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