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 /* * The debugging formats (especially STABS) do not contain enough
220 information to represent all Ada types---especially those whose
221 size depends on dynamic quantities. Therefore, the GNAT Ada
222 compiler includes extra information in the form of additional type
223 definitions connected by naming conventions. This flag indicates
224 that the type is an ordinary (unencoded) GDB type that has been
225 created from the necessary run-time information, and does not need
226 further interpretation. Optionally marks ordinary, fixed-size GDB
229 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
231 /* * Not textual. By default, GDB treats all single byte integers as
232 characters (or elements of strings) unless this flag is set. */
234 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
236 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
237 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
238 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
240 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
241 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
242 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
244 /* * True if this type was declared using the "class" keyword. This is
245 only valid for C++ structure and enum types. If false, a structure
246 was declared as a "struct"; if true it was declared "class". For
247 enum types, this is true when "enum class" or "enum struct" was
248 used to declare the type.. */
250 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
252 /* * True if this type is a "flag" enum. A flag enum is one where all
253 the values are pairwise disjoint when "and"ed together. This
254 affects how enum values are printed. */
256 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
258 /* * Constant type. If this is set, the corresponding type has a
261 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
263 /* * Volatile type. If this is set, the corresponding type has a
264 volatile modifier. */
266 #define TYPE_VOLATILE(t) \
267 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
269 /* * Restrict type. If this is set, the corresponding type has a
270 restrict modifier. */
272 #define TYPE_RESTRICT(t) \
273 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
275 /* * Atomic type. If this is set, the corresponding type has an
278 #define TYPE_ATOMIC(t) \
279 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
281 /* * True if this type represents either an lvalue or lvalue reference type. */
283 #define TYPE_IS_REFERENCE(t) \
284 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
286 /* * True if this type is allocatable. */
287 #define TYPE_IS_ALLOCATABLE(t) \
288 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
290 /* * True if this type has variant parts. */
291 #define TYPE_HAS_VARIANT_PARTS(t) \
292 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
294 /* * True if this type has a dynamic length. */
295 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
296 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
298 /* * Instruction-space delimited type. This is for Harvard architectures
299 which have separate instruction and data address spaces (and perhaps
302 GDB usually defines a flat address space that is a superset of the
303 architecture's two (or more) address spaces, but this is an extension
304 of the architecture's model.
306 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
307 resides in instruction memory, even if its address (in the extended
308 flat address space) does not reflect this.
310 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
311 corresponding type resides in the data memory space, even if
312 this is not indicated by its (flat address space) address.
314 If neither flag is set, the default space for functions / methods
315 is instruction space, and for data objects is data memory. */
317 #define TYPE_CODE_SPACE(t) \
318 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
320 #define TYPE_DATA_SPACE(t) \
321 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
323 /* * Address class flags. Some environments provide for pointers
324 whose size is different from that of a normal pointer or address
325 types where the bits are interpreted differently than normal
326 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
327 target specific ways to represent these different types of address
330 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
331 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
332 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
333 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
334 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
335 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
336 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
337 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
339 /* * Information about a single discriminant. */
341 struct discriminant_range
343 /* * The range of values for the variant. This is an inclusive
347 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
348 is true if this should be an unsigned comparison; false for
350 bool contains (ULONGEST value
, bool is_unsigned
) const
353 return value
>= low
&& value
<= high
;
354 LONGEST valuel
= (LONGEST
) value
;
355 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
361 /* * A single variant. A variant has a list of discriminant values.
362 When the discriminator matches one of these, the variant is
363 enabled. Each variant controls zero or more fields; and may also
364 control other variant parts as well. This struct corresponds to
365 DW_TAG_variant in DWARF. */
367 struct variant
: allocate_on_obstack
369 /* * The discriminant ranges for this variant. */
370 gdb::array_view
<discriminant_range
> discriminants
;
372 /* * The fields controlled by this variant. This is inclusive on
373 the low end and exclusive on the high end. A variant may not
374 control any fields, in which case the two values will be equal.
375 These are indexes into the type's array of fields. */
379 /* * Variant parts controlled by this variant. */
380 gdb::array_view
<variant_part
> parts
;
382 /* * Return true if this is the default variant. The default
383 variant can be recognized because it has no associated
385 bool is_default () const
387 return discriminants
.empty ();
390 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
391 if this should be an unsigned comparison; false for signed. */
392 bool matches (ULONGEST value
, bool is_unsigned
) const;
395 /* * A variant part. Each variant part has an optional discriminant
396 and holds an array of variants. This struct corresponds to
397 DW_TAG_variant_part in DWARF. */
399 struct variant_part
: allocate_on_obstack
401 /* * The index of the discriminant field in the outer type. This is
402 an index into the type's array of fields. If this is -1, there
403 is no discriminant, and only the default variant can be
404 considered to be selected. */
405 int discriminant_index
;
407 /* * True if this discriminant is unsigned; false if signed. This
408 comes from the type of the discriminant. */
411 /* * The variants that are controlled by this variant part. Note
412 that these will always be sorted by field number. */
413 gdb::array_view
<variant
> variants
;
417 enum dynamic_prop_kind
419 PROP_UNDEFINED
, /* Not defined. */
420 PROP_CONST
, /* Constant. */
421 PROP_ADDR_OFFSET
, /* Address offset. */
422 PROP_LOCEXPR
, /* Location expression. */
423 PROP_LOCLIST
, /* Location list. */
424 PROP_VARIANT_PARTS
, /* Variant parts. */
425 PROP_TYPE
, /* Type. */
428 union dynamic_prop_data
430 /* Storage for constant property. */
434 /* Storage for dynamic property. */
438 /* Storage of variant parts for a type. A type with variant parts
439 has all its fields "linearized" -- stored in a single field
440 array, just as if they had all been declared that way. The
441 variant parts are attached via a dynamic property, and then are
442 used to control which fields end up in the final type during
443 dynamic type resolution. */
445 const gdb::array_view
<variant_part
> *variant_parts
;
447 /* Once a variant type is resolved, we may want to be able to go
448 from the resolved type to the original type. In this case we
449 rewrite the property's kind and set this field. */
451 struct type
*original_type
;
454 /* * Used to store a dynamic property. */
458 dynamic_prop_kind
kind () const
463 void set_undefined ()
465 m_kind
= PROP_UNDEFINED
;
468 LONGEST
const_val () const
470 gdb_assert (m_kind
== PROP_CONST
);
472 return m_data
.const_val
;
475 void set_const_val (LONGEST const_val
)
478 m_data
.const_val
= const_val
;
483 gdb_assert (m_kind
== PROP_LOCEXPR
484 || m_kind
== PROP_LOCLIST
485 || m_kind
== PROP_ADDR_OFFSET
);
490 void set_locexpr (void *baton
)
492 m_kind
= PROP_LOCEXPR
;
493 m_data
.baton
= baton
;
496 void set_loclist (void *baton
)
498 m_kind
= PROP_LOCLIST
;
499 m_data
.baton
= baton
;
502 void set_addr_offset (void *baton
)
504 m_kind
= PROP_ADDR_OFFSET
;
505 m_data
.baton
= baton
;
508 const gdb::array_view
<variant_part
> *variant_parts () const
510 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
512 return m_data
.variant_parts
;
515 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
517 m_kind
= PROP_VARIANT_PARTS
;
518 m_data
.variant_parts
= variant_parts
;
521 struct type
*original_type () const
523 gdb_assert (m_kind
== PROP_TYPE
);
525 return m_data
.original_type
;
528 void set_original_type (struct type
*original_type
)
531 m_data
.original_type
= original_type
;
534 /* Determine which field of the union dynamic_prop.data is used. */
535 enum dynamic_prop_kind m_kind
;
537 /* Storage for dynamic or static value. */
538 union dynamic_prop_data m_data
;
541 /* Compare two dynamic_prop objects for equality. dynamic_prop
542 instances are equal iff they have the same type and storage. */
543 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
545 /* Compare two dynamic_prop objects for inequality. */
546 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
551 /* * Define a type's dynamic property node kind. */
552 enum dynamic_prop_node_kind
554 /* A property providing a type's data location.
555 Evaluating this field yields to the location of an object's data. */
556 DYN_PROP_DATA_LOCATION
,
558 /* A property representing DW_AT_allocated. The presence of this attribute
559 indicates that the object of the type can be allocated/deallocated. */
562 /* A property representing DW_AT_associated. The presence of this attribute
563 indicated that the object of the type can be associated. */
566 /* A property providing an array's byte stride. */
567 DYN_PROP_BYTE_STRIDE
,
569 /* A property holding variant parts. */
570 DYN_PROP_VARIANT_PARTS
,
572 /* A property holding the size of the type. */
576 /* * List for dynamic type attributes. */
577 struct dynamic_prop_list
579 /* The kind of dynamic prop in this node. */
580 enum dynamic_prop_node_kind prop_kind
;
582 /* The dynamic property itself. */
583 struct dynamic_prop prop
;
585 /* A pointer to the next dynamic property. */
586 struct dynamic_prop_list
*next
;
589 /* * Determine which field of the union main_type.fields[x].loc is
594 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
595 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
596 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
597 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
598 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
601 /* * A discriminant to determine which field in the
602 main_type.type_specific union is being used, if any.
604 For types such as TYPE_CODE_FLT, the use of this
605 discriminant is really redundant, as we know from the type code
606 which field is going to be used. As such, it would be possible to
607 reduce the size of this enum in order to save a bit or two for
608 other fields of struct main_type. But, since we still have extra
609 room , and for the sake of clarity and consistency, we treat all fields
610 of the union the same way. */
612 enum type_specific_kind
615 TYPE_SPECIFIC_CPLUS_STUFF
,
616 TYPE_SPECIFIC_GNAT_STUFF
,
617 TYPE_SPECIFIC_FLOATFORMAT
,
618 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
620 TYPE_SPECIFIC_SELF_TYPE
625 struct objfile
*objfile
;
626 struct gdbarch
*gdbarch
;
631 /* * Position of this field, counting in bits from start of
632 containing structure. For big-endian targets, it is the bit
633 offset to the MSB. For little-endian targets, it is the bit
634 offset to the LSB. */
641 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
642 physaddr is the location (in the target) of the static
643 field. Otherwise, physname is the mangled label of the
647 const char *physname
;
649 /* * The field location can be computed by evaluating the
650 following DWARF block. Its DATA is allocated on
651 objfile_obstack - no CU load is needed to access it. */
653 struct dwarf2_locexpr_baton
*dwarf_block
;
658 struct type
*type () const
663 void set_type (struct type
*type
)
668 union field_location loc
;
670 /* * For a function or member type, this is 1 if the argument is
671 marked artificial. Artificial arguments should not be shown
672 to the user. For TYPE_CODE_RANGE it is set if the specific
673 bound is not defined. */
675 unsigned int artificial
: 1;
677 /* * Discriminant for union field_location. */
679 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
681 /* * Size of this field, in bits, or zero if not packed.
682 If non-zero in an array type, indicates the element size in
683 bits (used only in Ada at the moment).
684 For an unpacked field, the field's type's length
685 says how many bytes the field occupies. */
687 unsigned int bitsize
: 28;
689 /* * In a struct or union type, type of this field.
690 - In a function or member type, type of this argument.
691 - In an array type, the domain-type of the array. */
695 /* * Name of field, value or argument.
696 NULL for range bounds, array domains, and member function
704 ULONGEST
bit_stride () const
706 if (this->flag_is_byte_stride
)
707 return this->stride
.const_val () * 8;
709 return this->stride
.const_val ();
712 /* * Low bound of range. */
714 struct dynamic_prop low
;
716 /* * High bound of range. */
718 struct dynamic_prop high
;
720 /* The stride value for this range. This can be stored in bits or bytes
721 based on the value of BYTE_STRIDE_P. It is optional to have a stride
722 value, if this range has no stride value defined then this will be set
723 to the constant zero. */
725 struct dynamic_prop stride
;
727 /* * The bias. Sometimes a range value is biased before storage.
728 The bias is added to the stored bits to form the true value. */
732 /* True if HIGH range bound contains the number of elements in the
733 subrange. This affects how the final high bound is computed. */
735 unsigned int flag_upper_bound_is_count
: 1;
737 /* True if LOW or/and HIGH are resolved into a static bound from
740 unsigned int flag_bound_evaluated
: 1;
742 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
744 unsigned int flag_is_byte_stride
: 1;
747 /* Compare two range_bounds objects for equality. Simply does
748 memberwise comparison. */
749 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
751 /* Compare two range_bounds objects for inequality. */
752 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
759 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
760 point to cplus_struct_default, a default static instance of a
761 struct cplus_struct_type. */
763 struct cplus_struct_type
*cplus_stuff
;
765 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
766 provides additional information. */
768 struct gnat_aux_type
*gnat_stuff
;
770 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
771 floatformat object that describes the floating-point value
772 that resides within the type. */
774 const struct floatformat
*floatformat
;
776 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
778 struct func_type
*func_stuff
;
780 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
781 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
784 struct type
*self_type
;
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 flag_fixed_instance
: 1;
812 unsigned int flag_objfile_owned
: 1;
813 unsigned int 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 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 /* Get the bounds bounds of this type. The type must be a range type. */
985 range_bounds
*bounds () const
987 switch (this->code ())
989 case TYPE_CODE_RANGE
:
990 return this->main_type
->flds_bnds
.bounds
;
992 case TYPE_CODE_ARRAY
:
993 case TYPE_CODE_STRING
:
994 return this->index_type ()->bounds ();
997 gdb_assert_not_reached
998 ("type::bounds called on type with invalid code");
1002 /* Set the bounds of this type. The type must be a range type. */
1003 void set_bounds (range_bounds
*bounds
)
1005 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1007 this->main_type
->flds_bnds
.bounds
= bounds
;
1010 ULONGEST
bit_stride () const
1012 return this->bounds ()->bit_stride ();
1015 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1016 the type is signed (unless TYPE_NOSIGN is set). */
1018 bool is_unsigned () const
1020 return this->main_type
->m_flag_unsigned
;
1023 void set_is_unsigned (bool is_unsigned
)
1025 this->main_type
->m_flag_unsigned
= is_unsigned
;
1028 /* No sign for this type. In C++, "char", "signed char", and
1029 "unsigned char" are distinct types; so we need an extra flag to
1030 indicate the absence of a sign! */
1032 bool has_no_signedness () const
1034 return this->main_type
->m_flag_nosign
;
1037 void set_has_no_signedness (bool has_no_signedness
)
1039 this->main_type
->m_flag_nosign
= has_no_signedness
;
1042 /* This appears in a type's flags word if it is a stub type (e.g.,
1043 if someone referenced a type that wasn't defined in a source file
1044 via (struct sir_not_appearing_in_this_film *)). */
1046 bool is_stub () const
1048 return this->main_type
->m_flag_stub
;
1051 void set_is_stub (bool is_stub
)
1053 this->main_type
->m_flag_stub
= is_stub
;
1056 /* The target type of this type is a stub type, and this type needs
1057 to be updated if it gets un-stubbed in check_typedef. Used for
1058 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
1059 based on the TYPE_LENGTH of the target type. Also, set for
1060 TYPE_CODE_TYPEDEF. */
1062 bool target_is_stub () const
1064 return this->main_type
->m_flag_target_stub
;
1067 void set_target_is_stub (bool target_is_stub
)
1069 this->main_type
->m_flag_target_stub
= target_is_stub
;
1072 /* This is a function type which appears to have a prototype. We
1073 need this for function calls in order to tell us if it's necessary
1074 to coerce the args, or to just do the standard conversions. This
1075 is used with a short field. */
1077 bool is_prototyped () const
1079 return this->main_type
->m_flag_prototyped
;
1082 void set_is_prototyped (bool is_prototyped
)
1084 this->main_type
->m_flag_prototyped
= is_prototyped
;
1087 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
1090 bool has_varargs () const
1092 return this->main_type
->m_flag_varargs
;
1095 void set_has_varargs (bool has_varargs
)
1097 this->main_type
->m_flag_varargs
= has_varargs
;
1100 /* Identify a vector type. Gcc is handling this by adding an extra
1101 attribute to the array type. We slurp that in as a new flag of a
1102 type. This is used only in dwarf2read.c. */
1104 bool is_vector () const
1106 return this->main_type
->m_flag_vector
;
1109 void set_is_vector (bool is_vector
)
1111 this->main_type
->m_flag_vector
= is_vector
;
1114 /* This debug target supports TYPE_STUB(t). In the unsupported case
1115 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
1116 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
1117 guessed the TYPE_STUB(t) value (see dwarfread.c). */
1119 bool stub_is_supported () const
1121 return this->main_type
->m_flag_stub_supported
;
1124 void set_stub_is_supported (bool stub_is_supported
)
1126 this->main_type
->m_flag_stub_supported
= stub_is_supported
;
1129 /* Used only for TYPE_CODE_FUNC where it specifies the real function
1130 address is returned by this function call. TYPE_TARGET_TYPE
1131 determines the final returned function type to be presented to
1134 bool is_gnu_ifunc () const
1136 return this->main_type
->m_flag_gnu_ifunc
;
1139 void set_is_gnu_ifunc (bool is_gnu_ifunc
)
1141 this->main_type
->m_flag_gnu_ifunc
= is_gnu_ifunc
;
1144 /* * Return the dynamic property of the requested KIND from this type's
1145 list of dynamic properties. */
1146 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1148 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1149 property to this type.
1151 This function assumes that this type is objfile-owned. */
1152 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1154 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1155 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1157 /* * Type that is a pointer to this type.
1158 NULL if no such pointer-to type is known yet.
1159 The debugger may add the address of such a type
1160 if it has to construct one later. */
1162 struct type
*pointer_type
;
1164 /* * C++: also need a reference type. */
1166 struct type
*reference_type
;
1168 /* * A C++ rvalue reference type added in C++11. */
1170 struct type
*rvalue_reference_type
;
1172 /* * Variant chain. This points to a type that differs from this
1173 one only in qualifiers and length. Currently, the possible
1174 qualifiers are const, volatile, code-space, data-space, and
1175 address class. The length may differ only when one of the
1176 address class flags are set. The variants are linked in a
1177 circular ring and share MAIN_TYPE. */
1181 /* * The alignment for this type. Zero means that the alignment was
1182 not specified in the debug info. Note that this is stored in a
1183 funny way: as the log base 2 (plus 1) of the alignment; so a
1184 value of 1 means the alignment is 1, and a value of 9 means the
1185 alignment is 256. */
1187 unsigned align_log2
: TYPE_ALIGN_BITS
;
1189 /* * Flags specific to this instance of the type, indicating where
1192 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1193 binary or-ed with the target type, with a special case for
1194 address class and space class. For example if this typedef does
1195 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1196 instance flags are completely inherited from the target type. No
1197 qualifiers can be cleared by the typedef. See also
1199 unsigned instance_flags
: 9;
1201 /* * Length of storage for a value of this type. The value is the
1202 expression in host bytes of what sizeof(type) would return. This
1203 size includes padding. For example, an i386 extended-precision
1204 floating point value really only occupies ten bytes, but most
1205 ABI's declare its size to be 12 bytes, to preserve alignment.
1206 A `struct type' representing such a floating-point type would
1207 have a `length' value of 12, even though the last two bytes are
1210 Since this field is expressed in host bytes, its value is appropriate
1211 to pass to memcpy and such (it is assumed that GDB itself always runs
1212 on an 8-bits addressable architecture). However, when using it for
1213 target address arithmetic (e.g. adding it to a target address), the
1214 type_length_units function should be used in order to get the length
1215 expressed in target addressable memory units. */
1219 /* * Core type, shared by a group of qualified types. */
1221 struct main_type
*main_type
;
1227 /* * The overloaded name.
1228 This is generally allocated in the objfile's obstack.
1229 However stabsread.c sometimes uses malloc. */
1233 /* * The number of methods with this name. */
1237 /* * The list of methods. */
1239 struct fn_field
*fn_fields
;
1246 /* * If is_stub is clear, this is the mangled name which we can look
1247 up to find the address of the method (FIXME: it would be cleaner
1248 to have a pointer to the struct symbol here instead).
1250 If is_stub is set, this is the portion of the mangled name which
1251 specifies the arguments. For example, "ii", if there are two int
1252 arguments, or "" if there are no arguments. See gdb_mangle_name
1253 for the conversion from this format to the one used if is_stub is
1256 const char *physname
;
1258 /* * The function type for the method.
1260 (This comment used to say "The return value of the method", but
1261 that's wrong. The function type is expected here, i.e. something
1262 with TYPE_CODE_METHOD, and *not* the return-value type). */
1266 /* * For virtual functions. First baseclass that defines this
1267 virtual function. */
1269 struct type
*fcontext
;
1273 unsigned int is_const
:1;
1274 unsigned int is_volatile
:1;
1275 unsigned int is_private
:1;
1276 unsigned int is_protected
:1;
1277 unsigned int is_artificial
:1;
1279 /* * A stub method only has some fields valid (but they are enough
1280 to reconstruct the rest of the fields). */
1282 unsigned int is_stub
:1;
1284 /* * True if this function is a constructor, false otherwise. */
1286 unsigned int is_constructor
: 1;
1288 /* * True if this function is deleted, false otherwise. */
1290 unsigned int is_deleted
: 1;
1292 /* * DW_AT_defaulted attribute for this function. The value is one
1293 of the DW_DEFAULTED constants. */
1295 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1299 unsigned int dummy
:6;
1301 /* * Index into that baseclass's virtual function table, minus 2;
1302 else if static: VOFFSET_STATIC; else: 0. */
1304 unsigned int voffset
:16;
1306 #define VOFFSET_STATIC 1
1312 /* * Unqualified name to be prefixed by owning class qualified
1317 /* * Type this typedef named NAME represents. */
1321 /* * True if this field was declared protected, false otherwise. */
1322 unsigned int is_protected
: 1;
1324 /* * True if this field was declared private, false otherwise. */
1325 unsigned int is_private
: 1;
1328 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1329 TYPE_CODE_UNION nodes. */
1331 struct cplus_struct_type
1333 /* * Number of base classes this type derives from. The
1334 baseclasses are stored in the first N_BASECLASSES fields
1335 (i.e. the `fields' field of the struct type). The only fields
1336 of struct field that are used are: type, name, loc.bitpos. */
1338 short n_baseclasses
;
1340 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1341 All access to this field must be through TYPE_VPTR_FIELDNO as one
1342 thing it does is check whether the field has been initialized.
1343 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1344 which for portability reasons doesn't initialize this field.
1345 TYPE_VPTR_FIELDNO returns -1 for this case.
1347 If -1, we were unable to find the virtual function table pointer in
1348 initial symbol reading, and get_vptr_fieldno should be called to find
1349 it if possible. get_vptr_fieldno will update this field if possible.
1350 Otherwise the value is left at -1.
1352 Unused if this type does not have virtual functions. */
1356 /* * Number of methods with unique names. All overloaded methods
1357 with the same name count only once. */
1361 /* * Number of template arguments. */
1363 unsigned short n_template_arguments
;
1365 /* * One if this struct is a dynamic class, as defined by the
1366 Itanium C++ ABI: if it requires a virtual table pointer,
1367 because it or any of its base classes have one or more virtual
1368 member functions or virtual base classes. Minus one if not
1369 dynamic. Zero if not yet computed. */
1373 /* * The calling convention for this type, fetched from the
1374 DW_AT_calling_convention attribute. The value is one of the
1377 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1379 /* * The base class which defined the virtual function table pointer. */
1381 struct type
*vptr_basetype
;
1383 /* * For derived classes, the number of base classes is given by
1384 n_baseclasses and virtual_field_bits is a bit vector containing
1385 one bit per base class. If the base class is virtual, the
1386 corresponding bit will be set.
1391 class C : public B, public virtual A {};
1393 B is a baseclass of C; A is a virtual baseclass for C.
1394 This is a C++ 2.0 language feature. */
1396 B_TYPE
*virtual_field_bits
;
1398 /* * For classes with private fields, the number of fields is
1399 given by nfields and private_field_bits is a bit vector
1400 containing one bit per field.
1402 If the field is private, the corresponding bit will be set. */
1404 B_TYPE
*private_field_bits
;
1406 /* * For classes with protected fields, the number of fields is
1407 given by nfields and protected_field_bits is a bit vector
1408 containing one bit per field.
1410 If the field is private, the corresponding bit will be set. */
1412 B_TYPE
*protected_field_bits
;
1414 /* * For classes with fields to be ignored, either this is
1415 optimized out or this field has length 0. */
1417 B_TYPE
*ignore_field_bits
;
1419 /* * For classes, structures, and unions, a description of each
1420 field, which consists of an overloaded name, followed by the
1421 types of arguments that the method expects, and then the name
1422 after it has been renamed to make it distinct.
1424 fn_fieldlists points to an array of nfn_fields of these. */
1426 struct fn_fieldlist
*fn_fieldlists
;
1428 /* * typedefs defined inside this class. typedef_field points to
1429 an array of typedef_field_count elements. */
1431 struct decl_field
*typedef_field
;
1433 unsigned typedef_field_count
;
1435 /* * The nested types defined by this type. nested_types points to
1436 an array of nested_types_count elements. */
1438 struct decl_field
*nested_types
;
1440 unsigned nested_types_count
;
1442 /* * The template arguments. This is an array with
1443 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1446 struct symbol
**template_arguments
;
1449 /* * Struct used to store conversion rankings. */
1455 /* * When two conversions are of the same type and therefore have
1456 the same rank, subrank is used to differentiate the two.
1458 Eg: Two derived-class-pointer to base-class-pointer conversions
1459 would both have base pointer conversion rank, but the
1460 conversion with the shorter distance to the ancestor is
1461 preferable. 'subrank' would be used to reflect that. */
1466 /* * Used for ranking a function for overload resolution. */
1468 typedef std::vector
<rank
> badness_vector
;
1470 /* * GNAT Ada-specific information for various Ada types. */
1472 struct gnat_aux_type
1474 /* * Parallel type used to encode information about dynamic types
1475 used in Ada (such as variant records, variable-size array,
1477 struct type
* descriptive_type
;
1480 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1484 /* * The calling convention for targets supporting multiple ABIs.
1485 Right now this is only fetched from the Dwarf-2
1486 DW_AT_calling_convention attribute. The value is one of the
1489 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1491 /* * Whether this function normally returns to its caller. It is
1492 set from the DW_AT_noreturn attribute if set on the
1493 DW_TAG_subprogram. */
1495 unsigned int is_noreturn
: 1;
1497 /* * Only those DW_TAG_call_site's in this function that have
1498 DW_AT_call_tail_call set are linked in this list. Function
1499 without its tail call list complete
1500 (DW_AT_call_all_tail_calls or its superset
1501 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1502 DW_TAG_call_site's exist in such function. */
1504 struct call_site
*tail_call_list
;
1506 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1507 contains the method. */
1509 struct type
*self_type
;
1512 /* struct call_site_parameter can be referenced in callees by several ways. */
1514 enum call_site_parameter_kind
1516 /* * Use field call_site_parameter.u.dwarf_reg. */
1517 CALL_SITE_PARAMETER_DWARF_REG
,
1519 /* * Use field call_site_parameter.u.fb_offset. */
1520 CALL_SITE_PARAMETER_FB_OFFSET
,
1522 /* * Use field call_site_parameter.u.param_offset. */
1523 CALL_SITE_PARAMETER_PARAM_OFFSET
1526 struct call_site_target
1528 union field_location loc
;
1530 /* * Discriminant for union field_location. */
1532 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1535 union call_site_parameter_u
1537 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1538 as DWARF register number, for register passed
1543 /* * Offset from the callee's frame base, for stack passed
1544 parameters. This equals offset from the caller's stack
1547 CORE_ADDR fb_offset
;
1549 /* * Offset relative to the start of this PER_CU to
1550 DW_TAG_formal_parameter which is referenced by both
1551 caller and the callee. */
1553 cu_offset param_cu_off
;
1556 struct call_site_parameter
1558 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1560 union call_site_parameter_u u
;
1562 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1564 const gdb_byte
*value
;
1567 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1568 It may be NULL if not provided by DWARF. */
1570 const gdb_byte
*data_value
;
1571 size_t data_value_size
;
1574 /* * A place where a function gets called from, represented by
1575 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1579 /* * Address of the first instruction after this call. It must be
1580 the first field as we overload core_addr_hash and core_addr_eq
1585 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1587 struct call_site
*tail_call_next
;
1589 /* * Describe DW_AT_call_target. Missing attribute uses
1590 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1592 struct call_site_target target
;
1594 /* * Size of the PARAMETER array. */
1596 unsigned parameter_count
;
1598 /* * CU of the function where the call is located. It gets used
1599 for DWARF blocks execution in the parameter array below. */
1601 dwarf2_per_cu_data
*per_cu
;
1603 /* objfile of the function where the call is located. */
1605 dwarf2_per_objfile
*per_objfile
;
1607 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1609 struct call_site_parameter parameter
[1];
1612 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1613 static structure. */
1615 extern const struct cplus_struct_type cplus_struct_default
;
1617 extern void allocate_cplus_struct_type (struct type
*);
1619 #define INIT_CPLUS_SPECIFIC(type) \
1620 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1621 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1622 &cplus_struct_default)
1624 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1626 #define HAVE_CPLUS_STRUCT(type) \
1627 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1628 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1630 #define INIT_NONE_SPECIFIC(type) \
1631 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1632 TYPE_MAIN_TYPE (type)->type_specific = {})
1634 extern const struct gnat_aux_type gnat_aux_default
;
1636 extern void allocate_gnat_aux_type (struct type
*);
1638 #define INIT_GNAT_SPECIFIC(type) \
1639 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1640 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1641 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1642 /* * A macro that returns non-zero if the type-specific data should be
1643 read as "gnat-stuff". */
1644 #define HAVE_GNAT_AUX_INFO(type) \
1645 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1647 /* * True if TYPE is known to be an Ada type of some kind. */
1648 #define ADA_TYPE_P(type) \
1649 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1650 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1651 && TYPE_FIXED_INSTANCE (type)))
1653 #define INIT_FUNC_SPECIFIC(type) \
1654 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1655 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1656 TYPE_ZALLOC (type, \
1657 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1659 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1660 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1661 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1662 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1663 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1664 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1665 #define TYPE_CHAIN(thistype) (thistype)->chain
1666 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1667 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1668 so you only have to call check_typedef once. Since allocate_value
1669 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1670 #define TYPE_LENGTH(thistype) (thistype)->length
1672 /* * Return the alignment of the type in target addressable memory
1673 units, or 0 if no alignment was specified. */
1674 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1676 /* * Return the alignment of the type in target addressable memory
1677 units, or 0 if no alignment was specified. */
1678 extern unsigned type_raw_align (struct type
*);
1680 /* * Return the alignment of the type in target addressable memory
1681 units. Return 0 if the alignment cannot be determined; but note
1682 that this makes an effort to compute the alignment even it it was
1683 not specified in the debug info. */
1684 extern unsigned type_align (struct type
*);
1686 /* * Set the alignment of the type. The alignment must be a power of
1687 2. Returns false if the given value does not fit in the available
1688 space in struct type. */
1689 extern bool set_type_align (struct type
*, ULONGEST
);
1691 /* Property accessors for the type data location. */
1692 #define TYPE_DATA_LOCATION(thistype) \
1693 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1694 #define TYPE_DATA_LOCATION_BATON(thistype) \
1695 TYPE_DATA_LOCATION (thistype)->data.baton
1696 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1697 (TYPE_DATA_LOCATION (thistype)->const_val ())
1698 #define TYPE_DATA_LOCATION_KIND(thistype) \
1699 (TYPE_DATA_LOCATION (thistype)->kind ())
1700 #define TYPE_DYNAMIC_LENGTH(thistype) \
1701 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1703 /* Property accessors for the type allocated/associated. */
1704 #define TYPE_ALLOCATED_PROP(thistype) \
1705 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1706 #define TYPE_ASSOCIATED_PROP(thistype) \
1707 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1711 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1712 /* Do not call this, use TYPE_SELF_TYPE. */
1713 extern struct type
*internal_type_self_type (struct type
*);
1714 extern void set_type_self_type (struct type
*, struct type
*);
1716 extern int internal_type_vptr_fieldno (struct type
*);
1717 extern void set_type_vptr_fieldno (struct type
*, int);
1718 extern struct type
*internal_type_vptr_basetype (struct type
*);
1719 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1720 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1721 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1723 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1724 #define TYPE_SPECIFIC_FIELD(thistype) \
1725 TYPE_MAIN_TYPE(thistype)->type_specific_field
1726 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1727 where we're trying to print an Ada array using the C language.
1728 In that case, there is no "cplus_stuff", but the C language assumes
1729 that there is. What we do, in that case, is pretend that there is
1730 an implicit one which is the default cplus stuff. */
1731 #define TYPE_CPLUS_SPECIFIC(thistype) \
1732 (!HAVE_CPLUS_STRUCT(thistype) \
1733 ? (struct cplus_struct_type*)&cplus_struct_default \
1734 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1735 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1736 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1737 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1738 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1739 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1740 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1741 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1742 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1743 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1744 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1745 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1746 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1747 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1748 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1749 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1750 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1752 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1753 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1754 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1756 #define FIELD_NAME(thisfld) ((thisfld).name)
1757 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1758 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1759 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1760 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1761 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1762 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1763 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1764 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1765 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1766 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1767 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1768 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1769 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1770 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1771 #define SET_FIELD_PHYSNAME(thisfld, name) \
1772 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1773 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1774 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1775 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1776 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1777 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1778 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1779 FIELD_DWARF_BLOCK (thisfld) = (addr))
1780 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1781 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1783 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1784 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1785 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1786 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1787 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1788 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1789 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1790 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1791 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1792 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1794 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1795 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1796 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1797 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1798 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1799 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1800 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1801 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1802 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1803 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1804 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1805 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1806 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1807 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1808 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1809 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1810 #define TYPE_FIELD_PRIVATE(thistype, n) \
1811 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1812 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1813 #define TYPE_FIELD_PROTECTED(thistype, n) \
1814 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1815 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1816 #define TYPE_FIELD_IGNORE(thistype, n) \
1817 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1818 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1819 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1820 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1821 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1823 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1824 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1825 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1826 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1827 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1829 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1830 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1831 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1832 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1833 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1834 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1836 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1837 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1838 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1839 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1840 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1841 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1842 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1843 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1844 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1845 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1846 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1847 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1848 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1849 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1850 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1851 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1852 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1854 /* Accessors for typedefs defined by a class. */
1855 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1856 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1857 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1858 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1859 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1860 TYPE_TYPEDEF_FIELD (thistype, n).name
1861 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1862 TYPE_TYPEDEF_FIELD (thistype, n).type
1863 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1864 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1865 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1866 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1867 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1868 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1870 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1871 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1872 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1873 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1874 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1875 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1876 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1877 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1878 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1879 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1880 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1881 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1882 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1883 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1885 #define TYPE_IS_OPAQUE(thistype) \
1886 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1887 || ((thistype)->code () == TYPE_CODE_UNION)) \
1888 && ((thistype)->num_fields () == 0) \
1889 && (!HAVE_CPLUS_STRUCT (thistype) \
1890 || TYPE_NFN_FIELDS (thistype) == 0) \
1891 && ((thistype)->is_stub () || !(thistype)->stub_is_supported ()))
1893 /* * A helper macro that returns the name of a type or "unnamed type"
1894 if the type has no name. */
1896 #define TYPE_SAFE_NAME(type) \
1897 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1899 /* * A helper macro that returns the name of an error type. If the
1900 type has a name, it is used; otherwise, a default is used. */
1902 #define TYPE_ERROR_NAME(type) \
1903 (type->name () ? type->name () : _("<error type>"))
1905 /* Given TYPE, return its floatformat. */
1906 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1910 /* Integral types. */
1912 /* Implicit size/sign (based on the architecture's ABI). */
1913 struct type
*builtin_void
;
1914 struct type
*builtin_char
;
1915 struct type
*builtin_short
;
1916 struct type
*builtin_int
;
1917 struct type
*builtin_long
;
1918 struct type
*builtin_signed_char
;
1919 struct type
*builtin_unsigned_char
;
1920 struct type
*builtin_unsigned_short
;
1921 struct type
*builtin_unsigned_int
;
1922 struct type
*builtin_unsigned_long
;
1923 struct type
*builtin_bfloat16
;
1924 struct type
*builtin_half
;
1925 struct type
*builtin_float
;
1926 struct type
*builtin_double
;
1927 struct type
*builtin_long_double
;
1928 struct type
*builtin_complex
;
1929 struct type
*builtin_double_complex
;
1930 struct type
*builtin_string
;
1931 struct type
*builtin_bool
;
1932 struct type
*builtin_long_long
;
1933 struct type
*builtin_unsigned_long_long
;
1934 struct type
*builtin_decfloat
;
1935 struct type
*builtin_decdouble
;
1936 struct type
*builtin_declong
;
1938 /* "True" character types.
1939 We use these for the '/c' print format, because c_char is just a
1940 one-byte integral type, which languages less laid back than C
1941 will print as ... well, a one-byte integral type. */
1942 struct type
*builtin_true_char
;
1943 struct type
*builtin_true_unsigned_char
;
1945 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1946 is for when an architecture needs to describe a register that has
1948 struct type
*builtin_int0
;
1949 struct type
*builtin_int8
;
1950 struct type
*builtin_uint8
;
1951 struct type
*builtin_int16
;
1952 struct type
*builtin_uint16
;
1953 struct type
*builtin_int24
;
1954 struct type
*builtin_uint24
;
1955 struct type
*builtin_int32
;
1956 struct type
*builtin_uint32
;
1957 struct type
*builtin_int64
;
1958 struct type
*builtin_uint64
;
1959 struct type
*builtin_int128
;
1960 struct type
*builtin_uint128
;
1962 /* Wide character types. */
1963 struct type
*builtin_char16
;
1964 struct type
*builtin_char32
;
1965 struct type
*builtin_wchar
;
1967 /* Pointer types. */
1969 /* * `pointer to data' type. Some target platforms use an implicitly
1970 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1971 struct type
*builtin_data_ptr
;
1973 /* * `pointer to function (returning void)' type. Harvard
1974 architectures mean that ABI function and code pointers are not
1975 interconvertible. Similarly, since ANSI, C standards have
1976 explicitly said that pointers to functions and pointers to data
1977 are not interconvertible --- that is, you can't cast a function
1978 pointer to void * and back, and expect to get the same value.
1979 However, all function pointer types are interconvertible, so void
1980 (*) () can server as a generic function pointer. */
1982 struct type
*builtin_func_ptr
;
1984 /* * `function returning pointer to function (returning void)' type.
1985 The final void return type is not significant for it. */
1987 struct type
*builtin_func_func
;
1989 /* Special-purpose types. */
1991 /* * This type is used to represent a GDB internal function. */
1993 struct type
*internal_fn
;
1995 /* * This type is used to represent an xmethod. */
1996 struct type
*xmethod
;
1999 /* * Return the type table for the specified architecture. */
2001 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
2003 /* * Per-objfile types used by symbol readers. */
2007 /* Basic types based on the objfile architecture. */
2008 struct type
*builtin_void
;
2009 struct type
*builtin_char
;
2010 struct type
*builtin_short
;
2011 struct type
*builtin_int
;
2012 struct type
*builtin_long
;
2013 struct type
*builtin_long_long
;
2014 struct type
*builtin_signed_char
;
2015 struct type
*builtin_unsigned_char
;
2016 struct type
*builtin_unsigned_short
;
2017 struct type
*builtin_unsigned_int
;
2018 struct type
*builtin_unsigned_long
;
2019 struct type
*builtin_unsigned_long_long
;
2020 struct type
*builtin_half
;
2021 struct type
*builtin_float
;
2022 struct type
*builtin_double
;
2023 struct type
*builtin_long_double
;
2025 /* * This type is used to represent symbol addresses. */
2026 struct type
*builtin_core_addr
;
2028 /* * This type represents a type that was unrecognized in symbol
2030 struct type
*builtin_error
;
2032 /* * Types used for symbols with no debug information. */
2033 struct type
*nodebug_text_symbol
;
2034 struct type
*nodebug_text_gnu_ifunc_symbol
;
2035 struct type
*nodebug_got_plt_symbol
;
2036 struct type
*nodebug_data_symbol
;
2037 struct type
*nodebug_unknown_symbol
;
2038 struct type
*nodebug_tls_symbol
;
2041 /* * Return the type table for the specified objfile. */
2043 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
2045 /* Explicit floating-point formats. See "floatformat.h". */
2046 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
2047 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
2048 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2049 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2050 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2051 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2052 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2053 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2054 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2055 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2056 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2057 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2058 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2060 /* Allocate space for storing data associated with a particular
2061 type. We ensure that the space is allocated using the same
2062 mechanism that was used to allocate the space for the type
2063 structure itself. I.e. if the type is on an objfile's
2064 objfile_obstack, then the space for data associated with that type
2065 will also be allocated on the objfile_obstack. If the type is
2066 associated with a gdbarch, then the space for data associated with that
2067 type will also be allocated on the gdbarch_obstack.
2069 If a type is not associated with neither an objfile or a gdbarch then
2070 you should not use this macro to allocate space for data, instead you
2071 should call xmalloc directly, and ensure the memory is correctly freed
2072 when it is no longer needed. */
2074 #define TYPE_ALLOC(t,size) \
2075 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2076 ? &TYPE_OBJFILE (t)->objfile_obstack \
2077 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2081 /* See comment on TYPE_ALLOC. */
2083 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2085 /* Use alloc_type to allocate a type owned by an objfile. Use
2086 alloc_type_arch to allocate a type owned by an architecture. Use
2087 alloc_type_copy to allocate a type with the same owner as a
2088 pre-existing template type, no matter whether objfile or
2090 extern struct type
*alloc_type (struct objfile
*);
2091 extern struct type
*alloc_type_arch (struct gdbarch
*);
2092 extern struct type
*alloc_type_copy (const struct type
*);
2094 /* * Return the type's architecture. For types owned by an
2095 architecture, that architecture is returned. For types owned by an
2096 objfile, that objfile's architecture is returned. */
2098 extern struct gdbarch
*get_type_arch (const struct type
*);
2100 /* * This returns the target type (or NULL) of TYPE, also skipping
2103 extern struct type
*get_target_type (struct type
*type
);
2105 /* Return the equivalent of TYPE_LENGTH, but in number of target
2106 addressable memory units of the associated gdbarch instead of bytes. */
2108 extern unsigned int type_length_units (struct type
*type
);
2110 /* * Helper function to construct objfile-owned types. */
2112 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2114 extern struct type
*init_integer_type (struct objfile
*, int, int,
2116 extern struct type
*init_character_type (struct objfile
*, int, int,
2118 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2120 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2121 const struct floatformat
**,
2122 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2123 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2124 extern struct type
*init_complex_type (const char *, struct type
*);
2125 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2128 /* Helper functions to construct architecture-owned types. */
2129 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2131 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2133 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2135 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2137 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2138 const struct floatformat
**);
2139 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2140 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2143 /* Helper functions to construct a struct or record type. An
2144 initially empty type is created using arch_composite_type().
2145 Fields are then added using append_composite_type_field*(). A union
2146 type has its size set to the largest field. A struct type has each
2147 field packed against the previous. */
2149 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2150 const char *name
, enum type_code code
);
2151 extern void append_composite_type_field (struct type
*t
, const char *name
,
2152 struct type
*field
);
2153 extern void append_composite_type_field_aligned (struct type
*t
,
2157 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2158 struct type
*field
);
2160 /* Helper functions to construct a bit flags type. An initially empty
2161 type is created using arch_flag_type(). Flags are then added using
2162 append_flag_type_field() and append_flag_type_flag(). */
2163 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2164 const char *name
, int bit
);
2165 extern void append_flags_type_field (struct type
*type
,
2166 int start_bitpos
, int nr_bits
,
2167 struct type
*field_type
, const char *name
);
2168 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2171 extern void make_vector_type (struct type
*array_type
);
2172 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2174 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2175 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2176 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2179 extern struct type
*make_reference_type (struct type
*, struct type
**,
2182 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2184 extern struct type
*make_restrict_type (struct type
*);
2186 extern struct type
*make_unqualified_type (struct type
*);
2188 extern struct type
*make_atomic_type (struct type
*);
2190 extern void replace_type (struct type
*, struct type
*);
2192 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2194 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2196 extern struct type
*make_type_with_address_space (struct type
*type
,
2197 int space_identifier
);
2199 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2201 extern struct type
*lookup_methodptr_type (struct type
*);
2203 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2204 struct type
*to_type
, struct field
*args
,
2205 int nargs
, int varargs
);
2207 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2210 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2212 extern struct type
*allocate_stub_method (struct type
*);
2214 extern const char *type_name_or_error (struct type
*type
);
2218 /* The field of the element, or NULL if no element was found. */
2219 struct field
*field
;
2221 /* The bit offset of the element in the parent structure. */
2225 /* Given a type TYPE, lookup the field and offset of the component named
2228 TYPE can be either a struct or union, or a pointer or reference to
2229 a struct or union. If it is a pointer or reference, its target
2230 type is automatically used. Thus '.' and '->' are interchangable,
2231 as specified for the definitions of the expression element types
2232 STRUCTOP_STRUCT and STRUCTOP_PTR.
2234 If NOERR is nonzero, the returned structure will have field set to
2235 NULL if there is no component named NAME.
2237 If the component NAME is a field in an anonymous substructure of
2238 TYPE, the returned offset is a "global" offset relative to TYPE
2239 rather than an offset within the substructure. */
2241 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2243 /* Given a type TYPE, lookup the type of the component named NAME.
2245 TYPE can be either a struct or union, or a pointer or reference to
2246 a struct or union. If it is a pointer or reference, its target
2247 type is automatically used. Thus '.' and '->' are interchangable,
2248 as specified for the definitions of the expression element types
2249 STRUCTOP_STRUCT and STRUCTOP_PTR.
2251 If NOERR is nonzero, return NULL if there is no component named
2254 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2256 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2258 extern struct type
*lookup_pointer_type (struct type
*);
2260 extern struct type
*make_function_type (struct type
*, struct type
**);
2262 extern struct type
*lookup_function_type (struct type
*);
2264 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2268 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2272 extern struct type
*create_array_type_with_stride
2273 (struct type
*, struct type
*, struct type
*,
2274 struct dynamic_prop
*, unsigned int);
2276 extern struct type
*create_range_type (struct type
*, struct type
*,
2277 const struct dynamic_prop
*,
2278 const struct dynamic_prop
*,
2281 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2282 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2285 extern struct type
* create_range_type_with_stride
2286 (struct type
*result_type
, struct type
*index_type
,
2287 const struct dynamic_prop
*low_bound
,
2288 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2289 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2291 extern struct type
*create_array_type (struct type
*, struct type
*,
2294 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2296 extern struct type
*create_string_type (struct type
*, struct type
*,
2298 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2300 extern struct type
*create_set_type (struct type
*, struct type
*);
2302 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2305 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2308 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2310 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2312 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2313 ADDR specifies the location of the variable the type is bound to.
2314 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2315 static properties is returned. */
2316 extern struct type
*resolve_dynamic_type
2317 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2320 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2321 extern int is_dynamic_type (struct type
*type
);
2323 extern struct type
*check_typedef (struct type
*);
2325 extern void check_stub_method_group (struct type
*, int);
2327 extern char *gdb_mangle_name (struct type
*, int, int);
2329 extern struct type
*lookup_typename (const struct language_defn
*,
2330 const char *, const struct block
*, int);
2332 extern struct type
*lookup_template_type (const char *, struct type
*,
2333 const struct block
*);
2335 extern int get_vptr_fieldno (struct type
*, struct type
**);
2337 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2339 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2340 LONGEST
*high_bound
);
2342 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2344 extern int class_types_same_p (const struct type
*, const struct type
*);
2346 extern int is_ancestor (struct type
*, struct type
*);
2348 extern int is_public_ancestor (struct type
*, struct type
*);
2350 extern int is_unique_ancestor (struct type
*, struct value
*);
2352 /* Overload resolution */
2354 /* * Badness if parameter list length doesn't match arg list length. */
2355 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2357 /* * Dummy badness value for nonexistent parameter positions. */
2358 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2359 /* * Badness if no conversion among types. */
2360 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2362 /* * Badness of an exact match. */
2363 extern const struct rank EXACT_MATCH_BADNESS
;
2365 /* * Badness of integral promotion. */
2366 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2367 /* * Badness of floating promotion. */
2368 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2369 /* * Badness of converting a derived class pointer
2370 to a base class pointer. */
2371 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2372 /* * Badness of integral conversion. */
2373 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2374 /* * Badness of floating conversion. */
2375 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2376 /* * Badness of integer<->floating conversions. */
2377 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2378 /* * Badness of conversion of pointer to void pointer. */
2379 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2380 /* * Badness of conversion to boolean. */
2381 extern const struct rank BOOL_CONVERSION_BADNESS
;
2382 /* * Badness of converting derived to base class. */
2383 extern const struct rank BASE_CONVERSION_BADNESS
;
2384 /* * Badness of converting from non-reference to reference. Subrank
2385 is the type of reference conversion being done. */
2386 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2387 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2388 /* * Conversion to rvalue reference. */
2389 #define REFERENCE_CONVERSION_RVALUE 1
2390 /* * Conversion to const lvalue reference. */
2391 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2393 /* * Badness of converting integer 0 to NULL pointer. */
2394 extern const struct rank NULL_POINTER_CONVERSION
;
2395 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2397 extern const struct rank CV_CONVERSION_BADNESS
;
2398 #define CV_CONVERSION_CONST 1
2399 #define CV_CONVERSION_VOLATILE 2
2401 /* Non-standard conversions allowed by the debugger */
2403 /* * Converting a pointer to an int is usually OK. */
2404 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2406 /* * Badness of converting a (non-zero) integer constant
2408 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2410 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2411 extern int compare_ranks (struct rank a
, struct rank b
);
2413 extern int compare_badness (const badness_vector
&,
2414 const badness_vector
&);
2416 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2417 gdb::array_view
<value
*> args
);
2419 extern struct rank
rank_one_type (struct type
*, struct type
*,
2422 extern void recursive_dump_type (struct type
*, int);
2424 extern int field_is_static (struct field
*);
2428 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2429 const struct value_print_options
*,
2430 int, struct ui_file
*);
2432 extern int can_dereference (struct type
*);
2434 extern int is_integral_type (struct type
*);
2436 extern int is_floating_type (struct type
*);
2438 extern int is_scalar_type (struct type
*type
);
2440 extern int is_scalar_type_recursive (struct type
*);
2442 extern int class_or_union_p (const struct type
*);
2444 extern void maintenance_print_type (const char *, int);
2446 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2448 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2450 htab_t copied_types
);
2452 extern struct type
*copy_type (const struct type
*type
);
2454 extern bool types_equal (struct type
*, struct type
*);
2456 extern bool types_deeply_equal (struct type
*, struct type
*);
2458 extern int type_not_allocated (const struct type
*type
);
2460 extern int type_not_associated (const struct type
*type
);
2462 /* * When the type includes explicit byte ordering, return that.
2463 Otherwise, the byte ordering from gdbarch_byte_order for
2464 get_type_arch is returned. */
2466 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2468 /* A flag to enable printing of debugging information of C++
2471 extern unsigned int overload_debug
;
2473 #endif /* GDBTYPES_H */