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"
54 #include "gdb_obstack.h"
56 /* Forward declarations for prototypes. */
59 struct value_print_options
;
61 struct dwarf2_per_cu_data
;
62 struct dwarf2_per_objfile
;
64 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
65 are already DWARF-specific. */
67 /* * Offset relative to the start of its containing CU (compilation
69 DEFINE_OFFSET_TYPE (cu_offset
, unsigned int);
71 /* * Offset relative to the start of its .debug_info or .debug_types
73 DEFINE_OFFSET_TYPE (sect_offset
, uint64_t);
76 sect_offset_str (sect_offset offset
)
78 return hex_string (to_underlying (offset
));
81 /* Some macros for char-based bitfields. */
83 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
84 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
85 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
86 #define B_TYPE unsigned char
87 #define B_BYTES(x) ( 1 + ((x)>>3) )
88 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
90 /* * Different kinds of data types are distinguished by the `code'
95 TYPE_CODE_BITSTRING
= -1, /**< Deprecated */
96 TYPE_CODE_UNDEF
= 0, /**< Not used; catches errors */
97 TYPE_CODE_PTR
, /**< Pointer type */
99 /* * Array type with lower & upper bounds.
101 Regardless of the language, GDB represents multidimensional
102 array types the way C does: as arrays of arrays. So an
103 instance of a GDB array type T can always be seen as a series
104 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
107 Row-major languages like C lay out multi-dimensional arrays so
108 that incrementing the rightmost index in a subscripting
109 expression results in the smallest change in the address of the
110 element referred to. Column-major languages like Fortran lay
111 them out so that incrementing the leftmost index results in the
114 This means that, in column-major languages, working our way
115 from type to target type corresponds to working through indices
116 from right to left, not left to right. */
119 TYPE_CODE_STRUCT
, /**< C struct or Pascal record */
120 TYPE_CODE_UNION
, /**< C union or Pascal variant part */
121 TYPE_CODE_ENUM
, /**< Enumeration type */
122 TYPE_CODE_FLAGS
, /**< Bit flags type */
123 TYPE_CODE_FUNC
, /**< Function type */
124 TYPE_CODE_INT
, /**< Integer type */
126 /* * Floating type. This is *NOT* a complex type. */
129 /* * Void type. The length field specifies the length (probably
130 always one) which is used in pointer arithmetic involving
131 pointers to this type, but actually dereferencing such a
132 pointer is invalid; a void type has no length and no actual
133 representation in memory or registers. A pointer to a void
134 type is a generic pointer. */
137 TYPE_CODE_SET
, /**< Pascal sets */
138 TYPE_CODE_RANGE
, /**< Range (integers within spec'd bounds). */
140 /* * A string type which is like an array of character but prints
141 differently. It does not contain a length field as Pascal
142 strings (for many Pascals, anyway) do; if we want to deal with
143 such strings, we should use a new type code. */
146 /* * Unknown type. The length field is valid if we were able to
147 deduce that much about the type, or 0 if we don't even know
152 TYPE_CODE_METHOD
, /**< Method type */
154 /* * Pointer-to-member-function type. This describes how to access a
155 particular member function of a class (possibly a virtual
156 member function). The representation may vary between different
160 /* * Pointer-to-member type. This is the offset within a class to
161 some particular data member. The only currently supported
162 representation uses an unbiased offset, with -1 representing
163 NULL; this is used by the Itanium C++ ABI (used by GCC on all
167 TYPE_CODE_REF
, /**< C++ Reference types */
169 TYPE_CODE_RVALUE_REF
, /**< C++ rvalue reference types */
171 TYPE_CODE_CHAR
, /**< *real* character type */
173 /* * Boolean type. 0 is false, 1 is true, and other values are
174 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
178 TYPE_CODE_COMPLEX
, /**< Complex float */
182 TYPE_CODE_NAMESPACE
, /**< C++ namespace. */
184 TYPE_CODE_DECFLOAT
, /**< Decimal floating point. */
186 TYPE_CODE_MODULE
, /**< Fortran module. */
188 /* * Internal function type. */
189 TYPE_CODE_INTERNAL_FUNCTION
,
191 /* * Methods implemented in extension languages. */
195 /* * Some bits for the type's instance_flags word. See the macros
196 below for documentation on each bit. */
198 enum type_instance_flag_value
: unsigned
200 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
201 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
202 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
203 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
204 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
205 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5),
206 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
207 TYPE_INSTANCE_FLAG_RESTRICT
= (1 << 7),
208 TYPE_INSTANCE_FLAG_ATOMIC
= (1 << 8)
211 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value
, type_instance_flags
);
213 /* * Not textual. By default, GDB treats all single byte integers as
214 characters (or elements of strings) unless this flag is set. */
216 #define TYPE_NOTTEXT(t) (((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_NOTTEXT)
218 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
219 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
220 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
222 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
223 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
224 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
226 /* * True if this type was declared using the "class" keyword. This is
227 only valid for C++ structure and enum types. If false, a structure
228 was declared as a "struct"; if true it was declared "class". For
229 enum types, this is true when "enum class" or "enum struct" was
230 used to declare the type.. */
232 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
234 /* * True if this type is a "flag" enum. A flag enum is one where all
235 the values are pairwise disjoint when "and"ed together. This
236 affects how enum values are printed. */
238 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
240 /* * Constant type. If this is set, the corresponding type has a
243 #define TYPE_CONST(t) ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_CONST) != 0)
245 /* * Volatile type. If this is set, the corresponding type has a
246 volatile modifier. */
248 #define TYPE_VOLATILE(t) \
249 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
251 /* * Restrict type. If this is set, the corresponding type has a
252 restrict modifier. */
254 #define TYPE_RESTRICT(t) \
255 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
257 /* * Atomic type. If this is set, the corresponding type has an
260 #define TYPE_ATOMIC(t) \
261 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
263 /* * True if this type represents either an lvalue or lvalue reference type. */
265 #define TYPE_IS_REFERENCE(t) \
266 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
268 /* * True if this type is allocatable. */
269 #define TYPE_IS_ALLOCATABLE(t) \
270 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
272 /* * True if this type has variant parts. */
273 #define TYPE_HAS_VARIANT_PARTS(t) \
274 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
276 /* * True if this type has a dynamic length. */
277 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
278 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
280 /* * Instruction-space delimited type. This is for Harvard architectures
281 which have separate instruction and data address spaces (and perhaps
284 GDB usually defines a flat address space that is a superset of the
285 architecture's two (or more) address spaces, but this is an extension
286 of the architecture's model.
288 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
289 resides in instruction memory, even if its address (in the extended
290 flat address space) does not reflect this.
292 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
293 corresponding type resides in the data memory space, even if
294 this is not indicated by its (flat address space) address.
296 If neither flag is set, the default space for functions / methods
297 is instruction space, and for data objects is data memory. */
299 #define TYPE_CODE_SPACE(t) \
300 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
302 #define TYPE_DATA_SPACE(t) \
303 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
305 /* * Address class flags. Some environments provide for pointers
306 whose size is different from that of a normal pointer or address
307 types where the bits are interpreted differently than normal
308 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
309 target specific ways to represent these different types of address
312 #define TYPE_ADDRESS_CLASS_1(t) (((t)->instance_flags ()) \
313 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
314 #define TYPE_ADDRESS_CLASS_2(t) (((t)->instance_flags ()) \
315 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
316 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
317 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
318 #define TYPE_ADDRESS_CLASS_ALL(t) (((t)->instance_flags ()) \
319 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
321 /* * Information about a single discriminant. */
323 struct discriminant_range
325 /* * The range of values for the variant. This is an inclusive
329 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
330 is true if this should be an unsigned comparison; false for
332 bool contains (ULONGEST value
, bool is_unsigned
) const
335 return value
>= low
&& value
<= high
;
336 LONGEST valuel
= (LONGEST
) value
;
337 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
343 /* * A single variant. A variant has a list of discriminant values.
344 When the discriminator matches one of these, the variant is
345 enabled. Each variant controls zero or more fields; and may also
346 control other variant parts as well. This struct corresponds to
347 DW_TAG_variant in DWARF. */
349 struct variant
: allocate_on_obstack
351 /* * The discriminant ranges for this variant. */
352 gdb::array_view
<discriminant_range
> discriminants
;
354 /* * The fields controlled by this variant. This is inclusive on
355 the low end and exclusive on the high end. A variant may not
356 control any fields, in which case the two values will be equal.
357 These are indexes into the type's array of fields. */
361 /* * Variant parts controlled by this variant. */
362 gdb::array_view
<variant_part
> parts
;
364 /* * Return true if this is the default variant. The default
365 variant can be recognized because it has no associated
367 bool is_default () const
369 return discriminants
.empty ();
372 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
373 if this should be an unsigned comparison; false for signed. */
374 bool matches (ULONGEST value
, bool is_unsigned
) const;
377 /* * A variant part. Each variant part has an optional discriminant
378 and holds an array of variants. This struct corresponds to
379 DW_TAG_variant_part in DWARF. */
381 struct variant_part
: allocate_on_obstack
383 /* * The index of the discriminant field in the outer type. This is
384 an index into the type's array of fields. If this is -1, there
385 is no discriminant, and only the default variant can be
386 considered to be selected. */
387 int discriminant_index
;
389 /* * True if this discriminant is unsigned; false if signed. This
390 comes from the type of the discriminant. */
393 /* * The variants that are controlled by this variant part. Note
394 that these will always be sorted by field number. */
395 gdb::array_view
<variant
> variants
;
399 enum dynamic_prop_kind
401 PROP_UNDEFINED
, /* Not defined. */
402 PROP_CONST
, /* Constant. */
403 PROP_ADDR_OFFSET
, /* Address offset. */
404 PROP_LOCEXPR
, /* Location expression. */
405 PROP_LOCLIST
, /* Location list. */
406 PROP_VARIANT_PARTS
, /* Variant parts. */
407 PROP_TYPE
, /* Type. */
410 union dynamic_prop_data
412 /* Storage for constant property. */
416 /* Storage for dynamic property. */
420 /* Storage of variant parts for a type. A type with variant parts
421 has all its fields "linearized" -- stored in a single field
422 array, just as if they had all been declared that way. The
423 variant parts are attached via a dynamic property, and then are
424 used to control which fields end up in the final type during
425 dynamic type resolution. */
427 const gdb::array_view
<variant_part
> *variant_parts
;
429 /* Once a variant type is resolved, we may want to be able to go
430 from the resolved type to the original type. In this case we
431 rewrite the property's kind and set this field. */
433 struct type
*original_type
;
436 /* * Used to store a dynamic property. */
440 dynamic_prop_kind
kind () const
445 void set_undefined ()
447 m_kind
= PROP_UNDEFINED
;
450 LONGEST
const_val () const
452 gdb_assert (m_kind
== PROP_CONST
);
454 return m_data
.const_val
;
457 void set_const_val (LONGEST const_val
)
460 m_data
.const_val
= const_val
;
465 gdb_assert (m_kind
== PROP_LOCEXPR
466 || m_kind
== PROP_LOCLIST
467 || m_kind
== PROP_ADDR_OFFSET
);
472 void set_locexpr (void *baton
)
474 m_kind
= PROP_LOCEXPR
;
475 m_data
.baton
= baton
;
478 void set_loclist (void *baton
)
480 m_kind
= PROP_LOCLIST
;
481 m_data
.baton
= baton
;
484 void set_addr_offset (void *baton
)
486 m_kind
= PROP_ADDR_OFFSET
;
487 m_data
.baton
= baton
;
490 const gdb::array_view
<variant_part
> *variant_parts () const
492 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
494 return m_data
.variant_parts
;
497 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
499 m_kind
= PROP_VARIANT_PARTS
;
500 m_data
.variant_parts
= variant_parts
;
503 struct type
*original_type () const
505 gdb_assert (m_kind
== PROP_TYPE
);
507 return m_data
.original_type
;
510 void set_original_type (struct type
*original_type
)
513 m_data
.original_type
= original_type
;
516 /* Determine which field of the union dynamic_prop.data is used. */
517 enum dynamic_prop_kind m_kind
;
519 /* Storage for dynamic or static value. */
520 union dynamic_prop_data m_data
;
523 /* Compare two dynamic_prop objects for equality. dynamic_prop
524 instances are equal iff they have the same type and storage. */
525 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
527 /* Compare two dynamic_prop objects for inequality. */
528 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
533 /* * Define a type's dynamic property node kind. */
534 enum dynamic_prop_node_kind
536 /* A property providing a type's data location.
537 Evaluating this field yields to the location of an object's data. */
538 DYN_PROP_DATA_LOCATION
,
540 /* A property representing DW_AT_allocated. The presence of this attribute
541 indicates that the object of the type can be allocated/deallocated. */
544 /* A property representing DW_AT_associated. The presence of this attribute
545 indicated that the object of the type can be associated. */
548 /* A property providing an array's byte stride. */
549 DYN_PROP_BYTE_STRIDE
,
551 /* A property holding variant parts. */
552 DYN_PROP_VARIANT_PARTS
,
554 /* A property holding the size of the type. */
558 /* * List for dynamic type attributes. */
559 struct dynamic_prop_list
561 /* The kind of dynamic prop in this node. */
562 enum dynamic_prop_node_kind prop_kind
;
564 /* The dynamic property itself. */
565 struct dynamic_prop prop
;
567 /* A pointer to the next dynamic property. */
568 struct dynamic_prop_list
*next
;
571 /* * Determine which field of the union main_type.fields[x].loc is
576 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
577 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
578 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
579 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
580 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
583 /* * A discriminant to determine which field in the
584 main_type.type_specific union is being used, if any.
586 For types such as TYPE_CODE_FLT, the use of this
587 discriminant is really redundant, as we know from the type code
588 which field is going to be used. As such, it would be possible to
589 reduce the size of this enum in order to save a bit or two for
590 other fields of struct main_type. But, since we still have extra
591 room , and for the sake of clarity and consistency, we treat all fields
592 of the union the same way. */
594 enum type_specific_kind
597 TYPE_SPECIFIC_CPLUS_STUFF
,
598 TYPE_SPECIFIC_GNAT_STUFF
,
599 TYPE_SPECIFIC_FLOATFORMAT
,
600 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
602 TYPE_SPECIFIC_SELF_TYPE
607 struct objfile
*objfile
;
608 struct gdbarch
*gdbarch
;
613 /* * Position of this field, counting in bits from start of
614 containing structure. For big-endian targets, it is the bit
615 offset to the MSB. For little-endian targets, it is the bit
616 offset to the LSB. */
623 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
624 physaddr is the location (in the target) of the static
625 field. Otherwise, physname is the mangled label of the
629 const char *physname
;
631 /* * The field location can be computed by evaluating the
632 following DWARF block. Its DATA is allocated on
633 objfile_obstack - no CU load is needed to access it. */
635 struct dwarf2_locexpr_baton
*dwarf_block
;
640 struct type
*type () const
645 void set_type (struct type
*type
)
650 union field_location loc
;
652 /* * For a function or member type, this is 1 if the argument is
653 marked artificial. Artificial arguments should not be shown
654 to the user. For TYPE_CODE_RANGE it is set if the specific
655 bound is not defined. */
657 unsigned int artificial
: 1;
659 /* * Discriminant for union field_location. */
661 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
663 /* * Size of this field, in bits, or zero if not packed.
664 If non-zero in an array type, indicates the element size in
665 bits (used only in Ada at the moment).
666 For an unpacked field, the field's type's length
667 says how many bytes the field occupies. */
669 unsigned int bitsize
: 28;
671 /* * In a struct or union type, type of this field.
672 - In a function or member type, type of this argument.
673 - In an array type, the domain-type of the array. */
677 /* * Name of field, value or argument.
678 NULL for range bounds, array domains, and member function
686 ULONGEST
bit_stride () const
688 if (this->flag_is_byte_stride
)
689 return this->stride
.const_val () * 8;
691 return this->stride
.const_val ();
694 /* * Low bound of range. */
696 struct dynamic_prop low
;
698 /* * High bound of range. */
700 struct dynamic_prop high
;
702 /* The stride value for this range. This can be stored in bits or bytes
703 based on the value of BYTE_STRIDE_P. It is optional to have a stride
704 value, if this range has no stride value defined then this will be set
705 to the constant zero. */
707 struct dynamic_prop stride
;
709 /* * The bias. Sometimes a range value is biased before storage.
710 The bias is added to the stored bits to form the true value. */
714 /* True if HIGH range bound contains the number of elements in the
715 subrange. This affects how the final high bound is computed. */
717 unsigned int flag_upper_bound_is_count
: 1;
719 /* True if LOW or/and HIGH are resolved into a static bound from
722 unsigned int flag_bound_evaluated
: 1;
724 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
726 unsigned int flag_is_byte_stride
: 1;
729 /* Compare two range_bounds objects for equality. Simply does
730 memberwise comparison. */
731 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
733 /* Compare two range_bounds objects for inequality. */
734 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
741 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
742 point to cplus_struct_default, a default static instance of a
743 struct cplus_struct_type. */
745 struct cplus_struct_type
*cplus_stuff
;
747 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
748 provides additional information. */
750 struct gnat_aux_type
*gnat_stuff
;
752 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
753 floatformat object that describes the floating-point value
754 that resides within the type. */
756 const struct floatformat
*floatformat
;
758 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
760 struct func_type
*func_stuff
;
762 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
763 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
766 struct type
*self_type
;
769 /* * Main structure representing a type in GDB.
771 This structure is space-critical. Its layout has been tweaked to
772 reduce the space used. */
776 /* * Code for kind of type. */
778 ENUM_BITFIELD(type_code
) code
: 8;
780 /* * Flags about this type. These fields appear at this location
781 because they packs nicely here. See the TYPE_* macros for
782 documentation about these fields. */
784 unsigned int m_flag_unsigned
: 1;
785 unsigned int m_flag_nosign
: 1;
786 unsigned int m_flag_stub
: 1;
787 unsigned int m_flag_target_stub
: 1;
788 unsigned int m_flag_prototyped
: 1;
789 unsigned int m_flag_varargs
: 1;
790 unsigned int m_flag_vector
: 1;
791 unsigned int m_flag_stub_supported
: 1;
792 unsigned int m_flag_gnu_ifunc
: 1;
793 unsigned int m_flag_fixed_instance
: 1;
794 unsigned int flag_objfile_owned
: 1;
795 unsigned int m_flag_endianity_not_default
: 1;
797 /* * True if this type was declared with "class" rather than
800 unsigned int flag_declared_class
: 1;
802 /* * True if this is an enum type with disjoint values. This
803 affects how the enum is printed. */
805 unsigned int flag_flag_enum
: 1;
807 /* * A discriminant telling us which field of the type_specific
808 union is being used for this type, if any. */
810 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
812 /* * Number of fields described for this type. This field appears
813 at this location because it packs nicely here. */
817 /* * Name of this type, or NULL if none.
819 This is used for printing only. For looking up a name, look for
820 a symbol in the VAR_DOMAIN. This is generally allocated in the
821 objfile's obstack. However coffread.c uses malloc. */
825 /* * Every type is now associated with a particular objfile, and the
826 type is allocated on the objfile_obstack for that objfile. One
827 problem however, is that there are times when gdb allocates new
828 types while it is not in the process of reading symbols from a
829 particular objfile. Fortunately, these happen when the type
830 being created is a derived type of an existing type, such as in
831 lookup_pointer_type(). So we can just allocate the new type
832 using the same objfile as the existing type, but to do this we
833 need a backpointer to the objfile from the existing type. Yes
834 this is somewhat ugly, but without major overhaul of the internal
835 type system, it can't be avoided for now. */
837 union type_owner owner
;
839 /* * For a pointer type, describes the type of object pointed to.
840 - For an array type, describes the type of the elements.
841 - For a function or method type, describes the type of the return value.
842 - For a range type, describes the type of the full range.
843 - For a complex type, describes the type of each coordinate.
844 - For a special record or union type encoding a dynamic-sized type
845 in GNAT, a memoized pointer to a corresponding static version of
847 - Unused otherwise. */
849 struct type
*target_type
;
851 /* * For structure and union types, a description of each field.
852 For set and pascal array types, there is one "field",
853 whose type is the domain type of the set or array.
854 For range types, there are two "fields",
855 the minimum and maximum values (both inclusive).
856 For enum types, each possible value is described by one "field".
857 For a function or method type, a "field" for each parameter.
858 For C++ classes, there is one field for each base class (if it is
859 a derived class) plus one field for each class data member. Member
860 functions are recorded elsewhere.
862 Using a pointer to a separate array of fields
863 allows all types to have the same size, which is useful
864 because we can allocate the space for a type before
865 we know what to put in it. */
869 struct field
*fields
;
871 /* * Union member used for range types. */
873 struct range_bounds
*bounds
;
875 /* If this is a scalar type, then this is its corresponding
877 struct type
*complex_type
;
881 /* * Slot to point to additional language-specific fields of this
884 union type_specific type_specific
;
886 /* * Contains all dynamic type properties. */
887 struct dynamic_prop_list
*dyn_prop_list
;
890 /* * Number of bits allocated for alignment. */
892 #define TYPE_ALIGN_BITS 8
894 /* * A ``struct type'' describes a particular instance of a type, with
895 some particular qualification. */
899 /* Get the type code of this type.
901 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
902 type, you need to do `check_typedef (type)->code ()`. */
903 type_code
code () const
905 return this->main_type
->code
;
908 /* Set the type code of this type. */
909 void set_code (type_code code
)
911 this->main_type
->code
= code
;
914 /* Get the name of this type. */
915 const char *name () const
917 return this->main_type
->name
;
920 /* Set the name of this type. */
921 void set_name (const char *name
)
923 this->main_type
->name
= name
;
926 /* Get the number of fields of this type. */
927 int num_fields () const
929 return this->main_type
->nfields
;
932 /* Set the number of fields of this type. */
933 void set_num_fields (int num_fields
)
935 this->main_type
->nfields
= num_fields
;
938 /* Get the fields array of this type. */
939 struct field
*fields () const
941 return this->main_type
->flds_bnds
.fields
;
944 /* Get the field at index IDX. */
945 struct field
&field (int idx
) const
947 return this->fields ()[idx
];
950 /* Set the fields array of this type. */
951 void set_fields (struct field
*fields
)
953 this->main_type
->flds_bnds
.fields
= fields
;
956 type
*index_type () const
958 return this->field (0).type ();
961 void set_index_type (type
*index_type
)
963 this->field (0).set_type (index_type
);
966 /* Return the instance flags converted to the correct type. */
967 const type_instance_flags
instance_flags () const
969 return (enum type_instance_flag_value
) this->m_instance_flags
;
972 /* Set the instance flags. */
973 void set_instance_flags (type_instance_flags flags
)
975 this->m_instance_flags
= flags
;
978 /* Get the bounds bounds of this type. The type must be a range type. */
979 range_bounds
*bounds () const
981 switch (this->code ())
983 case TYPE_CODE_RANGE
:
984 return this->main_type
->flds_bnds
.bounds
;
986 case TYPE_CODE_ARRAY
:
987 case TYPE_CODE_STRING
:
988 return this->index_type ()->bounds ();
991 gdb_assert_not_reached
992 ("type::bounds called on type with invalid code");
996 /* Set the bounds of this type. The type must be a range type. */
997 void set_bounds (range_bounds
*bounds
)
999 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1001 this->main_type
->flds_bnds
.bounds
= bounds
;
1004 ULONGEST
bit_stride () const
1006 return this->bounds ()->bit_stride ();
1009 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1010 the type is signed (unless TYPE_NOSIGN is set). */
1012 bool is_unsigned () const
1014 return this->main_type
->m_flag_unsigned
;
1017 void set_is_unsigned (bool is_unsigned
)
1019 this->main_type
->m_flag_unsigned
= is_unsigned
;
1022 /* No sign for this type. In C++, "char", "signed char", and
1023 "unsigned char" are distinct types; so we need an extra flag to
1024 indicate the absence of a sign! */
1026 bool has_no_signedness () const
1028 return this->main_type
->m_flag_nosign
;
1031 void set_has_no_signedness (bool has_no_signedness
)
1033 this->main_type
->m_flag_nosign
= has_no_signedness
;
1036 /* This appears in a type's flags word if it is a stub type (e.g.,
1037 if someone referenced a type that wasn't defined in a source file
1038 via (struct sir_not_appearing_in_this_film *)). */
1040 bool is_stub () const
1042 return this->main_type
->m_flag_stub
;
1045 void set_is_stub (bool is_stub
)
1047 this->main_type
->m_flag_stub
= is_stub
;
1050 /* The target type of this type is a stub type, and this type needs
1051 to be updated if it gets un-stubbed in check_typedef. Used for
1052 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
1053 based on the TYPE_LENGTH of the target type. Also, set for
1054 TYPE_CODE_TYPEDEF. */
1056 bool target_is_stub () const
1058 return this->main_type
->m_flag_target_stub
;
1061 void set_target_is_stub (bool target_is_stub
)
1063 this->main_type
->m_flag_target_stub
= target_is_stub
;
1066 /* This is a function type which appears to have a prototype. We
1067 need this for function calls in order to tell us if it's necessary
1068 to coerce the args, or to just do the standard conversions. This
1069 is used with a short field. */
1071 bool is_prototyped () const
1073 return this->main_type
->m_flag_prototyped
;
1076 void set_is_prototyped (bool is_prototyped
)
1078 this->main_type
->m_flag_prototyped
= is_prototyped
;
1081 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
1084 bool has_varargs () const
1086 return this->main_type
->m_flag_varargs
;
1089 void set_has_varargs (bool has_varargs
)
1091 this->main_type
->m_flag_varargs
= has_varargs
;
1094 /* Identify a vector type. Gcc is handling this by adding an extra
1095 attribute to the array type. We slurp that in as a new flag of a
1096 type. This is used only in dwarf2read.c. */
1098 bool is_vector () const
1100 return this->main_type
->m_flag_vector
;
1103 void set_is_vector (bool is_vector
)
1105 this->main_type
->m_flag_vector
= is_vector
;
1108 /* This debug target supports TYPE_STUB(t). In the unsupported case
1109 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
1110 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
1111 guessed the TYPE_STUB(t) value (see dwarfread.c). */
1113 bool stub_is_supported () const
1115 return this->main_type
->m_flag_stub_supported
;
1118 void set_stub_is_supported (bool stub_is_supported
)
1120 this->main_type
->m_flag_stub_supported
= stub_is_supported
;
1123 /* Used only for TYPE_CODE_FUNC where it specifies the real function
1124 address is returned by this function call. TYPE_TARGET_TYPE
1125 determines the final returned function type to be presented to
1128 bool is_gnu_ifunc () const
1130 return this->main_type
->m_flag_gnu_ifunc
;
1133 void set_is_gnu_ifunc (bool is_gnu_ifunc
)
1135 this->main_type
->m_flag_gnu_ifunc
= is_gnu_ifunc
;
1138 /* The debugging formats (especially STABS) do not contain enough
1139 information to represent all Ada types---especially those whose
1140 size depends on dynamic quantities. Therefore, the GNAT Ada
1141 compiler includes extra information in the form of additional type
1142 definitions connected by naming conventions. This flag indicates
1143 that the type is an ordinary (unencoded) GDB type that has been
1144 created from the necessary run-time information, and does not need
1145 further interpretation. Optionally marks ordinary, fixed-size GDB
1148 bool is_fixed_instance () const
1150 return this->main_type
->m_flag_fixed_instance
;
1153 void set_is_fixed_instance (bool is_fixed_instance
)
1155 this->main_type
->m_flag_fixed_instance
= is_fixed_instance
;
1158 /* A compiler may supply dwarf instrumentation that indicates the desired
1159 endian interpretation of the variable differs from the native endian
1162 bool endianity_is_not_default () const
1164 return this->main_type
->m_flag_endianity_not_default
;
1167 void set_endianity_is_not_default (bool endianity_is_not_default
)
1169 this->main_type
->m_flag_endianity_not_default
= endianity_is_not_default
;
1172 /* * Return the dynamic property of the requested KIND from this type's
1173 list of dynamic properties. */
1174 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1176 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1177 property to this type.
1179 This function assumes that this type is objfile-owned. */
1180 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1182 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1183 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1185 /* * Type that is a pointer to this type.
1186 NULL if no such pointer-to type is known yet.
1187 The debugger may add the address of such a type
1188 if it has to construct one later. */
1190 struct type
*pointer_type
;
1192 /* * C++: also need a reference type. */
1194 struct type
*reference_type
;
1196 /* * A C++ rvalue reference type added in C++11. */
1198 struct type
*rvalue_reference_type
;
1200 /* * Variant chain. This points to a type that differs from this
1201 one only in qualifiers and length. Currently, the possible
1202 qualifiers are const, volatile, code-space, data-space, and
1203 address class. The length may differ only when one of the
1204 address class flags are set. The variants are linked in a
1205 circular ring and share MAIN_TYPE. */
1209 /* * The alignment for this type. Zero means that the alignment was
1210 not specified in the debug info. Note that this is stored in a
1211 funny way: as the log base 2 (plus 1) of the alignment; so a
1212 value of 1 means the alignment is 1, and a value of 9 means the
1213 alignment is 256. */
1215 unsigned align_log2
: TYPE_ALIGN_BITS
;
1217 /* * Flags specific to this instance of the type, indicating where
1220 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1221 binary or-ed with the target type, with a special case for
1222 address class and space class. For example if this typedef does
1223 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1224 instance flags are completely inherited from the target type. No
1225 qualifiers can be cleared by the typedef. See also
1227 unsigned m_instance_flags
: 9;
1229 /* * Length of storage for a value of this type. The value is the
1230 expression in host bytes of what sizeof(type) would return. This
1231 size includes padding. For example, an i386 extended-precision
1232 floating point value really only occupies ten bytes, but most
1233 ABI's declare its size to be 12 bytes, to preserve alignment.
1234 A `struct type' representing such a floating-point type would
1235 have a `length' value of 12, even though the last two bytes are
1238 Since this field is expressed in host bytes, its value is appropriate
1239 to pass to memcpy and such (it is assumed that GDB itself always runs
1240 on an 8-bits addressable architecture). However, when using it for
1241 target address arithmetic (e.g. adding it to a target address), the
1242 type_length_units function should be used in order to get the length
1243 expressed in target addressable memory units. */
1247 /* * Core type, shared by a group of qualified types. */
1249 struct main_type
*main_type
;
1255 /* * The overloaded name.
1256 This is generally allocated in the objfile's obstack.
1257 However stabsread.c sometimes uses malloc. */
1261 /* * The number of methods with this name. */
1265 /* * The list of methods. */
1267 struct fn_field
*fn_fields
;
1274 /* * If is_stub is clear, this is the mangled name which we can look
1275 up to find the address of the method (FIXME: it would be cleaner
1276 to have a pointer to the struct symbol here instead).
1278 If is_stub is set, this is the portion of the mangled name which
1279 specifies the arguments. For example, "ii", if there are two int
1280 arguments, or "" if there are no arguments. See gdb_mangle_name
1281 for the conversion from this format to the one used if is_stub is
1284 const char *physname
;
1286 /* * The function type for the method.
1288 (This comment used to say "The return value of the method", but
1289 that's wrong. The function type is expected here, i.e. something
1290 with TYPE_CODE_METHOD, and *not* the return-value type). */
1294 /* * For virtual functions. First baseclass that defines this
1295 virtual function. */
1297 struct type
*fcontext
;
1301 unsigned int is_const
:1;
1302 unsigned int is_volatile
:1;
1303 unsigned int is_private
:1;
1304 unsigned int is_protected
:1;
1305 unsigned int is_artificial
:1;
1307 /* * A stub method only has some fields valid (but they are enough
1308 to reconstruct the rest of the fields). */
1310 unsigned int is_stub
:1;
1312 /* * True if this function is a constructor, false otherwise. */
1314 unsigned int is_constructor
: 1;
1316 /* * True if this function is deleted, false otherwise. */
1318 unsigned int is_deleted
: 1;
1320 /* * DW_AT_defaulted attribute for this function. The value is one
1321 of the DW_DEFAULTED constants. */
1323 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1327 unsigned int dummy
:6;
1329 /* * Index into that baseclass's virtual function table, minus 2;
1330 else if static: VOFFSET_STATIC; else: 0. */
1332 unsigned int voffset
:16;
1334 #define VOFFSET_STATIC 1
1340 /* * Unqualified name to be prefixed by owning class qualified
1345 /* * Type this typedef named NAME represents. */
1349 /* * True if this field was declared protected, false otherwise. */
1350 unsigned int is_protected
: 1;
1352 /* * True if this field was declared private, false otherwise. */
1353 unsigned int is_private
: 1;
1356 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1357 TYPE_CODE_UNION nodes. */
1359 struct cplus_struct_type
1361 /* * Number of base classes this type derives from. The
1362 baseclasses are stored in the first N_BASECLASSES fields
1363 (i.e. the `fields' field of the struct type). The only fields
1364 of struct field that are used are: type, name, loc.bitpos. */
1366 short n_baseclasses
;
1368 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1369 All access to this field must be through TYPE_VPTR_FIELDNO as one
1370 thing it does is check whether the field has been initialized.
1371 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1372 which for portability reasons doesn't initialize this field.
1373 TYPE_VPTR_FIELDNO returns -1 for this case.
1375 If -1, we were unable to find the virtual function table pointer in
1376 initial symbol reading, and get_vptr_fieldno should be called to find
1377 it if possible. get_vptr_fieldno will update this field if possible.
1378 Otherwise the value is left at -1.
1380 Unused if this type does not have virtual functions. */
1384 /* * Number of methods with unique names. All overloaded methods
1385 with the same name count only once. */
1389 /* * Number of template arguments. */
1391 unsigned short n_template_arguments
;
1393 /* * One if this struct is a dynamic class, as defined by the
1394 Itanium C++ ABI: if it requires a virtual table pointer,
1395 because it or any of its base classes have one or more virtual
1396 member functions or virtual base classes. Minus one if not
1397 dynamic. Zero if not yet computed. */
1401 /* * The calling convention for this type, fetched from the
1402 DW_AT_calling_convention attribute. The value is one of the
1405 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1407 /* * The base class which defined the virtual function table pointer. */
1409 struct type
*vptr_basetype
;
1411 /* * For derived classes, the number of base classes is given by
1412 n_baseclasses and virtual_field_bits is a bit vector containing
1413 one bit per base class. If the base class is virtual, the
1414 corresponding bit will be set.
1419 class C : public B, public virtual A {};
1421 B is a baseclass of C; A is a virtual baseclass for C.
1422 This is a C++ 2.0 language feature. */
1424 B_TYPE
*virtual_field_bits
;
1426 /* * For classes with private fields, the number of fields is
1427 given by nfields and private_field_bits is a bit vector
1428 containing one bit per field.
1430 If the field is private, the corresponding bit will be set. */
1432 B_TYPE
*private_field_bits
;
1434 /* * For classes with protected fields, the number of fields is
1435 given by nfields and protected_field_bits is a bit vector
1436 containing one bit per field.
1438 If the field is private, the corresponding bit will be set. */
1440 B_TYPE
*protected_field_bits
;
1442 /* * For classes with fields to be ignored, either this is
1443 optimized out or this field has length 0. */
1445 B_TYPE
*ignore_field_bits
;
1447 /* * For classes, structures, and unions, a description of each
1448 field, which consists of an overloaded name, followed by the
1449 types of arguments that the method expects, and then the name
1450 after it has been renamed to make it distinct.
1452 fn_fieldlists points to an array of nfn_fields of these. */
1454 struct fn_fieldlist
*fn_fieldlists
;
1456 /* * typedefs defined inside this class. typedef_field points to
1457 an array of typedef_field_count elements. */
1459 struct decl_field
*typedef_field
;
1461 unsigned typedef_field_count
;
1463 /* * The nested types defined by this type. nested_types points to
1464 an array of nested_types_count elements. */
1466 struct decl_field
*nested_types
;
1468 unsigned nested_types_count
;
1470 /* * The template arguments. This is an array with
1471 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1474 struct symbol
**template_arguments
;
1477 /* * Struct used to store conversion rankings. */
1483 /* * When two conversions are of the same type and therefore have
1484 the same rank, subrank is used to differentiate the two.
1486 Eg: Two derived-class-pointer to base-class-pointer conversions
1487 would both have base pointer conversion rank, but the
1488 conversion with the shorter distance to the ancestor is
1489 preferable. 'subrank' would be used to reflect that. */
1494 /* * Used for ranking a function for overload resolution. */
1496 typedef std::vector
<rank
> badness_vector
;
1498 /* * GNAT Ada-specific information for various Ada types. */
1500 struct gnat_aux_type
1502 /* * Parallel type used to encode information about dynamic types
1503 used in Ada (such as variant records, variable-size array,
1505 struct type
* descriptive_type
;
1508 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1512 /* * The calling convention for targets supporting multiple ABIs.
1513 Right now this is only fetched from the Dwarf-2
1514 DW_AT_calling_convention attribute. The value is one of the
1517 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1519 /* * Whether this function normally returns to its caller. It is
1520 set from the DW_AT_noreturn attribute if set on the
1521 DW_TAG_subprogram. */
1523 unsigned int is_noreturn
: 1;
1525 /* * Only those DW_TAG_call_site's in this function that have
1526 DW_AT_call_tail_call set are linked in this list. Function
1527 without its tail call list complete
1528 (DW_AT_call_all_tail_calls or its superset
1529 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1530 DW_TAG_call_site's exist in such function. */
1532 struct call_site
*tail_call_list
;
1534 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1535 contains the method. */
1537 struct type
*self_type
;
1540 /* struct call_site_parameter can be referenced in callees by several ways. */
1542 enum call_site_parameter_kind
1544 /* * Use field call_site_parameter.u.dwarf_reg. */
1545 CALL_SITE_PARAMETER_DWARF_REG
,
1547 /* * Use field call_site_parameter.u.fb_offset. */
1548 CALL_SITE_PARAMETER_FB_OFFSET
,
1550 /* * Use field call_site_parameter.u.param_offset. */
1551 CALL_SITE_PARAMETER_PARAM_OFFSET
1554 struct call_site_target
1556 union field_location loc
;
1558 /* * Discriminant for union field_location. */
1560 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1563 union call_site_parameter_u
1565 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1566 as DWARF register number, for register passed
1571 /* * Offset from the callee's frame base, for stack passed
1572 parameters. This equals offset from the caller's stack
1575 CORE_ADDR fb_offset
;
1577 /* * Offset relative to the start of this PER_CU to
1578 DW_TAG_formal_parameter which is referenced by both
1579 caller and the callee. */
1581 cu_offset param_cu_off
;
1584 struct call_site_parameter
1586 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1588 union call_site_parameter_u u
;
1590 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1592 const gdb_byte
*value
;
1595 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1596 It may be NULL if not provided by DWARF. */
1598 const gdb_byte
*data_value
;
1599 size_t data_value_size
;
1602 /* * A place where a function gets called from, represented by
1603 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1607 /* * Address of the first instruction after this call. It must be
1608 the first field as we overload core_addr_hash and core_addr_eq
1613 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1615 struct call_site
*tail_call_next
;
1617 /* * Describe DW_AT_call_target. Missing attribute uses
1618 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1620 struct call_site_target target
;
1622 /* * Size of the PARAMETER array. */
1624 unsigned parameter_count
;
1626 /* * CU of the function where the call is located. It gets used
1627 for DWARF blocks execution in the parameter array below. */
1629 dwarf2_per_cu_data
*per_cu
;
1631 /* objfile of the function where the call is located. */
1633 dwarf2_per_objfile
*per_objfile
;
1635 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1637 struct call_site_parameter parameter
[1];
1640 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1641 static structure. */
1643 extern const struct cplus_struct_type cplus_struct_default
;
1645 extern void allocate_cplus_struct_type (struct type
*);
1647 #define INIT_CPLUS_SPECIFIC(type) \
1648 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1649 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1650 &cplus_struct_default)
1652 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1654 #define HAVE_CPLUS_STRUCT(type) \
1655 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1656 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1658 #define INIT_NONE_SPECIFIC(type) \
1659 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1660 TYPE_MAIN_TYPE (type)->type_specific = {})
1662 extern const struct gnat_aux_type gnat_aux_default
;
1664 extern void allocate_gnat_aux_type (struct type
*);
1666 #define INIT_GNAT_SPECIFIC(type) \
1667 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1668 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1669 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1670 /* * A macro that returns non-zero if the type-specific data should be
1671 read as "gnat-stuff". */
1672 #define HAVE_GNAT_AUX_INFO(type) \
1673 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1675 /* * True if TYPE is known to be an Ada type of some kind. */
1676 #define ADA_TYPE_P(type) \
1677 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1678 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1679 && (type)->is_fixed_instance ()))
1681 #define INIT_FUNC_SPECIFIC(type) \
1682 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1683 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1684 TYPE_ZALLOC (type, \
1685 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1687 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1688 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1689 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1690 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1691 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1692 #define TYPE_CHAIN(thistype) (thistype)->chain
1693 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1694 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1695 so you only have to call check_typedef once. Since allocate_value
1696 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1697 #define TYPE_LENGTH(thistype) (thistype)->length
1699 /* * Return the alignment of the type in target addressable memory
1700 units, or 0 if no alignment was specified. */
1701 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1703 /* * Return the alignment of the type in target addressable memory
1704 units, or 0 if no alignment was specified. */
1705 extern unsigned type_raw_align (struct type
*);
1707 /* * Return the alignment of the type in target addressable memory
1708 units. Return 0 if the alignment cannot be determined; but note
1709 that this makes an effort to compute the alignment even it it was
1710 not specified in the debug info. */
1711 extern unsigned type_align (struct type
*);
1713 /* * Set the alignment of the type. The alignment must be a power of
1714 2. Returns false if the given value does not fit in the available
1715 space in struct type. */
1716 extern bool set_type_align (struct type
*, ULONGEST
);
1718 /* Property accessors for the type data location. */
1719 #define TYPE_DATA_LOCATION(thistype) \
1720 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1721 #define TYPE_DATA_LOCATION_BATON(thistype) \
1722 TYPE_DATA_LOCATION (thistype)->data.baton
1723 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1724 (TYPE_DATA_LOCATION (thistype)->const_val ())
1725 #define TYPE_DATA_LOCATION_KIND(thistype) \
1726 (TYPE_DATA_LOCATION (thistype)->kind ())
1727 #define TYPE_DYNAMIC_LENGTH(thistype) \
1728 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1730 /* Property accessors for the type allocated/associated. */
1731 #define TYPE_ALLOCATED_PROP(thistype) \
1732 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1733 #define TYPE_ASSOCIATED_PROP(thistype) \
1734 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1738 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1739 /* Do not call this, use TYPE_SELF_TYPE. */
1740 extern struct type
*internal_type_self_type (struct type
*);
1741 extern void set_type_self_type (struct type
*, struct type
*);
1743 extern int internal_type_vptr_fieldno (struct type
*);
1744 extern void set_type_vptr_fieldno (struct type
*, int);
1745 extern struct type
*internal_type_vptr_basetype (struct type
*);
1746 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1747 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1748 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1750 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1751 #define TYPE_SPECIFIC_FIELD(thistype) \
1752 TYPE_MAIN_TYPE(thistype)->type_specific_field
1753 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1754 where we're trying to print an Ada array using the C language.
1755 In that case, there is no "cplus_stuff", but the C language assumes
1756 that there is. What we do, in that case, is pretend that there is
1757 an implicit one which is the default cplus stuff. */
1758 #define TYPE_CPLUS_SPECIFIC(thistype) \
1759 (!HAVE_CPLUS_STRUCT(thistype) \
1760 ? (struct cplus_struct_type*)&cplus_struct_default \
1761 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1762 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1763 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1764 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1765 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1766 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1767 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1768 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1769 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1770 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1771 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1772 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1773 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1774 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1775 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1776 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1777 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1779 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1780 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1781 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1783 #define FIELD_NAME(thisfld) ((thisfld).name)
1784 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1785 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1786 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1787 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1788 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1789 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1790 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1791 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1792 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1793 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1794 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1795 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1796 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1797 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1798 #define SET_FIELD_PHYSNAME(thisfld, name) \
1799 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1800 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1801 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1802 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1803 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1804 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1805 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1806 FIELD_DWARF_BLOCK (thisfld) = (addr))
1807 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1808 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1810 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1811 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1812 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1813 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1814 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1815 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1816 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1817 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1818 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1819 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1821 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1822 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1823 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1824 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1825 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1826 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1827 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1828 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1829 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1830 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1831 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1832 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1833 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1834 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1835 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1836 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1837 #define TYPE_FIELD_PRIVATE(thistype, n) \
1838 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1839 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1840 #define TYPE_FIELD_PROTECTED(thistype, n) \
1841 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1842 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1843 #define TYPE_FIELD_IGNORE(thistype, n) \
1844 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1845 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1846 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1847 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1848 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1850 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1851 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1852 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1853 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1854 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1856 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1857 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1858 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1859 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1860 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1861 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1863 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1864 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1865 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1866 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1867 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1868 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1869 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1870 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1871 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1872 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1873 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1874 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1875 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1876 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1877 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1878 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1879 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1881 /* Accessors for typedefs defined by a class. */
1882 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1883 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1884 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1885 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1886 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1887 TYPE_TYPEDEF_FIELD (thistype, n).name
1888 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1889 TYPE_TYPEDEF_FIELD (thistype, n).type
1890 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1891 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1892 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1893 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1894 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1895 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1897 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1898 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1899 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1900 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1901 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1902 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1903 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1904 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1905 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1906 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1907 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1908 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1909 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1910 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1912 #define TYPE_IS_OPAQUE(thistype) \
1913 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1914 || ((thistype)->code () == TYPE_CODE_UNION)) \
1915 && ((thistype)->num_fields () == 0) \
1916 && (!HAVE_CPLUS_STRUCT (thistype) \
1917 || TYPE_NFN_FIELDS (thistype) == 0) \
1918 && ((thistype)->is_stub () || !(thistype)->stub_is_supported ()))
1920 /* * A helper macro that returns the name of a type or "unnamed type"
1921 if the type has no name. */
1923 #define TYPE_SAFE_NAME(type) \
1924 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1926 /* * A helper macro that returns the name of an error type. If the
1927 type has a name, it is used; otherwise, a default is used. */
1929 #define TYPE_ERROR_NAME(type) \
1930 (type->name () ? type->name () : _("<error type>"))
1932 /* Given TYPE, return its floatformat. */
1933 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1937 /* Integral types. */
1939 /* Implicit size/sign (based on the architecture's ABI). */
1940 struct type
*builtin_void
;
1941 struct type
*builtin_char
;
1942 struct type
*builtin_short
;
1943 struct type
*builtin_int
;
1944 struct type
*builtin_long
;
1945 struct type
*builtin_signed_char
;
1946 struct type
*builtin_unsigned_char
;
1947 struct type
*builtin_unsigned_short
;
1948 struct type
*builtin_unsigned_int
;
1949 struct type
*builtin_unsigned_long
;
1950 struct type
*builtin_bfloat16
;
1951 struct type
*builtin_half
;
1952 struct type
*builtin_float
;
1953 struct type
*builtin_double
;
1954 struct type
*builtin_long_double
;
1955 struct type
*builtin_complex
;
1956 struct type
*builtin_double_complex
;
1957 struct type
*builtin_string
;
1958 struct type
*builtin_bool
;
1959 struct type
*builtin_long_long
;
1960 struct type
*builtin_unsigned_long_long
;
1961 struct type
*builtin_decfloat
;
1962 struct type
*builtin_decdouble
;
1963 struct type
*builtin_declong
;
1965 /* "True" character types.
1966 We use these for the '/c' print format, because c_char is just a
1967 one-byte integral type, which languages less laid back than C
1968 will print as ... well, a one-byte integral type. */
1969 struct type
*builtin_true_char
;
1970 struct type
*builtin_true_unsigned_char
;
1972 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1973 is for when an architecture needs to describe a register that has
1975 struct type
*builtin_int0
;
1976 struct type
*builtin_int8
;
1977 struct type
*builtin_uint8
;
1978 struct type
*builtin_int16
;
1979 struct type
*builtin_uint16
;
1980 struct type
*builtin_int24
;
1981 struct type
*builtin_uint24
;
1982 struct type
*builtin_int32
;
1983 struct type
*builtin_uint32
;
1984 struct type
*builtin_int64
;
1985 struct type
*builtin_uint64
;
1986 struct type
*builtin_int128
;
1987 struct type
*builtin_uint128
;
1989 /* Wide character types. */
1990 struct type
*builtin_char16
;
1991 struct type
*builtin_char32
;
1992 struct type
*builtin_wchar
;
1994 /* Pointer types. */
1996 /* * `pointer to data' type. Some target platforms use an implicitly
1997 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1998 struct type
*builtin_data_ptr
;
2000 /* * `pointer to function (returning void)' type. Harvard
2001 architectures mean that ABI function and code pointers are not
2002 interconvertible. Similarly, since ANSI, C standards have
2003 explicitly said that pointers to functions and pointers to data
2004 are not interconvertible --- that is, you can't cast a function
2005 pointer to void * and back, and expect to get the same value.
2006 However, all function pointer types are interconvertible, so void
2007 (*) () can server as a generic function pointer. */
2009 struct type
*builtin_func_ptr
;
2011 /* * `function returning pointer to function (returning void)' type.
2012 The final void return type is not significant for it. */
2014 struct type
*builtin_func_func
;
2016 /* Special-purpose types. */
2018 /* * This type is used to represent a GDB internal function. */
2020 struct type
*internal_fn
;
2022 /* * This type is used to represent an xmethod. */
2023 struct type
*xmethod
;
2026 /* * Return the type table for the specified architecture. */
2028 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
2030 /* * Per-objfile types used by symbol readers. */
2034 /* Basic types based on the objfile architecture. */
2035 struct type
*builtin_void
;
2036 struct type
*builtin_char
;
2037 struct type
*builtin_short
;
2038 struct type
*builtin_int
;
2039 struct type
*builtin_long
;
2040 struct type
*builtin_long_long
;
2041 struct type
*builtin_signed_char
;
2042 struct type
*builtin_unsigned_char
;
2043 struct type
*builtin_unsigned_short
;
2044 struct type
*builtin_unsigned_int
;
2045 struct type
*builtin_unsigned_long
;
2046 struct type
*builtin_unsigned_long_long
;
2047 struct type
*builtin_half
;
2048 struct type
*builtin_float
;
2049 struct type
*builtin_double
;
2050 struct type
*builtin_long_double
;
2052 /* * This type is used to represent symbol addresses. */
2053 struct type
*builtin_core_addr
;
2055 /* * This type represents a type that was unrecognized in symbol
2057 struct type
*builtin_error
;
2059 /* * Types used for symbols with no debug information. */
2060 struct type
*nodebug_text_symbol
;
2061 struct type
*nodebug_text_gnu_ifunc_symbol
;
2062 struct type
*nodebug_got_plt_symbol
;
2063 struct type
*nodebug_data_symbol
;
2064 struct type
*nodebug_unknown_symbol
;
2065 struct type
*nodebug_tls_symbol
;
2068 /* * Return the type table for the specified objfile. */
2070 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
2072 /* Explicit floating-point formats. See "floatformat.h". */
2073 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
2074 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
2075 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2076 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2077 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2078 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2079 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2080 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2081 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2082 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2083 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2084 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2085 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2087 /* Allocate space for storing data associated with a particular
2088 type. We ensure that the space is allocated using the same
2089 mechanism that was used to allocate the space for the type
2090 structure itself. I.e. if the type is on an objfile's
2091 objfile_obstack, then the space for data associated with that type
2092 will also be allocated on the objfile_obstack. If the type is
2093 associated with a gdbarch, then the space for data associated with that
2094 type will also be allocated on the gdbarch_obstack.
2096 If a type is not associated with neither an objfile or a gdbarch then
2097 you should not use this macro to allocate space for data, instead you
2098 should call xmalloc directly, and ensure the memory is correctly freed
2099 when it is no longer needed. */
2101 #define TYPE_ALLOC(t,size) \
2102 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2103 ? &TYPE_OBJFILE (t)->objfile_obstack \
2104 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2108 /* See comment on TYPE_ALLOC. */
2110 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2112 /* Use alloc_type to allocate a type owned by an objfile. Use
2113 alloc_type_arch to allocate a type owned by an architecture. Use
2114 alloc_type_copy to allocate a type with the same owner as a
2115 pre-existing template type, no matter whether objfile or
2117 extern struct type
*alloc_type (struct objfile
*);
2118 extern struct type
*alloc_type_arch (struct gdbarch
*);
2119 extern struct type
*alloc_type_copy (const struct type
*);
2121 /* * Return the type's architecture. For types owned by an
2122 architecture, that architecture is returned. For types owned by an
2123 objfile, that objfile's architecture is returned. */
2125 extern struct gdbarch
*get_type_arch (const struct type
*);
2127 /* * This returns the target type (or NULL) of TYPE, also skipping
2130 extern struct type
*get_target_type (struct type
*type
);
2132 /* Return the equivalent of TYPE_LENGTH, but in number of target
2133 addressable memory units of the associated gdbarch instead of bytes. */
2135 extern unsigned int type_length_units (struct type
*type
);
2137 /* * Helper function to construct objfile-owned types. */
2139 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2141 extern struct type
*init_integer_type (struct objfile
*, int, int,
2143 extern struct type
*init_character_type (struct objfile
*, int, int,
2145 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2147 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2148 const struct floatformat
**,
2149 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2150 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2151 extern struct type
*init_complex_type (const char *, struct type
*);
2152 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2155 /* Helper functions to construct architecture-owned types. */
2156 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2158 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2160 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2162 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2164 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2165 const struct floatformat
**);
2166 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2167 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2170 /* Helper functions to construct a struct or record type. An
2171 initially empty type is created using arch_composite_type().
2172 Fields are then added using append_composite_type_field*(). A union
2173 type has its size set to the largest field. A struct type has each
2174 field packed against the previous. */
2176 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2177 const char *name
, enum type_code code
);
2178 extern void append_composite_type_field (struct type
*t
, const char *name
,
2179 struct type
*field
);
2180 extern void append_composite_type_field_aligned (struct type
*t
,
2184 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2185 struct type
*field
);
2187 /* Helper functions to construct a bit flags type. An initially empty
2188 type is created using arch_flag_type(). Flags are then added using
2189 append_flag_type_field() and append_flag_type_flag(). */
2190 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2191 const char *name
, int bit
);
2192 extern void append_flags_type_field (struct type
*type
,
2193 int start_bitpos
, int nr_bits
,
2194 struct type
*field_type
, const char *name
);
2195 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2198 extern void make_vector_type (struct type
*array_type
);
2199 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2201 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2202 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2203 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2206 extern struct type
*make_reference_type (struct type
*, struct type
**,
2209 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2211 extern struct type
*make_restrict_type (struct type
*);
2213 extern struct type
*make_unqualified_type (struct type
*);
2215 extern struct type
*make_atomic_type (struct type
*);
2217 extern void replace_type (struct type
*, struct type
*);
2219 extern type_instance_flags address_space_name_to_type_instance_flags
2220 (struct gdbarch
*, const char *);
2222 extern const char *address_space_type_instance_flags_to_name
2223 (struct gdbarch
*, type_instance_flags
);
2225 extern struct type
*make_type_with_address_space
2226 (struct type
*type
, type_instance_flags space_identifier
);
2228 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2230 extern struct type
*lookup_methodptr_type (struct type
*);
2232 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2233 struct type
*to_type
, struct field
*args
,
2234 int nargs
, int varargs
);
2236 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2239 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2241 extern struct type
*allocate_stub_method (struct type
*);
2243 extern const char *type_name_or_error (struct type
*type
);
2247 /* The field of the element, or NULL if no element was found. */
2248 struct field
*field
;
2250 /* The bit offset of the element in the parent structure. */
2254 /* Given a type TYPE, lookup the field and offset of the component named
2257 TYPE can be either a struct or union, or a pointer or reference to
2258 a struct or union. If it is a pointer or reference, its target
2259 type is automatically used. Thus '.' and '->' are interchangable,
2260 as specified for the definitions of the expression element types
2261 STRUCTOP_STRUCT and STRUCTOP_PTR.
2263 If NOERR is nonzero, the returned structure will have field set to
2264 NULL if there is no component named NAME.
2266 If the component NAME is a field in an anonymous substructure of
2267 TYPE, the returned offset is a "global" offset relative to TYPE
2268 rather than an offset within the substructure. */
2270 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2272 /* Given a type TYPE, lookup the type of the component named NAME.
2274 TYPE can be either a struct or union, or a pointer or reference to
2275 a struct or union. If it is a pointer or reference, its target
2276 type is automatically used. Thus '.' and '->' are interchangable,
2277 as specified for the definitions of the expression element types
2278 STRUCTOP_STRUCT and STRUCTOP_PTR.
2280 If NOERR is nonzero, return NULL if there is no component named
2283 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2285 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2287 extern struct type
*lookup_pointer_type (struct type
*);
2289 extern struct type
*make_function_type (struct type
*, struct type
**);
2291 extern struct type
*lookup_function_type (struct type
*);
2293 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2297 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2301 extern struct type
*create_array_type_with_stride
2302 (struct type
*, struct type
*, struct type
*,
2303 struct dynamic_prop
*, unsigned int);
2305 extern struct type
*create_range_type (struct type
*, struct type
*,
2306 const struct dynamic_prop
*,
2307 const struct dynamic_prop
*,
2310 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2311 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2314 extern struct type
* create_range_type_with_stride
2315 (struct type
*result_type
, struct type
*index_type
,
2316 const struct dynamic_prop
*low_bound
,
2317 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2318 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2320 extern struct type
*create_array_type (struct type
*, struct type
*,
2323 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2325 extern struct type
*create_string_type (struct type
*, struct type
*,
2327 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2329 extern struct type
*create_set_type (struct type
*, struct type
*);
2331 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2334 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2337 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2339 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2341 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2342 ADDR specifies the location of the variable the type is bound to.
2343 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2344 static properties is returned. */
2345 extern struct type
*resolve_dynamic_type
2346 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2349 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2350 extern int is_dynamic_type (struct type
*type
);
2352 extern struct type
*check_typedef (struct type
*);
2354 extern void check_stub_method_group (struct type
*, int);
2356 extern char *gdb_mangle_name (struct type
*, int, int);
2358 extern struct type
*lookup_typename (const struct language_defn
*,
2359 const char *, const struct block
*, int);
2361 extern struct type
*lookup_template_type (const char *, struct type
*,
2362 const struct block
*);
2364 extern int get_vptr_fieldno (struct type
*, struct type
**);
2366 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2368 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2369 LONGEST
*high_bound
);
2371 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2373 extern int class_types_same_p (const struct type
*, const struct type
*);
2375 extern int is_ancestor (struct type
*, struct type
*);
2377 extern int is_public_ancestor (struct type
*, struct type
*);
2379 extern int is_unique_ancestor (struct type
*, struct value
*);
2381 /* Overload resolution */
2383 /* * Badness if parameter list length doesn't match arg list length. */
2384 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2386 /* * Dummy badness value for nonexistent parameter positions. */
2387 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2388 /* * Badness if no conversion among types. */
2389 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2391 /* * Badness of an exact match. */
2392 extern const struct rank EXACT_MATCH_BADNESS
;
2394 /* * Badness of integral promotion. */
2395 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2396 /* * Badness of floating promotion. */
2397 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2398 /* * Badness of converting a derived class pointer
2399 to a base class pointer. */
2400 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2401 /* * Badness of integral conversion. */
2402 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2403 /* * Badness of floating conversion. */
2404 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2405 /* * Badness of integer<->floating conversions. */
2406 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2407 /* * Badness of conversion of pointer to void pointer. */
2408 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2409 /* * Badness of conversion to boolean. */
2410 extern const struct rank BOOL_CONVERSION_BADNESS
;
2411 /* * Badness of converting derived to base class. */
2412 extern const struct rank BASE_CONVERSION_BADNESS
;
2413 /* * Badness of converting from non-reference to reference. Subrank
2414 is the type of reference conversion being done. */
2415 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2416 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2417 /* * Conversion to rvalue reference. */
2418 #define REFERENCE_CONVERSION_RVALUE 1
2419 /* * Conversion to const lvalue reference. */
2420 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2422 /* * Badness of converting integer 0 to NULL pointer. */
2423 extern const struct rank NULL_POINTER_CONVERSION
;
2424 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2426 extern const struct rank CV_CONVERSION_BADNESS
;
2427 #define CV_CONVERSION_CONST 1
2428 #define CV_CONVERSION_VOLATILE 2
2430 /* Non-standard conversions allowed by the debugger */
2432 /* * Converting a pointer to an int is usually OK. */
2433 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2435 /* * Badness of converting a (non-zero) integer constant
2437 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2439 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2440 extern int compare_ranks (struct rank a
, struct rank b
);
2442 extern int compare_badness (const badness_vector
&,
2443 const badness_vector
&);
2445 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2446 gdb::array_view
<value
*> args
);
2448 extern struct rank
rank_one_type (struct type
*, struct type
*,
2451 extern void recursive_dump_type (struct type
*, int);
2453 extern int field_is_static (struct field
*);
2457 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2458 const struct value_print_options
*,
2459 int, struct ui_file
*);
2461 extern int can_dereference (struct type
*);
2463 extern int is_integral_type (struct type
*);
2465 extern int is_floating_type (struct type
*);
2467 extern int is_scalar_type (struct type
*type
);
2469 extern int is_scalar_type_recursive (struct type
*);
2471 extern int class_or_union_p (const struct type
*);
2473 extern void maintenance_print_type (const char *, int);
2475 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2477 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2479 htab_t copied_types
);
2481 extern struct type
*copy_type (const struct type
*type
);
2483 extern bool types_equal (struct type
*, struct type
*);
2485 extern bool types_deeply_equal (struct type
*, struct type
*);
2487 extern int type_not_allocated (const struct type
*type
);
2489 extern int type_not_associated (const struct type
*type
);
2491 /* * When the type includes explicit byte ordering, return that.
2492 Otherwise, the byte ordering from gdbarch_byte_order for
2493 get_type_arch is returned. */
2495 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2497 /* A flag to enable printing of debugging information of C++
2500 extern unsigned int overload_debug
;
2502 #endif /* GDBTYPES_H */