2 /* Internal type definitions for GDB.
4 Copyright (C) 1992-2021 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/gdb_optional.h"
50 #include "gdbsupport/offset-type.h"
51 #include "gdbsupport/enum-flags.h"
52 #include "gdbsupport/underlying.h"
53 #include "gdbsupport/print-utils.h"
55 #include "gdb_obstack.h"
56 #include "gmp-utils.h"
58 /* Forward declarations for prototypes. */
61 struct value_print_options
;
63 struct dwarf2_per_cu_data
;
64 struct dwarf2_per_objfile
;
66 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
67 are already DWARF-specific. */
69 /* * Offset relative to the start of its containing CU (compilation
71 DEFINE_OFFSET_TYPE (cu_offset
, unsigned int);
73 /* * Offset relative to the start of its .debug_info or .debug_types
75 DEFINE_OFFSET_TYPE (sect_offset
, uint64_t);
78 sect_offset_str (sect_offset offset
)
80 return hex_string (to_underlying (offset
));
83 /* Some macros for char-based bitfields. */
85 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
86 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
87 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
88 #define B_TYPE unsigned char
89 #define B_BYTES(x) ( 1 + ((x)>>3) )
90 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
92 /* * Different kinds of data types are distinguished by the `code'
97 TYPE_CODE_BITSTRING
= -1, /**< Deprecated */
98 TYPE_CODE_UNDEF
= 0, /**< Not used; catches errors */
99 TYPE_CODE_PTR
, /**< Pointer type */
101 /* * Array type with lower & upper bounds.
103 Regardless of the language, GDB represents multidimensional
104 array types the way C does: as arrays of arrays. So an
105 instance of a GDB array type T can always be seen as a series
106 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
109 Row-major languages like C lay out multi-dimensional arrays so
110 that incrementing the rightmost index in a subscripting
111 expression results in the smallest change in the address of the
112 element referred to. Column-major languages like Fortran lay
113 them out so that incrementing the leftmost index results in the
116 This means that, in column-major languages, working our way
117 from type to target type corresponds to working through indices
118 from right to left, not left to right. */
121 TYPE_CODE_STRUCT
, /**< C struct or Pascal record */
122 TYPE_CODE_UNION
, /**< C union or Pascal variant part */
123 TYPE_CODE_ENUM
, /**< Enumeration type */
124 TYPE_CODE_FLAGS
, /**< Bit flags type */
125 TYPE_CODE_FUNC
, /**< Function type */
126 TYPE_CODE_INT
, /**< Integer type */
128 /* * Floating type. This is *NOT* a complex type. */
131 /* * Void type. The length field specifies the length (probably
132 always one) which is used in pointer arithmetic involving
133 pointers to this type, but actually dereferencing such a
134 pointer is invalid; a void type has no length and no actual
135 representation in memory or registers. A pointer to a void
136 type is a generic pointer. */
139 TYPE_CODE_SET
, /**< Pascal sets */
140 TYPE_CODE_RANGE
, /**< Range (integers within spec'd bounds). */
142 /* * A string type which is like an array of character but prints
143 differently. It does not contain a length field as Pascal
144 strings (for many Pascals, anyway) do; if we want to deal with
145 such strings, we should use a new type code. */
148 /* * Unknown type. The length field is valid if we were able to
149 deduce that much about the type, or 0 if we don't even know
154 TYPE_CODE_METHOD
, /**< Method type */
156 /* * Pointer-to-member-function type. This describes how to access a
157 particular member function of a class (possibly a virtual
158 member function). The representation may vary between different
162 /* * Pointer-to-member type. This is the offset within a class to
163 some particular data member. The only currently supported
164 representation uses an unbiased offset, with -1 representing
165 NULL; this is used by the Itanium C++ ABI (used by GCC on all
169 TYPE_CODE_REF
, /**< C++ Reference types */
171 TYPE_CODE_RVALUE_REF
, /**< C++ rvalue reference types */
173 TYPE_CODE_CHAR
, /**< *real* character type */
175 /* * Boolean type. 0 is false, 1 is true, and other values are
176 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
180 TYPE_CODE_COMPLEX
, /**< Complex float */
184 TYPE_CODE_NAMESPACE
, /**< C++ namespace. */
186 TYPE_CODE_DECFLOAT
, /**< Decimal floating point. */
188 TYPE_CODE_MODULE
, /**< Fortran module. */
190 /* * Internal function type. */
191 TYPE_CODE_INTERNAL_FUNCTION
,
193 /* * Methods implemented in extension languages. */
196 /* * Fixed Point type. */
197 TYPE_CODE_FIXED_POINT
,
200 /* * Some bits for the type's instance_flags word. See the macros
201 below for documentation on each bit. */
203 enum type_instance_flag_value
: unsigned
205 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
206 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
207 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
208 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
209 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
210 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5),
211 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
212 TYPE_INSTANCE_FLAG_RESTRICT
= (1 << 7),
213 TYPE_INSTANCE_FLAG_ATOMIC
= (1 << 8)
216 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value
, type_instance_flags
);
218 /* * Not textual. By default, GDB treats all single byte integers as
219 characters (or elements of strings) unless this flag is set. */
221 #define TYPE_NOTTEXT(t) (((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_NOTTEXT)
223 /* * Constant type. If this is set, the corresponding type has a
226 #define TYPE_CONST(t) ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_CONST) != 0)
228 /* * Volatile type. If this is set, the corresponding type has a
229 volatile modifier. */
231 #define TYPE_VOLATILE(t) \
232 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
234 /* * Restrict type. If this is set, the corresponding type has a
235 restrict modifier. */
237 #define TYPE_RESTRICT(t) \
238 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
240 /* * Atomic type. If this is set, the corresponding type has an
243 #define TYPE_ATOMIC(t) \
244 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
246 /* * True if this type represents either an lvalue or lvalue reference type. */
248 #define TYPE_IS_REFERENCE(t) \
249 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
251 /* * True if this type is allocatable. */
252 #define TYPE_IS_ALLOCATABLE(t) \
253 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
255 /* * True if this type has variant parts. */
256 #define TYPE_HAS_VARIANT_PARTS(t) \
257 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
259 /* * True if this type has a dynamic length. */
260 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
261 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
263 /* * Instruction-space delimited type. This is for Harvard architectures
264 which have separate instruction and data address spaces (and perhaps
267 GDB usually defines a flat address space that is a superset of the
268 architecture's two (or more) address spaces, but this is an extension
269 of the architecture's model.
271 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
272 resides in instruction memory, even if its address (in the extended
273 flat address space) does not reflect this.
275 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
276 corresponding type resides in the data memory space, even if
277 this is not indicated by its (flat address space) address.
279 If neither flag is set, the default space for functions / methods
280 is instruction space, and for data objects is data memory. */
282 #define TYPE_CODE_SPACE(t) \
283 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
285 #define TYPE_DATA_SPACE(t) \
286 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
288 /* * Address class flags. Some environments provide for pointers
289 whose size is different from that of a normal pointer or address
290 types where the bits are interpreted differently than normal
291 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
292 target specific ways to represent these different types of address
295 #define TYPE_ADDRESS_CLASS_1(t) (((t)->instance_flags ()) \
296 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
297 #define TYPE_ADDRESS_CLASS_2(t) (((t)->instance_flags ()) \
298 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
299 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
300 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
301 #define TYPE_ADDRESS_CLASS_ALL(t) (((t)->instance_flags ()) \
302 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
304 /* * Information about a single discriminant. */
306 struct discriminant_range
308 /* * The range of values for the variant. This is an inclusive
312 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
313 is true if this should be an unsigned comparison; false for
315 bool contains (ULONGEST value
, bool is_unsigned
) const
318 return value
>= low
&& value
<= high
;
319 LONGEST valuel
= (LONGEST
) value
;
320 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
326 /* * A single variant. A variant has a list of discriminant values.
327 When the discriminator matches one of these, the variant is
328 enabled. Each variant controls zero or more fields; and may also
329 control other variant parts as well. This struct corresponds to
330 DW_TAG_variant in DWARF. */
332 struct variant
: allocate_on_obstack
334 /* * The discriminant ranges for this variant. */
335 gdb::array_view
<discriminant_range
> discriminants
;
337 /* * The fields controlled by this variant. This is inclusive on
338 the low end and exclusive on the high end. A variant may not
339 control any fields, in which case the two values will be equal.
340 These are indexes into the type's array of fields. */
344 /* * Variant parts controlled by this variant. */
345 gdb::array_view
<variant_part
> parts
;
347 /* * Return true if this is the default variant. The default
348 variant can be recognized because it has no associated
350 bool is_default () const
352 return discriminants
.empty ();
355 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
356 if this should be an unsigned comparison; false for signed. */
357 bool matches (ULONGEST value
, bool is_unsigned
) const;
360 /* * A variant part. Each variant part has an optional discriminant
361 and holds an array of variants. This struct corresponds to
362 DW_TAG_variant_part in DWARF. */
364 struct variant_part
: allocate_on_obstack
366 /* * The index of the discriminant field in the outer type. This is
367 an index into the type's array of fields. If this is -1, there
368 is no discriminant, and only the default variant can be
369 considered to be selected. */
370 int discriminant_index
;
372 /* * True if this discriminant is unsigned; false if signed. This
373 comes from the type of the discriminant. */
376 /* * The variants that are controlled by this variant part. Note
377 that these will always be sorted by field number. */
378 gdb::array_view
<variant
> variants
;
382 enum dynamic_prop_kind
384 PROP_UNDEFINED
, /* Not defined. */
385 PROP_CONST
, /* Constant. */
386 PROP_ADDR_OFFSET
, /* Address offset. */
387 PROP_LOCEXPR
, /* Location expression. */
388 PROP_LOCLIST
, /* Location list. */
389 PROP_VARIANT_PARTS
, /* Variant parts. */
390 PROP_TYPE
, /* Type. */
391 PROP_VARIABLE_NAME
, /* Variable name. */
394 union dynamic_prop_data
396 /* Storage for constant property. */
400 /* Storage for dynamic property. */
404 /* Storage of variant parts for a type. A type with variant parts
405 has all its fields "linearized" -- stored in a single field
406 array, just as if they had all been declared that way. The
407 variant parts are attached via a dynamic property, and then are
408 used to control which fields end up in the final type during
409 dynamic type resolution. */
411 const gdb::array_view
<variant_part
> *variant_parts
;
413 /* Once a variant type is resolved, we may want to be able to go
414 from the resolved type to the original type. In this case we
415 rewrite the property's kind and set this field. */
417 struct type
*original_type
;
419 /* Name of a variable to look up; the variable holds the value of
422 const char *variable_name
;
425 /* * Used to store a dynamic property. */
429 dynamic_prop_kind
kind () const
434 void set_undefined ()
436 m_kind
= PROP_UNDEFINED
;
439 LONGEST
const_val () const
441 gdb_assert (m_kind
== PROP_CONST
);
443 return m_data
.const_val
;
446 void set_const_val (LONGEST const_val
)
449 m_data
.const_val
= const_val
;
454 gdb_assert (m_kind
== PROP_LOCEXPR
455 || m_kind
== PROP_LOCLIST
456 || m_kind
== PROP_ADDR_OFFSET
);
461 void set_locexpr (void *baton
)
463 m_kind
= PROP_LOCEXPR
;
464 m_data
.baton
= baton
;
467 void set_loclist (void *baton
)
469 m_kind
= PROP_LOCLIST
;
470 m_data
.baton
= baton
;
473 void set_addr_offset (void *baton
)
475 m_kind
= PROP_ADDR_OFFSET
;
476 m_data
.baton
= baton
;
479 const gdb::array_view
<variant_part
> *variant_parts () const
481 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
483 return m_data
.variant_parts
;
486 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
488 m_kind
= PROP_VARIANT_PARTS
;
489 m_data
.variant_parts
= variant_parts
;
492 struct type
*original_type () const
494 gdb_assert (m_kind
== PROP_TYPE
);
496 return m_data
.original_type
;
499 void set_original_type (struct type
*original_type
)
502 m_data
.original_type
= original_type
;
505 /* Return the name of the variable that holds this property's value.
506 Only valid for PROP_VARIABLE_NAME. */
507 const char *variable_name () const
509 gdb_assert (m_kind
== PROP_VARIABLE_NAME
);
510 return m_data
.variable_name
;
513 /* Set the name of the variable that holds this property's value,
514 and set this property to be of kind PROP_VARIABLE_NAME. */
515 void set_variable_name (const char *name
)
517 m_kind
= PROP_VARIABLE_NAME
;
518 m_data
.variable_name
= name
;
521 /* Determine which field of the union dynamic_prop.data is used. */
522 enum dynamic_prop_kind m_kind
;
524 /* Storage for dynamic or static value. */
525 union dynamic_prop_data m_data
;
528 /* Compare two dynamic_prop objects for equality. dynamic_prop
529 instances are equal iff they have the same type and storage. */
530 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
532 /* Compare two dynamic_prop objects for inequality. */
533 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
538 /* * Define a type's dynamic property node kind. */
539 enum dynamic_prop_node_kind
541 /* A property providing a type's data location.
542 Evaluating this field yields to the location of an object's data. */
543 DYN_PROP_DATA_LOCATION
,
545 /* A property representing DW_AT_allocated. The presence of this attribute
546 indicates that the object of the type can be allocated/deallocated. */
549 /* A property representing DW_AT_associated. The presence of this attribute
550 indicated that the object of the type can be associated. */
553 /* A property providing an array's byte stride. */
554 DYN_PROP_BYTE_STRIDE
,
556 /* A property holding variant parts. */
557 DYN_PROP_VARIANT_PARTS
,
559 /* A property holding the size of the type. */
563 /* * List for dynamic type attributes. */
564 struct dynamic_prop_list
566 /* The kind of dynamic prop in this node. */
567 enum dynamic_prop_node_kind prop_kind
;
569 /* The dynamic property itself. */
570 struct dynamic_prop prop
;
572 /* A pointer to the next dynamic property. */
573 struct dynamic_prop_list
*next
;
576 /* * Determine which field of the union main_type.fields[x].loc is
581 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
582 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
583 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
584 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
585 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
588 /* * A discriminant to determine which field in the
589 main_type.type_specific union is being used, if any.
591 For types such as TYPE_CODE_FLT, the use of this
592 discriminant is really redundant, as we know from the type code
593 which field is going to be used. As such, it would be possible to
594 reduce the size of this enum in order to save a bit or two for
595 other fields of struct main_type. But, since we still have extra
596 room , and for the sake of clarity and consistency, we treat all fields
597 of the union the same way. */
599 enum type_specific_kind
602 TYPE_SPECIFIC_CPLUS_STUFF
,
603 TYPE_SPECIFIC_GNAT_STUFF
,
604 TYPE_SPECIFIC_FLOATFORMAT
,
605 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
607 TYPE_SPECIFIC_SELF_TYPE
,
609 TYPE_SPECIFIC_FIXED_POINT
,
614 struct objfile
*objfile
;
615 struct gdbarch
*gdbarch
;
620 /* * Position of this field, counting in bits from start of
621 containing structure. For big-endian targets, it is the bit
622 offset to the MSB. For little-endian targets, it is the bit
623 offset to the LSB. */
630 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
631 physaddr is the location (in the target) of the static
632 field. Otherwise, physname is the mangled label of the
636 const char *physname
;
638 /* * The field location can be computed by evaluating the
639 following DWARF block. Its DATA is allocated on
640 objfile_obstack - no CU load is needed to access it. */
642 struct dwarf2_locexpr_baton
*dwarf_block
;
647 struct type
*type () const
652 void set_type (struct type
*type
)
657 const char *name () const
662 void set_name (const char *name
)
667 union field_location loc
;
669 /* * For a function or member type, this is 1 if the argument is
670 marked artificial. Artificial arguments should not be shown
671 to the user. For TYPE_CODE_RANGE it is set if the specific
672 bound is not defined. */
674 unsigned int artificial
: 1;
676 /* * Discriminant for union field_location. */
678 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
680 /* * Size of this field, in bits, or zero if not packed.
681 If non-zero in an array type, indicates the element size in
682 bits (used only in Ada at the moment).
683 For an unpacked field, the field's type's length
684 says how many bytes the field occupies. */
686 unsigned int bitsize
: 28;
688 /* * In a struct or union type, type of this field.
689 - In a function or member type, type of this argument.
690 - In an array type, the domain-type of the array. */
694 /* * Name of field, value or argument.
695 NULL for range bounds, array domains, and member function
703 ULONGEST
bit_stride () const
705 if (this->flag_is_byte_stride
)
706 return this->stride
.const_val () * 8;
708 return this->stride
.const_val ();
711 /* * Low bound of range. */
713 struct dynamic_prop low
;
715 /* * High bound of range. */
717 struct dynamic_prop high
;
719 /* The stride value for this range. This can be stored in bits or bytes
720 based on the value of BYTE_STRIDE_P. It is optional to have a stride
721 value, if this range has no stride value defined then this will be set
722 to the constant zero. */
724 struct dynamic_prop stride
;
726 /* * The bias. Sometimes a range value is biased before storage.
727 The bias is added to the stored bits to form the true value. */
731 /* True if HIGH range bound contains the number of elements in the
732 subrange. This affects how the final high bound is computed. */
734 unsigned int flag_upper_bound_is_count
: 1;
736 /* True if LOW or/and HIGH are resolved into a static bound from
739 unsigned int flag_bound_evaluated
: 1;
741 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
743 unsigned int flag_is_byte_stride
: 1;
746 /* Compare two range_bounds objects for equality. Simply does
747 memberwise comparison. */
748 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
750 /* Compare two range_bounds objects for inequality. */
751 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
758 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
759 point to cplus_struct_default, a default static instance of a
760 struct cplus_struct_type. */
762 struct cplus_struct_type
*cplus_stuff
;
764 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
765 provides additional information. */
767 struct gnat_aux_type
*gnat_stuff
;
769 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
770 floatformat object that describes the floating-point value
771 that resides within the type. */
773 const struct floatformat
*floatformat
;
775 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
777 struct func_type
*func_stuff
;
779 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
780 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
783 struct type
*self_type
;
785 /* * For TYPE_CODE_FIXED_POINT types, the info necessary to decode
786 values of that type. */
787 struct fixed_point_type_info
*fixed_point_info
;
789 /* * An integer-like scalar type may be stored in just part of its
790 enclosing storage bytes. This structure describes this
794 /* * The bit size of the integer. This can be 0. For integers
795 that fill their storage (the ordinary case), this field holds
796 the byte size times 8. */
797 unsigned short bit_size
;
798 /* * The bit offset of the integer. This is ordinarily 0, and can
799 only be non-zero if the bit size is less than the storage
801 unsigned short bit_offset
;
805 /* * Main structure representing a type in GDB.
807 This structure is space-critical. Its layout has been tweaked to
808 reduce the space used. */
812 /* * Code for kind of type. */
814 ENUM_BITFIELD(type_code
) code
: 8;
816 /* * Flags about this type. These fields appear at this location
817 because they packs nicely here. See the TYPE_* macros for
818 documentation about these fields. */
820 unsigned int m_flag_unsigned
: 1;
821 unsigned int m_flag_nosign
: 1;
822 unsigned int m_flag_stub
: 1;
823 unsigned int m_flag_target_stub
: 1;
824 unsigned int m_flag_prototyped
: 1;
825 unsigned int m_flag_varargs
: 1;
826 unsigned int m_flag_vector
: 1;
827 unsigned int m_flag_stub_supported
: 1;
828 unsigned int m_flag_gnu_ifunc
: 1;
829 unsigned int m_flag_fixed_instance
: 1;
830 unsigned int m_flag_objfile_owned
: 1;
831 unsigned int m_flag_endianity_not_default
: 1;
833 /* * True if this type was declared with "class" rather than
836 unsigned int m_flag_declared_class
: 1;
838 /* * True if this is an enum type with disjoint values. This
839 affects how the enum is printed. */
841 unsigned int m_flag_flag_enum
: 1;
843 /* * A discriminant telling us which field of the type_specific
844 union is being used for this type, if any. */
846 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
848 /* * Number of fields described for this type. This field appears
849 at this location because it packs nicely here. */
853 /* * Name of this type, or NULL if none.
855 This is used for printing only. For looking up a name, look for
856 a symbol in the VAR_DOMAIN. This is generally allocated in the
857 objfile's obstack. However coffread.c uses malloc. */
861 /* * Every type is now associated with a particular objfile, and the
862 type is allocated on the objfile_obstack for that objfile. One
863 problem however, is that there are times when gdb allocates new
864 types while it is not in the process of reading symbols from a
865 particular objfile. Fortunately, these happen when the type
866 being created is a derived type of an existing type, such as in
867 lookup_pointer_type(). So we can just allocate the new type
868 using the same objfile as the existing type, but to do this we
869 need a backpointer to the objfile from the existing type. Yes
870 this is somewhat ugly, but without major overhaul of the internal
871 type system, it can't be avoided for now. */
873 union type_owner m_owner
;
875 /* * For a pointer type, describes the type of object pointed to.
876 - For an array type, describes the type of the elements.
877 - For a function or method type, describes the type of the return value.
878 - For a range type, describes the type of the full range.
879 - For a complex type, describes the type of each coordinate.
880 - For a special record or union type encoding a dynamic-sized type
881 in GNAT, a memoized pointer to a corresponding static version of
883 - Unused otherwise. */
885 struct type
*target_type
;
887 /* * For structure and union types, a description of each field.
888 For set and pascal array types, there is one "field",
889 whose type is the domain type of the set or array.
890 For range types, there are two "fields",
891 the minimum and maximum values (both inclusive).
892 For enum types, each possible value is described by one "field".
893 For a function or method type, a "field" for each parameter.
894 For C++ classes, there is one field for each base class (if it is
895 a derived class) plus one field for each class data member. Member
896 functions are recorded elsewhere.
898 Using a pointer to a separate array of fields
899 allows all types to have the same size, which is useful
900 because we can allocate the space for a type before
901 we know what to put in it. */
905 struct field
*fields
;
907 /* * Union member used for range types. */
909 struct range_bounds
*bounds
;
911 /* If this is a scalar type, then this is its corresponding
913 struct type
*complex_type
;
917 /* * Slot to point to additional language-specific fields of this
920 union type_specific type_specific
;
922 /* * Contains all dynamic type properties. */
923 struct dynamic_prop_list
*dyn_prop_list
;
926 /* * Number of bits allocated for alignment. */
928 #define TYPE_ALIGN_BITS 8
930 /* * A ``struct type'' describes a particular instance of a type, with
931 some particular qualification. */
935 /* Get the type code of this type.
937 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
938 type, you need to do `check_typedef (type)->code ()`. */
939 type_code
code () const
941 return this->main_type
->code
;
944 /* Set the type code of this type. */
945 void set_code (type_code code
)
947 this->main_type
->code
= code
;
950 /* Get the name of this type. */
951 const char *name () const
953 return this->main_type
->name
;
956 /* Set the name of this type. */
957 void set_name (const char *name
)
959 this->main_type
->name
= name
;
962 /* Get the number of fields of this type. */
963 int num_fields () const
965 return this->main_type
->nfields
;
968 /* Set the number of fields of this type. */
969 void set_num_fields (int num_fields
)
971 this->main_type
->nfields
= num_fields
;
974 /* Get the fields array of this type. */
975 struct field
*fields () const
977 return this->main_type
->flds_bnds
.fields
;
980 /* Get the field at index IDX. */
981 struct field
&field (int idx
) const
983 return this->fields ()[idx
];
986 /* Set the fields array of this type. */
987 void set_fields (struct field
*fields
)
989 this->main_type
->flds_bnds
.fields
= fields
;
992 type
*index_type () const
994 return this->field (0).type ();
997 void set_index_type (type
*index_type
)
999 this->field (0).set_type (index_type
);
1002 /* Return the instance flags converted to the correct type. */
1003 const type_instance_flags
instance_flags () const
1005 return (enum type_instance_flag_value
) this->m_instance_flags
;
1008 /* Set the instance flags. */
1009 void set_instance_flags (type_instance_flags flags
)
1011 this->m_instance_flags
= flags
;
1014 /* Get the bounds bounds of this type. The type must be a range type. */
1015 range_bounds
*bounds () const
1017 switch (this->code ())
1019 case TYPE_CODE_RANGE
:
1020 return this->main_type
->flds_bnds
.bounds
;
1022 case TYPE_CODE_ARRAY
:
1023 case TYPE_CODE_STRING
:
1024 return this->index_type ()->bounds ();
1027 gdb_assert_not_reached
1028 ("type::bounds called on type with invalid code");
1032 /* Set the bounds of this type. The type must be a range type. */
1033 void set_bounds (range_bounds
*bounds
)
1035 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1037 this->main_type
->flds_bnds
.bounds
= bounds
;
1040 ULONGEST
bit_stride () const
1042 if (this->code () == TYPE_CODE_ARRAY
&& this->field (0).bitsize
!= 0)
1043 return this->field (0).bitsize
;
1044 return this->bounds ()->bit_stride ();
1047 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1048 the type is signed (unless TYPE_NOSIGN is set). */
1050 bool is_unsigned () const
1052 return this->main_type
->m_flag_unsigned
;
1055 void set_is_unsigned (bool is_unsigned
)
1057 this->main_type
->m_flag_unsigned
= is_unsigned
;
1060 /* No sign for this type. In C++, "char", "signed char", and
1061 "unsigned char" are distinct types; so we need an extra flag to
1062 indicate the absence of a sign! */
1064 bool has_no_signedness () const
1066 return this->main_type
->m_flag_nosign
;
1069 void set_has_no_signedness (bool has_no_signedness
)
1071 this->main_type
->m_flag_nosign
= has_no_signedness
;
1074 /* This appears in a type's flags word if it is a stub type (e.g.,
1075 if someone referenced a type that wasn't defined in a source file
1076 via (struct sir_not_appearing_in_this_film *)). */
1078 bool is_stub () const
1080 return this->main_type
->m_flag_stub
;
1083 void set_is_stub (bool is_stub
)
1085 this->main_type
->m_flag_stub
= is_stub
;
1088 /* The target type of this type is a stub type, and this type needs
1089 to be updated if it gets un-stubbed in check_typedef. Used for
1090 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
1091 based on the TYPE_LENGTH of the target type. Also, set for
1092 TYPE_CODE_TYPEDEF. */
1094 bool target_is_stub () const
1096 return this->main_type
->m_flag_target_stub
;
1099 void set_target_is_stub (bool target_is_stub
)
1101 this->main_type
->m_flag_target_stub
= target_is_stub
;
1104 /* This is a function type which appears to have a prototype. We
1105 need this for function calls in order to tell us if it's necessary
1106 to coerce the args, or to just do the standard conversions. This
1107 is used with a short field. */
1109 bool is_prototyped () const
1111 return this->main_type
->m_flag_prototyped
;
1114 void set_is_prototyped (bool is_prototyped
)
1116 this->main_type
->m_flag_prototyped
= is_prototyped
;
1119 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
1122 bool has_varargs () const
1124 return this->main_type
->m_flag_varargs
;
1127 void set_has_varargs (bool has_varargs
)
1129 this->main_type
->m_flag_varargs
= has_varargs
;
1132 /* Identify a vector type. Gcc is handling this by adding an extra
1133 attribute to the array type. We slurp that in as a new flag of a
1134 type. This is used only in dwarf2read.c. */
1136 bool is_vector () const
1138 return this->main_type
->m_flag_vector
;
1141 void set_is_vector (bool is_vector
)
1143 this->main_type
->m_flag_vector
= is_vector
;
1146 /* This debug target supports TYPE_STUB(t). In the unsupported case
1147 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
1148 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
1149 guessed the TYPE_STUB(t) value (see dwarfread.c). */
1151 bool stub_is_supported () const
1153 return this->main_type
->m_flag_stub_supported
;
1156 void set_stub_is_supported (bool stub_is_supported
)
1158 this->main_type
->m_flag_stub_supported
= stub_is_supported
;
1161 /* Used only for TYPE_CODE_FUNC where it specifies the real function
1162 address is returned by this function call. TYPE_TARGET_TYPE
1163 determines the final returned function type to be presented to
1166 bool is_gnu_ifunc () const
1168 return this->main_type
->m_flag_gnu_ifunc
;
1171 void set_is_gnu_ifunc (bool is_gnu_ifunc
)
1173 this->main_type
->m_flag_gnu_ifunc
= is_gnu_ifunc
;
1176 /* The debugging formats (especially STABS) do not contain enough
1177 information to represent all Ada types---especially those whose
1178 size depends on dynamic quantities. Therefore, the GNAT Ada
1179 compiler includes extra information in the form of additional type
1180 definitions connected by naming conventions. This flag indicates
1181 that the type is an ordinary (unencoded) GDB type that has been
1182 created from the necessary run-time information, and does not need
1183 further interpretation. Optionally marks ordinary, fixed-size GDB
1186 bool is_fixed_instance () const
1188 return this->main_type
->m_flag_fixed_instance
;
1191 void set_is_fixed_instance (bool is_fixed_instance
)
1193 this->main_type
->m_flag_fixed_instance
= is_fixed_instance
;
1196 /* A compiler may supply dwarf instrumentation that indicates the desired
1197 endian interpretation of the variable differs from the native endian
1200 bool endianity_is_not_default () const
1202 return this->main_type
->m_flag_endianity_not_default
;
1205 void set_endianity_is_not_default (bool endianity_is_not_default
)
1207 this->main_type
->m_flag_endianity_not_default
= endianity_is_not_default
;
1211 /* True if this type was declared using the "class" keyword. This is
1212 only valid for C++ structure and enum types. If false, a structure
1213 was declared as a "struct"; if true it was declared "class". For
1214 enum types, this is true when "enum class" or "enum struct" was
1215 used to declare the type. */
1217 bool is_declared_class () const
1219 return this->main_type
->m_flag_declared_class
;
1222 void set_is_declared_class (bool is_declared_class
) const
1224 this->main_type
->m_flag_declared_class
= is_declared_class
;
1227 /* True if this type is a "flag" enum. A flag enum is one where all
1228 the values are pairwise disjoint when "and"ed together. This
1229 affects how enum values are printed. */
1231 bool is_flag_enum () const
1233 return this->main_type
->m_flag_flag_enum
;
1236 void set_is_flag_enum (bool is_flag_enum
)
1238 this->main_type
->m_flag_flag_enum
= is_flag_enum
;
1241 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return a reference
1242 to this type's fixed_point_info. */
1244 struct fixed_point_type_info
&fixed_point_info () const
1246 gdb_assert (this->code () == TYPE_CODE_FIXED_POINT
);
1247 gdb_assert (this->main_type
->type_specific
.fixed_point_info
!= nullptr);
1249 return *this->main_type
->type_specific
.fixed_point_info
;
1252 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, set this type's
1253 fixed_point_info to INFO. */
1255 void set_fixed_point_info (struct fixed_point_type_info
*info
) const
1257 gdb_assert (this->code () == TYPE_CODE_FIXED_POINT
);
1259 this->main_type
->type_specific
.fixed_point_info
= info
;
1262 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return its base type.
1264 In other words, this returns the type after having peeled all
1265 intermediate type layers (such as TYPE_CODE_RANGE, for instance).
1266 The TYPE_CODE of the type returned is guaranteed to be
1267 a TYPE_CODE_FIXED_POINT. */
1269 struct type
*fixed_point_type_base_type ();
1271 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return its scaling
1274 const gdb_mpq
&fixed_point_scaling_factor ();
1276 /* * Return the dynamic property of the requested KIND from this type's
1277 list of dynamic properties. */
1278 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1280 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1281 property to this type.
1283 This function assumes that this type is objfile-owned. */
1284 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1286 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1287 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1289 /* Return true if this type is owned by an objfile. Return false if it is
1290 owned by an architecture. */
1291 bool is_objfile_owned () const
1293 return this->main_type
->m_flag_objfile_owned
;
1296 /* Set the owner of the type to be OBJFILE. */
1297 void set_owner (objfile
*objfile
)
1299 gdb_assert (objfile
!= nullptr);
1301 this->main_type
->m_owner
.objfile
= objfile
;
1302 this->main_type
->m_flag_objfile_owned
= true;
1305 /* Set the owner of the type to be ARCH. */
1306 void set_owner (gdbarch
*arch
)
1308 gdb_assert (arch
!= nullptr);
1310 this->main_type
->m_owner
.gdbarch
= arch
;
1311 this->main_type
->m_flag_objfile_owned
= false;
1314 /* Return the objfile owner of this type.
1316 Return nullptr if this type is not objfile-owned. */
1317 struct objfile
*objfile_owner () const
1319 if (!this->is_objfile_owned ())
1322 return this->main_type
->m_owner
.objfile
;
1325 /* Return the gdbarch owner of this type.
1327 Return nullptr if this type is not gdbarch-owned. */
1328 gdbarch
*arch_owner () const
1330 if (this->is_objfile_owned ())
1333 return this->main_type
->m_owner
.gdbarch
;
1336 /* Return the type's architecture. For types owned by an
1337 architecture, that architecture is returned. For types owned by an
1338 objfile, that objfile's architecture is returned.
1340 The return value is always non-nullptr. */
1341 gdbarch
*arch () const;
1343 /* * Return true if this is an integer type whose logical (bit) size
1344 differs from its storage size; false otherwise. Always return
1345 false for non-integer (i.e., non-TYPE_SPECIFIC_INT) types. */
1346 bool bit_size_differs_p () const
1348 return (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
1349 && main_type
->type_specific
.int_stuff
.bit_size
!= 8 * length
);
1352 /* * Return the logical (bit) size for this integer type. Only
1353 valid for integer (TYPE_SPECIFIC_INT) types. */
1354 unsigned short bit_size () const
1356 gdb_assert (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
);
1357 return main_type
->type_specific
.int_stuff
.bit_size
;
1360 /* * Return the bit offset for this integer type. Only valid for
1361 integer (TYPE_SPECIFIC_INT) types. */
1362 unsigned short bit_offset () const
1364 gdb_assert (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
);
1365 return main_type
->type_specific
.int_stuff
.bit_offset
;
1368 /* Return true if this is a pointer or reference type. */
1369 bool is_pointer_or_reference () const
1371 return this->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (this);
1374 /* * Type that is a pointer to this type.
1375 NULL if no such pointer-to type is known yet.
1376 The debugger may add the address of such a type
1377 if it has to construct one later. */
1379 struct type
*pointer_type
;
1381 /* * C++: also need a reference type. */
1383 struct type
*reference_type
;
1385 /* * A C++ rvalue reference type added in C++11. */
1387 struct type
*rvalue_reference_type
;
1389 /* * Variant chain. This points to a type that differs from this
1390 one only in qualifiers and length. Currently, the possible
1391 qualifiers are const, volatile, code-space, data-space, and
1392 address class. The length may differ only when one of the
1393 address class flags are set. The variants are linked in a
1394 circular ring and share MAIN_TYPE. */
1398 /* * The alignment for this type. Zero means that the alignment was
1399 not specified in the debug info. Note that this is stored in a
1400 funny way: as the log base 2 (plus 1) of the alignment; so a
1401 value of 1 means the alignment is 1, and a value of 9 means the
1402 alignment is 256. */
1404 unsigned align_log2
: TYPE_ALIGN_BITS
;
1406 /* * Flags specific to this instance of the type, indicating where
1409 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1410 binary or-ed with the target type, with a special case for
1411 address class and space class. For example if this typedef does
1412 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1413 instance flags are completely inherited from the target type. No
1414 qualifiers can be cleared by the typedef. See also
1416 unsigned m_instance_flags
: 9;
1418 /* * Length of storage for a value of this type. The value is the
1419 expression in host bytes of what sizeof(type) would return. This
1420 size includes padding. For example, an i386 extended-precision
1421 floating point value really only occupies ten bytes, but most
1422 ABI's declare its size to be 12 bytes, to preserve alignment.
1423 A `struct type' representing such a floating-point type would
1424 have a `length' value of 12, even though the last two bytes are
1427 Since this field is expressed in host bytes, its value is appropriate
1428 to pass to memcpy and such (it is assumed that GDB itself always runs
1429 on an 8-bits addressable architecture). However, when using it for
1430 target address arithmetic (e.g. adding it to a target address), the
1431 type_length_units function should be used in order to get the length
1432 expressed in target addressable memory units. */
1436 /* * Core type, shared by a group of qualified types. */
1438 struct main_type
*main_type
;
1444 /* * The overloaded name.
1445 This is generally allocated in the objfile's obstack.
1446 However stabsread.c sometimes uses malloc. */
1450 /* * The number of methods with this name. */
1454 /* * The list of methods. */
1456 struct fn_field
*fn_fields
;
1463 /* * If is_stub is clear, this is the mangled name which we can look
1464 up to find the address of the method (FIXME: it would be cleaner
1465 to have a pointer to the struct symbol here instead).
1467 If is_stub is set, this is the portion of the mangled name which
1468 specifies the arguments. For example, "ii", if there are two int
1469 arguments, or "" if there are no arguments. See gdb_mangle_name
1470 for the conversion from this format to the one used if is_stub is
1473 const char *physname
;
1475 /* * The function type for the method.
1477 (This comment used to say "The return value of the method", but
1478 that's wrong. The function type is expected here, i.e. something
1479 with TYPE_CODE_METHOD, and *not* the return-value type). */
1483 /* * For virtual functions. First baseclass that defines this
1484 virtual function. */
1486 struct type
*fcontext
;
1490 unsigned int is_const
:1;
1491 unsigned int is_volatile
:1;
1492 unsigned int is_private
:1;
1493 unsigned int is_protected
:1;
1494 unsigned int is_artificial
:1;
1496 /* * A stub method only has some fields valid (but they are enough
1497 to reconstruct the rest of the fields). */
1499 unsigned int is_stub
:1;
1501 /* * True if this function is a constructor, false otherwise. */
1503 unsigned int is_constructor
: 1;
1505 /* * True if this function is deleted, false otherwise. */
1507 unsigned int is_deleted
: 1;
1509 /* * DW_AT_defaulted attribute for this function. The value is one
1510 of the DW_DEFAULTED constants. */
1512 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1516 unsigned int dummy
:6;
1518 /* * Index into that baseclass's virtual function table, minus 2;
1519 else if static: VOFFSET_STATIC; else: 0. */
1521 unsigned int voffset
:16;
1523 #define VOFFSET_STATIC 1
1529 /* * Unqualified name to be prefixed by owning class qualified
1534 /* * Type this typedef named NAME represents. */
1538 /* * True if this field was declared protected, false otherwise. */
1539 unsigned int is_protected
: 1;
1541 /* * True if this field was declared private, false otherwise. */
1542 unsigned int is_private
: 1;
1545 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1546 TYPE_CODE_UNION nodes. */
1548 struct cplus_struct_type
1550 /* * Number of base classes this type derives from. The
1551 baseclasses are stored in the first N_BASECLASSES fields
1552 (i.e. the `fields' field of the struct type). The only fields
1553 of struct field that are used are: type, name, loc.bitpos. */
1555 short n_baseclasses
;
1557 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1558 All access to this field must be through TYPE_VPTR_FIELDNO as one
1559 thing it does is check whether the field has been initialized.
1560 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1561 which for portability reasons doesn't initialize this field.
1562 TYPE_VPTR_FIELDNO returns -1 for this case.
1564 If -1, we were unable to find the virtual function table pointer in
1565 initial symbol reading, and get_vptr_fieldno should be called to find
1566 it if possible. get_vptr_fieldno will update this field if possible.
1567 Otherwise the value is left at -1.
1569 Unused if this type does not have virtual functions. */
1573 /* * Number of methods with unique names. All overloaded methods
1574 with the same name count only once. */
1578 /* * Number of template arguments. */
1580 unsigned short n_template_arguments
;
1582 /* * One if this struct is a dynamic class, as defined by the
1583 Itanium C++ ABI: if it requires a virtual table pointer,
1584 because it or any of its base classes have one or more virtual
1585 member functions or virtual base classes. Minus one if not
1586 dynamic. Zero if not yet computed. */
1590 /* * The calling convention for this type, fetched from the
1591 DW_AT_calling_convention attribute. The value is one of the
1594 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1596 /* * The base class which defined the virtual function table pointer. */
1598 struct type
*vptr_basetype
;
1600 /* * For derived classes, the number of base classes is given by
1601 n_baseclasses and virtual_field_bits is a bit vector containing
1602 one bit per base class. If the base class is virtual, the
1603 corresponding bit will be set.
1608 class C : public B, public virtual A {};
1610 B is a baseclass of C; A is a virtual baseclass for C.
1611 This is a C++ 2.0 language feature. */
1613 B_TYPE
*virtual_field_bits
;
1615 /* * For classes with private fields, the number of fields is
1616 given by nfields and private_field_bits is a bit vector
1617 containing one bit per field.
1619 If the field is private, the corresponding bit will be set. */
1621 B_TYPE
*private_field_bits
;
1623 /* * For classes with protected fields, the number of fields is
1624 given by nfields and protected_field_bits is a bit vector
1625 containing one bit per field.
1627 If the field is private, the corresponding bit will be set. */
1629 B_TYPE
*protected_field_bits
;
1631 /* * For classes with fields to be ignored, either this is
1632 optimized out or this field has length 0. */
1634 B_TYPE
*ignore_field_bits
;
1636 /* * For classes, structures, and unions, a description of each
1637 field, which consists of an overloaded name, followed by the
1638 types of arguments that the method expects, and then the name
1639 after it has been renamed to make it distinct.
1641 fn_fieldlists points to an array of nfn_fields of these. */
1643 struct fn_fieldlist
*fn_fieldlists
;
1645 /* * typedefs defined inside this class. typedef_field points to
1646 an array of typedef_field_count elements. */
1648 struct decl_field
*typedef_field
;
1650 unsigned typedef_field_count
;
1652 /* * The nested types defined by this type. nested_types points to
1653 an array of nested_types_count elements. */
1655 struct decl_field
*nested_types
;
1657 unsigned nested_types_count
;
1659 /* * The template arguments. This is an array with
1660 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1663 struct symbol
**template_arguments
;
1666 /* * Struct used to store conversion rankings. */
1672 /* * When two conversions are of the same type and therefore have
1673 the same rank, subrank is used to differentiate the two.
1675 Eg: Two derived-class-pointer to base-class-pointer conversions
1676 would both have base pointer conversion rank, but the
1677 conversion with the shorter distance to the ancestor is
1678 preferable. 'subrank' would be used to reflect that. */
1683 /* * Used for ranking a function for overload resolution. */
1685 typedef std::vector
<rank
> badness_vector
;
1687 /* * GNAT Ada-specific information for various Ada types. */
1689 struct gnat_aux_type
1691 /* * Parallel type used to encode information about dynamic types
1692 used in Ada (such as variant records, variable-size array,
1694 struct type
* descriptive_type
;
1697 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1701 /* * The calling convention for targets supporting multiple ABIs.
1702 Right now this is only fetched from the Dwarf-2
1703 DW_AT_calling_convention attribute. The value is one of the
1706 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1708 /* * Whether this function normally returns to its caller. It is
1709 set from the DW_AT_noreturn attribute if set on the
1710 DW_TAG_subprogram. */
1712 unsigned int is_noreturn
: 1;
1714 /* * Only those DW_TAG_call_site's in this function that have
1715 DW_AT_call_tail_call set are linked in this list. Function
1716 without its tail call list complete
1717 (DW_AT_call_all_tail_calls or its superset
1718 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1719 DW_TAG_call_site's exist in such function. */
1721 struct call_site
*tail_call_list
;
1723 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1724 contains the method. */
1726 struct type
*self_type
;
1729 /* struct call_site_parameter can be referenced in callees by several ways. */
1731 enum call_site_parameter_kind
1733 /* * Use field call_site_parameter.u.dwarf_reg. */
1734 CALL_SITE_PARAMETER_DWARF_REG
,
1736 /* * Use field call_site_parameter.u.fb_offset. */
1737 CALL_SITE_PARAMETER_FB_OFFSET
,
1739 /* * Use field call_site_parameter.u.param_offset. */
1740 CALL_SITE_PARAMETER_PARAM_OFFSET
1743 struct call_site_target
1745 union field_location loc
;
1747 /* * Discriminant for union field_location. */
1749 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1752 union call_site_parameter_u
1754 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1755 as DWARF register number, for register passed
1760 /* * Offset from the callee's frame base, for stack passed
1761 parameters. This equals offset from the caller's stack
1764 CORE_ADDR fb_offset
;
1766 /* * Offset relative to the start of this PER_CU to
1767 DW_TAG_formal_parameter which is referenced by both
1768 caller and the callee. */
1770 cu_offset param_cu_off
;
1773 struct call_site_parameter
1775 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1777 union call_site_parameter_u u
;
1779 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1781 const gdb_byte
*value
;
1784 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1785 It may be NULL if not provided by DWARF. */
1787 const gdb_byte
*data_value
;
1788 size_t data_value_size
;
1791 /* * A place where a function gets called from, represented by
1792 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1796 call_site (CORE_ADDR pc
, dwarf2_per_cu_data
*per_cu
,
1797 dwarf2_per_objfile
*per_objfile
)
1798 : per_cu (per_cu
), per_objfile (per_objfile
), m_unrelocated_pc (pc
)
1802 eq (const call_site
*a
, const call_site
*b
)
1804 return core_addr_eq (&a
->m_unrelocated_pc
, &b
->m_unrelocated_pc
);
1808 hash (const call_site
*a
)
1810 return core_addr_hash (&a
->m_unrelocated_pc
);
1814 eq (const void *a
, const void *b
)
1816 return eq ((const call_site
*)a
, (const call_site
*)b
);
1820 hash (const void *a
)
1822 return hash ((const call_site
*)a
);
1825 /* Return the address of the first instruction after this call. */
1827 CORE_ADDR
pc () const;
1829 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1831 struct call_site
*tail_call_next
= nullptr;
1833 /* * Describe DW_AT_call_target. Missing attribute uses
1834 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1836 struct call_site_target target
{};
1838 /* * Size of the PARAMETER array. */
1840 unsigned parameter_count
= 0;
1842 /* * CU of the function where the call is located. It gets used
1843 for DWARF blocks execution in the parameter array below. */
1845 dwarf2_per_cu_data
*const per_cu
= nullptr;
1847 /* objfile of the function where the call is located. */
1849 dwarf2_per_objfile
*const per_objfile
= nullptr;
1852 /* Unrelocated address of the first instruction after this call. */
1853 const CORE_ADDR m_unrelocated_pc
;
1856 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1858 struct call_site_parameter parameter
[];
1861 /* The type-specific info for TYPE_CODE_FIXED_POINT types. */
1863 struct fixed_point_type_info
1865 /* The fixed point type's scaling factor. */
1866 gdb_mpq scaling_factor
;
1869 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1870 static structure. */
1872 extern const struct cplus_struct_type cplus_struct_default
;
1874 extern void allocate_cplus_struct_type (struct type
*);
1876 #define INIT_CPLUS_SPECIFIC(type) \
1877 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1878 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1879 &cplus_struct_default)
1881 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1883 #define HAVE_CPLUS_STRUCT(type) \
1884 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1885 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1887 #define INIT_NONE_SPECIFIC(type) \
1888 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1889 TYPE_MAIN_TYPE (type)->type_specific = {})
1891 extern const struct gnat_aux_type gnat_aux_default
;
1893 extern void allocate_gnat_aux_type (struct type
*);
1895 #define INIT_GNAT_SPECIFIC(type) \
1896 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1897 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1898 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1899 /* * A macro that returns non-zero if the type-specific data should be
1900 read as "gnat-stuff". */
1901 #define HAVE_GNAT_AUX_INFO(type) \
1902 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1904 /* * True if TYPE is known to be an Ada type of some kind. */
1905 #define ADA_TYPE_P(type) \
1906 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1907 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1908 && (type)->is_fixed_instance ()))
1910 #define INIT_FUNC_SPECIFIC(type) \
1911 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1912 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1913 TYPE_ZALLOC (type, \
1914 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1916 /* "struct fixed_point_type_info" has a field that has a destructor.
1917 See allocate_fixed_point_type_info to understand how this is
1919 #define INIT_FIXED_POINT_SPECIFIC(type) \
1920 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FIXED_POINT, \
1921 allocate_fixed_point_type_info (type))
1923 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1924 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1925 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1926 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1927 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1928 #define TYPE_CHAIN(thistype) (thistype)->chain
1929 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1930 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1931 so you only have to call check_typedef once. Since allocate_value
1932 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1933 #define TYPE_LENGTH(thistype) (thistype)->length
1935 /* * Return the alignment of the type in target addressable memory
1936 units, or 0 if no alignment was specified. */
1937 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1939 /* * Return the alignment of the type in target addressable memory
1940 units, or 0 if no alignment was specified. */
1941 extern unsigned type_raw_align (struct type
*);
1943 /* * Return the alignment of the type in target addressable memory
1944 units. Return 0 if the alignment cannot be determined; but note
1945 that this makes an effort to compute the alignment even it it was
1946 not specified in the debug info. */
1947 extern unsigned type_align (struct type
*);
1949 /* * Set the alignment of the type. The alignment must be a power of
1950 2. Returns false if the given value does not fit in the available
1951 space in struct type. */
1952 extern bool set_type_align (struct type
*, ULONGEST
);
1954 /* Property accessors for the type data location. */
1955 #define TYPE_DATA_LOCATION(thistype) \
1956 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1957 #define TYPE_DATA_LOCATION_BATON(thistype) \
1958 TYPE_DATA_LOCATION (thistype)->data.baton
1959 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1960 (TYPE_DATA_LOCATION (thistype)->const_val ())
1961 #define TYPE_DATA_LOCATION_KIND(thistype) \
1962 (TYPE_DATA_LOCATION (thistype)->kind ())
1963 #define TYPE_DYNAMIC_LENGTH(thistype) \
1964 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1966 /* Property accessors for the type allocated/associated. */
1967 #define TYPE_ALLOCATED_PROP(thistype) \
1968 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1969 #define TYPE_ASSOCIATED_PROP(thistype) \
1970 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1974 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1975 /* Do not call this, use TYPE_SELF_TYPE. */
1976 extern struct type
*internal_type_self_type (struct type
*);
1977 extern void set_type_self_type (struct type
*, struct type
*);
1979 extern int internal_type_vptr_fieldno (struct type
*);
1980 extern void set_type_vptr_fieldno (struct type
*, int);
1981 extern struct type
*internal_type_vptr_basetype (struct type
*);
1982 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1983 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1984 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1986 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1987 #define TYPE_SPECIFIC_FIELD(thistype) \
1988 TYPE_MAIN_TYPE(thistype)->type_specific_field
1989 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1990 where we're trying to print an Ada array using the C language.
1991 In that case, there is no "cplus_stuff", but the C language assumes
1992 that there is. What we do, in that case, is pretend that there is
1993 an implicit one which is the default cplus stuff. */
1994 #define TYPE_CPLUS_SPECIFIC(thistype) \
1995 (!HAVE_CPLUS_STRUCT(thistype) \
1996 ? (struct cplus_struct_type*)&cplus_struct_default \
1997 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1998 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1999 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
2000 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
2001 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
2002 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
2003 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
2004 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
2005 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
2006 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
2007 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
2008 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
2009 #define TYPE_BASECLASS_NAME(thistype,index) (thistype->field (index).name ())
2010 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
2011 #define BASETYPE_VIA_PUBLIC(thistype, index) \
2012 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
2013 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
2015 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
2016 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
2017 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
2019 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
2020 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
2021 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
2022 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
2023 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
2024 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
2025 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
2026 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
2027 #define SET_FIELD_BITPOS(thisfld, bitpos) \
2028 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
2029 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
2030 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
2031 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
2032 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
2033 #define SET_FIELD_PHYSNAME(thisfld, name) \
2034 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
2035 FIELD_STATIC_PHYSNAME (thisfld) = (name))
2036 #define SET_FIELD_PHYSADDR(thisfld, addr) \
2037 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
2038 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
2039 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
2040 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
2041 FIELD_DWARF_BLOCK (thisfld) = (addr))
2042 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
2043 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
2045 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
2046 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
2047 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
2048 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
2049 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
2050 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
2051 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
2052 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
2053 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
2055 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
2056 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
2057 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
2058 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
2059 #define TYPE_FIELD_IGNORE_BITS(thistype) \
2060 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
2061 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
2062 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
2063 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
2064 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
2065 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
2066 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
2067 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
2068 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
2069 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
2070 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
2071 #define TYPE_FIELD_PRIVATE(thistype, n) \
2072 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
2073 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
2074 #define TYPE_FIELD_PROTECTED(thistype, n) \
2075 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
2076 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
2077 #define TYPE_FIELD_IGNORE(thistype, n) \
2078 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
2079 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
2080 #define TYPE_FIELD_VIRTUAL(thistype, n) \
2081 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
2082 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
2084 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
2085 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
2086 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
2087 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
2088 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
2090 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
2091 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
2092 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
2093 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
2094 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
2095 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
2097 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
2098 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
2099 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
2100 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
2101 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
2102 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
2103 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
2104 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
2105 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
2106 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
2107 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
2108 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
2109 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
2110 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
2111 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
2112 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
2113 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
2115 /* Accessors for typedefs defined by a class. */
2116 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
2117 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
2118 #define TYPE_TYPEDEF_FIELD(thistype, n) \
2119 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
2120 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
2121 TYPE_TYPEDEF_FIELD (thistype, n).name
2122 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
2123 TYPE_TYPEDEF_FIELD (thistype, n).type
2124 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
2125 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
2126 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
2127 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
2128 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
2129 TYPE_TYPEDEF_FIELD (thistype, n).is_private
2131 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
2132 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
2133 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
2134 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
2135 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
2136 TYPE_NESTED_TYPES_FIELD (thistype, n).name
2137 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
2138 TYPE_NESTED_TYPES_FIELD (thistype, n).type
2139 #define TYPE_NESTED_TYPES_COUNT(thistype) \
2140 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
2141 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
2142 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
2143 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
2144 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
2146 #define TYPE_IS_OPAQUE(thistype) \
2147 ((((thistype)->code () == TYPE_CODE_STRUCT) \
2148 || ((thistype)->code () == TYPE_CODE_UNION)) \
2149 && ((thistype)->num_fields () == 0) \
2150 && (!HAVE_CPLUS_STRUCT (thistype) \
2151 || TYPE_NFN_FIELDS (thistype) == 0) \
2152 && ((thistype)->is_stub () || !(thistype)->stub_is_supported ()))
2154 /* * A helper macro that returns the name of a type or "unnamed type"
2155 if the type has no name. */
2157 #define TYPE_SAFE_NAME(type) \
2158 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
2160 /* * A helper macro that returns the name of an error type. If the
2161 type has a name, it is used; otherwise, a default is used. */
2163 #define TYPE_ERROR_NAME(type) \
2164 (type->name () ? type->name () : _("<error type>"))
2166 /* Given TYPE, return its floatformat. */
2167 const struct floatformat
*floatformat_from_type (const struct type
*type
);
2171 /* Integral types. */
2173 /* Implicit size/sign (based on the architecture's ABI). */
2174 struct type
*builtin_void
;
2175 struct type
*builtin_char
;
2176 struct type
*builtin_short
;
2177 struct type
*builtin_int
;
2178 struct type
*builtin_long
;
2179 struct type
*builtin_signed_char
;
2180 struct type
*builtin_unsigned_char
;
2181 struct type
*builtin_unsigned_short
;
2182 struct type
*builtin_unsigned_int
;
2183 struct type
*builtin_unsigned_long
;
2184 struct type
*builtin_bfloat16
;
2185 struct type
*builtin_half
;
2186 struct type
*builtin_float
;
2187 struct type
*builtin_double
;
2188 struct type
*builtin_long_double
;
2189 struct type
*builtin_complex
;
2190 struct type
*builtin_double_complex
;
2191 struct type
*builtin_string
;
2192 struct type
*builtin_bool
;
2193 struct type
*builtin_long_long
;
2194 struct type
*builtin_unsigned_long_long
;
2195 struct type
*builtin_decfloat
;
2196 struct type
*builtin_decdouble
;
2197 struct type
*builtin_declong
;
2199 /* "True" character types.
2200 We use these for the '/c' print format, because c_char is just a
2201 one-byte integral type, which languages less laid back than C
2202 will print as ... well, a one-byte integral type. */
2203 struct type
*builtin_true_char
;
2204 struct type
*builtin_true_unsigned_char
;
2206 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
2207 is for when an architecture needs to describe a register that has
2209 struct type
*builtin_int0
;
2210 struct type
*builtin_int8
;
2211 struct type
*builtin_uint8
;
2212 struct type
*builtin_int16
;
2213 struct type
*builtin_uint16
;
2214 struct type
*builtin_int24
;
2215 struct type
*builtin_uint24
;
2216 struct type
*builtin_int32
;
2217 struct type
*builtin_uint32
;
2218 struct type
*builtin_int64
;
2219 struct type
*builtin_uint64
;
2220 struct type
*builtin_int128
;
2221 struct type
*builtin_uint128
;
2223 /* Wide character types. */
2224 struct type
*builtin_char16
;
2225 struct type
*builtin_char32
;
2226 struct type
*builtin_wchar
;
2228 /* Pointer types. */
2230 /* * `pointer to data' type. Some target platforms use an implicitly
2231 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
2232 struct type
*builtin_data_ptr
;
2234 /* * `pointer to function (returning void)' type. Harvard
2235 architectures mean that ABI function and code pointers are not
2236 interconvertible. Similarly, since ANSI, C standards have
2237 explicitly said that pointers to functions and pointers to data
2238 are not interconvertible --- that is, you can't cast a function
2239 pointer to void * and back, and expect to get the same value.
2240 However, all function pointer types are interconvertible, so void
2241 (*) () can server as a generic function pointer. */
2243 struct type
*builtin_func_ptr
;
2245 /* * `function returning pointer to function (returning void)' type.
2246 The final void return type is not significant for it. */
2248 struct type
*builtin_func_func
;
2250 /* Special-purpose types. */
2252 /* * This type is used to represent a GDB internal function. */
2254 struct type
*internal_fn
;
2256 /* * This type is used to represent an xmethod. */
2257 struct type
*xmethod
;
2260 /* * Return the type table for the specified architecture. */
2262 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
2264 /* * Per-objfile types used by symbol readers. */
2268 /* Basic types based on the objfile architecture. */
2269 struct type
*builtin_void
;
2270 struct type
*builtin_char
;
2271 struct type
*builtin_short
;
2272 struct type
*builtin_int
;
2273 struct type
*builtin_long
;
2274 struct type
*builtin_long_long
;
2275 struct type
*builtin_signed_char
;
2276 struct type
*builtin_unsigned_char
;
2277 struct type
*builtin_unsigned_short
;
2278 struct type
*builtin_unsigned_int
;
2279 struct type
*builtin_unsigned_long
;
2280 struct type
*builtin_unsigned_long_long
;
2281 struct type
*builtin_half
;
2282 struct type
*builtin_float
;
2283 struct type
*builtin_double
;
2284 struct type
*builtin_long_double
;
2286 /* * This type is used to represent symbol addresses. */
2287 struct type
*builtin_core_addr
;
2289 /* * This type represents a type that was unrecognized in symbol
2291 struct type
*builtin_error
;
2293 /* * Types used for symbols with no debug information. */
2294 struct type
*nodebug_text_symbol
;
2295 struct type
*nodebug_text_gnu_ifunc_symbol
;
2296 struct type
*nodebug_got_plt_symbol
;
2297 struct type
*nodebug_data_symbol
;
2298 struct type
*nodebug_unknown_symbol
;
2299 struct type
*nodebug_tls_symbol
;
2302 /* * Return the type table for the specified objfile. */
2304 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
2306 /* Explicit floating-point formats. See "floatformat.h". */
2307 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
2308 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
2309 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2310 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2311 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2312 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2313 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2314 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2315 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2316 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2317 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2318 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2319 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2321 /* Allocate space for storing data associated with a particular
2322 type. We ensure that the space is allocated using the same
2323 mechanism that was used to allocate the space for the type
2324 structure itself. I.e. if the type is on an objfile's
2325 objfile_obstack, then the space for data associated with that type
2326 will also be allocated on the objfile_obstack. If the type is
2327 associated with a gdbarch, then the space for data associated with that
2328 type will also be allocated on the gdbarch_obstack.
2330 If a type is not associated with neither an objfile or a gdbarch then
2331 you should not use this macro to allocate space for data, instead you
2332 should call xmalloc directly, and ensure the memory is correctly freed
2333 when it is no longer needed. */
2335 #define TYPE_ALLOC(t,size) \
2336 (obstack_alloc (((t)->is_objfile_owned () \
2337 ? &((t)->objfile_owner ()->objfile_obstack) \
2338 : gdbarch_obstack ((t)->arch_owner ())), \
2342 /* See comment on TYPE_ALLOC. */
2344 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2346 /* Use alloc_type to allocate a type owned by an objfile. Use
2347 alloc_type_arch to allocate a type owned by an architecture. Use
2348 alloc_type_copy to allocate a type with the same owner as a
2349 pre-existing template type, no matter whether objfile or
2351 extern struct type
*alloc_type (struct objfile
*);
2352 extern struct type
*alloc_type_arch (struct gdbarch
*);
2353 extern struct type
*alloc_type_copy (const struct type
*);
2355 /* * This returns the target type (or NULL) of TYPE, also skipping
2358 extern struct type
*get_target_type (struct type
*type
);
2360 /* Return the equivalent of TYPE_LENGTH, but in number of target
2361 addressable memory units of the associated gdbarch instead of bytes. */
2363 extern unsigned int type_length_units (struct type
*type
);
2365 /* * Helper function to construct objfile-owned types. */
2367 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2369 extern struct type
*init_integer_type (struct objfile
*, int, int,
2371 extern struct type
*init_character_type (struct objfile
*, int, int,
2373 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2375 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2376 const struct floatformat
**,
2377 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2378 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2379 extern bool can_create_complex_type (struct type
*);
2380 extern struct type
*init_complex_type (const char *, struct type
*);
2381 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2383 extern struct type
*init_fixed_point_type (struct objfile
*, int, int,
2386 /* Helper functions to construct architecture-owned types. */
2387 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2389 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2391 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2393 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2395 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2396 const struct floatformat
**);
2397 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2398 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2401 /* Helper functions to construct a struct or record type. An
2402 initially empty type is created using arch_composite_type().
2403 Fields are then added using append_composite_type_field*(). A union
2404 type has its size set to the largest field. A struct type has each
2405 field packed against the previous. */
2407 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2408 const char *name
, enum type_code code
);
2409 extern void append_composite_type_field (struct type
*t
, const char *name
,
2410 struct type
*field
);
2411 extern void append_composite_type_field_aligned (struct type
*t
,
2415 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2416 struct type
*field
);
2418 /* Helper functions to construct a bit flags type. An initially empty
2419 type is created using arch_flag_type(). Flags are then added using
2420 append_flag_type_field() and append_flag_type_flag(). */
2421 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2422 const char *name
, int bit
);
2423 extern void append_flags_type_field (struct type
*type
,
2424 int start_bitpos
, int nr_bits
,
2425 struct type
*field_type
, const char *name
);
2426 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2429 extern void make_vector_type (struct type
*array_type
);
2430 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2432 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2433 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2434 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2437 extern struct type
*make_reference_type (struct type
*, struct type
**,
2440 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2442 extern struct type
*make_restrict_type (struct type
*);
2444 extern struct type
*make_unqualified_type (struct type
*);
2446 extern struct type
*make_atomic_type (struct type
*);
2448 extern void replace_type (struct type
*, struct type
*);
2450 extern type_instance_flags address_space_name_to_type_instance_flags
2451 (struct gdbarch
*, const char *);
2453 extern const char *address_space_type_instance_flags_to_name
2454 (struct gdbarch
*, type_instance_flags
);
2456 extern struct type
*make_type_with_address_space
2457 (struct type
*type
, type_instance_flags space_identifier
);
2459 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2461 extern struct type
*lookup_methodptr_type (struct type
*);
2463 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2464 struct type
*to_type
, struct field
*args
,
2465 int nargs
, int varargs
);
2467 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2470 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2472 extern struct type
*allocate_stub_method (struct type
*);
2474 extern const char *type_name_or_error (struct type
*type
);
2478 /* The field of the element, or NULL if no element was found. */
2479 struct field
*field
;
2481 /* The bit offset of the element in the parent structure. */
2485 /* Given a type TYPE, lookup the field and offset of the component named
2488 TYPE can be either a struct or union, or a pointer or reference to
2489 a struct or union. If it is a pointer or reference, its target
2490 type is automatically used. Thus '.' and '->' are interchangable,
2491 as specified for the definitions of the expression element types
2492 STRUCTOP_STRUCT and STRUCTOP_PTR.
2494 If NOERR is nonzero, the returned structure will have field set to
2495 NULL if there is no component named NAME.
2497 If the component NAME is a field in an anonymous substructure of
2498 TYPE, the returned offset is a "global" offset relative to TYPE
2499 rather than an offset within the substructure. */
2501 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2503 /* Given a type TYPE, lookup the type of the component named NAME.
2505 TYPE can be either a struct or union, or a pointer or reference to
2506 a struct or union. If it is a pointer or reference, its target
2507 type is automatically used. Thus '.' and '->' are interchangable,
2508 as specified for the definitions of the expression element types
2509 STRUCTOP_STRUCT and STRUCTOP_PTR.
2511 If NOERR is nonzero, return NULL if there is no component named
2514 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2516 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2518 extern struct type
*lookup_pointer_type (struct type
*);
2520 extern struct type
*make_function_type (struct type
*, struct type
**);
2522 extern struct type
*lookup_function_type (struct type
*);
2524 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2528 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2532 extern struct type
*create_array_type_with_stride
2533 (struct type
*, struct type
*, struct type
*,
2534 struct dynamic_prop
*, unsigned int);
2536 extern struct type
*create_range_type (struct type
*, struct type
*,
2537 const struct dynamic_prop
*,
2538 const struct dynamic_prop
*,
2541 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2542 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2545 extern struct type
* create_range_type_with_stride
2546 (struct type
*result_type
, struct type
*index_type
,
2547 const struct dynamic_prop
*low_bound
,
2548 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2549 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2551 extern struct type
*create_array_type (struct type
*, struct type
*,
2554 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2556 extern struct type
*create_string_type (struct type
*, struct type
*,
2558 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2560 extern struct type
*create_set_type (struct type
*, struct type
*);
2562 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2565 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2568 extern ULONGEST
get_unsigned_type_max (struct type
*);
2570 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2572 extern CORE_ADDR
get_pointer_type_max (struct type
*);
2574 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2575 ADDR specifies the location of the variable the type is bound to.
2576 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2577 static properties is returned. */
2578 extern struct type
*resolve_dynamic_type
2579 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2582 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2583 extern int is_dynamic_type (struct type
*type
);
2585 extern struct type
*check_typedef (struct type
*);
2587 extern void check_stub_method_group (struct type
*, int);
2589 extern char *gdb_mangle_name (struct type
*, int, int);
2591 extern struct type
*lookup_typename (const struct language_defn
*,
2592 const char *, const struct block
*, int);
2594 extern struct type
*lookup_template_type (const char *, struct type
*,
2595 const struct block
*);
2597 extern int get_vptr_fieldno (struct type
*, struct type
**);
2599 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
2602 Return true if the two bounds are available, false otherwise. */
2604 extern bool get_discrete_bounds (struct type
*type
, LONGEST
*lowp
,
2607 /* If TYPE's low bound is a known constant, return it, else return nullopt. */
2609 extern gdb::optional
<LONGEST
> get_discrete_low_bound (struct type
*type
);
2611 /* If TYPE's high bound is a known constant, return it, else return nullopt. */
2613 extern gdb::optional
<LONGEST
> get_discrete_high_bound (struct type
*type
);
2615 /* Assuming TYPE is a simple, non-empty array type, compute its upper
2616 and lower bound. Save the low bound into LOW_BOUND if not NULL.
2617 Save the high bound into HIGH_BOUND if not NULL.
2619 Return true if the operation was successful. Return false otherwise,
2620 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. */
2622 extern bool get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2623 LONGEST
*high_bound
);
2625 extern gdb::optional
<LONGEST
> discrete_position (struct type
*type
,
2628 extern int class_types_same_p (const struct type
*, const struct type
*);
2630 extern int is_ancestor (struct type
*, struct type
*);
2632 extern int is_public_ancestor (struct type
*, struct type
*);
2634 extern int is_unique_ancestor (struct type
*, struct value
*);
2636 /* Overload resolution */
2638 /* * Badness if parameter list length doesn't match arg list length. */
2639 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2641 /* * Dummy badness value for nonexistent parameter positions. */
2642 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2643 /* * Badness if no conversion among types. */
2644 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2646 /* * Badness of an exact match. */
2647 extern const struct rank EXACT_MATCH_BADNESS
;
2649 /* * Badness of integral promotion. */
2650 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2651 /* * Badness of floating promotion. */
2652 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2653 /* * Badness of converting a derived class pointer
2654 to a base class pointer. */
2655 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2656 /* * Badness of integral conversion. */
2657 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2658 /* * Badness of floating conversion. */
2659 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2660 /* * Badness of integer<->floating conversions. */
2661 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2662 /* * Badness of conversion of pointer to void pointer. */
2663 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2664 /* * Badness of conversion to boolean. */
2665 extern const struct rank BOOL_CONVERSION_BADNESS
;
2666 /* * Badness of converting derived to base class. */
2667 extern const struct rank BASE_CONVERSION_BADNESS
;
2668 /* * Badness of converting from non-reference to reference. Subrank
2669 is the type of reference conversion being done. */
2670 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2671 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2672 /* * Conversion to rvalue reference. */
2673 #define REFERENCE_CONVERSION_RVALUE 1
2674 /* * Conversion to const lvalue reference. */
2675 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2677 /* * Badness of converting integer 0 to NULL pointer. */
2678 extern const struct rank NULL_POINTER_CONVERSION
;
2679 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2681 extern const struct rank CV_CONVERSION_BADNESS
;
2682 #define CV_CONVERSION_CONST 1
2683 #define CV_CONVERSION_VOLATILE 2
2685 /* Non-standard conversions allowed by the debugger */
2687 /* * Converting a pointer to an int is usually OK. */
2688 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2690 /* * Badness of converting a (non-zero) integer constant
2692 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2694 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2695 extern int compare_ranks (struct rank a
, struct rank b
);
2697 extern int compare_badness (const badness_vector
&,
2698 const badness_vector
&);
2700 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2701 gdb::array_view
<value
*> args
);
2703 extern struct rank
rank_one_type (struct type
*, struct type
*,
2706 extern void recursive_dump_type (struct type
*, int);
2708 extern int field_is_static (struct field
*);
2712 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2713 const struct value_print_options
*,
2714 int, struct ui_file
*);
2716 extern int can_dereference (struct type
*);
2718 extern int is_integral_type (struct type
*);
2720 extern int is_floating_type (struct type
*);
2722 extern int is_scalar_type (struct type
*type
);
2724 extern int is_scalar_type_recursive (struct type
*);
2726 extern int class_or_union_p (const struct type
*);
2728 extern void maintenance_print_type (const char *, int);
2730 extern htab_up
create_copied_types_hash (struct objfile
*objfile
);
2732 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2734 htab_t copied_types
);
2736 extern struct type
*copy_type (const struct type
*type
);
2738 extern bool types_equal (struct type
*, struct type
*);
2740 extern bool types_deeply_equal (struct type
*, struct type
*);
2742 extern int type_not_allocated (const struct type
*type
);
2744 extern int type_not_associated (const struct type
*type
);
2746 /* Return True if TYPE is a TYPE_CODE_FIXED_POINT or if TYPE is
2747 a range type whose base type is a TYPE_CODE_FIXED_POINT. */
2748 extern bool is_fixed_point_type (struct type
*type
);
2750 /* Allocate a fixed-point type info for TYPE. This should only be
2751 called by INIT_FIXED_POINT_SPECIFIC. */
2752 extern void allocate_fixed_point_type_info (struct type
*type
);
2754 /* * When the type includes explicit byte ordering, return that.
2755 Otherwise, the byte ordering from gdbarch_byte_order for
2756 the type's arch is returned. */
2758 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2760 /* A flag to enable printing of debugging information of C++
2763 extern unsigned int overload_debug
;
2765 #endif /* GDBTYPES_H */