gdb/gdbtypes.h

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