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 target type of this type is a stub type, and this type needs
220 to be updated if it gets un-stubbed in check_typedef. Used for
221 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
222 based on the TYPE_LENGTH of the target type. Also, set for
223 TYPE_CODE_TYPEDEF. */
225 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
227 /* * This is a function type which appears to have a prototype. We
228 need this for function calls in order to tell us if it's necessary
229 to coerce the args, or to just do the standard conversions. This
230 is used with a short field. */
232 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
234 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
237 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
239 /* * Identify a vector type. Gcc is handling this by adding an extra
240 attribute to the array type. We slurp that in as a new flag of a
241 type. This is used only in dwarf2read.c. */
242 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
244 /* * The debugging formats (especially STABS) do not contain enough
245 information to represent all Ada types---especially those whose
246 size depends on dynamic quantities. Therefore, the GNAT Ada
247 compiler includes extra information in the form of additional type
248 definitions connected by naming conventions. This flag indicates
249 that the type is an ordinary (unencoded) GDB type that has been
250 created from the necessary run-time information, and does not need
251 further interpretation. Optionally marks ordinary, fixed-size GDB
254 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
256 /* * This debug target supports TYPE_STUB(t). In the unsupported case
257 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
258 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
259 guessed the TYPE_STUB(t) value (see dwarfread.c). */
261 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
263 /* * Not textual. By default, GDB treats all single byte integers as
264 characters (or elements of strings) unless this flag is set. */
266 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
268 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
269 address is returned by this function call. TYPE_TARGET_TYPE
270 determines the final returned function type to be presented to
273 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
275 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
276 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
277 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
279 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
280 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
281 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
283 /* * True if this type was declared using the "class" keyword. This is
284 only valid for C++ structure and enum types. If false, a structure
285 was declared as a "struct"; if true it was declared "class". For
286 enum types, this is true when "enum class" or "enum struct" was
287 used to declare the type.. */
289 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
291 /* * True if this type is a "flag" enum. A flag enum is one where all
292 the values are pairwise disjoint when "and"ed together. This
293 affects how enum values are printed. */
295 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
297 /* * Constant type. If this is set, the corresponding type has a
300 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
302 /* * Volatile type. If this is set, the corresponding type has a
303 volatile modifier. */
305 #define TYPE_VOLATILE(t) \
306 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
308 /* * Restrict type. If this is set, the corresponding type has a
309 restrict modifier. */
311 #define TYPE_RESTRICT(t) \
312 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
314 /* * Atomic type. If this is set, the corresponding type has an
317 #define TYPE_ATOMIC(t) \
318 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
320 /* * True if this type represents either an lvalue or lvalue reference type. */
322 #define TYPE_IS_REFERENCE(t) \
323 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
325 /* * True if this type is allocatable. */
326 #define TYPE_IS_ALLOCATABLE(t) \
327 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
329 /* * True if this type has variant parts. */
330 #define TYPE_HAS_VARIANT_PARTS(t) \
331 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
333 /* * True if this type has a dynamic length. */
334 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
335 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
337 /* * Instruction-space delimited type. This is for Harvard architectures
338 which have separate instruction and data address spaces (and perhaps
341 GDB usually defines a flat address space that is a superset of the
342 architecture's two (or more) address spaces, but this is an extension
343 of the architecture's model.
345 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
346 resides in instruction memory, even if its address (in the extended
347 flat address space) does not reflect this.
349 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
350 corresponding type resides in the data memory space, even if
351 this is not indicated by its (flat address space) address.
353 If neither flag is set, the default space for functions / methods
354 is instruction space, and for data objects is data memory. */
356 #define TYPE_CODE_SPACE(t) \
357 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
359 #define TYPE_DATA_SPACE(t) \
360 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
362 /* * Address class flags. Some environments provide for pointers
363 whose size is different from that of a normal pointer or address
364 types where the bits are interpreted differently than normal
365 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
366 target specific ways to represent these different types of address
369 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
370 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
371 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
372 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
373 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
374 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
375 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
376 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
378 /* * Information about a single discriminant. */
380 struct discriminant_range
382 /* * The range of values for the variant. This is an inclusive
386 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
387 is true if this should be an unsigned comparison; false for
389 bool contains (ULONGEST value
, bool is_unsigned
) const
392 return value
>= low
&& value
<= high
;
393 LONGEST valuel
= (LONGEST
) value
;
394 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
400 /* * A single variant. A variant has a list of discriminant values.
401 When the discriminator matches one of these, the variant is
402 enabled. Each variant controls zero or more fields; and may also
403 control other variant parts as well. This struct corresponds to
404 DW_TAG_variant in DWARF. */
406 struct variant
: allocate_on_obstack
408 /* * The discriminant ranges for this variant. */
409 gdb::array_view
<discriminant_range
> discriminants
;
411 /* * The fields controlled by this variant. This is inclusive on
412 the low end and exclusive on the high end. A variant may not
413 control any fields, in which case the two values will be equal.
414 These are indexes into the type's array of fields. */
418 /* * Variant parts controlled by this variant. */
419 gdb::array_view
<variant_part
> parts
;
421 /* * Return true if this is the default variant. The default
422 variant can be recognized because it has no associated
424 bool is_default () const
426 return discriminants
.empty ();
429 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
430 if this should be an unsigned comparison; false for signed. */
431 bool matches (ULONGEST value
, bool is_unsigned
) const;
434 /* * A variant part. Each variant part has an optional discriminant
435 and holds an array of variants. This struct corresponds to
436 DW_TAG_variant_part in DWARF. */
438 struct variant_part
: allocate_on_obstack
440 /* * The index of the discriminant field in the outer type. This is
441 an index into the type's array of fields. If this is -1, there
442 is no discriminant, and only the default variant can be
443 considered to be selected. */
444 int discriminant_index
;
446 /* * True if this discriminant is unsigned; false if signed. This
447 comes from the type of the discriminant. */
450 /* * The variants that are controlled by this variant part. Note
451 that these will always be sorted by field number. */
452 gdb::array_view
<variant
> variants
;
456 enum dynamic_prop_kind
458 PROP_UNDEFINED
, /* Not defined. */
459 PROP_CONST
, /* Constant. */
460 PROP_ADDR_OFFSET
, /* Address offset. */
461 PROP_LOCEXPR
, /* Location expression. */
462 PROP_LOCLIST
, /* Location list. */
463 PROP_VARIANT_PARTS
, /* Variant parts. */
464 PROP_TYPE
, /* Type. */
467 union dynamic_prop_data
469 /* Storage for constant property. */
473 /* Storage for dynamic property. */
477 /* Storage of variant parts for a type. A type with variant parts
478 has all its fields "linearized" -- stored in a single field
479 array, just as if they had all been declared that way. The
480 variant parts are attached via a dynamic property, and then are
481 used to control which fields end up in the final type during
482 dynamic type resolution. */
484 const gdb::array_view
<variant_part
> *variant_parts
;
486 /* Once a variant type is resolved, we may want to be able to go
487 from the resolved type to the original type. In this case we
488 rewrite the property's kind and set this field. */
490 struct type
*original_type
;
493 /* * Used to store a dynamic property. */
497 dynamic_prop_kind
kind () const
502 void set_undefined ()
504 m_kind
= PROP_UNDEFINED
;
507 LONGEST
const_val () const
509 gdb_assert (m_kind
== PROP_CONST
);
511 return m_data
.const_val
;
514 void set_const_val (LONGEST const_val
)
517 m_data
.const_val
= const_val
;
522 gdb_assert (m_kind
== PROP_LOCEXPR
523 || m_kind
== PROP_LOCLIST
524 || m_kind
== PROP_ADDR_OFFSET
);
529 void set_locexpr (void *baton
)
531 m_kind
= PROP_LOCEXPR
;
532 m_data
.baton
= baton
;
535 void set_loclist (void *baton
)
537 m_kind
= PROP_LOCLIST
;
538 m_data
.baton
= baton
;
541 void set_addr_offset (void *baton
)
543 m_kind
= PROP_ADDR_OFFSET
;
544 m_data
.baton
= baton
;
547 const gdb::array_view
<variant_part
> *variant_parts () const
549 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
551 return m_data
.variant_parts
;
554 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
556 m_kind
= PROP_VARIANT_PARTS
;
557 m_data
.variant_parts
= variant_parts
;
560 struct type
*original_type () const
562 gdb_assert (m_kind
== PROP_TYPE
);
564 return m_data
.original_type
;
567 void set_original_type (struct type
*original_type
)
570 m_data
.original_type
= original_type
;
573 /* Determine which field of the union dynamic_prop.data is used. */
574 enum dynamic_prop_kind m_kind
;
576 /* Storage for dynamic or static value. */
577 union dynamic_prop_data m_data
;
580 /* Compare two dynamic_prop objects for equality. dynamic_prop
581 instances are equal iff they have the same type and storage. */
582 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
584 /* Compare two dynamic_prop objects for inequality. */
585 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
590 /* * Define a type's dynamic property node kind. */
591 enum dynamic_prop_node_kind
593 /* A property providing a type's data location.
594 Evaluating this field yields to the location of an object's data. */
595 DYN_PROP_DATA_LOCATION
,
597 /* A property representing DW_AT_allocated. The presence of this attribute
598 indicates that the object of the type can be allocated/deallocated. */
601 /* A property representing DW_AT_associated. The presence of this attribute
602 indicated that the object of the type can be associated. */
605 /* A property providing an array's byte stride. */
606 DYN_PROP_BYTE_STRIDE
,
608 /* A property holding variant parts. */
609 DYN_PROP_VARIANT_PARTS
,
611 /* A property holding the size of the type. */
615 /* * List for dynamic type attributes. */
616 struct dynamic_prop_list
618 /* The kind of dynamic prop in this node. */
619 enum dynamic_prop_node_kind prop_kind
;
621 /* The dynamic property itself. */
622 struct dynamic_prop prop
;
624 /* A pointer to the next dynamic property. */
625 struct dynamic_prop_list
*next
;
628 /* * Determine which field of the union main_type.fields[x].loc is
633 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
634 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
635 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
636 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
637 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
640 /* * A discriminant to determine which field in the
641 main_type.type_specific union is being used, if any.
643 For types such as TYPE_CODE_FLT, the use of this
644 discriminant is really redundant, as we know from the type code
645 which field is going to be used. As such, it would be possible to
646 reduce the size of this enum in order to save a bit or two for
647 other fields of struct main_type. But, since we still have extra
648 room , and for the sake of clarity and consistency, we treat all fields
649 of the union the same way. */
651 enum type_specific_kind
654 TYPE_SPECIFIC_CPLUS_STUFF
,
655 TYPE_SPECIFIC_GNAT_STUFF
,
656 TYPE_SPECIFIC_FLOATFORMAT
,
657 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
659 TYPE_SPECIFIC_SELF_TYPE
664 struct objfile
*objfile
;
665 struct gdbarch
*gdbarch
;
670 /* * Position of this field, counting in bits from start of
671 containing structure. For big-endian targets, it is the bit
672 offset to the MSB. For little-endian targets, it is the bit
673 offset to the LSB. */
680 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
681 physaddr is the location (in the target) of the static
682 field. Otherwise, physname is the mangled label of the
686 const char *physname
;
688 /* * The field location can be computed by evaluating the
689 following DWARF block. Its DATA is allocated on
690 objfile_obstack - no CU load is needed to access it. */
692 struct dwarf2_locexpr_baton
*dwarf_block
;
697 struct type
*type () const
702 void set_type (struct type
*type
)
707 union field_location loc
;
709 /* * For a function or member type, this is 1 if the argument is
710 marked artificial. Artificial arguments should not be shown
711 to the user. For TYPE_CODE_RANGE it is set if the specific
712 bound is not defined. */
714 unsigned int artificial
: 1;
716 /* * Discriminant for union field_location. */
718 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
720 /* * Size of this field, in bits, or zero if not packed.
721 If non-zero in an array type, indicates the element size in
722 bits (used only in Ada at the moment).
723 For an unpacked field, the field's type's length
724 says how many bytes the field occupies. */
726 unsigned int bitsize
: 28;
728 /* * In a struct or union type, type of this field.
729 - In a function or member type, type of this argument.
730 - In an array type, the domain-type of the array. */
734 /* * Name of field, value or argument.
735 NULL for range bounds, array domains, and member function
743 ULONGEST
bit_stride () const
745 if (this->flag_is_byte_stride
)
746 return this->stride
.const_val () * 8;
748 return this->stride
.const_val ();
751 /* * Low bound of range. */
753 struct dynamic_prop low
;
755 /* * High bound of range. */
757 struct dynamic_prop high
;
759 /* The stride value for this range. This can be stored in bits or bytes
760 based on the value of BYTE_STRIDE_P. It is optional to have a stride
761 value, if this range has no stride value defined then this will be set
762 to the constant zero. */
764 struct dynamic_prop stride
;
766 /* * The bias. Sometimes a range value is biased before storage.
767 The bias is added to the stored bits to form the true value. */
771 /* True if HIGH range bound contains the number of elements in the
772 subrange. This affects how the final high bound is computed. */
774 unsigned int flag_upper_bound_is_count
: 1;
776 /* True if LOW or/and HIGH are resolved into a static bound from
779 unsigned int flag_bound_evaluated
: 1;
781 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
783 unsigned int flag_is_byte_stride
: 1;
786 /* Compare two range_bounds objects for equality. Simply does
787 memberwise comparison. */
788 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
790 /* Compare two range_bounds objects for inequality. */
791 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
798 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
799 point to cplus_struct_default, a default static instance of a
800 struct cplus_struct_type. */
802 struct cplus_struct_type
*cplus_stuff
;
804 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
805 provides additional information. */
807 struct gnat_aux_type
*gnat_stuff
;
809 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
810 floatformat object that describes the floating-point value
811 that resides within the type. */
813 const struct floatformat
*floatformat
;
815 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
817 struct func_type
*func_stuff
;
819 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
820 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
823 struct type
*self_type
;
826 /* * Main structure representing a type in GDB.
828 This structure is space-critical. Its layout has been tweaked to
829 reduce the space used. */
833 /* * Code for kind of type. */
835 ENUM_BITFIELD(type_code
) code
: 8;
837 /* * Flags about this type. These fields appear at this location
838 because they packs nicely here. See the TYPE_* macros for
839 documentation about these fields. */
841 unsigned int m_flag_unsigned
: 1;
842 unsigned int m_flag_nosign
: 1;
843 unsigned int m_flag_stub
: 1;
844 unsigned int flag_target_stub
: 1;
845 unsigned int flag_prototyped
: 1;
846 unsigned int flag_varargs
: 1;
847 unsigned int flag_vector
: 1;
848 unsigned int flag_stub_supported
: 1;
849 unsigned int flag_gnu_ifunc
: 1;
850 unsigned int flag_fixed_instance
: 1;
851 unsigned int flag_objfile_owned
: 1;
852 unsigned int flag_endianity_not_default
: 1;
854 /* * True if this type was declared with "class" rather than
857 unsigned int flag_declared_class
: 1;
859 /* * True if this is an enum type with disjoint values. This
860 affects how the enum is printed. */
862 unsigned int flag_flag_enum
: 1;
864 /* * A discriminant telling us which field of the type_specific
865 union is being used for this type, if any. */
867 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
869 /* * Number of fields described for this type. This field appears
870 at this location because it packs nicely here. */
874 /* * Name of this type, or NULL if none.
876 This is used for printing only. For looking up a name, look for
877 a symbol in the VAR_DOMAIN. This is generally allocated in the
878 objfile's obstack. However coffread.c uses malloc. */
882 /* * Every type is now associated with a particular objfile, and the
883 type is allocated on the objfile_obstack for that objfile. One
884 problem however, is that there are times when gdb allocates new
885 types while it is not in the process of reading symbols from a
886 particular objfile. Fortunately, these happen when the type
887 being created is a derived type of an existing type, such as in
888 lookup_pointer_type(). So we can just allocate the new type
889 using the same objfile as the existing type, but to do this we
890 need a backpointer to the objfile from the existing type. Yes
891 this is somewhat ugly, but without major overhaul of the internal
892 type system, it can't be avoided for now. */
894 union type_owner owner
;
896 /* * For a pointer type, describes the type of object pointed to.
897 - For an array type, describes the type of the elements.
898 - For a function or method type, describes the type of the return value.
899 - For a range type, describes the type of the full range.
900 - For a complex type, describes the type of each coordinate.
901 - For a special record or union type encoding a dynamic-sized type
902 in GNAT, a memoized pointer to a corresponding static version of
904 - Unused otherwise. */
906 struct type
*target_type
;
908 /* * For structure and union types, a description of each field.
909 For set and pascal array types, there is one "field",
910 whose type is the domain type of the set or array.
911 For range types, there are two "fields",
912 the minimum and maximum values (both inclusive).
913 For enum types, each possible value is described by one "field".
914 For a function or method type, a "field" for each parameter.
915 For C++ classes, there is one field for each base class (if it is
916 a derived class) plus one field for each class data member. Member
917 functions are recorded elsewhere.
919 Using a pointer to a separate array of fields
920 allows all types to have the same size, which is useful
921 because we can allocate the space for a type before
922 we know what to put in it. */
926 struct field
*fields
;
928 /* * Union member used for range types. */
930 struct range_bounds
*bounds
;
932 /* If this is a scalar type, then this is its corresponding
934 struct type
*complex_type
;
938 /* * Slot to point to additional language-specific fields of this
941 union type_specific type_specific
;
943 /* * Contains all dynamic type properties. */
944 struct dynamic_prop_list
*dyn_prop_list
;
947 /* * Number of bits allocated for alignment. */
949 #define TYPE_ALIGN_BITS 8
951 /* * A ``struct type'' describes a particular instance of a type, with
952 some particular qualification. */
956 /* Get the type code of this type.
958 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
959 type, you need to do `check_typedef (type)->code ()`. */
960 type_code
code () const
962 return this->main_type
->code
;
965 /* Set the type code of this type. */
966 void set_code (type_code code
)
968 this->main_type
->code
= code
;
971 /* Get the name of this type. */
972 const char *name () const
974 return this->main_type
->name
;
977 /* Set the name of this type. */
978 void set_name (const char *name
)
980 this->main_type
->name
= name
;
983 /* Get the number of fields of this type. */
984 int num_fields () const
986 return this->main_type
->nfields
;
989 /* Set the number of fields of this type. */
990 void set_num_fields (int num_fields
)
992 this->main_type
->nfields
= num_fields
;
995 /* Get the fields array of this type. */
996 struct field
*fields () const
998 return this->main_type
->flds_bnds
.fields
;
1001 /* Get the field at index IDX. */
1002 struct field
&field (int idx
) const
1004 return this->fields ()[idx
];
1007 /* Set the fields array of this type. */
1008 void set_fields (struct field
*fields
)
1010 this->main_type
->flds_bnds
.fields
= fields
;
1013 type
*index_type () const
1015 return this->field (0).type ();
1018 void set_index_type (type
*index_type
)
1020 this->field (0).set_type (index_type
);
1023 /* Get the bounds bounds of this type. The type must be a range type. */
1024 range_bounds
*bounds () const
1026 switch (this->code ())
1028 case TYPE_CODE_RANGE
:
1029 return this->main_type
->flds_bnds
.bounds
;
1031 case TYPE_CODE_ARRAY
:
1032 case TYPE_CODE_STRING
:
1033 return this->index_type ()->bounds ();
1036 gdb_assert_not_reached
1037 ("type::bounds called on type with invalid code");
1041 /* Set the bounds of this type. The type must be a range type. */
1042 void set_bounds (range_bounds
*bounds
)
1044 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1046 this->main_type
->flds_bnds
.bounds
= bounds
;
1049 ULONGEST
bit_stride () const
1051 return this->bounds ()->bit_stride ();
1054 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1055 the type is signed (unless TYPE_NOSIGN is set). */
1057 bool is_unsigned () const
1059 return this->main_type
->m_flag_unsigned
;
1062 void set_is_unsigned (bool is_unsigned
)
1064 this->main_type
->m_flag_unsigned
= is_unsigned
;
1067 /* No sign for this type. In C++, "char", "signed char", and
1068 "unsigned char" are distinct types; so we need an extra flag to
1069 indicate the absence of a sign! */
1071 bool has_no_signedness () const
1073 return this->main_type
->m_flag_nosign
;
1076 void set_has_no_signedness (bool has_no_signedness
)
1078 this->main_type
->m_flag_nosign
= has_no_signedness
;
1081 /* This appears in a type's flags word if it is a stub type (e.g.,
1082 if someone referenced a type that wasn't defined in a source file
1083 via (struct sir_not_appearing_in_this_film *)). */
1085 bool is_stub () const
1087 return this->main_type
->m_flag_stub
;
1090 void set_is_stub (bool is_stub
)
1092 this->main_type
->m_flag_stub
= is_stub
;
1095 /* * Return the dynamic property of the requested KIND from this type's
1096 list of dynamic properties. */
1097 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1099 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1100 property to this type.
1102 This function assumes that this type is objfile-owned. */
1103 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1105 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1106 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1108 /* * Type that is a pointer to this type.
1109 NULL if no such pointer-to type is known yet.
1110 The debugger may add the address of such a type
1111 if it has to construct one later. */
1113 struct type
*pointer_type
;
1115 /* * C++: also need a reference type. */
1117 struct type
*reference_type
;
1119 /* * A C++ rvalue reference type added in C++11. */
1121 struct type
*rvalue_reference_type
;
1123 /* * Variant chain. This points to a type that differs from this
1124 one only in qualifiers and length. Currently, the possible
1125 qualifiers are const, volatile, code-space, data-space, and
1126 address class. The length may differ only when one of the
1127 address class flags are set. The variants are linked in a
1128 circular ring and share MAIN_TYPE. */
1132 /* * The alignment for this type. Zero means that the alignment was
1133 not specified in the debug info. Note that this is stored in a
1134 funny way: as the log base 2 (plus 1) of the alignment; so a
1135 value of 1 means the alignment is 1, and a value of 9 means the
1136 alignment is 256. */
1138 unsigned align_log2
: TYPE_ALIGN_BITS
;
1140 /* * Flags specific to this instance of the type, indicating where
1143 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1144 binary or-ed with the target type, with a special case for
1145 address class and space class. For example if this typedef does
1146 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1147 instance flags are completely inherited from the target type. No
1148 qualifiers can be cleared by the typedef. See also
1150 unsigned instance_flags
: 9;
1152 /* * Length of storage for a value of this type. The value is the
1153 expression in host bytes of what sizeof(type) would return. This
1154 size includes padding. For example, an i386 extended-precision
1155 floating point value really only occupies ten bytes, but most
1156 ABI's declare its size to be 12 bytes, to preserve alignment.
1157 A `struct type' representing such a floating-point type would
1158 have a `length' value of 12, even though the last two bytes are
1161 Since this field is expressed in host bytes, its value is appropriate
1162 to pass to memcpy and such (it is assumed that GDB itself always runs
1163 on an 8-bits addressable architecture). However, when using it for
1164 target address arithmetic (e.g. adding it to a target address), the
1165 type_length_units function should be used in order to get the length
1166 expressed in target addressable memory units. */
1170 /* * Core type, shared by a group of qualified types. */
1172 struct main_type
*main_type
;
1178 /* * The overloaded name.
1179 This is generally allocated in the objfile's obstack.
1180 However stabsread.c sometimes uses malloc. */
1184 /* * The number of methods with this name. */
1188 /* * The list of methods. */
1190 struct fn_field
*fn_fields
;
1197 /* * If is_stub is clear, this is the mangled name which we can look
1198 up to find the address of the method (FIXME: it would be cleaner
1199 to have a pointer to the struct symbol here instead).
1201 If is_stub is set, this is the portion of the mangled name which
1202 specifies the arguments. For example, "ii", if there are two int
1203 arguments, or "" if there are no arguments. See gdb_mangle_name
1204 for the conversion from this format to the one used if is_stub is
1207 const char *physname
;
1209 /* * The function type for the method.
1211 (This comment used to say "The return value of the method", but
1212 that's wrong. The function type is expected here, i.e. something
1213 with TYPE_CODE_METHOD, and *not* the return-value type). */
1217 /* * For virtual functions. First baseclass that defines this
1218 virtual function. */
1220 struct type
*fcontext
;
1224 unsigned int is_const
:1;
1225 unsigned int is_volatile
:1;
1226 unsigned int is_private
:1;
1227 unsigned int is_protected
:1;
1228 unsigned int is_artificial
:1;
1230 /* * A stub method only has some fields valid (but they are enough
1231 to reconstruct the rest of the fields). */
1233 unsigned int is_stub
:1;
1235 /* * True if this function is a constructor, false otherwise. */
1237 unsigned int is_constructor
: 1;
1239 /* * True if this function is deleted, false otherwise. */
1241 unsigned int is_deleted
: 1;
1243 /* * DW_AT_defaulted attribute for this function. The value is one
1244 of the DW_DEFAULTED constants. */
1246 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1250 unsigned int dummy
:6;
1252 /* * Index into that baseclass's virtual function table, minus 2;
1253 else if static: VOFFSET_STATIC; else: 0. */
1255 unsigned int voffset
:16;
1257 #define VOFFSET_STATIC 1
1263 /* * Unqualified name to be prefixed by owning class qualified
1268 /* * Type this typedef named NAME represents. */
1272 /* * True if this field was declared protected, false otherwise. */
1273 unsigned int is_protected
: 1;
1275 /* * True if this field was declared private, false otherwise. */
1276 unsigned int is_private
: 1;
1279 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1280 TYPE_CODE_UNION nodes. */
1282 struct cplus_struct_type
1284 /* * Number of base classes this type derives from. The
1285 baseclasses are stored in the first N_BASECLASSES fields
1286 (i.e. the `fields' field of the struct type). The only fields
1287 of struct field that are used are: type, name, loc.bitpos. */
1289 short n_baseclasses
;
1291 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1292 All access to this field must be through TYPE_VPTR_FIELDNO as one
1293 thing it does is check whether the field has been initialized.
1294 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1295 which for portability reasons doesn't initialize this field.
1296 TYPE_VPTR_FIELDNO returns -1 for this case.
1298 If -1, we were unable to find the virtual function table pointer in
1299 initial symbol reading, and get_vptr_fieldno should be called to find
1300 it if possible. get_vptr_fieldno will update this field if possible.
1301 Otherwise the value is left at -1.
1303 Unused if this type does not have virtual functions. */
1307 /* * Number of methods with unique names. All overloaded methods
1308 with the same name count only once. */
1312 /* * Number of template arguments. */
1314 unsigned short n_template_arguments
;
1316 /* * One if this struct is a dynamic class, as defined by the
1317 Itanium C++ ABI: if it requires a virtual table pointer,
1318 because it or any of its base classes have one or more virtual
1319 member functions or virtual base classes. Minus one if not
1320 dynamic. Zero if not yet computed. */
1324 /* * The calling convention for this type, fetched from the
1325 DW_AT_calling_convention attribute. The value is one of the
1328 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1330 /* * The base class which defined the virtual function table pointer. */
1332 struct type
*vptr_basetype
;
1334 /* * For derived classes, the number of base classes is given by
1335 n_baseclasses and virtual_field_bits is a bit vector containing
1336 one bit per base class. If the base class is virtual, the
1337 corresponding bit will be set.
1342 class C : public B, public virtual A {};
1344 B is a baseclass of C; A is a virtual baseclass for C.
1345 This is a C++ 2.0 language feature. */
1347 B_TYPE
*virtual_field_bits
;
1349 /* * For classes with private fields, the number of fields is
1350 given by nfields and private_field_bits is a bit vector
1351 containing one bit per field.
1353 If the field is private, the corresponding bit will be set. */
1355 B_TYPE
*private_field_bits
;
1357 /* * For classes with protected fields, the number of fields is
1358 given by nfields and protected_field_bits is a bit vector
1359 containing one bit per field.
1361 If the field is private, the corresponding bit will be set. */
1363 B_TYPE
*protected_field_bits
;
1365 /* * For classes with fields to be ignored, either this is
1366 optimized out or this field has length 0. */
1368 B_TYPE
*ignore_field_bits
;
1370 /* * For classes, structures, and unions, a description of each
1371 field, which consists of an overloaded name, followed by the
1372 types of arguments that the method expects, and then the name
1373 after it has been renamed to make it distinct.
1375 fn_fieldlists points to an array of nfn_fields of these. */
1377 struct fn_fieldlist
*fn_fieldlists
;
1379 /* * typedefs defined inside this class. typedef_field points to
1380 an array of typedef_field_count elements. */
1382 struct decl_field
*typedef_field
;
1384 unsigned typedef_field_count
;
1386 /* * The nested types defined by this type. nested_types points to
1387 an array of nested_types_count elements. */
1389 struct decl_field
*nested_types
;
1391 unsigned nested_types_count
;
1393 /* * The template arguments. This is an array with
1394 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1397 struct symbol
**template_arguments
;
1400 /* * Struct used to store conversion rankings. */
1406 /* * When two conversions are of the same type and therefore have
1407 the same rank, subrank is used to differentiate the two.
1409 Eg: Two derived-class-pointer to base-class-pointer conversions
1410 would both have base pointer conversion rank, but the
1411 conversion with the shorter distance to the ancestor is
1412 preferable. 'subrank' would be used to reflect that. */
1417 /* * Used for ranking a function for overload resolution. */
1419 typedef std::vector
<rank
> badness_vector
;
1421 /* * GNAT Ada-specific information for various Ada types. */
1423 struct gnat_aux_type
1425 /* * Parallel type used to encode information about dynamic types
1426 used in Ada (such as variant records, variable-size array,
1428 struct type
* descriptive_type
;
1431 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1435 /* * The calling convention for targets supporting multiple ABIs.
1436 Right now this is only fetched from the Dwarf-2
1437 DW_AT_calling_convention attribute. The value is one of the
1440 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1442 /* * Whether this function normally returns to its caller. It is
1443 set from the DW_AT_noreturn attribute if set on the
1444 DW_TAG_subprogram. */
1446 unsigned int is_noreturn
: 1;
1448 /* * Only those DW_TAG_call_site's in this function that have
1449 DW_AT_call_tail_call set are linked in this list. Function
1450 without its tail call list complete
1451 (DW_AT_call_all_tail_calls or its superset
1452 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1453 DW_TAG_call_site's exist in such function. */
1455 struct call_site
*tail_call_list
;
1457 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1458 contains the method. */
1460 struct type
*self_type
;
1463 /* struct call_site_parameter can be referenced in callees by several ways. */
1465 enum call_site_parameter_kind
1467 /* * Use field call_site_parameter.u.dwarf_reg. */
1468 CALL_SITE_PARAMETER_DWARF_REG
,
1470 /* * Use field call_site_parameter.u.fb_offset. */
1471 CALL_SITE_PARAMETER_FB_OFFSET
,
1473 /* * Use field call_site_parameter.u.param_offset. */
1474 CALL_SITE_PARAMETER_PARAM_OFFSET
1477 struct call_site_target
1479 union field_location loc
;
1481 /* * Discriminant for union field_location. */
1483 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1486 union call_site_parameter_u
1488 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1489 as DWARF register number, for register passed
1494 /* * Offset from the callee's frame base, for stack passed
1495 parameters. This equals offset from the caller's stack
1498 CORE_ADDR fb_offset
;
1500 /* * Offset relative to the start of this PER_CU to
1501 DW_TAG_formal_parameter which is referenced by both
1502 caller and the callee. */
1504 cu_offset param_cu_off
;
1507 struct call_site_parameter
1509 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1511 union call_site_parameter_u u
;
1513 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1515 const gdb_byte
*value
;
1518 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1519 It may be NULL if not provided by DWARF. */
1521 const gdb_byte
*data_value
;
1522 size_t data_value_size
;
1525 /* * A place where a function gets called from, represented by
1526 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1530 /* * Address of the first instruction after this call. It must be
1531 the first field as we overload core_addr_hash and core_addr_eq
1536 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1538 struct call_site
*tail_call_next
;
1540 /* * Describe DW_AT_call_target. Missing attribute uses
1541 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1543 struct call_site_target target
;
1545 /* * Size of the PARAMETER array. */
1547 unsigned parameter_count
;
1549 /* * CU of the function where the call is located. It gets used
1550 for DWARF blocks execution in the parameter array below. */
1552 dwarf2_per_cu_data
*per_cu
;
1554 /* objfile of the function where the call is located. */
1556 dwarf2_per_objfile
*per_objfile
;
1558 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1560 struct call_site_parameter parameter
[1];
1563 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1564 static structure. */
1566 extern const struct cplus_struct_type cplus_struct_default
;
1568 extern void allocate_cplus_struct_type (struct type
*);
1570 #define INIT_CPLUS_SPECIFIC(type) \
1571 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1572 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1573 &cplus_struct_default)
1575 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1577 #define HAVE_CPLUS_STRUCT(type) \
1578 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1579 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1581 #define INIT_NONE_SPECIFIC(type) \
1582 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1583 TYPE_MAIN_TYPE (type)->type_specific = {})
1585 extern const struct gnat_aux_type gnat_aux_default
;
1587 extern void allocate_gnat_aux_type (struct type
*);
1589 #define INIT_GNAT_SPECIFIC(type) \
1590 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1591 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1592 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1593 /* * A macro that returns non-zero if the type-specific data should be
1594 read as "gnat-stuff". */
1595 #define HAVE_GNAT_AUX_INFO(type) \
1596 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1598 /* * True if TYPE is known to be an Ada type of some kind. */
1599 #define ADA_TYPE_P(type) \
1600 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1601 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1602 && TYPE_FIXED_INSTANCE (type)))
1604 #define INIT_FUNC_SPECIFIC(type) \
1605 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1606 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1607 TYPE_ZALLOC (type, \
1608 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1610 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1611 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1612 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1613 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1614 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1615 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1616 #define TYPE_CHAIN(thistype) (thistype)->chain
1617 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1618 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1619 so you only have to call check_typedef once. Since allocate_value
1620 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1621 #define TYPE_LENGTH(thistype) (thistype)->length
1623 /* * Return the alignment of the type in target addressable memory
1624 units, or 0 if no alignment was specified. */
1625 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1627 /* * Return the alignment of the type in target addressable memory
1628 units, or 0 if no alignment was specified. */
1629 extern unsigned type_raw_align (struct type
*);
1631 /* * Return the alignment of the type in target addressable memory
1632 units. Return 0 if the alignment cannot be determined; but note
1633 that this makes an effort to compute the alignment even it it was
1634 not specified in the debug info. */
1635 extern unsigned type_align (struct type
*);
1637 /* * Set the alignment of the type. The alignment must be a power of
1638 2. Returns false if the given value does not fit in the available
1639 space in struct type. */
1640 extern bool set_type_align (struct type
*, ULONGEST
);
1642 /* Property accessors for the type data location. */
1643 #define TYPE_DATA_LOCATION(thistype) \
1644 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1645 #define TYPE_DATA_LOCATION_BATON(thistype) \
1646 TYPE_DATA_LOCATION (thistype)->data.baton
1647 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1648 (TYPE_DATA_LOCATION (thistype)->const_val ())
1649 #define TYPE_DATA_LOCATION_KIND(thistype) \
1650 (TYPE_DATA_LOCATION (thistype)->kind ())
1651 #define TYPE_DYNAMIC_LENGTH(thistype) \
1652 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1654 /* Property accessors for the type allocated/associated. */
1655 #define TYPE_ALLOCATED_PROP(thistype) \
1656 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1657 #define TYPE_ASSOCIATED_PROP(thistype) \
1658 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1662 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1663 /* Do not call this, use TYPE_SELF_TYPE. */
1664 extern struct type
*internal_type_self_type (struct type
*);
1665 extern void set_type_self_type (struct type
*, struct type
*);
1667 extern int internal_type_vptr_fieldno (struct type
*);
1668 extern void set_type_vptr_fieldno (struct type
*, int);
1669 extern struct type
*internal_type_vptr_basetype (struct type
*);
1670 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1671 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1672 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1674 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1675 #define TYPE_SPECIFIC_FIELD(thistype) \
1676 TYPE_MAIN_TYPE(thistype)->type_specific_field
1677 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1678 where we're trying to print an Ada array using the C language.
1679 In that case, there is no "cplus_stuff", but the C language assumes
1680 that there is. What we do, in that case, is pretend that there is
1681 an implicit one which is the default cplus stuff. */
1682 #define TYPE_CPLUS_SPECIFIC(thistype) \
1683 (!HAVE_CPLUS_STRUCT(thistype) \
1684 ? (struct cplus_struct_type*)&cplus_struct_default \
1685 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1686 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1687 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1688 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1689 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1690 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1691 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1692 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1693 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1694 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1695 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1696 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1697 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1698 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1699 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1700 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1701 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1703 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1704 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1705 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1707 #define FIELD_NAME(thisfld) ((thisfld).name)
1708 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1709 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1710 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1711 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1712 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1713 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1714 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1715 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1716 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1717 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1718 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1719 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1720 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1721 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1722 #define SET_FIELD_PHYSNAME(thisfld, name) \
1723 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1724 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1725 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1726 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1727 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1728 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1729 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1730 FIELD_DWARF_BLOCK (thisfld) = (addr))
1731 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1732 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1734 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1735 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1736 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1737 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1738 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1739 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1740 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1741 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1742 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1743 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1745 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1746 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1747 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1748 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1749 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1750 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1751 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1752 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1753 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1754 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1755 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1756 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1757 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1758 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1759 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1760 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1761 #define TYPE_FIELD_PRIVATE(thistype, n) \
1762 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1763 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1764 #define TYPE_FIELD_PROTECTED(thistype, n) \
1765 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1766 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1767 #define TYPE_FIELD_IGNORE(thistype, n) \
1768 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1769 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1770 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1771 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1772 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1774 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1775 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1776 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1777 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1778 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1780 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1781 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1782 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1783 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1784 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1785 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1787 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1788 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1789 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1790 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1791 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1792 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1793 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1794 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1795 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1796 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1797 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1798 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1799 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1800 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1801 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1802 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1803 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1805 /* Accessors for typedefs defined by a class. */
1806 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1807 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1808 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1809 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1810 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1811 TYPE_TYPEDEF_FIELD (thistype, n).name
1812 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1813 TYPE_TYPEDEF_FIELD (thistype, n).type
1814 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1815 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1816 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1817 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1818 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1819 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1821 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1822 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1823 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1824 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1825 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1826 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1827 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1828 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1829 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1830 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1831 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1832 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1833 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1834 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1836 #define TYPE_IS_OPAQUE(thistype) \
1837 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1838 || ((thistype)->code () == TYPE_CODE_UNION)) \
1839 && ((thistype)->num_fields () == 0) \
1840 && (!HAVE_CPLUS_STRUCT (thistype) \
1841 || TYPE_NFN_FIELDS (thistype) == 0) \
1842 && ((thistype)->is_stub () || !TYPE_STUB_SUPPORTED (thistype)))
1844 /* * A helper macro that returns the name of a type or "unnamed type"
1845 if the type has no name. */
1847 #define TYPE_SAFE_NAME(type) \
1848 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1850 /* * A helper macro that returns the name of an error type. If the
1851 type has a name, it is used; otherwise, a default is used. */
1853 #define TYPE_ERROR_NAME(type) \
1854 (type->name () ? type->name () : _("<error type>"))
1856 /* Given TYPE, return its floatformat. */
1857 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1861 /* Integral types. */
1863 /* Implicit size/sign (based on the architecture's ABI). */
1864 struct type
*builtin_void
;
1865 struct type
*builtin_char
;
1866 struct type
*builtin_short
;
1867 struct type
*builtin_int
;
1868 struct type
*builtin_long
;
1869 struct type
*builtin_signed_char
;
1870 struct type
*builtin_unsigned_char
;
1871 struct type
*builtin_unsigned_short
;
1872 struct type
*builtin_unsigned_int
;
1873 struct type
*builtin_unsigned_long
;
1874 struct type
*builtin_bfloat16
;
1875 struct type
*builtin_half
;
1876 struct type
*builtin_float
;
1877 struct type
*builtin_double
;
1878 struct type
*builtin_long_double
;
1879 struct type
*builtin_complex
;
1880 struct type
*builtin_double_complex
;
1881 struct type
*builtin_string
;
1882 struct type
*builtin_bool
;
1883 struct type
*builtin_long_long
;
1884 struct type
*builtin_unsigned_long_long
;
1885 struct type
*builtin_decfloat
;
1886 struct type
*builtin_decdouble
;
1887 struct type
*builtin_declong
;
1889 /* "True" character types.
1890 We use these for the '/c' print format, because c_char is just a
1891 one-byte integral type, which languages less laid back than C
1892 will print as ... well, a one-byte integral type. */
1893 struct type
*builtin_true_char
;
1894 struct type
*builtin_true_unsigned_char
;
1896 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1897 is for when an architecture needs to describe a register that has
1899 struct type
*builtin_int0
;
1900 struct type
*builtin_int8
;
1901 struct type
*builtin_uint8
;
1902 struct type
*builtin_int16
;
1903 struct type
*builtin_uint16
;
1904 struct type
*builtin_int24
;
1905 struct type
*builtin_uint24
;
1906 struct type
*builtin_int32
;
1907 struct type
*builtin_uint32
;
1908 struct type
*builtin_int64
;
1909 struct type
*builtin_uint64
;
1910 struct type
*builtin_int128
;
1911 struct type
*builtin_uint128
;
1913 /* Wide character types. */
1914 struct type
*builtin_char16
;
1915 struct type
*builtin_char32
;
1916 struct type
*builtin_wchar
;
1918 /* Pointer types. */
1920 /* * `pointer to data' type. Some target platforms use an implicitly
1921 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1922 struct type
*builtin_data_ptr
;
1924 /* * `pointer to function (returning void)' type. Harvard
1925 architectures mean that ABI function and code pointers are not
1926 interconvertible. Similarly, since ANSI, C standards have
1927 explicitly said that pointers to functions and pointers to data
1928 are not interconvertible --- that is, you can't cast a function
1929 pointer to void * and back, and expect to get the same value.
1930 However, all function pointer types are interconvertible, so void
1931 (*) () can server as a generic function pointer. */
1933 struct type
*builtin_func_ptr
;
1935 /* * `function returning pointer to function (returning void)' type.
1936 The final void return type is not significant for it. */
1938 struct type
*builtin_func_func
;
1940 /* Special-purpose types. */
1942 /* * This type is used to represent a GDB internal function. */
1944 struct type
*internal_fn
;
1946 /* * This type is used to represent an xmethod. */
1947 struct type
*xmethod
;
1950 /* * Return the type table for the specified architecture. */
1952 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1954 /* * Per-objfile types used by symbol readers. */
1958 /* Basic types based on the objfile architecture. */
1959 struct type
*builtin_void
;
1960 struct type
*builtin_char
;
1961 struct type
*builtin_short
;
1962 struct type
*builtin_int
;
1963 struct type
*builtin_long
;
1964 struct type
*builtin_long_long
;
1965 struct type
*builtin_signed_char
;
1966 struct type
*builtin_unsigned_char
;
1967 struct type
*builtin_unsigned_short
;
1968 struct type
*builtin_unsigned_int
;
1969 struct type
*builtin_unsigned_long
;
1970 struct type
*builtin_unsigned_long_long
;
1971 struct type
*builtin_half
;
1972 struct type
*builtin_float
;
1973 struct type
*builtin_double
;
1974 struct type
*builtin_long_double
;
1976 /* * This type is used to represent symbol addresses. */
1977 struct type
*builtin_core_addr
;
1979 /* * This type represents a type that was unrecognized in symbol
1981 struct type
*builtin_error
;
1983 /* * Types used for symbols with no debug information. */
1984 struct type
*nodebug_text_symbol
;
1985 struct type
*nodebug_text_gnu_ifunc_symbol
;
1986 struct type
*nodebug_got_plt_symbol
;
1987 struct type
*nodebug_data_symbol
;
1988 struct type
*nodebug_unknown_symbol
;
1989 struct type
*nodebug_tls_symbol
;
1992 /* * Return the type table for the specified objfile. */
1994 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1996 /* Explicit floating-point formats. See "floatformat.h". */
1997 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1998 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1999 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2000 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2001 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2002 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2003 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2004 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2005 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2006 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2007 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2008 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2009 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2011 /* Allocate space for storing data associated with a particular
2012 type. We ensure that the space is allocated using the same
2013 mechanism that was used to allocate the space for the type
2014 structure itself. I.e. if the type is on an objfile's
2015 objfile_obstack, then the space for data associated with that type
2016 will also be allocated on the objfile_obstack. If the type is
2017 associated with a gdbarch, then the space for data associated with that
2018 type will also be allocated on the gdbarch_obstack.
2020 If a type is not associated with neither an objfile or a gdbarch then
2021 you should not use this macro to allocate space for data, instead you
2022 should call xmalloc directly, and ensure the memory is correctly freed
2023 when it is no longer needed. */
2025 #define TYPE_ALLOC(t,size) \
2026 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2027 ? &TYPE_OBJFILE (t)->objfile_obstack \
2028 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2032 /* See comment on TYPE_ALLOC. */
2034 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2036 /* Use alloc_type to allocate a type owned by an objfile. Use
2037 alloc_type_arch to allocate a type owned by an architecture. Use
2038 alloc_type_copy to allocate a type with the same owner as a
2039 pre-existing template type, no matter whether objfile or
2041 extern struct type
*alloc_type (struct objfile
*);
2042 extern struct type
*alloc_type_arch (struct gdbarch
*);
2043 extern struct type
*alloc_type_copy (const struct type
*);
2045 /* * Return the type's architecture. For types owned by an
2046 architecture, that architecture is returned. For types owned by an
2047 objfile, that objfile's architecture is returned. */
2049 extern struct gdbarch
*get_type_arch (const struct type
*);
2051 /* * This returns the target type (or NULL) of TYPE, also skipping
2054 extern struct type
*get_target_type (struct type
*type
);
2056 /* Return the equivalent of TYPE_LENGTH, but in number of target
2057 addressable memory units of the associated gdbarch instead of bytes. */
2059 extern unsigned int type_length_units (struct type
*type
);
2061 /* * Helper function to construct objfile-owned types. */
2063 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2065 extern struct type
*init_integer_type (struct objfile
*, int, int,
2067 extern struct type
*init_character_type (struct objfile
*, int, int,
2069 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2071 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2072 const struct floatformat
**,
2073 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2074 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2075 extern struct type
*init_complex_type (const char *, struct type
*);
2076 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2079 /* Helper functions to construct architecture-owned types. */
2080 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2082 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2084 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2086 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2088 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2089 const struct floatformat
**);
2090 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2091 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2094 /* Helper functions to construct a struct or record type. An
2095 initially empty type is created using arch_composite_type().
2096 Fields are then added using append_composite_type_field*(). A union
2097 type has its size set to the largest field. A struct type has each
2098 field packed against the previous. */
2100 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2101 const char *name
, enum type_code code
);
2102 extern void append_composite_type_field (struct type
*t
, const char *name
,
2103 struct type
*field
);
2104 extern void append_composite_type_field_aligned (struct type
*t
,
2108 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2109 struct type
*field
);
2111 /* Helper functions to construct a bit flags type. An initially empty
2112 type is created using arch_flag_type(). Flags are then added using
2113 append_flag_type_field() and append_flag_type_flag(). */
2114 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2115 const char *name
, int bit
);
2116 extern void append_flags_type_field (struct type
*type
,
2117 int start_bitpos
, int nr_bits
,
2118 struct type
*field_type
, const char *name
);
2119 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2122 extern void make_vector_type (struct type
*array_type
);
2123 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2125 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2126 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2127 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2130 extern struct type
*make_reference_type (struct type
*, struct type
**,
2133 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2135 extern struct type
*make_restrict_type (struct type
*);
2137 extern struct type
*make_unqualified_type (struct type
*);
2139 extern struct type
*make_atomic_type (struct type
*);
2141 extern void replace_type (struct type
*, struct type
*);
2143 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2145 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2147 extern struct type
*make_type_with_address_space (struct type
*type
,
2148 int space_identifier
);
2150 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2152 extern struct type
*lookup_methodptr_type (struct type
*);
2154 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2155 struct type
*to_type
, struct field
*args
,
2156 int nargs
, int varargs
);
2158 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2161 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2163 extern struct type
*allocate_stub_method (struct type
*);
2165 extern const char *type_name_or_error (struct type
*type
);
2169 /* The field of the element, or NULL if no element was found. */
2170 struct field
*field
;
2172 /* The bit offset of the element in the parent structure. */
2176 /* Given a type TYPE, lookup the field and offset of the component named
2179 TYPE can be either a struct or union, or a pointer or reference to
2180 a struct or union. If it is a pointer or reference, its target
2181 type is automatically used. Thus '.' and '->' are interchangable,
2182 as specified for the definitions of the expression element types
2183 STRUCTOP_STRUCT and STRUCTOP_PTR.
2185 If NOERR is nonzero, the returned structure will have field set to
2186 NULL if there is no component named NAME.
2188 If the component NAME is a field in an anonymous substructure of
2189 TYPE, the returned offset is a "global" offset relative to TYPE
2190 rather than an offset within the substructure. */
2192 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2194 /* Given a type TYPE, lookup the type of the component named NAME.
2196 TYPE can be either a struct or union, or a pointer or reference to
2197 a struct or union. If it is a pointer or reference, its target
2198 type is automatically used. Thus '.' and '->' are interchangable,
2199 as specified for the definitions of the expression element types
2200 STRUCTOP_STRUCT and STRUCTOP_PTR.
2202 If NOERR is nonzero, return NULL if there is no component named
2205 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2207 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2209 extern struct type
*lookup_pointer_type (struct type
*);
2211 extern struct type
*make_function_type (struct type
*, struct type
**);
2213 extern struct type
*lookup_function_type (struct type
*);
2215 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2219 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2223 extern struct type
*create_array_type_with_stride
2224 (struct type
*, struct type
*, struct type
*,
2225 struct dynamic_prop
*, unsigned int);
2227 extern struct type
*create_range_type (struct type
*, struct type
*,
2228 const struct dynamic_prop
*,
2229 const struct dynamic_prop
*,
2232 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2233 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2236 extern struct type
* create_range_type_with_stride
2237 (struct type
*result_type
, struct type
*index_type
,
2238 const struct dynamic_prop
*low_bound
,
2239 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2240 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2242 extern struct type
*create_array_type (struct type
*, struct type
*,
2245 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2247 extern struct type
*create_string_type (struct type
*, struct type
*,
2249 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2251 extern struct type
*create_set_type (struct type
*, struct type
*);
2253 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2256 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2259 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2261 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2263 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2264 ADDR specifies the location of the variable the type is bound to.
2265 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2266 static properties is returned. */
2267 extern struct type
*resolve_dynamic_type
2268 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2271 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2272 extern int is_dynamic_type (struct type
*type
);
2274 extern struct type
*check_typedef (struct type
*);
2276 extern void check_stub_method_group (struct type
*, int);
2278 extern char *gdb_mangle_name (struct type
*, int, int);
2280 extern struct type
*lookup_typename (const struct language_defn
*,
2281 const char *, const struct block
*, int);
2283 extern struct type
*lookup_template_type (const char *, struct type
*,
2284 const struct block
*);
2286 extern int get_vptr_fieldno (struct type
*, struct type
**);
2288 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2290 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2291 LONGEST
*high_bound
);
2293 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2295 extern int class_types_same_p (const struct type
*, const struct type
*);
2297 extern int is_ancestor (struct type
*, struct type
*);
2299 extern int is_public_ancestor (struct type
*, struct type
*);
2301 extern int is_unique_ancestor (struct type
*, struct value
*);
2303 /* Overload resolution */
2305 /* * Badness if parameter list length doesn't match arg list length. */
2306 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2308 /* * Dummy badness value for nonexistent parameter positions. */
2309 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2310 /* * Badness if no conversion among types. */
2311 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2313 /* * Badness of an exact match. */
2314 extern const struct rank EXACT_MATCH_BADNESS
;
2316 /* * Badness of integral promotion. */
2317 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2318 /* * Badness of floating promotion. */
2319 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2320 /* * Badness of converting a derived class pointer
2321 to a base class pointer. */
2322 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2323 /* * Badness of integral conversion. */
2324 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2325 /* * Badness of floating conversion. */
2326 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2327 /* * Badness of integer<->floating conversions. */
2328 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2329 /* * Badness of conversion of pointer to void pointer. */
2330 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2331 /* * Badness of conversion to boolean. */
2332 extern const struct rank BOOL_CONVERSION_BADNESS
;
2333 /* * Badness of converting derived to base class. */
2334 extern const struct rank BASE_CONVERSION_BADNESS
;
2335 /* * Badness of converting from non-reference to reference. Subrank
2336 is the type of reference conversion being done. */
2337 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2338 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2339 /* * Conversion to rvalue reference. */
2340 #define REFERENCE_CONVERSION_RVALUE 1
2341 /* * Conversion to const lvalue reference. */
2342 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2344 /* * Badness of converting integer 0 to NULL pointer. */
2345 extern const struct rank NULL_POINTER_CONVERSION
;
2346 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2348 extern const struct rank CV_CONVERSION_BADNESS
;
2349 #define CV_CONVERSION_CONST 1
2350 #define CV_CONVERSION_VOLATILE 2
2352 /* Non-standard conversions allowed by the debugger */
2354 /* * Converting a pointer to an int is usually OK. */
2355 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2357 /* * Badness of converting a (non-zero) integer constant
2359 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2361 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2362 extern int compare_ranks (struct rank a
, struct rank b
);
2364 extern int compare_badness (const badness_vector
&,
2365 const badness_vector
&);
2367 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2368 gdb::array_view
<value
*> args
);
2370 extern struct rank
rank_one_type (struct type
*, struct type
*,
2373 extern void recursive_dump_type (struct type
*, int);
2375 extern int field_is_static (struct field
*);
2379 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2380 const struct value_print_options
*,
2381 int, struct ui_file
*);
2383 extern int can_dereference (struct type
*);
2385 extern int is_integral_type (struct type
*);
2387 extern int is_floating_type (struct type
*);
2389 extern int is_scalar_type (struct type
*type
);
2391 extern int is_scalar_type_recursive (struct type
*);
2393 extern int class_or_union_p (const struct type
*);
2395 extern void maintenance_print_type (const char *, int);
2397 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2399 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2401 htab_t copied_types
);
2403 extern struct type
*copy_type (const struct type
*type
);
2405 extern bool types_equal (struct type
*, struct type
*);
2407 extern bool types_deeply_equal (struct type
*, struct type
*);
2409 extern int type_not_allocated (const struct type
*type
);
2411 extern int type_not_associated (const struct type
*type
);
2413 /* * When the type includes explicit byte ordering, return that.
2414 Otherwise, the byte ordering from gdbarch_byte_order for
2415 get_type_arch is returned. */
2417 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2419 /* A flag to enable printing of debugging information of C++
2422 extern unsigned int overload_debug
;
2424 #endif /* GDBTYPES_H */