gdb/gdbtypes.h

   1 /* Internal type definitions for GDB.
   2
   3    Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   4    2001, 2002, 2003 Free Software Foundation, Inc.
   5
   6    Contributed by Cygnus Support, using pieces from other GDB modules.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place - Suite 330,
  23    Boston, MA 02111-1307, USA.  */
  24
  25 #if !defined (GDBTYPES_H)
  26 #define GDBTYPES_H 1
  27
  28 /* Forward declarations for prototypes.  */
  29 struct block;
  30
  31 /* Codes for `fundamental types'.  This is a monstrosity based on the
  32    bogus notion that there are certain compiler-independent
  33    `fundamental types'.  None of these is well-defined (how big is
  34    FT_SHORT?  Does it depend on the language?  How does the
  35    language-specific code know which type to correlate to FT_SHORT?)  */
  36
  37 #define FT_VOID                 0
  38 #define FT_BOOLEAN              1
  39 #define FT_CHAR                 2       /* we use this for not-unsigned C/C++ chars */
  40 #define FT_SIGNED_CHAR          3       /* we use this for C++ signed chars */
  41 #define FT_UNSIGNED_CHAR        4       /* we use this for C/C++ unsigned chars */
  42 #define FT_SHORT                5
  43 #define FT_SIGNED_SHORT         6
  44 #define FT_UNSIGNED_SHORT       7
  45 #define FT_INTEGER              8
  46 #define FT_SIGNED_INTEGER       9
  47 #define FT_UNSIGNED_INTEGER     10
  48 #define FT_LONG                 11
  49 #define FT_SIGNED_LONG          12
  50 #define FT_UNSIGNED_LONG        13
  51 #define FT_LONG_LONG            14
  52 #define FT_SIGNED_LONG_LONG     15
  53 #define FT_UNSIGNED_LONG_LONG   16
  54 #define FT_FLOAT                17
  55 #define FT_DBL_PREC_FLOAT       18
  56 #define FT_EXT_PREC_FLOAT       19
  57 #define FT_COMPLEX              20
  58 #define FT_DBL_PREC_COMPLEX     21
  59 #define FT_EXT_PREC_COMPLEX     22
  60 #define FT_STRING               23
  61 #define FT_FIXED_DECIMAL        24
  62 #define FT_FLOAT_DECIMAL        25
  63 #define FT_BYTE                 26
  64 #define FT_UNSIGNED_BYTE        27
  65 #define FT_TEMPLATE_ARG         28
  66
  67 #define FT_NUM_MEMBERS          29      /* Highest FT_* above, plus one. */
  68
  69 /* Some macros for char-based bitfields.  */
  70
  71 #define B_SET(a,x)      ((a)[(x)>>3] |= (1 << ((x)&7)))
  72 #define B_CLR(a,x)      ((a)[(x)>>3] &= ~(1 << ((x)&7)))
  73 #define B_TST(a,x)      ((a)[(x)>>3] & (1 << ((x)&7)))
  74 #define B_TYPE          unsigned char
  75 #define B_BYTES(x)      ( 1 + ((x)>>3) )
  76 #define B_CLRALL(a,x)   memset ((a), 0, B_BYTES(x))
  77
  78 /* Different kinds of data types are distinguished by the `code' field.  */
  79
  80 enum type_code
  81   {
  82     TYPE_CODE_UNDEF,            /* Not used; catches errors */
  83     TYPE_CODE_PTR,              /* Pointer type */
  84     TYPE_CODE_ARRAY,            /* Array type with lower & upper bounds. */
  85     TYPE_CODE_STRUCT,           /* C struct or Pascal record */
  86     TYPE_CODE_UNION,            /* C union or Pascal variant part */
  87     TYPE_CODE_ENUM,             /* Enumeration type */
  88     TYPE_CODE_FUNC,             /* Function type */
  89     TYPE_CODE_INT,              /* Integer type */
  90
  91     /* Floating type.  This is *NOT* a complex type.  Beware, there are parts
  92        of GDB which bogusly assume that TYPE_CODE_FLT can mean complex.  */
  93     TYPE_CODE_FLT,
  94
  95     /* Void type.  The length field specifies the length (probably always
  96        one) which is used in pointer arithmetic involving pointers to
  97        this type, but actually dereferencing such a pointer is invalid;
  98        a void type has no length and no actual representation in memory
  99        or registers.  A pointer to a void type is a generic pointer.  */
 100     TYPE_CODE_VOID,
 101
 102     TYPE_CODE_SET,              /* Pascal sets */
 103     TYPE_CODE_RANGE,            /* Range (integers within spec'd bounds) */
 104
 105     /* A string type which is like an array of character but prints
 106        differently (at least for (the deleted) CHILL).  It does not
 107        contain a length field as Pascal strings (for many Pascals,
 108        anyway) do; if we want to deal with such strings, we should use
 109        a new type code.  */
 110     TYPE_CODE_STRING,
 111
 112     /* String of bits; like TYPE_CODE_SET but prints differently (at
 113        least for (the deleted) CHILL).  */
 114     TYPE_CODE_BITSTRING,
 115
 116     /* Unknown type.  The length field is valid if we were able to
 117        deduce that much about the type, or 0 if we don't even know that.  */
 118     TYPE_CODE_ERROR,
 119
 120     /* C++ */
 121     TYPE_CODE_MEMBER,           /* Member type */
 122     TYPE_CODE_METHOD,           /* Method type */
 123     TYPE_CODE_REF,              /* C++ Reference types */
 124
 125     TYPE_CODE_CHAR,             /* *real* character type */
 126
 127     /* Boolean type.  0 is false, 1 is true, and other values are non-boolean
 128        (e.g. FORTRAN "logical" used as unsigned int).  */
 129     TYPE_CODE_BOOL,
 130
 131     /* Fortran */
 132     TYPE_CODE_COMPLEX,          /* Complex float */
 133
 134     TYPE_CODE_TYPEDEF,
 135     TYPE_CODE_TEMPLATE,         /* C++ template */
 136     TYPE_CODE_TEMPLATE_ARG      /* C++ template arg */
 137
 138   };
 139
 140 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
 141    alias for TYPE_CODE_STRUCT.  This is for DWARF, which has a distinct
 142    "class" attribute.  Perhaps we should actually have a separate TYPE_CODE
 143    so that we can print "class" or "struct" depending on what the debug
 144    info said.  It's not clear we should bother.  */
 145
 146 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
 147
 148 /* Some bits for the type's flags word, and macros to test them. */
 149
 150 /* Unsigned integer type.  If this is not set for a TYPE_CODE_INT, the
 151    type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */
 152
 153 #define TYPE_FLAG_UNSIGNED      (1 << 0)
 154 #define TYPE_UNSIGNED(t)        (TYPE_FLAGS (t) & TYPE_FLAG_UNSIGNED)
 155
 156 /* No sign for this type.  In C++, "char", "signed char", and "unsigned
 157    char" are distinct types; so we need an extra flag to indicate the
 158    absence of a sign! */
 159
 160 #define TYPE_FLAG_NOSIGN        (1 << 1)
 161 #define TYPE_NOSIGN(t)          (TYPE_FLAGS (t) & TYPE_FLAG_NOSIGN)
 162
 163 /* This appears in a type's flags word if it is a stub type (e.g., if
 164    someone referenced a type that wasn't defined in a source file
 165    via (struct sir_not_appearing_in_this_film *)).  */
 166
 167 #define TYPE_FLAG_STUB          (1 << 2)
 168 #define TYPE_STUB(t)            (TYPE_FLAGS (t) & TYPE_FLAG_STUB)
 169
 170 /* The target type of this type is a stub type, and this type needs to
 171    be updated if it gets un-stubbed in check_typedef.
 172    Used for arrays and ranges, in which TYPE_LENGTH of the array/range
 173    gets set based on the TYPE_LENGTH of the target type.
 174    Also, set for TYPE_CODE_TYPEDEF. */
 175
 176 #define TYPE_FLAG_TARGET_STUB   (1 << 3)
 177 #define TYPE_TARGET_STUB(t)     (TYPE_FLAGS (t) & TYPE_FLAG_TARGET_STUB)
 178
 179 /* Static type.  If this is set, the corresponding type had
 180  * a static modifier.
 181  * Note: This may be unnecessary, since static data members
 182  * are indicated by other means (bitpos == -1)
 183  */
 184
 185 #define TYPE_FLAG_STATIC        (1 << 4)
 186 #define TYPE_STATIC(t)          (TYPE_FLAGS (t) & TYPE_FLAG_STATIC)
 187
 188 /* Constant type.  If this is set, the corresponding type has a
 189  * const modifier.
 190  */
 191
 192 #define TYPE_FLAG_CONST         (1 << 5)
 193 #define TYPE_CONST(t)           (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_CONST)
 194
 195 /* Volatile type.  If this is set, the corresponding type has a
 196  * volatile modifier.
 197  */
 198
 199 #define TYPE_FLAG_VOLATILE      (1 << 6)
 200 #define TYPE_VOLATILE(t)        (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_VOLATILE)
 201
 202
 203 /* This is a function type which appears to have a prototype.  We need this
 204    for function calls in order to tell us if it's necessary to coerce the args,
 205    or to just do the standard conversions.  This is used with a short field. */
 206
 207 #define TYPE_FLAG_PROTOTYPED    (1 << 7)
 208 #define TYPE_PROTOTYPED(t)      (TYPE_FLAGS (t) & TYPE_FLAG_PROTOTYPED)
 209
 210 /* This flag is used to indicate that processing for this type
 211    is incomplete.
 212
 213    (Mostly intended for HP platforms, where class methods, for
 214    instance, can be encountered before their classes in the debug
 215    info; the incomplete type has to be marked so that the class and
 216    the method can be assigned correct types.) */
 217
 218 #define TYPE_FLAG_INCOMPLETE    (1 << 8)
 219 #define TYPE_INCOMPLETE(t)      (TYPE_FLAGS (t) & TYPE_FLAG_INCOMPLETE)
 220
 221 /* Instruction-space delimited type.  This is for Harvard architectures
 222    which have separate instruction and data address spaces (and perhaps
 223    others).
 224
 225    GDB usually defines a flat address space that is a superset of the
 226    architecture's two (or more) address spaces, but this is an extension
 227    of the architecture's model.
 228
 229    If TYPE_FLAG_INST is set, an object of the corresponding type
 230    resides in instruction memory, even if its address (in the extended
 231    flat address space) does not reflect this.
 232
 233    Similarly, if TYPE_FLAG_DATA is set, then an object of the
 234    corresponding type resides in the data memory space, even if
 235    this is not indicated by its (flat address space) address.
 236
 237    If neither flag is set, the default space for functions / methods
 238    is instruction space, and for data objects is data memory.  */
 239
 240 #define TYPE_FLAG_CODE_SPACE    (1 << 9)
 241 #define TYPE_CODE_SPACE(t)      (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_CODE_SPACE)
 242
 243 #define TYPE_FLAG_DATA_SPACE    (1 << 10)
 244 #define TYPE_DATA_SPACE(t)      (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_DATA_SPACE)
 245
 246 /* FIXME drow/2002-06-03:  Only used for methods, but applies as well
 247    to functions.  */
 248
 249 #define TYPE_FLAG_VARARGS       (1 << 11)
 250 #define TYPE_VARARGS(t)         (TYPE_FLAGS (t) & TYPE_FLAG_VARARGS)
 251
 252 /* Identify a vector type.  Gcc is handling this by adding an extra
 253    attribute to the array type.  We slurp that in as a new flag of a
 254    type.  This is used only in dwarf2read.c.  */
 255 #define TYPE_FLAG_VECTOR        (1 << 12)
 256 #define TYPE_VECTOR(t)          (TYPE_FLAGS (t) & TYPE_FLAG_VECTOR)
 257
 258 /* Address class flags.  Some environments provide for pointers whose
 259    size is different from that of a normal pointer or address types
 260    where the bits are interpreted differently than normal addresses.  The
 261    TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific
 262    ways to represent these different types of address classes.  */
 263 #define TYPE_FLAG_ADDRESS_CLASS_1 (1 << 13)
 264 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
 265                                  & TYPE_FLAG_ADDRESS_CLASS_1)
 266 #define TYPE_FLAG_ADDRESS_CLASS_2 (1 << 14)
 267 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
 268                                  & TYPE_FLAG_ADDRESS_CLASS_2)
 269 #define TYPE_FLAG_ADDRESS_CLASS_ALL (TYPE_FLAG_ADDRESS_CLASS_1 \
 270                                      | TYPE_FLAG_ADDRESS_CLASS_2)
 271 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
 272                                    & TYPE_FLAG_ADDRESS_CLASS_ALL)
 273
 274 struct main_type
 275 {
 276   /* Code for kind of type */
 277
 278   enum type_code code;
 279
 280   /* Name of this type, or NULL if none.
 281
 282      This is used for printing only, except by poorly designed C++ code.
 283      For looking up a name, look for a symbol in the VAR_NAMESPACE.  */
 284
 285   char *name;
 286
 287   /* Tag name for this type, or NULL if none.  This means that the
 288      name of the type consists of a keyword followed by the tag name.
 289      Which keyword is determined by the type code ("struct" for
 290      TYPE_CODE_STRUCT, etc.).  As far as I know C/C++ are the only languages
 291      with this feature.
 292
 293      This is used for printing only, except by poorly designed C++ code.
 294      For looking up a name, look for a symbol in the STRUCT_NAMESPACE.
 295      One more legitimate use is that if TYPE_FLAG_STUB is set, this is
 296      the name to use to look for definitions in other files.  */
 297
 298   char *tag_name;
 299
 300   /* FIXME, these should probably be restricted to a Fortran-specific
 301      field in some fashion.  */
 302 #define BOUND_CANNOT_BE_DETERMINED   5
 303 #define BOUND_BY_REF_ON_STACK        4
 304 #define BOUND_BY_VALUE_ON_STACK      3
 305 #define BOUND_BY_REF_IN_REG          2
 306 #define BOUND_BY_VALUE_IN_REG        1
 307 #define BOUND_SIMPLE                 0
 308   int upper_bound_type;
 309   int lower_bound_type;
 310
 311   /* Every type is now associated with a particular objfile, and the
 312      type is allocated on the type_obstack for that objfile.  One problem
 313      however, is that there are times when gdb allocates new types while
 314      it is not in the process of reading symbols from a particular objfile.
 315      Fortunately, these happen when the type being created is a derived
 316      type of an existing type, such as in lookup_pointer_type().  So
 317      we can just allocate the new type using the same objfile as the
 318      existing type, but to do this we need a backpointer to the objfile
 319      from the existing type.  Yes this is somewhat ugly, but without
 320      major overhaul of the internal type system, it can't be avoided
 321      for now. */
 322
 323   struct objfile *objfile;
 324
 325   /* For a pointer type, describes the type of object pointed to.
 326      For an array type, describes the type of the elements.
 327      For a function or method type, describes the type of the return value.
 328      For a range type, describes the type of the full range.
 329      For a complex type, describes the type of each coordinate.
 330      Unused otherwise.  */
 331
 332   struct type *target_type;
 333
 334   /* Flags about this type.  */
 335
 336   int flags;
 337
 338   /* Number of fields described for this type */
 339
 340   short nfields;
 341
 342   /* For structure and union types, a description of each field.
 343      For set and pascal array types, there is one "field",
 344      whose type is the domain type of the set or array.
 345      For range types, there are two "fields",
 346      the minimum and maximum values (both inclusive).
 347      For enum types, each possible value is described by one "field".
 348      For a function or method type, a "field" for each parameter.
 349      For C++ classes, there is one field for each base class (if it is
 350      a derived class) plus one field for each class data member.  Member
 351      functions are recorded elsewhere.
 352
 353      Using a pointer to a separate array of fields
 354      allows all types to have the same size, which is useful
 355      because we can allocate the space for a type before
 356      we know what to put in it.  */
 357
 358   struct field
 359   {
 360     union field_location
 361     {
 362       /* Position of this field, counting in bits from start of
 363          containing structure.
 364          For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB.
 365          For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB.
 366          For a range bound or enum value, this is the value itself. */
 367
 368       int bitpos;
 369
 370       /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr
 371          is the location (in the target) of the static field.
 372          Otherwise, physname is the mangled label of the static field. */
 373
 374       CORE_ADDR physaddr;
 375       char *physname;
 376     }
 377     loc;
 378
 379     /* For a function or member type, this is 1 if the argument is marked
 380        artificial.  Artificial arguments should not be shown to the
 381        user.  */
 382     unsigned int artificial : 1;
 383
 384     /* This flag is zero for non-static fields, 1 for fields whose location
 385        is specified by the label loc.physname, and 2 for fields whose location
 386        is specified by loc.physaddr.  */
 387
 388     unsigned int static_kind : 2;
 389
 390     /* Size of this field, in bits, or zero if not packed.
 391        For an unpacked field, the field's type's length
 392        says how many bytes the field occupies.  */
 393
 394     unsigned int bitsize : 29;
 395
 396     /* In a struct or union type, type of this field.
 397        In a function or member type, type of this argument.
 398        In an array type, the domain-type of the array.  */
 399
 400     struct type *type;
 401
 402     /* Name of field, value or argument.
 403        NULL for range bounds, array domains, and member function
 404        arguments.  */
 405
 406     char *name;
 407
 408   } *fields;
 409
 410   /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE
 411      is the base class which defined the virtual function table pointer.
 412
 413      For types that are pointer to member types (TYPE_CODE_MEMBER),
 414      VPTR_BASETYPE is the type that this pointer is a member of.
 415
 416      For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
 417      type that contains the method.
 418
 419      Unused otherwise.  */
 420
 421   struct type *vptr_basetype;
 422
 423   /* Field number of the virtual function table pointer in
 424      VPTR_BASETYPE.  If -1, we were unable to find the virtual
 425      function table pointer in initial symbol reading, and
 426      fill_in_vptr_fieldno should be called to find it if possible.
 427
 428      Unused if this type does not have virtual functions.  */
 429
 430   int vptr_fieldno;
 431
 432   /* Slot to point to additional language-specific fields of this type.  */
 433
 434   union type_specific
 435   {
 436     /* CPLUS_STUFF is for TYPE_CODE_STRUCT.  It is initialized to point to
 437        cplus_struct_default, a default static instance of a struct
 438        cplus_struct_type. */
 439
 440     struct cplus_struct_type *cplus_stuff;
 441
 442     /* FLOATFORMAT is for TYPE_CODE_FLT.  It is a pointer to the
 443        floatformat object that describes the floating-point value
 444        that resides within the type.  */
 445
 446     const struct floatformat *floatformat;
 447   } type_specific;
 448 };
 449
 450 /* A ``struct type'' describes a particular instance of a type, with
 451    some particular qualification.  */
 452 struct type
 453 {
 454   /* Type that is a pointer to this type.
 455      NULL if no such pointer-to type is known yet.
 456      The debugger may add the address of such a type
 457      if it has to construct one later.  */
 458
 459   struct type *pointer_type;
 460
 461   /* C++: also need a reference type.  */
 462
 463   struct type *reference_type;
 464
 465   /* Variant chain.  This points to a type that differs from this one only
 466      in qualifiers and length.  Currently, the possible qualifiers are
 467      const, volatile, code-space, data-space, and address class.  The
 468      length may differ only when one of the address class flags are set.
 469      The variants are linked in a circular ring and share MAIN_TYPE.  */
 470   struct type *chain;
 471
 472   /* Flags specific to this instance of the type, indicating where
 473      on the ring we are.  */
 474   int instance_flags;
 475
 476   /* Length of storage for a value of this type.  This is what
 477      sizeof(type) would return; use it for address arithmetic,
 478      memory reads and writes, etc.  This size includes padding.  For
 479      example, an i386 extended-precision floating point value really
 480      only occupies ten bytes, but most ABI's declare its size to be
 481      12 bytes, to preserve alignment.  A `struct type' representing
 482      such a floating-point type would have a `length' value of 12,
 483      even though the last two bytes are unused.
 484
 485      There's a bit of a host/target mess here, if you're concerned
 486      about machines whose bytes aren't eight bits long, or who don't
 487      have byte-addressed memory.  Various places pass this to memcpy
 488      and such, meaning it must be in units of host bytes.  Various
 489      other places expect they can calculate addresses by adding it
 490      and such, meaning it must be in units of target bytes.  For
 491      some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
 492      and TARGET_CHAR_BIT will be (say) 32, this is a problem.
 493
 494      One fix would be to make this field in bits (requiring that it
 495      always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
 496      the other choice would be to make it consistently in units of
 497      HOST_CHAR_BIT.  However, this would still fail to address
 498      machines based on a ternary or decimal representation.  */
 499
 500   unsigned length;
 501
 502   /* Core type, shared by a group of qualified types.  */
 503   struct main_type *main_type;
 504 };
 505
 506 #define NULL_TYPE ((struct type *) 0)
 507
 508 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
 509    nodes.  */
 510
 511 struct cplus_struct_type
 512   {
 513     /* Number of base classes this type derives from.  The baseclasses are
 514        stored in the first N_BASECLASSES fields (i.e. the `fields' field of
 515        the struct type).  I think only the `type' field of such a field has
 516        any meaning.  */
 517
 518     short n_baseclasses;
 519
 520     /* Number of methods with unique names.  All overloaded methods with
 521        the same name count only once. */
 522
 523     short nfn_fields;
 524
 525     /* Number of methods described for this type, not including the
 526        methods that it derives from.  */
 527
 528     short nfn_fields_total;
 529
 530     /* The "declared_type" field contains a code saying how the
 531        user really declared this type, e.g., "class s", "union s",
 532        "struct s".
 533        The 3 above things come out from the C++ compiler looking like classes,
 534        but we keep track of the real declaration so we can give
 535        the correct information on "ptype". (Note: TEMPLATE may not
 536        belong in this list...)  */
 537
 538 #define DECLARED_TYPE_CLASS 0
 539 #define DECLARED_TYPE_UNION 1
 540 #define DECLARED_TYPE_STRUCT 2
 541 #define DECLARED_TYPE_TEMPLATE 3
 542     short declared_type;        /* One of the above codes */
 543
 544     /* For derived classes, the number of base classes is given by n_baseclasses
 545        and virtual_field_bits is a bit vector containing one bit per base class.
 546        If the base class is virtual, the corresponding bit will be set.
 547        I.E, given:
 548
 549        class A{};
 550        class B{};
 551        class C : public B, public virtual A {};
 552
 553        B is a baseclass of C; A is a virtual baseclass for C.
 554        This is a C++ 2.0 language feature. */
 555
 556     B_TYPE *virtual_field_bits;
 557
 558     /* For classes with private fields, the number of fields is given by
 559        nfields and private_field_bits is a bit vector containing one bit
 560        per field.
 561        If the field is private, the corresponding bit will be set. */
 562
 563     B_TYPE *private_field_bits;
 564
 565     /* For classes with protected fields, the number of fields is given by
 566        nfields and protected_field_bits is a bit vector containing one bit
 567        per field.
 568        If the field is private, the corresponding bit will be set. */
 569
 570     B_TYPE *protected_field_bits;
 571
 572     /* for classes with fields to be ignored, either this is optimized out
 573        or this field has length 0 */
 574
 575     B_TYPE *ignore_field_bits;
 576
 577     /* For classes, structures, and unions, a description of each field,
 578        which consists of an overloaded name, followed by the types of
 579        arguments that the method expects, and then the name after it
 580        has been renamed to make it distinct.
 581
 582        fn_fieldlists points to an array of nfn_fields of these. */
 583
 584     struct fn_fieldlist
 585       {
 586
 587         /* The overloaded name.  */
 588
 589         char *name;
 590
 591         /* The number of methods with this name.  */
 592
 593         int length;
 594
 595         /* The list of methods.  */
 596
 597         struct fn_field
 598           {
 599
 600             /* If is_stub is clear, this is the mangled name which we can
 601                look up to find the address of the method (FIXME: it would
 602                be cleaner to have a pointer to the struct symbol here
 603                instead).  */
 604
 605             /* If is_stub is set, this is the portion of the mangled
 606                name which specifies the arguments.  For example, "ii",
 607                if there are two int arguments, or "" if there are no
 608                arguments.  See gdb_mangle_name for the conversion from this
 609                format to the one used if is_stub is clear.  */
 610
 611             char *physname;
 612
 613             /* The function type for the method.
 614                (This comment used to say "The return value of the method",
 615                but that's wrong. The function type
 616                is expected here, i.e. something with TYPE_CODE_FUNC,
 617                and *not* the return-value type). */
 618
 619             struct type *type;
 620
 621             /* For virtual functions.
 622                First baseclass that defines this virtual function.   */
 623
 624             struct type *fcontext;
 625
 626             /* Attributes. */
 627
 628             unsigned int is_const:1;
 629             unsigned int is_volatile:1;
 630             unsigned int is_private:1;
 631             unsigned int is_protected:1;
 632             unsigned int is_public:1;
 633             unsigned int is_abstract:1;
 634             unsigned int is_static:1;
 635             unsigned int is_final:1;
 636             unsigned int is_synchronized:1;
 637             unsigned int is_native:1;
 638             unsigned int is_artificial:1;
 639
 640             /* A stub method only has some fields valid (but they are enough
 641                to reconstruct the rest of the fields).  */
 642             unsigned int is_stub:1;
 643
 644             /* C++ method that is inlined */
 645             unsigned int is_inlined:1;
 646
 647             /* Unused.  */
 648             unsigned int dummy:3;
 649
 650             /* Index into that baseclass's virtual function table,
 651                minus 2; else if static: VOFFSET_STATIC; else: 0.  */
 652
 653             unsigned int voffset:16;
 654
 655 #define VOFFSET_STATIC 1
 656
 657           }
 658          *fn_fields;
 659
 660       }
 661      *fn_fieldlists;
 662
 663     /* If this "struct type" describes a template, then it
 664      * has arguments. "template_args" points to an array of
 665      * template arg descriptors, of length "ntemplate_args".
 666      * The only real information in each of these template arg descriptors
 667      * is a name. "type" will typically just point to a "struct type" with
 668      * the placeholder TYPE_CODE_TEMPLATE_ARG type.
 669      */
 670     short ntemplate_args;
 671     struct template_arg
 672       {
 673         char *name;
 674         struct type *type;
 675       }
 676      *template_args;
 677
 678     /* If this "struct type" describes a template, it has a list
 679      * of instantiations. "instantiations" is a pointer to an array
 680      * of type's, one representing each instantiation. There
 681      * are "ninstantiations" elements in this array.
 682      */
 683     short ninstantiations;
 684     struct type **instantiations;
 685
 686     /* The following points to information relevant to the runtime model
 687      * of the compiler.
 688      * Currently being used only for HP's ANSI C++ compiler.
 689      * (This type may have to be changed/enhanced for other compilers.)
 690      *
 691      * RUNTIME_PTR is NULL if there is no runtime information (currently
 692      * this means the type was not compiled by HP aCC).
 693      *
 694      * Fields in structure pointed to:
 695      * ->HAS_VTABLE : 0 => no virtual table, 1 => vtable present
 696      *
 697      * ->PRIMARY_BASE points to the first non-virtual base class that has
 698      * a virtual table.
 699      *
 700      * ->VIRTUAL_BASE_LIST points to a list of struct type * pointers that
 701      * point to the type information for all virtual bases among this type's
 702      * ancestors.
 703      */
 704     struct runtime_info
 705       {
 706         short has_vtable;
 707         struct type *primary_base;
 708         struct type **virtual_base_list;
 709       }
 710      *runtime_ptr;
 711
 712     /* Pointer to information about enclosing scope, if this is a
 713      * local type.  If it is not a local type, this is NULL
 714      */
 715     struct local_type_info
 716       {
 717         char *file;
 718         int line;
 719       }
 720      *localtype_ptr;
 721   };
 722
 723 /* Struct used in computing virtual base list */
 724 struct vbase
 725   {
 726     struct type *vbasetype;     /* pointer to virtual base */
 727     struct vbase *next;         /* next in chain */
 728   };
 729
 730 /* Struct used for ranking a function for overload resolution */
 731 struct badness_vector
 732   {
 733     int length;
 734     int *rank;
 735   };
 736
 737 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
 738    this shared static structure. */
 739
 740 extern const struct cplus_struct_type cplus_struct_default;
 741
 742 extern void allocate_cplus_struct_type (struct type *);
 743
 744 #define INIT_CPLUS_SPECIFIC(type) \
 745   (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
 746 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
 747 #define HAVE_CPLUS_STRUCT(type) \
 748   (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
 749
 750 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
 751 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
 752 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
 753 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
 754 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
 755 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
 756 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
 757 #define TYPE_CHAIN(thistype) (thistype)->chain
 758 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
 759    But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
 760    so you only have to call check_typedef once.  Since allocate_value
 761    calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe.  */
 762 #define TYPE_LENGTH(thistype) (thistype)->length
 763 #define TYPE_OBJFILE(thistype) TYPE_MAIN_TYPE(thistype)->objfile
 764 #define TYPE_FLAGS(thistype) TYPE_MAIN_TYPE(thistype)->flags
 765 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
 766    type, you need to do TYPE_CODE (check_type (this_type)). */
 767 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
 768 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
 769 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->fields
 770 #define TYPE_TEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->template_args
 771 #define TYPE_INSTANTIATIONS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->instantiations
 772
 773 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
 774 #define TYPE_LOW_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 0)
 775 #define TYPE_HIGH_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 1)
 776
 777 /* Moto-specific stuff for FORTRAN arrays */
 778
 779 #define TYPE_ARRAY_UPPER_BOUND_TYPE(thistype) \
 780         TYPE_MAIN_TYPE(thistype)->upper_bound_type
 781 #define TYPE_ARRAY_LOWER_BOUND_TYPE(thistype) \
 782         TYPE_MAIN_TYPE(thistype)->lower_bound_type
 783
 784 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
 785    (TYPE_FIELD_BITPOS((TYPE_FIELD_TYPE((arraytype),0)),1))
 786
 787 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
 788    (TYPE_FIELD_BITPOS((TYPE_FIELD_TYPE((arraytype),0)),0))
 789
 790 /* C++ */
 791
 792 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
 793 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
 794 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
 795 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
 796 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
 797 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
 798 #define TYPE_NTEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->ntemplate_args
 799 #define TYPE_NINSTANTIATIONS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->ninstantiations
 800 #define TYPE_DECLARED_TYPE(thistype) TYPE_CPLUS_SPECIFIC(thistype)->declared_type
 801 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
 802 #define TYPE_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
 803 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
 804 #define TYPE_BASECLASS(thistype,index) TYPE_MAIN_TYPE(thistype)->fields[index].type
 805 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
 806 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_MAIN_TYPE(thistype)->fields[index].name
 807 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
 808 #define BASETYPE_VIA_PUBLIC(thistype, index) \
 809   ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
 810
 811 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
 812   (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
 813     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
 814
 815 #define FIELD_TYPE(thisfld) ((thisfld).type)
 816 #define FIELD_NAME(thisfld) ((thisfld).name)
 817 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
 818 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
 819 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
 820 #define FIELD_STATIC_KIND(thisfld) ((thisfld).static_kind)
 821 #define FIELD_PHYSNAME(thisfld) ((thisfld).loc.physname)
 822 #define FIELD_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
 823 #define SET_FIELD_PHYSNAME(thisfld, name) \
 824   ((thisfld).static_kind = 1, FIELD_PHYSNAME(thisfld) = (name))
 825 #define SET_FIELD_PHYSADDR(thisfld, name) \
 826   ((thisfld).static_kind = 2, FIELD_PHYSADDR(thisfld) = (name))
 827 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->fields[n]
 828 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
 829 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
 830 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS(TYPE_FIELD(thistype,n))
 831 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
 832 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
 833 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
 834 #define TYPE_TEMPLATE_ARG(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->template_args[n]
 835 #define TYPE_INSTANTIATION(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->instantiations[n]
 836
 837 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
 838   TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
 839 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
 840   TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
 841 #define TYPE_FIELD_IGNORE_BITS(thistype) \
 842   TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
 843 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
 844   TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
 845 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
 846   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
 847 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
 848   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
 849 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
 850   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
 851 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
 852   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
 853 #define TYPE_FIELD_PRIVATE(thistype, n) \
 854   (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
 855     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
 856 #define TYPE_FIELD_PROTECTED(thistype, n) \
 857   (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
 858     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
 859 #define TYPE_FIELD_IGNORE(thistype, n) \
 860   (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
 861     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
 862 #define TYPE_FIELD_VIRTUAL(thistype, n) \
 863   (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
 864     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
 865
 866 #define TYPE_FIELD_STATIC(thistype, n) (TYPE_MAIN_TYPE (thistype)->fields[n].static_kind != 0)
 867 #define TYPE_FIELD_STATIC_KIND(thistype, n) TYPE_MAIN_TYPE (thistype)->fields[n].static_kind
 868 #define TYPE_FIELD_STATIC_HAS_ADDR(thistype, n) (TYPE_MAIN_TYPE (thistype)->fields[n].static_kind == 2)
 869 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_PHYSNAME(TYPE_FIELD(thistype, n))
 870 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_PHYSADDR(TYPE_FIELD(thistype, n))
 871
 872 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
 873 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
 874 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
 875 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
 876 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
 877
 878 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
 879 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
 880 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
 881 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
 882 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
 883 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
 884 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
 885 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
 886 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
 887 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
 888 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
 889 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
 890 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
 891 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
 892 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
 893 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
 894 #define TYPE_FN_FIELD_INLINED(thisfn, n) ((thisfn)[n].is_inlined)
 895 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
 896 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
 897 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
 898 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
 899
 900 #define TYPE_RUNTIME_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->runtime_ptr)
 901 #define TYPE_VTABLE(thistype) (TYPE_RUNTIME_PTR(thistype)->has_vtable)
 902 #define TYPE_HAS_VTABLE(thistype) (TYPE_RUNTIME_PTR(thistype) && TYPE_VTABLE(thistype))
 903 #define TYPE_PRIMARY_BASE(thistype) (TYPE_RUNTIME_PTR(thistype)->primary_base)
 904 #define TYPE_VIRTUAL_BASE_LIST(thistype) (TYPE_RUNTIME_PTR(thistype)->virtual_base_list)
 905
 906 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
 907 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
 908 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
 909
 910 #define TYPE_IS_OPAQUE(thistype) (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) ||        \
 911                                    (TYPE_CODE (thistype) == TYPE_CODE_UNION))        && \
 912                                   (TYPE_NFIELDS (thistype) == 0)                     && \
 913                                   (TYPE_CPLUS_SPECIFIC (thistype) && (TYPE_NFN_FIELDS (thistype) == 0)))
 914
 915
 916
 917 /* Implicit sizes */
 918 extern struct type *builtin_type_void;
 919 extern struct type *builtin_type_char;
 920 extern struct type *builtin_type_short;
 921 extern struct type *builtin_type_int;
 922 extern struct type *builtin_type_long;
 923 extern struct type *builtin_type_signed_char;
 924 extern struct type *builtin_type_unsigned_char;
 925 extern struct type *builtin_type_unsigned_short;
 926 extern struct type *builtin_type_unsigned_int;
 927 extern struct type *builtin_type_unsigned_long;
 928 extern struct type *builtin_type_float;
 929 extern struct type *builtin_type_double;
 930 extern struct type *builtin_type_long_double;
 931 extern struct type *builtin_type_complex;
 932 extern struct type *builtin_type_double_complex;
 933 extern struct type *builtin_type_string;
 934 extern struct type *builtin_type_bool;
 935
 936 /* Address/pointer types: */
 937 /* (C) Language `pointer to data' type.  Some target platforms use an
 938    implicitly {sign,zero} -extended 32 bit C language pointer on a 64
 939    bit ISA.  */
 940 extern struct type *builtin_type_void_data_ptr;
 941
 942 /* (C) Language `pointer to function returning void' type.  Since
 943    ANSI, C standards have explicitly said that pointers to functions
 944    and pointers to data are not interconvertible --- that is, you
 945    can't cast a function pointer to void * and back, and expect to get
 946    the same value.  However, all function pointer types are
 947    interconvertible, so void (*) () can server as a generic function
 948    pointer.  */
 949 extern struct type *builtin_type_void_func_ptr;
 950
 951 /* The target CPU's address type.  This is the ISA address size. */
 952 extern struct type *builtin_type_CORE_ADDR;
 953 /* The symbol table address type.  Some object file formats have a 32
 954    bit address type even though the TARGET has a 64 bit pointer type
 955    (cf MIPS). */
 956 extern struct type *builtin_type_bfd_vma;
 957
 958 /* Explicit sizes - see C9X <intypes.h> for naming scheme */
 959 extern struct type *builtin_type_int8;
 960 extern struct type *builtin_type_uint8;
 961 extern struct type *builtin_type_int16;
 962 extern struct type *builtin_type_uint16;
 963 extern struct type *builtin_type_int32;
 964 extern struct type *builtin_type_uint32;
 965 extern struct type *builtin_type_int64;
 966 extern struct type *builtin_type_uint64;
 967 extern struct type *builtin_type_int128;
 968 extern struct type *builtin_type_uint128;
 969
 970 /* SIMD types.  We inherit these names from GCC.  */
 971 extern struct type *builtin_type_v4sf;
 972 extern struct type *builtin_type_v4si;
 973 extern struct type *builtin_type_v16qi;
 974 extern struct type *builtin_type_v8qi;
 975 extern struct type *builtin_type_v8hi;
 976 extern struct type *builtin_type_v4hi;
 977 extern struct type *builtin_type_v2si;
 978
 979 /* Type for 64 bit vectors. */
 980 extern struct type *builtin_type_vec64;
 981 extern struct type *builtin_type_vec64i;
 982
 983 /* Type for 128 bit vectors. */
 984 extern struct type *builtin_type_vec128;
 985 extern struct type *builtin_type_vec128i;
 986
 987 /* Explicit floating-point formats.  See "floatformat.h".  */
 988 extern struct type *builtin_type_ieee_single_big;
 989 extern struct type *builtin_type_ieee_single_little;
 990 extern struct type *builtin_type_ieee_double_big;
 991 extern struct type *builtin_type_ieee_double_little;
 992 extern struct type *builtin_type_ieee_double_littlebyte_bigword;
 993 extern struct type *builtin_type_i387_ext;
 994 extern struct type *builtin_type_m68881_ext;
 995 extern struct type *builtin_type_i960_ext;
 996 extern struct type *builtin_type_m88110_ext;
 997 extern struct type *builtin_type_m88110_harris_ext;
 998 extern struct type *builtin_type_arm_ext_big;
 999 extern struct type *builtin_type_arm_ext_littlebyte_bigword;
1000 extern struct type *builtin_type_ia64_spill_big;
1001 extern struct type *builtin_type_ia64_spill_little;
1002 extern struct type *builtin_type_ia64_quad_big;
1003 extern struct type *builtin_type_ia64_quad_little;
1004
1005 /* We use this for the '/c' print format, because builtin_type_char is
1006    just a one-byte integral type, which languages less laid back than
1007    C will print as ... well, a one-byte integral type.  */
1008 extern struct type *builtin_type_true_char;
1009
1010 /* This type represents a type that was unrecognized in symbol
1011    read-in.  */
1012
1013 extern struct type *builtin_type_error;
1014
1015 extern struct type *builtin_type_long_long;
1016 extern struct type *builtin_type_unsigned_long_long;
1017
1018 /* Modula-2 types */
1019
1020 extern struct type *builtin_type_m2_char;
1021 extern struct type *builtin_type_m2_int;
1022 extern struct type *builtin_type_m2_card;
1023 extern struct type *builtin_type_m2_real;
1024 extern struct type *builtin_type_m2_bool;
1025
1026 /* Fortran (F77) types */
1027
1028 extern struct type *builtin_type_f_character;
1029 extern struct type *builtin_type_f_integer;
1030 extern struct type *builtin_type_f_integer_s2;
1031 extern struct type *builtin_type_f_logical;
1032 extern struct type *builtin_type_f_logical_s1;
1033 extern struct type *builtin_type_f_logical_s2;
1034 extern struct type *builtin_type_f_real;
1035 extern struct type *builtin_type_f_real_s8;
1036 extern struct type *builtin_type_f_real_s16;
1037 extern struct type *builtin_type_f_complex_s8;
1038 extern struct type *builtin_type_f_complex_s16;
1039 extern struct type *builtin_type_f_complex_s32;
1040 extern struct type *builtin_type_f_void;
1041
1042 /* RTTI for C++ */
1043 /* extern struct type *builtin_type_cxx_typeinfo; */
1044
1045 /* Maximum and minimum values of built-in types */
1046
1047 #define MAX_OF_TYPE(t)  \
1048    (TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
1049     : MAX_OF_SIZE(TYPE_LENGTH(t)))
1050
1051 #define MIN_OF_TYPE(t)  \
1052    (TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
1053     : MIN_OF_SIZE(TYPE_LENGTH(t)))
1054
1055 /* Allocate space for storing data associated with a particular type.
1056    We ensure that the space is allocated using the same mechanism that
1057    was used to allocate the space for the type structure itself.  I.E.
1058    if the type is on an objfile's type_obstack, then the space for data
1059    associated with that type will also be allocated on the type_obstack.
1060    If the type is not associated with any particular objfile (such as
1061    builtin types), then the data space will be allocated with xmalloc,
1062    the same as for the type structure. */
1063
1064 #define TYPE_ALLOC(t,size)  \
1065    (TYPE_OBJFILE (t) != NULL  \
1066     ? obstack_alloc (&TYPE_OBJFILE (t) -> type_obstack, size) \
1067     : xmalloc (size))
1068
1069 extern struct type *alloc_type (struct objfile *);
1070
1071 extern struct type *init_type (enum type_code, int, int, char *,
1072                                struct objfile *);
1073
1074 /* Helper functions to construct a struct or record type.  An
1075    initially empty type is created using init_composite_type().
1076    Fields are then added using append_struct_type_field().  A union
1077    type has its size set to the largest field.  A struct type has each
1078    field packed against the previous.  */
1079
1080 extern struct type *init_composite_type (char *name, enum type_code code);
1081 extern void append_composite_type_field (struct type *t, char *name,
1082                                          struct type *field);
1083
1084 extern struct type *lookup_reference_type (struct type *);
1085
1086 extern struct type *make_reference_type (struct type *, struct type **);
1087
1088 extern struct type *make_cv_type (int, int, struct type *, struct type **);
1089
1090 extern void replace_type (struct type *, struct type *);
1091
1092 extern int address_space_name_to_int (char *);
1093
1094 extern const char *address_space_int_to_name (int);
1095
1096 extern struct type *make_type_with_address_space (struct type *type,
1097                                                   int space_identifier);
1098
1099 extern struct type *lookup_member_type (struct type *, struct type *);
1100
1101 extern void
1102 smash_to_method_type (struct type *type, struct type *domain,
1103                       struct type *to_type, struct field *args,
1104                       int nargs, int varargs);
1105
1106 extern void smash_to_member_type (struct type *, struct type *, struct type *);
1107
1108 extern struct type *allocate_stub_method (struct type *);
1109
1110 extern char *type_name_no_tag (const struct type *);
1111
1112 extern struct type *lookup_struct_elt_type (struct type *, char *, int);
1113
1114 extern struct type *make_pointer_type (struct type *, struct type **);
1115
1116 extern struct type *lookup_pointer_type (struct type *);
1117
1118 extern struct type *make_function_type (struct type *, struct type **);
1119
1120 extern struct type *lookup_function_type (struct type *);
1121
1122 extern struct type *create_range_type (struct type *, struct type *, int,
1123                                        int);
1124
1125 extern struct type *create_array_type (struct type *, struct type *,
1126                                        struct type *);
1127
1128 extern struct type *create_string_type (struct type *, struct type *);
1129
1130 extern struct type *create_set_type (struct type *, struct type *);
1131
1132 extern struct type *lookup_unsigned_typename (char *);
1133
1134 extern struct type *lookup_signed_typename (char *);
1135
1136 extern struct type *check_typedef (struct type *);
1137
1138 #define CHECK_TYPEDEF(TYPE) (TYPE) = check_typedef (TYPE)
1139
1140 extern void check_stub_method_group (struct type *, int);
1141
1142 extern struct type *lookup_primitive_typename (char *);
1143
1144 extern char *gdb_mangle_name (struct type *, int, int);
1145
1146 extern struct type *builtin_type (char **);
1147
1148 extern struct type *lookup_typename (char *, struct block *, int);
1149
1150 extern struct type *lookup_template_type (char *, struct type *,
1151                                           struct block *);
1152
1153 extern struct type *lookup_fundamental_type (struct objfile *, int);
1154
1155 extern void fill_in_vptr_fieldno (struct type *);
1156
1157 extern int get_destructor_fn_field (struct type *, int *, int *);
1158
1159 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *);
1160
1161 extern int is_ancestor (struct type *, struct type *);
1162
1163 extern int has_vtable (struct type *);
1164
1165 extern struct type *primary_base_class (struct type *);
1166
1167 extern struct type **virtual_base_list (struct type *);
1168
1169 extern int virtual_base_list_length (struct type *);
1170 extern int virtual_base_list_length_skip_primaries (struct type *);
1171
1172 extern int virtual_base_index (struct type *, struct type *);
1173 extern int virtual_base_index_skip_primaries (struct type *, struct type *);
1174
1175
1176 extern int class_index_in_primary_list (struct type *);
1177
1178 extern int count_virtual_fns (struct type *);
1179
1180 /* Constants for HP/Taligent ANSI C++ runtime model */
1181
1182 /* Where virtual function entries begin in the
1183  * virtual table, in the non-RRBC vtable format.
1184  * First 4 are the metavtable pointer, top offset,
1185  * typeinfo pointer, and dup base info pointer */
1186 #define HP_ACC_VFUNC_START        4
1187
1188 /* (Negative) Offset where virtual base offset entries begin
1189  * in the virtual table. Skips over metavtable pointer and
1190  * the self-offset entry.
1191  * NOTE: NEGATE THIS BEFORE USING! The virtual base offsets
1192  * appear before the address point of the vtable (the slot
1193  * pointed to by the object's vtable pointer), i.e. at lower
1194  * addresses than the vtable pointer. */
1195 #define HP_ACC_VBASE_START        2
1196
1197 /* (Positive) Offset where the pointer to the typeinfo
1198  * object is present in the virtual table */
1199 #define HP_ACC_TYPEINFO_OFFSET    2
1200
1201 /* (Positive) Offset where the ``top offset'' entry of
1202  * the virtual table is */
1203 #define HP_ACC_TOP_OFFSET_OFFSET  1
1204
1205 /* Overload resolution */
1206
1207 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1208
1209 /* Badness if parameter list length doesn't match arg list length */
1210 #define LENGTH_MISMATCH_BADNESS      100
1211 /* Dummy badness value for nonexistent parameter positions */
1212 #define TOO_FEW_PARAMS_BADNESS       100
1213 /* Badness if no conversion among types */
1214 #define INCOMPATIBLE_TYPE_BADNESS    100
1215
1216 /* Badness of integral promotion */
1217 #define INTEGER_PROMOTION_BADNESS      1
1218 /* Badness of floating promotion */
1219 #define FLOAT_PROMOTION_BADNESS        1
1220 /* Badness of integral conversion */
1221 #define INTEGER_CONVERSION_BADNESS     2
1222 /* Badness of floating conversion */
1223 #define FLOAT_CONVERSION_BADNESS       2
1224 /* Badness of integer<->floating conversions */
1225 #define INT_FLOAT_CONVERSION_BADNESS   2
1226 /* Badness of converting to a boolean */
1227 #define BOOLEAN_CONVERSION_BADNESS     2
1228 /* Badness of pointer conversion */
1229 #define POINTER_CONVERSION_BADNESS     2
1230 /* Badness of conversion of pointer to void pointer */
1231 #define VOID_PTR_CONVERSION_BADNESS    2
1232 /* Badness of converting derived to base class */
1233 #define BASE_CONVERSION_BADNESS        2
1234 /* Badness of converting from non-reference to reference */
1235 #define REFERENCE_CONVERSION_BADNESS   2
1236
1237 /* Non-standard conversions allowed by the debugger */
1238 /* Converting a pointer to an int is usually OK */
1239 #define NS_POINTER_CONVERSION_BADNESS 10
1240
1241
1242 extern int compare_badness (struct badness_vector *, struct badness_vector *);
1243
1244 extern struct badness_vector *rank_function (struct type **, int,
1245                                              struct type **, int);
1246
1247 extern int rank_one_type (struct type *, struct type *);
1248
1249 extern void recursive_dump_type (struct type *, int);
1250
1251 /* printcmd.c */
1252
1253 extern void print_scalar_formatted (char *, struct type *, int, int,
1254                                     struct ui_file *);
1255
1256 extern int can_dereference (struct type *);
1257
1258 extern int is_integral_type (struct type *);
1259
1260 extern void maintenance_print_type (char *, int);
1261
1262 #endif /* GDBTYPES_H */