| 3234 | |
| 3235 | In this context, builtin_type->CORE_ADDR is a bit odd: it's a |
| 3236 | target type for a value the target will never see. It's only |
| 3237 | used to hold the values of (typeless) linker symbols, which are |
| 3238 | indeed in the unified virtual address space. */ |
| 3239 | |
| 3240 | builtin_type->builtin_data_ptr = |
| 3241 | make_pointer_type (builtin_type->builtin_void, NULL); |
| 3242 | builtin_type->builtin_func_ptr = |
| 3243 | lookup_pointer_type (lookup_function_type (builtin_type->builtin_void)); |
| 3244 | builtin_type->builtin_core_addr = |
| 3245 | init_type (TYPE_CODE_INT, |
| 3246 | gdbarch_addr_bit (gdbarch) / 8, |
| 3247 | TYPE_FLAG_UNSIGNED, |
| 3248 | "__CORE_ADDR", (struct objfile *) NULL); |
| 3249 | |
| 3250 | |
| 3251 | /* The following set of types is used for symbols with no |
| 3252 | debug information. */ |
| 3253 | builtin_type->nodebug_text_symbol = |
| 3254 | init_type (TYPE_CODE_FUNC, 1, 0, |
| 3255 | "<text variable, no debug info>", NULL); |
| 3256 | TYPE_TARGET_TYPE (builtin_type->nodebug_text_symbol) = |
| 3257 | builtin_type->builtin_int; |
| 3258 | builtin_type->nodebug_data_symbol = |
| 3259 | init_type (TYPE_CODE_INT, |
| 3260 | gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0, |
| 3261 | "<data variable, no debug info>", NULL); |
| 3262 | builtin_type->nodebug_unknown_symbol = |
| 3263 | init_type (TYPE_CODE_INT, 1, 0, |
| 3264 | "<variable (not text or data), no debug info>", NULL); |
| 3265 | builtin_type->nodebug_tls_symbol = |
| 3266 | init_type (TYPE_CODE_INT, |
| 3267 | gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT, 0, |
| 3268 | "<thread local variable, no debug info>", NULL); |
| 3269 | |
| 3270 | return builtin_type; |
| 3271 | } |
| 3272 | |
| 3273 | extern void _initialize_gdbtypes (void); |
| 3274 | void |
| 3275 | _initialize_gdbtypes (void) |
| 3276 | { |
| 3277 | gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init); |
| 3278 | |
| 3279 | /* FIXME: The following types are architecture-neutral. However, |
| 3280 | they contain pointer_type and reference_type fields potentially |
| 3281 | caching pointer or reference types that *are* architecture |
| 3282 | dependent. */ |
| 3283 | |
| 3284 | builtin_type_int0 = |
| 3285 | init_type (TYPE_CODE_INT, 0 / 8, |
| 3286 | 0, |
| 3287 | "int0_t", (struct objfile *) NULL); |
| 3288 | builtin_type_int8 = |
| 3289 | init_type (TYPE_CODE_INT, 8 / 8, |
| 3290 | TYPE_FLAG_NOTTEXT, |
| 3291 | "int8_t", (struct objfile *) NULL); |
| 3292 | builtin_type_uint8 = |
| 3293 | init_type (TYPE_CODE_INT, 8 / 8, |
| 3294 | TYPE_FLAG_UNSIGNED | TYPE_FLAG_NOTTEXT, |
| 3295 | "uint8_t", (struct objfile *) NULL); |
| 3296 | builtin_type_int16 = |
| 3297 | init_type (TYPE_CODE_INT, 16 / 8, |
| 3298 | 0, |
| 3299 | "int16_t", (struct objfile *) NULL); |
| 3300 | builtin_type_uint16 = |
| 3301 | init_type (TYPE_CODE_INT, 16 / 8, |
| 3302 | TYPE_FLAG_UNSIGNED, |
| 3303 | "uint16_t", (struct objfile *) NULL); |
| 3304 | builtin_type_int32 = |
| 3305 | init_type (TYPE_CODE_INT, 32 / 8, |
| 3306 | 0, |
| 3307 | "int32_t", (struct objfile *) NULL); |
| 3308 | builtin_type_uint32 = |
| 3309 | init_type (TYPE_CODE_INT, 32 / 8, |
| 3310 | TYPE_FLAG_UNSIGNED, |
| 3311 | "uint32_t", (struct objfile *) NULL); |
| 3312 | builtin_type_int64 = |
| 3313 | init_type (TYPE_CODE_INT, 64 / 8, |
| 3314 | 0, |
| 3315 | "int64_t", (struct objfile *) NULL); |
| 3316 | builtin_type_uint64 = |
| 3317 | init_type (TYPE_CODE_INT, 64 / 8, |
| 3318 | TYPE_FLAG_UNSIGNED, |
| 3319 | "uint64_t", (struct objfile *) NULL); |
| 3320 | builtin_type_int128 = |
| 3321 | init_type (TYPE_CODE_INT, 128 / 8, |
| 3322 | 0, |
| 3323 | "int128_t", (struct objfile *) NULL); |
| 3324 | builtin_type_uint128 = |
| 3325 | init_type (TYPE_CODE_INT, 128 / 8, |
| 3326 | TYPE_FLAG_UNSIGNED, |
| 3327 | "uint128_t", (struct objfile *) NULL); |
| 3328 | |
| 3329 | builtin_type_ieee_single = |
| 3330 | build_flt (-1, "builtin_type_ieee_single", floatformats_ieee_single); |
| 3331 | builtin_type_ieee_double = |
| 3332 | build_flt (-1, "builtin_type_ieee_double", floatformats_ieee_double); |
| 3333 | builtin_type_i387_ext = |
| 3334 | build_flt (-1, "builtin_type_i387_ext", floatformats_i387_ext); |
| 3335 | builtin_type_m68881_ext = |
| 3336 | build_flt (-1, "builtin_type_m68881_ext", floatformats_m68881_ext); |
| 3337 | builtin_type_arm_ext = |
| 3338 | build_flt (-1, "builtin_type_arm_ext", floatformats_arm_ext); |
| 3339 | builtin_type_ia64_spill = |
| 3340 | build_flt (-1, "builtin_type_ia64_spill", floatformats_ia64_spill); |
| 3341 | builtin_type_ia64_quad = |
| 3342 | build_flt (-1, "builtin_type_ia64_quad", floatformats_ia64_quad); |
| 3343 | |
| 3344 | builtin_type_void = |
| 3345 | init_type (TYPE_CODE_VOID, 1, |
| 3346 | 0, |
| 3347 | "void", (struct objfile *) NULL); |
| 3348 | builtin_type_true_char = |
| 3349 | init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3350 | 0, |
| 3351 | "true character", (struct objfile *) NULL); |
| 3352 | builtin_type_true_unsigned_char = |
| 3353 | init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT, |
| 3354 | TYPE_FLAG_UNSIGNED, |
| 3355 | "true character", (struct objfile *) NULL); |
| 3356 | |
| 3357 | add_setshow_zinteger_cmd ("overload", no_class, &overload_debug, _("\ |
| 3358 | Set debugging of C++ overloading."), _("\ |
| 3359 | Show debugging of C++ overloading."), _("\ |
| 3360 | When enabled, ranking of the functions is displayed."), |
| 3361 | NULL, |
| 3362 | show_overload_debug, |
| 3363 | &setdebuglist, &showdebuglist); |
| 3364 | |
| 3365 | /* Add user knob for controlling resolution of opaque types. */ |
| 3366 | add_setshow_boolean_cmd ("opaque-type-resolution", class_support, |
| 3367 | &opaque_type_resolution, _("\ |
| 3368 | Set resolution of opaque struct/class/union types (if set before loading symbols)."), _("\ |
| 3369 | Show resolution of opaque struct/class/union types (if set before loading symbols)."), NULL, |
| 3370 | NULL, |
| 3371 | show_opaque_type_resolution, |
| 3372 | &setlist, &showlist); |
| 3373 | } |