2 /* Internal type definitions for GDB.
4 Copyright (C) 1992-2020 Free Software Foundation, Inc.
6 Contributed by Cygnus Support, using pieces from other GDB modules.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #if !defined (GDBTYPES_H)
26 /* * \page gdbtypes GDB Types
28 GDB represents all the different kinds of types in programming
29 languages using a common representation defined in gdbtypes.h.
31 The main data structure is main_type; it consists of a code (such
32 as #TYPE_CODE_ENUM for enumeration types), a number of
33 generally-useful fields such as the printable name, and finally a
34 field main_type::type_specific that is a union of info specific to
35 particular languages or other special cases (such as calling
38 The available type codes are defined in enum #type_code. The enum
39 includes codes both for types that are common across a variety
40 of languages, and for types that are language-specific.
42 Most accesses to type fields go through macros such as
43 #TYPE_CODE(thistype) and #TYPE_FN_FIELD_CONST(thisfn, n). These are
44 written such that they can be used as both rvalues and lvalues.
48 #include "gdbsupport/array-view.h"
49 #include "gdbsupport/offset-type.h"
50 #include "gdbsupport/enum-flags.h"
51 #include "gdbsupport/underlying.h"
52 #include "gdbsupport/print-utils.h"
54 #include "gdb_obstack.h"
56 /* Forward declarations for prototypes. */
59 struct value_print_options
;
61 struct dwarf2_per_cu_data
;
62 struct dwarf2_per_objfile
;
64 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
65 are already DWARF-specific. */
67 /* * Offset relative to the start of its containing CU (compilation
69 DEFINE_OFFSET_TYPE (cu_offset
, unsigned int);
71 /* * Offset relative to the start of its .debug_info or .debug_types
73 DEFINE_OFFSET_TYPE (sect_offset
, uint64_t);
76 sect_offset_str (sect_offset offset
)
78 return hex_string (to_underlying (offset
));
81 /* Some macros for char-based bitfields. */
83 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
84 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
85 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
86 #define B_TYPE unsigned char
87 #define B_BYTES(x) ( 1 + ((x)>>3) )
88 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
90 /* * Different kinds of data types are distinguished by the `code'
95 TYPE_CODE_BITSTRING
= -1, /**< Deprecated */
96 TYPE_CODE_UNDEF
= 0, /**< Not used; catches errors */
97 TYPE_CODE_PTR
, /**< Pointer type */
99 /* * Array type with lower & upper bounds.
101 Regardless of the language, GDB represents multidimensional
102 array types the way C does: as arrays of arrays. So an
103 instance of a GDB array type T can always be seen as a series
104 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
107 Row-major languages like C lay out multi-dimensional arrays so
108 that incrementing the rightmost index in a subscripting
109 expression results in the smallest change in the address of the
110 element referred to. Column-major languages like Fortran lay
111 them out so that incrementing the leftmost index results in the
114 This means that, in column-major languages, working our way
115 from type to target type corresponds to working through indices
116 from right to left, not left to right. */
119 TYPE_CODE_STRUCT
, /**< C struct or Pascal record */
120 TYPE_CODE_UNION
, /**< C union or Pascal variant part */
121 TYPE_CODE_ENUM
, /**< Enumeration type */
122 TYPE_CODE_FLAGS
, /**< Bit flags type */
123 TYPE_CODE_FUNC
, /**< Function type */
124 TYPE_CODE_INT
, /**< Integer type */
126 /* * Floating type. This is *NOT* a complex type. */
129 /* * Void type. The length field specifies the length (probably
130 always one) which is used in pointer arithmetic involving
131 pointers to this type, but actually dereferencing such a
132 pointer is invalid; a void type has no length and no actual
133 representation in memory or registers. A pointer to a void
134 type is a generic pointer. */
137 TYPE_CODE_SET
, /**< Pascal sets */
138 TYPE_CODE_RANGE
, /**< Range (integers within spec'd bounds). */
140 /* * A string type which is like an array of character but prints
141 differently. It does not contain a length field as Pascal
142 strings (for many Pascals, anyway) do; if we want to deal with
143 such strings, we should use a new type code. */
146 /* * Unknown type. The length field is valid if we were able to
147 deduce that much about the type, or 0 if we don't even know
152 TYPE_CODE_METHOD
, /**< Method type */
154 /* * Pointer-to-member-function type. This describes how to access a
155 particular member function of a class (possibly a virtual
156 member function). The representation may vary between different
160 /* * Pointer-to-member type. This is the offset within a class to
161 some particular data member. The only currently supported
162 representation uses an unbiased offset, with -1 representing
163 NULL; this is used by the Itanium C++ ABI (used by GCC on all
167 TYPE_CODE_REF
, /**< C++ Reference types */
169 TYPE_CODE_RVALUE_REF
, /**< C++ rvalue reference types */
171 TYPE_CODE_CHAR
, /**< *real* character type */
173 /* * Boolean type. 0 is false, 1 is true, and other values are
174 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
178 TYPE_CODE_COMPLEX
, /**< Complex float */
182 TYPE_CODE_NAMESPACE
, /**< C++ namespace. */
184 TYPE_CODE_DECFLOAT
, /**< Decimal floating point. */
186 TYPE_CODE_MODULE
, /**< Fortran module. */
188 /* * Internal function type. */
189 TYPE_CODE_INTERNAL_FUNCTION
,
191 /* * Methods implemented in extension languages. */
195 /* * Some bits for the type's instance_flags word. See the macros
196 below for documentation on each bit. */
198 enum type_instance_flag_value
: unsigned
200 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
201 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
202 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
203 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
204 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
205 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5),
206 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
207 TYPE_INSTANCE_FLAG_RESTRICT
= (1 << 7),
208 TYPE_INSTANCE_FLAG_ATOMIC
= (1 << 8)
211 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value
, type_instance_flags
);
213 /* * A compiler may supply dwarf instrumentation
214 that indicates the desired endian interpretation of the variable
215 differs from the native endian representation. */
217 #define TYPE_ENDIANITY_NOT_DEFAULT(t) (TYPE_MAIN_TYPE (t)->flag_endianity_not_default)
219 /* * This is a function type which appears to have a prototype. We
220 need this for function calls in order to tell us if it's necessary
221 to coerce the args, or to just do the standard conversions. This
222 is used with a short field. */
224 #define TYPE_PROTOTYPED(t) ((t)->is_prototyped ())
226 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
229 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
231 /* * Identify a vector type. Gcc is handling this by adding an extra
232 attribute to the array type. We slurp that in as a new flag of a
233 type. This is used only in dwarf2read.c. */
234 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
236 /* * The debugging formats (especially STABS) do not contain enough
237 information to represent all Ada types---especially those whose
238 size depends on dynamic quantities. Therefore, the GNAT Ada
239 compiler includes extra information in the form of additional type
240 definitions connected by naming conventions. This flag indicates
241 that the type is an ordinary (unencoded) GDB type that has been
242 created from the necessary run-time information, and does not need
243 further interpretation. Optionally marks ordinary, fixed-size GDB
246 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
248 /* * This debug target supports TYPE_STUB(t). In the unsupported case
249 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
250 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
251 guessed the TYPE_STUB(t) value (see dwarfread.c). */
253 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
255 /* * Not textual. By default, GDB treats all single byte integers as
256 characters (or elements of strings) unless this flag is set. */
258 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
260 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
261 address is returned by this function call. TYPE_TARGET_TYPE
262 determines the final returned function type to be presented to
265 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
267 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
268 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
269 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
271 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
272 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
273 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
275 /* * True if this type was declared using the "class" keyword. This is
276 only valid for C++ structure and enum types. If false, a structure
277 was declared as a "struct"; if true it was declared "class". For
278 enum types, this is true when "enum class" or "enum struct" was
279 used to declare the type.. */
281 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
283 /* * True if this type is a "flag" enum. A flag enum is one where all
284 the values are pairwise disjoint when "and"ed together. This
285 affects how enum values are printed. */
287 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
289 /* * Constant type. If this is set, the corresponding type has a
292 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
294 /* * Volatile type. If this is set, the corresponding type has a
295 volatile modifier. */
297 #define TYPE_VOLATILE(t) \
298 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
300 /* * Restrict type. If this is set, the corresponding type has a
301 restrict modifier. */
303 #define TYPE_RESTRICT(t) \
304 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
306 /* * Atomic type. If this is set, the corresponding type has an
309 #define TYPE_ATOMIC(t) \
310 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
312 /* * True if this type represents either an lvalue or lvalue reference type. */
314 #define TYPE_IS_REFERENCE(t) \
315 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
317 /* * True if this type is allocatable. */
318 #define TYPE_IS_ALLOCATABLE(t) \
319 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
321 /* * True if this type has variant parts. */
322 #define TYPE_HAS_VARIANT_PARTS(t) \
323 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
325 /* * True if this type has a dynamic length. */
326 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
327 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
329 /* * Instruction-space delimited type. This is for Harvard architectures
330 which have separate instruction and data address spaces (and perhaps
333 GDB usually defines a flat address space that is a superset of the
334 architecture's two (or more) address spaces, but this is an extension
335 of the architecture's model.
337 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
338 resides in instruction memory, even if its address (in the extended
339 flat address space) does not reflect this.
341 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
342 corresponding type resides in the data memory space, even if
343 this is not indicated by its (flat address space) address.
345 If neither flag is set, the default space for functions / methods
346 is instruction space, and for data objects is data memory. */
348 #define TYPE_CODE_SPACE(t) \
349 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
351 #define TYPE_DATA_SPACE(t) \
352 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
354 /* * Address class flags. Some environments provide for pointers
355 whose size is different from that of a normal pointer or address
356 types where the bits are interpreted differently than normal
357 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
358 target specific ways to represent these different types of address
361 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
362 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
363 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
364 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
365 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
366 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
367 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
368 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
370 /* * Information about a single discriminant. */
372 struct discriminant_range
374 /* * The range of values for the variant. This is an inclusive
378 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
379 is true if this should be an unsigned comparison; false for
381 bool contains (ULONGEST value
, bool is_unsigned
) const
384 return value
>= low
&& value
<= high
;
385 LONGEST valuel
= (LONGEST
) value
;
386 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
392 /* * A single variant. A variant has a list of discriminant values.
393 When the discriminator matches one of these, the variant is
394 enabled. Each variant controls zero or more fields; and may also
395 control other variant parts as well. This struct corresponds to
396 DW_TAG_variant in DWARF. */
398 struct variant
: allocate_on_obstack
400 /* * The discriminant ranges for this variant. */
401 gdb::array_view
<discriminant_range
> discriminants
;
403 /* * The fields controlled by this variant. This is inclusive on
404 the low end and exclusive on the high end. A variant may not
405 control any fields, in which case the two values will be equal.
406 These are indexes into the type's array of fields. */
410 /* * Variant parts controlled by this variant. */
411 gdb::array_view
<variant_part
> parts
;
413 /* * Return true if this is the default variant. The default
414 variant can be recognized because it has no associated
416 bool is_default () const
418 return discriminants
.empty ();
421 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
422 if this should be an unsigned comparison; false for signed. */
423 bool matches (ULONGEST value
, bool is_unsigned
) const;
426 /* * A variant part. Each variant part has an optional discriminant
427 and holds an array of variants. This struct corresponds to
428 DW_TAG_variant_part in DWARF. */
430 struct variant_part
: allocate_on_obstack
432 /* * The index of the discriminant field in the outer type. This is
433 an index into the type's array of fields. If this is -1, there
434 is no discriminant, and only the default variant can be
435 considered to be selected. */
436 int discriminant_index
;
438 /* * True if this discriminant is unsigned; false if signed. This
439 comes from the type of the discriminant. */
442 /* * The variants that are controlled by this variant part. Note
443 that these will always be sorted by field number. */
444 gdb::array_view
<variant
> variants
;
448 enum dynamic_prop_kind
450 PROP_UNDEFINED
, /* Not defined. */
451 PROP_CONST
, /* Constant. */
452 PROP_ADDR_OFFSET
, /* Address offset. */
453 PROP_LOCEXPR
, /* Location expression. */
454 PROP_LOCLIST
, /* Location list. */
455 PROP_VARIANT_PARTS
, /* Variant parts. */
456 PROP_TYPE
, /* Type. */
459 union dynamic_prop_data
461 /* Storage for constant property. */
465 /* Storage for dynamic property. */
469 /* Storage of variant parts for a type. A type with variant parts
470 has all its fields "linearized" -- stored in a single field
471 array, just as if they had all been declared that way. The
472 variant parts are attached via a dynamic property, and then are
473 used to control which fields end up in the final type during
474 dynamic type resolution. */
476 const gdb::array_view
<variant_part
> *variant_parts
;
478 /* Once a variant type is resolved, we may want to be able to go
479 from the resolved type to the original type. In this case we
480 rewrite the property's kind and set this field. */
482 struct type
*original_type
;
485 /* * Used to store a dynamic property. */
489 dynamic_prop_kind
kind () const
494 void set_undefined ()
496 m_kind
= PROP_UNDEFINED
;
499 LONGEST
const_val () const
501 gdb_assert (m_kind
== PROP_CONST
);
503 return m_data
.const_val
;
506 void set_const_val (LONGEST const_val
)
509 m_data
.const_val
= const_val
;
514 gdb_assert (m_kind
== PROP_LOCEXPR
515 || m_kind
== PROP_LOCLIST
516 || m_kind
== PROP_ADDR_OFFSET
);
521 void set_locexpr (void *baton
)
523 m_kind
= PROP_LOCEXPR
;
524 m_data
.baton
= baton
;
527 void set_loclist (void *baton
)
529 m_kind
= PROP_LOCLIST
;
530 m_data
.baton
= baton
;
533 void set_addr_offset (void *baton
)
535 m_kind
= PROP_ADDR_OFFSET
;
536 m_data
.baton
= baton
;
539 const gdb::array_view
<variant_part
> *variant_parts () const
541 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
543 return m_data
.variant_parts
;
546 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
548 m_kind
= PROP_VARIANT_PARTS
;
549 m_data
.variant_parts
= variant_parts
;
552 struct type
*original_type () const
554 gdb_assert (m_kind
== PROP_TYPE
);
556 return m_data
.original_type
;
559 void set_original_type (struct type
*original_type
)
562 m_data
.original_type
= original_type
;
565 /* Determine which field of the union dynamic_prop.data is used. */
566 enum dynamic_prop_kind m_kind
;
568 /* Storage for dynamic or static value. */
569 union dynamic_prop_data m_data
;
572 /* Compare two dynamic_prop objects for equality. dynamic_prop
573 instances are equal iff they have the same type and storage. */
574 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
576 /* Compare two dynamic_prop objects for inequality. */
577 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
582 /* * Define a type's dynamic property node kind. */
583 enum dynamic_prop_node_kind
585 /* A property providing a type's data location.
586 Evaluating this field yields to the location of an object's data. */
587 DYN_PROP_DATA_LOCATION
,
589 /* A property representing DW_AT_allocated. The presence of this attribute
590 indicates that the object of the type can be allocated/deallocated. */
593 /* A property representing DW_AT_associated. The presence of this attribute
594 indicated that the object of the type can be associated. */
597 /* A property providing an array's byte stride. */
598 DYN_PROP_BYTE_STRIDE
,
600 /* A property holding variant parts. */
601 DYN_PROP_VARIANT_PARTS
,
603 /* A property holding the size of the type. */
607 /* * List for dynamic type attributes. */
608 struct dynamic_prop_list
610 /* The kind of dynamic prop in this node. */
611 enum dynamic_prop_node_kind prop_kind
;
613 /* The dynamic property itself. */
614 struct dynamic_prop prop
;
616 /* A pointer to the next dynamic property. */
617 struct dynamic_prop_list
*next
;
620 /* * Determine which field of the union main_type.fields[x].loc is
625 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
626 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
627 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
628 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
629 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
632 /* * A discriminant to determine which field in the
633 main_type.type_specific union is being used, if any.
635 For types such as TYPE_CODE_FLT, the use of this
636 discriminant is really redundant, as we know from the type code
637 which field is going to be used. As such, it would be possible to
638 reduce the size of this enum in order to save a bit or two for
639 other fields of struct main_type. But, since we still have extra
640 room , and for the sake of clarity and consistency, we treat all fields
641 of the union the same way. */
643 enum type_specific_kind
646 TYPE_SPECIFIC_CPLUS_STUFF
,
647 TYPE_SPECIFIC_GNAT_STUFF
,
648 TYPE_SPECIFIC_FLOATFORMAT
,
649 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
651 TYPE_SPECIFIC_SELF_TYPE
656 struct objfile
*objfile
;
657 struct gdbarch
*gdbarch
;
662 /* * Position of this field, counting in bits from start of
663 containing structure. For big-endian targets, it is the bit
664 offset to the MSB. For little-endian targets, it is the bit
665 offset to the LSB. */
672 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
673 physaddr is the location (in the target) of the static
674 field. Otherwise, physname is the mangled label of the
678 const char *physname
;
680 /* * The field location can be computed by evaluating the
681 following DWARF block. Its DATA is allocated on
682 objfile_obstack - no CU load is needed to access it. */
684 struct dwarf2_locexpr_baton
*dwarf_block
;
689 struct type
*type () const
694 void set_type (struct type
*type
)
699 union field_location loc
;
701 /* * For a function or member type, this is 1 if the argument is
702 marked artificial. Artificial arguments should not be shown
703 to the user. For TYPE_CODE_RANGE it is set if the specific
704 bound is not defined. */
706 unsigned int artificial
: 1;
708 /* * Discriminant for union field_location. */
710 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
712 /* * Size of this field, in bits, or zero if not packed.
713 If non-zero in an array type, indicates the element size in
714 bits (used only in Ada at the moment).
715 For an unpacked field, the field's type's length
716 says how many bytes the field occupies. */
718 unsigned int bitsize
: 28;
720 /* * In a struct or union type, type of this field.
721 - In a function or member type, type of this argument.
722 - In an array type, the domain-type of the array. */
726 /* * Name of field, value or argument.
727 NULL for range bounds, array domains, and member function
735 ULONGEST
bit_stride () const
737 if (this->flag_is_byte_stride
)
738 return this->stride
.const_val () * 8;
740 return this->stride
.const_val ();
743 /* * Low bound of range. */
745 struct dynamic_prop low
;
747 /* * High bound of range. */
749 struct dynamic_prop high
;
751 /* The stride value for this range. This can be stored in bits or bytes
752 based on the value of BYTE_STRIDE_P. It is optional to have a stride
753 value, if this range has no stride value defined then this will be set
754 to the constant zero. */
756 struct dynamic_prop stride
;
758 /* * The bias. Sometimes a range value is biased before storage.
759 The bias is added to the stored bits to form the true value. */
763 /* True if HIGH range bound contains the number of elements in the
764 subrange. This affects how the final high bound is computed. */
766 unsigned int flag_upper_bound_is_count
: 1;
768 /* True if LOW or/and HIGH are resolved into a static bound from
771 unsigned int flag_bound_evaluated
: 1;
773 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
775 unsigned int flag_is_byte_stride
: 1;
778 /* Compare two range_bounds objects for equality. Simply does
779 memberwise comparison. */
780 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
782 /* Compare two range_bounds objects for inequality. */
783 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
790 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
791 point to cplus_struct_default, a default static instance of a
792 struct cplus_struct_type. */
794 struct cplus_struct_type
*cplus_stuff
;
796 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
797 provides additional information. */
799 struct gnat_aux_type
*gnat_stuff
;
801 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
802 floatformat object that describes the floating-point value
803 that resides within the type. */
805 const struct floatformat
*floatformat
;
807 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
809 struct func_type
*func_stuff
;
811 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
812 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
815 struct type
*self_type
;
818 /* * Main structure representing a type in GDB.
820 This structure is space-critical. Its layout has been tweaked to
821 reduce the space used. */
825 /* * Code for kind of type. */
827 ENUM_BITFIELD(type_code
) code
: 8;
829 /* * Flags about this type. These fields appear at this location
830 because they packs nicely here. See the TYPE_* macros for
831 documentation about these fields. */
833 unsigned int m_flag_unsigned
: 1;
834 unsigned int m_flag_nosign
: 1;
835 unsigned int m_flag_stub
: 1;
836 unsigned int m_flag_target_stub
: 1;
837 unsigned int m_flag_prototyped
: 1;
838 unsigned int flag_varargs
: 1;
839 unsigned int flag_vector
: 1;
840 unsigned int flag_stub_supported
: 1;
841 unsigned int flag_gnu_ifunc
: 1;
842 unsigned int flag_fixed_instance
: 1;
843 unsigned int flag_objfile_owned
: 1;
844 unsigned int flag_endianity_not_default
: 1;
846 /* * True if this type was declared with "class" rather than
849 unsigned int flag_declared_class
: 1;
851 /* * True if this is an enum type with disjoint values. This
852 affects how the enum is printed. */
854 unsigned int flag_flag_enum
: 1;
856 /* * A discriminant telling us which field of the type_specific
857 union is being used for this type, if any. */
859 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
861 /* * Number of fields described for this type. This field appears
862 at this location because it packs nicely here. */
866 /* * Name of this type, or NULL if none.
868 This is used for printing only. For looking up a name, look for
869 a symbol in the VAR_DOMAIN. This is generally allocated in the
870 objfile's obstack. However coffread.c uses malloc. */
874 /* * Every type is now associated with a particular objfile, and the
875 type is allocated on the objfile_obstack for that objfile. One
876 problem however, is that there are times when gdb allocates new
877 types while it is not in the process of reading symbols from a
878 particular objfile. Fortunately, these happen when the type
879 being created is a derived type of an existing type, such as in
880 lookup_pointer_type(). So we can just allocate the new type
881 using the same objfile as the existing type, but to do this we
882 need a backpointer to the objfile from the existing type. Yes
883 this is somewhat ugly, but without major overhaul of the internal
884 type system, it can't be avoided for now. */
886 union type_owner owner
;
888 /* * For a pointer type, describes the type of object pointed to.
889 - For an array type, describes the type of the elements.
890 - For a function or method type, describes the type of the return value.
891 - For a range type, describes the type of the full range.
892 - For a complex type, describes the type of each coordinate.
893 - For a special record or union type encoding a dynamic-sized type
894 in GNAT, a memoized pointer to a corresponding static version of
896 - Unused otherwise. */
898 struct type
*target_type
;
900 /* * For structure and union types, a description of each field.
901 For set and pascal array types, there is one "field",
902 whose type is the domain type of the set or array.
903 For range types, there are two "fields",
904 the minimum and maximum values (both inclusive).
905 For enum types, each possible value is described by one "field".
906 For a function or method type, a "field" for each parameter.
907 For C++ classes, there is one field for each base class (if it is
908 a derived class) plus one field for each class data member. Member
909 functions are recorded elsewhere.
911 Using a pointer to a separate array of fields
912 allows all types to have the same size, which is useful
913 because we can allocate the space for a type before
914 we know what to put in it. */
918 struct field
*fields
;
920 /* * Union member used for range types. */
922 struct range_bounds
*bounds
;
924 /* If this is a scalar type, then this is its corresponding
926 struct type
*complex_type
;
930 /* * Slot to point to additional language-specific fields of this
933 union type_specific type_specific
;
935 /* * Contains all dynamic type properties. */
936 struct dynamic_prop_list
*dyn_prop_list
;
939 /* * Number of bits allocated for alignment. */
941 #define TYPE_ALIGN_BITS 8
943 /* * A ``struct type'' describes a particular instance of a type, with
944 some particular qualification. */
948 /* Get the type code of this type.
950 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
951 type, you need to do `check_typedef (type)->code ()`. */
952 type_code
code () const
954 return this->main_type
->code
;
957 /* Set the type code of this type. */
958 void set_code (type_code code
)
960 this->main_type
->code
= code
;
963 /* Get the name of this type. */
964 const char *name () const
966 return this->main_type
->name
;
969 /* Set the name of this type. */
970 void set_name (const char *name
)
972 this->main_type
->name
= name
;
975 /* Get the number of fields of this type. */
976 int num_fields () const
978 return this->main_type
->nfields
;
981 /* Set the number of fields of this type. */
982 void set_num_fields (int num_fields
)
984 this->main_type
->nfields
= num_fields
;
987 /* Get the fields array of this type. */
988 struct field
*fields () const
990 return this->main_type
->flds_bnds
.fields
;
993 /* Get the field at index IDX. */
994 struct field
&field (int idx
) const
996 return this->fields ()[idx
];
999 /* Set the fields array of this type. */
1000 void set_fields (struct field
*fields
)
1002 this->main_type
->flds_bnds
.fields
= fields
;
1005 type
*index_type () const
1007 return this->field (0).type ();
1010 void set_index_type (type
*index_type
)
1012 this->field (0).set_type (index_type
);
1015 /* Get the bounds bounds of this type. The type must be a range type. */
1016 range_bounds
*bounds () const
1018 switch (this->code ())
1020 case TYPE_CODE_RANGE
:
1021 return this->main_type
->flds_bnds
.bounds
;
1023 case TYPE_CODE_ARRAY
:
1024 case TYPE_CODE_STRING
:
1025 return this->index_type ()->bounds ();
1028 gdb_assert_not_reached
1029 ("type::bounds called on type with invalid code");
1033 /* Set the bounds of this type. The type must be a range type. */
1034 void set_bounds (range_bounds
*bounds
)
1036 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1038 this->main_type
->flds_bnds
.bounds
= bounds
;
1041 ULONGEST
bit_stride () const
1043 return this->bounds ()->bit_stride ();
1046 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1047 the type is signed (unless TYPE_NOSIGN is set). */
1049 bool is_unsigned () const
1051 return this->main_type
->m_flag_unsigned
;
1054 void set_is_unsigned (bool is_unsigned
)
1056 this->main_type
->m_flag_unsigned
= is_unsigned
;
1059 /* No sign for this type. In C++, "char", "signed char", and
1060 "unsigned char" are distinct types; so we need an extra flag to
1061 indicate the absence of a sign! */
1063 bool has_no_signedness () const
1065 return this->main_type
->m_flag_nosign
;
1068 void set_has_no_signedness (bool has_no_signedness
)
1070 this->main_type
->m_flag_nosign
= has_no_signedness
;
1073 /* This appears in a type's flags word if it is a stub type (e.g.,
1074 if someone referenced a type that wasn't defined in a source file
1075 via (struct sir_not_appearing_in_this_film *)). */
1077 bool is_stub () const
1079 return this->main_type
->m_flag_stub
;
1082 void set_is_stub (bool is_stub
)
1084 this->main_type
->m_flag_stub
= is_stub
;
1087 /* The target type of this type is a stub type, and this type needs
1088 to be updated if it gets un-stubbed in check_typedef. Used for
1089 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
1090 based on the TYPE_LENGTH of the target type. Also, set for
1091 TYPE_CODE_TYPEDEF. */
1093 bool target_is_stub () const
1095 return this->main_type
->m_flag_target_stub
;
1098 void set_target_is_stub (bool target_is_stub
)
1100 this->main_type
->m_flag_target_stub
= target_is_stub
;
1103 bool is_prototyped () const
1105 return this->main_type
->m_flag_prototyped
;
1108 void set_is_prototyped (bool is_prototyped
)
1110 this->main_type
->m_flag_prototyped
= is_prototyped
;
1113 /* * Return the dynamic property of the requested KIND from this type's
1114 list of dynamic properties. */
1115 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1117 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1118 property to this type.
1120 This function assumes that this type is objfile-owned. */
1121 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1123 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1124 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1126 /* * Type that is a pointer to this type.
1127 NULL if no such pointer-to type is known yet.
1128 The debugger may add the address of such a type
1129 if it has to construct one later. */
1131 struct type
*pointer_type
;
1133 /* * C++: also need a reference type. */
1135 struct type
*reference_type
;
1137 /* * A C++ rvalue reference type added in C++11. */
1139 struct type
*rvalue_reference_type
;
1141 /* * Variant chain. This points to a type that differs from this
1142 one only in qualifiers and length. Currently, the possible
1143 qualifiers are const, volatile, code-space, data-space, and
1144 address class. The length may differ only when one of the
1145 address class flags are set. The variants are linked in a
1146 circular ring and share MAIN_TYPE. */
1150 /* * The alignment for this type. Zero means that the alignment was
1151 not specified in the debug info. Note that this is stored in a
1152 funny way: as the log base 2 (plus 1) of the alignment; so a
1153 value of 1 means the alignment is 1, and a value of 9 means the
1154 alignment is 256. */
1156 unsigned align_log2
: TYPE_ALIGN_BITS
;
1158 /* * Flags specific to this instance of the type, indicating where
1161 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1162 binary or-ed with the target type, with a special case for
1163 address class and space class. For example if this typedef does
1164 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1165 instance flags are completely inherited from the target type. No
1166 qualifiers can be cleared by the typedef. See also
1168 unsigned instance_flags
: 9;
1170 /* * Length of storage for a value of this type. The value is the
1171 expression in host bytes of what sizeof(type) would return. This
1172 size includes padding. For example, an i386 extended-precision
1173 floating point value really only occupies ten bytes, but most
1174 ABI's declare its size to be 12 bytes, to preserve alignment.
1175 A `struct type' representing such a floating-point type would
1176 have a `length' value of 12, even though the last two bytes are
1179 Since this field is expressed in host bytes, its value is appropriate
1180 to pass to memcpy and such (it is assumed that GDB itself always runs
1181 on an 8-bits addressable architecture). However, when using it for
1182 target address arithmetic (e.g. adding it to a target address), the
1183 type_length_units function should be used in order to get the length
1184 expressed in target addressable memory units. */
1188 /* * Core type, shared by a group of qualified types. */
1190 struct main_type
*main_type
;
1196 /* * The overloaded name.
1197 This is generally allocated in the objfile's obstack.
1198 However stabsread.c sometimes uses malloc. */
1202 /* * The number of methods with this name. */
1206 /* * The list of methods. */
1208 struct fn_field
*fn_fields
;
1215 /* * If is_stub is clear, this is the mangled name which we can look
1216 up to find the address of the method (FIXME: it would be cleaner
1217 to have a pointer to the struct symbol here instead).
1219 If is_stub is set, this is the portion of the mangled name which
1220 specifies the arguments. For example, "ii", if there are two int
1221 arguments, or "" if there are no arguments. See gdb_mangle_name
1222 for the conversion from this format to the one used if is_stub is
1225 const char *physname
;
1227 /* * The function type for the method.
1229 (This comment used to say "The return value of the method", but
1230 that's wrong. The function type is expected here, i.e. something
1231 with TYPE_CODE_METHOD, and *not* the return-value type). */
1235 /* * For virtual functions. First baseclass that defines this
1236 virtual function. */
1238 struct type
*fcontext
;
1242 unsigned int is_const
:1;
1243 unsigned int is_volatile
:1;
1244 unsigned int is_private
:1;
1245 unsigned int is_protected
:1;
1246 unsigned int is_artificial
:1;
1248 /* * A stub method only has some fields valid (but they are enough
1249 to reconstruct the rest of the fields). */
1251 unsigned int is_stub
:1;
1253 /* * True if this function is a constructor, false otherwise. */
1255 unsigned int is_constructor
: 1;
1257 /* * True if this function is deleted, false otherwise. */
1259 unsigned int is_deleted
: 1;
1261 /* * DW_AT_defaulted attribute for this function. The value is one
1262 of the DW_DEFAULTED constants. */
1264 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1268 unsigned int dummy
:6;
1270 /* * Index into that baseclass's virtual function table, minus 2;
1271 else if static: VOFFSET_STATIC; else: 0. */
1273 unsigned int voffset
:16;
1275 #define VOFFSET_STATIC 1
1281 /* * Unqualified name to be prefixed by owning class qualified
1286 /* * Type this typedef named NAME represents. */
1290 /* * True if this field was declared protected, false otherwise. */
1291 unsigned int is_protected
: 1;
1293 /* * True if this field was declared private, false otherwise. */
1294 unsigned int is_private
: 1;
1297 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1298 TYPE_CODE_UNION nodes. */
1300 struct cplus_struct_type
1302 /* * Number of base classes this type derives from. The
1303 baseclasses are stored in the first N_BASECLASSES fields
1304 (i.e. the `fields' field of the struct type). The only fields
1305 of struct field that are used are: type, name, loc.bitpos. */
1307 short n_baseclasses
;
1309 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1310 All access to this field must be through TYPE_VPTR_FIELDNO as one
1311 thing it does is check whether the field has been initialized.
1312 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1313 which for portability reasons doesn't initialize this field.
1314 TYPE_VPTR_FIELDNO returns -1 for this case.
1316 If -1, we were unable to find the virtual function table pointer in
1317 initial symbol reading, and get_vptr_fieldno should be called to find
1318 it if possible. get_vptr_fieldno will update this field if possible.
1319 Otherwise the value is left at -1.
1321 Unused if this type does not have virtual functions. */
1325 /* * Number of methods with unique names. All overloaded methods
1326 with the same name count only once. */
1330 /* * Number of template arguments. */
1332 unsigned short n_template_arguments
;
1334 /* * One if this struct is a dynamic class, as defined by the
1335 Itanium C++ ABI: if it requires a virtual table pointer,
1336 because it or any of its base classes have one or more virtual
1337 member functions or virtual base classes. Minus one if not
1338 dynamic. Zero if not yet computed. */
1342 /* * The calling convention for this type, fetched from the
1343 DW_AT_calling_convention attribute. The value is one of the
1346 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1348 /* * The base class which defined the virtual function table pointer. */
1350 struct type
*vptr_basetype
;
1352 /* * For derived classes, the number of base classes is given by
1353 n_baseclasses and virtual_field_bits is a bit vector containing
1354 one bit per base class. If the base class is virtual, the
1355 corresponding bit will be set.
1360 class C : public B, public virtual A {};
1362 B is a baseclass of C; A is a virtual baseclass for C.
1363 This is a C++ 2.0 language feature. */
1365 B_TYPE
*virtual_field_bits
;
1367 /* * For classes with private fields, the number of fields is
1368 given by nfields and private_field_bits is a bit vector
1369 containing one bit per field.
1371 If the field is private, the corresponding bit will be set. */
1373 B_TYPE
*private_field_bits
;
1375 /* * For classes with protected fields, the number of fields is
1376 given by nfields and protected_field_bits is a bit vector
1377 containing one bit per field.
1379 If the field is private, the corresponding bit will be set. */
1381 B_TYPE
*protected_field_bits
;
1383 /* * For classes with fields to be ignored, either this is
1384 optimized out or this field has length 0. */
1386 B_TYPE
*ignore_field_bits
;
1388 /* * For classes, structures, and unions, a description of each
1389 field, which consists of an overloaded name, followed by the
1390 types of arguments that the method expects, and then the name
1391 after it has been renamed to make it distinct.
1393 fn_fieldlists points to an array of nfn_fields of these. */
1395 struct fn_fieldlist
*fn_fieldlists
;
1397 /* * typedefs defined inside this class. typedef_field points to
1398 an array of typedef_field_count elements. */
1400 struct decl_field
*typedef_field
;
1402 unsigned typedef_field_count
;
1404 /* * The nested types defined by this type. nested_types points to
1405 an array of nested_types_count elements. */
1407 struct decl_field
*nested_types
;
1409 unsigned nested_types_count
;
1411 /* * The template arguments. This is an array with
1412 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1415 struct symbol
**template_arguments
;
1418 /* * Struct used to store conversion rankings. */
1424 /* * When two conversions are of the same type and therefore have
1425 the same rank, subrank is used to differentiate the two.
1427 Eg: Two derived-class-pointer to base-class-pointer conversions
1428 would both have base pointer conversion rank, but the
1429 conversion with the shorter distance to the ancestor is
1430 preferable. 'subrank' would be used to reflect that. */
1435 /* * Used for ranking a function for overload resolution. */
1437 typedef std::vector
<rank
> badness_vector
;
1439 /* * GNAT Ada-specific information for various Ada types. */
1441 struct gnat_aux_type
1443 /* * Parallel type used to encode information about dynamic types
1444 used in Ada (such as variant records, variable-size array,
1446 struct type
* descriptive_type
;
1449 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1453 /* * The calling convention for targets supporting multiple ABIs.
1454 Right now this is only fetched from the Dwarf-2
1455 DW_AT_calling_convention attribute. The value is one of the
1458 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1460 /* * Whether this function normally returns to its caller. It is
1461 set from the DW_AT_noreturn attribute if set on the
1462 DW_TAG_subprogram. */
1464 unsigned int is_noreturn
: 1;
1466 /* * Only those DW_TAG_call_site's in this function that have
1467 DW_AT_call_tail_call set are linked in this list. Function
1468 without its tail call list complete
1469 (DW_AT_call_all_tail_calls or its superset
1470 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1471 DW_TAG_call_site's exist in such function. */
1473 struct call_site
*tail_call_list
;
1475 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1476 contains the method. */
1478 struct type
*self_type
;
1481 /* struct call_site_parameter can be referenced in callees by several ways. */
1483 enum call_site_parameter_kind
1485 /* * Use field call_site_parameter.u.dwarf_reg. */
1486 CALL_SITE_PARAMETER_DWARF_REG
,
1488 /* * Use field call_site_parameter.u.fb_offset. */
1489 CALL_SITE_PARAMETER_FB_OFFSET
,
1491 /* * Use field call_site_parameter.u.param_offset. */
1492 CALL_SITE_PARAMETER_PARAM_OFFSET
1495 struct call_site_target
1497 union field_location loc
;
1499 /* * Discriminant for union field_location. */
1501 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1504 union call_site_parameter_u
1506 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1507 as DWARF register number, for register passed
1512 /* * Offset from the callee's frame base, for stack passed
1513 parameters. This equals offset from the caller's stack
1516 CORE_ADDR fb_offset
;
1518 /* * Offset relative to the start of this PER_CU to
1519 DW_TAG_formal_parameter which is referenced by both
1520 caller and the callee. */
1522 cu_offset param_cu_off
;
1525 struct call_site_parameter
1527 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1529 union call_site_parameter_u u
;
1531 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1533 const gdb_byte
*value
;
1536 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1537 It may be NULL if not provided by DWARF. */
1539 const gdb_byte
*data_value
;
1540 size_t data_value_size
;
1543 /* * A place where a function gets called from, represented by
1544 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1548 /* * Address of the first instruction after this call. It must be
1549 the first field as we overload core_addr_hash and core_addr_eq
1554 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1556 struct call_site
*tail_call_next
;
1558 /* * Describe DW_AT_call_target. Missing attribute uses
1559 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1561 struct call_site_target target
;
1563 /* * Size of the PARAMETER array. */
1565 unsigned parameter_count
;
1567 /* * CU of the function where the call is located. It gets used
1568 for DWARF blocks execution in the parameter array below. */
1570 dwarf2_per_cu_data
*per_cu
;
1572 /* objfile of the function where the call is located. */
1574 dwarf2_per_objfile
*per_objfile
;
1576 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1578 struct call_site_parameter parameter
[1];
1581 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1582 static structure. */
1584 extern const struct cplus_struct_type cplus_struct_default
;
1586 extern void allocate_cplus_struct_type (struct type
*);
1588 #define INIT_CPLUS_SPECIFIC(type) \
1589 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1590 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1591 &cplus_struct_default)
1593 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1595 #define HAVE_CPLUS_STRUCT(type) \
1596 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1597 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1599 #define INIT_NONE_SPECIFIC(type) \
1600 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1601 TYPE_MAIN_TYPE (type)->type_specific = {})
1603 extern const struct gnat_aux_type gnat_aux_default
;
1605 extern void allocate_gnat_aux_type (struct type
*);
1607 #define INIT_GNAT_SPECIFIC(type) \
1608 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1609 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1610 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1611 /* * A macro that returns non-zero if the type-specific data should be
1612 read as "gnat-stuff". */
1613 #define HAVE_GNAT_AUX_INFO(type) \
1614 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1616 /* * True if TYPE is known to be an Ada type of some kind. */
1617 #define ADA_TYPE_P(type) \
1618 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1619 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1620 && TYPE_FIXED_INSTANCE (type)))
1622 #define INIT_FUNC_SPECIFIC(type) \
1623 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1624 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1625 TYPE_ZALLOC (type, \
1626 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1628 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1629 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1630 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1631 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1632 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1633 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1634 #define TYPE_CHAIN(thistype) (thistype)->chain
1635 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1636 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1637 so you only have to call check_typedef once. Since allocate_value
1638 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1639 #define TYPE_LENGTH(thistype) (thistype)->length
1641 /* * Return the alignment of the type in target addressable memory
1642 units, or 0 if no alignment was specified. */
1643 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1645 /* * Return the alignment of the type in target addressable memory
1646 units, or 0 if no alignment was specified. */
1647 extern unsigned type_raw_align (struct type
*);
1649 /* * Return the alignment of the type in target addressable memory
1650 units. Return 0 if the alignment cannot be determined; but note
1651 that this makes an effort to compute the alignment even it it was
1652 not specified in the debug info. */
1653 extern unsigned type_align (struct type
*);
1655 /* * Set the alignment of the type. The alignment must be a power of
1656 2. Returns false if the given value does not fit in the available
1657 space in struct type. */
1658 extern bool set_type_align (struct type
*, ULONGEST
);
1660 /* Property accessors for the type data location. */
1661 #define TYPE_DATA_LOCATION(thistype) \
1662 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1663 #define TYPE_DATA_LOCATION_BATON(thistype) \
1664 TYPE_DATA_LOCATION (thistype)->data.baton
1665 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1666 (TYPE_DATA_LOCATION (thistype)->const_val ())
1667 #define TYPE_DATA_LOCATION_KIND(thistype) \
1668 (TYPE_DATA_LOCATION (thistype)->kind ())
1669 #define TYPE_DYNAMIC_LENGTH(thistype) \
1670 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1672 /* Property accessors for the type allocated/associated. */
1673 #define TYPE_ALLOCATED_PROP(thistype) \
1674 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1675 #define TYPE_ASSOCIATED_PROP(thistype) \
1676 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1680 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1681 /* Do not call this, use TYPE_SELF_TYPE. */
1682 extern struct type
*internal_type_self_type (struct type
*);
1683 extern void set_type_self_type (struct type
*, struct type
*);
1685 extern int internal_type_vptr_fieldno (struct type
*);
1686 extern void set_type_vptr_fieldno (struct type
*, int);
1687 extern struct type
*internal_type_vptr_basetype (struct type
*);
1688 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1689 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1690 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1692 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1693 #define TYPE_SPECIFIC_FIELD(thistype) \
1694 TYPE_MAIN_TYPE(thistype)->type_specific_field
1695 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1696 where we're trying to print an Ada array using the C language.
1697 In that case, there is no "cplus_stuff", but the C language assumes
1698 that there is. What we do, in that case, is pretend that there is
1699 an implicit one which is the default cplus stuff. */
1700 #define TYPE_CPLUS_SPECIFIC(thistype) \
1701 (!HAVE_CPLUS_STRUCT(thistype) \
1702 ? (struct cplus_struct_type*)&cplus_struct_default \
1703 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1704 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1705 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1706 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1707 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1708 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1709 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1710 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1711 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1712 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1713 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1714 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1715 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1716 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1717 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1718 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1719 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1721 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1722 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1723 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1725 #define FIELD_NAME(thisfld) ((thisfld).name)
1726 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1727 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1728 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1729 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1730 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1731 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1732 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1733 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1734 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1735 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1736 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1737 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1738 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1739 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1740 #define SET_FIELD_PHYSNAME(thisfld, name) \
1741 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1742 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1743 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1744 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1745 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1746 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1747 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1748 FIELD_DWARF_BLOCK (thisfld) = (addr))
1749 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1750 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1752 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1753 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1754 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1755 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1756 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1757 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1758 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1759 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1760 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1761 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1763 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1764 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1765 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1766 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1767 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1768 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1769 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1770 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1771 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1772 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1773 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1774 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1775 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1776 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1777 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1778 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1779 #define TYPE_FIELD_PRIVATE(thistype, n) \
1780 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1781 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1782 #define TYPE_FIELD_PROTECTED(thistype, n) \
1783 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1784 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1785 #define TYPE_FIELD_IGNORE(thistype, n) \
1786 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1787 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1788 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1789 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1790 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1792 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1793 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1794 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1795 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1796 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1798 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1799 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1800 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1801 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1802 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1803 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1805 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1806 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1807 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1808 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1809 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1810 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1811 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1812 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1813 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1814 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1815 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1816 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1817 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1818 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1819 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1820 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1821 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1823 /* Accessors for typedefs defined by a class. */
1824 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1825 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1826 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1827 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1828 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1829 TYPE_TYPEDEF_FIELD (thistype, n).name
1830 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1831 TYPE_TYPEDEF_FIELD (thistype, n).type
1832 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1833 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1834 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1835 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1836 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1837 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1839 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1840 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1841 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1842 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1843 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1844 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1845 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1846 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1847 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1848 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1849 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1850 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1851 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1852 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1854 #define TYPE_IS_OPAQUE(thistype) \
1855 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1856 || ((thistype)->code () == TYPE_CODE_UNION)) \
1857 && ((thistype)->num_fields () == 0) \
1858 && (!HAVE_CPLUS_STRUCT (thistype) \
1859 || TYPE_NFN_FIELDS (thistype) == 0) \
1860 && ((thistype)->is_stub () || !TYPE_STUB_SUPPORTED (thistype)))
1862 /* * A helper macro that returns the name of a type or "unnamed type"
1863 if the type has no name. */
1865 #define TYPE_SAFE_NAME(type) \
1866 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1868 /* * A helper macro that returns the name of an error type. If the
1869 type has a name, it is used; otherwise, a default is used. */
1871 #define TYPE_ERROR_NAME(type) \
1872 (type->name () ? type->name () : _("<error type>"))
1874 /* Given TYPE, return its floatformat. */
1875 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1879 /* Integral types. */
1881 /* Implicit size/sign (based on the architecture's ABI). */
1882 struct type
*builtin_void
;
1883 struct type
*builtin_char
;
1884 struct type
*builtin_short
;
1885 struct type
*builtin_int
;
1886 struct type
*builtin_long
;
1887 struct type
*builtin_signed_char
;
1888 struct type
*builtin_unsigned_char
;
1889 struct type
*builtin_unsigned_short
;
1890 struct type
*builtin_unsigned_int
;
1891 struct type
*builtin_unsigned_long
;
1892 struct type
*builtin_bfloat16
;
1893 struct type
*builtin_half
;
1894 struct type
*builtin_float
;
1895 struct type
*builtin_double
;
1896 struct type
*builtin_long_double
;
1897 struct type
*builtin_complex
;
1898 struct type
*builtin_double_complex
;
1899 struct type
*builtin_string
;
1900 struct type
*builtin_bool
;
1901 struct type
*builtin_long_long
;
1902 struct type
*builtin_unsigned_long_long
;
1903 struct type
*builtin_decfloat
;
1904 struct type
*builtin_decdouble
;
1905 struct type
*builtin_declong
;
1907 /* "True" character types.
1908 We use these for the '/c' print format, because c_char is just a
1909 one-byte integral type, which languages less laid back than C
1910 will print as ... well, a one-byte integral type. */
1911 struct type
*builtin_true_char
;
1912 struct type
*builtin_true_unsigned_char
;
1914 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1915 is for when an architecture needs to describe a register that has
1917 struct type
*builtin_int0
;
1918 struct type
*builtin_int8
;
1919 struct type
*builtin_uint8
;
1920 struct type
*builtin_int16
;
1921 struct type
*builtin_uint16
;
1922 struct type
*builtin_int24
;
1923 struct type
*builtin_uint24
;
1924 struct type
*builtin_int32
;
1925 struct type
*builtin_uint32
;
1926 struct type
*builtin_int64
;
1927 struct type
*builtin_uint64
;
1928 struct type
*builtin_int128
;
1929 struct type
*builtin_uint128
;
1931 /* Wide character types. */
1932 struct type
*builtin_char16
;
1933 struct type
*builtin_char32
;
1934 struct type
*builtin_wchar
;
1936 /* Pointer types. */
1938 /* * `pointer to data' type. Some target platforms use an implicitly
1939 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1940 struct type
*builtin_data_ptr
;
1942 /* * `pointer to function (returning void)' type. Harvard
1943 architectures mean that ABI function and code pointers are not
1944 interconvertible. Similarly, since ANSI, C standards have
1945 explicitly said that pointers to functions and pointers to data
1946 are not interconvertible --- that is, you can't cast a function
1947 pointer to void * and back, and expect to get the same value.
1948 However, all function pointer types are interconvertible, so void
1949 (*) () can server as a generic function pointer. */
1951 struct type
*builtin_func_ptr
;
1953 /* * `function returning pointer to function (returning void)' type.
1954 The final void return type is not significant for it. */
1956 struct type
*builtin_func_func
;
1958 /* Special-purpose types. */
1960 /* * This type is used to represent a GDB internal function. */
1962 struct type
*internal_fn
;
1964 /* * This type is used to represent an xmethod. */
1965 struct type
*xmethod
;
1968 /* * Return the type table for the specified architecture. */
1970 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1972 /* * Per-objfile types used by symbol readers. */
1976 /* Basic types based on the objfile architecture. */
1977 struct type
*builtin_void
;
1978 struct type
*builtin_char
;
1979 struct type
*builtin_short
;
1980 struct type
*builtin_int
;
1981 struct type
*builtin_long
;
1982 struct type
*builtin_long_long
;
1983 struct type
*builtin_signed_char
;
1984 struct type
*builtin_unsigned_char
;
1985 struct type
*builtin_unsigned_short
;
1986 struct type
*builtin_unsigned_int
;
1987 struct type
*builtin_unsigned_long
;
1988 struct type
*builtin_unsigned_long_long
;
1989 struct type
*builtin_half
;
1990 struct type
*builtin_float
;
1991 struct type
*builtin_double
;
1992 struct type
*builtin_long_double
;
1994 /* * This type is used to represent symbol addresses. */
1995 struct type
*builtin_core_addr
;
1997 /* * This type represents a type that was unrecognized in symbol
1999 struct type
*builtin_error
;
2001 /* * Types used for symbols with no debug information. */
2002 struct type
*nodebug_text_symbol
;
2003 struct type
*nodebug_text_gnu_ifunc_symbol
;
2004 struct type
*nodebug_got_plt_symbol
;
2005 struct type
*nodebug_data_symbol
;
2006 struct type
*nodebug_unknown_symbol
;
2007 struct type
*nodebug_tls_symbol
;
2010 /* * Return the type table for the specified objfile. */
2012 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
2014 /* Explicit floating-point formats. See "floatformat.h". */
2015 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
2016 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
2017 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2018 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2019 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2020 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2021 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2022 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2023 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2024 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2025 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2026 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2027 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2029 /* Allocate space for storing data associated with a particular
2030 type. We ensure that the space is allocated using the same
2031 mechanism that was used to allocate the space for the type
2032 structure itself. I.e. if the type is on an objfile's
2033 objfile_obstack, then the space for data associated with that type
2034 will also be allocated on the objfile_obstack. If the type is
2035 associated with a gdbarch, then the space for data associated with that
2036 type will also be allocated on the gdbarch_obstack.
2038 If a type is not associated with neither an objfile or a gdbarch then
2039 you should not use this macro to allocate space for data, instead you
2040 should call xmalloc directly, and ensure the memory is correctly freed
2041 when it is no longer needed. */
2043 #define TYPE_ALLOC(t,size) \
2044 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2045 ? &TYPE_OBJFILE (t)->objfile_obstack \
2046 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2050 /* See comment on TYPE_ALLOC. */
2052 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2054 /* Use alloc_type to allocate a type owned by an objfile. Use
2055 alloc_type_arch to allocate a type owned by an architecture. Use
2056 alloc_type_copy to allocate a type with the same owner as a
2057 pre-existing template type, no matter whether objfile or
2059 extern struct type
*alloc_type (struct objfile
*);
2060 extern struct type
*alloc_type_arch (struct gdbarch
*);
2061 extern struct type
*alloc_type_copy (const struct type
*);
2063 /* * Return the type's architecture. For types owned by an
2064 architecture, that architecture is returned. For types owned by an
2065 objfile, that objfile's architecture is returned. */
2067 extern struct gdbarch
*get_type_arch (const struct type
*);
2069 /* * This returns the target type (or NULL) of TYPE, also skipping
2072 extern struct type
*get_target_type (struct type
*type
);
2074 /* Return the equivalent of TYPE_LENGTH, but in number of target
2075 addressable memory units of the associated gdbarch instead of bytes. */
2077 extern unsigned int type_length_units (struct type
*type
);
2079 /* * Helper function to construct objfile-owned types. */
2081 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2083 extern struct type
*init_integer_type (struct objfile
*, int, int,
2085 extern struct type
*init_character_type (struct objfile
*, int, int,
2087 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2089 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2090 const struct floatformat
**,
2091 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2092 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2093 extern struct type
*init_complex_type (const char *, struct type
*);
2094 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2097 /* Helper functions to construct architecture-owned types. */
2098 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2100 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2102 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2104 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2106 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2107 const struct floatformat
**);
2108 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2109 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2112 /* Helper functions to construct a struct or record type. An
2113 initially empty type is created using arch_composite_type().
2114 Fields are then added using append_composite_type_field*(). A union
2115 type has its size set to the largest field. A struct type has each
2116 field packed against the previous. */
2118 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2119 const char *name
, enum type_code code
);
2120 extern void append_composite_type_field (struct type
*t
, const char *name
,
2121 struct type
*field
);
2122 extern void append_composite_type_field_aligned (struct type
*t
,
2126 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2127 struct type
*field
);
2129 /* Helper functions to construct a bit flags type. An initially empty
2130 type is created using arch_flag_type(). Flags are then added using
2131 append_flag_type_field() and append_flag_type_flag(). */
2132 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2133 const char *name
, int bit
);
2134 extern void append_flags_type_field (struct type
*type
,
2135 int start_bitpos
, int nr_bits
,
2136 struct type
*field_type
, const char *name
);
2137 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2140 extern void make_vector_type (struct type
*array_type
);
2141 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2143 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2144 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2145 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2148 extern struct type
*make_reference_type (struct type
*, struct type
**,
2151 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2153 extern struct type
*make_restrict_type (struct type
*);
2155 extern struct type
*make_unqualified_type (struct type
*);
2157 extern struct type
*make_atomic_type (struct type
*);
2159 extern void replace_type (struct type
*, struct type
*);
2161 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2163 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2165 extern struct type
*make_type_with_address_space (struct type
*type
,
2166 int space_identifier
);
2168 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2170 extern struct type
*lookup_methodptr_type (struct type
*);
2172 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2173 struct type
*to_type
, struct field
*args
,
2174 int nargs
, int varargs
);
2176 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2179 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2181 extern struct type
*allocate_stub_method (struct type
*);
2183 extern const char *type_name_or_error (struct type
*type
);
2187 /* The field of the element, or NULL if no element was found. */
2188 struct field
*field
;
2190 /* The bit offset of the element in the parent structure. */
2194 /* Given a type TYPE, lookup the field and offset of the component named
2197 TYPE can be either a struct or union, or a pointer or reference to
2198 a struct or union. If it is a pointer or reference, its target
2199 type is automatically used. Thus '.' and '->' are interchangable,
2200 as specified for the definitions of the expression element types
2201 STRUCTOP_STRUCT and STRUCTOP_PTR.
2203 If NOERR is nonzero, the returned structure will have field set to
2204 NULL if there is no component named NAME.
2206 If the component NAME is a field in an anonymous substructure of
2207 TYPE, the returned offset is a "global" offset relative to TYPE
2208 rather than an offset within the substructure. */
2210 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2212 /* Given a type TYPE, lookup the type of the component named NAME.
2214 TYPE can be either a struct or union, or a pointer or reference to
2215 a struct or union. If it is a pointer or reference, its target
2216 type is automatically used. Thus '.' and '->' are interchangable,
2217 as specified for the definitions of the expression element types
2218 STRUCTOP_STRUCT and STRUCTOP_PTR.
2220 If NOERR is nonzero, return NULL if there is no component named
2223 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2225 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2227 extern struct type
*lookup_pointer_type (struct type
*);
2229 extern struct type
*make_function_type (struct type
*, struct type
**);
2231 extern struct type
*lookup_function_type (struct type
*);
2233 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2237 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2241 extern struct type
*create_array_type_with_stride
2242 (struct type
*, struct type
*, struct type
*,
2243 struct dynamic_prop
*, unsigned int);
2245 extern struct type
*create_range_type (struct type
*, struct type
*,
2246 const struct dynamic_prop
*,
2247 const struct dynamic_prop
*,
2250 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2251 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2254 extern struct type
* create_range_type_with_stride
2255 (struct type
*result_type
, struct type
*index_type
,
2256 const struct dynamic_prop
*low_bound
,
2257 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2258 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2260 extern struct type
*create_array_type (struct type
*, struct type
*,
2263 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2265 extern struct type
*create_string_type (struct type
*, struct type
*,
2267 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2269 extern struct type
*create_set_type (struct type
*, struct type
*);
2271 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2274 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2277 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2279 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2281 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2282 ADDR specifies the location of the variable the type is bound to.
2283 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2284 static properties is returned. */
2285 extern struct type
*resolve_dynamic_type
2286 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2289 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2290 extern int is_dynamic_type (struct type
*type
);
2292 extern struct type
*check_typedef (struct type
*);
2294 extern void check_stub_method_group (struct type
*, int);
2296 extern char *gdb_mangle_name (struct type
*, int, int);
2298 extern struct type
*lookup_typename (const struct language_defn
*,
2299 const char *, const struct block
*, int);
2301 extern struct type
*lookup_template_type (const char *, struct type
*,
2302 const struct block
*);
2304 extern int get_vptr_fieldno (struct type
*, struct type
**);
2306 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2308 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2309 LONGEST
*high_bound
);
2311 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2313 extern int class_types_same_p (const struct type
*, const struct type
*);
2315 extern int is_ancestor (struct type
*, struct type
*);
2317 extern int is_public_ancestor (struct type
*, struct type
*);
2319 extern int is_unique_ancestor (struct type
*, struct value
*);
2321 /* Overload resolution */
2323 /* * Badness if parameter list length doesn't match arg list length. */
2324 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2326 /* * Dummy badness value for nonexistent parameter positions. */
2327 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2328 /* * Badness if no conversion among types. */
2329 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2331 /* * Badness of an exact match. */
2332 extern const struct rank EXACT_MATCH_BADNESS
;
2334 /* * Badness of integral promotion. */
2335 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2336 /* * Badness of floating promotion. */
2337 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2338 /* * Badness of converting a derived class pointer
2339 to a base class pointer. */
2340 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2341 /* * Badness of integral conversion. */
2342 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2343 /* * Badness of floating conversion. */
2344 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2345 /* * Badness of integer<->floating conversions. */
2346 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2347 /* * Badness of conversion of pointer to void pointer. */
2348 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2349 /* * Badness of conversion to boolean. */
2350 extern const struct rank BOOL_CONVERSION_BADNESS
;
2351 /* * Badness of converting derived to base class. */
2352 extern const struct rank BASE_CONVERSION_BADNESS
;
2353 /* * Badness of converting from non-reference to reference. Subrank
2354 is the type of reference conversion being done. */
2355 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2356 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2357 /* * Conversion to rvalue reference. */
2358 #define REFERENCE_CONVERSION_RVALUE 1
2359 /* * Conversion to const lvalue reference. */
2360 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2362 /* * Badness of converting integer 0 to NULL pointer. */
2363 extern const struct rank NULL_POINTER_CONVERSION
;
2364 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2366 extern const struct rank CV_CONVERSION_BADNESS
;
2367 #define CV_CONVERSION_CONST 1
2368 #define CV_CONVERSION_VOLATILE 2
2370 /* Non-standard conversions allowed by the debugger */
2372 /* * Converting a pointer to an int is usually OK. */
2373 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2375 /* * Badness of converting a (non-zero) integer constant
2377 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2379 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2380 extern int compare_ranks (struct rank a
, struct rank b
);
2382 extern int compare_badness (const badness_vector
&,
2383 const badness_vector
&);
2385 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2386 gdb::array_view
<value
*> args
);
2388 extern struct rank
rank_one_type (struct type
*, struct type
*,
2391 extern void recursive_dump_type (struct type
*, int);
2393 extern int field_is_static (struct field
*);
2397 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2398 const struct value_print_options
*,
2399 int, struct ui_file
*);
2401 extern int can_dereference (struct type
*);
2403 extern int is_integral_type (struct type
*);
2405 extern int is_floating_type (struct type
*);
2407 extern int is_scalar_type (struct type
*type
);
2409 extern int is_scalar_type_recursive (struct type
*);
2411 extern int class_or_union_p (const struct type
*);
2413 extern void maintenance_print_type (const char *, int);
2415 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2417 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2419 htab_t copied_types
);
2421 extern struct type
*copy_type (const struct type
*type
);
2423 extern bool types_equal (struct type
*, struct type
*);
2425 extern bool types_deeply_equal (struct type
*, struct type
*);
2427 extern int type_not_allocated (const struct type
*type
);
2429 extern int type_not_associated (const struct type
*type
);
2431 /* * When the type includes explicit byte ordering, return that.
2432 Otherwise, the byte ordering from gdbarch_byte_order for
2433 get_type_arch is returned. */
2435 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2437 /* A flag to enable printing of debugging information of C++
2440 extern unsigned int overload_debug
;
2442 #endif /* GDBTYPES_H */