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_PASCAL_ARRAY,       /* Array with explicit type of index */
  85   TYPE_CODE_ERROR,              /* Unknown type */
  86
  87   /* C++ */
  88   TYPE_CODE_MEMBER,             /* Member type */
  89   TYPE_CODE_METHOD,             /* Method type */
  90   TYPE_CODE_REF,                /* C++ Reference types */
  91
  92   /* Modula-2 */
  93   TYPE_CODE_CHAR,               /* *real* character type */
  94   TYPE_CODE_BOOL                /* BOOLEAN type */
  95 };
  96
  97 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
  98    alias for TYPE_CODE_STRUCT.  Eventually these should probably be
  99    officially distinct types within gdb. */
 100
 101 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
 102
 103 /* Some bits for the type's flags word. */
 104
 105 /* Explicitly unsigned integer type */
 106
 107 #define TYPE_FLAG_UNSIGNED      (1 << 0)
 108
 109 /* Explicitly signed integer type */
 110
 111 #define TYPE_FLAG_SIGNED        (1 << 1)
 112
 113 /* This appears in a type's flags word if it is a stub type (eg. if
 114    someone referenced a type that wasn't defined in a source file
 115    via (struct sir_not_appearing_in_this_film *)).  */
 116
 117 #define TYPE_FLAG_STUB          (1 << 2)
 118
 119
 120 struct type
 121 {
 122
 123   /* Code for kind of type */
 124
 125   enum type_code code;
 126
 127   /* Name of this type, or NULL if none.
 128      This is used for printing only, except by poorly designed C++ code.
 129      Type names specified as input are defined by symbols.  */
 130
 131   char *name;
 132
 133   /* Length in bytes of storage for a value of this type */
 134
 135   unsigned length;
 136
 137   /* Every type is now associated with a particular objfile, and the
 138      type is allocated on the type_obstack for that objfile.  One problem
 139      however, is that there are times when gdb allocates new types while
 140      it is not in the process of reading symbols from a particular objfile.
 141      Fortunately, these happen when the type being created is a derived
 142      type of an existing type, such as in lookup_pointer_type().  So
 143      we can just allocate the new type using the same objfile as the
 144      existing type, but to do this we need a backpointer to the objfile
 145      from the existing type.  Yes this is somewhat ugly, but without
 146      major overhaul of the internal type system, it can't be avoided
 147      for now. */
 148
 149   struct objfile *objfile;
 150
 151   /* For a pointer type, describes the type of object pointed to.
 152      For an array type, describes the type of the elements.
 153      For a function or method type, describes the type of the return value.
 154      For a range type, describes the type of the full range.
 155      Unused otherwise.  */
 156
 157   struct type *target_type;
 158
 159   /* Type that is a pointer to this type.
 160      NULL if no such pointer-to type is known yet.
 161      The debugger may add the address of such a type
 162      if it has to construct one later.  */
 163
 164   struct type *pointer_type;
 165
 166   /* C++: also need a reference type.  */
 167
 168   struct type *reference_type;
 169
 170   /* Type that is a function returning this type.
 171      NULL if no such function type is known here.
 172      The debugger may add the address of such a type
 173      if it has to construct one later.  */
 174
 175   struct type *function_type;
 176
 177   /* Flags about this type.  */
 178
 179   short flags;
 180
 181   /* Number of fields described for this type */
 182
 183   short nfields;
 184
 185   /* For structure and union types, a description of each field.
 186      For set and pascal array types, there is one "field",
 187      whose type is the domain type of the set or array.
 188      For range types, there are two "fields",
 189      the minimum and maximum values (both inclusive).
 190      For enum types, each possible value is described by one "field".
 191      For C++ classes, there is one field for each base class (if it is
 192      a derived class) plus one field for each class data member.  Member
 193      functions are recorded elsewhere.
 194
 195      Using a pointer to a separate array of fields
 196      allows all types to have the same size, which is useful
 197      because we can allocate the space for a type before
 198      we know what to put in it.  */
 199
 200   struct field
 201     {
 202
 203       /* Position of this field, counting in bits from start of
 204          containing structure.  For a function type, this is the
 205          position in the argument list of this argument.
 206          For a range bound or enum value, this is the value itself.
 207          (FIXME:  What about ranges larger than host int size?)
 208          For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB.
 209          For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB. */
 210
 211       int bitpos;
 212
 213       /* Size of this field, in bits, or zero if not packed.
 214          For an unpacked field, the field's type's length
 215          says how many bytes the field occupies.  */
 216
 217       int bitsize;
 218
 219       /* In a struct or enum type, type of this field.
 220          In a function type, type of this argument.
 221          In an array type, the domain-type of the array.  */
 222
 223       struct type *type;
 224
 225       /* Name of field, value or argument.
 226          NULL for range bounds and array domains.  */
 227
 228       char *name;
 229
 230     } *fields;
 231
 232   /* For types with virtual functions, VPTR_BASETYPE is the base class which
 233      defined the virtual function table pointer.  VPTR_FIELDNO is
 234      the field number of that pointer in the structure.
 235
 236      For types that are pointer to member types, VPTR_BASETYPE
 237      is the type that this pointer is a member of.
 238
 239      Unused otherwise.  */
 240
 241   struct type *vptr_basetype;
 242
 243   int vptr_fieldno;
 244
 245   /* Slot to point to additional language-specific fields of this type.  */
 246
 247   union type_specific
 248     {
 249
 250       /* ARG_TYPES is for TYPE_CODE_METHOD and TYPE_CODE_FUNC.  */
 251
 252       struct type **arg_types;
 253
 254       /* CPLUS_STUFF is for TYPE_CODE_STRUCT.  It is initialized to point to
 255          cplus_struct_default, a default static instance of a struct
 256          cplus_struct_type. */
 257
 258       struct cplus_struct_type *cplus_stuff;
 259
 260     } type_specific;
 261 };
 262
 263 #define NULL_TYPE ((struct type *) 0)
 264
 265 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
 266    nodes.  */
 267
 268 struct cplus_struct_type
 269 {
 270   /* Number of base classes this type derives from. */
 271
 272   short n_baseclasses;
 273
 274   /* Number of methods with unique names.  All overloaded methods with
 275      the same name count only once. */
 276
 277   short nfn_fields;
 278
 279   /* Number of methods described for this type plus all the
 280      methods that it derives from.  */
 281
 282   int nfn_fields_total;
 283
 284   /* For derived classes, the number of base classes is given by n_baseclasses
 285      and virtual_field_bits is a bit vector containing one bit per base class.
 286      If the base class is virtual, the corresponding bit will be set.
 287      I.E, given:
 288
 289         class A{};
 290         class B{};
 291         class C : public B, public virtual A {};
 292
 293      B is a baseclass of C; A is a virtual baseclass for C.
 294      This is a C++ 2.0 language feature. */
 295
 296   B_TYPE *virtual_field_bits;
 297
 298   /* For classes with private fields, the number of fields is given by
 299      nfields and private_field_bits is a bit vector containing one bit
 300      per field.
 301      If the field is private, the corresponding bit will be set. */
 302
 303   B_TYPE *private_field_bits;
 304
 305   /* For classes with protected fields, the number of fields is given by
 306      nfields and protected_field_bits is a bit vector containing one bit
 307      per field.
 308      If the field is private, the corresponding bit will be set. */
 309
 310   B_TYPE *protected_field_bits;
 311
 312   /* For classes, structures, and unions, a description of each field,
 313      which consists of an overloaded name, followed by the types of
 314      arguments that the method expects, and then the name after it
 315      has been renamed to make it distinct.
 316
 317      fn_fieldlists points to an array of nfn_fields of these. */
 318
 319   struct fn_fieldlist
 320     {
 321
 322       /* The overloaded name.  */
 323
 324       char *name;
 325
 326       /* The number of methods with this name.  */
 327
 328       int length;
 329
 330       /* The list of methods.  */
 331
 332       struct fn_field
 333         {
 334
 335           /* The name after it has been processed */
 336
 337           char *physname;
 338
 339           /* The return value of the method */
 340
 341           struct type *type;
 342
 343           /* The argument list */
 344
 345           struct type **args;
 346
 347           /* For virtual functions.
 348              First baseclass that defines this virtual function.   */
 349
 350           struct type *fcontext;
 351
 352           /* Attributes. */
 353
 354           unsigned int is_const : 1;
 355           unsigned int is_volatile : 1;
 356           unsigned int is_private : 1;
 357           unsigned int is_protected : 1;
 358           unsigned int is_stub : 1;
 359           unsigned int dummy : 3;
 360
 361           /* Index into that baseclass's virtual function table,
 362              minus 2; else if static: VOFFSET_STATIC; else: 0.  */
 363
 364           unsigned int voffset : 24;
 365
 366 #         define VOFFSET_STATIC 1
 367
 368         } *fn_fields;
 369
 370     } *fn_fieldlists;
 371
 372 };
 373
 374 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
 375    this shared static structure. */
 376
 377 extern struct cplus_struct_type cplus_struct_default;
 378
 379 extern void
 380 allocate_cplus_struct_type PARAMS ((struct type *));
 381
 382 #define INIT_CPLUS_SPECIFIC(type) \
 383   (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
 384 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
 385 #define HAVE_CPLUS_STRUCT(type) \
 386   (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
 387
 388 #define TYPE_NAME(thistype) (thistype)->name
 389 #define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
 390 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
 391 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
 392 #define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
 393 #define TYPE_LENGTH(thistype) (thistype)->length
 394 #define TYPE_OBJFILE(thistype) (thistype)->objfile
 395 #define TYPE_FLAGS(thistype) (thistype)->flags
 396 #define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
 397 #define TYPE_CODE(thistype) (thistype)->code
 398 #define TYPE_NFIELDS(thistype) (thistype)->nfields
 399 #define TYPE_FIELDS(thistype) (thistype)->fields
 400
 401 /* C++ */
 402
 403 #define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
 404 #define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
 405 #define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
 406 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
 407 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
 408 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
 409 #define TYPE_TYPE_SPECIFIC(thistype) (thistype)->type_specific
 410 #define TYPE_ARG_TYPES(thistype) (thistype)->type_specific.arg_types
 411 #define TYPE_CPLUS_SPECIFIC(thistype) (thistype)->type_specific.cplus_stuff
 412 #define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
 413 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
 414 #define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
 415 #define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
 416 #define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
 417 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
 418   B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))
 419
 420 #define TYPE_FIELD(thistype, n) (thistype)->fields[n]
 421 #define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
 422 #define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
 423 #define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
 424 #define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
 425 #define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
 426 #define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize
 427
 428 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
 429   TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
 430 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
 431   TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
 432 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
 433   TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
 434 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
 435   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
 436 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
 437   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
 438 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
 439   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
 440 #define TYPE_FIELD_PRIVATE(thistype, n) \
 441   (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
 442     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
 443 #define TYPE_FIELD_PROTECTED(thistype, n) \
 444   (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
 445     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
 446 #define TYPE_FIELD_VIRTUAL(thistype, n) \
 447        B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
 448
 449 #define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
 450 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)
 451
 452 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
 453 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
 454 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
 455 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
 456 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
 457
 458 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
 459 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
 460 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
 461 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_ARG_TYPES ((thisfn)[n].type)
 462 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
 463 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
 464 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
 465 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
 466 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
 467 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
 468 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
 469 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
 470 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
 471
 472 extern struct type *builtin_type_void;
 473 extern struct type *builtin_type_char;
 474 extern struct type *builtin_type_short;
 475 extern struct type *builtin_type_int;
 476 extern struct type *builtin_type_long;
 477 extern struct type *builtin_type_signed_char;
 478 extern struct type *builtin_type_unsigned_char;
 479 extern struct type *builtin_type_unsigned_short;
 480 extern struct type *builtin_type_unsigned_int;
 481 extern struct type *builtin_type_unsigned_long;
 482 extern struct type *builtin_type_float;
 483 extern struct type *builtin_type_double;
 484 extern struct type *builtin_type_long_double;
 485 extern struct type *builtin_type_complex;
 486 extern struct type *builtin_type_double_complex;
 487
 488 /* This type represents a type that was unrecognized in symbol
 489    read-in.  */
 490
 491 extern struct type *builtin_type_error;
 492
 493 extern struct type *builtin_type_long_long;
 494 extern struct type *builtin_type_unsigned_long_long;
 495
 496 /* Modula-2 types */
 497
 498 extern struct type *builtin_type_m2_char;
 499 extern struct type *builtin_type_m2_int;
 500 extern struct type *builtin_type_m2_card;
 501 extern struct type *builtin_type_m2_real;
 502 extern struct type *builtin_type_m2_bool;
 503
 504 /* start-sanitize-chill */
 505 /* Chill types */
 506
 507 extern struct type *builtin_type_chill_bool;
 508 extern struct type *builtin_type_chill_char;
 509 extern struct type *builtin_type_chill_long;
 510 extern struct type *builtin_type_chill_ulong;
 511 extern struct type *builtin_type_chill_real;
 512 /* end-sanitize-chill */
 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 lookup_unsigned_typename PARAMS ((char *));
 603
 604 extern struct type *
 605 lookup_signed_typename PARAMS ((char *));
 606
 607 extern void
 608 check_stub_type PARAMS ((struct type *));
 609
 610 extern void
 611 check_stub_method PARAMS ((struct type *, int, int));
 612
 613 extern struct type *
 614 lookup_primitive_typename PARAMS ((char *));
 615
 616 extern char *
 617 gdb_mangle_name PARAMS ((struct type *, int, int));
 618
 619 extern struct type *
 620 builtin_type PARAMS ((char **));
 621
 622 extern struct type *
 623 error_type PARAMS ((char **));
 624
 625 extern struct type *
 626 lookup_typename PARAMS ((char *, struct block *, int));
 627
 628 extern struct type *
 629 lookup_template_type PARAMS ((char *, struct type *, struct block *));
 630
 631 extern struct type *
 632 lookup_fundamental_type PARAMS ((struct objfile *, int));
 633
 634 extern void
 635 fill_in_vptr_fieldno PARAMS ((struct type *));
 636
 637 #if MAINTENANCE_CMDS
 638 extern void recursive_dump_type PARAMS ((struct type *, int));
 639 #endif
 640
 641 /* printcmd.c */
 642
 643 extern void
 644 print_scalar_formatted PARAMS ((char *, struct type *, int, int, FILE *));
 645
 646 #if MAINTENANCE_CMDS
 647 extern void maintenance_print_type PARAMS ((char *, int));
 648 #endif
 649
 650 #endif  /* GDBTYPES_H */