gdb/gdbtypes.h - gdb

Data types defined

Macros defined

Source code


  2. /* Internal type definitions for GDB.

  4.    Copyright (C) 1992-2015 Free Software Foundation, Inc.

  6.    Contributed by Cygnus Support, using pieces from other GDB modules.

  8.    This file is part of GDB.

  10.    This program is free software; you can redistribute it and/or modify
  11.    it under the terms of the GNU General Public License as published by
  12.    the Free Software Foundation; either version 3 of the License, or
  13.    (at your option) any later version.

  15.    This program is distributed in the hope that it will be useful,
  16.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18.    GNU General Public License for more details.

  20.    You should have received a copy of the GNU General Public License
  21.    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

  23. #if !defined (GDBTYPES_H)
  24. ‌#define GDBTYPES_H 1

  26. /* * \page gdbtypes GDB Types

  28.    GDB represents all the different kinds of types in programming
  29.    languages using a common representation defined in gdbtypes.h.

  31.    The main data structure is main_type; it consists of a code (such
  32.    as #TYPE_CODE_ENUM for enumeration types), a number of
  33.    generally-useful fields such as the printable name, and finally a
  34.    field main_type::type_specific that is a union of info specific to
  35.    particular languages or other special cases (such as calling
  36.    convention).

  38.    The available type codes are defined in enum #type_code.  The enum
  39.    includes codes both for types that are common across a variety
  40.    of languages, and for types that are language-specific.

  42.    Most accesses to type fields go through macros such as
  43.    #TYPE_CODE(thistype) and #TYPE_FN_FIELD_CONST(thisfn, n).  These are
  44.    written such that they can be used as both rvalues and lvalues.
  45. */

  47. #include "hashtab.h"

  49. /* Forward declarations for prototypes.  */
  50. struct field;
  51. struct block;
  52. struct value_print_options;
  53. struct language_defn;

  55. /* These declarations are DWARF-specific as some of the gdbtypes.h data types
  56.    are already DWARF-specific.  */

  58. /* * Offset relative to the start of its containing CU (compilation
  59.    unit).  */
  60. typedef struct
  61. {
  62.   unsigned int cu_off;
  63. ‌} cu_offset;

  65. /* * Offset relative to the start of its .debug_info or .debug_types
  66.    section.  */

  68. typedef struct
  69. {
  70.   unsigned int sect_off;
  71. ‌} sect_offset;

  73. /* Some macros for char-based bitfields.  */

  75. ‌#define B_SET(a,x)        ((a)[(x)>>3] |= (1 << ((x)&7)))
  76. ‌#define B_CLR(a,x)        ((a)[(x)>>3] &= ~(1 << ((x)&7)))
  77. ‌#define B_TST(a,x)        ((a)[(x)>>3] & (1 << ((x)&7)))
  78. ‌#define B_TYPE                unsigned char
  79. ‌#define        B_BYTES(x)        ( 1 + ((x)>>3) )
  80. ‌#define        B_CLRALL(a,x)        memset ((a), 0, B_BYTES(x))

  82. /* * Different kinds of data types are distinguished by the `code'
  83.    field.  */

  85. ‌enum type_code
  86.   {
  87.     TYPE_CODE_BITSTRING = -1,        /**< Deprecated  */
  88.     TYPE_CODE_UNDEF = 0,        /**< Not used; catches errors */
  89.     TYPE_CODE_PTR,                /**< Pointer type */

  91.     /* * Array type with lower & upper bounds.

  93.        Regardless of the language, GDB represents multidimensional
  94.        array types the way C does: as arrays of arrays.  So an
  95.        instance of a GDB array type T can always be seen as a series
  96.        of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
  97.        memory.

  99.        Row-major languages like C lay out multi-dimensional arrays so
  100.        that incrementing the rightmost index in a subscripting
  101.        expression results in the smallest change in the address of the
  102.        element referred to.  Column-major languages like Fortran lay
  103.        them out so that incrementing the leftmost index results in the
  104.        smallest change.

  106.        This means that, in column-major languages, working our way
  107.        from type to target type corresponds to working through indices
  108.        from right to left, not left to right.  */
  109.     TYPE_CODE_ARRAY,

  111.     TYPE_CODE_STRUCT,                /**< C struct or Pascal record */
  112.     TYPE_CODE_UNION,                /**< C union or Pascal variant part */
  113.     TYPE_CODE_ENUM,                /**< Enumeration type */
  114.     TYPE_CODE_FLAGS,                /**< Bit flags type */
  115.     TYPE_CODE_FUNC,                /**< Function type */
  116.     TYPE_CODE_INT,                /**< Integer type */

  118.     /* * Floating type.  This is *NOT* a complex type.  Beware, there
  119.        are parts of GDB which bogusly assume that TYPE_CODE_FLT can
  120.        mean complex.  */
  121.     TYPE_CODE_FLT,

  123.     /* * Void type.  The length field specifies the length (probably
  124.        always one) which is used in pointer arithmetic involving
  125.        pointers to this type, but actually dereferencing such a
  126.        pointer is invalid; a void type has no length and no actual
  127.        representation in memory or registers.  A pointer to a void
  128.        type is a generic pointer.  */
  129.     TYPE_CODE_VOID,

  131.     TYPE_CODE_SET,                /**< Pascal sets */
  132.     TYPE_CODE_RANGE,                /**< Range (integers within spec'd bounds).  */

  134.     /* * A string type which is like an array of character but prints
  135.        differently.  It does not contain a length field as Pascal
  136.        strings (for many Pascals, anyway) do; if we want to deal with
  137.        such strings, we should use a new type code.  */
  138.     TYPE_CODE_STRING,

  140.     /* * Unknown type.  The length field is valid if we were able to
  141.        deduce that much about the type, or 0 if we don't even know
  142.        that.  */
  143.     TYPE_CODE_ERROR,

  145.     /* C++ */
  146.     TYPE_CODE_METHOD,                /**< Method type */

  148.     /* * Pointer-to-member-function type.  This describes how to access a
  149.        particular member function of a class (possibly a virtual
  150.        member function).  The representation may vary between different
  151.        C++ ABIs.  */
  152.     TYPE_CODE_METHODPTR,

  154.     /* * Pointer-to-member type.  This is the offset within a class to
  155.        some particular data member.  The only currently supported
  156.        representation uses an unbiased offset, with -1 representing
  157.        NULL; this is used by the Itanium C++ ABI (used by GCC on all
  158.        platforms).  */
  159.     TYPE_CODE_MEMBERPTR,

  161.     TYPE_CODE_REF,                /**< C++ Reference types */

  163.     TYPE_CODE_CHAR,                /**< *real* character type */

  165.     /* * Boolean type.  0 is false, 1 is true, and other values are
  166.        non-boolean (e.g. FORTRAN "logical" used as unsigned int).  */
  167.     TYPE_CODE_BOOL,

  169.     /* Fortran */
  170.     TYPE_CODE_COMPLEX,                /**< Complex float */

  172.     TYPE_CODE_TYPEDEF,

  174.     TYPE_CODE_NAMESPACE,        /**< C++ namespace.  */

  176.     TYPE_CODE_DECFLOAT,                /**< Decimal floating point.  */

  178.     TYPE_CODE_MODULE,                /**< Fortran module.  */

  180.     /* * Internal function type.  */
  181.     TYPE_CODE_INTERNAL_FUNCTION,

  183.     /* * Methods implemented in extension languages.  */
  184.     TYPE_CODE_XMETHOD
  185.   };

  187. /* * Some constants representing each bit field in the main_type.  See
  188.    the bit-field-specific macros, below, for documentation of each
  189.    constant in this enum.  These enum values are only used with
  190.    init_type.  Note that the values are chosen not to conflict with
  191.    type_instance_flag_value; this lets init_type error-check its
  192.    input.  */

  194. ‌enum type_flag_value
  195. {
  196.   TYPE_FLAG_UNSIGNED = (1 << 8),
  197.   TYPE_FLAG_NOSIGN = (1 << 9),
  198.   TYPE_FLAG_STUB = (1 << 10),
  199.   TYPE_FLAG_TARGET_STUB = (1 << 11),
  200.   TYPE_FLAG_STATIC = (1 << 12),
  201.   TYPE_FLAG_PROTOTYPED = (1 << 13),
  202.   TYPE_FLAG_INCOMPLETE = (1 << 14),
  203.   TYPE_FLAG_VARARGS = (1 << 15),
  204.   TYPE_FLAG_VECTOR = (1 << 16),
  205.   TYPE_FLAG_FIXED_INSTANCE = (1 << 17),
  206.   TYPE_FLAG_STUB_SUPPORTED = (1 << 18),
  207.   TYPE_FLAG_GNU_IFUNC = (1 << 19),

  209.   /* * Used for error-checking.  */
  210.   TYPE_FLAG_MIN = TYPE_FLAG_UNSIGNED
  211. };

  213. /* * Some bits for the type's instance_flags word.  See the macros
  214.    below for documentation on each bit.  Note that if you add a value
  215.    here, you must update the enum type_flag_value as well.  */

  217. ‌enum type_instance_flag_value
  218. {
  219.   TYPE_INSTANCE_FLAG_CONST = (1 << 0),
  220.   TYPE_INSTANCE_FLAG_VOLATILE = (1 << 1),
  221.   TYPE_INSTANCE_FLAG_CODE_SPACE = (1 << 2),
  222.   TYPE_INSTANCE_FLAG_DATA_SPACE = (1 << 3),
  223.   TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 = (1 << 4),
  224.   TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2 = (1 << 5),
  225.   TYPE_INSTANCE_FLAG_NOTTEXT = (1 << 6),
  226.   TYPE_INSTANCE_FLAG_RESTRICT = (1 << 7)
  227. };

  229. /* * Unsigned integer type.  If this is not set for a TYPE_CODE_INT,
  230.    the type is signed (unless TYPE_FLAG_NOSIGN (below) is set).  */

  232. ‌#define TYPE_UNSIGNED(t)        (TYPE_MAIN_TYPE (t)->flag_unsigned)

  234. /* * No sign for this type.  In C++, "char", "signed char", and
  235.    "unsigned char" are distinct types; so we need an extra flag to
  236.    indicate the absence of a sign!  */

  238. ‌#define TYPE_NOSIGN(t)                (TYPE_MAIN_TYPE (t)->flag_nosign)

  240. /* * This appears in a type's flags word if it is a stub type (e.g.,
  241.    if someone referenced a type that wasn't defined in a source file
  242.    via (struct sir_not_appearing_in_this_film *)).  */

  244. ‌#define TYPE_STUB(t)                (TYPE_MAIN_TYPE (t)->flag_stub)

  246. /* * The target type of this type is a stub type, and this type needs
  247.    to be updated if it gets un-stubbed in check_typedef.  Used for
  248.    arrays and ranges, in which TYPE_LENGTH of the array/range gets set
  249.    based on the TYPE_LENGTH of the target type.  Also, set for
  250.    TYPE_CODE_TYPEDEF.  */

  252. ‌#define TYPE_TARGET_STUB(t)        (TYPE_MAIN_TYPE (t)->flag_target_stub)

  254. /* * Static type.  If this is set, the corresponding type had
  255.    a static modifier.
  256.    Note: This may be unnecessary, since static data members
  257.    are indicated by other means (bitpos == -1).  */

  259. ‌#define TYPE_STATIC(t)                (TYPE_MAIN_TYPE (t)->flag_static)

  261. /* * This is a function type which appears to have a prototype.  We
  262.    need this for function calls in order to tell us if it's necessary
  263.    to coerce the args, or to just do the standard conversions.  This
  264.    is used with a short field.  */

  266. ‌#define TYPE_PROTOTYPED(t)        (TYPE_MAIN_TYPE (t)->flag_prototyped)

  268. /* * This flag is used to indicate that processing for this type
  269.    is incomplete.

  271.    (Mostly intended for HP platforms, where class methods, for
  272.    instance, can be encountered before their classes in the debug
  273.    info; the incomplete type has to be marked so that the class and
  274.    the method can be assigned correct types.)  */

  276. ‌#define TYPE_INCOMPLETE(t)        (TYPE_MAIN_TYPE (t)->flag_incomplete)

  278. /* * FIXME drow/2002-06-03:  Only used for methods, but applies as well
  279.    to functions.  */

  281. ‌#define TYPE_VARARGS(t)                (TYPE_MAIN_TYPE (t)->flag_varargs)

  283. /* * Identify a vector type.  Gcc is handling this by adding an extra
  284.    attribute to the array type.  We slurp that in as a new flag of a
  285.    type.  This is used only in dwarf2read.c.  */
  286. ‌#define TYPE_VECTOR(t)                (TYPE_MAIN_TYPE (t)->flag_vector)

  288. /* * The debugging formats (especially STABS) do not contain enough
  289.    information to represent all Ada types---especially those whose
  290.    size depends on dynamic quantities.  Therefore, the GNAT Ada
  291.    compiler includes extra information in the form of additional type
  292.    definitions connected by naming conventions.  This flag indicates
  293.    that the type is an ordinary (unencoded) GDB type that has been
  294.    created from the necessary run-time information, and does not need
  295.    further interpretation.  Optionally marks ordinary, fixed-size GDB
  296.    type.  */

  298. ‌#define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)

  300. /* * This debug target supports TYPE_STUB(t).  In the unsupported case
  301.    we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
  302.    TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
  303.    guessed the TYPE_STUB(t) value (see dwarfread.c).  */

  305. ‌#define TYPE_STUB_SUPPORTED(t)   (TYPE_MAIN_TYPE (t)->flag_stub_supported)

  307. /* * Not textual.  By default, GDB treats all single byte integers as
  308.    characters (or elements of strings) unless this flag is set.  */

  310. ‌#define TYPE_NOTTEXT(t)        (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)

  312. /* * Used only for TYPE_CODE_FUNC where it specifies the real function
  313.    address is returned by this function call.  TYPE_TARGET_TYPE
  314.    determines the final returned function type to be presented to
  315.    user.  */

  317. ‌#define TYPE_GNU_IFUNC(t)        (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)

  319. /* * Type owner.  If TYPE_OBJFILE_OWNED is true, the type is owned by
  320.    the objfile retrieved as TYPE_OBJFILE.  Otherweise, the type is
  321.    owned by an architecture; TYPE_OBJFILE is NULL in this case.  */

  323. ‌#define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
  324. ‌#define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
  325. ‌#define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)

  327. /* * True if this type was declared using the "class" keyword.  This is
  328.    only valid for C++ structure and enum types.  If false, a structure
  329.    was declared as a "struct"; if true it was declared "class".  For
  330.    enum types, this is true when "enum class" or "enum struct" was
  331.    used to declare the type..  */

  333. ‌#define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)

  335. /* * True if this type is a "flag" enum.  A flag enum is one where all
  336.    the values are pairwise disjoint when "and"ed together.  This
  337.    affects how enum values are printed.  */

  339. ‌#define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)

  341. /* * Constant type.  If this is set, the corresponding type has a
  342.    const modifier.  */

  344. ‌#define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST)

  346. /* * Volatile type.  If this is set, the corresponding type has a
  347.    volatile modifier.  */

  349. ‌#define TYPE_VOLATILE(t) \
  350.   (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE)

  352. /* * Restrict type.  If this is set, the corresponding type has a
  353.    restrict modifier.  */

  355. ‌#define TYPE_RESTRICT(t) \
  356.   (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT)

  358. /* * Instruction-space delimited type.  This is for Harvard architectures
  359.    which have separate instruction and data address spaces (and perhaps
  360.    others).

  362.    GDB usually defines a flat address space that is a superset of the
  363.    architecture's two (or more) address spaces, but this is an extension
  364.    of the architecture's model.

  366.    If TYPE_FLAG_INST is set, an object of the corresponding type
  367.    resides in instruction memory, even if its address (in the extended
  368.    flat address space) does not reflect this.

  370.    Similarly, if TYPE_FLAG_DATA is set, then an object of the
  371.    corresponding type resides in the data memory space, even if
  372.    this is not indicated by its (flat address space) address.

  374.    If neither flag is set, the default space for functions / methods
  375.    is instruction space, and for data objects is data memory.  */

  377. ‌#define TYPE_CODE_SPACE(t) \
  378.   (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE)

  380. ‌#define TYPE_DATA_SPACE(t) \
  381.   (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE)

  383. /* * Address class flags.  Some environments provide for pointers
  384.    whose size is different from that of a normal pointer or address
  385.    types where the bits are interpreted differently than normal
  386.    addresses.  The TYPE_FLAG_ADDRESS_CLASS_n flags may be used in
  387.    target specific ways to represent these different types of address
  388.    classes.  */

  390. ‌#define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
  391.                                  & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
  392. ‌#define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
  393.                                  & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
  394. ‌#define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
  395.   (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
  396. ‌#define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
  397.                                    & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)

  399. /* * Used to store a dynamic property.  */

  401. ‌struct dynamic_prop
  402. {
  403.   /* Determine which field of the union dynamic_prop.data is used.  */
  404.   enum
  405.   {
  406.     PROP_UNDEFINED, /* Not defined.  */
  407.     PROP_CONST,     /* Constant.  */
  408.     PROP_LOCEXPR,   /* Location expression.  */
  409.     PROP_LOCLIST    /* Location list.  */
  410.   } kind;

  412.   /* Storage for dynamic or static value.  */
  413. ‌  union data
  414.   {
  415.     /* Storage for constant property.  */

  417.     LONGEST const_val;

  419.     /* Storage for dynamic property.  */

  421.     void *baton;
  422.   } data;
  423. };


  426. /* * Determine which field of the union main_type.fields[x].loc is
  427.    used.  */

  429. ‌enum field_loc_kind
  430.   {
  431.     FIELD_LOC_KIND_BITPOS,        /**< bitpos */
  432.     FIELD_LOC_KIND_ENUMVAL,        /**< enumval */
  433.     FIELD_LOC_KIND_PHYSADDR,        /**< physaddr */
  434.     FIELD_LOC_KIND_PHYSNAME,        /**< physname */
  435.     FIELD_LOC_KIND_DWARF_BLOCK        /**< dwarf_block */
  436.   };

  438. /* * A discriminant to determine which field in the
  439.    main_type.type_specific union is being used, if any.

  441.    For types such as TYPE_CODE_FLT or TYPE_CODE_FUNC, the use of this
  442.    discriminant is really redundant, as we know from the type code
  443.    which field is going to be used.  As such, it would be possible to
  444.    reduce the size of this enum in order to save a bit or two for
  445.    other fields of struct main_type.  But, since we still have extra
  446.    room , and for the sake of clarity and consistency, we treat all fields
  447.    of the union the same way.  */

  449. ‌enum type_specific_kind
  450. {
  451.   TYPE_SPECIFIC_NONE,
  452.   TYPE_SPECIFIC_CPLUS_STUFF,
  453.   TYPE_SPECIFIC_GNAT_STUFF,
  454.   TYPE_SPECIFIC_FLOATFORMAT,
  455.   TYPE_SPECIFIC_FUNC
  456. };

  458. /* * Main structure representing a type in GDB.

  460.    This structure is space-critical.  Its layout has been tweaked to
  461.    reduce the space used.  */

  463. ‌struct main_type
  464. {
  465.   /* * Code for kind of type.  */

  467.   ENUM_BITFIELD(type_code) code : 8;

  469.   /* * Flags about this type.  These fields appear at this location
  470.      because they packs nicely here.  See the TYPE_* macros for
  471.      documentation about these fields.  */

  473.   unsigned int flag_unsigned : 1;
  474.   unsigned int flag_nosign : 1;
  475.   unsigned int flag_stub : 1;
  476.   unsigned int flag_target_stub : 1;
  477.   unsigned int flag_static : 1;
  478.   unsigned int flag_prototyped : 1;
  479.   unsigned int flag_incomplete : 1;
  480.   unsigned int flag_varargs : 1;
  481.   unsigned int flag_vector : 1;
  482.   unsigned int flag_stub_supported : 1;
  483.   unsigned int flag_gnu_ifunc : 1;
  484.   unsigned int flag_fixed_instance : 1;
  485.   unsigned int flag_objfile_owned : 1;

  487.   /* * True if this type was declared with "class" rather than
  488.      "struct".  */

  490.   unsigned int flag_declared_class : 1;

  492.   /* * True if this is an enum type with disjoint values.  This
  493.      affects how the enum is printed.  */

  495.   unsigned int flag_flag_enum : 1;

  497.   /* * A discriminant telling us which field of the type_specific
  498.      union is being used for this type, if any.  */

  500.   ENUM_BITFIELD(type_specific_kind) type_specific_field : 3;

  502.   /* * Number of fields described for this type.  This field appears
  503.      at this location because it packs nicely here.  */

  505.   short nfields;

  507.   /* * Field number of the virtual function table pointer in
  508.      VPTR_BASETYPE.  If -1, we were unable to find the virtual
  509.      function table pointer in initial symbol reading, and
  510.      get_vptr_fieldno should be called to find it if possible.
  511.      get_vptr_fieldno will update this field if possible.  Otherwise
  512.      the value is left at -1.

  514.      Unused if this type does not have virtual functions.

  516.      This field appears at this location because it packs nicely here.  */

  518.   short vptr_fieldno;

  520.   /* * Name of this type, or NULL if none.

  522.      This is used for printing only, except by poorly designed C++
  523.      code.  For looking up a name, look for a symbol in the
  524.      VAR_DOMAIN.  This is generally allocated in the objfile's
  525.      obstack.  However coffread.c uses malloc.  */

  527.   const char *name;

  529.   /* * Tag name for this type, or NULL if none.  This means that the
  530.      name of the type consists of a keyword followed by the tag name.
  531.      Which keyword is determined by the type code ("struct" for
  532.      TYPE_CODE_STRUCT, etc.).  As far as I know C/C++ are the only
  533.      languages with this feature.

  535.      This is used for printing only, except by poorly designed C++ code.
  536.      For looking up a name, look for a symbol in the STRUCT_DOMAIN.
  537.      One more legitimate use is that if TYPE_FLAG_STUB is set, this is
  538.      the name to use to look for definitions in other files.  */

  540.   const char *tag_name;

  542.   /* * Every type is now associated with a particular objfile, and the
  543.      type is allocated on the objfile_obstack for that objfile.  One
  544.      problem however, is that there are times when gdb allocates new
  545.      types while it is not in the process of reading symbols from a
  546.      particular objfile.  Fortunately, these happen when the type
  547.      being created is a derived type of an existing type, such as in
  548.      lookup_pointer_type().  So we can just allocate the new type
  549.      using the same objfile as the existing type, but to do this we
  550.      need a backpointer to the objfile from the existing type.  Yes
  551.      this is somewhat ugly, but without major overhaul of the internal
  552.      type system, it can't be avoided for now.  */

  554. ‌  union type_owner
  555.     {
  556.       struct objfile *objfile;
  557.       struct gdbarch *gdbarch;
  558.     } owner;

  560.   /* * For a pointer type, describes the type of object pointed to.
  561.      - For an array type, describes the type of the elements.
  562.      - For a function or method type, describes the type of the return value.
  563.      - For a range type, describes the type of the full range.
  564.      - For a complex type, describes the type of each coordinate.
  565.      - For a special record or union type encoding a dynamic-sized type
  566.      in GNAT, a memoized pointer to a corresponding static version of
  567.      the type.
  568.      - Unused otherwise.  */

  570.   struct type *target_type;

  572.   /* * For structure and union types, a description of each field.
  573.      For set and pascal array types, there is one "field",
  574.      whose type is the domain type of the set or array.
  575.      For range types, there are two "fields",
  576.      the minimum and maximum values (both inclusive).
  577.      For enum types, each possible value is described by one "field".
  578.      For a function or method type, a "field" for each parameter.
  579.      For C++ classes, there is one field for each base class (if it is
  580.      a derived class) plus one field for each class data member.  Member
  581.      functions are recorded elsewhere.

  583.      Using a pointer to a separate array of fields
  584.      allows all types to have the same size, which is useful
  585.      because we can allocate the space for a type before
  586.      we know what to put in it.  */

  588.   union
  589.   {
  590. ‌    struct field
  591.     {
  592. ‌      union field_location
  593.       {
  594.         /* * Position of this field, counting in bits from start of
  595.            containing structure.  For gdbarch_bits_big_endian=1
  596.            targets, it is the bit offset to the MSB.  For
  597.            gdbarch_bits_big_endian=0 targets, it is the bit offset to
  598.            the LSB.  */

  600.         int bitpos;

  602.         /* * Enum value.  */
  603.         LONGEST enumval;

  605.         /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
  606.            physaddr is the location (in the target) of the static
  607.            field.  Otherwise, physname is the mangled label of the
  608.            static field.  */

  610.         CORE_ADDR physaddr;
  611.         const char *physname;

  613.         /* * The field location can be computed by evaluating the
  614.            following DWARF block.  Its DATA is allocated on
  615.            objfile_obstack - no CU load is needed to access it.  */

  617.         struct dwarf2_locexpr_baton *dwarf_block;
  618.       }
  619.       loc;

  621.       /* * For a function or member type, this is 1 if the argument is
  622.          marked artificial.  Artificial arguments should not be shown
  623.          to the user.  For TYPE_CODE_RANGE it is set if the specific
  624.          bound is not defined.  */
  625.       unsigned int artificial : 1;

  627.       /* * Discriminant for union field_location.  */
  628.       ENUM_BITFIELD(field_loc_kind) loc_kind : 3;

  630.       /* * Size of this field, in bits, or zero if not packed.
  631.          If non-zero in an array type, indicates the element size in
  632.          bits (used only in Ada at the moment).
  633.          For an unpacked field, the field's type's length
  634.          says how many bytes the field occupies.  */

  636.       unsigned int bitsize : 28;

  638.       /* * In a struct or union type, type of this field.
  639.          - In a function or member type, type of this argument.
  640.          - In an array type, the domain-type of the array.  */

  642.       struct type *type;

  644.       /* * Name of field, value or argument.
  645.          NULL for range bounds, array domains, and member function
  646.          arguments.  */

  648.       const char *name;
  649.     } *fields;

  651.     /* * Union member used for range types.  */

  653. ‌    struct range_bounds
  654.     {
  655.       /* * Low bound of range.  */

  657.       struct dynamic_prop low;

  659.       /* * High bound of range.  */

  661.       struct dynamic_prop high;

  663.       /* True if HIGH range bound contains the number of elements in the
  664.          subrange. This affects how the final hight bound is computed.  */

  666.       int flag_upper_bound_is_count : 1;

  668.       /* True if LOW or/and HIGH are resolved into a static bound from
  669.          a dynamic one.  */

  671.       int flag_bound_evaluated : 1;
  672.     } *bounds;

  674.   } flds_bnds;

  676.   /* * For types with virtual functions (TYPE_CODE_STRUCT),
  677.      VPTR_BASETYPE is the base class which defined the virtual
  678.      function table pointer.

  680.      For types that are pointer to member types (TYPE_CODE_METHODPTR,
  681.      TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer
  682.      is a member of.

  684.      For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
  685.      type that contains the method.

  687.      Unused otherwise.  */

  689.   struct type *vptr_basetype;

  691.   /* * Slot to point to additional language-specific fields of this
  692.      type.  */

  694. ‌  union type_specific
  695.   {
  696.     /* * CPLUS_STUFF is for TYPE_CODE_STRUCT.  It is initialized to
  697.        point to cplus_struct_default, a default static instance of a
  698.        struct cplus_struct_type.  */

  700.     struct cplus_struct_type *cplus_stuff;

  702.     /* * GNAT_STUFF is for types for which the GNAT Ada compiler
  703.        provides additional information.  */

  705.     struct gnat_aux_type *gnat_stuff;

  707.     /* * FLOATFORMAT is for TYPE_CODE_FLT.  It is a pointer to two
  708.        floatformat objects that describe the floating-point value
  709.        that resides within the type.  The first is for big endian
  710.        targets and the second is for little endian targets.  */

  712.     const struct floatformat **floatformat;

  714.     /* * For TYPE_CODE_FUNC types,  */

  716.     struct func_type *func_stuff;
  717.   } type_specific;

  719.   /* * Contains a location description value for the current type. Evaluating
  720.      this field yields to the location of the data for an object.  */

  722.   struct dynamic_prop *data_location;
  723. };

  725. /* * A ``struct type'' describes a particular instance of a type, with
  726.    some particular qualification.  */

  728. ‌struct type
  729. {
  730.   /* * Type that is a pointer to this type.
  731.      NULL if no such pointer-to type is known yet.
  732.      The debugger may add the address of such a type
  733.      if it has to construct one later.  */

  735.   struct type *pointer_type;

  737.   /* * C++: also need a reference type.  */

  739.   struct type *reference_type;

  741.   /* * Variant chain.  This points to a type that differs from this
  742.      one only in qualifiers and length.  Currently, the possible
  743.      qualifiers are const, volatile, code-space, data-space, and
  744.      address class.  The length may differ only when one of the
  745.      address class flags are set.  The variants are linked in a
  746.      circular ring and share MAIN_TYPE.  */

  748.   struct type *chain;

  750.   /* * Flags specific to this instance of the type, indicating where
  751.      on the ring we are.

  753.      For TYPE_CODE_TYPEDEF the flags of the typedef type should be
  754.      binary or-ed with the target type, with a special case for
  755.      address class and space class.  For example if this typedef does
  756.      not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
  757.      instance flags are completely inherited from the target type.  No
  758.      qualifiers can be cleared by the typedef.  See also
  759.      check_typedef.  */
  760.   int instance_flags;

  762.   /* * Length of storage for a value of this type.  This is what
  763.      sizeof(type) would return; use it for address arithmetic, memory
  764.      reads and writes, etc.  This size includes padding.  For example,
  765.      an i386 extended-precision floating point value really only
  766.      occupies ten bytes, but most ABI's declare its size to be 12
  767.      bytes, to preserve alignment.  A `struct type' representing such
  768.      a floating-point type would have a `length' value of 12, even
  769.      though the last two bytes are unused.

  771.      There's a bit of a host/target mess here, if you're concerned
  772.      about machines whose bytes aren't eight bits long, or who don't
  773.      have byte-addressed memory.  Various places pass this to memcpy
  774.      and such, meaning it must be in units of host bytes.  Various
  775.      other places expect they can calculate addresses by adding it
  776.      and such, meaning it must be in units of target bytes.  For
  777.      some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
  778.      and TARGET_CHAR_BIT will be (say) 32, this is a problem.

  780.      One fix would be to make this field in bits (requiring that it
  781.      always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
  782.      the other choice would be to make it consistently in units of
  783.      HOST_CHAR_BIT.  However, this would still fail to address
  784.      machines based on a ternary or decimal representation.  */

  786.   unsigned length;

  788.   /* * Core type, shared by a group of qualified types.  */

  790.   struct main_type *main_type;
  791. };

  793. ‌#define        NULL_TYPE ((struct type *) 0)

  795. /* * C++ language-specific information for TYPE_CODE_STRUCT and
  796.    TYPE_CODE_UNION nodes.  */

  798. ‌struct cplus_struct_type
  799.   {
  800.     /* * Number of base classes this type derives from.  The
  801.        baseclasses are stored in the first N_BASECLASSES fields
  802.        (i.e. the `fields' field of the struct type).  I think only the
  803.        `type' field of such a field has any meaning.  */

  805.     short n_baseclasses;

  807.     /* * Number of methods with unique names.  All overloaded methods
  808.        with the same name count only once.  */

  810.     short nfn_fields;

  812.     /* * Number of template arguments.  */

  814.     unsigned short n_template_arguments;

  816.     /* * One if this struct is a dynamic class, as defined by the
  817.        Itanium C++ ABI: if it requires a virtual table pointer,
  818.        because it or any of its base classes have one or more virtual
  819.        member functions or virtual base classes.  Minus one if not
  820.        dynamic.  Zero if not yet computed.  */

  822.     int is_dynamic : 2;

  824.     /* * Non-zero if this type came from a Java CU.  */

  826.     unsigned int is_java : 1;

  828.     /* * For derived classes, the number of base classes is given by
  829.        n_baseclasses and virtual_field_bits is a bit vector containing
  830.        one bit per base class.  If the base class is virtual, the
  831.        corresponding bit will be set.
  832.        I.E, given:

  834.        class A{};
  835.        class B{};
  836.        class C : public B, public virtual A {};

  838.        B is a baseclass of C; A is a virtual baseclass for C.
  839.        This is a C++ 2.0 language feature.  */

  841.     B_TYPE *virtual_field_bits;

  843.     /* * For classes with private fields, the number of fields is
  844.        given by nfields and private_field_bits is a bit vector
  845.        containing one bit per field.

  847.        If the field is private, the corresponding bit will be set.  */

  849.     B_TYPE *private_field_bits;

  851.     /* * For classes with protected fields, the number of fields is
  852.        given by nfields and protected_field_bits is a bit vector
  853.        containing one bit per field.

  855.        If the field is private, the corresponding bit will be set.  */

  857.     B_TYPE *protected_field_bits;

  859.     /* * For classes with fields to be ignored, either this is
  860.        optimized out or this field has length 0.  */

  862.     B_TYPE *ignore_field_bits;

  864.     /* * For classes, structures, and unions, a description of each
  865.        field, which consists of an overloaded name, followed by the
  866.        types of arguments that the method expects, and then the name
  867.        after it has been renamed to make it distinct.

  869.        fn_fieldlists points to an array of nfn_fields of these.  */

  871. ‌    struct fn_fieldlist
  872.       {

  874.         /* * The overloaded name.
  875.            This is generally allocated in the objfile's obstack.
  876.            However stabsread.c sometimes uses malloc.  */

  878.         const char *name;

  880.         /* * The number of methods with this name.  */

  882.         int length;

  884.         /* * The list of methods.  */

  886. ‌        struct fn_field
  887.           {

  889.             /* * If is_stub is clear, this is the mangled name which
  890.                we can look up to find the address of the method
  891.                (FIXME: it would be cleaner to have a pointer to the
  892.                struct symbol here instead).

  894.                If is_stub is set, this is the portion of the mangled
  895.                name which specifies the arguments.  For example, "ii",
  896.                if there are two int arguments, or "" if there are no
  897.                arguments.  See gdb_mangle_name for the conversion from
  898.                this format to the one used if is_stub is clear.  */

  900.             const char *physname;

  902.             /* * The function type for the method.

  904.                (This comment used to say "The return value of the
  905.                method", but that's wrong.  The function type is
  906.                expected here, i.e. something with TYPE_CODE_FUNC, and
  907.                *not* the return-value type).  */

  909.             struct type *type;

  911.             /* * For virtual functions.
  912.                First baseclass that defines this virtual function.  */

  914.             struct type *fcontext;

  916.             /* Attributes.  */

  918.             unsigned int is_const:1;
  919.             unsigned int is_volatile:1;
  920.             unsigned int is_private:1;
  921.             unsigned int is_protected:1;
  922.             unsigned int is_public:1;
  923.             unsigned int is_abstract:1;
  924.             unsigned int is_static:1;
  925.             unsigned int is_final:1;
  926.             unsigned int is_synchronized:1;
  927.             unsigned int is_native:1;
  928.             unsigned int is_artificial:1;

  930.             /* * A stub method only has some fields valid (but they
  931.                are enough to reconstruct the rest of the fields).  */

  933.             unsigned int is_stub:1;

  935.             /* * True if this function is a constructor, false
  936.                otherwise.  */

  938.             unsigned int is_constructor : 1;

  940.             /* * Unused.  */

  942.             unsigned int dummy:3;

  944.             /* * Index into that baseclass's virtual function table,
  945.                minus 2; else if static: VOFFSET_STATIC; else: 0.  */

  947.             unsigned int voffset:16;

  949. ‌#define VOFFSET_STATIC 1

  951.           }
  952.          *fn_fields;

  954.       }
  955.      *fn_fieldlists;

  957.     /* * typedefs defined inside this class.  typedef_field points to
  958.        an array of typedef_field_count elements.  */

  960. ‌    struct typedef_field
  961.       {
  962.         /* * Unqualified name to be prefixed by owning class qualified
  963.            name.  */

  965.         const char *name;

  967.         /* * Type this typedef named NAME represents.  */

  969.         struct type *type;
  970.       }
  971.     *typedef_field;
  972.     unsigned typedef_field_count;

  974.     /* * The template arguments.  This is an array with
  975.        N_TEMPLATE_ARGUMENTS elements.  This is NULL for non-template
  976.        classes.  */

  978.     struct symbol **template_arguments;
  979.   };

  981. /* * Struct used to store conversion rankings.  */

  983. ‌struct rank
  984.   {
  985.     short rank;

  987.     /* * When two conversions are of the same type and therefore have
  988.        the same rank, subrank is used to differentiate the two.

  990.        Eg: Two derived-class-pointer to base-class-pointer conversions
  991.        would both have base pointer conversion rank, but the
  992.        conversion with the shorter distance to the ancestor is
  993.        preferable.  'subrank' would be used to reflect that.  */

  995.     short subrank;
  996.   };

  998. /* * Struct used for ranking a function for overload resolution.  */

  1000. ‌struct badness_vector
  1001.   {
  1002.     int length;
  1003.     struct rank *rank;
  1004.   };

  1006. /* * GNAT Ada-specific information for various Ada types.  */

  1008. ‌struct gnat_aux_type
  1009.   {
  1010.     /* * Parallel type used to encode information about dynamic types
  1011.        used in Ada (such as variant records, variable-size array,
  1012.        etc).  */
  1013.     struct type* descriptive_type;
  1014.   };

  1016. /* * For TYPE_CODE_FUNC types.  */

  1018. ‌struct func_type
  1019.   {
  1020.     /* * The calling convention for targets supporting multiple ABIs.
  1021.        Right now this is only fetched from the Dwarf-2
  1022.        DW_AT_calling_convention attribute.  */

  1024.     unsigned calling_convention;

  1026.     /* * Only those DW_TAG_GNU_call_site's in this function that have
  1027.        DW_AT_GNU_tail_call set are linked in this list.  Function
  1028.        without its tail call list complete
  1029.        (DW_AT_GNU_all_tail_call_sites or its superset
  1030.        DW_AT_GNU_all_call_sites) has TAIL_CALL_LIST NULL, even if some
  1031.        DW_TAG_GNU_call_site's exist in such function. */

  1033.     struct call_site *tail_call_list;
  1034.   };

  1036. /* struct call_site_parameter can be referenced in callees by several ways.  */

  1038. ‌enum call_site_parameter_kind
  1039. {
  1040.   /* * Use field call_site_parameter.u.dwarf_reg.  */
  1041.   CALL_SITE_PARAMETER_DWARF_REG,

  1043.   /* * Use field call_site_parameter.u.fb_offset.  */
  1044.   CALL_SITE_PARAMETER_FB_OFFSET,

  1046.   /* * Use field call_site_parameter.u.param_offset.  */
  1047.   CALL_SITE_PARAMETER_PARAM_OFFSET
  1048. };

  1050. /* * A place where a function gets called from, represented by
  1051.    DW_TAG_GNU_call_site.  It can be looked up from
  1052.    symtab->call_site_htab.  */

  1054. ‌struct call_site
  1055.   {
  1056.     /* * Address of the first instruction after this call.  It must be
  1057.        the first field as we overload core_addr_hash and core_addr_eq
  1058.        for it.  */

  1060.     CORE_ADDR pc;

  1062.     /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST.  */

  1064.     struct call_site *tail_call_next;

  1066.     /* * Describe DW_AT_GNU_call_site_target.  Missing attribute uses
  1067.        FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL.  */

  1069.     struct
  1070.       {
  1071.         union field_location loc;

  1073.         /* * Discriminant for union field_location.  */

  1075.         ENUM_BITFIELD(field_loc_kind) loc_kind : 3;
  1076.       }
  1077.     target;

  1079.     /* * Size of the PARAMETER array.  */

  1081.     unsigned parameter_count;

  1083.     /* * CU of the function where the call is located.  It gets used
  1084.        for DWARF blocks execution in the parameter array below.  */

  1086.     struct dwarf2_per_cu_data *per_cu;

  1088.     /* * Describe DW_TAG_GNU_call_site's DW_TAG_formal_parameter.  */

  1090. ‌    struct call_site_parameter
  1091.       {
  1092.         ENUM_BITFIELD (call_site_parameter_kind) kind : 2;

  1094. ‌        union call_site_parameter_u
  1095.           {
  1096.             /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
  1097.                as DWARF register number, for register passed
  1098.                parameters.  */

  1100.             int dwarf_reg;

  1102.             /* * Offset from the callee's frame base, for stack passed
  1103.                parameters.  This equals offset from the caller's stack
  1104.                pointer.  */

  1106.             CORE_ADDR fb_offset;

  1108.             /* * Offset relative to the start of this PER_CU to
  1109.                DW_TAG_formal_parameter which is referenced by both
  1110.                caller and the callee.  */

  1112.             cu_offset param_offset;
  1113.           }
  1114.         u;

  1116.         /* * DW_TAG_formal_parameter's DW_AT_GNU_call_site_value.  It
  1117.            is never NULL.  */

  1119.         const gdb_byte *value;
  1120.         size_t value_size;

  1122.         /* * DW_TAG_formal_parameter's DW_AT_GNU_call_site_data_value.
  1123.            It may be NULL if not provided by DWARF.  */

  1125.         const gdb_byte *data_value;
  1126.         size_t data_value_size;
  1127.       }
  1128.     parameter[1];
  1129.   };

  1131. /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
  1132.    static structure.  */

  1134. extern const struct cplus_struct_type cplus_struct_default;

  1136. extern void allocate_cplus_struct_type (struct type *);

  1138. ‌#define INIT_CPLUS_SPECIFIC(type) \
  1139.   (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
  1140.    TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
  1141.    &cplus_struct_default)

  1143. ‌#define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)

  1145. ‌#define HAVE_CPLUS_STRUCT(type) \
  1146.   (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
  1147.    && TYPE_RAW_CPLUS_SPECIFIC (type) !=  &cplus_struct_default)

  1149. extern const struct gnat_aux_type gnat_aux_default;

  1151. extern void allocate_gnat_aux_type (struct type *);

  1153. ‌#define INIT_GNAT_SPECIFIC(type) \
  1154.   (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
  1155.    TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
  1156. ‌#define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
  1157. /* * A macro that returns non-zero if the type-specific data should be
  1158.    read as "gnat-stuff".  */
  1159. ‌#define HAVE_GNAT_AUX_INFO(type) \
  1160.   (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)

  1162. ‌#define INIT_FUNC_SPECIFIC(type)                                               \
  1163.   (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC,                               \
  1164.    TYPE_MAIN_TYPE (type)->type_specific.func_stuff                               \
  1165.      = TYPE_ZALLOC (type,                                                       \
  1166.                     sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))

  1168. ‌#define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
  1169. ‌#define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
  1170. ‌#define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
  1171. ‌#define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
  1172. ‌#define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
  1173. ‌#define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
  1174. ‌#define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
  1175. ‌#define TYPE_CHAIN(thistype) (thistype)->chain
  1176. /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
  1177.    But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
  1178.    so you only have to call check_typedef once.  Since allocate_value
  1179.    calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe.  */
  1180. ‌#define TYPE_LENGTH(thistype) (thistype)->length
  1181. /* * Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
  1182.    type, you need to do TYPE_CODE (check_type (this_type)).  */
  1183. ‌#define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
  1184. ‌#define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
  1185. ‌#define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields

  1187. ‌#define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
  1188. ‌#define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
  1189. ‌#define TYPE_LOW_BOUND(range_type) \
  1190.   TYPE_RANGE_DATA(range_type)->low.data.const_val
  1191. ‌#define TYPE_HIGH_BOUND(range_type) \
  1192.   TYPE_RANGE_DATA(range_type)->high.data.const_val
  1193. ‌#define TYPE_LOW_BOUND_UNDEFINED(range_type) \
  1194.   (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
  1195. ‌#define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
  1196.   (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
  1197. ‌#define TYPE_HIGH_BOUND_KIND(range_type) \
  1198.   TYPE_RANGE_DATA(range_type)->high.kind
  1199. ‌#define TYPE_LOW_BOUND_KIND(range_type) \
  1200.   TYPE_RANGE_DATA(range_type)->low.kind

  1202. /* Attribute accessors for the type data location.  */
  1203. ‌#define TYPE_DATA_LOCATION(thistype) \
  1204.   TYPE_MAIN_TYPE(thistype)->data_location
  1205. ‌#define TYPE_DATA_LOCATION_BATON(thistype) \
  1206.   TYPE_DATA_LOCATION (thistype)->data.baton
  1207. ‌#define TYPE_DATA_LOCATION_ADDR(thistype) \
  1208.   TYPE_DATA_LOCATION (thistype)->data.const_val
  1209. ‌#define TYPE_DATA_LOCATION_KIND(thistype) \
  1210.   TYPE_DATA_LOCATION (thistype)->kind

  1212. /* Moto-specific stuff for FORTRAN arrays.  */

  1214. ‌#define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
  1215.    TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
  1216. ‌#define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
  1217.    TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))

  1219. ‌#define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
  1220.    (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))

  1222. ‌#define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
  1223.    (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))

  1225. /* C++ */

  1227. ‌#define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
  1228. ‌#define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
  1229. ‌#define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
  1230. ‌#define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
  1231. ‌#define TYPE_SPECIFIC_FIELD(thistype) \
  1232.   TYPE_MAIN_TYPE(thistype)->type_specific_field
  1233. ‌#define        TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
  1234. /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
  1235.    where we're trying to print an Ada array using the C language.
  1236.    In that case, there is no "cplus_stuff", but the C language assumes
  1237.    that there is.  What we do, in that case, is pretend that there is
  1238.    an implicit one which is the default cplus stuff.  */
  1239. ‌#define TYPE_CPLUS_SPECIFIC(thistype) \
  1240.    (!HAVE_CPLUS_STRUCT(thistype) \
  1241.     ? (struct cplus_struct_type*)&cplus_struct_default \
  1242.     : TYPE_RAW_CPLUS_SPECIFIC(thistype))
  1243. ‌#define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
  1244. ‌#define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
  1245. ‌#define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
  1246. ‌#define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
  1247. ‌#define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
  1248. ‌#define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
  1249. ‌#define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
  1250. ‌#define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
  1251. ‌#define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
  1252. ‌#define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
  1253. ‌#define BASETYPE_VIA_PUBLIC(thistype, index) \
  1254.   ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
  1255. ‌#define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
  1256. ‌#define TYPE_CPLUS_REALLY_JAVA(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_java

  1258. ‌#define BASETYPE_VIA_VIRTUAL(thistype, index) \
  1259.   (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
  1260.     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))

  1262. ‌#define FIELD_TYPE(thisfld) ((thisfld).type)
  1263. ‌#define FIELD_NAME(thisfld) ((thisfld).name)
  1264. ‌#define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
  1265. ‌#define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
  1266. ‌#define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
  1267. ‌#define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
  1268. ‌#define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
  1269. ‌#define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
  1270. ‌#define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
  1271. ‌#define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
  1272. ‌#define SET_FIELD_BITPOS(thisfld, bitpos)                        \
  1273.   (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS,                \
  1274.    FIELD_BITPOS_LVAL (thisfld) = (bitpos))
  1275. ‌#define SET_FIELD_ENUMVAL(thisfld, enumval)                        \
  1276.   (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL,                \
  1277.    FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
  1278. ‌#define SET_FIELD_PHYSNAME(thisfld, name)                        \
  1279.   (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME,                \
  1280.    FIELD_STATIC_PHYSNAME (thisfld) = (name))
  1281. ‌#define SET_FIELD_PHYSADDR(thisfld, addr)                        \
  1282.   (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR,                \
  1283.    FIELD_STATIC_PHYSADDR (thisfld) = (addr))
  1284. ‌#define SET_FIELD_DWARF_BLOCK(thisfld, addr)                        \
  1285.   (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK,        \
  1286.    FIELD_DWARF_BLOCK (thisfld) = (addr))
  1287. ‌#define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
  1288. ‌#define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)

  1290. ‌#define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
  1291. ‌#define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
  1292. ‌#define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
  1293. ‌#define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
  1294. ‌#define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
  1295. ‌#define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL (TYPE_FIELD (thistype, n))
  1296. ‌#define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
  1297. ‌#define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
  1298. ‌#define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
  1299. ‌#define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
  1300. ‌#define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
  1301. ‌#define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)

  1303. ‌#define TYPE_FIELD_PRIVATE_BITS(thistype) \
  1304.   TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
  1305. ‌#define TYPE_FIELD_PROTECTED_BITS(thistype) \
  1306.   TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
  1307. ‌#define TYPE_FIELD_IGNORE_BITS(thistype) \
  1308.   TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
  1309. ‌#define TYPE_FIELD_VIRTUAL_BITS(thistype) \
  1310.   TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
  1311. ‌#define SET_TYPE_FIELD_PRIVATE(thistype, n) \
  1312.   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
  1313. ‌#define SET_TYPE_FIELD_PROTECTED(thistype, n) \
  1314.   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
  1315. ‌#define SET_TYPE_FIELD_IGNORE(thistype, n) \
  1316.   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
  1317. ‌#define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
  1318.   B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
  1319. ‌#define TYPE_FIELD_PRIVATE(thistype, n) \
  1320.   (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
  1321.     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
  1322. ‌#define TYPE_FIELD_PROTECTED(thistype, n) \
  1323.   (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
  1324.     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
  1325. ‌#define TYPE_FIELD_IGNORE(thistype, n) \
  1326.   (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
  1327.     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
  1328. ‌#define TYPE_FIELD_VIRTUAL(thistype, n) \
  1329.   (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
  1330.     : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))

  1332. ‌#define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
  1333. ‌#define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
  1334. ‌#define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
  1335. ‌#define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
  1336. ‌#define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length

  1338. ‌#define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
  1339.   TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
  1340. ‌#define TYPE_TEMPLATE_ARGUMENTS(thistype) \
  1341.   TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
  1342. ‌#define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
  1343.   TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]

  1345. ‌#define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
  1346. ‌#define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
  1347. ‌#define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
  1348. ‌#define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
  1349. ‌#define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
  1350. ‌#define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
  1351. ‌#define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
  1352. ‌#define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
  1353. ‌#define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
  1354. ‌#define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
  1355. ‌#define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
  1356. ‌#define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
  1357. ‌#define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
  1358. ‌#define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
  1359. ‌#define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
  1360. ‌#define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
  1361. ‌#define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
  1362. ‌#define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
  1363. ‌#define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
  1364. ‌#define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
  1365. ‌#define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)

  1367. ‌#define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
  1368.   TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
  1369. ‌#define TYPE_TYPEDEF_FIELD(thistype, n) \
  1370.   TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
  1371. ‌#define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
  1372.   TYPE_TYPEDEF_FIELD (thistype, n).name
  1373. ‌#define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
  1374.   TYPE_TYPEDEF_FIELD (thistype, n).type
  1375. ‌#define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
  1376.   TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count

  1378. ‌#define TYPE_IS_OPAQUE(thistype) \
  1379.   (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
  1380.     || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
  1381.    && (TYPE_NFIELDS (thistype) == 0) \
  1382.    && (!HAVE_CPLUS_STRUCT (thistype) \
  1383.        || TYPE_NFN_FIELDS (thistype) == 0) \
  1384.    && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))

  1386. /* * A helper macro that returns the name of a type or "unnamed type"
  1387.    if the type has no name.  */

  1389. ‌#define TYPE_SAFE_NAME(type) \
  1390.   (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>"))

  1392. /* * A helper macro that returns the name of an error type.  If the
  1393.    type has a name, it is used; otherwise, a default is used.  */

  1395. ‌#define TYPE_ERROR_NAME(type) \
  1396.   (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))

  1398. ‌struct builtin_type
  1399. {
  1400.   /* Integral types.  */

  1402.   /* Implicit size/sign (based on the architecture's ABI).  */
  1403.   struct type *builtin_void;
  1404.   struct type *builtin_char;
  1405.   struct type *builtin_short;
  1406.   struct type *builtin_int;
  1407.   struct type *builtin_long;
  1408.   struct type *builtin_signed_char;
  1409.   struct type *builtin_unsigned_char;
  1410.   struct type *builtin_unsigned_short;
  1411.   struct type *builtin_unsigned_int;
  1412.   struct type *builtin_unsigned_long;
  1413.   struct type *builtin_float;
  1414.   struct type *builtin_double;
  1415.   struct type *builtin_long_double;
  1416.   struct type *builtin_complex;
  1417.   struct type *builtin_double_complex;
  1418.   struct type *builtin_string;
  1419.   struct type *builtin_bool;
  1420.   struct type *builtin_long_long;
  1421.   struct type *builtin_unsigned_long_long;
  1422.   struct type *builtin_decfloat;
  1423.   struct type *builtin_decdouble;
  1424.   struct type *builtin_declong;

  1426.   /* "True" character types.
  1427.       We use these for the '/c' print format, because c_char is just a
  1428.       one-byte integral type, which languages less laid back than C
  1429.       will print as ... well, a one-byte integral type.  */
  1430.   struct type *builtin_true_char;
  1431.   struct type *builtin_true_unsigned_char;

  1433.   /* Explicit sizes - see C9X <intypes.h> for naming scheme.  The "int0"
  1434.      is for when an architecture needs to describe a register that has
  1435.      no size.  */
  1436.   struct type *builtin_int0;
  1437.   struct type *builtin_int8;
  1438.   struct type *builtin_uint8;
  1439.   struct type *builtin_int16;
  1440.   struct type *builtin_uint16;
  1441.   struct type *builtin_int32;
  1442.   struct type *builtin_uint32;
  1443.   struct type *builtin_int64;
  1444.   struct type *builtin_uint64;
  1445.   struct type *builtin_int128;
  1446.   struct type *builtin_uint128;

  1448.   /* Wide character types.  */
  1449.   struct type *builtin_char16;
  1450.   struct type *builtin_char32;

  1452.   /* Pointer types.  */

  1454.   /* * `pointer to data' type.  Some target platforms use an implicitly
  1455.      {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA.  */
  1456.   struct type *builtin_data_ptr;

  1458.   /* * `pointer to function (returning void)' type.  Harvard
  1459.      architectures mean that ABI function and code pointers are not
  1460.      interconvertible.  Similarly, since ANSI, C standards have
  1461.      explicitly said that pointers to functions and pointers to data
  1462.      are not interconvertible --- that is, you can't cast a function
  1463.      pointer to void * and back, and expect to get the same value.
  1464.      However, all function pointer types are interconvertible, so void
  1465.      (*) () can server as a generic function pointer.  */

  1467.   struct type *builtin_func_ptr;

  1469.   /* * `function returning pointer to function (returning void)' type.
  1470.      The final void return type is not significant for it.  */

  1472.   struct type *builtin_func_func;

  1474.   /* Special-purpose types.  */

  1476.   /* * This type is used to represent a GDB internal function.  */

  1478.   struct type *internal_fn;

  1480.   /* * This type is used to represent an xmethod.  */
  1481.   struct type *xmethod;
  1482. };

  1484. /* * Return the type table for the specified architecture.  */

  1486. extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch);

  1488. /* * Per-objfile types used by symbol readers.  */

  1490. ‌struct objfile_type
  1491. {
  1492.   /* Basic types based on the objfile architecture.  */
  1493.   struct type *builtin_void;
  1494.   struct type *builtin_char;
  1495.   struct type *builtin_short;
  1496.   struct type *builtin_int;
  1497.   struct type *builtin_long;
  1498.   struct type *builtin_long_long;
  1499.   struct type *builtin_signed_char;
  1500.   struct type *builtin_unsigned_char;
  1501.   struct type *builtin_unsigned_short;
  1502.   struct type *builtin_unsigned_int;
  1503.   struct type *builtin_unsigned_long;
  1504.   struct type *builtin_unsigned_long_long;
  1505.   struct type *builtin_float;
  1506.   struct type *builtin_double;
  1507.   struct type *builtin_long_double;

  1509.   /* * This type is used to represent symbol addresses.  */
  1510.   struct type *builtin_core_addr;

  1512.   /* * This type represents a type that was unrecognized in symbol
  1513.      read-in.  */
  1514.   struct type *builtin_error;

  1516.   /* * Types used for symbols with no debug information.  */
  1517.   struct type *nodebug_text_symbol;
  1518.   struct type *nodebug_text_gnu_ifunc_symbol;
  1519.   struct type *nodebug_got_plt_symbol;
  1520.   struct type *nodebug_data_symbol;
  1521.   struct type *nodebug_unknown_symbol;
  1522.   struct type *nodebug_tls_symbol;
  1523. };

  1525. /* * Return the type table for the specified objfile.  */

  1527. extern const struct objfile_type *objfile_type (struct objfile *objfile);

  1529. /* Explicit floating-point formats.  See "floatformat.h".  */
  1530. extern const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN];
  1531. extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN];
  1532. extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN];
  1533. extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN];
  1534. extern const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN];
  1535. extern const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN];
  1536. extern const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN];
  1537. extern const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN];
  1538. extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN];
  1539. extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN];
  1540. extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN];
  1541. extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN];


  1544. /* * Allocate space for storing data associated with a particular
  1545.    type.  We ensure that the space is allocated using the same
  1546.    mechanism that was used to allocate the space for the type
  1547.    structure itself.  I.e.  if the type is on an objfile's
  1548.    objfile_obstack, then the space for data associated with that type
  1549.    will also be allocated on the objfile_obstack.  If the type is not
  1550.    associated with any particular objfile (such as builtin types),
  1551.    then the data space will be allocated with xmalloc, the same as for
  1552.    the type structure.  */

  1554. ‌#define TYPE_ALLOC(t,size)  \
  1555.    (TYPE_OBJFILE_OWNED (t) \
  1556.     ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
  1557.     : xmalloc (size))

  1559. ‌#define TYPE_ZALLOC(t,size)  \
  1560.    (TYPE_OBJFILE_OWNED (t) \
  1561.     ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size),  \
  1562.               0, size)  \
  1563.     : xzalloc (size))

  1565. /* Use alloc_type to allocate a type owned by an objfile.  Use
  1566.    alloc_type_arch to allocate a type owned by an architecture.  Use
  1567.    alloc_type_copy to allocate a type with the same owner as a
  1568.    pre-existing template type, no matter whether objfile or
  1569.    gdbarch.  */
  1570. extern struct type *alloc_type (struct objfile *);
  1571. extern struct type *alloc_type_arch (struct gdbarch *);
  1572. extern struct type *alloc_type_copy (const struct type *);

  1574. /* * Return the type's architecture.  For types owned by an
  1575.    architecture, that architecture is returned.  For types owned by an
  1576.    objfile, that objfile's architecture is returned.  */

  1578. extern struct gdbarch *get_type_arch (const struct type *);

  1580. /* * This returns the target type (or NULL) of TYPE, also skipping
  1581.    past typedefs.  */

  1583. extern struct type *get_target_type (struct type *type);

  1585. /* * Helper function to construct objfile-owned types.  */

  1587. extern struct type *init_type (enum type_code, int, int, const char *,
  1588.                                struct objfile *);

  1590. /* Helper functions to construct architecture-owned types.  */
  1591. extern struct type *arch_type (struct gdbarch *, enum type_code, int, char *);
  1592. extern struct type *arch_integer_type (struct gdbarch *, int, int, char *);
  1593. extern struct type *arch_character_type (struct gdbarch *, int, int, char *);
  1594. extern struct type *arch_boolean_type (struct gdbarch *, int, int, char *);
  1595. extern struct type *arch_float_type (struct gdbarch *, int, char *,
  1596.                                      const struct floatformat **);
  1597. extern struct type *arch_complex_type (struct gdbarch *, char *,
  1598.                                        struct type *);

  1600. /* Helper functions to construct a struct or record type.  An
  1601.    initially empty type is created using arch_composite_type().
  1602.    Fields are then added using append_composite_type_field*().  A union
  1603.    type has its size set to the largest field.  A struct type has each
  1604.    field packed against the previous.  */

  1606. extern struct type *arch_composite_type (struct gdbarch *gdbarch,
  1607.                                          char *name, enum type_code code);
  1608. extern void append_composite_type_field (struct type *t, char *name,
  1609.                                          struct type *field);
  1610. extern void append_composite_type_field_aligned (struct type *t,
  1611.                                                  char *name,
  1612.                                                  struct type *field,
  1613.                                                  int alignment);
  1614. struct field *append_composite_type_field_raw (struct type *t, char *name,
  1615.                                                struct type *field);

  1617. /* Helper functions to construct a bit flags type.  An initially empty
  1618.    type is created using arch_flag_type().  Flags are then added using
  1619.    append_flag_type_flag().  */
  1620. extern struct type *arch_flags_type (struct gdbarch *gdbarch,
  1621.                                      char *name, int length);
  1622. extern void append_flags_type_flag (struct type *type, int bitpos, char *name);

  1624. extern void make_vector_type (struct type *array_type);
  1625. extern struct type *init_vector_type (struct type *elt_type, int n);

  1627. extern struct type *lookup_reference_type (struct type *);

  1629. extern struct type *make_reference_type (struct type *, struct type **);

  1631. extern struct type *make_cv_type (int, int, struct type *, struct type **);

  1633. extern struct type *make_restrict_type (struct type *);

  1635. extern struct type *make_unqualified_type (struct type *);

  1637. extern void replace_type (struct type *, struct type *);

  1639. extern int address_space_name_to_int (struct gdbarch *, char *);

  1641. extern const char *address_space_int_to_name (struct gdbarch *, int);

  1643. extern struct type *make_type_with_address_space (struct type *type,
  1644.                                                   int space_identifier);

  1646. extern struct type *lookup_memberptr_type (struct type *, struct type *);

  1648. extern struct type *lookup_methodptr_type (struct type *);

  1650. extern void smash_to_method_type (struct type *type, struct type *domain,
  1651.                                   struct type *to_type, struct field *args,
  1652.                                   int nargs, int varargs);

  1654. extern void smash_to_memberptr_type (struct type *, struct type *,
  1655.                                      struct type *);

  1657. extern void smash_to_methodptr_type (struct type *, struct type *);

  1659. extern struct type *allocate_stub_method (struct type *);

  1661. extern const char *type_name_no_tag (const struct type *);

  1663. extern const char *type_name_no_tag_or_error (struct type *type);

  1665. extern struct type *lookup_struct_elt_type (struct type *, const char *, int);

  1667. extern struct type *make_pointer_type (struct type *, struct type **);

  1669. extern struct type *lookup_pointer_type (struct type *);

  1671. extern struct type *make_function_type (struct type *, struct type **);

  1673. extern struct type *lookup_function_type (struct type *);

  1675. extern struct type *lookup_function_type_with_arguments (struct type *,
  1676.                                                          int,
  1677.                                                          struct type **);

  1679. extern struct type *create_static_range_type (struct type *, struct type *,
  1680.                                               LONGEST, LONGEST);


  1683. extern struct type *create_array_type_with_stride
  1684.   (struct type *, struct type *, struct type *, unsigned int);

  1686. extern struct type *create_range_type (struct type *, struct type *,
  1687.                                        const struct dynamic_prop *,
  1688.                                        const struct dynamic_prop *);

  1690. extern struct type *create_array_type (struct type *, struct type *,
  1691.                                        struct type *);

  1693. extern struct type *lookup_array_range_type (struct type *, LONGEST, LONGEST);

  1695. extern struct type *create_string_type (struct type *, struct type *,
  1696.                                         struct type *);
  1697. extern struct type *lookup_string_range_type (struct type *, LONGEST, LONGEST);

  1699. extern struct type *create_set_type (struct type *, struct type *);

  1701. extern struct type *lookup_unsigned_typename (const struct language_defn *,
  1702.                                               struct gdbarch *, const char *);

  1704. extern struct type *lookup_signed_typename (const struct language_defn *,
  1705.                                             struct gdbarch *, const char *);

  1707. extern void get_unsigned_type_max (struct type *, ULONGEST *);

  1709. extern void get_signed_type_minmax (struct type *, LONGEST *, LONGEST *);

  1711. /* * Resolve all dynamic values of a type e.g. array bounds to static values.
  1712.    ADDR specifies the location of the variable the type is bound to.
  1713.    If TYPE has no dynamic properties return TYPE; otherwise a new type with
  1714.    static properties is returned.  */
  1715. extern struct type *resolve_dynamic_type (struct type *type, CORE_ADDR addr);

  1717. /* * Predicate if the type has dynamic values, which are not resolved yet.  */
  1718. extern int is_dynamic_type (struct type *type);

  1720. extern struct type *check_typedef (struct type *);

  1722. ‌#define CHECK_TYPEDEF(TYPE)                        \
  1723.   do {                                                \
  1724.     (TYPE) = check_typedef (TYPE);                \
  1725.   } while (0)

  1727. extern void check_stub_method_group (struct type *, int);

  1729. extern char *gdb_mangle_name (struct type *, int, int);

  1731. extern struct type *lookup_typename (const struct language_defn *,
  1732.                                      struct gdbarch *, const char *,
  1733.                                      const struct block *, int);

  1735. extern struct type *lookup_template_type (char *, struct type *,
  1736.                                           const struct block *);

  1738. extern int get_vptr_fieldno (struct type *, struct type **);

  1740. extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *);

  1742. extern int get_array_bounds (struct type *type, LONGEST *low_bound,
  1743.                              LONGEST *high_bound);

  1745. extern int class_types_same_p (const struct type *, const struct type *);

  1747. extern int is_ancestor (struct type *, struct type *);

  1749. extern int is_public_ancestor (struct type *, struct type *);

  1751. extern int is_unique_ancestor (struct type *, struct value *);

  1753. /* Overload resolution */

  1755. ‌#define LENGTH_MATCH(bv) ((bv)->rank[0])

  1757. /* * Badness if parameter list length doesn't match arg list length.  */
  1758. extern const struct rank LENGTH_MISMATCH_BADNESS;

  1760. /* * Dummy badness value for nonexistent parameter positions.  */
  1761. extern const struct rank TOO_FEW_PARAMS_BADNESS;
  1762. /* * Badness if no conversion among types.  */
  1763. extern const struct rank INCOMPATIBLE_TYPE_BADNESS;

  1765. /* * Badness of an exact match.  */
  1766. extern const struct rank EXACT_MATCH_BADNESS;

  1768. /* * Badness of integral promotion.  */
  1769. extern const struct rank INTEGER_PROMOTION_BADNESS;
  1770. /* * Badness of floating promotion.  */
  1771. extern const struct rank FLOAT_PROMOTION_BADNESS;
  1772. /* * Badness of converting a derived class pointer
  1773.    to a base class pointer.  */
  1774. extern const struct rank BASE_PTR_CONVERSION_BADNESS;
  1775. /* * Badness of integral conversion.  */
  1776. extern const struct rank INTEGER_CONVERSION_BADNESS;
  1777. /* * Badness of floating conversion.  */
  1778. extern const struct rank FLOAT_CONVERSION_BADNESS;
  1779. /* * Badness of integer<->floating conversions.  */
  1780. extern const struct rank INT_FLOAT_CONVERSION_BADNESS;
  1781. /* * Badness of conversion of pointer to void pointer.  */
  1782. extern const struct rank VOID_PTR_CONVERSION_BADNESS;
  1783. /* * Badness of conversion to boolean.  */
  1784. extern const struct rank BOOL_CONVERSION_BADNESS;
  1785. /* * Badness of converting derived to base class.  */
  1786. extern const struct rank BASE_CONVERSION_BADNESS;
  1787. /* * Badness of converting from non-reference to reference.  */
  1788. extern const struct rank REFERENCE_CONVERSION_BADNESS;
  1789. /* * Badness of converting integer 0 to NULL pointer.  */
  1790. extern const struct rank NULL_POINTER_CONVERSION;

  1792. /* Non-standard conversions allowed by the debugger */

  1794. /* * Converting a pointer to an int is usually OK.  */
  1795. extern const struct rank NS_POINTER_CONVERSION_BADNESS;

  1797. /* * Badness of converting a (non-zero) integer constant
  1798.    to a pointer.  */
  1799. extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS;

  1801. extern struct rank sum_ranks (struct rank a, struct rank b);
  1802. extern int compare_ranks (struct rank a, struct rank b);

  1804. extern int compare_badness (struct badness_vector *, struct badness_vector *);

  1806. extern struct badness_vector *rank_function (struct type **, int,
  1807.                                              struct value **, int);

  1809. extern struct rank rank_one_type (struct type *, struct type *,
  1810.                                   struct value *);

  1812. extern void recursive_dump_type (struct type *, int);

  1814. extern int field_is_static (struct field *);

  1816. /* printcmd.c */

  1818. extern void print_scalar_formatted (const void *, struct type *,
  1819.                                     const struct value_print_options *,
  1820.                                     int, struct ui_file *);

  1822. extern int can_dereference (struct type *);

  1824. extern int is_integral_type (struct type *);

  1826. extern int is_scalar_type_recursive (struct type *);

  1828. extern int class_or_union_p (const struct type *);

  1830. extern void maintenance_print_type (char *, int);

  1832. extern htab_t create_copied_types_hash (struct objfile *objfile);

  1834. extern struct type *copy_type_recursive (struct objfile *objfile,
  1835.                                          struct type *type,
  1836.                                          htab_t copied_types);

  1838. extern struct type *copy_type (const struct type *type);

  1840. extern int types_equal (struct type *, struct type *);

  1842. extern int types_deeply_equal (struct type *, struct type *);

  1844. #endif /* GDBTYPES_H */