2 /* Internal type definitions for GDB.
4 Copyright (C) 1992-2019 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)
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
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.
48 #include "gdbsupport/array-view.h"
49 #include "gdbsupport/offset-type.h"
50 #include "gdbsupport/enum-flags.h"
51 #include "gdbsupport/underlying.h"
52 #include "gdbsupport/print-utils.h"
54 /* Forward declarations for prototypes. */
57 struct value_print_options
;
60 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
61 are already DWARF-specific. */
63 /* * Offset relative to the start of its containing CU (compilation
65 DEFINE_OFFSET_TYPE (cu_offset
, unsigned int);
67 /* * Offset relative to the start of its .debug_info or .debug_types
69 DEFINE_OFFSET_TYPE (sect_offset
, uint64_t);
72 sect_offset_str (sect_offset offset
)
74 return hex_string (to_underlying (offset
));
77 /* Some macros for char-based bitfields. */
79 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
80 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
81 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
82 #define B_TYPE unsigned char
83 #define B_BYTES(x) ( 1 + ((x)>>3) )
84 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
86 /* * Different kinds of data types are distinguished by the `code'
91 TYPE_CODE_BITSTRING
= -1, /**< Deprecated */
92 TYPE_CODE_UNDEF
= 0, /**< Not used; catches errors */
93 TYPE_CODE_PTR
, /**< Pointer type */
95 /* * Array type with lower & upper bounds.
97 Regardless of the language, GDB represents multidimensional
98 array types the way C does: as arrays of arrays. So an
99 instance of a GDB array type T can always be seen as a series
100 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
103 Row-major languages like C lay out multi-dimensional arrays so
104 that incrementing the rightmost index in a subscripting
105 expression results in the smallest change in the address of the
106 element referred to. Column-major languages like Fortran lay
107 them out so that incrementing the leftmost index results in the
110 This means that, in column-major languages, working our way
111 from type to target type corresponds to working through indices
112 from right to left, not left to right. */
115 TYPE_CODE_STRUCT
, /**< C struct or Pascal record */
116 TYPE_CODE_UNION
, /**< C union or Pascal variant part */
117 TYPE_CODE_ENUM
, /**< Enumeration type */
118 TYPE_CODE_FLAGS
, /**< Bit flags type */
119 TYPE_CODE_FUNC
, /**< Function type */
120 TYPE_CODE_INT
, /**< Integer type */
122 /* * Floating type. This is *NOT* a complex type. Beware, there
123 are parts of GDB which bogusly assume that TYPE_CODE_FLT can
127 /* * Void type. The length field specifies the length (probably
128 always one) which is used in pointer arithmetic involving
129 pointers to this type, but actually dereferencing such a
130 pointer is invalid; a void type has no length and no actual
131 representation in memory or registers. A pointer to a void
132 type is a generic pointer. */
135 TYPE_CODE_SET
, /**< Pascal sets */
136 TYPE_CODE_RANGE
, /**< Range (integers within spec'd bounds). */
138 /* * A string type which is like an array of character but prints
139 differently. It does not contain a length field as Pascal
140 strings (for many Pascals, anyway) do; if we want to deal with
141 such strings, we should use a new type code. */
144 /* * Unknown type. The length field is valid if we were able to
145 deduce that much about the type, or 0 if we don't even know
150 TYPE_CODE_METHOD
, /**< Method type */
152 /* * Pointer-to-member-function type. This describes how to access a
153 particular member function of a class (possibly a virtual
154 member function). The representation may vary between different
158 /* * Pointer-to-member type. This is the offset within a class to
159 some particular data member. The only currently supported
160 representation uses an unbiased offset, with -1 representing
161 NULL; this is used by the Itanium C++ ABI (used by GCC on all
165 TYPE_CODE_REF
, /**< C++ Reference types */
167 TYPE_CODE_RVALUE_REF
, /**< C++ rvalue reference types */
169 TYPE_CODE_CHAR
, /**< *real* character type */
171 /* * Boolean type. 0 is false, 1 is true, and other values are
172 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
176 TYPE_CODE_COMPLEX
, /**< Complex float */
180 TYPE_CODE_NAMESPACE
, /**< C++ namespace. */
182 TYPE_CODE_DECFLOAT
, /**< Decimal floating point. */
184 TYPE_CODE_MODULE
, /**< Fortran module. */
186 /* * Internal function type. */
187 TYPE_CODE_INTERNAL_FUNCTION
,
189 /* * Methods implemented in extension languages. */
193 /* * Some bits for the type's instance_flags word. See the macros
194 below for documentation on each bit. */
196 enum type_instance_flag_value
: unsigned
198 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
199 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
200 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
201 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
202 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
203 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5),
204 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
205 TYPE_INSTANCE_FLAG_RESTRICT
= (1 << 7),
206 TYPE_INSTANCE_FLAG_ATOMIC
= (1 << 8)
209 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value
, type_instance_flags
);
211 /* * Unsigned integer type. If this is not set for a TYPE_CODE_INT,
212 the type is signed (unless TYPE_NOSIGN (below) is set). */
214 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
216 /* * No sign for this type. In C++, "char", "signed char", and
217 "unsigned char" are distinct types; so we need an extra flag to
218 indicate the absence of a sign! */
220 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
222 /* * This appears in a type's flags word if it is a stub type (e.g.,
223 if someone referenced a type that wasn't defined in a source file
224 via (struct sir_not_appearing_in_this_film *)). */
226 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
228 /* * The target type of this type is a stub type, and this type needs
229 to be updated if it gets un-stubbed in check_typedef. Used for
230 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
231 based on the TYPE_LENGTH of the target type. Also, set for
232 TYPE_CODE_TYPEDEF. */
234 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
236 /* * This is a function type which appears to have a prototype. We
237 need this for function calls in order to tell us if it's necessary
238 to coerce the args, or to just do the standard conversions. This
239 is used with a short field. */
241 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
243 /* * This flag is used to indicate that processing for this type
246 (Mostly intended for HP platforms, where class methods, for
247 instance, can be encountered before their classes in the debug
248 info; the incomplete type has to be marked so that the class and
249 the method can be assigned correct types.) */
251 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
253 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
256 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
258 /* * Identify a vector type. Gcc is handling this by adding an extra
259 attribute to the array type. We slurp that in as a new flag of a
260 type. This is used only in dwarf2read.c. */
261 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
263 /* * The debugging formats (especially STABS) do not contain enough
264 information to represent all Ada types---especially those whose
265 size depends on dynamic quantities. Therefore, the GNAT Ada
266 compiler includes extra information in the form of additional type
267 definitions connected by naming conventions. This flag indicates
268 that the type is an ordinary (unencoded) GDB type that has been
269 created from the necessary run-time information, and does not need
270 further interpretation. Optionally marks ordinary, fixed-size GDB
273 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
275 /* * This debug target supports TYPE_STUB(t). In the unsupported case
276 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
277 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
278 guessed the TYPE_STUB(t) value (see dwarfread.c). */
280 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
282 /* * Not textual. By default, GDB treats all single byte integers as
283 characters (or elements of strings) unless this flag is set. */
285 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
287 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
288 address is returned by this function call. TYPE_TARGET_TYPE
289 determines the final returned function type to be presented to
292 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
294 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
295 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
296 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
298 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
299 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
300 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
302 /* * True if this type was declared using the "class" keyword. This is
303 only valid for C++ structure and enum types. If false, a structure
304 was declared as a "struct"; if true it was declared "class". For
305 enum types, this is true when "enum class" or "enum struct" was
306 used to declare the type.. */
308 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
310 /* * True if this type is a "flag" enum. A flag enum is one where all
311 the values are pairwise disjoint when "and"ed together. This
312 affects how enum values are printed. */
314 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
316 /* * True if this type is a discriminated union type. Only valid for
317 TYPE_CODE_UNION. A discriminated union stores a reference to the
318 discriminant field along with the discriminator values in a dynamic
321 #define TYPE_FLAG_DISCRIMINATED_UNION(t) \
322 (TYPE_MAIN_TYPE (t)->flag_discriminated_union)
324 /* * Constant type. If this is set, the corresponding type has a
327 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
329 /* * Volatile type. If this is set, the corresponding type has a
330 volatile modifier. */
332 #define TYPE_VOLATILE(t) \
333 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
335 /* * Restrict type. If this is set, the corresponding type has a
336 restrict modifier. */
338 #define TYPE_RESTRICT(t) \
339 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
341 /* * Atomic type. If this is set, the corresponding type has an
344 #define TYPE_ATOMIC(t) \
345 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
347 /* * True if this type represents either an lvalue or lvalue reference type. */
349 #define TYPE_IS_REFERENCE(t) \
350 (TYPE_CODE (t) == TYPE_CODE_REF || TYPE_CODE (t) == TYPE_CODE_RVALUE_REF)
352 /* * True if this type is allocatable. */
353 #define TYPE_IS_ALLOCATABLE(t) \
354 (get_dyn_prop (DYN_PROP_ALLOCATED, t) != NULL)
356 /* * Instruction-space delimited type. This is for Harvard architectures
357 which have separate instruction and data address spaces (and perhaps
360 GDB usually defines a flat address space that is a superset of the
361 architecture's two (or more) address spaces, but this is an extension
362 of the architecture's model.
364 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
365 resides in instruction memory, even if its address (in the extended
366 flat address space) does not reflect this.
368 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
369 corresponding type resides in the data memory space, even if
370 this is not indicated by its (flat address space) address.
372 If neither flag is set, the default space for functions / methods
373 is instruction space, and for data objects is data memory. */
375 #define TYPE_CODE_SPACE(t) \
376 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
378 #define TYPE_DATA_SPACE(t) \
379 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
381 /* * Address class flags. Some environments provide for pointers
382 whose size is different from that of a normal pointer or address
383 types where the bits are interpreted differently than normal
384 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
385 target specific ways to represent these different types of address
388 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
389 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
390 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
391 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
392 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
393 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
394 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
395 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
397 /* * Information needed for a discriminated union. A discriminated
398 union is handled somewhat differently from an ordinary union.
400 One field is designated as the discriminant. Only one other field
401 is active at a time; which one depends on the value of the
402 discriminant and the data in this structure.
404 Additionally, it is possible to have a univariant discriminated
405 union. In this case, the union has just a single field, which is
406 assumed to be the only active variant -- in this case no
407 discriminant is provided. */
409 struct discriminant_info
411 /* * The index of the discriminant field. If -1, then this union
412 must have just a single field. */
414 int discriminant_index
;
416 /* * The index of the default branch of the union. If -1, then
417 there is no default branch. */
421 /* * The discriminant values corresponding to each branch. This has
422 a number of entries equal to the number of fields in this union.
423 If discriminant_index is not -1, then that entry in this array is
424 not used. If default_index is not -1, then that entry in this
425 array is not used. */
427 ULONGEST discriminants
[1];
430 enum dynamic_prop_kind
432 PROP_UNDEFINED
, /* Not defined. */
433 PROP_CONST
, /* Constant. */
434 PROP_ADDR_OFFSET
, /* Address offset. */
435 PROP_LOCEXPR
, /* Location expression. */
436 PROP_LOCLIST
/* Location list. */
439 union dynamic_prop_data
441 /* Storage for constant property. */
445 /* Storage for dynamic property. */
450 /* * Used to store a dynamic property. */
454 /* Determine which field of the union dynamic_prop.data is used. */
455 enum dynamic_prop_kind kind
;
457 /* Storage for dynamic or static value. */
458 union dynamic_prop_data data
;
461 /* Compare two dynamic_prop objects for equality. dynamic_prop
462 instances are equal iff they have the same type and storage. */
463 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
465 /* Compare two dynamic_prop objects for inequality. */
466 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
471 /* * Define a type's dynamic property node kind. */
472 enum dynamic_prop_node_kind
474 /* A property providing a type's data location.
475 Evaluating this field yields to the location of an object's data. */
476 DYN_PROP_DATA_LOCATION
,
478 /* A property representing DW_AT_allocated. The presence of this attribute
479 indicates that the object of the type can be allocated/deallocated. */
482 /* A property representing DW_AT_allocated. The presence of this attribute
483 indicated that the object of the type can be associated. */
486 /* A property providing an array's byte stride. */
487 DYN_PROP_BYTE_STRIDE
,
489 /* A property holding information about a discriminated union. */
490 DYN_PROP_DISCRIMINATED
,
493 /* * List for dynamic type attributes. */
494 struct dynamic_prop_list
496 /* The kind of dynamic prop in this node. */
497 enum dynamic_prop_node_kind prop_kind
;
499 /* The dynamic property itself. */
500 struct dynamic_prop prop
;
502 /* A pointer to the next dynamic property. */
503 struct dynamic_prop_list
*next
;
506 /* * Determine which field of the union main_type.fields[x].loc is
511 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
512 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
513 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
514 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
515 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
518 /* * A discriminant to determine which field in the
519 main_type.type_specific union is being used, if any.
521 For types such as TYPE_CODE_FLT, the use of this
522 discriminant is really redundant, as we know from the type code
523 which field is going to be used. As such, it would be possible to
524 reduce the size of this enum in order to save a bit or two for
525 other fields of struct main_type. But, since we still have extra
526 room , and for the sake of clarity and consistency, we treat all fields
527 of the union the same way. */
529 enum type_specific_kind
532 TYPE_SPECIFIC_CPLUS_STUFF
,
533 TYPE_SPECIFIC_GNAT_STUFF
,
534 TYPE_SPECIFIC_FLOATFORMAT
,
535 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
537 TYPE_SPECIFIC_SELF_TYPE
542 struct objfile
*objfile
;
543 struct gdbarch
*gdbarch
;
548 /* * Position of this field, counting in bits from start of
549 containing structure. For gdbarch_bits_big_endian=1
550 targets, it is the bit offset to the MSB. For
551 gdbarch_bits_big_endian=0 targets, it is the bit offset to
559 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
560 physaddr is the location (in the target) of the static
561 field. Otherwise, physname is the mangled label of the
565 const char *physname
;
567 /* * The field location can be computed by evaluating the
568 following DWARF block. Its DATA is allocated on
569 objfile_obstack - no CU load is needed to access it. */
571 struct dwarf2_locexpr_baton
*dwarf_block
;
576 union field_location loc
;
578 /* * For a function or member type, this is 1 if the argument is
579 marked artificial. Artificial arguments should not be shown
580 to the user. For TYPE_CODE_RANGE it is set if the specific
581 bound is not defined. */
583 unsigned int artificial
: 1;
585 /* * Discriminant for union field_location. */
587 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
589 /* * Size of this field, in bits, or zero if not packed.
590 If non-zero in an array type, indicates the element size in
591 bits (used only in Ada at the moment).
592 For an unpacked field, the field's type's length
593 says how many bytes the field occupies. */
595 unsigned int bitsize
: 28;
597 /* * In a struct or union type, type of this field.
598 - In a function or member type, type of this argument.
599 - In an array type, the domain-type of the array. */
603 /* * Name of field, value or argument.
604 NULL for range bounds, array domains, and member function
612 /* * Low bound of range. */
614 struct dynamic_prop low
;
616 /* * High bound of range. */
618 struct dynamic_prop high
;
620 /* * The bias. Sometimes a range value is biased before storage.
621 The bias is added to the stored bits to form the true value. */
625 /* True if HIGH range bound contains the number of elements in the
626 subrange. This affects how the final high bound is computed. */
628 int flag_upper_bound_is_count
: 1;
630 /* True if LOW or/and HIGH are resolved into a static bound from
633 int flag_bound_evaluated
: 1;
636 /* Compare two range_bounds objects for equality. Simply does
637 memberwise comparison. */
638 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
640 /* Compare two range_bounds objects for inequality. */
641 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
648 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
649 point to cplus_struct_default, a default static instance of a
650 struct cplus_struct_type. */
652 struct cplus_struct_type
*cplus_stuff
;
654 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
655 provides additional information. */
657 struct gnat_aux_type
*gnat_stuff
;
659 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
660 floatformat object that describes the floating-point value
661 that resides within the type. */
663 const struct floatformat
*floatformat
;
665 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
667 struct func_type
*func_stuff
;
669 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
670 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
673 struct type
*self_type
;
676 /* * Main structure representing a type in GDB.
678 This structure is space-critical. Its layout has been tweaked to
679 reduce the space used. */
683 /* * Code for kind of type. */
685 ENUM_BITFIELD(type_code
) code
: 8;
687 /* * Flags about this type. These fields appear at this location
688 because they packs nicely here. See the TYPE_* macros for
689 documentation about these fields. */
691 unsigned int flag_unsigned
: 1;
692 unsigned int flag_nosign
: 1;
693 unsigned int flag_stub
: 1;
694 unsigned int flag_target_stub
: 1;
695 unsigned int flag_static
: 1;
696 unsigned int flag_prototyped
: 1;
697 unsigned int flag_incomplete
: 1;
698 unsigned int flag_varargs
: 1;
699 unsigned int flag_vector
: 1;
700 unsigned int flag_stub_supported
: 1;
701 unsigned int flag_gnu_ifunc
: 1;
702 unsigned int flag_fixed_instance
: 1;
703 unsigned int flag_objfile_owned
: 1;
705 /* * True if this type was declared with "class" rather than
708 unsigned int flag_declared_class
: 1;
710 /* * True if this is an enum type with disjoint values. This
711 affects how the enum is printed. */
713 unsigned int flag_flag_enum
: 1;
715 /* * True if this type is a discriminated union type. Only valid
716 for TYPE_CODE_UNION. A discriminated union stores a reference to
717 the discriminant field along with the discriminator values in a
720 unsigned int flag_discriminated_union
: 1;
722 /* * A discriminant telling us which field of the type_specific
723 union is being used for this type, if any. */
725 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
727 /* * Number of fields described for this type. This field appears
728 at this location because it packs nicely here. */
732 /* * Name of this type, or NULL if none.
734 This is used for printing only. For looking up a name, look for
735 a symbol in the VAR_DOMAIN. This is generally allocated in the
736 objfile's obstack. However coffread.c uses malloc. */
740 /* * Every type is now associated with a particular objfile, and the
741 type is allocated on the objfile_obstack for that objfile. One
742 problem however, is that there are times when gdb allocates new
743 types while it is not in the process of reading symbols from a
744 particular objfile. Fortunately, these happen when the type
745 being created is a derived type of an existing type, such as in
746 lookup_pointer_type(). So we can just allocate the new type
747 using the same objfile as the existing type, but to do this we
748 need a backpointer to the objfile from the existing type. Yes
749 this is somewhat ugly, but without major overhaul of the internal
750 type system, it can't be avoided for now. */
752 union type_owner owner
;
754 /* * For a pointer type, describes the type of object pointed to.
755 - For an array type, describes the type of the elements.
756 - For a function or method type, describes the type of the return value.
757 - For a range type, describes the type of the full range.
758 - For a complex type, describes the type of each coordinate.
759 - For a special record or union type encoding a dynamic-sized type
760 in GNAT, a memoized pointer to a corresponding static version of
762 - Unused otherwise. */
764 struct type
*target_type
;
766 /* * For structure and union types, a description of each field.
767 For set and pascal array types, there is one "field",
768 whose type is the domain type of the set or array.
769 For range types, there are two "fields",
770 the minimum and maximum values (both inclusive).
771 For enum types, each possible value is described by one "field".
772 For a function or method type, a "field" for each parameter.
773 For C++ classes, there is one field for each base class (if it is
774 a derived class) plus one field for each class data member. Member
775 functions are recorded elsewhere.
777 Using a pointer to a separate array of fields
778 allows all types to have the same size, which is useful
779 because we can allocate the space for a type before
780 we know what to put in it. */
784 struct field
*fields
;
786 /* * Union member used for range types. */
788 struct range_bounds
*bounds
;
792 /* * Slot to point to additional language-specific fields of this
795 union type_specific type_specific
;
797 /* * Contains all dynamic type properties. */
798 struct dynamic_prop_list
*dyn_prop_list
;
801 /* * Number of bits allocated for alignment. */
803 #define TYPE_ALIGN_BITS 8
805 /* * A ``struct type'' describes a particular instance of a type, with
806 some particular qualification. */
810 /* * Type that is a pointer to this type.
811 NULL if no such pointer-to type is known yet.
812 The debugger may add the address of such a type
813 if it has to construct one later. */
815 struct type
*pointer_type
;
817 /* * C++: also need a reference type. */
819 struct type
*reference_type
;
821 /* * A C++ rvalue reference type added in C++11. */
823 struct type
*rvalue_reference_type
;
825 /* * Variant chain. This points to a type that differs from this
826 one only in qualifiers and length. Currently, the possible
827 qualifiers are const, volatile, code-space, data-space, and
828 address class. The length may differ only when one of the
829 address class flags are set. The variants are linked in a
830 circular ring and share MAIN_TYPE. */
834 /* * The alignment for this type. Zero means that the alignment was
835 not specified in the debug info. Note that this is stored in a
836 funny way: as the log base 2 (plus 1) of the alignment; so a
837 value of 1 means the alignment is 1, and a value of 9 means the
840 unsigned align_log2
: TYPE_ALIGN_BITS
;
842 /* * Flags specific to this instance of the type, indicating where
845 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
846 binary or-ed with the target type, with a special case for
847 address class and space class. For example if this typedef does
848 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
849 instance flags are completely inherited from the target type. No
850 qualifiers can be cleared by the typedef. See also
852 unsigned instance_flags
: 9;
854 /* * Length of storage for a value of this type. The value is the
855 expression in host bytes of what sizeof(type) would return. This
856 size includes padding. For example, an i386 extended-precision
857 floating point value really only occupies ten bytes, but most
858 ABI's declare its size to be 12 bytes, to preserve alignment.
859 A `struct type' representing such a floating-point type would
860 have a `length' value of 12, even though the last two bytes are
863 Since this field is expressed in host bytes, its value is appropriate
864 to pass to memcpy and such (it is assumed that GDB itself always runs
865 on an 8-bits addressable architecture). However, when using it for
866 target address arithmetic (e.g. adding it to a target address), the
867 type_length_units function should be used in order to get the length
868 expressed in target addressable memory units. */
872 /* * Core type, shared by a group of qualified types. */
874 struct main_type
*main_type
;
877 #define NULL_TYPE ((struct type *) 0)
882 /* * The overloaded name.
883 This is generally allocated in the objfile's obstack.
884 However stabsread.c sometimes uses malloc. */
888 /* * The number of methods with this name. */
892 /* * The list of methods. */
894 struct fn_field
*fn_fields
;
901 /* * If is_stub is clear, this is the mangled name which we can look
902 up to find the address of the method (FIXME: it would be cleaner
903 to have a pointer to the struct symbol here instead).
905 If is_stub is set, this is the portion of the mangled name which
906 specifies the arguments. For example, "ii", if there are two int
907 arguments, or "" if there are no arguments. See gdb_mangle_name
908 for the conversion from this format to the one used if is_stub is
911 const char *physname
;
913 /* * The function type for the method.
915 (This comment used to say "The return value of the method", but
916 that's wrong. The function type is expected here, i.e. something
917 with TYPE_CODE_METHOD, and *not* the return-value type). */
921 /* * For virtual functions. First baseclass that defines this
924 struct type
*fcontext
;
928 unsigned int is_const
:1;
929 unsigned int is_volatile
:1;
930 unsigned int is_private
:1;
931 unsigned int is_protected
:1;
932 unsigned int is_artificial
:1;
934 /* * A stub method only has some fields valid (but they are enough
935 to reconstruct the rest of the fields). */
937 unsigned int is_stub
:1;
939 /* * True if this function is a constructor, false otherwise. */
941 unsigned int is_constructor
: 1;
945 unsigned int dummy
:9;
947 /* * Index into that baseclass's virtual function table, minus 2;
948 else if static: VOFFSET_STATIC; else: 0. */
950 unsigned int voffset
:16;
952 #define VOFFSET_STATIC 1
958 /* * Unqualified name to be prefixed by owning class qualified
963 /* * Type this typedef named NAME represents. */
967 /* * True if this field was declared protected, false otherwise. */
968 unsigned int is_protected
: 1;
970 /* * True if this field was declared private, false otherwise. */
971 unsigned int is_private
: 1;
974 /* * C++ language-specific information for TYPE_CODE_STRUCT and
975 TYPE_CODE_UNION nodes. */
977 struct cplus_struct_type
979 /* * Number of base classes this type derives from. The
980 baseclasses are stored in the first N_BASECLASSES fields
981 (i.e. the `fields' field of the struct type). The only fields
982 of struct field that are used are: type, name, loc.bitpos. */
986 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
987 All access to this field must be through TYPE_VPTR_FIELDNO as one
988 thing it does is check whether the field has been initialized.
989 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
990 which for portability reasons doesn't initialize this field.
991 TYPE_VPTR_FIELDNO returns -1 for this case.
993 If -1, we were unable to find the virtual function table pointer in
994 initial symbol reading, and get_vptr_fieldno should be called to find
995 it if possible. get_vptr_fieldno will update this field if possible.
996 Otherwise the value is left at -1.
998 Unused if this type does not have virtual functions. */
1002 /* * Number of methods with unique names. All overloaded methods
1003 with the same name count only once. */
1007 /* * Number of template arguments. */
1009 unsigned short n_template_arguments
;
1011 /* * One if this struct is a dynamic class, as defined by the
1012 Itanium C++ ABI: if it requires a virtual table pointer,
1013 because it or any of its base classes have one or more virtual
1014 member functions or virtual base classes. Minus one if not
1015 dynamic. Zero if not yet computed. */
1019 /* * The base class which defined the virtual function table pointer. */
1021 struct type
*vptr_basetype
;
1023 /* * For derived classes, the number of base classes is given by
1024 n_baseclasses and virtual_field_bits is a bit vector containing
1025 one bit per base class. If the base class is virtual, the
1026 corresponding bit will be set.
1031 class C : public B, public virtual A {};
1033 B is a baseclass of C; A is a virtual baseclass for C.
1034 This is a C++ 2.0 language feature. */
1036 B_TYPE
*virtual_field_bits
;
1038 /* * For classes with private fields, the number of fields is
1039 given by nfields and private_field_bits is a bit vector
1040 containing one bit per field.
1042 If the field is private, the corresponding bit will be set. */
1044 B_TYPE
*private_field_bits
;
1046 /* * For classes with protected fields, the number of fields is
1047 given by nfields and protected_field_bits is a bit vector
1048 containing one bit per field.
1050 If the field is private, the corresponding bit will be set. */
1052 B_TYPE
*protected_field_bits
;
1054 /* * For classes with fields to be ignored, either this is
1055 optimized out or this field has length 0. */
1057 B_TYPE
*ignore_field_bits
;
1059 /* * For classes, structures, and unions, a description of each
1060 field, which consists of an overloaded name, followed by the
1061 types of arguments that the method expects, and then the name
1062 after it has been renamed to make it distinct.
1064 fn_fieldlists points to an array of nfn_fields of these. */
1066 struct fn_fieldlist
*fn_fieldlists
;
1068 /* * typedefs defined inside this class. typedef_field points to
1069 an array of typedef_field_count elements. */
1071 struct decl_field
*typedef_field
;
1073 unsigned typedef_field_count
;
1075 /* * The nested types defined by this type. nested_types points to
1076 an array of nested_types_count elements. */
1078 struct decl_field
*nested_types
;
1080 unsigned nested_types_count
;
1082 /* * The template arguments. This is an array with
1083 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1086 struct symbol
**template_arguments
;
1089 /* * Struct used to store conversion rankings. */
1095 /* * When two conversions are of the same type and therefore have
1096 the same rank, subrank is used to differentiate the two.
1098 Eg: Two derived-class-pointer to base-class-pointer conversions
1099 would both have base pointer conversion rank, but the
1100 conversion with the shorter distance to the ancestor is
1101 preferable. 'subrank' would be used to reflect that. */
1106 /* * Used for ranking a function for overload resolution. */
1108 typedef std::vector
<rank
> badness_vector
;
1110 /* * GNAT Ada-specific information for various Ada types. */
1112 struct gnat_aux_type
1114 /* * Parallel type used to encode information about dynamic types
1115 used in Ada (such as variant records, variable-size array,
1117 struct type
* descriptive_type
;
1120 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1124 /* * The calling convention for targets supporting multiple ABIs.
1125 Right now this is only fetched from the Dwarf-2
1126 DW_AT_calling_convention attribute. The value is one of the
1127 DW_CC enum dwarf_calling_convention constants. */
1129 unsigned calling_convention
: 8;
1131 /* * Whether this function normally returns to its caller. It is
1132 set from the DW_AT_noreturn attribute if set on the
1133 DW_TAG_subprogram. */
1135 unsigned int is_noreturn
: 1;
1137 /* * Only those DW_TAG_call_site's in this function that have
1138 DW_AT_call_tail_call set are linked in this list. Function
1139 without its tail call list complete
1140 (DW_AT_call_all_tail_calls or its superset
1141 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1142 DW_TAG_call_site's exist in such function. */
1144 struct call_site
*tail_call_list
;
1146 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1147 contains the method. */
1149 struct type
*self_type
;
1152 /* struct call_site_parameter can be referenced in callees by several ways. */
1154 enum call_site_parameter_kind
1156 /* * Use field call_site_parameter.u.dwarf_reg. */
1157 CALL_SITE_PARAMETER_DWARF_REG
,
1159 /* * Use field call_site_parameter.u.fb_offset. */
1160 CALL_SITE_PARAMETER_FB_OFFSET
,
1162 /* * Use field call_site_parameter.u.param_offset. */
1163 CALL_SITE_PARAMETER_PARAM_OFFSET
1166 struct call_site_target
1168 union field_location loc
;
1170 /* * Discriminant for union field_location. */
1172 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1175 union call_site_parameter_u
1177 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1178 as DWARF register number, for register passed
1183 /* * Offset from the callee's frame base, for stack passed
1184 parameters. This equals offset from the caller's stack
1187 CORE_ADDR fb_offset
;
1189 /* * Offset relative to the start of this PER_CU to
1190 DW_TAG_formal_parameter which is referenced by both
1191 caller and the callee. */
1193 cu_offset param_cu_off
;
1196 struct call_site_parameter
1198 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1200 union call_site_parameter_u u
;
1202 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1204 const gdb_byte
*value
;
1207 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1208 It may be NULL if not provided by DWARF. */
1210 const gdb_byte
*data_value
;
1211 size_t data_value_size
;
1214 /* * A place where a function gets called from, represented by
1215 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1219 /* * Address of the first instruction after this call. It must be
1220 the first field as we overload core_addr_hash and core_addr_eq
1225 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1227 struct call_site
*tail_call_next
;
1229 /* * Describe DW_AT_call_target. Missing attribute uses
1230 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1232 struct call_site_target target
;
1234 /* * Size of the PARAMETER array. */
1236 unsigned parameter_count
;
1238 /* * CU of the function where the call is located. It gets used
1239 for DWARF blocks execution in the parameter array below. */
1241 struct dwarf2_per_cu_data
*per_cu
;
1243 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1245 struct call_site_parameter parameter
[1];
1248 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1249 static structure. */
1251 extern const struct cplus_struct_type cplus_struct_default
;
1253 extern void allocate_cplus_struct_type (struct type
*);
1255 #define INIT_CPLUS_SPECIFIC(type) \
1256 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1257 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1258 &cplus_struct_default)
1260 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1262 #define HAVE_CPLUS_STRUCT(type) \
1263 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1264 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1266 #define INIT_NONE_SPECIFIC(type) \
1267 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1268 TYPE_MAIN_TYPE (type)->type_specific = {})
1270 extern const struct gnat_aux_type gnat_aux_default
;
1272 extern void allocate_gnat_aux_type (struct type
*);
1274 #define INIT_GNAT_SPECIFIC(type) \
1275 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1276 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1277 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1278 /* * A macro that returns non-zero if the type-specific data should be
1279 read as "gnat-stuff". */
1280 #define HAVE_GNAT_AUX_INFO(type) \
1281 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1283 /* * True if TYPE is known to be an Ada type of some kind. */
1284 #define ADA_TYPE_P(type) \
1285 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1286 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1287 && TYPE_FIXED_INSTANCE (type)))
1289 #define INIT_FUNC_SPECIFIC(type) \
1290 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1291 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1292 TYPE_ZALLOC (type, \
1293 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1295 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1296 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1297 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
1298 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1299 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1300 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1301 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1302 #define TYPE_CHAIN(thistype) (thistype)->chain
1303 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1304 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1305 so you only have to call check_typedef once. Since allocate_value
1306 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1307 #define TYPE_LENGTH(thistype) (thistype)->length
1309 /* * Return the alignment of the type in target addressable memory
1310 units, or 0 if no alignment was specified. */
1311 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1313 /* * Return the alignment of the type in target addressable memory
1314 units, or 0 if no alignment was specified. */
1315 extern unsigned type_raw_align (struct type
*);
1317 /* * Return the alignment of the type in target addressable memory
1318 units. Return 0 if the alignment cannot be determined; but note
1319 that this makes an effort to compute the alignment even it it was
1320 not specified in the debug info. */
1321 extern unsigned type_align (struct type
*);
1323 /* * Set the alignment of the type. The alignment must be a power of
1324 2. Returns false if the given value does not fit in the available
1325 space in struct type. */
1326 extern bool set_type_align (struct type
*, ULONGEST
);
1328 /* * Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
1329 type, you need to do TYPE_CODE (check_type (this_type)). */
1330 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
1331 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
1332 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
1334 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1335 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1336 #define TYPE_LOW_BOUND(range_type) \
1337 TYPE_RANGE_DATA(range_type)->low.data.const_val
1338 #define TYPE_HIGH_BOUND(range_type) \
1339 TYPE_RANGE_DATA(range_type)->high.data.const_val
1340 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1341 (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
1342 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1343 (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
1344 #define TYPE_HIGH_BOUND_KIND(range_type) \
1345 TYPE_RANGE_DATA(range_type)->high.kind
1346 #define TYPE_LOW_BOUND_KIND(range_type) \
1347 TYPE_RANGE_DATA(range_type)->low.kind
1349 /* Property accessors for the type data location. */
1350 #define TYPE_DATA_LOCATION(thistype) \
1351 get_dyn_prop (DYN_PROP_DATA_LOCATION, thistype)
1352 #define TYPE_DATA_LOCATION_BATON(thistype) \
1353 TYPE_DATA_LOCATION (thistype)->data.baton
1354 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1355 TYPE_DATA_LOCATION (thistype)->data.const_val
1356 #define TYPE_DATA_LOCATION_KIND(thistype) \
1357 TYPE_DATA_LOCATION (thistype)->kind
1359 /* Property accessors for the type allocated/associated. */
1360 #define TYPE_ALLOCATED_PROP(thistype) \
1361 get_dyn_prop (DYN_PROP_ALLOCATED, thistype)
1362 #define TYPE_ASSOCIATED_PROP(thistype) \
1363 get_dyn_prop (DYN_PROP_ASSOCIATED, thistype)
1365 /* Attribute accessors for dynamic properties. */
1366 #define TYPE_DYN_PROP_LIST(thistype) \
1367 TYPE_MAIN_TYPE(thistype)->dyn_prop_list
1368 #define TYPE_DYN_PROP_BATON(dynprop) \
1370 #define TYPE_DYN_PROP_ADDR(dynprop) \
1371 dynprop->data.const_val
1372 #define TYPE_DYN_PROP_KIND(dynprop) \
1376 /* Accessors for struct range_bounds data attached to an array type's
1379 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1380 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1381 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1382 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1384 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1385 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1387 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1388 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1392 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1393 /* Do not call this, use TYPE_SELF_TYPE. */
1394 extern struct type
*internal_type_self_type (struct type
*);
1395 extern void set_type_self_type (struct type
*, struct type
*);
1397 extern int internal_type_vptr_fieldno (struct type
*);
1398 extern void set_type_vptr_fieldno (struct type
*, int);
1399 extern struct type
*internal_type_vptr_basetype (struct type
*);
1400 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1401 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1402 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1404 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1405 #define TYPE_SPECIFIC_FIELD(thistype) \
1406 TYPE_MAIN_TYPE(thistype)->type_specific_field
1407 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1408 where we're trying to print an Ada array using the C language.
1409 In that case, there is no "cplus_stuff", but the C language assumes
1410 that there is. What we do, in that case, is pretend that there is
1411 an implicit one which is the default cplus stuff. */
1412 #define TYPE_CPLUS_SPECIFIC(thistype) \
1413 (!HAVE_CPLUS_STRUCT(thistype) \
1414 ? (struct cplus_struct_type*)&cplus_struct_default \
1415 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1416 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1417 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1418 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1419 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1420 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1421 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1422 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1423 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1424 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1425 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1426 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1427 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1428 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1429 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1431 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1432 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1433 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1435 #define FIELD_TYPE(thisfld) ((thisfld).type)
1436 #define FIELD_NAME(thisfld) ((thisfld).name)
1437 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1438 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1439 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1440 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1441 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1442 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1443 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1444 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1445 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1446 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1447 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1448 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1449 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1450 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1451 #define SET_FIELD_PHYSNAME(thisfld, name) \
1452 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1453 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1454 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1455 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1456 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1457 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1458 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1459 FIELD_DWARF_BLOCK (thisfld) = (addr))
1460 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1461 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1463 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1464 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1465 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1466 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1467 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1468 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL (TYPE_FIELD (thistype, n))
1469 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1470 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1471 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1472 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1473 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1474 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1476 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1477 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1478 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1479 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1480 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1481 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1482 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1483 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1484 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1485 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1486 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1487 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1488 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1489 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1490 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1491 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1492 #define TYPE_FIELD_PRIVATE(thistype, n) \
1493 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1494 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1495 #define TYPE_FIELD_PROTECTED(thistype, n) \
1496 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1497 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1498 #define TYPE_FIELD_IGNORE(thistype, n) \
1499 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1500 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1501 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1502 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1503 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1505 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1506 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1507 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1508 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1509 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1511 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1512 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1513 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1514 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1515 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1516 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1518 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1519 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1520 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1521 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1522 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1523 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1524 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1525 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1526 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1527 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1528 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1529 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1530 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1531 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1532 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1534 /* Accessors for typedefs defined by a class. */
1535 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1536 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1537 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1538 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1539 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1540 TYPE_TYPEDEF_FIELD (thistype, n).name
1541 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1542 TYPE_TYPEDEF_FIELD (thistype, n).type
1543 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1544 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1545 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1546 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1547 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1548 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1550 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1551 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1552 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1553 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1554 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1555 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1556 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1557 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1558 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1559 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1560 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1561 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1562 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1563 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1565 #define TYPE_IS_OPAQUE(thistype) \
1566 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1567 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1568 && (TYPE_NFIELDS (thistype) == 0) \
1569 && (!HAVE_CPLUS_STRUCT (thistype) \
1570 || TYPE_NFN_FIELDS (thistype) == 0) \
1571 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1573 /* * A helper macro that returns the name of a type or "unnamed type"
1574 if the type has no name. */
1576 #define TYPE_SAFE_NAME(type) \
1577 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>"))
1579 /* * A helper macro that returns the name of an error type. If the
1580 type has a name, it is used; otherwise, a default is used. */
1582 #define TYPE_ERROR_NAME(type) \
1583 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1585 /* Given TYPE, return its floatformat. */
1586 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1590 /* Integral types. */
1592 /* Implicit size/sign (based on the architecture's ABI). */
1593 struct type
*builtin_void
;
1594 struct type
*builtin_char
;
1595 struct type
*builtin_short
;
1596 struct type
*builtin_int
;
1597 struct type
*builtin_long
;
1598 struct type
*builtin_signed_char
;
1599 struct type
*builtin_unsigned_char
;
1600 struct type
*builtin_unsigned_short
;
1601 struct type
*builtin_unsigned_int
;
1602 struct type
*builtin_unsigned_long
;
1603 struct type
*builtin_half
;
1604 struct type
*builtin_float
;
1605 struct type
*builtin_double
;
1606 struct type
*builtin_long_double
;
1607 struct type
*builtin_complex
;
1608 struct type
*builtin_double_complex
;
1609 struct type
*builtin_string
;
1610 struct type
*builtin_bool
;
1611 struct type
*builtin_long_long
;
1612 struct type
*builtin_unsigned_long_long
;
1613 struct type
*builtin_decfloat
;
1614 struct type
*builtin_decdouble
;
1615 struct type
*builtin_declong
;
1617 /* "True" character types.
1618 We use these for the '/c' print format, because c_char is just a
1619 one-byte integral type, which languages less laid back than C
1620 will print as ... well, a one-byte integral type. */
1621 struct type
*builtin_true_char
;
1622 struct type
*builtin_true_unsigned_char
;
1624 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1625 is for when an architecture needs to describe a register that has
1627 struct type
*builtin_int0
;
1628 struct type
*builtin_int8
;
1629 struct type
*builtin_uint8
;
1630 struct type
*builtin_int16
;
1631 struct type
*builtin_uint16
;
1632 struct type
*builtin_int24
;
1633 struct type
*builtin_uint24
;
1634 struct type
*builtin_int32
;
1635 struct type
*builtin_uint32
;
1636 struct type
*builtin_int64
;
1637 struct type
*builtin_uint64
;
1638 struct type
*builtin_int128
;
1639 struct type
*builtin_uint128
;
1641 /* Wide character types. */
1642 struct type
*builtin_char16
;
1643 struct type
*builtin_char32
;
1644 struct type
*builtin_wchar
;
1646 /* Pointer types. */
1648 /* * `pointer to data' type. Some target platforms use an implicitly
1649 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1650 struct type
*builtin_data_ptr
;
1652 /* * `pointer to function (returning void)' type. Harvard
1653 architectures mean that ABI function and code pointers are not
1654 interconvertible. Similarly, since ANSI, C standards have
1655 explicitly said that pointers to functions and pointers to data
1656 are not interconvertible --- that is, you can't cast a function
1657 pointer to void * and back, and expect to get the same value.
1658 However, all function pointer types are interconvertible, so void
1659 (*) () can server as a generic function pointer. */
1661 struct type
*builtin_func_ptr
;
1663 /* * `function returning pointer to function (returning void)' type.
1664 The final void return type is not significant for it. */
1666 struct type
*builtin_func_func
;
1668 /* Special-purpose types. */
1670 /* * This type is used to represent a GDB internal function. */
1672 struct type
*internal_fn
;
1674 /* * This type is used to represent an xmethod. */
1675 struct type
*xmethod
;
1678 /* * Return the type table for the specified architecture. */
1680 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1682 /* * Per-objfile types used by symbol readers. */
1686 /* Basic types based on the objfile architecture. */
1687 struct type
*builtin_void
;
1688 struct type
*builtin_char
;
1689 struct type
*builtin_short
;
1690 struct type
*builtin_int
;
1691 struct type
*builtin_long
;
1692 struct type
*builtin_long_long
;
1693 struct type
*builtin_signed_char
;
1694 struct type
*builtin_unsigned_char
;
1695 struct type
*builtin_unsigned_short
;
1696 struct type
*builtin_unsigned_int
;
1697 struct type
*builtin_unsigned_long
;
1698 struct type
*builtin_unsigned_long_long
;
1699 struct type
*builtin_half
;
1700 struct type
*builtin_float
;
1701 struct type
*builtin_double
;
1702 struct type
*builtin_long_double
;
1704 /* * This type is used to represent symbol addresses. */
1705 struct type
*builtin_core_addr
;
1707 /* * This type represents a type that was unrecognized in symbol
1709 struct type
*builtin_error
;
1711 /* * Types used for symbols with no debug information. */
1712 struct type
*nodebug_text_symbol
;
1713 struct type
*nodebug_text_gnu_ifunc_symbol
;
1714 struct type
*nodebug_got_plt_symbol
;
1715 struct type
*nodebug_data_symbol
;
1716 struct type
*nodebug_unknown_symbol
;
1717 struct type
*nodebug_tls_symbol
;
1720 /* * Return the type table for the specified objfile. */
1722 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1724 /* Explicit floating-point formats. See "floatformat.h". */
1725 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1726 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1727 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1728 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1729 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1730 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1731 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1732 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1733 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1734 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1735 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1736 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1739 /* Allocate space for storing data associated with a particular
1740 type. We ensure that the space is allocated using the same
1741 mechanism that was used to allocate the space for the type
1742 structure itself. I.e. if the type is on an objfile's
1743 objfile_obstack, then the space for data associated with that type
1744 will also be allocated on the objfile_obstack. If the type is
1745 associated with a gdbarch, then the space for data associated with that
1746 type will also be allocated on the gdbarch_obstack.
1748 If a type is not associated with neither an objfile or a gdbarch then
1749 you should not use this macro to allocate space for data, instead you
1750 should call xmalloc directly, and ensure the memory is correctly freed
1751 when it is no longer needed. */
1753 #define TYPE_ALLOC(t,size) \
1754 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
1755 ? &TYPE_OBJFILE (t)->objfile_obstack \
1756 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
1760 /* See comment on TYPE_ALLOC. */
1762 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
1764 /* Use alloc_type to allocate a type owned by an objfile. Use
1765 alloc_type_arch to allocate a type owned by an architecture. Use
1766 alloc_type_copy to allocate a type with the same owner as a
1767 pre-existing template type, no matter whether objfile or
1769 extern struct type
*alloc_type (struct objfile
*);
1770 extern struct type
*alloc_type_arch (struct gdbarch
*);
1771 extern struct type
*alloc_type_copy (const struct type
*);
1773 /* * Return the type's architecture. For types owned by an
1774 architecture, that architecture is returned. For types owned by an
1775 objfile, that objfile's architecture is returned. */
1777 extern struct gdbarch
*get_type_arch (const struct type
*);
1779 /* * This returns the target type (or NULL) of TYPE, also skipping
1782 extern struct type
*get_target_type (struct type
*type
);
1784 /* Return the equivalent of TYPE_LENGTH, but in number of target
1785 addressable memory units of the associated gdbarch instead of bytes. */
1787 extern unsigned int type_length_units (struct type
*type
);
1789 /* * Helper function to construct objfile-owned types. */
1791 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
1793 extern struct type
*init_integer_type (struct objfile
*, int, int,
1795 extern struct type
*init_character_type (struct objfile
*, int, int,
1797 extern struct type
*init_boolean_type (struct objfile
*, int, int,
1799 extern struct type
*init_float_type (struct objfile
*, int, const char *,
1800 const struct floatformat
**);
1801 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
1802 extern struct type
*init_complex_type (struct objfile
*, const char *,
1804 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
1807 /* Helper functions to construct architecture-owned types. */
1808 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
1810 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
1812 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
1814 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
1816 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
1817 const struct floatformat
**);
1818 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
1819 extern struct type
*arch_complex_type (struct gdbarch
*, const char *,
1821 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
1824 /* Helper functions to construct a struct or record type. An
1825 initially empty type is created using arch_composite_type().
1826 Fields are then added using append_composite_type_field*(). A union
1827 type has its size set to the largest field. A struct type has each
1828 field packed against the previous. */
1830 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1831 const char *name
, enum type_code code
);
1832 extern void append_composite_type_field (struct type
*t
, const char *name
,
1833 struct type
*field
);
1834 extern void append_composite_type_field_aligned (struct type
*t
,
1838 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
1839 struct type
*field
);
1841 /* Helper functions to construct a bit flags type. An initially empty
1842 type is created using arch_flag_type(). Flags are then added using
1843 append_flag_type_field() and append_flag_type_flag(). */
1844 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1845 const char *name
, int bit
);
1846 extern void append_flags_type_field (struct type
*type
,
1847 int start_bitpos
, int nr_bits
,
1848 struct type
*field_type
, const char *name
);
1849 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
1852 extern void make_vector_type (struct type
*array_type
);
1853 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
1855 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
1856 extern struct type
*lookup_lvalue_reference_type (struct type
*);
1857 extern struct type
*lookup_rvalue_reference_type (struct type
*);
1860 extern struct type
*make_reference_type (struct type
*, struct type
**,
1863 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
1865 extern struct type
*make_restrict_type (struct type
*);
1867 extern struct type
*make_unqualified_type (struct type
*);
1869 extern struct type
*make_atomic_type (struct type
*);
1871 extern void replace_type (struct type
*, struct type
*);
1873 extern int address_space_name_to_int (struct gdbarch
*, const char *);
1875 extern const char *address_space_int_to_name (struct gdbarch
*, int);
1877 extern struct type
*make_type_with_address_space (struct type
*type
,
1878 int space_identifier
);
1880 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
1882 extern struct type
*lookup_methodptr_type (struct type
*);
1884 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
1885 struct type
*to_type
, struct field
*args
,
1886 int nargs
, int varargs
);
1888 extern void smash_to_memberptr_type (struct type
*, struct type
*,
1891 extern void smash_to_methodptr_type (struct type
*, struct type
*);
1893 extern struct type
*allocate_stub_method (struct type
*);
1895 extern const char *type_name_or_error (struct type
*type
);
1899 /* The field of the element, or NULL if no element was found. */
1900 struct field
*field
;
1902 /* The bit offset of the element in the parent structure. */
1906 /* Given a type TYPE, lookup the field and offset of the component named
1909 TYPE can be either a struct or union, or a pointer or reference to
1910 a struct or union. If it is a pointer or reference, its target
1911 type is automatically used. Thus '.' and '->' are interchangable,
1912 as specified for the definitions of the expression element types
1913 STRUCTOP_STRUCT and STRUCTOP_PTR.
1915 If NOERR is nonzero, the returned structure will have field set to
1916 NULL if there is no component named NAME.
1918 If the component NAME is a field in an anonymous substructure of
1919 TYPE, the returned offset is a "global" offset relative to TYPE
1920 rather than an offset within the substructure. */
1922 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
1924 /* Given a type TYPE, lookup the type of the component named NAME.
1926 TYPE can be either a struct or union, or a pointer or reference to
1927 a struct or union. If it is a pointer or reference, its target
1928 type is automatically used. Thus '.' and '->' are interchangable,
1929 as specified for the definitions of the expression element types
1930 STRUCTOP_STRUCT and STRUCTOP_PTR.
1932 If NOERR is nonzero, return NULL if there is no component named
1935 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
1937 extern struct type
*make_pointer_type (struct type
*, struct type
**);
1939 extern struct type
*lookup_pointer_type (struct type
*);
1941 extern struct type
*make_function_type (struct type
*, struct type
**);
1943 extern struct type
*lookup_function_type (struct type
*);
1945 extern struct type
*lookup_function_type_with_arguments (struct type
*,
1949 extern struct type
*create_static_range_type (struct type
*, struct type
*,
1953 extern struct type
*create_array_type_with_stride
1954 (struct type
*, struct type
*, struct type
*,
1955 struct dynamic_prop
*, unsigned int);
1957 extern struct type
*create_range_type (struct type
*, struct type
*,
1958 const struct dynamic_prop
*,
1959 const struct dynamic_prop
*,
1962 extern struct type
*create_array_type (struct type
*, struct type
*,
1965 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
1967 extern struct type
*create_string_type (struct type
*, struct type
*,
1969 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
1971 extern struct type
*create_set_type (struct type
*, struct type
*);
1973 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
1974 struct gdbarch
*, const char *);
1976 extern struct type
*lookup_signed_typename (const struct language_defn
*,
1977 struct gdbarch
*, const char *);
1979 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
1981 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
1983 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
1984 ADDR specifies the location of the variable the type is bound to.
1985 If TYPE has no dynamic properties return TYPE; otherwise a new type with
1986 static properties is returned. */
1987 extern struct type
*resolve_dynamic_type (struct type
*type
,
1988 const gdb_byte
*valaddr
,
1991 /* * Predicate if the type has dynamic values, which are not resolved yet. */
1992 extern int is_dynamic_type (struct type
*type
);
1994 /* * Return the dynamic property of the requested KIND from TYPE's
1995 list of dynamic properties. */
1996 extern struct dynamic_prop
*get_dyn_prop
1997 (enum dynamic_prop_node_kind kind
, const struct type
*type
);
1999 /* * Given a dynamic property PROP of a given KIND, add this dynamic
2000 property to the given TYPE.
2002 This function assumes that TYPE is objfile-owned. */
2003 extern void add_dyn_prop
2004 (enum dynamic_prop_node_kind kind
, struct dynamic_prop prop
,
2007 extern void remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2010 extern struct type
*check_typedef (struct type
*);
2012 extern void check_stub_method_group (struct type
*, int);
2014 extern char *gdb_mangle_name (struct type
*, int, int);
2016 extern struct type
*lookup_typename (const struct language_defn
*,
2017 struct gdbarch
*, const char *,
2018 const struct block
*, int);
2020 extern struct type
*lookup_template_type (const char *, struct type
*,
2021 const struct block
*);
2023 extern int get_vptr_fieldno (struct type
*, struct type
**);
2025 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2027 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2028 LONGEST
*high_bound
);
2030 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2032 extern int class_types_same_p (const struct type
*, const struct type
*);
2034 extern int is_ancestor (struct type
*, struct type
*);
2036 extern int is_public_ancestor (struct type
*, struct type
*);
2038 extern int is_unique_ancestor (struct type
*, struct value
*);
2040 /* Overload resolution */
2042 /* * Badness if parameter list length doesn't match arg list length. */
2043 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2045 /* * Dummy badness value for nonexistent parameter positions. */
2046 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2047 /* * Badness if no conversion among types. */
2048 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2050 /* * Badness of an exact match. */
2051 extern const struct rank EXACT_MATCH_BADNESS
;
2053 /* * Badness of integral promotion. */
2054 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2055 /* * Badness of floating promotion. */
2056 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2057 /* * Badness of converting a derived class pointer
2058 to a base class pointer. */
2059 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2060 /* * Badness of integral conversion. */
2061 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2062 /* * Badness of floating conversion. */
2063 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2064 /* * Badness of integer<->floating conversions. */
2065 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2066 /* * Badness of conversion of pointer to void pointer. */
2067 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2068 /* * Badness of conversion to boolean. */
2069 extern const struct rank BOOL_CONVERSION_BADNESS
;
2070 /* * Badness of converting derived to base class. */
2071 extern const struct rank BASE_CONVERSION_BADNESS
;
2072 /* * Badness of converting from non-reference to reference. Subrank
2073 is the type of reference conversion being done. */
2074 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2075 /* * Conversion to rvalue reference. */
2076 #define REFERENCE_CONVERSION_RVALUE 1
2077 /* * Conversion to const lvalue reference. */
2078 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2080 /* * Badness of converting integer 0 to NULL pointer. */
2081 extern const struct rank NULL_POINTER_CONVERSION
;
2082 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2084 extern const struct rank CV_CONVERSION_BADNESS
;
2085 #define CV_CONVERSION_CONST 1
2086 #define CV_CONVERSION_VOLATILE 2
2088 /* Non-standard conversions allowed by the debugger */
2090 /* * Converting a pointer to an int is usually OK. */
2091 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2093 /* * Badness of converting a (non-zero) integer constant
2095 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2097 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2098 extern int compare_ranks (struct rank a
, struct rank b
);
2100 extern int compare_badness (const badness_vector
&,
2101 const badness_vector
&);
2103 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2104 gdb::array_view
<value
*> args
);
2106 extern struct rank
rank_one_type (struct type
*, struct type
*,
2109 extern void recursive_dump_type (struct type
*, int);
2111 extern int field_is_static (struct field
*);
2115 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2116 const struct value_print_options
*,
2117 int, struct ui_file
*);
2119 extern int can_dereference (struct type
*);
2121 extern int is_integral_type (struct type
*);
2123 extern int is_floating_type (struct type
*);
2125 extern int is_scalar_type (struct type
*type
);
2127 extern int is_scalar_type_recursive (struct type
*);
2129 extern int class_or_union_p (const struct type
*);
2131 extern void maintenance_print_type (const char *, int);
2133 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2135 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2137 htab_t copied_types
);
2139 extern struct type
*copy_type (const struct type
*type
);
2141 extern bool types_equal (struct type
*, struct type
*);
2143 extern bool types_deeply_equal (struct type
*, struct type
*);
2145 extern int type_not_allocated (const struct type
*type
);
2147 extern int type_not_associated (const struct type
*type
);
2149 /* A flag to enable printing of debugging information of C++
2152 extern unsigned int overload_debug
;
2154 #endif /* GDBTYPES_H */