1 /* Internal type definitions for GDB. 2 3 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 4 2001, 2002, 2003, 2004 Free Software Foundation, Inc. 5 6 Contributed by Cygnus Support, using pieces from other GDB modules. 7 8 This file is part of GDB. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 2 of the License, or 13 (at your option) any later version. 14 15 This program is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 GNU General Public License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software 22 Foundation, Inc., 59 Temple Place - Suite 330, 23 Boston, MA 02111-1307, USA. */ 24 25 #if !defined (GDBTYPES_H) 26 #define GDBTYPES_H 1 27 28 /* Forward declarations for prototypes. */ 29 struct field; 30 struct block; 31 32 /* Codes for `fundamental types'. This is a monstrosity based on the 33 bogus notion that there are certain compiler-independent 34 `fundamental types'. None of these is well-defined (how big is 35 FT_SHORT? Does it depend on the language? How does the 36 language-specific code know which type to correlate to FT_SHORT?) */ 37 38 #define FT_VOID 0 39 #define FT_BOOLEAN 1 40 #define FT_CHAR 2 /* we use this for not-unsigned C/C++ chars */ 41 #define FT_SIGNED_CHAR 3 /* we use this for C++ signed chars */ 42 #define FT_UNSIGNED_CHAR 4 /* we use this for C/C++ unsigned chars */ 43 #define FT_SHORT 5 44 #define FT_SIGNED_SHORT 6 45 #define FT_UNSIGNED_SHORT 7 46 #define FT_INTEGER 8 47 #define FT_SIGNED_INTEGER 9 48 #define FT_UNSIGNED_INTEGER 10 49 #define FT_LONG 11 50 #define FT_SIGNED_LONG 12 51 #define FT_UNSIGNED_LONG 13 52 #define FT_LONG_LONG 14 53 #define FT_SIGNED_LONG_LONG 15 54 #define FT_UNSIGNED_LONG_LONG 16 55 #define FT_FLOAT 17 56 #define FT_DBL_PREC_FLOAT 18 57 #define FT_EXT_PREC_FLOAT 19 58 #define FT_COMPLEX 20 59 #define FT_DBL_PREC_COMPLEX 21 60 #define FT_EXT_PREC_COMPLEX 22 61 #define FT_STRING 23 62 #define FT_FIXED_DECIMAL 24 63 #define FT_FLOAT_DECIMAL 25 64 #define FT_BYTE 26 65 #define FT_UNSIGNED_BYTE 27 66 #define FT_TEMPLATE_ARG 28 67 68 #define FT_NUM_MEMBERS 29 /* Highest FT_* above, plus one. */ 69 70 /* Some macros for char-based bitfields. */ 71 72 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7))) 73 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7))) 74 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7))) 75 #define B_TYPE unsigned char 76 #define B_BYTES(x) ( 1 + ((x)>>3) ) 77 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x)) 78 79 /* Different kinds of data types are distinguished by the `code' field. */ 80 81 enum type_code 82 { 83 TYPE_CODE_UNDEF, /* Not used; catches errors */ 84 TYPE_CODE_PTR, /* Pointer type */ 85 86 /* Array type with lower & upper bounds. 87 88 Regardless of the language, GDB represents multidimensional 89 array types the way C does: as arrays of arrays. So an 90 instance of a GDB array type T can always be seen as a series 91 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in 92 memory. 93 94 Row-major languages like C lay out multi-dimensional arrays so 95 that incrementing the rightmost index in a subscripting 96 expression results in the smallest change in the address of the 97 element referred to. Column-major languages like Fortran lay 98 them out so that incrementing the leftmost index results in the 99 smallest change. 100 101 This means that, in column-major languages, working our way 102 from type to target type corresponds to working through indices 103 from right to left, not left to right. */ 104 TYPE_CODE_ARRAY, 105 106 TYPE_CODE_STRUCT, /* C struct or Pascal record */ 107 TYPE_CODE_UNION, /* C union or Pascal variant part */ 108 TYPE_CODE_ENUM, /* Enumeration type */ 109 TYPE_CODE_FUNC, /* Function type */ 110 TYPE_CODE_INT, /* Integer type */ 111 112 /* Floating type. This is *NOT* a complex type. Beware, there are parts 113 of GDB which bogusly assume that TYPE_CODE_FLT can mean complex. */ 114 TYPE_CODE_FLT, 115 116 /* Void type. The length field specifies the length (probably always 117 one) which is used in pointer arithmetic involving pointers to 118 this type, but actually dereferencing such a pointer is invalid; 119 a void type has no length and no actual representation in memory 120 or registers. A pointer to a void type is a generic pointer. */ 121 TYPE_CODE_VOID, 122 123 TYPE_CODE_SET, /* Pascal sets */ 124 TYPE_CODE_RANGE, /* Range (integers within spec'd bounds) */ 125 126 /* A string type which is like an array of character but prints 127 differently (at least for (the deleted) CHILL). It does not 128 contain a length field as Pascal strings (for many Pascals, 129 anyway) do; if we want to deal with such strings, we should use 130 a new type code. */ 131 TYPE_CODE_STRING, 132 133 /* String of bits; like TYPE_CODE_SET but prints differently (at 134 least for (the deleted) CHILL). */ 135 TYPE_CODE_BITSTRING, 136 137 /* Unknown type. The length field is valid if we were able to 138 deduce that much about the type, or 0 if we don't even know that. */ 139 TYPE_CODE_ERROR, 140 141 /* C++ */ 142 TYPE_CODE_MEMBER, /* Member type */ 143 TYPE_CODE_METHOD, /* Method type */ 144 TYPE_CODE_REF, /* C++ Reference types */ 145 146 TYPE_CODE_CHAR, /* *real* character type */ 147 148 /* Boolean type. 0 is false, 1 is true, and other values are non-boolean 149 (e.g. FORTRAN "logical" used as unsigned int). */ 150 TYPE_CODE_BOOL, 151 152 /* Fortran */ 153 TYPE_CODE_COMPLEX, /* Complex float */ 154 155 TYPE_CODE_TYPEDEF, 156 TYPE_CODE_TEMPLATE, /* C++ template */ 157 TYPE_CODE_TEMPLATE_ARG, /* C++ template arg */ 158 159 TYPE_CODE_NAMESPACE /* C++ namespace. */ 160 }; 161 162 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an 163 alias for TYPE_CODE_STRUCT. This is for DWARF, which has a distinct 164 "class" attribute. Perhaps we should actually have a separate TYPE_CODE 165 so that we can print "class" or "struct" depending on what the debug 166 info said. It's not clear we should bother. */ 167 168 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT 169 170 /* Some bits for the type's flags word, and macros to test them. */ 171 172 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT, the 173 type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */ 174 175 #define TYPE_FLAG_UNSIGNED (1 << 0) 176 #define TYPE_UNSIGNED(t) (TYPE_FLAGS (t) & TYPE_FLAG_UNSIGNED) 177 178 /* No sign for this type. In C++, "char", "signed char", and "unsigned 179 char" are distinct types; so we need an extra flag to indicate the 180 absence of a sign! */ 181 182 #define TYPE_FLAG_NOSIGN (1 << 1) 183 #define TYPE_NOSIGN(t) (TYPE_FLAGS (t) & TYPE_FLAG_NOSIGN) 184 185 /* This appears in a type's flags word if it is a stub type (e.g., if 186 someone referenced a type that wasn't defined in a source file 187 via (struct sir_not_appearing_in_this_film *)). */ 188 189 #define TYPE_FLAG_STUB (1 << 2) 190 #define TYPE_STUB(t) (TYPE_FLAGS (t) & TYPE_FLAG_STUB) 191 192 /* The target type of this type is a stub type, and this type needs to 193 be updated if it gets un-stubbed in check_typedef. 194 Used for arrays and ranges, in which TYPE_LENGTH of the array/range 195 gets set based on the TYPE_LENGTH of the target type. 196 Also, set for TYPE_CODE_TYPEDEF. */ 197 198 #define TYPE_FLAG_TARGET_STUB (1 << 3) 199 #define TYPE_TARGET_STUB(t) (TYPE_FLAGS (t) & TYPE_FLAG_TARGET_STUB) 200 201 /* Static type. If this is set, the corresponding type had 202 * a static modifier. 203 * Note: This may be unnecessary, since static data members 204 * are indicated by other means (bitpos == -1) 205 */ 206 207 #define TYPE_FLAG_STATIC (1 << 4) 208 #define TYPE_STATIC(t) (TYPE_FLAGS (t) & TYPE_FLAG_STATIC) 209 210 /* Constant type. If this is set, the corresponding type has a 211 * const modifier. 212 */ 213 214 #define TYPE_FLAG_CONST (1 << 5) 215 #define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_CONST) 216 217 /* Volatile type. If this is set, the corresponding type has a 218 * volatile modifier. 219 */ 220 221 #define TYPE_FLAG_VOLATILE (1 << 6) 222 #define TYPE_VOLATILE(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_VOLATILE) 223 224 225 /* This is a function type which appears to have a prototype. We need this 226 for function calls in order to tell us if it's necessary to coerce the args, 227 or to just do the standard conversions. This is used with a short field. */ 228 229 #define TYPE_FLAG_PROTOTYPED (1 << 7) 230 #define TYPE_PROTOTYPED(t) (TYPE_FLAGS (t) & TYPE_FLAG_PROTOTYPED) 231 232 /* This flag is used to indicate that processing for this type 233 is incomplete. 234 235 (Mostly intended for HP platforms, where class methods, for 236 instance, can be encountered before their classes in the debug 237 info; the incomplete type has to be marked so that the class and 238 the method can be assigned correct types.) */ 239 240 #define TYPE_FLAG_INCOMPLETE (1 << 8) 241 #define TYPE_INCOMPLETE(t) (TYPE_FLAGS (t) & TYPE_FLAG_INCOMPLETE) 242 243 /* Instruction-space delimited type. This is for Harvard architectures 244 which have separate instruction and data address spaces (and perhaps 245 others). 246 247 GDB usually defines a flat address space that is a superset of the 248 architecture's two (or more) address spaces, but this is an extension 249 of the architecture's model. 250 251 If TYPE_FLAG_INST is set, an object of the corresponding type 252 resides in instruction memory, even if its address (in the extended 253 flat address space) does not reflect this. 254 255 Similarly, if TYPE_FLAG_DATA is set, then an object of the 256 corresponding type resides in the data memory space, even if 257 this is not indicated by its (flat address space) address. 258 259 If neither flag is set, the default space for functions / methods 260 is instruction space, and for data objects is data memory. */ 261 262 #define TYPE_FLAG_CODE_SPACE (1 << 9) 263 #define TYPE_CODE_SPACE(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_CODE_SPACE) 264 265 #define TYPE_FLAG_DATA_SPACE (1 << 10) 266 #define TYPE_DATA_SPACE(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_DATA_SPACE) 267 268 /* FIXME drow/2002-06-03: Only used for methods, but applies as well 269 to functions. */ 270 271 #define TYPE_FLAG_VARARGS (1 << 11) 272 #define TYPE_VARARGS(t) (TYPE_FLAGS (t) & TYPE_FLAG_VARARGS) 273 274 /* Identify a vector type. Gcc is handling this by adding an extra 275 attribute to the array type. We slurp that in as a new flag of a 276 type. This is used only in dwarf2read.c. */ 277 #define TYPE_FLAG_VECTOR (1 << 12) 278 #define TYPE_VECTOR(t) (TYPE_FLAGS (t) & TYPE_FLAG_VECTOR) 279 280 /* Address class flags. Some environments provide for pointers whose 281 size is different from that of a normal pointer or address types 282 where the bits are interpreted differently than normal addresses. The 283 TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific 284 ways to represent these different types of address classes. */ 285 #define TYPE_FLAG_ADDRESS_CLASS_1 (1 << 13) 286 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \ 287 & TYPE_FLAG_ADDRESS_CLASS_1) 288 #define TYPE_FLAG_ADDRESS_CLASS_2 (1 << 14) 289 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \ 290 & TYPE_FLAG_ADDRESS_CLASS_2) 291 #define TYPE_FLAG_ADDRESS_CLASS_ALL (TYPE_FLAG_ADDRESS_CLASS_1 \ 292 | TYPE_FLAG_ADDRESS_CLASS_2) 293 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \ 294 & TYPE_FLAG_ADDRESS_CLASS_ALL) 295 296 /* The debugging formats (especially STABS) do not contain enough information 297 to represent all Ada types---especially those whose size depends on 298 dynamic quantities. Therefore, the GNAT Ada compiler includes 299 extra information in the form of additional type definitions 300 connected by naming conventions. This flag indicates that the 301 type is an ordinary (unencoded) GDB type that has been created from 302 the necessary run-time information, and does not need further 303 interpretation. Optionally marks ordinary, fixed-size GDB type. */ 304 305 #define TYPE_FLAG_FIXED_INSTANCE (1 << 15) 306 307 /* Array bound type. */ 308 enum array_bound_type 309 { 310 BOUND_SIMPLE = 0, 311 BOUND_BY_VALUE_IN_REG, 312 BOUND_BY_REF_IN_REG, 313 BOUND_BY_VALUE_ON_STACK, 314 BOUND_BY_REF_ON_STACK, 315 BOUND_CANNOT_BE_DETERMINED 316 }; 317 318 /* This structure is space-critical. 319 Its layout has been tweaked to reduce the space used. */ 320 321 struct main_type 322 { 323 /* Code for kind of type */ 324 325 ENUM_BITFIELD(type_code) code : 8; 326 327 /* Array bounds. These fields appear at this location because 328 they pack nicely here. */ 329 330 ENUM_BITFIELD(array_bound_type) upper_bound_type : 4; 331 ENUM_BITFIELD(array_bound_type) lower_bound_type : 4; 332 333 /* Name of this type, or NULL if none. 334 335 This is used for printing only, except by poorly designed C++ code. 336 For looking up a name, look for a symbol in the VAR_DOMAIN. */ 337 338 char *name; 339 340 /* Tag name for this type, or NULL if none. This means that the 341 name of the type consists of a keyword followed by the tag name. 342 Which keyword is determined by the type code ("struct" for 343 TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages 344 with this feature. 345 346 This is used for printing only, except by poorly designed C++ code. 347 For looking up a name, look for a symbol in the STRUCT_DOMAIN. 348 One more legitimate use is that if TYPE_FLAG_STUB is set, this is 349 the name to use to look for definitions in other files. */ 350 351 char *tag_name; 352 353 /* Every type is now associated with a particular objfile, and the 354 type is allocated on the objfile_obstack for that objfile. One problem 355 however, is that there are times when gdb allocates new types while 356 it is not in the process of reading symbols from a particular objfile. 357 Fortunately, these happen when the type being created is a derived 358 type of an existing type, such as in lookup_pointer_type(). So 359 we can just allocate the new type using the same objfile as the 360 existing type, but to do this we need a backpointer to the objfile 361 from the existing type. Yes this is somewhat ugly, but without 362 major overhaul of the internal type system, it can't be avoided 363 for now. */ 364 365 struct objfile *objfile; 366 367 /* For a pointer type, describes the type of object pointed to. 368 For an array type, describes the type of the elements. 369 For a function or method type, describes the type of the return value. 370 For a range type, describes the type of the full range. 371 For a complex type, describes the type of each coordinate. 372 Unused otherwise. */ 373 374 struct type *target_type; 375 376 /* Flags about this type. */ 377 378 int flags; 379 380 /* Number of fields described for this type */ 381 382 short nfields; 383 384 /* Field number of the virtual function table pointer in 385 VPTR_BASETYPE. If -1, we were unable to find the virtual 386 function table pointer in initial symbol reading, and 387 fill_in_vptr_fieldno should be called to find it if possible. 388 389 Unused if this type does not have virtual functions. */ 390 391 short vptr_fieldno; 392 393 /* For structure and union types, a description of each field. 394 For set and pascal array types, there is one "field", 395 whose type is the domain type of the set or array. 396 For range types, there are two "fields", 397 the minimum and maximum values (both inclusive). 398 For enum types, each possible value is described by one "field". 399 For a function or method type, a "field" for each parameter. 400 For C++ classes, there is one field for each base class (if it is 401 a derived class) plus one field for each class data member. Member 402 functions are recorded elsewhere. 403 404 Using a pointer to a separate array of fields 405 allows all types to have the same size, which is useful 406 because we can allocate the space for a type before 407 we know what to put in it. */ 408 409 struct field 410 { 411 union field_location 412 { 413 /* Position of this field, counting in bits from start of 414 containing structure. 415 For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB. 416 For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB. 417 For a range bound or enum value, this is the value itself. */ 418 419 int bitpos; 420 421 /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr 422 is the location (in the target) of the static field. 423 Otherwise, physname is the mangled label of the static field. */ 424 425 CORE_ADDR physaddr; 426 char *physname; 427 } 428 loc; 429 430 /* For a function or member type, this is 1 if the argument is marked 431 artificial. Artificial arguments should not be shown to the 432 user. */ 433 unsigned int artificial : 1; 434 435 /* This flag is zero for non-static fields, 1 for fields whose location 436 is specified by the label loc.physname, and 2 for fields whose location 437 is specified by loc.physaddr. */ 438 439 unsigned int static_kind : 2; 440 441 /* Size of this field, in bits, or zero if not packed. 442 For an unpacked field, the field's type's length 443 says how many bytes the field occupies. */ 444 445 unsigned int bitsize : 29; 446 447 /* In a struct or union type, type of this field. 448 In a function or member type, type of this argument. 449 In an array type, the domain-type of the array. */ 450 451 struct type *type; 452 453 /* Name of field, value or argument. 454 NULL for range bounds, array domains, and member function 455 arguments. */ 456 457 char *name; 458 459 } *fields; 460 461 /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE 462 is the base class which defined the virtual function table pointer. 463 464 For types that are pointer to member types (TYPE_CODE_MEMBER), 465 VPTR_BASETYPE is the type that this pointer is a member of. 466 467 For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate 468 type that contains the method. 469 470 Unused otherwise. */ 471 472 struct type *vptr_basetype; 473 474 /* Slot to point to additional language-specific fields of this type. */ 475 476 union type_specific 477 { 478 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to 479 cplus_struct_default, a default static instance of a struct 480 cplus_struct_type. */ 481 482 struct cplus_struct_type *cplus_stuff; 483 484 /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to the 485 floatformat object that describes the floating-point value 486 that resides within the type. */ 487 488 const struct floatformat *floatformat; 489 } type_specific; 490 }; 491 492 /* A ``struct type'' describes a particular instance of a type, with 493 some particular qualification. */ 494 struct type 495 { 496 /* Type that is a pointer to this type. 497 NULL if no such pointer-to type is known yet. 498 The debugger may add the address of such a type 499 if it has to construct one later. */ 500 501 struct type *pointer_type; 502 503 /* C++: also need a reference type. */ 504 505 struct type *reference_type; 506 507 /* Variant chain. This points to a type that differs from this one only 508 in qualifiers and length. Currently, the possible qualifiers are 509 const, volatile, code-space, data-space, and address class. The 510 length may differ only when one of the address class flags are set. 511 The variants are linked in a circular ring and share MAIN_TYPE. */ 512 struct type *chain; 513 514 /* Flags specific to this instance of the type, indicating where 515 on the ring we are. */ 516 int instance_flags; 517 518 /* Length of storage for a value of this type. This is what 519 sizeof(type) would return; use it for address arithmetic, 520 memory reads and writes, etc. This size includes padding. For 521 example, an i386 extended-precision floating point value really 522 only occupies ten bytes, but most ABI's declare its size to be 523 12 bytes, to preserve alignment. A `struct type' representing 524 such a floating-point type would have a `length' value of 12, 525 even though the last two bytes are unused. 526 527 There's a bit of a host/target mess here, if you're concerned 528 about machines whose bytes aren't eight bits long, or who don't 529 have byte-addressed memory. Various places pass this to memcpy 530 and such, meaning it must be in units of host bytes. Various 531 other places expect they can calculate addresses by adding it 532 and such, meaning it must be in units of target bytes. For 533 some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8 534 and TARGET_CHAR_BIT will be (say) 32, this is a problem. 535 536 One fix would be to make this field in bits (requiring that it 537 always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) --- 538 the other choice would be to make it consistently in units of 539 HOST_CHAR_BIT. However, this would still fail to address 540 machines based on a ternary or decimal representation. */ 541 542 unsigned length; 543 544 /* Core type, shared by a group of qualified types. */ 545 struct main_type *main_type; 546 }; 547 548 #define NULL_TYPE ((struct type *) 0) 549 550 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION 551 nodes. */ 552 553 struct cplus_struct_type 554 { 555 /* Number of base classes this type derives from. The baseclasses are 556 stored in the first N_BASECLASSES fields (i.e. the `fields' field of 557 the struct type). I think only the `type' field of such a field has 558 any meaning. */ 559 560 short n_baseclasses; 561 562 /* Number of methods with unique names. All overloaded methods with 563 the same name count only once. */ 564 565 short nfn_fields; 566 567 /* Number of methods described for this type, not including the 568 methods that it derives from. */ 569 570 short nfn_fields_total; 571 572 /* The "declared_type" field contains a code saying how the 573 user really declared this type, e.g., "class s", "union s", 574 "struct s". 575 The 3 above things come out from the C++ compiler looking like classes, 576 but we keep track of the real declaration so we can give 577 the correct information on "ptype". (Note: TEMPLATE may not 578 belong in this list...) */ 579 580 #define DECLARED_TYPE_CLASS 0 581 #define DECLARED_TYPE_UNION 1 582 #define DECLARED_TYPE_STRUCT 2 583 #define DECLARED_TYPE_TEMPLATE 3 584 short declared_type; /* One of the above codes */ 585 586 /* For derived classes, the number of base classes is given by n_baseclasses 587 and virtual_field_bits is a bit vector containing one bit per base class. 588 If the base class is virtual, the corresponding bit will be set. 589 I.E, given: 590 591 class A{}; 592 class B{}; 593 class C : public B, public virtual A {}; 594 595 B is a baseclass of C; A is a virtual baseclass for C. 596 This is a C++ 2.0 language feature. */ 597 598 B_TYPE *virtual_field_bits; 599 600 /* For classes with private fields, the number of fields is given by 601 nfields and private_field_bits is a bit vector containing one bit 602 per field. 603 If the field is private, the corresponding bit will be set. */ 604 605 B_TYPE *private_field_bits; 606 607 /* For classes with protected fields, the number of fields is given by 608 nfields and protected_field_bits is a bit vector containing one bit 609 per field. 610 If the field is private, the corresponding bit will be set. */ 611 612 B_TYPE *protected_field_bits; 613 614 /* for classes with fields to be ignored, either this is optimized out 615 or this field has length 0 */ 616 617 B_TYPE *ignore_field_bits; 618 619 /* For classes, structures, and unions, a description of each field, 620 which consists of an overloaded name, followed by the types of 621 arguments that the method expects, and then the name after it 622 has been renamed to make it distinct. 623 624 fn_fieldlists points to an array of nfn_fields of these. */ 625 626 struct fn_fieldlist 627 { 628 629 /* The overloaded name. */ 630 631 char *name; 632 633 /* The number of methods with this name. */ 634 635 int length; 636 637 /* The list of methods. */ 638 639 struct fn_field 640 { 641 642 /* If is_stub is clear, this is the mangled name which we can 643 look up to find the address of the method (FIXME: it would 644 be cleaner to have a pointer to the struct symbol here 645 instead). */ 646 647 /* If is_stub is set, this is the portion of the mangled 648 name which specifies the arguments. For example, "ii", 649 if there are two int arguments, or "" if there are no 650 arguments. See gdb_mangle_name for the conversion from this 651 format to the one used if is_stub is clear. */ 652 653 char *physname; 654 655 /* The function type for the method. 656 (This comment used to say "The return value of the method", 657 but that's wrong. The function type 658 is expected here, i.e. something with TYPE_CODE_FUNC, 659 and *not* the return-value type). */ 660 661 struct type *type; 662 663 /* For virtual functions. 664 First baseclass that defines this virtual function. */ 665 666 struct type *fcontext; 667 668 /* Attributes. */ 669 670 unsigned int is_const:1; 671 unsigned int is_volatile:1; 672 unsigned int is_private:1; 673 unsigned int is_protected:1; 674 unsigned int is_public:1; 675 unsigned int is_abstract:1; 676 unsigned int is_static:1; 677 unsigned int is_final:1; 678 unsigned int is_synchronized:1; 679 unsigned int is_native:1; 680 unsigned int is_artificial:1; 681 682 /* A stub method only has some fields valid (but they are enough 683 to reconstruct the rest of the fields). */ 684 unsigned int is_stub:1; 685 686 /* C++ method that is inlined */ 687 unsigned int is_inlined:1; 688 689 /* Unused. */ 690 unsigned int dummy:3; 691 692 /* Index into that baseclass's virtual function table, 693 minus 2; else if static: VOFFSET_STATIC; else: 0. */ 694 695 unsigned int voffset:16; 696 697 #define VOFFSET_STATIC 1 698 699 } 700 *fn_fields; 701 702 } 703 *fn_fieldlists; 704 705 /* If this "struct type" describes a template, then it 706 * has arguments. "template_args" points to an array of 707 * template arg descriptors, of length "ntemplate_args". 708 * The only real information in each of these template arg descriptors 709 * is a name. "type" will typically just point to a "struct type" with 710 * the placeholder TYPE_CODE_TEMPLATE_ARG type. 711 */ 712 short ntemplate_args; 713 struct template_arg 714 { 715 char *name; 716 struct type *type; 717 } 718 *template_args; 719 720 /* If this "struct type" describes a template, it has a list 721 * of instantiations. "instantiations" is a pointer to an array 722 * of type's, one representing each instantiation. There 723 * are "ninstantiations" elements in this array. 724 */ 725 short ninstantiations; 726 struct type **instantiations; 727 728 /* The following points to information relevant to the runtime model 729 * of the compiler. 730 * Currently being used only for HP's ANSI C++ compiler. 731 * (This type may have to be changed/enhanced for other compilers.) 732 * 733 * RUNTIME_PTR is NULL if there is no runtime information (currently 734 * this means the type was not compiled by HP aCC). 735 * 736 * Fields in structure pointed to: 737 * ->HAS_VTABLE : 0 => no virtual table, 1 => vtable present 738 * 739 * ->PRIMARY_BASE points to the first non-virtual base class that has 740 * a virtual table. 741 * 742 * ->VIRTUAL_BASE_LIST points to a list of struct type * pointers that 743 * point to the type information for all virtual bases among this type's 744 * ancestors. 745 */ 746 struct runtime_info 747 { 748 short has_vtable; 749 struct type *primary_base; 750 struct type **virtual_base_list; 751 } 752 *runtime_ptr; 753 754 /* Pointer to information about enclosing scope, if this is a 755 * local type. If it is not a local type, this is NULL 756 */ 757 struct local_type_info 758 { 759 char *file; 760 int line; 761 } 762 *localtype_ptr; 763 }; 764 765 /* Struct used in computing virtual base list */ 766 struct vbase 767 { 768 struct type *vbasetype; /* pointer to virtual base */ 769 struct vbase *next; /* next in chain */ 770 }; 771 772 /* Struct used for ranking a function for overload resolution */ 773 struct badness_vector 774 { 775 int length; 776 int *rank; 777 }; 778 779 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the 780 this shared static structure. */ 781 782 extern const struct cplus_struct_type cplus_struct_default; 783 784 extern void allocate_cplus_struct_type (struct type *); 785 786 #define INIT_CPLUS_SPECIFIC(type) \ 787 (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default) 788 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type) 789 #define HAVE_CPLUS_STRUCT(type) \ 790 (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default) 791 792 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags 793 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type 794 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name 795 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name 796 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type 797 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type 798 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type 799 #define TYPE_CHAIN(thistype) (thistype)->chain 800 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef. 801 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type, 802 so you only have to call check_typedef once. Since allocate_value 803 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */ 804 #define TYPE_LENGTH(thistype) (thistype)->length 805 #define TYPE_OBJFILE(thistype) TYPE_MAIN_TYPE(thistype)->objfile 806 #define TYPE_FLAGS(thistype) TYPE_MAIN_TYPE(thistype)->flags 807 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real 808 type, you need to do TYPE_CODE (check_type (this_type)). */ 809 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code 810 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields 811 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->fields 812 #define TYPE_TEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->template_args 813 #define TYPE_INSTANTIATIONS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->instantiations 814 815 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0) 816 #define TYPE_LOW_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 0) 817 #define TYPE_HIGH_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 1) 818 819 /* Moto-specific stuff for FORTRAN arrays */ 820 821 #define TYPE_ARRAY_UPPER_BOUND_TYPE(thistype) \ 822 TYPE_MAIN_TYPE(thistype)->upper_bound_type 823 #define TYPE_ARRAY_LOWER_BOUND_TYPE(thistype) \ 824 TYPE_MAIN_TYPE(thistype)->lower_bound_type 825 826 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \ 827 (TYPE_FIELD_BITPOS((TYPE_FIELD_TYPE((arraytype),0)),1)) 828 829 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \ 830 (TYPE_FIELD_BITPOS((TYPE_FIELD_TYPE((arraytype),0)),0)) 831 832 /* C++ */ 833 834 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype 835 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype 836 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno 837 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields 838 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields 839 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total 840 #define TYPE_NTEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->ntemplate_args 841 #define TYPE_NINSTANTIATIONS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->ninstantiations 842 #define TYPE_DECLARED_TYPE(thistype) TYPE_CPLUS_SPECIFIC(thistype)->declared_type 843 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific 844 #define TYPE_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff 845 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat 846 #define TYPE_BASECLASS(thistype,index) TYPE_MAIN_TYPE(thistype)->fields[index].type 847 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses 848 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_MAIN_TYPE(thistype)->fields[index].name 849 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index) 850 #define BASETYPE_VIA_PUBLIC(thistype, index) \ 851 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index))) 852 853 #define BASETYPE_VIA_VIRTUAL(thistype, index) \ 854 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \ 855 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))) 856 857 #define FIELD_TYPE(thisfld) ((thisfld).type) 858 #define FIELD_NAME(thisfld) ((thisfld).name) 859 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos) 860 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial) 861 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize) 862 #define FIELD_STATIC_KIND(thisfld) ((thisfld).static_kind) 863 #define FIELD_PHYSNAME(thisfld) ((thisfld).loc.physname) 864 #define FIELD_PHYSADDR(thisfld) ((thisfld).loc.physaddr) 865 #define SET_FIELD_PHYSNAME(thisfld, name) \ 866 ((thisfld).static_kind = 1, FIELD_PHYSNAME(thisfld) = (name)) 867 #define SET_FIELD_PHYSADDR(thisfld, name) \ 868 ((thisfld).static_kind = 2, FIELD_PHYSADDR(thisfld) = (name)) 869 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->fields[n] 870 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n)) 871 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n)) 872 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS(TYPE_FIELD(thistype,n)) 873 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n)) 874 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n)) 875 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0) 876 #define TYPE_TEMPLATE_ARG(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->template_args[n] 877 #define TYPE_INSTANTIATION(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->instantiations[n] 878 879 #define TYPE_FIELD_PRIVATE_BITS(thistype) \ 880 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits 881 #define TYPE_FIELD_PROTECTED_BITS(thistype) \ 882 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits 883 #define TYPE_FIELD_IGNORE_BITS(thistype) \ 884 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits 885 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \ 886 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits 887 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \ 888 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)) 889 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \ 890 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)) 891 #define SET_TYPE_FIELD_IGNORE(thistype, n) \ 892 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)) 893 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \ 894 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)) 895 #define TYPE_FIELD_PRIVATE(thistype, n) \ 896 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \ 897 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))) 898 #define TYPE_FIELD_PROTECTED(thistype, n) \ 899 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \ 900 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))) 901 #define TYPE_FIELD_IGNORE(thistype, n) \ 902 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \ 903 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))) 904 #define TYPE_FIELD_VIRTUAL(thistype, n) \ 905 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \ 906 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))) 907 908 #define TYPE_FIELD_STATIC(thistype, n) (TYPE_MAIN_TYPE (thistype)->fields[n].static_kind != 0) 909 #define TYPE_FIELD_STATIC_KIND(thistype, n) TYPE_MAIN_TYPE (thistype)->fields[n].static_kind 910 #define TYPE_FIELD_STATIC_HAS_ADDR(thistype, n) (TYPE_MAIN_TYPE (thistype)->fields[n].static_kind == 2) 911 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_PHYSNAME(TYPE_FIELD(thistype, n)) 912 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_PHYSADDR(TYPE_FIELD(thistype, n)) 913 914 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists 915 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n] 916 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields 917 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name 918 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length 919 920 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n] 921 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname 922 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type 923 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type) 924 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const) 925 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile) 926 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private) 927 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected) 928 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public) 929 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static) 930 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final) 931 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized) 932 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native) 933 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial) 934 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract) 935 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub) 936 #define TYPE_FN_FIELD_INLINED(thisfn, n) ((thisfn)[n].is_inlined) 937 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext) 938 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2) 939 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1) 940 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC) 941 942 #define TYPE_RUNTIME_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->runtime_ptr) 943 #define TYPE_VTABLE(thistype) (TYPE_RUNTIME_PTR(thistype)->has_vtable) 944 #define TYPE_HAS_VTABLE(thistype) (TYPE_RUNTIME_PTR(thistype) && TYPE_VTABLE(thistype)) 945 #define TYPE_PRIMARY_BASE(thistype) (TYPE_RUNTIME_PTR(thistype)->primary_base) 946 #define TYPE_VIRTUAL_BASE_LIST(thistype) (TYPE_RUNTIME_PTR(thistype)->virtual_base_list) 947 948 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr) 949 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file) 950 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line) 951 952 #define TYPE_IS_OPAQUE(thistype) (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) || \ 953 (TYPE_CODE (thistype) == TYPE_CODE_UNION)) && \ 954 (TYPE_NFIELDS (thistype) == 0) && \ 955 (TYPE_CPLUS_SPECIFIC (thistype) && (TYPE_NFN_FIELDS (thistype) == 0))) 956 957 struct builtin_type 958 { 959 /* Address/pointer types. */ 960 961 /* `pointer to data' type. Some target platforms use an implicitly 962 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */ 963 struct type *builtin_data_ptr; 964 965 /* `pointer to function (returning void)' type. Harvard 966 architectures mean that ABI function and code pointers are not 967 interconvertible. Similarly, since ANSI, C standards have 968 explicitly said that pointers to functions and pointers to data 969 are not interconvertible --- that is, you can't cast a function 970 pointer to void * and back, and expect to get the same value. 971 However, all function pointer types are interconvertible, so void 972 (*) () can server as a generic function pointer. */ 973 struct type *builtin_func_ptr; 974 975 /* The target CPU's address type. This is the ISA address size. */ 976 struct type *builtin_core_addr; 977 978 /* Integral types. */ 979 980 /* We use this for the '/c' print format, because c_char is just a 981 one-byte integral type, which languages less laid back than C 982 will print as ... well, a one-byte integral type. */ 983 struct type *builtin_true_char; 984 985 /* Implicit size/sign (based on the the architecture's ABI). */ 986 struct type *builtin_void; 987 struct type *builtin_char; 988 struct type *builtin_short; 989 struct type *builtin_int; 990 struct type *builtin_long; 991 struct type *builtin_signed_char; 992 struct type *builtin_unsigned_char; 993 struct type *builtin_unsigned_short; 994 struct type *builtin_unsigned_int; 995 struct type *builtin_unsigned_long; 996 struct type *builtin_float; 997 struct type *builtin_double; 998 struct type *builtin_long_double; 999 struct type *builtin_complex; 1000 struct type *builtin_double_complex; 1001 struct type *builtin_string; 1002 struct type *builtin_bool; 1003 struct type *builtin_long_long; 1004 struct type *builtin_unsigned_long_long; 1005 }; 1006 1007 /* Return the type table for the specified architecture. */ 1008 extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch); 1009 1010 /* Implicit sizes */ 1011 extern struct type *builtin_type_void; 1012 extern struct type *builtin_type_char; 1013 extern struct type *builtin_type_short; 1014 extern struct type *builtin_type_int; 1015 extern struct type *builtin_type_long; 1016 extern struct type *builtin_type_signed_char; 1017 extern struct type *builtin_type_unsigned_char; 1018 extern struct type *builtin_type_unsigned_short; 1019 extern struct type *builtin_type_unsigned_int; 1020 extern struct type *builtin_type_unsigned_long; 1021 extern struct type *builtin_type_float; 1022 extern struct type *builtin_type_double; 1023 extern struct type *builtin_type_long_double; 1024 extern struct type *builtin_type_complex; 1025 extern struct type *builtin_type_double_complex; 1026 extern struct type *builtin_type_string; 1027 extern struct type *builtin_type_bool; 1028 1029 /* Address/pointer types: */ 1030 /* (C) Language `pointer to data' type. Some target platforms use an 1031 implicitly {sign,zero} -extended 32 bit C language pointer on a 64 1032 bit ISA. */ 1033 extern struct type *builtin_type_void_data_ptr; 1034 1035 /* (C) Language `pointer to function returning void' type. Since 1036 ANSI, C standards have explicitly said that pointers to functions 1037 and pointers to data are not interconvertible --- that is, you 1038 can't cast a function pointer to void * and back, and expect to get 1039 the same value. However, all function pointer types are 1040 interconvertible, so void (*) () can server as a generic function 1041 pointer. */ 1042 extern struct type *builtin_type_void_func_ptr; 1043 1044 /* The target CPU's address type. This is the ISA address size. */ 1045 extern struct type *builtin_type_CORE_ADDR; 1046 /* The symbol table address type. Some object file formats have a 32 1047 bit address type even though the TARGET has a 64 bit pointer type 1048 (cf MIPS). */ 1049 extern struct type *builtin_type_bfd_vma; 1050 1051 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0" 1052 is for when an architecture needs to describe a register that has 1053 no size. */ 1054 extern struct type *builtin_type_int0; 1055 extern struct type *builtin_type_int8; 1056 extern struct type *builtin_type_uint8; 1057 extern struct type *builtin_type_int16; 1058 extern struct type *builtin_type_uint16; 1059 extern struct type *builtin_type_int32; 1060 extern struct type *builtin_type_uint32; 1061 extern struct type *builtin_type_int64; 1062 extern struct type *builtin_type_uint64; 1063 extern struct type *builtin_type_int128; 1064 extern struct type *builtin_type_uint128; 1065 1066 /* SIMD types. We inherit these names from GCC. */ 1067 extern struct type *builtin_type_v4sf; 1068 extern struct type *builtin_type_v4si; 1069 extern struct type *builtin_type_v16qi; 1070 extern struct type *builtin_type_v8qi; 1071 extern struct type *builtin_type_v8hi; 1072 extern struct type *builtin_type_v4hi; 1073 extern struct type *builtin_type_v2si; 1074 1075 /* Type for 64 bit vectors. */ 1076 extern struct type *builtin_type_vec64; 1077 extern struct type *builtin_type_vec64i; 1078 1079 /* Type for 128 bit vectors. */ 1080 extern struct type *builtin_type_vec128; 1081 extern struct type *builtin_type_vec128i; 1082 1083 /* Explicit floating-point formats. See "floatformat.h". */ 1084 extern struct type *builtin_type_ieee_single[BFD_ENDIAN_UNKNOWN]; 1085 extern struct type *builtin_type_ieee_single_big; 1086 extern struct type *builtin_type_ieee_single_little; 1087 extern struct type *builtin_type_ieee_double[BFD_ENDIAN_UNKNOWN]; 1088 extern struct type *builtin_type_ieee_double_big; 1089 extern struct type *builtin_type_ieee_double_little; 1090 extern struct type *builtin_type_ieee_double_littlebyte_bigword; 1091 extern struct type *builtin_type_i387_ext; 1092 extern struct type *builtin_type_m68881_ext; 1093 extern struct type *builtin_type_i960_ext; 1094 extern struct type *builtin_type_m88110_ext; 1095 extern struct type *builtin_type_m88110_harris_ext; 1096 extern struct type *builtin_type_arm_ext[BFD_ENDIAN_UNKNOWN]; 1097 extern struct type *builtin_type_arm_ext_big; 1098 extern struct type *builtin_type_arm_ext_littlebyte_bigword; 1099 extern struct type *builtin_type_ia64_spill[BFD_ENDIAN_UNKNOWN]; 1100 extern struct type *builtin_type_ia64_spill_big; 1101 extern struct type *builtin_type_ia64_spill_little; 1102 extern struct type *builtin_type_ia64_quad[BFD_ENDIAN_UNKNOWN]; 1103 extern struct type *builtin_type_ia64_quad_big; 1104 extern struct type *builtin_type_ia64_quad_little; 1105 1106 /* We use this for the '/c' print format, because builtin_type_char is 1107 just a one-byte integral type, which languages less laid back than 1108 C will print as ... well, a one-byte integral type. */ 1109 extern struct type *builtin_type_true_char; 1110 1111 /* This type represents a type that was unrecognized in symbol 1112 read-in. */ 1113 1114 extern struct type *builtin_type_error; 1115 1116 extern struct type *builtin_type_long_long; 1117 extern struct type *builtin_type_unsigned_long_long; 1118 1119 /* Modula-2 types */ 1120 1121 extern struct type *builtin_type_m2_char; 1122 extern struct type *builtin_type_m2_int; 1123 extern struct type *builtin_type_m2_card; 1124 extern struct type *builtin_type_m2_real; 1125 extern struct type *builtin_type_m2_bool; 1126 1127 /* Fortran (F77) types */ 1128 1129 extern struct type *builtin_type_f_character; 1130 extern struct type *builtin_type_f_integer; 1131 extern struct type *builtin_type_f_integer_s2; 1132 extern struct type *builtin_type_f_logical; 1133 extern struct type *builtin_type_f_logical_s1; 1134 extern struct type *builtin_type_f_logical_s2; 1135 extern struct type *builtin_type_f_real; 1136 extern struct type *builtin_type_f_real_s8; 1137 extern struct type *builtin_type_f_real_s16; 1138 extern struct type *builtin_type_f_complex_s8; 1139 extern struct type *builtin_type_f_complex_s16; 1140 extern struct type *builtin_type_f_complex_s32; 1141 extern struct type *builtin_type_f_void; 1142 1143 /* RTTI for C++ */ 1144 /* extern struct type *builtin_type_cxx_typeinfo; */ 1145 1146 /* Maximum and minimum values of built-in types */ 1147 1148 #define MAX_OF_TYPE(t) \ 1149 (TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \ 1150 : MAX_OF_SIZE(TYPE_LENGTH(t))) 1151 1152 #define MIN_OF_TYPE(t) \ 1153 (TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \ 1154 : MIN_OF_SIZE(TYPE_LENGTH(t))) 1155 1156 /* Allocate space for storing data associated with a particular type. 1157 We ensure that the space is allocated using the same mechanism that 1158 was used to allocate the space for the type structure itself. I.E. 1159 if the type is on an objfile's objfile_obstack, then the space for data 1160 associated with that type will also be allocated on the objfile_obstack. 1161 If the type is not associated with any particular objfile (such as 1162 builtin types), then the data space will be allocated with xmalloc, 1163 the same as for the type structure. */ 1164 1165 #define TYPE_ALLOC(t,size) \ 1166 (TYPE_OBJFILE (t) != NULL \ 1167 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \ 1168 : xmalloc (size)) 1169 1170 extern struct type *alloc_type (struct objfile *); 1171 1172 extern struct type *init_type (enum type_code, int, int, char *, 1173 struct objfile *); 1174 1175 /* Helper functions to construct a struct or record type. An 1176 initially empty type is created using init_composite_type(). 1177 Fields are then added using append_struct_type_field(). A union 1178 type has its size set to the largest field. A struct type has each 1179 field packed against the previous. */ 1180 1181 extern struct type *init_composite_type (char *name, enum type_code code); 1182 extern void append_composite_type_field (struct type *t, char *name, 1183 struct type *field); 1184 1185 extern struct type *lookup_reference_type (struct type *); 1186 1187 extern struct type *make_reference_type (struct type *, struct type **); 1188 1189 extern struct type *make_cv_type (int, int, struct type *, struct type **); 1190 1191 extern void replace_type (struct type *, struct type *); 1192 1193 extern int address_space_name_to_int (char *); 1194 1195 extern const char *address_space_int_to_name (int); 1196 1197 extern struct type *make_type_with_address_space (struct type *type, 1198 int space_identifier); 1199 1200 extern struct type *lookup_member_type (struct type *, struct type *); 1201 1202 extern void 1203 smash_to_method_type (struct type *type, struct type *domain, 1204 struct type *to_type, struct field *args, 1205 int nargs, int varargs); 1206 1207 extern void smash_to_member_type (struct type *, struct type *, struct type *); 1208 1209 extern struct type *allocate_stub_method (struct type *); 1210 1211 extern char *type_name_no_tag (const struct type *); 1212 1213 extern struct type *lookup_struct_elt_type (struct type *, char *, int); 1214 1215 extern struct type *make_pointer_type (struct type *, struct type **); 1216 1217 extern struct type *lookup_pointer_type (struct type *); 1218 1219 extern struct type *make_function_type (struct type *, struct type **); 1220 1221 extern struct type *lookup_function_type (struct type *); 1222 1223 extern struct type *create_range_type (struct type *, struct type *, int, 1224 int); 1225 1226 extern struct type *create_array_type (struct type *, struct type *, 1227 struct type *); 1228 1229 extern struct type *create_string_type (struct type *, struct type *); 1230 1231 extern struct type *create_set_type (struct type *, struct type *); 1232 1233 extern struct type *lookup_unsigned_typename (char *); 1234 1235 extern struct type *lookup_signed_typename (char *); 1236 1237 extern struct type *check_typedef (struct type *); 1238 1239 #define CHECK_TYPEDEF(TYPE) (TYPE) = check_typedef (TYPE) 1240 1241 extern void check_stub_method_group (struct type *, int); 1242 1243 extern char *gdb_mangle_name (struct type *, int, int); 1244 1245 extern struct type *lookup_typename (char *, struct block *, int); 1246 1247 extern struct type *lookup_template_type (char *, struct type *, 1248 struct block *); 1249 1250 extern struct type *lookup_fundamental_type (struct objfile *, int); 1251 1252 extern void fill_in_vptr_fieldno (struct type *); 1253 1254 extern int get_destructor_fn_field (struct type *, int *, int *); 1255 1256 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *); 1257 1258 extern int is_ancestor (struct type *, struct type *); 1259 1260 extern int has_vtable (struct type *); 1261 1262 extern struct type *primary_base_class (struct type *); 1263 1264 extern struct type **virtual_base_list (struct type *); 1265 1266 extern int virtual_base_list_length (struct type *); 1267 extern int virtual_base_list_length_skip_primaries (struct type *); 1268 1269 extern int virtual_base_index (struct type *, struct type *); 1270 extern int virtual_base_index_skip_primaries (struct type *, struct type *); 1271 1272 1273 extern int class_index_in_primary_list (struct type *); 1274 1275 extern int count_virtual_fns (struct type *); 1276 1277 /* Constants for HP/Taligent ANSI C++ runtime model */ 1278 1279 /* Where virtual function entries begin in the 1280 * virtual table, in the non-RRBC vtable format. 1281 * First 4 are the metavtable pointer, top offset, 1282 * typeinfo pointer, and dup base info pointer */ 1283 #define HP_ACC_VFUNC_START 4 1284 1285 /* (Negative) Offset where virtual base offset entries begin 1286 * in the virtual table. Skips over metavtable pointer and 1287 * the self-offset entry. 1288 * NOTE: NEGATE THIS BEFORE USING! The virtual base offsets 1289 * appear before the address point of the vtable (the slot 1290 * pointed to by the object's vtable pointer), i.e. at lower 1291 * addresses than the vtable pointer. */ 1292 #define HP_ACC_VBASE_START 2 1293 1294 /* (Positive) Offset where the pointer to the typeinfo 1295 * object is present in the virtual table */ 1296 #define HP_ACC_TYPEINFO_OFFSET 2 1297 1298 /* (Positive) Offset where the ``top offset'' entry of 1299 * the virtual table is */ 1300 #define HP_ACC_TOP_OFFSET_OFFSET 1 1301 1302 /* Overload resolution */ 1303 1304 #define LENGTH_MATCH(bv) ((bv)->rank[0]) 1305 1306 /* Badness if parameter list length doesn't match arg list length */ 1307 #define LENGTH_MISMATCH_BADNESS 100 1308 /* Dummy badness value for nonexistent parameter positions */ 1309 #define TOO_FEW_PARAMS_BADNESS 100 1310 /* Badness if no conversion among types */ 1311 #define INCOMPATIBLE_TYPE_BADNESS 100 1312 1313 /* Badness of integral promotion */ 1314 #define INTEGER_PROMOTION_BADNESS 1 1315 /* Badness of floating promotion */ 1316 #define FLOAT_PROMOTION_BADNESS 1 1317 /* Badness of integral conversion */ 1318 #define INTEGER_CONVERSION_BADNESS 2 1319 /* Badness of floating conversion */ 1320 #define FLOAT_CONVERSION_BADNESS 2 1321 /* Badness of integer<->floating conversions */ 1322 #define INT_FLOAT_CONVERSION_BADNESS 2 1323 /* Badness of converting to a boolean */ 1324 #define BOOLEAN_CONVERSION_BADNESS 2 1325 /* Badness of pointer conversion */ 1326 #define POINTER_CONVERSION_BADNESS 2 1327 /* Badness of conversion of pointer to void pointer */ 1328 #define VOID_PTR_CONVERSION_BADNESS 2 1329 /* Badness of converting derived to base class */ 1330 #define BASE_CONVERSION_BADNESS 2 1331 /* Badness of converting from non-reference to reference */ 1332 #define REFERENCE_CONVERSION_BADNESS 2 1333 1334 /* Non-standard conversions allowed by the debugger */ 1335 /* Converting a pointer to an int is usually OK */ 1336 #define NS_POINTER_CONVERSION_BADNESS 10 1337 1338 1339 extern int compare_badness (struct badness_vector *, struct badness_vector *); 1340 1341 extern struct badness_vector *rank_function (struct type **, int, 1342 struct type **, int); 1343 1344 extern int rank_one_type (struct type *, struct type *); 1345 1346 extern void recursive_dump_type (struct type *, int); 1347 1348 /* printcmd.c */ 1349 1350 extern void print_scalar_formatted (void *, struct type *, int, int, 1351 struct ui_file *); 1352 1353 extern int can_dereference (struct type *); 1354 1355 extern int is_integral_type (struct type *); 1356 1357 extern void maintenance_print_type (char *, int); 1358 1359 #endif /* GDBTYPES_H */ 1360