gdb/gdbtypes.h

   1 /* Internal type definitions for GDB.
   2    Copyright (C) 1992 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support, using pieces from other GDB modules.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #if !defined (GDBTYPES_H)
  22 #define GDBTYPES_H 1
  23
  24 /* When gdb creates fundamental types, it uses one of the following
  25    type identifiers.  The identifiers are used to index a vector of
  26    pointers to any types that are created. */
  27
  28 #define FT_VOID                 0
  29 #define FT_BOOLEAN              1
  30 #define FT_CHAR                 2
  31 #define FT_SIGNED_CHAR          3
  32 #define FT_UNSIGNED_CHAR        4
  33 #define FT_SHORT                5
  34 #define FT_SIGNED_SHORT         6
  35 #define FT_UNSIGNED_SHORT       7
  36 #define FT_INTEGER              8
  37 #define FT_SIGNED_INTEGER       9
  38 #define FT_UNSIGNED_INTEGER     10
  39 #define FT_LONG                 11
  40 #define FT_SIGNED_LONG          12
  41 #define FT_UNSIGNED_LONG        13
  42 #define FT_LONG_LONG            14
  43 #define FT_SIGNED_LONG_LONG     15
  44 #define FT_UNSIGNED_LONG_LONG   16
  45 #define FT_FLOAT                17
  46 #define FT_DBL_PREC_FLOAT       18
  47 #define FT_EXT_PREC_FLOAT       19
  48 #define FT_COMPLEX              20
  49 #define FT_DBL_PREC_COMPLEX     21
  50 #define FT_EXT_PREC_COMPLEX     22
  51 #define FT_STRING               23
  52 #define FT_FIXED_DECIMAL        24
  53 #define FT_FLOAT_DECIMAL        25
  54 #define FT_BYTE                 26
  55 #define FT_UNSIGNED_BYTE        27
  56
  57 #define FT_NUM_MEMBERS          28      /* Highest FT_* above, plus one. */
  58
  59 /* Some macros for char-based bitfields.  */
  60
  61 #define B_SET(a,x)      ((a)[(x)>>3] |= (1 << ((x)&7)))
  62 #define B_CLR(a,x)      ((a)[(x)>>3] &= ~(1 << ((x)&7)))
  63 #define B_TST(a,x)      ((a)[(x)>>3] & (1 << ((x)&7)))
  64 #define B_TYPE          unsigned char
  65 #define B_BYTES(x)      ( 1 + ((x)>>3) )
  66 #define B_CLRALL(a,x)   memset ((a), 0, B_BYTES(x))
  67
  68 /* Different kinds of data types are distinguished by the `code' field.  */
  69
  70 enum type_code
  71 {
  72   TYPE_CODE_UNDEF,              /* Not used; catches errors */
  73   TYPE_CODE_PTR,                /* Pointer type */
  74   TYPE_CODE_ARRAY,              /* Array type with lower & upper bounds. */
  75   TYPE_CODE_STRUCT,             /* C struct or Pascal record */
  76   TYPE_CODE_UNION,              /* C union or Pascal variant part */
  77   TYPE_CODE_ENUM,               /* Enumeration type */
  78   TYPE_CODE_FUNC,               /* Function type */
  79   TYPE_CODE_INT,                /* Integer type */
  80   TYPE_CODE_FLT,                /* Floating type */
  81   TYPE_CODE_VOID,               /* Void type (values zero length) */
  82   TYPE_CODE_SET,                /* Pascal sets */
  83   TYPE_CODE_RANGE,              /* Range (integers within spec'd bounds) */
  84   TYPE_CODE_STRING,             /* String types, distinct from array of char */
  85   TYPE_CODE_BITSTRING,          /* String of bits, distinct from bool array */
  86   TYPE_CODE_ERROR,              /* Unknown type */
  87
  88   /* C++ */
  89   TYPE_CODE_MEMBER,             /* Member type */
  90   TYPE_CODE_METHOD,             /* Method type */
  91   TYPE_CODE_REF,                /* C++ Reference types */
  92
  93   /* Modula-2 */
  94   TYPE_CODE_CHAR,               /* *real* character type */
  95   TYPE_CODE_BOOL                /* BOOLEAN type */
  96 };
  97
  98 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
  99    alias for TYPE_CODE_STRUCT.  Eventually these should probably be
 100    officially distinct types within gdb. */
 101
 102 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
 103
 104 /* Some bits for the type's flags word. */
 105
 106 /* Explicitly unsigned integer type */
 107
 108 #define TYPE_FLAG_UNSIGNED      (1 << 0)
 109
 110 /* Explicitly signed integer type */
 111
 112 #define TYPE_FLAG_SIGNED        (1 << 1)
 113
 114 /* This appears in a type's flags word if it is a stub type (eg. if
 115    someone referenced a type that wasn't defined in a source file
 116    via (struct sir_not_appearing_in_this_film *)).  */
 117
 118 #define TYPE_FLAG_STUB          (1 << 2)
 119
 120
 121 struct type
 122 {
 123
 124   /* Code for kind of type */
 125
 126   enum type_code code;
 127
 128   /* Name of this type, or NULL if none.
 129      This is used for printing only, except by poorly designed C++ code.
 130      Type names specified as input are defined by symbols.  */
 131
 132   char *name;
 133
 134   /* Length in bytes of storage for a value of this type */
 135
 136   unsigned length;
 137
 138   /* Every type is now associated with a particular objfile, and the
 139      type is allocated on the type_obstack for that objfile.  One problem
 140      however, is that there are times when gdb allocates new types while
 141      it is not in the process of reading symbols from a particular objfile.
 142      Fortunately, these happen when the type being created is a derived
 143      type of an existing type, such as in lookup_pointer_type().  So
 144      we can just allocate the new type using the same objfile as the
 145      existing type, but to do this we need a backpointer to the objfile
 146      from the existing type.  Yes this is somewhat ugly, but without
 147      major overhaul of the internal type system, it can't be avoided
 148      for now. */
 149
 150   struct objfile *objfile;
 151
 152   /* For a pointer type, describes the type of object pointed to.
 153      For an array type, describes the type of the elements.
 154      For a function or method type, describes the type of the return value.
 155      For a range type, describes the type of the full range.
 156      Unused otherwise.  */
 157
 158   struct type *target_type;
 159
 160   /* Type that is a pointer to this type.
 161      NULL if no such pointer-to type is known yet.
 162      The debugger may add the address of such a type
 163      if it has to construct one later.  */
 164
 165   struct type *pointer_type;
 166
 167   /* C++: also need a reference type.  */
 168
 169   struct type *reference_type;
 170
 171   /* Type that is a function returning this type.
 172      NULL if no such function type is known here.
 173      The debugger may add the address of such a type
 174      if it has to construct one later.  */
 175
 176   struct type *function_type;
 177
 178   /* Flags about this type.  */
 179
 180   short flags;
 181
 182   /* Number of fields described for this type */
 183
 184   short nfields;
 185
 186   /* For structure and union types, a description of each field.
 187      For set and pascal array types, there is one "field",
 188      whose type is the domain type of the set or array.
 189      For range types, there are two "fields",
 190      the minimum and maximum values (both inclusive).
 191      For enum types, each possible value is described by one "field".
 192      For C++ classes, there is one field for each base class (if it is
 193      a derived class) plus one field for each class data member.  Member
 194      functions are recorded elsewhere.
 195
 196      Using a pointer to a separate array of fields
 197      allows all types to have the same size, which is useful
 198      because we can allocate the space for a type before
 199      we know what to put in it.  */
 200
 201   struct field
 202     {
 203
 204       /* Position of this field, counting in bits from start of
 205          containing structure.  For a function type, this is the
 206          position in the argument list of this argument.
 207          For a range bound or enum value, this is the value itself.
 208          (FIXME:  What about ranges larger than host int size?)
 209          For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB.
 210          For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB. */
 211
 212       int bitpos;
 213
 214       /* Size of this field, in bits, or zero if not packed.
 215          For an unpacked field, the field's type's length
 216          says how many bytes the field occupies.  */
 217
 218       int bitsize;
 219
 220       /* In a struct or enum type, type of this field.
 221          In a function type, type of this argument.
 222          In an array type, the domain-type of the array.  */
 223
 224       struct type *type;
 225
 226       /* Name of field, value or argument.
 227          NULL for range bounds and array domains.  */
 228
 229       char *name;
 230
 231     } *fields;
 232
 233   /* For types with virtual functions, VPTR_BASETYPE is the base class which
 234      defined the virtual function table pointer.  VPTR_FIELDNO is
 235      the field number of that pointer in the structure.
 236
 237      For types that are pointer to member types, VPTR_BASETYPE
 238      is the type that this pointer is a member of.
 239
 240      Unused otherwise.  */
 241
 242   struct type *vptr_basetype;
 243
 244   int vptr_fieldno;
 245
 246   /* Slot to point to additional language-specific fields of this type.  */
 247
 248   union type_specific
 249     {
 250
 251       /* ARG_TYPES is for TYPE_CODE_METHOD and TYPE_CODE_FUNC.  */
 252
 253       struct type **arg_types;
 254
 255       /* CPLUS_STUFF is for TYPE_CODE_STRUCT.  It is initialized to point to
 256          cplus_struct_default, a default static instance of a struct
 257          cplus_struct_type. */
 258
 259       struct cplus_struct_type *cplus_stuff;
 260
 261     } type_specific;
 262 };
 263
 264 #define NULL_TYPE ((struct type *) 0)
 265
 266 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
 267    nodes.  */
 268
 269 struct cplus_struct_type
 270 {
 271   /* Number of base classes this type derives from. */
 272
 273   short n_baseclasses;
 274
 275   /* Number of methods with unique names.  All overloaded methods with
 276      the same name count only once. */
 277
 278   short nfn_fields;
 279
 280   /* Number of methods described for this type plus all the
 281      methods that it derives from.  */
 282
 283   int nfn_fields_total;
 284
 285   /* For derived classes, the number of base classes is given by n_baseclasses
 286      and virtual_field_bits is a bit vector containing one bit per base class.
 287      If the base class is virtual, the corresponding bit will be set.
 288      I.E, given:
 289
 290         class A{};
 291         class B{};
 292         class C : public B, public virtual A {};
 293
 294      B is a baseclass of C; A is a virtual baseclass for C.
 295      This is a C++ 2.0 language feature. */
 296
 297   B_TYPE *virtual_field_bits;
 298
 299   /* For classes with private fields, the number of fields is given by
 300      nfields and private_field_bits is a bit vector containing one bit
 301      per field.
 302      If the field is private, the corresponding bit will be set. */
 303
 304   B_TYPE *private_field_bits;
 305
 306   /* For classes with protected fields, the number of fields is given by
 307      nfields and protected_field_bits is a bit vector containing one bit
 308      per field.
 309      If the field is private, the corresponding bit will be set. */
 310
 311   B_TYPE *protected_field_bits;
 312
 313   /* For classes, structures, and unions, a description of each field,
 314      which consists of an overloaded name, followed by the types of
 315      arguments that the method expects, and then the name after it
 316      has been renamed to make it distinct.
 317
 318      fn_fieldlists points to an array of nfn_fields of these. */
 319
 320   struct fn_fieldlist
 321     {
 322
 323       /* The overloaded name.  */
 324
 325       char *name;
 326
 327       /* The number of methods with this name.  */
 328
 329       int length;
 330
 331       /* The list of methods.  */
 332
 333       struct fn_field
 334         {
 335
 336           /* The name after it has been processed */
 337
 338           char *physname;
 339
 340           /* The return value of the method */
 341
 342           struct type *type;
 343
 344           /* The argument list */
 345
 346           struct type **args;
 347
 348           /* For virtual functions.
 349              First baseclass that defines this virtual function.   */
 350
 351           struct type *fcontext;
 352
 353           /* Attributes. */
 354
 355           unsigned int is_const : 1;
 356           unsigned int is_volatile : 1;
 357           unsigned int is_private : 1;
 358           unsigned int is_protected : 1;
 359           unsigned int is_stub : 1;
 360           unsigned int dummy : 3;
 361
 362           /* Index into that baseclass's virtual function table,
 363              minus 2; else if static: VOFFSET_STATIC; else: 0.  */
 364
 365           unsigned int voffset : 24;
 366
 367 #         define VOFFSET_STATIC 1
 368
 369         } *fn_fields;
 370
 371     } *fn_fieldlists;
 372
 373 };
 374
 375 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
 376    this shared static structure. */
 377
 378 extern const struct cplus_struct_type cplus_struct_default;
 379
 380 extern void
 381 allocate_cplus_struct_type PARAMS ((struct type *));
 382
 383 #define INIT_CPLUS_SPECIFIC(type) \
 384   (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
 385 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
 386 #define HAVE_CPLUS_STRUCT(type) \
 387   (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
 388
 389 #define TYPE_NAME(thistype) (thistype)->name
 390 #define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
 391 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
 392 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
 393 #define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
 394 #define TYPE_LENGTH(thistype) (thistype)->length
 395 #define TYPE_OBJFILE(thistype) (thistype)->objfile
 396 #define TYPE_FLAGS(thistype) (thistype)->flags
 397 #define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
 398 #define TYPE_CODE(thistype) (thistype)->code
 399 #define TYPE_NFIELDS(thistype) (thistype)->nfields
 400 #define TYPE_FIELDS(thistype) (thistype)->fields
 401
 402 /* C++ */
 403
 404 #define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
 405 #define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
 406 #define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
 407 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
 408 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
 409 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
 410 #define TYPE_TYPE_SPECIFIC(thistype) (thistype)->type_specific
 411 #define TYPE_ARG_TYPES(thistype) (thistype)->type_specific.arg_types
 412 #define TYPE_CPLUS_SPECIFIC(thistype) (thistype)->type_specific.cplus_stuff
 413 #define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
 414 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
 415 #define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
 416 #define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
 417 #define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
 418 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
 419   B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))
 420
 421 #define TYPE_FIELD(thistype, n) (thistype)->fields[n]
 422 #define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
 423 #define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
 424 #define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
 425 #define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
 426 #define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
 427 #define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize
 428
 429 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
 430   TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
 431 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
 432   TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
 433 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
 434   TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
 435 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
 436   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
 437 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
 438   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
 439 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
 440   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
 441 #define TYPE_FIELD_PRIVATE(thistype, n) \
 442   (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
 443     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
 444 #define TYPE_FIELD_PROTECTED(thistype, n) \
 445   (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
 446     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
 447 #define TYPE_FIELD_VIRTUAL(thistype, n) \
 448        B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
 449
 450 #define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
 451 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)
 452
 453 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
 454 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
 455 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
 456 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
 457 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
 458
 459 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
 460 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
 461 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
 462 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_ARG_TYPES ((thisfn)[n].type)
 463 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
 464 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
 465 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
 466 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
 467 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
 468 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
 469 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
 470 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
 471 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
 472
 473 extern struct type *builtin_type_void;
 474 extern struct type *builtin_type_char;
 475 extern struct type *builtin_type_short;
 476 extern struct type *builtin_type_int;
 477 extern struct type *builtin_type_long;
 478 extern struct type *builtin_type_signed_char;
 479 extern struct type *builtin_type_unsigned_char;
 480 extern struct type *builtin_type_unsigned_short;
 481 extern struct type *builtin_type_unsigned_int;
 482 extern struct type *builtin_type_unsigned_long;
 483 extern struct type *builtin_type_float;
 484 extern struct type *builtin_type_double;
 485 extern struct type *builtin_type_long_double;
 486 extern struct type *builtin_type_complex;
 487 extern struct type *builtin_type_double_complex;
 488 extern struct type *builtin_type_string;
 489
 490 /* This type represents a type that was unrecognized in symbol
 491    read-in.  */
 492
 493 extern struct type *builtin_type_error;
 494
 495 extern struct type *builtin_type_long_long;
 496 extern struct type *builtin_type_unsigned_long_long;
 497
 498 /* Modula-2 types */
 499
 500 extern struct type *builtin_type_m2_char;
 501 extern struct type *builtin_type_m2_int;
 502 extern struct type *builtin_type_m2_card;
 503 extern struct type *builtin_type_m2_real;
 504 extern struct type *builtin_type_m2_bool;
 505
 506 /* Chill types */
 507
 508 extern struct type *builtin_type_chill_bool;
 509 extern struct type *builtin_type_chill_char;
 510 extern struct type *builtin_type_chill_long;
 511 extern struct type *builtin_type_chill_ulong;
 512 extern struct type *builtin_type_chill_real;
 513
 514 /* LONG_LONG is defined if the host has "long long".  */
 515
 516 #ifdef LONG_LONG
 517
 518 #define BUILTIN_TYPE_LONGEST builtin_type_long_long
 519 #define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long_long
 520
 521 #else /* not LONG_LONG.  */
 522
 523 #define BUILTIN_TYPE_LONGEST builtin_type_long
 524 #define BUILTIN_TYPE_UNSIGNED_LONGEST builtin_type_unsigned_long
 525
 526 #endif /* not LONG_LONG.  */
 527
 528 /* Maximum and minimum values of built-in types */
 529
 530 #define MAX_OF_TYPE(t)  \
 531    TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
 532     : MAX_OF_SIZE(TYPE_LENGTH(t))
 533
 534 #define MIN_OF_TYPE(t)  \
 535    TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
 536     : MIN_OF_SIZE(TYPE_LENGTH(t))
 537
 538 /* Allocate space for storing data associated with a particular type.
 539    We ensure that the space is allocated using the same mechanism that
 540    was used to allocate the space for the type structure itself.  I.E.
 541    if the type is on an objfile's type_obstack, then the space for data
 542    associated with that type will also be allocated on the type_obstack.
 543    If the type is not associated with any particular objfile (such as
 544    builtin types), then the data space will be allocated with xmalloc,
 545    the same as for the type structure. */
 546
 547 #define TYPE_ALLOC(t,size)  \
 548    (TYPE_OBJFILE (t) != NULL  \
 549     ? obstack_alloc (&TYPE_OBJFILE (t) -> type_obstack, size) \
 550     : xmalloc (size))
 551
 552 extern struct type *
 553 alloc_type PARAMS ((struct objfile *));
 554
 555 extern struct type *
 556 init_type PARAMS ((enum type_code, int, int, char *, struct objfile *));
 557
 558 extern struct type *
 559 lookup_reference_type PARAMS ((struct type *));
 560
 561 extern struct type *
 562 make_reference_type PARAMS ((struct type *, struct type **));
 563
 564 extern struct type *
 565 lookup_member_type PARAMS ((struct type *, struct type *));
 566
 567 extern void
 568 smash_to_method_type PARAMS ((struct type *, struct type *, struct type *,
 569                               struct type **));
 570
 571 extern void
 572 smash_to_member_type PARAMS ((struct type *, struct type *, struct type *));
 573
 574 extern struct type *
 575 allocate_stub_method PARAMS ((struct type *));
 576
 577 extern char *
 578 type_name_no_tag PARAMS ((const struct type *));
 579
 580 extern struct type *
 581 lookup_struct_elt_type PARAMS ((struct type *, char *, int));
 582
 583 extern struct type *
 584 make_pointer_type PARAMS ((struct type *, struct type **));
 585
 586 extern struct type *
 587 lookup_pointer_type PARAMS ((struct type *));
 588
 589 extern struct type *
 590 make_function_type PARAMS ((struct type *, struct type **));
 591
 592 extern struct type *
 593 lookup_function_type PARAMS ((struct type *));
 594
 595 extern struct type *
 596 create_range_type PARAMS ((struct type *, struct type *, int, int));
 597
 598 extern struct type *
 599 create_array_type PARAMS ((struct type *, struct type *, struct type *));
 600
 601 extern struct type *
 602 create_string_type PARAMS ((struct type *, struct type *));
 603
 604 extern struct type *
 605 lookup_unsigned_typename PARAMS ((char *));
 606
 607 extern struct type *
 608 lookup_signed_typename PARAMS ((char *));
 609
 610 extern void
 611 check_stub_type PARAMS ((struct type *));
 612
 613 extern void
 614 check_stub_method PARAMS ((struct type *, int, int));
 615
 616 extern struct type *
 617 lookup_primitive_typename PARAMS ((char *));
 618
 619 extern char *
 620 gdb_mangle_name PARAMS ((struct type *, int, int));
 621
 622 extern struct type *
 623 builtin_type PARAMS ((char **));
 624
 625 extern struct type *
 626 error_type PARAMS ((char **));
 627
 628 extern struct type *
 629 lookup_typename PARAMS ((char *, struct block *, int));
 630
 631 extern struct type *
 632 lookup_template_type PARAMS ((char *, struct type *, struct block *));
 633
 634 extern struct type *
 635 lookup_fundamental_type PARAMS ((struct objfile *, int));
 636
 637 extern void
 638 fill_in_vptr_fieldno PARAMS ((struct type *));
 639
 640 #if MAINTENANCE_CMDS
 641 extern void recursive_dump_type PARAMS ((struct type *, int));
 642 #endif
 643
 644 /* printcmd.c */
 645
 646 extern void
 647 print_scalar_formatted PARAMS ((char *, struct type *, int, int, FILE *));
 648
 649 #if MAINTENANCE_CMDS
 650 extern void maintenance_print_type PARAMS ((char *, int));
 651 #endif
 652
 653 #endif  /* GDBTYPES_H */