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
;
62 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
63 are already DWARF-specific. */
65 /* * Offset relative to the start of its containing CU (compilation
67 DEFINE_OFFSET_TYPE (cu_offset
, unsigned int);
69 /* * Offset relative to the start of its .debug_info or .debug_types
71 DEFINE_OFFSET_TYPE (sect_offset
, uint64_t);
74 sect_offset_str (sect_offset offset
)
76 return hex_string (to_underlying (offset
));
79 /* Some macros for char-based bitfields. */
81 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
82 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
83 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
84 #define B_TYPE unsigned char
85 #define B_BYTES(x) ( 1 + ((x)>>3) )
86 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
88 /* * Different kinds of data types are distinguished by the `code'
93 TYPE_CODE_BITSTRING
= -1, /**< Deprecated */
94 TYPE_CODE_UNDEF
= 0, /**< Not used; catches errors */
95 TYPE_CODE_PTR
, /**< Pointer type */
97 /* * Array type with lower & upper bounds.
99 Regardless of the language, GDB represents multidimensional
100 array types the way C does: as arrays of arrays. So an
101 instance of a GDB array type T can always be seen as a series
102 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
105 Row-major languages like C lay out multi-dimensional arrays so
106 that incrementing the rightmost index in a subscripting
107 expression results in the smallest change in the address of the
108 element referred to. Column-major languages like Fortran lay
109 them out so that incrementing the leftmost index results in the
112 This means that, in column-major languages, working our way
113 from type to target type corresponds to working through indices
114 from right to left, not left to right. */
117 TYPE_CODE_STRUCT
, /**< C struct or Pascal record */
118 TYPE_CODE_UNION
, /**< C union or Pascal variant part */
119 TYPE_CODE_ENUM
, /**< Enumeration type */
120 TYPE_CODE_FLAGS
, /**< Bit flags type */
121 TYPE_CODE_FUNC
, /**< Function type */
122 TYPE_CODE_INT
, /**< Integer type */
124 /* * Floating type. This is *NOT* a complex type. */
127 /* * Void type. The length field specifies the length (probably
128 always one) which is used in pointer arithmetic involving
129 pointers to this type, but actually dereferencing such a
130 pointer is invalid; a void type has no length and no actual
131 representation in memory or registers. A pointer to a void
132 type is a generic pointer. */
135 TYPE_CODE_SET
, /**< Pascal sets */
136 TYPE_CODE_RANGE
, /**< Range (integers within spec'd bounds). */
138 /* * A string type which is like an array of character but prints
139 differently. It does not contain a length field as Pascal
140 strings (for many Pascals, anyway) do; if we want to deal with
141 such strings, we should use a new type code. */
144 /* * Unknown type. The length field is valid if we were able to
145 deduce that much about the type, or 0 if we don't even know
150 TYPE_CODE_METHOD
, /**< Method type */
152 /* * Pointer-to-member-function type. This describes how to access a
153 particular member function of a class (possibly a virtual
154 member function). The representation may vary between different
158 /* * Pointer-to-member type. This is the offset within a class to
159 some particular data member. The only currently supported
160 representation uses an unbiased offset, with -1 representing
161 NULL; this is used by the Itanium C++ ABI (used by GCC on all
165 TYPE_CODE_REF
, /**< C++ Reference types */
167 TYPE_CODE_RVALUE_REF
, /**< C++ rvalue reference types */
169 TYPE_CODE_CHAR
, /**< *real* character type */
171 /* * Boolean type. 0 is false, 1 is true, and other values are
172 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
176 TYPE_CODE_COMPLEX
, /**< Complex float */
180 TYPE_CODE_NAMESPACE
, /**< C++ namespace. */
182 TYPE_CODE_DECFLOAT
, /**< Decimal floating point. */
184 TYPE_CODE_MODULE
, /**< Fortran module. */
186 /* * Internal function type. */
187 TYPE_CODE_INTERNAL_FUNCTION
,
189 /* * Methods implemented in extension languages. */
193 /* * Some bits for the type's instance_flags word. See the macros
194 below for documentation on each bit. */
196 enum type_instance_flag_value
: unsigned
198 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
199 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
200 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
201 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
202 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
203 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5),
204 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
205 TYPE_INSTANCE_FLAG_RESTRICT
= (1 << 7),
206 TYPE_INSTANCE_FLAG_ATOMIC
= (1 << 8)
209 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value
, type_instance_flags
);
211 /* * Unsigned integer type. If this is not set for a TYPE_CODE_INT,
212 the type is signed (unless TYPE_NOSIGN (below) is set). */
214 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
216 /* * No sign for this type. In C++, "char", "signed char", and
217 "unsigned char" are distinct types; so we need an extra flag to
218 indicate the absence of a sign! */
220 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
222 /* * A compiler may supply dwarf instrumentation
223 that indicates the desired endian interpretation of the variable
224 differs from the native endian representation. */
226 #define TYPE_ENDIANITY_NOT_DEFAULT(t) (TYPE_MAIN_TYPE (t)->flag_endianity_not_default)
228 /* * This appears in a type's flags word if it is a stub type (e.g.,
229 if someone referenced a type that wasn't defined in a source file
230 via (struct sir_not_appearing_in_this_film *)). */
232 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
234 /* * The target type of this type is a stub type, and this type needs
235 to be updated if it gets un-stubbed in check_typedef. Used for
236 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
237 based on the TYPE_LENGTH of the target type. Also, set for
238 TYPE_CODE_TYPEDEF. */
240 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
242 /* * This is a function type which appears to have a prototype. We
243 need this for function calls in order to tell us if it's necessary
244 to coerce the args, or to just do the standard conversions. This
245 is used with a short field. */
247 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
249 /* * This flag is used to indicate that processing for this type
252 (Mostly intended for HP platforms, where class methods, for
253 instance, can be encountered before their classes in the debug
254 info; the incomplete type has to be marked so that the class and
255 the method can be assigned correct types.) */
257 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
259 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
262 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
264 /* * Identify a vector type. Gcc is handling this by adding an extra
265 attribute to the array type. We slurp that in as a new flag of a
266 type. This is used only in dwarf2read.c. */
267 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
269 /* * The debugging formats (especially STABS) do not contain enough
270 information to represent all Ada types---especially those whose
271 size depends on dynamic quantities. Therefore, the GNAT Ada
272 compiler includes extra information in the form of additional type
273 definitions connected by naming conventions. This flag indicates
274 that the type is an ordinary (unencoded) GDB type that has been
275 created from the necessary run-time information, and does not need
276 further interpretation. Optionally marks ordinary, fixed-size GDB
279 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
281 /* * This debug target supports TYPE_STUB(t). In the unsupported case
282 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
283 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
284 guessed the TYPE_STUB(t) value (see dwarfread.c). */
286 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
288 /* * Not textual. By default, GDB treats all single byte integers as
289 characters (or elements of strings) unless this flag is set. */
291 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
293 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
294 address is returned by this function call. TYPE_TARGET_TYPE
295 determines the final returned function type to be presented to
298 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
300 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
301 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
302 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
304 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
305 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
306 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
308 /* * True if this type was declared using the "class" keyword. This is
309 only valid for C++ structure and enum types. If false, a structure
310 was declared as a "struct"; if true it was declared "class". For
311 enum types, this is true when "enum class" or "enum struct" was
312 used to declare the type.. */
314 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
316 /* * True if this type is a "flag" enum. A flag enum is one where all
317 the values are pairwise disjoint when "and"ed together. This
318 affects how enum values are printed. */
320 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
322 /* * Constant type. If this is set, the corresponding type has a
325 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
327 /* * Volatile type. If this is set, the corresponding type has a
328 volatile modifier. */
330 #define TYPE_VOLATILE(t) \
331 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
333 /* * Restrict type. If this is set, the corresponding type has a
334 restrict modifier. */
336 #define TYPE_RESTRICT(t) \
337 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
339 /* * Atomic type. If this is set, the corresponding type has an
342 #define TYPE_ATOMIC(t) \
343 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
345 /* * True if this type represents either an lvalue or lvalue reference type. */
347 #define TYPE_IS_REFERENCE(t) \
348 (TYPE_CODE (t) == TYPE_CODE_REF || TYPE_CODE (t) == TYPE_CODE_RVALUE_REF)
350 /* * True if this type is allocatable. */
351 #define TYPE_IS_ALLOCATABLE(t) \
352 (get_dyn_prop (DYN_PROP_ALLOCATED, t) != NULL)
354 /* * True if this type has variant parts. */
355 #define TYPE_HAS_VARIANT_PARTS(t) \
356 (get_dyn_prop (DYN_PROP_VARIANT_PARTS, t) != nullptr)
358 /* * True if this type has a dynamic length. */
359 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
360 (get_dyn_prop (DYN_PROP_BYTE_SIZE, t) != nullptr)
362 /* * Instruction-space delimited type. This is for Harvard architectures
363 which have separate instruction and data address spaces (and perhaps
366 GDB usually defines a flat address space that is a superset of the
367 architecture's two (or more) address spaces, but this is an extension
368 of the architecture's model.
370 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
371 resides in instruction memory, even if its address (in the extended
372 flat address space) does not reflect this.
374 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
375 corresponding type resides in the data memory space, even if
376 this is not indicated by its (flat address space) address.
378 If neither flag is set, the default space for functions / methods
379 is instruction space, and for data objects is data memory. */
381 #define TYPE_CODE_SPACE(t) \
382 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
384 #define TYPE_DATA_SPACE(t) \
385 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
387 /* * Address class flags. Some environments provide for pointers
388 whose size is different from that of a normal pointer or address
389 types where the bits are interpreted differently than normal
390 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
391 target specific ways to represent these different types of address
394 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
395 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
396 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
397 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
398 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
399 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
400 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
401 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
403 /* * Information about a single discriminant. */
405 struct discriminant_range
407 /* * The range of values for the variant. This is an inclusive
411 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
412 is true if this should be an unsigned comparison; false for
414 bool contains (ULONGEST value
, bool is_unsigned
) const
417 return value
>= low
&& value
<= high
;
418 LONGEST valuel
= (LONGEST
) value
;
419 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
425 /* * A single variant. A variant has a list of discriminant values.
426 When the discriminator matches one of these, the variant is
427 enabled. Each variant controls zero or more fields; and may also
428 control other variant parts as well. This struct corresponds to
429 DW_TAG_variant in DWARF. */
431 struct variant
: allocate_on_obstack
433 /* * The discriminant ranges for this variant. */
434 gdb::array_view
<discriminant_range
> discriminants
;
436 /* * The fields controlled by this variant. This is inclusive on
437 the low end and exclusive on the high end. A variant may not
438 control any fields, in which case the two values will be equal.
439 These are indexes into the type's array of fields. */
443 /* * Variant parts controlled by this variant. */
444 gdb::array_view
<variant_part
> parts
;
446 /* * Return true if this is the default variant. The default
447 variant can be recognized because it has no associated
449 bool is_default () const
451 return discriminants
.empty ();
454 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
455 if this should be an unsigned comparison; false for signed. */
456 bool matches (ULONGEST value
, bool is_unsigned
) const;
459 /* * A variant part. Each variant part has an optional discriminant
460 and holds an array of variants. This struct corresponds to
461 DW_TAG_variant_part in DWARF. */
463 struct variant_part
: allocate_on_obstack
465 /* * The index of the discriminant field in the outer type. This is
466 an index into the type's array of fields. If this is -1, there
467 is no discriminant, and only the default variant can be
468 considered to be selected. */
469 int discriminant_index
;
471 /* * True if this discriminant is unsigned; false if signed. This
472 comes from the type of the discriminant. */
475 /* * The variants that are controlled by this variant part. Note
476 that these will always be sorted by field number. */
477 gdb::array_view
<variant
> variants
;
481 enum dynamic_prop_kind
483 PROP_UNDEFINED
, /* Not defined. */
484 PROP_CONST
, /* Constant. */
485 PROP_ADDR_OFFSET
, /* Address offset. */
486 PROP_LOCEXPR
, /* Location expression. */
487 PROP_LOCLIST
, /* Location list. */
488 PROP_VARIANT_PARTS
, /* Variant parts. */
489 PROP_TYPE
, /* Type. */
492 union dynamic_prop_data
494 /* Storage for constant property. */
498 /* Storage for dynamic property. */
502 /* Storage of variant parts for a type. A type with variant parts
503 has all its fields "linearized" -- stored in a single field
504 array, just as if they had all been declared that way. The
505 variant parts are attached via a dynamic property, and then are
506 used to control which fields end up in the final type during
507 dynamic type resolution. */
509 const gdb::array_view
<variant_part
> *variant_parts
;
511 /* Once a variant type is resolved, we may want to be able to go
512 from the resolved type to the original type. In this case we
513 rewrite the property's kind and set this field. */
515 struct type
*original_type
;
518 /* * Used to store a dynamic property. */
522 /* Determine which field of the union dynamic_prop.data is used. */
523 enum dynamic_prop_kind kind
;
525 /* Storage for dynamic or static value. */
526 union dynamic_prop_data data
;
529 /* Compare two dynamic_prop objects for equality. dynamic_prop
530 instances are equal iff they have the same type and storage. */
531 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
533 /* Compare two dynamic_prop objects for inequality. */
534 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
539 /* * Define a type's dynamic property node kind. */
540 enum dynamic_prop_node_kind
542 /* A property providing a type's data location.
543 Evaluating this field yields to the location of an object's data. */
544 DYN_PROP_DATA_LOCATION
,
546 /* A property representing DW_AT_allocated. The presence of this attribute
547 indicates that the object of the type can be allocated/deallocated. */
550 /* A property representing DW_AT_allocated. The presence of this attribute
551 indicated that the object of the type can be associated. */
554 /* A property providing an array's byte stride. */
555 DYN_PROP_BYTE_STRIDE
,
557 /* A property holding variant parts. */
558 DYN_PROP_VARIANT_PARTS
,
560 /* A property holding the size of the type. */
564 /* * List for dynamic type attributes. */
565 struct dynamic_prop_list
567 /* The kind of dynamic prop in this node. */
568 enum dynamic_prop_node_kind prop_kind
;
570 /* The dynamic property itself. */
571 struct dynamic_prop prop
;
573 /* A pointer to the next dynamic property. */
574 struct dynamic_prop_list
*next
;
577 /* * Determine which field of the union main_type.fields[x].loc is
582 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
583 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
584 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
585 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
586 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
589 /* * A discriminant to determine which field in the
590 main_type.type_specific union is being used, if any.
592 For types such as TYPE_CODE_FLT, the use of this
593 discriminant is really redundant, as we know from the type code
594 which field is going to be used. As such, it would be possible to
595 reduce the size of this enum in order to save a bit or two for
596 other fields of struct main_type. But, since we still have extra
597 room , and for the sake of clarity and consistency, we treat all fields
598 of the union the same way. */
600 enum type_specific_kind
603 TYPE_SPECIFIC_CPLUS_STUFF
,
604 TYPE_SPECIFIC_GNAT_STUFF
,
605 TYPE_SPECIFIC_FLOATFORMAT
,
606 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
608 TYPE_SPECIFIC_SELF_TYPE
613 struct objfile
*objfile
;
614 struct gdbarch
*gdbarch
;
619 /* * Position of this field, counting in bits from start of
620 containing structure. For big-endian targets, it is the bit
621 offset to the MSB. For little-endian targets, it is the bit
622 offset to the LSB. */
629 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
630 physaddr is the location (in the target) of the static
631 field. Otherwise, physname is the mangled label of the
635 const char *physname
;
637 /* * The field location can be computed by evaluating the
638 following DWARF block. Its DATA is allocated on
639 objfile_obstack - no CU load is needed to access it. */
641 struct dwarf2_locexpr_baton
*dwarf_block
;
646 union field_location loc
;
648 /* * For a function or member type, this is 1 if the argument is
649 marked artificial. Artificial arguments should not be shown
650 to the user. For TYPE_CODE_RANGE it is set if the specific
651 bound is not defined. */
653 unsigned int artificial
: 1;
655 /* * Discriminant for union field_location. */
657 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
659 /* * Size of this field, in bits, or zero if not packed.
660 If non-zero in an array type, indicates the element size in
661 bits (used only in Ada at the moment).
662 For an unpacked field, the field's type's length
663 says how many bytes the field occupies. */
665 unsigned int bitsize
: 28;
667 /* * In a struct or union type, type of this field.
668 - In a function or member type, type of this argument.
669 - In an array type, the domain-type of the array. */
673 /* * Name of field, value or argument.
674 NULL for range bounds, array domains, and member function
682 /* * Low bound of range. */
684 struct dynamic_prop low
;
686 /* * High bound of range. */
688 struct dynamic_prop high
;
690 /* The stride value for this range. This can be stored in bits or bytes
691 based on the value of BYTE_STRIDE_P. It is optional to have a stride
692 value, if this range has no stride value defined then this will be set
693 to the constant zero. */
695 struct dynamic_prop stride
;
697 /* * The bias. Sometimes a range value is biased before storage.
698 The bias is added to the stored bits to form the true value. */
702 /* True if HIGH range bound contains the number of elements in the
703 subrange. This affects how the final high bound is computed. */
705 unsigned int flag_upper_bound_is_count
: 1;
707 /* True if LOW or/and HIGH are resolved into a static bound from
710 unsigned int flag_bound_evaluated
: 1;
712 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
714 unsigned int flag_is_byte_stride
: 1;
717 /* Compare two range_bounds objects for equality. Simply does
718 memberwise comparison. */
719 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
721 /* Compare two range_bounds objects for inequality. */
722 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
729 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
730 point to cplus_struct_default, a default static instance of a
731 struct cplus_struct_type. */
733 struct cplus_struct_type
*cplus_stuff
;
735 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
736 provides additional information. */
738 struct gnat_aux_type
*gnat_stuff
;
740 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
741 floatformat object that describes the floating-point value
742 that resides within the type. */
744 const struct floatformat
*floatformat
;
746 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
748 struct func_type
*func_stuff
;
750 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
751 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
754 struct type
*self_type
;
757 /* * Main structure representing a type in GDB.
759 This structure is space-critical. Its layout has been tweaked to
760 reduce the space used. */
764 /* * Code for kind of type. */
766 ENUM_BITFIELD(type_code
) code
: 8;
768 /* * Flags about this type. These fields appear at this location
769 because they packs nicely here. See the TYPE_* macros for
770 documentation about these fields. */
772 unsigned int flag_unsigned
: 1;
773 unsigned int flag_nosign
: 1;
774 unsigned int flag_stub
: 1;
775 unsigned int flag_target_stub
: 1;
776 unsigned int flag_static
: 1;
777 unsigned int flag_prototyped
: 1;
778 unsigned int flag_incomplete
: 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 /* * Type that is a pointer to this type.
890 NULL if no such pointer-to type is known yet.
891 The debugger may add the address of such a type
892 if it has to construct one later. */
894 struct type
*pointer_type
;
896 /* * C++: also need a reference type. */
898 struct type
*reference_type
;
900 /* * A C++ rvalue reference type added in C++11. */
902 struct type
*rvalue_reference_type
;
904 /* * Variant chain. This points to a type that differs from this
905 one only in qualifiers and length. Currently, the possible
906 qualifiers are const, volatile, code-space, data-space, and
907 address class. The length may differ only when one of the
908 address class flags are set. The variants are linked in a
909 circular ring and share MAIN_TYPE. */
913 /* * The alignment for this type. Zero means that the alignment was
914 not specified in the debug info. Note that this is stored in a
915 funny way: as the log base 2 (plus 1) of the alignment; so a
916 value of 1 means the alignment is 1, and a value of 9 means the
919 unsigned align_log2
: TYPE_ALIGN_BITS
;
921 /* * Flags specific to this instance of the type, indicating where
924 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
925 binary or-ed with the target type, with a special case for
926 address class and space class. For example if this typedef does
927 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
928 instance flags are completely inherited from the target type. No
929 qualifiers can be cleared by the typedef. See also
931 unsigned instance_flags
: 9;
933 /* * Length of storage for a value of this type. The value is the
934 expression in host bytes of what sizeof(type) would return. This
935 size includes padding. For example, an i386 extended-precision
936 floating point value really only occupies ten bytes, but most
937 ABI's declare its size to be 12 bytes, to preserve alignment.
938 A `struct type' representing such a floating-point type would
939 have a `length' value of 12, even though the last two bytes are
942 Since this field is expressed in host bytes, its value is appropriate
943 to pass to memcpy and such (it is assumed that GDB itself always runs
944 on an 8-bits addressable architecture). However, when using it for
945 target address arithmetic (e.g. adding it to a target address), the
946 type_length_units function should be used in order to get the length
947 expressed in target addressable memory units. */
951 /* * Core type, shared by a group of qualified types. */
953 struct main_type
*main_type
;
956 #define NULL_TYPE ((struct type *) 0)
961 /* * The overloaded name.
962 This is generally allocated in the objfile's obstack.
963 However stabsread.c sometimes uses malloc. */
967 /* * The number of methods with this name. */
971 /* * The list of methods. */
973 struct fn_field
*fn_fields
;
980 /* * If is_stub is clear, this is the mangled name which we can look
981 up to find the address of the method (FIXME: it would be cleaner
982 to have a pointer to the struct symbol here instead).
984 If is_stub is set, this is the portion of the mangled name which
985 specifies the arguments. For example, "ii", if there are two int
986 arguments, or "" if there are no arguments. See gdb_mangle_name
987 for the conversion from this format to the one used if is_stub is
990 const char *physname
;
992 /* * The function type for the method.
994 (This comment used to say "The return value of the method", but
995 that's wrong. The function type is expected here, i.e. something
996 with TYPE_CODE_METHOD, and *not* the return-value type). */
1000 /* * For virtual functions. First baseclass that defines this
1001 virtual function. */
1003 struct type
*fcontext
;
1007 unsigned int is_const
:1;
1008 unsigned int is_volatile
:1;
1009 unsigned int is_private
:1;
1010 unsigned int is_protected
:1;
1011 unsigned int is_artificial
:1;
1013 /* * A stub method only has some fields valid (but they are enough
1014 to reconstruct the rest of the fields). */
1016 unsigned int is_stub
:1;
1018 /* * True if this function is a constructor, false otherwise. */
1020 unsigned int is_constructor
: 1;
1022 /* * True if this function is deleted, false otherwise. */
1024 unsigned int is_deleted
: 1;
1026 /* * DW_AT_defaulted attribute for this function. The value is one
1027 of the DW_DEFAULTED constants. */
1029 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1033 unsigned int dummy
:6;
1035 /* * Index into that baseclass's virtual function table, minus 2;
1036 else if static: VOFFSET_STATIC; else: 0. */
1038 unsigned int voffset
:16;
1040 #define VOFFSET_STATIC 1
1046 /* * Unqualified name to be prefixed by owning class qualified
1051 /* * Type this typedef named NAME represents. */
1055 /* * True if this field was declared protected, false otherwise. */
1056 unsigned int is_protected
: 1;
1058 /* * True if this field was declared private, false otherwise. */
1059 unsigned int is_private
: 1;
1062 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1063 TYPE_CODE_UNION nodes. */
1065 struct cplus_struct_type
1067 /* * Number of base classes this type derives from. The
1068 baseclasses are stored in the first N_BASECLASSES fields
1069 (i.e. the `fields' field of the struct type). The only fields
1070 of struct field that are used are: type, name, loc.bitpos. */
1072 short n_baseclasses
;
1074 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1075 All access to this field must be through TYPE_VPTR_FIELDNO as one
1076 thing it does is check whether the field has been initialized.
1077 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1078 which for portability reasons doesn't initialize this field.
1079 TYPE_VPTR_FIELDNO returns -1 for this case.
1081 If -1, we were unable to find the virtual function table pointer in
1082 initial symbol reading, and get_vptr_fieldno should be called to find
1083 it if possible. get_vptr_fieldno will update this field if possible.
1084 Otherwise the value is left at -1.
1086 Unused if this type does not have virtual functions. */
1090 /* * Number of methods with unique names. All overloaded methods
1091 with the same name count only once. */
1095 /* * Number of template arguments. */
1097 unsigned short n_template_arguments
;
1099 /* * One if this struct is a dynamic class, as defined by the
1100 Itanium C++ ABI: if it requires a virtual table pointer,
1101 because it or any of its base classes have one or more virtual
1102 member functions or virtual base classes. Minus one if not
1103 dynamic. Zero if not yet computed. */
1107 /* * The calling convention for this type, fetched from the
1108 DW_AT_calling_convention attribute. The value is one of the
1111 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1113 /* * The base class which defined the virtual function table pointer. */
1115 struct type
*vptr_basetype
;
1117 /* * For derived classes, the number of base classes is given by
1118 n_baseclasses and virtual_field_bits is a bit vector containing
1119 one bit per base class. If the base class is virtual, the
1120 corresponding bit will be set.
1125 class C : public B, public virtual A {};
1127 B is a baseclass of C; A is a virtual baseclass for C.
1128 This is a C++ 2.0 language feature. */
1130 B_TYPE
*virtual_field_bits
;
1132 /* * For classes with private fields, the number of fields is
1133 given by nfields and private_field_bits is a bit vector
1134 containing one bit per field.
1136 If the field is private, the corresponding bit will be set. */
1138 B_TYPE
*private_field_bits
;
1140 /* * For classes with protected fields, the number of fields is
1141 given by nfields and protected_field_bits is a bit vector
1142 containing one bit per field.
1144 If the field is private, the corresponding bit will be set. */
1146 B_TYPE
*protected_field_bits
;
1148 /* * For classes with fields to be ignored, either this is
1149 optimized out or this field has length 0. */
1151 B_TYPE
*ignore_field_bits
;
1153 /* * For classes, structures, and unions, a description of each
1154 field, which consists of an overloaded name, followed by the
1155 types of arguments that the method expects, and then the name
1156 after it has been renamed to make it distinct.
1158 fn_fieldlists points to an array of nfn_fields of these. */
1160 struct fn_fieldlist
*fn_fieldlists
;
1162 /* * typedefs defined inside this class. typedef_field points to
1163 an array of typedef_field_count elements. */
1165 struct decl_field
*typedef_field
;
1167 unsigned typedef_field_count
;
1169 /* * The nested types defined by this type. nested_types points to
1170 an array of nested_types_count elements. */
1172 struct decl_field
*nested_types
;
1174 unsigned nested_types_count
;
1176 /* * The template arguments. This is an array with
1177 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1180 struct symbol
**template_arguments
;
1183 /* * Struct used to store conversion rankings. */
1189 /* * When two conversions are of the same type and therefore have
1190 the same rank, subrank is used to differentiate the two.
1192 Eg: Two derived-class-pointer to base-class-pointer conversions
1193 would both have base pointer conversion rank, but the
1194 conversion with the shorter distance to the ancestor is
1195 preferable. 'subrank' would be used to reflect that. */
1200 /* * Used for ranking a function for overload resolution. */
1202 typedef std::vector
<rank
> badness_vector
;
1204 /* * GNAT Ada-specific information for various Ada types. */
1206 struct gnat_aux_type
1208 /* * Parallel type used to encode information about dynamic types
1209 used in Ada (such as variant records, variable-size array,
1211 struct type
* descriptive_type
;
1214 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1218 /* * The calling convention for targets supporting multiple ABIs.
1219 Right now this is only fetched from the Dwarf-2
1220 DW_AT_calling_convention attribute. The value is one of the
1223 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1225 /* * Whether this function normally returns to its caller. It is
1226 set from the DW_AT_noreturn attribute if set on the
1227 DW_TAG_subprogram. */
1229 unsigned int is_noreturn
: 1;
1231 /* * Only those DW_TAG_call_site's in this function that have
1232 DW_AT_call_tail_call set are linked in this list. Function
1233 without its tail call list complete
1234 (DW_AT_call_all_tail_calls or its superset
1235 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1236 DW_TAG_call_site's exist in such function. */
1238 struct call_site
*tail_call_list
;
1240 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1241 contains the method. */
1243 struct type
*self_type
;
1246 /* struct call_site_parameter can be referenced in callees by several ways. */
1248 enum call_site_parameter_kind
1250 /* * Use field call_site_parameter.u.dwarf_reg. */
1251 CALL_SITE_PARAMETER_DWARF_REG
,
1253 /* * Use field call_site_parameter.u.fb_offset. */
1254 CALL_SITE_PARAMETER_FB_OFFSET
,
1256 /* * Use field call_site_parameter.u.param_offset. */
1257 CALL_SITE_PARAMETER_PARAM_OFFSET
1260 struct call_site_target
1262 union field_location loc
;
1264 /* * Discriminant for union field_location. */
1266 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1269 union call_site_parameter_u
1271 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1272 as DWARF register number, for register passed
1277 /* * Offset from the callee's frame base, for stack passed
1278 parameters. This equals offset from the caller's stack
1281 CORE_ADDR fb_offset
;
1283 /* * Offset relative to the start of this PER_CU to
1284 DW_TAG_formal_parameter which is referenced by both
1285 caller and the callee. */
1287 cu_offset param_cu_off
;
1290 struct call_site_parameter
1292 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1294 union call_site_parameter_u u
;
1296 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1298 const gdb_byte
*value
;
1301 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1302 It may be NULL if not provided by DWARF. */
1304 const gdb_byte
*data_value
;
1305 size_t data_value_size
;
1308 /* * A place where a function gets called from, represented by
1309 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1313 /* * Address of the first instruction after this call. It must be
1314 the first field as we overload core_addr_hash and core_addr_eq
1319 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1321 struct call_site
*tail_call_next
;
1323 /* * Describe DW_AT_call_target. Missing attribute uses
1324 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1326 struct call_site_target target
;
1328 /* * Size of the PARAMETER array. */
1330 unsigned parameter_count
;
1332 /* * CU of the function where the call is located. It gets used
1333 for DWARF blocks execution in the parameter array below. */
1335 struct dwarf2_per_cu_data
*per_cu
;
1337 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1339 struct call_site_parameter parameter
[1];
1342 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1343 static structure. */
1345 extern const struct cplus_struct_type cplus_struct_default
;
1347 extern void allocate_cplus_struct_type (struct type
*);
1349 #define INIT_CPLUS_SPECIFIC(type) \
1350 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1351 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1352 &cplus_struct_default)
1354 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1356 #define HAVE_CPLUS_STRUCT(type) \
1357 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1358 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1360 #define INIT_NONE_SPECIFIC(type) \
1361 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1362 TYPE_MAIN_TYPE (type)->type_specific = {})
1364 extern const struct gnat_aux_type gnat_aux_default
;
1366 extern void allocate_gnat_aux_type (struct type
*);
1368 #define INIT_GNAT_SPECIFIC(type) \
1369 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1370 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1371 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1372 /* * A macro that returns non-zero if the type-specific data should be
1373 read as "gnat-stuff". */
1374 #define HAVE_GNAT_AUX_INFO(type) \
1375 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1377 /* * True if TYPE is known to be an Ada type of some kind. */
1378 #define ADA_TYPE_P(type) \
1379 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1380 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1381 && TYPE_FIXED_INSTANCE (type)))
1383 #define INIT_FUNC_SPECIFIC(type) \
1384 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1385 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1386 TYPE_ZALLOC (type, \
1387 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1389 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1390 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1391 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
1392 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1393 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1394 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1395 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1396 #define TYPE_CHAIN(thistype) (thistype)->chain
1397 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1398 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1399 so you only have to call check_typedef once. Since allocate_value
1400 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1401 #define TYPE_LENGTH(thistype) (thistype)->length
1403 /* * Return the alignment of the type in target addressable memory
1404 units, or 0 if no alignment was specified. */
1405 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1407 /* * Return the alignment of the type in target addressable memory
1408 units, or 0 if no alignment was specified. */
1409 extern unsigned type_raw_align (struct type
*);
1411 /* * Return the alignment of the type in target addressable memory
1412 units. Return 0 if the alignment cannot be determined; but note
1413 that this makes an effort to compute the alignment even it it was
1414 not specified in the debug info. */
1415 extern unsigned type_align (struct type
*);
1417 /* * Set the alignment of the type. The alignment must be a power of
1418 2. Returns false if the given value does not fit in the available
1419 space in struct type. */
1420 extern bool set_type_align (struct type
*, ULONGEST
);
1422 /* * Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
1423 type, you need to do TYPE_CODE (check_type (this_type)). */
1424 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
1425 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
1426 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
1428 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1429 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1430 #define TYPE_LOW_BOUND(range_type) \
1431 TYPE_RANGE_DATA(range_type)->low.data.const_val
1432 #define TYPE_HIGH_BOUND(range_type) \
1433 TYPE_RANGE_DATA(range_type)->high.data.const_val
1434 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1435 (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
1436 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1437 (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
1438 #define TYPE_HIGH_BOUND_KIND(range_type) \
1439 TYPE_RANGE_DATA(range_type)->high.kind
1440 #define TYPE_LOW_BOUND_KIND(range_type) \
1441 TYPE_RANGE_DATA(range_type)->low.kind
1442 #define TYPE_BIT_STRIDE(range_type) \
1443 (TYPE_RANGE_DATA(range_type)->stride.data.const_val \
1444 * (TYPE_RANGE_DATA(range_type)->flag_is_byte_stride ? 8 : 1))
1446 /* Property accessors for the type data location. */
1447 #define TYPE_DATA_LOCATION(thistype) \
1448 get_dyn_prop (DYN_PROP_DATA_LOCATION, thistype)
1449 #define TYPE_DATA_LOCATION_BATON(thistype) \
1450 TYPE_DATA_LOCATION (thistype)->data.baton
1451 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1452 TYPE_DATA_LOCATION (thistype)->data.const_val
1453 #define TYPE_DATA_LOCATION_KIND(thistype) \
1454 TYPE_DATA_LOCATION (thistype)->kind
1455 #define TYPE_DYNAMIC_LENGTH(thistype) \
1456 get_dyn_prop (DYN_PROP_BYTE_SIZE, thistype)
1458 /* Property accessors for the type allocated/associated. */
1459 #define TYPE_ALLOCATED_PROP(thistype) \
1460 get_dyn_prop (DYN_PROP_ALLOCATED, thistype)
1461 #define TYPE_ASSOCIATED_PROP(thistype) \
1462 get_dyn_prop (DYN_PROP_ASSOCIATED, thistype)
1464 /* Attribute accessors for dynamic properties. */
1465 #define TYPE_DYN_PROP_LIST(thistype) \
1466 TYPE_MAIN_TYPE(thistype)->dyn_prop_list
1467 #define TYPE_DYN_PROP_BATON(dynprop) \
1469 #define TYPE_DYN_PROP_ADDR(dynprop) \
1470 dynprop->data.const_val
1471 #define TYPE_DYN_PROP_KIND(dynprop) \
1475 /* Accessors for struct range_bounds data attached to an array type's
1478 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1479 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1480 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1481 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1483 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1484 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1486 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1487 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1489 #define TYPE_ARRAY_BIT_STRIDE(arraytype) \
1490 (TYPE_BIT_STRIDE(TYPE_INDEX_TYPE((arraytype))))
1494 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1495 /* Do not call this, use TYPE_SELF_TYPE. */
1496 extern struct type
*internal_type_self_type (struct type
*);
1497 extern void set_type_self_type (struct type
*, struct type
*);
1499 extern int internal_type_vptr_fieldno (struct type
*);
1500 extern void set_type_vptr_fieldno (struct type
*, int);
1501 extern struct type
*internal_type_vptr_basetype (struct type
*);
1502 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1503 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1504 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1506 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1507 #define TYPE_SPECIFIC_FIELD(thistype) \
1508 TYPE_MAIN_TYPE(thistype)->type_specific_field
1509 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1510 where we're trying to print an Ada array using the C language.
1511 In that case, there is no "cplus_stuff", but the C language assumes
1512 that there is. What we do, in that case, is pretend that there is
1513 an implicit one which is the default cplus stuff. */
1514 #define TYPE_CPLUS_SPECIFIC(thistype) \
1515 (!HAVE_CPLUS_STRUCT(thistype) \
1516 ? (struct cplus_struct_type*)&cplus_struct_default \
1517 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1518 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1519 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1520 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1521 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1522 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1523 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1524 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1525 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1526 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1527 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1528 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1529 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1530 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1531 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1532 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1533 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1535 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1536 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1537 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1539 #define FIELD_TYPE(thisfld) ((thisfld).type)
1540 #define FIELD_NAME(thisfld) ((thisfld).name)
1541 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1542 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1543 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1544 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1545 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1546 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1547 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1548 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1549 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1550 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1551 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1552 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1553 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1554 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1555 #define SET_FIELD_PHYSNAME(thisfld, name) \
1556 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1557 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1558 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1559 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1560 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1561 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1562 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1563 FIELD_DWARF_BLOCK (thisfld) = (addr))
1564 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1565 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1567 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1568 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1569 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1570 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1571 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1572 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL (TYPE_FIELD (thistype, n))
1573 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1574 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1575 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1576 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1577 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1578 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1580 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1581 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1582 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1583 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1584 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1585 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1586 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1587 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1588 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1589 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1590 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1591 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1592 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1593 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1594 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1595 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1596 #define TYPE_FIELD_PRIVATE(thistype, n) \
1597 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1598 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1599 #define TYPE_FIELD_PROTECTED(thistype, n) \
1600 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1601 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1602 #define TYPE_FIELD_IGNORE(thistype, n) \
1603 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1604 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1605 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1606 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1607 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1609 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1610 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1611 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1612 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1613 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1615 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1616 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1617 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1618 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1619 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1620 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1622 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1623 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1624 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1625 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1626 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1627 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1628 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1629 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1630 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1631 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1632 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1633 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1634 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1635 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1636 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1637 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1638 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1640 /* Accessors for typedefs defined by a class. */
1641 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1642 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1643 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1644 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1645 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1646 TYPE_TYPEDEF_FIELD (thistype, n).name
1647 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1648 TYPE_TYPEDEF_FIELD (thistype, n).type
1649 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1650 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1651 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1652 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1653 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1654 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1656 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1657 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1658 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1659 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1660 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1661 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1662 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1663 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1664 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1665 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1666 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1667 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1668 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1669 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1671 #define TYPE_IS_OPAQUE(thistype) \
1672 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1673 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1674 && (TYPE_NFIELDS (thistype) == 0) \
1675 && (!HAVE_CPLUS_STRUCT (thistype) \
1676 || TYPE_NFN_FIELDS (thistype) == 0) \
1677 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1679 /* * A helper macro that returns the name of a type or "unnamed type"
1680 if the type has no name. */
1682 #define TYPE_SAFE_NAME(type) \
1683 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>"))
1685 /* * A helper macro that returns the name of an error type. If the
1686 type has a name, it is used; otherwise, a default is used. */
1688 #define TYPE_ERROR_NAME(type) \
1689 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1691 /* Given TYPE, return its floatformat. */
1692 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1696 /* Integral types. */
1698 /* Implicit size/sign (based on the architecture's ABI). */
1699 struct type
*builtin_void
;
1700 struct type
*builtin_char
;
1701 struct type
*builtin_short
;
1702 struct type
*builtin_int
;
1703 struct type
*builtin_long
;
1704 struct type
*builtin_signed_char
;
1705 struct type
*builtin_unsigned_char
;
1706 struct type
*builtin_unsigned_short
;
1707 struct type
*builtin_unsigned_int
;
1708 struct type
*builtin_unsigned_long
;
1709 struct type
*builtin_half
;
1710 struct type
*builtin_float
;
1711 struct type
*builtin_double
;
1712 struct type
*builtin_long_double
;
1713 struct type
*builtin_complex
;
1714 struct type
*builtin_double_complex
;
1715 struct type
*builtin_string
;
1716 struct type
*builtin_bool
;
1717 struct type
*builtin_long_long
;
1718 struct type
*builtin_unsigned_long_long
;
1719 struct type
*builtin_decfloat
;
1720 struct type
*builtin_decdouble
;
1721 struct type
*builtin_declong
;
1723 /* "True" character types.
1724 We use these for the '/c' print format, because c_char is just a
1725 one-byte integral type, which languages less laid back than C
1726 will print as ... well, a one-byte integral type. */
1727 struct type
*builtin_true_char
;
1728 struct type
*builtin_true_unsigned_char
;
1730 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1731 is for when an architecture needs to describe a register that has
1733 struct type
*builtin_int0
;
1734 struct type
*builtin_int8
;
1735 struct type
*builtin_uint8
;
1736 struct type
*builtin_int16
;
1737 struct type
*builtin_uint16
;
1738 struct type
*builtin_int24
;
1739 struct type
*builtin_uint24
;
1740 struct type
*builtin_int32
;
1741 struct type
*builtin_uint32
;
1742 struct type
*builtin_int64
;
1743 struct type
*builtin_uint64
;
1744 struct type
*builtin_int128
;
1745 struct type
*builtin_uint128
;
1747 /* Wide character types. */
1748 struct type
*builtin_char16
;
1749 struct type
*builtin_char32
;
1750 struct type
*builtin_wchar
;
1752 /* Pointer types. */
1754 /* * `pointer to data' type. Some target platforms use an implicitly
1755 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1756 struct type
*builtin_data_ptr
;
1758 /* * `pointer to function (returning void)' type. Harvard
1759 architectures mean that ABI function and code pointers are not
1760 interconvertible. Similarly, since ANSI, C standards have
1761 explicitly said that pointers to functions and pointers to data
1762 are not interconvertible --- that is, you can't cast a function
1763 pointer to void * and back, and expect to get the same value.
1764 However, all function pointer types are interconvertible, so void
1765 (*) () can server as a generic function pointer. */
1767 struct type
*builtin_func_ptr
;
1769 /* * `function returning pointer to function (returning void)' type.
1770 The final void return type is not significant for it. */
1772 struct type
*builtin_func_func
;
1774 /* Special-purpose types. */
1776 /* * This type is used to represent a GDB internal function. */
1778 struct type
*internal_fn
;
1780 /* * This type is used to represent an xmethod. */
1781 struct type
*xmethod
;
1784 /* * Return the type table for the specified architecture. */
1786 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1788 /* * Per-objfile types used by symbol readers. */
1792 /* Basic types based on the objfile architecture. */
1793 struct type
*builtin_void
;
1794 struct type
*builtin_char
;
1795 struct type
*builtin_short
;
1796 struct type
*builtin_int
;
1797 struct type
*builtin_long
;
1798 struct type
*builtin_long_long
;
1799 struct type
*builtin_signed_char
;
1800 struct type
*builtin_unsigned_char
;
1801 struct type
*builtin_unsigned_short
;
1802 struct type
*builtin_unsigned_int
;
1803 struct type
*builtin_unsigned_long
;
1804 struct type
*builtin_unsigned_long_long
;
1805 struct type
*builtin_half
;
1806 struct type
*builtin_float
;
1807 struct type
*builtin_double
;
1808 struct type
*builtin_long_double
;
1810 /* * This type is used to represent symbol addresses. */
1811 struct type
*builtin_core_addr
;
1813 /* * This type represents a type that was unrecognized in symbol
1815 struct type
*builtin_error
;
1817 /* * Types used for symbols with no debug information. */
1818 struct type
*nodebug_text_symbol
;
1819 struct type
*nodebug_text_gnu_ifunc_symbol
;
1820 struct type
*nodebug_got_plt_symbol
;
1821 struct type
*nodebug_data_symbol
;
1822 struct type
*nodebug_unknown_symbol
;
1823 struct type
*nodebug_tls_symbol
;
1826 /* * Return the type table for the specified objfile. */
1828 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1830 /* Explicit floating-point formats. See "floatformat.h". */
1831 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1832 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1833 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1834 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1835 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1836 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1837 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1838 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1839 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1840 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1841 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1842 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1845 /* Allocate space for storing data associated with a particular
1846 type. We ensure that the space is allocated using the same
1847 mechanism that was used to allocate the space for the type
1848 structure itself. I.e. if the type is on an objfile's
1849 objfile_obstack, then the space for data associated with that type
1850 will also be allocated on the objfile_obstack. If the type is
1851 associated with a gdbarch, then the space for data associated with that
1852 type will also be allocated on the gdbarch_obstack.
1854 If a type is not associated with neither an objfile or a gdbarch then
1855 you should not use this macro to allocate space for data, instead you
1856 should call xmalloc directly, and ensure the memory is correctly freed
1857 when it is no longer needed. */
1859 #define TYPE_ALLOC(t,size) \
1860 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
1861 ? &TYPE_OBJFILE (t)->objfile_obstack \
1862 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
1866 /* See comment on TYPE_ALLOC. */
1868 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
1870 /* Use alloc_type to allocate a type owned by an objfile. Use
1871 alloc_type_arch to allocate a type owned by an architecture. Use
1872 alloc_type_copy to allocate a type with the same owner as a
1873 pre-existing template type, no matter whether objfile or
1875 extern struct type
*alloc_type (struct objfile
*);
1876 extern struct type
*alloc_type_arch (struct gdbarch
*);
1877 extern struct type
*alloc_type_copy (const struct type
*);
1879 /* * Return the type's architecture. For types owned by an
1880 architecture, that architecture is returned. For types owned by an
1881 objfile, that objfile's architecture is returned. */
1883 extern struct gdbarch
*get_type_arch (const struct type
*);
1885 /* * This returns the target type (or NULL) of TYPE, also skipping
1888 extern struct type
*get_target_type (struct type
*type
);
1890 /* Return the equivalent of TYPE_LENGTH, but in number of target
1891 addressable memory units of the associated gdbarch instead of bytes. */
1893 extern unsigned int type_length_units (struct type
*type
);
1895 /* * Helper function to construct objfile-owned types. */
1897 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
1899 extern struct type
*init_integer_type (struct objfile
*, int, int,
1901 extern struct type
*init_character_type (struct objfile
*, int, int,
1903 extern struct type
*init_boolean_type (struct objfile
*, int, int,
1905 extern struct type
*init_float_type (struct objfile
*, int, const char *,
1906 const struct floatformat
**,
1907 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
1908 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
1909 extern struct type
*init_complex_type (const char *, struct type
*);
1910 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
1913 /* Helper functions to construct architecture-owned types. */
1914 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
1916 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
1918 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
1920 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
1922 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
1923 const struct floatformat
**);
1924 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
1925 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
1928 /* Helper functions to construct a struct or record type. An
1929 initially empty type is created using arch_composite_type().
1930 Fields are then added using append_composite_type_field*(). A union
1931 type has its size set to the largest field. A struct type has each
1932 field packed against the previous. */
1934 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1935 const char *name
, enum type_code code
);
1936 extern void append_composite_type_field (struct type
*t
, const char *name
,
1937 struct type
*field
);
1938 extern void append_composite_type_field_aligned (struct type
*t
,
1942 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
1943 struct type
*field
);
1945 /* Helper functions to construct a bit flags type. An initially empty
1946 type is created using arch_flag_type(). Flags are then added using
1947 append_flag_type_field() and append_flag_type_flag(). */
1948 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1949 const char *name
, int bit
);
1950 extern void append_flags_type_field (struct type
*type
,
1951 int start_bitpos
, int nr_bits
,
1952 struct type
*field_type
, const char *name
);
1953 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
1956 extern void make_vector_type (struct type
*array_type
);
1957 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
1959 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
1960 extern struct type
*lookup_lvalue_reference_type (struct type
*);
1961 extern struct type
*lookup_rvalue_reference_type (struct type
*);
1964 extern struct type
*make_reference_type (struct type
*, struct type
**,
1967 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
1969 extern struct type
*make_restrict_type (struct type
*);
1971 extern struct type
*make_unqualified_type (struct type
*);
1973 extern struct type
*make_atomic_type (struct type
*);
1975 extern void replace_type (struct type
*, struct type
*);
1977 extern int address_space_name_to_int (struct gdbarch
*, const char *);
1979 extern const char *address_space_int_to_name (struct gdbarch
*, int);
1981 extern struct type
*make_type_with_address_space (struct type
*type
,
1982 int space_identifier
);
1984 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
1986 extern struct type
*lookup_methodptr_type (struct type
*);
1988 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
1989 struct type
*to_type
, struct field
*args
,
1990 int nargs
, int varargs
);
1992 extern void smash_to_memberptr_type (struct type
*, struct type
*,
1995 extern void smash_to_methodptr_type (struct type
*, struct type
*);
1997 extern struct type
*allocate_stub_method (struct type
*);
1999 extern const char *type_name_or_error (struct type
*type
);
2003 /* The field of the element, or NULL if no element was found. */
2004 struct field
*field
;
2006 /* The bit offset of the element in the parent structure. */
2010 /* Given a type TYPE, lookup the field and offset of the component named
2013 TYPE can be either a struct or union, or a pointer or reference to
2014 a struct or union. If it is a pointer or reference, its target
2015 type is automatically used. Thus '.' and '->' are interchangable,
2016 as specified for the definitions of the expression element types
2017 STRUCTOP_STRUCT and STRUCTOP_PTR.
2019 If NOERR is nonzero, the returned structure will have field set to
2020 NULL if there is no component named NAME.
2022 If the component NAME is a field in an anonymous substructure of
2023 TYPE, the returned offset is a "global" offset relative to TYPE
2024 rather than an offset within the substructure. */
2026 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2028 /* Given a type TYPE, lookup the type of the component named NAME.
2030 TYPE can be either a struct or union, or a pointer or reference to
2031 a struct or union. If it is a pointer or reference, its target
2032 type is automatically used. Thus '.' and '->' are interchangable,
2033 as specified for the definitions of the expression element types
2034 STRUCTOP_STRUCT and STRUCTOP_PTR.
2036 If NOERR is nonzero, return NULL if there is no component named
2039 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2041 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2043 extern struct type
*lookup_pointer_type (struct type
*);
2045 extern struct type
*make_function_type (struct type
*, struct type
**);
2047 extern struct type
*lookup_function_type (struct type
*);
2049 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2053 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2057 extern struct type
*create_array_type_with_stride
2058 (struct type
*, struct type
*, struct type
*,
2059 struct dynamic_prop
*, unsigned int);
2061 extern struct type
*create_range_type (struct type
*, struct type
*,
2062 const struct dynamic_prop
*,
2063 const struct dynamic_prop
*,
2066 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2067 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2070 extern struct type
* create_range_type_with_stride
2071 (struct type
*result_type
, struct type
*index_type
,
2072 const struct dynamic_prop
*low_bound
,
2073 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2074 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2076 extern struct type
*create_array_type (struct type
*, struct type
*,
2079 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2081 extern struct type
*create_string_type (struct type
*, struct type
*,
2083 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2085 extern struct type
*create_set_type (struct type
*, struct type
*);
2087 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2090 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2093 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2095 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2097 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2098 ADDR specifies the location of the variable the type is bound to.
2099 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2100 static properties is returned. */
2101 extern struct type
*resolve_dynamic_type
2102 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2105 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2106 extern int is_dynamic_type (struct type
*type
);
2108 /* * Return the dynamic property of the requested KIND from TYPE's
2109 list of dynamic properties. */
2110 extern struct dynamic_prop
*get_dyn_prop
2111 (enum dynamic_prop_node_kind kind
, const struct type
*type
);
2113 /* * Given a dynamic property PROP of a given KIND, add this dynamic
2114 property to the given TYPE.
2116 This function assumes that TYPE is objfile-owned. */
2117 extern void add_dyn_prop
2118 (enum dynamic_prop_node_kind kind
, struct dynamic_prop prop
,
2121 extern void remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2124 extern struct type
*check_typedef (struct type
*);
2126 extern void check_stub_method_group (struct type
*, int);
2128 extern char *gdb_mangle_name (struct type
*, int, int);
2130 extern struct type
*lookup_typename (const struct language_defn
*,
2131 const char *, const struct block
*, int);
2133 extern struct type
*lookup_template_type (const char *, struct type
*,
2134 const struct block
*);
2136 extern int get_vptr_fieldno (struct type
*, struct type
**);
2138 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2140 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2141 LONGEST
*high_bound
);
2143 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2145 extern int class_types_same_p (const struct type
*, const struct type
*);
2147 extern int is_ancestor (struct type
*, struct type
*);
2149 extern int is_public_ancestor (struct type
*, struct type
*);
2151 extern int is_unique_ancestor (struct type
*, struct value
*);
2153 /* Overload resolution */
2155 /* * Badness if parameter list length doesn't match arg list length. */
2156 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2158 /* * Dummy badness value for nonexistent parameter positions. */
2159 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2160 /* * Badness if no conversion among types. */
2161 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2163 /* * Badness of an exact match. */
2164 extern const struct rank EXACT_MATCH_BADNESS
;
2166 /* * Badness of integral promotion. */
2167 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2168 /* * Badness of floating promotion. */
2169 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2170 /* * Badness of converting a derived class pointer
2171 to a base class pointer. */
2172 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2173 /* * Badness of integral conversion. */
2174 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2175 /* * Badness of floating conversion. */
2176 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2177 /* * Badness of integer<->floating conversions. */
2178 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2179 /* * Badness of conversion of pointer to void pointer. */
2180 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2181 /* * Badness of conversion to boolean. */
2182 extern const struct rank BOOL_CONVERSION_BADNESS
;
2183 /* * Badness of converting derived to base class. */
2184 extern const struct rank BASE_CONVERSION_BADNESS
;
2185 /* * Badness of converting from non-reference to reference. Subrank
2186 is the type of reference conversion being done. */
2187 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2188 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2189 /* * Conversion to rvalue reference. */
2190 #define REFERENCE_CONVERSION_RVALUE 1
2191 /* * Conversion to const lvalue reference. */
2192 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2194 /* * Badness of converting integer 0 to NULL pointer. */
2195 extern const struct rank NULL_POINTER_CONVERSION
;
2196 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2198 extern const struct rank CV_CONVERSION_BADNESS
;
2199 #define CV_CONVERSION_CONST 1
2200 #define CV_CONVERSION_VOLATILE 2
2202 /* Non-standard conversions allowed by the debugger */
2204 /* * Converting a pointer to an int is usually OK. */
2205 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2207 /* * Badness of converting a (non-zero) integer constant
2209 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2211 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2212 extern int compare_ranks (struct rank a
, struct rank b
);
2214 extern int compare_badness (const badness_vector
&,
2215 const badness_vector
&);
2217 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2218 gdb::array_view
<value
*> args
);
2220 extern struct rank
rank_one_type (struct type
*, struct type
*,
2223 extern void recursive_dump_type (struct type
*, int);
2225 extern int field_is_static (struct field
*);
2229 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2230 const struct value_print_options
*,
2231 int, struct ui_file
*);
2233 extern int can_dereference (struct type
*);
2235 extern int is_integral_type (struct type
*);
2237 extern int is_floating_type (struct type
*);
2239 extern int is_scalar_type (struct type
*type
);
2241 extern int is_scalar_type_recursive (struct type
*);
2243 extern int class_or_union_p (const struct type
*);
2245 extern void maintenance_print_type (const char *, int);
2247 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2249 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2251 htab_t copied_types
);
2253 extern struct type
*copy_type (const struct type
*type
);
2255 extern bool types_equal (struct type
*, struct type
*);
2257 extern bool types_deeply_equal (struct type
*, struct type
*);
2259 extern int type_not_allocated (const struct type
*type
);
2261 extern int type_not_associated (const struct type
*type
);
2263 /* * When the type includes explicit byte ordering, return that.
2264 Otherwise, the byte ordering from gdbarch_byte_order for
2265 get_type_arch is returned. */
2267 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2269 /* A flag to enable printing of debugging information of C++
2272 extern unsigned int overload_debug
;
2274 #endif /* GDBTYPES_H */