| 1 | /* Convert types from GDB to GCC |
| 2 | |
| 3 | Copyright (C) 2014-2021 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "gdbsupport/preprocessor.h" |
| 23 | #include "gdbtypes.h" |
| 24 | #include "compile-internal.h" |
| 25 | #include "compile-cplus.h" |
| 26 | #include "gdbsupport/gdb_assert.h" |
| 27 | #include "symtab.h" |
| 28 | #include "source.h" |
| 29 | #include "cp-support.h" |
| 30 | #include "cp-abi.h" |
| 31 | #include "objfiles.h" |
| 32 | #include "block.h" |
| 33 | #include "gdbcmd.h" |
| 34 | #include "c-lang.h" |
| 35 | #include "compile-c.h" |
| 36 | #include <algorithm> |
| 37 | |
| 38 | /* Default compile flags for C++. */ |
| 39 | |
| 40 | const char *compile_cplus_instance::m_default_cflags = "-std=gnu++11"; |
| 41 | |
| 42 | /* Flag to enable internal debugging. */ |
| 43 | |
| 44 | static bool debug_compile_cplus_types = false; |
| 45 | |
| 46 | /* Flag to enable internal scope switching debugging. */ |
| 47 | |
| 48 | static bool debug_compile_cplus_scopes = false; |
| 49 | |
| 50 | /* Forward declarations. */ |
| 51 | |
| 52 | static gcc_type compile_cplus_convert_func (compile_cplus_instance *instance, |
| 53 | struct type *type, |
| 54 | bool strip_artificial); |
| 55 | |
| 56 | /* See description in compile-cplus.h. */ |
| 57 | |
| 58 | gdb::unique_xmalloc_ptr<char> |
| 59 | compile_cplus_instance::decl_name (const char *natural) |
| 60 | { |
| 61 | if (natural == nullptr) |
| 62 | return nullptr; |
| 63 | |
| 64 | gdb::unique_xmalloc_ptr<char> name = cp_func_name (natural); |
| 65 | if (name != nullptr) |
| 66 | return name; |
| 67 | |
| 68 | return make_unique_xstrdup (natural); |
| 69 | } |
| 70 | |
| 71 | /* Get the access flag for the NUM'th field of TYPE. */ |
| 72 | |
| 73 | static enum gcc_cp_symbol_kind |
| 74 | get_field_access_flag (const struct type *type, int num) |
| 75 | { |
| 76 | if (TYPE_FIELD_PROTECTED (type, num)) |
| 77 | return GCC_CP_ACCESS_PROTECTED; |
| 78 | else if (TYPE_FIELD_PRIVATE (type, num)) |
| 79 | return GCC_CP_ACCESS_PRIVATE; |
| 80 | |
| 81 | /* GDB assumes everything else is public. */ |
| 82 | return GCC_CP_ACCESS_PUBLIC; |
| 83 | } |
| 84 | |
| 85 | /* Get the access flag for the NUM'th method of TYPE's FNI'th |
| 86 | fieldlist. */ |
| 87 | |
| 88 | enum gcc_cp_symbol_kind |
| 89 | get_method_access_flag (const struct type *type, int fni, int num) |
| 90 | { |
| 91 | gdb_assert (type->code () == TYPE_CODE_STRUCT); |
| 92 | |
| 93 | /* If this type was not declared a class, everything is public. */ |
| 94 | if (!TYPE_DECLARED_CLASS (type)) |
| 95 | return GCC_CP_ACCESS_PUBLIC; |
| 96 | |
| 97 | /* Otherwise, read accessibility from the fn_field. */ |
| 98 | const struct fn_field *methods = TYPE_FN_FIELDLIST1 (type, fni); |
| 99 | if (TYPE_FN_FIELD_PROTECTED (methods, num)) |
| 100 | return GCC_CP_ACCESS_PROTECTED; |
| 101 | else if (TYPE_FN_FIELD_PRIVATE (methods, num)) |
| 102 | return GCC_CP_ACCESS_PRIVATE; |
| 103 | else |
| 104 | return GCC_CP_ACCESS_PUBLIC; |
| 105 | } |
| 106 | |
| 107 | /* A useful debugging function to output the scope SCOPE to stdout. */ |
| 108 | |
| 109 | static void __attribute__ ((used)) |
| 110 | debug_print_scope (const compile_scope &scope) |
| 111 | { |
| 112 | for (const auto &comp: scope) |
| 113 | { |
| 114 | const char *symbol = (comp.bsymbol.symbol != nullptr |
| 115 | ? comp.bsymbol.symbol->natural_name () |
| 116 | : "<none>"); |
| 117 | |
| 118 | printf_unfiltered ("\tname = %s, symbol = %s\n", comp.name.c_str (), |
| 119 | symbol); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | /* See description in compile-cplus.h. */ |
| 124 | |
| 125 | compile_scope |
| 126 | type_name_to_scope (const char *type_name, const struct block *block) |
| 127 | { |
| 128 | compile_scope scope; |
| 129 | |
| 130 | if (type_name == nullptr) |
| 131 | { |
| 132 | /* An anonymous type. We cannot really do much here. We simply cannot |
| 133 | look up anonymous types easily/at all. */ |
| 134 | return scope; |
| 135 | } |
| 136 | |
| 137 | const char *p = type_name; |
| 138 | std::string lookup_name; |
| 139 | |
| 140 | while (*p != '\0') |
| 141 | { |
| 142 | /* Create a string token of the first component of TYPE_NAME. */ |
| 143 | int len = cp_find_first_component (p); |
| 144 | std::string s (p, len); |
| 145 | |
| 146 | /* Advance past the last token. */ |
| 147 | p += len; |
| 148 | |
| 149 | /* Look up the symbol and decide when to stop. */ |
| 150 | if (!lookup_name.empty ()) |
| 151 | lookup_name += "::"; |
| 152 | lookup_name += s; |
| 153 | |
| 154 | /* Look up the resulting name. */ |
| 155 | struct block_symbol bsymbol |
| 156 | = lookup_symbol (lookup_name.c_str (), block, VAR_DOMAIN, nullptr); |
| 157 | |
| 158 | if (bsymbol.symbol != nullptr) |
| 159 | { |
| 160 | scope_component comp = {s, bsymbol}; |
| 161 | |
| 162 | scope.push_back (comp); |
| 163 | |
| 164 | if (SYMBOL_TYPE (bsymbol.symbol)->code () != TYPE_CODE_NAMESPACE) |
| 165 | { |
| 166 | /* We're done. */ |
| 167 | break; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | if (*p == ':') |
| 172 | { |
| 173 | ++p; |
| 174 | if (*p == ':') |
| 175 | ++p; |
| 176 | else |
| 177 | { |
| 178 | /* This shouldn't happen since we are not attempting to |
| 179 | loop over user input. This name is generated by GDB |
| 180 | from debug info. */ |
| 181 | internal_error (__FILE__, __LINE__, |
| 182 | _("malformed TYPE_NAME during parsing")); |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | return scope; |
| 188 | } |
| 189 | |
| 190 | /* Compare two scope_components for equality. These are equal if the names |
| 191 | of the two components' are the same. */ |
| 192 | |
| 193 | bool |
| 194 | operator== (const scope_component &lhs, const scope_component &rhs) |
| 195 | { |
| 196 | return lhs.name == rhs.name; |
| 197 | } |
| 198 | |
| 199 | /* Compare two scope_components for inequality. These are not equal if |
| 200 | the two components' names are not equal. */ |
| 201 | |
| 202 | bool |
| 203 | operator!= (const scope_component &lhs, const scope_component &rhs) |
| 204 | { |
| 205 | return lhs.name != rhs.name; |
| 206 | } |
| 207 | |
| 208 | /* Compare two compile_scopes for equality. These are equal if they are both |
| 209 | contain the same number of components and each component is equal. */ |
| 210 | |
| 211 | bool |
| 212 | operator== (const compile_scope &lhs, const compile_scope &rhs) |
| 213 | { |
| 214 | if (lhs.size () != rhs.size ()) |
| 215 | return false; |
| 216 | |
| 217 | for (int i = 0; i < lhs.size (); ++i) |
| 218 | { |
| 219 | if (lhs[i] != rhs[i]) |
| 220 | return false; |
| 221 | } |
| 222 | |
| 223 | return true; |
| 224 | } |
| 225 | |
| 226 | /* Compare two compile_scopes for inequality. These are inequal if they |
| 227 | contain unequal number of elements or if any of the components are not |
| 228 | the same. */ |
| 229 | |
| 230 | bool |
| 231 | operator!= (const compile_scope &lhs, const compile_scope &rhs) |
| 232 | { |
| 233 | if (lhs.size () != rhs.size ()) |
| 234 | return true; |
| 235 | |
| 236 | for (int i = 0; i < lhs.size (); ++i) |
| 237 | { |
| 238 | if (lhs[i] != rhs[i]) |
| 239 | return true; |
| 240 | } |
| 241 | |
| 242 | return false; |
| 243 | } |
| 244 | |
| 245 | /* See description in compile-cplus.h. */ |
| 246 | |
| 247 | void |
| 248 | compile_cplus_instance::enter_scope (compile_scope &&new_scope) |
| 249 | { |
| 250 | bool must_push = m_scopes.empty () || m_scopes.back () != new_scope; |
| 251 | |
| 252 | new_scope.m_pushed = must_push; |
| 253 | |
| 254 | /* Save the new scope. */ |
| 255 | m_scopes.push_back (std::move (new_scope)); |
| 256 | |
| 257 | if (must_push) |
| 258 | { |
| 259 | if (debug_compile_cplus_scopes) |
| 260 | { |
| 261 | fprintf_unfiltered (gdb_stdlog, "entering new scope %s\n", |
| 262 | host_address_to_string (&m_scopes.back ())); |
| 263 | } |
| 264 | |
| 265 | /* Push the global namespace. */ |
| 266 | plugin ().push_namespace (""); |
| 267 | |
| 268 | /* Push all other namespaces. Note that we do not push the last |
| 269 | scope_component -- that's the actual type we are converting. */ |
| 270 | std::for_each |
| 271 | (m_scopes.back ().begin (), m_scopes.back ().end () - 1, |
| 272 | [this] (const scope_component &comp) |
| 273 | { |
| 274 | gdb_assert (SYMBOL_TYPE (comp.bsymbol.symbol)->code () |
| 275 | == TYPE_CODE_NAMESPACE); |
| 276 | |
| 277 | const char *ns = (comp.name == CP_ANONYMOUS_NAMESPACE_STR ? nullptr |
| 278 | : comp.name.c_str ()); |
| 279 | |
| 280 | this->plugin ().push_namespace (ns); |
| 281 | }); |
| 282 | } |
| 283 | else |
| 284 | { |
| 285 | if (debug_compile_cplus_scopes) |
| 286 | { |
| 287 | fprintf_unfiltered (gdb_stdlog, "staying in current scope -- " |
| 288 | "scopes are identical\n"); |
| 289 | } |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | /* See description in compile-cplus.h. */ |
| 294 | |
| 295 | void |
| 296 | compile_cplus_instance::leave_scope () |
| 297 | { |
| 298 | /* Get the current scope and remove it from the internal list of |
| 299 | scopes. */ |
| 300 | compile_scope current = m_scopes.back (); |
| 301 | |
| 302 | m_scopes.pop_back (); |
| 303 | |
| 304 | if (current.m_pushed) |
| 305 | { |
| 306 | if (debug_compile_cplus_scopes) |
| 307 | { |
| 308 | fprintf_unfiltered (gdb_stdlog, "leaving scope %s\n", |
| 309 | host_address_to_string (¤t)); |
| 310 | } |
| 311 | |
| 312 | /* Pop namespaces. */ |
| 313 | std::for_each |
| 314 | (current.begin (),current.end () - 1, |
| 315 | [this] (const scope_component &comp) { |
| 316 | gdb_assert (SYMBOL_TYPE (comp.bsymbol.symbol)->code () |
| 317 | == TYPE_CODE_NAMESPACE); |
| 318 | this->plugin ().pop_binding_level (comp.name.c_str ()); |
| 319 | }); |
| 320 | |
| 321 | /* Pop global namespace. */ |
| 322 | plugin ().pop_binding_level (""); |
| 323 | } |
| 324 | else |
| 325 | { |
| 326 | if (debug_compile_cplus_scopes) |
| 327 | fprintf_unfiltered (gdb_stdlog, |
| 328 | "identical scopes -- not leaving scope\n"); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | /* See description in compile-cplus.h. */ |
| 333 | |
| 334 | compile_scope |
| 335 | compile_cplus_instance::new_scope (const char *type_name, struct type *type) |
| 336 | { |
| 337 | /* Break the type name into components. If TYPE was defined in some |
| 338 | superclass, we do not process TYPE but process the enclosing type |
| 339 | instead. */ |
| 340 | compile_scope scope = type_name_to_scope (type_name, block ()); |
| 341 | |
| 342 | if (!scope.empty ()) |
| 343 | { |
| 344 | /* Get the name of the last component, which should be the |
| 345 | unqualified name of the type to process. */ |
| 346 | scope_component &comp = scope.back (); |
| 347 | |
| 348 | if (!types_equal (type, SYMBOL_TYPE (comp.bsymbol.symbol)) |
| 349 | && (m_scopes.empty () |
| 350 | || (m_scopes.back ().back ().bsymbol.symbol |
| 351 | != comp.bsymbol.symbol))) |
| 352 | { |
| 353 | /* The type is defined inside another class(es). Convert that |
| 354 | type instead of defining this type. */ |
| 355 | convert_type (SYMBOL_TYPE (comp.bsymbol.symbol)); |
| 356 | |
| 357 | /* If the original type (passed in to us) is defined in a nested |
| 358 | class, the previous call will give us that type's gcc_type. |
| 359 | Upper layers are expecting to get the original type's |
| 360 | gcc_type! */ |
| 361 | get_cached_type (type, &scope.m_nested_type); |
| 362 | return scope; |
| 363 | } |
| 364 | } |
| 365 | else |
| 366 | { |
| 367 | if (type->name () == nullptr) |
| 368 | { |
| 369 | /* Anonymous type */ |
| 370 | |
| 371 | /* We don't have a qualified name for this to look up, but |
| 372 | we need a scope. We have to assume, then, that it is the same |
| 373 | as the current scope, if any. */ |
| 374 | if (!m_scopes.empty ()) |
| 375 | { |
| 376 | scope = m_scopes.back (); |
| 377 | scope.m_pushed = false; |
| 378 | } |
| 379 | else |
| 380 | scope.push_back (scope_component ()); |
| 381 | } |
| 382 | else |
| 383 | { |
| 384 | scope_component comp |
| 385 | = { |
| 386 | decl_name (type->name ()).get (), |
| 387 | lookup_symbol (type->name (), block (), VAR_DOMAIN, nullptr) |
| 388 | }; |
| 389 | scope.push_back (comp); |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | /* There must be at least one component in the compile_scope. */ |
| 394 | gdb_assert (scope.size () > 0); |
| 395 | return scope; |
| 396 | } |
| 397 | |
| 398 | /* See description in compile-cplus.h. */ |
| 399 | |
| 400 | gcc_type |
| 401 | compile_cplus_instance::convert_reference_base |
| 402 | (gcc_type base, enum gcc_cp_ref_qualifiers rquals) |
| 403 | { |
| 404 | return this->plugin ().build_reference_type (base, rquals); |
| 405 | } |
| 406 | |
| 407 | /* Convert a reference type to its gcc representation. */ |
| 408 | |
| 409 | static gcc_type |
| 410 | compile_cplus_convert_reference (compile_cplus_instance *instance, |
| 411 | struct type *type) |
| 412 | { |
| 413 | gcc_type target = instance->convert_type (TYPE_TARGET_TYPE (type)); |
| 414 | |
| 415 | enum gcc_cp_ref_qualifiers quals = GCC_CP_REF_QUAL_NONE; |
| 416 | switch (type->code ()) |
| 417 | { |
| 418 | case TYPE_CODE_REF: |
| 419 | quals = GCC_CP_REF_QUAL_LVALUE; |
| 420 | break; |
| 421 | case TYPE_CODE_RVALUE_REF: |
| 422 | quals = GCC_CP_REF_QUAL_RVALUE; |
| 423 | break; |
| 424 | default: |
| 425 | gdb_assert_not_reached ("unexpected type code for reference type"); |
| 426 | } |
| 427 | |
| 428 | return instance->convert_reference_base (target, quals); |
| 429 | } |
| 430 | |
| 431 | /* See description in compile-cplus.h. */ |
| 432 | |
| 433 | gcc_type |
| 434 | compile_cplus_instance::convert_pointer_base(gcc_type target) |
| 435 | { |
| 436 | return plugin ().build_pointer_type (target); |
| 437 | } |
| 438 | |
| 439 | /* Convert a pointer type to its gcc representation. */ |
| 440 | |
| 441 | static gcc_type |
| 442 | compile_cplus_convert_pointer (compile_cplus_instance *instance, |
| 443 | struct type *type) |
| 444 | { |
| 445 | gcc_type target = instance->convert_type (TYPE_TARGET_TYPE (type)); |
| 446 | |
| 447 | return instance->convert_pointer_base (target); |
| 448 | } |
| 449 | |
| 450 | /* Convert an array type to its gcc representation. */ |
| 451 | |
| 452 | static gcc_type |
| 453 | compile_cplus_convert_array (compile_cplus_instance *instance, |
| 454 | struct type *type) |
| 455 | { |
| 456 | struct type *range = type->index_type (); |
| 457 | gcc_type element_type = instance->convert_type (TYPE_TARGET_TYPE (type)); |
| 458 | |
| 459 | if (range->bounds ()->low.kind () != PROP_CONST) |
| 460 | { |
| 461 | const char *s = _("array type with non-constant" |
| 462 | " lower bound is not supported"); |
| 463 | |
| 464 | return instance->plugin ().error (s); |
| 465 | } |
| 466 | |
| 467 | if (range->bounds ()->low.const_val () != 0) |
| 468 | { |
| 469 | const char *s = _("cannot convert array type with " |
| 470 | "non-zero lower bound to C"); |
| 471 | |
| 472 | return instance->plugin ().error (s); |
| 473 | } |
| 474 | |
| 475 | if (range->bounds ()->high.kind () == PROP_LOCEXPR |
| 476 | || range->bounds ()->high.kind () == PROP_LOCLIST) |
| 477 | { |
| 478 | if (type->is_vector ()) |
| 479 | { |
| 480 | const char *s = _("variably-sized vector type is not supported"); |
| 481 | |
| 482 | return instance->plugin ().error (s); |
| 483 | } |
| 484 | |
| 485 | std::string upper_bound |
| 486 | = c_get_range_decl_name (&range->bounds ()->high); |
| 487 | return instance->plugin ().build_vla_array_type (element_type, |
| 488 | upper_bound.c_str ()); |
| 489 | } |
| 490 | else |
| 491 | { |
| 492 | LONGEST low_bound, high_bound, count; |
| 493 | |
| 494 | if (!get_array_bounds (type, &low_bound, &high_bound)) |
| 495 | count = -1; |
| 496 | else |
| 497 | { |
| 498 | gdb_assert (low_bound == 0); /* Ensured above. */ |
| 499 | count = high_bound + 1; |
| 500 | } |
| 501 | |
| 502 | if (type->is_vector ()) |
| 503 | return instance->plugin ().build_vector_type (element_type, count); |
| 504 | |
| 505 | return instance->plugin ().build_array_type (element_type, count); |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | /* Convert a typedef of TYPE. If not GCC_CP_ACCESS_NONE, NESTED_ACCESS |
| 510 | will define the accessibility of the typedef definition in its |
| 511 | containing class. */ |
| 512 | |
| 513 | static gcc_type |
| 514 | compile_cplus_convert_typedef (compile_cplus_instance *instance, |
| 515 | struct type *type, |
| 516 | enum gcc_cp_symbol_kind nested_access) |
| 517 | { |
| 518 | compile_scope scope = instance->new_scope (type->name (), type); |
| 519 | |
| 520 | if (scope.nested_type () != GCC_TYPE_NONE) |
| 521 | return scope.nested_type (); |
| 522 | |
| 523 | gdb::unique_xmalloc_ptr<char> name |
| 524 | = compile_cplus_instance::decl_name (type->name ()); |
| 525 | |
| 526 | /* Make sure the scope for this type has been pushed. */ |
| 527 | instance->enter_scope (std::move (scope)); |
| 528 | |
| 529 | /* Convert the typedef's real type. */ |
| 530 | gcc_type typedef_type = instance->convert_type (check_typedef (type)); |
| 531 | |
| 532 | instance->plugin ().build_decl ("typedef", name.get (), |
| 533 | GCC_CP_SYMBOL_TYPEDEF | nested_access, |
| 534 | typedef_type, 0, 0, nullptr, 0); |
| 535 | |
| 536 | /* Completed this scope. */ |
| 537 | instance->leave_scope (); |
| 538 | return typedef_type; |
| 539 | } |
| 540 | |
| 541 | /* Convert types defined in TYPE. */ |
| 542 | |
| 543 | static void |
| 544 | compile_cplus_convert_type_defns (compile_cplus_instance *instance, |
| 545 | struct type *type) |
| 546 | { |
| 547 | int i; |
| 548 | enum gcc_cp_symbol_kind accessibility; |
| 549 | |
| 550 | /* Convert typedefs. */ |
| 551 | for (i = 0; i < TYPE_TYPEDEF_FIELD_COUNT (type); ++i) |
| 552 | { |
| 553 | if (TYPE_TYPEDEF_FIELD_PROTECTED (type, i)) |
| 554 | accessibility = GCC_CP_ACCESS_PROTECTED; |
| 555 | else if (TYPE_TYPEDEF_FIELD_PRIVATE (type, i)) |
| 556 | accessibility = GCC_CP_ACCESS_PRIVATE; |
| 557 | else |
| 558 | accessibility = GCC_CP_ACCESS_PUBLIC; |
| 559 | instance->convert_type (TYPE_TYPEDEF_FIELD_TYPE (type, i), accessibility); |
| 560 | } |
| 561 | |
| 562 | /* Convert nested types. */ |
| 563 | for (i = 0; i < TYPE_NESTED_TYPES_COUNT (type); ++i) |
| 564 | { |
| 565 | if (TYPE_NESTED_TYPES_FIELD_PROTECTED (type, i)) |
| 566 | accessibility = GCC_CP_ACCESS_PROTECTED; |
| 567 | else if (TYPE_NESTED_TYPES_FIELD_PRIVATE (type, i)) |
| 568 | accessibility = GCC_CP_ACCESS_PRIVATE; |
| 569 | else |
| 570 | accessibility = GCC_CP_ACCESS_PUBLIC; |
| 571 | instance->convert_type (TYPE_NESTED_TYPES_FIELD_TYPE (type, i), |
| 572 | accessibility); |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | /* Convert data members defined in TYPE, which should be struct/class/union |
| 577 | with gcc_type COMP_TYPE. */ |
| 578 | |
| 579 | static void |
| 580 | compile_cplus_convert_struct_or_union_members |
| 581 | (compile_cplus_instance *instance, struct type *type, gcc_type comp_type) |
| 582 | { |
| 583 | for (int i = TYPE_N_BASECLASSES (type); i < type->num_fields (); ++i) |
| 584 | { |
| 585 | const char *field_name = TYPE_FIELD_NAME (type, i); |
| 586 | |
| 587 | if (TYPE_FIELD_IGNORE (type, i) |
| 588 | || TYPE_FIELD_ARTIFICIAL (type, i)) |
| 589 | continue; |
| 590 | |
| 591 | /* GDB records unnamed/anonymous fields with empty string names. */ |
| 592 | if (*field_name == '\0') |
| 593 | field_name = nullptr; |
| 594 | |
| 595 | gcc_type field_type |
| 596 | = instance->convert_type (type->field (i).type ()); |
| 597 | |
| 598 | if (field_is_static (&type->field (i))) |
| 599 | { |
| 600 | CORE_ADDR physaddr; |
| 601 | |
| 602 | switch (TYPE_FIELD_LOC_KIND (type, i)) |
| 603 | { |
| 604 | case FIELD_LOC_KIND_PHYSADDR: |
| 605 | { |
| 606 | physaddr = TYPE_FIELD_STATIC_PHYSADDR (type, i); |
| 607 | |
| 608 | instance->plugin ().build_decl |
| 609 | ("field physaddr", field_name, |
| 610 | (GCC_CP_SYMBOL_VARIABLE | get_field_access_flag (type, i)), |
| 611 | field_type, nullptr, physaddr, nullptr, 0); |
| 612 | } |
| 613 | break; |
| 614 | |
| 615 | case FIELD_LOC_KIND_PHYSNAME: |
| 616 | { |
| 617 | const char *physname = TYPE_FIELD_STATIC_PHYSNAME (type, i); |
| 618 | struct block_symbol sym |
| 619 | = lookup_symbol (physname, instance->block (), |
| 620 | VAR_DOMAIN, nullptr); |
| 621 | |
| 622 | if (sym.symbol == nullptr) |
| 623 | { |
| 624 | /* We didn't actually find the symbol. There's little |
| 625 | we can do but ignore this member. */ |
| 626 | continue; |
| 627 | } |
| 628 | const char *filename = symbol_symtab (sym.symbol)->filename; |
| 629 | unsigned int line = SYMBOL_LINE (sym.symbol); |
| 630 | |
| 631 | physaddr = SYMBOL_VALUE_ADDRESS (sym.symbol); |
| 632 | instance->plugin ().build_decl |
| 633 | ("field physname", field_name, |
| 634 | (GCC_CP_SYMBOL_VARIABLE| get_field_access_flag (type, i)), |
| 635 | field_type, nullptr, physaddr, filename, line); |
| 636 | } |
| 637 | break; |
| 638 | |
| 639 | default: |
| 640 | gdb_assert_not_reached |
| 641 | ("unexpected static field location kind"); |
| 642 | } |
| 643 | } |
| 644 | else |
| 645 | { |
| 646 | unsigned long bitsize = TYPE_FIELD_BITSIZE (type, i); |
| 647 | enum gcc_cp_symbol_kind field_flags = GCC_CP_SYMBOL_FIELD |
| 648 | | get_field_access_flag (type, i); |
| 649 | |
| 650 | if (bitsize == 0) |
| 651 | bitsize = 8 * TYPE_LENGTH (type->field (i).type ()); |
| 652 | |
| 653 | instance->plugin ().build_field |
| 654 | (field_name, field_type, field_flags, bitsize, |
| 655 | TYPE_FIELD_BITPOS (type, i)); |
| 656 | } |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | /* Convert a method type to its gcc representation. */ |
| 661 | |
| 662 | static gcc_type |
| 663 | compile_cplus_convert_method (compile_cplus_instance *instance, |
| 664 | struct type *parent_type, |
| 665 | struct type *method_type) |
| 666 | { |
| 667 | /* Get the actual function type of the method, the corresponding class's |
| 668 | type and corresponding qualifier flags. */ |
| 669 | gcc_type func_type = compile_cplus_convert_func (instance, method_type, true); |
| 670 | gcc_type class_type = instance->convert_type (parent_type); |
| 671 | gcc_cp_qualifiers_flags quals = 0; |
| 672 | |
| 673 | if (TYPE_CONST (method_type)) |
| 674 | quals |= GCC_CP_QUALIFIER_CONST; |
| 675 | if (TYPE_VOLATILE (method_type)) |
| 676 | quals |= GCC_CP_QUALIFIER_VOLATILE; |
| 677 | if (TYPE_RESTRICT (method_type)) |
| 678 | quals |= GCC_CP_QUALIFIER_RESTRICT; |
| 679 | |
| 680 | /* Not yet implemented. */ |
| 681 | gcc_cp_ref_qualifiers_flags rquals = GCC_CP_REF_QUAL_NONE; |
| 682 | |
| 683 | return instance->plugin ().build_method_type |
| 684 | (class_type, func_type, quals.raw (), rquals.raw ()); |
| 685 | } |
| 686 | |
| 687 | /* Convert a member or method pointer represented by TYPE. */ |
| 688 | |
| 689 | static gcc_type |
| 690 | compile_cplus_convert_memberptr (compile_cplus_instance *instance, |
| 691 | struct type *type) |
| 692 | { |
| 693 | struct type *containing_class = TYPE_SELF_TYPE (type); |
| 694 | |
| 695 | if (containing_class == nullptr) |
| 696 | return GCC_TYPE_NONE; |
| 697 | |
| 698 | gcc_type class_type = instance->convert_type (containing_class); |
| 699 | gcc_type member_type |
| 700 | = instance->convert_type (TYPE_TARGET_TYPE (type)); |
| 701 | |
| 702 | return instance->plugin ().build_pointer_to_member_type |
| 703 | (class_type, member_type); |
| 704 | } |
| 705 | |
| 706 | /* Convert all methods defined in TYPE, which should be a class/struct/union |
| 707 | with gcc_type CLASS_TYPE. */ |
| 708 | |
| 709 | static void |
| 710 | compile_cplus_convert_struct_or_union_methods (compile_cplus_instance *instance, |
| 711 | struct type *type, |
| 712 | gcc_type class_type) |
| 713 | { |
| 714 | for (int i = 0; i < TYPE_NFN_FIELDS (type); ++i) |
| 715 | { |
| 716 | struct fn_field *methods = TYPE_FN_FIELDLIST1 (type, i); |
| 717 | gdb::unique_xmalloc_ptr<char> overloaded_name |
| 718 | = compile_cplus_instance::decl_name (TYPE_FN_FIELDLIST_NAME (type, i)); |
| 719 | |
| 720 | /* Loop through the fieldlist, adding decls to the compiler's |
| 721 | representation of the class. */ |
| 722 | for (int j = 0; j < TYPE_FN_FIELDLIST_LENGTH (type, i); ++j) |
| 723 | { |
| 724 | /* Skip artificial methods. */ |
| 725 | if (TYPE_FN_FIELD_ARTIFICIAL (methods, j)) |
| 726 | continue; |
| 727 | |
| 728 | gcc_cp_symbol_kind_flags sym_kind = GCC_CP_SYMBOL_FUNCTION; |
| 729 | gcc_type method_type; |
| 730 | struct block_symbol sym |
| 731 | = lookup_symbol (TYPE_FN_FIELD_PHYSNAME (methods, j), |
| 732 | instance->block (), VAR_DOMAIN, nullptr); |
| 733 | |
| 734 | if (sym.symbol == nullptr) |
| 735 | { |
| 736 | if (TYPE_FN_FIELD_VIRTUAL_P (methods, j)) |
| 737 | { |
| 738 | /* This is beyond hacky, and is really only a workaround for |
| 739 | detecting pure virtual methods. */ |
| 740 | method_type = compile_cplus_convert_method |
| 741 | (instance, type, TYPE_FN_FIELD_TYPE (methods, j)); |
| 742 | |
| 743 | instance->plugin ().build_decl |
| 744 | ("pure virtual method", overloaded_name.get (), |
| 745 | (sym_kind |
| 746 | | get_method_access_flag (type, i, j) |
| 747 | | GCC_CP_FLAG_VIRTUAL_FUNCTION |
| 748 | | GCC_CP_FLAG_PURE_VIRTUAL_FUNCTION).raw (), |
| 749 | method_type, nullptr, 0, nullptr, 0); |
| 750 | continue; |
| 751 | } |
| 752 | |
| 753 | /* This can happen if we have a DW_AT_declaration DIE |
| 754 | for the method, but no "definition"-type DIE (with |
| 755 | DW_AT_specification referencing the decl DIE), i.e., |
| 756 | the compiler has probably optimized the method away. |
| 757 | |
| 758 | In this case, all we can hope to do is issue a warning |
| 759 | to the user letting him know. If the user has not actually |
| 760 | requested using this method, things should still work. */ |
| 761 | warning (_("Method %s appears to be optimized out.\n" |
| 762 | "All references to this method will be undefined."), |
| 763 | TYPE_FN_FIELD_PHYSNAME (methods, j)); |
| 764 | continue; |
| 765 | } |
| 766 | |
| 767 | const char *filename = symbol_symtab (sym.symbol)->filename; |
| 768 | unsigned int line = SYMBOL_LINE (sym.symbol); |
| 769 | CORE_ADDR address = BLOCK_START (SYMBOL_BLOCK_VALUE (sym.symbol)); |
| 770 | const char *kind; |
| 771 | |
| 772 | if (TYPE_FN_FIELD_STATIC_P (methods, j)) |
| 773 | { |
| 774 | kind = "static method"; |
| 775 | method_type = compile_cplus_convert_func |
| 776 | (instance, TYPE_FN_FIELD_TYPE (methods, j), true); |
| 777 | } |
| 778 | else |
| 779 | { |
| 780 | kind = "method"; |
| 781 | method_type = (compile_cplus_convert_method |
| 782 | (instance, type, TYPE_FN_FIELD_TYPE (methods, j))); |
| 783 | } |
| 784 | |
| 785 | if (TYPE_FN_FIELD_VIRTUAL_P (methods, j)) |
| 786 | sym_kind |= GCC_CP_FLAG_VIRTUAL_FUNCTION; |
| 787 | |
| 788 | instance->plugin ().build_decl |
| 789 | (kind, overloaded_name.get (), |
| 790 | (sym_kind | get_method_access_flag (type, i, j)).raw (), |
| 791 | method_type, nullptr, address, filename, line); |
| 792 | } |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | /* Convert a struct or union type to its gcc representation. If this type |
| 797 | was defined in another type, NESTED_ACCESS should indicate the |
| 798 | accessibility of this type. */ |
| 799 | |
| 800 | static gcc_type |
| 801 | compile_cplus_convert_struct_or_union (compile_cplus_instance *instance, |
| 802 | struct type *type, |
| 803 | enum gcc_cp_symbol_kind nested_access) |
| 804 | { |
| 805 | const char *filename = nullptr; |
| 806 | unsigned short line = 0; |
| 807 | |
| 808 | /* Get the decl name of this type. */ |
| 809 | gdb::unique_xmalloc_ptr<char> name |
| 810 | = compile_cplus_instance::decl_name (type->name ()); |
| 811 | |
| 812 | /* Create a new scope for TYPE. */ |
| 813 | compile_scope scope = instance->new_scope (type->name (), type); |
| 814 | |
| 815 | if (scope.nested_type () != GCC_TYPE_NONE) |
| 816 | { |
| 817 | /* The type requested was actually defined inside another type, |
| 818 | such as a nested class definition. Return that type. */ |
| 819 | return scope.nested_type (); |
| 820 | } |
| 821 | |
| 822 | /* Push all scopes. */ |
| 823 | instance->enter_scope (std::move (scope)); |
| 824 | |
| 825 | /* First we create the resulting type and enter it into our hash |
| 826 | table. This lets recursive types work. */ |
| 827 | |
| 828 | gcc_decl resuld; |
| 829 | if (type->code () == TYPE_CODE_STRUCT) |
| 830 | { |
| 831 | const char *what = TYPE_DECLARED_CLASS (type) ? "class" : "struct"; |
| 832 | |
| 833 | resuld = instance->plugin ().build_decl |
| 834 | (what, name.get (), (GCC_CP_SYMBOL_CLASS | nested_access |
| 835 | | (TYPE_DECLARED_CLASS (type) |
| 836 | ? GCC_CP_FLAG_CLASS_NOFLAG |
| 837 | : GCC_CP_FLAG_CLASS_IS_STRUCT)), |
| 838 | 0, nullptr, 0, filename, line); |
| 839 | } |
| 840 | else |
| 841 | { |
| 842 | gdb_assert (type->code () == TYPE_CODE_UNION); |
| 843 | resuld = instance->plugin ().build_decl |
| 844 | ("union", name.get (), GCC_CP_SYMBOL_UNION | nested_access, |
| 845 | 0, nullptr, 0, filename, line); |
| 846 | } |
| 847 | |
| 848 | gcc_type result; |
| 849 | if (type->code () == TYPE_CODE_STRUCT) |
| 850 | { |
| 851 | int num_baseclasses = TYPE_N_BASECLASSES (type); |
| 852 | std::vector<gcc_type> elements (num_baseclasses); |
| 853 | std::vector<enum gcc_cp_symbol_kind> flags (num_baseclasses); |
| 854 | |
| 855 | struct gcc_vbase_array bases {}; |
| 856 | bases.elements = elements.data (); |
| 857 | bases.flags = flags.data (); |
| 858 | bases.n_elements = num_baseclasses; |
| 859 | |
| 860 | for (int i = 0; i < num_baseclasses; ++i) |
| 861 | { |
| 862 | struct type *base_type = TYPE_BASECLASS (type, i); |
| 863 | |
| 864 | bases.flags[i] = (GCC_CP_SYMBOL_BASECLASS |
| 865 | | get_field_access_flag (type, i) |
| 866 | | (BASETYPE_VIA_VIRTUAL (type, i) |
| 867 | ? GCC_CP_FLAG_BASECLASS_VIRTUAL |
| 868 | : GCC_CP_FLAG_BASECLASS_NOFLAG)); |
| 869 | bases.elements[i] = instance->convert_type (base_type); |
| 870 | } |
| 871 | |
| 872 | result = instance->plugin ().start_class_type |
| 873 | (name.get (), resuld, &bases, filename, line); |
| 874 | } |
| 875 | else |
| 876 | { |
| 877 | gdb_assert (type->code () == TYPE_CODE_UNION); |
| 878 | result = instance->plugin ().start_class_type |
| 879 | (name.get (), resuld, nullptr, filename, line); |
| 880 | } |
| 881 | |
| 882 | instance->insert_type (type, result); |
| 883 | |
| 884 | /* Add definitions. */ |
| 885 | compile_cplus_convert_type_defns (instance, type); |
| 886 | |
| 887 | /* Add methods. */ |
| 888 | compile_cplus_convert_struct_or_union_methods (instance, type, result); |
| 889 | |
| 890 | /* Add members. */ |
| 891 | compile_cplus_convert_struct_or_union_members (instance, type, result); |
| 892 | |
| 893 | /* All finished. */ |
| 894 | instance->plugin ().finish_class_type (name.get (), TYPE_LENGTH (type)); |
| 895 | |
| 896 | /* Pop all scopes. */ |
| 897 | instance->leave_scope (); |
| 898 | return result; |
| 899 | } |
| 900 | |
| 901 | /* Convert an enum type to its gcc representation. If this type |
| 902 | was defined in another type, NESTED_ACCESS should indicate the |
| 903 | accessibility of this type.*/ |
| 904 | |
| 905 | static gcc_type |
| 906 | compile_cplus_convert_enum (compile_cplus_instance *instance, struct type *type, |
| 907 | enum gcc_cp_symbol_kind nested_access) |
| 908 | { |
| 909 | bool scoped_enum_p = false; |
| 910 | |
| 911 | /* Create a new scope for this type. */ |
| 912 | compile_scope scope = instance->new_scope (type->name (), type); |
| 913 | |
| 914 | if (scope.nested_type () != GCC_TYPE_NONE) |
| 915 | { |
| 916 | /* The type requested was actually defined inside another type, |
| 917 | such as a nested class definition. Return that type. */ |
| 918 | return scope.nested_type (); |
| 919 | } |
| 920 | |
| 921 | gdb::unique_xmalloc_ptr<char> name |
| 922 | = compile_cplus_instance::decl_name (type->name ()); |
| 923 | |
| 924 | /* Push all scopes. */ |
| 925 | instance->enter_scope (std::move (scope)); |
| 926 | |
| 927 | gcc_type int_type |
| 928 | = instance->plugin ().get_int_type (type->is_unsigned (), |
| 929 | TYPE_LENGTH (type), nullptr); |
| 930 | gcc_type result |
| 931 | = instance->plugin ().start_enum_type (name.get (), int_type, |
| 932 | GCC_CP_SYMBOL_ENUM | nested_access |
| 933 | | (scoped_enum_p |
| 934 | ? GCC_CP_FLAG_ENUM_SCOPED |
| 935 | : GCC_CP_FLAG_ENUM_NOFLAG), |
| 936 | nullptr, 0); |
| 937 | for (int i = 0; i < type->num_fields (); ++i) |
| 938 | { |
| 939 | gdb::unique_xmalloc_ptr<char> fname |
| 940 | = compile_cplus_instance::decl_name (TYPE_FIELD_NAME (type, i)); |
| 941 | |
| 942 | if (TYPE_FIELD_LOC_KIND (type, i) != FIELD_LOC_KIND_ENUMVAL |
| 943 | || fname == nullptr) |
| 944 | continue; |
| 945 | |
| 946 | instance->plugin ().build_enum_constant (result, fname.get (), |
| 947 | TYPE_FIELD_ENUMVAL (type, i)); |
| 948 | } |
| 949 | |
| 950 | /* Finish enum definition and pop scopes. */ |
| 951 | instance->plugin ().finish_enum_type (result); |
| 952 | instance->leave_scope (); |
| 953 | return result; |
| 954 | } |
| 955 | |
| 956 | /* Convert a function type to its gcc representation. This function does |
| 957 | not deal with function templates. */ |
| 958 | |
| 959 | static gcc_type |
| 960 | compile_cplus_convert_func (compile_cplus_instance *instance, |
| 961 | struct type *type, bool strip_artificial) |
| 962 | { |
| 963 | int is_varargs = type->has_varargs (); |
| 964 | struct type *target_type = TYPE_TARGET_TYPE (type); |
| 965 | |
| 966 | /* Functions with no debug info have no return type. Ideally we'd |
| 967 | want to fallback to the type of the cast just before the |
| 968 | function, like GDB's built-in expression parser, but we don't |
| 969 | have access to that type here. For now, fallback to int, like |
| 970 | GDB's parser used to do. */ |
| 971 | if (target_type == nullptr) |
| 972 | { |
| 973 | if (type->is_objfile_owned ()) |
| 974 | target_type = objfile_type (type->objfile_owner ())->builtin_int; |
| 975 | else |
| 976 | target_type = builtin_type (type->arch_owner ())->builtin_int; |
| 977 | warning (_("function has unknown return type; assuming int")); |
| 978 | } |
| 979 | |
| 980 | /* This approach means we can't make self-referential function |
| 981 | types. Those are impossible in C, though. */ |
| 982 | gcc_type return_type = instance->convert_type (target_type); |
| 983 | |
| 984 | std::vector<gcc_type> elements (type->num_fields ()); |
| 985 | struct gcc_type_array array = { type->num_fields (), elements.data () }; |
| 986 | int artificials = 0; |
| 987 | for (int i = 0; i < type->num_fields (); ++i) |
| 988 | { |
| 989 | if (strip_artificial && TYPE_FIELD_ARTIFICIAL (type, i)) |
| 990 | { |
| 991 | --array.n_elements; |
| 992 | ++artificials; |
| 993 | } |
| 994 | else |
| 995 | { |
| 996 | array.elements[i - artificials] |
| 997 | = instance->convert_type (type->field (i).type ()); |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | /* We omit setting the argument types to `void' to be a little flexible |
| 1002 | with some minsyms like printf (compile-cplus.exp has examples). */ |
| 1003 | gcc_type result = instance->plugin ().build_function_type |
| 1004 | (return_type, &array, is_varargs); |
| 1005 | return result; |
| 1006 | } |
| 1007 | |
| 1008 | /* Convert an integer type to its gcc representation. */ |
| 1009 | |
| 1010 | static gcc_type |
| 1011 | compile_cplus_convert_int (compile_cplus_instance *instance, struct type *type) |
| 1012 | { |
| 1013 | if (type->has_no_signedness ()) |
| 1014 | { |
| 1015 | gdb_assert (TYPE_LENGTH (type) == 1); |
| 1016 | return instance->plugin ().get_char_type (); |
| 1017 | } |
| 1018 | |
| 1019 | return instance->plugin ().get_int_type |
| 1020 | (type->is_unsigned (), TYPE_LENGTH (type), type->name ()); |
| 1021 | } |
| 1022 | |
| 1023 | /* Convert a floating-point type to its gcc representation. */ |
| 1024 | |
| 1025 | static gcc_type |
| 1026 | compile_cplus_convert_float (compile_cplus_instance *instance, |
| 1027 | struct type *type) |
| 1028 | { |
| 1029 | return instance->plugin ().get_float_type |
| 1030 | (TYPE_LENGTH (type), type->name ()); |
| 1031 | } |
| 1032 | |
| 1033 | /* Convert the 'void' type to its gcc representation. */ |
| 1034 | |
| 1035 | static gcc_type |
| 1036 | compile_cplus_convert_void (compile_cplus_instance *instance, struct type *type) |
| 1037 | { |
| 1038 | return instance->plugin ().get_void_type (); |
| 1039 | } |
| 1040 | |
| 1041 | /* Convert a boolean type to its gcc representation. */ |
| 1042 | |
| 1043 | static gcc_type |
| 1044 | compile_cplus_convert_bool (compile_cplus_instance *instance, struct type *type) |
| 1045 | { |
| 1046 | return instance->plugin ().get_bool_type (); |
| 1047 | } |
| 1048 | |
| 1049 | /* See description in compile-cplus.h. */ |
| 1050 | |
| 1051 | gcc_type |
| 1052 | compile_cplus_instance::convert_qualified_base (gcc_type base, |
| 1053 | gcc_cp_qualifiers_flags quals) |
| 1054 | { |
| 1055 | gcc_type result = base; |
| 1056 | |
| 1057 | if (quals != 0) |
| 1058 | result = plugin ().build_qualified_type (base, quals.raw ()); |
| 1059 | |
| 1060 | return result; |
| 1061 | } |
| 1062 | |
| 1063 | /* See description in compile-cplus.h. */ |
| 1064 | |
| 1065 | static gcc_type |
| 1066 | compile_cplus_convert_qualified (compile_cplus_instance *instance, |
| 1067 | struct type *type) |
| 1068 | { |
| 1069 | struct type *unqual = make_unqualified_type (type); |
| 1070 | gcc_cp_qualifiers_flags quals = (enum gcc_cp_qualifiers) 0; |
| 1071 | gcc_type unqual_converted = instance->convert_type (unqual); |
| 1072 | |
| 1073 | if (TYPE_CONST (type)) |
| 1074 | quals |= GCC_CP_QUALIFIER_CONST; |
| 1075 | if (TYPE_VOLATILE (type)) |
| 1076 | quals |= GCC_CP_QUALIFIER_VOLATILE; |
| 1077 | if (TYPE_RESTRICT (type)) |
| 1078 | quals |= GCC_CP_QUALIFIER_RESTRICT; |
| 1079 | |
| 1080 | return instance->convert_qualified_base (unqual_converted, quals); |
| 1081 | } |
| 1082 | |
| 1083 | /* Convert a complex type to its gcc representation. */ |
| 1084 | |
| 1085 | static gcc_type |
| 1086 | compile_cplus_convert_complex (compile_cplus_instance *instance, |
| 1087 | struct type *type) |
| 1088 | { |
| 1089 | gcc_type base = instance->convert_type (TYPE_TARGET_TYPE (type)); |
| 1090 | |
| 1091 | return instance->plugin ().build_complex_type (base); |
| 1092 | } |
| 1093 | |
| 1094 | /* Convert a namespace of TYPE. */ |
| 1095 | |
| 1096 | static gcc_type |
| 1097 | compile_cplus_convert_namespace (compile_cplus_instance *instance, |
| 1098 | struct type *type) |
| 1099 | { |
| 1100 | compile_scope scope = instance->new_scope (type->name (), type); |
| 1101 | gdb::unique_xmalloc_ptr<char> name |
| 1102 | = compile_cplus_instance::decl_name (type->name ()); |
| 1103 | |
| 1104 | /* Push scope. */ |
| 1105 | instance->enter_scope (std::move (scope)); |
| 1106 | |
| 1107 | /* Convert this namespace. */ |
| 1108 | instance->plugin ().push_namespace (name.get ()); |
| 1109 | instance->plugin ().pop_binding_level (name.get ()); |
| 1110 | |
| 1111 | /* Pop scope. */ |
| 1112 | instance->leave_scope (); |
| 1113 | |
| 1114 | /* Namespaces are non-cacheable types. */ |
| 1115 | return GCC_TYPE_NONE; |
| 1116 | } |
| 1117 | |
| 1118 | /* A helper function which knows how to convert most types from their |
| 1119 | gdb representation to the corresponding gcc form. This examines |
| 1120 | the TYPE and dispatches to the appropriate conversion function. It |
| 1121 | returns the gcc type. |
| 1122 | |
| 1123 | If the type was defined in another type, NESTED_ACCESS should indicate the |
| 1124 | accessibility of this type. */ |
| 1125 | |
| 1126 | static gcc_type |
| 1127 | convert_type_cplus_basic (compile_cplus_instance *instance, |
| 1128 | struct type *type, |
| 1129 | enum gcc_cp_symbol_kind nested_access) |
| 1130 | { |
| 1131 | /* If we are converting a qualified type, first convert the |
| 1132 | unqualified type and then apply the qualifiers. */ |
| 1133 | if ((type->instance_flags () & (TYPE_INSTANCE_FLAG_CONST |
| 1134 | | TYPE_INSTANCE_FLAG_VOLATILE |
| 1135 | | TYPE_INSTANCE_FLAG_RESTRICT)) != 0) |
| 1136 | return compile_cplus_convert_qualified (instance, type); |
| 1137 | |
| 1138 | switch (type->code ()) |
| 1139 | { |
| 1140 | case TYPE_CODE_REF: |
| 1141 | case TYPE_CODE_RVALUE_REF: |
| 1142 | return compile_cplus_convert_reference (instance, type); |
| 1143 | |
| 1144 | case TYPE_CODE_PTR: |
| 1145 | return compile_cplus_convert_pointer (instance, type); |
| 1146 | |
| 1147 | case TYPE_CODE_ARRAY: |
| 1148 | return compile_cplus_convert_array (instance, type); |
| 1149 | |
| 1150 | case TYPE_CODE_STRUCT: |
| 1151 | case TYPE_CODE_UNION: |
| 1152 | return |
| 1153 | compile_cplus_convert_struct_or_union (instance, type, nested_access); |
| 1154 | |
| 1155 | case TYPE_CODE_ENUM: |
| 1156 | return compile_cplus_convert_enum (instance, type, nested_access); |
| 1157 | |
| 1158 | case TYPE_CODE_FUNC: |
| 1159 | return compile_cplus_convert_func (instance, type, false); |
| 1160 | |
| 1161 | case TYPE_CODE_METHOD: |
| 1162 | return |
| 1163 | compile_cplus_convert_method (instance, TYPE_SELF_TYPE (type), type); |
| 1164 | |
| 1165 | case TYPE_CODE_MEMBERPTR: |
| 1166 | case TYPE_CODE_METHODPTR: |
| 1167 | return compile_cplus_convert_memberptr (instance, type); |
| 1168 | break; |
| 1169 | |
| 1170 | case TYPE_CODE_INT: |
| 1171 | return compile_cplus_convert_int (instance, type); |
| 1172 | |
| 1173 | case TYPE_CODE_FLT: |
| 1174 | return compile_cplus_convert_float (instance, type); |
| 1175 | |
| 1176 | case TYPE_CODE_VOID: |
| 1177 | return compile_cplus_convert_void (instance, type); |
| 1178 | |
| 1179 | case TYPE_CODE_BOOL: |
| 1180 | return compile_cplus_convert_bool (instance, type); |
| 1181 | |
| 1182 | case TYPE_CODE_COMPLEX: |
| 1183 | return compile_cplus_convert_complex (instance, type); |
| 1184 | |
| 1185 | case TYPE_CODE_NAMESPACE: |
| 1186 | return compile_cplus_convert_namespace (instance, type); |
| 1187 | |
| 1188 | case TYPE_CODE_TYPEDEF: |
| 1189 | return compile_cplus_convert_typedef (instance, type, nested_access); |
| 1190 | |
| 1191 | default: |
| 1192 | break; |
| 1193 | } |
| 1194 | |
| 1195 | std::string s = string_printf (_("unhandled TYPE_CODE %d"), |
| 1196 | type->code ()); |
| 1197 | |
| 1198 | return instance->plugin ().error (s.c_str ()); |
| 1199 | } |
| 1200 | |
| 1201 | gcc_type |
| 1202 | compile_cplus_instance::convert_type (struct type *type, |
| 1203 | enum gcc_cp_symbol_kind nested_access) |
| 1204 | { |
| 1205 | /* Check if TYPE has already been converted. */ |
| 1206 | gcc_type result; |
| 1207 | if (get_cached_type (type, &result)) |
| 1208 | return result; |
| 1209 | |
| 1210 | /* It is the first time this type has been seen -- convert it |
| 1211 | and cache it, if appropriate.. */ |
| 1212 | result = convert_type_cplus_basic (this, type, nested_access); |
| 1213 | if (result != GCC_TYPE_NONE) |
| 1214 | insert_type (type, result); |
| 1215 | return result; |
| 1216 | } |
| 1217 | |
| 1218 | void |
| 1219 | compile_cplus_instance::gcc_cplus_enter_scope |
| 1220 | (void *datum, struct gcc_cp_context *gcc_context) |
| 1221 | { |
| 1222 | } |
| 1223 | |
| 1224 | void |
| 1225 | compile_cplus_instance::gcc_cplus_leave_scope |
| 1226 | (void *datum, struct gcc_cp_context *gcc_context) |
| 1227 | { |
| 1228 | } |
| 1229 | |
| 1230 | \f |
| 1231 | |
| 1232 | /* Plug-in forwards. */ |
| 1233 | |
| 1234 | /* C++ plug-in wrapper. */ |
| 1235 | |
| 1236 | /* A result printer for plug-in calls that return a gcc_type or |
| 1237 | gcc_decl. */ |
| 1238 | |
| 1239 | static void |
| 1240 | compile_cplus_debug_output_1 (ULONGEST arg) |
| 1241 | { |
| 1242 | fprintf_unfiltered (gdb_stdlog, "%s", pulongest (arg)); |
| 1243 | } |
| 1244 | |
| 1245 | static void |
| 1246 | compile_cplus_debug_output_1 (const char *arg) |
| 1247 | { |
| 1248 | if (arg == nullptr) |
| 1249 | fputs_unfiltered ("NULL", gdb_stdlog); |
| 1250 | else |
| 1251 | fputs_unfiltered (arg, gdb_stdlog); |
| 1252 | } |
| 1253 | |
| 1254 | static void |
| 1255 | compile_cplus_debug_output () |
| 1256 | { |
| 1257 | } |
| 1258 | |
| 1259 | template <typename T> |
| 1260 | static void |
| 1261 | compile_cplus_debug_output_1 (const T *arg) |
| 1262 | { |
| 1263 | } |
| 1264 | |
| 1265 | template <typename T, typename... Targs> |
| 1266 | static void |
| 1267 | compile_cplus_debug_output (T arg, Targs... Args) |
| 1268 | { |
| 1269 | compile_cplus_debug_output_1 (arg); |
| 1270 | fputc_unfiltered (' ', gdb_stdlog); |
| 1271 | compile_cplus_debug_output (Args...); |
| 1272 | } |
| 1273 | |
| 1274 | #define FORWARD(OP,...) m_context->cp_ops->OP(m_context, ##__VA_ARGS__) |
| 1275 | #define OUTPUT_DEBUG_RESULT(R) \ |
| 1276 | if (debug_compile_cplus_types) \ |
| 1277 | { \ |
| 1278 | fputs_unfiltered (": ", gdb_stdlog); \ |
| 1279 | compile_cplus_debug_output (R); \ |
| 1280 | fputc_unfiltered ('\n', gdb_stdlog); \ |
| 1281 | } \ |
| 1282 | |
| 1283 | #define GCC_METHOD0(R, N) \ |
| 1284 | R gcc_cp_plugin::N () const \ |
| 1285 | { \ |
| 1286 | if (debug_compile_cplus_types) \ |
| 1287 | compile_cplus_debug_output (STRINGIFY (N)); \ |
| 1288 | auto result = FORWARD (N); \ |
| 1289 | OUTPUT_DEBUG_RESULT (result); \ |
| 1290 | return result; \ |
| 1291 | } |
| 1292 | #define GCC_METHOD1(R, N, A) \ |
| 1293 | R gcc_cp_plugin::N (A a) const \ |
| 1294 | { \ |
| 1295 | if (debug_compile_cplus_types) \ |
| 1296 | compile_cplus_debug_output (STRINGIFY (N), a); \ |
| 1297 | auto result = FORWARD (N, a); \ |
| 1298 | OUTPUT_DEBUG_RESULT (result); \ |
| 1299 | return result; \ |
| 1300 | } |
| 1301 | #define GCC_METHOD2(R, N, A, B) \ |
| 1302 | R gcc_cp_plugin::N (A a, B b) const \ |
| 1303 | { \ |
| 1304 | if (debug_compile_cplus_types) \ |
| 1305 | compile_cplus_debug_output (STRINGIFY (N), a, b); \ |
| 1306 | auto result = FORWARD (N, a, b); \ |
| 1307 | OUTPUT_DEBUG_RESULT (result); \ |
| 1308 | return result; \ |
| 1309 | } |
| 1310 | #define GCC_METHOD3(R, N, A, B, C) \ |
| 1311 | R gcc_cp_plugin::N (A a, B b, C c) const \ |
| 1312 | { \ |
| 1313 | if (debug_compile_cplus_types) \ |
| 1314 | compile_cplus_debug_output (STRINGIFY (N), a, b, c); \ |
| 1315 | auto result = FORWARD (N, a, b, c); \ |
| 1316 | OUTPUT_DEBUG_RESULT (result); \ |
| 1317 | return result; \ |
| 1318 | } |
| 1319 | #define GCC_METHOD4(R, N, A, B, C, D) \ |
| 1320 | R gcc_cp_plugin::N (A a, B b, C c, D d) const \ |
| 1321 | { \ |
| 1322 | if (debug_compile_cplus_types) \ |
| 1323 | compile_cplus_debug_output (STRINGIFY (N), a, b, c, d); \ |
| 1324 | auto result = FORWARD (N, a, b, c, d); \ |
| 1325 | OUTPUT_DEBUG_RESULT (result); \ |
| 1326 | return result; \ |
| 1327 | } |
| 1328 | #define GCC_METHOD5(R, N, A, B, C, D, E) \ |
| 1329 | R gcc_cp_plugin::N (A a, B b, C c, D d, E e) const \ |
| 1330 | { \ |
| 1331 | if (debug_compile_cplus_types) \ |
| 1332 | compile_cplus_debug_output (STRINGIFY (N), a, b, c, d, e); \ |
| 1333 | auto result = FORWARD (N, a, b, c, d, e); \ |
| 1334 | OUTPUT_DEBUG_RESULT (result); \ |
| 1335 | return result; \ |
| 1336 | } |
| 1337 | #define GCC_METHOD7(R, N, A, B, C, D, E, F, G) \ |
| 1338 | R gcc_cp_plugin::N (A a, B b, C c, D d, E e, F f, G g) const \ |
| 1339 | { \ |
| 1340 | if (debug_compile_cplus_types) \ |
| 1341 | compile_cplus_debug_output (STRINGIFY (N), a, b, c, d, e, f, g); \ |
| 1342 | auto result = FORWARD (N, a, b, c, d, e, f, g); \ |
| 1343 | OUTPUT_DEBUG_RESULT (result); \ |
| 1344 | return result; \ |
| 1345 | } |
| 1346 | |
| 1347 | #include "gcc-cp-fe.def" |
| 1348 | |
| 1349 | #undef GCC_METHOD0 |
| 1350 | #undef GCC_METHOD1 |
| 1351 | #undef GCC_METHOD2 |
| 1352 | #undef GCC_METHOD3 |
| 1353 | #undef GCC_METHOD4 |
| 1354 | #undef GCC_METHOD5 |
| 1355 | #undef GCC_METHOD7 |
| 1356 | #undef FORWARD |
| 1357 | #undef OUTPUT_DEBUG_RESULT |
| 1358 | |
| 1359 | gcc_expr |
| 1360 | gcc_cp_plugin::build_decl (const char *debug_decltype, const char *name, |
| 1361 | enum gcc_cp_symbol_kind sym_kind, gcc_type sym_type, |
| 1362 | const char *substitution_name, gcc_address address, |
| 1363 | const char *filename, unsigned int line_number) |
| 1364 | { |
| 1365 | if (debug_compile_cplus_types) |
| 1366 | fprintf_unfiltered (gdb_stdlog, "<%s> ", debug_decltype); |
| 1367 | |
| 1368 | return build_decl (name, sym_kind, sym_type, substitution_name, |
| 1369 | address, filename, line_number); |
| 1370 | } |
| 1371 | |
| 1372 | gcc_type |
| 1373 | gcc_cp_plugin::start_class_type (const char *debug_name, gcc_decl typedecl, |
| 1374 | const struct gcc_vbase_array *base_classes, |
| 1375 | const char *filename, unsigned int line_number) |
| 1376 | { |
| 1377 | if (debug_compile_cplus_types) |
| 1378 | fprintf_unfiltered (gdb_stdlog, "<%s> ", debug_name); |
| 1379 | |
| 1380 | return start_class_type (typedecl, base_classes, filename, line_number); |
| 1381 | } |
| 1382 | |
| 1383 | int |
| 1384 | gcc_cp_plugin::finish_class_type (const char *debug_name, |
| 1385 | unsigned long size_in_bytes) |
| 1386 | { |
| 1387 | if (debug_compile_cplus_types) |
| 1388 | fprintf_unfiltered (gdb_stdlog, "<%s> ", debug_name); |
| 1389 | |
| 1390 | return finish_class_type (size_in_bytes); |
| 1391 | } |
| 1392 | |
| 1393 | int |
| 1394 | gcc_cp_plugin::pop_binding_level (const char *debug_name) |
| 1395 | { |
| 1396 | if (debug_compile_cplus_types) |
| 1397 | fprintf_unfiltered (gdb_stdlog, "<%s> ", debug_name); |
| 1398 | |
| 1399 | return pop_binding_level (); |
| 1400 | } |
| 1401 | |
| 1402 | void _initialize_compile_cplus_types (); |
| 1403 | void |
| 1404 | _initialize_compile_cplus_types () |
| 1405 | { |
| 1406 | add_setshow_boolean_cmd ("compile-cplus-types", no_class, |
| 1407 | &debug_compile_cplus_types, _("\ |
| 1408 | Set debugging of C++ compile type conversion."), _("\ |
| 1409 | Show debugging of C++ compile type conversion."), _("\ |
| 1410 | When enabled debugging messages are printed during C++ type conversion for\n\ |
| 1411 | the compile commands."), |
| 1412 | nullptr, |
| 1413 | nullptr, |
| 1414 | &setdebuglist, |
| 1415 | &showdebuglist); |
| 1416 | |
| 1417 | add_setshow_boolean_cmd ("compile-cplus-scopes", no_class, |
| 1418 | &debug_compile_cplus_scopes, _("\ |
| 1419 | Set debugging of C++ compile scopes."), _("\ |
| 1420 | Show debugging of C++ compile scopes."), _("\ |
| 1421 | When enabled debugging messages are printed about definition scopes during\n\ |
| 1422 | C++ type conversion for the compile commands."), |
| 1423 | nullptr, |
| 1424 | nullptr, |
| 1425 | &setdebuglist, |
| 1426 | &showdebuglist); |
| 1427 | } |