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 /* * Unsigned integer type. If this is not set for a TYPE_CODE_INT,
214 the type is signed (unless TYPE_NOSIGN (below) is set). */
216 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
218 /* * No sign for this type. In C++, "char", "signed char", and
219 "unsigned char" are distinct types; so we need an extra flag to
220 indicate the absence of a sign! */
222 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
224 /* * A compiler may supply dwarf instrumentation
225 that indicates the desired endian interpretation of the variable
226 differs from the native endian representation. */
228 #define TYPE_ENDIANITY_NOT_DEFAULT(t) (TYPE_MAIN_TYPE (t)->flag_endianity_not_default)
230 /* * This appears in a type's flags word if it is a stub type (e.g.,
231 if someone referenced a type that wasn't defined in a source file
232 via (struct sir_not_appearing_in_this_film *)). */
234 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
236 /* * The target type of this type is a stub type, and this type needs
237 to be updated if it gets un-stubbed in check_typedef. Used for
238 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
239 based on the TYPE_LENGTH of the target type. Also, set for
240 TYPE_CODE_TYPEDEF. */
242 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
244 /* * This is a function type which appears to have a prototype. We
245 need this for function calls in order to tell us if it's necessary
246 to coerce the args, or to just do the standard conversions. This
247 is used with a short field. */
249 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
251 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
254 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
256 /* * Identify a vector type. Gcc is handling this by adding an extra
257 attribute to the array type. We slurp that in as a new flag of a
258 type. This is used only in dwarf2read.c. */
259 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
261 /* * The debugging formats (especially STABS) do not contain enough
262 information to represent all Ada types---especially those whose
263 size depends on dynamic quantities. Therefore, the GNAT Ada
264 compiler includes extra information in the form of additional type
265 definitions connected by naming conventions. This flag indicates
266 that the type is an ordinary (unencoded) GDB type that has been
267 created from the necessary run-time information, and does not need
268 further interpretation. Optionally marks ordinary, fixed-size GDB
271 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
273 /* * This debug target supports TYPE_STUB(t). In the unsupported case
274 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
275 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
276 guessed the TYPE_STUB(t) value (see dwarfread.c). */
278 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
280 /* * Not textual. By default, GDB treats all single byte integers as
281 characters (or elements of strings) unless this flag is set. */
283 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
285 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
286 address is returned by this function call. TYPE_TARGET_TYPE
287 determines the final returned function type to be presented to
290 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
292 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
293 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
294 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
296 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
297 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
298 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
300 /* * True if this type was declared using the "class" keyword. This is
301 only valid for C++ structure and enum types. If false, a structure
302 was declared as a "struct"; if true it was declared "class". For
303 enum types, this is true when "enum class" or "enum struct" was
304 used to declare the type.. */
306 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
308 /* * True if this type is a "flag" enum. A flag enum is one where all
309 the values are pairwise disjoint when "and"ed together. This
310 affects how enum values are printed. */
312 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
314 /* * Constant type. If this is set, the corresponding type has a
317 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
319 /* * Volatile type. If this is set, the corresponding type has a
320 volatile modifier. */
322 #define TYPE_VOLATILE(t) \
323 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
325 /* * Restrict type. If this is set, the corresponding type has a
326 restrict modifier. */
328 #define TYPE_RESTRICT(t) \
329 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
331 /* * Atomic type. If this is set, the corresponding type has an
334 #define TYPE_ATOMIC(t) \
335 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
337 /* * True if this type represents either an lvalue or lvalue reference type. */
339 #define TYPE_IS_REFERENCE(t) \
340 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
342 /* * True if this type is allocatable. */
343 #define TYPE_IS_ALLOCATABLE(t) \
344 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
346 /* * True if this type has variant parts. */
347 #define TYPE_HAS_VARIANT_PARTS(t) \
348 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
350 /* * True if this type has a dynamic length. */
351 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
352 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
354 /* * Instruction-space delimited type. This is for Harvard architectures
355 which have separate instruction and data address spaces (and perhaps
358 GDB usually defines a flat address space that is a superset of the
359 architecture's two (or more) address spaces, but this is an extension
360 of the architecture's model.
362 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
363 resides in instruction memory, even if its address (in the extended
364 flat address space) does not reflect this.
366 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
367 corresponding type resides in the data memory space, even if
368 this is not indicated by its (flat address space) address.
370 If neither flag is set, the default space for functions / methods
371 is instruction space, and for data objects is data memory. */
373 #define TYPE_CODE_SPACE(t) \
374 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
376 #define TYPE_DATA_SPACE(t) \
377 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
379 /* * Address class flags. Some environments provide for pointers
380 whose size is different from that of a normal pointer or address
381 types where the bits are interpreted differently than normal
382 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
383 target specific ways to represent these different types of address
386 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
387 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
388 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
389 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
390 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
391 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
392 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
393 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
395 /* * Information about a single discriminant. */
397 struct discriminant_range
399 /* * The range of values for the variant. This is an inclusive
403 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
404 is true if this should be an unsigned comparison; false for
406 bool contains (ULONGEST value
, bool is_unsigned
) const
409 return value
>= low
&& value
<= high
;
410 LONGEST valuel
= (LONGEST
) value
;
411 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
417 /* * A single variant. A variant has a list of discriminant values.
418 When the discriminator matches one of these, the variant is
419 enabled. Each variant controls zero or more fields; and may also
420 control other variant parts as well. This struct corresponds to
421 DW_TAG_variant in DWARF. */
423 struct variant
: allocate_on_obstack
425 /* * The discriminant ranges for this variant. */
426 gdb::array_view
<discriminant_range
> discriminants
;
428 /* * The fields controlled by this variant. This is inclusive on
429 the low end and exclusive on the high end. A variant may not
430 control any fields, in which case the two values will be equal.
431 These are indexes into the type's array of fields. */
435 /* * Variant parts controlled by this variant. */
436 gdb::array_view
<variant_part
> parts
;
438 /* * Return true if this is the default variant. The default
439 variant can be recognized because it has no associated
441 bool is_default () const
443 return discriminants
.empty ();
446 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
447 if this should be an unsigned comparison; false for signed. */
448 bool matches (ULONGEST value
, bool is_unsigned
) const;
451 /* * A variant part. Each variant part has an optional discriminant
452 and holds an array of variants. This struct corresponds to
453 DW_TAG_variant_part in DWARF. */
455 struct variant_part
: allocate_on_obstack
457 /* * The index of the discriminant field in the outer type. This is
458 an index into the type's array of fields. If this is -1, there
459 is no discriminant, and only the default variant can be
460 considered to be selected. */
461 int discriminant_index
;
463 /* * True if this discriminant is unsigned; false if signed. This
464 comes from the type of the discriminant. */
467 /* * The variants that are controlled by this variant part. Note
468 that these will always be sorted by field number. */
469 gdb::array_view
<variant
> variants
;
473 enum dynamic_prop_kind
475 PROP_UNDEFINED
, /* Not defined. */
476 PROP_CONST
, /* Constant. */
477 PROP_ADDR_OFFSET
, /* Address offset. */
478 PROP_LOCEXPR
, /* Location expression. */
479 PROP_LOCLIST
, /* Location list. */
480 PROP_VARIANT_PARTS
, /* Variant parts. */
481 PROP_TYPE
, /* Type. */
484 union dynamic_prop_data
486 /* Storage for constant property. */
490 /* Storage for dynamic property. */
494 /* Storage of variant parts for a type. A type with variant parts
495 has all its fields "linearized" -- stored in a single field
496 array, just as if they had all been declared that way. The
497 variant parts are attached via a dynamic property, and then are
498 used to control which fields end up in the final type during
499 dynamic type resolution. */
501 const gdb::array_view
<variant_part
> *variant_parts
;
503 /* Once a variant type is resolved, we may want to be able to go
504 from the resolved type to the original type. In this case we
505 rewrite the property's kind and set this field. */
507 struct type
*original_type
;
510 /* * Used to store a dynamic property. */
514 /* Determine which field of the union dynamic_prop.data is used. */
515 enum dynamic_prop_kind kind
;
517 /* Storage for dynamic or static value. */
518 union dynamic_prop_data data
;
521 /* Compare two dynamic_prop objects for equality. dynamic_prop
522 instances are equal iff they have the same type and storage. */
523 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
525 /* Compare two dynamic_prop objects for inequality. */
526 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
531 /* * Define a type's dynamic property node kind. */
532 enum dynamic_prop_node_kind
534 /* A property providing a type's data location.
535 Evaluating this field yields to the location of an object's data. */
536 DYN_PROP_DATA_LOCATION
,
538 /* A property representing DW_AT_allocated. The presence of this attribute
539 indicates that the object of the type can be allocated/deallocated. */
542 /* A property representing DW_AT_associated. The presence of this attribute
543 indicated that the object of the type can be associated. */
546 /* A property providing an array's byte stride. */
547 DYN_PROP_BYTE_STRIDE
,
549 /* A property holding variant parts. */
550 DYN_PROP_VARIANT_PARTS
,
552 /* A property holding the size of the type. */
556 /* * List for dynamic type attributes. */
557 struct dynamic_prop_list
559 /* The kind of dynamic prop in this node. */
560 enum dynamic_prop_node_kind prop_kind
;
562 /* The dynamic property itself. */
563 struct dynamic_prop prop
;
565 /* A pointer to the next dynamic property. */
566 struct dynamic_prop_list
*next
;
569 /* * Determine which field of the union main_type.fields[x].loc is
574 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
575 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
576 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
577 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
578 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
581 /* * A discriminant to determine which field in the
582 main_type.type_specific union is being used, if any.
584 For types such as TYPE_CODE_FLT, the use of this
585 discriminant is really redundant, as we know from the type code
586 which field is going to be used. As such, it would be possible to
587 reduce the size of this enum in order to save a bit or two for
588 other fields of struct main_type. But, since we still have extra
589 room , and for the sake of clarity and consistency, we treat all fields
590 of the union the same way. */
592 enum type_specific_kind
595 TYPE_SPECIFIC_CPLUS_STUFF
,
596 TYPE_SPECIFIC_GNAT_STUFF
,
597 TYPE_SPECIFIC_FLOATFORMAT
,
598 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
600 TYPE_SPECIFIC_SELF_TYPE
605 struct objfile
*objfile
;
606 struct gdbarch
*gdbarch
;
611 /* * Position of this field, counting in bits from start of
612 containing structure. For big-endian targets, it is the bit
613 offset to the MSB. For little-endian targets, it is the bit
614 offset to the LSB. */
621 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
622 physaddr is the location (in the target) of the static
623 field. Otherwise, physname is the mangled label of the
627 const char *physname
;
629 /* * The field location can be computed by evaluating the
630 following DWARF block. Its DATA is allocated on
631 objfile_obstack - no CU load is needed to access it. */
633 struct dwarf2_locexpr_baton
*dwarf_block
;
638 union field_location loc
;
640 /* * For a function or member type, this is 1 if the argument is
641 marked artificial. Artificial arguments should not be shown
642 to the user. For TYPE_CODE_RANGE it is set if the specific
643 bound is not defined. */
645 unsigned int artificial
: 1;
647 /* * Discriminant for union field_location. */
649 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
651 /* * Size of this field, in bits, or zero if not packed.
652 If non-zero in an array type, indicates the element size in
653 bits (used only in Ada at the moment).
654 For an unpacked field, the field's type's length
655 says how many bytes the field occupies. */
657 unsigned int bitsize
: 28;
659 /* * In a struct or union type, type of this field.
660 - In a function or member type, type of this argument.
661 - In an array type, the domain-type of the array. */
665 /* * Name of field, value or argument.
666 NULL for range bounds, array domains, and member function
674 /* * Low bound of range. */
676 struct dynamic_prop low
;
678 /* * High bound of range. */
680 struct dynamic_prop high
;
682 /* The stride value for this range. This can be stored in bits or bytes
683 based on the value of BYTE_STRIDE_P. It is optional to have a stride
684 value, if this range has no stride value defined then this will be set
685 to the constant zero. */
687 struct dynamic_prop stride
;
689 /* * The bias. Sometimes a range value is biased before storage.
690 The bias is added to the stored bits to form the true value. */
694 /* True if HIGH range bound contains the number of elements in the
695 subrange. This affects how the final high bound is computed. */
697 unsigned int flag_upper_bound_is_count
: 1;
699 /* True if LOW or/and HIGH are resolved into a static bound from
702 unsigned int flag_bound_evaluated
: 1;
704 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
706 unsigned int flag_is_byte_stride
: 1;
709 /* Compare two range_bounds objects for equality. Simply does
710 memberwise comparison. */
711 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
713 /* Compare two range_bounds objects for inequality. */
714 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
721 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
722 point to cplus_struct_default, a default static instance of a
723 struct cplus_struct_type. */
725 struct cplus_struct_type
*cplus_stuff
;
727 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
728 provides additional information. */
730 struct gnat_aux_type
*gnat_stuff
;
732 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
733 floatformat object that describes the floating-point value
734 that resides within the type. */
736 const struct floatformat
*floatformat
;
738 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
740 struct func_type
*func_stuff
;
742 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
743 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
746 struct type
*self_type
;
749 /* * Main structure representing a type in GDB.
751 This structure is space-critical. Its layout has been tweaked to
752 reduce the space used. */
756 /* * Code for kind of type. */
758 ENUM_BITFIELD(type_code
) code
: 8;
760 /* * Flags about this type. These fields appear at this location
761 because they packs nicely here. See the TYPE_* macros for
762 documentation about these fields. */
764 unsigned int flag_unsigned
: 1;
765 unsigned int flag_nosign
: 1;
766 unsigned int flag_stub
: 1;
767 unsigned int flag_target_stub
: 1;
768 unsigned int flag_prototyped
: 1;
769 unsigned int flag_varargs
: 1;
770 unsigned int flag_vector
: 1;
771 unsigned int flag_stub_supported
: 1;
772 unsigned int flag_gnu_ifunc
: 1;
773 unsigned int flag_fixed_instance
: 1;
774 unsigned int flag_objfile_owned
: 1;
775 unsigned int flag_endianity_not_default
: 1;
777 /* * True if this type was declared with "class" rather than
780 unsigned int flag_declared_class
: 1;
782 /* * True if this is an enum type with disjoint values. This
783 affects how the enum is printed. */
785 unsigned int flag_flag_enum
: 1;
787 /* * A discriminant telling us which field of the type_specific
788 union is being used for this type, if any. */
790 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
792 /* * Number of fields described for this type. This field appears
793 at this location because it packs nicely here. */
797 /* * Name of this type, or NULL if none.
799 This is used for printing only. For looking up a name, look for
800 a symbol in the VAR_DOMAIN. This is generally allocated in the
801 objfile's obstack. However coffread.c uses malloc. */
805 /* * Every type is now associated with a particular objfile, and the
806 type is allocated on the objfile_obstack for that objfile. One
807 problem however, is that there are times when gdb allocates new
808 types while it is not in the process of reading symbols from a
809 particular objfile. Fortunately, these happen when the type
810 being created is a derived type of an existing type, such as in
811 lookup_pointer_type(). So we can just allocate the new type
812 using the same objfile as the existing type, but to do this we
813 need a backpointer to the objfile from the existing type. Yes
814 this is somewhat ugly, but without major overhaul of the internal
815 type system, it can't be avoided for now. */
817 union type_owner owner
;
819 /* * For a pointer type, describes the type of object pointed to.
820 - For an array type, describes the type of the elements.
821 - For a function or method type, describes the type of the return value.
822 - For a range type, describes the type of the full range.
823 - For a complex type, describes the type of each coordinate.
824 - For a special record or union type encoding a dynamic-sized type
825 in GNAT, a memoized pointer to a corresponding static version of
827 - Unused otherwise. */
829 struct type
*target_type
;
831 /* * For structure and union types, a description of each field.
832 For set and pascal array types, there is one "field",
833 whose type is the domain type of the set or array.
834 For range types, there are two "fields",
835 the minimum and maximum values (both inclusive).
836 For enum types, each possible value is described by one "field".
837 For a function or method type, a "field" for each parameter.
838 For C++ classes, there is one field for each base class (if it is
839 a derived class) plus one field for each class data member. Member
840 functions are recorded elsewhere.
842 Using a pointer to a separate array of fields
843 allows all types to have the same size, which is useful
844 because we can allocate the space for a type before
845 we know what to put in it. */
849 struct field
*fields
;
851 /* * Union member used for range types. */
853 struct range_bounds
*bounds
;
855 /* If this is a scalar type, then this is its corresponding
857 struct type
*complex_type
;
861 /* * Slot to point to additional language-specific fields of this
864 union type_specific type_specific
;
866 /* * Contains all dynamic type properties. */
867 struct dynamic_prop_list
*dyn_prop_list
;
870 /* * Number of bits allocated for alignment. */
872 #define TYPE_ALIGN_BITS 8
874 /* * A ``struct type'' describes a particular instance of a type, with
875 some particular qualification. */
879 /* Get the type code of this type.
881 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
882 type, you need to do `check_typedef (type)->code ()`. */
883 type_code
code () const
885 return this->main_type
->code
;
888 /* Set the type code of this type. */
889 void set_code (type_code code
)
891 this->main_type
->code
= code
;
894 /* Get the name of this type. */
895 const char *name () const
897 return this->main_type
->name
;
900 /* Set the name of this type. */
901 void set_name (const char *name
)
903 this->main_type
->name
= name
;
906 /* Get the number of fields of this type. */
907 int num_fields () const
909 return this->main_type
->nfields
;
912 /* Set the number of fields of this type. */
913 void set_num_fields (int num_fields
)
915 this->main_type
->nfields
= num_fields
;
918 /* Get the fields array of this type. */
919 struct field
*fields () const
921 return this->main_type
->flds_bnds
.fields
;
924 /* Get the field at index IDX. */
925 struct field
&field (int idx
) const
927 return this->fields ()[idx
];
930 /* Set the fields array of this type. */
931 void set_fields (struct field
*fields
)
933 this->main_type
->flds_bnds
.fields
= fields
;
936 /* * Return the dynamic property of the requested KIND from this type's
937 list of dynamic properties. */
938 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
940 /* * Given a dynamic property PROP of a given KIND, add this dynamic
941 property to this type.
943 This function assumes that this type is objfile-owned. */
944 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
946 /* * Remove dynamic property of kind KIND from this type, if it exists. */
947 void remove_dyn_prop (dynamic_prop_node_kind kind
);
949 /* * Type that is a pointer to this type.
950 NULL if no such pointer-to type is known yet.
951 The debugger may add the address of such a type
952 if it has to construct one later. */
954 struct type
*pointer_type
;
956 /* * C++: also need a reference type. */
958 struct type
*reference_type
;
960 /* * A C++ rvalue reference type added in C++11. */
962 struct type
*rvalue_reference_type
;
964 /* * Variant chain. This points to a type that differs from this
965 one only in qualifiers and length. Currently, the possible
966 qualifiers are const, volatile, code-space, data-space, and
967 address class. The length may differ only when one of the
968 address class flags are set. The variants are linked in a
969 circular ring and share MAIN_TYPE. */
973 /* * The alignment for this type. Zero means that the alignment was
974 not specified in the debug info. Note that this is stored in a
975 funny way: as the log base 2 (plus 1) of the alignment; so a
976 value of 1 means the alignment is 1, and a value of 9 means the
979 unsigned align_log2
: TYPE_ALIGN_BITS
;
981 /* * Flags specific to this instance of the type, indicating where
984 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
985 binary or-ed with the target type, with a special case for
986 address class and space class. For example if this typedef does
987 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
988 instance flags are completely inherited from the target type. No
989 qualifiers can be cleared by the typedef. See also
991 unsigned instance_flags
: 9;
993 /* * Length of storage for a value of this type. The value is the
994 expression in host bytes of what sizeof(type) would return. This
995 size includes padding. For example, an i386 extended-precision
996 floating point value really only occupies ten bytes, but most
997 ABI's declare its size to be 12 bytes, to preserve alignment.
998 A `struct type' representing such a floating-point type would
999 have a `length' value of 12, even though the last two bytes are
1002 Since this field is expressed in host bytes, its value is appropriate
1003 to pass to memcpy and such (it is assumed that GDB itself always runs
1004 on an 8-bits addressable architecture). However, when using it for
1005 target address arithmetic (e.g. adding it to a target address), the
1006 type_length_units function should be used in order to get the length
1007 expressed in target addressable memory units. */
1011 /* * Core type, shared by a group of qualified types. */
1013 struct main_type
*main_type
;
1016 #define NULL_TYPE ((struct type *) 0)
1021 /* * The overloaded name.
1022 This is generally allocated in the objfile's obstack.
1023 However stabsread.c sometimes uses malloc. */
1027 /* * The number of methods with this name. */
1031 /* * The list of methods. */
1033 struct fn_field
*fn_fields
;
1040 /* * If is_stub is clear, this is the mangled name which we can look
1041 up to find the address of the method (FIXME: it would be cleaner
1042 to have a pointer to the struct symbol here instead).
1044 If is_stub is set, this is the portion of the mangled name which
1045 specifies the arguments. For example, "ii", if there are two int
1046 arguments, or "" if there are no arguments. See gdb_mangle_name
1047 for the conversion from this format to the one used if is_stub is
1050 const char *physname
;
1052 /* * The function type for the method.
1054 (This comment used to say "The return value of the method", but
1055 that's wrong. The function type is expected here, i.e. something
1056 with TYPE_CODE_METHOD, and *not* the return-value type). */
1060 /* * For virtual functions. First baseclass that defines this
1061 virtual function. */
1063 struct type
*fcontext
;
1067 unsigned int is_const
:1;
1068 unsigned int is_volatile
:1;
1069 unsigned int is_private
:1;
1070 unsigned int is_protected
:1;
1071 unsigned int is_artificial
:1;
1073 /* * A stub method only has some fields valid (but they are enough
1074 to reconstruct the rest of the fields). */
1076 unsigned int is_stub
:1;
1078 /* * True if this function is a constructor, false otherwise. */
1080 unsigned int is_constructor
: 1;
1082 /* * True if this function is deleted, false otherwise. */
1084 unsigned int is_deleted
: 1;
1086 /* * DW_AT_defaulted attribute for this function. The value is one
1087 of the DW_DEFAULTED constants. */
1089 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1093 unsigned int dummy
:6;
1095 /* * Index into that baseclass's virtual function table, minus 2;
1096 else if static: VOFFSET_STATIC; else: 0. */
1098 unsigned int voffset
:16;
1100 #define VOFFSET_STATIC 1
1106 /* * Unqualified name to be prefixed by owning class qualified
1111 /* * Type this typedef named NAME represents. */
1115 /* * True if this field was declared protected, false otherwise. */
1116 unsigned int is_protected
: 1;
1118 /* * True if this field was declared private, false otherwise. */
1119 unsigned int is_private
: 1;
1122 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1123 TYPE_CODE_UNION nodes. */
1125 struct cplus_struct_type
1127 /* * Number of base classes this type derives from. The
1128 baseclasses are stored in the first N_BASECLASSES fields
1129 (i.e. the `fields' field of the struct type). The only fields
1130 of struct field that are used are: type, name, loc.bitpos. */
1132 short n_baseclasses
;
1134 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1135 All access to this field must be through TYPE_VPTR_FIELDNO as one
1136 thing it does is check whether the field has been initialized.
1137 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1138 which for portability reasons doesn't initialize this field.
1139 TYPE_VPTR_FIELDNO returns -1 for this case.
1141 If -1, we were unable to find the virtual function table pointer in
1142 initial symbol reading, and get_vptr_fieldno should be called to find
1143 it if possible. get_vptr_fieldno will update this field if possible.
1144 Otherwise the value is left at -1.
1146 Unused if this type does not have virtual functions. */
1150 /* * Number of methods with unique names. All overloaded methods
1151 with the same name count only once. */
1155 /* * Number of template arguments. */
1157 unsigned short n_template_arguments
;
1159 /* * One if this struct is a dynamic class, as defined by the
1160 Itanium C++ ABI: if it requires a virtual table pointer,
1161 because it or any of its base classes have one or more virtual
1162 member functions or virtual base classes. Minus one if not
1163 dynamic. Zero if not yet computed. */
1167 /* * The calling convention for this type, fetched from the
1168 DW_AT_calling_convention attribute. The value is one of the
1171 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1173 /* * The base class which defined the virtual function table pointer. */
1175 struct type
*vptr_basetype
;
1177 /* * For derived classes, the number of base classes is given by
1178 n_baseclasses and virtual_field_bits is a bit vector containing
1179 one bit per base class. If the base class is virtual, the
1180 corresponding bit will be set.
1185 class C : public B, public virtual A {};
1187 B is a baseclass of C; A is a virtual baseclass for C.
1188 This is a C++ 2.0 language feature. */
1190 B_TYPE
*virtual_field_bits
;
1192 /* * For classes with private fields, the number of fields is
1193 given by nfields and private_field_bits is a bit vector
1194 containing one bit per field.
1196 If the field is private, the corresponding bit will be set. */
1198 B_TYPE
*private_field_bits
;
1200 /* * For classes with protected fields, the number of fields is
1201 given by nfields and protected_field_bits is a bit vector
1202 containing one bit per field.
1204 If the field is private, the corresponding bit will be set. */
1206 B_TYPE
*protected_field_bits
;
1208 /* * For classes with fields to be ignored, either this is
1209 optimized out or this field has length 0. */
1211 B_TYPE
*ignore_field_bits
;
1213 /* * For classes, structures, and unions, a description of each
1214 field, which consists of an overloaded name, followed by the
1215 types of arguments that the method expects, and then the name
1216 after it has been renamed to make it distinct.
1218 fn_fieldlists points to an array of nfn_fields of these. */
1220 struct fn_fieldlist
*fn_fieldlists
;
1222 /* * typedefs defined inside this class. typedef_field points to
1223 an array of typedef_field_count elements. */
1225 struct decl_field
*typedef_field
;
1227 unsigned typedef_field_count
;
1229 /* * The nested types defined by this type. nested_types points to
1230 an array of nested_types_count elements. */
1232 struct decl_field
*nested_types
;
1234 unsigned nested_types_count
;
1236 /* * The template arguments. This is an array with
1237 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1240 struct symbol
**template_arguments
;
1243 /* * Struct used to store conversion rankings. */
1249 /* * When two conversions are of the same type and therefore have
1250 the same rank, subrank is used to differentiate the two.
1252 Eg: Two derived-class-pointer to base-class-pointer conversions
1253 would both have base pointer conversion rank, but the
1254 conversion with the shorter distance to the ancestor is
1255 preferable. 'subrank' would be used to reflect that. */
1260 /* * Used for ranking a function for overload resolution. */
1262 typedef std::vector
<rank
> badness_vector
;
1264 /* * GNAT Ada-specific information for various Ada types. */
1266 struct gnat_aux_type
1268 /* * Parallel type used to encode information about dynamic types
1269 used in Ada (such as variant records, variable-size array,
1271 struct type
* descriptive_type
;
1274 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1278 /* * The calling convention for targets supporting multiple ABIs.
1279 Right now this is only fetched from the Dwarf-2
1280 DW_AT_calling_convention attribute. The value is one of the
1283 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1285 /* * Whether this function normally returns to its caller. It is
1286 set from the DW_AT_noreturn attribute if set on the
1287 DW_TAG_subprogram. */
1289 unsigned int is_noreturn
: 1;
1291 /* * Only those DW_TAG_call_site's in this function that have
1292 DW_AT_call_tail_call set are linked in this list. Function
1293 without its tail call list complete
1294 (DW_AT_call_all_tail_calls or its superset
1295 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1296 DW_TAG_call_site's exist in such function. */
1298 struct call_site
*tail_call_list
;
1300 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1301 contains the method. */
1303 struct type
*self_type
;
1306 /* struct call_site_parameter can be referenced in callees by several ways. */
1308 enum call_site_parameter_kind
1310 /* * Use field call_site_parameter.u.dwarf_reg. */
1311 CALL_SITE_PARAMETER_DWARF_REG
,
1313 /* * Use field call_site_parameter.u.fb_offset. */
1314 CALL_SITE_PARAMETER_FB_OFFSET
,
1316 /* * Use field call_site_parameter.u.param_offset. */
1317 CALL_SITE_PARAMETER_PARAM_OFFSET
1320 struct call_site_target
1322 union field_location loc
;
1324 /* * Discriminant for union field_location. */
1326 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1329 union call_site_parameter_u
1331 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1332 as DWARF register number, for register passed
1337 /* * Offset from the callee's frame base, for stack passed
1338 parameters. This equals offset from the caller's stack
1341 CORE_ADDR fb_offset
;
1343 /* * Offset relative to the start of this PER_CU to
1344 DW_TAG_formal_parameter which is referenced by both
1345 caller and the callee. */
1347 cu_offset param_cu_off
;
1350 struct call_site_parameter
1352 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1354 union call_site_parameter_u u
;
1356 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1358 const gdb_byte
*value
;
1361 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1362 It may be NULL if not provided by DWARF. */
1364 const gdb_byte
*data_value
;
1365 size_t data_value_size
;
1368 /* * A place where a function gets called from, represented by
1369 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1373 /* * Address of the first instruction after this call. It must be
1374 the first field as we overload core_addr_hash and core_addr_eq
1379 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1381 struct call_site
*tail_call_next
;
1383 /* * Describe DW_AT_call_target. Missing attribute uses
1384 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1386 struct call_site_target target
;
1388 /* * Size of the PARAMETER array. */
1390 unsigned parameter_count
;
1392 /* * CU of the function where the call is located. It gets used
1393 for DWARF blocks execution in the parameter array below. */
1395 dwarf2_per_cu_data
*per_cu
;
1397 /* objfile of the function where the call is located. */
1399 dwarf2_per_objfile
*per_objfile
;
1401 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1403 struct call_site_parameter parameter
[1];
1406 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1407 static structure. */
1409 extern const struct cplus_struct_type cplus_struct_default
;
1411 extern void allocate_cplus_struct_type (struct type
*);
1413 #define INIT_CPLUS_SPECIFIC(type) \
1414 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1415 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1416 &cplus_struct_default)
1418 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1420 #define HAVE_CPLUS_STRUCT(type) \
1421 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1422 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1424 #define INIT_NONE_SPECIFIC(type) \
1425 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1426 TYPE_MAIN_TYPE (type)->type_specific = {})
1428 extern const struct gnat_aux_type gnat_aux_default
;
1430 extern void allocate_gnat_aux_type (struct type
*);
1432 #define INIT_GNAT_SPECIFIC(type) \
1433 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1434 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1435 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1436 /* * A macro that returns non-zero if the type-specific data should be
1437 read as "gnat-stuff". */
1438 #define HAVE_GNAT_AUX_INFO(type) \
1439 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1441 /* * True if TYPE is known to be an Ada type of some kind. */
1442 #define ADA_TYPE_P(type) \
1443 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1444 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1445 && TYPE_FIXED_INSTANCE (type)))
1447 #define INIT_FUNC_SPECIFIC(type) \
1448 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1449 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1450 TYPE_ZALLOC (type, \
1451 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1453 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1454 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1455 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1456 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1457 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1458 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1459 #define TYPE_CHAIN(thistype) (thistype)->chain
1460 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1461 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1462 so you only have to call check_typedef once. Since allocate_value
1463 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1464 #define TYPE_LENGTH(thistype) (thistype)->length
1466 /* * Return the alignment of the type in target addressable memory
1467 units, or 0 if no alignment was specified. */
1468 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1470 /* * Return the alignment of the type in target addressable memory
1471 units, or 0 if no alignment was specified. */
1472 extern unsigned type_raw_align (struct type
*);
1474 /* * Return the alignment of the type in target addressable memory
1475 units. Return 0 if the alignment cannot be determined; but note
1476 that this makes an effort to compute the alignment even it it was
1477 not specified in the debug info. */
1478 extern unsigned type_align (struct type
*);
1480 /* * Set the alignment of the type. The alignment must be a power of
1481 2. Returns false if the given value does not fit in the available
1482 space in struct type. */
1483 extern bool set_type_align (struct type
*, ULONGEST
);
1485 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1486 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1487 #define TYPE_LOW_BOUND(range_type) \
1488 TYPE_RANGE_DATA(range_type)->low.data.const_val
1489 #define TYPE_HIGH_BOUND(range_type) \
1490 TYPE_RANGE_DATA(range_type)->high.data.const_val
1491 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1492 (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
1493 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1494 (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
1495 #define TYPE_HIGH_BOUND_KIND(range_type) \
1496 TYPE_RANGE_DATA(range_type)->high.kind
1497 #define TYPE_LOW_BOUND_KIND(range_type) \
1498 TYPE_RANGE_DATA(range_type)->low.kind
1499 #define TYPE_BIT_STRIDE(range_type) \
1500 (TYPE_RANGE_DATA(range_type)->stride.data.const_val \
1501 * (TYPE_RANGE_DATA(range_type)->flag_is_byte_stride ? 8 : 1))
1503 /* Property accessors for the type data location. */
1504 #define TYPE_DATA_LOCATION(thistype) \
1505 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1506 #define TYPE_DATA_LOCATION_BATON(thistype) \
1507 TYPE_DATA_LOCATION (thistype)->data.baton
1508 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1509 TYPE_DATA_LOCATION (thistype)->data.const_val
1510 #define TYPE_DATA_LOCATION_KIND(thistype) \
1511 TYPE_DATA_LOCATION (thistype)->kind
1512 #define TYPE_DYNAMIC_LENGTH(thistype) \
1513 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1515 /* Property accessors for the type allocated/associated. */
1516 #define TYPE_ALLOCATED_PROP(thistype) \
1517 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1518 #define TYPE_ASSOCIATED_PROP(thistype) \
1519 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1521 /* Attribute accessors for dynamic properties. */
1522 #define TYPE_DYN_PROP_BATON(dynprop) \
1524 #define TYPE_DYN_PROP_ADDR(dynprop) \
1525 dynprop->data.const_val
1526 #define TYPE_DYN_PROP_KIND(dynprop) \
1530 /* Accessors for struct range_bounds data attached to an array type's
1533 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1534 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1535 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1536 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1538 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1539 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1541 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1542 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1544 #define TYPE_ARRAY_BIT_STRIDE(arraytype) \
1545 (TYPE_BIT_STRIDE(TYPE_INDEX_TYPE((arraytype))))
1549 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1550 /* Do not call this, use TYPE_SELF_TYPE. */
1551 extern struct type
*internal_type_self_type (struct type
*);
1552 extern void set_type_self_type (struct type
*, struct type
*);
1554 extern int internal_type_vptr_fieldno (struct type
*);
1555 extern void set_type_vptr_fieldno (struct type
*, int);
1556 extern struct type
*internal_type_vptr_basetype (struct type
*);
1557 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1558 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1559 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1561 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1562 #define TYPE_SPECIFIC_FIELD(thistype) \
1563 TYPE_MAIN_TYPE(thistype)->type_specific_field
1564 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1565 where we're trying to print an Ada array using the C language.
1566 In that case, there is no "cplus_stuff", but the C language assumes
1567 that there is. What we do, in that case, is pretend that there is
1568 an implicit one which is the default cplus stuff. */
1569 #define TYPE_CPLUS_SPECIFIC(thistype) \
1570 (!HAVE_CPLUS_STRUCT(thistype) \
1571 ? (struct cplus_struct_type*)&cplus_struct_default \
1572 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1573 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1574 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1575 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1576 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1577 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1578 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1579 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1580 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1581 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1582 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1583 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1584 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1585 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1586 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1587 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1588 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1590 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1591 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1592 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1594 #define FIELD_TYPE(thisfld) ((thisfld).type)
1595 #define FIELD_NAME(thisfld) ((thisfld).name)
1596 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1597 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1598 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1599 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1600 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1601 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1602 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1603 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1604 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1605 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1606 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1607 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1608 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1609 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1610 #define SET_FIELD_PHYSNAME(thisfld, name) \
1611 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1612 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1613 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1614 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1615 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1616 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1617 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1618 FIELD_DWARF_BLOCK (thisfld) = (addr))
1619 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1620 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1622 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE((thistype)->field (n))
1623 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1624 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1625 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1626 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1627 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1628 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1629 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1630 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1631 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1632 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1634 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1635 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1636 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1637 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1638 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1639 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1640 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1641 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1642 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1643 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1644 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1645 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1646 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1647 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1648 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1649 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1650 #define TYPE_FIELD_PRIVATE(thistype, n) \
1651 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1652 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1653 #define TYPE_FIELD_PROTECTED(thistype, n) \
1654 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1655 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1656 #define TYPE_FIELD_IGNORE(thistype, n) \
1657 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1658 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1659 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1660 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1661 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1663 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1664 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1665 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1666 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1667 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1669 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1670 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1671 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1672 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1673 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1674 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1676 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1677 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1678 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1679 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1680 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1681 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1682 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1683 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1684 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1685 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1686 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1687 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1688 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1689 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1690 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1691 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1692 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1694 /* Accessors for typedefs defined by a class. */
1695 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1696 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1697 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1698 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1699 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1700 TYPE_TYPEDEF_FIELD (thistype, n).name
1701 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1702 TYPE_TYPEDEF_FIELD (thistype, n).type
1703 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1704 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1705 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1706 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1707 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1708 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1710 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1711 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1712 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1713 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1714 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1715 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1716 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1717 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1718 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1719 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1720 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1721 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1722 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1723 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1725 #define TYPE_IS_OPAQUE(thistype) \
1726 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1727 || ((thistype)->code () == TYPE_CODE_UNION)) \
1728 && ((thistype)->num_fields () == 0) \
1729 && (!HAVE_CPLUS_STRUCT (thistype) \
1730 || TYPE_NFN_FIELDS (thistype) == 0) \
1731 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1733 /* * A helper macro that returns the name of a type or "unnamed type"
1734 if the type has no name. */
1736 #define TYPE_SAFE_NAME(type) \
1737 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1739 /* * A helper macro that returns the name of an error type. If the
1740 type has a name, it is used; otherwise, a default is used. */
1742 #define TYPE_ERROR_NAME(type) \
1743 (type->name () ? type->name () : _("<error type>"))
1745 /* Given TYPE, return its floatformat. */
1746 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1750 /* Integral types. */
1752 /* Implicit size/sign (based on the architecture's ABI). */
1753 struct type
*builtin_void
;
1754 struct type
*builtin_char
;
1755 struct type
*builtin_short
;
1756 struct type
*builtin_int
;
1757 struct type
*builtin_long
;
1758 struct type
*builtin_signed_char
;
1759 struct type
*builtin_unsigned_char
;
1760 struct type
*builtin_unsigned_short
;
1761 struct type
*builtin_unsigned_int
;
1762 struct type
*builtin_unsigned_long
;
1763 struct type
*builtin_half
;
1764 struct type
*builtin_float
;
1765 struct type
*builtin_double
;
1766 struct type
*builtin_long_double
;
1767 struct type
*builtin_complex
;
1768 struct type
*builtin_double_complex
;
1769 struct type
*builtin_string
;
1770 struct type
*builtin_bool
;
1771 struct type
*builtin_long_long
;
1772 struct type
*builtin_unsigned_long_long
;
1773 struct type
*builtin_decfloat
;
1774 struct type
*builtin_decdouble
;
1775 struct type
*builtin_declong
;
1777 /* "True" character types.
1778 We use these for the '/c' print format, because c_char is just a
1779 one-byte integral type, which languages less laid back than C
1780 will print as ... well, a one-byte integral type. */
1781 struct type
*builtin_true_char
;
1782 struct type
*builtin_true_unsigned_char
;
1784 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1785 is for when an architecture needs to describe a register that has
1787 struct type
*builtin_int0
;
1788 struct type
*builtin_int8
;
1789 struct type
*builtin_uint8
;
1790 struct type
*builtin_int16
;
1791 struct type
*builtin_uint16
;
1792 struct type
*builtin_int24
;
1793 struct type
*builtin_uint24
;
1794 struct type
*builtin_int32
;
1795 struct type
*builtin_uint32
;
1796 struct type
*builtin_int64
;
1797 struct type
*builtin_uint64
;
1798 struct type
*builtin_int128
;
1799 struct type
*builtin_uint128
;
1801 /* Wide character types. */
1802 struct type
*builtin_char16
;
1803 struct type
*builtin_char32
;
1804 struct type
*builtin_wchar
;
1806 /* Pointer types. */
1808 /* * `pointer to data' type. Some target platforms use an implicitly
1809 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1810 struct type
*builtin_data_ptr
;
1812 /* * `pointer to function (returning void)' type. Harvard
1813 architectures mean that ABI function and code pointers are not
1814 interconvertible. Similarly, since ANSI, C standards have
1815 explicitly said that pointers to functions and pointers to data
1816 are not interconvertible --- that is, you can't cast a function
1817 pointer to void * and back, and expect to get the same value.
1818 However, all function pointer types are interconvertible, so void
1819 (*) () can server as a generic function pointer. */
1821 struct type
*builtin_func_ptr
;
1823 /* * `function returning pointer to function (returning void)' type.
1824 The final void return type is not significant for it. */
1826 struct type
*builtin_func_func
;
1828 /* Special-purpose types. */
1830 /* * This type is used to represent a GDB internal function. */
1832 struct type
*internal_fn
;
1834 /* * This type is used to represent an xmethod. */
1835 struct type
*xmethod
;
1838 /* * Return the type table for the specified architecture. */
1840 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1842 /* * Per-objfile types used by symbol readers. */
1846 /* Basic types based on the objfile architecture. */
1847 struct type
*builtin_void
;
1848 struct type
*builtin_char
;
1849 struct type
*builtin_short
;
1850 struct type
*builtin_int
;
1851 struct type
*builtin_long
;
1852 struct type
*builtin_long_long
;
1853 struct type
*builtin_signed_char
;
1854 struct type
*builtin_unsigned_char
;
1855 struct type
*builtin_unsigned_short
;
1856 struct type
*builtin_unsigned_int
;
1857 struct type
*builtin_unsigned_long
;
1858 struct type
*builtin_unsigned_long_long
;
1859 struct type
*builtin_half
;
1860 struct type
*builtin_float
;
1861 struct type
*builtin_double
;
1862 struct type
*builtin_long_double
;
1864 /* * This type is used to represent symbol addresses. */
1865 struct type
*builtin_core_addr
;
1867 /* * This type represents a type that was unrecognized in symbol
1869 struct type
*builtin_error
;
1871 /* * Types used for symbols with no debug information. */
1872 struct type
*nodebug_text_symbol
;
1873 struct type
*nodebug_text_gnu_ifunc_symbol
;
1874 struct type
*nodebug_got_plt_symbol
;
1875 struct type
*nodebug_data_symbol
;
1876 struct type
*nodebug_unknown_symbol
;
1877 struct type
*nodebug_tls_symbol
;
1880 /* * Return the type table for the specified objfile. */
1882 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1884 /* Explicit floating-point formats. See "floatformat.h". */
1885 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1886 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1887 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1888 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1889 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1890 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1891 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1892 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1893 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1894 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1895 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1896 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1899 /* Allocate space for storing data associated with a particular
1900 type. We ensure that the space is allocated using the same
1901 mechanism that was used to allocate the space for the type
1902 structure itself. I.e. if the type is on an objfile's
1903 objfile_obstack, then the space for data associated with that type
1904 will also be allocated on the objfile_obstack. If the type is
1905 associated with a gdbarch, then the space for data associated with that
1906 type will also be allocated on the gdbarch_obstack.
1908 If a type is not associated with neither an objfile or a gdbarch then
1909 you should not use this macro to allocate space for data, instead you
1910 should call xmalloc directly, and ensure the memory is correctly freed
1911 when it is no longer needed. */
1913 #define TYPE_ALLOC(t,size) \
1914 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
1915 ? &TYPE_OBJFILE (t)->objfile_obstack \
1916 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
1920 /* See comment on TYPE_ALLOC. */
1922 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
1924 /* Use alloc_type to allocate a type owned by an objfile. Use
1925 alloc_type_arch to allocate a type owned by an architecture. Use
1926 alloc_type_copy to allocate a type with the same owner as a
1927 pre-existing template type, no matter whether objfile or
1929 extern struct type
*alloc_type (struct objfile
*);
1930 extern struct type
*alloc_type_arch (struct gdbarch
*);
1931 extern struct type
*alloc_type_copy (const struct type
*);
1933 /* * Return the type's architecture. For types owned by an
1934 architecture, that architecture is returned. For types owned by an
1935 objfile, that objfile's architecture is returned. */
1937 extern struct gdbarch
*get_type_arch (const struct type
*);
1939 /* * This returns the target type (or NULL) of TYPE, also skipping
1942 extern struct type
*get_target_type (struct type
*type
);
1944 /* Return the equivalent of TYPE_LENGTH, but in number of target
1945 addressable memory units of the associated gdbarch instead of bytes. */
1947 extern unsigned int type_length_units (struct type
*type
);
1949 /* * Helper function to construct objfile-owned types. */
1951 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
1953 extern struct type
*init_integer_type (struct objfile
*, int, int,
1955 extern struct type
*init_character_type (struct objfile
*, int, int,
1957 extern struct type
*init_boolean_type (struct objfile
*, int, int,
1959 extern struct type
*init_float_type (struct objfile
*, int, const char *,
1960 const struct floatformat
**,
1961 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
1962 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
1963 extern struct type
*init_complex_type (const char *, struct type
*);
1964 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
1967 /* Helper functions to construct architecture-owned types. */
1968 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
1970 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
1972 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
1974 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
1976 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
1977 const struct floatformat
**);
1978 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
1979 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
1982 /* Helper functions to construct a struct or record type. An
1983 initially empty type is created using arch_composite_type().
1984 Fields are then added using append_composite_type_field*(). A union
1985 type has its size set to the largest field. A struct type has each
1986 field packed against the previous. */
1988 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1989 const char *name
, enum type_code code
);
1990 extern void append_composite_type_field (struct type
*t
, const char *name
,
1991 struct type
*field
);
1992 extern void append_composite_type_field_aligned (struct type
*t
,
1996 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
1997 struct type
*field
);
1999 /* Helper functions to construct a bit flags type. An initially empty
2000 type is created using arch_flag_type(). Flags are then added using
2001 append_flag_type_field() and append_flag_type_flag(). */
2002 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2003 const char *name
, int bit
);
2004 extern void append_flags_type_field (struct type
*type
,
2005 int start_bitpos
, int nr_bits
,
2006 struct type
*field_type
, const char *name
);
2007 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2010 extern void make_vector_type (struct type
*array_type
);
2011 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2013 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2014 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2015 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2018 extern struct type
*make_reference_type (struct type
*, struct type
**,
2021 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2023 extern struct type
*make_restrict_type (struct type
*);
2025 extern struct type
*make_unqualified_type (struct type
*);
2027 extern struct type
*make_atomic_type (struct type
*);
2029 extern void replace_type (struct type
*, struct type
*);
2031 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2033 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2035 extern struct type
*make_type_with_address_space (struct type
*type
,
2036 int space_identifier
);
2038 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2040 extern struct type
*lookup_methodptr_type (struct type
*);
2042 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2043 struct type
*to_type
, struct field
*args
,
2044 int nargs
, int varargs
);
2046 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2049 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2051 extern struct type
*allocate_stub_method (struct type
*);
2053 extern const char *type_name_or_error (struct type
*type
);
2057 /* The field of the element, or NULL if no element was found. */
2058 struct field
*field
;
2060 /* The bit offset of the element in the parent structure. */
2064 /* Given a type TYPE, lookup the field and offset of the component named
2067 TYPE can be either a struct or union, or a pointer or reference to
2068 a struct or union. If it is a pointer or reference, its target
2069 type is automatically used. Thus '.' and '->' are interchangable,
2070 as specified for the definitions of the expression element types
2071 STRUCTOP_STRUCT and STRUCTOP_PTR.
2073 If NOERR is nonzero, the returned structure will have field set to
2074 NULL if there is no component named NAME.
2076 If the component NAME is a field in an anonymous substructure of
2077 TYPE, the returned offset is a "global" offset relative to TYPE
2078 rather than an offset within the substructure. */
2080 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2082 /* Given a type TYPE, lookup the type of the component named NAME.
2084 TYPE can be either a struct or union, or a pointer or reference to
2085 a struct or union. If it is a pointer or reference, its target
2086 type is automatically used. Thus '.' and '->' are interchangable,
2087 as specified for the definitions of the expression element types
2088 STRUCTOP_STRUCT and STRUCTOP_PTR.
2090 If NOERR is nonzero, return NULL if there is no component named
2093 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2095 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2097 extern struct type
*lookup_pointer_type (struct type
*);
2099 extern struct type
*make_function_type (struct type
*, struct type
**);
2101 extern struct type
*lookup_function_type (struct type
*);
2103 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2107 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2111 extern struct type
*create_array_type_with_stride
2112 (struct type
*, struct type
*, struct type
*,
2113 struct dynamic_prop
*, unsigned int);
2115 extern struct type
*create_range_type (struct type
*, struct type
*,
2116 const struct dynamic_prop
*,
2117 const struct dynamic_prop
*,
2120 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2121 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2124 extern struct type
* create_range_type_with_stride
2125 (struct type
*result_type
, struct type
*index_type
,
2126 const struct dynamic_prop
*low_bound
,
2127 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2128 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2130 extern struct type
*create_array_type (struct type
*, struct type
*,
2133 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2135 extern struct type
*create_string_type (struct type
*, struct type
*,
2137 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2139 extern struct type
*create_set_type (struct type
*, struct type
*);
2141 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2144 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2147 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2149 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2151 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2152 ADDR specifies the location of the variable the type is bound to.
2153 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2154 static properties is returned. */
2155 extern struct type
*resolve_dynamic_type
2156 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2159 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2160 extern int is_dynamic_type (struct type
*type
);
2162 extern struct type
*check_typedef (struct type
*);
2164 extern void check_stub_method_group (struct type
*, int);
2166 extern char *gdb_mangle_name (struct type
*, int, int);
2168 extern struct type
*lookup_typename (const struct language_defn
*,
2169 const char *, const struct block
*, int);
2171 extern struct type
*lookup_template_type (const char *, struct type
*,
2172 const struct block
*);
2174 extern int get_vptr_fieldno (struct type
*, struct type
**);
2176 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2178 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2179 LONGEST
*high_bound
);
2181 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2183 extern int class_types_same_p (const struct type
*, const struct type
*);
2185 extern int is_ancestor (struct type
*, struct type
*);
2187 extern int is_public_ancestor (struct type
*, struct type
*);
2189 extern int is_unique_ancestor (struct type
*, struct value
*);
2191 /* Overload resolution */
2193 /* * Badness if parameter list length doesn't match arg list length. */
2194 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2196 /* * Dummy badness value for nonexistent parameter positions. */
2197 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2198 /* * Badness if no conversion among types. */
2199 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2201 /* * Badness of an exact match. */
2202 extern const struct rank EXACT_MATCH_BADNESS
;
2204 /* * Badness of integral promotion. */
2205 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2206 /* * Badness of floating promotion. */
2207 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2208 /* * Badness of converting a derived class pointer
2209 to a base class pointer. */
2210 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2211 /* * Badness of integral conversion. */
2212 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2213 /* * Badness of floating conversion. */
2214 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2215 /* * Badness of integer<->floating conversions. */
2216 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2217 /* * Badness of conversion of pointer to void pointer. */
2218 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2219 /* * Badness of conversion to boolean. */
2220 extern const struct rank BOOL_CONVERSION_BADNESS
;
2221 /* * Badness of converting derived to base class. */
2222 extern const struct rank BASE_CONVERSION_BADNESS
;
2223 /* * Badness of converting from non-reference to reference. Subrank
2224 is the type of reference conversion being done. */
2225 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2226 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2227 /* * Conversion to rvalue reference. */
2228 #define REFERENCE_CONVERSION_RVALUE 1
2229 /* * Conversion to const lvalue reference. */
2230 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2232 /* * Badness of converting integer 0 to NULL pointer. */
2233 extern const struct rank NULL_POINTER_CONVERSION
;
2234 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2236 extern const struct rank CV_CONVERSION_BADNESS
;
2237 #define CV_CONVERSION_CONST 1
2238 #define CV_CONVERSION_VOLATILE 2
2240 /* Non-standard conversions allowed by the debugger */
2242 /* * Converting a pointer to an int is usually OK. */
2243 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2245 /* * Badness of converting a (non-zero) integer constant
2247 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2249 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2250 extern int compare_ranks (struct rank a
, struct rank b
);
2252 extern int compare_badness (const badness_vector
&,
2253 const badness_vector
&);
2255 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2256 gdb::array_view
<value
*> args
);
2258 extern struct rank
rank_one_type (struct type
*, struct type
*,
2261 extern void recursive_dump_type (struct type
*, int);
2263 extern int field_is_static (struct field
*);
2267 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2268 const struct value_print_options
*,
2269 int, struct ui_file
*);
2271 extern int can_dereference (struct type
*);
2273 extern int is_integral_type (struct type
*);
2275 extern int is_floating_type (struct type
*);
2277 extern int is_scalar_type (struct type
*type
);
2279 extern int is_scalar_type_recursive (struct type
*);
2281 extern int class_or_union_p (const struct type
*);
2283 extern void maintenance_print_type (const char *, int);
2285 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2287 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2289 htab_t copied_types
);
2291 extern struct type
*copy_type (const struct type
*type
);
2293 extern bool types_equal (struct type
*, struct type
*);
2295 extern bool types_deeply_equal (struct type
*, struct type
*);
2297 extern int type_not_allocated (const struct type
*type
);
2299 extern int type_not_associated (const struct type
*type
);
2301 /* * When the type includes explicit byte ordering, return that.
2302 Otherwise, the byte ordering from gdbarch_byte_order for
2303 get_type_arch is returned. */
2305 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2307 /* A flag to enable printing of debugging information of C++
2310 extern unsigned int overload_debug
;
2312 #endif /* GDBTYPES_H */