2 /* Internal type definitions for GDB.
4 Copyright (C) 1992-2020 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"
55 /* Forward declarations for prototypes. */
58 struct value_print_options
;
61 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
62 are already DWARF-specific. */
64 /* * Offset relative to the start of its containing CU (compilation
66 DEFINE_OFFSET_TYPE (cu_offset
, unsigned int);
68 /* * Offset relative to the start of its .debug_info or .debug_types
70 DEFINE_OFFSET_TYPE (sect_offset
, uint64_t);
73 sect_offset_str (sect_offset offset
)
75 return hex_string (to_underlying (offset
));
78 /* Some macros for char-based bitfields. */
80 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
81 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
82 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
83 #define B_TYPE unsigned char
84 #define B_BYTES(x) ( 1 + ((x)>>3) )
85 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
87 /* * Different kinds of data types are distinguished by the `code'
92 TYPE_CODE_BITSTRING
= -1, /**< Deprecated */
93 TYPE_CODE_UNDEF
= 0, /**< Not used; catches errors */
94 TYPE_CODE_PTR
, /**< Pointer type */
96 /* * Array type with lower & upper bounds.
98 Regardless of the language, GDB represents multidimensional
99 array types the way C does: as arrays of arrays. So an
100 instance of a GDB array type T can always be seen as a series
101 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
104 Row-major languages like C lay out multi-dimensional arrays so
105 that incrementing the rightmost index in a subscripting
106 expression results in the smallest change in the address of the
107 element referred to. Column-major languages like Fortran lay
108 them out so that incrementing the leftmost index results in the
111 This means that, in column-major languages, working our way
112 from type to target type corresponds to working through indices
113 from right to left, not left to right. */
116 TYPE_CODE_STRUCT
, /**< C struct or Pascal record */
117 TYPE_CODE_UNION
, /**< C union or Pascal variant part */
118 TYPE_CODE_ENUM
, /**< Enumeration type */
119 TYPE_CODE_FLAGS
, /**< Bit flags type */
120 TYPE_CODE_FUNC
, /**< Function type */
121 TYPE_CODE_INT
, /**< Integer type */
123 /* * Floating type. This is *NOT* a complex type. */
126 /* * Void type. The length field specifies the length (probably
127 always one) which is used in pointer arithmetic involving
128 pointers to this type, but actually dereferencing such a
129 pointer is invalid; a void type has no length and no actual
130 representation in memory or registers. A pointer to a void
131 type is a generic pointer. */
134 TYPE_CODE_SET
, /**< Pascal sets */
135 TYPE_CODE_RANGE
, /**< Range (integers within spec'd bounds). */
137 /* * A string type which is like an array of character but prints
138 differently. It does not contain a length field as Pascal
139 strings (for many Pascals, anyway) do; if we want to deal with
140 such strings, we should use a new type code. */
143 /* * Unknown type. The length field is valid if we were able to
144 deduce that much about the type, or 0 if we don't even know
149 TYPE_CODE_METHOD
, /**< Method type */
151 /* * Pointer-to-member-function type. This describes how to access a
152 particular member function of a class (possibly a virtual
153 member function). The representation may vary between different
157 /* * Pointer-to-member type. This is the offset within a class to
158 some particular data member. The only currently supported
159 representation uses an unbiased offset, with -1 representing
160 NULL; this is used by the Itanium C++ ABI (used by GCC on all
164 TYPE_CODE_REF
, /**< C++ Reference types */
166 TYPE_CODE_RVALUE_REF
, /**< C++ rvalue reference types */
168 TYPE_CODE_CHAR
, /**< *real* character type */
170 /* * Boolean type. 0 is false, 1 is true, and other values are
171 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
175 TYPE_CODE_COMPLEX
, /**< Complex float */
179 TYPE_CODE_NAMESPACE
, /**< C++ namespace. */
181 TYPE_CODE_DECFLOAT
, /**< Decimal floating point. */
183 TYPE_CODE_MODULE
, /**< Fortran module. */
185 /* * Internal function type. */
186 TYPE_CODE_INTERNAL_FUNCTION
,
188 /* * Methods implemented in extension languages. */
192 /* * Some bits for the type's instance_flags word. See the macros
193 below for documentation on each bit. */
195 enum type_instance_flag_value
: unsigned
197 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
198 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
199 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
200 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
201 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
202 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5),
203 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
204 TYPE_INSTANCE_FLAG_RESTRICT
= (1 << 7),
205 TYPE_INSTANCE_FLAG_ATOMIC
= (1 << 8)
208 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value
, type_instance_flags
);
210 /* * Unsigned integer type. If this is not set for a TYPE_CODE_INT,
211 the type is signed (unless TYPE_NOSIGN (below) is set). */
213 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
215 /* * No sign for this type. In C++, "char", "signed char", and
216 "unsigned char" are distinct types; so we need an extra flag to
217 indicate the absence of a sign! */
219 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
221 /* * A compiler may supply dwarf instrumentation
222 that indicates the desired endian interpretation of the variable
223 differs from the native endian representation. */
225 #define TYPE_ENDIANITY_NOT_DEFAULT(t) (TYPE_MAIN_TYPE (t)->flag_endianity_not_default)
227 /* * This appears in a type's flags word if it is a stub type (e.g.,
228 if someone referenced a type that wasn't defined in a source file
229 via (struct sir_not_appearing_in_this_film *)). */
231 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
233 /* * The target type of this type is a stub type, and this type needs
234 to be updated if it gets un-stubbed in check_typedef. Used for
235 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
236 based on the TYPE_LENGTH of the target type. Also, set for
237 TYPE_CODE_TYPEDEF. */
239 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
241 /* * This is a function type which appears to have a prototype. We
242 need this for function calls in order to tell us if it's necessary
243 to coerce the args, or to just do the standard conversions. This
244 is used with a short field. */
246 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
248 /* * This flag is used to indicate that processing for this type
251 (Mostly intended for HP platforms, where class methods, for
252 instance, can be encountered before their classes in the debug
253 info; the incomplete type has to be marked so that the class and
254 the method can be assigned correct types.) */
256 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
258 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
261 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
263 /* * Identify a vector type. Gcc is handling this by adding an extra
264 attribute to the array type. We slurp that in as a new flag of a
265 type. This is used only in dwarf2read.c. */
266 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
268 /* * The debugging formats (especially STABS) do not contain enough
269 information to represent all Ada types---especially those whose
270 size depends on dynamic quantities. Therefore, the GNAT Ada
271 compiler includes extra information in the form of additional type
272 definitions connected by naming conventions. This flag indicates
273 that the type is an ordinary (unencoded) GDB type that has been
274 created from the necessary run-time information, and does not need
275 further interpretation. Optionally marks ordinary, fixed-size GDB
278 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
280 /* * This debug target supports TYPE_STUB(t). In the unsupported case
281 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
282 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
283 guessed the TYPE_STUB(t) value (see dwarfread.c). */
285 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
287 /* * Not textual. By default, GDB treats all single byte integers as
288 characters (or elements of strings) unless this flag is set. */
290 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
292 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
293 address is returned by this function call. TYPE_TARGET_TYPE
294 determines the final returned function type to be presented to
297 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
299 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
300 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
301 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
303 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
304 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
305 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
307 /* * True if this type was declared using the "class" keyword. This is
308 only valid for C++ structure and enum types. If false, a structure
309 was declared as a "struct"; if true it was declared "class". For
310 enum types, this is true when "enum class" or "enum struct" was
311 used to declare the type.. */
313 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
315 /* * True if this type is a "flag" enum. A flag enum is one where all
316 the values are pairwise disjoint when "and"ed together. This
317 affects how enum values are printed. */
319 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
321 /* * True if this type is a discriminated union type. Only valid for
322 TYPE_CODE_UNION. A discriminated union stores a reference to the
323 discriminant field along with the discriminator values in a dynamic
326 #define TYPE_FLAG_DISCRIMINATED_UNION(t) \
327 (TYPE_MAIN_TYPE (t)->flag_discriminated_union)
329 /* * Constant type. If this is set, the corresponding type has a
332 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
334 /* * Volatile type. If this is set, the corresponding type has a
335 volatile modifier. */
337 #define TYPE_VOLATILE(t) \
338 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
340 /* * Restrict type. If this is set, the corresponding type has a
341 restrict modifier. */
343 #define TYPE_RESTRICT(t) \
344 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
346 /* * Atomic type. If this is set, the corresponding type has an
349 #define TYPE_ATOMIC(t) \
350 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
352 /* * True if this type represents either an lvalue or lvalue reference type. */
354 #define TYPE_IS_REFERENCE(t) \
355 (TYPE_CODE (t) == TYPE_CODE_REF || TYPE_CODE (t) == TYPE_CODE_RVALUE_REF)
357 /* * True if this type is allocatable. */
358 #define TYPE_IS_ALLOCATABLE(t) \
359 (get_dyn_prop (DYN_PROP_ALLOCATED, t) != NULL)
361 /* * Instruction-space delimited type. This is for Harvard architectures
362 which have separate instruction and data address spaces (and perhaps
365 GDB usually defines a flat address space that is a superset of the
366 architecture's two (or more) address spaces, but this is an extension
367 of the architecture's model.
369 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
370 resides in instruction memory, even if its address (in the extended
371 flat address space) does not reflect this.
373 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
374 corresponding type resides in the data memory space, even if
375 this is not indicated by its (flat address space) address.
377 If neither flag is set, the default space for functions / methods
378 is instruction space, and for data objects is data memory. */
380 #define TYPE_CODE_SPACE(t) \
381 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
383 #define TYPE_DATA_SPACE(t) \
384 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
386 /* * Address class flags. Some environments provide for pointers
387 whose size is different from that of a normal pointer or address
388 types where the bits are interpreted differently than normal
389 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
390 target specific ways to represent these different types of address
393 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
394 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
395 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
396 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
397 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
398 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
399 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
400 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
402 /* * Information needed for a discriminated union. A discriminated
403 union is handled somewhat differently from an ordinary union.
405 One field is designated as the discriminant. Only one other field
406 is active at a time; which one depends on the value of the
407 discriminant and the data in this structure.
409 Additionally, it is possible to have a univariant discriminated
410 union. In this case, the union has just a single field, which is
411 assumed to be the only active variant -- in this case no
412 discriminant is provided. */
414 struct discriminant_info
416 /* * The index of the discriminant field. If -1, then this union
417 must have just a single field. */
419 int discriminant_index
;
421 /* * The index of the default branch of the union. If -1, then
422 there is no default branch. */
426 /* * The discriminant values corresponding to each branch. This has
427 a number of entries equal to the number of fields in this union.
428 If discriminant_index is not -1, then that entry in this array is
429 not used. If default_index is not -1, then that entry in this
430 array is not used. */
432 ULONGEST discriminants
[1];
435 enum dynamic_prop_kind
437 PROP_UNDEFINED
, /* Not defined. */
438 PROP_CONST
, /* Constant. */
439 PROP_ADDR_OFFSET
, /* Address offset. */
440 PROP_LOCEXPR
, /* Location expression. */
441 PROP_LOCLIST
/* Location list. */
444 union dynamic_prop_data
446 /* Storage for constant property. */
450 /* Storage for dynamic property. */
455 /* * Used to store a dynamic property. */
459 /* Determine which field of the union dynamic_prop.data is used. */
460 enum dynamic_prop_kind kind
;
462 /* Storage for dynamic or static value. */
463 union dynamic_prop_data data
;
466 /* Compare two dynamic_prop objects for equality. dynamic_prop
467 instances are equal iff they have the same type and storage. */
468 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
470 /* Compare two dynamic_prop objects for inequality. */
471 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
476 /* * Define a type's dynamic property node kind. */
477 enum dynamic_prop_node_kind
479 /* A property providing a type's data location.
480 Evaluating this field yields to the location of an object's data. */
481 DYN_PROP_DATA_LOCATION
,
483 /* A property representing DW_AT_allocated. The presence of this attribute
484 indicates that the object of the type can be allocated/deallocated. */
487 /* A property representing DW_AT_allocated. The presence of this attribute
488 indicated that the object of the type can be associated. */
491 /* A property providing an array's byte stride. */
492 DYN_PROP_BYTE_STRIDE
,
494 /* A property holding information about a discriminated union. */
495 DYN_PROP_DISCRIMINATED
,
498 /* * List for dynamic type attributes. */
499 struct dynamic_prop_list
501 /* The kind of dynamic prop in this node. */
502 enum dynamic_prop_node_kind prop_kind
;
504 /* The dynamic property itself. */
505 struct dynamic_prop prop
;
507 /* A pointer to the next dynamic property. */
508 struct dynamic_prop_list
*next
;
511 /* * Determine which field of the union main_type.fields[x].loc is
516 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
517 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
518 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
519 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
520 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
523 /* * A discriminant to determine which field in the
524 main_type.type_specific union is being used, if any.
526 For types such as TYPE_CODE_FLT, the use of this
527 discriminant is really redundant, as we know from the type code
528 which field is going to be used. As such, it would be possible to
529 reduce the size of this enum in order to save a bit or two for
530 other fields of struct main_type. But, since we still have extra
531 room , and for the sake of clarity and consistency, we treat all fields
532 of the union the same way. */
534 enum type_specific_kind
537 TYPE_SPECIFIC_CPLUS_STUFF
,
538 TYPE_SPECIFIC_GNAT_STUFF
,
539 TYPE_SPECIFIC_FLOATFORMAT
,
540 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
542 TYPE_SPECIFIC_SELF_TYPE
547 struct objfile
*objfile
;
548 struct gdbarch
*gdbarch
;
553 /* * Position of this field, counting in bits from start of
554 containing structure. For big-endian targets, it is the bit
555 offset to the MSB. For little-endian targets, it is the bit
556 offset to the LSB. */
563 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
564 physaddr is the location (in the target) of the static
565 field. Otherwise, physname is the mangled label of the
569 const char *physname
;
571 /* * The field location can be computed by evaluating the
572 following DWARF block. Its DATA is allocated on
573 objfile_obstack - no CU load is needed to access it. */
575 struct dwarf2_locexpr_baton
*dwarf_block
;
580 union field_location loc
;
582 /* * For a function or member type, this is 1 if the argument is
583 marked artificial. Artificial arguments should not be shown
584 to the user. For TYPE_CODE_RANGE it is set if the specific
585 bound is not defined. */
587 unsigned int artificial
: 1;
589 /* * Discriminant for union field_location. */
591 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
593 /* * Size of this field, in bits, or zero if not packed.
594 If non-zero in an array type, indicates the element size in
595 bits (used only in Ada at the moment).
596 For an unpacked field, the field's type's length
597 says how many bytes the field occupies. */
599 unsigned int bitsize
: 28;
601 /* * In a struct or union type, type of this field.
602 - In a function or member type, type of this argument.
603 - In an array type, the domain-type of the array. */
607 /* * Name of field, value or argument.
608 NULL for range bounds, array domains, and member function
616 /* * Low bound of range. */
618 struct dynamic_prop low
;
620 /* * High bound of range. */
622 struct dynamic_prop high
;
624 /* The stride value for this range. This can be stored in bits or bytes
625 based on the value of BYTE_STRIDE_P. It is optional to have a stride
626 value, if this range has no stride value defined then this will be set
627 to the constant zero. */
629 struct dynamic_prop stride
;
631 /* * The bias. Sometimes a range value is biased before storage.
632 The bias is added to the stored bits to form the true value. */
636 /* True if HIGH range bound contains the number of elements in the
637 subrange. This affects how the final high bound is computed. */
639 unsigned int flag_upper_bound_is_count
: 1;
641 /* True if LOW or/and HIGH are resolved into a static bound from
644 unsigned int flag_bound_evaluated
: 1;
646 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
648 unsigned int flag_is_byte_stride
: 1;
651 /* Compare two range_bounds objects for equality. Simply does
652 memberwise comparison. */
653 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
655 /* Compare two range_bounds objects for inequality. */
656 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
663 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
664 point to cplus_struct_default, a default static instance of a
665 struct cplus_struct_type. */
667 struct cplus_struct_type
*cplus_stuff
;
669 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
670 provides additional information. */
672 struct gnat_aux_type
*gnat_stuff
;
674 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
675 floatformat object that describes the floating-point value
676 that resides within the type. */
678 const struct floatformat
*floatformat
;
680 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
682 struct func_type
*func_stuff
;
684 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
685 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
688 struct type
*self_type
;
691 /* * Main structure representing a type in GDB.
693 This structure is space-critical. Its layout has been tweaked to
694 reduce the space used. */
698 /* * Code for kind of type. */
700 ENUM_BITFIELD(type_code
) code
: 8;
702 /* * Flags about this type. These fields appear at this location
703 because they packs nicely here. See the TYPE_* macros for
704 documentation about these fields. */
706 unsigned int flag_unsigned
: 1;
707 unsigned int flag_nosign
: 1;
708 unsigned int flag_stub
: 1;
709 unsigned int flag_target_stub
: 1;
710 unsigned int flag_static
: 1;
711 unsigned int flag_prototyped
: 1;
712 unsigned int flag_incomplete
: 1;
713 unsigned int flag_varargs
: 1;
714 unsigned int flag_vector
: 1;
715 unsigned int flag_stub_supported
: 1;
716 unsigned int flag_gnu_ifunc
: 1;
717 unsigned int flag_fixed_instance
: 1;
718 unsigned int flag_objfile_owned
: 1;
719 unsigned int flag_endianity_not_default
: 1;
721 /* * True if this type was declared with "class" rather than
724 unsigned int flag_declared_class
: 1;
726 /* * True if this is an enum type with disjoint values. This
727 affects how the enum is printed. */
729 unsigned int flag_flag_enum
: 1;
731 /* * True if this type is a discriminated union type. Only valid
732 for TYPE_CODE_UNION. A discriminated union stores a reference to
733 the discriminant field along with the discriminator values in a
736 unsigned int flag_discriminated_union
: 1;
738 /* * A discriminant telling us which field of the type_specific
739 union is being used for this type, if any. */
741 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
743 /* * Number of fields described for this type. This field appears
744 at this location because it packs nicely here. */
748 /* * Name of this type, or NULL if none.
750 This is used for printing only. For looking up a name, look for
751 a symbol in the VAR_DOMAIN. This is generally allocated in the
752 objfile's obstack. However coffread.c uses malloc. */
756 /* * Every type is now associated with a particular objfile, and the
757 type is allocated on the objfile_obstack for that objfile. One
758 problem however, is that there are times when gdb allocates new
759 types while it is not in the process of reading symbols from a
760 particular objfile. Fortunately, these happen when the type
761 being created is a derived type of an existing type, such as in
762 lookup_pointer_type(). So we can just allocate the new type
763 using the same objfile as the existing type, but to do this we
764 need a backpointer to the objfile from the existing type. Yes
765 this is somewhat ugly, but without major overhaul of the internal
766 type system, it can't be avoided for now. */
768 union type_owner owner
;
770 /* * For a pointer type, describes the type of object pointed to.
771 - For an array type, describes the type of the elements.
772 - For a function or method type, describes the type of the return value.
773 - For a range type, describes the type of the full range.
774 - For a complex type, describes the type of each coordinate.
775 - For a special record or union type encoding a dynamic-sized type
776 in GNAT, a memoized pointer to a corresponding static version of
778 - Unused otherwise. */
780 struct type
*target_type
;
782 /* * For structure and union types, a description of each field.
783 For set and pascal array types, there is one "field",
784 whose type is the domain type of the set or array.
785 For range types, there are two "fields",
786 the minimum and maximum values (both inclusive).
787 For enum types, each possible value is described by one "field".
788 For a function or method type, a "field" for each parameter.
789 For C++ classes, there is one field for each base class (if it is
790 a derived class) plus one field for each class data member. Member
791 functions are recorded elsewhere.
793 Using a pointer to a separate array of fields
794 allows all types to have the same size, which is useful
795 because we can allocate the space for a type before
796 we know what to put in it. */
800 struct field
*fields
;
802 /* * Union member used for range types. */
804 struct range_bounds
*bounds
;
808 /* * Slot to point to additional language-specific fields of this
811 union type_specific type_specific
;
813 /* * Contains all dynamic type properties. */
814 struct dynamic_prop_list
*dyn_prop_list
;
817 /* * Number of bits allocated for alignment. */
819 #define TYPE_ALIGN_BITS 8
821 /* * A ``struct type'' describes a particular instance of a type, with
822 some particular qualification. */
826 /* * Type that is a pointer to this type.
827 NULL if no such pointer-to type is known yet.
828 The debugger may add the address of such a type
829 if it has to construct one later. */
831 struct type
*pointer_type
;
833 /* * C++: also need a reference type. */
835 struct type
*reference_type
;
837 /* * A C++ rvalue reference type added in C++11. */
839 struct type
*rvalue_reference_type
;
841 /* * Variant chain. This points to a type that differs from this
842 one only in qualifiers and length. Currently, the possible
843 qualifiers are const, volatile, code-space, data-space, and
844 address class. The length may differ only when one of the
845 address class flags are set. The variants are linked in a
846 circular ring and share MAIN_TYPE. */
850 /* * The alignment for this type. Zero means that the alignment was
851 not specified in the debug info. Note that this is stored in a
852 funny way: as the log base 2 (plus 1) of the alignment; so a
853 value of 1 means the alignment is 1, and a value of 9 means the
856 unsigned align_log2
: TYPE_ALIGN_BITS
;
858 /* * Flags specific to this instance of the type, indicating where
861 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
862 binary or-ed with the target type, with a special case for
863 address class and space class. For example if this typedef does
864 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
865 instance flags are completely inherited from the target type. No
866 qualifiers can be cleared by the typedef. See also
868 unsigned instance_flags
: 9;
870 /* * Length of storage for a value of this type. The value is the
871 expression in host bytes of what sizeof(type) would return. This
872 size includes padding. For example, an i386 extended-precision
873 floating point value really only occupies ten bytes, but most
874 ABI's declare its size to be 12 bytes, to preserve alignment.
875 A `struct type' representing such a floating-point type would
876 have a `length' value of 12, even though the last two bytes are
879 Since this field is expressed in host bytes, its value is appropriate
880 to pass to memcpy and such (it is assumed that GDB itself always runs
881 on an 8-bits addressable architecture). However, when using it for
882 target address arithmetic (e.g. adding it to a target address), the
883 type_length_units function should be used in order to get the length
884 expressed in target addressable memory units. */
888 /* * Core type, shared by a group of qualified types. */
890 struct main_type
*main_type
;
893 #define NULL_TYPE ((struct type *) 0)
898 /* * The overloaded name.
899 This is generally allocated in the objfile's obstack.
900 However stabsread.c sometimes uses malloc. */
904 /* * The number of methods with this name. */
908 /* * The list of methods. */
910 struct fn_field
*fn_fields
;
917 /* * If is_stub is clear, this is the mangled name which we can look
918 up to find the address of the method (FIXME: it would be cleaner
919 to have a pointer to the struct symbol here instead).
921 If is_stub is set, this is the portion of the mangled name which
922 specifies the arguments. For example, "ii", if there are two int
923 arguments, or "" if there are no arguments. See gdb_mangle_name
924 for the conversion from this format to the one used if is_stub is
927 const char *physname
;
929 /* * The function type for the method.
931 (This comment used to say "The return value of the method", but
932 that's wrong. The function type is expected here, i.e. something
933 with TYPE_CODE_METHOD, and *not* the return-value type). */
937 /* * For virtual functions. First baseclass that defines this
940 struct type
*fcontext
;
944 unsigned int is_const
:1;
945 unsigned int is_volatile
:1;
946 unsigned int is_private
:1;
947 unsigned int is_protected
:1;
948 unsigned int is_artificial
:1;
950 /* * A stub method only has some fields valid (but they are enough
951 to reconstruct the rest of the fields). */
953 unsigned int is_stub
:1;
955 /* * True if this function is a constructor, false otherwise. */
957 unsigned int is_constructor
: 1;
959 /* * True if this function is deleted, false otherwise. */
961 unsigned int is_deleted
: 1;
963 /* * DW_AT_defaulted attribute for this function. The value is one
964 of the DW_DEFAULTED constants. */
966 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
970 unsigned int dummy
:6;
972 /* * Index into that baseclass's virtual function table, minus 2;
973 else if static: VOFFSET_STATIC; else: 0. */
975 unsigned int voffset
:16;
977 #define VOFFSET_STATIC 1
983 /* * Unqualified name to be prefixed by owning class qualified
988 /* * Type this typedef named NAME represents. */
992 /* * True if this field was declared protected, false otherwise. */
993 unsigned int is_protected
: 1;
995 /* * True if this field was declared private, false otherwise. */
996 unsigned int is_private
: 1;
999 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1000 TYPE_CODE_UNION nodes. */
1002 struct cplus_struct_type
1004 /* * Number of base classes this type derives from. The
1005 baseclasses are stored in the first N_BASECLASSES fields
1006 (i.e. the `fields' field of the struct type). The only fields
1007 of struct field that are used are: type, name, loc.bitpos. */
1009 short n_baseclasses
;
1011 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1012 All access to this field must be through TYPE_VPTR_FIELDNO as one
1013 thing it does is check whether the field has been initialized.
1014 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1015 which for portability reasons doesn't initialize this field.
1016 TYPE_VPTR_FIELDNO returns -1 for this case.
1018 If -1, we were unable to find the virtual function table pointer in
1019 initial symbol reading, and get_vptr_fieldno should be called to find
1020 it if possible. get_vptr_fieldno will update this field if possible.
1021 Otherwise the value is left at -1.
1023 Unused if this type does not have virtual functions. */
1027 /* * Number of methods with unique names. All overloaded methods
1028 with the same name count only once. */
1032 /* * Number of template arguments. */
1034 unsigned short n_template_arguments
;
1036 /* * One if this struct is a dynamic class, as defined by the
1037 Itanium C++ ABI: if it requires a virtual table pointer,
1038 because it or any of its base classes have one or more virtual
1039 member functions or virtual base classes. Minus one if not
1040 dynamic. Zero if not yet computed. */
1044 /* * The calling convention for this type, fetched from the
1045 DW_AT_calling_convention attribute. The value is one of the
1048 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1050 /* * The base class which defined the virtual function table pointer. */
1052 struct type
*vptr_basetype
;
1054 /* * For derived classes, the number of base classes is given by
1055 n_baseclasses and virtual_field_bits is a bit vector containing
1056 one bit per base class. If the base class is virtual, the
1057 corresponding bit will be set.
1062 class C : public B, public virtual A {};
1064 B is a baseclass of C; A is a virtual baseclass for C.
1065 This is a C++ 2.0 language feature. */
1067 B_TYPE
*virtual_field_bits
;
1069 /* * For classes with private fields, the number of fields is
1070 given by nfields and private_field_bits is a bit vector
1071 containing one bit per field.
1073 If the field is private, the corresponding bit will be set. */
1075 B_TYPE
*private_field_bits
;
1077 /* * For classes with protected fields, the number of fields is
1078 given by nfields and protected_field_bits is a bit vector
1079 containing one bit per field.
1081 If the field is private, the corresponding bit will be set. */
1083 B_TYPE
*protected_field_bits
;
1085 /* * For classes with fields to be ignored, either this is
1086 optimized out or this field has length 0. */
1088 B_TYPE
*ignore_field_bits
;
1090 /* * For classes, structures, and unions, a description of each
1091 field, which consists of an overloaded name, followed by the
1092 types of arguments that the method expects, and then the name
1093 after it has been renamed to make it distinct.
1095 fn_fieldlists points to an array of nfn_fields of these. */
1097 struct fn_fieldlist
*fn_fieldlists
;
1099 /* * typedefs defined inside this class. typedef_field points to
1100 an array of typedef_field_count elements. */
1102 struct decl_field
*typedef_field
;
1104 unsigned typedef_field_count
;
1106 /* * The nested types defined by this type. nested_types points to
1107 an array of nested_types_count elements. */
1109 struct decl_field
*nested_types
;
1111 unsigned nested_types_count
;
1113 /* * The template arguments. This is an array with
1114 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1117 struct symbol
**template_arguments
;
1120 /* * Struct used to store conversion rankings. */
1126 /* * When two conversions are of the same type and therefore have
1127 the same rank, subrank is used to differentiate the two.
1129 Eg: Two derived-class-pointer to base-class-pointer conversions
1130 would both have base pointer conversion rank, but the
1131 conversion with the shorter distance to the ancestor is
1132 preferable. 'subrank' would be used to reflect that. */
1137 /* * Used for ranking a function for overload resolution. */
1139 typedef std::vector
<rank
> badness_vector
;
1141 /* * GNAT Ada-specific information for various Ada types. */
1143 struct gnat_aux_type
1145 /* * Parallel type used to encode information about dynamic types
1146 used in Ada (such as variant records, variable-size array,
1148 struct type
* descriptive_type
;
1151 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1155 /* * The calling convention for targets supporting multiple ABIs.
1156 Right now this is only fetched from the Dwarf-2
1157 DW_AT_calling_convention attribute. The value is one of the
1160 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1162 /* * Whether this function normally returns to its caller. It is
1163 set from the DW_AT_noreturn attribute if set on the
1164 DW_TAG_subprogram. */
1166 unsigned int is_noreturn
: 1;
1168 /* * Only those DW_TAG_call_site's in this function that have
1169 DW_AT_call_tail_call set are linked in this list. Function
1170 without its tail call list complete
1171 (DW_AT_call_all_tail_calls or its superset
1172 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1173 DW_TAG_call_site's exist in such function. */
1175 struct call_site
*tail_call_list
;
1177 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1178 contains the method. */
1180 struct type
*self_type
;
1183 /* struct call_site_parameter can be referenced in callees by several ways. */
1185 enum call_site_parameter_kind
1187 /* * Use field call_site_parameter.u.dwarf_reg. */
1188 CALL_SITE_PARAMETER_DWARF_REG
,
1190 /* * Use field call_site_parameter.u.fb_offset. */
1191 CALL_SITE_PARAMETER_FB_OFFSET
,
1193 /* * Use field call_site_parameter.u.param_offset. */
1194 CALL_SITE_PARAMETER_PARAM_OFFSET
1197 struct call_site_target
1199 union field_location loc
;
1201 /* * Discriminant for union field_location. */
1203 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1206 union call_site_parameter_u
1208 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1209 as DWARF register number, for register passed
1214 /* * Offset from the callee's frame base, for stack passed
1215 parameters. This equals offset from the caller's stack
1218 CORE_ADDR fb_offset
;
1220 /* * Offset relative to the start of this PER_CU to
1221 DW_TAG_formal_parameter which is referenced by both
1222 caller and the callee. */
1224 cu_offset param_cu_off
;
1227 struct call_site_parameter
1229 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1231 union call_site_parameter_u u
;
1233 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1235 const gdb_byte
*value
;
1238 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1239 It may be NULL if not provided by DWARF. */
1241 const gdb_byte
*data_value
;
1242 size_t data_value_size
;
1245 /* * A place where a function gets called from, represented by
1246 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1250 /* * Address of the first instruction after this call. It must be
1251 the first field as we overload core_addr_hash and core_addr_eq
1256 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1258 struct call_site
*tail_call_next
;
1260 /* * Describe DW_AT_call_target. Missing attribute uses
1261 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1263 struct call_site_target target
;
1265 /* * Size of the PARAMETER array. */
1267 unsigned parameter_count
;
1269 /* * CU of the function where the call is located. It gets used
1270 for DWARF blocks execution in the parameter array below. */
1272 struct dwarf2_per_cu_data
*per_cu
;
1274 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1276 struct call_site_parameter parameter
[1];
1279 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1280 static structure. */
1282 extern const struct cplus_struct_type cplus_struct_default
;
1284 extern void allocate_cplus_struct_type (struct type
*);
1286 #define INIT_CPLUS_SPECIFIC(type) \
1287 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1288 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1289 &cplus_struct_default)
1291 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1293 #define HAVE_CPLUS_STRUCT(type) \
1294 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1295 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1297 #define INIT_NONE_SPECIFIC(type) \
1298 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1299 TYPE_MAIN_TYPE (type)->type_specific = {})
1301 extern const struct gnat_aux_type gnat_aux_default
;
1303 extern void allocate_gnat_aux_type (struct type
*);
1305 #define INIT_GNAT_SPECIFIC(type) \
1306 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1307 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1308 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1309 /* * A macro that returns non-zero if the type-specific data should be
1310 read as "gnat-stuff". */
1311 #define HAVE_GNAT_AUX_INFO(type) \
1312 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1314 /* * True if TYPE is known to be an Ada type of some kind. */
1315 #define ADA_TYPE_P(type) \
1316 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1317 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1318 && TYPE_FIXED_INSTANCE (type)))
1320 #define INIT_FUNC_SPECIFIC(type) \
1321 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1322 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1323 TYPE_ZALLOC (type, \
1324 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1326 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1327 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1328 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
1329 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1330 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1331 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1332 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1333 #define TYPE_CHAIN(thistype) (thistype)->chain
1334 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1335 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1336 so you only have to call check_typedef once. Since allocate_value
1337 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1338 #define TYPE_LENGTH(thistype) (thistype)->length
1340 /* * Return the alignment of the type in target addressable memory
1341 units, or 0 if no alignment was specified. */
1342 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1344 /* * Return the alignment of the type in target addressable memory
1345 units, or 0 if no alignment was specified. */
1346 extern unsigned type_raw_align (struct type
*);
1348 /* * Return the alignment of the type in target addressable memory
1349 units. Return 0 if the alignment cannot be determined; but note
1350 that this makes an effort to compute the alignment even it it was
1351 not specified in the debug info. */
1352 extern unsigned type_align (struct type
*);
1354 /* * Set the alignment of the type. The alignment must be a power of
1355 2. Returns false if the given value does not fit in the available
1356 space in struct type. */
1357 extern bool set_type_align (struct type
*, ULONGEST
);
1359 /* * Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
1360 type, you need to do TYPE_CODE (check_type (this_type)). */
1361 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
1362 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
1363 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
1365 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1366 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1367 #define TYPE_LOW_BOUND(range_type) \
1368 TYPE_RANGE_DATA(range_type)->low.data.const_val
1369 #define TYPE_HIGH_BOUND(range_type) \
1370 TYPE_RANGE_DATA(range_type)->high.data.const_val
1371 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1372 (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
1373 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1374 (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
1375 #define TYPE_HIGH_BOUND_KIND(range_type) \
1376 TYPE_RANGE_DATA(range_type)->high.kind
1377 #define TYPE_LOW_BOUND_KIND(range_type) \
1378 TYPE_RANGE_DATA(range_type)->low.kind
1379 #define TYPE_BIT_STRIDE(range_type) \
1380 (TYPE_RANGE_DATA(range_type)->stride.data.const_val \
1381 * (TYPE_RANGE_DATA(range_type)->flag_is_byte_stride ? 8 : 1))
1383 /* Property accessors for the type data location. */
1384 #define TYPE_DATA_LOCATION(thistype) \
1385 get_dyn_prop (DYN_PROP_DATA_LOCATION, thistype)
1386 #define TYPE_DATA_LOCATION_BATON(thistype) \
1387 TYPE_DATA_LOCATION (thistype)->data.baton
1388 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1389 TYPE_DATA_LOCATION (thistype)->data.const_val
1390 #define TYPE_DATA_LOCATION_KIND(thistype) \
1391 TYPE_DATA_LOCATION (thistype)->kind
1393 /* Property accessors for the type allocated/associated. */
1394 #define TYPE_ALLOCATED_PROP(thistype) \
1395 get_dyn_prop (DYN_PROP_ALLOCATED, thistype)
1396 #define TYPE_ASSOCIATED_PROP(thistype) \
1397 get_dyn_prop (DYN_PROP_ASSOCIATED, thistype)
1399 /* Attribute accessors for dynamic properties. */
1400 #define TYPE_DYN_PROP_LIST(thistype) \
1401 TYPE_MAIN_TYPE(thistype)->dyn_prop_list
1402 #define TYPE_DYN_PROP_BATON(dynprop) \
1404 #define TYPE_DYN_PROP_ADDR(dynprop) \
1405 dynprop->data.const_val
1406 #define TYPE_DYN_PROP_KIND(dynprop) \
1410 /* Accessors for struct range_bounds data attached to an array type's
1413 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1414 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1415 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1416 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1418 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1419 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1421 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1422 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1424 #define TYPE_ARRAY_BIT_STRIDE(arraytype) \
1425 (TYPE_BIT_STRIDE(TYPE_INDEX_TYPE((arraytype))))
1429 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1430 /* Do not call this, use TYPE_SELF_TYPE. */
1431 extern struct type
*internal_type_self_type (struct type
*);
1432 extern void set_type_self_type (struct type
*, struct type
*);
1434 extern int internal_type_vptr_fieldno (struct type
*);
1435 extern void set_type_vptr_fieldno (struct type
*, int);
1436 extern struct type
*internal_type_vptr_basetype (struct type
*);
1437 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1438 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1439 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1441 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1442 #define TYPE_SPECIFIC_FIELD(thistype) \
1443 TYPE_MAIN_TYPE(thistype)->type_specific_field
1444 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1445 where we're trying to print an Ada array using the C language.
1446 In that case, there is no "cplus_stuff", but the C language assumes
1447 that there is. What we do, in that case, is pretend that there is
1448 an implicit one which is the default cplus stuff. */
1449 #define TYPE_CPLUS_SPECIFIC(thistype) \
1450 (!HAVE_CPLUS_STRUCT(thistype) \
1451 ? (struct cplus_struct_type*)&cplus_struct_default \
1452 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1453 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1454 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1455 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1456 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1457 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1458 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1459 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1460 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1461 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1462 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1463 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1464 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1465 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1466 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1467 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1468 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1470 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1471 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1472 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1474 #define FIELD_TYPE(thisfld) ((thisfld).type)
1475 #define FIELD_NAME(thisfld) ((thisfld).name)
1476 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1477 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1478 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1479 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1480 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1481 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1482 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1483 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1484 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1485 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1486 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1487 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1488 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1489 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1490 #define SET_FIELD_PHYSNAME(thisfld, name) \
1491 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1492 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1493 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1494 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1495 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1496 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1497 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1498 FIELD_DWARF_BLOCK (thisfld) = (addr))
1499 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1500 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1502 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1503 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1504 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1505 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1506 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1507 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL (TYPE_FIELD (thistype, n))
1508 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1509 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1510 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1511 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1512 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1513 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1515 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1516 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1517 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1518 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1519 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1520 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1521 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1522 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1523 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1524 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1525 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1526 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1527 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1528 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1529 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1530 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1531 #define TYPE_FIELD_PRIVATE(thistype, n) \
1532 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1533 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1534 #define TYPE_FIELD_PROTECTED(thistype, n) \
1535 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1536 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1537 #define TYPE_FIELD_IGNORE(thistype, n) \
1538 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1539 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1540 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1541 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1542 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1544 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1545 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1546 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1547 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1548 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1550 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1551 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1552 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1553 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1554 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1555 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1557 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1558 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1559 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1560 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1561 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1562 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1563 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1564 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1565 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1566 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1567 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1568 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1569 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1570 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1571 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1572 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1573 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1575 /* Accessors for typedefs defined by a class. */
1576 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1577 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1578 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1579 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1580 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1581 TYPE_TYPEDEF_FIELD (thistype, n).name
1582 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1583 TYPE_TYPEDEF_FIELD (thistype, n).type
1584 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1585 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1586 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1587 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1588 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1589 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1591 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1592 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1593 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1594 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1595 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1596 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1597 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1598 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1599 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1600 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1601 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1602 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1603 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1604 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1606 #define TYPE_IS_OPAQUE(thistype) \
1607 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1608 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1609 && (TYPE_NFIELDS (thistype) == 0) \
1610 && (!HAVE_CPLUS_STRUCT (thistype) \
1611 || TYPE_NFN_FIELDS (thistype) == 0) \
1612 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1614 /* * A helper macro that returns the name of a type or "unnamed type"
1615 if the type has no name. */
1617 #define TYPE_SAFE_NAME(type) \
1618 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>"))
1620 /* * A helper macro that returns the name of an error type. If the
1621 type has a name, it is used; otherwise, a default is used. */
1623 #define TYPE_ERROR_NAME(type) \
1624 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1626 /* Given TYPE, return its floatformat. */
1627 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1631 /* Integral types. */
1633 /* Implicit size/sign (based on the architecture's ABI). */
1634 struct type
*builtin_void
;
1635 struct type
*builtin_char
;
1636 struct type
*builtin_short
;
1637 struct type
*builtin_int
;
1638 struct type
*builtin_long
;
1639 struct type
*builtin_signed_char
;
1640 struct type
*builtin_unsigned_char
;
1641 struct type
*builtin_unsigned_short
;
1642 struct type
*builtin_unsigned_int
;
1643 struct type
*builtin_unsigned_long
;
1644 struct type
*builtin_half
;
1645 struct type
*builtin_float
;
1646 struct type
*builtin_double
;
1647 struct type
*builtin_long_double
;
1648 struct type
*builtin_complex
;
1649 struct type
*builtin_double_complex
;
1650 struct type
*builtin_string
;
1651 struct type
*builtin_bool
;
1652 struct type
*builtin_long_long
;
1653 struct type
*builtin_unsigned_long_long
;
1654 struct type
*builtin_decfloat
;
1655 struct type
*builtin_decdouble
;
1656 struct type
*builtin_declong
;
1658 /* "True" character types.
1659 We use these for the '/c' print format, because c_char is just a
1660 one-byte integral type, which languages less laid back than C
1661 will print as ... well, a one-byte integral type. */
1662 struct type
*builtin_true_char
;
1663 struct type
*builtin_true_unsigned_char
;
1665 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1666 is for when an architecture needs to describe a register that has
1668 struct type
*builtin_int0
;
1669 struct type
*builtin_int8
;
1670 struct type
*builtin_uint8
;
1671 struct type
*builtin_int16
;
1672 struct type
*builtin_uint16
;
1673 struct type
*builtin_int24
;
1674 struct type
*builtin_uint24
;
1675 struct type
*builtin_int32
;
1676 struct type
*builtin_uint32
;
1677 struct type
*builtin_int64
;
1678 struct type
*builtin_uint64
;
1679 struct type
*builtin_int128
;
1680 struct type
*builtin_uint128
;
1682 /* Wide character types. */
1683 struct type
*builtin_char16
;
1684 struct type
*builtin_char32
;
1685 struct type
*builtin_wchar
;
1687 /* Pointer types. */
1689 /* * `pointer to data' type. Some target platforms use an implicitly
1690 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1691 struct type
*builtin_data_ptr
;
1693 /* * `pointer to function (returning void)' type. Harvard
1694 architectures mean that ABI function and code pointers are not
1695 interconvertible. Similarly, since ANSI, C standards have
1696 explicitly said that pointers to functions and pointers to data
1697 are not interconvertible --- that is, you can't cast a function
1698 pointer to void * and back, and expect to get the same value.
1699 However, all function pointer types are interconvertible, so void
1700 (*) () can server as a generic function pointer. */
1702 struct type
*builtin_func_ptr
;
1704 /* * `function returning pointer to function (returning void)' type.
1705 The final void return type is not significant for it. */
1707 struct type
*builtin_func_func
;
1709 /* Special-purpose types. */
1711 /* * This type is used to represent a GDB internal function. */
1713 struct type
*internal_fn
;
1715 /* * This type is used to represent an xmethod. */
1716 struct type
*xmethod
;
1719 /* * Return the type table for the specified architecture. */
1721 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1723 /* * Per-objfile types used by symbol readers. */
1727 /* Basic types based on the objfile architecture. */
1728 struct type
*builtin_void
;
1729 struct type
*builtin_char
;
1730 struct type
*builtin_short
;
1731 struct type
*builtin_int
;
1732 struct type
*builtin_long
;
1733 struct type
*builtin_long_long
;
1734 struct type
*builtin_signed_char
;
1735 struct type
*builtin_unsigned_char
;
1736 struct type
*builtin_unsigned_short
;
1737 struct type
*builtin_unsigned_int
;
1738 struct type
*builtin_unsigned_long
;
1739 struct type
*builtin_unsigned_long_long
;
1740 struct type
*builtin_half
;
1741 struct type
*builtin_float
;
1742 struct type
*builtin_double
;
1743 struct type
*builtin_long_double
;
1745 /* * This type is used to represent symbol addresses. */
1746 struct type
*builtin_core_addr
;
1748 /* * This type represents a type that was unrecognized in symbol
1750 struct type
*builtin_error
;
1752 /* * Types used for symbols with no debug information. */
1753 struct type
*nodebug_text_symbol
;
1754 struct type
*nodebug_text_gnu_ifunc_symbol
;
1755 struct type
*nodebug_got_plt_symbol
;
1756 struct type
*nodebug_data_symbol
;
1757 struct type
*nodebug_unknown_symbol
;
1758 struct type
*nodebug_tls_symbol
;
1761 /* * Return the type table for the specified objfile. */
1763 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1765 /* Explicit floating-point formats. See "floatformat.h". */
1766 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1767 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1768 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1769 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1770 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1771 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1772 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1773 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1774 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1775 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1776 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1777 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1780 /* Allocate space for storing data associated with a particular
1781 type. We ensure that the space is allocated using the same
1782 mechanism that was used to allocate the space for the type
1783 structure itself. I.e. if the type is on an objfile's
1784 objfile_obstack, then the space for data associated with that type
1785 will also be allocated on the objfile_obstack. If the type is
1786 associated with a gdbarch, then the space for data associated with that
1787 type will also be allocated on the gdbarch_obstack.
1789 If a type is not associated with neither an objfile or a gdbarch then
1790 you should not use this macro to allocate space for data, instead you
1791 should call xmalloc directly, and ensure the memory is correctly freed
1792 when it is no longer needed. */
1794 #define TYPE_ALLOC(t,size) \
1795 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
1796 ? &TYPE_OBJFILE (t)->objfile_obstack \
1797 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
1801 /* See comment on TYPE_ALLOC. */
1803 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
1805 /* Use alloc_type to allocate a type owned by an objfile. Use
1806 alloc_type_arch to allocate a type owned by an architecture. Use
1807 alloc_type_copy to allocate a type with the same owner as a
1808 pre-existing template type, no matter whether objfile or
1810 extern struct type
*alloc_type (struct objfile
*);
1811 extern struct type
*alloc_type_arch (struct gdbarch
*);
1812 extern struct type
*alloc_type_copy (const struct type
*);
1814 /* * Return the type's architecture. For types owned by an
1815 architecture, that architecture is returned. For types owned by an
1816 objfile, that objfile's architecture is returned. */
1818 extern struct gdbarch
*get_type_arch (const struct type
*);
1820 /* * This returns the target type (or NULL) of TYPE, also skipping
1823 extern struct type
*get_target_type (struct type
*type
);
1825 /* Return the equivalent of TYPE_LENGTH, but in number of target
1826 addressable memory units of the associated gdbarch instead of bytes. */
1828 extern unsigned int type_length_units (struct type
*type
);
1830 /* * Helper function to construct objfile-owned types. */
1832 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
1834 extern struct type
*init_integer_type (struct objfile
*, int, int,
1836 extern struct type
*init_character_type (struct objfile
*, int, int,
1838 extern struct type
*init_boolean_type (struct objfile
*, int, int,
1840 extern struct type
*init_float_type (struct objfile
*, int, const char *,
1841 const struct floatformat
**,
1842 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
1843 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
1844 extern struct type
*init_complex_type (struct objfile
*, const char *,
1846 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
1849 /* Helper functions to construct architecture-owned types. */
1850 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
1852 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
1854 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
1856 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
1858 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
1859 const struct floatformat
**);
1860 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
1861 extern struct type
*arch_complex_type (struct gdbarch
*, const char *,
1863 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
1866 /* Helper functions to construct a struct or record type. An
1867 initially empty type is created using arch_composite_type().
1868 Fields are then added using append_composite_type_field*(). A union
1869 type has its size set to the largest field. A struct type has each
1870 field packed against the previous. */
1872 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1873 const char *name
, enum type_code code
);
1874 extern void append_composite_type_field (struct type
*t
, const char *name
,
1875 struct type
*field
);
1876 extern void append_composite_type_field_aligned (struct type
*t
,
1880 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
1881 struct type
*field
);
1883 /* Helper functions to construct a bit flags type. An initially empty
1884 type is created using arch_flag_type(). Flags are then added using
1885 append_flag_type_field() and append_flag_type_flag(). */
1886 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1887 const char *name
, int bit
);
1888 extern void append_flags_type_field (struct type
*type
,
1889 int start_bitpos
, int nr_bits
,
1890 struct type
*field_type
, const char *name
);
1891 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
1894 extern void make_vector_type (struct type
*array_type
);
1895 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
1897 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
1898 extern struct type
*lookup_lvalue_reference_type (struct type
*);
1899 extern struct type
*lookup_rvalue_reference_type (struct type
*);
1902 extern struct type
*make_reference_type (struct type
*, struct type
**,
1905 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
1907 extern struct type
*make_restrict_type (struct type
*);
1909 extern struct type
*make_unqualified_type (struct type
*);
1911 extern struct type
*make_atomic_type (struct type
*);
1913 extern void replace_type (struct type
*, struct type
*);
1915 extern int address_space_name_to_int (struct gdbarch
*, const char *);
1917 extern const char *address_space_int_to_name (struct gdbarch
*, int);
1919 extern struct type
*make_type_with_address_space (struct type
*type
,
1920 int space_identifier
);
1922 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
1924 extern struct type
*lookup_methodptr_type (struct type
*);
1926 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
1927 struct type
*to_type
, struct field
*args
,
1928 int nargs
, int varargs
);
1930 extern void smash_to_memberptr_type (struct type
*, struct type
*,
1933 extern void smash_to_methodptr_type (struct type
*, struct type
*);
1935 extern struct type
*allocate_stub_method (struct type
*);
1937 extern const char *type_name_or_error (struct type
*type
);
1941 /* The field of the element, or NULL if no element was found. */
1942 struct field
*field
;
1944 /* The bit offset of the element in the parent structure. */
1948 /* Given a type TYPE, lookup the field and offset of the component named
1951 TYPE can be either a struct or union, or a pointer or reference to
1952 a struct or union. If it is a pointer or reference, its target
1953 type is automatically used. Thus '.' and '->' are interchangable,
1954 as specified for the definitions of the expression element types
1955 STRUCTOP_STRUCT and STRUCTOP_PTR.
1957 If NOERR is nonzero, the returned structure will have field set to
1958 NULL if there is no component named NAME.
1960 If the component NAME is a field in an anonymous substructure of
1961 TYPE, the returned offset is a "global" offset relative to TYPE
1962 rather than an offset within the substructure. */
1964 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
1966 /* Given a type TYPE, lookup the type of the component named NAME.
1968 TYPE can be either a struct or union, or a pointer or reference to
1969 a struct or union. If it is a pointer or reference, its target
1970 type is automatically used. Thus '.' and '->' are interchangable,
1971 as specified for the definitions of the expression element types
1972 STRUCTOP_STRUCT and STRUCTOP_PTR.
1974 If NOERR is nonzero, return NULL if there is no component named
1977 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
1979 extern struct type
*make_pointer_type (struct type
*, struct type
**);
1981 extern struct type
*lookup_pointer_type (struct type
*);
1983 extern struct type
*make_function_type (struct type
*, struct type
**);
1985 extern struct type
*lookup_function_type (struct type
*);
1987 extern struct type
*lookup_function_type_with_arguments (struct type
*,
1991 extern struct type
*create_static_range_type (struct type
*, struct type
*,
1995 extern struct type
*create_array_type_with_stride
1996 (struct type
*, struct type
*, struct type
*,
1997 struct dynamic_prop
*, unsigned int);
1999 extern struct type
*create_range_type (struct type
*, struct type
*,
2000 const struct dynamic_prop
*,
2001 const struct dynamic_prop
*,
2004 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2005 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2008 extern struct type
* create_range_type_with_stride
2009 (struct type
*result_type
, struct type
*index_type
,
2010 const struct dynamic_prop
*low_bound
,
2011 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2012 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2014 extern struct type
*create_array_type (struct type
*, struct type
*,
2017 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2019 extern struct type
*create_string_type (struct type
*, struct type
*,
2021 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2023 extern struct type
*create_set_type (struct type
*, struct type
*);
2025 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2028 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2031 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2033 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2035 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2036 ADDR specifies the location of the variable the type is bound to.
2037 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2038 static properties is returned. */
2039 extern struct type
*resolve_dynamic_type (struct type
*type
,
2040 const gdb_byte
*valaddr
,
2043 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2044 extern int is_dynamic_type (struct type
*type
);
2046 /* * Return the dynamic property of the requested KIND from TYPE's
2047 list of dynamic properties. */
2048 extern struct dynamic_prop
*get_dyn_prop
2049 (enum dynamic_prop_node_kind kind
, const struct type
*type
);
2051 /* * Given a dynamic property PROP of a given KIND, add this dynamic
2052 property to the given TYPE.
2054 This function assumes that TYPE is objfile-owned. */
2055 extern void add_dyn_prop
2056 (enum dynamic_prop_node_kind kind
, struct dynamic_prop prop
,
2059 extern void remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2062 extern struct type
*check_typedef (struct type
*);
2064 extern void check_stub_method_group (struct type
*, int);
2066 extern char *gdb_mangle_name (struct type
*, int, int);
2068 extern struct type
*lookup_typename (const struct language_defn
*,
2069 const char *, const struct block
*, int);
2071 extern struct type
*lookup_template_type (const char *, struct type
*,
2072 const struct block
*);
2074 extern int get_vptr_fieldno (struct type
*, struct type
**);
2076 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2078 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2079 LONGEST
*high_bound
);
2081 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2083 extern int class_types_same_p (const struct type
*, const struct type
*);
2085 extern int is_ancestor (struct type
*, struct type
*);
2087 extern int is_public_ancestor (struct type
*, struct type
*);
2089 extern int is_unique_ancestor (struct type
*, struct value
*);
2091 /* Overload resolution */
2093 /* * Badness if parameter list length doesn't match arg list length. */
2094 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2096 /* * Dummy badness value for nonexistent parameter positions. */
2097 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2098 /* * Badness if no conversion among types. */
2099 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2101 /* * Badness of an exact match. */
2102 extern const struct rank EXACT_MATCH_BADNESS
;
2104 /* * Badness of integral promotion. */
2105 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2106 /* * Badness of floating promotion. */
2107 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2108 /* * Badness of converting a derived class pointer
2109 to a base class pointer. */
2110 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2111 /* * Badness of integral conversion. */
2112 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2113 /* * Badness of floating conversion. */
2114 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2115 /* * Badness of integer<->floating conversions. */
2116 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2117 /* * Badness of conversion of pointer to void pointer. */
2118 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2119 /* * Badness of conversion to boolean. */
2120 extern const struct rank BOOL_CONVERSION_BADNESS
;
2121 /* * Badness of converting derived to base class. */
2122 extern const struct rank BASE_CONVERSION_BADNESS
;
2123 /* * Badness of converting from non-reference to reference. Subrank
2124 is the type of reference conversion being done. */
2125 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2126 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2127 /* * Conversion to rvalue reference. */
2128 #define REFERENCE_CONVERSION_RVALUE 1
2129 /* * Conversion to const lvalue reference. */
2130 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2132 /* * Badness of converting integer 0 to NULL pointer. */
2133 extern const struct rank NULL_POINTER_CONVERSION
;
2134 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2136 extern const struct rank CV_CONVERSION_BADNESS
;
2137 #define CV_CONVERSION_CONST 1
2138 #define CV_CONVERSION_VOLATILE 2
2140 /* Non-standard conversions allowed by the debugger */
2142 /* * Converting a pointer to an int is usually OK. */
2143 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2145 /* * Badness of converting a (non-zero) integer constant
2147 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2149 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2150 extern int compare_ranks (struct rank a
, struct rank b
);
2152 extern int compare_badness (const badness_vector
&,
2153 const badness_vector
&);
2155 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2156 gdb::array_view
<value
*> args
);
2158 extern struct rank
rank_one_type (struct type
*, struct type
*,
2161 extern void recursive_dump_type (struct type
*, int);
2163 extern int field_is_static (struct field
*);
2167 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2168 const struct value_print_options
*,
2169 int, struct ui_file
*);
2171 extern int can_dereference (struct type
*);
2173 extern int is_integral_type (struct type
*);
2175 extern int is_floating_type (struct type
*);
2177 extern int is_scalar_type (struct type
*type
);
2179 extern int is_scalar_type_recursive (struct type
*);
2181 extern int class_or_union_p (const struct type
*);
2183 extern void maintenance_print_type (const char *, int);
2185 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2187 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2189 htab_t copied_types
);
2191 extern struct type
*copy_type (const struct type
*type
);
2193 extern bool types_equal (struct type
*, struct type
*);
2195 extern bool types_deeply_equal (struct type
*, struct type
*);
2197 extern int type_not_allocated (const struct type
*type
);
2199 extern int type_not_associated (const struct type
*type
);
2201 /* * When the type includes explicit byte ordering, return that.
2202 Otherwise, the byte ordering from gdbarch_byte_order for
2203 get_type_arch is returned. */
2205 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2207 /* A flag to enable printing of debugging information of C++
2210 extern unsigned int overload_debug
;
2212 #endif /* GDBTYPES_H */