| 1 | /* Support routines for manipulating internal types for GDB. |
| 2 | |
| 3 | Copyright (C) 1992-2019 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "bfd.h" |
| 24 | #include "symtab.h" |
| 25 | #include "symfile.h" |
| 26 | #include "objfiles.h" |
| 27 | #include "gdbtypes.h" |
| 28 | #include "expression.h" |
| 29 | #include "language.h" |
| 30 | #include "target.h" |
| 31 | #include "value.h" |
| 32 | #include "demangle.h" |
| 33 | #include "complaints.h" |
| 34 | #include "gdbcmd.h" |
| 35 | #include "cp-abi.h" |
| 36 | #include "hashtab.h" |
| 37 | #include "cp-support.h" |
| 38 | #include "bcache.h" |
| 39 | #include "dwarf2loc.h" |
| 40 | #include "gdbcore.h" |
| 41 | #include "floatformat.h" |
| 42 | |
| 43 | /* Initialize BADNESS constants. */ |
| 44 | |
| 45 | const struct rank LENGTH_MISMATCH_BADNESS = {100,0}; |
| 46 | |
| 47 | const struct rank TOO_FEW_PARAMS_BADNESS = {100,0}; |
| 48 | const struct rank INCOMPATIBLE_TYPE_BADNESS = {100,0}; |
| 49 | |
| 50 | const struct rank EXACT_MATCH_BADNESS = {0,0}; |
| 51 | |
| 52 | const struct rank INTEGER_PROMOTION_BADNESS = {1,0}; |
| 53 | const struct rank FLOAT_PROMOTION_BADNESS = {1,0}; |
| 54 | const struct rank BASE_PTR_CONVERSION_BADNESS = {1,0}; |
| 55 | const struct rank CV_CONVERSION_BADNESS = {1, 0}; |
| 56 | const struct rank INTEGER_CONVERSION_BADNESS = {2,0}; |
| 57 | const struct rank FLOAT_CONVERSION_BADNESS = {2,0}; |
| 58 | const struct rank INT_FLOAT_CONVERSION_BADNESS = {2,0}; |
| 59 | const struct rank VOID_PTR_CONVERSION_BADNESS = {2,0}; |
| 60 | const struct rank BOOL_CONVERSION_BADNESS = {3,0}; |
| 61 | const struct rank BASE_CONVERSION_BADNESS = {2,0}; |
| 62 | const struct rank REFERENCE_CONVERSION_BADNESS = {2,0}; |
| 63 | const struct rank NULL_POINTER_CONVERSION_BADNESS = {2,0}; |
| 64 | const struct rank NS_POINTER_CONVERSION_BADNESS = {10,0}; |
| 65 | const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS = {3,0}; |
| 66 | |
| 67 | /* Floatformat pairs. */ |
| 68 | const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN] = { |
| 69 | &floatformat_ieee_half_big, |
| 70 | &floatformat_ieee_half_little |
| 71 | }; |
| 72 | const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN] = { |
| 73 | &floatformat_ieee_single_big, |
| 74 | &floatformat_ieee_single_little |
| 75 | }; |
| 76 | const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN] = { |
| 77 | &floatformat_ieee_double_big, |
| 78 | &floatformat_ieee_double_little |
| 79 | }; |
| 80 | const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN] = { |
| 81 | &floatformat_ieee_double_big, |
| 82 | &floatformat_ieee_double_littlebyte_bigword |
| 83 | }; |
| 84 | const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN] = { |
| 85 | &floatformat_i387_ext, |
| 86 | &floatformat_i387_ext |
| 87 | }; |
| 88 | const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN] = { |
| 89 | &floatformat_m68881_ext, |
| 90 | &floatformat_m68881_ext |
| 91 | }; |
| 92 | const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN] = { |
| 93 | &floatformat_arm_ext_big, |
| 94 | &floatformat_arm_ext_littlebyte_bigword |
| 95 | }; |
| 96 | const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN] = { |
| 97 | &floatformat_ia64_spill_big, |
| 98 | &floatformat_ia64_spill_little |
| 99 | }; |
| 100 | const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN] = { |
| 101 | &floatformat_ia64_quad_big, |
| 102 | &floatformat_ia64_quad_little |
| 103 | }; |
| 104 | const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN] = { |
| 105 | &floatformat_vax_f, |
| 106 | &floatformat_vax_f |
| 107 | }; |
| 108 | const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN] = { |
| 109 | &floatformat_vax_d, |
| 110 | &floatformat_vax_d |
| 111 | }; |
| 112 | const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN] = { |
| 113 | &floatformat_ibm_long_double_big, |
| 114 | &floatformat_ibm_long_double_little |
| 115 | }; |
| 116 | |
| 117 | /* Should opaque types be resolved? */ |
| 118 | |
| 119 | static int opaque_type_resolution = 1; |
| 120 | |
| 121 | /* A flag to enable printing of debugging information of C++ |
| 122 | overloading. */ |
| 123 | |
| 124 | unsigned int overload_debug = 0; |
| 125 | |
| 126 | /* A flag to enable strict type checking. */ |
| 127 | |
| 128 | static int strict_type_checking = 1; |
| 129 | |
| 130 | /* A function to show whether opaque types are resolved. */ |
| 131 | |
| 132 | static void |
| 133 | show_opaque_type_resolution (struct ui_file *file, int from_tty, |
| 134 | struct cmd_list_element *c, |
| 135 | const char *value) |
| 136 | { |
| 137 | fprintf_filtered (file, _("Resolution of opaque struct/class/union types " |
| 138 | "(if set before loading symbols) is %s.\n"), |
| 139 | value); |
| 140 | } |
| 141 | |
| 142 | /* A function to show whether C++ overload debugging is enabled. */ |
| 143 | |
| 144 | static void |
| 145 | show_overload_debug (struct ui_file *file, int from_tty, |
| 146 | struct cmd_list_element *c, const char *value) |
| 147 | { |
| 148 | fprintf_filtered (file, _("Debugging of C++ overloading is %s.\n"), |
| 149 | value); |
| 150 | } |
| 151 | |
| 152 | /* A function to show the status of strict type checking. */ |
| 153 | |
| 154 | static void |
| 155 | show_strict_type_checking (struct ui_file *file, int from_tty, |
| 156 | struct cmd_list_element *c, const char *value) |
| 157 | { |
| 158 | fprintf_filtered (file, _("Strict type checking is %s.\n"), value); |
| 159 | } |
| 160 | |
| 161 | \f |
| 162 | /* Allocate a new OBJFILE-associated type structure and fill it |
| 163 | with some defaults. Space for the type structure is allocated |
| 164 | on the objfile's objfile_obstack. */ |
| 165 | |
| 166 | struct type * |
| 167 | alloc_type (struct objfile *objfile) |
| 168 | { |
| 169 | struct type *type; |
| 170 | |
| 171 | gdb_assert (objfile != NULL); |
| 172 | |
| 173 | /* Alloc the structure and start off with all fields zeroed. */ |
| 174 | type = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct type); |
| 175 | TYPE_MAIN_TYPE (type) = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
| 176 | struct main_type); |
| 177 | OBJSTAT (objfile, n_types++); |
| 178 | |
| 179 | TYPE_OBJFILE_OWNED (type) = 1; |
| 180 | TYPE_OWNER (type).objfile = objfile; |
| 181 | |
| 182 | /* Initialize the fields that might not be zero. */ |
| 183 | |
| 184 | TYPE_CODE (type) = TYPE_CODE_UNDEF; |
| 185 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
| 186 | |
| 187 | return type; |
| 188 | } |
| 189 | |
| 190 | /* Allocate a new GDBARCH-associated type structure and fill it |
| 191 | with some defaults. Space for the type structure is allocated |
| 192 | on the obstack associated with GDBARCH. */ |
| 193 | |
| 194 | struct type * |
| 195 | alloc_type_arch (struct gdbarch *gdbarch) |
| 196 | { |
| 197 | struct type *type; |
| 198 | |
| 199 | gdb_assert (gdbarch != NULL); |
| 200 | |
| 201 | /* Alloc the structure and start off with all fields zeroed. */ |
| 202 | |
| 203 | type = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct type); |
| 204 | TYPE_MAIN_TYPE (type) = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct main_type); |
| 205 | |
| 206 | TYPE_OBJFILE_OWNED (type) = 0; |
| 207 | TYPE_OWNER (type).gdbarch = gdbarch; |
| 208 | |
| 209 | /* Initialize the fields that might not be zero. */ |
| 210 | |
| 211 | TYPE_CODE (type) = TYPE_CODE_UNDEF; |
| 212 | TYPE_CHAIN (type) = type; /* Chain back to itself. */ |
| 213 | |
| 214 | return type; |
| 215 | } |
| 216 | |
| 217 | /* If TYPE is objfile-associated, allocate a new type structure |
| 218 | associated with the same objfile. If TYPE is gdbarch-associated, |
| 219 | allocate a new type structure associated with the same gdbarch. */ |
| 220 | |
| 221 | struct type * |
| 222 | alloc_type_copy (const struct type *type) |
| 223 | { |
| 224 | if (TYPE_OBJFILE_OWNED (type)) |
| 225 | return alloc_type (TYPE_OWNER (type).objfile); |
| 226 | else |
| 227 | return alloc_type_arch (TYPE_OWNER (type).gdbarch); |
| 228 | } |
| 229 | |
| 230 | /* If TYPE is gdbarch-associated, return that architecture. |
| 231 | If TYPE is objfile-associated, return that objfile's architecture. */ |
| 232 | |
| 233 | struct gdbarch * |
| 234 | get_type_arch (const struct type *type) |
| 235 | { |
| 236 | struct gdbarch *arch; |
| 237 | |
| 238 | if (TYPE_OBJFILE_OWNED (type)) |
| 239 | arch = get_objfile_arch (TYPE_OWNER (type).objfile); |
| 240 | else |
| 241 | arch = TYPE_OWNER (type).gdbarch; |
| 242 | |
| 243 | /* The ARCH can be NULL if TYPE is associated with neither an objfile nor |
| 244 | a gdbarch, however, this is very rare, and even then, in most cases |
| 245 | that get_type_arch is called, we assume that a non-NULL value is |
| 246 | returned. */ |
| 247 | gdb_assert (arch != NULL); |
| 248 | return arch; |
| 249 | } |
| 250 | |
| 251 | /* See gdbtypes.h. */ |
| 252 | |
| 253 | struct type * |
| 254 | get_target_type (struct type *type) |
| 255 | { |
| 256 | if (type != NULL) |
| 257 | { |
| 258 | type = TYPE_TARGET_TYPE (type); |
| 259 | if (type != NULL) |
| 260 | type = check_typedef (type); |
| 261 | } |
| 262 | |
| 263 | return type; |
| 264 | } |
| 265 | |
| 266 | /* See gdbtypes.h. */ |
| 267 | |
| 268 | unsigned int |
| 269 | type_length_units (struct type *type) |
| 270 | { |
| 271 | struct gdbarch *arch = get_type_arch (type); |
| 272 | int unit_size = gdbarch_addressable_memory_unit_size (arch); |
| 273 | |
| 274 | return TYPE_LENGTH (type) / unit_size; |
| 275 | } |
| 276 | |
| 277 | /* Alloc a new type instance structure, fill it with some defaults, |
| 278 | and point it at OLDTYPE. Allocate the new type instance from the |
| 279 | same place as OLDTYPE. */ |
| 280 | |
| 281 | static struct type * |
| 282 | alloc_type_instance (struct type *oldtype) |
| 283 | { |
| 284 | struct type *type; |
| 285 | |
| 286 | /* Allocate the structure. */ |
| 287 | |
| 288 | if (! TYPE_OBJFILE_OWNED (oldtype)) |
| 289 | type = GDBARCH_OBSTACK_ZALLOC (get_type_arch (oldtype), struct type); |
| 290 | else |
| 291 | type = OBSTACK_ZALLOC (&TYPE_OBJFILE (oldtype)->objfile_obstack, |
| 292 | struct type); |
| 293 | |
| 294 | TYPE_MAIN_TYPE (type) = TYPE_MAIN_TYPE (oldtype); |
| 295 | |
| 296 | TYPE_CHAIN (type) = type; /* Chain back to itself for now. */ |
| 297 | |
| 298 | return type; |
| 299 | } |
| 300 | |
| 301 | /* Clear all remnants of the previous type at TYPE, in preparation for |
| 302 | replacing it with something else. Preserve owner information. */ |
| 303 | |
| 304 | static void |
| 305 | smash_type (struct type *type) |
| 306 | { |
| 307 | int objfile_owned = TYPE_OBJFILE_OWNED (type); |
| 308 | union type_owner owner = TYPE_OWNER (type); |
| 309 | |
| 310 | memset (TYPE_MAIN_TYPE (type), 0, sizeof (struct main_type)); |
| 311 | |
| 312 | /* Restore owner information. */ |
| 313 | TYPE_OBJFILE_OWNED (type) = objfile_owned; |
| 314 | TYPE_OWNER (type) = owner; |
| 315 | |
| 316 | /* For now, delete the rings. */ |
| 317 | TYPE_CHAIN (type) = type; |
| 318 | |
| 319 | /* For now, leave the pointer/reference types alone. */ |
| 320 | } |
| 321 | |
| 322 | /* Lookup a pointer to a type TYPE. TYPEPTR, if nonzero, points |
| 323 | to a pointer to memory where the pointer type should be stored. |
| 324 | If *TYPEPTR is zero, update it to point to the pointer type we return. |
| 325 | We allocate new memory if needed. */ |
| 326 | |
| 327 | struct type * |
| 328 | make_pointer_type (struct type *type, struct type **typeptr) |
| 329 | { |
| 330 | struct type *ntype; /* New type */ |
| 331 | struct type *chain; |
| 332 | |
| 333 | ntype = TYPE_POINTER_TYPE (type); |
| 334 | |
| 335 | if (ntype) |
| 336 | { |
| 337 | if (typeptr == 0) |
| 338 | return ntype; /* Don't care about alloc, |
| 339 | and have new type. */ |
| 340 | else if (*typeptr == 0) |
| 341 | { |
| 342 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
| 343 | return ntype; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 348 | { |
| 349 | ntype = alloc_type_copy (type); |
| 350 | if (typeptr) |
| 351 | *typeptr = ntype; |
| 352 | } |
| 353 | else /* We have storage, but need to reset it. */ |
| 354 | { |
| 355 | ntype = *typeptr; |
| 356 | chain = TYPE_CHAIN (ntype); |
| 357 | smash_type (ntype); |
| 358 | TYPE_CHAIN (ntype) = chain; |
| 359 | } |
| 360 | |
| 361 | TYPE_TARGET_TYPE (ntype) = type; |
| 362 | TYPE_POINTER_TYPE (type) = ntype; |
| 363 | |
| 364 | /* FIXME! Assumes the machine has only one representation for pointers! */ |
| 365 | |
| 366 | TYPE_LENGTH (ntype) |
| 367 | = gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; |
| 368 | TYPE_CODE (ntype) = TYPE_CODE_PTR; |
| 369 | |
| 370 | /* Mark pointers as unsigned. The target converts between pointers |
| 371 | and addresses (CORE_ADDRs) using gdbarch_pointer_to_address and |
| 372 | gdbarch_address_to_pointer. */ |
| 373 | TYPE_UNSIGNED (ntype) = 1; |
| 374 | |
| 375 | /* Update the length of all the other variants of this type. */ |
| 376 | chain = TYPE_CHAIN (ntype); |
| 377 | while (chain != ntype) |
| 378 | { |
| 379 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); |
| 380 | chain = TYPE_CHAIN (chain); |
| 381 | } |
| 382 | |
| 383 | return ntype; |
| 384 | } |
| 385 | |
| 386 | /* Given a type TYPE, return a type of pointers to that type. |
| 387 | May need to construct such a type if this is the first use. */ |
| 388 | |
| 389 | struct type * |
| 390 | lookup_pointer_type (struct type *type) |
| 391 | { |
| 392 | return make_pointer_type (type, (struct type **) 0); |
| 393 | } |
| 394 | |
| 395 | /* Lookup a C++ `reference' to a type TYPE. TYPEPTR, if nonzero, |
| 396 | points to a pointer to memory where the reference type should be |
| 397 | stored. If *TYPEPTR is zero, update it to point to the reference |
| 398 | type we return. We allocate new memory if needed. REFCODE denotes |
| 399 | the kind of reference type to lookup (lvalue or rvalue reference). */ |
| 400 | |
| 401 | struct type * |
| 402 | make_reference_type (struct type *type, struct type **typeptr, |
| 403 | enum type_code refcode) |
| 404 | { |
| 405 | struct type *ntype; /* New type */ |
| 406 | struct type **reftype; |
| 407 | struct type *chain; |
| 408 | |
| 409 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
| 410 | |
| 411 | ntype = (refcode == TYPE_CODE_REF ? TYPE_REFERENCE_TYPE (type) |
| 412 | : TYPE_RVALUE_REFERENCE_TYPE (type)); |
| 413 | |
| 414 | if (ntype) |
| 415 | { |
| 416 | if (typeptr == 0) |
| 417 | return ntype; /* Don't care about alloc, |
| 418 | and have new type. */ |
| 419 | else if (*typeptr == 0) |
| 420 | { |
| 421 | *typeptr = ntype; /* Tracking alloc, and have new type. */ |
| 422 | return ntype; |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 427 | { |
| 428 | ntype = alloc_type_copy (type); |
| 429 | if (typeptr) |
| 430 | *typeptr = ntype; |
| 431 | } |
| 432 | else /* We have storage, but need to reset it. */ |
| 433 | { |
| 434 | ntype = *typeptr; |
| 435 | chain = TYPE_CHAIN (ntype); |
| 436 | smash_type (ntype); |
| 437 | TYPE_CHAIN (ntype) = chain; |
| 438 | } |
| 439 | |
| 440 | TYPE_TARGET_TYPE (ntype) = type; |
| 441 | reftype = (refcode == TYPE_CODE_REF ? &TYPE_REFERENCE_TYPE (type) |
| 442 | : &TYPE_RVALUE_REFERENCE_TYPE (type)); |
| 443 | |
| 444 | *reftype = ntype; |
| 445 | |
| 446 | /* FIXME! Assume the machine has only one representation for |
| 447 | references, and that it matches the (only) representation for |
| 448 | pointers! */ |
| 449 | |
| 450 | TYPE_LENGTH (ntype) = |
| 451 | gdbarch_ptr_bit (get_type_arch (type)) / TARGET_CHAR_BIT; |
| 452 | TYPE_CODE (ntype) = refcode; |
| 453 | |
| 454 | *reftype = ntype; |
| 455 | |
| 456 | /* Update the length of all the other variants of this type. */ |
| 457 | chain = TYPE_CHAIN (ntype); |
| 458 | while (chain != ntype) |
| 459 | { |
| 460 | TYPE_LENGTH (chain) = TYPE_LENGTH (ntype); |
| 461 | chain = TYPE_CHAIN (chain); |
| 462 | } |
| 463 | |
| 464 | return ntype; |
| 465 | } |
| 466 | |
| 467 | /* Same as above, but caller doesn't care about memory allocation |
| 468 | details. */ |
| 469 | |
| 470 | struct type * |
| 471 | lookup_reference_type (struct type *type, enum type_code refcode) |
| 472 | { |
| 473 | return make_reference_type (type, (struct type **) 0, refcode); |
| 474 | } |
| 475 | |
| 476 | /* Lookup the lvalue reference type for the type TYPE. */ |
| 477 | |
| 478 | struct type * |
| 479 | lookup_lvalue_reference_type (struct type *type) |
| 480 | { |
| 481 | return lookup_reference_type (type, TYPE_CODE_REF); |
| 482 | } |
| 483 | |
| 484 | /* Lookup the rvalue reference type for the type TYPE. */ |
| 485 | |
| 486 | struct type * |
| 487 | lookup_rvalue_reference_type (struct type *type) |
| 488 | { |
| 489 | return lookup_reference_type (type, TYPE_CODE_RVALUE_REF); |
| 490 | } |
| 491 | |
| 492 | /* Lookup a function type that returns type TYPE. TYPEPTR, if |
| 493 | nonzero, points to a pointer to memory where the function type |
| 494 | should be stored. If *TYPEPTR is zero, update it to point to the |
| 495 | function type we return. We allocate new memory if needed. */ |
| 496 | |
| 497 | struct type * |
| 498 | make_function_type (struct type *type, struct type **typeptr) |
| 499 | { |
| 500 | struct type *ntype; /* New type */ |
| 501 | |
| 502 | if (typeptr == 0 || *typeptr == 0) /* We'll need to allocate one. */ |
| 503 | { |
| 504 | ntype = alloc_type_copy (type); |
| 505 | if (typeptr) |
| 506 | *typeptr = ntype; |
| 507 | } |
| 508 | else /* We have storage, but need to reset it. */ |
| 509 | { |
| 510 | ntype = *typeptr; |
| 511 | smash_type (ntype); |
| 512 | } |
| 513 | |
| 514 | TYPE_TARGET_TYPE (ntype) = type; |
| 515 | |
| 516 | TYPE_LENGTH (ntype) = 1; |
| 517 | TYPE_CODE (ntype) = TYPE_CODE_FUNC; |
| 518 | |
| 519 | INIT_FUNC_SPECIFIC (ntype); |
| 520 | |
| 521 | return ntype; |
| 522 | } |
| 523 | |
| 524 | /* Given a type TYPE, return a type of functions that return that type. |
| 525 | May need to construct such a type if this is the first use. */ |
| 526 | |
| 527 | struct type * |
| 528 | lookup_function_type (struct type *type) |
| 529 | { |
| 530 | return make_function_type (type, (struct type **) 0); |
| 531 | } |
| 532 | |
| 533 | /* Given a type TYPE and argument types, return the appropriate |
| 534 | function type. If the final type in PARAM_TYPES is NULL, make a |
| 535 | varargs function. */ |
| 536 | |
| 537 | struct type * |
| 538 | lookup_function_type_with_arguments (struct type *type, |
| 539 | int nparams, |
| 540 | struct type **param_types) |
| 541 | { |
| 542 | struct type *fn = make_function_type (type, (struct type **) 0); |
| 543 | int i; |
| 544 | |
| 545 | if (nparams > 0) |
| 546 | { |
| 547 | if (param_types[nparams - 1] == NULL) |
| 548 | { |
| 549 | --nparams; |
| 550 | TYPE_VARARGS (fn) = 1; |
| 551 | } |
| 552 | else if (TYPE_CODE (check_typedef (param_types[nparams - 1])) |
| 553 | == TYPE_CODE_VOID) |
| 554 | { |
| 555 | --nparams; |
| 556 | /* Caller should have ensured this. */ |
| 557 | gdb_assert (nparams == 0); |
| 558 | TYPE_PROTOTYPED (fn) = 1; |
| 559 | } |
| 560 | else |
| 561 | TYPE_PROTOTYPED (fn) = 1; |
| 562 | } |
| 563 | |
| 564 | TYPE_NFIELDS (fn) = nparams; |
| 565 | TYPE_FIELDS (fn) |
| 566 | = (struct field *) TYPE_ZALLOC (fn, nparams * sizeof (struct field)); |
| 567 | for (i = 0; i < nparams; ++i) |
| 568 | TYPE_FIELD_TYPE (fn, i) = param_types[i]; |
| 569 | |
| 570 | return fn; |
| 571 | } |
| 572 | |
| 573 | /* Identify address space identifier by name -- |
| 574 | return the integer flag defined in gdbtypes.h. */ |
| 575 | |
| 576 | int |
| 577 | address_space_name_to_int (struct gdbarch *gdbarch, |
| 578 | const char *space_identifier) |
| 579 | { |
| 580 | int type_flags; |
| 581 | |
| 582 | /* Check for known address space delimiters. */ |
| 583 | if (!strcmp (space_identifier, "code")) |
| 584 | return TYPE_INSTANCE_FLAG_CODE_SPACE; |
| 585 | else if (!strcmp (space_identifier, "data")) |
| 586 | return TYPE_INSTANCE_FLAG_DATA_SPACE; |
| 587 | else if (gdbarch_address_class_name_to_type_flags_p (gdbarch) |
| 588 | && gdbarch_address_class_name_to_type_flags (gdbarch, |
| 589 | space_identifier, |
| 590 | &type_flags)) |
| 591 | return type_flags; |
| 592 | else |
| 593 | error (_("Unknown address space specifier: \"%s\""), space_identifier); |
| 594 | } |
| 595 | |
| 596 | /* Identify address space identifier by integer flag as defined in |
| 597 | gdbtypes.h -- return the string version of the adress space name. */ |
| 598 | |
| 599 | const char * |
| 600 | address_space_int_to_name (struct gdbarch *gdbarch, int space_flag) |
| 601 | { |
| 602 | if (space_flag & TYPE_INSTANCE_FLAG_CODE_SPACE) |
| 603 | return "code"; |
| 604 | else if (space_flag & TYPE_INSTANCE_FLAG_DATA_SPACE) |
| 605 | return "data"; |
| 606 | else if ((space_flag & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
| 607 | && gdbarch_address_class_type_flags_to_name_p (gdbarch)) |
| 608 | return gdbarch_address_class_type_flags_to_name (gdbarch, space_flag); |
| 609 | else |
| 610 | return NULL; |
| 611 | } |
| 612 | |
| 613 | /* Create a new type with instance flags NEW_FLAGS, based on TYPE. |
| 614 | |
| 615 | If STORAGE is non-NULL, create the new type instance there. |
| 616 | STORAGE must be in the same obstack as TYPE. */ |
| 617 | |
| 618 | static struct type * |
| 619 | make_qualified_type (struct type *type, int new_flags, |
| 620 | struct type *storage) |
| 621 | { |
| 622 | struct type *ntype; |
| 623 | |
| 624 | ntype = type; |
| 625 | do |
| 626 | { |
| 627 | if (TYPE_INSTANCE_FLAGS (ntype) == new_flags) |
| 628 | return ntype; |
| 629 | ntype = TYPE_CHAIN (ntype); |
| 630 | } |
| 631 | while (ntype != type); |
| 632 | |
| 633 | /* Create a new type instance. */ |
| 634 | if (storage == NULL) |
| 635 | ntype = alloc_type_instance (type); |
| 636 | else |
| 637 | { |
| 638 | /* If STORAGE was provided, it had better be in the same objfile |
| 639 | as TYPE. Otherwise, we can't link it into TYPE's cv chain: |
| 640 | if one objfile is freed and the other kept, we'd have |
| 641 | dangling pointers. */ |
| 642 | gdb_assert (TYPE_OBJFILE (type) == TYPE_OBJFILE (storage)); |
| 643 | |
| 644 | ntype = storage; |
| 645 | TYPE_MAIN_TYPE (ntype) = TYPE_MAIN_TYPE (type); |
| 646 | TYPE_CHAIN (ntype) = ntype; |
| 647 | } |
| 648 | |
| 649 | /* Pointers or references to the original type are not relevant to |
| 650 | the new type. */ |
| 651 | TYPE_POINTER_TYPE (ntype) = (struct type *) 0; |
| 652 | TYPE_REFERENCE_TYPE (ntype) = (struct type *) 0; |
| 653 | |
| 654 | /* Chain the new qualified type to the old type. */ |
| 655 | TYPE_CHAIN (ntype) = TYPE_CHAIN (type); |
| 656 | TYPE_CHAIN (type) = ntype; |
| 657 | |
| 658 | /* Now set the instance flags and return the new type. */ |
| 659 | TYPE_INSTANCE_FLAGS (ntype) = new_flags; |
| 660 | |
| 661 | /* Set length of new type to that of the original type. */ |
| 662 | TYPE_LENGTH (ntype) = TYPE_LENGTH (type); |
| 663 | |
| 664 | return ntype; |
| 665 | } |
| 666 | |
| 667 | /* Make an address-space-delimited variant of a type -- a type that |
| 668 | is identical to the one supplied except that it has an address |
| 669 | space attribute attached to it (such as "code" or "data"). |
| 670 | |
| 671 | The space attributes "code" and "data" are for Harvard |
| 672 | architectures. The address space attributes are for architectures |
| 673 | which have alternately sized pointers or pointers with alternate |
| 674 | representations. */ |
| 675 | |
| 676 | struct type * |
| 677 | make_type_with_address_space (struct type *type, int space_flag) |
| 678 | { |
| 679 | int new_flags = ((TYPE_INSTANCE_FLAGS (type) |
| 680 | & ~(TYPE_INSTANCE_FLAG_CODE_SPACE |
| 681 | | TYPE_INSTANCE_FLAG_DATA_SPACE |
| 682 | | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)) |
| 683 | | space_flag); |
| 684 | |
| 685 | return make_qualified_type (type, new_flags, NULL); |
| 686 | } |
| 687 | |
| 688 | /* Make a "c-v" variant of a type -- a type that is identical to the |
| 689 | one supplied except that it may have const or volatile attributes |
| 690 | CNST is a flag for setting the const attribute |
| 691 | VOLTL is a flag for setting the volatile attribute |
| 692 | TYPE is the base type whose variant we are creating. |
| 693 | |
| 694 | If TYPEPTR and *TYPEPTR are non-zero, then *TYPEPTR points to |
| 695 | storage to hold the new qualified type; *TYPEPTR and TYPE must be |
| 696 | in the same objfile. Otherwise, allocate fresh memory for the new |
| 697 | type whereever TYPE lives. If TYPEPTR is non-zero, set it to the |
| 698 | new type we construct. */ |
| 699 | |
| 700 | struct type * |
| 701 | make_cv_type (int cnst, int voltl, |
| 702 | struct type *type, |
| 703 | struct type **typeptr) |
| 704 | { |
| 705 | struct type *ntype; /* New type */ |
| 706 | |
| 707 | int new_flags = (TYPE_INSTANCE_FLAGS (type) |
| 708 | & ~(TYPE_INSTANCE_FLAG_CONST |
| 709 | | TYPE_INSTANCE_FLAG_VOLATILE)); |
| 710 | |
| 711 | if (cnst) |
| 712 | new_flags |= TYPE_INSTANCE_FLAG_CONST; |
| 713 | |
| 714 | if (voltl) |
| 715 | new_flags |= TYPE_INSTANCE_FLAG_VOLATILE; |
| 716 | |
| 717 | if (typeptr && *typeptr != NULL) |
| 718 | { |
| 719 | /* TYPE and *TYPEPTR must be in the same objfile. We can't have |
| 720 | a C-V variant chain that threads across objfiles: if one |
| 721 | objfile gets freed, then the other has a broken C-V chain. |
| 722 | |
| 723 | This code used to try to copy over the main type from TYPE to |
| 724 | *TYPEPTR if they were in different objfiles, but that's |
| 725 | wrong, too: TYPE may have a field list or member function |
| 726 | lists, which refer to types of their own, etc. etc. The |
| 727 | whole shebang would need to be copied over recursively; you |
| 728 | can't have inter-objfile pointers. The only thing to do is |
| 729 | to leave stub types as stub types, and look them up afresh by |
| 730 | name each time you encounter them. */ |
| 731 | gdb_assert (TYPE_OBJFILE (*typeptr) == TYPE_OBJFILE (type)); |
| 732 | } |
| 733 | |
| 734 | ntype = make_qualified_type (type, new_flags, |
| 735 | typeptr ? *typeptr : NULL); |
| 736 | |
| 737 | if (typeptr != NULL) |
| 738 | *typeptr = ntype; |
| 739 | |
| 740 | return ntype; |
| 741 | } |
| 742 | |
| 743 | /* Make a 'restrict'-qualified version of TYPE. */ |
| 744 | |
| 745 | struct type * |
| 746 | make_restrict_type (struct type *type) |
| 747 | { |
| 748 | return make_qualified_type (type, |
| 749 | (TYPE_INSTANCE_FLAGS (type) |
| 750 | | TYPE_INSTANCE_FLAG_RESTRICT), |
| 751 | NULL); |
| 752 | } |
| 753 | |
| 754 | /* Make a type without const, volatile, or restrict. */ |
| 755 | |
| 756 | struct type * |
| 757 | make_unqualified_type (struct type *type) |
| 758 | { |
| 759 | return make_qualified_type (type, |
| 760 | (TYPE_INSTANCE_FLAGS (type) |
| 761 | & ~(TYPE_INSTANCE_FLAG_CONST |
| 762 | | TYPE_INSTANCE_FLAG_VOLATILE |
| 763 | | TYPE_INSTANCE_FLAG_RESTRICT)), |
| 764 | NULL); |
| 765 | } |
| 766 | |
| 767 | /* Make a '_Atomic'-qualified version of TYPE. */ |
| 768 | |
| 769 | struct type * |
| 770 | make_atomic_type (struct type *type) |
| 771 | { |
| 772 | return make_qualified_type (type, |
| 773 | (TYPE_INSTANCE_FLAGS (type) |
| 774 | | TYPE_INSTANCE_FLAG_ATOMIC), |
| 775 | NULL); |
| 776 | } |
| 777 | |
| 778 | /* Replace the contents of ntype with the type *type. This changes the |
| 779 | contents, rather than the pointer for TYPE_MAIN_TYPE (ntype); thus |
| 780 | the changes are propogated to all types in the TYPE_CHAIN. |
| 781 | |
| 782 | In order to build recursive types, it's inevitable that we'll need |
| 783 | to update types in place --- but this sort of indiscriminate |
| 784 | smashing is ugly, and needs to be replaced with something more |
| 785 | controlled. TYPE_MAIN_TYPE is a step in this direction; it's not |
| 786 | clear if more steps are needed. */ |
| 787 | |
| 788 | void |
| 789 | replace_type (struct type *ntype, struct type *type) |
| 790 | { |
| 791 | struct type *chain; |
| 792 | |
| 793 | /* These two types had better be in the same objfile. Otherwise, |
| 794 | the assignment of one type's main type structure to the other |
| 795 | will produce a type with references to objects (names; field |
| 796 | lists; etc.) allocated on an objfile other than its own. */ |
| 797 | gdb_assert (TYPE_OBJFILE (ntype) == TYPE_OBJFILE (type)); |
| 798 | |
| 799 | *TYPE_MAIN_TYPE (ntype) = *TYPE_MAIN_TYPE (type); |
| 800 | |
| 801 | /* The type length is not a part of the main type. Update it for |
| 802 | each type on the variant chain. */ |
| 803 | chain = ntype; |
| 804 | do |
| 805 | { |
| 806 | /* Assert that this element of the chain has no address-class bits |
| 807 | set in its flags. Such type variants might have type lengths |
| 808 | which are supposed to be different from the non-address-class |
| 809 | variants. This assertion shouldn't ever be triggered because |
| 810 | symbol readers which do construct address-class variants don't |
| 811 | call replace_type(). */ |
| 812 | gdb_assert (TYPE_ADDRESS_CLASS_ALL (chain) == 0); |
| 813 | |
| 814 | TYPE_LENGTH (chain) = TYPE_LENGTH (type); |
| 815 | chain = TYPE_CHAIN (chain); |
| 816 | } |
| 817 | while (ntype != chain); |
| 818 | |
| 819 | /* Assert that the two types have equivalent instance qualifiers. |
| 820 | This should be true for at least all of our debug readers. */ |
| 821 | gdb_assert (TYPE_INSTANCE_FLAGS (ntype) == TYPE_INSTANCE_FLAGS (type)); |
| 822 | } |
| 823 | |
| 824 | /* Implement direct support for MEMBER_TYPE in GNU C++. |
| 825 | May need to construct such a type if this is the first use. |
| 826 | The TYPE is the type of the member. The DOMAIN is the type |
| 827 | of the aggregate that the member belongs to. */ |
| 828 | |
| 829 | struct type * |
| 830 | lookup_memberptr_type (struct type *type, struct type *domain) |
| 831 | { |
| 832 | struct type *mtype; |
| 833 | |
| 834 | mtype = alloc_type_copy (type); |
| 835 | smash_to_memberptr_type (mtype, domain, type); |
| 836 | return mtype; |
| 837 | } |
| 838 | |
| 839 | /* Return a pointer-to-method type, for a method of type TO_TYPE. */ |
| 840 | |
| 841 | struct type * |
| 842 | lookup_methodptr_type (struct type *to_type) |
| 843 | { |
| 844 | struct type *mtype; |
| 845 | |
| 846 | mtype = alloc_type_copy (to_type); |
| 847 | smash_to_methodptr_type (mtype, to_type); |
| 848 | return mtype; |
| 849 | } |
| 850 | |
| 851 | /* Allocate a stub method whose return type is TYPE. This apparently |
| 852 | happens for speed of symbol reading, since parsing out the |
| 853 | arguments to the method is cpu-intensive, the way we are doing it. |
| 854 | So, we will fill in arguments later. This always returns a fresh |
| 855 | type. */ |
| 856 | |
| 857 | struct type * |
| 858 | allocate_stub_method (struct type *type) |
| 859 | { |
| 860 | struct type *mtype; |
| 861 | |
| 862 | mtype = alloc_type_copy (type); |
| 863 | TYPE_CODE (mtype) = TYPE_CODE_METHOD; |
| 864 | TYPE_LENGTH (mtype) = 1; |
| 865 | TYPE_STUB (mtype) = 1; |
| 866 | TYPE_TARGET_TYPE (mtype) = type; |
| 867 | /* TYPE_SELF_TYPE (mtype) = unknown yet */ |
| 868 | return mtype; |
| 869 | } |
| 870 | |
| 871 | /* See gdbtypes.h. */ |
| 872 | |
| 873 | bool |
| 874 | operator== (const dynamic_prop &l, const dynamic_prop &r) |
| 875 | { |
| 876 | if (l.kind != r.kind) |
| 877 | return false; |
| 878 | |
| 879 | switch (l.kind) |
| 880 | { |
| 881 | case PROP_UNDEFINED: |
| 882 | return true; |
| 883 | case PROP_CONST: |
| 884 | return l.data.const_val == r.data.const_val; |
| 885 | case PROP_ADDR_OFFSET: |
| 886 | case PROP_LOCEXPR: |
| 887 | case PROP_LOCLIST: |
| 888 | return l.data.baton == r.data.baton; |
| 889 | } |
| 890 | |
| 891 | gdb_assert_not_reached ("unhandled dynamic_prop kind"); |
| 892 | } |
| 893 | |
| 894 | /* See gdbtypes.h. */ |
| 895 | |
| 896 | bool |
| 897 | operator== (const range_bounds &l, const range_bounds &r) |
| 898 | { |
| 899 | #define FIELD_EQ(FIELD) (l.FIELD == r.FIELD) |
| 900 | |
| 901 | return (FIELD_EQ (low) |
| 902 | && FIELD_EQ (high) |
| 903 | && FIELD_EQ (flag_upper_bound_is_count) |
| 904 | && FIELD_EQ (flag_bound_evaluated)); |
| 905 | |
| 906 | #undef FIELD_EQ |
| 907 | } |
| 908 | |
| 909 | /* Create a range type with a dynamic range from LOW_BOUND to |
| 910 | HIGH_BOUND, inclusive. See create_range_type for further details. */ |
| 911 | |
| 912 | struct type * |
| 913 | create_range_type (struct type *result_type, struct type *index_type, |
| 914 | const struct dynamic_prop *low_bound, |
| 915 | const struct dynamic_prop *high_bound) |
| 916 | { |
| 917 | if (result_type == NULL) |
| 918 | result_type = alloc_type_copy (index_type); |
| 919 | TYPE_CODE (result_type) = TYPE_CODE_RANGE; |
| 920 | TYPE_TARGET_TYPE (result_type) = index_type; |
| 921 | if (TYPE_STUB (index_type)) |
| 922 | TYPE_TARGET_STUB (result_type) = 1; |
| 923 | else |
| 924 | TYPE_LENGTH (result_type) = TYPE_LENGTH (check_typedef (index_type)); |
| 925 | |
| 926 | TYPE_RANGE_DATA (result_type) = (struct range_bounds *) |
| 927 | TYPE_ZALLOC (result_type, sizeof (struct range_bounds)); |
| 928 | TYPE_RANGE_DATA (result_type)->low = *low_bound; |
| 929 | TYPE_RANGE_DATA (result_type)->high = *high_bound; |
| 930 | |
| 931 | if (low_bound->kind == PROP_CONST && low_bound->data.const_val >= 0) |
| 932 | TYPE_UNSIGNED (result_type) = 1; |
| 933 | |
| 934 | /* Ada allows the declaration of range types whose upper bound is |
| 935 | less than the lower bound, so checking the lower bound is not |
| 936 | enough. Make sure we do not mark a range type whose upper bound |
| 937 | is negative as unsigned. */ |
| 938 | if (high_bound->kind == PROP_CONST && high_bound->data.const_val < 0) |
| 939 | TYPE_UNSIGNED (result_type) = 0; |
| 940 | |
| 941 | return result_type; |
| 942 | } |
| 943 | |
| 944 | /* Create a range type using either a blank type supplied in |
| 945 | RESULT_TYPE, or creating a new type, inheriting the objfile from |
| 946 | INDEX_TYPE. |
| 947 | |
| 948 | Indices will be of type INDEX_TYPE, and will range from LOW_BOUND |
| 949 | to HIGH_BOUND, inclusive. |
| 950 | |
| 951 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 952 | sure it is TYPE_CODE_UNDEF before we bash it into a range type? */ |
| 953 | |
| 954 | struct type * |
| 955 | create_static_range_type (struct type *result_type, struct type *index_type, |
| 956 | LONGEST low_bound, LONGEST high_bound) |
| 957 | { |
| 958 | struct dynamic_prop low, high; |
| 959 | |
| 960 | low.kind = PROP_CONST; |
| 961 | low.data.const_val = low_bound; |
| 962 | |
| 963 | high.kind = PROP_CONST; |
| 964 | high.data.const_val = high_bound; |
| 965 | |
| 966 | result_type = create_range_type (result_type, index_type, &low, &high); |
| 967 | |
| 968 | return result_type; |
| 969 | } |
| 970 | |
| 971 | /* Predicate tests whether BOUNDS are static. Returns 1 if all bounds values |
| 972 | are static, otherwise returns 0. */ |
| 973 | |
| 974 | static int |
| 975 | has_static_range (const struct range_bounds *bounds) |
| 976 | { |
| 977 | return (bounds->low.kind == PROP_CONST |
| 978 | && bounds->high.kind == PROP_CONST); |
| 979 | } |
| 980 | |
| 981 | |
| 982 | /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type |
| 983 | TYPE. Return 1 if type is a range type, 0 if it is discrete (and |
| 984 | bounds will fit in LONGEST), or -1 otherwise. */ |
| 985 | |
| 986 | int |
| 987 | get_discrete_bounds (struct type *type, LONGEST *lowp, LONGEST *highp) |
| 988 | { |
| 989 | type = check_typedef (type); |
| 990 | switch (TYPE_CODE (type)) |
| 991 | { |
| 992 | case TYPE_CODE_RANGE: |
| 993 | *lowp = TYPE_LOW_BOUND (type); |
| 994 | *highp = TYPE_HIGH_BOUND (type); |
| 995 | return 1; |
| 996 | case TYPE_CODE_ENUM: |
| 997 | if (TYPE_NFIELDS (type) > 0) |
| 998 | { |
| 999 | /* The enums may not be sorted by value, so search all |
| 1000 | entries. */ |
| 1001 | int i; |
| 1002 | |
| 1003 | *lowp = *highp = TYPE_FIELD_ENUMVAL (type, 0); |
| 1004 | for (i = 0; i < TYPE_NFIELDS (type); i++) |
| 1005 | { |
| 1006 | if (TYPE_FIELD_ENUMVAL (type, i) < *lowp) |
| 1007 | *lowp = TYPE_FIELD_ENUMVAL (type, i); |
| 1008 | if (TYPE_FIELD_ENUMVAL (type, i) > *highp) |
| 1009 | *highp = TYPE_FIELD_ENUMVAL (type, i); |
| 1010 | } |
| 1011 | |
| 1012 | /* Set unsigned indicator if warranted. */ |
| 1013 | if (*lowp >= 0) |
| 1014 | { |
| 1015 | TYPE_UNSIGNED (type) = 1; |
| 1016 | } |
| 1017 | } |
| 1018 | else |
| 1019 | { |
| 1020 | *lowp = 0; |
| 1021 | *highp = -1; |
| 1022 | } |
| 1023 | return 0; |
| 1024 | case TYPE_CODE_BOOL: |
| 1025 | *lowp = 0; |
| 1026 | *highp = 1; |
| 1027 | return 0; |
| 1028 | case TYPE_CODE_INT: |
| 1029 | if (TYPE_LENGTH (type) > sizeof (LONGEST)) /* Too big */ |
| 1030 | return -1; |
| 1031 | if (!TYPE_UNSIGNED (type)) |
| 1032 | { |
| 1033 | *lowp = -(1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1)); |
| 1034 | *highp = -*lowp - 1; |
| 1035 | return 0; |
| 1036 | } |
| 1037 | /* fall through */ |
| 1038 | case TYPE_CODE_CHAR: |
| 1039 | *lowp = 0; |
| 1040 | /* This round-about calculation is to avoid shifting by |
| 1041 | TYPE_LENGTH (type) * TARGET_CHAR_BIT, which will not work |
| 1042 | if TYPE_LENGTH (type) == sizeof (LONGEST). */ |
| 1043 | *highp = 1 << (TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1); |
| 1044 | *highp = (*highp - 1) | *highp; |
| 1045 | return 0; |
| 1046 | default: |
| 1047 | return -1; |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | /* Assuming TYPE is a simple, non-empty array type, compute its upper |
| 1052 | and lower bound. Save the low bound into LOW_BOUND if not NULL. |
| 1053 | Save the high bound into HIGH_BOUND if not NULL. |
| 1054 | |
| 1055 | Return 1 if the operation was successful. Return zero otherwise, |
| 1056 | in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. |
| 1057 | |
| 1058 | We now simply use get_discrete_bounds call to get the values |
| 1059 | of the low and high bounds. |
| 1060 | get_discrete_bounds can return three values: |
| 1061 | 1, meaning that index is a range, |
| 1062 | 0, meaning that index is a discrete type, |
| 1063 | or -1 for failure. */ |
| 1064 | |
| 1065 | int |
| 1066 | get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound) |
| 1067 | { |
| 1068 | struct type *index = TYPE_INDEX_TYPE (type); |
| 1069 | LONGEST low = 0; |
| 1070 | LONGEST high = 0; |
| 1071 | int res; |
| 1072 | |
| 1073 | if (index == NULL) |
| 1074 | return 0; |
| 1075 | |
| 1076 | res = get_discrete_bounds (index, &low, &high); |
| 1077 | if (res == -1) |
| 1078 | return 0; |
| 1079 | |
| 1080 | /* Check if the array bounds are undefined. */ |
| 1081 | if (res == 1 |
| 1082 | && ((low_bound && TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED (type)) |
| 1083 | || (high_bound && TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type)))) |
| 1084 | return 0; |
| 1085 | |
| 1086 | if (low_bound) |
| 1087 | *low_bound = low; |
| 1088 | |
| 1089 | if (high_bound) |
| 1090 | *high_bound = high; |
| 1091 | |
| 1092 | return 1; |
| 1093 | } |
| 1094 | |
| 1095 | /* Assuming that TYPE is a discrete type and VAL is a valid integer |
| 1096 | representation of a value of this type, save the corresponding |
| 1097 | position number in POS. |
| 1098 | |
| 1099 | Its differs from VAL only in the case of enumeration types. In |
| 1100 | this case, the position number of the value of the first listed |
| 1101 | enumeration literal is zero; the position number of the value of |
| 1102 | each subsequent enumeration literal is one more than that of its |
| 1103 | predecessor in the list. |
| 1104 | |
| 1105 | Return 1 if the operation was successful. Return zero otherwise, |
| 1106 | in which case the value of POS is unmodified. |
| 1107 | */ |
| 1108 | |
| 1109 | int |
| 1110 | discrete_position (struct type *type, LONGEST val, LONGEST *pos) |
| 1111 | { |
| 1112 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) |
| 1113 | { |
| 1114 | int i; |
| 1115 | |
| 1116 | for (i = 0; i < TYPE_NFIELDS (type); i += 1) |
| 1117 | { |
| 1118 | if (val == TYPE_FIELD_ENUMVAL (type, i)) |
| 1119 | { |
| 1120 | *pos = i; |
| 1121 | return 1; |
| 1122 | } |
| 1123 | } |
| 1124 | /* Invalid enumeration value. */ |
| 1125 | return 0; |
| 1126 | } |
| 1127 | else |
| 1128 | { |
| 1129 | *pos = val; |
| 1130 | return 1; |
| 1131 | } |
| 1132 | } |
| 1133 | |
| 1134 | /* Create an array type using either a blank type supplied in |
| 1135 | RESULT_TYPE, or creating a new type, inheriting the objfile from |
| 1136 | RANGE_TYPE. |
| 1137 | |
| 1138 | Elements will be of type ELEMENT_TYPE, the indices will be of type |
| 1139 | RANGE_TYPE. |
| 1140 | |
| 1141 | BYTE_STRIDE_PROP, when not NULL, provides the array's byte stride. |
| 1142 | This byte stride property is added to the resulting array type |
| 1143 | as a DYN_PROP_BYTE_STRIDE. As a consequence, the BYTE_STRIDE_PROP |
| 1144 | argument can only be used to create types that are objfile-owned |
| 1145 | (see add_dyn_prop), meaning that either this function must be called |
| 1146 | with an objfile-owned RESULT_TYPE, or an objfile-owned RANGE_TYPE. |
| 1147 | |
| 1148 | BIT_STRIDE is taken into account only when BYTE_STRIDE_PROP is NULL. |
| 1149 | If BIT_STRIDE is not zero, build a packed array type whose element |
| 1150 | size is BIT_STRIDE. Otherwise, ignore this parameter. |
| 1151 | |
| 1152 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 1153 | sure it is TYPE_CODE_UNDEF before we bash it into an array |
| 1154 | type? */ |
| 1155 | |
| 1156 | struct type * |
| 1157 | create_array_type_with_stride (struct type *result_type, |
| 1158 | struct type *element_type, |
| 1159 | struct type *range_type, |
| 1160 | struct dynamic_prop *byte_stride_prop, |
| 1161 | unsigned int bit_stride) |
| 1162 | { |
| 1163 | if (byte_stride_prop != NULL |
| 1164 | && byte_stride_prop->kind == PROP_CONST) |
| 1165 | { |
| 1166 | /* The byte stride is actually not dynamic. Pretend we were |
| 1167 | called with bit_stride set instead of byte_stride_prop. |
| 1168 | This will give us the same result type, while avoiding |
| 1169 | the need to handle this as a special case. */ |
| 1170 | bit_stride = byte_stride_prop->data.const_val * 8; |
| 1171 | byte_stride_prop = NULL; |
| 1172 | } |
| 1173 | |
| 1174 | if (result_type == NULL) |
| 1175 | result_type = alloc_type_copy (range_type); |
| 1176 | |
| 1177 | TYPE_CODE (result_type) = TYPE_CODE_ARRAY; |
| 1178 | TYPE_TARGET_TYPE (result_type) = element_type; |
| 1179 | if (byte_stride_prop == NULL |
| 1180 | && has_static_range (TYPE_RANGE_DATA (range_type)) |
| 1181 | && (!type_not_associated (result_type) |
| 1182 | && !type_not_allocated (result_type))) |
| 1183 | { |
| 1184 | LONGEST low_bound, high_bound; |
| 1185 | |
| 1186 | if (get_discrete_bounds (range_type, &low_bound, &high_bound) < 0) |
| 1187 | low_bound = high_bound = 0; |
| 1188 | element_type = check_typedef (element_type); |
| 1189 | /* Be careful when setting the array length. Ada arrays can be |
| 1190 | empty arrays with the high_bound being smaller than the low_bound. |
| 1191 | In such cases, the array length should be zero. */ |
| 1192 | if (high_bound < low_bound) |
| 1193 | TYPE_LENGTH (result_type) = 0; |
| 1194 | else if (bit_stride > 0) |
| 1195 | TYPE_LENGTH (result_type) = |
| 1196 | (bit_stride * (high_bound - low_bound + 1) + 7) / 8; |
| 1197 | else |
| 1198 | TYPE_LENGTH (result_type) = |
| 1199 | TYPE_LENGTH (element_type) * (high_bound - low_bound + 1); |
| 1200 | } |
| 1201 | else |
| 1202 | { |
| 1203 | /* This type is dynamic and its length needs to be computed |
| 1204 | on demand. In the meantime, avoid leaving the TYPE_LENGTH |
| 1205 | undefined by setting it to zero. Although we are not expected |
| 1206 | to trust TYPE_LENGTH in this case, setting the size to zero |
| 1207 | allows us to avoid allocating objects of random sizes in case |
| 1208 | we accidently do. */ |
| 1209 | TYPE_LENGTH (result_type) = 0; |
| 1210 | } |
| 1211 | |
| 1212 | TYPE_NFIELDS (result_type) = 1; |
| 1213 | TYPE_FIELDS (result_type) = |
| 1214 | (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); |
| 1215 | TYPE_INDEX_TYPE (result_type) = range_type; |
| 1216 | if (byte_stride_prop != NULL) |
| 1217 | add_dyn_prop (DYN_PROP_BYTE_STRIDE, *byte_stride_prop, result_type); |
| 1218 | else if (bit_stride > 0) |
| 1219 | TYPE_FIELD_BITSIZE (result_type, 0) = bit_stride; |
| 1220 | |
| 1221 | /* TYPE_TARGET_STUB will take care of zero length arrays. */ |
| 1222 | if (TYPE_LENGTH (result_type) == 0) |
| 1223 | TYPE_TARGET_STUB (result_type) = 1; |
| 1224 | |
| 1225 | return result_type; |
| 1226 | } |
| 1227 | |
| 1228 | /* Same as create_array_type_with_stride but with no bit_stride |
| 1229 | (BIT_STRIDE = 0), thus building an unpacked array. */ |
| 1230 | |
| 1231 | struct type * |
| 1232 | create_array_type (struct type *result_type, |
| 1233 | struct type *element_type, |
| 1234 | struct type *range_type) |
| 1235 | { |
| 1236 | return create_array_type_with_stride (result_type, element_type, |
| 1237 | range_type, NULL, 0); |
| 1238 | } |
| 1239 | |
| 1240 | struct type * |
| 1241 | lookup_array_range_type (struct type *element_type, |
| 1242 | LONGEST low_bound, LONGEST high_bound) |
| 1243 | { |
| 1244 | struct type *index_type; |
| 1245 | struct type *range_type; |
| 1246 | |
| 1247 | if (TYPE_OBJFILE_OWNED (element_type)) |
| 1248 | index_type = objfile_type (TYPE_OWNER (element_type).objfile)->builtin_int; |
| 1249 | else |
| 1250 | index_type = builtin_type (get_type_arch (element_type))->builtin_int; |
| 1251 | range_type = create_static_range_type (NULL, index_type, |
| 1252 | low_bound, high_bound); |
| 1253 | |
| 1254 | return create_array_type (NULL, element_type, range_type); |
| 1255 | } |
| 1256 | |
| 1257 | /* Create a string type using either a blank type supplied in |
| 1258 | RESULT_TYPE, or creating a new type. String types are similar |
| 1259 | enough to array of char types that we can use create_array_type to |
| 1260 | build the basic type and then bash it into a string type. |
| 1261 | |
| 1262 | For fixed length strings, the range type contains 0 as the lower |
| 1263 | bound and the length of the string minus one as the upper bound. |
| 1264 | |
| 1265 | FIXME: Maybe we should check the TYPE_CODE of RESULT_TYPE to make |
| 1266 | sure it is TYPE_CODE_UNDEF before we bash it into a string |
| 1267 | type? */ |
| 1268 | |
| 1269 | struct type * |
| 1270 | create_string_type (struct type *result_type, |
| 1271 | struct type *string_char_type, |
| 1272 | struct type *range_type) |
| 1273 | { |
| 1274 | result_type = create_array_type (result_type, |
| 1275 | string_char_type, |
| 1276 | range_type); |
| 1277 | TYPE_CODE (result_type) = TYPE_CODE_STRING; |
| 1278 | return result_type; |
| 1279 | } |
| 1280 | |
| 1281 | struct type * |
| 1282 | lookup_string_range_type (struct type *string_char_type, |
| 1283 | LONGEST low_bound, LONGEST high_bound) |
| 1284 | { |
| 1285 | struct type *result_type; |
| 1286 | |
| 1287 | result_type = lookup_array_range_type (string_char_type, |
| 1288 | low_bound, high_bound); |
| 1289 | TYPE_CODE (result_type) = TYPE_CODE_STRING; |
| 1290 | return result_type; |
| 1291 | } |
| 1292 | |
| 1293 | struct type * |
| 1294 | create_set_type (struct type *result_type, struct type *domain_type) |
| 1295 | { |
| 1296 | if (result_type == NULL) |
| 1297 | result_type = alloc_type_copy (domain_type); |
| 1298 | |
| 1299 | TYPE_CODE (result_type) = TYPE_CODE_SET; |
| 1300 | TYPE_NFIELDS (result_type) = 1; |
| 1301 | TYPE_FIELDS (result_type) |
| 1302 | = (struct field *) TYPE_ZALLOC (result_type, sizeof (struct field)); |
| 1303 | |
| 1304 | if (!TYPE_STUB (domain_type)) |
| 1305 | { |
| 1306 | LONGEST low_bound, high_bound, bit_length; |
| 1307 | |
| 1308 | if (get_discrete_bounds (domain_type, &low_bound, &high_bound) < 0) |
| 1309 | low_bound = high_bound = 0; |
| 1310 | bit_length = high_bound - low_bound + 1; |
| 1311 | TYPE_LENGTH (result_type) |
| 1312 | = (bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; |
| 1313 | if (low_bound >= 0) |
| 1314 | TYPE_UNSIGNED (result_type) = 1; |
| 1315 | } |
| 1316 | TYPE_FIELD_TYPE (result_type, 0) = domain_type; |
| 1317 | |
| 1318 | return result_type; |
| 1319 | } |
| 1320 | |
| 1321 | /* Convert ARRAY_TYPE to a vector type. This may modify ARRAY_TYPE |
| 1322 | and any array types nested inside it. */ |
| 1323 | |
| 1324 | void |
| 1325 | make_vector_type (struct type *array_type) |
| 1326 | { |
| 1327 | struct type *inner_array, *elt_type; |
| 1328 | int flags; |
| 1329 | |
| 1330 | /* Find the innermost array type, in case the array is |
| 1331 | multi-dimensional. */ |
| 1332 | inner_array = array_type; |
| 1333 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) |
| 1334 | inner_array = TYPE_TARGET_TYPE (inner_array); |
| 1335 | |
| 1336 | elt_type = TYPE_TARGET_TYPE (inner_array); |
| 1337 | if (TYPE_CODE (elt_type) == TYPE_CODE_INT) |
| 1338 | { |
| 1339 | flags = TYPE_INSTANCE_FLAGS (elt_type) | TYPE_INSTANCE_FLAG_NOTTEXT; |
| 1340 | elt_type = make_qualified_type (elt_type, flags, NULL); |
| 1341 | TYPE_TARGET_TYPE (inner_array) = elt_type; |
| 1342 | } |
| 1343 | |
| 1344 | TYPE_VECTOR (array_type) = 1; |
| 1345 | } |
| 1346 | |
| 1347 | struct type * |
| 1348 | init_vector_type (struct type *elt_type, int n) |
| 1349 | { |
| 1350 | struct type *array_type; |
| 1351 | |
| 1352 | array_type = lookup_array_range_type (elt_type, 0, n - 1); |
| 1353 | make_vector_type (array_type); |
| 1354 | return array_type; |
| 1355 | } |
| 1356 | |
| 1357 | /* Internal routine called by TYPE_SELF_TYPE to return the type that TYPE |
| 1358 | belongs to. In c++ this is the class of "this", but TYPE_THIS_TYPE is too |
| 1359 | confusing. "self" is a common enough replacement for "this". |
| 1360 | TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or |
| 1361 | TYPE_CODE_METHOD. */ |
| 1362 | |
| 1363 | struct type * |
| 1364 | internal_type_self_type (struct type *type) |
| 1365 | { |
| 1366 | switch (TYPE_CODE (type)) |
| 1367 | { |
| 1368 | case TYPE_CODE_METHODPTR: |
| 1369 | case TYPE_CODE_MEMBERPTR: |
| 1370 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) |
| 1371 | return NULL; |
| 1372 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE); |
| 1373 | return TYPE_MAIN_TYPE (type)->type_specific.self_type; |
| 1374 | case TYPE_CODE_METHOD: |
| 1375 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) |
| 1376 | return NULL; |
| 1377 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC); |
| 1378 | return TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type; |
| 1379 | default: |
| 1380 | gdb_assert_not_reached ("bad type"); |
| 1381 | } |
| 1382 | } |
| 1383 | |
| 1384 | /* Set the type of the class that TYPE belongs to. |
| 1385 | In c++ this is the class of "this". |
| 1386 | TYPE must be one of TYPE_CODE_METHODPTR, TYPE_CODE_MEMBERPTR, or |
| 1387 | TYPE_CODE_METHOD. */ |
| 1388 | |
| 1389 | void |
| 1390 | set_type_self_type (struct type *type, struct type *self_type) |
| 1391 | { |
| 1392 | switch (TYPE_CODE (type)) |
| 1393 | { |
| 1394 | case TYPE_CODE_METHODPTR: |
| 1395 | case TYPE_CODE_MEMBERPTR: |
| 1396 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) |
| 1397 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_SELF_TYPE; |
| 1398 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_SELF_TYPE); |
| 1399 | TYPE_MAIN_TYPE (type)->type_specific.self_type = self_type; |
| 1400 | break; |
| 1401 | case TYPE_CODE_METHOD: |
| 1402 | if (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE) |
| 1403 | INIT_FUNC_SPECIFIC (type); |
| 1404 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_FUNC); |
| 1405 | TYPE_MAIN_TYPE (type)->type_specific.func_stuff->self_type = self_type; |
| 1406 | break; |
| 1407 | default: |
| 1408 | gdb_assert_not_reached ("bad type"); |
| 1409 | } |
| 1410 | } |
| 1411 | |
| 1412 | /* Smash TYPE to be a type of pointers to members of SELF_TYPE with type |
| 1413 | TO_TYPE. A member pointer is a wierd thing -- it amounts to a |
| 1414 | typed offset into a struct, e.g. "an int at offset 8". A MEMBER |
| 1415 | TYPE doesn't include the offset (that's the value of the MEMBER |
| 1416 | itself), but does include the structure type into which it points |
| 1417 | (for some reason). |
| 1418 | |
| 1419 | When "smashing" the type, we preserve the objfile that the old type |
| 1420 | pointed to, since we aren't changing where the type is actually |
| 1421 | allocated. */ |
| 1422 | |
| 1423 | void |
| 1424 | smash_to_memberptr_type (struct type *type, struct type *self_type, |
| 1425 | struct type *to_type) |
| 1426 | { |
| 1427 | smash_type (type); |
| 1428 | TYPE_CODE (type) = TYPE_CODE_MEMBERPTR; |
| 1429 | TYPE_TARGET_TYPE (type) = to_type; |
| 1430 | set_type_self_type (type, self_type); |
| 1431 | /* Assume that a data member pointer is the same size as a normal |
| 1432 | pointer. */ |
| 1433 | TYPE_LENGTH (type) |
| 1434 | = gdbarch_ptr_bit (get_type_arch (to_type)) / TARGET_CHAR_BIT; |
| 1435 | } |
| 1436 | |
| 1437 | /* Smash TYPE to be a type of pointer to methods type TO_TYPE. |
| 1438 | |
| 1439 | When "smashing" the type, we preserve the objfile that the old type |
| 1440 | pointed to, since we aren't changing where the type is actually |
| 1441 | allocated. */ |
| 1442 | |
| 1443 | void |
| 1444 | smash_to_methodptr_type (struct type *type, struct type *to_type) |
| 1445 | { |
| 1446 | smash_type (type); |
| 1447 | TYPE_CODE (type) = TYPE_CODE_METHODPTR; |
| 1448 | TYPE_TARGET_TYPE (type) = to_type; |
| 1449 | set_type_self_type (type, TYPE_SELF_TYPE (to_type)); |
| 1450 | TYPE_LENGTH (type) = cplus_method_ptr_size (to_type); |
| 1451 | } |
| 1452 | |
| 1453 | /* Smash TYPE to be a type of method of SELF_TYPE with type TO_TYPE. |
| 1454 | METHOD just means `function that gets an extra "this" argument'. |
| 1455 | |
| 1456 | When "smashing" the type, we preserve the objfile that the old type |
| 1457 | pointed to, since we aren't changing where the type is actually |
| 1458 | allocated. */ |
| 1459 | |
| 1460 | void |
| 1461 | smash_to_method_type (struct type *type, struct type *self_type, |
| 1462 | struct type *to_type, struct field *args, |
| 1463 | int nargs, int varargs) |
| 1464 | { |
| 1465 | smash_type (type); |
| 1466 | TYPE_CODE (type) = TYPE_CODE_METHOD; |
| 1467 | TYPE_TARGET_TYPE (type) = to_type; |
| 1468 | set_type_self_type (type, self_type); |
| 1469 | TYPE_FIELDS (type) = args; |
| 1470 | TYPE_NFIELDS (type) = nargs; |
| 1471 | if (varargs) |
| 1472 | TYPE_VARARGS (type) = 1; |
| 1473 | TYPE_LENGTH (type) = 1; /* In practice, this is never needed. */ |
| 1474 | } |
| 1475 | |
| 1476 | /* A wrapper of TYPE_NAME which calls error if the type is anonymous. |
| 1477 | Since GCC PR debug/47510 DWARF provides associated information to detect the |
| 1478 | anonymous class linkage name from its typedef. |
| 1479 | |
| 1480 | Parameter TYPE should not yet have CHECK_TYPEDEF applied, this function will |
| 1481 | apply it itself. */ |
| 1482 | |
| 1483 | const char * |
| 1484 | type_name_or_error (struct type *type) |
| 1485 | { |
| 1486 | struct type *saved_type = type; |
| 1487 | const char *name; |
| 1488 | struct objfile *objfile; |
| 1489 | |
| 1490 | type = check_typedef (type); |
| 1491 | |
| 1492 | name = TYPE_NAME (type); |
| 1493 | if (name != NULL) |
| 1494 | return name; |
| 1495 | |
| 1496 | name = TYPE_NAME (saved_type); |
| 1497 | objfile = TYPE_OBJFILE (saved_type); |
| 1498 | error (_("Invalid anonymous type %s [in module %s], GCC PR debug/47510 bug?"), |
| 1499 | name ? name : "<anonymous>", |
| 1500 | objfile ? objfile_name (objfile) : "<arch>"); |
| 1501 | } |
| 1502 | |
| 1503 | /* Lookup a typedef or primitive type named NAME, visible in lexical |
| 1504 | block BLOCK. If NOERR is nonzero, return zero if NAME is not |
| 1505 | suitably defined. */ |
| 1506 | |
| 1507 | struct type * |
| 1508 | lookup_typename (const struct language_defn *language, |
| 1509 | struct gdbarch *gdbarch, const char *name, |
| 1510 | const struct block *block, int noerr) |
| 1511 | { |
| 1512 | struct symbol *sym; |
| 1513 | |
| 1514 | sym = lookup_symbol_in_language (name, block, VAR_DOMAIN, |
| 1515 | language->la_language, NULL).symbol; |
| 1516 | if (sym != NULL && SYMBOL_CLASS (sym) == LOC_TYPEDEF) |
| 1517 | return SYMBOL_TYPE (sym); |
| 1518 | |
| 1519 | if (noerr) |
| 1520 | return NULL; |
| 1521 | error (_("No type named %s."), name); |
| 1522 | } |
| 1523 | |
| 1524 | struct type * |
| 1525 | lookup_unsigned_typename (const struct language_defn *language, |
| 1526 | struct gdbarch *gdbarch, const char *name) |
| 1527 | { |
| 1528 | char *uns = (char *) alloca (strlen (name) + 10); |
| 1529 | |
| 1530 | strcpy (uns, "unsigned "); |
| 1531 | strcpy (uns + 9, name); |
| 1532 | return lookup_typename (language, gdbarch, uns, NULL, 0); |
| 1533 | } |
| 1534 | |
| 1535 | struct type * |
| 1536 | lookup_signed_typename (const struct language_defn *language, |
| 1537 | struct gdbarch *gdbarch, const char *name) |
| 1538 | { |
| 1539 | struct type *t; |
| 1540 | char *uns = (char *) alloca (strlen (name) + 8); |
| 1541 | |
| 1542 | strcpy (uns, "signed "); |
| 1543 | strcpy (uns + 7, name); |
| 1544 | t = lookup_typename (language, gdbarch, uns, NULL, 1); |
| 1545 | /* If we don't find "signed FOO" just try again with plain "FOO". */ |
| 1546 | if (t != NULL) |
| 1547 | return t; |
| 1548 | return lookup_typename (language, gdbarch, name, NULL, 0); |
| 1549 | } |
| 1550 | |
| 1551 | /* Lookup a structure type named "struct NAME", |
| 1552 | visible in lexical block BLOCK. */ |
| 1553 | |
| 1554 | struct type * |
| 1555 | lookup_struct (const char *name, const struct block *block) |
| 1556 | { |
| 1557 | struct symbol *sym; |
| 1558 | |
| 1559 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
| 1560 | |
| 1561 | if (sym == NULL) |
| 1562 | { |
| 1563 | error (_("No struct type named %s."), name); |
| 1564 | } |
| 1565 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) |
| 1566 | { |
| 1567 | error (_("This context has class, union or enum %s, not a struct."), |
| 1568 | name); |
| 1569 | } |
| 1570 | return (SYMBOL_TYPE (sym)); |
| 1571 | } |
| 1572 | |
| 1573 | /* Lookup a union type named "union NAME", |
| 1574 | visible in lexical block BLOCK. */ |
| 1575 | |
| 1576 | struct type * |
| 1577 | lookup_union (const char *name, const struct block *block) |
| 1578 | { |
| 1579 | struct symbol *sym; |
| 1580 | struct type *t; |
| 1581 | |
| 1582 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
| 1583 | |
| 1584 | if (sym == NULL) |
| 1585 | error (_("No union type named %s."), name); |
| 1586 | |
| 1587 | t = SYMBOL_TYPE (sym); |
| 1588 | |
| 1589 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
| 1590 | return t; |
| 1591 | |
| 1592 | /* If we get here, it's not a union. */ |
| 1593 | error (_("This context has class, struct or enum %s, not a union."), |
| 1594 | name); |
| 1595 | } |
| 1596 | |
| 1597 | /* Lookup an enum type named "enum NAME", |
| 1598 | visible in lexical block BLOCK. */ |
| 1599 | |
| 1600 | struct type * |
| 1601 | lookup_enum (const char *name, const struct block *block) |
| 1602 | { |
| 1603 | struct symbol *sym; |
| 1604 | |
| 1605 | sym = lookup_symbol (name, block, STRUCT_DOMAIN, 0).symbol; |
| 1606 | if (sym == NULL) |
| 1607 | { |
| 1608 | error (_("No enum type named %s."), name); |
| 1609 | } |
| 1610 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_ENUM) |
| 1611 | { |
| 1612 | error (_("This context has class, struct or union %s, not an enum."), |
| 1613 | name); |
| 1614 | } |
| 1615 | return (SYMBOL_TYPE (sym)); |
| 1616 | } |
| 1617 | |
| 1618 | /* Lookup a template type named "template NAME<TYPE>", |
| 1619 | visible in lexical block BLOCK. */ |
| 1620 | |
| 1621 | struct type * |
| 1622 | lookup_template_type (const char *name, struct type *type, |
| 1623 | const struct block *block) |
| 1624 | { |
| 1625 | struct symbol *sym; |
| 1626 | char *nam = (char *) |
| 1627 | alloca (strlen (name) + strlen (TYPE_NAME (type)) + 4); |
| 1628 | |
| 1629 | strcpy (nam, name); |
| 1630 | strcat (nam, "<"); |
| 1631 | strcat (nam, TYPE_NAME (type)); |
| 1632 | strcat (nam, " >"); /* FIXME, extra space still introduced in gcc? */ |
| 1633 | |
| 1634 | sym = lookup_symbol (nam, block, VAR_DOMAIN, 0).symbol; |
| 1635 | |
| 1636 | if (sym == NULL) |
| 1637 | { |
| 1638 | error (_("No template type named %s."), name); |
| 1639 | } |
| 1640 | if (TYPE_CODE (SYMBOL_TYPE (sym)) != TYPE_CODE_STRUCT) |
| 1641 | { |
| 1642 | error (_("This context has class, union or enum %s, not a struct."), |
| 1643 | name); |
| 1644 | } |
| 1645 | return (SYMBOL_TYPE (sym)); |
| 1646 | } |
| 1647 | |
| 1648 | /* See gdbtypes.h. */ |
| 1649 | |
| 1650 | struct_elt |
| 1651 | lookup_struct_elt (struct type *type, const char *name, int noerr) |
| 1652 | { |
| 1653 | int i; |
| 1654 | |
| 1655 | for (;;) |
| 1656 | { |
| 1657 | type = check_typedef (type); |
| 1658 | if (TYPE_CODE (type) != TYPE_CODE_PTR |
| 1659 | && TYPE_CODE (type) != TYPE_CODE_REF) |
| 1660 | break; |
| 1661 | type = TYPE_TARGET_TYPE (type); |
| 1662 | } |
| 1663 | |
| 1664 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT |
| 1665 | && TYPE_CODE (type) != TYPE_CODE_UNION) |
| 1666 | { |
| 1667 | std::string type_name = type_to_string (type); |
| 1668 | error (_("Type %s is not a structure or union type."), |
| 1669 | type_name.c_str ()); |
| 1670 | } |
| 1671 | |
| 1672 | for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--) |
| 1673 | { |
| 1674 | const char *t_field_name = TYPE_FIELD_NAME (type, i); |
| 1675 | |
| 1676 | if (t_field_name && (strcmp_iw (t_field_name, name) == 0)) |
| 1677 | { |
| 1678 | return {&TYPE_FIELD (type, i), TYPE_FIELD_BITPOS (type, i)}; |
| 1679 | } |
| 1680 | else if (!t_field_name || *t_field_name == '\0') |
| 1681 | { |
| 1682 | struct_elt elt |
| 1683 | = lookup_struct_elt (TYPE_FIELD_TYPE (type, i), name, 1); |
| 1684 | if (elt.field != NULL) |
| 1685 | { |
| 1686 | elt.offset += TYPE_FIELD_BITPOS (type, i); |
| 1687 | return elt; |
| 1688 | } |
| 1689 | } |
| 1690 | } |
| 1691 | |
| 1692 | /* OK, it's not in this class. Recursively check the baseclasses. */ |
| 1693 | for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--) |
| 1694 | { |
| 1695 | struct_elt elt = lookup_struct_elt (TYPE_BASECLASS (type, i), name, 1); |
| 1696 | if (elt.field != NULL) |
| 1697 | return elt; |
| 1698 | } |
| 1699 | |
| 1700 | if (noerr) |
| 1701 | return {nullptr, 0}; |
| 1702 | |
| 1703 | std::string type_name = type_to_string (type); |
| 1704 | error (_("Type %s has no component named %s."), type_name.c_str (), name); |
| 1705 | } |
| 1706 | |
| 1707 | /* See gdbtypes.h. */ |
| 1708 | |
| 1709 | struct type * |
| 1710 | lookup_struct_elt_type (struct type *type, const char *name, int noerr) |
| 1711 | { |
| 1712 | struct_elt elt = lookup_struct_elt (type, name, noerr); |
| 1713 | if (elt.field != NULL) |
| 1714 | return FIELD_TYPE (*elt.field); |
| 1715 | else |
| 1716 | return NULL; |
| 1717 | } |
| 1718 | |
| 1719 | /* Store in *MAX the largest number representable by unsigned integer type |
| 1720 | TYPE. */ |
| 1721 | |
| 1722 | void |
| 1723 | get_unsigned_type_max (struct type *type, ULONGEST *max) |
| 1724 | { |
| 1725 | unsigned int n; |
| 1726 | |
| 1727 | type = check_typedef (type); |
| 1728 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && TYPE_UNSIGNED (type)); |
| 1729 | gdb_assert (TYPE_LENGTH (type) <= sizeof (ULONGEST)); |
| 1730 | |
| 1731 | /* Written this way to avoid overflow. */ |
| 1732 | n = TYPE_LENGTH (type) * TARGET_CHAR_BIT; |
| 1733 | *max = ((((ULONGEST) 1 << (n - 1)) - 1) << 1) | 1; |
| 1734 | } |
| 1735 | |
| 1736 | /* Store in *MIN, *MAX the smallest and largest numbers representable by |
| 1737 | signed integer type TYPE. */ |
| 1738 | |
| 1739 | void |
| 1740 | get_signed_type_minmax (struct type *type, LONGEST *min, LONGEST *max) |
| 1741 | { |
| 1742 | unsigned int n; |
| 1743 | |
| 1744 | type = check_typedef (type); |
| 1745 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_INT && !TYPE_UNSIGNED (type)); |
| 1746 | gdb_assert (TYPE_LENGTH (type) <= sizeof (LONGEST)); |
| 1747 | |
| 1748 | n = TYPE_LENGTH (type) * TARGET_CHAR_BIT; |
| 1749 | *min = -((ULONGEST) 1 << (n - 1)); |
| 1750 | *max = ((ULONGEST) 1 << (n - 1)) - 1; |
| 1751 | } |
| 1752 | |
| 1753 | /* Internal routine called by TYPE_VPTR_FIELDNO to return the value of |
| 1754 | cplus_stuff.vptr_fieldno. |
| 1755 | |
| 1756 | cplus_stuff is initialized to cplus_struct_default which does not |
| 1757 | set vptr_fieldno to -1 for portability reasons (IWBN to use C99 |
| 1758 | designated initializers). We cope with that here. */ |
| 1759 | |
| 1760 | int |
| 1761 | internal_type_vptr_fieldno (struct type *type) |
| 1762 | { |
| 1763 | type = check_typedef (type); |
| 1764 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 1765 | || TYPE_CODE (type) == TYPE_CODE_UNION); |
| 1766 | if (!HAVE_CPLUS_STRUCT (type)) |
| 1767 | return -1; |
| 1768 | return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno; |
| 1769 | } |
| 1770 | |
| 1771 | /* Set the value of cplus_stuff.vptr_fieldno. */ |
| 1772 | |
| 1773 | void |
| 1774 | set_type_vptr_fieldno (struct type *type, int fieldno) |
| 1775 | { |
| 1776 | type = check_typedef (type); |
| 1777 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 1778 | || TYPE_CODE (type) == TYPE_CODE_UNION); |
| 1779 | if (!HAVE_CPLUS_STRUCT (type)) |
| 1780 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
| 1781 | TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_fieldno = fieldno; |
| 1782 | } |
| 1783 | |
| 1784 | /* Internal routine called by TYPE_VPTR_BASETYPE to return the value of |
| 1785 | cplus_stuff.vptr_basetype. */ |
| 1786 | |
| 1787 | struct type * |
| 1788 | internal_type_vptr_basetype (struct type *type) |
| 1789 | { |
| 1790 | type = check_typedef (type); |
| 1791 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 1792 | || TYPE_CODE (type) == TYPE_CODE_UNION); |
| 1793 | gdb_assert (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF); |
| 1794 | return TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype; |
| 1795 | } |
| 1796 | |
| 1797 | /* Set the value of cplus_stuff.vptr_basetype. */ |
| 1798 | |
| 1799 | void |
| 1800 | set_type_vptr_basetype (struct type *type, struct type *basetype) |
| 1801 | { |
| 1802 | type = check_typedef (type); |
| 1803 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 1804 | || TYPE_CODE (type) == TYPE_CODE_UNION); |
| 1805 | if (!HAVE_CPLUS_STRUCT (type)) |
| 1806 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
| 1807 | TYPE_RAW_CPLUS_SPECIFIC (type)->vptr_basetype = basetype; |
| 1808 | } |
| 1809 | |
| 1810 | /* Lookup the vptr basetype/fieldno values for TYPE. |
| 1811 | If found store vptr_basetype in *BASETYPEP if non-NULL, and return |
| 1812 | vptr_fieldno. Also, if found and basetype is from the same objfile, |
| 1813 | cache the results. |
| 1814 | If not found, return -1 and ignore BASETYPEP. |
| 1815 | Callers should be aware that in some cases (for example, |
| 1816 | the type or one of its baseclasses is a stub type and we are |
| 1817 | debugging a .o file, or the compiler uses DWARF-2 and is not GCC), |
| 1818 | this function will not be able to find the |
| 1819 | virtual function table pointer, and vptr_fieldno will remain -1 and |
| 1820 | vptr_basetype will remain NULL or incomplete. */ |
| 1821 | |
| 1822 | int |
| 1823 | get_vptr_fieldno (struct type *type, struct type **basetypep) |
| 1824 | { |
| 1825 | type = check_typedef (type); |
| 1826 | |
| 1827 | if (TYPE_VPTR_FIELDNO (type) < 0) |
| 1828 | { |
| 1829 | int i; |
| 1830 | |
| 1831 | /* We must start at zero in case the first (and only) baseclass |
| 1832 | is virtual (and hence we cannot share the table pointer). */ |
| 1833 | for (i = 0; i < TYPE_N_BASECLASSES (type); i++) |
| 1834 | { |
| 1835 | struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
| 1836 | int fieldno; |
| 1837 | struct type *basetype; |
| 1838 | |
| 1839 | fieldno = get_vptr_fieldno (baseclass, &basetype); |
| 1840 | if (fieldno >= 0) |
| 1841 | { |
| 1842 | /* If the type comes from a different objfile we can't cache |
| 1843 | it, it may have a different lifetime. PR 2384 */ |
| 1844 | if (TYPE_OBJFILE (type) == TYPE_OBJFILE (basetype)) |
| 1845 | { |
| 1846 | set_type_vptr_fieldno (type, fieldno); |
| 1847 | set_type_vptr_basetype (type, basetype); |
| 1848 | } |
| 1849 | if (basetypep) |
| 1850 | *basetypep = basetype; |
| 1851 | return fieldno; |
| 1852 | } |
| 1853 | } |
| 1854 | |
| 1855 | /* Not found. */ |
| 1856 | return -1; |
| 1857 | } |
| 1858 | else |
| 1859 | { |
| 1860 | if (basetypep) |
| 1861 | *basetypep = TYPE_VPTR_BASETYPE (type); |
| 1862 | return TYPE_VPTR_FIELDNO (type); |
| 1863 | } |
| 1864 | } |
| 1865 | |
| 1866 | static void |
| 1867 | stub_noname_complaint (void) |
| 1868 | { |
| 1869 | complaint (_("stub type has NULL name")); |
| 1870 | } |
| 1871 | |
| 1872 | /* Return nonzero if TYPE has a DYN_PROP_BYTE_STRIDE dynamic property |
| 1873 | attached to it, and that property has a non-constant value. */ |
| 1874 | |
| 1875 | static int |
| 1876 | array_type_has_dynamic_stride (struct type *type) |
| 1877 | { |
| 1878 | struct dynamic_prop *prop = get_dyn_prop (DYN_PROP_BYTE_STRIDE, type); |
| 1879 | |
| 1880 | return (prop != NULL && prop->kind != PROP_CONST); |
| 1881 | } |
| 1882 | |
| 1883 | /* Worker for is_dynamic_type. */ |
| 1884 | |
| 1885 | static int |
| 1886 | is_dynamic_type_internal (struct type *type, int top_level) |
| 1887 | { |
| 1888 | type = check_typedef (type); |
| 1889 | |
| 1890 | /* We only want to recognize references at the outermost level. */ |
| 1891 | if (top_level && TYPE_CODE (type) == TYPE_CODE_REF) |
| 1892 | type = check_typedef (TYPE_TARGET_TYPE (type)); |
| 1893 | |
| 1894 | /* Types that have a dynamic TYPE_DATA_LOCATION are considered |
| 1895 | dynamic, even if the type itself is statically defined. |
| 1896 | From a user's point of view, this may appear counter-intuitive; |
| 1897 | but it makes sense in this context, because the point is to determine |
| 1898 | whether any part of the type needs to be resolved before it can |
| 1899 | be exploited. */ |
| 1900 | if (TYPE_DATA_LOCATION (type) != NULL |
| 1901 | && (TYPE_DATA_LOCATION_KIND (type) == PROP_LOCEXPR |
| 1902 | || TYPE_DATA_LOCATION_KIND (type) == PROP_LOCLIST)) |
| 1903 | return 1; |
| 1904 | |
| 1905 | if (TYPE_ASSOCIATED_PROP (type)) |
| 1906 | return 1; |
| 1907 | |
| 1908 | if (TYPE_ALLOCATED_PROP (type)) |
| 1909 | return 1; |
| 1910 | |
| 1911 | switch (TYPE_CODE (type)) |
| 1912 | { |
| 1913 | case TYPE_CODE_RANGE: |
| 1914 | { |
| 1915 | /* A range type is obviously dynamic if it has at least one |
| 1916 | dynamic bound. But also consider the range type to be |
| 1917 | dynamic when its subtype is dynamic, even if the bounds |
| 1918 | of the range type are static. It allows us to assume that |
| 1919 | the subtype of a static range type is also static. */ |
| 1920 | return (!has_static_range (TYPE_RANGE_DATA (type)) |
| 1921 | || is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0)); |
| 1922 | } |
| 1923 | |
| 1924 | case TYPE_CODE_ARRAY: |
| 1925 | { |
| 1926 | gdb_assert (TYPE_NFIELDS (type) == 1); |
| 1927 | |
| 1928 | /* The array is dynamic if either the bounds are dynamic... */ |
| 1929 | if (is_dynamic_type_internal (TYPE_INDEX_TYPE (type), 0)) |
| 1930 | return 1; |
| 1931 | /* ... or the elements it contains have a dynamic contents... */ |
| 1932 | if (is_dynamic_type_internal (TYPE_TARGET_TYPE (type), 0)) |
| 1933 | return 1; |
| 1934 | /* ... or if it has a dynamic stride... */ |
| 1935 | if (array_type_has_dynamic_stride (type)) |
| 1936 | return 1; |
| 1937 | return 0; |
| 1938 | } |
| 1939 | |
| 1940 | case TYPE_CODE_STRUCT: |
| 1941 | case TYPE_CODE_UNION: |
| 1942 | { |
| 1943 | int i; |
| 1944 | |
| 1945 | for (i = 0; i < TYPE_NFIELDS (type); ++i) |
| 1946 | if (!field_is_static (&TYPE_FIELD (type, i)) |
| 1947 | && is_dynamic_type_internal (TYPE_FIELD_TYPE (type, i), 0)) |
| 1948 | return 1; |
| 1949 | } |
| 1950 | break; |
| 1951 | } |
| 1952 | |
| 1953 | return 0; |
| 1954 | } |
| 1955 | |
| 1956 | /* See gdbtypes.h. */ |
| 1957 | |
| 1958 | int |
| 1959 | is_dynamic_type (struct type *type) |
| 1960 | { |
| 1961 | return is_dynamic_type_internal (type, 1); |
| 1962 | } |
| 1963 | |
| 1964 | static struct type *resolve_dynamic_type_internal |
| 1965 | (struct type *type, struct property_addr_info *addr_stack, int top_level); |
| 1966 | |
| 1967 | /* Given a dynamic range type (dyn_range_type) and a stack of |
| 1968 | struct property_addr_info elements, return a static version |
| 1969 | of that type. */ |
| 1970 | |
| 1971 | static struct type * |
| 1972 | resolve_dynamic_range (struct type *dyn_range_type, |
| 1973 | struct property_addr_info *addr_stack) |
| 1974 | { |
| 1975 | CORE_ADDR value; |
| 1976 | struct type *static_range_type, *static_target_type; |
| 1977 | const struct dynamic_prop *prop; |
| 1978 | struct dynamic_prop low_bound, high_bound; |
| 1979 | |
| 1980 | gdb_assert (TYPE_CODE (dyn_range_type) == TYPE_CODE_RANGE); |
| 1981 | |
| 1982 | prop = &TYPE_RANGE_DATA (dyn_range_type)->low; |
| 1983 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
| 1984 | { |
| 1985 | low_bound.kind = PROP_CONST; |
| 1986 | low_bound.data.const_val = value; |
| 1987 | } |
| 1988 | else |
| 1989 | { |
| 1990 | low_bound.kind = PROP_UNDEFINED; |
| 1991 | low_bound.data.const_val = 0; |
| 1992 | } |
| 1993 | |
| 1994 | prop = &TYPE_RANGE_DATA (dyn_range_type)->high; |
| 1995 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
| 1996 | { |
| 1997 | high_bound.kind = PROP_CONST; |
| 1998 | high_bound.data.const_val = value; |
| 1999 | |
| 2000 | if (TYPE_RANGE_DATA (dyn_range_type)->flag_upper_bound_is_count) |
| 2001 | high_bound.data.const_val |
| 2002 | = low_bound.data.const_val + high_bound.data.const_val - 1; |
| 2003 | } |
| 2004 | else |
| 2005 | { |
| 2006 | high_bound.kind = PROP_UNDEFINED; |
| 2007 | high_bound.data.const_val = 0; |
| 2008 | } |
| 2009 | |
| 2010 | static_target_type |
| 2011 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (dyn_range_type), |
| 2012 | addr_stack, 0); |
| 2013 | static_range_type = create_range_type (copy_type (dyn_range_type), |
| 2014 | static_target_type, |
| 2015 | &low_bound, &high_bound); |
| 2016 | TYPE_RANGE_DATA (static_range_type)->flag_bound_evaluated = 1; |
| 2017 | return static_range_type; |
| 2018 | } |
| 2019 | |
| 2020 | /* Resolves dynamic bound values of an array type TYPE to static ones. |
| 2021 | ADDR_STACK is a stack of struct property_addr_info to be used |
| 2022 | if needed during the dynamic resolution. */ |
| 2023 | |
| 2024 | static struct type * |
| 2025 | resolve_dynamic_array (struct type *type, |
| 2026 | struct property_addr_info *addr_stack) |
| 2027 | { |
| 2028 | CORE_ADDR value; |
| 2029 | struct type *elt_type; |
| 2030 | struct type *range_type; |
| 2031 | struct type *ary_dim; |
| 2032 | struct dynamic_prop *prop; |
| 2033 | unsigned int bit_stride = 0; |
| 2034 | |
| 2035 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_ARRAY); |
| 2036 | |
| 2037 | type = copy_type (type); |
| 2038 | |
| 2039 | elt_type = type; |
| 2040 | range_type = check_typedef (TYPE_INDEX_TYPE (elt_type)); |
| 2041 | range_type = resolve_dynamic_range (range_type, addr_stack); |
| 2042 | |
| 2043 | /* Resolve allocated/associated here before creating a new array type, which |
| 2044 | will update the length of the array accordingly. */ |
| 2045 | prop = TYPE_ALLOCATED_PROP (type); |
| 2046 | if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
| 2047 | { |
| 2048 | TYPE_DYN_PROP_ADDR (prop) = value; |
| 2049 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; |
| 2050 | } |
| 2051 | prop = TYPE_ASSOCIATED_PROP (type); |
| 2052 | if (prop != NULL && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
| 2053 | { |
| 2054 | TYPE_DYN_PROP_ADDR (prop) = value; |
| 2055 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; |
| 2056 | } |
| 2057 | |
| 2058 | ary_dim = check_typedef (TYPE_TARGET_TYPE (elt_type)); |
| 2059 | |
| 2060 | if (ary_dim != NULL && TYPE_CODE (ary_dim) == TYPE_CODE_ARRAY) |
| 2061 | elt_type = resolve_dynamic_array (ary_dim, addr_stack); |
| 2062 | else |
| 2063 | elt_type = TYPE_TARGET_TYPE (type); |
| 2064 | |
| 2065 | prop = get_dyn_prop (DYN_PROP_BYTE_STRIDE, type); |
| 2066 | if (prop != NULL) |
| 2067 | { |
| 2068 | if (dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
| 2069 | { |
| 2070 | remove_dyn_prop (DYN_PROP_BYTE_STRIDE, type); |
| 2071 | bit_stride = (unsigned int) (value * 8); |
| 2072 | } |
| 2073 | else |
| 2074 | { |
| 2075 | /* Could be a bug in our code, but it could also happen |
| 2076 | if the DWARF info is not correct. Issue a warning, |
| 2077 | and assume no byte/bit stride (leave bit_stride = 0). */ |
| 2078 | warning (_("cannot determine array stride for type %s"), |
| 2079 | TYPE_NAME (type) ? TYPE_NAME (type) : "<no name>"); |
| 2080 | } |
| 2081 | } |
| 2082 | else |
| 2083 | bit_stride = TYPE_FIELD_BITSIZE (type, 0); |
| 2084 | |
| 2085 | return create_array_type_with_stride (type, elt_type, range_type, NULL, |
| 2086 | bit_stride); |
| 2087 | } |
| 2088 | |
| 2089 | /* Resolve dynamic bounds of members of the union TYPE to static |
| 2090 | bounds. ADDR_STACK is a stack of struct property_addr_info |
| 2091 | to be used if needed during the dynamic resolution. */ |
| 2092 | |
| 2093 | static struct type * |
| 2094 | resolve_dynamic_union (struct type *type, |
| 2095 | struct property_addr_info *addr_stack) |
| 2096 | { |
| 2097 | struct type *resolved_type; |
| 2098 | int i; |
| 2099 | unsigned int max_len = 0; |
| 2100 | |
| 2101 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); |
| 2102 | |
| 2103 | resolved_type = copy_type (type); |
| 2104 | TYPE_FIELDS (resolved_type) |
| 2105 | = (struct field *) TYPE_ALLOC (resolved_type, |
| 2106 | TYPE_NFIELDS (resolved_type) |
| 2107 | * sizeof (struct field)); |
| 2108 | memcpy (TYPE_FIELDS (resolved_type), |
| 2109 | TYPE_FIELDS (type), |
| 2110 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); |
| 2111 | for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i) |
| 2112 | { |
| 2113 | struct type *t; |
| 2114 | |
| 2115 | if (field_is_static (&TYPE_FIELD (type, i))) |
| 2116 | continue; |
| 2117 | |
| 2118 | t = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i), |
| 2119 | addr_stack, 0); |
| 2120 | TYPE_FIELD_TYPE (resolved_type, i) = t; |
| 2121 | if (TYPE_LENGTH (t) > max_len) |
| 2122 | max_len = TYPE_LENGTH (t); |
| 2123 | } |
| 2124 | |
| 2125 | TYPE_LENGTH (resolved_type) = max_len; |
| 2126 | return resolved_type; |
| 2127 | } |
| 2128 | |
| 2129 | /* Resolve dynamic bounds of members of the struct TYPE to static |
| 2130 | bounds. ADDR_STACK is a stack of struct property_addr_info to |
| 2131 | be used if needed during the dynamic resolution. */ |
| 2132 | |
| 2133 | static struct type * |
| 2134 | resolve_dynamic_struct (struct type *type, |
| 2135 | struct property_addr_info *addr_stack) |
| 2136 | { |
| 2137 | struct type *resolved_type; |
| 2138 | int i; |
| 2139 | unsigned resolved_type_bit_length = 0; |
| 2140 | |
| 2141 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_STRUCT); |
| 2142 | gdb_assert (TYPE_NFIELDS (type) > 0); |
| 2143 | |
| 2144 | resolved_type = copy_type (type); |
| 2145 | TYPE_FIELDS (resolved_type) |
| 2146 | = (struct field *) TYPE_ALLOC (resolved_type, |
| 2147 | TYPE_NFIELDS (resolved_type) |
| 2148 | * sizeof (struct field)); |
| 2149 | memcpy (TYPE_FIELDS (resolved_type), |
| 2150 | TYPE_FIELDS (type), |
| 2151 | TYPE_NFIELDS (resolved_type) * sizeof (struct field)); |
| 2152 | for (i = 0; i < TYPE_NFIELDS (resolved_type); ++i) |
| 2153 | { |
| 2154 | unsigned new_bit_length; |
| 2155 | struct property_addr_info pinfo; |
| 2156 | |
| 2157 | if (field_is_static (&TYPE_FIELD (type, i))) |
| 2158 | continue; |
| 2159 | |
| 2160 | /* As we know this field is not a static field, the field's |
| 2161 | field_loc_kind should be FIELD_LOC_KIND_BITPOS. Verify |
| 2162 | this is the case, but only trigger a simple error rather |
| 2163 | than an internal error if that fails. While failing |
| 2164 | that verification indicates a bug in our code, the error |
| 2165 | is not severe enough to suggest to the user he stops |
| 2166 | his debugging session because of it. */ |
| 2167 | if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_BITPOS) |
| 2168 | error (_("Cannot determine struct field location" |
| 2169 | " (invalid location kind)")); |
| 2170 | |
| 2171 | pinfo.type = check_typedef (TYPE_FIELD_TYPE (type, i)); |
| 2172 | pinfo.valaddr = addr_stack->valaddr; |
| 2173 | pinfo.addr |
| 2174 | = (addr_stack->addr |
| 2175 | + (TYPE_FIELD_BITPOS (resolved_type, i) / TARGET_CHAR_BIT)); |
| 2176 | pinfo.next = addr_stack; |
| 2177 | |
| 2178 | TYPE_FIELD_TYPE (resolved_type, i) |
| 2179 | = resolve_dynamic_type_internal (TYPE_FIELD_TYPE (resolved_type, i), |
| 2180 | &pinfo, 0); |
| 2181 | gdb_assert (TYPE_FIELD_LOC_KIND (resolved_type, i) |
| 2182 | == FIELD_LOC_KIND_BITPOS); |
| 2183 | |
| 2184 | new_bit_length = TYPE_FIELD_BITPOS (resolved_type, i); |
| 2185 | if (TYPE_FIELD_BITSIZE (resolved_type, i) != 0) |
| 2186 | new_bit_length += TYPE_FIELD_BITSIZE (resolved_type, i); |
| 2187 | else |
| 2188 | new_bit_length += (TYPE_LENGTH (TYPE_FIELD_TYPE (resolved_type, i)) |
| 2189 | * TARGET_CHAR_BIT); |
| 2190 | |
| 2191 | /* Normally, we would use the position and size of the last field |
| 2192 | to determine the size of the enclosing structure. But GCC seems |
| 2193 | to be encoding the position of some fields incorrectly when |
| 2194 | the struct contains a dynamic field that is not placed last. |
| 2195 | So we compute the struct size based on the field that has |
| 2196 | the highest position + size - probably the best we can do. */ |
| 2197 | if (new_bit_length > resolved_type_bit_length) |
| 2198 | resolved_type_bit_length = new_bit_length; |
| 2199 | } |
| 2200 | |
| 2201 | /* The length of a type won't change for fortran, but it does for C and Ada. |
| 2202 | For fortran the size of dynamic fields might change over time but not the |
| 2203 | type length of the structure. If we adapt it, we run into problems |
| 2204 | when calculating the element offset for arrays of structs. */ |
| 2205 | if (current_language->la_language != language_fortran) |
| 2206 | TYPE_LENGTH (resolved_type) |
| 2207 | = (resolved_type_bit_length + TARGET_CHAR_BIT - 1) / TARGET_CHAR_BIT; |
| 2208 | |
| 2209 | /* The Ada language uses this field as a cache for static fixed types: reset |
| 2210 | it as RESOLVED_TYPE must have its own static fixed type. */ |
| 2211 | TYPE_TARGET_TYPE (resolved_type) = NULL; |
| 2212 | |
| 2213 | return resolved_type; |
| 2214 | } |
| 2215 | |
| 2216 | /* Worker for resolved_dynamic_type. */ |
| 2217 | |
| 2218 | static struct type * |
| 2219 | resolve_dynamic_type_internal (struct type *type, |
| 2220 | struct property_addr_info *addr_stack, |
| 2221 | int top_level) |
| 2222 | { |
| 2223 | struct type *real_type = check_typedef (type); |
| 2224 | struct type *resolved_type = type; |
| 2225 | struct dynamic_prop *prop; |
| 2226 | CORE_ADDR value; |
| 2227 | |
| 2228 | if (!is_dynamic_type_internal (real_type, top_level)) |
| 2229 | return type; |
| 2230 | |
| 2231 | if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
| 2232 | { |
| 2233 | resolved_type = copy_type (type); |
| 2234 | TYPE_TARGET_TYPE (resolved_type) |
| 2235 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), addr_stack, |
| 2236 | top_level); |
| 2237 | } |
| 2238 | else |
| 2239 | { |
| 2240 | /* Before trying to resolve TYPE, make sure it is not a stub. */ |
| 2241 | type = real_type; |
| 2242 | |
| 2243 | switch (TYPE_CODE (type)) |
| 2244 | { |
| 2245 | case TYPE_CODE_REF: |
| 2246 | { |
| 2247 | struct property_addr_info pinfo; |
| 2248 | |
| 2249 | pinfo.type = check_typedef (TYPE_TARGET_TYPE (type)); |
| 2250 | pinfo.valaddr = NULL; |
| 2251 | if (addr_stack->valaddr != NULL) |
| 2252 | pinfo.addr = extract_typed_address (addr_stack->valaddr, type); |
| 2253 | else |
| 2254 | pinfo.addr = read_memory_typed_address (addr_stack->addr, type); |
| 2255 | pinfo.next = addr_stack; |
| 2256 | |
| 2257 | resolved_type = copy_type (type); |
| 2258 | TYPE_TARGET_TYPE (resolved_type) |
| 2259 | = resolve_dynamic_type_internal (TYPE_TARGET_TYPE (type), |
| 2260 | &pinfo, top_level); |
| 2261 | break; |
| 2262 | } |
| 2263 | |
| 2264 | case TYPE_CODE_ARRAY: |
| 2265 | resolved_type = resolve_dynamic_array (type, addr_stack); |
| 2266 | break; |
| 2267 | |
| 2268 | case TYPE_CODE_RANGE: |
| 2269 | resolved_type = resolve_dynamic_range (type, addr_stack); |
| 2270 | break; |
| 2271 | |
| 2272 | case TYPE_CODE_UNION: |
| 2273 | resolved_type = resolve_dynamic_union (type, addr_stack); |
| 2274 | break; |
| 2275 | |
| 2276 | case TYPE_CODE_STRUCT: |
| 2277 | resolved_type = resolve_dynamic_struct (type, addr_stack); |
| 2278 | break; |
| 2279 | } |
| 2280 | } |
| 2281 | |
| 2282 | /* Resolve data_location attribute. */ |
| 2283 | prop = TYPE_DATA_LOCATION (resolved_type); |
| 2284 | if (prop != NULL |
| 2285 | && dwarf2_evaluate_property (prop, NULL, addr_stack, &value)) |
| 2286 | { |
| 2287 | TYPE_DYN_PROP_ADDR (prop) = value; |
| 2288 | TYPE_DYN_PROP_KIND (prop) = PROP_CONST; |
| 2289 | } |
| 2290 | |
| 2291 | return resolved_type; |
| 2292 | } |
| 2293 | |
| 2294 | /* See gdbtypes.h */ |
| 2295 | |
| 2296 | struct type * |
| 2297 | resolve_dynamic_type (struct type *type, const gdb_byte *valaddr, |
| 2298 | CORE_ADDR addr) |
| 2299 | { |
| 2300 | struct property_addr_info pinfo |
| 2301 | = {check_typedef (type), valaddr, addr, NULL}; |
| 2302 | |
| 2303 | return resolve_dynamic_type_internal (type, &pinfo, 1); |
| 2304 | } |
| 2305 | |
| 2306 | /* See gdbtypes.h */ |
| 2307 | |
| 2308 | struct dynamic_prop * |
| 2309 | get_dyn_prop (enum dynamic_prop_node_kind prop_kind, const struct type *type) |
| 2310 | { |
| 2311 | struct dynamic_prop_list *node = TYPE_DYN_PROP_LIST (type); |
| 2312 | |
| 2313 | while (node != NULL) |
| 2314 | { |
| 2315 | if (node->prop_kind == prop_kind) |
| 2316 | return &node->prop; |
| 2317 | node = node->next; |
| 2318 | } |
| 2319 | return NULL; |
| 2320 | } |
| 2321 | |
| 2322 | /* See gdbtypes.h */ |
| 2323 | |
| 2324 | void |
| 2325 | add_dyn_prop (enum dynamic_prop_node_kind prop_kind, struct dynamic_prop prop, |
| 2326 | struct type *type) |
| 2327 | { |
| 2328 | struct dynamic_prop_list *temp; |
| 2329 | |
| 2330 | gdb_assert (TYPE_OBJFILE_OWNED (type)); |
| 2331 | |
| 2332 | temp = XOBNEW (&TYPE_OBJFILE (type)->objfile_obstack, |
| 2333 | struct dynamic_prop_list); |
| 2334 | temp->prop_kind = prop_kind; |
| 2335 | temp->prop = prop; |
| 2336 | temp->next = TYPE_DYN_PROP_LIST (type); |
| 2337 | |
| 2338 | TYPE_DYN_PROP_LIST (type) = temp; |
| 2339 | } |
| 2340 | |
| 2341 | /* Remove dynamic property from TYPE in case it exists. */ |
| 2342 | |
| 2343 | void |
| 2344 | remove_dyn_prop (enum dynamic_prop_node_kind prop_kind, |
| 2345 | struct type *type) |
| 2346 | { |
| 2347 | struct dynamic_prop_list *prev_node, *curr_node; |
| 2348 | |
| 2349 | curr_node = TYPE_DYN_PROP_LIST (type); |
| 2350 | prev_node = NULL; |
| 2351 | |
| 2352 | while (NULL != curr_node) |
| 2353 | { |
| 2354 | if (curr_node->prop_kind == prop_kind) |
| 2355 | { |
| 2356 | /* Update the linked list but don't free anything. |
| 2357 | The property was allocated on objstack and it is not known |
| 2358 | if we are on top of it. Nevertheless, everything is released |
| 2359 | when the complete objstack is freed. */ |
| 2360 | if (NULL == prev_node) |
| 2361 | TYPE_DYN_PROP_LIST (type) = curr_node->next; |
| 2362 | else |
| 2363 | prev_node->next = curr_node->next; |
| 2364 | |
| 2365 | return; |
| 2366 | } |
| 2367 | |
| 2368 | prev_node = curr_node; |
| 2369 | curr_node = curr_node->next; |
| 2370 | } |
| 2371 | } |
| 2372 | |
| 2373 | /* Find the real type of TYPE. This function returns the real type, |
| 2374 | after removing all layers of typedefs, and completing opaque or stub |
| 2375 | types. Completion changes the TYPE argument, but stripping of |
| 2376 | typedefs does not. |
| 2377 | |
| 2378 | Instance flags (e.g. const/volatile) are preserved as typedefs are |
| 2379 | stripped. If necessary a new qualified form of the underlying type |
| 2380 | is created. |
| 2381 | |
| 2382 | NOTE: This will return a typedef if TYPE_TARGET_TYPE for the typedef has |
| 2383 | not been computed and we're either in the middle of reading symbols, or |
| 2384 | there was no name for the typedef in the debug info. |
| 2385 | |
| 2386 | NOTE: Lookup of opaque types can throw errors for invalid symbol files. |
| 2387 | QUITs in the symbol reading code can also throw. |
| 2388 | Thus this function can throw an exception. |
| 2389 | |
| 2390 | If TYPE is a TYPE_CODE_TYPEDEF, its length is updated to the length of |
| 2391 | the target type. |
| 2392 | |
| 2393 | If this is a stubbed struct (i.e. declared as struct foo *), see if |
| 2394 | we can find a full definition in some other file. If so, copy this |
| 2395 | definition, so we can use it in future. There used to be a comment |
| 2396 | (but not any code) that if we don't find a full definition, we'd |
| 2397 | set a flag so we don't spend time in the future checking the same |
| 2398 | type. That would be a mistake, though--we might load in more |
| 2399 | symbols which contain a full definition for the type. */ |
| 2400 | |
| 2401 | struct type * |
| 2402 | check_typedef (struct type *type) |
| 2403 | { |
| 2404 | struct type *orig_type = type; |
| 2405 | /* While we're removing typedefs, we don't want to lose qualifiers. |
| 2406 | E.g., const/volatile. */ |
| 2407 | int instance_flags = TYPE_INSTANCE_FLAGS (type); |
| 2408 | |
| 2409 | gdb_assert (type); |
| 2410 | |
| 2411 | while (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) |
| 2412 | { |
| 2413 | if (!TYPE_TARGET_TYPE (type)) |
| 2414 | { |
| 2415 | const char *name; |
| 2416 | struct symbol *sym; |
| 2417 | |
| 2418 | /* It is dangerous to call lookup_symbol if we are currently |
| 2419 | reading a symtab. Infinite recursion is one danger. */ |
| 2420 | if (currently_reading_symtab) |
| 2421 | return make_qualified_type (type, instance_flags, NULL); |
| 2422 | |
| 2423 | name = TYPE_NAME (type); |
| 2424 | /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or |
| 2425 | VAR_DOMAIN as appropriate? */ |
| 2426 | if (name == NULL) |
| 2427 | { |
| 2428 | stub_noname_complaint (); |
| 2429 | return make_qualified_type (type, instance_flags, NULL); |
| 2430 | } |
| 2431 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol; |
| 2432 | if (sym) |
| 2433 | TYPE_TARGET_TYPE (type) = SYMBOL_TYPE (sym); |
| 2434 | else /* TYPE_CODE_UNDEF */ |
| 2435 | TYPE_TARGET_TYPE (type) = alloc_type_arch (get_type_arch (type)); |
| 2436 | } |
| 2437 | type = TYPE_TARGET_TYPE (type); |
| 2438 | |
| 2439 | /* Preserve the instance flags as we traverse down the typedef chain. |
| 2440 | |
| 2441 | Handling address spaces/classes is nasty, what do we do if there's a |
| 2442 | conflict? |
| 2443 | E.g., what if an outer typedef marks the type as class_1 and an inner |
| 2444 | typedef marks the type as class_2? |
| 2445 | This is the wrong place to do such error checking. We leave it to |
| 2446 | the code that created the typedef in the first place to flag the |
| 2447 | error. We just pick the outer address space (akin to letting the |
| 2448 | outer cast in a chain of casting win), instead of assuming |
| 2449 | "it can't happen". */ |
| 2450 | { |
| 2451 | const int ALL_SPACES = (TYPE_INSTANCE_FLAG_CODE_SPACE |
| 2452 | | TYPE_INSTANCE_FLAG_DATA_SPACE); |
| 2453 | const int ALL_CLASSES = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL; |
| 2454 | int new_instance_flags = TYPE_INSTANCE_FLAGS (type); |
| 2455 | |
| 2456 | /* Treat code vs data spaces and address classes separately. */ |
| 2457 | if ((instance_flags & ALL_SPACES) != 0) |
| 2458 | new_instance_flags &= ~ALL_SPACES; |
| 2459 | if ((instance_flags & ALL_CLASSES) != 0) |
| 2460 | new_instance_flags &= ~ALL_CLASSES; |
| 2461 | |
| 2462 | instance_flags |= new_instance_flags; |
| 2463 | } |
| 2464 | } |
| 2465 | |
| 2466 | /* If this is a struct/class/union with no fields, then check |
| 2467 | whether a full definition exists somewhere else. This is for |
| 2468 | systems where a type definition with no fields is issued for such |
| 2469 | types, instead of identifying them as stub types in the first |
| 2470 | place. */ |
| 2471 | |
| 2472 | if (TYPE_IS_OPAQUE (type) |
| 2473 | && opaque_type_resolution |
| 2474 | && !currently_reading_symtab) |
| 2475 | { |
| 2476 | const char *name = TYPE_NAME (type); |
| 2477 | struct type *newtype; |
| 2478 | |
| 2479 | if (name == NULL) |
| 2480 | { |
| 2481 | stub_noname_complaint (); |
| 2482 | return make_qualified_type (type, instance_flags, NULL); |
| 2483 | } |
| 2484 | newtype = lookup_transparent_type (name); |
| 2485 | |
| 2486 | if (newtype) |
| 2487 | { |
| 2488 | /* If the resolved type and the stub are in the same |
| 2489 | objfile, then replace the stub type with the real deal. |
| 2490 | But if they're in separate objfiles, leave the stub |
| 2491 | alone; we'll just look up the transparent type every time |
| 2492 | we call check_typedef. We can't create pointers between |
| 2493 | types allocated to different objfiles, since they may |
| 2494 | have different lifetimes. Trying to copy NEWTYPE over to |
| 2495 | TYPE's objfile is pointless, too, since you'll have to |
| 2496 | move over any other types NEWTYPE refers to, which could |
| 2497 | be an unbounded amount of stuff. */ |
| 2498 | if (TYPE_OBJFILE (newtype) == TYPE_OBJFILE (type)) |
| 2499 | type = make_qualified_type (newtype, |
| 2500 | TYPE_INSTANCE_FLAGS (type), |
| 2501 | type); |
| 2502 | else |
| 2503 | type = newtype; |
| 2504 | } |
| 2505 | } |
| 2506 | /* Otherwise, rely on the stub flag being set for opaque/stubbed |
| 2507 | types. */ |
| 2508 | else if (TYPE_STUB (type) && !currently_reading_symtab) |
| 2509 | { |
| 2510 | const char *name = TYPE_NAME (type); |
| 2511 | /* FIXME: shouldn't we look in STRUCT_DOMAIN and/or VAR_DOMAIN |
| 2512 | as appropriate? */ |
| 2513 | struct symbol *sym; |
| 2514 | |
| 2515 | if (name == NULL) |
| 2516 | { |
| 2517 | stub_noname_complaint (); |
| 2518 | return make_qualified_type (type, instance_flags, NULL); |
| 2519 | } |
| 2520 | sym = lookup_symbol (name, 0, STRUCT_DOMAIN, 0).symbol; |
| 2521 | if (sym) |
| 2522 | { |
| 2523 | /* Same as above for opaque types, we can replace the stub |
| 2524 | with the complete type only if they are in the same |
| 2525 | objfile. */ |
| 2526 | if (TYPE_OBJFILE (SYMBOL_TYPE(sym)) == TYPE_OBJFILE (type)) |
| 2527 | type = make_qualified_type (SYMBOL_TYPE (sym), |
| 2528 | TYPE_INSTANCE_FLAGS (type), |
| 2529 | type); |
| 2530 | else |
| 2531 | type = SYMBOL_TYPE (sym); |
| 2532 | } |
| 2533 | } |
| 2534 | |
| 2535 | if (TYPE_TARGET_STUB (type)) |
| 2536 | { |
| 2537 | struct type *target_type = check_typedef (TYPE_TARGET_TYPE (type)); |
| 2538 | |
| 2539 | if (TYPE_STUB (target_type) || TYPE_TARGET_STUB (target_type)) |
| 2540 | { |
| 2541 | /* Nothing we can do. */ |
| 2542 | } |
| 2543 | else if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| 2544 | { |
| 2545 | TYPE_LENGTH (type) = TYPE_LENGTH (target_type); |
| 2546 | TYPE_TARGET_STUB (type) = 0; |
| 2547 | } |
| 2548 | } |
| 2549 | |
| 2550 | type = make_qualified_type (type, instance_flags, NULL); |
| 2551 | |
| 2552 | /* Cache TYPE_LENGTH for future use. */ |
| 2553 | TYPE_LENGTH (orig_type) = TYPE_LENGTH (type); |
| 2554 | |
| 2555 | return type; |
| 2556 | } |
| 2557 | |
| 2558 | /* Parse a type expression in the string [P..P+LENGTH). If an error |
| 2559 | occurs, silently return a void type. */ |
| 2560 | |
| 2561 | static struct type * |
| 2562 | safe_parse_type (struct gdbarch *gdbarch, char *p, int length) |
| 2563 | { |
| 2564 | struct ui_file *saved_gdb_stderr; |
| 2565 | struct type *type = NULL; /* Initialize to keep gcc happy. */ |
| 2566 | |
| 2567 | /* Suppress error messages. */ |
| 2568 | saved_gdb_stderr = gdb_stderr; |
| 2569 | gdb_stderr = &null_stream; |
| 2570 | |
| 2571 | /* Call parse_and_eval_type() without fear of longjmp()s. */ |
| 2572 | try |
| 2573 | { |
| 2574 | type = parse_and_eval_type (p, length); |
| 2575 | } |
| 2576 | catch (const gdb_exception_error &except) |
| 2577 | { |
| 2578 | type = builtin_type (gdbarch)->builtin_void; |
| 2579 | } |
| 2580 | |
| 2581 | /* Stop suppressing error messages. */ |
| 2582 | gdb_stderr = saved_gdb_stderr; |
| 2583 | |
| 2584 | return type; |
| 2585 | } |
| 2586 | |
| 2587 | /* Ugly hack to convert method stubs into method types. |
| 2588 | |
| 2589 | He ain't kiddin'. This demangles the name of the method into a |
| 2590 | string including argument types, parses out each argument type, |
| 2591 | generates a string casting a zero to that type, evaluates the |
| 2592 | string, and stuffs the resulting type into an argtype vector!!! |
| 2593 | Then it knows the type of the whole function (including argument |
| 2594 | types for overloading), which info used to be in the stab's but was |
| 2595 | removed to hack back the space required for them. */ |
| 2596 | |
| 2597 | static void |
| 2598 | check_stub_method (struct type *type, int method_id, int signature_id) |
| 2599 | { |
| 2600 | struct gdbarch *gdbarch = get_type_arch (type); |
| 2601 | struct fn_field *f; |
| 2602 | char *mangled_name = gdb_mangle_name (type, method_id, signature_id); |
| 2603 | char *demangled_name = gdb_demangle (mangled_name, |
| 2604 | DMGL_PARAMS | DMGL_ANSI); |
| 2605 | char *argtypetext, *p; |
| 2606 | int depth = 0, argcount = 1; |
| 2607 | struct field *argtypes; |
| 2608 | struct type *mtype; |
| 2609 | |
| 2610 | /* Make sure we got back a function string that we can use. */ |
| 2611 | if (demangled_name) |
| 2612 | p = strchr (demangled_name, '('); |
| 2613 | else |
| 2614 | p = NULL; |
| 2615 | |
| 2616 | if (demangled_name == NULL || p == NULL) |
| 2617 | error (_("Internal: Cannot demangle mangled name `%s'."), |
| 2618 | mangled_name); |
| 2619 | |
| 2620 | /* Now, read in the parameters that define this type. */ |
| 2621 | p += 1; |
| 2622 | argtypetext = p; |
| 2623 | while (*p) |
| 2624 | { |
| 2625 | if (*p == '(' || *p == '<') |
| 2626 | { |
| 2627 | depth += 1; |
| 2628 | } |
| 2629 | else if (*p == ')' || *p == '>') |
| 2630 | { |
| 2631 | depth -= 1; |
| 2632 | } |
| 2633 | else if (*p == ',' && depth == 0) |
| 2634 | { |
| 2635 | argcount += 1; |
| 2636 | } |
| 2637 | |
| 2638 | p += 1; |
| 2639 | } |
| 2640 | |
| 2641 | /* If we read one argument and it was ``void'', don't count it. */ |
| 2642 | if (startswith (argtypetext, "(void)")) |
| 2643 | argcount -= 1; |
| 2644 | |
| 2645 | /* We need one extra slot, for the THIS pointer. */ |
| 2646 | |
| 2647 | argtypes = (struct field *) |
| 2648 | TYPE_ALLOC (type, (argcount + 1) * sizeof (struct field)); |
| 2649 | p = argtypetext; |
| 2650 | |
| 2651 | /* Add THIS pointer for non-static methods. */ |
| 2652 | f = TYPE_FN_FIELDLIST1 (type, method_id); |
| 2653 | if (TYPE_FN_FIELD_STATIC_P (f, signature_id)) |
| 2654 | argcount = 0; |
| 2655 | else |
| 2656 | { |
| 2657 | argtypes[0].type = lookup_pointer_type (type); |
| 2658 | argcount = 1; |
| 2659 | } |
| 2660 | |
| 2661 | if (*p != ')') /* () means no args, skip while. */ |
| 2662 | { |
| 2663 | depth = 0; |
| 2664 | while (*p) |
| 2665 | { |
| 2666 | if (depth <= 0 && (*p == ',' || *p == ')')) |
| 2667 | { |
| 2668 | /* Avoid parsing of ellipsis, they will be handled below. |
| 2669 | Also avoid ``void'' as above. */ |
| 2670 | if (strncmp (argtypetext, "...", p - argtypetext) != 0 |
| 2671 | && strncmp (argtypetext, "void", p - argtypetext) != 0) |
| 2672 | { |
| 2673 | argtypes[argcount].type = |
| 2674 | safe_parse_type (gdbarch, argtypetext, p - argtypetext); |
| 2675 | argcount += 1; |
| 2676 | } |
| 2677 | argtypetext = p + 1; |
| 2678 | } |
| 2679 | |
| 2680 | if (*p == '(' || *p == '<') |
| 2681 | { |
| 2682 | depth += 1; |
| 2683 | } |
| 2684 | else if (*p == ')' || *p == '>') |
| 2685 | { |
| 2686 | depth -= 1; |
| 2687 | } |
| 2688 | |
| 2689 | p += 1; |
| 2690 | } |
| 2691 | } |
| 2692 | |
| 2693 | TYPE_FN_FIELD_PHYSNAME (f, signature_id) = mangled_name; |
| 2694 | |
| 2695 | /* Now update the old "stub" type into a real type. */ |
| 2696 | mtype = TYPE_FN_FIELD_TYPE (f, signature_id); |
| 2697 | /* MTYPE may currently be a function (TYPE_CODE_FUNC). |
| 2698 | We want a method (TYPE_CODE_METHOD). */ |
| 2699 | smash_to_method_type (mtype, type, TYPE_TARGET_TYPE (mtype), |
| 2700 | argtypes, argcount, p[-2] == '.'); |
| 2701 | TYPE_STUB (mtype) = 0; |
| 2702 | TYPE_FN_FIELD_STUB (f, signature_id) = 0; |
| 2703 | |
| 2704 | xfree (demangled_name); |
| 2705 | } |
| 2706 | |
| 2707 | /* This is the external interface to check_stub_method, above. This |
| 2708 | function unstubs all of the signatures for TYPE's METHOD_ID method |
| 2709 | name. After calling this function TYPE_FN_FIELD_STUB will be |
| 2710 | cleared for each signature and TYPE_FN_FIELDLIST_NAME will be |
| 2711 | correct. |
| 2712 | |
| 2713 | This function unfortunately can not die until stabs do. */ |
| 2714 | |
| 2715 | void |
| 2716 | check_stub_method_group (struct type *type, int method_id) |
| 2717 | { |
| 2718 | int len = TYPE_FN_FIELDLIST_LENGTH (type, method_id); |
| 2719 | struct fn_field *f = TYPE_FN_FIELDLIST1 (type, method_id); |
| 2720 | |
| 2721 | for (int j = 0; j < len; j++) |
| 2722 | { |
| 2723 | if (TYPE_FN_FIELD_STUB (f, j)) |
| 2724 | check_stub_method (type, method_id, j); |
| 2725 | } |
| 2726 | } |
| 2727 | |
| 2728 | /* Ensure it is in .rodata (if available) by workarounding GCC PR 44690. */ |
| 2729 | const struct cplus_struct_type cplus_struct_default = { }; |
| 2730 | |
| 2731 | void |
| 2732 | allocate_cplus_struct_type (struct type *type) |
| 2733 | { |
| 2734 | if (HAVE_CPLUS_STRUCT (type)) |
| 2735 | /* Structure was already allocated. Nothing more to do. */ |
| 2736 | return; |
| 2737 | |
| 2738 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF; |
| 2739 | TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type *) |
| 2740 | TYPE_ALLOC (type, sizeof (struct cplus_struct_type)); |
| 2741 | *(TYPE_RAW_CPLUS_SPECIFIC (type)) = cplus_struct_default; |
| 2742 | set_type_vptr_fieldno (type, -1); |
| 2743 | } |
| 2744 | |
| 2745 | const struct gnat_aux_type gnat_aux_default = |
| 2746 | { NULL }; |
| 2747 | |
| 2748 | /* Set the TYPE's type-specific kind to TYPE_SPECIFIC_GNAT_STUFF, |
| 2749 | and allocate the associated gnat-specific data. The gnat-specific |
| 2750 | data is also initialized to gnat_aux_default. */ |
| 2751 | |
| 2752 | void |
| 2753 | allocate_gnat_aux_type (struct type *type) |
| 2754 | { |
| 2755 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF; |
| 2756 | TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) |
| 2757 | TYPE_ALLOC (type, sizeof (struct gnat_aux_type)); |
| 2758 | *(TYPE_GNAT_SPECIFIC (type)) = gnat_aux_default; |
| 2759 | } |
| 2760 | |
| 2761 | /* Helper function to initialize a newly allocated type. Set type code |
| 2762 | to CODE and initialize the type-specific fields accordingly. */ |
| 2763 | |
| 2764 | static void |
| 2765 | set_type_code (struct type *type, enum type_code code) |
| 2766 | { |
| 2767 | TYPE_CODE (type) = code; |
| 2768 | |
| 2769 | switch (code) |
| 2770 | { |
| 2771 | case TYPE_CODE_STRUCT: |
| 2772 | case TYPE_CODE_UNION: |
| 2773 | case TYPE_CODE_NAMESPACE: |
| 2774 | INIT_CPLUS_SPECIFIC (type); |
| 2775 | break; |
| 2776 | case TYPE_CODE_FLT: |
| 2777 | TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FLOATFORMAT; |
| 2778 | break; |
| 2779 | case TYPE_CODE_FUNC: |
| 2780 | INIT_FUNC_SPECIFIC (type); |
| 2781 | break; |
| 2782 | } |
| 2783 | } |
| 2784 | |
| 2785 | /* Helper function to verify floating-point format and size. |
| 2786 | BIT is the type size in bits; if BIT equals -1, the size is |
| 2787 | determined by the floatformat. Returns size to be used. */ |
| 2788 | |
| 2789 | static int |
| 2790 | verify_floatformat (int bit, const struct floatformat *floatformat) |
| 2791 | { |
| 2792 | gdb_assert (floatformat != NULL); |
| 2793 | |
| 2794 | if (bit == -1) |
| 2795 | bit = floatformat->totalsize; |
| 2796 | |
| 2797 | gdb_assert (bit >= 0); |
| 2798 | gdb_assert (bit >= floatformat->totalsize); |
| 2799 | |
| 2800 | return bit; |
| 2801 | } |
| 2802 | |
| 2803 | /* Return the floating-point format for a floating-point variable of |
| 2804 | type TYPE. */ |
| 2805 | |
| 2806 | const struct floatformat * |
| 2807 | floatformat_from_type (const struct type *type) |
| 2808 | { |
| 2809 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT); |
| 2810 | gdb_assert (TYPE_FLOATFORMAT (type)); |
| 2811 | return TYPE_FLOATFORMAT (type); |
| 2812 | } |
| 2813 | |
| 2814 | /* Helper function to initialize the standard scalar types. |
| 2815 | |
| 2816 | If NAME is non-NULL, then it is used to initialize the type name. |
| 2817 | Note that NAME is not copied; it is required to have a lifetime at |
| 2818 | least as long as OBJFILE. */ |
| 2819 | |
| 2820 | struct type * |
| 2821 | init_type (struct objfile *objfile, enum type_code code, int bit, |
| 2822 | const char *name) |
| 2823 | { |
| 2824 | struct type *type; |
| 2825 | |
| 2826 | type = alloc_type (objfile); |
| 2827 | set_type_code (type, code); |
| 2828 | gdb_assert ((bit % TARGET_CHAR_BIT) == 0); |
| 2829 | TYPE_LENGTH (type) = bit / TARGET_CHAR_BIT; |
| 2830 | TYPE_NAME (type) = name; |
| 2831 | |
| 2832 | return type; |
| 2833 | } |
| 2834 | |
| 2835 | /* Allocate a TYPE_CODE_ERROR type structure associated with OBJFILE, |
| 2836 | to use with variables that have no debug info. NAME is the type |
| 2837 | name. */ |
| 2838 | |
| 2839 | static struct type * |
| 2840 | init_nodebug_var_type (struct objfile *objfile, const char *name) |
| 2841 | { |
| 2842 | return init_type (objfile, TYPE_CODE_ERROR, 0, name); |
| 2843 | } |
| 2844 | |
| 2845 | /* Allocate a TYPE_CODE_INT type structure associated with OBJFILE. |
| 2846 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 2847 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 2848 | |
| 2849 | struct type * |
| 2850 | init_integer_type (struct objfile *objfile, |
| 2851 | int bit, int unsigned_p, const char *name) |
| 2852 | { |
| 2853 | struct type *t; |
| 2854 | |
| 2855 | t = init_type (objfile, TYPE_CODE_INT, bit, name); |
| 2856 | if (unsigned_p) |
| 2857 | TYPE_UNSIGNED (t) = 1; |
| 2858 | |
| 2859 | return t; |
| 2860 | } |
| 2861 | |
| 2862 | /* Allocate a TYPE_CODE_CHAR type structure associated with OBJFILE. |
| 2863 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 2864 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 2865 | |
| 2866 | struct type * |
| 2867 | init_character_type (struct objfile *objfile, |
| 2868 | int bit, int unsigned_p, const char *name) |
| 2869 | { |
| 2870 | struct type *t; |
| 2871 | |
| 2872 | t = init_type (objfile, TYPE_CODE_CHAR, bit, name); |
| 2873 | if (unsigned_p) |
| 2874 | TYPE_UNSIGNED (t) = 1; |
| 2875 | |
| 2876 | return t; |
| 2877 | } |
| 2878 | |
| 2879 | /* Allocate a TYPE_CODE_BOOL type structure associated with OBJFILE. |
| 2880 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 2881 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 2882 | |
| 2883 | struct type * |
| 2884 | init_boolean_type (struct objfile *objfile, |
| 2885 | int bit, int unsigned_p, const char *name) |
| 2886 | { |
| 2887 | struct type *t; |
| 2888 | |
| 2889 | t = init_type (objfile, TYPE_CODE_BOOL, bit, name); |
| 2890 | if (unsigned_p) |
| 2891 | TYPE_UNSIGNED (t) = 1; |
| 2892 | |
| 2893 | return t; |
| 2894 | } |
| 2895 | |
| 2896 | /* Allocate a TYPE_CODE_FLT type structure associated with OBJFILE. |
| 2897 | BIT is the type size in bits; if BIT equals -1, the size is |
| 2898 | determined by the floatformat. NAME is the type name. Set the |
| 2899 | TYPE_FLOATFORMAT from FLOATFORMATS. */ |
| 2900 | |
| 2901 | struct type * |
| 2902 | init_float_type (struct objfile *objfile, |
| 2903 | int bit, const char *name, |
| 2904 | const struct floatformat **floatformats) |
| 2905 | { |
| 2906 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
| 2907 | const struct floatformat *fmt = floatformats[gdbarch_byte_order (gdbarch)]; |
| 2908 | struct type *t; |
| 2909 | |
| 2910 | bit = verify_floatformat (bit, fmt); |
| 2911 | t = init_type (objfile, TYPE_CODE_FLT, bit, name); |
| 2912 | TYPE_FLOATFORMAT (t) = fmt; |
| 2913 | |
| 2914 | return t; |
| 2915 | } |
| 2916 | |
| 2917 | /* Allocate a TYPE_CODE_DECFLOAT type structure associated with OBJFILE. |
| 2918 | BIT is the type size in bits. NAME is the type name. */ |
| 2919 | |
| 2920 | struct type * |
| 2921 | init_decfloat_type (struct objfile *objfile, int bit, const char *name) |
| 2922 | { |
| 2923 | struct type *t; |
| 2924 | |
| 2925 | t = init_type (objfile, TYPE_CODE_DECFLOAT, bit, name); |
| 2926 | return t; |
| 2927 | } |
| 2928 | |
| 2929 | /* Allocate a TYPE_CODE_COMPLEX type structure associated with OBJFILE. |
| 2930 | NAME is the type name. TARGET_TYPE is the component float type. */ |
| 2931 | |
| 2932 | struct type * |
| 2933 | init_complex_type (struct objfile *objfile, |
| 2934 | const char *name, struct type *target_type) |
| 2935 | { |
| 2936 | struct type *t; |
| 2937 | |
| 2938 | t = init_type (objfile, TYPE_CODE_COMPLEX, |
| 2939 | 2 * TYPE_LENGTH (target_type) * TARGET_CHAR_BIT, name); |
| 2940 | TYPE_TARGET_TYPE (t) = target_type; |
| 2941 | return t; |
| 2942 | } |
| 2943 | |
| 2944 | /* Allocate a TYPE_CODE_PTR type structure associated with OBJFILE. |
| 2945 | BIT is the pointer type size in bits. NAME is the type name. |
| 2946 | TARGET_TYPE is the pointer target type. Always sets the pointer type's |
| 2947 | TYPE_UNSIGNED flag. */ |
| 2948 | |
| 2949 | struct type * |
| 2950 | init_pointer_type (struct objfile *objfile, |
| 2951 | int bit, const char *name, struct type *target_type) |
| 2952 | { |
| 2953 | struct type *t; |
| 2954 | |
| 2955 | t = init_type (objfile, TYPE_CODE_PTR, bit, name); |
| 2956 | TYPE_TARGET_TYPE (t) = target_type; |
| 2957 | TYPE_UNSIGNED (t) = 1; |
| 2958 | return t; |
| 2959 | } |
| 2960 | |
| 2961 | /* See gdbtypes.h. */ |
| 2962 | |
| 2963 | unsigned |
| 2964 | type_raw_align (struct type *type) |
| 2965 | { |
| 2966 | if (type->align_log2 != 0) |
| 2967 | return 1 << (type->align_log2 - 1); |
| 2968 | return 0; |
| 2969 | } |
| 2970 | |
| 2971 | /* See gdbtypes.h. */ |
| 2972 | |
| 2973 | unsigned |
| 2974 | type_align (struct type *type) |
| 2975 | { |
| 2976 | /* Check alignment provided in the debug information. */ |
| 2977 | unsigned raw_align = type_raw_align (type); |
| 2978 | if (raw_align != 0) |
| 2979 | return raw_align; |
| 2980 | |
| 2981 | /* Allow the architecture to provide an alignment. */ |
| 2982 | struct gdbarch *arch = get_type_arch (type); |
| 2983 | ULONGEST align = gdbarch_type_align (arch, type); |
| 2984 | if (align != 0) |
| 2985 | return align; |
| 2986 | |
| 2987 | switch (TYPE_CODE (type)) |
| 2988 | { |
| 2989 | case TYPE_CODE_PTR: |
| 2990 | case TYPE_CODE_FUNC: |
| 2991 | case TYPE_CODE_FLAGS: |
| 2992 | case TYPE_CODE_INT: |
| 2993 | case TYPE_CODE_RANGE: |
| 2994 | case TYPE_CODE_FLT: |
| 2995 | case TYPE_CODE_ENUM: |
| 2996 | case TYPE_CODE_REF: |
| 2997 | case TYPE_CODE_RVALUE_REF: |
| 2998 | case TYPE_CODE_CHAR: |
| 2999 | case TYPE_CODE_BOOL: |
| 3000 | case TYPE_CODE_DECFLOAT: |
| 3001 | case TYPE_CODE_METHODPTR: |
| 3002 | case TYPE_CODE_MEMBERPTR: |
| 3003 | align = type_length_units (check_typedef (type)); |
| 3004 | break; |
| 3005 | |
| 3006 | case TYPE_CODE_ARRAY: |
| 3007 | case TYPE_CODE_COMPLEX: |
| 3008 | case TYPE_CODE_TYPEDEF: |
| 3009 | align = type_align (TYPE_TARGET_TYPE (type)); |
| 3010 | break; |
| 3011 | |
| 3012 | case TYPE_CODE_STRUCT: |
| 3013 | case TYPE_CODE_UNION: |
| 3014 | { |
| 3015 | int number_of_non_static_fields = 0; |
| 3016 | for (unsigned i = 0; i < TYPE_NFIELDS (type); ++i) |
| 3017 | { |
| 3018 | if (!field_is_static (&TYPE_FIELD (type, i))) |
| 3019 | { |
| 3020 | number_of_non_static_fields++; |
| 3021 | ULONGEST f_align = type_align (TYPE_FIELD_TYPE (type, i)); |
| 3022 | if (f_align == 0) |
| 3023 | { |
| 3024 | /* Don't pretend we know something we don't. */ |
| 3025 | align = 0; |
| 3026 | break; |
| 3027 | } |
| 3028 | if (f_align > align) |
| 3029 | align = f_align; |
| 3030 | } |
| 3031 | } |
| 3032 | /* A struct with no fields, or with only static fields has an |
| 3033 | alignment of 1. */ |
| 3034 | if (number_of_non_static_fields == 0) |
| 3035 | align = 1; |
| 3036 | } |
| 3037 | break; |
| 3038 | |
| 3039 | case TYPE_CODE_SET: |
| 3040 | case TYPE_CODE_STRING: |
| 3041 | /* Not sure what to do here, and these can't appear in C or C++ |
| 3042 | anyway. */ |
| 3043 | break; |
| 3044 | |
| 3045 | case TYPE_CODE_VOID: |
| 3046 | align = 1; |
| 3047 | break; |
| 3048 | |
| 3049 | case TYPE_CODE_ERROR: |
| 3050 | case TYPE_CODE_METHOD: |
| 3051 | default: |
| 3052 | break; |
| 3053 | } |
| 3054 | |
| 3055 | if ((align & (align - 1)) != 0) |
| 3056 | { |
| 3057 | /* Not a power of 2, so pass. */ |
| 3058 | align = 0; |
| 3059 | } |
| 3060 | |
| 3061 | return align; |
| 3062 | } |
| 3063 | |
| 3064 | /* See gdbtypes.h. */ |
| 3065 | |
| 3066 | bool |
| 3067 | set_type_align (struct type *type, ULONGEST align) |
| 3068 | { |
| 3069 | /* Must be a power of 2. Zero is ok. */ |
| 3070 | gdb_assert ((align & (align - 1)) == 0); |
| 3071 | |
| 3072 | unsigned result = 0; |
| 3073 | while (align != 0) |
| 3074 | { |
| 3075 | ++result; |
| 3076 | align >>= 1; |
| 3077 | } |
| 3078 | |
| 3079 | if (result >= (1 << TYPE_ALIGN_BITS)) |
| 3080 | return false; |
| 3081 | |
| 3082 | type->align_log2 = result; |
| 3083 | return true; |
| 3084 | } |
| 3085 | |
| 3086 | \f |
| 3087 | /* Queries on types. */ |
| 3088 | |
| 3089 | int |
| 3090 | can_dereference (struct type *t) |
| 3091 | { |
| 3092 | /* FIXME: Should we return true for references as well as |
| 3093 | pointers? */ |
| 3094 | t = check_typedef (t); |
| 3095 | return |
| 3096 | (t != NULL |
| 3097 | && TYPE_CODE (t) == TYPE_CODE_PTR |
| 3098 | && TYPE_CODE (TYPE_TARGET_TYPE (t)) != TYPE_CODE_VOID); |
| 3099 | } |
| 3100 | |
| 3101 | int |
| 3102 | is_integral_type (struct type *t) |
| 3103 | { |
| 3104 | t = check_typedef (t); |
| 3105 | return |
| 3106 | ((t != NULL) |
| 3107 | && ((TYPE_CODE (t) == TYPE_CODE_INT) |
| 3108 | || (TYPE_CODE (t) == TYPE_CODE_ENUM) |
| 3109 | || (TYPE_CODE (t) == TYPE_CODE_FLAGS) |
| 3110 | || (TYPE_CODE (t) == TYPE_CODE_CHAR) |
| 3111 | || (TYPE_CODE (t) == TYPE_CODE_RANGE) |
| 3112 | || (TYPE_CODE (t) == TYPE_CODE_BOOL))); |
| 3113 | } |
| 3114 | |
| 3115 | int |
| 3116 | is_floating_type (struct type *t) |
| 3117 | { |
| 3118 | t = check_typedef (t); |
| 3119 | return |
| 3120 | ((t != NULL) |
| 3121 | && ((TYPE_CODE (t) == TYPE_CODE_FLT) |
| 3122 | || (TYPE_CODE (t) == TYPE_CODE_DECFLOAT))); |
| 3123 | } |
| 3124 | |
| 3125 | /* Return true if TYPE is scalar. */ |
| 3126 | |
| 3127 | int |
| 3128 | is_scalar_type (struct type *type) |
| 3129 | { |
| 3130 | type = check_typedef (type); |
| 3131 | |
| 3132 | switch (TYPE_CODE (type)) |
| 3133 | { |
| 3134 | case TYPE_CODE_ARRAY: |
| 3135 | case TYPE_CODE_STRUCT: |
| 3136 | case TYPE_CODE_UNION: |
| 3137 | case TYPE_CODE_SET: |
| 3138 | case TYPE_CODE_STRING: |
| 3139 | return 0; |
| 3140 | default: |
| 3141 | return 1; |
| 3142 | } |
| 3143 | } |
| 3144 | |
| 3145 | /* Return true if T is scalar, or a composite type which in practice has |
| 3146 | the memory layout of a scalar type. E.g., an array or struct with only |
| 3147 | one scalar element inside it, or a union with only scalar elements. */ |
| 3148 | |
| 3149 | int |
| 3150 | is_scalar_type_recursive (struct type *t) |
| 3151 | { |
| 3152 | t = check_typedef (t); |
| 3153 | |
| 3154 | if (is_scalar_type (t)) |
| 3155 | return 1; |
| 3156 | /* Are we dealing with an array or string of known dimensions? */ |
| 3157 | else if ((TYPE_CODE (t) == TYPE_CODE_ARRAY |
| 3158 | || TYPE_CODE (t) == TYPE_CODE_STRING) && TYPE_NFIELDS (t) == 1 |
| 3159 | && TYPE_CODE (TYPE_INDEX_TYPE (t)) == TYPE_CODE_RANGE) |
| 3160 | { |
| 3161 | LONGEST low_bound, high_bound; |
| 3162 | struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (t)); |
| 3163 | |
| 3164 | get_discrete_bounds (TYPE_INDEX_TYPE (t), &low_bound, &high_bound); |
| 3165 | |
| 3166 | return high_bound == low_bound && is_scalar_type_recursive (elt_type); |
| 3167 | } |
| 3168 | /* Are we dealing with a struct with one element? */ |
| 3169 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT && TYPE_NFIELDS (t) == 1) |
| 3170 | return is_scalar_type_recursive (TYPE_FIELD_TYPE (t, 0)); |
| 3171 | else if (TYPE_CODE (t) == TYPE_CODE_UNION) |
| 3172 | { |
| 3173 | int i, n = TYPE_NFIELDS (t); |
| 3174 | |
| 3175 | /* If all elements of the union are scalar, then the union is scalar. */ |
| 3176 | for (i = 0; i < n; i++) |
| 3177 | if (!is_scalar_type_recursive (TYPE_FIELD_TYPE (t, i))) |
| 3178 | return 0; |
| 3179 | |
| 3180 | return 1; |
| 3181 | } |
| 3182 | |
| 3183 | return 0; |
| 3184 | } |
| 3185 | |
| 3186 | /* Return true is T is a class or a union. False otherwise. */ |
| 3187 | |
| 3188 | int |
| 3189 | class_or_union_p (const struct type *t) |
| 3190 | { |
| 3191 | return (TYPE_CODE (t) == TYPE_CODE_STRUCT |
| 3192 | || TYPE_CODE (t) == TYPE_CODE_UNION); |
| 3193 | } |
| 3194 | |
| 3195 | /* A helper function which returns true if types A and B represent the |
| 3196 | "same" class type. This is true if the types have the same main |
| 3197 | type, or the same name. */ |
| 3198 | |
| 3199 | int |
| 3200 | class_types_same_p (const struct type *a, const struct type *b) |
| 3201 | { |
| 3202 | return (TYPE_MAIN_TYPE (a) == TYPE_MAIN_TYPE (b) |
| 3203 | || (TYPE_NAME (a) && TYPE_NAME (b) |
| 3204 | && !strcmp (TYPE_NAME (a), TYPE_NAME (b)))); |
| 3205 | } |
| 3206 | |
| 3207 | /* If BASE is an ancestor of DCLASS return the distance between them. |
| 3208 | otherwise return -1; |
| 3209 | eg: |
| 3210 | |
| 3211 | class A {}; |
| 3212 | class B: public A {}; |
| 3213 | class C: public B {}; |
| 3214 | class D: C {}; |
| 3215 | |
| 3216 | distance_to_ancestor (A, A, 0) = 0 |
| 3217 | distance_to_ancestor (A, B, 0) = 1 |
| 3218 | distance_to_ancestor (A, C, 0) = 2 |
| 3219 | distance_to_ancestor (A, D, 0) = 3 |
| 3220 | |
| 3221 | If PUBLIC is 1 then only public ancestors are considered, |
| 3222 | and the function returns the distance only if BASE is a public ancestor |
| 3223 | of DCLASS. |
| 3224 | Eg: |
| 3225 | |
| 3226 | distance_to_ancestor (A, D, 1) = -1. */ |
| 3227 | |
| 3228 | static int |
| 3229 | distance_to_ancestor (struct type *base, struct type *dclass, int is_public) |
| 3230 | { |
| 3231 | int i; |
| 3232 | int d; |
| 3233 | |
| 3234 | base = check_typedef (base); |
| 3235 | dclass = check_typedef (dclass); |
| 3236 | |
| 3237 | if (class_types_same_p (base, dclass)) |
| 3238 | return 0; |
| 3239 | |
| 3240 | for (i = 0; i < TYPE_N_BASECLASSES (dclass); i++) |
| 3241 | { |
| 3242 | if (is_public && ! BASETYPE_VIA_PUBLIC (dclass, i)) |
| 3243 | continue; |
| 3244 | |
| 3245 | d = distance_to_ancestor (base, TYPE_BASECLASS (dclass, i), is_public); |
| 3246 | if (d >= 0) |
| 3247 | return 1 + d; |
| 3248 | } |
| 3249 | |
| 3250 | return -1; |
| 3251 | } |
| 3252 | |
| 3253 | /* Check whether BASE is an ancestor or base class or DCLASS |
| 3254 | Return 1 if so, and 0 if not. |
| 3255 | Note: If BASE and DCLASS are of the same type, this function |
| 3256 | will return 1. So for some class A, is_ancestor (A, A) will |
| 3257 | return 1. */ |
| 3258 | |
| 3259 | int |
| 3260 | is_ancestor (struct type *base, struct type *dclass) |
| 3261 | { |
| 3262 | return distance_to_ancestor (base, dclass, 0) >= 0; |
| 3263 | } |
| 3264 | |
| 3265 | /* Like is_ancestor, but only returns true when BASE is a public |
| 3266 | ancestor of DCLASS. */ |
| 3267 | |
| 3268 | int |
| 3269 | is_public_ancestor (struct type *base, struct type *dclass) |
| 3270 | { |
| 3271 | return distance_to_ancestor (base, dclass, 1) >= 0; |
| 3272 | } |
| 3273 | |
| 3274 | /* A helper function for is_unique_ancestor. */ |
| 3275 | |
| 3276 | static int |
| 3277 | is_unique_ancestor_worker (struct type *base, struct type *dclass, |
| 3278 | int *offset, |
| 3279 | const gdb_byte *valaddr, int embedded_offset, |
| 3280 | CORE_ADDR address, struct value *val) |
| 3281 | { |
| 3282 | int i, count = 0; |
| 3283 | |
| 3284 | base = check_typedef (base); |
| 3285 | dclass = check_typedef (dclass); |
| 3286 | |
| 3287 | for (i = 0; i < TYPE_N_BASECLASSES (dclass) && count < 2; ++i) |
| 3288 | { |
| 3289 | struct type *iter; |
| 3290 | int this_offset; |
| 3291 | |
| 3292 | iter = check_typedef (TYPE_BASECLASS (dclass, i)); |
| 3293 | |
| 3294 | this_offset = baseclass_offset (dclass, i, valaddr, embedded_offset, |
| 3295 | address, val); |
| 3296 | |
| 3297 | if (class_types_same_p (base, iter)) |
| 3298 | { |
| 3299 | /* If this is the first subclass, set *OFFSET and set count |
| 3300 | to 1. Otherwise, if this is at the same offset as |
| 3301 | previous instances, do nothing. Otherwise, increment |
| 3302 | count. */ |
| 3303 | if (*offset == -1) |
| 3304 | { |
| 3305 | *offset = this_offset; |
| 3306 | count = 1; |
| 3307 | } |
| 3308 | else if (this_offset == *offset) |
| 3309 | { |
| 3310 | /* Nothing. */ |
| 3311 | } |
| 3312 | else |
| 3313 | ++count; |
| 3314 | } |
| 3315 | else |
| 3316 | count += is_unique_ancestor_worker (base, iter, offset, |
| 3317 | valaddr, |
| 3318 | embedded_offset + this_offset, |
| 3319 | address, val); |
| 3320 | } |
| 3321 | |
| 3322 | return count; |
| 3323 | } |
| 3324 | |
| 3325 | /* Like is_ancestor, but only returns true if BASE is a unique base |
| 3326 | class of the type of VAL. */ |
| 3327 | |
| 3328 | int |
| 3329 | is_unique_ancestor (struct type *base, struct value *val) |
| 3330 | { |
| 3331 | int offset = -1; |
| 3332 | |
| 3333 | return is_unique_ancestor_worker (base, value_type (val), &offset, |
| 3334 | value_contents_for_printing (val), |
| 3335 | value_embedded_offset (val), |
| 3336 | value_address (val), val) == 1; |
| 3337 | } |
| 3338 | |
| 3339 | \f |
| 3340 | /* Overload resolution. */ |
| 3341 | |
| 3342 | /* Return the sum of the rank of A with the rank of B. */ |
| 3343 | |
| 3344 | struct rank |
| 3345 | sum_ranks (struct rank a, struct rank b) |
| 3346 | { |
| 3347 | struct rank c; |
| 3348 | c.rank = a.rank + b.rank; |
| 3349 | c.subrank = a.subrank + b.subrank; |
| 3350 | return c; |
| 3351 | } |
| 3352 | |
| 3353 | /* Compare rank A and B and return: |
| 3354 | 0 if a = b |
| 3355 | 1 if a is better than b |
| 3356 | -1 if b is better than a. */ |
| 3357 | |
| 3358 | int |
| 3359 | compare_ranks (struct rank a, struct rank b) |
| 3360 | { |
| 3361 | if (a.rank == b.rank) |
| 3362 | { |
| 3363 | if (a.subrank == b.subrank) |
| 3364 | return 0; |
| 3365 | if (a.subrank < b.subrank) |
| 3366 | return 1; |
| 3367 | if (a.subrank > b.subrank) |
| 3368 | return -1; |
| 3369 | } |
| 3370 | |
| 3371 | if (a.rank < b.rank) |
| 3372 | return 1; |
| 3373 | |
| 3374 | /* a.rank > b.rank */ |
| 3375 | return -1; |
| 3376 | } |
| 3377 | |
| 3378 | /* Functions for overload resolution begin here. */ |
| 3379 | |
| 3380 | /* Compare two badness vectors A and B and return the result. |
| 3381 | 0 => A and B are identical |
| 3382 | 1 => A and B are incomparable |
| 3383 | 2 => A is better than B |
| 3384 | 3 => A is worse than B */ |
| 3385 | |
| 3386 | int |
| 3387 | compare_badness (const badness_vector &a, const badness_vector &b) |
| 3388 | { |
| 3389 | int i; |
| 3390 | int tmp; |
| 3391 | short found_pos = 0; /* any positives in c? */ |
| 3392 | short found_neg = 0; /* any negatives in c? */ |
| 3393 | |
| 3394 | /* differing sizes => incomparable */ |
| 3395 | if (a.size () != b.size ()) |
| 3396 | return 1; |
| 3397 | |
| 3398 | /* Subtract b from a */ |
| 3399 | for (i = 0; i < a.size (); i++) |
| 3400 | { |
| 3401 | tmp = compare_ranks (b[i], a[i]); |
| 3402 | if (tmp > 0) |
| 3403 | found_pos = 1; |
| 3404 | else if (tmp < 0) |
| 3405 | found_neg = 1; |
| 3406 | } |
| 3407 | |
| 3408 | if (found_pos) |
| 3409 | { |
| 3410 | if (found_neg) |
| 3411 | return 1; /* incomparable */ |
| 3412 | else |
| 3413 | return 3; /* A > B */ |
| 3414 | } |
| 3415 | else |
| 3416 | /* no positives */ |
| 3417 | { |
| 3418 | if (found_neg) |
| 3419 | return 2; /* A < B */ |
| 3420 | else |
| 3421 | return 0; /* A == B */ |
| 3422 | } |
| 3423 | } |
| 3424 | |
| 3425 | /* Rank a function by comparing its parameter types (PARMS), to the |
| 3426 | types of an argument list (ARGS). Return the badness vector. This |
| 3427 | has ARGS.size() + 1 entries. */ |
| 3428 | |
| 3429 | badness_vector |
| 3430 | rank_function (gdb::array_view<type *> parms, |
| 3431 | gdb::array_view<value *> args) |
| 3432 | { |
| 3433 | /* add 1 for the length-match rank. */ |
| 3434 | badness_vector bv; |
| 3435 | bv.reserve (1 + args.size ()); |
| 3436 | |
| 3437 | /* First compare the lengths of the supplied lists. |
| 3438 | If there is a mismatch, set it to a high value. */ |
| 3439 | |
| 3440 | /* pai/1997-06-03 FIXME: when we have debug info about default |
| 3441 | arguments and ellipsis parameter lists, we should consider those |
| 3442 | and rank the length-match more finely. */ |
| 3443 | |
| 3444 | bv.push_back ((args.size () != parms.size ()) |
| 3445 | ? LENGTH_MISMATCH_BADNESS |
| 3446 | : EXACT_MATCH_BADNESS); |
| 3447 | |
| 3448 | /* Now rank all the parameters of the candidate function. */ |
| 3449 | size_t min_len = std::min (parms.size (), args.size ()); |
| 3450 | |
| 3451 | for (size_t i = 0; i < min_len; i++) |
| 3452 | bv.push_back (rank_one_type (parms[i], value_type (args[i]), |
| 3453 | args[i])); |
| 3454 | |
| 3455 | /* If more arguments than parameters, add dummy entries. */ |
| 3456 | for (size_t i = min_len; i < args.size (); i++) |
| 3457 | bv.push_back (TOO_FEW_PARAMS_BADNESS); |
| 3458 | |
| 3459 | return bv; |
| 3460 | } |
| 3461 | |
| 3462 | /* Compare the names of two integer types, assuming that any sign |
| 3463 | qualifiers have been checked already. We do it this way because |
| 3464 | there may be an "int" in the name of one of the types. */ |
| 3465 | |
| 3466 | static int |
| 3467 | integer_types_same_name_p (const char *first, const char *second) |
| 3468 | { |
| 3469 | int first_p, second_p; |
| 3470 | |
| 3471 | /* If both are shorts, return 1; if neither is a short, keep |
| 3472 | checking. */ |
| 3473 | first_p = (strstr (first, "short") != NULL); |
| 3474 | second_p = (strstr (second, "short") != NULL); |
| 3475 | if (first_p && second_p) |
| 3476 | return 1; |
| 3477 | if (first_p || second_p) |
| 3478 | return 0; |
| 3479 | |
| 3480 | /* Likewise for long. */ |
| 3481 | first_p = (strstr (first, "long") != NULL); |
| 3482 | second_p = (strstr (second, "long") != NULL); |
| 3483 | if (first_p && second_p) |
| 3484 | return 1; |
| 3485 | if (first_p || second_p) |
| 3486 | return 0; |
| 3487 | |
| 3488 | /* Likewise for char. */ |
| 3489 | first_p = (strstr (first, "char") != NULL); |
| 3490 | second_p = (strstr (second, "char") != NULL); |
| 3491 | if (first_p && second_p) |
| 3492 | return 1; |
| 3493 | if (first_p || second_p) |
| 3494 | return 0; |
| 3495 | |
| 3496 | /* They must both be ints. */ |
| 3497 | return 1; |
| 3498 | } |
| 3499 | |
| 3500 | /* Compares type A to type B. Returns true if they represent the same |
| 3501 | type, false otherwise. */ |
| 3502 | |
| 3503 | bool |
| 3504 | types_equal (struct type *a, struct type *b) |
| 3505 | { |
| 3506 | /* Identical type pointers. */ |
| 3507 | /* However, this still doesn't catch all cases of same type for b |
| 3508 | and a. The reason is that builtin types are different from |
| 3509 | the same ones constructed from the object. */ |
| 3510 | if (a == b) |
| 3511 | return true; |
| 3512 | |
| 3513 | /* Resolve typedefs */ |
| 3514 | if (TYPE_CODE (a) == TYPE_CODE_TYPEDEF) |
| 3515 | a = check_typedef (a); |
| 3516 | if (TYPE_CODE (b) == TYPE_CODE_TYPEDEF) |
| 3517 | b = check_typedef (b); |
| 3518 | |
| 3519 | /* If after resolving typedefs a and b are not of the same type |
| 3520 | code then they are not equal. */ |
| 3521 | if (TYPE_CODE (a) != TYPE_CODE (b)) |
| 3522 | return false; |
| 3523 | |
| 3524 | /* If a and b are both pointers types or both reference types then |
| 3525 | they are equal of the same type iff the objects they refer to are |
| 3526 | of the same type. */ |
| 3527 | if (TYPE_CODE (a) == TYPE_CODE_PTR |
| 3528 | || TYPE_CODE (a) == TYPE_CODE_REF) |
| 3529 | return types_equal (TYPE_TARGET_TYPE (a), |
| 3530 | TYPE_TARGET_TYPE (b)); |
| 3531 | |
| 3532 | /* Well, damnit, if the names are exactly the same, I'll say they |
| 3533 | are exactly the same. This happens when we generate method |
| 3534 | stubs. The types won't point to the same address, but they |
| 3535 | really are the same. */ |
| 3536 | |
| 3537 | if (TYPE_NAME (a) && TYPE_NAME (b) |
| 3538 | && strcmp (TYPE_NAME (a), TYPE_NAME (b)) == 0) |
| 3539 | return true; |
| 3540 | |
| 3541 | /* Check if identical after resolving typedefs. */ |
| 3542 | if (a == b) |
| 3543 | return true; |
| 3544 | |
| 3545 | /* Two function types are equal if their argument and return types |
| 3546 | are equal. */ |
| 3547 | if (TYPE_CODE (a) == TYPE_CODE_FUNC) |
| 3548 | { |
| 3549 | int i; |
| 3550 | |
| 3551 | if (TYPE_NFIELDS (a) != TYPE_NFIELDS (b)) |
| 3552 | return false; |
| 3553 | |
| 3554 | if (!types_equal (TYPE_TARGET_TYPE (a), TYPE_TARGET_TYPE (b))) |
| 3555 | return false; |
| 3556 | |
| 3557 | for (i = 0; i < TYPE_NFIELDS (a); ++i) |
| 3558 | if (!types_equal (TYPE_FIELD_TYPE (a, i), TYPE_FIELD_TYPE (b, i))) |
| 3559 | return false; |
| 3560 | |
| 3561 | return true; |
| 3562 | } |
| 3563 | |
| 3564 | return false; |
| 3565 | } |
| 3566 | \f |
| 3567 | /* Deep comparison of types. */ |
| 3568 | |
| 3569 | /* An entry in the type-equality bcache. */ |
| 3570 | |
| 3571 | struct type_equality_entry |
| 3572 | { |
| 3573 | type_equality_entry (struct type *t1, struct type *t2) |
| 3574 | : type1 (t1), |
| 3575 | type2 (t2) |
| 3576 | { |
| 3577 | } |
| 3578 | |
| 3579 | struct type *type1, *type2; |
| 3580 | }; |
| 3581 | |
| 3582 | /* A helper function to compare two strings. Returns true if they are |
| 3583 | the same, false otherwise. Handles NULLs properly. */ |
| 3584 | |
| 3585 | static bool |
| 3586 | compare_maybe_null_strings (const char *s, const char *t) |
| 3587 | { |
| 3588 | if (s == NULL || t == NULL) |
| 3589 | return s == t; |
| 3590 | return strcmp (s, t) == 0; |
| 3591 | } |
| 3592 | |
| 3593 | /* A helper function for check_types_worklist that checks two types for |
| 3594 | "deep" equality. Returns true if the types are considered the |
| 3595 | same, false otherwise. */ |
| 3596 | |
| 3597 | static bool |
| 3598 | check_types_equal (struct type *type1, struct type *type2, |
| 3599 | std::vector<type_equality_entry> *worklist) |
| 3600 | { |
| 3601 | type1 = check_typedef (type1); |
| 3602 | type2 = check_typedef (type2); |
| 3603 | |
| 3604 | if (type1 == type2) |
| 3605 | return true; |
| 3606 | |
| 3607 | if (TYPE_CODE (type1) != TYPE_CODE (type2) |
| 3608 | || TYPE_LENGTH (type1) != TYPE_LENGTH (type2) |
| 3609 | || TYPE_UNSIGNED (type1) != TYPE_UNSIGNED (type2) |
| 3610 | || TYPE_NOSIGN (type1) != TYPE_NOSIGN (type2) |
| 3611 | || TYPE_VARARGS (type1) != TYPE_VARARGS (type2) |
| 3612 | || TYPE_VECTOR (type1) != TYPE_VECTOR (type2) |
| 3613 | || TYPE_NOTTEXT (type1) != TYPE_NOTTEXT (type2) |
| 3614 | || TYPE_INSTANCE_FLAGS (type1) != TYPE_INSTANCE_FLAGS (type2) |
| 3615 | || TYPE_NFIELDS (type1) != TYPE_NFIELDS (type2)) |
| 3616 | return false; |
| 3617 | |
| 3618 | if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2))) |
| 3619 | return false; |
| 3620 | if (!compare_maybe_null_strings (TYPE_NAME (type1), TYPE_NAME (type2))) |
| 3621 | return false; |
| 3622 | |
| 3623 | if (TYPE_CODE (type1) == TYPE_CODE_RANGE) |
| 3624 | { |
| 3625 | if (*TYPE_RANGE_DATA (type1) != *TYPE_RANGE_DATA (type2)) |
| 3626 | return false; |
| 3627 | } |
| 3628 | else |
| 3629 | { |
| 3630 | int i; |
| 3631 | |
| 3632 | for (i = 0; i < TYPE_NFIELDS (type1); ++i) |
| 3633 | { |
| 3634 | const struct field *field1 = &TYPE_FIELD (type1, i); |
| 3635 | const struct field *field2 = &TYPE_FIELD (type2, i); |
| 3636 | |
| 3637 | if (FIELD_ARTIFICIAL (*field1) != FIELD_ARTIFICIAL (*field2) |
| 3638 | || FIELD_BITSIZE (*field1) != FIELD_BITSIZE (*field2) |
| 3639 | || FIELD_LOC_KIND (*field1) != FIELD_LOC_KIND (*field2)) |
| 3640 | return false; |
| 3641 | if (!compare_maybe_null_strings (FIELD_NAME (*field1), |
| 3642 | FIELD_NAME (*field2))) |
| 3643 | return false; |
| 3644 | switch (FIELD_LOC_KIND (*field1)) |
| 3645 | { |
| 3646 | case FIELD_LOC_KIND_BITPOS: |
| 3647 | if (FIELD_BITPOS (*field1) != FIELD_BITPOS (*field2)) |
| 3648 | return false; |
| 3649 | break; |
| 3650 | case FIELD_LOC_KIND_ENUMVAL: |
| 3651 | if (FIELD_ENUMVAL (*field1) != FIELD_ENUMVAL (*field2)) |
| 3652 | return false; |
| 3653 | break; |
| 3654 | case FIELD_LOC_KIND_PHYSADDR: |
| 3655 | if (FIELD_STATIC_PHYSADDR (*field1) |
| 3656 | != FIELD_STATIC_PHYSADDR (*field2)) |
| 3657 | return false; |
| 3658 | break; |
| 3659 | case FIELD_LOC_KIND_PHYSNAME: |
| 3660 | if (!compare_maybe_null_strings (FIELD_STATIC_PHYSNAME (*field1), |
| 3661 | FIELD_STATIC_PHYSNAME (*field2))) |
| 3662 | return false; |
| 3663 | break; |
| 3664 | case FIELD_LOC_KIND_DWARF_BLOCK: |
| 3665 | { |
| 3666 | struct dwarf2_locexpr_baton *block1, *block2; |
| 3667 | |
| 3668 | block1 = FIELD_DWARF_BLOCK (*field1); |
| 3669 | block2 = FIELD_DWARF_BLOCK (*field2); |
| 3670 | if (block1->per_cu != block2->per_cu |
| 3671 | || block1->size != block2->size |
| 3672 | || memcmp (block1->data, block2->data, block1->size) != 0) |
| 3673 | return false; |
| 3674 | } |
| 3675 | break; |
| 3676 | default: |
| 3677 | internal_error (__FILE__, __LINE__, _("Unsupported field kind " |
| 3678 | "%d by check_types_equal"), |
| 3679 | FIELD_LOC_KIND (*field1)); |
| 3680 | } |
| 3681 | |
| 3682 | worklist->emplace_back (FIELD_TYPE (*field1), FIELD_TYPE (*field2)); |
| 3683 | } |
| 3684 | } |
| 3685 | |
| 3686 | if (TYPE_TARGET_TYPE (type1) != NULL) |
| 3687 | { |
| 3688 | if (TYPE_TARGET_TYPE (type2) == NULL) |
| 3689 | return false; |
| 3690 | |
| 3691 | worklist->emplace_back (TYPE_TARGET_TYPE (type1), |
| 3692 | TYPE_TARGET_TYPE (type2)); |
| 3693 | } |
| 3694 | else if (TYPE_TARGET_TYPE (type2) != NULL) |
| 3695 | return false; |
| 3696 | |
| 3697 | return true; |
| 3698 | } |
| 3699 | |
| 3700 | /* Check types on a worklist for equality. Returns false if any pair |
| 3701 | is not equal, true if they are all considered equal. */ |
| 3702 | |
| 3703 | static bool |
| 3704 | check_types_worklist (std::vector<type_equality_entry> *worklist, |
| 3705 | struct bcache *cache) |
| 3706 | { |
| 3707 | while (!worklist->empty ()) |
| 3708 | { |
| 3709 | int added; |
| 3710 | |
| 3711 | struct type_equality_entry entry = std::move (worklist->back ()); |
| 3712 | worklist->pop_back (); |
| 3713 | |
| 3714 | /* If the type pair has already been visited, we know it is |
| 3715 | ok. */ |
| 3716 | cache->insert (&entry, sizeof (entry), &added); |
| 3717 | if (!added) |
| 3718 | continue; |
| 3719 | |
| 3720 | if (!check_types_equal (entry.type1, entry.type2, worklist)) |
| 3721 | return false; |
| 3722 | } |
| 3723 | |
| 3724 | return true; |
| 3725 | } |
| 3726 | |
| 3727 | /* Return true if types TYPE1 and TYPE2 are equal, as determined by a |
| 3728 | "deep comparison". Otherwise return false. */ |
| 3729 | |
| 3730 | bool |
| 3731 | types_deeply_equal (struct type *type1, struct type *type2) |
| 3732 | { |
| 3733 | std::vector<type_equality_entry> worklist; |
| 3734 | |
| 3735 | gdb_assert (type1 != NULL && type2 != NULL); |
| 3736 | |
| 3737 | /* Early exit for the simple case. */ |
| 3738 | if (type1 == type2) |
| 3739 | return true; |
| 3740 | |
| 3741 | struct bcache cache (nullptr, nullptr); |
| 3742 | worklist.emplace_back (type1, type2); |
| 3743 | return check_types_worklist (&worklist, &cache); |
| 3744 | } |
| 3745 | |
| 3746 | /* Allocated status of type TYPE. Return zero if type TYPE is allocated. |
| 3747 | Otherwise return one. */ |
| 3748 | |
| 3749 | int |
| 3750 | type_not_allocated (const struct type *type) |
| 3751 | { |
| 3752 | struct dynamic_prop *prop = TYPE_ALLOCATED_PROP (type); |
| 3753 | |
| 3754 | return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST |
| 3755 | && !TYPE_DYN_PROP_ADDR (prop)); |
| 3756 | } |
| 3757 | |
| 3758 | /* Associated status of type TYPE. Return zero if type TYPE is associated. |
| 3759 | Otherwise return one. */ |
| 3760 | |
| 3761 | int |
| 3762 | type_not_associated (const struct type *type) |
| 3763 | { |
| 3764 | struct dynamic_prop *prop = TYPE_ASSOCIATED_PROP (type); |
| 3765 | |
| 3766 | return (prop && TYPE_DYN_PROP_KIND (prop) == PROP_CONST |
| 3767 | && !TYPE_DYN_PROP_ADDR (prop)); |
| 3768 | } |
| 3769 | |
| 3770 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_PTR. */ |
| 3771 | |
| 3772 | static struct rank |
| 3773 | rank_one_type_parm_ptr (struct type *parm, struct type *arg, struct value *value) |
| 3774 | { |
| 3775 | struct rank rank = {0,0}; |
| 3776 | |
| 3777 | switch (TYPE_CODE (arg)) |
| 3778 | { |
| 3779 | case TYPE_CODE_PTR: |
| 3780 | |
| 3781 | /* Allowed pointer conversions are: |
| 3782 | (a) pointer to void-pointer conversion. */ |
| 3783 | if (TYPE_CODE (TYPE_TARGET_TYPE (parm)) == TYPE_CODE_VOID) |
| 3784 | return VOID_PTR_CONVERSION_BADNESS; |
| 3785 | |
| 3786 | /* (b) pointer to ancestor-pointer conversion. */ |
| 3787 | rank.subrank = distance_to_ancestor (TYPE_TARGET_TYPE (parm), |
| 3788 | TYPE_TARGET_TYPE (arg), |
| 3789 | 0); |
| 3790 | if (rank.subrank >= 0) |
| 3791 | return sum_ranks (BASE_PTR_CONVERSION_BADNESS, rank); |
| 3792 | |
| 3793 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3794 | case TYPE_CODE_ARRAY: |
| 3795 | { |
| 3796 | struct type *t1 = TYPE_TARGET_TYPE (parm); |
| 3797 | struct type *t2 = TYPE_TARGET_TYPE (arg); |
| 3798 | |
| 3799 | if (types_equal (t1, t2)) |
| 3800 | { |
| 3801 | /* Make sure they are CV equal. */ |
| 3802 | if (TYPE_CONST (t1) != TYPE_CONST (t2)) |
| 3803 | rank.subrank |= CV_CONVERSION_CONST; |
| 3804 | if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2)) |
| 3805 | rank.subrank |= CV_CONVERSION_VOLATILE; |
| 3806 | if (rank.subrank != 0) |
| 3807 | return sum_ranks (CV_CONVERSION_BADNESS, rank); |
| 3808 | return EXACT_MATCH_BADNESS; |
| 3809 | } |
| 3810 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3811 | } |
| 3812 | case TYPE_CODE_FUNC: |
| 3813 | return rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL); |
| 3814 | case TYPE_CODE_INT: |
| 3815 | if (value != NULL && TYPE_CODE (value_type (value)) == TYPE_CODE_INT) |
| 3816 | { |
| 3817 | if (value_as_long (value) == 0) |
| 3818 | { |
| 3819 | /* Null pointer conversion: allow it to be cast to a pointer. |
| 3820 | [4.10.1 of C++ standard draft n3290] */ |
| 3821 | return NULL_POINTER_CONVERSION_BADNESS; |
| 3822 | } |
| 3823 | else |
| 3824 | { |
| 3825 | /* If type checking is disabled, allow the conversion. */ |
| 3826 | if (!strict_type_checking) |
| 3827 | return NS_INTEGER_POINTER_CONVERSION_BADNESS; |
| 3828 | } |
| 3829 | } |
| 3830 | /* fall through */ |
| 3831 | case TYPE_CODE_ENUM: |
| 3832 | case TYPE_CODE_FLAGS: |
| 3833 | case TYPE_CODE_CHAR: |
| 3834 | case TYPE_CODE_RANGE: |
| 3835 | case TYPE_CODE_BOOL: |
| 3836 | default: |
| 3837 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3838 | } |
| 3839 | } |
| 3840 | |
| 3841 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_ARRAY. */ |
| 3842 | |
| 3843 | static struct rank |
| 3844 | rank_one_type_parm_array (struct type *parm, struct type *arg, struct value *value) |
| 3845 | { |
| 3846 | switch (TYPE_CODE (arg)) |
| 3847 | { |
| 3848 | case TYPE_CODE_PTR: |
| 3849 | case TYPE_CODE_ARRAY: |
| 3850 | return rank_one_type (TYPE_TARGET_TYPE (parm), |
| 3851 | TYPE_TARGET_TYPE (arg), NULL); |
| 3852 | default: |
| 3853 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3854 | } |
| 3855 | } |
| 3856 | |
| 3857 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_FUNC. */ |
| 3858 | |
| 3859 | static struct rank |
| 3860 | rank_one_type_parm_func (struct type *parm, struct type *arg, struct value *value) |
| 3861 | { |
| 3862 | switch (TYPE_CODE (arg)) |
| 3863 | { |
| 3864 | case TYPE_CODE_PTR: /* funcptr -> func */ |
| 3865 | return rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL); |
| 3866 | default: |
| 3867 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3868 | } |
| 3869 | } |
| 3870 | |
| 3871 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_INT. */ |
| 3872 | |
| 3873 | static struct rank |
| 3874 | rank_one_type_parm_int (struct type *parm, struct type *arg, struct value *value) |
| 3875 | { |
| 3876 | switch (TYPE_CODE (arg)) |
| 3877 | { |
| 3878 | case TYPE_CODE_INT: |
| 3879 | if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) |
| 3880 | { |
| 3881 | /* Deal with signed, unsigned, and plain chars and |
| 3882 | signed and unsigned ints. */ |
| 3883 | if (TYPE_NOSIGN (parm)) |
| 3884 | { |
| 3885 | /* This case only for character types. */ |
| 3886 | if (TYPE_NOSIGN (arg)) |
| 3887 | return EXACT_MATCH_BADNESS; /* plain char -> plain char */ |
| 3888 | else /* signed/unsigned char -> plain char */ |
| 3889 | return INTEGER_CONVERSION_BADNESS; |
| 3890 | } |
| 3891 | else if (TYPE_UNSIGNED (parm)) |
| 3892 | { |
| 3893 | if (TYPE_UNSIGNED (arg)) |
| 3894 | { |
| 3895 | /* unsigned int -> unsigned int, or |
| 3896 | unsigned long -> unsigned long */ |
| 3897 | if (integer_types_same_name_p (TYPE_NAME (parm), |
| 3898 | TYPE_NAME (arg))) |
| 3899 | return EXACT_MATCH_BADNESS; |
| 3900 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
| 3901 | "int") |
| 3902 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 3903 | "long")) |
| 3904 | /* unsigned int -> unsigned long */ |
| 3905 | return INTEGER_PROMOTION_BADNESS; |
| 3906 | else |
| 3907 | /* unsigned long -> unsigned int */ |
| 3908 | return INTEGER_CONVERSION_BADNESS; |
| 3909 | } |
| 3910 | else |
| 3911 | { |
| 3912 | if (integer_types_same_name_p (TYPE_NAME (arg), |
| 3913 | "long") |
| 3914 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 3915 | "int")) |
| 3916 | /* signed long -> unsigned int */ |
| 3917 | return INTEGER_CONVERSION_BADNESS; |
| 3918 | else |
| 3919 | /* signed int/long -> unsigned int/long */ |
| 3920 | return INTEGER_CONVERSION_BADNESS; |
| 3921 | } |
| 3922 | } |
| 3923 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) |
| 3924 | { |
| 3925 | if (integer_types_same_name_p (TYPE_NAME (parm), |
| 3926 | TYPE_NAME (arg))) |
| 3927 | return EXACT_MATCH_BADNESS; |
| 3928 | else if (integer_types_same_name_p (TYPE_NAME (arg), |
| 3929 | "int") |
| 3930 | && integer_types_same_name_p (TYPE_NAME (parm), |
| 3931 | "long")) |
| 3932 | return INTEGER_PROMOTION_BADNESS; |
| 3933 | else |
| 3934 | return INTEGER_CONVERSION_BADNESS; |
| 3935 | } |
| 3936 | else |
| 3937 | return INTEGER_CONVERSION_BADNESS; |
| 3938 | } |
| 3939 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 3940 | return INTEGER_PROMOTION_BADNESS; |
| 3941 | else |
| 3942 | return INTEGER_CONVERSION_BADNESS; |
| 3943 | case TYPE_CODE_ENUM: |
| 3944 | case TYPE_CODE_FLAGS: |
| 3945 | case TYPE_CODE_CHAR: |
| 3946 | case TYPE_CODE_RANGE: |
| 3947 | case TYPE_CODE_BOOL: |
| 3948 | if (TYPE_DECLARED_CLASS (arg)) |
| 3949 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3950 | return INTEGER_PROMOTION_BADNESS; |
| 3951 | case TYPE_CODE_FLT: |
| 3952 | return INT_FLOAT_CONVERSION_BADNESS; |
| 3953 | case TYPE_CODE_PTR: |
| 3954 | return NS_POINTER_CONVERSION_BADNESS; |
| 3955 | default: |
| 3956 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3957 | } |
| 3958 | } |
| 3959 | |
| 3960 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_ENUM. */ |
| 3961 | |
| 3962 | static struct rank |
| 3963 | rank_one_type_parm_enum (struct type *parm, struct type *arg, struct value *value) |
| 3964 | { |
| 3965 | switch (TYPE_CODE (arg)) |
| 3966 | { |
| 3967 | case TYPE_CODE_INT: |
| 3968 | case TYPE_CODE_CHAR: |
| 3969 | case TYPE_CODE_RANGE: |
| 3970 | case TYPE_CODE_BOOL: |
| 3971 | case TYPE_CODE_ENUM: |
| 3972 | if (TYPE_DECLARED_CLASS (parm) || TYPE_DECLARED_CLASS (arg)) |
| 3973 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3974 | return INTEGER_CONVERSION_BADNESS; |
| 3975 | case TYPE_CODE_FLT: |
| 3976 | return INT_FLOAT_CONVERSION_BADNESS; |
| 3977 | default: |
| 3978 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3979 | } |
| 3980 | } |
| 3981 | |
| 3982 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_CHAR. */ |
| 3983 | |
| 3984 | static struct rank |
| 3985 | rank_one_type_parm_char (struct type *parm, struct type *arg, struct value *value) |
| 3986 | { |
| 3987 | switch (TYPE_CODE (arg)) |
| 3988 | { |
| 3989 | case TYPE_CODE_RANGE: |
| 3990 | case TYPE_CODE_BOOL: |
| 3991 | case TYPE_CODE_ENUM: |
| 3992 | if (TYPE_DECLARED_CLASS (arg)) |
| 3993 | return INCOMPATIBLE_TYPE_BADNESS; |
| 3994 | return INTEGER_CONVERSION_BADNESS; |
| 3995 | case TYPE_CODE_FLT: |
| 3996 | return INT_FLOAT_CONVERSION_BADNESS; |
| 3997 | case TYPE_CODE_INT: |
| 3998 | if (TYPE_LENGTH (arg) > TYPE_LENGTH (parm)) |
| 3999 | return INTEGER_CONVERSION_BADNESS; |
| 4000 | else if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 4001 | return INTEGER_PROMOTION_BADNESS; |
| 4002 | /* fall through */ |
| 4003 | case TYPE_CODE_CHAR: |
| 4004 | /* Deal with signed, unsigned, and plain chars for C++ and |
| 4005 | with int cases falling through from previous case. */ |
| 4006 | if (TYPE_NOSIGN (parm)) |
| 4007 | { |
| 4008 | if (TYPE_NOSIGN (arg)) |
| 4009 | return EXACT_MATCH_BADNESS; |
| 4010 | else |
| 4011 | return INTEGER_CONVERSION_BADNESS; |
| 4012 | } |
| 4013 | else if (TYPE_UNSIGNED (parm)) |
| 4014 | { |
| 4015 | if (TYPE_UNSIGNED (arg)) |
| 4016 | return EXACT_MATCH_BADNESS; |
| 4017 | else |
| 4018 | return INTEGER_PROMOTION_BADNESS; |
| 4019 | } |
| 4020 | else if (!TYPE_NOSIGN (arg) && !TYPE_UNSIGNED (arg)) |
| 4021 | return EXACT_MATCH_BADNESS; |
| 4022 | else |
| 4023 | return INTEGER_CONVERSION_BADNESS; |
| 4024 | default: |
| 4025 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4026 | } |
| 4027 | } |
| 4028 | |
| 4029 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_RANGE. */ |
| 4030 | |
| 4031 | static struct rank |
| 4032 | rank_one_type_parm_range (struct type *parm, struct type *arg, struct value *value) |
| 4033 | { |
| 4034 | switch (TYPE_CODE (arg)) |
| 4035 | { |
| 4036 | case TYPE_CODE_INT: |
| 4037 | case TYPE_CODE_CHAR: |
| 4038 | case TYPE_CODE_RANGE: |
| 4039 | case TYPE_CODE_BOOL: |
| 4040 | case TYPE_CODE_ENUM: |
| 4041 | return INTEGER_CONVERSION_BADNESS; |
| 4042 | case TYPE_CODE_FLT: |
| 4043 | return INT_FLOAT_CONVERSION_BADNESS; |
| 4044 | default: |
| 4045 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4046 | } |
| 4047 | } |
| 4048 | |
| 4049 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_BOOL. */ |
| 4050 | |
| 4051 | static struct rank |
| 4052 | rank_one_type_parm_bool (struct type *parm, struct type *arg, struct value *value) |
| 4053 | { |
| 4054 | switch (TYPE_CODE (arg)) |
| 4055 | { |
| 4056 | /* n3290 draft, section 4.12.1 (conv.bool): |
| 4057 | |
| 4058 | "A prvalue of arithmetic, unscoped enumeration, pointer, or |
| 4059 | pointer to member type can be converted to a prvalue of type |
| 4060 | bool. A zero value, null pointer value, or null member pointer |
| 4061 | value is converted to false; any other value is converted to |
| 4062 | true. A prvalue of type std::nullptr_t can be converted to a |
| 4063 | prvalue of type bool; the resulting value is false." */ |
| 4064 | case TYPE_CODE_INT: |
| 4065 | case TYPE_CODE_CHAR: |
| 4066 | case TYPE_CODE_ENUM: |
| 4067 | case TYPE_CODE_FLT: |
| 4068 | case TYPE_CODE_MEMBERPTR: |
| 4069 | case TYPE_CODE_PTR: |
| 4070 | return BOOL_CONVERSION_BADNESS; |
| 4071 | case TYPE_CODE_RANGE: |
| 4072 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4073 | case TYPE_CODE_BOOL: |
| 4074 | return EXACT_MATCH_BADNESS; |
| 4075 | default: |
| 4076 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4077 | } |
| 4078 | } |
| 4079 | |
| 4080 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_FLOAT. */ |
| 4081 | |
| 4082 | static struct rank |
| 4083 | rank_one_type_parm_float (struct type *parm, struct type *arg, struct value *value) |
| 4084 | { |
| 4085 | switch (TYPE_CODE (arg)) |
| 4086 | { |
| 4087 | case TYPE_CODE_FLT: |
| 4088 | if (TYPE_LENGTH (arg) < TYPE_LENGTH (parm)) |
| 4089 | return FLOAT_PROMOTION_BADNESS; |
| 4090 | else if (TYPE_LENGTH (arg) == TYPE_LENGTH (parm)) |
| 4091 | return EXACT_MATCH_BADNESS; |
| 4092 | else |
| 4093 | return FLOAT_CONVERSION_BADNESS; |
| 4094 | case TYPE_CODE_INT: |
| 4095 | case TYPE_CODE_BOOL: |
| 4096 | case TYPE_CODE_ENUM: |
| 4097 | case TYPE_CODE_RANGE: |
| 4098 | case TYPE_CODE_CHAR: |
| 4099 | return INT_FLOAT_CONVERSION_BADNESS; |
| 4100 | default: |
| 4101 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4102 | } |
| 4103 | } |
| 4104 | |
| 4105 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_COMPLEX. */ |
| 4106 | |
| 4107 | static struct rank |
| 4108 | rank_one_type_parm_complex (struct type *parm, struct type *arg, struct value *value) |
| 4109 | { |
| 4110 | switch (TYPE_CODE (arg)) |
| 4111 | { /* Strictly not needed for C++, but... */ |
| 4112 | case TYPE_CODE_FLT: |
| 4113 | return FLOAT_PROMOTION_BADNESS; |
| 4114 | case TYPE_CODE_COMPLEX: |
| 4115 | return EXACT_MATCH_BADNESS; |
| 4116 | default: |
| 4117 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4118 | } |
| 4119 | } |
| 4120 | |
| 4121 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_STRUCT. */ |
| 4122 | |
| 4123 | static struct rank |
| 4124 | rank_one_type_parm_struct (struct type *parm, struct type *arg, struct value *value) |
| 4125 | { |
| 4126 | struct rank rank = {0, 0}; |
| 4127 | |
| 4128 | switch (TYPE_CODE (arg)) |
| 4129 | { |
| 4130 | case TYPE_CODE_STRUCT: |
| 4131 | /* Check for derivation */ |
| 4132 | rank.subrank = distance_to_ancestor (parm, arg, 0); |
| 4133 | if (rank.subrank >= 0) |
| 4134 | return sum_ranks (BASE_CONVERSION_BADNESS, rank); |
| 4135 | /* fall through */ |
| 4136 | default: |
| 4137 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4138 | } |
| 4139 | } |
| 4140 | |
| 4141 | /* rank_one_type helper for when PARM's type code is TYPE_CODE_SET. */ |
| 4142 | |
| 4143 | static struct rank |
| 4144 | rank_one_type_parm_set (struct type *parm, struct type *arg, struct value *value) |
| 4145 | { |
| 4146 | switch (TYPE_CODE (arg)) |
| 4147 | { |
| 4148 | /* Not in C++ */ |
| 4149 | case TYPE_CODE_SET: |
| 4150 | return rank_one_type (TYPE_FIELD_TYPE (parm, 0), |
| 4151 | TYPE_FIELD_TYPE (arg, 0), NULL); |
| 4152 | default: |
| 4153 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4154 | } |
| 4155 | } |
| 4156 | |
| 4157 | /* Compare one type (PARM) for compatibility with another (ARG). |
| 4158 | * PARM is intended to be the parameter type of a function; and |
| 4159 | * ARG is the supplied argument's type. This function tests if |
| 4160 | * the latter can be converted to the former. |
| 4161 | * VALUE is the argument's value or NULL if none (or called recursively) |
| 4162 | * |
| 4163 | * Return 0 if they are identical types; |
| 4164 | * Otherwise, return an integer which corresponds to how compatible |
| 4165 | * PARM is to ARG. The higher the return value, the worse the match. |
| 4166 | * Generally the "bad" conversions are all uniformly assigned a 100. */ |
| 4167 | |
| 4168 | struct rank |
| 4169 | rank_one_type (struct type *parm, struct type *arg, struct value *value) |
| 4170 | { |
| 4171 | struct rank rank = {0,0}; |
| 4172 | |
| 4173 | /* Resolve typedefs */ |
| 4174 | if (TYPE_CODE (parm) == TYPE_CODE_TYPEDEF) |
| 4175 | parm = check_typedef (parm); |
| 4176 | if (TYPE_CODE (arg) == TYPE_CODE_TYPEDEF) |
| 4177 | arg = check_typedef (arg); |
| 4178 | |
| 4179 | if (TYPE_IS_REFERENCE (parm) && value != NULL) |
| 4180 | { |
| 4181 | if (VALUE_LVAL (value) == not_lval) |
| 4182 | { |
| 4183 | /* Rvalues should preferably bind to rvalue references or const |
| 4184 | lvalue references. */ |
| 4185 | if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF) |
| 4186 | rank.subrank = REFERENCE_CONVERSION_RVALUE; |
| 4187 | else if (TYPE_CONST (TYPE_TARGET_TYPE (parm))) |
| 4188 | rank.subrank = REFERENCE_CONVERSION_CONST_LVALUE; |
| 4189 | else |
| 4190 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4191 | return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS); |
| 4192 | } |
| 4193 | else |
| 4194 | { |
| 4195 | /* Lvalues should prefer lvalue overloads. */ |
| 4196 | if (TYPE_CODE (parm) == TYPE_CODE_RVALUE_REF) |
| 4197 | { |
| 4198 | rank.subrank = REFERENCE_CONVERSION_RVALUE; |
| 4199 | return sum_ranks (rank, REFERENCE_CONVERSION_BADNESS); |
| 4200 | } |
| 4201 | } |
| 4202 | } |
| 4203 | |
| 4204 | if (types_equal (parm, arg)) |
| 4205 | { |
| 4206 | struct type *t1 = parm; |
| 4207 | struct type *t2 = arg; |
| 4208 | |
| 4209 | /* For pointers and references, compare target type. */ |
| 4210 | if (TYPE_CODE (parm) == TYPE_CODE_PTR || TYPE_IS_REFERENCE (parm)) |
| 4211 | { |
| 4212 | t1 = TYPE_TARGET_TYPE (parm); |
| 4213 | t2 = TYPE_TARGET_TYPE (arg); |
| 4214 | } |
| 4215 | |
| 4216 | /* Make sure they are CV equal, too. */ |
| 4217 | if (TYPE_CONST (t1) != TYPE_CONST (t2)) |
| 4218 | rank.subrank |= CV_CONVERSION_CONST; |
| 4219 | if (TYPE_VOLATILE (t1) != TYPE_VOLATILE (t2)) |
| 4220 | rank.subrank |= CV_CONVERSION_VOLATILE; |
| 4221 | if (rank.subrank != 0) |
| 4222 | return sum_ranks (CV_CONVERSION_BADNESS, rank); |
| 4223 | return EXACT_MATCH_BADNESS; |
| 4224 | } |
| 4225 | |
| 4226 | /* See through references, since we can almost make non-references |
| 4227 | references. */ |
| 4228 | |
| 4229 | if (TYPE_IS_REFERENCE (arg)) |
| 4230 | return (sum_ranks (rank_one_type (parm, TYPE_TARGET_TYPE (arg), NULL), |
| 4231 | REFERENCE_CONVERSION_BADNESS)); |
| 4232 | if (TYPE_IS_REFERENCE (parm)) |
| 4233 | return (sum_ranks (rank_one_type (TYPE_TARGET_TYPE (parm), arg, NULL), |
| 4234 | REFERENCE_CONVERSION_BADNESS)); |
| 4235 | if (overload_debug) |
| 4236 | /* Debugging only. */ |
| 4237 | fprintf_filtered (gdb_stderr, |
| 4238 | "------ Arg is %s [%d], parm is %s [%d]\n", |
| 4239 | TYPE_NAME (arg), TYPE_CODE (arg), |
| 4240 | TYPE_NAME (parm), TYPE_CODE (parm)); |
| 4241 | |
| 4242 | /* x -> y means arg of type x being supplied for parameter of type y. */ |
| 4243 | |
| 4244 | switch (TYPE_CODE (parm)) |
| 4245 | { |
| 4246 | case TYPE_CODE_PTR: |
| 4247 | return rank_one_type_parm_ptr (parm, arg, value); |
| 4248 | case TYPE_CODE_ARRAY: |
| 4249 | return rank_one_type_parm_array (parm, arg, value); |
| 4250 | case TYPE_CODE_FUNC: |
| 4251 | return rank_one_type_parm_func (parm, arg, value); |
| 4252 | case TYPE_CODE_INT: |
| 4253 | return rank_one_type_parm_int (parm, arg, value); |
| 4254 | case TYPE_CODE_ENUM: |
| 4255 | return rank_one_type_parm_enum (parm, arg, value); |
| 4256 | case TYPE_CODE_CHAR: |
| 4257 | return rank_one_type_parm_char (parm, arg, value); |
| 4258 | case TYPE_CODE_RANGE: |
| 4259 | return rank_one_type_parm_range (parm, arg, value); |
| 4260 | case TYPE_CODE_BOOL: |
| 4261 | return rank_one_type_parm_bool (parm, arg, value); |
| 4262 | case TYPE_CODE_FLT: |
| 4263 | return rank_one_type_parm_float (parm, arg, value); |
| 4264 | case TYPE_CODE_COMPLEX: |
| 4265 | return rank_one_type_parm_complex (parm, arg, value); |
| 4266 | case TYPE_CODE_STRUCT: |
| 4267 | return rank_one_type_parm_struct (parm, arg, value); |
| 4268 | case TYPE_CODE_SET: |
| 4269 | return rank_one_type_parm_set (parm, arg, value); |
| 4270 | default: |
| 4271 | return INCOMPATIBLE_TYPE_BADNESS; |
| 4272 | } /* switch (TYPE_CODE (arg)) */ |
| 4273 | } |
| 4274 | |
| 4275 | /* End of functions for overload resolution. */ |
| 4276 | \f |
| 4277 | /* Routines to pretty-print types. */ |
| 4278 | |
| 4279 | static void |
| 4280 | print_bit_vector (B_TYPE *bits, int nbits) |
| 4281 | { |
| 4282 | int bitno; |
| 4283 | |
| 4284 | for (bitno = 0; bitno < nbits; bitno++) |
| 4285 | { |
| 4286 | if ((bitno % 8) == 0) |
| 4287 | { |
| 4288 | puts_filtered (" "); |
| 4289 | } |
| 4290 | if (B_TST (bits, bitno)) |
| 4291 | printf_filtered (("1")); |
| 4292 | else |
| 4293 | printf_filtered (("0")); |
| 4294 | } |
| 4295 | } |
| 4296 | |
| 4297 | /* Note the first arg should be the "this" pointer, we may not want to |
| 4298 | include it since we may get into a infinitely recursive |
| 4299 | situation. */ |
| 4300 | |
| 4301 | static void |
| 4302 | print_args (struct field *args, int nargs, int spaces) |
| 4303 | { |
| 4304 | if (args != NULL) |
| 4305 | { |
| 4306 | int i; |
| 4307 | |
| 4308 | for (i = 0; i < nargs; i++) |
| 4309 | { |
| 4310 | printfi_filtered (spaces, "[%d] name '%s'\n", i, |
| 4311 | args[i].name != NULL ? args[i].name : "<NULL>"); |
| 4312 | recursive_dump_type (args[i].type, spaces + 2); |
| 4313 | } |
| 4314 | } |
| 4315 | } |
| 4316 | |
| 4317 | int |
| 4318 | field_is_static (struct field *f) |
| 4319 | { |
| 4320 | /* "static" fields are the fields whose location is not relative |
| 4321 | to the address of the enclosing struct. It would be nice to |
| 4322 | have a dedicated flag that would be set for static fields when |
| 4323 | the type is being created. But in practice, checking the field |
| 4324 | loc_kind should give us an accurate answer. */ |
| 4325 | return (FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSNAME |
| 4326 | || FIELD_LOC_KIND (*f) == FIELD_LOC_KIND_PHYSADDR); |
| 4327 | } |
| 4328 | |
| 4329 | static void |
| 4330 | dump_fn_fieldlists (struct type *type, int spaces) |
| 4331 | { |
| 4332 | int method_idx; |
| 4333 | int overload_idx; |
| 4334 | struct fn_field *f; |
| 4335 | |
| 4336 | printfi_filtered (spaces, "fn_fieldlists "); |
| 4337 | gdb_print_host_address (TYPE_FN_FIELDLISTS (type), gdb_stdout); |
| 4338 | printf_filtered ("\n"); |
| 4339 | for (method_idx = 0; method_idx < TYPE_NFN_FIELDS (type); method_idx++) |
| 4340 | { |
| 4341 | f = TYPE_FN_FIELDLIST1 (type, method_idx); |
| 4342 | printfi_filtered (spaces + 2, "[%d] name '%s' (", |
| 4343 | method_idx, |
| 4344 | TYPE_FN_FIELDLIST_NAME (type, method_idx)); |
| 4345 | gdb_print_host_address (TYPE_FN_FIELDLIST_NAME (type, method_idx), |
| 4346 | gdb_stdout); |
| 4347 | printf_filtered (_(") length %d\n"), |
| 4348 | TYPE_FN_FIELDLIST_LENGTH (type, method_idx)); |
| 4349 | for (overload_idx = 0; |
| 4350 | overload_idx < TYPE_FN_FIELDLIST_LENGTH (type, method_idx); |
| 4351 | overload_idx++) |
| 4352 | { |
| 4353 | printfi_filtered (spaces + 4, "[%d] physname '%s' (", |
| 4354 | overload_idx, |
| 4355 | TYPE_FN_FIELD_PHYSNAME (f, overload_idx)); |
| 4356 | gdb_print_host_address (TYPE_FN_FIELD_PHYSNAME (f, overload_idx), |
| 4357 | gdb_stdout); |
| 4358 | printf_filtered (")\n"); |
| 4359 | printfi_filtered (spaces + 8, "type "); |
| 4360 | gdb_print_host_address (TYPE_FN_FIELD_TYPE (f, overload_idx), |
| 4361 | gdb_stdout); |
| 4362 | printf_filtered ("\n"); |
| 4363 | |
| 4364 | recursive_dump_type (TYPE_FN_FIELD_TYPE (f, overload_idx), |
| 4365 | spaces + 8 + 2); |
| 4366 | |
| 4367 | printfi_filtered (spaces + 8, "args "); |
| 4368 | gdb_print_host_address (TYPE_FN_FIELD_ARGS (f, overload_idx), |
| 4369 | gdb_stdout); |
| 4370 | printf_filtered ("\n"); |
| 4371 | print_args (TYPE_FN_FIELD_ARGS (f, overload_idx), |
| 4372 | TYPE_NFIELDS (TYPE_FN_FIELD_TYPE (f, overload_idx)), |
| 4373 | spaces + 8 + 2); |
| 4374 | printfi_filtered (spaces + 8, "fcontext "); |
| 4375 | gdb_print_host_address (TYPE_FN_FIELD_FCONTEXT (f, overload_idx), |
| 4376 | gdb_stdout); |
| 4377 | printf_filtered ("\n"); |
| 4378 | |
| 4379 | printfi_filtered (spaces + 8, "is_const %d\n", |
| 4380 | TYPE_FN_FIELD_CONST (f, overload_idx)); |
| 4381 | printfi_filtered (spaces + 8, "is_volatile %d\n", |
| 4382 | TYPE_FN_FIELD_VOLATILE (f, overload_idx)); |
| 4383 | printfi_filtered (spaces + 8, "is_private %d\n", |
| 4384 | TYPE_FN_FIELD_PRIVATE (f, overload_idx)); |
| 4385 | printfi_filtered (spaces + 8, "is_protected %d\n", |
| 4386 | TYPE_FN_FIELD_PROTECTED (f, overload_idx)); |
| 4387 | printfi_filtered (spaces + 8, "is_stub %d\n", |
| 4388 | TYPE_FN_FIELD_STUB (f, overload_idx)); |
| 4389 | printfi_filtered (spaces + 8, "voffset %u\n", |
| 4390 | TYPE_FN_FIELD_VOFFSET (f, overload_idx)); |
| 4391 | } |
| 4392 | } |
| 4393 | } |
| 4394 | |
| 4395 | static void |
| 4396 | print_cplus_stuff (struct type *type, int spaces) |
| 4397 | { |
| 4398 | printfi_filtered (spaces, "vptr_fieldno %d\n", TYPE_VPTR_FIELDNO (type)); |
| 4399 | printfi_filtered (spaces, "vptr_basetype "); |
| 4400 | gdb_print_host_address (TYPE_VPTR_BASETYPE (type), gdb_stdout); |
| 4401 | puts_filtered ("\n"); |
| 4402 | if (TYPE_VPTR_BASETYPE (type) != NULL) |
| 4403 | recursive_dump_type (TYPE_VPTR_BASETYPE (type), spaces + 2); |
| 4404 | |
| 4405 | printfi_filtered (spaces, "n_baseclasses %d\n", |
| 4406 | TYPE_N_BASECLASSES (type)); |
| 4407 | printfi_filtered (spaces, "nfn_fields %d\n", |
| 4408 | TYPE_NFN_FIELDS (type)); |
| 4409 | if (TYPE_N_BASECLASSES (type) > 0) |
| 4410 | { |
| 4411 | printfi_filtered (spaces, "virtual_field_bits (%d bits at *", |
| 4412 | TYPE_N_BASECLASSES (type)); |
| 4413 | gdb_print_host_address (TYPE_FIELD_VIRTUAL_BITS (type), |
| 4414 | gdb_stdout); |
| 4415 | printf_filtered (")"); |
| 4416 | |
| 4417 | print_bit_vector (TYPE_FIELD_VIRTUAL_BITS (type), |
| 4418 | TYPE_N_BASECLASSES (type)); |
| 4419 | puts_filtered ("\n"); |
| 4420 | } |
| 4421 | if (TYPE_NFIELDS (type) > 0) |
| 4422 | { |
| 4423 | if (TYPE_FIELD_PRIVATE_BITS (type) != NULL) |
| 4424 | { |
| 4425 | printfi_filtered (spaces, |
| 4426 | "private_field_bits (%d bits at *", |
| 4427 | TYPE_NFIELDS (type)); |
| 4428 | gdb_print_host_address (TYPE_FIELD_PRIVATE_BITS (type), |
| 4429 | gdb_stdout); |
| 4430 | printf_filtered (")"); |
| 4431 | print_bit_vector (TYPE_FIELD_PRIVATE_BITS (type), |
| 4432 | TYPE_NFIELDS (type)); |
| 4433 | puts_filtered ("\n"); |
| 4434 | } |
| 4435 | if (TYPE_FIELD_PROTECTED_BITS (type) != NULL) |
| 4436 | { |
| 4437 | printfi_filtered (spaces, |
| 4438 | "protected_field_bits (%d bits at *", |
| 4439 | TYPE_NFIELDS (type)); |
| 4440 | gdb_print_host_address (TYPE_FIELD_PROTECTED_BITS (type), |
| 4441 | gdb_stdout); |
| 4442 | printf_filtered (")"); |
| 4443 | print_bit_vector (TYPE_FIELD_PROTECTED_BITS (type), |
| 4444 | TYPE_NFIELDS (type)); |
| 4445 | puts_filtered ("\n"); |
| 4446 | } |
| 4447 | } |
| 4448 | if (TYPE_NFN_FIELDS (type) > 0) |
| 4449 | { |
| 4450 | dump_fn_fieldlists (type, spaces); |
| 4451 | } |
| 4452 | } |
| 4453 | |
| 4454 | /* Print the contents of the TYPE's type_specific union, assuming that |
| 4455 | its type-specific kind is TYPE_SPECIFIC_GNAT_STUFF. */ |
| 4456 | |
| 4457 | static void |
| 4458 | print_gnat_stuff (struct type *type, int spaces) |
| 4459 | { |
| 4460 | struct type *descriptive_type = TYPE_DESCRIPTIVE_TYPE (type); |
| 4461 | |
| 4462 | if (descriptive_type == NULL) |
| 4463 | printfi_filtered (spaces + 2, "no descriptive type\n"); |
| 4464 | else |
| 4465 | { |
| 4466 | printfi_filtered (spaces + 2, "descriptive type\n"); |
| 4467 | recursive_dump_type (descriptive_type, spaces + 4); |
| 4468 | } |
| 4469 | } |
| 4470 | |
| 4471 | static struct obstack dont_print_type_obstack; |
| 4472 | |
| 4473 | void |
| 4474 | recursive_dump_type (struct type *type, int spaces) |
| 4475 | { |
| 4476 | int idx; |
| 4477 | |
| 4478 | if (spaces == 0) |
| 4479 | obstack_begin (&dont_print_type_obstack, 0); |
| 4480 | |
| 4481 | if (TYPE_NFIELDS (type) > 0 |
| 4482 | || (HAVE_CPLUS_STRUCT (type) && TYPE_NFN_FIELDS (type) > 0)) |
| 4483 | { |
| 4484 | struct type **first_dont_print |
| 4485 | = (struct type **) obstack_base (&dont_print_type_obstack); |
| 4486 | |
| 4487 | int i = (struct type **) |
| 4488 | obstack_next_free (&dont_print_type_obstack) - first_dont_print; |
| 4489 | |
| 4490 | while (--i >= 0) |
| 4491 | { |
| 4492 | if (type == first_dont_print[i]) |
| 4493 | { |
| 4494 | printfi_filtered (spaces, "type node "); |
| 4495 | gdb_print_host_address (type, gdb_stdout); |
| 4496 | printf_filtered (_(" <same as already seen type>\n")); |
| 4497 | return; |
| 4498 | } |
| 4499 | } |
| 4500 | |
| 4501 | obstack_ptr_grow (&dont_print_type_obstack, type); |
| 4502 | } |
| 4503 | |
| 4504 | printfi_filtered (spaces, "type node "); |
| 4505 | gdb_print_host_address (type, gdb_stdout); |
| 4506 | printf_filtered ("\n"); |
| 4507 | printfi_filtered (spaces, "name '%s' (", |
| 4508 | TYPE_NAME (type) ? TYPE_NAME (type) : "<NULL>"); |
| 4509 | gdb_print_host_address (TYPE_NAME (type), gdb_stdout); |
| 4510 | printf_filtered (")\n"); |
| 4511 | printfi_filtered (spaces, "code 0x%x ", TYPE_CODE (type)); |
| 4512 | switch (TYPE_CODE (type)) |
| 4513 | { |
| 4514 | case TYPE_CODE_UNDEF: |
| 4515 | printf_filtered ("(TYPE_CODE_UNDEF)"); |
| 4516 | break; |
| 4517 | case TYPE_CODE_PTR: |
| 4518 | printf_filtered ("(TYPE_CODE_PTR)"); |
| 4519 | break; |
| 4520 | case TYPE_CODE_ARRAY: |
| 4521 | printf_filtered ("(TYPE_CODE_ARRAY)"); |
| 4522 | break; |
| 4523 | case TYPE_CODE_STRUCT: |
| 4524 | printf_filtered ("(TYPE_CODE_STRUCT)"); |
| 4525 | break; |
| 4526 | case TYPE_CODE_UNION: |
| 4527 | printf_filtered ("(TYPE_CODE_UNION)"); |
| 4528 | break; |
| 4529 | case TYPE_CODE_ENUM: |
| 4530 | printf_filtered ("(TYPE_CODE_ENUM)"); |
| 4531 | break; |
| 4532 | case TYPE_CODE_FLAGS: |
| 4533 | printf_filtered ("(TYPE_CODE_FLAGS)"); |
| 4534 | break; |
| 4535 | case TYPE_CODE_FUNC: |
| 4536 | printf_filtered ("(TYPE_CODE_FUNC)"); |
| 4537 | break; |
| 4538 | case TYPE_CODE_INT: |
| 4539 | printf_filtered ("(TYPE_CODE_INT)"); |
| 4540 | break; |
| 4541 | case TYPE_CODE_FLT: |
| 4542 | printf_filtered ("(TYPE_CODE_FLT)"); |
| 4543 | break; |
| 4544 | case TYPE_CODE_VOID: |
| 4545 | printf_filtered ("(TYPE_CODE_VOID)"); |
| 4546 | break; |
| 4547 | case TYPE_CODE_SET: |
| 4548 | printf_filtered ("(TYPE_CODE_SET)"); |
| 4549 | break; |
| 4550 | case TYPE_CODE_RANGE: |
| 4551 | printf_filtered ("(TYPE_CODE_RANGE)"); |
| 4552 | break; |
| 4553 | case TYPE_CODE_STRING: |
| 4554 | printf_filtered ("(TYPE_CODE_STRING)"); |
| 4555 | break; |
| 4556 | case TYPE_CODE_ERROR: |
| 4557 | printf_filtered ("(TYPE_CODE_ERROR)"); |
| 4558 | break; |
| 4559 | case TYPE_CODE_MEMBERPTR: |
| 4560 | printf_filtered ("(TYPE_CODE_MEMBERPTR)"); |
| 4561 | break; |
| 4562 | case TYPE_CODE_METHODPTR: |
| 4563 | printf_filtered ("(TYPE_CODE_METHODPTR)"); |
| 4564 | break; |
| 4565 | case TYPE_CODE_METHOD: |
| 4566 | printf_filtered ("(TYPE_CODE_METHOD)"); |
| 4567 | break; |
| 4568 | case TYPE_CODE_REF: |
| 4569 | printf_filtered ("(TYPE_CODE_REF)"); |
| 4570 | break; |
| 4571 | case TYPE_CODE_CHAR: |
| 4572 | printf_filtered ("(TYPE_CODE_CHAR)"); |
| 4573 | break; |
| 4574 | case TYPE_CODE_BOOL: |
| 4575 | printf_filtered ("(TYPE_CODE_BOOL)"); |
| 4576 | break; |
| 4577 | case TYPE_CODE_COMPLEX: |
| 4578 | printf_filtered ("(TYPE_CODE_COMPLEX)"); |
| 4579 | break; |
| 4580 | case TYPE_CODE_TYPEDEF: |
| 4581 | printf_filtered ("(TYPE_CODE_TYPEDEF)"); |
| 4582 | break; |
| 4583 | case TYPE_CODE_NAMESPACE: |
| 4584 | printf_filtered ("(TYPE_CODE_NAMESPACE)"); |
| 4585 | break; |
| 4586 | default: |
| 4587 | printf_filtered ("(UNKNOWN TYPE CODE)"); |
| 4588 | break; |
| 4589 | } |
| 4590 | puts_filtered ("\n"); |
| 4591 | printfi_filtered (spaces, "length %s\n", pulongest (TYPE_LENGTH (type))); |
| 4592 | if (TYPE_OBJFILE_OWNED (type)) |
| 4593 | { |
| 4594 | printfi_filtered (spaces, "objfile "); |
| 4595 | gdb_print_host_address (TYPE_OWNER (type).objfile, gdb_stdout); |
| 4596 | } |
| 4597 | else |
| 4598 | { |
| 4599 | printfi_filtered (spaces, "gdbarch "); |
| 4600 | gdb_print_host_address (TYPE_OWNER (type).gdbarch, gdb_stdout); |
| 4601 | } |
| 4602 | printf_filtered ("\n"); |
| 4603 | printfi_filtered (spaces, "target_type "); |
| 4604 | gdb_print_host_address (TYPE_TARGET_TYPE (type), gdb_stdout); |
| 4605 | printf_filtered ("\n"); |
| 4606 | if (TYPE_TARGET_TYPE (type) != NULL) |
| 4607 | { |
| 4608 | recursive_dump_type (TYPE_TARGET_TYPE (type), spaces + 2); |
| 4609 | } |
| 4610 | printfi_filtered (spaces, "pointer_type "); |
| 4611 | gdb_print_host_address (TYPE_POINTER_TYPE (type), gdb_stdout); |
| 4612 | printf_filtered ("\n"); |
| 4613 | printfi_filtered (spaces, "reference_type "); |
| 4614 | gdb_print_host_address (TYPE_REFERENCE_TYPE (type), gdb_stdout); |
| 4615 | printf_filtered ("\n"); |
| 4616 | printfi_filtered (spaces, "type_chain "); |
| 4617 | gdb_print_host_address (TYPE_CHAIN (type), gdb_stdout); |
| 4618 | printf_filtered ("\n"); |
| 4619 | printfi_filtered (spaces, "instance_flags 0x%x", |
| 4620 | TYPE_INSTANCE_FLAGS (type)); |
| 4621 | if (TYPE_CONST (type)) |
| 4622 | { |
| 4623 | puts_filtered (" TYPE_CONST"); |
| 4624 | } |
| 4625 | if (TYPE_VOLATILE (type)) |
| 4626 | { |
| 4627 | puts_filtered (" TYPE_VOLATILE"); |
| 4628 | } |
| 4629 | if (TYPE_CODE_SPACE (type)) |
| 4630 | { |
| 4631 | puts_filtered (" TYPE_CODE_SPACE"); |
| 4632 | } |
| 4633 | if (TYPE_DATA_SPACE (type)) |
| 4634 | { |
| 4635 | puts_filtered (" TYPE_DATA_SPACE"); |
| 4636 | } |
| 4637 | if (TYPE_ADDRESS_CLASS_1 (type)) |
| 4638 | { |
| 4639 | puts_filtered (" TYPE_ADDRESS_CLASS_1"); |
| 4640 | } |
| 4641 | if (TYPE_ADDRESS_CLASS_2 (type)) |
| 4642 | { |
| 4643 | puts_filtered (" TYPE_ADDRESS_CLASS_2"); |
| 4644 | } |
| 4645 | if (TYPE_RESTRICT (type)) |
| 4646 | { |
| 4647 | puts_filtered (" TYPE_RESTRICT"); |
| 4648 | } |
| 4649 | if (TYPE_ATOMIC (type)) |
| 4650 | { |
| 4651 | puts_filtered (" TYPE_ATOMIC"); |
| 4652 | } |
| 4653 | puts_filtered ("\n"); |
| 4654 | |
| 4655 | printfi_filtered (spaces, "flags"); |
| 4656 | if (TYPE_UNSIGNED (type)) |
| 4657 | { |
| 4658 | puts_filtered (" TYPE_UNSIGNED"); |
| 4659 | } |
| 4660 | if (TYPE_NOSIGN (type)) |
| 4661 | { |
| 4662 | puts_filtered (" TYPE_NOSIGN"); |
| 4663 | } |
| 4664 | if (TYPE_STUB (type)) |
| 4665 | { |
| 4666 | puts_filtered (" TYPE_STUB"); |
| 4667 | } |
| 4668 | if (TYPE_TARGET_STUB (type)) |
| 4669 | { |
| 4670 | puts_filtered (" TYPE_TARGET_STUB"); |
| 4671 | } |
| 4672 | if (TYPE_PROTOTYPED (type)) |
| 4673 | { |
| 4674 | puts_filtered (" TYPE_PROTOTYPED"); |
| 4675 | } |
| 4676 | if (TYPE_INCOMPLETE (type)) |
| 4677 | { |
| 4678 | puts_filtered (" TYPE_INCOMPLETE"); |
| 4679 | } |
| 4680 | if (TYPE_VARARGS (type)) |
| 4681 | { |
| 4682 | puts_filtered (" TYPE_VARARGS"); |
| 4683 | } |
| 4684 | /* This is used for things like AltiVec registers on ppc. Gcc emits |
| 4685 | an attribute for the array type, which tells whether or not we |
| 4686 | have a vector, instead of a regular array. */ |
| 4687 | if (TYPE_VECTOR (type)) |
| 4688 | { |
| 4689 | puts_filtered (" TYPE_VECTOR"); |
| 4690 | } |
| 4691 | if (TYPE_FIXED_INSTANCE (type)) |
| 4692 | { |
| 4693 | puts_filtered (" TYPE_FIXED_INSTANCE"); |
| 4694 | } |
| 4695 | if (TYPE_STUB_SUPPORTED (type)) |
| 4696 | { |
| 4697 | puts_filtered (" TYPE_STUB_SUPPORTED"); |
| 4698 | } |
| 4699 | if (TYPE_NOTTEXT (type)) |
| 4700 | { |
| 4701 | puts_filtered (" TYPE_NOTTEXT"); |
| 4702 | } |
| 4703 | puts_filtered ("\n"); |
| 4704 | printfi_filtered (spaces, "nfields %d ", TYPE_NFIELDS (type)); |
| 4705 | gdb_print_host_address (TYPE_FIELDS (type), gdb_stdout); |
| 4706 | puts_filtered ("\n"); |
| 4707 | for (idx = 0; idx < TYPE_NFIELDS (type); idx++) |
| 4708 | { |
| 4709 | if (TYPE_CODE (type) == TYPE_CODE_ENUM) |
| 4710 | printfi_filtered (spaces + 2, |
| 4711 | "[%d] enumval %s type ", |
| 4712 | idx, plongest (TYPE_FIELD_ENUMVAL (type, idx))); |
| 4713 | else |
| 4714 | printfi_filtered (spaces + 2, |
| 4715 | "[%d] bitpos %s bitsize %d type ", |
| 4716 | idx, plongest (TYPE_FIELD_BITPOS (type, idx)), |
| 4717 | TYPE_FIELD_BITSIZE (type, idx)); |
| 4718 | gdb_print_host_address (TYPE_FIELD_TYPE (type, idx), gdb_stdout); |
| 4719 | printf_filtered (" name '%s' (", |
| 4720 | TYPE_FIELD_NAME (type, idx) != NULL |
| 4721 | ? TYPE_FIELD_NAME (type, idx) |
| 4722 | : "<NULL>"); |
| 4723 | gdb_print_host_address (TYPE_FIELD_NAME (type, idx), gdb_stdout); |
| 4724 | printf_filtered (")\n"); |
| 4725 | if (TYPE_FIELD_TYPE (type, idx) != NULL) |
| 4726 | { |
| 4727 | recursive_dump_type (TYPE_FIELD_TYPE (type, idx), spaces + 4); |
| 4728 | } |
| 4729 | } |
| 4730 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| 4731 | { |
| 4732 | printfi_filtered (spaces, "low %s%s high %s%s\n", |
| 4733 | plongest (TYPE_LOW_BOUND (type)), |
| 4734 | TYPE_LOW_BOUND_UNDEFINED (type) ? " (undefined)" : "", |
| 4735 | plongest (TYPE_HIGH_BOUND (type)), |
| 4736 | TYPE_HIGH_BOUND_UNDEFINED (type) |
| 4737 | ? " (undefined)" : ""); |
| 4738 | } |
| 4739 | |
| 4740 | switch (TYPE_SPECIFIC_FIELD (type)) |
| 4741 | { |
| 4742 | case TYPE_SPECIFIC_CPLUS_STUFF: |
| 4743 | printfi_filtered (spaces, "cplus_stuff "); |
| 4744 | gdb_print_host_address (TYPE_CPLUS_SPECIFIC (type), |
| 4745 | gdb_stdout); |
| 4746 | puts_filtered ("\n"); |
| 4747 | print_cplus_stuff (type, spaces); |
| 4748 | break; |
| 4749 | |
| 4750 | case TYPE_SPECIFIC_GNAT_STUFF: |
| 4751 | printfi_filtered (spaces, "gnat_stuff "); |
| 4752 | gdb_print_host_address (TYPE_GNAT_SPECIFIC (type), gdb_stdout); |
| 4753 | puts_filtered ("\n"); |
| 4754 | print_gnat_stuff (type, spaces); |
| 4755 | break; |
| 4756 | |
| 4757 | case TYPE_SPECIFIC_FLOATFORMAT: |
| 4758 | printfi_filtered (spaces, "floatformat "); |
| 4759 | if (TYPE_FLOATFORMAT (type) == NULL |
| 4760 | || TYPE_FLOATFORMAT (type)->name == NULL) |
| 4761 | puts_filtered ("(null)"); |
| 4762 | else |
| 4763 | puts_filtered (TYPE_FLOATFORMAT (type)->name); |
| 4764 | puts_filtered ("\n"); |
| 4765 | break; |
| 4766 | |
| 4767 | case TYPE_SPECIFIC_FUNC: |
| 4768 | printfi_filtered (spaces, "calling_convention %d\n", |
| 4769 | TYPE_CALLING_CONVENTION (type)); |
| 4770 | /* tail_call_list is not printed. */ |
| 4771 | break; |
| 4772 | |
| 4773 | case TYPE_SPECIFIC_SELF_TYPE: |
| 4774 | printfi_filtered (spaces, "self_type "); |
| 4775 | gdb_print_host_address (TYPE_SELF_TYPE (type), gdb_stdout); |
| 4776 | puts_filtered ("\n"); |
| 4777 | break; |
| 4778 | } |
| 4779 | |
| 4780 | if (spaces == 0) |
| 4781 | obstack_free (&dont_print_type_obstack, NULL); |
| 4782 | } |
| 4783 | \f |
| 4784 | /* Trivial helpers for the libiberty hash table, for mapping one |
| 4785 | type to another. */ |
| 4786 | |
| 4787 | struct type_pair : public allocate_on_obstack |
| 4788 | { |
| 4789 | type_pair (struct type *old_, struct type *newobj_) |
| 4790 | : old (old_), newobj (newobj_) |
| 4791 | {} |
| 4792 | |
| 4793 | struct type * const old, * const newobj; |
| 4794 | }; |
| 4795 | |
| 4796 | static hashval_t |
| 4797 | type_pair_hash (const void *item) |
| 4798 | { |
| 4799 | const struct type_pair *pair = (const struct type_pair *) item; |
| 4800 | |
| 4801 | return htab_hash_pointer (pair->old); |
| 4802 | } |
| 4803 | |
| 4804 | static int |
| 4805 | type_pair_eq (const void *item_lhs, const void *item_rhs) |
| 4806 | { |
| 4807 | const struct type_pair *lhs = (const struct type_pair *) item_lhs; |
| 4808 | const struct type_pair *rhs = (const struct type_pair *) item_rhs; |
| 4809 | |
| 4810 | return lhs->old == rhs->old; |
| 4811 | } |
| 4812 | |
| 4813 | /* Allocate the hash table used by copy_type_recursive to walk |
| 4814 | types without duplicates. We use OBJFILE's obstack, because |
| 4815 | OBJFILE is about to be deleted. */ |
| 4816 | |
| 4817 | htab_t |
| 4818 | create_copied_types_hash (struct objfile *objfile) |
| 4819 | { |
| 4820 | return htab_create_alloc_ex (1, type_pair_hash, type_pair_eq, |
| 4821 | NULL, &objfile->objfile_obstack, |
| 4822 | hashtab_obstack_allocate, |
| 4823 | dummy_obstack_deallocate); |
| 4824 | } |
| 4825 | |
| 4826 | /* Recursively copy (deep copy) a dynamic attribute list of a type. */ |
| 4827 | |
| 4828 | static struct dynamic_prop_list * |
| 4829 | copy_dynamic_prop_list (struct obstack *objfile_obstack, |
| 4830 | struct dynamic_prop_list *list) |
| 4831 | { |
| 4832 | struct dynamic_prop_list *copy = list; |
| 4833 | struct dynamic_prop_list **node_ptr = © |
| 4834 | |
| 4835 | while (*node_ptr != NULL) |
| 4836 | { |
| 4837 | struct dynamic_prop_list *node_copy; |
| 4838 | |
| 4839 | node_copy = ((struct dynamic_prop_list *) |
| 4840 | obstack_copy (objfile_obstack, *node_ptr, |
| 4841 | sizeof (struct dynamic_prop_list))); |
| 4842 | node_copy->prop = (*node_ptr)->prop; |
| 4843 | *node_ptr = node_copy; |
| 4844 | |
| 4845 | node_ptr = &node_copy->next; |
| 4846 | } |
| 4847 | |
| 4848 | return copy; |
| 4849 | } |
| 4850 | |
| 4851 | /* Recursively copy (deep copy) TYPE, if it is associated with |
| 4852 | OBJFILE. Return a new type owned by the gdbarch associated with the type, a |
| 4853 | saved type if we have already visited TYPE (using COPIED_TYPES), or TYPE if |
| 4854 | it is not associated with OBJFILE. */ |
| 4855 | |
| 4856 | struct type * |
| 4857 | copy_type_recursive (struct objfile *objfile, |
| 4858 | struct type *type, |
| 4859 | htab_t copied_types) |
| 4860 | { |
| 4861 | void **slot; |
| 4862 | struct type *new_type; |
| 4863 | |
| 4864 | if (! TYPE_OBJFILE_OWNED (type)) |
| 4865 | return type; |
| 4866 | |
| 4867 | /* This type shouldn't be pointing to any types in other objfiles; |
| 4868 | if it did, the type might disappear unexpectedly. */ |
| 4869 | gdb_assert (TYPE_OBJFILE (type) == objfile); |
| 4870 | |
| 4871 | struct type_pair pair (type, nullptr); |
| 4872 | |
| 4873 | slot = htab_find_slot (copied_types, &pair, INSERT); |
| 4874 | if (*slot != NULL) |
| 4875 | return ((struct type_pair *) *slot)->newobj; |
| 4876 | |
| 4877 | new_type = alloc_type_arch (get_type_arch (type)); |
| 4878 | |
| 4879 | /* We must add the new type to the hash table immediately, in case |
| 4880 | we encounter this type again during a recursive call below. */ |
| 4881 | struct type_pair *stored |
| 4882 | = new (&objfile->objfile_obstack) struct type_pair (type, new_type); |
| 4883 | |
| 4884 | *slot = stored; |
| 4885 | |
| 4886 | /* Copy the common fields of types. For the main type, we simply |
| 4887 | copy the entire thing and then update specific fields as needed. */ |
| 4888 | *TYPE_MAIN_TYPE (new_type) = *TYPE_MAIN_TYPE (type); |
| 4889 | TYPE_OBJFILE_OWNED (new_type) = 0; |
| 4890 | TYPE_OWNER (new_type).gdbarch = get_type_arch (type); |
| 4891 | |
| 4892 | if (TYPE_NAME (type)) |
| 4893 | TYPE_NAME (new_type) = xstrdup (TYPE_NAME (type)); |
| 4894 | |
| 4895 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
| 4896 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); |
| 4897 | |
| 4898 | /* Copy the fields. */ |
| 4899 | if (TYPE_NFIELDS (type)) |
| 4900 | { |
| 4901 | int i, nfields; |
| 4902 | |
| 4903 | nfields = TYPE_NFIELDS (type); |
| 4904 | TYPE_FIELDS (new_type) = (struct field *) |
| 4905 | TYPE_ZALLOC (new_type, nfields * sizeof (struct field)); |
| 4906 | for (i = 0; i < nfields; i++) |
| 4907 | { |
| 4908 | TYPE_FIELD_ARTIFICIAL (new_type, i) = |
| 4909 | TYPE_FIELD_ARTIFICIAL (type, i); |
| 4910 | TYPE_FIELD_BITSIZE (new_type, i) = TYPE_FIELD_BITSIZE (type, i); |
| 4911 | if (TYPE_FIELD_TYPE (type, i)) |
| 4912 | TYPE_FIELD_TYPE (new_type, i) |
| 4913 | = copy_type_recursive (objfile, TYPE_FIELD_TYPE (type, i), |
| 4914 | copied_types); |
| 4915 | if (TYPE_FIELD_NAME (type, i)) |
| 4916 | TYPE_FIELD_NAME (new_type, i) = |
| 4917 | xstrdup (TYPE_FIELD_NAME (type, i)); |
| 4918 | switch (TYPE_FIELD_LOC_KIND (type, i)) |
| 4919 | { |
| 4920 | case FIELD_LOC_KIND_BITPOS: |
| 4921 | SET_FIELD_BITPOS (TYPE_FIELD (new_type, i), |
| 4922 | TYPE_FIELD_BITPOS (type, i)); |
| 4923 | break; |
| 4924 | case FIELD_LOC_KIND_ENUMVAL: |
| 4925 | SET_FIELD_ENUMVAL (TYPE_FIELD (new_type, i), |
| 4926 | TYPE_FIELD_ENUMVAL (type, i)); |
| 4927 | break; |
| 4928 | case FIELD_LOC_KIND_PHYSADDR: |
| 4929 | SET_FIELD_PHYSADDR (TYPE_FIELD (new_type, i), |
| 4930 | TYPE_FIELD_STATIC_PHYSADDR (type, i)); |
| 4931 | break; |
| 4932 | case FIELD_LOC_KIND_PHYSNAME: |
| 4933 | SET_FIELD_PHYSNAME (TYPE_FIELD (new_type, i), |
| 4934 | xstrdup (TYPE_FIELD_STATIC_PHYSNAME (type, |
| 4935 | i))); |
| 4936 | break; |
| 4937 | default: |
| 4938 | internal_error (__FILE__, __LINE__, |
| 4939 | _("Unexpected type field location kind: %d"), |
| 4940 | TYPE_FIELD_LOC_KIND (type, i)); |
| 4941 | } |
| 4942 | } |
| 4943 | } |
| 4944 | |
| 4945 | /* For range types, copy the bounds information. */ |
| 4946 | if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| 4947 | { |
| 4948 | TYPE_RANGE_DATA (new_type) = (struct range_bounds *) |
| 4949 | TYPE_ALLOC (new_type, sizeof (struct range_bounds)); |
| 4950 | *TYPE_RANGE_DATA (new_type) = *TYPE_RANGE_DATA (type); |
| 4951 | } |
| 4952 | |
| 4953 | if (TYPE_DYN_PROP_LIST (type) != NULL) |
| 4954 | TYPE_DYN_PROP_LIST (new_type) |
| 4955 | = copy_dynamic_prop_list (&objfile->objfile_obstack, |
| 4956 | TYPE_DYN_PROP_LIST (type)); |
| 4957 | |
| 4958 | |
| 4959 | /* Copy pointers to other types. */ |
| 4960 | if (TYPE_TARGET_TYPE (type)) |
| 4961 | TYPE_TARGET_TYPE (new_type) = |
| 4962 | copy_type_recursive (objfile, |
| 4963 | TYPE_TARGET_TYPE (type), |
| 4964 | copied_types); |
| 4965 | |
| 4966 | /* Maybe copy the type_specific bits. |
| 4967 | |
| 4968 | NOTE drow/2005-12-09: We do not copy the C++-specific bits like |
| 4969 | base classes and methods. There's no fundamental reason why we |
| 4970 | can't, but at the moment it is not needed. */ |
| 4971 | |
| 4972 | switch (TYPE_SPECIFIC_FIELD (type)) |
| 4973 | { |
| 4974 | case TYPE_SPECIFIC_NONE: |
| 4975 | break; |
| 4976 | case TYPE_SPECIFIC_FUNC: |
| 4977 | INIT_FUNC_SPECIFIC (new_type); |
| 4978 | TYPE_CALLING_CONVENTION (new_type) = TYPE_CALLING_CONVENTION (type); |
| 4979 | TYPE_NO_RETURN (new_type) = TYPE_NO_RETURN (type); |
| 4980 | TYPE_TAIL_CALL_LIST (new_type) = NULL; |
| 4981 | break; |
| 4982 | case TYPE_SPECIFIC_FLOATFORMAT: |
| 4983 | TYPE_FLOATFORMAT (new_type) = TYPE_FLOATFORMAT (type); |
| 4984 | break; |
| 4985 | case TYPE_SPECIFIC_CPLUS_STUFF: |
| 4986 | INIT_CPLUS_SPECIFIC (new_type); |
| 4987 | break; |
| 4988 | case TYPE_SPECIFIC_GNAT_STUFF: |
| 4989 | INIT_GNAT_SPECIFIC (new_type); |
| 4990 | break; |
| 4991 | case TYPE_SPECIFIC_SELF_TYPE: |
| 4992 | set_type_self_type (new_type, |
| 4993 | copy_type_recursive (objfile, TYPE_SELF_TYPE (type), |
| 4994 | copied_types)); |
| 4995 | break; |
| 4996 | default: |
| 4997 | gdb_assert_not_reached ("bad type_specific_kind"); |
| 4998 | } |
| 4999 | |
| 5000 | return new_type; |
| 5001 | } |
| 5002 | |
| 5003 | /* Make a copy of the given TYPE, except that the pointer & reference |
| 5004 | types are not preserved. |
| 5005 | |
| 5006 | This function assumes that the given type has an associated objfile. |
| 5007 | This objfile is used to allocate the new type. */ |
| 5008 | |
| 5009 | struct type * |
| 5010 | copy_type (const struct type *type) |
| 5011 | { |
| 5012 | struct type *new_type; |
| 5013 | |
| 5014 | gdb_assert (TYPE_OBJFILE_OWNED (type)); |
| 5015 | |
| 5016 | new_type = alloc_type_copy (type); |
| 5017 | TYPE_INSTANCE_FLAGS (new_type) = TYPE_INSTANCE_FLAGS (type); |
| 5018 | TYPE_LENGTH (new_type) = TYPE_LENGTH (type); |
| 5019 | memcpy (TYPE_MAIN_TYPE (new_type), TYPE_MAIN_TYPE (type), |
| 5020 | sizeof (struct main_type)); |
| 5021 | if (TYPE_DYN_PROP_LIST (type) != NULL) |
| 5022 | TYPE_DYN_PROP_LIST (new_type) |
| 5023 | = copy_dynamic_prop_list (&TYPE_OBJFILE (type) -> objfile_obstack, |
| 5024 | TYPE_DYN_PROP_LIST (type)); |
| 5025 | |
| 5026 | return new_type; |
| 5027 | } |
| 5028 | \f |
| 5029 | /* Helper functions to initialize architecture-specific types. */ |
| 5030 | |
| 5031 | /* Allocate a type structure associated with GDBARCH and set its |
| 5032 | CODE, LENGTH, and NAME fields. */ |
| 5033 | |
| 5034 | struct type * |
| 5035 | arch_type (struct gdbarch *gdbarch, |
| 5036 | enum type_code code, int bit, const char *name) |
| 5037 | { |
| 5038 | struct type *type; |
| 5039 | |
| 5040 | type = alloc_type_arch (gdbarch); |
| 5041 | set_type_code (type, code); |
| 5042 | gdb_assert ((bit % TARGET_CHAR_BIT) == 0); |
| 5043 | TYPE_LENGTH (type) = bit / TARGET_CHAR_BIT; |
| 5044 | |
| 5045 | if (name) |
| 5046 | TYPE_NAME (type) = gdbarch_obstack_strdup (gdbarch, name); |
| 5047 | |
| 5048 | return type; |
| 5049 | } |
| 5050 | |
| 5051 | /* Allocate a TYPE_CODE_INT type structure associated with GDBARCH. |
| 5052 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 5053 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 5054 | |
| 5055 | struct type * |
| 5056 | arch_integer_type (struct gdbarch *gdbarch, |
| 5057 | int bit, int unsigned_p, const char *name) |
| 5058 | { |
| 5059 | struct type *t; |
| 5060 | |
| 5061 | t = arch_type (gdbarch, TYPE_CODE_INT, bit, name); |
| 5062 | if (unsigned_p) |
| 5063 | TYPE_UNSIGNED (t) = 1; |
| 5064 | |
| 5065 | return t; |
| 5066 | } |
| 5067 | |
| 5068 | /* Allocate a TYPE_CODE_CHAR type structure associated with GDBARCH. |
| 5069 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 5070 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 5071 | |
| 5072 | struct type * |
| 5073 | arch_character_type (struct gdbarch *gdbarch, |
| 5074 | int bit, int unsigned_p, const char *name) |
| 5075 | { |
| 5076 | struct type *t; |
| 5077 | |
| 5078 | t = arch_type (gdbarch, TYPE_CODE_CHAR, bit, name); |
| 5079 | if (unsigned_p) |
| 5080 | TYPE_UNSIGNED (t) = 1; |
| 5081 | |
| 5082 | return t; |
| 5083 | } |
| 5084 | |
| 5085 | /* Allocate a TYPE_CODE_BOOL type structure associated with GDBARCH. |
| 5086 | BIT is the type size in bits. If UNSIGNED_P is non-zero, set |
| 5087 | the type's TYPE_UNSIGNED flag. NAME is the type name. */ |
| 5088 | |
| 5089 | struct type * |
| 5090 | arch_boolean_type (struct gdbarch *gdbarch, |
| 5091 | int bit, int unsigned_p, const char *name) |
| 5092 | { |
| 5093 | struct type *t; |
| 5094 | |
| 5095 | t = arch_type (gdbarch, TYPE_CODE_BOOL, bit, name); |
| 5096 | if (unsigned_p) |
| 5097 | TYPE_UNSIGNED (t) = 1; |
| 5098 | |
| 5099 | return t; |
| 5100 | } |
| 5101 | |
| 5102 | /* Allocate a TYPE_CODE_FLT type structure associated with GDBARCH. |
| 5103 | BIT is the type size in bits; if BIT equals -1, the size is |
| 5104 | determined by the floatformat. NAME is the type name. Set the |
| 5105 | TYPE_FLOATFORMAT from FLOATFORMATS. */ |
| 5106 | |
| 5107 | struct type * |
| 5108 | arch_float_type (struct gdbarch *gdbarch, |
| 5109 | int bit, const char *name, |
| 5110 | const struct floatformat **floatformats) |
| 5111 | { |
| 5112 | const struct floatformat *fmt = floatformats[gdbarch_byte_order (gdbarch)]; |
| 5113 | struct type *t; |
| 5114 | |
| 5115 | bit = verify_floatformat (bit, fmt); |
| 5116 | t = arch_type (gdbarch, TYPE_CODE_FLT, bit, name); |
| 5117 | TYPE_FLOATFORMAT (t) = fmt; |
| 5118 | |
| 5119 | return t; |
| 5120 | } |
| 5121 | |
| 5122 | /* Allocate a TYPE_CODE_DECFLOAT type structure associated with GDBARCH. |
| 5123 | BIT is the type size in bits. NAME is the type name. */ |
| 5124 | |
| 5125 | struct type * |
| 5126 | arch_decfloat_type (struct gdbarch *gdbarch, int bit, const char *name) |
| 5127 | { |
| 5128 | struct type *t; |
| 5129 | |
| 5130 | t = arch_type (gdbarch, TYPE_CODE_DECFLOAT, bit, name); |
| 5131 | return t; |
| 5132 | } |
| 5133 | |
| 5134 | /* Allocate a TYPE_CODE_COMPLEX type structure associated with GDBARCH. |
| 5135 | NAME is the type name. TARGET_TYPE is the component float type. */ |
| 5136 | |
| 5137 | struct type * |
| 5138 | arch_complex_type (struct gdbarch *gdbarch, |
| 5139 | const char *name, struct type *target_type) |
| 5140 | { |
| 5141 | struct type *t; |
| 5142 | |
| 5143 | t = arch_type (gdbarch, TYPE_CODE_COMPLEX, |
| 5144 | 2 * TYPE_LENGTH (target_type) * TARGET_CHAR_BIT, name); |
| 5145 | TYPE_TARGET_TYPE (t) = target_type; |
| 5146 | return t; |
| 5147 | } |
| 5148 | |
| 5149 | /* Allocate a TYPE_CODE_PTR type structure associated with GDBARCH. |
| 5150 | BIT is the pointer type size in bits. NAME is the type name. |
| 5151 | TARGET_TYPE is the pointer target type. Always sets the pointer type's |
| 5152 | TYPE_UNSIGNED flag. */ |
| 5153 | |
| 5154 | struct type * |
| 5155 | arch_pointer_type (struct gdbarch *gdbarch, |
| 5156 | int bit, const char *name, struct type *target_type) |
| 5157 | { |
| 5158 | struct type *t; |
| 5159 | |
| 5160 | t = arch_type (gdbarch, TYPE_CODE_PTR, bit, name); |
| 5161 | TYPE_TARGET_TYPE (t) = target_type; |
| 5162 | TYPE_UNSIGNED (t) = 1; |
| 5163 | return t; |
| 5164 | } |
| 5165 | |
| 5166 | /* Allocate a TYPE_CODE_FLAGS type structure associated with GDBARCH. |
| 5167 | NAME is the type name. BIT is the size of the flag word in bits. */ |
| 5168 | |
| 5169 | struct type * |
| 5170 | arch_flags_type (struct gdbarch *gdbarch, const char *name, int bit) |
| 5171 | { |
| 5172 | struct type *type; |
| 5173 | |
| 5174 | type = arch_type (gdbarch, TYPE_CODE_FLAGS, bit, name); |
| 5175 | TYPE_UNSIGNED (type) = 1; |
| 5176 | TYPE_NFIELDS (type) = 0; |
| 5177 | /* Pre-allocate enough space assuming every field is one bit. */ |
| 5178 | TYPE_FIELDS (type) |
| 5179 | = (struct field *) TYPE_ZALLOC (type, bit * sizeof (struct field)); |
| 5180 | |
| 5181 | return type; |
| 5182 | } |
| 5183 | |
| 5184 | /* Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at |
| 5185 | position BITPOS is called NAME. Pass NAME as "" for fields that |
| 5186 | should not be printed. */ |
| 5187 | |
| 5188 | void |
| 5189 | append_flags_type_field (struct type *type, int start_bitpos, int nr_bits, |
| 5190 | struct type *field_type, const char *name) |
| 5191 | { |
| 5192 | int type_bitsize = TYPE_LENGTH (type) * TARGET_CHAR_BIT; |
| 5193 | int field_nr = TYPE_NFIELDS (type); |
| 5194 | |
| 5195 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLAGS); |
| 5196 | gdb_assert (TYPE_NFIELDS (type) + 1 <= type_bitsize); |
| 5197 | gdb_assert (start_bitpos >= 0 && start_bitpos < type_bitsize); |
| 5198 | gdb_assert (nr_bits >= 1 && nr_bits <= type_bitsize); |
| 5199 | gdb_assert (name != NULL); |
| 5200 | |
| 5201 | TYPE_FIELD_NAME (type, field_nr) = xstrdup (name); |
| 5202 | TYPE_FIELD_TYPE (type, field_nr) = field_type; |
| 5203 | SET_FIELD_BITPOS (TYPE_FIELD (type, field_nr), start_bitpos); |
| 5204 | TYPE_FIELD_BITSIZE (type, field_nr) = nr_bits; |
| 5205 | ++TYPE_NFIELDS (type); |
| 5206 | } |
| 5207 | |
| 5208 | /* Special version of append_flags_type_field to add a flag field. |
| 5209 | Add field to TYPE_CODE_FLAGS type TYPE to indicate the bit at |
| 5210 | position BITPOS is called NAME. */ |
| 5211 | |
| 5212 | void |
| 5213 | append_flags_type_flag (struct type *type, int bitpos, const char *name) |
| 5214 | { |
| 5215 | struct gdbarch *gdbarch = get_type_arch (type); |
| 5216 | |
| 5217 | append_flags_type_field (type, bitpos, 1, |
| 5218 | builtin_type (gdbarch)->builtin_bool, |
| 5219 | name); |
| 5220 | } |
| 5221 | |
| 5222 | /* Allocate a TYPE_CODE_STRUCT or TYPE_CODE_UNION type structure (as |
| 5223 | specified by CODE) associated with GDBARCH. NAME is the type name. */ |
| 5224 | |
| 5225 | struct type * |
| 5226 | arch_composite_type (struct gdbarch *gdbarch, const char *name, |
| 5227 | enum type_code code) |
| 5228 | { |
| 5229 | struct type *t; |
| 5230 | |
| 5231 | gdb_assert (code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION); |
| 5232 | t = arch_type (gdbarch, code, 0, NULL); |
| 5233 | TYPE_NAME (t) = name; |
| 5234 | INIT_CPLUS_SPECIFIC (t); |
| 5235 | return t; |
| 5236 | } |
| 5237 | |
| 5238 | /* Add new field with name NAME and type FIELD to composite type T. |
| 5239 | Do not set the field's position or adjust the type's length; |
| 5240 | the caller should do so. Return the new field. */ |
| 5241 | |
| 5242 | struct field * |
| 5243 | append_composite_type_field_raw (struct type *t, const char *name, |
| 5244 | struct type *field) |
| 5245 | { |
| 5246 | struct field *f; |
| 5247 | |
| 5248 | TYPE_NFIELDS (t) = TYPE_NFIELDS (t) + 1; |
| 5249 | TYPE_FIELDS (t) = XRESIZEVEC (struct field, TYPE_FIELDS (t), |
| 5250 | TYPE_NFIELDS (t)); |
| 5251 | f = &(TYPE_FIELDS (t)[TYPE_NFIELDS (t) - 1]); |
| 5252 | memset (f, 0, sizeof f[0]); |
| 5253 | FIELD_TYPE (f[0]) = field; |
| 5254 | FIELD_NAME (f[0]) = name; |
| 5255 | return f; |
| 5256 | } |
| 5257 | |
| 5258 | /* Add new field with name NAME and type FIELD to composite type T. |
| 5259 | ALIGNMENT (if non-zero) specifies the minimum field alignment. */ |
| 5260 | |
| 5261 | void |
| 5262 | append_composite_type_field_aligned (struct type *t, const char *name, |
| 5263 | struct type *field, int alignment) |
| 5264 | { |
| 5265 | struct field *f = append_composite_type_field_raw (t, name, field); |
| 5266 | |
| 5267 | if (TYPE_CODE (t) == TYPE_CODE_UNION) |
| 5268 | { |
| 5269 | if (TYPE_LENGTH (t) < TYPE_LENGTH (field)) |
| 5270 | TYPE_LENGTH (t) = TYPE_LENGTH (field); |
| 5271 | } |
| 5272 | else if (TYPE_CODE (t) == TYPE_CODE_STRUCT) |
| 5273 | { |
| 5274 | TYPE_LENGTH (t) = TYPE_LENGTH (t) + TYPE_LENGTH (field); |
| 5275 | if (TYPE_NFIELDS (t) > 1) |
| 5276 | { |
| 5277 | SET_FIELD_BITPOS (f[0], |
| 5278 | (FIELD_BITPOS (f[-1]) |
| 5279 | + (TYPE_LENGTH (FIELD_TYPE (f[-1])) |
| 5280 | * TARGET_CHAR_BIT))); |
| 5281 | |
| 5282 | if (alignment) |
| 5283 | { |
| 5284 | int left; |
| 5285 | |
| 5286 | alignment *= TARGET_CHAR_BIT; |
| 5287 | left = FIELD_BITPOS (f[0]) % alignment; |
| 5288 | |
| 5289 | if (left) |
| 5290 | { |
| 5291 | SET_FIELD_BITPOS (f[0], FIELD_BITPOS (f[0]) + (alignment - left)); |
| 5292 | TYPE_LENGTH (t) += (alignment - left) / TARGET_CHAR_BIT; |
| 5293 | } |
| 5294 | } |
| 5295 | } |
| 5296 | } |
| 5297 | } |
| 5298 | |
| 5299 | /* Add new field with name NAME and type FIELD to composite type T. */ |
| 5300 | |
| 5301 | void |
| 5302 | append_composite_type_field (struct type *t, const char *name, |
| 5303 | struct type *field) |
| 5304 | { |
| 5305 | append_composite_type_field_aligned (t, name, field, 0); |
| 5306 | } |
| 5307 | |
| 5308 | static struct gdbarch_data *gdbtypes_data; |
| 5309 | |
| 5310 | const struct builtin_type * |
| 5311 | builtin_type (struct gdbarch *gdbarch) |
| 5312 | { |
| 5313 | return (const struct builtin_type *) gdbarch_data (gdbarch, gdbtypes_data); |
| 5314 | } |
| 5315 | |
| 5316 | static void * |
| 5317 | gdbtypes_post_init (struct gdbarch *gdbarch) |
| 5318 | { |
| 5319 | struct builtin_type *builtin_type |
| 5320 | = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_type); |
| 5321 | |
| 5322 | /* Basic types. */ |
| 5323 | builtin_type->builtin_void |
| 5324 | = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
| 5325 | builtin_type->builtin_char |
| 5326 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, |
| 5327 | !gdbarch_char_signed (gdbarch), "char"); |
| 5328 | TYPE_NOSIGN (builtin_type->builtin_char) = 1; |
| 5329 | builtin_type->builtin_signed_char |
| 5330 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, |
| 5331 | 0, "signed char"); |
| 5332 | builtin_type->builtin_unsigned_char |
| 5333 | = arch_integer_type (gdbarch, TARGET_CHAR_BIT, |
| 5334 | 1, "unsigned char"); |
| 5335 | builtin_type->builtin_short |
| 5336 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), |
| 5337 | 0, "short"); |
| 5338 | builtin_type->builtin_unsigned_short |
| 5339 | = arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), |
| 5340 | 1, "unsigned short"); |
| 5341 | builtin_type->builtin_int |
| 5342 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 5343 | 0, "int"); |
| 5344 | builtin_type->builtin_unsigned_int |
| 5345 | = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 5346 | 1, "unsigned int"); |
| 5347 | builtin_type->builtin_long |
| 5348 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), |
| 5349 | 0, "long"); |
| 5350 | builtin_type->builtin_unsigned_long |
| 5351 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), |
| 5352 | 1, "unsigned long"); |
| 5353 | builtin_type->builtin_long_long |
| 5354 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), |
| 5355 | 0, "long long"); |
| 5356 | builtin_type->builtin_unsigned_long_long |
| 5357 | = arch_integer_type (gdbarch, gdbarch_long_long_bit (gdbarch), |
| 5358 | 1, "unsigned long long"); |
| 5359 | builtin_type->builtin_half |
| 5360 | = arch_float_type (gdbarch, gdbarch_half_bit (gdbarch), |
| 5361 | "half", gdbarch_half_format (gdbarch)); |
| 5362 | builtin_type->builtin_float |
| 5363 | = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), |
| 5364 | "float", gdbarch_float_format (gdbarch)); |
| 5365 | builtin_type->builtin_double |
| 5366 | = arch_float_type (gdbarch, gdbarch_double_bit (gdbarch), |
| 5367 | "double", gdbarch_double_format (gdbarch)); |
| 5368 | builtin_type->builtin_long_double |
| 5369 | = arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch), |
| 5370 | "long double", gdbarch_long_double_format (gdbarch)); |
| 5371 | builtin_type->builtin_complex |
| 5372 | = arch_complex_type (gdbarch, "complex", |
| 5373 | builtin_type->builtin_float); |
| 5374 | builtin_type->builtin_double_complex |
| 5375 | = arch_complex_type (gdbarch, "double complex", |
| 5376 | builtin_type->builtin_double); |
| 5377 | builtin_type->builtin_string |
| 5378 | = arch_type (gdbarch, TYPE_CODE_STRING, TARGET_CHAR_BIT, "string"); |
| 5379 | builtin_type->builtin_bool |
| 5380 | = arch_type (gdbarch, TYPE_CODE_BOOL, TARGET_CHAR_BIT, "bool"); |
| 5381 | |
| 5382 | /* The following three are about decimal floating point types, which |
| 5383 | are 32-bits, 64-bits and 128-bits respectively. */ |
| 5384 | builtin_type->builtin_decfloat |
| 5385 | = arch_decfloat_type (gdbarch, 32, "_Decimal32"); |
| 5386 | builtin_type->builtin_decdouble |
| 5387 | = arch_decfloat_type (gdbarch, 64, "_Decimal64"); |
| 5388 | builtin_type->builtin_declong |
| 5389 | = arch_decfloat_type (gdbarch, 128, "_Decimal128"); |
| 5390 | |
| 5391 | /* "True" character types. */ |
| 5392 | builtin_type->builtin_true_char |
| 5393 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 0, "true character"); |
| 5394 | builtin_type->builtin_true_unsigned_char |
| 5395 | = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "true character"); |
| 5396 | |
| 5397 | /* Fixed-size integer types. */ |
| 5398 | builtin_type->builtin_int0 |
| 5399 | = arch_integer_type (gdbarch, 0, 0, "int0_t"); |
| 5400 | builtin_type->builtin_int8 |
| 5401 | = arch_integer_type (gdbarch, 8, 0, "int8_t"); |
| 5402 | builtin_type->builtin_uint8 |
| 5403 | = arch_integer_type (gdbarch, 8, 1, "uint8_t"); |
| 5404 | builtin_type->builtin_int16 |
| 5405 | = arch_integer_type (gdbarch, 16, 0, "int16_t"); |
| 5406 | builtin_type->builtin_uint16 |
| 5407 | = arch_integer_type (gdbarch, 16, 1, "uint16_t"); |
| 5408 | builtin_type->builtin_int24 |
| 5409 | = arch_integer_type (gdbarch, 24, 0, "int24_t"); |
| 5410 | builtin_type->builtin_uint24 |
| 5411 | = arch_integer_type (gdbarch, 24, 1, "uint24_t"); |
| 5412 | builtin_type->builtin_int32 |
| 5413 | = arch_integer_type (gdbarch, 32, 0, "int32_t"); |
| 5414 | builtin_type->builtin_uint32 |
| 5415 | = arch_integer_type (gdbarch, 32, 1, "uint32_t"); |
| 5416 | builtin_type->builtin_int64 |
| 5417 | = arch_integer_type (gdbarch, 64, 0, "int64_t"); |
| 5418 | builtin_type->builtin_uint64 |
| 5419 | = arch_integer_type (gdbarch, 64, 1, "uint64_t"); |
| 5420 | builtin_type->builtin_int128 |
| 5421 | = arch_integer_type (gdbarch, 128, 0, "int128_t"); |
| 5422 | builtin_type->builtin_uint128 |
| 5423 | = arch_integer_type (gdbarch, 128, 1, "uint128_t"); |
| 5424 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_int8) |= |
| 5425 | TYPE_INSTANCE_FLAG_NOTTEXT; |
| 5426 | TYPE_INSTANCE_FLAGS (builtin_type->builtin_uint8) |= |
| 5427 | TYPE_INSTANCE_FLAG_NOTTEXT; |
| 5428 | |
| 5429 | /* Wide character types. */ |
| 5430 | builtin_type->builtin_char16 |
| 5431 | = arch_integer_type (gdbarch, 16, 1, "char16_t"); |
| 5432 | builtin_type->builtin_char32 |
| 5433 | = arch_integer_type (gdbarch, 32, 1, "char32_t"); |
| 5434 | builtin_type->builtin_wchar |
| 5435 | = arch_integer_type (gdbarch, gdbarch_wchar_bit (gdbarch), |
| 5436 | !gdbarch_wchar_signed (gdbarch), "wchar_t"); |
| 5437 | |
| 5438 | /* Default data/code pointer types. */ |
| 5439 | builtin_type->builtin_data_ptr |
| 5440 | = lookup_pointer_type (builtin_type->builtin_void); |
| 5441 | builtin_type->builtin_func_ptr |
| 5442 | = lookup_pointer_type (lookup_function_type (builtin_type->builtin_void)); |
| 5443 | builtin_type->builtin_func_func |
| 5444 | = lookup_function_type (builtin_type->builtin_func_ptr); |
| 5445 | |
| 5446 | /* This type represents a GDB internal function. */ |
| 5447 | builtin_type->internal_fn |
| 5448 | = arch_type (gdbarch, TYPE_CODE_INTERNAL_FUNCTION, 0, |
| 5449 | "<internal function>"); |
| 5450 | |
| 5451 | /* This type represents an xmethod. */ |
| 5452 | builtin_type->xmethod |
| 5453 | = arch_type (gdbarch, TYPE_CODE_XMETHOD, 0, "<xmethod>"); |
| 5454 | |
| 5455 | return builtin_type; |
| 5456 | } |
| 5457 | |
| 5458 | /* This set of objfile-based types is intended to be used by symbol |
| 5459 | readers as basic types. */ |
| 5460 | |
| 5461 | static const struct objfile_key<struct objfile_type, |
| 5462 | gdb::noop_deleter<struct objfile_type>> |
| 5463 | objfile_type_data; |
| 5464 | |
| 5465 | const struct objfile_type * |
| 5466 | objfile_type (struct objfile *objfile) |
| 5467 | { |
| 5468 | struct gdbarch *gdbarch; |
| 5469 | struct objfile_type *objfile_type = objfile_type_data.get (objfile); |
| 5470 | |
| 5471 | if (objfile_type) |
| 5472 | return objfile_type; |
| 5473 | |
| 5474 | objfile_type = OBSTACK_CALLOC (&objfile->objfile_obstack, |
| 5475 | 1, struct objfile_type); |
| 5476 | |
| 5477 | /* Use the objfile architecture to determine basic type properties. */ |
| 5478 | gdbarch = get_objfile_arch (objfile); |
| 5479 | |
| 5480 | /* Basic types. */ |
| 5481 | objfile_type->builtin_void |
| 5482 | = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void"); |
| 5483 | objfile_type->builtin_char |
| 5484 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
| 5485 | !gdbarch_char_signed (gdbarch), "char"); |
| 5486 | TYPE_NOSIGN (objfile_type->builtin_char) = 1; |
| 5487 | objfile_type->builtin_signed_char |
| 5488 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
| 5489 | 0, "signed char"); |
| 5490 | objfile_type->builtin_unsigned_char |
| 5491 | = init_integer_type (objfile, TARGET_CHAR_BIT, |
| 5492 | 1, "unsigned char"); |
| 5493 | objfile_type->builtin_short |
| 5494 | = init_integer_type (objfile, gdbarch_short_bit (gdbarch), |
| 5495 | 0, "short"); |
| 5496 | objfile_type->builtin_unsigned_short |
| 5497 | = init_integer_type (objfile, gdbarch_short_bit (gdbarch), |
| 5498 | 1, "unsigned short"); |
| 5499 | objfile_type->builtin_int |
| 5500 | = init_integer_type (objfile, gdbarch_int_bit (gdbarch), |
| 5501 | 0, "int"); |
| 5502 | objfile_type->builtin_unsigned_int |
| 5503 | = init_integer_type (objfile, gdbarch_int_bit (gdbarch), |
| 5504 | 1, "unsigned int"); |
| 5505 | objfile_type->builtin_long |
| 5506 | = init_integer_type (objfile, gdbarch_long_bit (gdbarch), |
| 5507 | 0, "long"); |
| 5508 | objfile_type->builtin_unsigned_long |
| 5509 | = init_integer_type (objfile, gdbarch_long_bit (gdbarch), |
| 5510 | 1, "unsigned long"); |
| 5511 | objfile_type->builtin_long_long |
| 5512 | = init_integer_type (objfile, gdbarch_long_long_bit (gdbarch), |
| 5513 | 0, "long long"); |
| 5514 | objfile_type->builtin_unsigned_long_long |
| 5515 | = init_integer_type (objfile, gdbarch_long_long_bit (gdbarch), |
| 5516 | 1, "unsigned long long"); |
| 5517 | objfile_type->builtin_float |
| 5518 | = init_float_type (objfile, gdbarch_float_bit (gdbarch), |
| 5519 | "float", gdbarch_float_format (gdbarch)); |
| 5520 | objfile_type->builtin_double |
| 5521 | = init_float_type (objfile, gdbarch_double_bit (gdbarch), |
| 5522 | "double", gdbarch_double_format (gdbarch)); |
| 5523 | objfile_type->builtin_long_double |
| 5524 | = init_float_type (objfile, gdbarch_long_double_bit (gdbarch), |
| 5525 | "long double", gdbarch_long_double_format (gdbarch)); |
| 5526 | |
| 5527 | /* This type represents a type that was unrecognized in symbol read-in. */ |
| 5528 | objfile_type->builtin_error |
| 5529 | = init_type (objfile, TYPE_CODE_ERROR, 0, "<unknown type>"); |
| 5530 | |
| 5531 | /* The following set of types is used for symbols with no |
| 5532 | debug information. */ |
| 5533 | objfile_type->nodebug_text_symbol |
| 5534 | = init_type (objfile, TYPE_CODE_FUNC, TARGET_CHAR_BIT, |
| 5535 | "<text variable, no debug info>"); |
| 5536 | objfile_type->nodebug_text_gnu_ifunc_symbol |
| 5537 | = init_type (objfile, TYPE_CODE_FUNC, TARGET_CHAR_BIT, |
| 5538 | "<text gnu-indirect-function variable, no debug info>"); |
| 5539 | TYPE_GNU_IFUNC (objfile_type->nodebug_text_gnu_ifunc_symbol) = 1; |
| 5540 | objfile_type->nodebug_got_plt_symbol |
| 5541 | = init_pointer_type (objfile, gdbarch_addr_bit (gdbarch), |
| 5542 | "<text from jump slot in .got.plt, no debug info>", |
| 5543 | objfile_type->nodebug_text_symbol); |
| 5544 | objfile_type->nodebug_data_symbol |
| 5545 | = init_nodebug_var_type (objfile, "<data variable, no debug info>"); |
| 5546 | objfile_type->nodebug_unknown_symbol |
| 5547 | = init_nodebug_var_type (objfile, "<variable (not text or data), no debug info>"); |
| 5548 | objfile_type->nodebug_tls_symbol |
| 5549 | = init_nodebug_var_type (objfile, "<thread local variable, no debug info>"); |
| 5550 | |
| 5551 | /* NOTE: on some targets, addresses and pointers are not necessarily |
| 5552 | the same. |
| 5553 | |
| 5554 | The upshot is: |
| 5555 | - gdb's `struct type' always describes the target's |
| 5556 | representation. |
| 5557 | - gdb's `struct value' objects should always hold values in |
| 5558 | target form. |
| 5559 | - gdb's CORE_ADDR values are addresses in the unified virtual |
| 5560 | address space that the assembler and linker work with. Thus, |
| 5561 | since target_read_memory takes a CORE_ADDR as an argument, it |
| 5562 | can access any memory on the target, even if the processor has |
| 5563 | separate code and data address spaces. |
| 5564 | |
| 5565 | In this context, objfile_type->builtin_core_addr is a bit odd: |
| 5566 | it's a target type for a value the target will never see. It's |
| 5567 | only used to hold the values of (typeless) linker symbols, which |
| 5568 | are indeed in the unified virtual address space. */ |
| 5569 | |
| 5570 | objfile_type->builtin_core_addr |
| 5571 | = init_integer_type (objfile, gdbarch_addr_bit (gdbarch), 1, |
| 5572 | "__CORE_ADDR"); |
| 5573 | |
| 5574 | objfile_type_data.set (objfile, objfile_type); |
| 5575 | return objfile_type; |
| 5576 | } |
| 5577 | |
| 5578 | void |
| 5579 | _initialize_gdbtypes (void) |
| 5580 | { |
| 5581 | gdbtypes_data = gdbarch_data_register_post_init (gdbtypes_post_init); |
| 5582 | |
| 5583 | add_setshow_zuinteger_cmd ("overload", no_class, &overload_debug, |
| 5584 | _("Set debugging of C++ overloading."), |
| 5585 | _("Show debugging of C++ overloading."), |
| 5586 | _("When enabled, ranking of the " |
| 5587 | "functions is displayed."), |
| 5588 | NULL, |
| 5589 | show_overload_debug, |
| 5590 | &setdebuglist, &showdebuglist); |
| 5591 | |
| 5592 | /* Add user knob for controlling resolution of opaque types. */ |
| 5593 | add_setshow_boolean_cmd ("opaque-type-resolution", class_support, |
| 5594 | &opaque_type_resolution, |
| 5595 | _("Set resolution of opaque struct/class/union" |
| 5596 | " types (if set before loading symbols)."), |
| 5597 | _("Show resolution of opaque struct/class/union" |
| 5598 | " types (if set before loading symbols)."), |
| 5599 | NULL, NULL, |
| 5600 | show_opaque_type_resolution, |
| 5601 | &setlist, &showlist); |
| 5602 | |
| 5603 | /* Add an option to permit non-strict type checking. */ |
| 5604 | add_setshow_boolean_cmd ("type", class_support, |
| 5605 | &strict_type_checking, |
| 5606 | _("Set strict type checking."), |
| 5607 | _("Show strict type checking."), |
| 5608 | NULL, NULL, |
| 5609 | show_strict_type_checking, |
| 5610 | &setchecklist, &showchecklist); |
| 5611 | } |