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