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 /* * True if this type was declared using the "class" keyword. This is
224 only valid for C++ structure and enum types. If false, a structure
225 was declared as a "struct"; if true it was declared "class". For
226 enum types, this is true when "enum class" or "enum struct" was
227 used to declare the type.. */
229 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
231 /* * True if this type is a "flag" enum. A flag enum is one where all
232 the values are pairwise disjoint when "and"ed together. This
233 affects how enum values are printed. */
235 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
237 /* * Constant type. If this is set, the corresponding type has a
240 #define TYPE_CONST(t) ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_CONST) != 0)
242 /* * Volatile type. If this is set, the corresponding type has a
243 volatile modifier. */
245 #define TYPE_VOLATILE(t) \
246 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
248 /* * Restrict type. If this is set, the corresponding type has a
249 restrict modifier. */
251 #define TYPE_RESTRICT(t) \
252 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
254 /* * Atomic type. If this is set, the corresponding type has an
257 #define TYPE_ATOMIC(t) \
258 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
260 /* * True if this type represents either an lvalue or lvalue reference type. */
262 #define TYPE_IS_REFERENCE(t) \
263 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
265 /* * True if this type is allocatable. */
266 #define TYPE_IS_ALLOCATABLE(t) \
267 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
269 /* * True if this type has variant parts. */
270 #define TYPE_HAS_VARIANT_PARTS(t) \
271 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
273 /* * True if this type has a dynamic length. */
274 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
275 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
277 /* * Instruction-space delimited type. This is for Harvard architectures
278 which have separate instruction and data address spaces (and perhaps
281 GDB usually defines a flat address space that is a superset of the
282 architecture's two (or more) address spaces, but this is an extension
283 of the architecture's model.
285 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
286 resides in instruction memory, even if its address (in the extended
287 flat address space) does not reflect this.
289 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
290 corresponding type resides in the data memory space, even if
291 this is not indicated by its (flat address space) address.
293 If neither flag is set, the default space for functions / methods
294 is instruction space, and for data objects is data memory. */
296 #define TYPE_CODE_SPACE(t) \
297 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
299 #define TYPE_DATA_SPACE(t) \
300 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
302 /* * Address class flags. Some environments provide for pointers
303 whose size is different from that of a normal pointer or address
304 types where the bits are interpreted differently than normal
305 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
306 target specific ways to represent these different types of address
309 #define TYPE_ADDRESS_CLASS_1(t) (((t)->instance_flags ()) \
310 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
311 #define TYPE_ADDRESS_CLASS_2(t) (((t)->instance_flags ()) \
312 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
313 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
314 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
315 #define TYPE_ADDRESS_CLASS_ALL(t) (((t)->instance_flags ()) \
316 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
318 /* * Information about a single discriminant. */
320 struct discriminant_range
322 /* * The range of values for the variant. This is an inclusive
326 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
327 is true if this should be an unsigned comparison; false for
329 bool contains (ULONGEST value
, bool is_unsigned
) const
332 return value
>= low
&& value
<= high
;
333 LONGEST valuel
= (LONGEST
) value
;
334 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
340 /* * A single variant. A variant has a list of discriminant values.
341 When the discriminator matches one of these, the variant is
342 enabled. Each variant controls zero or more fields; and may also
343 control other variant parts as well. This struct corresponds to
344 DW_TAG_variant in DWARF. */
346 struct variant
: allocate_on_obstack
348 /* * The discriminant ranges for this variant. */
349 gdb::array_view
<discriminant_range
> discriminants
;
351 /* * The fields controlled by this variant. This is inclusive on
352 the low end and exclusive on the high end. A variant may not
353 control any fields, in which case the two values will be equal.
354 These are indexes into the type's array of fields. */
358 /* * Variant parts controlled by this variant. */
359 gdb::array_view
<variant_part
> parts
;
361 /* * Return true if this is the default variant. The default
362 variant can be recognized because it has no associated
364 bool is_default () const
366 return discriminants
.empty ();
369 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
370 if this should be an unsigned comparison; false for signed. */
371 bool matches (ULONGEST value
, bool is_unsigned
) const;
374 /* * A variant part. Each variant part has an optional discriminant
375 and holds an array of variants. This struct corresponds to
376 DW_TAG_variant_part in DWARF. */
378 struct variant_part
: allocate_on_obstack
380 /* * The index of the discriminant field in the outer type. This is
381 an index into the type's array of fields. If this is -1, there
382 is no discriminant, and only the default variant can be
383 considered to be selected. */
384 int discriminant_index
;
386 /* * True if this discriminant is unsigned; false if signed. This
387 comes from the type of the discriminant. */
390 /* * The variants that are controlled by this variant part. Note
391 that these will always be sorted by field number. */
392 gdb::array_view
<variant
> variants
;
396 enum dynamic_prop_kind
398 PROP_UNDEFINED
, /* Not defined. */
399 PROP_CONST
, /* Constant. */
400 PROP_ADDR_OFFSET
, /* Address offset. */
401 PROP_LOCEXPR
, /* Location expression. */
402 PROP_LOCLIST
, /* Location list. */
403 PROP_VARIANT_PARTS
, /* Variant parts. */
404 PROP_TYPE
, /* Type. */
407 union dynamic_prop_data
409 /* Storage for constant property. */
413 /* Storage for dynamic property. */
417 /* Storage of variant parts for a type. A type with variant parts
418 has all its fields "linearized" -- stored in a single field
419 array, just as if they had all been declared that way. The
420 variant parts are attached via a dynamic property, and then are
421 used to control which fields end up in the final type during
422 dynamic type resolution. */
424 const gdb::array_view
<variant_part
> *variant_parts
;
426 /* Once a variant type is resolved, we may want to be able to go
427 from the resolved type to the original type. In this case we
428 rewrite the property's kind and set this field. */
430 struct type
*original_type
;
433 /* * Used to store a dynamic property. */
437 dynamic_prop_kind
kind () const
442 void set_undefined ()
444 m_kind
= PROP_UNDEFINED
;
447 LONGEST
const_val () const
449 gdb_assert (m_kind
== PROP_CONST
);
451 return m_data
.const_val
;
454 void set_const_val (LONGEST const_val
)
457 m_data
.const_val
= const_val
;
462 gdb_assert (m_kind
== PROP_LOCEXPR
463 || m_kind
== PROP_LOCLIST
464 || m_kind
== PROP_ADDR_OFFSET
);
469 void set_locexpr (void *baton
)
471 m_kind
= PROP_LOCEXPR
;
472 m_data
.baton
= baton
;
475 void set_loclist (void *baton
)
477 m_kind
= PROP_LOCLIST
;
478 m_data
.baton
= baton
;
481 void set_addr_offset (void *baton
)
483 m_kind
= PROP_ADDR_OFFSET
;
484 m_data
.baton
= baton
;
487 const gdb::array_view
<variant_part
> *variant_parts () const
489 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
491 return m_data
.variant_parts
;
494 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
496 m_kind
= PROP_VARIANT_PARTS
;
497 m_data
.variant_parts
= variant_parts
;
500 struct type
*original_type () const
502 gdb_assert (m_kind
== PROP_TYPE
);
504 return m_data
.original_type
;
507 void set_original_type (struct type
*original_type
)
510 m_data
.original_type
= original_type
;
513 /* Determine which field of the union dynamic_prop.data is used. */
514 enum dynamic_prop_kind m_kind
;
516 /* Storage for dynamic or static value. */
517 union dynamic_prop_data m_data
;
520 /* Compare two dynamic_prop objects for equality. dynamic_prop
521 instances are equal iff they have the same type and storage. */
522 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
524 /* Compare two dynamic_prop objects for inequality. */
525 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
530 /* * Define a type's dynamic property node kind. */
531 enum dynamic_prop_node_kind
533 /* A property providing a type's data location.
534 Evaluating this field yields to the location of an object's data. */
535 DYN_PROP_DATA_LOCATION
,
537 /* A property representing DW_AT_allocated. The presence of this attribute
538 indicates that the object of the type can be allocated/deallocated. */
541 /* A property representing DW_AT_associated. The presence of this attribute
542 indicated that the object of the type can be associated. */
545 /* A property providing an array's byte stride. */
546 DYN_PROP_BYTE_STRIDE
,
548 /* A property holding variant parts. */
549 DYN_PROP_VARIANT_PARTS
,
551 /* A property holding the size of the type. */
555 /* * List for dynamic type attributes. */
556 struct dynamic_prop_list
558 /* The kind of dynamic prop in this node. */
559 enum dynamic_prop_node_kind prop_kind
;
561 /* The dynamic property itself. */
562 struct dynamic_prop prop
;
564 /* A pointer to the next dynamic property. */
565 struct dynamic_prop_list
*next
;
568 /* * Determine which field of the union main_type.fields[x].loc is
573 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
574 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
575 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
576 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
577 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
580 /* * A discriminant to determine which field in the
581 main_type.type_specific union is being used, if any.
583 For types such as TYPE_CODE_FLT, the use of this
584 discriminant is really redundant, as we know from the type code
585 which field is going to be used. As such, it would be possible to
586 reduce the size of this enum in order to save a bit or two for
587 other fields of struct main_type. But, since we still have extra
588 room , and for the sake of clarity and consistency, we treat all fields
589 of the union the same way. */
591 enum type_specific_kind
594 TYPE_SPECIFIC_CPLUS_STUFF
,
595 TYPE_SPECIFIC_GNAT_STUFF
,
596 TYPE_SPECIFIC_FLOATFORMAT
,
597 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
599 TYPE_SPECIFIC_SELF_TYPE
,
601 TYPE_SPECIFIC_FIXED_POINT
,
606 struct objfile
*objfile
;
607 struct gdbarch
*gdbarch
;
612 /* * Position of this field, counting in bits from start of
613 containing structure. For big-endian targets, it is the bit
614 offset to the MSB. For little-endian targets, it is the bit
615 offset to the LSB. */
622 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
623 physaddr is the location (in the target) of the static
624 field. Otherwise, physname is the mangled label of the
628 const char *physname
;
630 /* * The field location can be computed by evaluating the
631 following DWARF block. Its DATA is allocated on
632 objfile_obstack - no CU load is needed to access it. */
634 struct dwarf2_locexpr_baton
*dwarf_block
;
639 struct type
*type () const
644 void set_type (struct type
*type
)
649 union field_location loc
;
651 /* * For a function or member type, this is 1 if the argument is
652 marked artificial. Artificial arguments should not be shown
653 to the user. For TYPE_CODE_RANGE it is set if the specific
654 bound is not defined. */
656 unsigned int artificial
: 1;
658 /* * Discriminant for union field_location. */
660 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
662 /* * Size of this field, in bits, or zero if not packed.
663 If non-zero in an array type, indicates the element size in
664 bits (used only in Ada at the moment).
665 For an unpacked field, the field's type's length
666 says how many bytes the field occupies. */
668 unsigned int bitsize
: 28;
670 /* * In a struct or union type, type of this field.
671 - In a function or member type, type of this argument.
672 - In an array type, the domain-type of the array. */
676 /* * Name of field, value or argument.
677 NULL for range bounds, array domains, and member function
685 ULONGEST
bit_stride () const
687 if (this->flag_is_byte_stride
)
688 return this->stride
.const_val () * 8;
690 return this->stride
.const_val ();
693 /* * Low bound of range. */
695 struct dynamic_prop low
;
697 /* * High bound of range. */
699 struct dynamic_prop high
;
701 /* The stride value for this range. This can be stored in bits or bytes
702 based on the value of BYTE_STRIDE_P. It is optional to have a stride
703 value, if this range has no stride value defined then this will be set
704 to the constant zero. */
706 struct dynamic_prop stride
;
708 /* * The bias. Sometimes a range value is biased before storage.
709 The bias is added to the stored bits to form the true value. */
713 /* True if HIGH range bound contains the number of elements in the
714 subrange. This affects how the final high bound is computed. */
716 unsigned int flag_upper_bound_is_count
: 1;
718 /* True if LOW or/and HIGH are resolved into a static bound from
721 unsigned int flag_bound_evaluated
: 1;
723 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
725 unsigned int flag_is_byte_stride
: 1;
728 /* Compare two range_bounds objects for equality. Simply does
729 memberwise comparison. */
730 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
732 /* Compare two range_bounds objects for inequality. */
733 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
740 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
741 point to cplus_struct_default, a default static instance of a
742 struct cplus_struct_type. */
744 struct cplus_struct_type
*cplus_stuff
;
746 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
747 provides additional information. */
749 struct gnat_aux_type
*gnat_stuff
;
751 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
752 floatformat object that describes the floating-point value
753 that resides within the type. */
755 const struct floatformat
*floatformat
;
757 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
759 struct func_type
*func_stuff
;
761 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
762 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
765 struct type
*self_type
;
767 /* * For TYPE_CODE_FIXED_POINT types, the info necessary to decode
768 values of that type. */
769 struct fixed_point_type_info
*fixed_point_info
;
771 /* * An integer-like scalar type may be stored in just part of its
772 enclosing storage bytes. This structure describes this
776 /* * The bit size of the integer. This can be 0. For integers
777 that fill their storage (the ordinary case), this field holds
778 the byte size times 8. */
779 unsigned short bit_size
;
780 /* * The bit offset of the integer. This is ordinarily 0, and can
781 only be non-zero if the bit size is less than the storage
783 unsigned short bit_offset
;
787 /* * Main structure representing a type in GDB.
789 This structure is space-critical. Its layout has been tweaked to
790 reduce the space used. */
794 /* * Code for kind of type. */
796 ENUM_BITFIELD(type_code
) code
: 8;
798 /* * Flags about this type. These fields appear at this location
799 because they packs nicely here. See the TYPE_* macros for
800 documentation about these fields. */
802 unsigned int m_flag_unsigned
: 1;
803 unsigned int m_flag_nosign
: 1;
804 unsigned int m_flag_stub
: 1;
805 unsigned int m_flag_target_stub
: 1;
806 unsigned int m_flag_prototyped
: 1;
807 unsigned int m_flag_varargs
: 1;
808 unsigned int m_flag_vector
: 1;
809 unsigned int m_flag_stub_supported
: 1;
810 unsigned int m_flag_gnu_ifunc
: 1;
811 unsigned int m_flag_fixed_instance
: 1;
812 unsigned int m_flag_objfile_owned
: 1;
813 unsigned int m_flag_endianity_not_default
: 1;
815 /* * True if this type was declared with "class" rather than
818 unsigned int flag_declared_class
: 1;
820 /* * True if this is an enum type with disjoint values. This
821 affects how the enum is printed. */
823 unsigned int flag_flag_enum
: 1;
825 /* * A discriminant telling us which field of the type_specific
826 union is being used for this type, if any. */
828 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
830 /* * Number of fields described for this type. This field appears
831 at this location because it packs nicely here. */
835 /* * Name of this type, or NULL if none.
837 This is used for printing only. For looking up a name, look for
838 a symbol in the VAR_DOMAIN. This is generally allocated in the
839 objfile's obstack. However coffread.c uses malloc. */
843 /* * Every type is now associated with a particular objfile, and the
844 type is allocated on the objfile_obstack for that objfile. One
845 problem however, is that there are times when gdb allocates new
846 types while it is not in the process of reading symbols from a
847 particular objfile. Fortunately, these happen when the type
848 being created is a derived type of an existing type, such as in
849 lookup_pointer_type(). So we can just allocate the new type
850 using the same objfile as the existing type, but to do this we
851 need a backpointer to the objfile from the existing type. Yes
852 this is somewhat ugly, but without major overhaul of the internal
853 type system, it can't be avoided for now. */
855 union type_owner m_owner
;
857 /* * For a pointer type, describes the type of object pointed to.
858 - For an array type, describes the type of the elements.
859 - For a function or method type, describes the type of the return value.
860 - For a range type, describes the type of the full range.
861 - For a complex type, describes the type of each coordinate.
862 - For a special record or union type encoding a dynamic-sized type
863 in GNAT, a memoized pointer to a corresponding static version of
865 - Unused otherwise. */
867 struct type
*target_type
;
869 /* * For structure and union types, a description of each field.
870 For set and pascal array types, there is one "field",
871 whose type is the domain type of the set or array.
872 For range types, there are two "fields",
873 the minimum and maximum values (both inclusive).
874 For enum types, each possible value is described by one "field".
875 For a function or method type, a "field" for each parameter.
876 For C++ classes, there is one field for each base class (if it is
877 a derived class) plus one field for each class data member. Member
878 functions are recorded elsewhere.
880 Using a pointer to a separate array of fields
881 allows all types to have the same size, which is useful
882 because we can allocate the space for a type before
883 we know what to put in it. */
887 struct field
*fields
;
889 /* * Union member used for range types. */
891 struct range_bounds
*bounds
;
893 /* If this is a scalar type, then this is its corresponding
895 struct type
*complex_type
;
899 /* * Slot to point to additional language-specific fields of this
902 union type_specific type_specific
;
904 /* * Contains all dynamic type properties. */
905 struct dynamic_prop_list
*dyn_prop_list
;
908 /* * Number of bits allocated for alignment. */
910 #define TYPE_ALIGN_BITS 8
912 /* * A ``struct type'' describes a particular instance of a type, with
913 some particular qualification. */
917 /* Get the type code of this type.
919 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
920 type, you need to do `check_typedef (type)->code ()`. */
921 type_code
code () const
923 return this->main_type
->code
;
926 /* Set the type code of this type. */
927 void set_code (type_code code
)
929 this->main_type
->code
= code
;
932 /* Get the name of this type. */
933 const char *name () const
935 return this->main_type
->name
;
938 /* Set the name of this type. */
939 void set_name (const char *name
)
941 this->main_type
->name
= name
;
944 /* Get the number of fields of this type. */
945 int num_fields () const
947 return this->main_type
->nfields
;
950 /* Set the number of fields of this type. */
951 void set_num_fields (int num_fields
)
953 this->main_type
->nfields
= num_fields
;
956 /* Get the fields array of this type. */
957 struct field
*fields () const
959 return this->main_type
->flds_bnds
.fields
;
962 /* Get the field at index IDX. */
963 struct field
&field (int idx
) const
965 return this->fields ()[idx
];
968 /* Set the fields array of this type. */
969 void set_fields (struct field
*fields
)
971 this->main_type
->flds_bnds
.fields
= fields
;
974 type
*index_type () const
976 return this->field (0).type ();
979 void set_index_type (type
*index_type
)
981 this->field (0).set_type (index_type
);
984 /* Return the instance flags converted to the correct type. */
985 const type_instance_flags
instance_flags () const
987 return (enum type_instance_flag_value
) this->m_instance_flags
;
990 /* Set the instance flags. */
991 void set_instance_flags (type_instance_flags flags
)
993 this->m_instance_flags
= flags
;
996 /* Get the bounds bounds of this type. The type must be a range type. */
997 range_bounds
*bounds () const
999 switch (this->code ())
1001 case TYPE_CODE_RANGE
:
1002 return this->main_type
->flds_bnds
.bounds
;
1004 case TYPE_CODE_ARRAY
:
1005 case TYPE_CODE_STRING
:
1006 return this->index_type ()->bounds ();
1009 gdb_assert_not_reached
1010 ("type::bounds called on type with invalid code");
1014 /* Set the bounds of this type. The type must be a range type. */
1015 void set_bounds (range_bounds
*bounds
)
1017 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1019 this->main_type
->flds_bnds
.bounds
= bounds
;
1022 ULONGEST
bit_stride () const
1024 return this->bounds ()->bit_stride ();
1027 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1028 the type is signed (unless TYPE_NOSIGN is set). */
1030 bool is_unsigned () const
1032 return this->main_type
->m_flag_unsigned
;
1035 void set_is_unsigned (bool is_unsigned
)
1037 this->main_type
->m_flag_unsigned
= is_unsigned
;
1040 /* No sign for this type. In C++, "char", "signed char", and
1041 "unsigned char" are distinct types; so we need an extra flag to
1042 indicate the absence of a sign! */
1044 bool has_no_signedness () const
1046 return this->main_type
->m_flag_nosign
;
1049 void set_has_no_signedness (bool has_no_signedness
)
1051 this->main_type
->m_flag_nosign
= has_no_signedness
;
1054 /* This appears in a type's flags word if it is a stub type (e.g.,
1055 if someone referenced a type that wasn't defined in a source file
1056 via (struct sir_not_appearing_in_this_film *)). */
1058 bool is_stub () const
1060 return this->main_type
->m_flag_stub
;
1063 void set_is_stub (bool is_stub
)
1065 this->main_type
->m_flag_stub
= is_stub
;
1068 /* The target type of this type is a stub type, and this type needs
1069 to be updated if it gets un-stubbed in check_typedef. Used for
1070 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
1071 based on the TYPE_LENGTH of the target type. Also, set for
1072 TYPE_CODE_TYPEDEF. */
1074 bool target_is_stub () const
1076 return this->main_type
->m_flag_target_stub
;
1079 void set_target_is_stub (bool target_is_stub
)
1081 this->main_type
->m_flag_target_stub
= target_is_stub
;
1084 /* This is a function type which appears to have a prototype. We
1085 need this for function calls in order to tell us if it's necessary
1086 to coerce the args, or to just do the standard conversions. This
1087 is used with a short field. */
1089 bool is_prototyped () const
1091 return this->main_type
->m_flag_prototyped
;
1094 void set_is_prototyped (bool is_prototyped
)
1096 this->main_type
->m_flag_prototyped
= is_prototyped
;
1099 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
1102 bool has_varargs () const
1104 return this->main_type
->m_flag_varargs
;
1107 void set_has_varargs (bool has_varargs
)
1109 this->main_type
->m_flag_varargs
= has_varargs
;
1112 /* Identify a vector type. Gcc is handling this by adding an extra
1113 attribute to the array type. We slurp that in as a new flag of a
1114 type. This is used only in dwarf2read.c. */
1116 bool is_vector () const
1118 return this->main_type
->m_flag_vector
;
1121 void set_is_vector (bool is_vector
)
1123 this->main_type
->m_flag_vector
= is_vector
;
1126 /* This debug target supports TYPE_STUB(t). In the unsupported case
1127 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
1128 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
1129 guessed the TYPE_STUB(t) value (see dwarfread.c). */
1131 bool stub_is_supported () const
1133 return this->main_type
->m_flag_stub_supported
;
1136 void set_stub_is_supported (bool stub_is_supported
)
1138 this->main_type
->m_flag_stub_supported
= stub_is_supported
;
1141 /* Used only for TYPE_CODE_FUNC where it specifies the real function
1142 address is returned by this function call. TYPE_TARGET_TYPE
1143 determines the final returned function type to be presented to
1146 bool is_gnu_ifunc () const
1148 return this->main_type
->m_flag_gnu_ifunc
;
1151 void set_is_gnu_ifunc (bool is_gnu_ifunc
)
1153 this->main_type
->m_flag_gnu_ifunc
= is_gnu_ifunc
;
1156 /* The debugging formats (especially STABS) do not contain enough
1157 information to represent all Ada types---especially those whose
1158 size depends on dynamic quantities. Therefore, the GNAT Ada
1159 compiler includes extra information in the form of additional type
1160 definitions connected by naming conventions. This flag indicates
1161 that the type is an ordinary (unencoded) GDB type that has been
1162 created from the necessary run-time information, and does not need
1163 further interpretation. Optionally marks ordinary, fixed-size GDB
1166 bool is_fixed_instance () const
1168 return this->main_type
->m_flag_fixed_instance
;
1171 void set_is_fixed_instance (bool is_fixed_instance
)
1173 this->main_type
->m_flag_fixed_instance
= is_fixed_instance
;
1176 /* A compiler may supply dwarf instrumentation that indicates the desired
1177 endian interpretation of the variable differs from the native endian
1180 bool endianity_is_not_default () const
1182 return this->main_type
->m_flag_endianity_not_default
;
1185 void set_endianity_is_not_default (bool endianity_is_not_default
)
1187 this->main_type
->m_flag_endianity_not_default
= endianity_is_not_default
;
1190 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return a reference
1191 to this type's fixed_point_info. */
1193 struct fixed_point_type_info
&fixed_point_info () const
1195 gdb_assert (this->code () == TYPE_CODE_FIXED_POINT
);
1196 gdb_assert (this->main_type
->type_specific
.fixed_point_info
!= nullptr);
1198 return *this->main_type
->type_specific
.fixed_point_info
;
1201 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, set this type's
1202 fixed_point_info to INFO. */
1204 void set_fixed_point_info (struct fixed_point_type_info
*info
) const
1206 gdb_assert (this->code () == TYPE_CODE_FIXED_POINT
);
1208 this->main_type
->type_specific
.fixed_point_info
= info
;
1211 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return its base type.
1213 In other words, this returns the type after having peeled all
1214 intermediate type layers (such as TYPE_CODE_RANGE, for instance).
1215 The TYPE_CODE of the type returned is guaranteed to be
1216 a TYPE_CODE_FIXED_POINT. */
1218 struct type
*fixed_point_type_base_type ();
1220 /* * Assuming that THIS is a TYPE_CODE_FIXED_POINT, return its scaling
1223 const gdb_mpq
&fixed_point_scaling_factor ();
1225 /* * Return the dynamic property of the requested KIND from this type's
1226 list of dynamic properties. */
1227 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1229 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1230 property to this type.
1232 This function assumes that this type is objfile-owned. */
1233 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1235 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1236 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1238 /* Return true if this type is owned by an objfile. Return false if it is
1239 owned by an architecture. */
1240 bool is_objfile_owned () const
1242 return this->main_type
->m_flag_objfile_owned
;
1245 /* Set the owner of the type to be OBJFILE. */
1246 void set_owner (objfile
*objfile
)
1248 this->main_type
->m_owner
.objfile
= objfile
;
1249 this->main_type
->m_flag_objfile_owned
= true;
1252 /* Set the owner of the type to be ARCH. */
1253 void set_owner (gdbarch
*arch
)
1255 this->main_type
->m_owner
.gdbarch
= arch
;
1256 this->main_type
->m_flag_objfile_owned
= false;
1259 /* Return the objfile owner of this type.
1261 Return nullptr if this type is not objfile-owned. */
1262 struct objfile
*objfile () const
1264 if (!this->is_objfile_owned ())
1267 return this->main_type
->m_owner
.objfile
;
1270 /* Return the gdbarch owner of this type.
1272 Return nullptr if this type is not gdbarch-owned. */
1273 gdbarch
*arch () const
1275 if (this->is_objfile_owned ())
1278 return this->main_type
->m_owner
.gdbarch
;
1281 /* * Return true if this is an integer type whose logical (bit) size
1282 differs from its storage size; false otherwise. Always return
1283 false for non-integer (i.e., non-TYPE_SPECIFIC_INT) types. */
1284 bool bit_size_differs_p () const
1286 return (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
1287 && main_type
->type_specific
.int_stuff
.bit_size
!= 8 * length
);
1290 /* * Return the logical (bit) size for this integer type. Only
1291 valid for integer (TYPE_SPECIFIC_INT) types. */
1292 unsigned short bit_size () const
1294 gdb_assert (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
);
1295 return main_type
->type_specific
.int_stuff
.bit_size
;
1298 /* * Return the bit offset for this integer type. Only valid for
1299 integer (TYPE_SPECIFIC_INT) types. */
1300 unsigned short bit_offset () const
1302 gdb_assert (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
);
1303 return main_type
->type_specific
.int_stuff
.bit_offset
;
1306 /* * Type that is a pointer to this type.
1307 NULL if no such pointer-to type is known yet.
1308 The debugger may add the address of such a type
1309 if it has to construct one later. */
1311 struct type
*pointer_type
;
1313 /* * C++: also need a reference type. */
1315 struct type
*reference_type
;
1317 /* * A C++ rvalue reference type added in C++11. */
1319 struct type
*rvalue_reference_type
;
1321 /* * Variant chain. This points to a type that differs from this
1322 one only in qualifiers and length. Currently, the possible
1323 qualifiers are const, volatile, code-space, data-space, and
1324 address class. The length may differ only when one of the
1325 address class flags are set. The variants are linked in a
1326 circular ring and share MAIN_TYPE. */
1330 /* * The alignment for this type. Zero means that the alignment was
1331 not specified in the debug info. Note that this is stored in a
1332 funny way: as the log base 2 (plus 1) of the alignment; so a
1333 value of 1 means the alignment is 1, and a value of 9 means the
1334 alignment is 256. */
1336 unsigned align_log2
: TYPE_ALIGN_BITS
;
1338 /* * Flags specific to this instance of the type, indicating where
1341 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1342 binary or-ed with the target type, with a special case for
1343 address class and space class. For example if this typedef does
1344 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1345 instance flags are completely inherited from the target type. No
1346 qualifiers can be cleared by the typedef. See also
1348 unsigned m_instance_flags
: 9;
1350 /* * Length of storage for a value of this type. The value is the
1351 expression in host bytes of what sizeof(type) would return. This
1352 size includes padding. For example, an i386 extended-precision
1353 floating point value really only occupies ten bytes, but most
1354 ABI's declare its size to be 12 bytes, to preserve alignment.
1355 A `struct type' representing such a floating-point type would
1356 have a `length' value of 12, even though the last two bytes are
1359 Since this field is expressed in host bytes, its value is appropriate
1360 to pass to memcpy and such (it is assumed that GDB itself always runs
1361 on an 8-bits addressable architecture). However, when using it for
1362 target address arithmetic (e.g. adding it to a target address), the
1363 type_length_units function should be used in order to get the length
1364 expressed in target addressable memory units. */
1368 /* * Core type, shared by a group of qualified types. */
1370 struct main_type
*main_type
;
1376 /* * The overloaded name.
1377 This is generally allocated in the objfile's obstack.
1378 However stabsread.c sometimes uses malloc. */
1382 /* * The number of methods with this name. */
1386 /* * The list of methods. */
1388 struct fn_field
*fn_fields
;
1395 /* * If is_stub is clear, this is the mangled name which we can look
1396 up to find the address of the method (FIXME: it would be cleaner
1397 to have a pointer to the struct symbol here instead).
1399 If is_stub is set, this is the portion of the mangled name which
1400 specifies the arguments. For example, "ii", if there are two int
1401 arguments, or "" if there are no arguments. See gdb_mangle_name
1402 for the conversion from this format to the one used if is_stub is
1405 const char *physname
;
1407 /* * The function type for the method.
1409 (This comment used to say "The return value of the method", but
1410 that's wrong. The function type is expected here, i.e. something
1411 with TYPE_CODE_METHOD, and *not* the return-value type). */
1415 /* * For virtual functions. First baseclass that defines this
1416 virtual function. */
1418 struct type
*fcontext
;
1422 unsigned int is_const
:1;
1423 unsigned int is_volatile
:1;
1424 unsigned int is_private
:1;
1425 unsigned int is_protected
:1;
1426 unsigned int is_artificial
:1;
1428 /* * A stub method only has some fields valid (but they are enough
1429 to reconstruct the rest of the fields). */
1431 unsigned int is_stub
:1;
1433 /* * True if this function is a constructor, false otherwise. */
1435 unsigned int is_constructor
: 1;
1437 /* * True if this function is deleted, false otherwise. */
1439 unsigned int is_deleted
: 1;
1441 /* * DW_AT_defaulted attribute for this function. The value is one
1442 of the DW_DEFAULTED constants. */
1444 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1448 unsigned int dummy
:6;
1450 /* * Index into that baseclass's virtual function table, minus 2;
1451 else if static: VOFFSET_STATIC; else: 0. */
1453 unsigned int voffset
:16;
1455 #define VOFFSET_STATIC 1
1461 /* * Unqualified name to be prefixed by owning class qualified
1466 /* * Type this typedef named NAME represents. */
1470 /* * True if this field was declared protected, false otherwise. */
1471 unsigned int is_protected
: 1;
1473 /* * True if this field was declared private, false otherwise. */
1474 unsigned int is_private
: 1;
1477 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1478 TYPE_CODE_UNION nodes. */
1480 struct cplus_struct_type
1482 /* * Number of base classes this type derives from. The
1483 baseclasses are stored in the first N_BASECLASSES fields
1484 (i.e. the `fields' field of the struct type). The only fields
1485 of struct field that are used are: type, name, loc.bitpos. */
1487 short n_baseclasses
;
1489 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1490 All access to this field must be through TYPE_VPTR_FIELDNO as one
1491 thing it does is check whether the field has been initialized.
1492 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1493 which for portability reasons doesn't initialize this field.
1494 TYPE_VPTR_FIELDNO returns -1 for this case.
1496 If -1, we were unable to find the virtual function table pointer in
1497 initial symbol reading, and get_vptr_fieldno should be called to find
1498 it if possible. get_vptr_fieldno will update this field if possible.
1499 Otherwise the value is left at -1.
1501 Unused if this type does not have virtual functions. */
1505 /* * Number of methods with unique names. All overloaded methods
1506 with the same name count only once. */
1510 /* * Number of template arguments. */
1512 unsigned short n_template_arguments
;
1514 /* * One if this struct is a dynamic class, as defined by the
1515 Itanium C++ ABI: if it requires a virtual table pointer,
1516 because it or any of its base classes have one or more virtual
1517 member functions or virtual base classes. Minus one if not
1518 dynamic. Zero if not yet computed. */
1522 /* * The calling convention for this type, fetched from the
1523 DW_AT_calling_convention attribute. The value is one of the
1526 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1528 /* * The base class which defined the virtual function table pointer. */
1530 struct type
*vptr_basetype
;
1532 /* * For derived classes, the number of base classes is given by
1533 n_baseclasses and virtual_field_bits is a bit vector containing
1534 one bit per base class. If the base class is virtual, the
1535 corresponding bit will be set.
1540 class C : public B, public virtual A {};
1542 B is a baseclass of C; A is a virtual baseclass for C.
1543 This is a C++ 2.0 language feature. */
1545 B_TYPE
*virtual_field_bits
;
1547 /* * For classes with private fields, the number of fields is
1548 given by nfields and private_field_bits is a bit vector
1549 containing one bit per field.
1551 If the field is private, the corresponding bit will be set. */
1553 B_TYPE
*private_field_bits
;
1555 /* * For classes with protected fields, the number of fields is
1556 given by nfields and protected_field_bits is a bit vector
1557 containing one bit per field.
1559 If the field is private, the corresponding bit will be set. */
1561 B_TYPE
*protected_field_bits
;
1563 /* * For classes with fields to be ignored, either this is
1564 optimized out or this field has length 0. */
1566 B_TYPE
*ignore_field_bits
;
1568 /* * For classes, structures, and unions, a description of each
1569 field, which consists of an overloaded name, followed by the
1570 types of arguments that the method expects, and then the name
1571 after it has been renamed to make it distinct.
1573 fn_fieldlists points to an array of nfn_fields of these. */
1575 struct fn_fieldlist
*fn_fieldlists
;
1577 /* * typedefs defined inside this class. typedef_field points to
1578 an array of typedef_field_count elements. */
1580 struct decl_field
*typedef_field
;
1582 unsigned typedef_field_count
;
1584 /* * The nested types defined by this type. nested_types points to
1585 an array of nested_types_count elements. */
1587 struct decl_field
*nested_types
;
1589 unsigned nested_types_count
;
1591 /* * The template arguments. This is an array with
1592 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1595 struct symbol
**template_arguments
;
1598 /* * Struct used to store conversion rankings. */
1604 /* * When two conversions are of the same type and therefore have
1605 the same rank, subrank is used to differentiate the two.
1607 Eg: Two derived-class-pointer to base-class-pointer conversions
1608 would both have base pointer conversion rank, but the
1609 conversion with the shorter distance to the ancestor is
1610 preferable. 'subrank' would be used to reflect that. */
1615 /* * Used for ranking a function for overload resolution. */
1617 typedef std::vector
<rank
> badness_vector
;
1619 /* * GNAT Ada-specific information for various Ada types. */
1621 struct gnat_aux_type
1623 /* * Parallel type used to encode information about dynamic types
1624 used in Ada (such as variant records, variable-size array,
1626 struct type
* descriptive_type
;
1629 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1633 /* * The calling convention for targets supporting multiple ABIs.
1634 Right now this is only fetched from the Dwarf-2
1635 DW_AT_calling_convention attribute. The value is one of the
1638 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1640 /* * Whether this function normally returns to its caller. It is
1641 set from the DW_AT_noreturn attribute if set on the
1642 DW_TAG_subprogram. */
1644 unsigned int is_noreturn
: 1;
1646 /* * Only those DW_TAG_call_site's in this function that have
1647 DW_AT_call_tail_call set are linked in this list. Function
1648 without its tail call list complete
1649 (DW_AT_call_all_tail_calls or its superset
1650 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1651 DW_TAG_call_site's exist in such function. */
1653 struct call_site
*tail_call_list
;
1655 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1656 contains the method. */
1658 struct type
*self_type
;
1661 /* struct call_site_parameter can be referenced in callees by several ways. */
1663 enum call_site_parameter_kind
1665 /* * Use field call_site_parameter.u.dwarf_reg. */
1666 CALL_SITE_PARAMETER_DWARF_REG
,
1668 /* * Use field call_site_parameter.u.fb_offset. */
1669 CALL_SITE_PARAMETER_FB_OFFSET
,
1671 /* * Use field call_site_parameter.u.param_offset. */
1672 CALL_SITE_PARAMETER_PARAM_OFFSET
1675 struct call_site_target
1677 union field_location loc
;
1679 /* * Discriminant for union field_location. */
1681 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1684 union call_site_parameter_u
1686 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1687 as DWARF register number, for register passed
1692 /* * Offset from the callee's frame base, for stack passed
1693 parameters. This equals offset from the caller's stack
1696 CORE_ADDR fb_offset
;
1698 /* * Offset relative to the start of this PER_CU to
1699 DW_TAG_formal_parameter which is referenced by both
1700 caller and the callee. */
1702 cu_offset param_cu_off
;
1705 struct call_site_parameter
1707 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1709 union call_site_parameter_u u
;
1711 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1713 const gdb_byte
*value
;
1716 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1717 It may be NULL if not provided by DWARF. */
1719 const gdb_byte
*data_value
;
1720 size_t data_value_size
;
1723 /* * A place where a function gets called from, represented by
1724 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1728 /* * Address of the first instruction after this call. It must be
1729 the first field as we overload core_addr_hash and core_addr_eq
1734 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1736 struct call_site
*tail_call_next
;
1738 /* * Describe DW_AT_call_target. Missing attribute uses
1739 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1741 struct call_site_target target
;
1743 /* * Size of the PARAMETER array. */
1745 unsigned parameter_count
;
1747 /* * CU of the function where the call is located. It gets used
1748 for DWARF blocks execution in the parameter array below. */
1750 dwarf2_per_cu_data
*per_cu
;
1752 /* objfile of the function where the call is located. */
1754 dwarf2_per_objfile
*per_objfile
;
1756 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1758 struct call_site_parameter parameter
[1];
1761 /* The type-specific info for TYPE_CODE_FIXED_POINT types. */
1763 struct fixed_point_type_info
1765 /* The fixed point type's scaling factor. */
1766 gdb_mpq scaling_factor
;
1769 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1770 static structure. */
1772 extern const struct cplus_struct_type cplus_struct_default
;
1774 extern void allocate_cplus_struct_type (struct type
*);
1776 #define INIT_CPLUS_SPECIFIC(type) \
1777 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1778 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1779 &cplus_struct_default)
1781 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1783 #define HAVE_CPLUS_STRUCT(type) \
1784 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1785 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1787 #define INIT_NONE_SPECIFIC(type) \
1788 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1789 TYPE_MAIN_TYPE (type)->type_specific = {})
1791 extern const struct gnat_aux_type gnat_aux_default
;
1793 extern void allocate_gnat_aux_type (struct type
*);
1795 #define INIT_GNAT_SPECIFIC(type) \
1796 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1797 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1798 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1799 /* * A macro that returns non-zero if the type-specific data should be
1800 read as "gnat-stuff". */
1801 #define HAVE_GNAT_AUX_INFO(type) \
1802 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1804 /* * True if TYPE is known to be an Ada type of some kind. */
1805 #define ADA_TYPE_P(type) \
1806 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1807 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1808 && (type)->is_fixed_instance ()))
1810 #define INIT_FUNC_SPECIFIC(type) \
1811 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1812 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1813 TYPE_ZALLOC (type, \
1814 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1816 /* "struct fixed_point_type_info" has a field that has a destructor.
1817 See allocate_fixed_point_type_info to understand how this is
1819 #define INIT_FIXED_POINT_SPECIFIC(type) \
1820 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FIXED_POINT, \
1821 allocate_fixed_point_type_info (type))
1823 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1824 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1825 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1826 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1827 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1828 #define TYPE_CHAIN(thistype) (thistype)->chain
1829 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1830 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1831 so you only have to call check_typedef once. Since allocate_value
1832 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1833 #define TYPE_LENGTH(thistype) (thistype)->length
1835 /* * Return the alignment of the type in target addressable memory
1836 units, or 0 if no alignment was specified. */
1837 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1839 /* * Return the alignment of the type in target addressable memory
1840 units, or 0 if no alignment was specified. */
1841 extern unsigned type_raw_align (struct type
*);
1843 /* * Return the alignment of the type in target addressable memory
1844 units. Return 0 if the alignment cannot be determined; but note
1845 that this makes an effort to compute the alignment even it it was
1846 not specified in the debug info. */
1847 extern unsigned type_align (struct type
*);
1849 /* * Set the alignment of the type. The alignment must be a power of
1850 2. Returns false if the given value does not fit in the available
1851 space in struct type. */
1852 extern bool set_type_align (struct type
*, ULONGEST
);
1854 /* Property accessors for the type data location. */
1855 #define TYPE_DATA_LOCATION(thistype) \
1856 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1857 #define TYPE_DATA_LOCATION_BATON(thistype) \
1858 TYPE_DATA_LOCATION (thistype)->data.baton
1859 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1860 (TYPE_DATA_LOCATION (thistype)->const_val ())
1861 #define TYPE_DATA_LOCATION_KIND(thistype) \
1862 (TYPE_DATA_LOCATION (thistype)->kind ())
1863 #define TYPE_DYNAMIC_LENGTH(thistype) \
1864 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1866 /* Property accessors for the type allocated/associated. */
1867 #define TYPE_ALLOCATED_PROP(thistype) \
1868 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1869 #define TYPE_ASSOCIATED_PROP(thistype) \
1870 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1874 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1875 /* Do not call this, use TYPE_SELF_TYPE. */
1876 extern struct type
*internal_type_self_type (struct type
*);
1877 extern void set_type_self_type (struct type
*, struct type
*);
1879 extern int internal_type_vptr_fieldno (struct type
*);
1880 extern void set_type_vptr_fieldno (struct type
*, int);
1881 extern struct type
*internal_type_vptr_basetype (struct type
*);
1882 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1883 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1884 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1886 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1887 #define TYPE_SPECIFIC_FIELD(thistype) \
1888 TYPE_MAIN_TYPE(thistype)->type_specific_field
1889 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1890 where we're trying to print an Ada array using the C language.
1891 In that case, there is no "cplus_stuff", but the C language assumes
1892 that there is. What we do, in that case, is pretend that there is
1893 an implicit one which is the default cplus stuff. */
1894 #define TYPE_CPLUS_SPECIFIC(thistype) \
1895 (!HAVE_CPLUS_STRUCT(thistype) \
1896 ? (struct cplus_struct_type*)&cplus_struct_default \
1897 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1898 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1899 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1900 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1901 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1902 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1903 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1904 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1905 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1906 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1907 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1908 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1909 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1910 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1911 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1912 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1913 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1915 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1916 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1917 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1919 #define FIELD_NAME(thisfld) ((thisfld).name)
1920 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1921 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1922 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1923 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1924 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1925 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1926 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1927 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1928 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1929 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1930 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1931 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1932 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1933 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1934 #define SET_FIELD_PHYSNAME(thisfld, name) \
1935 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1936 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1937 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1938 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1939 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1940 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1941 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1942 FIELD_DWARF_BLOCK (thisfld) = (addr))
1943 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1944 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1946 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1947 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1948 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1949 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1950 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1951 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1952 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1953 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1954 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1955 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1957 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1958 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1959 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1960 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1961 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1962 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1963 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1964 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1965 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1966 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1967 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1968 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1969 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1970 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1971 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1972 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1973 #define TYPE_FIELD_PRIVATE(thistype, n) \
1974 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1975 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1976 #define TYPE_FIELD_PROTECTED(thistype, n) \
1977 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1978 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1979 #define TYPE_FIELD_IGNORE(thistype, n) \
1980 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1981 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1982 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1983 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1984 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1986 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1987 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1988 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1989 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1990 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1992 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1993 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1994 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1995 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1996 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1997 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1999 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
2000 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
2001 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
2002 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
2003 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
2004 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
2005 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
2006 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
2007 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
2008 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
2009 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
2010 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
2011 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
2012 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
2013 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
2014 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
2015 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
2017 /* Accessors for typedefs defined by a class. */
2018 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
2019 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
2020 #define TYPE_TYPEDEF_FIELD(thistype, n) \
2021 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
2022 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
2023 TYPE_TYPEDEF_FIELD (thistype, n).name
2024 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
2025 TYPE_TYPEDEF_FIELD (thistype, n).type
2026 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
2027 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
2028 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
2029 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
2030 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
2031 TYPE_TYPEDEF_FIELD (thistype, n).is_private
2033 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
2034 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
2035 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
2036 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
2037 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
2038 TYPE_NESTED_TYPES_FIELD (thistype, n).name
2039 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
2040 TYPE_NESTED_TYPES_FIELD (thistype, n).type
2041 #define TYPE_NESTED_TYPES_COUNT(thistype) \
2042 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
2043 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
2044 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
2045 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
2046 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
2048 #define TYPE_IS_OPAQUE(thistype) \
2049 ((((thistype)->code () == TYPE_CODE_STRUCT) \
2050 || ((thistype)->code () == TYPE_CODE_UNION)) \
2051 && ((thistype)->num_fields () == 0) \
2052 && (!HAVE_CPLUS_STRUCT (thistype) \
2053 || TYPE_NFN_FIELDS (thistype) == 0) \
2054 && ((thistype)->is_stub () || !(thistype)->stub_is_supported ()))
2056 /* * A helper macro that returns the name of a type or "unnamed type"
2057 if the type has no name. */
2059 #define TYPE_SAFE_NAME(type) \
2060 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
2062 /* * A helper macro that returns the name of an error type. If the
2063 type has a name, it is used; otherwise, a default is used. */
2065 #define TYPE_ERROR_NAME(type) \
2066 (type->name () ? type->name () : _("<error type>"))
2068 /* Given TYPE, return its floatformat. */
2069 const struct floatformat
*floatformat_from_type (const struct type
*type
);
2073 /* Integral types. */
2075 /* Implicit size/sign (based on the architecture's ABI). */
2076 struct type
*builtin_void
;
2077 struct type
*builtin_char
;
2078 struct type
*builtin_short
;
2079 struct type
*builtin_int
;
2080 struct type
*builtin_long
;
2081 struct type
*builtin_signed_char
;
2082 struct type
*builtin_unsigned_char
;
2083 struct type
*builtin_unsigned_short
;
2084 struct type
*builtin_unsigned_int
;
2085 struct type
*builtin_unsigned_long
;
2086 struct type
*builtin_bfloat16
;
2087 struct type
*builtin_half
;
2088 struct type
*builtin_float
;
2089 struct type
*builtin_double
;
2090 struct type
*builtin_long_double
;
2091 struct type
*builtin_complex
;
2092 struct type
*builtin_double_complex
;
2093 struct type
*builtin_string
;
2094 struct type
*builtin_bool
;
2095 struct type
*builtin_long_long
;
2096 struct type
*builtin_unsigned_long_long
;
2097 struct type
*builtin_decfloat
;
2098 struct type
*builtin_decdouble
;
2099 struct type
*builtin_declong
;
2101 /* "True" character types.
2102 We use these for the '/c' print format, because c_char is just a
2103 one-byte integral type, which languages less laid back than C
2104 will print as ... well, a one-byte integral type. */
2105 struct type
*builtin_true_char
;
2106 struct type
*builtin_true_unsigned_char
;
2108 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
2109 is for when an architecture needs to describe a register that has
2111 struct type
*builtin_int0
;
2112 struct type
*builtin_int8
;
2113 struct type
*builtin_uint8
;
2114 struct type
*builtin_int16
;
2115 struct type
*builtin_uint16
;
2116 struct type
*builtin_int24
;
2117 struct type
*builtin_uint24
;
2118 struct type
*builtin_int32
;
2119 struct type
*builtin_uint32
;
2120 struct type
*builtin_int64
;
2121 struct type
*builtin_uint64
;
2122 struct type
*builtin_int128
;
2123 struct type
*builtin_uint128
;
2125 /* Wide character types. */
2126 struct type
*builtin_char16
;
2127 struct type
*builtin_char32
;
2128 struct type
*builtin_wchar
;
2130 /* Pointer types. */
2132 /* * `pointer to data' type. Some target platforms use an implicitly
2133 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
2134 struct type
*builtin_data_ptr
;
2136 /* * `pointer to function (returning void)' type. Harvard
2137 architectures mean that ABI function and code pointers are not
2138 interconvertible. Similarly, since ANSI, C standards have
2139 explicitly said that pointers to functions and pointers to data
2140 are not interconvertible --- that is, you can't cast a function
2141 pointer to void * and back, and expect to get the same value.
2142 However, all function pointer types are interconvertible, so void
2143 (*) () can server as a generic function pointer. */
2145 struct type
*builtin_func_ptr
;
2147 /* * `function returning pointer to function (returning void)' type.
2148 The final void return type is not significant for it. */
2150 struct type
*builtin_func_func
;
2152 /* Special-purpose types. */
2154 /* * This type is used to represent a GDB internal function. */
2156 struct type
*internal_fn
;
2158 /* * This type is used to represent an xmethod. */
2159 struct type
*xmethod
;
2162 /* * Return the type table for the specified architecture. */
2164 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
2166 /* * Per-objfile types used by symbol readers. */
2170 /* Basic types based on the objfile architecture. */
2171 struct type
*builtin_void
;
2172 struct type
*builtin_char
;
2173 struct type
*builtin_short
;
2174 struct type
*builtin_int
;
2175 struct type
*builtin_long
;
2176 struct type
*builtin_long_long
;
2177 struct type
*builtin_signed_char
;
2178 struct type
*builtin_unsigned_char
;
2179 struct type
*builtin_unsigned_short
;
2180 struct type
*builtin_unsigned_int
;
2181 struct type
*builtin_unsigned_long
;
2182 struct type
*builtin_unsigned_long_long
;
2183 struct type
*builtin_half
;
2184 struct type
*builtin_float
;
2185 struct type
*builtin_double
;
2186 struct type
*builtin_long_double
;
2188 /* * This type is used to represent symbol addresses. */
2189 struct type
*builtin_core_addr
;
2191 /* * This type represents a type that was unrecognized in symbol
2193 struct type
*builtin_error
;
2195 /* * Types used for symbols with no debug information. */
2196 struct type
*nodebug_text_symbol
;
2197 struct type
*nodebug_text_gnu_ifunc_symbol
;
2198 struct type
*nodebug_got_plt_symbol
;
2199 struct type
*nodebug_data_symbol
;
2200 struct type
*nodebug_unknown_symbol
;
2201 struct type
*nodebug_tls_symbol
;
2204 /* * Return the type table for the specified objfile. */
2206 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
2208 /* Explicit floating-point formats. See "floatformat.h". */
2209 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
2210 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
2211 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2212 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2213 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2214 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2215 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2216 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2217 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2218 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2219 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2220 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2221 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2223 /* Allocate space for storing data associated with a particular
2224 type. We ensure that the space is allocated using the same
2225 mechanism that was used to allocate the space for the type
2226 structure itself. I.e. if the type is on an objfile's
2227 objfile_obstack, then the space for data associated with that type
2228 will also be allocated on the objfile_obstack. If the type is
2229 associated with a gdbarch, then the space for data associated with that
2230 type will also be allocated on the gdbarch_obstack.
2232 If a type is not associated with neither an objfile or a gdbarch then
2233 you should not use this macro to allocate space for data, instead you
2234 should call xmalloc directly, and ensure the memory is correctly freed
2235 when it is no longer needed. */
2237 #define TYPE_ALLOC(t,size) \
2238 (obstack_alloc (((t)->is_objfile_owned () \
2239 ? &((t)->objfile ()->objfile_obstack) \
2240 : gdbarch_obstack ((t)->arch ())), \
2244 /* See comment on TYPE_ALLOC. */
2246 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2248 /* Use alloc_type to allocate a type owned by an objfile. Use
2249 alloc_type_arch to allocate a type owned by an architecture. Use
2250 alloc_type_copy to allocate a type with the same owner as a
2251 pre-existing template type, no matter whether objfile or
2253 extern struct type
*alloc_type (struct objfile
*);
2254 extern struct type
*alloc_type_arch (struct gdbarch
*);
2255 extern struct type
*alloc_type_copy (const struct type
*);
2257 /* * Return the type's architecture. For types owned by an
2258 architecture, that architecture is returned. For types owned by an
2259 objfile, that objfile's architecture is returned. */
2261 extern struct gdbarch
*get_type_arch (const struct type
*);
2263 /* * This returns the target type (or NULL) of TYPE, also skipping
2266 extern struct type
*get_target_type (struct type
*type
);
2268 /* Return the equivalent of TYPE_LENGTH, but in number of target
2269 addressable memory units of the associated gdbarch instead of bytes. */
2271 extern unsigned int type_length_units (struct type
*type
);
2273 /* * Helper function to construct objfile-owned types. */
2275 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2277 extern struct type
*init_integer_type (struct objfile
*, int, int,
2279 extern struct type
*init_character_type (struct objfile
*, int, int,
2281 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2283 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2284 const struct floatformat
**,
2285 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2286 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2287 extern struct type
*init_complex_type (const char *, struct type
*);
2288 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2290 extern struct type
*init_fixed_point_type (struct objfile
*, int, int,
2293 /* Helper functions to construct architecture-owned types. */
2294 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2296 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2298 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2300 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2302 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2303 const struct floatformat
**);
2304 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2305 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2308 /* Helper functions to construct a struct or record type. An
2309 initially empty type is created using arch_composite_type().
2310 Fields are then added using append_composite_type_field*(). A union
2311 type has its size set to the largest field. A struct type has each
2312 field packed against the previous. */
2314 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2315 const char *name
, enum type_code code
);
2316 extern void append_composite_type_field (struct type
*t
, const char *name
,
2317 struct type
*field
);
2318 extern void append_composite_type_field_aligned (struct type
*t
,
2322 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2323 struct type
*field
);
2325 /* Helper functions to construct a bit flags type. An initially empty
2326 type is created using arch_flag_type(). Flags are then added using
2327 append_flag_type_field() and append_flag_type_flag(). */
2328 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2329 const char *name
, int bit
);
2330 extern void append_flags_type_field (struct type
*type
,
2331 int start_bitpos
, int nr_bits
,
2332 struct type
*field_type
, const char *name
);
2333 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2336 extern void make_vector_type (struct type
*array_type
);
2337 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2339 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2340 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2341 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2344 extern struct type
*make_reference_type (struct type
*, struct type
**,
2347 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2349 extern struct type
*make_restrict_type (struct type
*);
2351 extern struct type
*make_unqualified_type (struct type
*);
2353 extern struct type
*make_atomic_type (struct type
*);
2355 extern void replace_type (struct type
*, struct type
*);
2357 extern type_instance_flags address_space_name_to_type_instance_flags
2358 (struct gdbarch
*, const char *);
2360 extern const char *address_space_type_instance_flags_to_name
2361 (struct gdbarch
*, type_instance_flags
);
2363 extern struct type
*make_type_with_address_space
2364 (struct type
*type
, type_instance_flags space_identifier
);
2366 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2368 extern struct type
*lookup_methodptr_type (struct type
*);
2370 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2371 struct type
*to_type
, struct field
*args
,
2372 int nargs
, int varargs
);
2374 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2377 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2379 extern struct type
*allocate_stub_method (struct type
*);
2381 extern const char *type_name_or_error (struct type
*type
);
2385 /* The field of the element, or NULL if no element was found. */
2386 struct field
*field
;
2388 /* The bit offset of the element in the parent structure. */
2392 /* Given a type TYPE, lookup the field and offset of the component named
2395 TYPE can be either a struct or union, or a pointer or reference to
2396 a struct or union. If it is a pointer or reference, its target
2397 type is automatically used. Thus '.' and '->' are interchangable,
2398 as specified for the definitions of the expression element types
2399 STRUCTOP_STRUCT and STRUCTOP_PTR.
2401 If NOERR is nonzero, the returned structure will have field set to
2402 NULL if there is no component named NAME.
2404 If the component NAME is a field in an anonymous substructure of
2405 TYPE, the returned offset is a "global" offset relative to TYPE
2406 rather than an offset within the substructure. */
2408 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2410 /* Given a type TYPE, lookup the type of the component named NAME.
2412 TYPE can be either a struct or union, or a pointer or reference to
2413 a struct or union. If it is a pointer or reference, its target
2414 type is automatically used. Thus '.' and '->' are interchangable,
2415 as specified for the definitions of the expression element types
2416 STRUCTOP_STRUCT and STRUCTOP_PTR.
2418 If NOERR is nonzero, return NULL if there is no component named
2421 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2423 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2425 extern struct type
*lookup_pointer_type (struct type
*);
2427 extern struct type
*make_function_type (struct type
*, struct type
**);
2429 extern struct type
*lookup_function_type (struct type
*);
2431 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2435 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2439 extern struct type
*create_array_type_with_stride
2440 (struct type
*, struct type
*, struct type
*,
2441 struct dynamic_prop
*, unsigned int);
2443 extern struct type
*create_range_type (struct type
*, struct type
*,
2444 const struct dynamic_prop
*,
2445 const struct dynamic_prop
*,
2448 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2449 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2452 extern struct type
* create_range_type_with_stride
2453 (struct type
*result_type
, struct type
*index_type
,
2454 const struct dynamic_prop
*low_bound
,
2455 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2456 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2458 extern struct type
*create_array_type (struct type
*, struct type
*,
2461 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2463 extern struct type
*create_string_type (struct type
*, struct type
*,
2465 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2467 extern struct type
*create_set_type (struct type
*, struct type
*);
2469 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2472 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2475 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2477 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2479 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2480 ADDR specifies the location of the variable the type is bound to.
2481 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2482 static properties is returned. */
2483 extern struct type
*resolve_dynamic_type
2484 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2487 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2488 extern int is_dynamic_type (struct type
*type
);
2490 extern struct type
*check_typedef (struct type
*);
2492 extern void check_stub_method_group (struct type
*, int);
2494 extern char *gdb_mangle_name (struct type
*, int, int);
2496 extern struct type
*lookup_typename (const struct language_defn
*,
2497 const char *, const struct block
*, int);
2499 extern struct type
*lookup_template_type (const char *, struct type
*,
2500 const struct block
*);
2502 extern int get_vptr_fieldno (struct type
*, struct type
**);
2504 /* Set *LOWP and *HIGHP to the lower and upper bounds of discrete type
2507 Return true if the two bounds are available, false otherwise. */
2509 extern bool get_discrete_bounds (struct type
*type
, LONGEST
*lowp
,
2512 /* If TYPE's low bound is a known constant, return it, else return nullopt. */
2514 extern gdb::optional
<LONGEST
> get_discrete_low_bound (struct type
*type
);
2516 /* If TYPE's high bound is a known constant, return it, else return nullopt. */
2518 extern gdb::optional
<LONGEST
> get_discrete_high_bound (struct type
*type
);
2520 /* Assuming TYPE is a simple, non-empty array type, compute its upper
2521 and lower bound. Save the low bound into LOW_BOUND if not NULL.
2522 Save the high bound into HIGH_BOUND if not NULL.
2524 Return true if the operation was successful. Return false otherwise,
2525 in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified. */
2527 extern bool get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2528 LONGEST
*high_bound
);
2530 extern gdb::optional
<LONGEST
> discrete_position (struct type
*type
,
2533 extern int class_types_same_p (const struct type
*, const struct type
*);
2535 extern int is_ancestor (struct type
*, struct type
*);
2537 extern int is_public_ancestor (struct type
*, struct type
*);
2539 extern int is_unique_ancestor (struct type
*, struct value
*);
2541 /* Overload resolution */
2543 /* * Badness if parameter list length doesn't match arg list length. */
2544 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2546 /* * Dummy badness value for nonexistent parameter positions. */
2547 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2548 /* * Badness if no conversion among types. */
2549 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2551 /* * Badness of an exact match. */
2552 extern const struct rank EXACT_MATCH_BADNESS
;
2554 /* * Badness of integral promotion. */
2555 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2556 /* * Badness of floating promotion. */
2557 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2558 /* * Badness of converting a derived class pointer
2559 to a base class pointer. */
2560 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2561 /* * Badness of integral conversion. */
2562 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2563 /* * Badness of floating conversion. */
2564 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2565 /* * Badness of integer<->floating conversions. */
2566 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2567 /* * Badness of conversion of pointer to void pointer. */
2568 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2569 /* * Badness of conversion to boolean. */
2570 extern const struct rank BOOL_CONVERSION_BADNESS
;
2571 /* * Badness of converting derived to base class. */
2572 extern const struct rank BASE_CONVERSION_BADNESS
;
2573 /* * Badness of converting from non-reference to reference. Subrank
2574 is the type of reference conversion being done. */
2575 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2576 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2577 /* * Conversion to rvalue reference. */
2578 #define REFERENCE_CONVERSION_RVALUE 1
2579 /* * Conversion to const lvalue reference. */
2580 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2582 /* * Badness of converting integer 0 to NULL pointer. */
2583 extern const struct rank NULL_POINTER_CONVERSION
;
2584 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2586 extern const struct rank CV_CONVERSION_BADNESS
;
2587 #define CV_CONVERSION_CONST 1
2588 #define CV_CONVERSION_VOLATILE 2
2590 /* Non-standard conversions allowed by the debugger */
2592 /* * Converting a pointer to an int is usually OK. */
2593 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2595 /* * Badness of converting a (non-zero) integer constant
2597 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2599 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2600 extern int compare_ranks (struct rank a
, struct rank b
);
2602 extern int compare_badness (const badness_vector
&,
2603 const badness_vector
&);
2605 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2606 gdb::array_view
<value
*> args
);
2608 extern struct rank
rank_one_type (struct type
*, struct type
*,
2611 extern void recursive_dump_type (struct type
*, int);
2613 extern int field_is_static (struct field
*);
2617 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2618 const struct value_print_options
*,
2619 int, struct ui_file
*);
2621 extern int can_dereference (struct type
*);
2623 extern int is_integral_type (struct type
*);
2625 extern int is_floating_type (struct type
*);
2627 extern int is_scalar_type (struct type
*type
);
2629 extern int is_scalar_type_recursive (struct type
*);
2631 extern int class_or_union_p (const struct type
*);
2633 extern void maintenance_print_type (const char *, int);
2635 extern htab_up
create_copied_types_hash (struct objfile
*objfile
);
2637 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2639 htab_t copied_types
);
2641 extern struct type
*copy_type (const struct type
*type
);
2643 extern bool types_equal (struct type
*, struct type
*);
2645 extern bool types_deeply_equal (struct type
*, struct type
*);
2647 extern int type_not_allocated (const struct type
*type
);
2649 extern int type_not_associated (const struct type
*type
);
2651 /* Return True if TYPE is a TYPE_CODE_FIXED_POINT or if TYPE is
2652 a range type whose base type is a TYPE_CODE_FIXED_POINT. */
2653 extern bool is_fixed_point_type (struct type
*type
);
2655 /* Allocate a fixed-point type info for TYPE. This should only be
2656 called by INIT_FIXED_POINT_SPECIFIC. */
2657 extern void allocate_fixed_point_type_info (struct type
*type
);
2659 /* * When the type includes explicit byte ordering, return that.
2660 Otherwise, the byte ordering from gdbarch_byte_order for
2661 get_type_arch is returned. */
2663 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2665 /* A flag to enable printing of debugging information of C++
2668 extern unsigned int overload_debug
;
2670 #endif /* GDBTYPES_H */