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 /* * Not textual. By default, GDB treats all single byte integers as
214 characters (or elements of strings) unless this flag is set. */
216 #define TYPE_NOTTEXT(t) (((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_NOTTEXT)
218 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
219 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
220 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
222 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
223 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
224 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
226 /* * True if this type was declared using the "class" keyword. This is
227 only valid for C++ structure and enum types. If false, a structure
228 was declared as a "struct"; if true it was declared "class". For
229 enum types, this is true when "enum class" or "enum struct" was
230 used to declare the type.. */
232 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
234 /* * True if this type is a "flag" enum. A flag enum is one where all
235 the values are pairwise disjoint when "and"ed together. This
236 affects how enum values are printed. */
238 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
240 /* * Constant type. If this is set, the corresponding type has a
243 #define TYPE_CONST(t) ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_CONST) != 0)
245 /* * Volatile type. If this is set, the corresponding type has a
246 volatile modifier. */
248 #define TYPE_VOLATILE(t) \
249 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
251 /* * Restrict type. If this is set, the corresponding type has a
252 restrict modifier. */
254 #define TYPE_RESTRICT(t) \
255 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
257 /* * Atomic type. If this is set, the corresponding type has an
260 #define TYPE_ATOMIC(t) \
261 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
263 /* * True if this type represents either an lvalue or lvalue reference type. */
265 #define TYPE_IS_REFERENCE(t) \
266 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
268 /* * True if this type is allocatable. */
269 #define TYPE_IS_ALLOCATABLE(t) \
270 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
272 /* * True if this type has variant parts. */
273 #define TYPE_HAS_VARIANT_PARTS(t) \
274 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
276 /* * True if this type has a dynamic length. */
277 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
278 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
280 /* * Instruction-space delimited type. This is for Harvard architectures
281 which have separate instruction and data address spaces (and perhaps
284 GDB usually defines a flat address space that is a superset of the
285 architecture's two (or more) address spaces, but this is an extension
286 of the architecture's model.
288 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
289 resides in instruction memory, even if its address (in the extended
290 flat address space) does not reflect this.
292 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
293 corresponding type resides in the data memory space, even if
294 this is not indicated by its (flat address space) address.
296 If neither flag is set, the default space for functions / methods
297 is instruction space, and for data objects is data memory. */
299 #define TYPE_CODE_SPACE(t) \
300 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
302 #define TYPE_DATA_SPACE(t) \
303 ((((t)->instance_flags ()) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
305 /* * Address class flags. Some environments provide for pointers
306 whose size is different from that of a normal pointer or address
307 types where the bits are interpreted differently than normal
308 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
309 target specific ways to represent these different types of address
312 #define TYPE_ADDRESS_CLASS_1(t) (((t)->instance_flags ()) \
313 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
314 #define TYPE_ADDRESS_CLASS_2(t) (((t)->instance_flags ()) \
315 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
316 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
317 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
318 #define TYPE_ADDRESS_CLASS_ALL(t) (((t)->instance_flags ()) \
319 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
321 /* * Information about a single discriminant. */
323 struct discriminant_range
325 /* * The range of values for the variant. This is an inclusive
329 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
330 is true if this should be an unsigned comparison; false for
332 bool contains (ULONGEST value
, bool is_unsigned
) const
335 return value
>= low
&& value
<= high
;
336 LONGEST valuel
= (LONGEST
) value
;
337 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
343 /* * A single variant. A variant has a list of discriminant values.
344 When the discriminator matches one of these, the variant is
345 enabled. Each variant controls zero or more fields; and may also
346 control other variant parts as well. This struct corresponds to
347 DW_TAG_variant in DWARF. */
349 struct variant
: allocate_on_obstack
351 /* * The discriminant ranges for this variant. */
352 gdb::array_view
<discriminant_range
> discriminants
;
354 /* * The fields controlled by this variant. This is inclusive on
355 the low end and exclusive on the high end. A variant may not
356 control any fields, in which case the two values will be equal.
357 These are indexes into the type's array of fields. */
361 /* * Variant parts controlled by this variant. */
362 gdb::array_view
<variant_part
> parts
;
364 /* * Return true if this is the default variant. The default
365 variant can be recognized because it has no associated
367 bool is_default () const
369 return discriminants
.empty ();
372 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
373 if this should be an unsigned comparison; false for signed. */
374 bool matches (ULONGEST value
, bool is_unsigned
) const;
377 /* * A variant part. Each variant part has an optional discriminant
378 and holds an array of variants. This struct corresponds to
379 DW_TAG_variant_part in DWARF. */
381 struct variant_part
: allocate_on_obstack
383 /* * The index of the discriminant field in the outer type. This is
384 an index into the type's array of fields. If this is -1, there
385 is no discriminant, and only the default variant can be
386 considered to be selected. */
387 int discriminant_index
;
389 /* * True if this discriminant is unsigned; false if signed. This
390 comes from the type of the discriminant. */
393 /* * The variants that are controlled by this variant part. Note
394 that these will always be sorted by field number. */
395 gdb::array_view
<variant
> variants
;
399 enum dynamic_prop_kind
401 PROP_UNDEFINED
, /* Not defined. */
402 PROP_CONST
, /* Constant. */
403 PROP_ADDR_OFFSET
, /* Address offset. */
404 PROP_LOCEXPR
, /* Location expression. */
405 PROP_LOCLIST
, /* Location list. */
406 PROP_VARIANT_PARTS
, /* Variant parts. */
407 PROP_TYPE
, /* Type. */
410 union dynamic_prop_data
412 /* Storage for constant property. */
416 /* Storage for dynamic property. */
420 /* Storage of variant parts for a type. A type with variant parts
421 has all its fields "linearized" -- stored in a single field
422 array, just as if they had all been declared that way. The
423 variant parts are attached via a dynamic property, and then are
424 used to control which fields end up in the final type during
425 dynamic type resolution. */
427 const gdb::array_view
<variant_part
> *variant_parts
;
429 /* Once a variant type is resolved, we may want to be able to go
430 from the resolved type to the original type. In this case we
431 rewrite the property's kind and set this field. */
433 struct type
*original_type
;
436 /* * Used to store a dynamic property. */
440 dynamic_prop_kind
kind () const
445 void set_undefined ()
447 m_kind
= PROP_UNDEFINED
;
450 LONGEST
const_val () const
452 gdb_assert (m_kind
== PROP_CONST
);
454 return m_data
.const_val
;
457 void set_const_val (LONGEST const_val
)
460 m_data
.const_val
= const_val
;
465 gdb_assert (m_kind
== PROP_LOCEXPR
466 || m_kind
== PROP_LOCLIST
467 || m_kind
== PROP_ADDR_OFFSET
);
472 void set_locexpr (void *baton
)
474 m_kind
= PROP_LOCEXPR
;
475 m_data
.baton
= baton
;
478 void set_loclist (void *baton
)
480 m_kind
= PROP_LOCLIST
;
481 m_data
.baton
= baton
;
484 void set_addr_offset (void *baton
)
486 m_kind
= PROP_ADDR_OFFSET
;
487 m_data
.baton
= baton
;
490 const gdb::array_view
<variant_part
> *variant_parts () const
492 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
494 return m_data
.variant_parts
;
497 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
499 m_kind
= PROP_VARIANT_PARTS
;
500 m_data
.variant_parts
= variant_parts
;
503 struct type
*original_type () const
505 gdb_assert (m_kind
== PROP_TYPE
);
507 return m_data
.original_type
;
510 void set_original_type (struct type
*original_type
)
513 m_data
.original_type
= original_type
;
516 /* Determine which field of the union dynamic_prop.data is used. */
517 enum dynamic_prop_kind m_kind
;
519 /* Storage for dynamic or static value. */
520 union dynamic_prop_data m_data
;
523 /* Compare two dynamic_prop objects for equality. dynamic_prop
524 instances are equal iff they have the same type and storage. */
525 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
527 /* Compare two dynamic_prop objects for inequality. */
528 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
533 /* * Define a type's dynamic property node kind. */
534 enum dynamic_prop_node_kind
536 /* A property providing a type's data location.
537 Evaluating this field yields to the location of an object's data. */
538 DYN_PROP_DATA_LOCATION
,
540 /* A property representing DW_AT_allocated. The presence of this attribute
541 indicates that the object of the type can be allocated/deallocated. */
544 /* A property representing DW_AT_associated. The presence of this attribute
545 indicated that the object of the type can be associated. */
548 /* A property providing an array's byte stride. */
549 DYN_PROP_BYTE_STRIDE
,
551 /* A property holding variant parts. */
552 DYN_PROP_VARIANT_PARTS
,
554 /* A property holding the size of the type. */
558 /* * List for dynamic type attributes. */
559 struct dynamic_prop_list
561 /* The kind of dynamic prop in this node. */
562 enum dynamic_prop_node_kind prop_kind
;
564 /* The dynamic property itself. */
565 struct dynamic_prop prop
;
567 /* A pointer to the next dynamic property. */
568 struct dynamic_prop_list
*next
;
571 /* * Determine which field of the union main_type.fields[x].loc is
576 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
577 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
578 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
579 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
580 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
583 /* * A discriminant to determine which field in the
584 main_type.type_specific union is being used, if any.
586 For types such as TYPE_CODE_FLT, the use of this
587 discriminant is really redundant, as we know from the type code
588 which field is going to be used. As such, it would be possible to
589 reduce the size of this enum in order to save a bit or two for
590 other fields of struct main_type. But, since we still have extra
591 room , and for the sake of clarity and consistency, we treat all fields
592 of the union the same way. */
594 enum type_specific_kind
597 TYPE_SPECIFIC_CPLUS_STUFF
,
598 TYPE_SPECIFIC_GNAT_STUFF
,
599 TYPE_SPECIFIC_FLOATFORMAT
,
600 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
602 TYPE_SPECIFIC_SELF_TYPE
,
608 struct objfile
*objfile
;
609 struct gdbarch
*gdbarch
;
614 /* * Position of this field, counting in bits from start of
615 containing structure. For big-endian targets, it is the bit
616 offset to the MSB. For little-endian targets, it is the bit
617 offset to the LSB. */
624 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
625 physaddr is the location (in the target) of the static
626 field. Otherwise, physname is the mangled label of the
630 const char *physname
;
632 /* * The field location can be computed by evaluating the
633 following DWARF block. Its DATA is allocated on
634 objfile_obstack - no CU load is needed to access it. */
636 struct dwarf2_locexpr_baton
*dwarf_block
;
641 struct type
*type () const
646 void set_type (struct type
*type
)
651 union field_location loc
;
653 /* * For a function or member type, this is 1 if the argument is
654 marked artificial. Artificial arguments should not be shown
655 to the user. For TYPE_CODE_RANGE it is set if the specific
656 bound is not defined. */
658 unsigned int artificial
: 1;
660 /* * Discriminant for union field_location. */
662 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
664 /* * Size of this field, in bits, or zero if not packed.
665 If non-zero in an array type, indicates the element size in
666 bits (used only in Ada at the moment).
667 For an unpacked field, the field's type's length
668 says how many bytes the field occupies. */
670 unsigned int bitsize
: 28;
672 /* * In a struct or union type, type of this field.
673 - In a function or member type, type of this argument.
674 - In an array type, the domain-type of the array. */
678 /* * Name of field, value or argument.
679 NULL for range bounds, array domains, and member function
687 ULONGEST
bit_stride () const
689 if (this->flag_is_byte_stride
)
690 return this->stride
.const_val () * 8;
692 return this->stride
.const_val ();
695 /* * Low bound of range. */
697 struct dynamic_prop low
;
699 /* * High bound of range. */
701 struct dynamic_prop high
;
703 /* The stride value for this range. This can be stored in bits or bytes
704 based on the value of BYTE_STRIDE_P. It is optional to have a stride
705 value, if this range has no stride value defined then this will be set
706 to the constant zero. */
708 struct dynamic_prop stride
;
710 /* * The bias. Sometimes a range value is biased before storage.
711 The bias is added to the stored bits to form the true value. */
715 /* True if HIGH range bound contains the number of elements in the
716 subrange. This affects how the final high bound is computed. */
718 unsigned int flag_upper_bound_is_count
: 1;
720 /* True if LOW or/and HIGH are resolved into a static bound from
723 unsigned int flag_bound_evaluated
: 1;
725 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
727 unsigned int flag_is_byte_stride
: 1;
730 /* Compare two range_bounds objects for equality. Simply does
731 memberwise comparison. */
732 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
734 /* Compare two range_bounds objects for inequality. */
735 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
742 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
743 point to cplus_struct_default, a default static instance of a
744 struct cplus_struct_type. */
746 struct cplus_struct_type
*cplus_stuff
;
748 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
749 provides additional information. */
751 struct gnat_aux_type
*gnat_stuff
;
753 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
754 floatformat object that describes the floating-point value
755 that resides within the type. */
757 const struct floatformat
*floatformat
;
759 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
761 struct func_type
*func_stuff
;
763 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
764 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
767 struct type
*self_type
;
769 /* * An integer-like scalar type may be stored in just part of its
770 enclosing storage bytes. This structure describes this
774 /* * The bit size of the integer. This can be 0. For integers
775 that fill their storage (the ordinary case), this field holds
776 the byte size times 8. */
777 unsigned short bit_size
;
778 /* * The bit offset of the integer. This is ordinarily 0, and can
779 only be non-zero if the bit size is less than the storage
781 unsigned short bit_offset
;
785 /* * Main structure representing a type in GDB.
787 This structure is space-critical. Its layout has been tweaked to
788 reduce the space used. */
792 /* * Code for kind of type. */
794 ENUM_BITFIELD(type_code
) code
: 8;
796 /* * Flags about this type. These fields appear at this location
797 because they packs nicely here. See the TYPE_* macros for
798 documentation about these fields. */
800 unsigned int m_flag_unsigned
: 1;
801 unsigned int m_flag_nosign
: 1;
802 unsigned int m_flag_stub
: 1;
803 unsigned int m_flag_target_stub
: 1;
804 unsigned int m_flag_prototyped
: 1;
805 unsigned int m_flag_varargs
: 1;
806 unsigned int m_flag_vector
: 1;
807 unsigned int m_flag_stub_supported
: 1;
808 unsigned int m_flag_gnu_ifunc
: 1;
809 unsigned int m_flag_fixed_instance
: 1;
810 unsigned int flag_objfile_owned
: 1;
811 unsigned int m_flag_endianity_not_default
: 1;
813 /* * True if this type was declared with "class" rather than
816 unsigned int flag_declared_class
: 1;
818 /* * True if this is an enum type with disjoint values. This
819 affects how the enum is printed. */
821 unsigned int flag_flag_enum
: 1;
823 /* * A discriminant telling us which field of the type_specific
824 union is being used for this type, if any. */
826 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
828 /* * Number of fields described for this type. This field appears
829 at this location because it packs nicely here. */
833 /* * Name of this type, or NULL if none.
835 This is used for printing only. For looking up a name, look for
836 a symbol in the VAR_DOMAIN. This is generally allocated in the
837 objfile's obstack. However coffread.c uses malloc. */
841 /* * Every type is now associated with a particular objfile, and the
842 type is allocated on the objfile_obstack for that objfile. One
843 problem however, is that there are times when gdb allocates new
844 types while it is not in the process of reading symbols from a
845 particular objfile. Fortunately, these happen when the type
846 being created is a derived type of an existing type, such as in
847 lookup_pointer_type(). So we can just allocate the new type
848 using the same objfile as the existing type, but to do this we
849 need a backpointer to the objfile from the existing type. Yes
850 this is somewhat ugly, but without major overhaul of the internal
851 type system, it can't be avoided for now. */
853 union type_owner owner
;
855 /* * For a pointer type, describes the type of object pointed to.
856 - For an array type, describes the type of the elements.
857 - For a function or method type, describes the type of the return value.
858 - For a range type, describes the type of the full range.
859 - For a complex type, describes the type of each coordinate.
860 - For a special record or union type encoding a dynamic-sized type
861 in GNAT, a memoized pointer to a corresponding static version of
863 - Unused otherwise. */
865 struct type
*target_type
;
867 /* * For structure and union types, a description of each field.
868 For set and pascal array types, there is one "field",
869 whose type is the domain type of the set or array.
870 For range types, there are two "fields",
871 the minimum and maximum values (both inclusive).
872 For enum types, each possible value is described by one "field".
873 For a function or method type, a "field" for each parameter.
874 For C++ classes, there is one field for each base class (if it is
875 a derived class) plus one field for each class data member. Member
876 functions are recorded elsewhere.
878 Using a pointer to a separate array of fields
879 allows all types to have the same size, which is useful
880 because we can allocate the space for a type before
881 we know what to put in it. */
885 struct field
*fields
;
887 /* * Union member used for range types. */
889 struct range_bounds
*bounds
;
891 /* If this is a scalar type, then this is its corresponding
893 struct type
*complex_type
;
897 /* * Slot to point to additional language-specific fields of this
900 union type_specific type_specific
;
902 /* * Contains all dynamic type properties. */
903 struct dynamic_prop_list
*dyn_prop_list
;
906 /* * Number of bits allocated for alignment. */
908 #define TYPE_ALIGN_BITS 8
910 /* * A ``struct type'' describes a particular instance of a type, with
911 some particular qualification. */
915 /* Get the type code of this type.
917 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
918 type, you need to do `check_typedef (type)->code ()`. */
919 type_code
code () const
921 return this->main_type
->code
;
924 /* Set the type code of this type. */
925 void set_code (type_code code
)
927 this->main_type
->code
= code
;
930 /* Get the name of this type. */
931 const char *name () const
933 return this->main_type
->name
;
936 /* Set the name of this type. */
937 void set_name (const char *name
)
939 this->main_type
->name
= name
;
942 /* Get the number of fields of this type. */
943 int num_fields () const
945 return this->main_type
->nfields
;
948 /* Set the number of fields of this type. */
949 void set_num_fields (int num_fields
)
951 this->main_type
->nfields
= num_fields
;
954 /* Get the fields array of this type. */
955 struct field
*fields () const
957 return this->main_type
->flds_bnds
.fields
;
960 /* Get the field at index IDX. */
961 struct field
&field (int idx
) const
963 return this->fields ()[idx
];
966 /* Set the fields array of this type. */
967 void set_fields (struct field
*fields
)
969 this->main_type
->flds_bnds
.fields
= fields
;
972 type
*index_type () const
974 return this->field (0).type ();
977 void set_index_type (type
*index_type
)
979 this->field (0).set_type (index_type
);
982 /* Return the instance flags converted to the correct type. */
983 const type_instance_flags
instance_flags () const
985 return (enum type_instance_flag_value
) this->m_instance_flags
;
988 /* Set the instance flags. */
989 void set_instance_flags (type_instance_flags flags
)
991 this->m_instance_flags
= flags
;
994 /* Get the bounds bounds of this type. The type must be a range type. */
995 range_bounds
*bounds () const
997 switch (this->code ())
999 case TYPE_CODE_RANGE
:
1000 return this->main_type
->flds_bnds
.bounds
;
1002 case TYPE_CODE_ARRAY
:
1003 case TYPE_CODE_STRING
:
1004 return this->index_type ()->bounds ();
1007 gdb_assert_not_reached
1008 ("type::bounds called on type with invalid code");
1012 /* Set the bounds of this type. The type must be a range type. */
1013 void set_bounds (range_bounds
*bounds
)
1015 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1017 this->main_type
->flds_bnds
.bounds
= bounds
;
1020 ULONGEST
bit_stride () const
1022 return this->bounds ()->bit_stride ();
1025 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1026 the type is signed (unless TYPE_NOSIGN is set). */
1028 bool is_unsigned () const
1030 return this->main_type
->m_flag_unsigned
;
1033 void set_is_unsigned (bool is_unsigned
)
1035 this->main_type
->m_flag_unsigned
= is_unsigned
;
1038 /* No sign for this type. In C++, "char", "signed char", and
1039 "unsigned char" are distinct types; so we need an extra flag to
1040 indicate the absence of a sign! */
1042 bool has_no_signedness () const
1044 return this->main_type
->m_flag_nosign
;
1047 void set_has_no_signedness (bool has_no_signedness
)
1049 this->main_type
->m_flag_nosign
= has_no_signedness
;
1052 /* This appears in a type's flags word if it is a stub type (e.g.,
1053 if someone referenced a type that wasn't defined in a source file
1054 via (struct sir_not_appearing_in_this_film *)). */
1056 bool is_stub () const
1058 return this->main_type
->m_flag_stub
;
1061 void set_is_stub (bool is_stub
)
1063 this->main_type
->m_flag_stub
= is_stub
;
1066 /* The target type of this type is a stub type, and this type needs
1067 to be updated if it gets un-stubbed in check_typedef. Used for
1068 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
1069 based on the TYPE_LENGTH of the target type. Also, set for
1070 TYPE_CODE_TYPEDEF. */
1072 bool target_is_stub () const
1074 return this->main_type
->m_flag_target_stub
;
1077 void set_target_is_stub (bool target_is_stub
)
1079 this->main_type
->m_flag_target_stub
= target_is_stub
;
1082 /* This is a function type which appears to have a prototype. We
1083 need this for function calls in order to tell us if it's necessary
1084 to coerce the args, or to just do the standard conversions. This
1085 is used with a short field. */
1087 bool is_prototyped () const
1089 return this->main_type
->m_flag_prototyped
;
1092 void set_is_prototyped (bool is_prototyped
)
1094 this->main_type
->m_flag_prototyped
= is_prototyped
;
1097 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
1100 bool has_varargs () const
1102 return this->main_type
->m_flag_varargs
;
1105 void set_has_varargs (bool has_varargs
)
1107 this->main_type
->m_flag_varargs
= has_varargs
;
1110 /* Identify a vector type. Gcc is handling this by adding an extra
1111 attribute to the array type. We slurp that in as a new flag of a
1112 type. This is used only in dwarf2read.c. */
1114 bool is_vector () const
1116 return this->main_type
->m_flag_vector
;
1119 void set_is_vector (bool is_vector
)
1121 this->main_type
->m_flag_vector
= is_vector
;
1124 /* This debug target supports TYPE_STUB(t). In the unsupported case
1125 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
1126 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
1127 guessed the TYPE_STUB(t) value (see dwarfread.c). */
1129 bool stub_is_supported () const
1131 return this->main_type
->m_flag_stub_supported
;
1134 void set_stub_is_supported (bool stub_is_supported
)
1136 this->main_type
->m_flag_stub_supported
= stub_is_supported
;
1139 /* Used only for TYPE_CODE_FUNC where it specifies the real function
1140 address is returned by this function call. TYPE_TARGET_TYPE
1141 determines the final returned function type to be presented to
1144 bool is_gnu_ifunc () const
1146 return this->main_type
->m_flag_gnu_ifunc
;
1149 void set_is_gnu_ifunc (bool is_gnu_ifunc
)
1151 this->main_type
->m_flag_gnu_ifunc
= is_gnu_ifunc
;
1154 /* The debugging formats (especially STABS) do not contain enough
1155 information to represent all Ada types---especially those whose
1156 size depends on dynamic quantities. Therefore, the GNAT Ada
1157 compiler includes extra information in the form of additional type
1158 definitions connected by naming conventions. This flag indicates
1159 that the type is an ordinary (unencoded) GDB type that has been
1160 created from the necessary run-time information, and does not need
1161 further interpretation. Optionally marks ordinary, fixed-size GDB
1164 bool is_fixed_instance () const
1166 return this->main_type
->m_flag_fixed_instance
;
1169 void set_is_fixed_instance (bool is_fixed_instance
)
1171 this->main_type
->m_flag_fixed_instance
= is_fixed_instance
;
1174 /* A compiler may supply dwarf instrumentation that indicates the desired
1175 endian interpretation of the variable differs from the native endian
1178 bool endianity_is_not_default () const
1180 return this->main_type
->m_flag_endianity_not_default
;
1183 void set_endianity_is_not_default (bool endianity_is_not_default
)
1185 this->main_type
->m_flag_endianity_not_default
= endianity_is_not_default
;
1188 /* * Return the dynamic property of the requested KIND from this type's
1189 list of dynamic properties. */
1190 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1192 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1193 property to this type.
1195 This function assumes that this type is objfile-owned. */
1196 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1198 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1199 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1201 /* * Return true if this is an integer type whose logical (bit) size
1202 differs from its storage size; false otherwise. Always return
1203 false for non-integer (i.e., non-TYPE_SPECIFIC_INT) types. */
1204 bool bit_size_differs_p () const
1206 return (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
1207 && main_type
->type_specific
.int_stuff
.bit_size
!= 8 * length
);
1210 /* * Return the logical (bit) size for this integer type. Only
1211 valid for integer (TYPE_SPECIFIC_INT) types. */
1212 unsigned short bit_size () const
1214 gdb_assert (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
);
1215 return main_type
->type_specific
.int_stuff
.bit_size
;
1218 /* * Return the bit offset for this integer type. Only valid for
1219 integer (TYPE_SPECIFIC_INT) types. */
1220 unsigned short bit_offset () const
1222 gdb_assert (main_type
->type_specific_field
== TYPE_SPECIFIC_INT
);
1223 return main_type
->type_specific
.int_stuff
.bit_offset
;
1226 /* * Type that is a pointer to this type.
1227 NULL if no such pointer-to type is known yet.
1228 The debugger may add the address of such a type
1229 if it has to construct one later. */
1231 struct type
*pointer_type
;
1233 /* * C++: also need a reference type. */
1235 struct type
*reference_type
;
1237 /* * A C++ rvalue reference type added in C++11. */
1239 struct type
*rvalue_reference_type
;
1241 /* * Variant chain. This points to a type that differs from this
1242 one only in qualifiers and length. Currently, the possible
1243 qualifiers are const, volatile, code-space, data-space, and
1244 address class. The length may differ only when one of the
1245 address class flags are set. The variants are linked in a
1246 circular ring and share MAIN_TYPE. */
1250 /* * The alignment for this type. Zero means that the alignment was
1251 not specified in the debug info. Note that this is stored in a
1252 funny way: as the log base 2 (plus 1) of the alignment; so a
1253 value of 1 means the alignment is 1, and a value of 9 means the
1254 alignment is 256. */
1256 unsigned align_log2
: TYPE_ALIGN_BITS
;
1258 /* * Flags specific to this instance of the type, indicating where
1261 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1262 binary or-ed with the target type, with a special case for
1263 address class and space class. For example if this typedef does
1264 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1265 instance flags are completely inherited from the target type. No
1266 qualifiers can be cleared by the typedef. See also
1268 unsigned m_instance_flags
: 9;
1270 /* * Length of storage for a value of this type. The value is the
1271 expression in host bytes of what sizeof(type) would return. This
1272 size includes padding. For example, an i386 extended-precision
1273 floating point value really only occupies ten bytes, but most
1274 ABI's declare its size to be 12 bytes, to preserve alignment.
1275 A `struct type' representing such a floating-point type would
1276 have a `length' value of 12, even though the last two bytes are
1279 Since this field is expressed in host bytes, its value is appropriate
1280 to pass to memcpy and such (it is assumed that GDB itself always runs
1281 on an 8-bits addressable architecture). However, when using it for
1282 target address arithmetic (e.g. adding it to a target address), the
1283 type_length_units function should be used in order to get the length
1284 expressed in target addressable memory units. */
1288 /* * Core type, shared by a group of qualified types. */
1290 struct main_type
*main_type
;
1296 /* * The overloaded name.
1297 This is generally allocated in the objfile's obstack.
1298 However stabsread.c sometimes uses malloc. */
1302 /* * The number of methods with this name. */
1306 /* * The list of methods. */
1308 struct fn_field
*fn_fields
;
1315 /* * If is_stub is clear, this is the mangled name which we can look
1316 up to find the address of the method (FIXME: it would be cleaner
1317 to have a pointer to the struct symbol here instead).
1319 If is_stub is set, this is the portion of the mangled name which
1320 specifies the arguments. For example, "ii", if there are two int
1321 arguments, or "" if there are no arguments. See gdb_mangle_name
1322 for the conversion from this format to the one used if is_stub is
1325 const char *physname
;
1327 /* * The function type for the method.
1329 (This comment used to say "The return value of the method", but
1330 that's wrong. The function type is expected here, i.e. something
1331 with TYPE_CODE_METHOD, and *not* the return-value type). */
1335 /* * For virtual functions. First baseclass that defines this
1336 virtual function. */
1338 struct type
*fcontext
;
1342 unsigned int is_const
:1;
1343 unsigned int is_volatile
:1;
1344 unsigned int is_private
:1;
1345 unsigned int is_protected
:1;
1346 unsigned int is_artificial
:1;
1348 /* * A stub method only has some fields valid (but they are enough
1349 to reconstruct the rest of the fields). */
1351 unsigned int is_stub
:1;
1353 /* * True if this function is a constructor, false otherwise. */
1355 unsigned int is_constructor
: 1;
1357 /* * True if this function is deleted, false otherwise. */
1359 unsigned int is_deleted
: 1;
1361 /* * DW_AT_defaulted attribute for this function. The value is one
1362 of the DW_DEFAULTED constants. */
1364 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1368 unsigned int dummy
:6;
1370 /* * Index into that baseclass's virtual function table, minus 2;
1371 else if static: VOFFSET_STATIC; else: 0. */
1373 unsigned int voffset
:16;
1375 #define VOFFSET_STATIC 1
1381 /* * Unqualified name to be prefixed by owning class qualified
1386 /* * Type this typedef named NAME represents. */
1390 /* * True if this field was declared protected, false otherwise. */
1391 unsigned int is_protected
: 1;
1393 /* * True if this field was declared private, false otherwise. */
1394 unsigned int is_private
: 1;
1397 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1398 TYPE_CODE_UNION nodes. */
1400 struct cplus_struct_type
1402 /* * Number of base classes this type derives from. The
1403 baseclasses are stored in the first N_BASECLASSES fields
1404 (i.e. the `fields' field of the struct type). The only fields
1405 of struct field that are used are: type, name, loc.bitpos. */
1407 short n_baseclasses
;
1409 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1410 All access to this field must be through TYPE_VPTR_FIELDNO as one
1411 thing it does is check whether the field has been initialized.
1412 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1413 which for portability reasons doesn't initialize this field.
1414 TYPE_VPTR_FIELDNO returns -1 for this case.
1416 If -1, we were unable to find the virtual function table pointer in
1417 initial symbol reading, and get_vptr_fieldno should be called to find
1418 it if possible. get_vptr_fieldno will update this field if possible.
1419 Otherwise the value is left at -1.
1421 Unused if this type does not have virtual functions. */
1425 /* * Number of methods with unique names. All overloaded methods
1426 with the same name count only once. */
1430 /* * Number of template arguments. */
1432 unsigned short n_template_arguments
;
1434 /* * One if this struct is a dynamic class, as defined by the
1435 Itanium C++ ABI: if it requires a virtual table pointer,
1436 because it or any of its base classes have one or more virtual
1437 member functions or virtual base classes. Minus one if not
1438 dynamic. Zero if not yet computed. */
1442 /* * The calling convention for this type, fetched from the
1443 DW_AT_calling_convention attribute. The value is one of the
1446 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1448 /* * The base class which defined the virtual function table pointer. */
1450 struct type
*vptr_basetype
;
1452 /* * For derived classes, the number of base classes is given by
1453 n_baseclasses and virtual_field_bits is a bit vector containing
1454 one bit per base class. If the base class is virtual, the
1455 corresponding bit will be set.
1460 class C : public B, public virtual A {};
1462 B is a baseclass of C; A is a virtual baseclass for C.
1463 This is a C++ 2.0 language feature. */
1465 B_TYPE
*virtual_field_bits
;
1467 /* * For classes with private fields, the number of fields is
1468 given by nfields and private_field_bits is a bit vector
1469 containing one bit per field.
1471 If the field is private, the corresponding bit will be set. */
1473 B_TYPE
*private_field_bits
;
1475 /* * For classes with protected fields, the number of fields is
1476 given by nfields and protected_field_bits is a bit vector
1477 containing one bit per field.
1479 If the field is private, the corresponding bit will be set. */
1481 B_TYPE
*protected_field_bits
;
1483 /* * For classes with fields to be ignored, either this is
1484 optimized out or this field has length 0. */
1486 B_TYPE
*ignore_field_bits
;
1488 /* * For classes, structures, and unions, a description of each
1489 field, which consists of an overloaded name, followed by the
1490 types of arguments that the method expects, and then the name
1491 after it has been renamed to make it distinct.
1493 fn_fieldlists points to an array of nfn_fields of these. */
1495 struct fn_fieldlist
*fn_fieldlists
;
1497 /* * typedefs defined inside this class. typedef_field points to
1498 an array of typedef_field_count elements. */
1500 struct decl_field
*typedef_field
;
1502 unsigned typedef_field_count
;
1504 /* * The nested types defined by this type. nested_types points to
1505 an array of nested_types_count elements. */
1507 struct decl_field
*nested_types
;
1509 unsigned nested_types_count
;
1511 /* * The template arguments. This is an array with
1512 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1515 struct symbol
**template_arguments
;
1518 /* * Struct used to store conversion rankings. */
1524 /* * When two conversions are of the same type and therefore have
1525 the same rank, subrank is used to differentiate the two.
1527 Eg: Two derived-class-pointer to base-class-pointer conversions
1528 would both have base pointer conversion rank, but the
1529 conversion with the shorter distance to the ancestor is
1530 preferable. 'subrank' would be used to reflect that. */
1535 /* * Used for ranking a function for overload resolution. */
1537 typedef std::vector
<rank
> badness_vector
;
1539 /* * GNAT Ada-specific information for various Ada types. */
1541 struct gnat_aux_type
1543 /* * Parallel type used to encode information about dynamic types
1544 used in Ada (such as variant records, variable-size array,
1546 struct type
* descriptive_type
;
1549 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1553 /* * The calling convention for targets supporting multiple ABIs.
1554 Right now this is only fetched from the Dwarf-2
1555 DW_AT_calling_convention attribute. The value is one of the
1558 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1560 /* * Whether this function normally returns to its caller. It is
1561 set from the DW_AT_noreturn attribute if set on the
1562 DW_TAG_subprogram. */
1564 unsigned int is_noreturn
: 1;
1566 /* * Only those DW_TAG_call_site's in this function that have
1567 DW_AT_call_tail_call set are linked in this list. Function
1568 without its tail call list complete
1569 (DW_AT_call_all_tail_calls or its superset
1570 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1571 DW_TAG_call_site's exist in such function. */
1573 struct call_site
*tail_call_list
;
1575 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1576 contains the method. */
1578 struct type
*self_type
;
1581 /* struct call_site_parameter can be referenced in callees by several ways. */
1583 enum call_site_parameter_kind
1585 /* * Use field call_site_parameter.u.dwarf_reg. */
1586 CALL_SITE_PARAMETER_DWARF_REG
,
1588 /* * Use field call_site_parameter.u.fb_offset. */
1589 CALL_SITE_PARAMETER_FB_OFFSET
,
1591 /* * Use field call_site_parameter.u.param_offset. */
1592 CALL_SITE_PARAMETER_PARAM_OFFSET
1595 struct call_site_target
1597 union field_location loc
;
1599 /* * Discriminant for union field_location. */
1601 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1604 union call_site_parameter_u
1606 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1607 as DWARF register number, for register passed
1612 /* * Offset from the callee's frame base, for stack passed
1613 parameters. This equals offset from the caller's stack
1616 CORE_ADDR fb_offset
;
1618 /* * Offset relative to the start of this PER_CU to
1619 DW_TAG_formal_parameter which is referenced by both
1620 caller and the callee. */
1622 cu_offset param_cu_off
;
1625 struct call_site_parameter
1627 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1629 union call_site_parameter_u u
;
1631 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1633 const gdb_byte
*value
;
1636 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1637 It may be NULL if not provided by DWARF. */
1639 const gdb_byte
*data_value
;
1640 size_t data_value_size
;
1643 /* * A place where a function gets called from, represented by
1644 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1648 /* * Address of the first instruction after this call. It must be
1649 the first field as we overload core_addr_hash and core_addr_eq
1654 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1656 struct call_site
*tail_call_next
;
1658 /* * Describe DW_AT_call_target. Missing attribute uses
1659 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1661 struct call_site_target target
;
1663 /* * Size of the PARAMETER array. */
1665 unsigned parameter_count
;
1667 /* * CU of the function where the call is located. It gets used
1668 for DWARF blocks execution in the parameter array below. */
1670 dwarf2_per_cu_data
*per_cu
;
1672 /* objfile of the function where the call is located. */
1674 dwarf2_per_objfile
*per_objfile
;
1676 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1678 struct call_site_parameter parameter
[1];
1681 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1682 static structure. */
1684 extern const struct cplus_struct_type cplus_struct_default
;
1686 extern void allocate_cplus_struct_type (struct type
*);
1688 #define INIT_CPLUS_SPECIFIC(type) \
1689 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1690 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1691 &cplus_struct_default)
1693 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1695 #define HAVE_CPLUS_STRUCT(type) \
1696 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1697 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1699 #define INIT_NONE_SPECIFIC(type) \
1700 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1701 TYPE_MAIN_TYPE (type)->type_specific = {})
1703 extern const struct gnat_aux_type gnat_aux_default
;
1705 extern void allocate_gnat_aux_type (struct type
*);
1707 #define INIT_GNAT_SPECIFIC(type) \
1708 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1709 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1710 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1711 /* * A macro that returns non-zero if the type-specific data should be
1712 read as "gnat-stuff". */
1713 #define HAVE_GNAT_AUX_INFO(type) \
1714 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1716 /* * True if TYPE is known to be an Ada type of some kind. */
1717 #define ADA_TYPE_P(type) \
1718 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1719 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1720 && (type)->is_fixed_instance ()))
1722 #define INIT_FUNC_SPECIFIC(type) \
1723 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1724 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1725 TYPE_ZALLOC (type, \
1726 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1728 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1729 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1730 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1731 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1732 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1733 #define TYPE_CHAIN(thistype) (thistype)->chain
1734 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1735 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1736 so you only have to call check_typedef once. Since allocate_value
1737 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1738 #define TYPE_LENGTH(thistype) (thistype)->length
1740 /* * Return the alignment of the type in target addressable memory
1741 units, or 0 if no alignment was specified. */
1742 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1744 /* * Return the alignment of the type in target addressable memory
1745 units, or 0 if no alignment was specified. */
1746 extern unsigned type_raw_align (struct type
*);
1748 /* * Return the alignment of the type in target addressable memory
1749 units. Return 0 if the alignment cannot be determined; but note
1750 that this makes an effort to compute the alignment even it it was
1751 not specified in the debug info. */
1752 extern unsigned type_align (struct type
*);
1754 /* * Set the alignment of the type. The alignment must be a power of
1755 2. Returns false if the given value does not fit in the available
1756 space in struct type. */
1757 extern bool set_type_align (struct type
*, ULONGEST
);
1759 /* Property accessors for the type data location. */
1760 #define TYPE_DATA_LOCATION(thistype) \
1761 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1762 #define TYPE_DATA_LOCATION_BATON(thistype) \
1763 TYPE_DATA_LOCATION (thistype)->data.baton
1764 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1765 (TYPE_DATA_LOCATION (thistype)->const_val ())
1766 #define TYPE_DATA_LOCATION_KIND(thistype) \
1767 (TYPE_DATA_LOCATION (thistype)->kind ())
1768 #define TYPE_DYNAMIC_LENGTH(thistype) \
1769 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1771 /* Property accessors for the type allocated/associated. */
1772 #define TYPE_ALLOCATED_PROP(thistype) \
1773 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1774 #define TYPE_ASSOCIATED_PROP(thistype) \
1775 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1779 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1780 /* Do not call this, use TYPE_SELF_TYPE. */
1781 extern struct type
*internal_type_self_type (struct type
*);
1782 extern void set_type_self_type (struct type
*, struct type
*);
1784 extern int internal_type_vptr_fieldno (struct type
*);
1785 extern void set_type_vptr_fieldno (struct type
*, int);
1786 extern struct type
*internal_type_vptr_basetype (struct type
*);
1787 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1788 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1789 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1791 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1792 #define TYPE_SPECIFIC_FIELD(thistype) \
1793 TYPE_MAIN_TYPE(thistype)->type_specific_field
1794 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1795 where we're trying to print an Ada array using the C language.
1796 In that case, there is no "cplus_stuff", but the C language assumes
1797 that there is. What we do, in that case, is pretend that there is
1798 an implicit one which is the default cplus stuff. */
1799 #define TYPE_CPLUS_SPECIFIC(thistype) \
1800 (!HAVE_CPLUS_STRUCT(thistype) \
1801 ? (struct cplus_struct_type*)&cplus_struct_default \
1802 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1803 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1804 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1805 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1806 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1807 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1808 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1809 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1810 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1811 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1812 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1813 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1814 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1815 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1816 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1817 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1818 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1820 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1821 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1822 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1824 #define FIELD_NAME(thisfld) ((thisfld).name)
1825 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1826 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1827 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1828 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1829 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1830 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1831 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1832 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1833 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1834 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1835 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1836 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1837 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1838 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1839 #define SET_FIELD_PHYSNAME(thisfld, name) \
1840 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1841 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1842 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1843 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1844 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1845 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1846 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1847 FIELD_DWARF_BLOCK (thisfld) = (addr))
1848 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1849 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1851 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1852 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1853 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1854 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1855 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1856 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1857 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1858 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1859 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1860 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1862 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1863 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1864 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1865 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1866 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1867 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1868 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1869 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1870 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1871 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1872 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1873 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1874 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1875 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1876 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1877 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1878 #define TYPE_FIELD_PRIVATE(thistype, n) \
1879 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1880 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1881 #define TYPE_FIELD_PROTECTED(thistype, n) \
1882 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1883 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1884 #define TYPE_FIELD_IGNORE(thistype, n) \
1885 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1886 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1887 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1888 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1889 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1891 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1892 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1893 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1894 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1895 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1897 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1898 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1899 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1900 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1901 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1902 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1904 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1905 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1906 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1907 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1908 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1909 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1910 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1911 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1912 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1913 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1914 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1915 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1916 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1917 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1918 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1919 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1920 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1922 /* Accessors for typedefs defined by a class. */
1923 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1924 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1925 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1926 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1927 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1928 TYPE_TYPEDEF_FIELD (thistype, n).name
1929 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1930 TYPE_TYPEDEF_FIELD (thistype, n).type
1931 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1932 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1933 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1934 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1935 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1936 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1938 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1939 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1940 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1941 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1942 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1943 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1944 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1945 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1946 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1947 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1948 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1949 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1950 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1951 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1953 #define TYPE_IS_OPAQUE(thistype) \
1954 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1955 || ((thistype)->code () == TYPE_CODE_UNION)) \
1956 && ((thistype)->num_fields () == 0) \
1957 && (!HAVE_CPLUS_STRUCT (thistype) \
1958 || TYPE_NFN_FIELDS (thistype) == 0) \
1959 && ((thistype)->is_stub () || !(thistype)->stub_is_supported ()))
1961 /* * A helper macro that returns the name of a type or "unnamed type"
1962 if the type has no name. */
1964 #define TYPE_SAFE_NAME(type) \
1965 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1967 /* * A helper macro that returns the name of an error type. If the
1968 type has a name, it is used; otherwise, a default is used. */
1970 #define TYPE_ERROR_NAME(type) \
1971 (type->name () ? type->name () : _("<error type>"))
1973 /* Given TYPE, return its floatformat. */
1974 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1978 /* Integral types. */
1980 /* Implicit size/sign (based on the architecture's ABI). */
1981 struct type
*builtin_void
;
1982 struct type
*builtin_char
;
1983 struct type
*builtin_short
;
1984 struct type
*builtin_int
;
1985 struct type
*builtin_long
;
1986 struct type
*builtin_signed_char
;
1987 struct type
*builtin_unsigned_char
;
1988 struct type
*builtin_unsigned_short
;
1989 struct type
*builtin_unsigned_int
;
1990 struct type
*builtin_unsigned_long
;
1991 struct type
*builtin_bfloat16
;
1992 struct type
*builtin_half
;
1993 struct type
*builtin_float
;
1994 struct type
*builtin_double
;
1995 struct type
*builtin_long_double
;
1996 struct type
*builtin_complex
;
1997 struct type
*builtin_double_complex
;
1998 struct type
*builtin_string
;
1999 struct type
*builtin_bool
;
2000 struct type
*builtin_long_long
;
2001 struct type
*builtin_unsigned_long_long
;
2002 struct type
*builtin_decfloat
;
2003 struct type
*builtin_decdouble
;
2004 struct type
*builtin_declong
;
2006 /* "True" character types.
2007 We use these for the '/c' print format, because c_char is just a
2008 one-byte integral type, which languages less laid back than C
2009 will print as ... well, a one-byte integral type. */
2010 struct type
*builtin_true_char
;
2011 struct type
*builtin_true_unsigned_char
;
2013 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
2014 is for when an architecture needs to describe a register that has
2016 struct type
*builtin_int0
;
2017 struct type
*builtin_int8
;
2018 struct type
*builtin_uint8
;
2019 struct type
*builtin_int16
;
2020 struct type
*builtin_uint16
;
2021 struct type
*builtin_int24
;
2022 struct type
*builtin_uint24
;
2023 struct type
*builtin_int32
;
2024 struct type
*builtin_uint32
;
2025 struct type
*builtin_int64
;
2026 struct type
*builtin_uint64
;
2027 struct type
*builtin_int128
;
2028 struct type
*builtin_uint128
;
2030 /* Wide character types. */
2031 struct type
*builtin_char16
;
2032 struct type
*builtin_char32
;
2033 struct type
*builtin_wchar
;
2035 /* Pointer types. */
2037 /* * `pointer to data' type. Some target platforms use an implicitly
2038 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
2039 struct type
*builtin_data_ptr
;
2041 /* * `pointer to function (returning void)' type. Harvard
2042 architectures mean that ABI function and code pointers are not
2043 interconvertible. Similarly, since ANSI, C standards have
2044 explicitly said that pointers to functions and pointers to data
2045 are not interconvertible --- that is, you can't cast a function
2046 pointer to void * and back, and expect to get the same value.
2047 However, all function pointer types are interconvertible, so void
2048 (*) () can server as a generic function pointer. */
2050 struct type
*builtin_func_ptr
;
2052 /* * `function returning pointer to function (returning void)' type.
2053 The final void return type is not significant for it. */
2055 struct type
*builtin_func_func
;
2057 /* Special-purpose types. */
2059 /* * This type is used to represent a GDB internal function. */
2061 struct type
*internal_fn
;
2063 /* * This type is used to represent an xmethod. */
2064 struct type
*xmethod
;
2067 /* * Return the type table for the specified architecture. */
2069 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
2071 /* * Per-objfile types used by symbol readers. */
2075 /* Basic types based on the objfile architecture. */
2076 struct type
*builtin_void
;
2077 struct type
*builtin_char
;
2078 struct type
*builtin_short
;
2079 struct type
*builtin_int
;
2080 struct type
*builtin_long
;
2081 struct type
*builtin_long_long
;
2082 struct type
*builtin_signed_char
;
2083 struct type
*builtin_unsigned_char
;
2084 struct type
*builtin_unsigned_short
;
2085 struct type
*builtin_unsigned_int
;
2086 struct type
*builtin_unsigned_long
;
2087 struct type
*builtin_unsigned_long_long
;
2088 struct type
*builtin_half
;
2089 struct type
*builtin_float
;
2090 struct type
*builtin_double
;
2091 struct type
*builtin_long_double
;
2093 /* * This type is used to represent symbol addresses. */
2094 struct type
*builtin_core_addr
;
2096 /* * This type represents a type that was unrecognized in symbol
2098 struct type
*builtin_error
;
2100 /* * Types used for symbols with no debug information. */
2101 struct type
*nodebug_text_symbol
;
2102 struct type
*nodebug_text_gnu_ifunc_symbol
;
2103 struct type
*nodebug_got_plt_symbol
;
2104 struct type
*nodebug_data_symbol
;
2105 struct type
*nodebug_unknown_symbol
;
2106 struct type
*nodebug_tls_symbol
;
2109 /* * Return the type table for the specified objfile. */
2111 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
2113 /* Explicit floating-point formats. See "floatformat.h". */
2114 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
2115 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
2116 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2117 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2118 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2119 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2120 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2121 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2122 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2123 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2124 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2125 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2126 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2128 /* Allocate space for storing data associated with a particular
2129 type. We ensure that the space is allocated using the same
2130 mechanism that was used to allocate the space for the type
2131 structure itself. I.e. if the type is on an objfile's
2132 objfile_obstack, then the space for data associated with that type
2133 will also be allocated on the objfile_obstack. If the type is
2134 associated with a gdbarch, then the space for data associated with that
2135 type will also be allocated on the gdbarch_obstack.
2137 If a type is not associated with neither an objfile or a gdbarch then
2138 you should not use this macro to allocate space for data, instead you
2139 should call xmalloc directly, and ensure the memory is correctly freed
2140 when it is no longer needed. */
2142 #define TYPE_ALLOC(t,size) \
2143 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2144 ? &TYPE_OBJFILE (t)->objfile_obstack \
2145 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2149 /* See comment on TYPE_ALLOC. */
2151 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2153 /* Use alloc_type to allocate a type owned by an objfile. Use
2154 alloc_type_arch to allocate a type owned by an architecture. Use
2155 alloc_type_copy to allocate a type with the same owner as a
2156 pre-existing template type, no matter whether objfile or
2158 extern struct type
*alloc_type (struct objfile
*);
2159 extern struct type
*alloc_type_arch (struct gdbarch
*);
2160 extern struct type
*alloc_type_copy (const struct type
*);
2162 /* * Return the type's architecture. For types owned by an
2163 architecture, that architecture is returned. For types owned by an
2164 objfile, that objfile's architecture is returned. */
2166 extern struct gdbarch
*get_type_arch (const struct type
*);
2168 /* * This returns the target type (or NULL) of TYPE, also skipping
2171 extern struct type
*get_target_type (struct type
*type
);
2173 /* Return the equivalent of TYPE_LENGTH, but in number of target
2174 addressable memory units of the associated gdbarch instead of bytes. */
2176 extern unsigned int type_length_units (struct type
*type
);
2178 /* * Helper function to construct objfile-owned types. */
2180 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2182 extern struct type
*init_integer_type (struct objfile
*, int, int,
2184 extern struct type
*init_character_type (struct objfile
*, int, int,
2186 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2188 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2189 const struct floatformat
**,
2190 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2191 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2192 extern struct type
*init_complex_type (const char *, struct type
*);
2193 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2196 /* Helper functions to construct architecture-owned types. */
2197 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2199 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2201 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2203 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2205 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2206 const struct floatformat
**);
2207 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2208 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2211 /* Helper functions to construct a struct or record type. An
2212 initially empty type is created using arch_composite_type().
2213 Fields are then added using append_composite_type_field*(). A union
2214 type has its size set to the largest field. A struct type has each
2215 field packed against the previous. */
2217 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2218 const char *name
, enum type_code code
);
2219 extern void append_composite_type_field (struct type
*t
, const char *name
,
2220 struct type
*field
);
2221 extern void append_composite_type_field_aligned (struct type
*t
,
2225 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2226 struct type
*field
);
2228 /* Helper functions to construct a bit flags type. An initially empty
2229 type is created using arch_flag_type(). Flags are then added using
2230 append_flag_type_field() and append_flag_type_flag(). */
2231 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2232 const char *name
, int bit
);
2233 extern void append_flags_type_field (struct type
*type
,
2234 int start_bitpos
, int nr_bits
,
2235 struct type
*field_type
, const char *name
);
2236 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2239 extern void make_vector_type (struct type
*array_type
);
2240 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2242 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2243 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2244 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2247 extern struct type
*make_reference_type (struct type
*, struct type
**,
2250 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2252 extern struct type
*make_restrict_type (struct type
*);
2254 extern struct type
*make_unqualified_type (struct type
*);
2256 extern struct type
*make_atomic_type (struct type
*);
2258 extern void replace_type (struct type
*, struct type
*);
2260 extern type_instance_flags address_space_name_to_type_instance_flags
2261 (struct gdbarch
*, const char *);
2263 extern const char *address_space_type_instance_flags_to_name
2264 (struct gdbarch
*, type_instance_flags
);
2266 extern struct type
*make_type_with_address_space
2267 (struct type
*type
, type_instance_flags space_identifier
);
2269 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2271 extern struct type
*lookup_methodptr_type (struct type
*);
2273 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2274 struct type
*to_type
, struct field
*args
,
2275 int nargs
, int varargs
);
2277 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2280 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2282 extern struct type
*allocate_stub_method (struct type
*);
2284 extern const char *type_name_or_error (struct type
*type
);
2288 /* The field of the element, or NULL if no element was found. */
2289 struct field
*field
;
2291 /* The bit offset of the element in the parent structure. */
2295 /* Given a type TYPE, lookup the field and offset of the component named
2298 TYPE can be either a struct or union, or a pointer or reference to
2299 a struct or union. If it is a pointer or reference, its target
2300 type is automatically used. Thus '.' and '->' are interchangable,
2301 as specified for the definitions of the expression element types
2302 STRUCTOP_STRUCT and STRUCTOP_PTR.
2304 If NOERR is nonzero, the returned structure will have field set to
2305 NULL if there is no component named NAME.
2307 If the component NAME is a field in an anonymous substructure of
2308 TYPE, the returned offset is a "global" offset relative to TYPE
2309 rather than an offset within the substructure. */
2311 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2313 /* Given a type TYPE, lookup the type of the component named NAME.
2315 TYPE can be either a struct or union, or a pointer or reference to
2316 a struct or union. If it is a pointer or reference, its target
2317 type is automatically used. Thus '.' and '->' are interchangable,
2318 as specified for the definitions of the expression element types
2319 STRUCTOP_STRUCT and STRUCTOP_PTR.
2321 If NOERR is nonzero, return NULL if there is no component named
2324 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2326 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2328 extern struct type
*lookup_pointer_type (struct type
*);
2330 extern struct type
*make_function_type (struct type
*, struct type
**);
2332 extern struct type
*lookup_function_type (struct type
*);
2334 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2338 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2342 extern struct type
*create_array_type_with_stride
2343 (struct type
*, struct type
*, struct type
*,
2344 struct dynamic_prop
*, unsigned int);
2346 extern struct type
*create_range_type (struct type
*, struct type
*,
2347 const struct dynamic_prop
*,
2348 const struct dynamic_prop
*,
2351 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2352 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2355 extern struct type
* create_range_type_with_stride
2356 (struct type
*result_type
, struct type
*index_type
,
2357 const struct dynamic_prop
*low_bound
,
2358 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2359 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2361 extern struct type
*create_array_type (struct type
*, struct type
*,
2364 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2366 extern struct type
*create_string_type (struct type
*, struct type
*,
2368 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2370 extern struct type
*create_set_type (struct type
*, struct type
*);
2372 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2375 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2378 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2380 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2382 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2383 ADDR specifies the location of the variable the type is bound to.
2384 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2385 static properties is returned. */
2386 extern struct type
*resolve_dynamic_type
2387 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2390 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2391 extern int is_dynamic_type (struct type
*type
);
2393 extern struct type
*check_typedef (struct type
*);
2395 extern void check_stub_method_group (struct type
*, int);
2397 extern char *gdb_mangle_name (struct type
*, int, int);
2399 extern struct type
*lookup_typename (const struct language_defn
*,
2400 const char *, const struct block
*, int);
2402 extern struct type
*lookup_template_type (const char *, struct type
*,
2403 const struct block
*);
2405 extern int get_vptr_fieldno (struct type
*, struct type
**);
2407 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2409 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2410 LONGEST
*high_bound
);
2412 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2414 extern int class_types_same_p (const struct type
*, const struct type
*);
2416 extern int is_ancestor (struct type
*, struct type
*);
2418 extern int is_public_ancestor (struct type
*, struct type
*);
2420 extern int is_unique_ancestor (struct type
*, struct value
*);
2422 /* Overload resolution */
2424 /* * Badness if parameter list length doesn't match arg list length. */
2425 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2427 /* * Dummy badness value for nonexistent parameter positions. */
2428 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2429 /* * Badness if no conversion among types. */
2430 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2432 /* * Badness of an exact match. */
2433 extern const struct rank EXACT_MATCH_BADNESS
;
2435 /* * Badness of integral promotion. */
2436 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2437 /* * Badness of floating promotion. */
2438 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2439 /* * Badness of converting a derived class pointer
2440 to a base class pointer. */
2441 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2442 /* * Badness of integral conversion. */
2443 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2444 /* * Badness of floating conversion. */
2445 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2446 /* * Badness of integer<->floating conversions. */
2447 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2448 /* * Badness of conversion of pointer to void pointer. */
2449 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2450 /* * Badness of conversion to boolean. */
2451 extern const struct rank BOOL_CONVERSION_BADNESS
;
2452 /* * Badness of converting derived to base class. */
2453 extern const struct rank BASE_CONVERSION_BADNESS
;
2454 /* * Badness of converting from non-reference to reference. Subrank
2455 is the type of reference conversion being done. */
2456 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2457 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2458 /* * Conversion to rvalue reference. */
2459 #define REFERENCE_CONVERSION_RVALUE 1
2460 /* * Conversion to const lvalue reference. */
2461 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2463 /* * Badness of converting integer 0 to NULL pointer. */
2464 extern const struct rank NULL_POINTER_CONVERSION
;
2465 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2467 extern const struct rank CV_CONVERSION_BADNESS
;
2468 #define CV_CONVERSION_CONST 1
2469 #define CV_CONVERSION_VOLATILE 2
2471 /* Non-standard conversions allowed by the debugger */
2473 /* * Converting a pointer to an int is usually OK. */
2474 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2476 /* * Badness of converting a (non-zero) integer constant
2478 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2480 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2481 extern int compare_ranks (struct rank a
, struct rank b
);
2483 extern int compare_badness (const badness_vector
&,
2484 const badness_vector
&);
2486 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2487 gdb::array_view
<value
*> args
);
2489 extern struct rank
rank_one_type (struct type
*, struct type
*,
2492 extern void recursive_dump_type (struct type
*, int);
2494 extern int field_is_static (struct field
*);
2498 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2499 const struct value_print_options
*,
2500 int, struct ui_file
*);
2502 extern int can_dereference (struct type
*);
2504 extern int is_integral_type (struct type
*);
2506 extern int is_floating_type (struct type
*);
2508 extern int is_scalar_type (struct type
*type
);
2510 extern int is_scalar_type_recursive (struct type
*);
2512 extern int class_or_union_p (const struct type
*);
2514 extern void maintenance_print_type (const char *, int);
2516 extern htab_up
create_copied_types_hash (struct objfile
*objfile
);
2518 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2520 htab_t copied_types
);
2522 extern struct type
*copy_type (const struct type
*type
);
2524 extern bool types_equal (struct type
*, struct type
*);
2526 extern bool types_deeply_equal (struct type
*, struct type
*);
2528 extern int type_not_allocated (const struct type
*type
);
2530 extern int type_not_associated (const struct type
*type
);
2532 /* * When the type includes explicit byte ordering, return that.
2533 Otherwise, the byte ordering from gdbarch_byte_order for
2534 get_type_arch is returned. */
2536 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2538 /* A flag to enable printing of debugging information of C++
2541 extern unsigned int overload_debug
;
2543 #endif /* GDBTYPES_H */