gdb/gdbtypes.h

   1 /* Internal type definitions for GDB.
   2    Copyright (C) 1992, 1993, 1994 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 /* Codes for `fundamental types'.  This is a monstrosity based on the
  25    bogus notion that there are certain compiler-independent
  26    `fundamental types'.  None of these is well-defined (how big is
  27    FT_SHORT?  Does it depend on the language?  How does the
  28    language-specific code know which type to correlate to FT_SHORT?)  */
  29
  30 #define FT_VOID                 0
  31 #define FT_BOOLEAN              1
  32 #define FT_CHAR                 2
  33 #define FT_SIGNED_CHAR          3
  34 #define FT_UNSIGNED_CHAR        4
  35 #define FT_SHORT                5
  36 #define FT_SIGNED_SHORT         6
  37 #define FT_UNSIGNED_SHORT       7
  38 #define FT_INTEGER              8
  39 #define FT_SIGNED_INTEGER       9
  40 #define FT_UNSIGNED_INTEGER     10
  41 #define FT_LONG                 11
  42 #define FT_SIGNED_LONG          12
  43 #define FT_UNSIGNED_LONG        13
  44 #define FT_LONG_LONG            14
  45 #define FT_SIGNED_LONG_LONG     15
  46 #define FT_UNSIGNED_LONG_LONG   16
  47 #define FT_FLOAT                17
  48 #define FT_DBL_PREC_FLOAT       18
  49 #define FT_EXT_PREC_FLOAT       19
  50 #define FT_COMPLEX              20
  51 #define FT_DBL_PREC_COMPLEX     21
  52 #define FT_EXT_PREC_COMPLEX     22
  53 #define FT_STRING               23
  54 #define FT_FIXED_DECIMAL        24
  55 #define FT_FLOAT_DECIMAL        25
  56 #define FT_BYTE                 26
  57 #define FT_UNSIGNED_BYTE        27
  58
  59 #define FT_NUM_MEMBERS          28      /* Highest FT_* above, plus one. */
  60
  61 /* Some macros for char-based bitfields.  */
  62
  63 #define B_SET(a,x)      ((a)[(x)>>3] |= (1 << ((x)&7)))
  64 #define B_CLR(a,x)      ((a)[(x)>>3] &= ~(1 << ((x)&7)))
  65 #define B_TST(a,x)      ((a)[(x)>>3] & (1 << ((x)&7)))
  66 #define B_TYPE          unsigned char
  67 #define B_BYTES(x)      ( 1 + ((x)>>3) )
  68 #define B_CLRALL(a,x)   memset ((a), 0, B_BYTES(x))
  69
  70 /* Different kinds of data types are distinguished by the `code' field.  */
  71
  72 enum type_code
  73 {
  74   TYPE_CODE_UNDEF,              /* Not used; catches errors */
  75   TYPE_CODE_PTR,                /* Pointer type */
  76   TYPE_CODE_ARRAY,              /* Array type with lower & upper bounds. */
  77   TYPE_CODE_STRUCT,             /* C struct or Pascal record */
  78   TYPE_CODE_UNION,              /* C union or Pascal variant part */
  79   TYPE_CODE_ENUM,               /* Enumeration type */
  80   TYPE_CODE_FUNC,               /* Function type */
  81   TYPE_CODE_INT,                /* Integer type */
  82
  83   /* Floating type.  This is *NOT* a complex type.  Beware, there are parts
  84      of GDB which bogusly assume that TYPE_CODE_FLT can mean complex.  */
  85   TYPE_CODE_FLT,
  86
  87   /* Void type.  The length field specifies the length (probably always
  88      one) which is used in pointer arithmetic involving pointers to
  89      this type, but actually dereferencing such a pointer is invalid;
  90      a void type has no length and no actual representation in memory
  91      or registers.  A pointer to a void type is a generic pointer.  */
  92   TYPE_CODE_VOID,
  93
  94   TYPE_CODE_SET,                /* Pascal sets */
  95   TYPE_CODE_RANGE,              /* Range (integers within spec'd bounds) */
  96
  97   /* A string type which is like an array of character but prints
  98      differently (at least for CHILL).  It does not contain a length
  99      field as Pascal strings (for many Pascals, anyway) do; if we want
 100      to deal with such strings, we should use a new type code.  */
 101   TYPE_CODE_STRING,
 102
 103   /* String of bits; like TYPE_CODE_SET but prints differently (at least
 104      for CHILL).  */
 105   TYPE_CODE_BITSTRING,
 106
 107   /* Unknown type.  The length field is valid if we were able to
 108      deduce that much about the type, or 0 if we don't even know that.  */
 109   TYPE_CODE_ERROR,
 110
 111   /* C++ */
 112   TYPE_CODE_MEMBER,             /* Member type */
 113   TYPE_CODE_METHOD,             /* Method type */
 114   TYPE_CODE_REF,                /* C++ Reference types */
 115
 116   TYPE_CODE_CHAR,               /* *real* character type */
 117
 118   /* Boolean type.  0 is false, 1 is true, and other values are non-boolean
 119      (e.g. FORTRAN "logical" used as unsigned int).  */
 120   TYPE_CODE_BOOL,
 121
 122   /* Fortran */
 123   TYPE_CODE_COMPLEX,            /* Complex float */
 124   TYPE_CODE_LITERAL_COMPLEX,    /* */
 125   TYPE_CODE_LITERAL_STRING      /* */
 126 };
 127
 128 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
 129    alias for TYPE_CODE_STRUCT.  This is for DWARF, which has a distinct
 130    "class" attribute.  Perhaps we should actually have a separate TYPE_CODE
 131    so that we can print "class" or "struct" depending on what the debug
 132    info said.  It's not clear we should bother.  */
 133
 134 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
 135
 136 /* Some bits for the type's flags word. */
 137
 138 /* Unsigned integer type.  If this is not set for a TYPE_CODE_INT, the
 139    type is signed.  */
 140
 141 #define TYPE_FLAG_UNSIGNED      (1 << 0)
 142
 143 /* This appears in a type's flags word if it is a stub type (e.g., if
 144    someone referenced a type that wasn't defined in a source file
 145    via (struct sir_not_appearing_in_this_film *)).  */
 146
 147 #define TYPE_FLAG_STUB          (1 << 2)
 148
 149 /* The target type of this type is a stub type, and this type needs to
 150    be updated if it gets un-stubbed in check_stub_type.  Currently only
 151    used for arrays, in which TYPE_LENGTH of the array gets set based
 152    on the TYPE_LENGTH of the target type.  */
 153
 154 #define TYPE_FLAG_TARGET_STUB (1 << 3)
 155
 156 struct type
 157 {
 158
 159   /* Code for kind of type */
 160
 161   enum type_code code;
 162
 163   /* Name of this type, or NULL if none.
 164
 165      This is used for printing only, except by poorly designed C++ code.
 166      For looking up a name, look for a symbol in the VAR_NAMESPACE.  */
 167
 168   char *name;
 169
 170   /* Tag name for this type, or NULL if none.  This means that the
 171      name of the type consists of a keyword followed by the tag name.
 172      Which keyword is determined by the type code ("struct" for
 173      TYPE_CODE_STRUCT, etc.).  As far as I know C/C++ are the only languages
 174      with this feature.
 175
 176      This is used for printing only, except by poorly designed C++ code.
 177      For looking up a name, look for a symbol in the STRUCT_NAMESPACE.
 178      One more legitimate use is that if TYPE_FLAG_STUB is set, this is
 179      the name to use to look for definitions in other files.  */
 180
 181   char *tag_name;
 182
 183   /* Length, in units of TARGET_CHAR_BIT bits,
 184      of storage for a value of this type */
 185
 186   unsigned length;
 187
 188   /* FIXME, these should probably be restricted to a Fortran-specific
 189      field in some fashion.  */
 190 #define BOUND_CANNOT_BE_DETERMINED   5
 191 #define BOUND_BY_REF_ON_STACK        4
 192 #define BOUND_BY_VALUE_ON_STACK      3
 193 #define BOUND_BY_REF_IN_REG          2
 194 #define BOUND_BY_VALUE_IN_REG        1
 195 #define BOUND_SIMPLE                 0
 196   int upper_bound_type;
 197   int lower_bound_type;
 198
 199   /* Every type is now associated with a particular objfile, and the
 200      type is allocated on the type_obstack for that objfile.  One problem
 201      however, is that there are times when gdb allocates new types while
 202      it is not in the process of reading symbols from a particular objfile.
 203      Fortunately, these happen when the type being created is a derived
 204      type of an existing type, such as in lookup_pointer_type().  So
 205      we can just allocate the new type using the same objfile as the
 206      existing type, but to do this we need a backpointer to the objfile
 207      from the existing type.  Yes this is somewhat ugly, but without
 208      major overhaul of the internal type system, it can't be avoided
 209      for now. */
 210
 211   struct objfile *objfile;
 212
 213   /* For a pointer type, describes the type of object pointed to.
 214      For an array type, describes the type of the elements.
 215      For a function or method type, describes the type of the return value.
 216      For a range type, describes the type of the full range.
 217      Unused otherwise.  */
 218
 219   struct type *target_type;
 220
 221   /* Type that is a pointer to this type.
 222      NULL if no such pointer-to type is known yet.
 223      The debugger may add the address of such a type
 224      if it has to construct one later.  */
 225
 226   struct type *pointer_type;
 227
 228   /* C++: also need a reference type.  */
 229
 230   struct type *reference_type;
 231
 232   /* Type that is a function returning this type.
 233      NULL if no such function type is known here.
 234      The debugger may add the address of such a type
 235      if it has to construct one later.  */
 236
 237   struct type *function_type;
 238
 239   /* Flags about this type.  */
 240
 241   short flags;
 242
 243   /* Number of fields described for this type */
 244
 245   short nfields;
 246
 247   /* For structure and union types, a description of each field.
 248      For set and pascal array types, there is one "field",
 249      whose type is the domain type of the set or array.
 250      For range types, there are two "fields",
 251      the minimum and maximum values (both inclusive).
 252      For enum types, each possible value is described by one "field".
 253      For C++ classes, there is one field for each base class (if it is
 254      a derived class) plus one field for each class data member.  Member
 255      functions are recorded elsewhere.
 256
 257      Using a pointer to a separate array of fields
 258      allows all types to have the same size, which is useful
 259      because we can allocate the space for a type before
 260      we know what to put in it.  */
 261
 262   struct field
 263     {
 264
 265       /* Position of this field, counting in bits from start of
 266          containing structure.  For a function type, this is the
 267          position in the argument list of this argument.
 268          For a range bound or enum value, this is the value itself.
 269          (FIXME:  What about ranges larger than host int size?)
 270          For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB.
 271          For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB. */
 272
 273       int bitpos;
 274
 275       /* Size of this field, in bits, or zero if not packed.
 276          For an unpacked field, the field's type's length
 277          says how many bytes the field occupies.  */
 278       /* FIXME: This is abused by TYPE_FIELD_STATIC_PHYSNAME to contain
 279          a pointer, so it has to be long.  */
 280
 281       long bitsize;
 282
 283       /* In a struct or enum type, type of this field.
 284          In a function type, type of this argument.
 285          In an array type, the domain-type of the array.  */
 286
 287       struct type *type;
 288
 289       /* Name of field, value or argument.
 290          NULL for range bounds and array domains.  */
 291
 292       char *name;
 293
 294     } *fields;
 295
 296   /* For types with virtual functions, VPTR_BASETYPE is the base class which
 297      defined the virtual function table pointer.
 298
 299      For types that are pointer to member types, VPTR_BASETYPE
 300      is the type that this pointer is a member of.
 301
 302      Unused otherwise.  */
 303
 304   struct type *vptr_basetype;
 305
 306   /* Field number of the virtual function table pointer in
 307      VPTR_BASETYPE.  If -1, we were unable to find the virtual
 308      function table pointer in initial symbol reading, and
 309      fill_in_vptr_fieldno should be called to find it if possible.
 310
 311      Unused if this type does not have virtual functions.  */
 312
 313   int vptr_fieldno;
 314
 315   /* Slot to point to additional language-specific fields of this type.  */
 316
 317   union type_specific
 318     {
 319
 320       /* ARG_TYPES is for TYPE_CODE_METHOD and TYPE_CODE_FUNC.  */
 321
 322       struct type **arg_types;
 323
 324       /* CPLUS_STUFF is for TYPE_CODE_STRUCT.  It is initialized to point to
 325          cplus_struct_default, a default static instance of a struct
 326          cplus_struct_type. */
 327
 328       struct cplus_struct_type *cplus_stuff;
 329
 330     } type_specific;
 331 };
 332
 333 #define NULL_TYPE ((struct type *) 0)
 334
 335 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
 336    nodes.  */
 337
 338 struct cplus_struct_type
 339 {
 340   /* Number of base classes this type derives from.  The baseclasses are
 341      stored in the first N_BASECLASSES fields (i.e. the `fields' field of
 342      the struct type).  I think only the `type' field of such a field has
 343      any meaning.  */
 344
 345   short n_baseclasses;
 346
 347   /* Number of methods with unique names.  All overloaded methods with
 348      the same name count only once. */
 349
 350   short nfn_fields;
 351
 352   /* Number of methods described for this type, not including the
 353      methods that it derives from.  */
 354
 355   int nfn_fields_total;
 356
 357   /* For derived classes, the number of base classes is given by n_baseclasses
 358      and virtual_field_bits is a bit vector containing one bit per base class.
 359      If the base class is virtual, the corresponding bit will be set.
 360      I.E, given:
 361
 362         class A{};
 363         class B{};
 364         class C : public B, public virtual A {};
 365
 366      B is a baseclass of C; A is a virtual baseclass for C.
 367      This is a C++ 2.0 language feature. */
 368
 369   B_TYPE *virtual_field_bits;
 370
 371   /* For classes with private fields, the number of fields is given by
 372      nfields and private_field_bits is a bit vector containing one bit
 373      per field.
 374      If the field is private, the corresponding bit will be set. */
 375
 376   B_TYPE *private_field_bits;
 377
 378   /* For classes with protected fields, the number of fields is given by
 379      nfields and protected_field_bits is a bit vector containing one bit
 380      per field.
 381      If the field is private, the corresponding bit will be set. */
 382
 383   B_TYPE *protected_field_bits;
 384
 385   /* for classes with fields to be ignored, either this is optimized out
 386      or this field has length 0 */
 387
 388   B_TYPE *ignore_field_bits;
 389
 390   /* For classes, structures, and unions, a description of each field,
 391      which consists of an overloaded name, followed by the types of
 392      arguments that the method expects, and then the name after it
 393      has been renamed to make it distinct.
 394
 395      fn_fieldlists points to an array of nfn_fields of these. */
 396
 397   struct fn_fieldlist
 398     {
 399
 400       /* The overloaded name.  */
 401
 402       char *name;
 403
 404       /* The number of methods with this name.  */
 405
 406       int length;
 407
 408       /* The list of methods.  */
 409
 410       struct fn_field
 411         {
 412
 413           /* If is_stub is clear, this is the mangled name which we can
 414              look up to find the address of the method (FIXME: it would
 415              be cleaner to have a pointer to the struct symbol here
 416              instead).  */
 417
 418           /* If is_stub is set, this is the portion of the mangled
 419              name which specifies the arguments.  For example, "ii",
 420              if there are two int arguments, or "" if there are no
 421              arguments.  See gdb_mangle_name for the conversion from this
 422              format to the one used if is_stub is clear.  */
 423
 424           char *physname;
 425
 426           /* The return value of the method */
 427
 428           struct type *type;
 429
 430           /* The argument list.  Only valid if is_stub is clear.  Contains
 431              the type of each argument, including `this', and ending with
 432              a NULL pointer after the last argument.  Should not contain
 433              a `this' pointer for static member functions.  */
 434
 435           struct type **args;
 436
 437           /* For virtual functions.
 438              First baseclass that defines this virtual function.   */
 439
 440           struct type *fcontext;
 441
 442           /* Attributes. */
 443
 444           unsigned int is_const : 1;
 445           unsigned int is_volatile : 1;
 446           unsigned int is_private : 1;
 447           unsigned int is_protected : 1;
 448
 449           /* A stub method only has some fields valid (but they are enough
 450              to reconstruct the rest of the fields).  */
 451           unsigned int is_stub : 1;
 452
 453           /* Unused.  */
 454           unsigned int dummy : 3;
 455
 456           /* Index into that baseclass's virtual function table,
 457              minus 2; else if static: VOFFSET_STATIC; else: 0.  */
 458
 459           unsigned int voffset : 24;
 460
 461 #         define VOFFSET_STATIC 1
 462
 463         } *fn_fields;
 464
 465     } *fn_fieldlists;
 466
 467 };
 468
 469 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
 470    this shared static structure. */
 471
 472 extern const struct cplus_struct_type cplus_struct_default;
 473
 474 extern void
 475 allocate_cplus_struct_type PARAMS ((struct type *));
 476
 477 #define INIT_CPLUS_SPECIFIC(type) \
 478   (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
 479 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
 480 #define HAVE_CPLUS_STRUCT(type) \
 481   (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
 482
 483 #define TYPE_NAME(thistype) (thistype)->name
 484 #define TYPE_TAG_NAME(type) ((type)->tag_name)
 485 #define TYPE_TARGET_TYPE(thistype) (thistype)->target_type
 486 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
 487 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
 488 #define TYPE_FUNCTION_TYPE(thistype) (thistype)->function_type
 489 #define TYPE_LENGTH(thistype) (thistype)->length
 490 #define TYPE_OBJFILE(thistype) (thistype)->objfile
 491 #define TYPE_FLAGS(thistype) (thistype)->flags
 492 #define TYPE_UNSIGNED(thistype) ((thistype)->flags & TYPE_FLAG_UNSIGNED)
 493 #define TYPE_CODE(thistype) (thistype)->code
 494 #define TYPE_NFIELDS(thistype) (thistype)->nfields
 495 #define TYPE_FIELDS(thistype) (thistype)->fields
 496
 497 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
 498 #define TYPE_LOW_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 0)
 499 #define TYPE_HIGH_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 1)
 500 /* If TYPE_DUMMY_RANGE is true for a range type, it was allocated
 501    by force_to_range_type. */
 502 #define TYPE_DUMMY_RANGE(type) ((type)->vptr_fieldno)
 503
 504 /* Moto-specific stuff for FORTRAN arrays */
 505
 506 #define TYPE_ARRAY_UPPER_BOUND_TYPE(thistype) (thistype)->upper_bound_type
 507 #define TYPE_ARRAY_LOWER_BOUND_TYPE(thistype) (thistype)->lower_bound_type
 508
 509 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
 510    (TYPE_FIELD_BITPOS((TYPE_FIELD_TYPE((arraytype),0)),1))
 511
 512 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
 513    (TYPE_FIELD_BITPOS((TYPE_FIELD_TYPE((arraytype),0)),0))
 514
 515 /* C++ */
 516
 517 #define TYPE_VPTR_BASETYPE(thistype) (thistype)->vptr_basetype
 518 #define TYPE_DOMAIN_TYPE(thistype) (thistype)->vptr_basetype
 519 #define TYPE_VPTR_FIELDNO(thistype) (thistype)->vptr_fieldno
 520 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
 521 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
 522 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
 523 #define TYPE_TYPE_SPECIFIC(thistype) (thistype)->type_specific
 524 #define TYPE_ARG_TYPES(thistype) (thistype)->type_specific.arg_types
 525 #define TYPE_CPLUS_SPECIFIC(thistype) (thistype)->type_specific.cplus_stuff
 526 #define TYPE_BASECLASS(thistype,index) (thistype)->fields[index].type
 527 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
 528 #define TYPE_BASECLASS_NAME(thistype,index) (thistype)->fields[index].name
 529 #define TYPE_BASECLASS_BITPOS(thistype,index) (thistype)->fields[index].bitpos
 530 #define BASETYPE_VIA_PUBLIC(thistype, index) (!TYPE_FIELD_PRIVATE(thistype, index))
 531 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
 532   B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index))
 533
 534 #define TYPE_FIELD(thistype, n) (thistype)->fields[n]
 535 #define TYPE_FIELD_TYPE(thistype, n) (thistype)->fields[n].type
 536 #define TYPE_FIELD_NAME(thistype, n) (thistype)->fields[n].name
 537 #define TYPE_FIELD_VALUE(thistype, n) (* (int*) &(thistype)->fields[n].type)
 538 #define TYPE_FIELD_BITPOS(thistype, n) (thistype)->fields[n].bitpos
 539 #define TYPE_FIELD_BITSIZE(thistype, n) (thistype)->fields[n].bitsize
 540 #define TYPE_FIELD_PACKED(thistype, n) (thistype)->fields[n].bitsize
 541
 542 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
 543   TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
 544 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
 545   TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
 546 #define TYPE_FIELD_IGNORE_BITS(thistype) \
 547   TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
 548 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
 549   TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
 550 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
 551   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
 552 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
 553   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
 554 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
 555   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
 556 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
 557   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
 558 #define TYPE_FIELD_PRIVATE(thistype, n) \
 559   (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
 560     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
 561 #define TYPE_FIELD_PROTECTED(thistype, n) \
 562   (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
 563     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
 564 #define TYPE_FIELD_IGNORE(thistype, n) \
 565   (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
 566     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
 567 #define TYPE_FIELD_VIRTUAL(thistype, n) \
 568        B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
 569
 570 #define TYPE_FIELD_STATIC(thistype, n) ((thistype)->fields[n].bitpos == -1)
 571 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) ((char *)(thistype)->fields[n].bitsize)
 572
 573 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
 574 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
 575 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
 576 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
 577 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
 578
 579 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
 580 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
 581 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
 582 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_ARG_TYPES ((thisfn)[n].type)
 583 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
 584 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
 585 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
 586 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
 587 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
 588 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
 589 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
 590 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
 591 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
 592
 593 extern struct type *builtin_type_void;
 594 extern struct type *builtin_type_char;
 595 extern struct type *builtin_type_short;
 596 extern struct type *builtin_type_int;
 597 extern struct type *builtin_type_long;
 598 extern struct type *builtin_type_signed_char;
 599 extern struct type *builtin_type_unsigned_char;
 600 extern struct type *builtin_type_unsigned_short;
 601 extern struct type *builtin_type_unsigned_int;
 602 extern struct type *builtin_type_unsigned_long;
 603 extern struct type *builtin_type_float;
 604 extern struct type *builtin_type_double;
 605 extern struct type *builtin_type_long_double;
 606 extern struct type *builtin_type_complex;
 607 extern struct type *builtin_type_double_complex;
 608 extern struct type *builtin_type_string;
 609
 610 /* This type represents a type that was unrecognized in symbol
 611    read-in.  */
 612
 613 extern struct type *builtin_type_error;
 614
 615 extern struct type *builtin_type_long_long;
 616 extern struct type *builtin_type_unsigned_long_long;
 617
 618 /* Modula-2 types */
 619
 620 extern struct type *builtin_type_m2_char;
 621 extern struct type *builtin_type_m2_int;
 622 extern struct type *builtin_type_m2_card;
 623 extern struct type *builtin_type_m2_real;
 624 extern struct type *builtin_type_m2_bool;
 625
 626 /* Chill types */
 627
 628 extern struct type *builtin_type_chill_bool;
 629 extern struct type *builtin_type_chill_char;
 630 extern struct type *builtin_type_chill_long;
 631 extern struct type *builtin_type_chill_ulong;
 632 extern struct type *builtin_type_chill_real;
 633
 634 /* Fortran (F77) types */
 635
 636 extern struct type *builtin_type_f_character;
 637 extern struct type *builtin_type_f_integer;
 638 extern struct type *builtin_type_f_logical;
 639 extern struct type *builtin_type_f_logical_s1;
 640 extern struct type *builtin_type_f_logical_s2;
 641 extern struct type *builtin_type_f_integer;
 642 extern struct type *builtin_type_f_integer_s2;
 643 extern struct type *builtin_type_f_real;
 644 extern struct type *builtin_type_f_real_s8;
 645 extern struct type *builtin_type_f_real_s16;
 646 extern struct type *builtin_type_f_complex_s8;
 647 extern struct type *builtin_type_f_complex_s16;
 648 extern struct type *builtin_type_f_complex_s32;
 649 extern struct type *builtin_type_f_void;
 650
 651 /* Maximum and minimum values of built-in types */
 652
 653 #define MAX_OF_TYPE(t)  \
 654    TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
 655     : MAX_OF_SIZE(TYPE_LENGTH(t))
 656
 657 #define MIN_OF_TYPE(t)  \
 658    TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
 659     : MIN_OF_SIZE(TYPE_LENGTH(t))
 660
 661 /* Allocate space for storing data associated with a particular type.
 662    We ensure that the space is allocated using the same mechanism that
 663    was used to allocate the space for the type structure itself.  I.E.
 664    if the type is on an objfile's type_obstack, then the space for data
 665    associated with that type will also be allocated on the type_obstack.
 666    If the type is not associated with any particular objfile (such as
 667    builtin types), then the data space will be allocated with xmalloc,
 668    the same as for the type structure. */
 669
 670 #define TYPE_ALLOC(t,size)  \
 671    (TYPE_OBJFILE (t) != NULL  \
 672     ? obstack_alloc (&TYPE_OBJFILE (t) -> type_obstack, size) \
 673     : xmalloc (size))
 674
 675 extern struct type *
 676 alloc_type PARAMS ((struct objfile *));
 677
 678 extern struct type *
 679 init_type PARAMS ((enum type_code, int, int, char *, struct objfile *));
 680
 681 extern struct type *
 682 lookup_reference_type PARAMS ((struct type *));
 683
 684 extern struct type *
 685 make_reference_type PARAMS ((struct type *, struct type **));
 686
 687 extern struct type *
 688 lookup_member_type PARAMS ((struct type *, struct type *));
 689
 690 extern void
 691 smash_to_method_type PARAMS ((struct type *, struct type *, struct type *,
 692                               struct type **));
 693
 694 extern void
 695 smash_to_member_type PARAMS ((struct type *, struct type *, struct type *));
 696
 697 extern struct type *
 698 allocate_stub_method PARAMS ((struct type *));
 699
 700 extern char *
 701 type_name_no_tag PARAMS ((const struct type *));
 702
 703 extern struct type *
 704 lookup_struct_elt_type PARAMS ((struct type *, char *, int));
 705
 706 extern struct type *
 707 make_pointer_type PARAMS ((struct type *, struct type **));
 708
 709 extern struct type *
 710 lookup_pointer_type PARAMS ((struct type *));
 711
 712 extern struct type *
 713 make_function_type PARAMS ((struct type *, struct type **));
 714
 715 extern struct type *
 716 lookup_function_type PARAMS ((struct type *));
 717
 718 extern struct type *
 719 create_range_type PARAMS ((struct type *, struct type *, int, int));
 720
 721 extern struct type *
 722 create_array_type PARAMS ((struct type *, struct type *, struct type *));
 723
 724 extern struct type *
 725 create_string_type PARAMS ((struct type *, struct type *));
 726
 727 extern struct type *f77_create_literal_string_type PARAMS ((struct type *,
 728                                                             struct type *));
 729
 730 extern struct type *create_set_type PARAMS ((struct type *, struct type *));
 731
 732 extern struct type *f77_create_literal_complex_type PARAMS ((struct type *,
 733                                                              struct type *));
 734
 735 extern int chill_varying_type PARAMS ((struct type*));
 736
 737 extern struct type *
 738 lookup_unsigned_typename PARAMS ((char *));
 739
 740 extern struct type *
 741 lookup_signed_typename PARAMS ((char *));
 742
 743 extern void
 744 check_stub_type PARAMS ((struct type *));
 745
 746 extern void
 747 check_stub_method PARAMS ((struct type *, int, int));
 748
 749 extern struct type *
 750 lookup_primitive_typename PARAMS ((char *));
 751
 752 extern char *
 753 gdb_mangle_name PARAMS ((struct type *, int, int));
 754
 755 extern struct type *
 756 builtin_type PARAMS ((char **));
 757
 758 extern struct type *
 759 lookup_typename PARAMS ((char *, struct block *, int));
 760
 761 extern struct type *
 762 lookup_template_type PARAMS ((char *, struct type *, struct block *));
 763
 764 extern struct type *
 765 lookup_fundamental_type PARAMS ((struct objfile *, int));
 766
 767 extern void
 768 fill_in_vptr_fieldno PARAMS ((struct type *));
 769
 770 #if MAINTENANCE_CMDS
 771 extern void recursive_dump_type PARAMS ((struct type *, int));
 772 #endif
 773
 774 /* printcmd.c */
 775
 776 extern void
 777 print_scalar_formatted PARAMS ((char *, struct type *, int, int, GDB_FILE *));
 778
 779 extern int can_dereference PARAMS ((struct type *));
 780
 781 #if MAINTENANCE_CMDS
 782 extern void maintenance_print_type PARAMS ((char *, int));
 783 #endif
 784
 785 #endif  /* GDBTYPES_H */