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 field;
  30 struct block;
  31
  32 /* Codes for `fundamental types'.  This is a monstrosity based on the
  33    bogus notion that there are certain compiler-independent
  34    `fundamental types'.  None of these is well-defined (how big is
  35    FT_SHORT?  Does it depend on the language?  How does the
  36    language-specific code know which type to correlate to FT_SHORT?)  */
  37
  38 #define FT_VOID                 0
  39 #define FT_BOOLEAN              1
  40 #define FT_CHAR                 2       /* we use this for not-unsigned C/C++ chars */
  41 #define FT_SIGNED_CHAR          3       /* we use this for C++ signed chars */
  42 #define FT_UNSIGNED_CHAR        4       /* we use this for C/C++ unsigned chars */
  43 #define FT_SHORT                5
  44 #define FT_SIGNED_SHORT         6
  45 #define FT_UNSIGNED_SHORT       7
  46 #define FT_INTEGER              8
  47 #define FT_SIGNED_INTEGER       9
  48 #define FT_UNSIGNED_INTEGER     10
  49 #define FT_LONG                 11
  50 #define FT_SIGNED_LONG          12
  51 #define FT_UNSIGNED_LONG        13
  52 #define FT_LONG_LONG            14
  53 #define FT_SIGNED_LONG_LONG     15
  54 #define FT_UNSIGNED_LONG_LONG   16
  55 #define FT_FLOAT                17
  56 #define FT_DBL_PREC_FLOAT       18
  57 #define FT_EXT_PREC_FLOAT       19
  58 #define FT_COMPLEX              20
  59 #define FT_DBL_PREC_COMPLEX     21
  60 #define FT_EXT_PREC_COMPLEX     22
  61 #define FT_STRING               23
  62 #define FT_FIXED_DECIMAL        24
  63 #define FT_FLOAT_DECIMAL        25
  64 #define FT_BYTE                 26
  65 #define FT_UNSIGNED_BYTE        27
  66 #define FT_TEMPLATE_ARG         28
  67
  68 #define FT_NUM_MEMBERS          29      /* Highest FT_* above, plus one. */
  69
  70 /* Some macros for char-based bitfields.  */
  71
  72 #define B_SET(a,x)      ((a)[(x)>>3] |= (1 << ((x)&7)))
  73 #define B_CLR(a,x)      ((a)[(x)>>3] &= ~(1 << ((x)&7)))
  74 #define B_TST(a,x)      ((a)[(x)>>3] & (1 << ((x)&7)))
  75 #define B_TYPE          unsigned char
  76 #define B_BYTES(x)      ( 1 + ((x)>>3) )
  77 #define B_CLRALL(a,x)   memset ((a), 0, B_BYTES(x))
  78
  79 /* Different kinds of data types are distinguished by the `code' field.  */
  80
  81 enum type_code
  82   {
  83     TYPE_CODE_UNDEF,            /* Not used; catches errors */
  84     TYPE_CODE_PTR,              /* Pointer type */
  85     TYPE_CODE_ARRAY,            /* Array type with lower & upper bounds. */
  86     TYPE_CODE_STRUCT,           /* C struct or Pascal record */
  87     TYPE_CODE_UNION,            /* C union or Pascal variant part */
  88     TYPE_CODE_ENUM,             /* Enumeration type */
  89     TYPE_CODE_FUNC,             /* Function type */
  90     TYPE_CODE_INT,              /* Integer type */
  91
  92     /* Floating type.  This is *NOT* a complex type.  Beware, there are parts
  93        of GDB which bogusly assume that TYPE_CODE_FLT can mean complex.  */
  94     TYPE_CODE_FLT,
  95
  96     /* Void type.  The length field specifies the length (probably always
  97        one) which is used in pointer arithmetic involving pointers to
  98        this type, but actually dereferencing such a pointer is invalid;
  99        a void type has no length and no actual representation in memory
 100        or registers.  A pointer to a void type is a generic pointer.  */
 101     TYPE_CODE_VOID,
 102
 103     TYPE_CODE_SET,              /* Pascal sets */
 104     TYPE_CODE_RANGE,            /* Range (integers within spec'd bounds) */
 105
 106     /* A string type which is like an array of character but prints
 107        differently (at least for (the deleted) CHILL).  It does not
 108        contain a length field as Pascal strings (for many Pascals,
 109        anyway) do; if we want to deal with such strings, we should use
 110        a new type code.  */
 111     TYPE_CODE_STRING,
 112
 113     /* String of bits; like TYPE_CODE_SET but prints differently (at
 114        least for (the deleted) CHILL).  */
 115     TYPE_CODE_BITSTRING,
 116
 117     /* Unknown type.  The length field is valid if we were able to
 118        deduce that much about the type, or 0 if we don't even know that.  */
 119     TYPE_CODE_ERROR,
 120
 121     /* C++ */
 122     TYPE_CODE_MEMBER,           /* Member type */
 123     TYPE_CODE_METHOD,           /* Method type */
 124     TYPE_CODE_REF,              /* C++ Reference types */
 125
 126     TYPE_CODE_CHAR,             /* *real* character type */
 127
 128     /* Boolean type.  0 is false, 1 is true, and other values are non-boolean
 129        (e.g. FORTRAN "logical" used as unsigned int).  */
 130     TYPE_CODE_BOOL,
 131
 132     /* Fortran */
 133     TYPE_CODE_COMPLEX,          /* Complex float */
 134
 135     TYPE_CODE_TYPEDEF,
 136     TYPE_CODE_TEMPLATE,         /* C++ template */
 137     TYPE_CODE_TEMPLATE_ARG      /* C++ template arg */
 138
 139   };
 140
 141 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
 142    alias for TYPE_CODE_STRUCT.  This is for DWARF, which has a distinct
 143    "class" attribute.  Perhaps we should actually have a separate TYPE_CODE
 144    so that we can print "class" or "struct" depending on what the debug
 145    info said.  It's not clear we should bother.  */
 146
 147 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
 148
 149 /* Some bits for the type's flags word, and macros to test them. */
 150
 151 /* Unsigned integer type.  If this is not set for a TYPE_CODE_INT, the
 152    type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */
 153
 154 #define TYPE_FLAG_UNSIGNED      (1 << 0)
 155 #define TYPE_UNSIGNED(t)        (TYPE_FLAGS (t) & TYPE_FLAG_UNSIGNED)
 156
 157 /* No sign for this type.  In C++, "char", "signed char", and "unsigned
 158    char" are distinct types; so we need an extra flag to indicate the
 159    absence of a sign! */
 160
 161 #define TYPE_FLAG_NOSIGN        (1 << 1)
 162 #define TYPE_NOSIGN(t)          (TYPE_FLAGS (t) & TYPE_FLAG_NOSIGN)
 163
 164 /* This appears in a type's flags word if it is a stub type (e.g., if
 165    someone referenced a type that wasn't defined in a source file
 166    via (struct sir_not_appearing_in_this_film *)).  */
 167
 168 #define TYPE_FLAG_STUB          (1 << 2)
 169 #define TYPE_STUB(t)            (TYPE_FLAGS (t) & TYPE_FLAG_STUB)
 170
 171 /* The target type of this type is a stub type, and this type needs to
 172    be updated if it gets un-stubbed in check_typedef.
 173    Used for arrays and ranges, in which TYPE_LENGTH of the array/range
 174    gets set based on the TYPE_LENGTH of the target type.
 175    Also, set for TYPE_CODE_TYPEDEF. */
 176
 177 #define TYPE_FLAG_TARGET_STUB   (1 << 3)
 178 #define TYPE_TARGET_STUB(t)     (TYPE_FLAGS (t) & TYPE_FLAG_TARGET_STUB)
 179
 180 /* Static type.  If this is set, the corresponding type had
 181  * a static modifier.
 182  * Note: This may be unnecessary, since static data members
 183  * are indicated by other means (bitpos == -1)
 184  */
 185
 186 #define TYPE_FLAG_STATIC        (1 << 4)
 187 #define TYPE_STATIC(t)          (TYPE_FLAGS (t) & TYPE_FLAG_STATIC)
 188
 189 /* Constant type.  If this is set, the corresponding type has a
 190  * const modifier.
 191  */
 192
 193 #define TYPE_FLAG_CONST         (1 << 5)
 194 #define TYPE_CONST(t)           (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_CONST)
 195
 196 /* Volatile type.  If this is set, the corresponding type has a
 197  * volatile modifier.
 198  */
 199
 200 #define TYPE_FLAG_VOLATILE      (1 << 6)
 201 #define TYPE_VOLATILE(t)        (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_VOLATILE)
 202
 203
 204 /* This is a function type which appears to have a prototype.  We need this
 205    for function calls in order to tell us if it's necessary to coerce the args,
 206    or to just do the standard conversions.  This is used with a short field. */
 207
 208 #define TYPE_FLAG_PROTOTYPED    (1 << 7)
 209 #define TYPE_PROTOTYPED(t)      (TYPE_FLAGS (t) & TYPE_FLAG_PROTOTYPED)
 210
 211 /* This flag is used to indicate that processing for this type
 212    is incomplete.
 213
 214    (Mostly intended for HP platforms, where class methods, for
 215    instance, can be encountered before their classes in the debug
 216    info; the incomplete type has to be marked so that the class and
 217    the method can be assigned correct types.) */
 218
 219 #define TYPE_FLAG_INCOMPLETE    (1 << 8)
 220 #define TYPE_INCOMPLETE(t)      (TYPE_FLAGS (t) & TYPE_FLAG_INCOMPLETE)
 221
 222 /* Instruction-space delimited type.  This is for Harvard architectures
 223    which have separate instruction and data address spaces (and perhaps
 224    others).
 225
 226    GDB usually defines a flat address space that is a superset of the
 227    architecture's two (or more) address spaces, but this is an extension
 228    of the architecture's model.
 229
 230    If TYPE_FLAG_INST is set, an object of the corresponding type
 231    resides in instruction memory, even if its address (in the extended
 232    flat address space) does not reflect this.
 233
 234    Similarly, if TYPE_FLAG_DATA is set, then an object of the
 235    corresponding type resides in the data memory space, even if
 236    this is not indicated by its (flat address space) address.
 237
 238    If neither flag is set, the default space for functions / methods
 239    is instruction space, and for data objects is data memory.  */
 240
 241 #define TYPE_FLAG_CODE_SPACE    (1 << 9)
 242 #define TYPE_CODE_SPACE(t)      (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_CODE_SPACE)
 243
 244 #define TYPE_FLAG_DATA_SPACE    (1 << 10)
 245 #define TYPE_DATA_SPACE(t)      (TYPE_INSTANCE_FLAGS (t) & TYPE_FLAG_DATA_SPACE)
 246
 247 /* FIXME drow/2002-06-03:  Only used for methods, but applies as well
 248    to functions.  */
 249
 250 #define TYPE_FLAG_VARARGS       (1 << 11)
 251 #define TYPE_VARARGS(t)         (TYPE_FLAGS (t) & TYPE_FLAG_VARARGS)
 252
 253 /* Identify a vector type.  Gcc is handling this by adding an extra
 254    attribute to the array type.  We slurp that in as a new flag of a
 255    type.  This is used only in dwarf2read.c.  */
 256 #define TYPE_FLAG_VECTOR        (1 << 12)
 257 #define TYPE_VECTOR(t)          (TYPE_FLAGS (t) & TYPE_FLAG_VECTOR)
 258
 259 /* Address class flags.  Some environments provide for pointers whose
 260    size is different from that of a normal pointer or address types
 261    where the bits are interpreted differently than normal addresses.  The
 262    TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific
 263    ways to represent these different types of address classes.  */
 264 #define TYPE_FLAG_ADDRESS_CLASS_1 (1 << 13)
 265 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
 266                                  & TYPE_FLAG_ADDRESS_CLASS_1)
 267 #define TYPE_FLAG_ADDRESS_CLASS_2 (1 << 14)
 268 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
 269                                  & TYPE_FLAG_ADDRESS_CLASS_2)
 270 #define TYPE_FLAG_ADDRESS_CLASS_ALL (TYPE_FLAG_ADDRESS_CLASS_1 \
 271                                      | TYPE_FLAG_ADDRESS_CLASS_2)
 272 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
 273                                    & TYPE_FLAG_ADDRESS_CLASS_ALL)
 274
 275 /*  Array bound type.  */
 276 enum array_bound_type
 277 {
 278   BOUND_SIMPLE = 0,
 279   BOUND_BY_VALUE_IN_REG,
 280   BOUND_BY_REF_IN_REG,
 281   BOUND_BY_VALUE_ON_STACK,
 282   BOUND_BY_REF_ON_STACK,
 283   BOUND_CANNOT_BE_DETERMINED
 284 };
 285
 286 /* This structure is space-critical.
 287    Its layout has been tweaked to reduce the space used.  */
 288
 289 struct main_type
 290 {
 291   /* Code for kind of type */
 292
 293   ENUM_BITFIELD(type_code) code : 8;
 294
 295   /* Array bounds.  These fields appear at this location because
 296      they pack nicely here.  */
 297
 298   ENUM_BITFIELD(array_bound_type) upper_bound_type : 4;
 299   ENUM_BITFIELD(array_bound_type) lower_bound_type : 4;
 300
 301   /* Name of this type, or NULL if none.
 302
 303      This is used for printing only, except by poorly designed C++ code.
 304      For looking up a name, look for a symbol in the VAR_DOMAIN.  */
 305
 306   char *name;
 307
 308   /* Tag name for this type, or NULL if none.  This means that the
 309      name of the type consists of a keyword followed by the tag name.
 310      Which keyword is determined by the type code ("struct" for
 311      TYPE_CODE_STRUCT, etc.).  As far as I know C/C++ are the only languages
 312      with this feature.
 313
 314      This is used for printing only, except by poorly designed C++ code.
 315      For looking up a name, look for a symbol in the STRUCT_DOMAIN.
 316      One more legitimate use is that if TYPE_FLAG_STUB is set, this is
 317      the name to use to look for definitions in other files.  */
 318
 319   char *tag_name;
 320
 321   /* Every type is now associated with a particular objfile, and the
 322      type is allocated on the type_obstack for that objfile.  One problem
 323      however, is that there are times when gdb allocates new types while
 324      it is not in the process of reading symbols from a particular objfile.
 325      Fortunately, these happen when the type being created is a derived
 326      type of an existing type, such as in lookup_pointer_type().  So
 327      we can just allocate the new type using the same objfile as the
 328      existing type, but to do this we need a backpointer to the objfile
 329      from the existing type.  Yes this is somewhat ugly, but without
 330      major overhaul of the internal type system, it can't be avoided
 331      for now. */
 332
 333   struct objfile *objfile;
 334
 335   /* For a pointer type, describes the type of object pointed to.
 336      For an array type, describes the type of the elements.
 337      For a function or method type, describes the type of the return value.
 338      For a range type, describes the type of the full range.
 339      For a complex type, describes the type of each coordinate.
 340      Unused otherwise.  */
 341
 342   struct type *target_type;
 343
 344   /* Flags about this type.  */
 345
 346   int flags;
 347
 348   /* Number of fields described for this type */
 349
 350   short nfields;
 351
 352   /* Field number of the virtual function table pointer in
 353      VPTR_BASETYPE.  If -1, we were unable to find the virtual
 354      function table pointer in initial symbol reading, and
 355      fill_in_vptr_fieldno should be called to find it if possible.
 356
 357      Unused if this type does not have virtual functions.  */
 358
 359   short vptr_fieldno;
 360
 361   /* For structure and union types, a description of each field.
 362      For set and pascal array types, there is one "field",
 363      whose type is the domain type of the set or array.
 364      For range types, there are two "fields",
 365      the minimum and maximum values (both inclusive).
 366      For enum types, each possible value is described by one "field".
 367      For a function or method type, a "field" for each parameter.
 368      For C++ classes, there is one field for each base class (if it is
 369      a derived class) plus one field for each class data member.  Member
 370      functions are recorded elsewhere.
 371
 372      Using a pointer to a separate array of fields
 373      allows all types to have the same size, which is useful
 374      because we can allocate the space for a type before
 375      we know what to put in it.  */
 376
 377   struct field
 378   {
 379     union field_location
 380     {
 381       /* Position of this field, counting in bits from start of
 382          containing structure.
 383          For BITS_BIG_ENDIAN=1 targets, it is the bit offset to the MSB.
 384          For BITS_BIG_ENDIAN=0 targets, it is the bit offset to the LSB.
 385          For a range bound or enum value, this is the value itself. */
 386
 387       int bitpos;
 388
 389       /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr
 390          is the location (in the target) of the static field.
 391          Otherwise, physname is the mangled label of the static field. */
 392
 393       CORE_ADDR physaddr;
 394       char *physname;
 395     }
 396     loc;
 397
 398     /* For a function or member type, this is 1 if the argument is marked
 399        artificial.  Artificial arguments should not be shown to the
 400        user.  */
 401     unsigned int artificial : 1;
 402
 403     /* This flag is zero for non-static fields, 1 for fields whose location
 404        is specified by the label loc.physname, and 2 for fields whose location
 405        is specified by loc.physaddr.  */
 406
 407     unsigned int static_kind : 2;
 408
 409     /* Size of this field, in bits, or zero if not packed.
 410        For an unpacked field, the field's type's length
 411        says how many bytes the field occupies.  */
 412
 413     unsigned int bitsize : 29;
 414
 415     /* In a struct or union type, type of this field.
 416        In a function or member type, type of this argument.
 417        In an array type, the domain-type of the array.  */
 418
 419     struct type *type;
 420
 421     /* Name of field, value or argument.
 422        NULL for range bounds, array domains, and member function
 423        arguments.  */
 424
 425     char *name;
 426
 427   } *fields;
 428
 429   /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE
 430      is the base class which defined the virtual function table pointer.
 431
 432      For types that are pointer to member types (TYPE_CODE_MEMBER),
 433      VPTR_BASETYPE is the type that this pointer is a member of.
 434
 435      For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
 436      type that contains the method.
 437
 438      Unused otherwise.  */
 439
 440   struct type *vptr_basetype;
 441
 442   /* Slot to point to additional language-specific fields of this type.  */
 443
 444   union type_specific
 445   {
 446     /* CPLUS_STUFF is for TYPE_CODE_STRUCT.  It is initialized to point to
 447        cplus_struct_default, a default static instance of a struct
 448        cplus_struct_type. */
 449
 450     struct cplus_struct_type *cplus_stuff;
 451
 452     /* FLOATFORMAT is for TYPE_CODE_FLT.  It is a pointer to the
 453        floatformat object that describes the floating-point value
 454        that resides within the type.  */
 455
 456     const struct floatformat *floatformat;
 457   } type_specific;
 458 };
 459
 460 /* A ``struct type'' describes a particular instance of a type, with
 461    some particular qualification.  */
 462 struct type
 463 {
 464   /* Type that is a pointer to this type.
 465      NULL if no such pointer-to type is known yet.
 466      The debugger may add the address of such a type
 467      if it has to construct one later.  */
 468
 469   struct type *pointer_type;
 470
 471   /* C++: also need a reference type.  */
 472
 473   struct type *reference_type;
 474
 475   /* Variant chain.  This points to a type that differs from this one only
 476      in qualifiers and length.  Currently, the possible qualifiers are
 477      const, volatile, code-space, data-space, and address class.  The
 478      length may differ only when one of the address class flags are set.
 479      The variants are linked in a circular ring and share MAIN_TYPE.  */
 480   struct type *chain;
 481
 482   /* Flags specific to this instance of the type, indicating where
 483      on the ring we are.  */
 484   int instance_flags;
 485
 486   /* Length of storage for a value of this type.  This is what
 487      sizeof(type) would return; use it for address arithmetic,
 488      memory reads and writes, etc.  This size includes padding.  For
 489      example, an i386 extended-precision floating point value really
 490      only occupies ten bytes, but most ABI's declare its size to be
 491      12 bytes, to preserve alignment.  A `struct type' representing
 492      such a floating-point type would have a `length' value of 12,
 493      even though the last two bytes are unused.
 494
 495      There's a bit of a host/target mess here, if you're concerned
 496      about machines whose bytes aren't eight bits long, or who don't
 497      have byte-addressed memory.  Various places pass this to memcpy
 498      and such, meaning it must be in units of host bytes.  Various
 499      other places expect they can calculate addresses by adding it
 500      and such, meaning it must be in units of target bytes.  For
 501      some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
 502      and TARGET_CHAR_BIT will be (say) 32, this is a problem.
 503
 504      One fix would be to make this field in bits (requiring that it
 505      always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
 506      the other choice would be to make it consistently in units of
 507      HOST_CHAR_BIT.  However, this would still fail to address
 508      machines based on a ternary or decimal representation.  */
 509
 510   unsigned length;
 511
 512   /* Core type, shared by a group of qualified types.  */
 513   struct main_type *main_type;
 514 };
 515
 516 #define NULL_TYPE ((struct type *) 0)
 517
 518 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
 519    nodes.  */
 520
 521 struct cplus_struct_type
 522   {
 523     /* Number of base classes this type derives from.  The baseclasses are
 524        stored in the first N_BASECLASSES fields (i.e. the `fields' field of
 525        the struct type).  I think only the `type' field of such a field has
 526        any meaning.  */
 527
 528     short n_baseclasses;
 529
 530     /* Number of methods with unique names.  All overloaded methods with
 531        the same name count only once. */
 532
 533     short nfn_fields;
 534
 535     /* Number of methods described for this type, not including the
 536        methods that it derives from.  */
 537
 538     short nfn_fields_total;
 539
 540     /* The "declared_type" field contains a code saying how the
 541        user really declared this type, e.g., "class s", "union s",
 542        "struct s".
 543        The 3 above things come out from the C++ compiler looking like classes,
 544        but we keep track of the real declaration so we can give
 545        the correct information on "ptype". (Note: TEMPLATE may not
 546        belong in this list...)  */
 547
 548 #define DECLARED_TYPE_CLASS 0
 549 #define DECLARED_TYPE_UNION 1
 550 #define DECLARED_TYPE_STRUCT 2
 551 #define DECLARED_TYPE_TEMPLATE 3
 552     short declared_type;        /* One of the above codes */
 553
 554     /* For derived classes, the number of base classes is given by n_baseclasses
 555        and virtual_field_bits is a bit vector containing one bit per base class.
 556        If the base class is virtual, the corresponding bit will be set.
 557        I.E, given:
 558
 559        class A{};
 560        class B{};
 561        class C : public B, public virtual A {};
 562
 563        B is a baseclass of C; A is a virtual baseclass for C.
 564        This is a C++ 2.0 language feature. */
 565
 566     B_TYPE *virtual_field_bits;
 567
 568     /* For classes with private fields, the number of fields is given by
 569        nfields and private_field_bits is a bit vector containing one bit
 570        per field.
 571        If the field is private, the corresponding bit will be set. */
 572
 573     B_TYPE *private_field_bits;
 574
 575     /* For classes with protected fields, the number of fields is given by
 576        nfields and protected_field_bits is a bit vector containing one bit
 577        per field.
 578        If the field is private, the corresponding bit will be set. */
 579
 580     B_TYPE *protected_field_bits;
 581
 582     /* for classes with fields to be ignored, either this is optimized out
 583        or this field has length 0 */
 584
 585     B_TYPE *ignore_field_bits;
 586
 587     /* For classes, structures, and unions, a description of each field,
 588        which consists of an overloaded name, followed by the types of
 589        arguments that the method expects, and then the name after it
 590        has been renamed to make it distinct.
 591
 592        fn_fieldlists points to an array of nfn_fields of these. */
 593
 594     struct fn_fieldlist
 595       {
 596
 597         /* The overloaded name.  */
 598
 599         char *name;
 600
 601         /* The number of methods with this name.  */
 602
 603         int length;
 604
 605         /* The list of methods.  */
 606
 607         struct fn_field
 608           {
 609
 610             /* If is_stub is clear, this is the mangled name which we can
 611                look up to find the address of the method (FIXME: it would
 612                be cleaner to have a pointer to the struct symbol here
 613                instead).  */
 614
 615             /* If is_stub is set, this is the portion of the mangled
 616                name which specifies the arguments.  For example, "ii",
 617                if there are two int arguments, or "" if there are no
 618                arguments.  See gdb_mangle_name for the conversion from this
 619                format to the one used if is_stub is clear.  */
 620
 621             char *physname;
 622
 623             /* The function type for the method.
 624                (This comment used to say "The return value of the method",
 625                but that's wrong. The function type
 626                is expected here, i.e. something with TYPE_CODE_FUNC,
 627                and *not* the return-value type). */
 628
 629             struct type *type;
 630
 631             /* For virtual functions.
 632                First baseclass that defines this virtual function.   */
 633
 634             struct type *fcontext;
 635
 636             /* Attributes. */
 637
 638             unsigned int is_const:1;
 639             unsigned int is_volatile:1;
 640             unsigned int is_private:1;
 641             unsigned int is_protected:1;
 642             unsigned int is_public:1;
 643             unsigned int is_abstract:1;
 644             unsigned int is_static:1;
 645             unsigned int is_final:1;
 646             unsigned int is_synchronized:1;
 647             unsigned int is_native:1;
 648             unsigned int is_artificial:1;
 649
 650             /* A stub method only has some fields valid (but they are enough
 651                to reconstruct the rest of the fields).  */
 652             unsigned int is_stub:1;
 653
 654             /* C++ method that is inlined */
 655             unsigned int is_inlined:1;
 656
 657             /* Unused.  */
 658             unsigned int dummy:3;
 659
 660             /* Index into that baseclass's virtual function table,
 661                minus 2; else if static: VOFFSET_STATIC; else: 0.  */
 662
 663             unsigned int voffset:16;
 664
 665 #define VOFFSET_STATIC 1
 666
 667           }
 668          *fn_fields;
 669
 670       }
 671      *fn_fieldlists;
 672
 673     /* If this "struct type" describes a template, then it
 674      * has arguments. "template_args" points to an array of
 675      * template arg descriptors, of length "ntemplate_args".
 676      * The only real information in each of these template arg descriptors
 677      * is a name. "type" will typically just point to a "struct type" with
 678      * the placeholder TYPE_CODE_TEMPLATE_ARG type.
 679      */
 680     short ntemplate_args;
 681     struct template_arg
 682       {
 683         char *name;
 684         struct type *type;
 685       }
 686      *template_args;
 687
 688     /* If this "struct type" describes a template, it has a list
 689      * of instantiations. "instantiations" is a pointer to an array
 690      * of type's, one representing each instantiation. There
 691      * are "ninstantiations" elements in this array.
 692      */
 693     short ninstantiations;
 694     struct type **instantiations;
 695
 696     /* The following points to information relevant to the runtime model
 697      * of the compiler.
 698      * Currently being used only for HP's ANSI C++ compiler.
 699      * (This type may have to be changed/enhanced for other compilers.)
 700      *
 701      * RUNTIME_PTR is NULL if there is no runtime information (currently
 702      * this means the type was not compiled by HP aCC).
 703      *
 704      * Fields in structure pointed to:
 705      * ->HAS_VTABLE : 0 => no virtual table, 1 => vtable present
 706      *
 707      * ->PRIMARY_BASE points to the first non-virtual base class that has
 708      * a virtual table.
 709      *
 710      * ->VIRTUAL_BASE_LIST points to a list of struct type * pointers that
 711      * point to the type information for all virtual bases among this type's
 712      * ancestors.
 713      */
 714     struct runtime_info
 715       {
 716         short has_vtable;
 717         struct type *primary_base;
 718         struct type **virtual_base_list;
 719       }
 720      *runtime_ptr;
 721
 722     /* Pointer to information about enclosing scope, if this is a
 723      * local type.  If it is not a local type, this is NULL
 724      */
 725     struct local_type_info
 726       {
 727         char *file;
 728         int line;
 729       }
 730      *localtype_ptr;
 731   };
 732
 733 /* Struct used in computing virtual base list */
 734 struct vbase
 735   {
 736     struct type *vbasetype;     /* pointer to virtual base */
 737     struct vbase *next;         /* next in chain */
 738   };
 739
 740 /* Struct used for ranking a function for overload resolution */
 741 struct badness_vector
 742   {
 743     int length;
 744     int *rank;
 745   };
 746
 747 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
 748    this shared static structure. */
 749
 750 extern const struct cplus_struct_type cplus_struct_default;
 751
 752 extern void allocate_cplus_struct_type (struct type *);
 753
 754 #define INIT_CPLUS_SPECIFIC(type) \
 755   (TYPE_CPLUS_SPECIFIC(type)=(struct cplus_struct_type*)&cplus_struct_default)
 756 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
 757 #define HAVE_CPLUS_STRUCT(type) \
 758   (TYPE_CPLUS_SPECIFIC(type) != &cplus_struct_default)
 759
 760 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
 761 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
 762 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
 763 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
 764 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
 765 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
 766 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
 767 #define TYPE_CHAIN(thistype) (thistype)->chain
 768 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
 769    But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
 770    so you only have to call check_typedef once.  Since allocate_value
 771    calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe.  */
 772 #define TYPE_LENGTH(thistype) (thistype)->length
 773 #define TYPE_OBJFILE(thistype) TYPE_MAIN_TYPE(thistype)->objfile
 774 #define TYPE_FLAGS(thistype) TYPE_MAIN_TYPE(thistype)->flags
 775 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
 776    type, you need to do TYPE_CODE (check_type (this_type)). */
 777 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
 778 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
 779 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->fields
 780 #define TYPE_TEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->template_args
 781 #define TYPE_INSTANTIATIONS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->instantiations
 782
 783 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
 784 #define TYPE_LOW_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 0)
 785 #define TYPE_HIGH_BOUND(range_type) TYPE_FIELD_BITPOS (range_type, 1)
 786
 787 /* Moto-specific stuff for FORTRAN arrays */
 788
 789 #define TYPE_ARRAY_UPPER_BOUND_TYPE(thistype) \
 790         TYPE_MAIN_TYPE(thistype)->upper_bound_type
 791 #define TYPE_ARRAY_LOWER_BOUND_TYPE(thistype) \
 792         TYPE_MAIN_TYPE(thistype)->lower_bound_type
 793
 794 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
 795    (TYPE_FIELD_BITPOS((TYPE_FIELD_TYPE((arraytype),0)),1))
 796
 797 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
 798    (TYPE_FIELD_BITPOS((TYPE_FIELD_TYPE((arraytype),0)),0))
 799
 800 /* C++ */
 801
 802 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
 803 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
 804 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
 805 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
 806 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
 807 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
 808 #define TYPE_NTEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->ntemplate_args
 809 #define TYPE_NINSTANTIATIONS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->ninstantiations
 810 #define TYPE_DECLARED_TYPE(thistype) TYPE_CPLUS_SPECIFIC(thistype)->declared_type
 811 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
 812 #define TYPE_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
 813 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
 814 #define TYPE_BASECLASS(thistype,index) TYPE_MAIN_TYPE(thistype)->fields[index].type
 815 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
 816 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_MAIN_TYPE(thistype)->fields[index].name
 817 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
 818 #define BASETYPE_VIA_PUBLIC(thistype, index) \
 819   ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
 820
 821 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
 822   (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
 823     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
 824
 825 #define FIELD_TYPE(thisfld) ((thisfld).type)
 826 #define FIELD_NAME(thisfld) ((thisfld).name)
 827 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
 828 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
 829 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
 830 #define FIELD_STATIC_KIND(thisfld) ((thisfld).static_kind)
 831 #define FIELD_PHYSNAME(thisfld) ((thisfld).loc.physname)
 832 #define FIELD_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
 833 #define SET_FIELD_PHYSNAME(thisfld, name) \
 834   ((thisfld).static_kind = 1, FIELD_PHYSNAME(thisfld) = (name))
 835 #define SET_FIELD_PHYSADDR(thisfld, name) \
 836   ((thisfld).static_kind = 2, FIELD_PHYSADDR(thisfld) = (name))
 837 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->fields[n]
 838 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
 839 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
 840 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS(TYPE_FIELD(thistype,n))
 841 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
 842 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
 843 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
 844 #define TYPE_TEMPLATE_ARG(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->template_args[n]
 845 #define TYPE_INSTANTIATION(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->instantiations[n]
 846
 847 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
 848   TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
 849 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
 850   TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
 851 #define TYPE_FIELD_IGNORE_BITS(thistype) \
 852   TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
 853 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
 854   TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
 855 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
 856   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
 857 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
 858   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
 859 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
 860   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
 861 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
 862   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
 863 #define TYPE_FIELD_PRIVATE(thistype, n) \
 864   (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
 865     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
 866 #define TYPE_FIELD_PROTECTED(thistype, n) \
 867   (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
 868     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
 869 #define TYPE_FIELD_IGNORE(thistype, n) \
 870   (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
 871     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
 872 #define TYPE_FIELD_VIRTUAL(thistype, n) \
 873   (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
 874     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
 875
 876 #define TYPE_FIELD_STATIC(thistype, n) (TYPE_MAIN_TYPE (thistype)->fields[n].static_kind != 0)
 877 #define TYPE_FIELD_STATIC_KIND(thistype, n) TYPE_MAIN_TYPE (thistype)->fields[n].static_kind
 878 #define TYPE_FIELD_STATIC_HAS_ADDR(thistype, n) (TYPE_MAIN_TYPE (thistype)->fields[n].static_kind == 2)
 879 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_PHYSNAME(TYPE_FIELD(thistype, n))
 880 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_PHYSADDR(TYPE_FIELD(thistype, n))
 881
 882 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
 883 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
 884 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
 885 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
 886 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
 887
 888 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
 889 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
 890 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
 891 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
 892 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
 893 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
 894 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
 895 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
 896 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
 897 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
 898 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
 899 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
 900 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
 901 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
 902 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
 903 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
 904 #define TYPE_FN_FIELD_INLINED(thisfn, n) ((thisfn)[n].is_inlined)
 905 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
 906 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
 907 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
 908 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
 909
 910 #define TYPE_RUNTIME_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->runtime_ptr)
 911 #define TYPE_VTABLE(thistype) (TYPE_RUNTIME_PTR(thistype)->has_vtable)
 912 #define TYPE_HAS_VTABLE(thistype) (TYPE_RUNTIME_PTR(thistype) && TYPE_VTABLE(thistype))
 913 #define TYPE_PRIMARY_BASE(thistype) (TYPE_RUNTIME_PTR(thistype)->primary_base)
 914 #define TYPE_VIRTUAL_BASE_LIST(thistype) (TYPE_RUNTIME_PTR(thistype)->virtual_base_list)
 915
 916 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
 917 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
 918 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
 919
 920 #define TYPE_IS_OPAQUE(thistype) (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) ||        \
 921                                    (TYPE_CODE (thistype) == TYPE_CODE_UNION))        && \
 922                                   (TYPE_NFIELDS (thistype) == 0)                     && \
 923                                   (TYPE_CPLUS_SPECIFIC (thistype) && (TYPE_NFN_FIELDS (thistype) == 0)))
 924
 925
 926
 927 /* Implicit sizes */
 928 extern struct type *builtin_type_void;
 929 extern struct type *builtin_type_char;
 930 extern struct type *builtin_type_short;
 931 extern struct type *builtin_type_int;
 932 extern struct type *builtin_type_long;
 933 extern struct type *builtin_type_signed_char;
 934 extern struct type *builtin_type_unsigned_char;
 935 extern struct type *builtin_type_unsigned_short;
 936 extern struct type *builtin_type_unsigned_int;
 937 extern struct type *builtin_type_unsigned_long;
 938 extern struct type *builtin_type_float;
 939 extern struct type *builtin_type_double;
 940 extern struct type *builtin_type_long_double;
 941 extern struct type *builtin_type_complex;
 942 extern struct type *builtin_type_double_complex;
 943 extern struct type *builtin_type_string;
 944 extern struct type *builtin_type_bool;
 945
 946 /* Address/pointer types: */
 947 /* (C) Language `pointer to data' type.  Some target platforms use an
 948    implicitly {sign,zero} -extended 32 bit C language pointer on a 64
 949    bit ISA.  */
 950 extern struct type *builtin_type_void_data_ptr;
 951
 952 /* (C) Language `pointer to function returning void' type.  Since
 953    ANSI, C standards have explicitly said that pointers to functions
 954    and pointers to data are not interconvertible --- that is, you
 955    can't cast a function pointer to void * and back, and expect to get
 956    the same value.  However, all function pointer types are
 957    interconvertible, so void (*) () can server as a generic function
 958    pointer.  */
 959 extern struct type *builtin_type_void_func_ptr;
 960
 961 /* The target CPU's address type.  This is the ISA address size. */
 962 extern struct type *builtin_type_CORE_ADDR;
 963 /* The symbol table address type.  Some object file formats have a 32
 964    bit address type even though the TARGET has a 64 bit pointer type
 965    (cf MIPS). */
 966 extern struct type *builtin_type_bfd_vma;
 967
 968 /* Explicit sizes - see C9X <intypes.h> for naming scheme.  The "int0"
 969    is for when an architecture needs to describe a register that has
 970    no size.  */
 971 extern struct type *builtin_type_int0;
 972 extern struct type *builtin_type_int8;
 973 extern struct type *builtin_type_uint8;
 974 extern struct type *builtin_type_int16;
 975 extern struct type *builtin_type_uint16;
 976 extern struct type *builtin_type_int32;
 977 extern struct type *builtin_type_uint32;
 978 extern struct type *builtin_type_int64;
 979 extern struct type *builtin_type_uint64;
 980 extern struct type *builtin_type_int128;
 981 extern struct type *builtin_type_uint128;
 982
 983 /* SIMD types.  We inherit these names from GCC.  */
 984 extern struct type *builtin_type_v4sf;
 985 extern struct type *builtin_type_v4si;
 986 extern struct type *builtin_type_v16qi;
 987 extern struct type *builtin_type_v8qi;
 988 extern struct type *builtin_type_v8hi;
 989 extern struct type *builtin_type_v4hi;
 990 extern struct type *builtin_type_v2si;
 991
 992 /* Type for 64 bit vectors. */
 993 extern struct type *builtin_type_vec64;
 994 extern struct type *builtin_type_vec64i;
 995
 996 /* Type for 128 bit vectors. */
 997 extern struct type *builtin_type_vec128;
 998 extern struct type *builtin_type_vec128i;
 999
1000 /* Explicit floating-point formats.  See "floatformat.h".  */
1001 extern struct type *builtin_type_ieee_single_big;
1002 extern struct type *builtin_type_ieee_single_little;
1003 extern struct type *builtin_type_ieee_double_big;
1004 extern struct type *builtin_type_ieee_double_little;
1005 extern struct type *builtin_type_ieee_double_littlebyte_bigword;
1006 extern struct type *builtin_type_i387_ext;
1007 extern struct type *builtin_type_m68881_ext;
1008 extern struct type *builtin_type_i960_ext;
1009 extern struct type *builtin_type_m88110_ext;
1010 extern struct type *builtin_type_m88110_harris_ext;
1011 extern struct type *builtin_type_arm_ext_big;
1012 extern struct type *builtin_type_arm_ext_littlebyte_bigword;
1013 extern struct type *builtin_type_ia64_spill_big;
1014 extern struct type *builtin_type_ia64_spill_little;
1015 extern struct type *builtin_type_ia64_quad_big;
1016 extern struct type *builtin_type_ia64_quad_little;
1017
1018 /* We use this for the '/c' print format, because builtin_type_char is
1019    just a one-byte integral type, which languages less laid back than
1020    C will print as ... well, a one-byte integral type.  */
1021 extern struct type *builtin_type_true_char;
1022
1023 /* This type represents a type that was unrecognized in symbol
1024    read-in.  */
1025
1026 extern struct type *builtin_type_error;
1027
1028 extern struct type *builtin_type_long_long;
1029 extern struct type *builtin_type_unsigned_long_long;
1030
1031 /* Modula-2 types */
1032
1033 extern struct type *builtin_type_m2_char;
1034 extern struct type *builtin_type_m2_int;
1035 extern struct type *builtin_type_m2_card;
1036 extern struct type *builtin_type_m2_real;
1037 extern struct type *builtin_type_m2_bool;
1038
1039 /* Fortran (F77) types */
1040
1041 extern struct type *builtin_type_f_character;
1042 extern struct type *builtin_type_f_integer;
1043 extern struct type *builtin_type_f_integer_s2;
1044 extern struct type *builtin_type_f_logical;
1045 extern struct type *builtin_type_f_logical_s1;
1046 extern struct type *builtin_type_f_logical_s2;
1047 extern struct type *builtin_type_f_real;
1048 extern struct type *builtin_type_f_real_s8;
1049 extern struct type *builtin_type_f_real_s16;
1050 extern struct type *builtin_type_f_complex_s8;
1051 extern struct type *builtin_type_f_complex_s16;
1052 extern struct type *builtin_type_f_complex_s32;
1053 extern struct type *builtin_type_f_void;
1054
1055 /* RTTI for C++ */
1056 /* extern struct type *builtin_type_cxx_typeinfo; */
1057
1058 /* Maximum and minimum values of built-in types */
1059
1060 #define MAX_OF_TYPE(t)  \
1061    (TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
1062     : MAX_OF_SIZE(TYPE_LENGTH(t)))
1063
1064 #define MIN_OF_TYPE(t)  \
1065    (TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
1066     : MIN_OF_SIZE(TYPE_LENGTH(t)))
1067
1068 /* Allocate space for storing data associated with a particular type.
1069    We ensure that the space is allocated using the same mechanism that
1070    was used to allocate the space for the type structure itself.  I.E.
1071    if the type is on an objfile's type_obstack, then the space for data
1072    associated with that type will also be allocated on the type_obstack.
1073    If the type is not associated with any particular objfile (such as
1074    builtin types), then the data space will be allocated with xmalloc,
1075    the same as for the type structure. */
1076
1077 #define TYPE_ALLOC(t,size)  \
1078    (TYPE_OBJFILE (t) != NULL  \
1079     ? obstack_alloc (&TYPE_OBJFILE (t) -> type_obstack, size) \
1080     : xmalloc (size))
1081
1082 extern struct type *alloc_type (struct objfile *);
1083
1084 extern struct type *init_type (enum type_code, int, int, char *,
1085                                struct objfile *);
1086
1087 /* Helper functions to construct a struct or record type.  An
1088    initially empty type is created using init_composite_type().
1089    Fields are then added using append_struct_type_field().  A union
1090    type has its size set to the largest field.  A struct type has each
1091    field packed against the previous.  */
1092
1093 extern struct type *init_composite_type (char *name, enum type_code code);
1094 extern void append_composite_type_field (struct type *t, char *name,
1095                                          struct type *field);
1096
1097 extern struct type *lookup_reference_type (struct type *);
1098
1099 extern struct type *make_reference_type (struct type *, struct type **);
1100
1101 extern struct type *make_cv_type (int, int, struct type *, struct type **);
1102
1103 extern void replace_type (struct type *, struct type *);
1104
1105 extern int address_space_name_to_int (char *);
1106
1107 extern const char *address_space_int_to_name (int);
1108
1109 extern struct type *make_type_with_address_space (struct type *type,
1110                                                   int space_identifier);
1111
1112 extern struct type *lookup_member_type (struct type *, struct type *);
1113
1114 extern void
1115 smash_to_method_type (struct type *type, struct type *domain,
1116                       struct type *to_type, struct field *args,
1117                       int nargs, int varargs);
1118
1119 extern void smash_to_member_type (struct type *, struct type *, struct type *);
1120
1121 extern struct type *allocate_stub_method (struct type *);
1122
1123 extern char *type_name_no_tag (const struct type *);
1124
1125 extern struct type *lookup_struct_elt_type (struct type *, char *, int);
1126
1127 extern struct type *make_pointer_type (struct type *, struct type **);
1128
1129 extern struct type *lookup_pointer_type (struct type *);
1130
1131 extern struct type *make_function_type (struct type *, struct type **);
1132
1133 extern struct type *lookup_function_type (struct type *);
1134
1135 extern struct type *create_range_type (struct type *, struct type *, int,
1136                                        int);
1137
1138 extern struct type *create_array_type (struct type *, struct type *,
1139                                        struct type *);
1140
1141 extern struct type *create_string_type (struct type *, struct type *);
1142
1143 extern struct type *create_set_type (struct type *, struct type *);
1144
1145 extern struct type *lookup_unsigned_typename (char *);
1146
1147 extern struct type *lookup_signed_typename (char *);
1148
1149 extern struct type *check_typedef (struct type *);
1150
1151 #define CHECK_TYPEDEF(TYPE) (TYPE) = check_typedef (TYPE)
1152
1153 extern void check_stub_method_group (struct type *, int);
1154
1155 extern struct type *lookup_primitive_typename (char *);
1156
1157 extern char *gdb_mangle_name (struct type *, int, int);
1158
1159 extern struct type *builtin_type (char **);
1160
1161 extern struct type *lookup_typename (char *, struct block *, int);
1162
1163 extern struct type *lookup_template_type (char *, struct type *,
1164                                           struct block *);
1165
1166 extern struct type *lookup_fundamental_type (struct objfile *, int);
1167
1168 extern void fill_in_vptr_fieldno (struct type *);
1169
1170 extern int get_destructor_fn_field (struct type *, int *, int *);
1171
1172 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *);
1173
1174 extern int is_ancestor (struct type *, struct type *);
1175
1176 extern int has_vtable (struct type *);
1177
1178 extern struct type *primary_base_class (struct type *);
1179
1180 extern struct type **virtual_base_list (struct type *);
1181
1182 extern int virtual_base_list_length (struct type *);
1183 extern int virtual_base_list_length_skip_primaries (struct type *);
1184
1185 extern int virtual_base_index (struct type *, struct type *);
1186 extern int virtual_base_index_skip_primaries (struct type *, struct type *);
1187
1188
1189 extern int class_index_in_primary_list (struct type *);
1190
1191 extern int count_virtual_fns (struct type *);
1192
1193 /* Constants for HP/Taligent ANSI C++ runtime model */
1194
1195 /* Where virtual function entries begin in the
1196  * virtual table, in the non-RRBC vtable format.
1197  * First 4 are the metavtable pointer, top offset,
1198  * typeinfo pointer, and dup base info pointer */
1199 #define HP_ACC_VFUNC_START        4
1200
1201 /* (Negative) Offset where virtual base offset entries begin
1202  * in the virtual table. Skips over metavtable pointer and
1203  * the self-offset entry.
1204  * NOTE: NEGATE THIS BEFORE USING! The virtual base offsets
1205  * appear before the address point of the vtable (the slot
1206  * pointed to by the object's vtable pointer), i.e. at lower
1207  * addresses than the vtable pointer. */
1208 #define HP_ACC_VBASE_START        2
1209
1210 /* (Positive) Offset where the pointer to the typeinfo
1211  * object is present in the virtual table */
1212 #define HP_ACC_TYPEINFO_OFFSET    2
1213
1214 /* (Positive) Offset where the ``top offset'' entry of
1215  * the virtual table is */
1216 #define HP_ACC_TOP_OFFSET_OFFSET  1
1217
1218 /* Overload resolution */
1219
1220 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1221
1222 /* Badness if parameter list length doesn't match arg list length */
1223 #define LENGTH_MISMATCH_BADNESS      100
1224 /* Dummy badness value for nonexistent parameter positions */
1225 #define TOO_FEW_PARAMS_BADNESS       100
1226 /* Badness if no conversion among types */
1227 #define INCOMPATIBLE_TYPE_BADNESS    100
1228
1229 /* Badness of integral promotion */
1230 #define INTEGER_PROMOTION_BADNESS      1
1231 /* Badness of floating promotion */
1232 #define FLOAT_PROMOTION_BADNESS        1
1233 /* Badness of integral conversion */
1234 #define INTEGER_CONVERSION_BADNESS     2
1235 /* Badness of floating conversion */
1236 #define FLOAT_CONVERSION_BADNESS       2
1237 /* Badness of integer<->floating conversions */
1238 #define INT_FLOAT_CONVERSION_BADNESS   2
1239 /* Badness of converting to a boolean */
1240 #define BOOLEAN_CONVERSION_BADNESS     2
1241 /* Badness of pointer conversion */
1242 #define POINTER_CONVERSION_BADNESS     2
1243 /* Badness of conversion of pointer to void pointer */
1244 #define VOID_PTR_CONVERSION_BADNESS    2
1245 /* Badness of converting derived to base class */
1246 #define BASE_CONVERSION_BADNESS        2
1247 /* Badness of converting from non-reference to reference */
1248 #define REFERENCE_CONVERSION_BADNESS   2
1249
1250 /* Non-standard conversions allowed by the debugger */
1251 /* Converting a pointer to an int is usually OK */
1252 #define NS_POINTER_CONVERSION_BADNESS 10
1253
1254
1255 extern int compare_badness (struct badness_vector *, struct badness_vector *);
1256
1257 extern struct badness_vector *rank_function (struct type **, int,
1258                                              struct type **, int);
1259
1260 extern int rank_one_type (struct type *, struct type *);
1261
1262 extern void recursive_dump_type (struct type *, int);
1263
1264 /* printcmd.c */
1265
1266 extern void print_scalar_formatted (void *, struct type *, int, int,
1267                                     struct ui_file *);
1268
1269 extern int can_dereference (struct type *);
1270
1271 extern int is_integral_type (struct type *);
1272
1273 extern void maintenance_print_type (char *, int);
1274
1275 #endif /* GDBTYPES_H */