1 /* Internal type definitions for GDB. 2 3 Copyright (C) 1992-2013 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 #if !defined (GDBTYPES_H) 23 #define GDBTYPES_H 1 24 25 #include "hashtab.h" 26 27 /* Forward declarations for prototypes. */ 28 struct field; 29 struct block; 30 struct value_print_options; 31 struct language_defn; 32 33 /* These declarations are DWARF-specific as some of the gdbtypes.h data types 34 are already DWARF-specific. */ 35 36 /* Offset relative to the start of its containing CU (compilation unit). */ 37 typedef struct 38 { 39 unsigned int cu_off; 40 } cu_offset; 41 42 /* Offset relative to the start of its .debug_info or .debug_types section. */ 43 typedef struct 44 { 45 unsigned int sect_off; 46 } sect_offset; 47 48 /* Some macros for char-based bitfields. */ 49 50 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7))) 51 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7))) 52 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7))) 53 #define B_TYPE unsigned char 54 #define B_BYTES(x) ( 1 + ((x)>>3) ) 55 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x)) 56 57 /* Different kinds of data types are distinguished by the `code' field. */ 58 59 enum type_code 60 { 61 TYPE_CODE_BITSTRING = -1, /* Deprecated */ 62 TYPE_CODE_UNDEF = 0, /* Not used; catches errors */ 63 TYPE_CODE_PTR, /* Pointer type */ 64 65 /* Array type with lower & upper bounds. 66 67 Regardless of the language, GDB represents multidimensional 68 array types the way C does: as arrays of arrays. So an 69 instance of a GDB array type T can always be seen as a series 70 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in 71 memory. 72 73 Row-major languages like C lay out multi-dimensional arrays so 74 that incrementing the rightmost index in a subscripting 75 expression results in the smallest change in the address of the 76 element referred to. Column-major languages like Fortran lay 77 them out so that incrementing the leftmost index results in the 78 smallest change. 79 80 This means that, in column-major languages, working our way 81 from type to target type corresponds to working through indices 82 from right to left, not left to right. */ 83 TYPE_CODE_ARRAY, 84 85 TYPE_CODE_STRUCT, /* C struct or Pascal record */ 86 TYPE_CODE_UNION, /* C union or Pascal variant part */ 87 TYPE_CODE_ENUM, /* Enumeration type */ 88 TYPE_CODE_FLAGS, /* Bit flags type */ 89 TYPE_CODE_FUNC, /* Function type */ 90 TYPE_CODE_INT, /* Integer type */ 91 92 /* Floating type. This is *NOT* a complex type. Beware, there are parts 93 of GDB which bogusly assume that TYPE_CODE_FLT can mean complex. */ 94 TYPE_CODE_FLT, 95 96 /* Void type. The length field specifies the length (probably always 97 one) which is used in pointer arithmetic involving pointers to 98 this type, but actually dereferencing such a pointer is invalid; 99 a void type has no length and no actual representation in memory 100 or registers. A pointer to a void type is a generic pointer. */ 101 TYPE_CODE_VOID, 102 103 TYPE_CODE_SET, /* Pascal sets */ 104 TYPE_CODE_RANGE, /* Range (integers within spec'd bounds). */ 105 106 /* A string type which is like an array of character but prints 107 differently (at least for (the deleted) CHILL). It does not 108 contain a length field as Pascal strings (for many Pascals, 109 anyway) do; if we want to deal with such strings, we should use 110 a new type code. */ 111 TYPE_CODE_STRING, 112 113 /* Unknown type. The length field is valid if we were able to 114 deduce that much about the type, or 0 if we don't even know that. */ 115 TYPE_CODE_ERROR, 116 117 /* C++ */ 118 TYPE_CODE_METHOD, /* Method type */ 119 120 /* Pointer-to-member-function type. This describes how to access a 121 particular member function of a class (possibly a virtual 122 member function). The representation may vary between different 123 C++ ABIs. */ 124 TYPE_CODE_METHODPTR, 125 126 /* Pointer-to-member type. This is the offset within a class to some 127 particular data member. The only currently supported representation 128 uses an unbiased offset, with -1 representing NULL; this is used 129 by the Itanium C++ ABI (used by GCC on all platforms). */ 130 TYPE_CODE_MEMBERPTR, 131 132 TYPE_CODE_REF, /* C++ Reference types */ 133 134 TYPE_CODE_CHAR, /* *real* character type */ 135 136 /* Boolean type. 0 is false, 1 is true, and other values are non-boolean 137 (e.g. FORTRAN "logical" used as unsigned int). */ 138 TYPE_CODE_BOOL, 139 140 /* Fortran */ 141 TYPE_CODE_COMPLEX, /* Complex float */ 142 143 TYPE_CODE_TYPEDEF, 144 145 TYPE_CODE_NAMESPACE, /* C++ namespace. */ 146 147 TYPE_CODE_DECFLOAT, /* Decimal floating point. */ 148 149 TYPE_CODE_MODULE, /* Fortran module. */ 150 151 /* Internal function type. */ 152 TYPE_CODE_INTERNAL_FUNCTION 153 }; 154 155 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an 156 alias for TYPE_CODE_STRUCT. This is for DWARF, which has a distinct 157 "class" attribute. Perhaps we should actually have a separate TYPE_CODE 158 so that we can print "class" or "struct" depending on what the debug 159 info said. It's not clear we should bother. */ 160 161 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT 162 163 /* Some constants representing each bit field in the main_type. See 164 the bit-field-specific macros, below, for documentation of each 165 constant in this enum. These enum values are only used with 166 init_type. Note that the values are chosen not to conflict with 167 type_instance_flag_value; this lets init_type error-check its 168 input. */ 169 170 enum type_flag_value 171 { 172 TYPE_FLAG_UNSIGNED = (1 << 8), 173 TYPE_FLAG_NOSIGN = (1 << 9), 174 TYPE_FLAG_STUB = (1 << 10), 175 TYPE_FLAG_TARGET_STUB = (1 << 11), 176 TYPE_FLAG_STATIC = (1 << 12), 177 TYPE_FLAG_PROTOTYPED = (1 << 13), 178 TYPE_FLAG_INCOMPLETE = (1 << 14), 179 TYPE_FLAG_VARARGS = (1 << 15), 180 TYPE_FLAG_VECTOR = (1 << 16), 181 TYPE_FLAG_FIXED_INSTANCE = (1 << 17), 182 TYPE_FLAG_STUB_SUPPORTED = (1 << 18), 183 TYPE_FLAG_GNU_IFUNC = (1 << 19), 184 185 /* Used for error-checking. */ 186 TYPE_FLAG_MIN = TYPE_FLAG_UNSIGNED 187 }; 188 189 /* Some bits for the type's instance_flags word. See the macros below 190 for documentation on each bit. Note that if you add a value here, 191 you must update the enum type_flag_value as well. */ 192 enum type_instance_flag_value 193 { 194 TYPE_INSTANCE_FLAG_CONST = (1 << 0), 195 TYPE_INSTANCE_FLAG_VOLATILE = (1 << 1), 196 TYPE_INSTANCE_FLAG_CODE_SPACE = (1 << 2), 197 TYPE_INSTANCE_FLAG_DATA_SPACE = (1 << 3), 198 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 = (1 << 4), 199 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2 = (1 << 5), 200 TYPE_INSTANCE_FLAG_NOTTEXT = (1 << 6), 201 TYPE_INSTANCE_FLAG_RESTRICT = (1 << 7) 202 }; 203 204 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT, the 205 type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */ 206 207 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned) 208 209 /* No sign for this type. In C++, "char", "signed char", and "unsigned 210 char" are distinct types; so we need an extra flag to indicate the 211 absence of a sign! */ 212 213 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign) 214 215 /* This appears in a type's flags word if it is a stub type (e.g., if 216 someone referenced a type that wasn't defined in a source file 217 via (struct sir_not_appearing_in_this_film *)). */ 218 219 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub) 220 221 /* The target type of this type is a stub type, and this type needs to 222 be updated if it gets un-stubbed in check_typedef. 223 Used for arrays and ranges, in which TYPE_LENGTH of the array/range 224 gets set based on the TYPE_LENGTH of the target type. 225 Also, set for TYPE_CODE_TYPEDEF. */ 226 227 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub) 228 229 /* Static type. If this is set, the corresponding type had 230 a static modifier. 231 Note: This may be unnecessary, since static data members 232 are indicated by other means (bitpos == -1). */ 233 234 #define TYPE_STATIC(t) (TYPE_MAIN_TYPE (t)->flag_static) 235 236 /* This is a function type which appears to have a prototype. We need 237 this for function calls in order to tell us if it's necessary to 238 coerce the args, or to just do the standard conversions. This is 239 used with a short field. */ 240 241 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped) 242 243 /* This flag is used to indicate that processing for this type 244 is incomplete. 245 246 (Mostly intended for HP platforms, where class methods, for 247 instance, can be encountered before their classes in the debug 248 info; the incomplete type has to be marked so that the class and 249 the method can be assigned correct types.) */ 250 251 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete) 252 253 /* FIXME drow/2002-06-03: Only used for methods, but applies as well 254 to functions. */ 255 256 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs) 257 258 /* Identify a vector type. Gcc is handling this by adding an extra 259 attribute to the array type. We slurp that in as a new flag of a 260 type. This is used only in dwarf2read.c. */ 261 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector) 262 263 /* The debugging formats (especially STABS) do not contain enough information 264 to represent all Ada types---especially those whose size depends on 265 dynamic quantities. Therefore, the GNAT Ada compiler includes 266 extra information in the form of additional type definitions 267 connected by naming conventions. This flag indicates that the 268 type is an ordinary (unencoded) GDB type that has been created from 269 the necessary run-time information, and does not need further 270 interpretation. Optionally marks ordinary, fixed-size GDB type. */ 271 272 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance) 273 274 /* This debug target supports TYPE_STUB(t). In the unsupported case we have to 275 rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE (). 276 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only guessed 277 the TYPE_STUB(t) value (see dwarfread.c). */ 278 279 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported) 280 281 /* Not textual. By default, GDB treats all single byte integers as 282 characters (or elements of strings) unless this flag is set. */ 283 284 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT) 285 286 /* Used only for TYPE_CODE_FUNC where it specifies the real function 287 address is returned by this function call. TYPE_TARGET_TYPE determines the 288 final returned function type to be presented to user. */ 289 290 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc) 291 292 /* Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by 293 the objfile retrieved as TYPE_OBJFILE. Otherweise, the type is 294 owned by an architecture; TYPE_OBJFILE is NULL in this case. */ 295 296 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned) 297 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner 298 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL) 299 300 /* True if this type was declared using the "class" keyword. This is 301 only valid for C++ structure types, and only used for displaying 302 the type. If false, the structure was declared as a "struct". */ 303 304 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class) 305 306 /* True if this type is a "flag" enum. A flag enum is one where all 307 the values are pairwise disjoint when "and"ed together. This 308 affects how enum values are printed. */ 309 310 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum) 311 312 /* Constant type. If this is set, the corresponding type has a 313 const modifier. */ 314 315 #define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) 316 317 /* Volatile type. If this is set, the corresponding type has a 318 volatile modifier. */ 319 320 #define TYPE_VOLATILE(t) \ 321 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) 322 323 /* Restrict type. If this is set, the corresponding type has a 324 restrict modifier. */ 325 326 #define TYPE_RESTRICT(t) \ 327 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) 328 329 /* Instruction-space delimited type. This is for Harvard architectures 330 which have separate instruction and data address spaces (and perhaps 331 others). 332 333 GDB usually defines a flat address space that is a superset of the 334 architecture's two (or more) address spaces, but this is an extension 335 of the architecture's model. 336 337 If TYPE_FLAG_INST is set, an object of the corresponding type 338 resides in instruction memory, even if its address (in the extended 339 flat address space) does not reflect this. 340 341 Similarly, if TYPE_FLAG_DATA is set, then an object of the 342 corresponding type resides in the data memory space, even if 343 this is not indicated by its (flat address space) address. 344 345 If neither flag is set, the default space for functions / methods 346 is instruction space, and for data objects is data memory. */ 347 348 #define TYPE_CODE_SPACE(t) \ 349 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) 350 351 #define TYPE_DATA_SPACE(t) \ 352 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) 353 354 /* Address class flags. Some environments provide for pointers whose 355 size is different from that of a normal pointer or address types 356 where the bits are interpreted differently than normal addresses. The 357 TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific 358 ways to represent these different types of address classes. */ 359 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \ 360 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1) 361 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \ 362 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2) 363 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \ 364 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2) 365 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \ 366 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) 367 368 /* Determine which field of the union main_type.fields[x].loc is used. */ 369 370 enum field_loc_kind 371 { 372 FIELD_LOC_KIND_BITPOS, /* bitpos */ 373 FIELD_LOC_KIND_ENUMVAL, /* enumval */ 374 FIELD_LOC_KIND_PHYSADDR, /* physaddr */ 375 FIELD_LOC_KIND_PHYSNAME, /* physname */ 376 FIELD_LOC_KIND_DWARF_BLOCK /* dwarf_block */ 377 }; 378 379 /* A discriminant to determine which field in the main_type.type_specific 380 union is being used, if any. 381 382 For types such as TYPE_CODE_FLT or TYPE_CODE_FUNC, the use of this 383 discriminant is really redundant, as we know from the type code 384 which field is going to be used. As such, it would be possible to 385 reduce the size of this enum in order to save a bit or two for 386 other fields of struct main_type. But, since we still have extra 387 room , and for the sake of clarity and consistency, we treat all fields 388 of the union the same way. */ 389 390 enum type_specific_kind 391 { 392 TYPE_SPECIFIC_NONE, 393 TYPE_SPECIFIC_CPLUS_STUFF, 394 TYPE_SPECIFIC_GNAT_STUFF, 395 TYPE_SPECIFIC_FLOATFORMAT, 396 TYPE_SPECIFIC_FUNC 397 }; 398 399 /* This structure is space-critical. 400 Its layout has been tweaked to reduce the space used. */ 401 402 struct main_type 403 { 404 /* Code for kind of type. */ 405 406 ENUM_BITFIELD(type_code) code : 8; 407 408 /* Flags about this type. These fields appear at this location 409 because they packs nicely here. See the TYPE_* macros for 410 documentation about these fields. */ 411 412 unsigned int flag_unsigned : 1; 413 unsigned int flag_nosign : 1; 414 unsigned int flag_stub : 1; 415 unsigned int flag_target_stub : 1; 416 unsigned int flag_static : 1; 417 unsigned int flag_prototyped : 1; 418 unsigned int flag_incomplete : 1; 419 unsigned int flag_varargs : 1; 420 unsigned int flag_vector : 1; 421 unsigned int flag_stub_supported : 1; 422 unsigned int flag_gnu_ifunc : 1; 423 unsigned int flag_fixed_instance : 1; 424 unsigned int flag_objfile_owned : 1; 425 /* True if this type was declared with "class" rather than 426 "struct". */ 427 unsigned int flag_declared_class : 1; 428 429 /* True if this is an enum type with disjoint values. This affects 430 how the enum is printed. */ 431 432 unsigned int flag_flag_enum : 1; 433 434 /* A discriminant telling us which field of the type_specific union 435 is being used for this type, if any. */ 436 ENUM_BITFIELD(type_specific_kind) type_specific_field : 3; 437 438 /* Number of fields described for this type. This field appears at 439 this location because it packs nicely here. */ 440 441 short nfields; 442 443 /* Field number of the virtual function table pointer in 444 VPTR_BASETYPE. If -1, we were unable to find the virtual 445 function table pointer in initial symbol reading, and 446 get_vptr_fieldno should be called to find it if possible. 447 get_vptr_fieldno will update this field if possible. 448 Otherwise the value is left at -1. 449 450 Unused if this type does not have virtual functions. 451 452 This field appears at this location because it packs nicely here. */ 453 454 short vptr_fieldno; 455 456 /* Name of this type, or NULL if none. 457 458 This is used for printing only, except by poorly designed C++ code. 459 For looking up a name, look for a symbol in the VAR_DOMAIN. 460 This is generally allocated in the objfile's obstack. 461 However coffread.c uses malloc. */ 462 463 const char *name; 464 465 /* Tag name for this type, or NULL if none. This means that the 466 name of the type consists of a keyword followed by the tag name. 467 Which keyword is determined by the type code ("struct" for 468 TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages 469 with this feature. 470 471 This is used for printing only, except by poorly designed C++ code. 472 For looking up a name, look for a symbol in the STRUCT_DOMAIN. 473 One more legitimate use is that if TYPE_FLAG_STUB is set, this is 474 the name to use to look for definitions in other files. */ 475 476 const char *tag_name; 477 478 /* Every type is now associated with a particular objfile, and the 479 type is allocated on the objfile_obstack for that objfile. One problem 480 however, is that there are times when gdb allocates new types while 481 it is not in the process of reading symbols from a particular objfile. 482 Fortunately, these happen when the type being created is a derived 483 type of an existing type, such as in lookup_pointer_type(). So 484 we can just allocate the new type using the same objfile as the 485 existing type, but to do this we need a backpointer to the objfile 486 from the existing type. Yes this is somewhat ugly, but without 487 major overhaul of the internal type system, it can't be avoided 488 for now. */ 489 490 union type_owner 491 { 492 struct objfile *objfile; 493 struct gdbarch *gdbarch; 494 } owner; 495 496 /* For a pointer type, describes the type of object pointed to. 497 For an array type, describes the type of the elements. 498 For a function or method type, describes the type of the return value. 499 For a range type, describes the type of the full range. 500 For a complex type, describes the type of each coordinate. 501 For a special record or union type encoding a dynamic-sized type 502 in GNAT, a memoized pointer to a corresponding static version of 503 the type. 504 Unused otherwise. */ 505 506 struct type *target_type; 507 508 /* For structure and union types, a description of each field. 509 For set and pascal array types, there is one "field", 510 whose type is the domain type of the set or array. 511 For range types, there are two "fields", 512 the minimum and maximum values (both inclusive). 513 For enum types, each possible value is described by one "field". 514 For a function or method type, a "field" for each parameter. 515 For C++ classes, there is one field for each base class (if it is 516 a derived class) plus one field for each class data member. Member 517 functions are recorded elsewhere. 518 519 Using a pointer to a separate array of fields 520 allows all types to have the same size, which is useful 521 because we can allocate the space for a type before 522 we know what to put in it. */ 523 524 union 525 { 526 struct field 527 { 528 union field_location 529 { 530 /* Position of this field, counting in bits from start of 531 containing structure. For gdbarch_bits_big_endian=1 532 targets, it is the bit offset to the MSB. For 533 gdbarch_bits_big_endian=0 targets, it is the bit offset to 534 the LSB. */ 535 536 int bitpos; 537 538 /* Enum value. */ 539 LONGEST enumval; 540 541 /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr 542 is the location (in the target) of the static field. 543 Otherwise, physname is the mangled label of the static field. */ 544 545 CORE_ADDR physaddr; 546 const char *physname; 547 548 /* The field location can be computed by evaluating the following DWARF 549 block. Its DATA is allocated on objfile_obstack - no CU load is 550 needed to access it. */ 551 552 struct dwarf2_locexpr_baton *dwarf_block; 553 } 554 loc; 555 556 /* For a function or member type, this is 1 if the argument is marked 557 artificial. Artificial arguments should not be shown to the 558 user. For TYPE_CODE_RANGE it is set if the specific bound is not 559 defined. */ 560 unsigned int artificial : 1; 561 562 /* Discriminant for union field_location. */ 563 ENUM_BITFIELD(field_loc_kind) loc_kind : 3; 564 565 /* Size of this field, in bits, or zero if not packed. 566 If non-zero in an array type, indicates the element size in 567 bits (used only in Ada at the moment). 568 For an unpacked field, the field's type's length 569 says how many bytes the field occupies. */ 570 571 unsigned int bitsize : 28; 572 573 /* In a struct or union type, type of this field. 574 In a function or member type, type of this argument. 575 In an array type, the domain-type of the array. */ 576 577 struct type *type; 578 579 /* Name of field, value or argument. 580 NULL for range bounds, array domains, and member function 581 arguments. */ 582 583 const char *name; 584 } *fields; 585 586 /* Union member used for range types. */ 587 588 struct range_bounds 589 { 590 /* Low bound of range. */ 591 592 LONGEST low; 593 594 /* High bound of range. */ 595 596 LONGEST high; 597 598 /* Flags indicating whether the values of low and high are 599 valid. When true, the respective range value is 600 undefined. Currently used only for FORTRAN arrays. */ 601 602 char low_undefined; 603 char high_undefined; 604 605 } *bounds; 606 607 } flds_bnds; 608 609 /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE 610 is the base class which defined the virtual function table pointer. 611 612 For types that are pointer to member types (TYPE_CODE_METHODPTR, 613 TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer 614 is a member of. 615 616 For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate 617 type that contains the method. 618 619 Unused otherwise. */ 620 621 struct type *vptr_basetype; 622 623 /* Slot to point to additional language-specific fields of this type. */ 624 625 union type_specific 626 { 627 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to 628 cplus_struct_default, a default static instance of a struct 629 cplus_struct_type. */ 630 631 struct cplus_struct_type *cplus_stuff; 632 633 /* GNAT_STUFF is for types for which the GNAT Ada compiler 634 provides additional information. */ 635 struct gnat_aux_type *gnat_stuff; 636 637 /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two 638 floatformat objects that describe the floating-point value 639 that resides within the type. The first is for big endian 640 targets and the second is for little endian targets. */ 641 642 const struct floatformat **floatformat; 643 644 /* For TYPE_CODE_FUNC types, */ 645 struct func_type *func_stuff; 646 } type_specific; 647 }; 648 649 /* A ``struct type'' describes a particular instance of a type, with 650 some particular qualification. */ 651 struct type 652 { 653 /* Type that is a pointer to this type. 654 NULL if no such pointer-to type is known yet. 655 The debugger may add the address of such a type 656 if it has to construct one later. */ 657 658 struct type *pointer_type; 659 660 /* C++: also need a reference type. */ 661 662 struct type *reference_type; 663 664 /* Variant chain. This points to a type that differs from this one only 665 in qualifiers and length. Currently, the possible qualifiers are 666 const, volatile, code-space, data-space, and address class. The 667 length may differ only when one of the address class flags are set. 668 The variants are linked in a circular ring and share MAIN_TYPE. */ 669 struct type *chain; 670 671 /* Flags specific to this instance of the type, indicating where 672 on the ring we are. 673 674 For TYPE_CODE_TYPEDEF the flags of the typedef type should be binary 675 or-ed with the target type, with a special case for address class and 676 space class. For example if this typedef does not specify any new 677 qualifiers, TYPE_INSTANCE_FLAGS is 0 and the instance flags are 678 completely inherited from the target type. No qualifiers can be cleared 679 by the typedef. See also check_typedef. */ 680 int instance_flags; 681 682 /* Length of storage for a value of this type. This is what 683 sizeof(type) would return; use it for address arithmetic, 684 memory reads and writes, etc. This size includes padding. For 685 example, an i386 extended-precision floating point value really 686 only occupies ten bytes, but most ABI's declare its size to be 687 12 bytes, to preserve alignment. A `struct type' representing 688 such a floating-point type would have a `length' value of 12, 689 even though the last two bytes are unused. 690 691 There's a bit of a host/target mess here, if you're concerned 692 about machines whose bytes aren't eight bits long, or who don't 693 have byte-addressed memory. Various places pass this to memcpy 694 and such, meaning it must be in units of host bytes. Various 695 other places expect they can calculate addresses by adding it 696 and such, meaning it must be in units of target bytes. For 697 some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8 698 and TARGET_CHAR_BIT will be (say) 32, this is a problem. 699 700 One fix would be to make this field in bits (requiring that it 701 always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) --- 702 the other choice would be to make it consistently in units of 703 HOST_CHAR_BIT. However, this would still fail to address 704 machines based on a ternary or decimal representation. */ 705 706 unsigned length; 707 708 /* Core type, shared by a group of qualified types. */ 709 struct main_type *main_type; 710 }; 711 712 #define NULL_TYPE ((struct type *) 0) 713 714 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION 715 nodes. */ 716 717 struct cplus_struct_type 718 { 719 /* Number of base classes this type derives from. The baseclasses are 720 stored in the first N_BASECLASSES fields (i.e. the `fields' field of 721 the struct type). I think only the `type' field of such a field has 722 any meaning. */ 723 724 short n_baseclasses; 725 726 /* Number of methods with unique names. All overloaded methods with 727 the same name count only once. */ 728 729 short nfn_fields; 730 731 /* Number of template arguments. */ 732 unsigned short n_template_arguments; 733 734 /* One if this struct is a dynamic class, as defined by the 735 Itanium C++ ABI: if it requires a virtual table pointer, 736 because it or any of its base classes have one or more virtual 737 member functions or virtual base classes. Minus one if not 738 dynamic. Zero if not yet computed. */ 739 int is_dynamic : 2; 740 741 /* Non-zero if this type came from a Java CU. */ 742 unsigned int is_java : 1; 743 744 /* For derived classes, the number of base classes is given by 745 n_baseclasses and virtual_field_bits is a bit vector containing 746 one bit per base class. If the base class is virtual, the 747 corresponding bit will be set. 748 I.E, given: 749 750 class A{}; 751 class B{}; 752 class C : public B, public virtual A {}; 753 754 B is a baseclass of C; A is a virtual baseclass for C. 755 This is a C++ 2.0 language feature. */ 756 757 B_TYPE *virtual_field_bits; 758 759 /* For classes with private fields, the number of fields is given by 760 nfields and private_field_bits is a bit vector containing one bit 761 per field. 762 If the field is private, the corresponding bit will be set. */ 763 764 B_TYPE *private_field_bits; 765 766 /* For classes with protected fields, the number of fields is given by 767 nfields and protected_field_bits is a bit vector containing one bit 768 per field. 769 If the field is private, the corresponding bit will be set. */ 770 771 B_TYPE *protected_field_bits; 772 773 /* For classes with fields to be ignored, either this is optimized out 774 or this field has length 0. */ 775 776 B_TYPE *ignore_field_bits; 777 778 /* For classes, structures, and unions, a description of each field, 779 which consists of an overloaded name, followed by the types of 780 arguments that the method expects, and then the name after it 781 has been renamed to make it distinct. 782 783 fn_fieldlists points to an array of nfn_fields of these. */ 784 785 struct fn_fieldlist 786 { 787 788 /* The overloaded name. 789 This is generally allocated in the objfile's obstack. 790 However stabsread.c sometimes uses malloc. */ 791 792 const char *name; 793 794 /* The number of methods with this name. */ 795 796 int length; 797 798 /* The list of methods. */ 799 800 struct fn_field 801 { 802 803 /* If is_stub is clear, this is the mangled name which we can 804 look up to find the address of the method (FIXME: it would 805 be cleaner to have a pointer to the struct symbol here 806 instead). */ 807 808 /* If is_stub is set, this is the portion of the mangled 809 name which specifies the arguments. For example, "ii", 810 if there are two int arguments, or "" if there are no 811 arguments. See gdb_mangle_name for the conversion from this 812 format to the one used if is_stub is clear. */ 813 814 const char *physname; 815 816 /* The function type for the method. 817 (This comment used to say "The return value of the method", 818 but that's wrong. The function type 819 is expected here, i.e. something with TYPE_CODE_FUNC, 820 and *not* the return-value type). */ 821 822 struct type *type; 823 824 /* For virtual functions. 825 First baseclass that defines this virtual function. */ 826 827 struct type *fcontext; 828 829 /* Attributes. */ 830 831 unsigned int is_const:1; 832 unsigned int is_volatile:1; 833 unsigned int is_private:1; 834 unsigned int is_protected:1; 835 unsigned int is_public:1; 836 unsigned int is_abstract:1; 837 unsigned int is_static:1; 838 unsigned int is_final:1; 839 unsigned int is_synchronized:1; 840 unsigned int is_native:1; 841 unsigned int is_artificial:1; 842 843 /* A stub method only has some fields valid (but they are enough 844 to reconstruct the rest of the fields). */ 845 unsigned int is_stub:1; 846 847 /* True if this function is a constructor, false 848 otherwise. */ 849 unsigned int is_constructor : 1; 850 851 /* Unused. */ 852 unsigned int dummy:3; 853 854 /* Index into that baseclass's virtual function table, 855 minus 2; else if static: VOFFSET_STATIC; else: 0. */ 856 857 unsigned int voffset:16; 858 859 #define VOFFSET_STATIC 1 860 861 } 862 *fn_fields; 863 864 } 865 *fn_fieldlists; 866 867 /* typedefs defined inside this class. TYPEDEF_FIELD points to an array of 868 TYPEDEF_FIELD_COUNT elements. */ 869 struct typedef_field 870 { 871 /* Unqualified name to be prefixed by owning class qualified name. */ 872 const char *name; 873 874 /* Type this typedef named NAME represents. */ 875 struct type *type; 876 } 877 *typedef_field; 878 unsigned typedef_field_count; 879 880 /* The template arguments. This is an array with 881 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template 882 classes. */ 883 struct symbol **template_arguments; 884 }; 885 886 /* Struct used to store conversion rankings. */ 887 struct rank 888 { 889 short rank; 890 891 /* When two conversions are of the same type and therefore have the same 892 rank, subrank is used to differentiate the two. 893 Eg: Two derived-class-pointer to base-class-pointer conversions would 894 both have base pointer conversion rank, but the conversion with the 895 shorter distance to the ancestor is preferable. 'subrank' would be used 896 to reflect that. */ 897 short subrank; 898 }; 899 900 /* Struct used for ranking a function for overload resolution. */ 901 struct badness_vector 902 { 903 int length; 904 struct rank *rank; 905 }; 906 907 /* GNAT Ada-specific information for various Ada types. */ 908 struct gnat_aux_type 909 { 910 /* Parallel type used to encode information about dynamic types 911 used in Ada (such as variant records, variable-size array, 912 etc). */ 913 struct type* descriptive_type; 914 }; 915 916 /* For TYPE_CODE_FUNC types, */ 917 struct func_type 918 { 919 /* The calling convention for targets supporting multiple ABIs. Right now 920 this is only fetched from the Dwarf-2 DW_AT_calling_convention 921 attribute. */ 922 unsigned calling_convention; 923 924 /* Only those DW_TAG_GNU_call_site's in this function that have 925 DW_AT_GNU_tail_call set are linked in this list. Function without its 926 tail call list complete (DW_AT_GNU_all_tail_call_sites or its superset 927 DW_AT_GNU_all_call_sites) has TAIL_CALL_LIST NULL, even if some 928 DW_TAG_GNU_call_site's exist in such function. */ 929 struct call_site *tail_call_list; 930 }; 931 932 /* struct call_site_parameter can be referenced in callees by several ways. */ 933 934 enum call_site_parameter_kind 935 { 936 /* Use field call_site_parameter.u.dwarf_reg. */ 937 CALL_SITE_PARAMETER_DWARF_REG, 938 939 /* Use field call_site_parameter.u.fb_offset. */ 940 CALL_SITE_PARAMETER_FB_OFFSET, 941 942 /* Use field call_site_parameter.u.param_offset. */ 943 CALL_SITE_PARAMETER_PARAM_OFFSET 944 }; 945 946 /* A place where a function gets called from, represented by 947 DW_TAG_GNU_call_site. It can be looked up from symtab->call_site_htab. */ 948 949 struct call_site 950 { 951 /* Address of the first instruction after this call. It must be the first 952 field as we overload core_addr_hash and core_addr_eq for it. */ 953 CORE_ADDR pc; 954 955 /* List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */ 956 struct call_site *tail_call_next; 957 958 /* Describe DW_AT_GNU_call_site_target. Missing attribute uses 959 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */ 960 struct 961 { 962 union field_location loc; 963 964 /* Discriminant for union field_location. */ 965 ENUM_BITFIELD(field_loc_kind) loc_kind : 3; 966 } 967 target; 968 969 /* Size of the PARAMETER array. */ 970 unsigned parameter_count; 971 972 /* CU of the function where the call is located. It gets used for DWARF 973 blocks execution in the parameter array below. */ 974 struct dwarf2_per_cu_data *per_cu; 975 976 /* Describe DW_TAG_GNU_call_site's DW_TAG_formal_parameter. */ 977 struct call_site_parameter 978 { 979 ENUM_BITFIELD (call_site_parameter_kind) kind : 2; 980 981 union call_site_parameter_u 982 { 983 /* DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX as DWARF 984 register number, for register passed parameters. */ 985 int dwarf_reg; 986 987 /* Offset from the callee's frame base, for stack passed parameters. 988 This equals offset from the caller's stack pointer. */ 989 CORE_ADDR fb_offset; 990 991 /* Offset relative to the start of this PER_CU to 992 DW_TAG_formal_parameter which is referenced by both caller and 993 the callee. */ 994 cu_offset param_offset; 995 } 996 u; 997 998 /* DW_TAG_formal_parameter's DW_AT_GNU_call_site_value. It is never 999 NULL. */ 1000 const gdb_byte *value; 1001 size_t value_size; 1002 1003 /* DW_TAG_formal_parameter's DW_AT_GNU_call_site_data_value. It may be 1004 NULL if not provided by DWARF. */ 1005 const gdb_byte *data_value; 1006 size_t data_value_size; 1007 } 1008 parameter[1]; 1009 }; 1010 1011 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the 1012 this shared static structure. */ 1013 1014 extern const struct cplus_struct_type cplus_struct_default; 1015 1016 extern void allocate_cplus_struct_type (struct type *); 1017 1018 #define INIT_CPLUS_SPECIFIC(type) \ 1019 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \ 1020 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \ 1021 &cplus_struct_default) 1022 1023 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type) 1024 1025 #define HAVE_CPLUS_STRUCT(type) \ 1026 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \ 1027 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default) 1028 1029 extern const struct gnat_aux_type gnat_aux_default; 1030 1031 extern void allocate_gnat_aux_type (struct type *); 1032 1033 #define INIT_GNAT_SPECIFIC(type) \ 1034 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \ 1035 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default) 1036 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type) 1037 /* A macro that returns non-zero if the type-specific data should be 1038 read as "gnat-stuff". */ 1039 #define HAVE_GNAT_AUX_INFO(type) \ 1040 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF) 1041 1042 #define INIT_FUNC_SPECIFIC(type) \ 1043 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \ 1044 TYPE_MAIN_TYPE (type)->type_specific.func_stuff \ 1045 = TYPE_ZALLOC (type, \ 1046 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff))) 1047 1048 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags 1049 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type 1050 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name 1051 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name 1052 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type 1053 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type 1054 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type 1055 #define TYPE_CHAIN(thistype) (thistype)->chain 1056 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef. 1057 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type, 1058 so you only have to call check_typedef once. Since allocate_value 1059 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */ 1060 #define TYPE_LENGTH(thistype) (thistype)->length 1061 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real 1062 type, you need to do TYPE_CODE (check_type (this_type)). */ 1063 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code 1064 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields 1065 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields 1066 1067 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0) 1068 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds 1069 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low 1070 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high 1071 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \ 1072 TYPE_RANGE_DATA(range_type)->low_undefined 1073 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \ 1074 TYPE_RANGE_DATA(range_type)->high_undefined 1075 1076 /* Moto-specific stuff for FORTRAN arrays. */ 1077 1078 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \ 1079 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype)) 1080 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \ 1081 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype)) 1082 1083 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \ 1084 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype)))) 1085 1086 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \ 1087 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype)))) 1088 1089 /* C++ */ 1090 1091 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype 1092 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype 1093 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno 1094 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields 1095 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields 1096 #define TYPE_SPECIFIC_FIELD(thistype) \ 1097 TYPE_MAIN_TYPE(thistype)->type_specific_field 1098 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific 1099 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case 1100 where we're trying to print an Ada array using the C language. 1101 In that case, there is no "cplus_stuff", but the C language assumes 1102 that there is. What we do, in that case, is pretend that there is 1103 an implicit one which is the default cplus stuff. */ 1104 #define TYPE_CPLUS_SPECIFIC(thistype) \ 1105 (!HAVE_CPLUS_STRUCT(thistype) \ 1106 ? (struct cplus_struct_type*)&cplus_struct_default \ 1107 : TYPE_RAW_CPLUS_SPECIFIC(thistype)) 1108 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff 1109 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat 1110 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff 1111 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type 1112 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention 1113 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list 1114 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index) 1115 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses 1116 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index) 1117 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index) 1118 #define BASETYPE_VIA_PUBLIC(thistype, index) \ 1119 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index))) 1120 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic 1121 #define TYPE_CPLUS_REALLY_JAVA(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_java 1122 1123 #define BASETYPE_VIA_VIRTUAL(thistype, index) \ 1124 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \ 1125 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))) 1126 1127 #define FIELD_TYPE(thisfld) ((thisfld).type) 1128 #define FIELD_NAME(thisfld) ((thisfld).name) 1129 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind) 1130 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos) 1131 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0) 1132 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval) 1133 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0) 1134 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname) 1135 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr) 1136 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block) 1137 #define SET_FIELD_BITPOS(thisfld, bitpos) \ 1138 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \ 1139 FIELD_BITPOS_LVAL (thisfld) = (bitpos)) 1140 #define SET_FIELD_ENUMVAL(thisfld, enumval) \ 1141 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \ 1142 FIELD_ENUMVAL_LVAL (thisfld) = (enumval)) 1143 #define SET_FIELD_PHYSNAME(thisfld, name) \ 1144 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \ 1145 FIELD_STATIC_PHYSNAME (thisfld) = (name)) 1146 #define SET_FIELD_PHYSADDR(thisfld, addr) \ 1147 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \ 1148 FIELD_STATIC_PHYSADDR (thisfld) = (addr)) 1149 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \ 1150 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \ 1151 FIELD_DWARF_BLOCK (thisfld) = (addr)) 1152 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial) 1153 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize) 1154 1155 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n] 1156 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n)) 1157 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n)) 1158 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n)) 1159 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n)) 1160 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL (TYPE_FIELD (thistype, n)) 1161 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n)) 1162 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n)) 1163 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n)) 1164 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n)) 1165 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n)) 1166 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0) 1167 1168 #define TYPE_FIELD_PRIVATE_BITS(thistype) \ 1169 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits 1170 #define TYPE_FIELD_PROTECTED_BITS(thistype) \ 1171 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits 1172 #define TYPE_FIELD_IGNORE_BITS(thistype) \ 1173 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits 1174 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \ 1175 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits 1176 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \ 1177 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)) 1178 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \ 1179 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)) 1180 #define SET_TYPE_FIELD_IGNORE(thistype, n) \ 1181 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)) 1182 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \ 1183 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)) 1184 #define TYPE_FIELD_PRIVATE(thistype, n) \ 1185 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \ 1186 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))) 1187 #define TYPE_FIELD_PROTECTED(thistype, n) \ 1188 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \ 1189 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))) 1190 #define TYPE_FIELD_IGNORE(thistype, n) \ 1191 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \ 1192 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))) 1193 #define TYPE_FIELD_VIRTUAL(thistype, n) \ 1194 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \ 1195 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))) 1196 1197 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists 1198 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n] 1199 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields 1200 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name 1201 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length 1202 1203 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \ 1204 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments 1205 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \ 1206 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments 1207 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \ 1208 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n] 1209 1210 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n] 1211 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname 1212 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type 1213 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type) 1214 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const) 1215 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile) 1216 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private) 1217 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected) 1218 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public) 1219 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static) 1220 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final) 1221 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized) 1222 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native) 1223 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial) 1224 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract) 1225 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub) 1226 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor) 1227 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext) 1228 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2) 1229 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1) 1230 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC) 1231 1232 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \ 1233 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field 1234 #define TYPE_TYPEDEF_FIELD(thistype, n) \ 1235 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n] 1236 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \ 1237 TYPE_TYPEDEF_FIELD (thistype, n).name 1238 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \ 1239 TYPE_TYPEDEF_FIELD (thistype, n).type 1240 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \ 1241 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count 1242 1243 #define TYPE_IS_OPAQUE(thistype) \ 1244 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \ 1245 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \ 1246 && (TYPE_NFIELDS (thistype) == 0) \ 1247 && (!HAVE_CPLUS_STRUCT (thistype) \ 1248 || TYPE_NFN_FIELDS (thistype) == 0) \ 1249 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype))) 1250 1251 /* A helper macro that returns the name of a type or "unnamed type" if the type 1252 has no name. */ 1253 #define TYPE_SAFE_NAME(type) \ 1254 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>")) 1255 1256 /* A helper macro that returns the name of an error type. If the type 1257 has a name, it is used; otherwise, a default is used. */ 1258 #define TYPE_ERROR_NAME(type) \ 1259 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>")) 1260 1261 struct builtin_type 1262 { 1263 /* Integral types. */ 1264 1265 /* Implicit size/sign (based on the architecture's ABI). */ 1266 struct type *builtin_void; 1267 struct type *builtin_char; 1268 struct type *builtin_short; 1269 struct type *builtin_int; 1270 struct type *builtin_long; 1271 struct type *builtin_signed_char; 1272 struct type *builtin_unsigned_char; 1273 struct type *builtin_unsigned_short; 1274 struct type *builtin_unsigned_int; 1275 struct type *builtin_unsigned_long; 1276 struct type *builtin_float; 1277 struct type *builtin_double; 1278 struct type *builtin_long_double; 1279 struct type *builtin_complex; 1280 struct type *builtin_double_complex; 1281 struct type *builtin_string; 1282 struct type *builtin_bool; 1283 struct type *builtin_long_long; 1284 struct type *builtin_unsigned_long_long; 1285 struct type *builtin_decfloat; 1286 struct type *builtin_decdouble; 1287 struct type *builtin_declong; 1288 1289 /* "True" character types. 1290 We use these for the '/c' print format, because c_char is just a 1291 one-byte integral type, which languages less laid back than C 1292 will print as ... well, a one-byte integral type. */ 1293 struct type *builtin_true_char; 1294 struct type *builtin_true_unsigned_char; 1295 1296 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0" 1297 is for when an architecture needs to describe a register that has 1298 no size. */ 1299 struct type *builtin_int0; 1300 struct type *builtin_int8; 1301 struct type *builtin_uint8; 1302 struct type *builtin_int16; 1303 struct type *builtin_uint16; 1304 struct type *builtin_int32; 1305 struct type *builtin_uint32; 1306 struct type *builtin_int64; 1307 struct type *builtin_uint64; 1308 struct type *builtin_int128; 1309 struct type *builtin_uint128; 1310 1311 /* Wide character types. */ 1312 struct type *builtin_char16; 1313 struct type *builtin_char32; 1314 1315 /* Pointer types. */ 1316 1317 /* `pointer to data' type. Some target platforms use an implicitly 1318 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */ 1319 struct type *builtin_data_ptr; 1320 1321 /* `pointer to function (returning void)' type. Harvard 1322 architectures mean that ABI function and code pointers are not 1323 interconvertible. Similarly, since ANSI, C standards have 1324 explicitly said that pointers to functions and pointers to data 1325 are not interconvertible --- that is, you can't cast a function 1326 pointer to void * and back, and expect to get the same value. 1327 However, all function pointer types are interconvertible, so void 1328 (*) () can server as a generic function pointer. */ 1329 struct type *builtin_func_ptr; 1330 1331 /* `function returning pointer to function (returning void)' type. 1332 The final void return type is not significant for it. */ 1333 struct type *builtin_func_func; 1334 1335 1336 /* Special-purpose types. */ 1337 1338 /* This type is used to represent a GDB internal function. */ 1339 struct type *internal_fn; 1340 }; 1341 1342 /* Return the type table for the specified architecture. */ 1343 extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch); 1344 1345 1346 /* Per-objfile types used by symbol readers. */ 1347 1348 struct objfile_type 1349 { 1350 /* Basic types based on the objfile architecture. */ 1351 struct type *builtin_void; 1352 struct type *builtin_char; 1353 struct type *builtin_short; 1354 struct type *builtin_int; 1355 struct type *builtin_long; 1356 struct type *builtin_long_long; 1357 struct type *builtin_signed_char; 1358 struct type *builtin_unsigned_char; 1359 struct type *builtin_unsigned_short; 1360 struct type *builtin_unsigned_int; 1361 struct type *builtin_unsigned_long; 1362 struct type *builtin_unsigned_long_long; 1363 struct type *builtin_float; 1364 struct type *builtin_double; 1365 struct type *builtin_long_double; 1366 1367 /* This type is used to represent symbol addresses. */ 1368 struct type *builtin_core_addr; 1369 1370 /* This type represents a type that was unrecognized in symbol read-in. */ 1371 struct type *builtin_error; 1372 1373 /* Types used for symbols with no debug information. */ 1374 struct type *nodebug_text_symbol; 1375 struct type *nodebug_text_gnu_ifunc_symbol; 1376 struct type *nodebug_got_plt_symbol; 1377 struct type *nodebug_data_symbol; 1378 struct type *nodebug_unknown_symbol; 1379 struct type *nodebug_tls_symbol; 1380 }; 1381 1382 /* Return the type table for the specified objfile. */ 1383 extern const struct objfile_type *objfile_type (struct objfile *objfile); 1384 1385 1386 /* Explicit floating-point formats. See "floatformat.h". */ 1387 extern const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN]; 1388 extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN]; 1389 extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN]; 1390 extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN]; 1391 extern const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN]; 1392 extern const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN]; 1393 extern const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN]; 1394 extern const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN]; 1395 extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN]; 1396 extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN]; 1397 extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN]; 1398 extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN]; 1399 1400 1401 /* Allocate space for storing data associated with a particular type. 1402 We ensure that the space is allocated using the same mechanism that 1403 was used to allocate the space for the type structure itself. I.e. 1404 if the type is on an objfile's objfile_obstack, then the space for data 1405 associated with that type will also be allocated on the objfile_obstack. 1406 If the type is not associated with any particular objfile (such as 1407 builtin types), then the data space will be allocated with xmalloc, 1408 the same as for the type structure. */ 1409 1410 #define TYPE_ALLOC(t,size) \ 1411 (TYPE_OBJFILE_OWNED (t) \ 1412 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \ 1413 : xmalloc (size)) 1414 1415 #define TYPE_ZALLOC(t,size) \ 1416 (TYPE_OBJFILE_OWNED (t) \ 1417 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \ 1418 0, size) \ 1419 : xzalloc (size)) 1420 1421 /* Use alloc_type to allocate a type owned by an objfile. 1422 Use alloc_type_arch to allocate a type owned by an architecture. 1423 Use alloc_type_copy to allocate a type with the same owner as a 1424 pre-existing template type, no matter whether objfile or gdbarch. */ 1425 extern struct type *alloc_type (struct objfile *); 1426 extern struct type *alloc_type_arch (struct gdbarch *); 1427 extern struct type *alloc_type_copy (const struct type *); 1428 1429 /* Return the type's architecture. For types owned by an architecture, 1430 that architecture is returned. For types owned by an objfile, that 1431 objfile's architecture is returned. */ 1432 extern struct gdbarch *get_type_arch (const struct type *); 1433 1434 /* Helper function to construct objfile-owned types. */ 1435 extern struct type *init_type (enum type_code, int, int, const char *, 1436 struct objfile *); 1437 1438 /* Helper functions to construct architecture-owned types. */ 1439 extern struct type *arch_type (struct gdbarch *, enum type_code, int, char *); 1440 extern struct type *arch_integer_type (struct gdbarch *, int, int, char *); 1441 extern struct type *arch_character_type (struct gdbarch *, int, int, char *); 1442 extern struct type *arch_boolean_type (struct gdbarch *, int, int, char *); 1443 extern struct type *arch_float_type (struct gdbarch *, int, char *, 1444 const struct floatformat **); 1445 extern struct type *arch_complex_type (struct gdbarch *, char *, 1446 struct type *); 1447 1448 /* Helper functions to construct a struct or record type. An 1449 initially empty type is created using arch_composite_type(). 1450 Fields are then added using append_composite_type_field*(). A union 1451 type has its size set to the largest field. A struct type has each 1452 field packed against the previous. */ 1453 1454 extern struct type *arch_composite_type (struct gdbarch *gdbarch, 1455 char *name, enum type_code code); 1456 extern void append_composite_type_field (struct type *t, char *name, 1457 struct type *field); 1458 extern void append_composite_type_field_aligned (struct type *t, 1459 char *name, 1460 struct type *field, 1461 int alignment); 1462 struct field *append_composite_type_field_raw (struct type *t, char *name, 1463 struct type *field); 1464 1465 /* Helper functions to construct a bit flags type. An initially empty 1466 type is created using arch_flag_type(). Flags are then added using 1467 append_flag_type_flag(). */ 1468 extern struct type *arch_flags_type (struct gdbarch *gdbarch, 1469 char *name, int length); 1470 extern void append_flags_type_flag (struct type *type, int bitpos, char *name); 1471 1472 extern void make_vector_type (struct type *array_type); 1473 extern struct type *init_vector_type (struct type *elt_type, int n); 1474 1475 extern struct type *lookup_reference_type (struct type *); 1476 1477 extern struct type *make_reference_type (struct type *, struct type **); 1478 1479 extern struct type *make_cv_type (int, int, struct type *, struct type **); 1480 1481 extern struct type *make_restrict_type (struct type *); 1482 1483 extern void replace_type (struct type *, struct type *); 1484 1485 extern int address_space_name_to_int (struct gdbarch *, char *); 1486 1487 extern const char *address_space_int_to_name (struct gdbarch *, int); 1488 1489 extern struct type *make_type_with_address_space (struct type *type, 1490 int space_identifier); 1491 1492 extern struct type *lookup_memberptr_type (struct type *, struct type *); 1493 1494 extern struct type *lookup_methodptr_type (struct type *); 1495 1496 extern void smash_to_method_type (struct type *type, struct type *domain, 1497 struct type *to_type, struct field *args, 1498 int nargs, int varargs); 1499 1500 extern void smash_to_memberptr_type (struct type *, struct type *, 1501 struct type *); 1502 1503 extern void smash_to_methodptr_type (struct type *, struct type *); 1504 1505 extern struct type *allocate_stub_method (struct type *); 1506 1507 extern const char *type_name_no_tag (const struct type *); 1508 1509 extern const char *type_name_no_tag_or_error (struct type *type); 1510 1511 extern struct type *lookup_struct_elt_type (struct type *, char *, int); 1512 1513 extern struct type *make_pointer_type (struct type *, struct type **); 1514 1515 extern struct type *lookup_pointer_type (struct type *); 1516 1517 extern struct type *make_function_type (struct type *, struct type **); 1518 1519 extern struct type *lookup_function_type (struct type *); 1520 1521 extern struct type *lookup_function_type_with_arguments (struct type *, 1522 int, 1523 struct type **); 1524 1525 extern struct type *create_range_type (struct type *, struct type *, LONGEST, 1526 LONGEST); 1527 1528 extern struct type *create_array_type (struct type *, struct type *, 1529 struct type *); 1530 extern struct type *lookup_array_range_type (struct type *, LONGEST, LONGEST); 1531 1532 extern struct type *create_string_type (struct type *, struct type *, 1533 struct type *); 1534 extern struct type *lookup_string_range_type (struct type *, LONGEST, LONGEST); 1535 1536 extern struct type *create_set_type (struct type *, struct type *); 1537 1538 extern struct type *lookup_unsigned_typename (const struct language_defn *, 1539 struct gdbarch *, const char *); 1540 1541 extern struct type *lookup_signed_typename (const struct language_defn *, 1542 struct gdbarch *, const char *); 1543 1544 extern struct type *check_typedef (struct type *); 1545 1546 #define CHECK_TYPEDEF(TYPE) \ 1547 do { \ 1548 (TYPE) = check_typedef (TYPE); \ 1549 } while (0) 1550 1551 extern void check_stub_method_group (struct type *, int); 1552 1553 extern char *gdb_mangle_name (struct type *, int, int); 1554 1555 extern struct type *lookup_typename (const struct language_defn *, 1556 struct gdbarch *, const char *, 1557 const struct block *, int); 1558 1559 extern struct type *lookup_template_type (char *, struct type *, 1560 const struct block *); 1561 1562 extern int get_vptr_fieldno (struct type *, struct type **); 1563 1564 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *); 1565 1566 extern int get_array_bounds (struct type *type, LONGEST *low_bound, 1567 LONGEST *high_bound); 1568 1569 extern int class_types_same_p (const struct type *, const struct type *); 1570 1571 extern int is_ancestor (struct type *, struct type *); 1572 1573 extern int is_public_ancestor (struct type *, struct type *); 1574 1575 extern int is_unique_ancestor (struct type *, struct value *); 1576 1577 /* Overload resolution */ 1578 1579 #define LENGTH_MATCH(bv) ((bv)->rank[0]) 1580 1581 /* Badness if parameter list length doesn't match arg list length. */ 1582 extern const struct rank LENGTH_MISMATCH_BADNESS; 1583 1584 /* Dummy badness value for nonexistent parameter positions. */ 1585 extern const struct rank TOO_FEW_PARAMS_BADNESS; 1586 /* Badness if no conversion among types. */ 1587 extern const struct rank INCOMPATIBLE_TYPE_BADNESS; 1588 1589 /* Badness of an exact match. */ 1590 extern const struct rank EXACT_MATCH_BADNESS; 1591 1592 /* Badness of integral promotion. */ 1593 extern const struct rank INTEGER_PROMOTION_BADNESS; 1594 /* Badness of floating promotion. */ 1595 extern const struct rank FLOAT_PROMOTION_BADNESS; 1596 /* Badness of converting a derived class pointer 1597 to a base class pointer. */ 1598 extern const struct rank BASE_PTR_CONVERSION_BADNESS; 1599 /* Badness of integral conversion. */ 1600 extern const struct rank INTEGER_CONVERSION_BADNESS; 1601 /* Badness of floating conversion. */ 1602 extern const struct rank FLOAT_CONVERSION_BADNESS; 1603 /* Badness of integer<->floating conversions. */ 1604 extern const struct rank INT_FLOAT_CONVERSION_BADNESS; 1605 /* Badness of conversion of pointer to void pointer. */ 1606 extern const struct rank VOID_PTR_CONVERSION_BADNESS; 1607 /* Badness of conversion to boolean. */ 1608 extern const struct rank BOOL_CONVERSION_BADNESS; 1609 /* Badness of converting derived to base class. */ 1610 extern const struct rank BASE_CONVERSION_BADNESS; 1611 /* Badness of converting from non-reference to reference. */ 1612 extern const struct rank REFERENCE_CONVERSION_BADNESS; 1613 /* Badness of converting integer 0 to NULL pointer. */ 1614 extern const struct rank NULL_POINTER_CONVERSION; 1615 1616 /* Non-standard conversions allowed by the debugger */ 1617 /* Converting a pointer to an int is usually OK. */ 1618 extern const struct rank NS_POINTER_CONVERSION_BADNESS; 1619 1620 /* Badness of converting a (non-zero) integer constant 1621 to a pointer. */ 1622 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS; 1623 1624 extern struct rank sum_ranks (struct rank a, struct rank b); 1625 extern int compare_ranks (struct rank a, struct rank b); 1626 1627 extern int compare_badness (struct badness_vector *, struct badness_vector *); 1628 1629 extern struct badness_vector *rank_function (struct type **, int, 1630 struct value **, int); 1631 1632 extern struct rank rank_one_type (struct type *, struct type *, 1633 struct value *); 1634 1635 extern void recursive_dump_type (struct type *, int); 1636 1637 extern int field_is_static (struct field *); 1638 1639 /* printcmd.c */ 1640 1641 extern void print_scalar_formatted (const void *, struct type *, 1642 const struct value_print_options *, 1643 int, struct ui_file *); 1644 1645 extern int can_dereference (struct type *); 1646 1647 extern int is_integral_type (struct type *); 1648 1649 extern int is_scalar_type_recursive (struct type *); 1650 1651 extern void maintenance_print_type (char *, int); 1652 1653 extern htab_t create_copied_types_hash (struct objfile *objfile); 1654 1655 extern struct type *copy_type_recursive (struct objfile *objfile, 1656 struct type *type, 1657 htab_t copied_types); 1658 1659 extern struct type *copy_type (const struct type *type); 1660 1661 extern int types_equal (struct type *, struct type *); 1662 1663 #endif /* GDBTYPES_H */ 1664