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 struct type
*type () const
643 void set_type (struct type
*type
)
648 union field_location loc
;
650 /* * For a function or member type, this is 1 if the argument is
651 marked artificial. Artificial arguments should not be shown
652 to the user. For TYPE_CODE_RANGE it is set if the specific
653 bound is not defined. */
655 unsigned int artificial
: 1;
657 /* * Discriminant for union field_location. */
659 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
661 /* * Size of this field, in bits, or zero if not packed.
662 If non-zero in an array type, indicates the element size in
663 bits (used only in Ada at the moment).
664 For an unpacked field, the field's type's length
665 says how many bytes the field occupies. */
667 unsigned int bitsize
: 28;
669 /* * In a struct or union type, type of this field.
670 - In a function or member type, type of this argument.
671 - In an array type, the domain-type of the array. */
675 /* * Name of field, value or argument.
676 NULL for range bounds, array domains, and member function
684 /* * Low bound of range. */
686 struct dynamic_prop low
;
688 /* * High bound of range. */
690 struct dynamic_prop high
;
692 /* The stride value for this range. This can be stored in bits or bytes
693 based on the value of BYTE_STRIDE_P. It is optional to have a stride
694 value, if this range has no stride value defined then this will be set
695 to the constant zero. */
697 struct dynamic_prop stride
;
699 /* * The bias. Sometimes a range value is biased before storage.
700 The bias is added to the stored bits to form the true value. */
704 /* True if HIGH range bound contains the number of elements in the
705 subrange. This affects how the final high bound is computed. */
707 unsigned int flag_upper_bound_is_count
: 1;
709 /* True if LOW or/and HIGH are resolved into a static bound from
712 unsigned int flag_bound_evaluated
: 1;
714 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
716 unsigned int flag_is_byte_stride
: 1;
719 /* Compare two range_bounds objects for equality. Simply does
720 memberwise comparison. */
721 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
723 /* Compare two range_bounds objects for inequality. */
724 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
731 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
732 point to cplus_struct_default, a default static instance of a
733 struct cplus_struct_type. */
735 struct cplus_struct_type
*cplus_stuff
;
737 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
738 provides additional information. */
740 struct gnat_aux_type
*gnat_stuff
;
742 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
743 floatformat object that describes the floating-point value
744 that resides within the type. */
746 const struct floatformat
*floatformat
;
748 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
750 struct func_type
*func_stuff
;
752 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
753 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
756 struct type
*self_type
;
759 /* * Main structure representing a type in GDB.
761 This structure is space-critical. Its layout has been tweaked to
762 reduce the space used. */
766 /* * Code for kind of type. */
768 ENUM_BITFIELD(type_code
) code
: 8;
770 /* * Flags about this type. These fields appear at this location
771 because they packs nicely here. See the TYPE_* macros for
772 documentation about these fields. */
774 unsigned int flag_unsigned
: 1;
775 unsigned int flag_nosign
: 1;
776 unsigned int flag_stub
: 1;
777 unsigned int flag_target_stub
: 1;
778 unsigned int flag_prototyped
: 1;
779 unsigned int flag_varargs
: 1;
780 unsigned int flag_vector
: 1;
781 unsigned int flag_stub_supported
: 1;
782 unsigned int flag_gnu_ifunc
: 1;
783 unsigned int flag_fixed_instance
: 1;
784 unsigned int flag_objfile_owned
: 1;
785 unsigned int flag_endianity_not_default
: 1;
787 /* * True if this type was declared with "class" rather than
790 unsigned int flag_declared_class
: 1;
792 /* * True if this is an enum type with disjoint values. This
793 affects how the enum is printed. */
795 unsigned int flag_flag_enum
: 1;
797 /* * A discriminant telling us which field of the type_specific
798 union is being used for this type, if any. */
800 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
802 /* * Number of fields described for this type. This field appears
803 at this location because it packs nicely here. */
807 /* * Name of this type, or NULL if none.
809 This is used for printing only. For looking up a name, look for
810 a symbol in the VAR_DOMAIN. This is generally allocated in the
811 objfile's obstack. However coffread.c uses malloc. */
815 /* * Every type is now associated with a particular objfile, and the
816 type is allocated on the objfile_obstack for that objfile. One
817 problem however, is that there are times when gdb allocates new
818 types while it is not in the process of reading symbols from a
819 particular objfile. Fortunately, these happen when the type
820 being created is a derived type of an existing type, such as in
821 lookup_pointer_type(). So we can just allocate the new type
822 using the same objfile as the existing type, but to do this we
823 need a backpointer to the objfile from the existing type. Yes
824 this is somewhat ugly, but without major overhaul of the internal
825 type system, it can't be avoided for now. */
827 union type_owner owner
;
829 /* * For a pointer type, describes the type of object pointed to.
830 - For an array type, describes the type of the elements.
831 - For a function or method type, describes the type of the return value.
832 - For a range type, describes the type of the full range.
833 - For a complex type, describes the type of each coordinate.
834 - For a special record or union type encoding a dynamic-sized type
835 in GNAT, a memoized pointer to a corresponding static version of
837 - Unused otherwise. */
839 struct type
*target_type
;
841 /* * For structure and union types, a description of each field.
842 For set and pascal array types, there is one "field",
843 whose type is the domain type of the set or array.
844 For range types, there are two "fields",
845 the minimum and maximum values (both inclusive).
846 For enum types, each possible value is described by one "field".
847 For a function or method type, a "field" for each parameter.
848 For C++ classes, there is one field for each base class (if it is
849 a derived class) plus one field for each class data member. Member
850 functions are recorded elsewhere.
852 Using a pointer to a separate array of fields
853 allows all types to have the same size, which is useful
854 because we can allocate the space for a type before
855 we know what to put in it. */
859 struct field
*fields
;
861 /* * Union member used for range types. */
863 struct range_bounds
*bounds
;
865 /* If this is a scalar type, then this is its corresponding
867 struct type
*complex_type
;
871 /* * Slot to point to additional language-specific fields of this
874 union type_specific type_specific
;
876 /* * Contains all dynamic type properties. */
877 struct dynamic_prop_list
*dyn_prop_list
;
880 /* * Number of bits allocated for alignment. */
882 #define TYPE_ALIGN_BITS 8
884 /* * A ``struct type'' describes a particular instance of a type, with
885 some particular qualification. */
889 /* Get the type code of this type.
891 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
892 type, you need to do `check_typedef (type)->code ()`. */
893 type_code
code () const
895 return this->main_type
->code
;
898 /* Set the type code of this type. */
899 void set_code (type_code code
)
901 this->main_type
->code
= code
;
904 /* Get the name of this type. */
905 const char *name () const
907 return this->main_type
->name
;
910 /* Set the name of this type. */
911 void set_name (const char *name
)
913 this->main_type
->name
= name
;
916 /* Get the number of fields of this type. */
917 int num_fields () const
919 return this->main_type
->nfields
;
922 /* Set the number of fields of this type. */
923 void set_num_fields (int num_fields
)
925 this->main_type
->nfields
= num_fields
;
928 /* Get the fields array of this type. */
929 struct field
*fields () const
931 return this->main_type
->flds_bnds
.fields
;
934 /* Get the field at index IDX. */
935 struct field
&field (int idx
) const
937 return this->fields ()[idx
];
940 /* Set the fields array of this type. */
941 void set_fields (struct field
*fields
)
943 this->main_type
->flds_bnds
.fields
= fields
;
946 type
*index_type () const
948 return this->field (0).type ();
951 void set_index_type (type
*index_type
)
953 this->field (0).set_type (index_type
);
956 /* * Return the dynamic property of the requested KIND from this type's
957 list of dynamic properties. */
958 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
960 /* * Given a dynamic property PROP of a given KIND, add this dynamic
961 property to this type.
963 This function assumes that this type is objfile-owned. */
964 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
966 /* * Remove dynamic property of kind KIND from this type, if it exists. */
967 void remove_dyn_prop (dynamic_prop_node_kind kind
);
969 /* * Type that is a pointer to this type.
970 NULL if no such pointer-to type is known yet.
971 The debugger may add the address of such a type
972 if it has to construct one later. */
974 struct type
*pointer_type
;
976 /* * C++: also need a reference type. */
978 struct type
*reference_type
;
980 /* * A C++ rvalue reference type added in C++11. */
982 struct type
*rvalue_reference_type
;
984 /* * Variant chain. This points to a type that differs from this
985 one only in qualifiers and length. Currently, the possible
986 qualifiers are const, volatile, code-space, data-space, and
987 address class. The length may differ only when one of the
988 address class flags are set. The variants are linked in a
989 circular ring and share MAIN_TYPE. */
993 /* * The alignment for this type. Zero means that the alignment was
994 not specified in the debug info. Note that this is stored in a
995 funny way: as the log base 2 (plus 1) of the alignment; so a
996 value of 1 means the alignment is 1, and a value of 9 means the
999 unsigned align_log2
: TYPE_ALIGN_BITS
;
1001 /* * Flags specific to this instance of the type, indicating where
1004 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1005 binary or-ed with the target type, with a special case for
1006 address class and space class. For example if this typedef does
1007 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1008 instance flags are completely inherited from the target type. No
1009 qualifiers can be cleared by the typedef. See also
1011 unsigned instance_flags
: 9;
1013 /* * Length of storage for a value of this type. The value is the
1014 expression in host bytes of what sizeof(type) would return. This
1015 size includes padding. For example, an i386 extended-precision
1016 floating point value really only occupies ten bytes, but most
1017 ABI's declare its size to be 12 bytes, to preserve alignment.
1018 A `struct type' representing such a floating-point type would
1019 have a `length' value of 12, even though the last two bytes are
1022 Since this field is expressed in host bytes, its value is appropriate
1023 to pass to memcpy and such (it is assumed that GDB itself always runs
1024 on an 8-bits addressable architecture). However, when using it for
1025 target address arithmetic (e.g. adding it to a target address), the
1026 type_length_units function should be used in order to get the length
1027 expressed in target addressable memory units. */
1031 /* * Core type, shared by a group of qualified types. */
1033 struct main_type
*main_type
;
1036 #define NULL_TYPE ((struct type *) 0)
1041 /* * The overloaded name.
1042 This is generally allocated in the objfile's obstack.
1043 However stabsread.c sometimes uses malloc. */
1047 /* * The number of methods with this name. */
1051 /* * The list of methods. */
1053 struct fn_field
*fn_fields
;
1060 /* * If is_stub is clear, this is the mangled name which we can look
1061 up to find the address of the method (FIXME: it would be cleaner
1062 to have a pointer to the struct symbol here instead).
1064 If is_stub is set, this is the portion of the mangled name which
1065 specifies the arguments. For example, "ii", if there are two int
1066 arguments, or "" if there are no arguments. See gdb_mangle_name
1067 for the conversion from this format to the one used if is_stub is
1070 const char *physname
;
1072 /* * The function type for the method.
1074 (This comment used to say "The return value of the method", but
1075 that's wrong. The function type is expected here, i.e. something
1076 with TYPE_CODE_METHOD, and *not* the return-value type). */
1080 /* * For virtual functions. First baseclass that defines this
1081 virtual function. */
1083 struct type
*fcontext
;
1087 unsigned int is_const
:1;
1088 unsigned int is_volatile
:1;
1089 unsigned int is_private
:1;
1090 unsigned int is_protected
:1;
1091 unsigned int is_artificial
:1;
1093 /* * A stub method only has some fields valid (but they are enough
1094 to reconstruct the rest of the fields). */
1096 unsigned int is_stub
:1;
1098 /* * True if this function is a constructor, false otherwise. */
1100 unsigned int is_constructor
: 1;
1102 /* * True if this function is deleted, false otherwise. */
1104 unsigned int is_deleted
: 1;
1106 /* * DW_AT_defaulted attribute for this function. The value is one
1107 of the DW_DEFAULTED constants. */
1109 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1113 unsigned int dummy
:6;
1115 /* * Index into that baseclass's virtual function table, minus 2;
1116 else if static: VOFFSET_STATIC; else: 0. */
1118 unsigned int voffset
:16;
1120 #define VOFFSET_STATIC 1
1126 /* * Unqualified name to be prefixed by owning class qualified
1131 /* * Type this typedef named NAME represents. */
1135 /* * True if this field was declared protected, false otherwise. */
1136 unsigned int is_protected
: 1;
1138 /* * True if this field was declared private, false otherwise. */
1139 unsigned int is_private
: 1;
1142 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1143 TYPE_CODE_UNION nodes. */
1145 struct cplus_struct_type
1147 /* * Number of base classes this type derives from. The
1148 baseclasses are stored in the first N_BASECLASSES fields
1149 (i.e. the `fields' field of the struct type). The only fields
1150 of struct field that are used are: type, name, loc.bitpos. */
1152 short n_baseclasses
;
1154 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1155 All access to this field must be through TYPE_VPTR_FIELDNO as one
1156 thing it does is check whether the field has been initialized.
1157 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1158 which for portability reasons doesn't initialize this field.
1159 TYPE_VPTR_FIELDNO returns -1 for this case.
1161 If -1, we were unable to find the virtual function table pointer in
1162 initial symbol reading, and get_vptr_fieldno should be called to find
1163 it if possible. get_vptr_fieldno will update this field if possible.
1164 Otherwise the value is left at -1.
1166 Unused if this type does not have virtual functions. */
1170 /* * Number of methods with unique names. All overloaded methods
1171 with the same name count only once. */
1175 /* * Number of template arguments. */
1177 unsigned short n_template_arguments
;
1179 /* * One if this struct is a dynamic class, as defined by the
1180 Itanium C++ ABI: if it requires a virtual table pointer,
1181 because it or any of its base classes have one or more virtual
1182 member functions or virtual base classes. Minus one if not
1183 dynamic. Zero if not yet computed. */
1187 /* * The calling convention for this type, fetched from the
1188 DW_AT_calling_convention attribute. The value is one of the
1191 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1193 /* * The base class which defined the virtual function table pointer. */
1195 struct type
*vptr_basetype
;
1197 /* * For derived classes, the number of base classes is given by
1198 n_baseclasses and virtual_field_bits is a bit vector containing
1199 one bit per base class. If the base class is virtual, the
1200 corresponding bit will be set.
1205 class C : public B, public virtual A {};
1207 B is a baseclass of C; A is a virtual baseclass for C.
1208 This is a C++ 2.0 language feature. */
1210 B_TYPE
*virtual_field_bits
;
1212 /* * For classes with private fields, the number of fields is
1213 given by nfields and private_field_bits is a bit vector
1214 containing one bit per field.
1216 If the field is private, the corresponding bit will be set. */
1218 B_TYPE
*private_field_bits
;
1220 /* * For classes with protected fields, the number of fields is
1221 given by nfields and protected_field_bits is a bit vector
1222 containing one bit per field.
1224 If the field is private, the corresponding bit will be set. */
1226 B_TYPE
*protected_field_bits
;
1228 /* * For classes with fields to be ignored, either this is
1229 optimized out or this field has length 0. */
1231 B_TYPE
*ignore_field_bits
;
1233 /* * For classes, structures, and unions, a description of each
1234 field, which consists of an overloaded name, followed by the
1235 types of arguments that the method expects, and then the name
1236 after it has been renamed to make it distinct.
1238 fn_fieldlists points to an array of nfn_fields of these. */
1240 struct fn_fieldlist
*fn_fieldlists
;
1242 /* * typedefs defined inside this class. typedef_field points to
1243 an array of typedef_field_count elements. */
1245 struct decl_field
*typedef_field
;
1247 unsigned typedef_field_count
;
1249 /* * The nested types defined by this type. nested_types points to
1250 an array of nested_types_count elements. */
1252 struct decl_field
*nested_types
;
1254 unsigned nested_types_count
;
1256 /* * The template arguments. This is an array with
1257 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1260 struct symbol
**template_arguments
;
1263 /* * Struct used to store conversion rankings. */
1269 /* * When two conversions are of the same type and therefore have
1270 the same rank, subrank is used to differentiate the two.
1272 Eg: Two derived-class-pointer to base-class-pointer conversions
1273 would both have base pointer conversion rank, but the
1274 conversion with the shorter distance to the ancestor is
1275 preferable. 'subrank' would be used to reflect that. */
1280 /* * Used for ranking a function for overload resolution. */
1282 typedef std::vector
<rank
> badness_vector
;
1284 /* * GNAT Ada-specific information for various Ada types. */
1286 struct gnat_aux_type
1288 /* * Parallel type used to encode information about dynamic types
1289 used in Ada (such as variant records, variable-size array,
1291 struct type
* descriptive_type
;
1294 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1298 /* * The calling convention for targets supporting multiple ABIs.
1299 Right now this is only fetched from the Dwarf-2
1300 DW_AT_calling_convention attribute. The value is one of the
1303 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1305 /* * Whether this function normally returns to its caller. It is
1306 set from the DW_AT_noreturn attribute if set on the
1307 DW_TAG_subprogram. */
1309 unsigned int is_noreturn
: 1;
1311 /* * Only those DW_TAG_call_site's in this function that have
1312 DW_AT_call_tail_call set are linked in this list. Function
1313 without its tail call list complete
1314 (DW_AT_call_all_tail_calls or its superset
1315 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1316 DW_TAG_call_site's exist in such function. */
1318 struct call_site
*tail_call_list
;
1320 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1321 contains the method. */
1323 struct type
*self_type
;
1326 /* struct call_site_parameter can be referenced in callees by several ways. */
1328 enum call_site_parameter_kind
1330 /* * Use field call_site_parameter.u.dwarf_reg. */
1331 CALL_SITE_PARAMETER_DWARF_REG
,
1333 /* * Use field call_site_parameter.u.fb_offset. */
1334 CALL_SITE_PARAMETER_FB_OFFSET
,
1336 /* * Use field call_site_parameter.u.param_offset. */
1337 CALL_SITE_PARAMETER_PARAM_OFFSET
1340 struct call_site_target
1342 union field_location loc
;
1344 /* * Discriminant for union field_location. */
1346 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1349 union call_site_parameter_u
1351 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1352 as DWARF register number, for register passed
1357 /* * Offset from the callee's frame base, for stack passed
1358 parameters. This equals offset from the caller's stack
1361 CORE_ADDR fb_offset
;
1363 /* * Offset relative to the start of this PER_CU to
1364 DW_TAG_formal_parameter which is referenced by both
1365 caller and the callee. */
1367 cu_offset param_cu_off
;
1370 struct call_site_parameter
1372 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1374 union call_site_parameter_u u
;
1376 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1378 const gdb_byte
*value
;
1381 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1382 It may be NULL if not provided by DWARF. */
1384 const gdb_byte
*data_value
;
1385 size_t data_value_size
;
1388 /* * A place where a function gets called from, represented by
1389 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1393 /* * Address of the first instruction after this call. It must be
1394 the first field as we overload core_addr_hash and core_addr_eq
1399 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1401 struct call_site
*tail_call_next
;
1403 /* * Describe DW_AT_call_target. Missing attribute uses
1404 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1406 struct call_site_target target
;
1408 /* * Size of the PARAMETER array. */
1410 unsigned parameter_count
;
1412 /* * CU of the function where the call is located. It gets used
1413 for DWARF blocks execution in the parameter array below. */
1415 dwarf2_per_cu_data
*per_cu
;
1417 /* objfile of the function where the call is located. */
1419 dwarf2_per_objfile
*per_objfile
;
1421 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1423 struct call_site_parameter parameter
[1];
1426 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1427 static structure. */
1429 extern const struct cplus_struct_type cplus_struct_default
;
1431 extern void allocate_cplus_struct_type (struct type
*);
1433 #define INIT_CPLUS_SPECIFIC(type) \
1434 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1435 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1436 &cplus_struct_default)
1438 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1440 #define HAVE_CPLUS_STRUCT(type) \
1441 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1442 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1444 #define INIT_NONE_SPECIFIC(type) \
1445 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1446 TYPE_MAIN_TYPE (type)->type_specific = {})
1448 extern const struct gnat_aux_type gnat_aux_default
;
1450 extern void allocate_gnat_aux_type (struct type
*);
1452 #define INIT_GNAT_SPECIFIC(type) \
1453 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1454 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1455 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1456 /* * A macro that returns non-zero if the type-specific data should be
1457 read as "gnat-stuff". */
1458 #define HAVE_GNAT_AUX_INFO(type) \
1459 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1461 /* * True if TYPE is known to be an Ada type of some kind. */
1462 #define ADA_TYPE_P(type) \
1463 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1464 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1465 && TYPE_FIXED_INSTANCE (type)))
1467 #define INIT_FUNC_SPECIFIC(type) \
1468 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1469 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1470 TYPE_ZALLOC (type, \
1471 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1473 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1474 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1475 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1476 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1477 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1478 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1479 #define TYPE_CHAIN(thistype) (thistype)->chain
1480 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1481 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1482 so you only have to call check_typedef once. Since allocate_value
1483 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1484 #define TYPE_LENGTH(thistype) (thistype)->length
1486 /* * Return the alignment of the type in target addressable memory
1487 units, or 0 if no alignment was specified. */
1488 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1490 /* * Return the alignment of the type in target addressable memory
1491 units, or 0 if no alignment was specified. */
1492 extern unsigned type_raw_align (struct type
*);
1494 /* * Return the alignment of the type in target addressable memory
1495 units. Return 0 if the alignment cannot be determined; but note
1496 that this makes an effort to compute the alignment even it it was
1497 not specified in the debug info. */
1498 extern unsigned type_align (struct type
*);
1500 /* * Set the alignment of the type. The alignment must be a power of
1501 2. Returns false if the given value does not fit in the available
1502 space in struct type. */
1503 extern bool set_type_align (struct type
*, ULONGEST
);
1505 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1506 #define TYPE_LOW_BOUND(range_type) \
1507 TYPE_RANGE_DATA(range_type)->low.data.const_val
1508 #define TYPE_HIGH_BOUND(range_type) \
1509 TYPE_RANGE_DATA(range_type)->high.data.const_val
1510 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1511 (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
1512 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1513 (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
1514 #define TYPE_HIGH_BOUND_KIND(range_type) \
1515 TYPE_RANGE_DATA(range_type)->high.kind
1516 #define TYPE_LOW_BOUND_KIND(range_type) \
1517 TYPE_RANGE_DATA(range_type)->low.kind
1518 #define TYPE_BIT_STRIDE(range_type) \
1519 (TYPE_RANGE_DATA(range_type)->stride.data.const_val \
1520 * (TYPE_RANGE_DATA(range_type)->flag_is_byte_stride ? 8 : 1))
1522 /* Property accessors for the type data location. */
1523 #define TYPE_DATA_LOCATION(thistype) \
1524 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1525 #define TYPE_DATA_LOCATION_BATON(thistype) \
1526 TYPE_DATA_LOCATION (thistype)->data.baton
1527 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1528 TYPE_DATA_LOCATION (thistype)->data.const_val
1529 #define TYPE_DATA_LOCATION_KIND(thistype) \
1530 TYPE_DATA_LOCATION (thistype)->kind
1531 #define TYPE_DYNAMIC_LENGTH(thistype) \
1532 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1534 /* Property accessors for the type allocated/associated. */
1535 #define TYPE_ALLOCATED_PROP(thistype) \
1536 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1537 #define TYPE_ASSOCIATED_PROP(thistype) \
1538 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1540 /* Attribute accessors for dynamic properties. */
1541 #define TYPE_DYN_PROP_BATON(dynprop) \
1543 #define TYPE_DYN_PROP_ADDR(dynprop) \
1544 dynprop->data.const_val
1545 #define TYPE_DYN_PROP_KIND(dynprop) \
1549 /* Accessors for struct range_bounds data attached to an array type's
1552 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1553 TYPE_HIGH_BOUND_UNDEFINED((arraytype)->index_type ())
1554 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1555 TYPE_LOW_BOUND_UNDEFINED((arraytype)->index_type ())
1557 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1558 (TYPE_HIGH_BOUND((arraytype)->index_type ()))
1560 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1561 (TYPE_LOW_BOUND((arraytype)->index_type ()))
1563 #define TYPE_ARRAY_BIT_STRIDE(arraytype) \
1564 (TYPE_BIT_STRIDE(((arraytype)->index_type ())))
1568 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1569 /* Do not call this, use TYPE_SELF_TYPE. */
1570 extern struct type
*internal_type_self_type (struct type
*);
1571 extern void set_type_self_type (struct type
*, struct type
*);
1573 extern int internal_type_vptr_fieldno (struct type
*);
1574 extern void set_type_vptr_fieldno (struct type
*, int);
1575 extern struct type
*internal_type_vptr_basetype (struct type
*);
1576 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1577 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1578 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1580 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1581 #define TYPE_SPECIFIC_FIELD(thistype) \
1582 TYPE_MAIN_TYPE(thistype)->type_specific_field
1583 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1584 where we're trying to print an Ada array using the C language.
1585 In that case, there is no "cplus_stuff", but the C language assumes
1586 that there is. What we do, in that case, is pretend that there is
1587 an implicit one which is the default cplus stuff. */
1588 #define TYPE_CPLUS_SPECIFIC(thistype) \
1589 (!HAVE_CPLUS_STRUCT(thistype) \
1590 ? (struct cplus_struct_type*)&cplus_struct_default \
1591 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1592 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1593 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1594 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1595 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1596 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1597 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1598 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1599 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1600 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1601 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1602 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1603 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1604 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1605 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1606 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1607 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1609 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1610 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1611 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1613 #define FIELD_NAME(thisfld) ((thisfld).name)
1614 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1615 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1616 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1617 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1618 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1619 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1620 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1621 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1622 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1623 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1624 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1625 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1626 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1627 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1628 #define SET_FIELD_PHYSNAME(thisfld, name) \
1629 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1630 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1631 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1632 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1633 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1634 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1635 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1636 FIELD_DWARF_BLOCK (thisfld) = (addr))
1637 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1638 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1640 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1641 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1642 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1643 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1644 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1645 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1646 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1647 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1648 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1649 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1651 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1652 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1653 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1654 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1655 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1656 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1657 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1658 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1659 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1660 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1661 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1662 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1663 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1664 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1665 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1666 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1667 #define TYPE_FIELD_PRIVATE(thistype, n) \
1668 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1669 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1670 #define TYPE_FIELD_PROTECTED(thistype, n) \
1671 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1672 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1673 #define TYPE_FIELD_IGNORE(thistype, n) \
1674 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1675 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1676 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1677 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1678 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1680 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1681 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1682 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1683 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1684 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1686 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1687 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1688 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1689 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1690 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1691 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1693 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1694 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1695 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1696 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1697 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1698 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1699 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1700 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1701 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1702 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1703 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1704 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1705 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1706 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1707 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1708 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1709 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1711 /* Accessors for typedefs defined by a class. */
1712 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1713 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1714 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1715 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1716 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1717 TYPE_TYPEDEF_FIELD (thistype, n).name
1718 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1719 TYPE_TYPEDEF_FIELD (thistype, n).type
1720 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1721 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1722 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1723 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1724 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1725 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1727 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1728 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1729 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1730 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1731 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1732 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1733 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1734 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1735 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1736 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1737 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1738 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1739 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1740 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1742 #define TYPE_IS_OPAQUE(thistype) \
1743 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1744 || ((thistype)->code () == TYPE_CODE_UNION)) \
1745 && ((thistype)->num_fields () == 0) \
1746 && (!HAVE_CPLUS_STRUCT (thistype) \
1747 || TYPE_NFN_FIELDS (thistype) == 0) \
1748 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1750 /* * A helper macro that returns the name of a type or "unnamed type"
1751 if the type has no name. */
1753 #define TYPE_SAFE_NAME(type) \
1754 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1756 /* * A helper macro that returns the name of an error type. If the
1757 type has a name, it is used; otherwise, a default is used. */
1759 #define TYPE_ERROR_NAME(type) \
1760 (type->name () ? type->name () : _("<error type>"))
1762 /* Given TYPE, return its floatformat. */
1763 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1767 /* Integral types. */
1769 /* Implicit size/sign (based on the architecture's ABI). */
1770 struct type
*builtin_void
;
1771 struct type
*builtin_char
;
1772 struct type
*builtin_short
;
1773 struct type
*builtin_int
;
1774 struct type
*builtin_long
;
1775 struct type
*builtin_signed_char
;
1776 struct type
*builtin_unsigned_char
;
1777 struct type
*builtin_unsigned_short
;
1778 struct type
*builtin_unsigned_int
;
1779 struct type
*builtin_unsigned_long
;
1780 struct type
*builtin_half
;
1781 struct type
*builtin_float
;
1782 struct type
*builtin_double
;
1783 struct type
*builtin_long_double
;
1784 struct type
*builtin_complex
;
1785 struct type
*builtin_double_complex
;
1786 struct type
*builtin_string
;
1787 struct type
*builtin_bool
;
1788 struct type
*builtin_long_long
;
1789 struct type
*builtin_unsigned_long_long
;
1790 struct type
*builtin_decfloat
;
1791 struct type
*builtin_decdouble
;
1792 struct type
*builtin_declong
;
1794 /* "True" character types.
1795 We use these for the '/c' print format, because c_char is just a
1796 one-byte integral type, which languages less laid back than C
1797 will print as ... well, a one-byte integral type. */
1798 struct type
*builtin_true_char
;
1799 struct type
*builtin_true_unsigned_char
;
1801 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1802 is for when an architecture needs to describe a register that has
1804 struct type
*builtin_int0
;
1805 struct type
*builtin_int8
;
1806 struct type
*builtin_uint8
;
1807 struct type
*builtin_int16
;
1808 struct type
*builtin_uint16
;
1809 struct type
*builtin_int24
;
1810 struct type
*builtin_uint24
;
1811 struct type
*builtin_int32
;
1812 struct type
*builtin_uint32
;
1813 struct type
*builtin_int64
;
1814 struct type
*builtin_uint64
;
1815 struct type
*builtin_int128
;
1816 struct type
*builtin_uint128
;
1818 /* Wide character types. */
1819 struct type
*builtin_char16
;
1820 struct type
*builtin_char32
;
1821 struct type
*builtin_wchar
;
1823 /* Pointer types. */
1825 /* * `pointer to data' type. Some target platforms use an implicitly
1826 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1827 struct type
*builtin_data_ptr
;
1829 /* * `pointer to function (returning void)' type. Harvard
1830 architectures mean that ABI function and code pointers are not
1831 interconvertible. Similarly, since ANSI, C standards have
1832 explicitly said that pointers to functions and pointers to data
1833 are not interconvertible --- that is, you can't cast a function
1834 pointer to void * and back, and expect to get the same value.
1835 However, all function pointer types are interconvertible, so void
1836 (*) () can server as a generic function pointer. */
1838 struct type
*builtin_func_ptr
;
1840 /* * `function returning pointer to function (returning void)' type.
1841 The final void return type is not significant for it. */
1843 struct type
*builtin_func_func
;
1845 /* Special-purpose types. */
1847 /* * This type is used to represent a GDB internal function. */
1849 struct type
*internal_fn
;
1851 /* * This type is used to represent an xmethod. */
1852 struct type
*xmethod
;
1855 /* * Return the type table for the specified architecture. */
1857 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1859 /* * Per-objfile types used by symbol readers. */
1863 /* Basic types based on the objfile architecture. */
1864 struct type
*builtin_void
;
1865 struct type
*builtin_char
;
1866 struct type
*builtin_short
;
1867 struct type
*builtin_int
;
1868 struct type
*builtin_long
;
1869 struct type
*builtin_long_long
;
1870 struct type
*builtin_signed_char
;
1871 struct type
*builtin_unsigned_char
;
1872 struct type
*builtin_unsigned_short
;
1873 struct type
*builtin_unsigned_int
;
1874 struct type
*builtin_unsigned_long
;
1875 struct type
*builtin_unsigned_long_long
;
1876 struct type
*builtin_half
;
1877 struct type
*builtin_float
;
1878 struct type
*builtin_double
;
1879 struct type
*builtin_long_double
;
1881 /* * This type is used to represent symbol addresses. */
1882 struct type
*builtin_core_addr
;
1884 /* * This type represents a type that was unrecognized in symbol
1886 struct type
*builtin_error
;
1888 /* * Types used for symbols with no debug information. */
1889 struct type
*nodebug_text_symbol
;
1890 struct type
*nodebug_text_gnu_ifunc_symbol
;
1891 struct type
*nodebug_got_plt_symbol
;
1892 struct type
*nodebug_data_symbol
;
1893 struct type
*nodebug_unknown_symbol
;
1894 struct type
*nodebug_tls_symbol
;
1897 /* * Return the type table for the specified objfile. */
1899 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1901 /* Explicit floating-point formats. See "floatformat.h". */
1902 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1903 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1904 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1905 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1906 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1907 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1908 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1909 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1910 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1911 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1912 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1913 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1916 /* Allocate space for storing data associated with a particular
1917 type. We ensure that the space is allocated using the same
1918 mechanism that was used to allocate the space for the type
1919 structure itself. I.e. if the type is on an objfile's
1920 objfile_obstack, then the space for data associated with that type
1921 will also be allocated on the objfile_obstack. If the type is
1922 associated with a gdbarch, then the space for data associated with that
1923 type will also be allocated on the gdbarch_obstack.
1925 If a type is not associated with neither an objfile or a gdbarch then
1926 you should not use this macro to allocate space for data, instead you
1927 should call xmalloc directly, and ensure the memory is correctly freed
1928 when it is no longer needed. */
1930 #define TYPE_ALLOC(t,size) \
1931 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
1932 ? &TYPE_OBJFILE (t)->objfile_obstack \
1933 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
1937 /* See comment on TYPE_ALLOC. */
1939 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
1941 /* Use alloc_type to allocate a type owned by an objfile. Use
1942 alloc_type_arch to allocate a type owned by an architecture. Use
1943 alloc_type_copy to allocate a type with the same owner as a
1944 pre-existing template type, no matter whether objfile or
1946 extern struct type
*alloc_type (struct objfile
*);
1947 extern struct type
*alloc_type_arch (struct gdbarch
*);
1948 extern struct type
*alloc_type_copy (const struct type
*);
1950 /* * Return the type's architecture. For types owned by an
1951 architecture, that architecture is returned. For types owned by an
1952 objfile, that objfile's architecture is returned. */
1954 extern struct gdbarch
*get_type_arch (const struct type
*);
1956 /* * This returns the target type (or NULL) of TYPE, also skipping
1959 extern struct type
*get_target_type (struct type
*type
);
1961 /* Return the equivalent of TYPE_LENGTH, but in number of target
1962 addressable memory units of the associated gdbarch instead of bytes. */
1964 extern unsigned int type_length_units (struct type
*type
);
1966 /* * Helper function to construct objfile-owned types. */
1968 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
1970 extern struct type
*init_integer_type (struct objfile
*, int, int,
1972 extern struct type
*init_character_type (struct objfile
*, int, int,
1974 extern struct type
*init_boolean_type (struct objfile
*, int, int,
1976 extern struct type
*init_float_type (struct objfile
*, int, const char *,
1977 const struct floatformat
**,
1978 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
1979 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
1980 extern struct type
*init_complex_type (const char *, struct type
*);
1981 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
1984 /* Helper functions to construct architecture-owned types. */
1985 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
1987 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
1989 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
1991 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
1993 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
1994 const struct floatformat
**);
1995 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
1996 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
1999 /* Helper functions to construct a struct or record type. An
2000 initially empty type is created using arch_composite_type().
2001 Fields are then added using append_composite_type_field*(). A union
2002 type has its size set to the largest field. A struct type has each
2003 field packed against the previous. */
2005 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2006 const char *name
, enum type_code code
);
2007 extern void append_composite_type_field (struct type
*t
, const char *name
,
2008 struct type
*field
);
2009 extern void append_composite_type_field_aligned (struct type
*t
,
2013 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2014 struct type
*field
);
2016 /* Helper functions to construct a bit flags type. An initially empty
2017 type is created using arch_flag_type(). Flags are then added using
2018 append_flag_type_field() and append_flag_type_flag(). */
2019 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2020 const char *name
, int bit
);
2021 extern void append_flags_type_field (struct type
*type
,
2022 int start_bitpos
, int nr_bits
,
2023 struct type
*field_type
, const char *name
);
2024 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2027 extern void make_vector_type (struct type
*array_type
);
2028 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2030 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2031 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2032 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2035 extern struct type
*make_reference_type (struct type
*, struct type
**,
2038 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2040 extern struct type
*make_restrict_type (struct type
*);
2042 extern struct type
*make_unqualified_type (struct type
*);
2044 extern struct type
*make_atomic_type (struct type
*);
2046 extern void replace_type (struct type
*, struct type
*);
2048 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2050 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2052 extern struct type
*make_type_with_address_space (struct type
*type
,
2053 int space_identifier
);
2055 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2057 extern struct type
*lookup_methodptr_type (struct type
*);
2059 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2060 struct type
*to_type
, struct field
*args
,
2061 int nargs
, int varargs
);
2063 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2066 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2068 extern struct type
*allocate_stub_method (struct type
*);
2070 extern const char *type_name_or_error (struct type
*type
);
2074 /* The field of the element, or NULL if no element was found. */
2075 struct field
*field
;
2077 /* The bit offset of the element in the parent structure. */
2081 /* Given a type TYPE, lookup the field and offset of the component named
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, the returned structure will have field set to
2091 NULL if there is no component named NAME.
2093 If the component NAME is a field in an anonymous substructure of
2094 TYPE, the returned offset is a "global" offset relative to TYPE
2095 rather than an offset within the substructure. */
2097 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2099 /* Given a type TYPE, lookup the type of the component named NAME.
2101 TYPE can be either a struct or union, or a pointer or reference to
2102 a struct or union. If it is a pointer or reference, its target
2103 type is automatically used. Thus '.' and '->' are interchangable,
2104 as specified for the definitions of the expression element types
2105 STRUCTOP_STRUCT and STRUCTOP_PTR.
2107 If NOERR is nonzero, return NULL if there is no component named
2110 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2112 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2114 extern struct type
*lookup_pointer_type (struct type
*);
2116 extern struct type
*make_function_type (struct type
*, struct type
**);
2118 extern struct type
*lookup_function_type (struct type
*);
2120 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2124 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2128 extern struct type
*create_array_type_with_stride
2129 (struct type
*, struct type
*, struct type
*,
2130 struct dynamic_prop
*, unsigned int);
2132 extern struct type
*create_range_type (struct type
*, struct type
*,
2133 const struct dynamic_prop
*,
2134 const struct dynamic_prop
*,
2137 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2138 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2141 extern struct type
* create_range_type_with_stride
2142 (struct type
*result_type
, struct type
*index_type
,
2143 const struct dynamic_prop
*low_bound
,
2144 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2145 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2147 extern struct type
*create_array_type (struct type
*, struct type
*,
2150 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2152 extern struct type
*create_string_type (struct type
*, struct type
*,
2154 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2156 extern struct type
*create_set_type (struct type
*, struct type
*);
2158 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2161 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2164 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2166 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2168 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2169 ADDR specifies the location of the variable the type is bound to.
2170 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2171 static properties is returned. */
2172 extern struct type
*resolve_dynamic_type
2173 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2176 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2177 extern int is_dynamic_type (struct type
*type
);
2179 extern struct type
*check_typedef (struct type
*);
2181 extern void check_stub_method_group (struct type
*, int);
2183 extern char *gdb_mangle_name (struct type
*, int, int);
2185 extern struct type
*lookup_typename (const struct language_defn
*,
2186 const char *, const struct block
*, int);
2188 extern struct type
*lookup_template_type (const char *, struct type
*,
2189 const struct block
*);
2191 extern int get_vptr_fieldno (struct type
*, struct type
**);
2193 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2195 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2196 LONGEST
*high_bound
);
2198 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2200 extern int class_types_same_p (const struct type
*, const struct type
*);
2202 extern int is_ancestor (struct type
*, struct type
*);
2204 extern int is_public_ancestor (struct type
*, struct type
*);
2206 extern int is_unique_ancestor (struct type
*, struct value
*);
2208 /* Overload resolution */
2210 /* * Badness if parameter list length doesn't match arg list length. */
2211 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2213 /* * Dummy badness value for nonexistent parameter positions. */
2214 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2215 /* * Badness if no conversion among types. */
2216 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2218 /* * Badness of an exact match. */
2219 extern const struct rank EXACT_MATCH_BADNESS
;
2221 /* * Badness of integral promotion. */
2222 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2223 /* * Badness of floating promotion. */
2224 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2225 /* * Badness of converting a derived class pointer
2226 to a base class pointer. */
2227 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2228 /* * Badness of integral conversion. */
2229 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2230 /* * Badness of floating conversion. */
2231 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2232 /* * Badness of integer<->floating conversions. */
2233 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2234 /* * Badness of conversion of pointer to void pointer. */
2235 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2236 /* * Badness of conversion to boolean. */
2237 extern const struct rank BOOL_CONVERSION_BADNESS
;
2238 /* * Badness of converting derived to base class. */
2239 extern const struct rank BASE_CONVERSION_BADNESS
;
2240 /* * Badness of converting from non-reference to reference. Subrank
2241 is the type of reference conversion being done. */
2242 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2243 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2244 /* * Conversion to rvalue reference. */
2245 #define REFERENCE_CONVERSION_RVALUE 1
2246 /* * Conversion to const lvalue reference. */
2247 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2249 /* * Badness of converting integer 0 to NULL pointer. */
2250 extern const struct rank NULL_POINTER_CONVERSION
;
2251 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2253 extern const struct rank CV_CONVERSION_BADNESS
;
2254 #define CV_CONVERSION_CONST 1
2255 #define CV_CONVERSION_VOLATILE 2
2257 /* Non-standard conversions allowed by the debugger */
2259 /* * Converting a pointer to an int is usually OK. */
2260 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2262 /* * Badness of converting a (non-zero) integer constant
2264 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2266 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2267 extern int compare_ranks (struct rank a
, struct rank b
);
2269 extern int compare_badness (const badness_vector
&,
2270 const badness_vector
&);
2272 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2273 gdb::array_view
<value
*> args
);
2275 extern struct rank
rank_one_type (struct type
*, struct type
*,
2278 extern void recursive_dump_type (struct type
*, int);
2280 extern int field_is_static (struct field
*);
2284 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2285 const struct value_print_options
*,
2286 int, struct ui_file
*);
2288 extern int can_dereference (struct type
*);
2290 extern int is_integral_type (struct type
*);
2292 extern int is_floating_type (struct type
*);
2294 extern int is_scalar_type (struct type
*type
);
2296 extern int is_scalar_type_recursive (struct type
*);
2298 extern int class_or_union_p (const struct type
*);
2300 extern void maintenance_print_type (const char *, int);
2302 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2304 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2306 htab_t copied_types
);
2308 extern struct type
*copy_type (const struct type
*type
);
2310 extern bool types_equal (struct type
*, struct type
*);
2312 extern bool types_deeply_equal (struct type
*, struct type
*);
2314 extern int type_not_allocated (const struct type
*type
);
2316 extern int type_not_associated (const struct type
*type
);
2318 /* * When the type includes explicit byte ordering, return that.
2319 Otherwise, the byte ordering from gdbarch_byte_order for
2320 get_type_arch is returned. */
2322 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2324 /* A flag to enable printing of debugging information of C++
2327 extern unsigned int overload_debug
;
2329 #endif /* GDBTYPES_H */