gdb/gdbtypes.h

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