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 /* * No sign for this type. In C++, "char", "signed char", and
214 "unsigned char" are distinct types; so we need an extra flag to
215 indicate the absence of a sign! */
217 #define TYPE_NOSIGN(t) ((t)->has_no_signedness ())
219 /* * A compiler may supply dwarf instrumentation
220 that indicates the desired endian interpretation of the variable
221 differs from the native endian representation. */
223 #define TYPE_ENDIANITY_NOT_DEFAULT(t) (TYPE_MAIN_TYPE (t)->flag_endianity_not_default)
225 /* * This appears in a type's flags word if it is a stub type (e.g.,
226 if someone referenced a type that wasn't defined in a source file
227 via (struct sir_not_appearing_in_this_film *)). */
229 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
231 /* * The target type of this type is a stub type, and this type needs
232 to be updated if it gets un-stubbed in check_typedef. Used for
233 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
234 based on the TYPE_LENGTH of the target type. Also, set for
235 TYPE_CODE_TYPEDEF. */
237 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
239 /* * This is a function type which appears to have a prototype. We
240 need this for function calls in order to tell us if it's necessary
241 to coerce the args, or to just do the standard conversions. This
242 is used with a short field. */
244 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
246 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
249 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
251 /* * Identify a vector type. Gcc is handling this by adding an extra
252 attribute to the array type. We slurp that in as a new flag of a
253 type. This is used only in dwarf2read.c. */
254 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
256 /* * The debugging formats (especially STABS) do not contain enough
257 information to represent all Ada types---especially those whose
258 size depends on dynamic quantities. Therefore, the GNAT Ada
259 compiler includes extra information in the form of additional type
260 definitions connected by naming conventions. This flag indicates
261 that the type is an ordinary (unencoded) GDB type that has been
262 created from the necessary run-time information, and does not need
263 further interpretation. Optionally marks ordinary, fixed-size GDB
266 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
268 /* * This debug target supports TYPE_STUB(t). In the unsupported case
269 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
270 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
271 guessed the TYPE_STUB(t) value (see dwarfread.c). */
273 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
275 /* * Not textual. By default, GDB treats all single byte integers as
276 characters (or elements of strings) unless this flag is set. */
278 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
280 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
281 address is returned by this function call. TYPE_TARGET_TYPE
282 determines the final returned function type to be presented to
285 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
287 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
288 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
289 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
291 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
292 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
293 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
295 /* * True if this type was declared using the "class" keyword. This is
296 only valid for C++ structure and enum types. If false, a structure
297 was declared as a "struct"; if true it was declared "class". For
298 enum types, this is true when "enum class" or "enum struct" was
299 used to declare the type.. */
301 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
303 /* * True if this type is a "flag" enum. A flag enum is one where all
304 the values are pairwise disjoint when "and"ed together. This
305 affects how enum values are printed. */
307 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
309 /* * Constant type. If this is set, the corresponding type has a
312 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
314 /* * Volatile type. If this is set, the corresponding type has a
315 volatile modifier. */
317 #define TYPE_VOLATILE(t) \
318 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
320 /* * Restrict type. If this is set, the corresponding type has a
321 restrict modifier. */
323 #define TYPE_RESTRICT(t) \
324 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
326 /* * Atomic type. If this is set, the corresponding type has an
329 #define TYPE_ATOMIC(t) \
330 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
332 /* * True if this type represents either an lvalue or lvalue reference type. */
334 #define TYPE_IS_REFERENCE(t) \
335 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
337 /* * True if this type is allocatable. */
338 #define TYPE_IS_ALLOCATABLE(t) \
339 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
341 /* * True if this type has variant parts. */
342 #define TYPE_HAS_VARIANT_PARTS(t) \
343 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
345 /* * True if this type has a dynamic length. */
346 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
347 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
349 /* * Instruction-space delimited type. This is for Harvard architectures
350 which have separate instruction and data address spaces (and perhaps
353 GDB usually defines a flat address space that is a superset of the
354 architecture's two (or more) address spaces, but this is an extension
355 of the architecture's model.
357 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
358 resides in instruction memory, even if its address (in the extended
359 flat address space) does not reflect this.
361 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
362 corresponding type resides in the data memory space, even if
363 this is not indicated by its (flat address space) address.
365 If neither flag is set, the default space for functions / methods
366 is instruction space, and for data objects is data memory. */
368 #define TYPE_CODE_SPACE(t) \
369 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
371 #define TYPE_DATA_SPACE(t) \
372 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
374 /* * Address class flags. Some environments provide for pointers
375 whose size is different from that of a normal pointer or address
376 types where the bits are interpreted differently than normal
377 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
378 target specific ways to represent these different types of address
381 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
382 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
383 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
384 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
385 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
386 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
387 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
388 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
390 /* * Information about a single discriminant. */
392 struct discriminant_range
394 /* * The range of values for the variant. This is an inclusive
398 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
399 is true if this should be an unsigned comparison; false for
401 bool contains (ULONGEST value
, bool is_unsigned
) const
404 return value
>= low
&& value
<= high
;
405 LONGEST valuel
= (LONGEST
) value
;
406 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
412 /* * A single variant. A variant has a list of discriminant values.
413 When the discriminator matches one of these, the variant is
414 enabled. Each variant controls zero or more fields; and may also
415 control other variant parts as well. This struct corresponds to
416 DW_TAG_variant in DWARF. */
418 struct variant
: allocate_on_obstack
420 /* * The discriminant ranges for this variant. */
421 gdb::array_view
<discriminant_range
> discriminants
;
423 /* * The fields controlled by this variant. This is inclusive on
424 the low end and exclusive on the high end. A variant may not
425 control any fields, in which case the two values will be equal.
426 These are indexes into the type's array of fields. */
430 /* * Variant parts controlled by this variant. */
431 gdb::array_view
<variant_part
> parts
;
433 /* * Return true if this is the default variant. The default
434 variant can be recognized because it has no associated
436 bool is_default () const
438 return discriminants
.empty ();
441 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
442 if this should be an unsigned comparison; false for signed. */
443 bool matches (ULONGEST value
, bool is_unsigned
) const;
446 /* * A variant part. Each variant part has an optional discriminant
447 and holds an array of variants. This struct corresponds to
448 DW_TAG_variant_part in DWARF. */
450 struct variant_part
: allocate_on_obstack
452 /* * The index of the discriminant field in the outer type. This is
453 an index into the type's array of fields. If this is -1, there
454 is no discriminant, and only the default variant can be
455 considered to be selected. */
456 int discriminant_index
;
458 /* * True if this discriminant is unsigned; false if signed. This
459 comes from the type of the discriminant. */
462 /* * The variants that are controlled by this variant part. Note
463 that these will always be sorted by field number. */
464 gdb::array_view
<variant
> variants
;
468 enum dynamic_prop_kind
470 PROP_UNDEFINED
, /* Not defined. */
471 PROP_CONST
, /* Constant. */
472 PROP_ADDR_OFFSET
, /* Address offset. */
473 PROP_LOCEXPR
, /* Location expression. */
474 PROP_LOCLIST
, /* Location list. */
475 PROP_VARIANT_PARTS
, /* Variant parts. */
476 PROP_TYPE
, /* Type. */
479 union dynamic_prop_data
481 /* Storage for constant property. */
485 /* Storage for dynamic property. */
489 /* Storage of variant parts for a type. A type with variant parts
490 has all its fields "linearized" -- stored in a single field
491 array, just as if they had all been declared that way. The
492 variant parts are attached via a dynamic property, and then are
493 used to control which fields end up in the final type during
494 dynamic type resolution. */
496 const gdb::array_view
<variant_part
> *variant_parts
;
498 /* Once a variant type is resolved, we may want to be able to go
499 from the resolved type to the original type. In this case we
500 rewrite the property's kind and set this field. */
502 struct type
*original_type
;
505 /* * Used to store a dynamic property. */
509 dynamic_prop_kind
kind () const
514 void set_undefined ()
516 m_kind
= PROP_UNDEFINED
;
519 LONGEST
const_val () const
521 gdb_assert (m_kind
== PROP_CONST
);
523 return m_data
.const_val
;
526 void set_const_val (LONGEST const_val
)
529 m_data
.const_val
= const_val
;
534 gdb_assert (m_kind
== PROP_LOCEXPR
535 || m_kind
== PROP_LOCLIST
536 || m_kind
== PROP_ADDR_OFFSET
);
541 void set_locexpr (void *baton
)
543 m_kind
= PROP_LOCEXPR
;
544 m_data
.baton
= baton
;
547 void set_loclist (void *baton
)
549 m_kind
= PROP_LOCLIST
;
550 m_data
.baton
= baton
;
553 void set_addr_offset (void *baton
)
555 m_kind
= PROP_ADDR_OFFSET
;
556 m_data
.baton
= baton
;
559 const gdb::array_view
<variant_part
> *variant_parts () const
561 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
563 return m_data
.variant_parts
;
566 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
568 m_kind
= PROP_VARIANT_PARTS
;
569 m_data
.variant_parts
= variant_parts
;
572 struct type
*original_type () const
574 gdb_assert (m_kind
== PROP_TYPE
);
576 return m_data
.original_type
;
579 void set_original_type (struct type
*original_type
)
582 m_data
.original_type
= original_type
;
585 /* Determine which field of the union dynamic_prop.data is used. */
586 enum dynamic_prop_kind m_kind
;
588 /* Storage for dynamic or static value. */
589 union dynamic_prop_data m_data
;
592 /* Compare two dynamic_prop objects for equality. dynamic_prop
593 instances are equal iff they have the same type and storage. */
594 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
596 /* Compare two dynamic_prop objects for inequality. */
597 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
602 /* * Define a type's dynamic property node kind. */
603 enum dynamic_prop_node_kind
605 /* A property providing a type's data location.
606 Evaluating this field yields to the location of an object's data. */
607 DYN_PROP_DATA_LOCATION
,
609 /* A property representing DW_AT_allocated. The presence of this attribute
610 indicates that the object of the type can be allocated/deallocated. */
613 /* A property representing DW_AT_associated. The presence of this attribute
614 indicated that the object of the type can be associated. */
617 /* A property providing an array's byte stride. */
618 DYN_PROP_BYTE_STRIDE
,
620 /* A property holding variant parts. */
621 DYN_PROP_VARIANT_PARTS
,
623 /* A property holding the size of the type. */
627 /* * List for dynamic type attributes. */
628 struct dynamic_prop_list
630 /* The kind of dynamic prop in this node. */
631 enum dynamic_prop_node_kind prop_kind
;
633 /* The dynamic property itself. */
634 struct dynamic_prop prop
;
636 /* A pointer to the next dynamic property. */
637 struct dynamic_prop_list
*next
;
640 /* * Determine which field of the union main_type.fields[x].loc is
645 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
646 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
647 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
648 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
649 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
652 /* * A discriminant to determine which field in the
653 main_type.type_specific union is being used, if any.
655 For types such as TYPE_CODE_FLT, the use of this
656 discriminant is really redundant, as we know from the type code
657 which field is going to be used. As such, it would be possible to
658 reduce the size of this enum in order to save a bit or two for
659 other fields of struct main_type. But, since we still have extra
660 room , and for the sake of clarity and consistency, we treat all fields
661 of the union the same way. */
663 enum type_specific_kind
666 TYPE_SPECIFIC_CPLUS_STUFF
,
667 TYPE_SPECIFIC_GNAT_STUFF
,
668 TYPE_SPECIFIC_FLOATFORMAT
,
669 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
671 TYPE_SPECIFIC_SELF_TYPE
676 struct objfile
*objfile
;
677 struct gdbarch
*gdbarch
;
682 /* * Position of this field, counting in bits from start of
683 containing structure. For big-endian targets, it is the bit
684 offset to the MSB. For little-endian targets, it is the bit
685 offset to the LSB. */
692 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
693 physaddr is the location (in the target) of the static
694 field. Otherwise, physname is the mangled label of the
698 const char *physname
;
700 /* * The field location can be computed by evaluating the
701 following DWARF block. Its DATA is allocated on
702 objfile_obstack - no CU load is needed to access it. */
704 struct dwarf2_locexpr_baton
*dwarf_block
;
709 struct type
*type () const
714 void set_type (struct type
*type
)
719 union field_location loc
;
721 /* * For a function or member type, this is 1 if the argument is
722 marked artificial. Artificial arguments should not be shown
723 to the user. For TYPE_CODE_RANGE it is set if the specific
724 bound is not defined. */
726 unsigned int artificial
: 1;
728 /* * Discriminant for union field_location. */
730 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
732 /* * Size of this field, in bits, or zero if not packed.
733 If non-zero in an array type, indicates the element size in
734 bits (used only in Ada at the moment).
735 For an unpacked field, the field's type's length
736 says how many bytes the field occupies. */
738 unsigned int bitsize
: 28;
740 /* * In a struct or union type, type of this field.
741 - In a function or member type, type of this argument.
742 - In an array type, the domain-type of the array. */
746 /* * Name of field, value or argument.
747 NULL for range bounds, array domains, and member function
755 ULONGEST
bit_stride () const
757 if (this->flag_is_byte_stride
)
758 return this->stride
.const_val () * 8;
760 return this->stride
.const_val ();
763 /* * Low bound of range. */
765 struct dynamic_prop low
;
767 /* * High bound of range. */
769 struct dynamic_prop high
;
771 /* The stride value for this range. This can be stored in bits or bytes
772 based on the value of BYTE_STRIDE_P. It is optional to have a stride
773 value, if this range has no stride value defined then this will be set
774 to the constant zero. */
776 struct dynamic_prop stride
;
778 /* * The bias. Sometimes a range value is biased before storage.
779 The bias is added to the stored bits to form the true value. */
783 /* True if HIGH range bound contains the number of elements in the
784 subrange. This affects how the final high bound is computed. */
786 unsigned int flag_upper_bound_is_count
: 1;
788 /* True if LOW or/and HIGH are resolved into a static bound from
791 unsigned int flag_bound_evaluated
: 1;
793 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
795 unsigned int flag_is_byte_stride
: 1;
798 /* Compare two range_bounds objects for equality. Simply does
799 memberwise comparison. */
800 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
802 /* Compare two range_bounds objects for inequality. */
803 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
810 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
811 point to cplus_struct_default, a default static instance of a
812 struct cplus_struct_type. */
814 struct cplus_struct_type
*cplus_stuff
;
816 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
817 provides additional information. */
819 struct gnat_aux_type
*gnat_stuff
;
821 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
822 floatformat object that describes the floating-point value
823 that resides within the type. */
825 const struct floatformat
*floatformat
;
827 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
829 struct func_type
*func_stuff
;
831 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
832 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
835 struct type
*self_type
;
838 /* * Main structure representing a type in GDB.
840 This structure is space-critical. Its layout has been tweaked to
841 reduce the space used. */
845 /* * Code for kind of type. */
847 ENUM_BITFIELD(type_code
) code
: 8;
849 /* * Flags about this type. These fields appear at this location
850 because they packs nicely here. See the TYPE_* macros for
851 documentation about these fields. */
853 unsigned int m_flag_unsigned
: 1;
854 unsigned int m_flag_nosign
: 1;
855 unsigned int flag_stub
: 1;
856 unsigned int flag_target_stub
: 1;
857 unsigned int flag_prototyped
: 1;
858 unsigned int flag_varargs
: 1;
859 unsigned int flag_vector
: 1;
860 unsigned int flag_stub_supported
: 1;
861 unsigned int flag_gnu_ifunc
: 1;
862 unsigned int flag_fixed_instance
: 1;
863 unsigned int flag_objfile_owned
: 1;
864 unsigned int flag_endianity_not_default
: 1;
866 /* * True if this type was declared with "class" rather than
869 unsigned int flag_declared_class
: 1;
871 /* * True if this is an enum type with disjoint values. This
872 affects how the enum is printed. */
874 unsigned int flag_flag_enum
: 1;
876 /* * A discriminant telling us which field of the type_specific
877 union is being used for this type, if any. */
879 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
881 /* * Number of fields described for this type. This field appears
882 at this location because it packs nicely here. */
886 /* * Name of this type, or NULL if none.
888 This is used for printing only. For looking up a name, look for
889 a symbol in the VAR_DOMAIN. This is generally allocated in the
890 objfile's obstack. However coffread.c uses malloc. */
894 /* * Every type is now associated with a particular objfile, and the
895 type is allocated on the objfile_obstack for that objfile. One
896 problem however, is that there are times when gdb allocates new
897 types while it is not in the process of reading symbols from a
898 particular objfile. Fortunately, these happen when the type
899 being created is a derived type of an existing type, such as in
900 lookup_pointer_type(). So we can just allocate the new type
901 using the same objfile as the existing type, but to do this we
902 need a backpointer to the objfile from the existing type. Yes
903 this is somewhat ugly, but without major overhaul of the internal
904 type system, it can't be avoided for now. */
906 union type_owner owner
;
908 /* * For a pointer type, describes the type of object pointed to.
909 - For an array type, describes the type of the elements.
910 - For a function or method type, describes the type of the return value.
911 - For a range type, describes the type of the full range.
912 - For a complex type, describes the type of each coordinate.
913 - For a special record or union type encoding a dynamic-sized type
914 in GNAT, a memoized pointer to a corresponding static version of
916 - Unused otherwise. */
918 struct type
*target_type
;
920 /* * For structure and union types, a description of each field.
921 For set and pascal array types, there is one "field",
922 whose type is the domain type of the set or array.
923 For range types, there are two "fields",
924 the minimum and maximum values (both inclusive).
925 For enum types, each possible value is described by one "field".
926 For a function or method type, a "field" for each parameter.
927 For C++ classes, there is one field for each base class (if it is
928 a derived class) plus one field for each class data member. Member
929 functions are recorded elsewhere.
931 Using a pointer to a separate array of fields
932 allows all types to have the same size, which is useful
933 because we can allocate the space for a type before
934 we know what to put in it. */
938 struct field
*fields
;
940 /* * Union member used for range types. */
942 struct range_bounds
*bounds
;
944 /* If this is a scalar type, then this is its corresponding
946 struct type
*complex_type
;
950 /* * Slot to point to additional language-specific fields of this
953 union type_specific type_specific
;
955 /* * Contains all dynamic type properties. */
956 struct dynamic_prop_list
*dyn_prop_list
;
959 /* * Number of bits allocated for alignment. */
961 #define TYPE_ALIGN_BITS 8
963 /* * A ``struct type'' describes a particular instance of a type, with
964 some particular qualification. */
968 /* Get the type code of this type.
970 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
971 type, you need to do `check_typedef (type)->code ()`. */
972 type_code
code () const
974 return this->main_type
->code
;
977 /* Set the type code of this type. */
978 void set_code (type_code code
)
980 this->main_type
->code
= code
;
983 /* Get the name of this type. */
984 const char *name () const
986 return this->main_type
->name
;
989 /* Set the name of this type. */
990 void set_name (const char *name
)
992 this->main_type
->name
= name
;
995 /* Get the number of fields of this type. */
996 int num_fields () const
998 return this->main_type
->nfields
;
1001 /* Set the number of fields of this type. */
1002 void set_num_fields (int num_fields
)
1004 this->main_type
->nfields
= num_fields
;
1007 /* Get the fields array of this type. */
1008 struct field
*fields () const
1010 return this->main_type
->flds_bnds
.fields
;
1013 /* Get the field at index IDX. */
1014 struct field
&field (int idx
) const
1016 return this->fields ()[idx
];
1019 /* Set the fields array of this type. */
1020 void set_fields (struct field
*fields
)
1022 this->main_type
->flds_bnds
.fields
= fields
;
1025 type
*index_type () const
1027 return this->field (0).type ();
1030 void set_index_type (type
*index_type
)
1032 this->field (0).set_type (index_type
);
1035 /* Get the bounds bounds of this type. The type must be a range type. */
1036 range_bounds
*bounds () const
1038 switch (this->code ())
1040 case TYPE_CODE_RANGE
:
1041 return this->main_type
->flds_bnds
.bounds
;
1043 case TYPE_CODE_ARRAY
:
1044 case TYPE_CODE_STRING
:
1045 return this->index_type ()->bounds ();
1048 gdb_assert_not_reached
1049 ("type::bounds called on type with invalid code");
1053 /* Set the bounds of this type. The type must be a range type. */
1054 void set_bounds (range_bounds
*bounds
)
1056 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1058 this->main_type
->flds_bnds
.bounds
= bounds
;
1061 ULONGEST
bit_stride () const
1063 return this->bounds ()->bit_stride ();
1066 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1067 the type is signed (unless TYPE_NOSIGN is set). */
1069 bool is_unsigned () const
1071 return this->main_type
->m_flag_unsigned
;
1074 void set_is_unsigned (bool is_unsigned
)
1076 this->main_type
->m_flag_unsigned
= is_unsigned
;
1079 bool has_no_signedness () const
1081 return this->main_type
->m_flag_nosign
;
1084 void set_has_no_signedness (bool has_no_signedness
)
1086 this->main_type
->m_flag_nosign
= has_no_signedness
;
1089 /* * Return the dynamic property of the requested KIND from this type's
1090 list of dynamic properties. */
1091 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1093 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1094 property to this type.
1096 This function assumes that this type is objfile-owned. */
1097 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1099 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1100 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1102 /* * Type that is a pointer to this type.
1103 NULL if no such pointer-to type is known yet.
1104 The debugger may add the address of such a type
1105 if it has to construct one later. */
1107 struct type
*pointer_type
;
1109 /* * C++: also need a reference type. */
1111 struct type
*reference_type
;
1113 /* * A C++ rvalue reference type added in C++11. */
1115 struct type
*rvalue_reference_type
;
1117 /* * Variant chain. This points to a type that differs from this
1118 one only in qualifiers and length. Currently, the possible
1119 qualifiers are const, volatile, code-space, data-space, and
1120 address class. The length may differ only when one of the
1121 address class flags are set. The variants are linked in a
1122 circular ring and share MAIN_TYPE. */
1126 /* * The alignment for this type. Zero means that the alignment was
1127 not specified in the debug info. Note that this is stored in a
1128 funny way: as the log base 2 (plus 1) of the alignment; so a
1129 value of 1 means the alignment is 1, and a value of 9 means the
1130 alignment is 256. */
1132 unsigned align_log2
: TYPE_ALIGN_BITS
;
1134 /* * Flags specific to this instance of the type, indicating where
1137 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1138 binary or-ed with the target type, with a special case for
1139 address class and space class. For example if this typedef does
1140 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1141 instance flags are completely inherited from the target type. No
1142 qualifiers can be cleared by the typedef. See also
1144 unsigned instance_flags
: 9;
1146 /* * Length of storage for a value of this type. The value is the
1147 expression in host bytes of what sizeof(type) would return. This
1148 size includes padding. For example, an i386 extended-precision
1149 floating point value really only occupies ten bytes, but most
1150 ABI's declare its size to be 12 bytes, to preserve alignment.
1151 A `struct type' representing such a floating-point type would
1152 have a `length' value of 12, even though the last two bytes are
1155 Since this field is expressed in host bytes, its value is appropriate
1156 to pass to memcpy and such (it is assumed that GDB itself always runs
1157 on an 8-bits addressable architecture). However, when using it for
1158 target address arithmetic (e.g. adding it to a target address), the
1159 type_length_units function should be used in order to get the length
1160 expressed in target addressable memory units. */
1164 /* * Core type, shared by a group of qualified types. */
1166 struct main_type
*main_type
;
1172 /* * The overloaded name.
1173 This is generally allocated in the objfile's obstack.
1174 However stabsread.c sometimes uses malloc. */
1178 /* * The number of methods with this name. */
1182 /* * The list of methods. */
1184 struct fn_field
*fn_fields
;
1191 /* * If is_stub is clear, this is the mangled name which we can look
1192 up to find the address of the method (FIXME: it would be cleaner
1193 to have a pointer to the struct symbol here instead).
1195 If is_stub is set, this is the portion of the mangled name which
1196 specifies the arguments. For example, "ii", if there are two int
1197 arguments, or "" if there are no arguments. See gdb_mangle_name
1198 for the conversion from this format to the one used if is_stub is
1201 const char *physname
;
1203 /* * The function type for the method.
1205 (This comment used to say "The return value of the method", but
1206 that's wrong. The function type is expected here, i.e. something
1207 with TYPE_CODE_METHOD, and *not* the return-value type). */
1211 /* * For virtual functions. First baseclass that defines this
1212 virtual function. */
1214 struct type
*fcontext
;
1218 unsigned int is_const
:1;
1219 unsigned int is_volatile
:1;
1220 unsigned int is_private
:1;
1221 unsigned int is_protected
:1;
1222 unsigned int is_artificial
:1;
1224 /* * A stub method only has some fields valid (but they are enough
1225 to reconstruct the rest of the fields). */
1227 unsigned int is_stub
:1;
1229 /* * True if this function is a constructor, false otherwise. */
1231 unsigned int is_constructor
: 1;
1233 /* * True if this function is deleted, false otherwise. */
1235 unsigned int is_deleted
: 1;
1237 /* * DW_AT_defaulted attribute for this function. The value is one
1238 of the DW_DEFAULTED constants. */
1240 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1244 unsigned int dummy
:6;
1246 /* * Index into that baseclass's virtual function table, minus 2;
1247 else if static: VOFFSET_STATIC; else: 0. */
1249 unsigned int voffset
:16;
1251 #define VOFFSET_STATIC 1
1257 /* * Unqualified name to be prefixed by owning class qualified
1262 /* * Type this typedef named NAME represents. */
1266 /* * True if this field was declared protected, false otherwise. */
1267 unsigned int is_protected
: 1;
1269 /* * True if this field was declared private, false otherwise. */
1270 unsigned int is_private
: 1;
1273 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1274 TYPE_CODE_UNION nodes. */
1276 struct cplus_struct_type
1278 /* * Number of base classes this type derives from. The
1279 baseclasses are stored in the first N_BASECLASSES fields
1280 (i.e. the `fields' field of the struct type). The only fields
1281 of struct field that are used are: type, name, loc.bitpos. */
1283 short n_baseclasses
;
1285 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1286 All access to this field must be through TYPE_VPTR_FIELDNO as one
1287 thing it does is check whether the field has been initialized.
1288 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1289 which for portability reasons doesn't initialize this field.
1290 TYPE_VPTR_FIELDNO returns -1 for this case.
1292 If -1, we were unable to find the virtual function table pointer in
1293 initial symbol reading, and get_vptr_fieldno should be called to find
1294 it if possible. get_vptr_fieldno will update this field if possible.
1295 Otherwise the value is left at -1.
1297 Unused if this type does not have virtual functions. */
1301 /* * Number of methods with unique names. All overloaded methods
1302 with the same name count only once. */
1306 /* * Number of template arguments. */
1308 unsigned short n_template_arguments
;
1310 /* * One if this struct is a dynamic class, as defined by the
1311 Itanium C++ ABI: if it requires a virtual table pointer,
1312 because it or any of its base classes have one or more virtual
1313 member functions or virtual base classes. Minus one if not
1314 dynamic. Zero if not yet computed. */
1318 /* * The calling convention for this type, fetched from the
1319 DW_AT_calling_convention attribute. The value is one of the
1322 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1324 /* * The base class which defined the virtual function table pointer. */
1326 struct type
*vptr_basetype
;
1328 /* * For derived classes, the number of base classes is given by
1329 n_baseclasses and virtual_field_bits is a bit vector containing
1330 one bit per base class. If the base class is virtual, the
1331 corresponding bit will be set.
1336 class C : public B, public virtual A {};
1338 B is a baseclass of C; A is a virtual baseclass for C.
1339 This is a C++ 2.0 language feature. */
1341 B_TYPE
*virtual_field_bits
;
1343 /* * For classes with private fields, the number of fields is
1344 given by nfields and private_field_bits is a bit vector
1345 containing one bit per field.
1347 If the field is private, the corresponding bit will be set. */
1349 B_TYPE
*private_field_bits
;
1351 /* * For classes with protected fields, the number of fields is
1352 given by nfields and protected_field_bits is a bit vector
1353 containing one bit per field.
1355 If the field is private, the corresponding bit will be set. */
1357 B_TYPE
*protected_field_bits
;
1359 /* * For classes with fields to be ignored, either this is
1360 optimized out or this field has length 0. */
1362 B_TYPE
*ignore_field_bits
;
1364 /* * For classes, structures, and unions, a description of each
1365 field, which consists of an overloaded name, followed by the
1366 types of arguments that the method expects, and then the name
1367 after it has been renamed to make it distinct.
1369 fn_fieldlists points to an array of nfn_fields of these. */
1371 struct fn_fieldlist
*fn_fieldlists
;
1373 /* * typedefs defined inside this class. typedef_field points to
1374 an array of typedef_field_count elements. */
1376 struct decl_field
*typedef_field
;
1378 unsigned typedef_field_count
;
1380 /* * The nested types defined by this type. nested_types points to
1381 an array of nested_types_count elements. */
1383 struct decl_field
*nested_types
;
1385 unsigned nested_types_count
;
1387 /* * The template arguments. This is an array with
1388 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1391 struct symbol
**template_arguments
;
1394 /* * Struct used to store conversion rankings. */
1400 /* * When two conversions are of the same type and therefore have
1401 the same rank, subrank is used to differentiate the two.
1403 Eg: Two derived-class-pointer to base-class-pointer conversions
1404 would both have base pointer conversion rank, but the
1405 conversion with the shorter distance to the ancestor is
1406 preferable. 'subrank' would be used to reflect that. */
1411 /* * Used for ranking a function for overload resolution. */
1413 typedef std::vector
<rank
> badness_vector
;
1415 /* * GNAT Ada-specific information for various Ada types. */
1417 struct gnat_aux_type
1419 /* * Parallel type used to encode information about dynamic types
1420 used in Ada (such as variant records, variable-size array,
1422 struct type
* descriptive_type
;
1425 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1429 /* * The calling convention for targets supporting multiple ABIs.
1430 Right now this is only fetched from the Dwarf-2
1431 DW_AT_calling_convention attribute. The value is one of the
1434 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1436 /* * Whether this function normally returns to its caller. It is
1437 set from the DW_AT_noreturn attribute if set on the
1438 DW_TAG_subprogram. */
1440 unsigned int is_noreturn
: 1;
1442 /* * Only those DW_TAG_call_site's in this function that have
1443 DW_AT_call_tail_call set are linked in this list. Function
1444 without its tail call list complete
1445 (DW_AT_call_all_tail_calls or its superset
1446 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1447 DW_TAG_call_site's exist in such function. */
1449 struct call_site
*tail_call_list
;
1451 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1452 contains the method. */
1454 struct type
*self_type
;
1457 /* struct call_site_parameter can be referenced in callees by several ways. */
1459 enum call_site_parameter_kind
1461 /* * Use field call_site_parameter.u.dwarf_reg. */
1462 CALL_SITE_PARAMETER_DWARF_REG
,
1464 /* * Use field call_site_parameter.u.fb_offset. */
1465 CALL_SITE_PARAMETER_FB_OFFSET
,
1467 /* * Use field call_site_parameter.u.param_offset. */
1468 CALL_SITE_PARAMETER_PARAM_OFFSET
1471 struct call_site_target
1473 union field_location loc
;
1475 /* * Discriminant for union field_location. */
1477 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1480 union call_site_parameter_u
1482 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1483 as DWARF register number, for register passed
1488 /* * Offset from the callee's frame base, for stack passed
1489 parameters. This equals offset from the caller's stack
1492 CORE_ADDR fb_offset
;
1494 /* * Offset relative to the start of this PER_CU to
1495 DW_TAG_formal_parameter which is referenced by both
1496 caller and the callee. */
1498 cu_offset param_cu_off
;
1501 struct call_site_parameter
1503 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1505 union call_site_parameter_u u
;
1507 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1509 const gdb_byte
*value
;
1512 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1513 It may be NULL if not provided by DWARF. */
1515 const gdb_byte
*data_value
;
1516 size_t data_value_size
;
1519 /* * A place where a function gets called from, represented by
1520 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1524 /* * Address of the first instruction after this call. It must be
1525 the first field as we overload core_addr_hash and core_addr_eq
1530 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1532 struct call_site
*tail_call_next
;
1534 /* * Describe DW_AT_call_target. Missing attribute uses
1535 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1537 struct call_site_target target
;
1539 /* * Size of the PARAMETER array. */
1541 unsigned parameter_count
;
1543 /* * CU of the function where the call is located. It gets used
1544 for DWARF blocks execution in the parameter array below. */
1546 dwarf2_per_cu_data
*per_cu
;
1548 /* objfile of the function where the call is located. */
1550 dwarf2_per_objfile
*per_objfile
;
1552 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1554 struct call_site_parameter parameter
[1];
1557 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1558 static structure. */
1560 extern const struct cplus_struct_type cplus_struct_default
;
1562 extern void allocate_cplus_struct_type (struct type
*);
1564 #define INIT_CPLUS_SPECIFIC(type) \
1565 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1566 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1567 &cplus_struct_default)
1569 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1571 #define HAVE_CPLUS_STRUCT(type) \
1572 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1573 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1575 #define INIT_NONE_SPECIFIC(type) \
1576 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1577 TYPE_MAIN_TYPE (type)->type_specific = {})
1579 extern const struct gnat_aux_type gnat_aux_default
;
1581 extern void allocate_gnat_aux_type (struct type
*);
1583 #define INIT_GNAT_SPECIFIC(type) \
1584 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1585 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1586 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1587 /* * A macro that returns non-zero if the type-specific data should be
1588 read as "gnat-stuff". */
1589 #define HAVE_GNAT_AUX_INFO(type) \
1590 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1592 /* * True if TYPE is known to be an Ada type of some kind. */
1593 #define ADA_TYPE_P(type) \
1594 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1595 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1596 && TYPE_FIXED_INSTANCE (type)))
1598 #define INIT_FUNC_SPECIFIC(type) \
1599 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1600 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1601 TYPE_ZALLOC (type, \
1602 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1604 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1605 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1606 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1607 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1608 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1609 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1610 #define TYPE_CHAIN(thistype) (thistype)->chain
1611 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1612 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1613 so you only have to call check_typedef once. Since allocate_value
1614 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1615 #define TYPE_LENGTH(thistype) (thistype)->length
1617 /* * Return the alignment of the type in target addressable memory
1618 units, or 0 if no alignment was specified. */
1619 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1621 /* * Return the alignment of the type in target addressable memory
1622 units, or 0 if no alignment was specified. */
1623 extern unsigned type_raw_align (struct type
*);
1625 /* * Return the alignment of the type in target addressable memory
1626 units. Return 0 if the alignment cannot be determined; but note
1627 that this makes an effort to compute the alignment even it it was
1628 not specified in the debug info. */
1629 extern unsigned type_align (struct type
*);
1631 /* * Set the alignment of the type. The alignment must be a power of
1632 2. Returns false if the given value does not fit in the available
1633 space in struct type. */
1634 extern bool set_type_align (struct type
*, ULONGEST
);
1636 /* Property accessors for the type data location. */
1637 #define TYPE_DATA_LOCATION(thistype) \
1638 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1639 #define TYPE_DATA_LOCATION_BATON(thistype) \
1640 TYPE_DATA_LOCATION (thistype)->data.baton
1641 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1642 (TYPE_DATA_LOCATION (thistype)->const_val ())
1643 #define TYPE_DATA_LOCATION_KIND(thistype) \
1644 (TYPE_DATA_LOCATION (thistype)->kind ())
1645 #define TYPE_DYNAMIC_LENGTH(thistype) \
1646 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1648 /* Property accessors for the type allocated/associated. */
1649 #define TYPE_ALLOCATED_PROP(thistype) \
1650 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1651 #define TYPE_ASSOCIATED_PROP(thistype) \
1652 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1656 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1657 /* Do not call this, use TYPE_SELF_TYPE. */
1658 extern struct type
*internal_type_self_type (struct type
*);
1659 extern void set_type_self_type (struct type
*, struct type
*);
1661 extern int internal_type_vptr_fieldno (struct type
*);
1662 extern void set_type_vptr_fieldno (struct type
*, int);
1663 extern struct type
*internal_type_vptr_basetype (struct type
*);
1664 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1665 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1666 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1668 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1669 #define TYPE_SPECIFIC_FIELD(thistype) \
1670 TYPE_MAIN_TYPE(thistype)->type_specific_field
1671 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1672 where we're trying to print an Ada array using the C language.
1673 In that case, there is no "cplus_stuff", but the C language assumes
1674 that there is. What we do, in that case, is pretend that there is
1675 an implicit one which is the default cplus stuff. */
1676 #define TYPE_CPLUS_SPECIFIC(thistype) \
1677 (!HAVE_CPLUS_STRUCT(thistype) \
1678 ? (struct cplus_struct_type*)&cplus_struct_default \
1679 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1680 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1681 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1682 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1683 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1684 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1685 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1686 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1687 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1688 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1689 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1690 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1691 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1692 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1693 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1694 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1695 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1697 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1698 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1699 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1701 #define FIELD_NAME(thisfld) ((thisfld).name)
1702 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1703 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1704 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1705 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1706 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1707 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1708 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1709 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1710 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1711 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1712 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1713 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1714 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1715 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1716 #define SET_FIELD_PHYSNAME(thisfld, name) \
1717 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1718 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1719 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1720 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1721 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1722 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1723 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1724 FIELD_DWARF_BLOCK (thisfld) = (addr))
1725 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1726 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1728 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1729 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1730 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1731 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1732 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1733 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1734 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1735 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1736 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1737 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1739 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1740 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1741 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1742 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1743 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1744 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1745 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1746 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1747 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1748 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1749 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1750 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1751 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1752 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1753 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1754 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1755 #define TYPE_FIELD_PRIVATE(thistype, n) \
1756 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1757 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1758 #define TYPE_FIELD_PROTECTED(thistype, n) \
1759 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1760 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1761 #define TYPE_FIELD_IGNORE(thistype, n) \
1762 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1763 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1764 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1765 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1766 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1768 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1769 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1770 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1771 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1772 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1774 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1775 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1776 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1777 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1778 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1779 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1781 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1782 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1783 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1784 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1785 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1786 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1787 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1788 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1789 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1790 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1791 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1792 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1793 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1794 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1795 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1796 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1797 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1799 /* Accessors for typedefs defined by a class. */
1800 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1801 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1802 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1803 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1804 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1805 TYPE_TYPEDEF_FIELD (thistype, n).name
1806 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1807 TYPE_TYPEDEF_FIELD (thistype, n).type
1808 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1809 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1810 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1811 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1812 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1813 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1815 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1816 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1817 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1818 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1819 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1820 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1821 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1822 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1823 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1824 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1825 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1826 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1827 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1828 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1830 #define TYPE_IS_OPAQUE(thistype) \
1831 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1832 || ((thistype)->code () == TYPE_CODE_UNION)) \
1833 && ((thistype)->num_fields () == 0) \
1834 && (!HAVE_CPLUS_STRUCT (thistype) \
1835 || TYPE_NFN_FIELDS (thistype) == 0) \
1836 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1838 /* * A helper macro that returns the name of a type or "unnamed type"
1839 if the type has no name. */
1841 #define TYPE_SAFE_NAME(type) \
1842 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1844 /* * A helper macro that returns the name of an error type. If the
1845 type has a name, it is used; otherwise, a default is used. */
1847 #define TYPE_ERROR_NAME(type) \
1848 (type->name () ? type->name () : _("<error type>"))
1850 /* Given TYPE, return its floatformat. */
1851 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1855 /* Integral types. */
1857 /* Implicit size/sign (based on the architecture's ABI). */
1858 struct type
*builtin_void
;
1859 struct type
*builtin_char
;
1860 struct type
*builtin_short
;
1861 struct type
*builtin_int
;
1862 struct type
*builtin_long
;
1863 struct type
*builtin_signed_char
;
1864 struct type
*builtin_unsigned_char
;
1865 struct type
*builtin_unsigned_short
;
1866 struct type
*builtin_unsigned_int
;
1867 struct type
*builtin_unsigned_long
;
1868 struct type
*builtin_bfloat16
;
1869 struct type
*builtin_half
;
1870 struct type
*builtin_float
;
1871 struct type
*builtin_double
;
1872 struct type
*builtin_long_double
;
1873 struct type
*builtin_complex
;
1874 struct type
*builtin_double_complex
;
1875 struct type
*builtin_string
;
1876 struct type
*builtin_bool
;
1877 struct type
*builtin_long_long
;
1878 struct type
*builtin_unsigned_long_long
;
1879 struct type
*builtin_decfloat
;
1880 struct type
*builtin_decdouble
;
1881 struct type
*builtin_declong
;
1883 /* "True" character types.
1884 We use these for the '/c' print format, because c_char is just a
1885 one-byte integral type, which languages less laid back than C
1886 will print as ... well, a one-byte integral type. */
1887 struct type
*builtin_true_char
;
1888 struct type
*builtin_true_unsigned_char
;
1890 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1891 is for when an architecture needs to describe a register that has
1893 struct type
*builtin_int0
;
1894 struct type
*builtin_int8
;
1895 struct type
*builtin_uint8
;
1896 struct type
*builtin_int16
;
1897 struct type
*builtin_uint16
;
1898 struct type
*builtin_int24
;
1899 struct type
*builtin_uint24
;
1900 struct type
*builtin_int32
;
1901 struct type
*builtin_uint32
;
1902 struct type
*builtin_int64
;
1903 struct type
*builtin_uint64
;
1904 struct type
*builtin_int128
;
1905 struct type
*builtin_uint128
;
1907 /* Wide character types. */
1908 struct type
*builtin_char16
;
1909 struct type
*builtin_char32
;
1910 struct type
*builtin_wchar
;
1912 /* Pointer types. */
1914 /* * `pointer to data' type. Some target platforms use an implicitly
1915 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1916 struct type
*builtin_data_ptr
;
1918 /* * `pointer to function (returning void)' type. Harvard
1919 architectures mean that ABI function and code pointers are not
1920 interconvertible. Similarly, since ANSI, C standards have
1921 explicitly said that pointers to functions and pointers to data
1922 are not interconvertible --- that is, you can't cast a function
1923 pointer to void * and back, and expect to get the same value.
1924 However, all function pointer types are interconvertible, so void
1925 (*) () can server as a generic function pointer. */
1927 struct type
*builtin_func_ptr
;
1929 /* * `function returning pointer to function (returning void)' type.
1930 The final void return type is not significant for it. */
1932 struct type
*builtin_func_func
;
1934 /* Special-purpose types. */
1936 /* * This type is used to represent a GDB internal function. */
1938 struct type
*internal_fn
;
1940 /* * This type is used to represent an xmethod. */
1941 struct type
*xmethod
;
1944 /* * Return the type table for the specified architecture. */
1946 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1948 /* * Per-objfile types used by symbol readers. */
1952 /* Basic types based on the objfile architecture. */
1953 struct type
*builtin_void
;
1954 struct type
*builtin_char
;
1955 struct type
*builtin_short
;
1956 struct type
*builtin_int
;
1957 struct type
*builtin_long
;
1958 struct type
*builtin_long_long
;
1959 struct type
*builtin_signed_char
;
1960 struct type
*builtin_unsigned_char
;
1961 struct type
*builtin_unsigned_short
;
1962 struct type
*builtin_unsigned_int
;
1963 struct type
*builtin_unsigned_long
;
1964 struct type
*builtin_unsigned_long_long
;
1965 struct type
*builtin_half
;
1966 struct type
*builtin_float
;
1967 struct type
*builtin_double
;
1968 struct type
*builtin_long_double
;
1970 /* * This type is used to represent symbol addresses. */
1971 struct type
*builtin_core_addr
;
1973 /* * This type represents a type that was unrecognized in symbol
1975 struct type
*builtin_error
;
1977 /* * Types used for symbols with no debug information. */
1978 struct type
*nodebug_text_symbol
;
1979 struct type
*nodebug_text_gnu_ifunc_symbol
;
1980 struct type
*nodebug_got_plt_symbol
;
1981 struct type
*nodebug_data_symbol
;
1982 struct type
*nodebug_unknown_symbol
;
1983 struct type
*nodebug_tls_symbol
;
1986 /* * Return the type table for the specified objfile. */
1988 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1990 /* Explicit floating-point formats. See "floatformat.h". */
1991 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1992 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1993 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1994 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1995 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1996 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1997 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1998 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1999 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2000 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2001 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2002 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2003 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2005 /* Allocate space for storing data associated with a particular
2006 type. We ensure that the space is allocated using the same
2007 mechanism that was used to allocate the space for the type
2008 structure itself. I.e. if the type is on an objfile's
2009 objfile_obstack, then the space for data associated with that type
2010 will also be allocated on the objfile_obstack. If the type is
2011 associated with a gdbarch, then the space for data associated with that
2012 type will also be allocated on the gdbarch_obstack.
2014 If a type is not associated with neither an objfile or a gdbarch then
2015 you should not use this macro to allocate space for data, instead you
2016 should call xmalloc directly, and ensure the memory is correctly freed
2017 when it is no longer needed. */
2019 #define TYPE_ALLOC(t,size) \
2020 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2021 ? &TYPE_OBJFILE (t)->objfile_obstack \
2022 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2026 /* See comment on TYPE_ALLOC. */
2028 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2030 /* Use alloc_type to allocate a type owned by an objfile. Use
2031 alloc_type_arch to allocate a type owned by an architecture. Use
2032 alloc_type_copy to allocate a type with the same owner as a
2033 pre-existing template type, no matter whether objfile or
2035 extern struct type
*alloc_type (struct objfile
*);
2036 extern struct type
*alloc_type_arch (struct gdbarch
*);
2037 extern struct type
*alloc_type_copy (const struct type
*);
2039 /* * Return the type's architecture. For types owned by an
2040 architecture, that architecture is returned. For types owned by an
2041 objfile, that objfile's architecture is returned. */
2043 extern struct gdbarch
*get_type_arch (const struct type
*);
2045 /* * This returns the target type (or NULL) of TYPE, also skipping
2048 extern struct type
*get_target_type (struct type
*type
);
2050 /* Return the equivalent of TYPE_LENGTH, but in number of target
2051 addressable memory units of the associated gdbarch instead of bytes. */
2053 extern unsigned int type_length_units (struct type
*type
);
2055 /* * Helper function to construct objfile-owned types. */
2057 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2059 extern struct type
*init_integer_type (struct objfile
*, int, int,
2061 extern struct type
*init_character_type (struct objfile
*, int, int,
2063 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2065 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2066 const struct floatformat
**,
2067 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2068 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2069 extern struct type
*init_complex_type (const char *, struct type
*);
2070 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2073 /* Helper functions to construct architecture-owned types. */
2074 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2076 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2078 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2080 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2082 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2083 const struct floatformat
**);
2084 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2085 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2088 /* Helper functions to construct a struct or record type. An
2089 initially empty type is created using arch_composite_type().
2090 Fields are then added using append_composite_type_field*(). A union
2091 type has its size set to the largest field. A struct type has each
2092 field packed against the previous. */
2094 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2095 const char *name
, enum type_code code
);
2096 extern void append_composite_type_field (struct type
*t
, const char *name
,
2097 struct type
*field
);
2098 extern void append_composite_type_field_aligned (struct type
*t
,
2102 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2103 struct type
*field
);
2105 /* Helper functions to construct a bit flags type. An initially empty
2106 type is created using arch_flag_type(). Flags are then added using
2107 append_flag_type_field() and append_flag_type_flag(). */
2108 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2109 const char *name
, int bit
);
2110 extern void append_flags_type_field (struct type
*type
,
2111 int start_bitpos
, int nr_bits
,
2112 struct type
*field_type
, const char *name
);
2113 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2116 extern void make_vector_type (struct type
*array_type
);
2117 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2119 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2120 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2121 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2124 extern struct type
*make_reference_type (struct type
*, struct type
**,
2127 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2129 extern struct type
*make_restrict_type (struct type
*);
2131 extern struct type
*make_unqualified_type (struct type
*);
2133 extern struct type
*make_atomic_type (struct type
*);
2135 extern void replace_type (struct type
*, struct type
*);
2137 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2139 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2141 extern struct type
*make_type_with_address_space (struct type
*type
,
2142 int space_identifier
);
2144 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2146 extern struct type
*lookup_methodptr_type (struct type
*);
2148 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2149 struct type
*to_type
, struct field
*args
,
2150 int nargs
, int varargs
);
2152 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2155 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2157 extern struct type
*allocate_stub_method (struct type
*);
2159 extern const char *type_name_or_error (struct type
*type
);
2163 /* The field of the element, or NULL if no element was found. */
2164 struct field
*field
;
2166 /* The bit offset of the element in the parent structure. */
2170 /* Given a type TYPE, lookup the field and offset of the component named
2173 TYPE can be either a struct or union, or a pointer or reference to
2174 a struct or union. If it is a pointer or reference, its target
2175 type is automatically used. Thus '.' and '->' are interchangable,
2176 as specified for the definitions of the expression element types
2177 STRUCTOP_STRUCT and STRUCTOP_PTR.
2179 If NOERR is nonzero, the returned structure will have field set to
2180 NULL if there is no component named NAME.
2182 If the component NAME is a field in an anonymous substructure of
2183 TYPE, the returned offset is a "global" offset relative to TYPE
2184 rather than an offset within the substructure. */
2186 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2188 /* Given a type TYPE, lookup the type of the component named NAME.
2190 TYPE can be either a struct or union, or a pointer or reference to
2191 a struct or union. If it is a pointer or reference, its target
2192 type is automatically used. Thus '.' and '->' are interchangable,
2193 as specified for the definitions of the expression element types
2194 STRUCTOP_STRUCT and STRUCTOP_PTR.
2196 If NOERR is nonzero, return NULL if there is no component named
2199 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2201 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2203 extern struct type
*lookup_pointer_type (struct type
*);
2205 extern struct type
*make_function_type (struct type
*, struct type
**);
2207 extern struct type
*lookup_function_type (struct type
*);
2209 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2213 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2217 extern struct type
*create_array_type_with_stride
2218 (struct type
*, struct type
*, struct type
*,
2219 struct dynamic_prop
*, unsigned int);
2221 extern struct type
*create_range_type (struct type
*, struct type
*,
2222 const struct dynamic_prop
*,
2223 const struct dynamic_prop
*,
2226 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2227 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2230 extern struct type
* create_range_type_with_stride
2231 (struct type
*result_type
, struct type
*index_type
,
2232 const struct dynamic_prop
*low_bound
,
2233 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2234 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2236 extern struct type
*create_array_type (struct type
*, struct type
*,
2239 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2241 extern struct type
*create_string_type (struct type
*, struct type
*,
2243 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2245 extern struct type
*create_set_type (struct type
*, struct type
*);
2247 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2250 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2253 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2255 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2257 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2258 ADDR specifies the location of the variable the type is bound to.
2259 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2260 static properties is returned. */
2261 extern struct type
*resolve_dynamic_type
2262 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2265 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2266 extern int is_dynamic_type (struct type
*type
);
2268 extern struct type
*check_typedef (struct type
*);
2270 extern void check_stub_method_group (struct type
*, int);
2272 extern char *gdb_mangle_name (struct type
*, int, int);
2274 extern struct type
*lookup_typename (const struct language_defn
*,
2275 const char *, const struct block
*, int);
2277 extern struct type
*lookup_template_type (const char *, struct type
*,
2278 const struct block
*);
2280 extern int get_vptr_fieldno (struct type
*, struct type
**);
2282 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2284 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2285 LONGEST
*high_bound
);
2287 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2289 extern int class_types_same_p (const struct type
*, const struct type
*);
2291 extern int is_ancestor (struct type
*, struct type
*);
2293 extern int is_public_ancestor (struct type
*, struct type
*);
2295 extern int is_unique_ancestor (struct type
*, struct value
*);
2297 /* Overload resolution */
2299 /* * Badness if parameter list length doesn't match arg list length. */
2300 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2302 /* * Dummy badness value for nonexistent parameter positions. */
2303 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2304 /* * Badness if no conversion among types. */
2305 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2307 /* * Badness of an exact match. */
2308 extern const struct rank EXACT_MATCH_BADNESS
;
2310 /* * Badness of integral promotion. */
2311 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2312 /* * Badness of floating promotion. */
2313 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2314 /* * Badness of converting a derived class pointer
2315 to a base class pointer. */
2316 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2317 /* * Badness of integral conversion. */
2318 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2319 /* * Badness of floating conversion. */
2320 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2321 /* * Badness of integer<->floating conversions. */
2322 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2323 /* * Badness of conversion of pointer to void pointer. */
2324 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2325 /* * Badness of conversion to boolean. */
2326 extern const struct rank BOOL_CONVERSION_BADNESS
;
2327 /* * Badness of converting derived to base class. */
2328 extern const struct rank BASE_CONVERSION_BADNESS
;
2329 /* * Badness of converting from non-reference to reference. Subrank
2330 is the type of reference conversion being done. */
2331 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2332 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2333 /* * Conversion to rvalue reference. */
2334 #define REFERENCE_CONVERSION_RVALUE 1
2335 /* * Conversion to const lvalue reference. */
2336 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2338 /* * Badness of converting integer 0 to NULL pointer. */
2339 extern const struct rank NULL_POINTER_CONVERSION
;
2340 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2342 extern const struct rank CV_CONVERSION_BADNESS
;
2343 #define CV_CONVERSION_CONST 1
2344 #define CV_CONVERSION_VOLATILE 2
2346 /* Non-standard conversions allowed by the debugger */
2348 /* * Converting a pointer to an int is usually OK. */
2349 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2351 /* * Badness of converting a (non-zero) integer constant
2353 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2355 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2356 extern int compare_ranks (struct rank a
, struct rank b
);
2358 extern int compare_badness (const badness_vector
&,
2359 const badness_vector
&);
2361 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2362 gdb::array_view
<value
*> args
);
2364 extern struct rank
rank_one_type (struct type
*, struct type
*,
2367 extern void recursive_dump_type (struct type
*, int);
2369 extern int field_is_static (struct field
*);
2373 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2374 const struct value_print_options
*,
2375 int, struct ui_file
*);
2377 extern int can_dereference (struct type
*);
2379 extern int is_integral_type (struct type
*);
2381 extern int is_floating_type (struct type
*);
2383 extern int is_scalar_type (struct type
*type
);
2385 extern int is_scalar_type_recursive (struct type
*);
2387 extern int class_or_union_p (const struct type
*);
2389 extern void maintenance_print_type (const char *, int);
2391 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2393 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2395 htab_t copied_types
);
2397 extern struct type
*copy_type (const struct type
*type
);
2399 extern bool types_equal (struct type
*, struct type
*);
2401 extern bool types_deeply_equal (struct type
*, struct type
*);
2403 extern int type_not_allocated (const struct type
*type
);
2405 extern int type_not_associated (const struct type
*type
);
2407 /* * When the type includes explicit byte ordering, return that.
2408 Otherwise, the byte ordering from gdbarch_byte_order for
2409 get_type_arch is returned. */
2411 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2413 /* A flag to enable printing of debugging information of C++
2416 extern unsigned int overload_debug
;
2418 #endif /* GDBTYPES_H */