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 union field_location loc
;
659 /* * For a function or member type, this is 1 if the argument is
660 marked artificial. Artificial arguments should not be shown
661 to the user. For TYPE_CODE_RANGE it is set if the specific
662 bound is not defined. */
664 unsigned int artificial
: 1;
666 /* * Discriminant for union field_location. */
668 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
670 /* * Size of this field, in bits, or zero if not packed.
671 If non-zero in an array type, indicates the element size in
672 bits (used only in Ada at the moment).
673 For an unpacked field, the field's type's length
674 says how many bytes the field occupies. */
676 unsigned int bitsize
: 28;
678 /* * In a struct or union type, type of this field.
679 - In a function or member type, type of this argument.
680 - In an array type, the domain-type of the array. */
684 /* * Name of field, value or argument.
685 NULL for range bounds, array domains, and member function
693 ULONGEST
bit_stride () const
695 if (this->flag_is_byte_stride
)
696 return this->stride
.const_val () * 8;
698 return this->stride
.const_val ();
701 /* * Low bound of range. */
703 struct dynamic_prop low
;
705 /* * High bound of range. */
707 struct dynamic_prop high
;
709 /* The stride value for this range. This can be stored in bits or bytes
710 based on the value of BYTE_STRIDE_P. It is optional to have a stride
711 value, if this range has no stride value defined then this will be set
712 to the constant zero. */
714 struct dynamic_prop stride
;
716 /* * The bias. Sometimes a range value is biased before storage.
717 The bias is added to the stored bits to form the true value. */
721 /* True if HIGH range bound contains the number of elements in the
722 subrange. This affects how the final high bound is computed. */
724 unsigned int flag_upper_bound_is_count
: 1;
726 /* True if LOW or/and HIGH are resolved into a static bound from
729 unsigned int flag_bound_evaluated
: 1;
731 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
733 unsigned int flag_is_byte_stride
: 1;
736 /* Compare two range_bounds objects for equality. Simply does
737 memberwise comparison. */
738 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
740 /* Compare two range_bounds objects for inequality. */
741 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
748 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
749 point to cplus_struct_default, a default static instance of a
750 struct cplus_struct_type. */
752 struct cplus_struct_type
*cplus_stuff
;
754 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
755 provides additional information. */
757 struct gnat_aux_type
*gnat_stuff
;
759 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
760 floatformat object that describes the floating-point value
761 that resides within the type. */
763 const struct floatformat
*floatformat
;
765 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
767 struct func_type
*func_stuff
;
769 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
770 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
773 struct type
*self_type
;
775 /* * For TYPE_CODE_FIXED_POINT types, the info necessary to decode
776 values of that type. */
777 struct fixed_point_type_info
*fixed_point_info
;
779 /* * An integer-like scalar type may be stored in just part of its
780 enclosing storage bytes. This structure describes this
784 /* * The bit size of the integer. This can be 0. For integers
785 that fill their storage (the ordinary case), this field holds
786 the byte size times 8. */
787 unsigned short bit_size
;
788 /* * The bit offset of the integer. This is ordinarily 0, and can
789 only be non-zero if the bit size is less than the storage
791 unsigned short bit_offset
;
795 /* * Main structure representing a type in GDB.
797 This structure is space-critical. Its layout has been tweaked to
798 reduce the space used. */
802 /* * Code for kind of type. */
804 ENUM_BITFIELD(type_code
) code
: 8;
806 /* * Flags about this type. These fields appear at this location
807 because they packs nicely here. See the TYPE_* macros for
808 documentation about these fields. */
810 unsigned int m_flag_unsigned
: 1;
811 unsigned int m_flag_nosign
: 1;
812 unsigned int m_flag_stub
: 1;
813 unsigned int m_flag_target_stub
: 1;
814 unsigned int m_flag_prototyped
: 1;
815 unsigned int m_flag_varargs
: 1;
816 unsigned int m_flag_vector
: 1;
817 unsigned int m_flag_stub_supported
: 1;
818 unsigned int m_flag_gnu_ifunc
: 1;
819 unsigned int m_flag_fixed_instance
: 1;
820 unsigned int m_flag_objfile_owned
: 1;
821 unsigned int m_flag_endianity_not_default
: 1;
823 /* * True if this type was declared with "class" rather than
826 unsigned int m_flag_declared_class
: 1;
828 /* * True if this is an enum type with disjoint values. This
829 affects how the enum is printed. */
831 unsigned int m_flag_flag_enum
: 1;
833 /* * A discriminant telling us which field of the type_specific
834 union is being used for this type, if any. */
836 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
838 /* * Number of fields described for this type. This field appears
839 at this location because it packs nicely here. */
843 /* * Name of this type, or NULL if none.
845 This is used for printing only. For looking up a name, look for
846 a symbol in the VAR_DOMAIN. This is generally allocated in the
847 objfile's obstack. However coffread.c uses malloc. */
851 /* * Every type is now associated with a particular objfile, and the
852 type is allocated on the objfile_obstack for that objfile. One
853 problem however, is that there are times when gdb allocates new
854 types while it is not in the process of reading symbols from a
855 particular objfile. Fortunately, these happen when the type
856 being created is a derived type of an existing type, such as in
857 lookup_pointer_type(). So we can just allocate the new type
858 using the same objfile as the existing type, but to do this we
859 need a backpointer to the objfile from the existing type. Yes
860 this is somewhat ugly, but without major overhaul of the internal
861 type system, it can't be avoided for now. */
863 union type_owner m_owner
;
865 /* * For a pointer type, describes the type of object pointed to.
866 - For an array type, describes the type of the elements.
867 - For a function or method type, describes the type of the return value.
868 - For a range type, describes the type of the full range.
869 - For a complex type, describes the type of each coordinate.
870 - For a special record or union type encoding a dynamic-sized type
871 in GNAT, a memoized pointer to a corresponding static version of
873 - Unused otherwise. */
875 struct type
*target_type
;
877 /* * For structure and union types, a description of each field.
878 For set and pascal array types, there is one "field",
879 whose type is the domain type of the set or array.
880 For range types, there are two "fields",
881 the minimum and maximum values (both inclusive).
882 For enum types, each possible value is described by one "field".
883 For a function or method type, a "field" for each parameter.
884 For C++ classes, there is one field for each base class (if it is
885 a derived class) plus one field for each class data member. Member
886 functions are recorded elsewhere.
888 Using a pointer to a separate array of fields
889 allows all types to have the same size, which is useful
890 because we can allocate the space for a type before
891 we know what to put in it. */
895 struct field
*fields
;
897 /* * Union member used for range types. */
899 struct range_bounds
*bounds
;
901 /* If this is a scalar type, then this is its corresponding
903 struct type
*complex_type
;
907 /* * Slot to point to additional language-specific fields of this
910 union type_specific type_specific
;
912 /* * Contains all dynamic type properties. */
913 struct dynamic_prop_list
*dyn_prop_list
;
916 /* * Number of bits allocated for alignment. */
918 #define TYPE_ALIGN_BITS 8
920 /* * A ``struct type'' describes a particular instance of a type, with
921 some particular qualification. */
925 /* Get the type code of this type.
927 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
928 type, you need to do `check_typedef (type)->code ()`. */
929 type_code
code () const
931 return this->main_type
->code
;
934 /* Set the type code of this type. */
935 void set_code (type_code code
)
937 this->main_type
->code
= code
;
940 /* Get the name of this type. */
941 const char *name () const
943 return this->main_type
->name
;
946 /* Set the name of this type. */
947 void set_name (const char *name
)
949 this->main_type
->name
= name
;
952 /* Get the number of fields of this type. */
953 int num_fields () const
955 return this->main_type
->nfields
;
958 /* Set the number of fields of this type. */
959 void set_num_fields (int num_fields
)
961 this->main_type
->nfields
= num_fields
;
964 /* Get the fields array of this type. */
965 struct field
*fields () const
967 return this->main_type
->flds_bnds
.fields
;
970 /* Get the field at index IDX. */
971 struct field
&field (int idx
) const
973 return this->fields ()[idx
];
976 /* Set the fields array of this type. */
977 void set_fields (struct field
*fields
)
979 this->main_type
->flds_bnds
.fields
= fields
;
982 type
*index_type () const
984 return this->field (0).type ();
987 void set_index_type (type
*index_type
)
989 this->field (0).set_type (index_type
);
992 /* Return the instance flags converted to the correct type. */
993 const type_instance_flags
instance_flags () const
995 return (enum type_instance_flag_value
) this->m_instance_flags
;
998 /* Set the instance flags. */
999 void set_instance_flags (type_instance_flags flags
)
1001 this->m_instance_flags
= flags
;
1004 /* Get the bounds bounds of this type. The type must be a range type. */
1005 range_bounds
*bounds () const
1007 switch (this->code ())
1009 case TYPE_CODE_RANGE
:
1010 return this->main_type
->flds_bnds
.bounds
;
1012 case TYPE_CODE_ARRAY
:
1013 case TYPE_CODE_STRING
:
1014 return this->index_type ()->bounds ();
1017 gdb_assert_not_reached
1018 ("type::bounds called on type with invalid code");
1022 /* Set the bounds of this type. The type must be a range type. */
1023 void set_bounds (range_bounds
*bounds
)
1025 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1027 this->main_type
->flds_bnds
.bounds
= bounds
;
1030 ULONGEST
bit_stride () const
1032 if (this->code () == TYPE_CODE_ARRAY
&& this->field (0).bitsize
!= 0)
1033 return this->field (0).bitsize
;
1034 return this->bounds ()->bit_stride ();
1037 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1038 the type is signed (unless TYPE_NOSIGN is set). */
1040 bool is_unsigned () const
1042 return this->main_type
->m_flag_unsigned
;
1045 void set_is_unsigned (bool is_unsigned
)
1047 this->main_type
->m_flag_unsigned
= is_unsigned
;
1050 /* No sign for this type. In C++, "char", "signed char", and
1051 "unsigned char" are distinct types; so we need an extra flag to
1052 indicate the absence of a sign! */
1054 bool has_no_signedness () const
1056 return this->main_type
->m_flag_nosign
;
1059 void set_has_no_signedness (bool has_no_signedness
)
1061 this->main_type
->m_flag_nosign
= has_no_signedness
;
1064 /* This appears in a type's flags word if it is a stub type (e.g.,
1065 if someone referenced a type that wasn't defined in a source file
1066 via (struct sir_not_appearing_in_this_film *)). */
1068 bool is_stub () const
1070 return this->main_type
->m_flag_stub
;
1073 void set_is_stub (bool is_stub
)
1075 this->main_type
->m_flag_stub
= is_stub
;
1078 /* The target type of this type is a stub type, and this type needs
1079 to be updated if it gets un-stubbed in check_typedef. Used for
1080 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
1081 based on the TYPE_LENGTH of the target type. Also, set for
1082 TYPE_CODE_TYPEDEF. */
1084 bool target_is_stub () const
1086 return this->main_type
->m_flag_target_stub
;
1089 void set_target_is_stub (bool target_is_stub
)
1091 this->main_type
->m_flag_target_stub
= target_is_stub
;
1094 /* This is a function type which appears to have a prototype. We
1095 need this for function calls in order to tell us if it's necessary
1096 to coerce the args, or to just do the standard conversions. This
1097 is used with a short field. */
1099 bool is_prototyped () const
1101 return this->main_type
->m_flag_prototyped
;
1104 void set_is_prototyped (bool is_prototyped
)
1106 this->main_type
->m_flag_prototyped
= is_prototyped
;
1109 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
1112 bool has_varargs () const
1114 return this->main_type
->m_flag_varargs
;
1117 void set_has_varargs (bool has_varargs
)
1119 this->main_type
->m_flag_varargs
= has_varargs
;
1122 /* Identify a vector type. Gcc is handling this by adding an extra
1123 attribute to the array type. We slurp that in as a new flag of a
1124 type. This is used only in dwarf2read.c. */
1126 bool is_vector () const
1128 return this->main_type
->m_flag_vector
;
1131 void set_is_vector (bool is_vector
)
1133 this->main_type
->m_flag_vector
= is_vector
;
1136 /* This debug target supports TYPE_STUB(t). In the unsupported case
1137 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
1138 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
1139 guessed the TYPE_STUB(t) value (see dwarfread.c). */
1141 bool stub_is_supported () const
1143 return this->main_type
->m_flag_stub_supported
;
1146 void set_stub_is_supported (bool stub_is_supported
)
1148 this->main_type
->m_flag_stub_supported
= stub_is_supported
;
1151 /* Used only for TYPE_CODE_FUNC where it specifies the real function
1152 address is returned by this function call. TYPE_TARGET_TYPE
1153 determines the final returned function type to be presented to
1156 bool is_gnu_ifunc () const
1158 return this->main_type
->m_flag_gnu_ifunc
;
1161 void set_is_gnu_ifunc (bool is_gnu_ifunc
)
1163 this->main_type
->m_flag_gnu_ifunc
= is_gnu_ifunc
;
1166 /* The debugging formats (especially STABS) do not contain enough
1167 information to represent all Ada types---especially those whose
1168 size depends on dynamic quantities. Therefore, the GNAT Ada
1169 compiler includes extra information in the form of additional type
1170 definitions connected by naming conventions. This flag indicates
1171 that the type is an ordinary (unencoded) GDB type that has been
1172 created from the necessary run-time information, and does not need
1173 further interpretation. Optionally marks ordinary, fixed-size GDB
1176 bool is_fixed_instance () const
1178 return this->main_type
->m_flag_fixed_instance
;
1181 void set_is_fixed_instance (bool is_fixed_instance
)
1183 this->main_type
->m_flag_fixed_instance
= is_fixed_instance
;
1186 /* A compiler may supply dwarf instrumentation that indicates the desired
1187 endian interpretation of the variable differs from the native endian
1190 bool endianity_is_not_default () const
1192 return this->main_type
->m_flag_endianity_not_default
;
1195 void set_endianity_is_not_default (bool endianity_is_not_default
)
1197 this->main_type
->m_flag_endianity_not_default
= endianity_is_not_default
;
1201 /* True if this type was declared using the "class" keyword. This is
1202 only valid for C++ structure and enum types. If false, a structure
1203 was declared as a "struct"; if true it was declared "class". For
1204 enum types, this is true when "enum class" or "enum struct" was
1205 used to declare the type. */
1207 bool is_declared_class () const
1209 return this->main_type
->m_flag_declared_class
;
1212 void set_is_declared_class (bool is_declared_class
) const
1214 this->main_type
->m_flag_declared_class
= is_declared_class
;
1217 /* True if this type is a "flag" enum. A flag enum is one where all
1218 the values are pairwise disjoint when "and"ed together. This
1219 affects how enum values are printed. */
1221 bool is_flag_enum () const
1223 return this->main_type
->m_flag_flag_enum
;
1226 void set_is_flag_enum (bool is_flag_enum
)
1228 this->main_type
->m_flag_flag_enum
= is_flag_enum
;
1231 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return a reference
1232 to this type's fixed_point_info. */
1234 struct fixed_point_type_info
&fixed_point_info () const
1236 gdb_assert (this->code () == TYPE_CODE_FIXED_POINT
);
1237 gdb_assert (this->main_type
->type_specific
.fixed_point_info
!= nullptr);
1239 return *this->main_type
->type_specific
.fixed_point_info
;
1242 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, set this type's
1243 fixed_point_info to INFO. */
1245 void set_fixed_point_info (struct fixed_point_type_info
*info
) const
1247 gdb_assert (this->code () == TYPE_CODE_FIXED_POINT
);
1249 this->main_type
->type_specific
.fixed_point_info
= info
;
1252 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return its base type.
1254 In other words, this returns the type after having peeled all
1255 intermediate type layers (such as TYPE_CODE_RANGE, for instance).
1256 The TYPE_CODE of the type returned is guaranteed to be
1257 a TYPE_CODE_FIXED_POINT. */
1259 struct type
*fixed_point_type_base_type ();
1261 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return its scaling
1264 const gdb_mpq
&fixed_point_scaling_factor ();
1266 /* * Return the dynamic property of the requested KIND from this type's
1267 list of dynamic properties. */
1268 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1270 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1271 property to this type.
1273 This function assumes that this type is objfile-owned. */
1274 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1276 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1277 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1279 /* Return true if this type is owned by an objfile. Return false if it is
1280 owned by an architecture. */
1281 bool is_objfile_owned () const
1283 return this->main_type
->m_flag_objfile_owned
;
1286 /* Set the owner of the type to be OBJFILE. */
1287 void set_owner (objfile
*objfile
)
1289 gdb_assert (objfile
!= nullptr);
1291 this->main_type
->m_owner
.objfile
= objfile
;
1292 this->main_type
->m_flag_objfile_owned
= true;
1295 /* Set the owner of the type to be ARCH. */
1296 void set_owner (gdbarch
*arch
)
1298 gdb_assert (arch
!= nullptr);
1300 this->main_type
->m_owner
.gdbarch
= arch
;
1301 this->main_type
->m_flag_objfile_owned
= false;
1304 /* Return the objfile owner of this type.
1306 Return nullptr if this type is not objfile-owned. */
1307 struct objfile
*objfile_owner () const
1309 if (!this->is_objfile_owned ())
1312 return this->main_type
->m_owner
.objfile
;
1315 /* Return the gdbarch owner of this type.
1317 Return nullptr if this type is not gdbarch-owned. */
1318 gdbarch
*arch_owner () const
1320 if (this->is_objfile_owned ())
1323 return this->main_type
->m_owner
.gdbarch
;
1326 /* Return the type's architecture. For types owned by an
1327 architecture, that architecture is returned. For types owned by an
1328 objfile, that objfile's architecture is returned.
1330 The return value is always non-nullptr. */
1331 gdbarch
*arch () const;
1333 /* * Return true if this is an integer type whose logical (bit) size
1334 differs from its storage size; false otherwise. Always return
1335 false for non-integer (i.e., non-TYPE_SPECIFIC_INT) types. */
1336 bool bit_size_differs_p () const
1338 return (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
1339 && main_type
->type_specific
.int_stuff
.bit_size
!= 8 * length
);
1342 /* * Return the logical (bit) size for this integer type. Only
1343 valid for integer (TYPE_SPECIFIC_INT) types. */
1344 unsigned short bit_size () const
1346 gdb_assert (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
);
1347 return main_type
->type_specific
.int_stuff
.bit_size
;
1350 /* * Return the bit offset for this integer type. Only valid for
1351 integer (TYPE_SPECIFIC_INT) types. */
1352 unsigned short bit_offset () const
1354 gdb_assert (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
);
1355 return main_type
->type_specific
.int_stuff
.bit_offset
;
1358 /* Return true if this is a pointer or reference type. */
1359 bool is_pointer_or_reference () const
1361 return this->code () == TYPE_CODE_PTR
|| TYPE_IS_REFERENCE (this);
1364 /* * Type that is a pointer to this type.
1365 NULL if no such pointer-to type is known yet.
1366 The debugger may add the address of such a type
1367 if it has to construct one later. */
1369 struct type
*pointer_type
;
1371 /* * C++: also need a reference type. */
1373 struct type
*reference_type
;
1375 /* * A C++ rvalue reference type added in C++11. */
1377 struct type
*rvalue_reference_type
;
1379 /* * Variant chain. This points to a type that differs from this
1380 one only in qualifiers and length. Currently, the possible
1381 qualifiers are const, volatile, code-space, data-space, and
1382 address class. The length may differ only when one of the
1383 address class flags are set. The variants are linked in a
1384 circular ring and share MAIN_TYPE. */
1388 /* * The alignment for this type. Zero means that the alignment was
1389 not specified in the debug info. Note that this is stored in a
1390 funny way: as the log base 2 (plus 1) of the alignment; so a
1391 value of 1 means the alignment is 1, and a value of 9 means the
1392 alignment is 256. */
1394 unsigned align_log2
: TYPE_ALIGN_BITS
;
1396 /* * Flags specific to this instance of the type, indicating where
1399 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1400 binary or-ed with the target type, with a special case for
1401 address class and space class. For example if this typedef does
1402 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1403 instance flags are completely inherited from the target type. No
1404 qualifiers can be cleared by the typedef. See also
1406 unsigned m_instance_flags
: 9;
1408 /* * Length of storage for a value of this type. The value is the
1409 expression in host bytes of what sizeof(type) would return. This
1410 size includes padding. For example, an i386 extended-precision
1411 floating point value really only occupies ten bytes, but most
1412 ABI's declare its size to be 12 bytes, to preserve alignment.
1413 A `struct type' representing such a floating-point type would
1414 have a `length' value of 12, even though the last two bytes are
1417 Since this field is expressed in host bytes, its value is appropriate
1418 to pass to memcpy and such (it is assumed that GDB itself always runs
1419 on an 8-bits addressable architecture). However, when using it for
1420 target address arithmetic (e.g. adding it to a target address), the
1421 type_length_units function should be used in order to get the length
1422 expressed in target addressable memory units. */
1426 /* * Core type, shared by a group of qualified types. */
1428 struct main_type
*main_type
;
1434 /* * The overloaded name.
1435 This is generally allocated in the objfile's obstack.
1436 However stabsread.c sometimes uses malloc. */
1440 /* * The number of methods with this name. */
1444 /* * The list of methods. */
1446 struct fn_field
*fn_fields
;
1453 /* * If is_stub is clear, this is the mangled name which we can look
1454 up to find the address of the method (FIXME: it would be cleaner
1455 to have a pointer to the struct symbol here instead).
1457 If is_stub is set, this is the portion of the mangled name which
1458 specifies the arguments. For example, "ii", if there are two int
1459 arguments, or "" if there are no arguments. See gdb_mangle_name
1460 for the conversion from this format to the one used if is_stub is
1463 const char *physname
;
1465 /* * The function type for the method.
1467 (This comment used to say "The return value of the method", but
1468 that's wrong. The function type is expected here, i.e. something
1469 with TYPE_CODE_METHOD, and *not* the return-value type). */
1473 /* * For virtual functions. First baseclass that defines this
1474 virtual function. */
1476 struct type
*fcontext
;
1480 unsigned int is_const
:1;
1481 unsigned int is_volatile
:1;
1482 unsigned int is_private
:1;
1483 unsigned int is_protected
:1;
1484 unsigned int is_artificial
:1;
1486 /* * A stub method only has some fields valid (but they are enough
1487 to reconstruct the rest of the fields). */
1489 unsigned int is_stub
:1;
1491 /* * True if this function is a constructor, false otherwise. */
1493 unsigned int is_constructor
: 1;
1495 /* * True if this function is deleted, false otherwise. */
1497 unsigned int is_deleted
: 1;
1499 /* * DW_AT_defaulted attribute for this function. The value is one
1500 of the DW_DEFAULTED constants. */
1502 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1506 unsigned int dummy
:6;
1508 /* * Index into that baseclass's virtual function table, minus 2;
1509 else if static: VOFFSET_STATIC; else: 0. */
1511 unsigned int voffset
:16;
1513 #define VOFFSET_STATIC 1
1519 /* * Unqualified name to be prefixed by owning class qualified
1524 /* * Type this typedef named NAME represents. */
1528 /* * True if this field was declared protected, false otherwise. */
1529 unsigned int is_protected
: 1;
1531 /* * True if this field was declared private, false otherwise. */
1532 unsigned int is_private
: 1;
1535 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1536 TYPE_CODE_UNION nodes. */
1538 struct cplus_struct_type
1540 /* * Number of base classes this type derives from. The
1541 baseclasses are stored in the first N_BASECLASSES fields
1542 (i.e. the `fields' field of the struct type). The only fields
1543 of struct field that are used are: type, name, loc.bitpos. */
1545 short n_baseclasses
;
1547 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1548 All access to this field must be through TYPE_VPTR_FIELDNO as one
1549 thing it does is check whether the field has been initialized.
1550 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1551 which for portability reasons doesn't initialize this field.
1552 TYPE_VPTR_FIELDNO returns -1 for this case.
1554 If -1, we were unable to find the virtual function table pointer in
1555 initial symbol reading, and get_vptr_fieldno should be called to find
1556 it if possible. get_vptr_fieldno will update this field if possible.
1557 Otherwise the value is left at -1.
1559 Unused if this type does not have virtual functions. */
1563 /* * Number of methods with unique names. All overloaded methods
1564 with the same name count only once. */
1568 /* * Number of template arguments. */
1570 unsigned short n_template_arguments
;
1572 /* * One if this struct is a dynamic class, as defined by the
1573 Itanium C++ ABI: if it requires a virtual table pointer,
1574 because it or any of its base classes have one or more virtual
1575 member functions or virtual base classes. Minus one if not
1576 dynamic. Zero if not yet computed. */
1580 /* * The calling convention for this type, fetched from the
1581 DW_AT_calling_convention attribute. The value is one of the
1584 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1586 /* * The base class which defined the virtual function table pointer. */
1588 struct type
*vptr_basetype
;
1590 /* * For derived classes, the number of base classes is given by
1591 n_baseclasses and virtual_field_bits is a bit vector containing
1592 one bit per base class. If the base class is virtual, the
1593 corresponding bit will be set.
1598 class C : public B, public virtual A {};
1600 B is a baseclass of C; A is a virtual baseclass for C.
1601 This is a C++ 2.0 language feature. */
1603 B_TYPE
*virtual_field_bits
;
1605 /* * For classes with private fields, the number of fields is
1606 given by nfields and private_field_bits is a bit vector
1607 containing one bit per field.
1609 If the field is private, the corresponding bit will be set. */
1611 B_TYPE
*private_field_bits
;
1613 /* * For classes with protected fields, the number of fields is
1614 given by nfields and protected_field_bits is a bit vector
1615 containing one bit per field.
1617 If the field is private, the corresponding bit will be set. */
1619 B_TYPE
*protected_field_bits
;
1621 /* * For classes with fields to be ignored, either this is
1622 optimized out or this field has length 0. */
1624 B_TYPE
*ignore_field_bits
;
1626 /* * For classes, structures, and unions, a description of each
1627 field, which consists of an overloaded name, followed by the
1628 types of arguments that the method expects, and then the name
1629 after it has been renamed to make it distinct.
1631 fn_fieldlists points to an array of nfn_fields of these. */
1633 struct fn_fieldlist
*fn_fieldlists
;
1635 /* * typedefs defined inside this class. typedef_field points to
1636 an array of typedef_field_count elements. */
1638 struct decl_field
*typedef_field
;
1640 unsigned typedef_field_count
;
1642 /* * The nested types defined by this type. nested_types points to
1643 an array of nested_types_count elements. */
1645 struct decl_field
*nested_types
;
1647 unsigned nested_types_count
;
1649 /* * The template arguments. This is an array with
1650 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1653 struct symbol
**template_arguments
;
1656 /* * Struct used to store conversion rankings. */
1662 /* * When two conversions are of the same type and therefore have
1663 the same rank, subrank is used to differentiate the two.
1665 Eg: Two derived-class-pointer to base-class-pointer conversions
1666 would both have base pointer conversion rank, but the
1667 conversion with the shorter distance to the ancestor is
1668 preferable. 'subrank' would be used to reflect that. */
1673 /* * Used for ranking a function for overload resolution. */
1675 typedef std::vector
<rank
> badness_vector
;
1677 /* * GNAT Ada-specific information for various Ada types. */
1679 struct gnat_aux_type
1681 /* * Parallel type used to encode information about dynamic types
1682 used in Ada (such as variant records, variable-size array,
1684 struct type
* descriptive_type
;
1687 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1691 /* * The calling convention for targets supporting multiple ABIs.
1692 Right now this is only fetched from the Dwarf-2
1693 DW_AT_calling_convention attribute. The value is one of the
1696 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1698 /* * Whether this function normally returns to its caller. It is
1699 set from the DW_AT_noreturn attribute if set on the
1700 DW_TAG_subprogram. */
1702 unsigned int is_noreturn
: 1;
1704 /* * Only those DW_TAG_call_site's in this function that have
1705 DW_AT_call_tail_call set are linked in this list. Function
1706 without its tail call list complete
1707 (DW_AT_call_all_tail_calls or its superset
1708 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1709 DW_TAG_call_site's exist in such function. */
1711 struct call_site
*tail_call_list
;
1713 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1714 contains the method. */
1716 struct type
*self_type
;
1719 /* struct call_site_parameter can be referenced in callees by several ways. */
1721 enum call_site_parameter_kind
1723 /* * Use field call_site_parameter.u.dwarf_reg. */
1724 CALL_SITE_PARAMETER_DWARF_REG
,
1726 /* * Use field call_site_parameter.u.fb_offset. */
1727 CALL_SITE_PARAMETER_FB_OFFSET
,
1729 /* * Use field call_site_parameter.u.param_offset. */
1730 CALL_SITE_PARAMETER_PARAM_OFFSET
1733 struct call_site_target
1735 union field_location loc
;
1737 /* * Discriminant for union field_location. */
1739 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1742 union call_site_parameter_u
1744 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1745 as DWARF register number, for register passed
1750 /* * Offset from the callee's frame base, for stack passed
1751 parameters. This equals offset from the caller's stack
1754 CORE_ADDR fb_offset
;
1756 /* * Offset relative to the start of this PER_CU to
1757 DW_TAG_formal_parameter which is referenced by both
1758 caller and the callee. */
1760 cu_offset param_cu_off
;
1763 struct call_site_parameter
1765 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1767 union call_site_parameter_u u
;
1769 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1771 const gdb_byte
*value
;
1774 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1775 It may be NULL if not provided by DWARF. */
1777 const gdb_byte
*data_value
;
1778 size_t data_value_size
;
1781 /* * A place where a function gets called from, represented by
1782 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1786 /* * Address of the first instruction after this call. It must be
1787 the first field as we overload core_addr_hash and core_addr_eq
1792 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1794 struct call_site
*tail_call_next
;
1796 /* * Describe DW_AT_call_target. Missing attribute uses
1797 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1799 struct call_site_target target
;
1801 /* * Size of the PARAMETER array. */
1803 unsigned parameter_count
;
1805 /* * CU of the function where the call is located. It gets used
1806 for DWARF blocks execution in the parameter array below. */
1808 dwarf2_per_cu_data
*per_cu
;
1810 /* objfile of the function where the call is located. */
1812 dwarf2_per_objfile
*per_objfile
;
1814 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1816 struct call_site_parameter parameter
[1];
1819 /* The type-specific info for TYPE_CODE_FIXED_POINT types. */
1821 struct fixed_point_type_info
1823 /* The fixed point type's scaling factor. */
1824 gdb_mpq scaling_factor
;
1827 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1828 static structure. */
1830 extern const struct cplus_struct_type cplus_struct_default
;
1832 extern void allocate_cplus_struct_type (struct type
*);
1834 #define INIT_CPLUS_SPECIFIC(type) \
1835 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1836 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1837 &cplus_struct_default)
1839 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1841 #define HAVE_CPLUS_STRUCT(type) \
1842 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1843 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1845 #define INIT_NONE_SPECIFIC(type) \
1846 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1847 TYPE_MAIN_TYPE (type)->type_specific = {})
1849 extern const struct gnat_aux_type gnat_aux_default
;
1851 extern void allocate_gnat_aux_type (struct type
*);
1853 #define INIT_GNAT_SPECIFIC(type) \
1854 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1855 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1856 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1857 /* * A macro that returns non-zero if the type-specific data should be
1858 read as "gnat-stuff". */
1859 #define HAVE_GNAT_AUX_INFO(type) \
1860 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1862 /* * True if TYPE is known to be an Ada type of some kind. */
1863 #define ADA_TYPE_P(type) \
1864 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1865 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1866 && (type)->is_fixed_instance ()))
1868 #define INIT_FUNC_SPECIFIC(type) \
1869 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1870 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1871 TYPE_ZALLOC (type, \
1872 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1874 /* "struct fixed_point_type_info" has a field that has a destructor.
1875 See allocate_fixed_point_type_info to understand how this is
1877 #define INIT_FIXED_POINT_SPECIFIC(type) \
1878 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FIXED_POINT, \
1879 allocate_fixed_point_type_info (type))
1881 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1882 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1883 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1884 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1885 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1886 #define TYPE_CHAIN(thistype) (thistype)->chain
1887 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1888 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1889 so you only have to call check_typedef once. Since allocate_value
1890 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1891 #define TYPE_LENGTH(thistype) (thistype)->length
1893 /* * Return the alignment of the type in target addressable memory
1894 units, or 0 if no alignment was specified. */
1895 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1897 /* * Return the alignment of the type in target addressable memory
1898 units, or 0 if no alignment was specified. */
1899 extern unsigned type_raw_align (struct type
*);
1901 /* * Return the alignment of the type in target addressable memory
1902 units. Return 0 if the alignment cannot be determined; but note
1903 that this makes an effort to compute the alignment even it it was
1904 not specified in the debug info. */
1905 extern unsigned type_align (struct type
*);
1907 /* * Set the alignment of the type. The alignment must be a power of
1908 2. Returns false if the given value does not fit in the available
1909 space in struct type. */
1910 extern bool set_type_align (struct type
*, ULONGEST
);
1912 /* Property accessors for the type data location. */
1913 #define TYPE_DATA_LOCATION(thistype) \
1914 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1915 #define TYPE_DATA_LOCATION_BATON(thistype) \
1916 TYPE_DATA_LOCATION (thistype)->data.baton
1917 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1918 (TYPE_DATA_LOCATION (thistype)->const_val ())
1919 #define TYPE_DATA_LOCATION_KIND(thistype) \
1920 (TYPE_DATA_LOCATION (thistype)->kind ())
1921 #define TYPE_DYNAMIC_LENGTH(thistype) \
1922 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1924 /* Property accessors for the type allocated/associated. */
1925 #define TYPE_ALLOCATED_PROP(thistype) \
1926 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1927 #define TYPE_ASSOCIATED_PROP(thistype) \
1928 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1932 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1933 /* Do not call this, use TYPE_SELF_TYPE. */
1934 extern struct type
*internal_type_self_type (struct type
*);
1935 extern void set_type_self_type (struct type
*, struct type
*);
1937 extern int internal_type_vptr_fieldno (struct type
*);
1938 extern void set_type_vptr_fieldno (struct type
*, int);
1939 extern struct type
*internal_type_vptr_basetype (struct type
*);
1940 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1941 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1942 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1944 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1945 #define TYPE_SPECIFIC_FIELD(thistype) \
1946 TYPE_MAIN_TYPE(thistype)->type_specific_field
1947 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1948 where we're trying to print an Ada array using the C language.
1949 In that case, there is no "cplus_stuff", but the C language assumes
1950 that there is. What we do, in that case, is pretend that there is
1951 an implicit one which is the default cplus stuff. */
1952 #define TYPE_CPLUS_SPECIFIC(thistype) \
1953 (!HAVE_CPLUS_STRUCT(thistype) \
1954 ? (struct cplus_struct_type*)&cplus_struct_default \
1955 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1956 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1957 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1958 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1959 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1960 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1961 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1962 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1963 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1964 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1965 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1966 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1967 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1968 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1969 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1970 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1971 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1973 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1974 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1975 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1977 #define FIELD_NAME(thisfld) ((thisfld).name)
1978 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1979 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1980 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1981 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1982 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1983 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1984 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1985 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1986 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1987 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1988 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1989 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1990 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1991 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1992 #define SET_FIELD_PHYSNAME(thisfld, name) \
1993 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1994 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1995 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1996 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1997 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1998 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1999 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
2000 FIELD_DWARF_BLOCK (thisfld) = (addr))
2001 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
2002 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
2004 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
2005 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
2006 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
2007 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
2008 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
2009 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
2010 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
2011 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
2012 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
2013 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
2015 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
2016 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
2017 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
2018 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
2019 #define TYPE_FIELD_IGNORE_BITS(thistype) \
2020 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
2021 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
2022 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
2023 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
2024 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
2025 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
2026 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
2027 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
2028 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
2029 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
2030 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
2031 #define TYPE_FIELD_PRIVATE(thistype, n) \
2032 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
2033 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
2034 #define TYPE_FIELD_PROTECTED(thistype, n) \
2035 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
2036 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
2037 #define TYPE_FIELD_IGNORE(thistype, n) \
2038 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
2039 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
2040 #define TYPE_FIELD_VIRTUAL(thistype, n) \
2041 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
2042 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
2044 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
2045 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
2046 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
2047 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
2048 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
2050 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
2051 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
2052 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
2053 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
2054 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
2055 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
2057 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
2058 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
2059 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
2060 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
2061 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
2062 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
2063 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
2064 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
2065 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
2066 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
2067 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
2068 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
2069 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
2070 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
2071 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
2072 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
2073 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
2075 /* Accessors for typedefs defined by a class. */
2076 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
2077 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
2078 #define TYPE_TYPEDEF_FIELD(thistype, n) \
2079 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
2080 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
2081 TYPE_TYPEDEF_FIELD (thistype, n).name
2082 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
2083 TYPE_TYPEDEF_FIELD (thistype, n).type
2084 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
2085 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
2086 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
2087 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
2088 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
2089 TYPE_TYPEDEF_FIELD (thistype, n).is_private
2091 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
2092 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
2093 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
2094 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
2095 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
2096 TYPE_NESTED_TYPES_FIELD (thistype, n).name
2097 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
2098 TYPE_NESTED_TYPES_FIELD (thistype, n).type
2099 #define TYPE_NESTED_TYPES_COUNT(thistype) \
2100 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
2101 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
2102 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
2103 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
2104 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
2106 #define TYPE_IS_OPAQUE(thistype) \
2107 ((((thistype)->code () == TYPE_CODE_STRUCT) \
2108 || ((thistype)->code () == TYPE_CODE_UNION)) \
2109 && ((thistype)->num_fields () == 0) \
2110 && (!HAVE_CPLUS_STRUCT (thistype) \
2111 || TYPE_NFN_FIELDS (thistype) == 0) \
2112 && ((thistype)->is_stub () || !(thistype)->stub_is_supported ()))
2114 /* * A helper macro that returns the name of a type or "unnamed type"
2115 if the type has no name. */
2117 #define TYPE_SAFE_NAME(type) \
2118 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
2120 /* * A helper macro that returns the name of an error type. If the
2121 type has a name, it is used; otherwise, a default is used. */
2123 #define TYPE_ERROR_NAME(type) \
2124 (type->name () ? type->name () : _("<error type>"))
2126 /* Given TYPE, return its floatformat. */
2127 const struct floatformat
*floatformat_from_type (const struct type
*type
);
2131 /* Integral types. */
2133 /* Implicit size/sign (based on the architecture's ABI). */
2134 struct type
*builtin_void
;
2135 struct type
*builtin_char
;
2136 struct type
*builtin_short
;
2137 struct type
*builtin_int
;
2138 struct type
*builtin_long
;
2139 struct type
*builtin_signed_char
;
2140 struct type
*builtin_unsigned_char
;
2141 struct type
*builtin_unsigned_short
;
2142 struct type
*builtin_unsigned_int
;
2143 struct type
*builtin_unsigned_long
;
2144 struct type
*builtin_bfloat16
;
2145 struct type
*builtin_half
;
2146 struct type
*builtin_float
;
2147 struct type
*builtin_double
;
2148 struct type
*builtin_long_double
;
2149 struct type
*builtin_complex
;
2150 struct type
*builtin_double_complex
;
2151 struct type
*builtin_string
;
2152 struct type
*builtin_bool
;
2153 struct type
*builtin_long_long
;
2154 struct type
*builtin_unsigned_long_long
;
2155 struct type
*builtin_decfloat
;
2156 struct type
*builtin_decdouble
;
2157 struct type
*builtin_declong
;
2159 /* "True" character types.
2160 We use these for the '/c' print format, because c_char is just a
2161 one-byte integral type, which languages less laid back than C
2162 will print as ... well, a one-byte integral type. */
2163 struct type
*builtin_true_char
;
2164 struct type
*builtin_true_unsigned_char
;
2166 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
2167 is for when an architecture needs to describe a register that has
2169 struct type
*builtin_int0
;
2170 struct type
*builtin_int8
;
2171 struct type
*builtin_uint8
;
2172 struct type
*builtin_int16
;
2173 struct type
*builtin_uint16
;
2174 struct type
*builtin_int24
;
2175 struct type
*builtin_uint24
;
2176 struct type
*builtin_int32
;
2177 struct type
*builtin_uint32
;
2178 struct type
*builtin_int64
;
2179 struct type
*builtin_uint64
;
2180 struct type
*builtin_int128
;
2181 struct type
*builtin_uint128
;
2183 /* Wide character types. */
2184 struct type
*builtin_char16
;
2185 struct type
*builtin_char32
;
2186 struct type
*builtin_wchar
;
2188 /* Pointer types. */
2190 /* * `pointer to data' type. Some target platforms use an implicitly
2191 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
2192 struct type
*builtin_data_ptr
;
2194 /* * `pointer to function (returning void)' type. Harvard
2195 architectures mean that ABI function and code pointers are not
2196 interconvertible. Similarly, since ANSI, C standards have
2197 explicitly said that pointers to functions and pointers to data
2198 are not interconvertible --- that is, you can't cast a function
2199 pointer to void * and back, and expect to get the same value.
2200 However, all function pointer types are interconvertible, so void
2201 (*) () can server as a generic function pointer. */
2203 struct type
*builtin_func_ptr
;
2205 /* * `function returning pointer to function (returning void)' type.
2206 The final void return type is not significant for it. */
2208 struct type
*builtin_func_func
;
2210 /* Special-purpose types. */
2212 /* * This type is used to represent a GDB internal function. */
2214 struct type
*internal_fn
;
2216 /* * This type is used to represent an xmethod. */
2217 struct type
*xmethod
;
2220 /* * Return the type table for the specified architecture. */
2222 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
2224 /* * Per-objfile types used by symbol readers. */
2228 /* Basic types based on the objfile architecture. */
2229 struct type
*builtin_void
;
2230 struct type
*builtin_char
;
2231 struct type
*builtin_short
;
2232 struct type
*builtin_int
;
2233 struct type
*builtin_long
;
2234 struct type
*builtin_long_long
;
2235 struct type
*builtin_signed_char
;
2236 struct type
*builtin_unsigned_char
;
2237 struct type
*builtin_unsigned_short
;
2238 struct type
*builtin_unsigned_int
;
2239 struct type
*builtin_unsigned_long
;
2240 struct type
*builtin_unsigned_long_long
;
2241 struct type
*builtin_half
;
2242 struct type
*builtin_float
;
2243 struct type
*builtin_double
;
2244 struct type
*builtin_long_double
;
2246 /* * This type is used to represent symbol addresses. */
2247 struct type
*builtin_core_addr
;
2249 /* * This type represents a type that was unrecognized in symbol
2251 struct type
*builtin_error
;
2253 /* * Types used for symbols with no debug information. */
2254 struct type
*nodebug_text_symbol
;
2255 struct type
*nodebug_text_gnu_ifunc_symbol
;
2256 struct type
*nodebug_got_plt_symbol
;
2257 struct type
*nodebug_data_symbol
;
2258 struct type
*nodebug_unknown_symbol
;
2259 struct type
*nodebug_tls_symbol
;
2262 /* * Return the type table for the specified objfile. */
2264 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
2266 /* Explicit floating-point formats. See "floatformat.h". */
2267 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
2268 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
2269 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2270 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2271 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2272 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2273 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2274 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2275 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2276 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2277 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2278 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2279 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2281 /* Allocate space for storing data associated with a particular
2282 type. We ensure that the space is allocated using the same
2283 mechanism that was used to allocate the space for the type
2284 structure itself. I.e. if the type is on an objfile's
2285 objfile_obstack, then the space for data associated with that type
2286 will also be allocated on the objfile_obstack. If the type is
2287 associated with a gdbarch, then the space for data associated with that
2288 type will also be allocated on the gdbarch_obstack.
2290 If a type is not associated with neither an objfile or a gdbarch then
2291 you should not use this macro to allocate space for data, instead you
2292 should call xmalloc directly, and ensure the memory is correctly freed
2293 when it is no longer needed. */
2295 #define TYPE_ALLOC(t,size) \
2296 (obstack_alloc (((t)->is_objfile_owned () \
2297 ? &((t)->objfile_owner ()->objfile_obstack) \
2298 : gdbarch_obstack ((t)->arch_owner ())), \
2302 /* See comment on TYPE_ALLOC. */
2304 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2306 /* Use alloc_type to allocate a type owned by an objfile. Use
2307 alloc_type_arch to allocate a type owned by an architecture. Use
2308 alloc_type_copy to allocate a type with the same owner as a
2309 pre-existing template type, no matter whether objfile or
2311 extern struct type
*alloc_type (struct objfile
*);
2312 extern struct type
*alloc_type_arch (struct gdbarch
*);
2313 extern struct type
*alloc_type_copy (const struct type
*);
2315 /* * This returns the target type (or NULL) of TYPE, also skipping
2318 extern struct type
*get_target_type (struct type
*type
);
2320 /* Return the equivalent of TYPE_LENGTH, but in number of target
2321 addressable memory units of the associated gdbarch instead of bytes. */
2323 extern unsigned int type_length_units (struct type
*type
);
2325 /* * Helper function to construct objfile-owned types. */
2327 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2329 extern struct type
*init_integer_type (struct objfile
*, int, int,
2331 extern struct type
*init_character_type (struct objfile
*, int, int,
2333 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2335 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2336 const struct floatformat
**,
2337 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2338 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2339 extern bool can_create_complex_type (struct type
*);
2340 extern struct type
*init_complex_type (const char *, struct type
*);
2341 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2343 extern struct type
*init_fixed_point_type (struct objfile
*, int, int,
2346 /* Helper functions to construct architecture-owned types. */
2347 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2349 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2351 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2353 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2355 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2356 const struct floatformat
**);
2357 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2358 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2361 /* Helper functions to construct a struct or record type. An
2362 initially empty type is created using arch_composite_type().
2363 Fields are then added using append_composite_type_field*(). A union
2364 type has its size set to the largest field. A struct type has each
2365 field packed against the previous. */
2367 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2368 const char *name
, enum type_code code
);
2369 extern void append_composite_type_field (struct type
*t
, const char *name
,
2370 struct type
*field
);
2371 extern void append_composite_type_field_aligned (struct type
*t
,
2375 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2376 struct type
*field
);
2378 /* Helper functions to construct a bit flags type. An initially empty
2379 type is created using arch_flag_type(). Flags are then added using
2380 append_flag_type_field() and append_flag_type_flag(). */
2381 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2382 const char *name
, int bit
);
2383 extern void append_flags_type_field (struct type
*type
,
2384 int start_bitpos
, int nr_bits
,
2385 struct type
*field_type
, const char *name
);
2386 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2389 extern void make_vector_type (struct type
*array_type
);
2390 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2392 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2393 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2394 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2397 extern struct type
*make_reference_type (struct type
*, struct type
**,
2400 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2402 extern struct type
*make_restrict_type (struct type
*);
2404 extern struct type
*make_unqualified_type (struct type
*);
2406 extern struct type
*make_atomic_type (struct type
*);
2408 extern void replace_type (struct type
*, struct type
*);
2410 extern type_instance_flags address_space_name_to_type_instance_flags
2411 (struct gdbarch
*, const char *);
2413 extern const char *address_space_type_instance_flags_to_name
2414 (struct gdbarch
*, type_instance_flags
);
2416 extern struct type
*make_type_with_address_space
2417 (struct type
*type
, type_instance_flags space_identifier
);
2419 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2421 extern struct type
*lookup_methodptr_type (struct type
*);
2423 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2424 struct type
*to_type
, struct field
*args
,
2425 int nargs
, int varargs
);
2427 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2430 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2432 extern struct type
*allocate_stub_method (struct type
*);
2434 extern const char *type_name_or_error (struct type
*type
);
2438 /* The field of the element, or NULL if no element was found. */
2439 struct field
*field
;
2441 /* The bit offset of the element in the parent structure. */
2445 /* Given a type TYPE, lookup the field and offset of the component named
2448 TYPE can be either a struct or union, or a pointer or reference to
2449 a struct or union. If it is a pointer or reference, its target
2450 type is automatically used. Thus '.' and '->' are interchangable,
2451 as specified for the definitions of the expression element types
2452 STRUCTOP_STRUCT and STRUCTOP_PTR.
2454 If NOERR is nonzero, the returned structure will have field set to
2455 NULL if there is no component named NAME.
2457 If the component NAME is a field in an anonymous substructure of
2458 TYPE, the returned offset is a "global" offset relative to TYPE
2459 rather than an offset within the substructure. */
2461 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2463 /* Given a type TYPE, lookup the type of the component named NAME.
2465 TYPE can be either a struct or union, or a pointer or reference to
2466 a struct or union. If it is a pointer or reference, its target
2467 type is automatically used. Thus '.' and '->' are interchangable,
2468 as specified for the definitions of the expression element types
2469 STRUCTOP_STRUCT and STRUCTOP_PTR.
2471 If NOERR is nonzero, return NULL if there is no component named
2474 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2476 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2478 extern struct type
*lookup_pointer_type (struct type
*);
2480 extern struct type
*make_function_type (struct type
*, struct type
**);
2482 extern struct type
*lookup_function_type (struct type
*);
2484 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2488 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2492 extern struct type
*create_array_type_with_stride
2493 (struct type
*, struct type
*, struct type
*,
2494 struct dynamic_prop
*, unsigned int);
2496 extern struct type
*create_range_type (struct type
*, struct type
*,
2497 const struct dynamic_prop
*,
2498 const struct dynamic_prop
*,
2501 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2502 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2505 extern struct type
* create_range_type_with_stride
2506 (struct type
*result_type
, struct type
*index_type
,
2507 const struct dynamic_prop
*low_bound
,
2508 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2509 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2511 extern struct type
*create_array_type (struct type
*, struct type
*,
2514 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2516 extern struct type
*create_string_type (struct type
*, struct type
*,
2518 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2520 extern struct type
*create_set_type (struct type
*, struct type
*);
2522 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2525 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2528 extern ULONGEST
get_unsigned_type_max (struct type
*);
2530 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2532 extern CORE_ADDR
get_pointer_type_max (struct type
*);
2534 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2535 ADDR specifies the location of the variable the type is bound to.
2536 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2537 static properties is returned. */
2538 extern struct type
*resolve_dynamic_type
2539 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2542 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2543 extern int is_dynamic_type (struct type
*type
);
2545 extern struct type
*check_typedef (struct type
*);
2547 extern void check_stub_method_group (struct type
*, int);
2549 extern char *gdb_mangle_name (struct type
*, int, int);
2551 extern struct type
*lookup_typename (const struct language_defn
*,
2552 const char *, const struct block
*, int);
2554 extern struct type
*lookup_template_type (const char *, struct type
*,
2555 const struct block
*);
2557 extern int get_vptr_fieldno (struct type
*, struct type
**);
2559 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
2562 Return true if the two bounds are available, false otherwise. */
2564 extern bool get_discrete_bounds (struct type
*type
, LONGEST
*lowp
,
2567 /* If TYPE's low bound is a known constant, return it, else return nullopt. */
2569 extern gdb::optional
<LONGEST
> get_discrete_low_bound (struct type
*type
);
2571 /* If TYPE's high bound is a known constant, return it, else return nullopt. */
2573 extern gdb::optional
<LONGEST
> get_discrete_high_bound (struct type
*type
);
2575 /* Assuming TYPE is a simple, non-empty array type, compute its upper
2576 and lower bound. Save the low bound into LOW_BOUND if not NULL.
2577 Save the high bound into HIGH_BOUND if not NULL.
2579 Return true if the operation was successful. Return false otherwise,
2580 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. */
2582 extern bool get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2583 LONGEST
*high_bound
);
2585 extern gdb::optional
<LONGEST
> discrete_position (struct type
*type
,
2588 extern int class_types_same_p (const struct type
*, const struct type
*);
2590 extern int is_ancestor (struct type
*, struct type
*);
2592 extern int is_public_ancestor (struct type
*, struct type
*);
2594 extern int is_unique_ancestor (struct type
*, struct value
*);
2596 /* Overload resolution */
2598 /* * Badness if parameter list length doesn't match arg list length. */
2599 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2601 /* * Dummy badness value for nonexistent parameter positions. */
2602 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2603 /* * Badness if no conversion among types. */
2604 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2606 /* * Badness of an exact match. */
2607 extern const struct rank EXACT_MATCH_BADNESS
;
2609 /* * Badness of integral promotion. */
2610 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2611 /* * Badness of floating promotion. */
2612 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2613 /* * Badness of converting a derived class pointer
2614 to a base class pointer. */
2615 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2616 /* * Badness of integral conversion. */
2617 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2618 /* * Badness of floating conversion. */
2619 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2620 /* * Badness of integer<->floating conversions. */
2621 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2622 /* * Badness of conversion of pointer to void pointer. */
2623 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2624 /* * Badness of conversion to boolean. */
2625 extern const struct rank BOOL_CONVERSION_BADNESS
;
2626 /* * Badness of converting derived to base class. */
2627 extern const struct rank BASE_CONVERSION_BADNESS
;
2628 /* * Badness of converting from non-reference to reference. Subrank
2629 is the type of reference conversion being done. */
2630 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2631 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2632 /* * Conversion to rvalue reference. */
2633 #define REFERENCE_CONVERSION_RVALUE 1
2634 /* * Conversion to const lvalue reference. */
2635 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2637 /* * Badness of converting integer 0 to NULL pointer. */
2638 extern const struct rank NULL_POINTER_CONVERSION
;
2639 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2641 extern const struct rank CV_CONVERSION_BADNESS
;
2642 #define CV_CONVERSION_CONST 1
2643 #define CV_CONVERSION_VOLATILE 2
2645 /* Non-standard conversions allowed by the debugger */
2647 /* * Converting a pointer to an int is usually OK. */
2648 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2650 /* * Badness of converting a (non-zero) integer constant
2652 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2654 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2655 extern int compare_ranks (struct rank a
, struct rank b
);
2657 extern int compare_badness (const badness_vector
&,
2658 const badness_vector
&);
2660 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2661 gdb::array_view
<value
*> args
);
2663 extern struct rank
rank_one_type (struct type
*, struct type
*,
2666 extern void recursive_dump_type (struct type
*, int);
2668 extern int field_is_static (struct field
*);
2672 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2673 const struct value_print_options
*,
2674 int, struct ui_file
*);
2676 extern int can_dereference (struct type
*);
2678 extern int is_integral_type (struct type
*);
2680 extern int is_floating_type (struct type
*);
2682 extern int is_scalar_type (struct type
*type
);
2684 extern int is_scalar_type_recursive (struct type
*);
2686 extern int class_or_union_p (const struct type
*);
2688 extern void maintenance_print_type (const char *, int);
2690 extern htab_up
create_copied_types_hash (struct objfile
*objfile
);
2692 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2694 htab_t copied_types
);
2696 extern struct type
*copy_type (const struct type
*type
);
2698 extern bool types_equal (struct type
*, struct type
*);
2700 extern bool types_deeply_equal (struct type
*, struct type
*);
2702 extern int type_not_allocated (const struct type
*type
);
2704 extern int type_not_associated (const struct type
*type
);
2706 /* Return True if TYPE is a TYPE_CODE_FIXED_POINT or if TYPE is
2707 a range type whose base type is a TYPE_CODE_FIXED_POINT. */
2708 extern bool is_fixed_point_type (struct type
*type
);
2710 /* Allocate a fixed-point type info for TYPE. This should only be
2711 called by INIT_FIXED_POINT_SPECIFIC. */
2712 extern void allocate_fixed_point_type_info (struct type
*type
);
2714 /* * When the type includes explicit byte ordering, return that.
2715 Otherwise, the byte ordering from gdbarch_byte_order for
2716 the type's arch is returned. */
2718 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2720 /* A flag to enable printing of debugging information of C++
2723 extern unsigned int overload_debug
;
2725 #endif /* GDBTYPES_H */