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 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
252 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
254 /* * Identify a vector type. Gcc is handling this by adding an extra
255 attribute to the array type. We slurp that in as a new flag of a
256 type. This is used only in dwarf2read.c. */
257 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
259 /* * The debugging formats (especially STABS) do not contain enough
260 information to represent all Ada types---especially those whose
261 size depends on dynamic quantities. Therefore, the GNAT Ada
262 compiler includes extra information in the form of additional type
263 definitions connected by naming conventions. This flag indicates
264 that the type is an ordinary (unencoded) GDB type that has been
265 created from the necessary run-time information, and does not need
266 further interpretation. Optionally marks ordinary, fixed-size GDB
269 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
271 /* * This debug target supports TYPE_STUB(t). In the unsupported case
272 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
273 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
274 guessed the TYPE_STUB(t) value (see dwarfread.c). */
276 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
278 /* * Not textual. By default, GDB treats all single byte integers as
279 characters (or elements of strings) unless this flag is set. */
281 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
283 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
284 address is returned by this function call. TYPE_TARGET_TYPE
285 determines the final returned function type to be presented to
288 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
290 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
291 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
292 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
294 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
295 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
296 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
298 /* * True if this type was declared using the "class" keyword. This is
299 only valid for C++ structure and enum types. If false, a structure
300 was declared as a "struct"; if true it was declared "class". For
301 enum types, this is true when "enum class" or "enum struct" was
302 used to declare the type.. */
304 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
306 /* * True if this type is a "flag" enum. A flag enum is one where all
307 the values are pairwise disjoint when "and"ed together. This
308 affects how enum values are printed. */
310 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
312 /* * Constant type. If this is set, the corresponding type has a
315 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
317 /* * Volatile type. If this is set, the corresponding type has a
318 volatile modifier. */
320 #define TYPE_VOLATILE(t) \
321 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
323 /* * Restrict type. If this is set, the corresponding type has a
324 restrict modifier. */
326 #define TYPE_RESTRICT(t) \
327 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
329 /* * Atomic type. If this is set, the corresponding type has an
332 #define TYPE_ATOMIC(t) \
333 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
335 /* * True if this type represents either an lvalue or lvalue reference type. */
337 #define TYPE_IS_REFERENCE(t) \
338 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
340 /* * True if this type is allocatable. */
341 #define TYPE_IS_ALLOCATABLE(t) \
342 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
344 /* * True if this type has variant parts. */
345 #define TYPE_HAS_VARIANT_PARTS(t) \
346 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
348 /* * True if this type has a dynamic length. */
349 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
350 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
352 /* * Instruction-space delimited type. This is for Harvard architectures
353 which have separate instruction and data address spaces (and perhaps
356 GDB usually defines a flat address space that is a superset of the
357 architecture's two (or more) address spaces, but this is an extension
358 of the architecture's model.
360 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
361 resides in instruction memory, even if its address (in the extended
362 flat address space) does not reflect this.
364 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
365 corresponding type resides in the data memory space, even if
366 this is not indicated by its (flat address space) address.
368 If neither flag is set, the default space for functions / methods
369 is instruction space, and for data objects is data memory. */
371 #define TYPE_CODE_SPACE(t) \
372 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
374 #define TYPE_DATA_SPACE(t) \
375 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
377 /* * Address class flags. Some environments provide for pointers
378 whose size is different from that of a normal pointer or address
379 types where the bits are interpreted differently than normal
380 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
381 target specific ways to represent these different types of address
384 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
385 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
386 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
387 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
388 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
389 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
390 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
391 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
393 /* * Information about a single discriminant. */
395 struct discriminant_range
397 /* * The range of values for the variant. This is an inclusive
401 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
402 is true if this should be an unsigned comparison; false for
404 bool contains (ULONGEST value
, bool is_unsigned
) const
407 return value
>= low
&& value
<= high
;
408 LONGEST valuel
= (LONGEST
) value
;
409 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
415 /* * A single variant. A variant has a list of discriminant values.
416 When the discriminator matches one of these, the variant is
417 enabled. Each variant controls zero or more fields; and may also
418 control other variant parts as well. This struct corresponds to
419 DW_TAG_variant in DWARF. */
421 struct variant
: allocate_on_obstack
423 /* * The discriminant ranges for this variant. */
424 gdb::array_view
<discriminant_range
> discriminants
;
426 /* * The fields controlled by this variant. This is inclusive on
427 the low end and exclusive on the high end. A variant may not
428 control any fields, in which case the two values will be equal.
429 These are indexes into the type's array of fields. */
433 /* * Variant parts controlled by this variant. */
434 gdb::array_view
<variant_part
> parts
;
436 /* * Return true if this is the default variant. The default
437 variant can be recognized because it has no associated
439 bool is_default () const
441 return discriminants
.empty ();
444 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
445 if this should be an unsigned comparison; false for signed. */
446 bool matches (ULONGEST value
, bool is_unsigned
) const;
449 /* * A variant part. Each variant part has an optional discriminant
450 and holds an array of variants. This struct corresponds to
451 DW_TAG_variant_part in DWARF. */
453 struct variant_part
: allocate_on_obstack
455 /* * The index of the discriminant field in the outer type. This is
456 an index into the type's array of fields. If this is -1, there
457 is no discriminant, and only the default variant can be
458 considered to be selected. */
459 int discriminant_index
;
461 /* * True if this discriminant is unsigned; false if signed. This
462 comes from the type of the discriminant. */
465 /* * The variants that are controlled by this variant part. Note
466 that these will always be sorted by field number. */
467 gdb::array_view
<variant
> variants
;
471 enum dynamic_prop_kind
473 PROP_UNDEFINED
, /* Not defined. */
474 PROP_CONST
, /* Constant. */
475 PROP_ADDR_OFFSET
, /* Address offset. */
476 PROP_LOCEXPR
, /* Location expression. */
477 PROP_LOCLIST
, /* Location list. */
478 PROP_VARIANT_PARTS
, /* Variant parts. */
479 PROP_TYPE
, /* Type. */
482 union dynamic_prop_data
484 /* Storage for constant property. */
488 /* Storage for dynamic property. */
492 /* Storage of variant parts for a type. A type with variant parts
493 has all its fields "linearized" -- stored in a single field
494 array, just as if they had all been declared that way. The
495 variant parts are attached via a dynamic property, and then are
496 used to control which fields end up in the final type during
497 dynamic type resolution. */
499 const gdb::array_view
<variant_part
> *variant_parts
;
501 /* Once a variant type is resolved, we may want to be able to go
502 from the resolved type to the original type. In this case we
503 rewrite the property's kind and set this field. */
505 struct type
*original_type
;
508 /* * Used to store a dynamic property. */
512 /* Determine which field of the union dynamic_prop.data is used. */
513 enum dynamic_prop_kind kind
;
515 /* Storage for dynamic or static value. */
516 union dynamic_prop_data data
;
519 /* Compare two dynamic_prop objects for equality. dynamic_prop
520 instances are equal iff they have the same type and storage. */
521 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
523 /* Compare two dynamic_prop objects for inequality. */
524 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
529 /* * Define a type's dynamic property node kind. */
530 enum dynamic_prop_node_kind
532 /* A property providing a type's data location.
533 Evaluating this field yields to the location of an object's data. */
534 DYN_PROP_DATA_LOCATION
,
536 /* A property representing DW_AT_allocated. The presence of this attribute
537 indicates that the object of the type can be allocated/deallocated. */
540 /* A property representing DW_AT_associated. The presence of this attribute
541 indicated that the object of the type can be associated. */
544 /* A property providing an array's byte stride. */
545 DYN_PROP_BYTE_STRIDE
,
547 /* A property holding variant parts. */
548 DYN_PROP_VARIANT_PARTS
,
550 /* A property holding the size of the type. */
554 /* * List for dynamic type attributes. */
555 struct dynamic_prop_list
557 /* The kind of dynamic prop in this node. */
558 enum dynamic_prop_node_kind prop_kind
;
560 /* The dynamic property itself. */
561 struct dynamic_prop prop
;
563 /* A pointer to the next dynamic property. */
564 struct dynamic_prop_list
*next
;
567 /* * Determine which field of the union main_type.fields[x].loc is
572 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
573 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
574 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
575 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
576 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
579 /* * A discriminant to determine which field in the
580 main_type.type_specific union is being used, if any.
582 For types such as TYPE_CODE_FLT, the use of this
583 discriminant is really redundant, as we know from the type code
584 which field is going to be used. As such, it would be possible to
585 reduce the size of this enum in order to save a bit or two for
586 other fields of struct main_type. But, since we still have extra
587 room , and for the sake of clarity and consistency, we treat all fields
588 of the union the same way. */
590 enum type_specific_kind
593 TYPE_SPECIFIC_CPLUS_STUFF
,
594 TYPE_SPECIFIC_GNAT_STUFF
,
595 TYPE_SPECIFIC_FLOATFORMAT
,
596 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
598 TYPE_SPECIFIC_SELF_TYPE
603 struct objfile
*objfile
;
604 struct gdbarch
*gdbarch
;
609 /* * Position of this field, counting in bits from start of
610 containing structure. For big-endian targets, it is the bit
611 offset to the MSB. For little-endian targets, it is the bit
612 offset to the LSB. */
619 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
620 physaddr is the location (in the target) of the static
621 field. Otherwise, physname is the mangled label of the
625 const char *physname
;
627 /* * The field location can be computed by evaluating the
628 following DWARF block. Its DATA is allocated on
629 objfile_obstack - no CU load is needed to access it. */
631 struct dwarf2_locexpr_baton
*dwarf_block
;
636 union field_location loc
;
638 /* * For a function or member type, this is 1 if the argument is
639 marked artificial. Artificial arguments should not be shown
640 to the user. For TYPE_CODE_RANGE it is set if the specific
641 bound is not defined. */
643 unsigned int artificial
: 1;
645 /* * Discriminant for union field_location. */
647 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
649 /* * Size of this field, in bits, or zero if not packed.
650 If non-zero in an array type, indicates the element size in
651 bits (used only in Ada at the moment).
652 For an unpacked field, the field's type's length
653 says how many bytes the field occupies. */
655 unsigned int bitsize
: 28;
657 /* * In a struct or union type, type of this field.
658 - In a function or member type, type of this argument.
659 - In an array type, the domain-type of the array. */
663 /* * Name of field, value or argument.
664 NULL for range bounds, array domains, and member function
672 /* * Low bound of range. */
674 struct dynamic_prop low
;
676 /* * High bound of range. */
678 struct dynamic_prop high
;
680 /* The stride value for this range. This can be stored in bits or bytes
681 based on the value of BYTE_STRIDE_P. It is optional to have a stride
682 value, if this range has no stride value defined then this will be set
683 to the constant zero. */
685 struct dynamic_prop stride
;
687 /* * The bias. Sometimes a range value is biased before storage.
688 The bias is added to the stored bits to form the true value. */
692 /* True if HIGH range bound contains the number of elements in the
693 subrange. This affects how the final high bound is computed. */
695 unsigned int flag_upper_bound_is_count
: 1;
697 /* True if LOW or/and HIGH are resolved into a static bound from
700 unsigned int flag_bound_evaluated
: 1;
702 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
704 unsigned int flag_is_byte_stride
: 1;
707 /* Compare two range_bounds objects for equality. Simply does
708 memberwise comparison. */
709 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
711 /* Compare two range_bounds objects for inequality. */
712 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
719 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
720 point to cplus_struct_default, a default static instance of a
721 struct cplus_struct_type. */
723 struct cplus_struct_type
*cplus_stuff
;
725 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
726 provides additional information. */
728 struct gnat_aux_type
*gnat_stuff
;
730 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
731 floatformat object that describes the floating-point value
732 that resides within the type. */
734 const struct floatformat
*floatformat
;
736 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
738 struct func_type
*func_stuff
;
740 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
741 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
744 struct type
*self_type
;
747 /* * Main structure representing a type in GDB.
749 This structure is space-critical. Its layout has been tweaked to
750 reduce the space used. */
754 /* * Code for kind of type. */
756 ENUM_BITFIELD(type_code
) code
: 8;
758 /* * Flags about this type. These fields appear at this location
759 because they packs nicely here. See the TYPE_* macros for
760 documentation about these fields. */
762 unsigned int flag_unsigned
: 1;
763 unsigned int flag_nosign
: 1;
764 unsigned int flag_stub
: 1;
765 unsigned int flag_target_stub
: 1;
766 unsigned int flag_prototyped
: 1;
767 unsigned int flag_varargs
: 1;
768 unsigned int flag_vector
: 1;
769 unsigned int flag_stub_supported
: 1;
770 unsigned int flag_gnu_ifunc
: 1;
771 unsigned int flag_fixed_instance
: 1;
772 unsigned int flag_objfile_owned
: 1;
773 unsigned int flag_endianity_not_default
: 1;
775 /* * True if this type was declared with "class" rather than
778 unsigned int flag_declared_class
: 1;
780 /* * True if this is an enum type with disjoint values. This
781 affects how the enum is printed. */
783 unsigned int flag_flag_enum
: 1;
785 /* * A discriminant telling us which field of the type_specific
786 union is being used for this type, if any. */
788 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
790 /* * Number of fields described for this type. This field appears
791 at this location because it packs nicely here. */
795 /* * Name of this type, or NULL if none.
797 This is used for printing only. For looking up a name, look for
798 a symbol in the VAR_DOMAIN. This is generally allocated in the
799 objfile's obstack. However coffread.c uses malloc. */
803 /* * Every type is now associated with a particular objfile, and the
804 type is allocated on the objfile_obstack for that objfile. One
805 problem however, is that there are times when gdb allocates new
806 types while it is not in the process of reading symbols from a
807 particular objfile. Fortunately, these happen when the type
808 being created is a derived type of an existing type, such as in
809 lookup_pointer_type(). So we can just allocate the new type
810 using the same objfile as the existing type, but to do this we
811 need a backpointer to the objfile from the existing type. Yes
812 this is somewhat ugly, but without major overhaul of the internal
813 type system, it can't be avoided for now. */
815 union type_owner owner
;
817 /* * For a pointer type, describes the type of object pointed to.
818 - For an array type, describes the type of the elements.
819 - For a function or method type, describes the type of the return value.
820 - For a range type, describes the type of the full range.
821 - For a complex type, describes the type of each coordinate.
822 - For a special record or union type encoding a dynamic-sized type
823 in GNAT, a memoized pointer to a corresponding static version of
825 - Unused otherwise. */
827 struct type
*target_type
;
829 /* * For structure and union types, a description of each field.
830 For set and pascal array types, there is one "field",
831 whose type is the domain type of the set or array.
832 For range types, there are two "fields",
833 the minimum and maximum values (both inclusive).
834 For enum types, each possible value is described by one "field".
835 For a function or method type, a "field" for each parameter.
836 For C++ classes, there is one field for each base class (if it is
837 a derived class) plus one field for each class data member. Member
838 functions are recorded elsewhere.
840 Using a pointer to a separate array of fields
841 allows all types to have the same size, which is useful
842 because we can allocate the space for a type before
843 we know what to put in it. */
847 struct field
*fields
;
849 /* * Union member used for range types. */
851 struct range_bounds
*bounds
;
853 /* If this is a scalar type, then this is its corresponding
855 struct type
*complex_type
;
859 /* * Slot to point to additional language-specific fields of this
862 union type_specific type_specific
;
864 /* * Contains all dynamic type properties. */
865 struct dynamic_prop_list
*dyn_prop_list
;
868 /* * Number of bits allocated for alignment. */
870 #define TYPE_ALIGN_BITS 8
872 /* * A ``struct type'' describes a particular instance of a type, with
873 some particular qualification. */
877 /* Get the type code of this type.
879 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
880 type, you need to do `check_typedef (type)->code ()`. */
881 type_code
code () const
883 return this->main_type
->code
;
886 /* Set the type code of this type. */
887 void set_code (type_code code
)
889 this->main_type
->code
= code
;
892 /* Get the name of this type. */
893 const char *name () const
895 return this->main_type
->name
;
898 /* Set the name of this type. */
899 void set_name (const char *name
)
901 this->main_type
->name
= name
;
904 /* Get the number of fields of this type. */
905 int num_fields () const
907 return this->main_type
->nfields
;
910 /* Set the number of fields of this type. */
911 void set_num_fields (int num_fields
)
913 this->main_type
->nfields
= num_fields
;
916 /* Get the fields array of this type. */
917 struct field
*fields () const
919 return this->main_type
->flds_bnds
.fields
;
922 /* Get the field at index IDX. */
923 struct field
&field (int idx
) const
925 return this->fields ()[idx
];
928 /* Set the fields array of this type. */
929 void set_fields (struct field
*fields
)
931 this->main_type
->flds_bnds
.fields
= fields
;
934 /* * Return the dynamic property of the requested KIND from this type's
935 list of dynamic properties. */
936 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
938 /* * Given a dynamic property PROP of a given KIND, add this dynamic
939 property to this type.
941 This function assumes that this type is objfile-owned. */
942 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
944 /* * Remove dynamic property of kind KIND from this type, if it exists. */
945 void remove_dyn_prop (dynamic_prop_node_kind kind
);
947 /* * Type that is a pointer to this type.
948 NULL if no such pointer-to type is known yet.
949 The debugger may add the address of such a type
950 if it has to construct one later. */
952 struct type
*pointer_type
;
954 /* * C++: also need a reference type. */
956 struct type
*reference_type
;
958 /* * A C++ rvalue reference type added in C++11. */
960 struct type
*rvalue_reference_type
;
962 /* * Variant chain. This points to a type that differs from this
963 one only in qualifiers and length. Currently, the possible
964 qualifiers are const, volatile, code-space, data-space, and
965 address class. The length may differ only when one of the
966 address class flags are set. The variants are linked in a
967 circular ring and share MAIN_TYPE. */
971 /* * The alignment for this type. Zero means that the alignment was
972 not specified in the debug info. Note that this is stored in a
973 funny way: as the log base 2 (plus 1) of the alignment; so a
974 value of 1 means the alignment is 1, and a value of 9 means the
977 unsigned align_log2
: TYPE_ALIGN_BITS
;
979 /* * Flags specific to this instance of the type, indicating where
982 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
983 binary or-ed with the target type, with a special case for
984 address class and space class. For example if this typedef does
985 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
986 instance flags are completely inherited from the target type. No
987 qualifiers can be cleared by the typedef. See also
989 unsigned instance_flags
: 9;
991 /* * Length of storage for a value of this type. The value is the
992 expression in host bytes of what sizeof(type) would return. This
993 size includes padding. For example, an i386 extended-precision
994 floating point value really only occupies ten bytes, but most
995 ABI's declare its size to be 12 bytes, to preserve alignment.
996 A `struct type' representing such a floating-point type would
997 have a `length' value of 12, even though the last two bytes are
1000 Since this field is expressed in host bytes, its value is appropriate
1001 to pass to memcpy and such (it is assumed that GDB itself always runs
1002 on an 8-bits addressable architecture). However, when using it for
1003 target address arithmetic (e.g. adding it to a target address), the
1004 type_length_units function should be used in order to get the length
1005 expressed in target addressable memory units. */
1009 /* * Core type, shared by a group of qualified types. */
1011 struct main_type
*main_type
;
1014 #define NULL_TYPE ((struct type *) 0)
1019 /* * The overloaded name.
1020 This is generally allocated in the objfile's obstack.
1021 However stabsread.c sometimes uses malloc. */
1025 /* * The number of methods with this name. */
1029 /* * The list of methods. */
1031 struct fn_field
*fn_fields
;
1038 /* * If is_stub is clear, this is the mangled name which we can look
1039 up to find the address of the method (FIXME: it would be cleaner
1040 to have a pointer to the struct symbol here instead).
1042 If is_stub is set, this is the portion of the mangled name which
1043 specifies the arguments. For example, "ii", if there are two int
1044 arguments, or "" if there are no arguments. See gdb_mangle_name
1045 for the conversion from this format to the one used if is_stub is
1048 const char *physname
;
1050 /* * The function type for the method.
1052 (This comment used to say "The return value of the method", but
1053 that's wrong. The function type is expected here, i.e. something
1054 with TYPE_CODE_METHOD, and *not* the return-value type). */
1058 /* * For virtual functions. First baseclass that defines this
1059 virtual function. */
1061 struct type
*fcontext
;
1065 unsigned int is_const
:1;
1066 unsigned int is_volatile
:1;
1067 unsigned int is_private
:1;
1068 unsigned int is_protected
:1;
1069 unsigned int is_artificial
:1;
1071 /* * A stub method only has some fields valid (but they are enough
1072 to reconstruct the rest of the fields). */
1074 unsigned int is_stub
:1;
1076 /* * True if this function is a constructor, false otherwise. */
1078 unsigned int is_constructor
: 1;
1080 /* * True if this function is deleted, false otherwise. */
1082 unsigned int is_deleted
: 1;
1084 /* * DW_AT_defaulted attribute for this function. The value is one
1085 of the DW_DEFAULTED constants. */
1087 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1091 unsigned int dummy
:6;
1093 /* * Index into that baseclass's virtual function table, minus 2;
1094 else if static: VOFFSET_STATIC; else: 0. */
1096 unsigned int voffset
:16;
1098 #define VOFFSET_STATIC 1
1104 /* * Unqualified name to be prefixed by owning class qualified
1109 /* * Type this typedef named NAME represents. */
1113 /* * True if this field was declared protected, false otherwise. */
1114 unsigned int is_protected
: 1;
1116 /* * True if this field was declared private, false otherwise. */
1117 unsigned int is_private
: 1;
1120 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1121 TYPE_CODE_UNION nodes. */
1123 struct cplus_struct_type
1125 /* * Number of base classes this type derives from. The
1126 baseclasses are stored in the first N_BASECLASSES fields
1127 (i.e. the `fields' field of the struct type). The only fields
1128 of struct field that are used are: type, name, loc.bitpos. */
1130 short n_baseclasses
;
1132 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1133 All access to this field must be through TYPE_VPTR_FIELDNO as one
1134 thing it does is check whether the field has been initialized.
1135 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1136 which for portability reasons doesn't initialize this field.
1137 TYPE_VPTR_FIELDNO returns -1 for this case.
1139 If -1, we were unable to find the virtual function table pointer in
1140 initial symbol reading, and get_vptr_fieldno should be called to find
1141 it if possible. get_vptr_fieldno will update this field if possible.
1142 Otherwise the value is left at -1.
1144 Unused if this type does not have virtual functions. */
1148 /* * Number of methods with unique names. All overloaded methods
1149 with the same name count only once. */
1153 /* * Number of template arguments. */
1155 unsigned short n_template_arguments
;
1157 /* * One if this struct is a dynamic class, as defined by the
1158 Itanium C++ ABI: if it requires a virtual table pointer,
1159 because it or any of its base classes have one or more virtual
1160 member functions or virtual base classes. Minus one if not
1161 dynamic. Zero if not yet computed. */
1165 /* * The calling convention for this type, fetched from the
1166 DW_AT_calling_convention attribute. The value is one of the
1169 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1171 /* * The base class which defined the virtual function table pointer. */
1173 struct type
*vptr_basetype
;
1175 /* * For derived classes, the number of base classes is given by
1176 n_baseclasses and virtual_field_bits is a bit vector containing
1177 one bit per base class. If the base class is virtual, the
1178 corresponding bit will be set.
1183 class C : public B, public virtual A {};
1185 B is a baseclass of C; A is a virtual baseclass for C.
1186 This is a C++ 2.0 language feature. */
1188 B_TYPE
*virtual_field_bits
;
1190 /* * For classes with private fields, the number of fields is
1191 given by nfields and private_field_bits is a bit vector
1192 containing one bit per field.
1194 If the field is private, the corresponding bit will be set. */
1196 B_TYPE
*private_field_bits
;
1198 /* * For classes with protected fields, the number of fields is
1199 given by nfields and protected_field_bits is a bit vector
1200 containing one bit per field.
1202 If the field is private, the corresponding bit will be set. */
1204 B_TYPE
*protected_field_bits
;
1206 /* * For classes with fields to be ignored, either this is
1207 optimized out or this field has length 0. */
1209 B_TYPE
*ignore_field_bits
;
1211 /* * For classes, structures, and unions, a description of each
1212 field, which consists of an overloaded name, followed by the
1213 types of arguments that the method expects, and then the name
1214 after it has been renamed to make it distinct.
1216 fn_fieldlists points to an array of nfn_fields of these. */
1218 struct fn_fieldlist
*fn_fieldlists
;
1220 /* * typedefs defined inside this class. typedef_field points to
1221 an array of typedef_field_count elements. */
1223 struct decl_field
*typedef_field
;
1225 unsigned typedef_field_count
;
1227 /* * The nested types defined by this type. nested_types points to
1228 an array of nested_types_count elements. */
1230 struct decl_field
*nested_types
;
1232 unsigned nested_types_count
;
1234 /* * The template arguments. This is an array with
1235 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1238 struct symbol
**template_arguments
;
1241 /* * Struct used to store conversion rankings. */
1247 /* * When two conversions are of the same type and therefore have
1248 the same rank, subrank is used to differentiate the two.
1250 Eg: Two derived-class-pointer to base-class-pointer conversions
1251 would both have base pointer conversion rank, but the
1252 conversion with the shorter distance to the ancestor is
1253 preferable. 'subrank' would be used to reflect that. */
1258 /* * Used for ranking a function for overload resolution. */
1260 typedef std::vector
<rank
> badness_vector
;
1262 /* * GNAT Ada-specific information for various Ada types. */
1264 struct gnat_aux_type
1266 /* * Parallel type used to encode information about dynamic types
1267 used in Ada (such as variant records, variable-size array,
1269 struct type
* descriptive_type
;
1272 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1276 /* * The calling convention for targets supporting multiple ABIs.
1277 Right now this is only fetched from the Dwarf-2
1278 DW_AT_calling_convention attribute. The value is one of the
1281 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1283 /* * Whether this function normally returns to its caller. It is
1284 set from the DW_AT_noreturn attribute if set on the
1285 DW_TAG_subprogram. */
1287 unsigned int is_noreturn
: 1;
1289 /* * Only those DW_TAG_call_site's in this function that have
1290 DW_AT_call_tail_call set are linked in this list. Function
1291 without its tail call list complete
1292 (DW_AT_call_all_tail_calls or its superset
1293 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1294 DW_TAG_call_site's exist in such function. */
1296 struct call_site
*tail_call_list
;
1298 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1299 contains the method. */
1301 struct type
*self_type
;
1304 /* struct call_site_parameter can be referenced in callees by several ways. */
1306 enum call_site_parameter_kind
1308 /* * Use field call_site_parameter.u.dwarf_reg. */
1309 CALL_SITE_PARAMETER_DWARF_REG
,
1311 /* * Use field call_site_parameter.u.fb_offset. */
1312 CALL_SITE_PARAMETER_FB_OFFSET
,
1314 /* * Use field call_site_parameter.u.param_offset. */
1315 CALL_SITE_PARAMETER_PARAM_OFFSET
1318 struct call_site_target
1320 union field_location loc
;
1322 /* * Discriminant for union field_location. */
1324 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1327 union call_site_parameter_u
1329 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1330 as DWARF register number, for register passed
1335 /* * Offset from the callee's frame base, for stack passed
1336 parameters. This equals offset from the caller's stack
1339 CORE_ADDR fb_offset
;
1341 /* * Offset relative to the start of this PER_CU to
1342 DW_TAG_formal_parameter which is referenced by both
1343 caller and the callee. */
1345 cu_offset param_cu_off
;
1348 struct call_site_parameter
1350 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1352 union call_site_parameter_u u
;
1354 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1356 const gdb_byte
*value
;
1359 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1360 It may be NULL if not provided by DWARF. */
1362 const gdb_byte
*data_value
;
1363 size_t data_value_size
;
1366 /* * A place where a function gets called from, represented by
1367 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1371 /* * Address of the first instruction after this call. It must be
1372 the first field as we overload core_addr_hash and core_addr_eq
1377 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1379 struct call_site
*tail_call_next
;
1381 /* * Describe DW_AT_call_target. Missing attribute uses
1382 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1384 struct call_site_target target
;
1386 /* * Size of the PARAMETER array. */
1388 unsigned parameter_count
;
1390 /* * CU of the function where the call is located. It gets used
1391 for DWARF blocks execution in the parameter array below. */
1393 struct dwarf2_per_cu_data
*per_cu
;
1395 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1397 struct call_site_parameter parameter
[1];
1400 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1401 static structure. */
1403 extern const struct cplus_struct_type cplus_struct_default
;
1405 extern void allocate_cplus_struct_type (struct type
*);
1407 #define INIT_CPLUS_SPECIFIC(type) \
1408 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1409 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1410 &cplus_struct_default)
1412 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1414 #define HAVE_CPLUS_STRUCT(type) \
1415 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1416 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1418 #define INIT_NONE_SPECIFIC(type) \
1419 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1420 TYPE_MAIN_TYPE (type)->type_specific = {})
1422 extern const struct gnat_aux_type gnat_aux_default
;
1424 extern void allocate_gnat_aux_type (struct type
*);
1426 #define INIT_GNAT_SPECIFIC(type) \
1427 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1428 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1429 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1430 /* * A macro that returns non-zero if the type-specific data should be
1431 read as "gnat-stuff". */
1432 #define HAVE_GNAT_AUX_INFO(type) \
1433 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1435 /* * True if TYPE is known to be an Ada type of some kind. */
1436 #define ADA_TYPE_P(type) \
1437 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1438 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1439 && TYPE_FIXED_INSTANCE (type)))
1441 #define INIT_FUNC_SPECIFIC(type) \
1442 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1443 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1444 TYPE_ZALLOC (type, \
1445 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1447 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1448 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1449 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1450 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1451 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1452 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1453 #define TYPE_CHAIN(thistype) (thistype)->chain
1454 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1455 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1456 so you only have to call check_typedef once. Since allocate_value
1457 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1458 #define TYPE_LENGTH(thistype) (thistype)->length
1460 /* * Return the alignment of the type in target addressable memory
1461 units, or 0 if no alignment was specified. */
1462 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1464 /* * Return the alignment of the type in target addressable memory
1465 units, or 0 if no alignment was specified. */
1466 extern unsigned type_raw_align (struct type
*);
1468 /* * Return the alignment of the type in target addressable memory
1469 units. Return 0 if the alignment cannot be determined; but note
1470 that this makes an effort to compute the alignment even it it was
1471 not specified in the debug info. */
1472 extern unsigned type_align (struct type
*);
1474 /* * Set the alignment of the type. The alignment must be a power of
1475 2. Returns false if the given value does not fit in the available
1476 space in struct type. */
1477 extern bool set_type_align (struct type
*, ULONGEST
);
1479 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1480 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1481 #define TYPE_LOW_BOUND(range_type) \
1482 TYPE_RANGE_DATA(range_type)->low.data.const_val
1483 #define TYPE_HIGH_BOUND(range_type) \
1484 TYPE_RANGE_DATA(range_type)->high.data.const_val
1485 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1486 (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
1487 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1488 (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
1489 #define TYPE_HIGH_BOUND_KIND(range_type) \
1490 TYPE_RANGE_DATA(range_type)->high.kind
1491 #define TYPE_LOW_BOUND_KIND(range_type) \
1492 TYPE_RANGE_DATA(range_type)->low.kind
1493 #define TYPE_BIT_STRIDE(range_type) \
1494 (TYPE_RANGE_DATA(range_type)->stride.data.const_val \
1495 * (TYPE_RANGE_DATA(range_type)->flag_is_byte_stride ? 8 : 1))
1497 /* Property accessors for the type data location. */
1498 #define TYPE_DATA_LOCATION(thistype) \
1499 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1500 #define TYPE_DATA_LOCATION_BATON(thistype) \
1501 TYPE_DATA_LOCATION (thistype)->data.baton
1502 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1503 TYPE_DATA_LOCATION (thistype)->data.const_val
1504 #define TYPE_DATA_LOCATION_KIND(thistype) \
1505 TYPE_DATA_LOCATION (thistype)->kind
1506 #define TYPE_DYNAMIC_LENGTH(thistype) \
1507 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1509 /* Property accessors for the type allocated/associated. */
1510 #define TYPE_ALLOCATED_PROP(thistype) \
1511 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1512 #define TYPE_ASSOCIATED_PROP(thistype) \
1513 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1515 /* Attribute accessors for dynamic properties. */
1516 #define TYPE_DYN_PROP_BATON(dynprop) \
1518 #define TYPE_DYN_PROP_ADDR(dynprop) \
1519 dynprop->data.const_val
1520 #define TYPE_DYN_PROP_KIND(dynprop) \
1524 /* Accessors for struct range_bounds data attached to an array type's
1527 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1528 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1529 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1530 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1532 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1533 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1535 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1536 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1538 #define TYPE_ARRAY_BIT_STRIDE(arraytype) \
1539 (TYPE_BIT_STRIDE(TYPE_INDEX_TYPE((arraytype))))
1543 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1544 /* Do not call this, use TYPE_SELF_TYPE. */
1545 extern struct type
*internal_type_self_type (struct type
*);
1546 extern void set_type_self_type (struct type
*, struct type
*);
1548 extern int internal_type_vptr_fieldno (struct type
*);
1549 extern void set_type_vptr_fieldno (struct type
*, int);
1550 extern struct type
*internal_type_vptr_basetype (struct type
*);
1551 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1552 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1553 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1555 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1556 #define TYPE_SPECIFIC_FIELD(thistype) \
1557 TYPE_MAIN_TYPE(thistype)->type_specific_field
1558 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1559 where we're trying to print an Ada array using the C language.
1560 In that case, there is no "cplus_stuff", but the C language assumes
1561 that there is. What we do, in that case, is pretend that there is
1562 an implicit one which is the default cplus stuff. */
1563 #define TYPE_CPLUS_SPECIFIC(thistype) \
1564 (!HAVE_CPLUS_STRUCT(thistype) \
1565 ? (struct cplus_struct_type*)&cplus_struct_default \
1566 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1567 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1568 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1569 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1570 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1571 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1572 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1573 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1574 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1575 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1576 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1577 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1578 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1579 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1580 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1581 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1582 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1584 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1585 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1586 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1588 #define FIELD_TYPE(thisfld) ((thisfld).type)
1589 #define FIELD_NAME(thisfld) ((thisfld).name)
1590 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1591 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1592 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1593 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1594 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1595 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1596 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1597 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1598 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1599 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1600 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1601 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1602 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1603 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1604 #define SET_FIELD_PHYSNAME(thisfld, name) \
1605 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1606 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1607 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1608 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1609 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1610 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1611 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1612 FIELD_DWARF_BLOCK (thisfld) = (addr))
1613 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1614 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1616 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE((thistype)->field (n))
1617 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1618 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1619 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1620 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1621 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1622 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1623 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1624 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1625 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1626 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1628 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1629 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1630 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1631 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1632 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1633 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1634 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1635 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1636 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1637 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1638 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1639 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1640 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1641 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1642 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1643 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1644 #define TYPE_FIELD_PRIVATE(thistype, n) \
1645 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1646 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1647 #define TYPE_FIELD_PROTECTED(thistype, n) \
1648 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1649 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1650 #define TYPE_FIELD_IGNORE(thistype, n) \
1651 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1652 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1653 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1654 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1655 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1657 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1658 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1659 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1660 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1661 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1663 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1664 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1665 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1666 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1667 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1668 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1670 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1671 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1672 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1673 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1674 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1675 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1676 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1677 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1678 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1679 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1680 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1681 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1682 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1683 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1684 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1685 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1686 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1688 /* Accessors for typedefs defined by a class. */
1689 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1690 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1691 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1692 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1693 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1694 TYPE_TYPEDEF_FIELD (thistype, n).name
1695 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1696 TYPE_TYPEDEF_FIELD (thistype, n).type
1697 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1698 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1699 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1700 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1701 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1702 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1704 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1705 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1706 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1707 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1708 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1709 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1710 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1711 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1712 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1713 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1714 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1715 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1716 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1717 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1719 #define TYPE_IS_OPAQUE(thistype) \
1720 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1721 || ((thistype)->code () == TYPE_CODE_UNION)) \
1722 && ((thistype)->num_fields () == 0) \
1723 && (!HAVE_CPLUS_STRUCT (thistype) \
1724 || TYPE_NFN_FIELDS (thistype) == 0) \
1725 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1727 /* * A helper macro that returns the name of a type or "unnamed type"
1728 if the type has no name. */
1730 #define TYPE_SAFE_NAME(type) \
1731 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1733 /* * A helper macro that returns the name of an error type. If the
1734 type has a name, it is used; otherwise, a default is used. */
1736 #define TYPE_ERROR_NAME(type) \
1737 (type->name () ? type->name () : _("<error type>"))
1739 /* Given TYPE, return its floatformat. */
1740 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1744 /* Integral types. */
1746 /* Implicit size/sign (based on the architecture's ABI). */
1747 struct type
*builtin_void
;
1748 struct type
*builtin_char
;
1749 struct type
*builtin_short
;
1750 struct type
*builtin_int
;
1751 struct type
*builtin_long
;
1752 struct type
*builtin_signed_char
;
1753 struct type
*builtin_unsigned_char
;
1754 struct type
*builtin_unsigned_short
;
1755 struct type
*builtin_unsigned_int
;
1756 struct type
*builtin_unsigned_long
;
1757 struct type
*builtin_half
;
1758 struct type
*builtin_float
;
1759 struct type
*builtin_double
;
1760 struct type
*builtin_long_double
;
1761 struct type
*builtin_complex
;
1762 struct type
*builtin_double_complex
;
1763 struct type
*builtin_string
;
1764 struct type
*builtin_bool
;
1765 struct type
*builtin_long_long
;
1766 struct type
*builtin_unsigned_long_long
;
1767 struct type
*builtin_decfloat
;
1768 struct type
*builtin_decdouble
;
1769 struct type
*builtin_declong
;
1771 /* "True" character types.
1772 We use these for the '/c' print format, because c_char is just a
1773 one-byte integral type, which languages less laid back than C
1774 will print as ... well, a one-byte integral type. */
1775 struct type
*builtin_true_char
;
1776 struct type
*builtin_true_unsigned_char
;
1778 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1779 is for when an architecture needs to describe a register that has
1781 struct type
*builtin_int0
;
1782 struct type
*builtin_int8
;
1783 struct type
*builtin_uint8
;
1784 struct type
*builtin_int16
;
1785 struct type
*builtin_uint16
;
1786 struct type
*builtin_int24
;
1787 struct type
*builtin_uint24
;
1788 struct type
*builtin_int32
;
1789 struct type
*builtin_uint32
;
1790 struct type
*builtin_int64
;
1791 struct type
*builtin_uint64
;
1792 struct type
*builtin_int128
;
1793 struct type
*builtin_uint128
;
1795 /* Wide character types. */
1796 struct type
*builtin_char16
;
1797 struct type
*builtin_char32
;
1798 struct type
*builtin_wchar
;
1800 /* Pointer types. */
1802 /* * `pointer to data' type. Some target platforms use an implicitly
1803 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1804 struct type
*builtin_data_ptr
;
1806 /* * `pointer to function (returning void)' type. Harvard
1807 architectures mean that ABI function and code pointers are not
1808 interconvertible. Similarly, since ANSI, C standards have
1809 explicitly said that pointers to functions and pointers to data
1810 are not interconvertible --- that is, you can't cast a function
1811 pointer to void * and back, and expect to get the same value.
1812 However, all function pointer types are interconvertible, so void
1813 (*) () can server as a generic function pointer. */
1815 struct type
*builtin_func_ptr
;
1817 /* * `function returning pointer to function (returning void)' type.
1818 The final void return type is not significant for it. */
1820 struct type
*builtin_func_func
;
1822 /* Special-purpose types. */
1824 /* * This type is used to represent a GDB internal function. */
1826 struct type
*internal_fn
;
1828 /* * This type is used to represent an xmethod. */
1829 struct type
*xmethod
;
1832 /* * Return the type table for the specified architecture. */
1834 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1836 /* * Per-objfile types used by symbol readers. */
1840 /* Basic types based on the objfile architecture. */
1841 struct type
*builtin_void
;
1842 struct type
*builtin_char
;
1843 struct type
*builtin_short
;
1844 struct type
*builtin_int
;
1845 struct type
*builtin_long
;
1846 struct type
*builtin_long_long
;
1847 struct type
*builtin_signed_char
;
1848 struct type
*builtin_unsigned_char
;
1849 struct type
*builtin_unsigned_short
;
1850 struct type
*builtin_unsigned_int
;
1851 struct type
*builtin_unsigned_long
;
1852 struct type
*builtin_unsigned_long_long
;
1853 struct type
*builtin_half
;
1854 struct type
*builtin_float
;
1855 struct type
*builtin_double
;
1856 struct type
*builtin_long_double
;
1858 /* * This type is used to represent symbol addresses. */
1859 struct type
*builtin_core_addr
;
1861 /* * This type represents a type that was unrecognized in symbol
1863 struct type
*builtin_error
;
1865 /* * Types used for symbols with no debug information. */
1866 struct type
*nodebug_text_symbol
;
1867 struct type
*nodebug_text_gnu_ifunc_symbol
;
1868 struct type
*nodebug_got_plt_symbol
;
1869 struct type
*nodebug_data_symbol
;
1870 struct type
*nodebug_unknown_symbol
;
1871 struct type
*nodebug_tls_symbol
;
1874 /* * Return the type table for the specified objfile. */
1876 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1878 /* Explicit floating-point formats. See "floatformat.h". */
1879 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1880 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1881 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1882 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1883 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1884 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1885 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1886 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1887 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1888 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1889 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1890 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1893 /* Allocate space for storing data associated with a particular
1894 type. We ensure that the space is allocated using the same
1895 mechanism that was used to allocate the space for the type
1896 structure itself. I.e. if the type is on an objfile's
1897 objfile_obstack, then the space for data associated with that type
1898 will also be allocated on the objfile_obstack. If the type is
1899 associated with a gdbarch, then the space for data associated with that
1900 type will also be allocated on the gdbarch_obstack.
1902 If a type is not associated with neither an objfile or a gdbarch then
1903 you should not use this macro to allocate space for data, instead you
1904 should call xmalloc directly, and ensure the memory is correctly freed
1905 when it is no longer needed. */
1907 #define TYPE_ALLOC(t,size) \
1908 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
1909 ? &TYPE_OBJFILE (t)->objfile_obstack \
1910 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
1914 /* See comment on TYPE_ALLOC. */
1916 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
1918 /* Use alloc_type to allocate a type owned by an objfile. Use
1919 alloc_type_arch to allocate a type owned by an architecture. Use
1920 alloc_type_copy to allocate a type with the same owner as a
1921 pre-existing template type, no matter whether objfile or
1923 extern struct type
*alloc_type (struct objfile
*);
1924 extern struct type
*alloc_type_arch (struct gdbarch
*);
1925 extern struct type
*alloc_type_copy (const struct type
*);
1927 /* * Return the type's architecture. For types owned by an
1928 architecture, that architecture is returned. For types owned by an
1929 objfile, that objfile's architecture is returned. */
1931 extern struct gdbarch
*get_type_arch (const struct type
*);
1933 /* * This returns the target type (or NULL) of TYPE, also skipping
1936 extern struct type
*get_target_type (struct type
*type
);
1938 /* Return the equivalent of TYPE_LENGTH, but in number of target
1939 addressable memory units of the associated gdbarch instead of bytes. */
1941 extern unsigned int type_length_units (struct type
*type
);
1943 /* * Helper function to construct objfile-owned types. */
1945 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
1947 extern struct type
*init_integer_type (struct objfile
*, int, int,
1949 extern struct type
*init_character_type (struct objfile
*, int, int,
1951 extern struct type
*init_boolean_type (struct objfile
*, int, int,
1953 extern struct type
*init_float_type (struct objfile
*, int, const char *,
1954 const struct floatformat
**,
1955 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
1956 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
1957 extern struct type
*init_complex_type (const char *, struct type
*);
1958 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
1961 /* Helper functions to construct architecture-owned types. */
1962 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
1964 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
1966 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
1968 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
1970 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
1971 const struct floatformat
**);
1972 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
1973 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
1976 /* Helper functions to construct a struct or record type. An
1977 initially empty type is created using arch_composite_type().
1978 Fields are then added using append_composite_type_field*(). A union
1979 type has its size set to the largest field. A struct type has each
1980 field packed against the previous. */
1982 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1983 const char *name
, enum type_code code
);
1984 extern void append_composite_type_field (struct type
*t
, const char *name
,
1985 struct type
*field
);
1986 extern void append_composite_type_field_aligned (struct type
*t
,
1990 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
1991 struct type
*field
);
1993 /* Helper functions to construct a bit flags type. An initially empty
1994 type is created using arch_flag_type(). Flags are then added using
1995 append_flag_type_field() and append_flag_type_flag(). */
1996 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1997 const char *name
, int bit
);
1998 extern void append_flags_type_field (struct type
*type
,
1999 int start_bitpos
, int nr_bits
,
2000 struct type
*field_type
, const char *name
);
2001 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2004 extern void make_vector_type (struct type
*array_type
);
2005 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2007 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2008 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2009 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2012 extern struct type
*make_reference_type (struct type
*, struct type
**,
2015 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2017 extern struct type
*make_restrict_type (struct type
*);
2019 extern struct type
*make_unqualified_type (struct type
*);
2021 extern struct type
*make_atomic_type (struct type
*);
2023 extern void replace_type (struct type
*, struct type
*);
2025 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2027 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2029 extern struct type
*make_type_with_address_space (struct type
*type
,
2030 int space_identifier
);
2032 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2034 extern struct type
*lookup_methodptr_type (struct type
*);
2036 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2037 struct type
*to_type
, struct field
*args
,
2038 int nargs
, int varargs
);
2040 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2043 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2045 extern struct type
*allocate_stub_method (struct type
*);
2047 extern const char *type_name_or_error (struct type
*type
);
2051 /* The field of the element, or NULL if no element was found. */
2052 struct field
*field
;
2054 /* The bit offset of the element in the parent structure. */
2058 /* Given a type TYPE, lookup the field and offset of the component named
2061 TYPE can be either a struct or union, or a pointer or reference to
2062 a struct or union. If it is a pointer or reference, its target
2063 type is automatically used. Thus '.' and '->' are interchangable,
2064 as specified for the definitions of the expression element types
2065 STRUCTOP_STRUCT and STRUCTOP_PTR.
2067 If NOERR is nonzero, the returned structure will have field set to
2068 NULL if there is no component named NAME.
2070 If the component NAME is a field in an anonymous substructure of
2071 TYPE, the returned offset is a "global" offset relative to TYPE
2072 rather than an offset within the substructure. */
2074 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2076 /* Given a type TYPE, lookup the type of the component named NAME.
2078 TYPE can be either a struct or union, or a pointer or reference to
2079 a struct or union. If it is a pointer or reference, its target
2080 type is automatically used. Thus '.' and '->' are interchangable,
2081 as specified for the definitions of the expression element types
2082 STRUCTOP_STRUCT and STRUCTOP_PTR.
2084 If NOERR is nonzero, return NULL if there is no component named
2087 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2089 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2091 extern struct type
*lookup_pointer_type (struct type
*);
2093 extern struct type
*make_function_type (struct type
*, struct type
**);
2095 extern struct type
*lookup_function_type (struct type
*);
2097 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2101 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2105 extern struct type
*create_array_type_with_stride
2106 (struct type
*, struct type
*, struct type
*,
2107 struct dynamic_prop
*, unsigned int);
2109 extern struct type
*create_range_type (struct type
*, struct type
*,
2110 const struct dynamic_prop
*,
2111 const struct dynamic_prop
*,
2114 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2115 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2118 extern struct type
* create_range_type_with_stride
2119 (struct type
*result_type
, struct type
*index_type
,
2120 const struct dynamic_prop
*low_bound
,
2121 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2122 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2124 extern struct type
*create_array_type (struct type
*, struct type
*,
2127 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2129 extern struct type
*create_string_type (struct type
*, struct type
*,
2131 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2133 extern struct type
*create_set_type (struct type
*, struct type
*);
2135 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2138 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2141 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2143 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2145 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2146 ADDR specifies the location of the variable the type is bound to.
2147 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2148 static properties is returned. */
2149 extern struct type
*resolve_dynamic_type
2150 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2153 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2154 extern int is_dynamic_type (struct type
*type
);
2156 extern struct type
*check_typedef (struct type
*);
2158 extern void check_stub_method_group (struct type
*, int);
2160 extern char *gdb_mangle_name (struct type
*, int, int);
2162 extern struct type
*lookup_typename (const struct language_defn
*,
2163 const char *, const struct block
*, int);
2165 extern struct type
*lookup_template_type (const char *, struct type
*,
2166 const struct block
*);
2168 extern int get_vptr_fieldno (struct type
*, struct type
**);
2170 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2172 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2173 LONGEST
*high_bound
);
2175 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2177 extern int class_types_same_p (const struct type
*, const struct type
*);
2179 extern int is_ancestor (struct type
*, struct type
*);
2181 extern int is_public_ancestor (struct type
*, struct type
*);
2183 extern int is_unique_ancestor (struct type
*, struct value
*);
2185 /* Overload resolution */
2187 /* * Badness if parameter list length doesn't match arg list length. */
2188 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2190 /* * Dummy badness value for nonexistent parameter positions. */
2191 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2192 /* * Badness if no conversion among types. */
2193 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2195 /* * Badness of an exact match. */
2196 extern const struct rank EXACT_MATCH_BADNESS
;
2198 /* * Badness of integral promotion. */
2199 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2200 /* * Badness of floating promotion. */
2201 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2202 /* * Badness of converting a derived class pointer
2203 to a base class pointer. */
2204 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2205 /* * Badness of integral conversion. */
2206 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2207 /* * Badness of floating conversion. */
2208 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2209 /* * Badness of integer<->floating conversions. */
2210 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2211 /* * Badness of conversion of pointer to void pointer. */
2212 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2213 /* * Badness of conversion to boolean. */
2214 extern const struct rank BOOL_CONVERSION_BADNESS
;
2215 /* * Badness of converting derived to base class. */
2216 extern const struct rank BASE_CONVERSION_BADNESS
;
2217 /* * Badness of converting from non-reference to reference. Subrank
2218 is the type of reference conversion being done. */
2219 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2220 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2221 /* * Conversion to rvalue reference. */
2222 #define REFERENCE_CONVERSION_RVALUE 1
2223 /* * Conversion to const lvalue reference. */
2224 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2226 /* * Badness of converting integer 0 to NULL pointer. */
2227 extern const struct rank NULL_POINTER_CONVERSION
;
2228 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2230 extern const struct rank CV_CONVERSION_BADNESS
;
2231 #define CV_CONVERSION_CONST 1
2232 #define CV_CONVERSION_VOLATILE 2
2234 /* Non-standard conversions allowed by the debugger */
2236 /* * Converting a pointer to an int is usually OK. */
2237 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2239 /* * Badness of converting a (non-zero) integer constant
2241 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2243 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2244 extern int compare_ranks (struct rank a
, struct rank b
);
2246 extern int compare_badness (const badness_vector
&,
2247 const badness_vector
&);
2249 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2250 gdb::array_view
<value
*> args
);
2252 extern struct rank
rank_one_type (struct type
*, struct type
*,
2255 extern void recursive_dump_type (struct type
*, int);
2257 extern int field_is_static (struct field
*);
2261 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2262 const struct value_print_options
*,
2263 int, struct ui_file
*);
2265 extern int can_dereference (struct type
*);
2267 extern int is_integral_type (struct type
*);
2269 extern int is_floating_type (struct type
*);
2271 extern int is_scalar_type (struct type
*type
);
2273 extern int is_scalar_type_recursive (struct type
*);
2275 extern int class_or_union_p (const struct type
*);
2277 extern void maintenance_print_type (const char *, int);
2279 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2281 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2283 htab_t copied_types
);
2285 extern struct type
*copy_type (const struct type
*type
);
2287 extern bool types_equal (struct type
*, struct type
*);
2289 extern bool types_deeply_equal (struct type
*, struct type
*);
2291 extern int type_not_allocated (const struct type
*type
);
2293 extern int type_not_associated (const struct type
*type
);
2295 /* * When the type includes explicit byte ordering, return that.
2296 Otherwise, the byte ordering from gdbarch_byte_order for
2297 get_type_arch is returned. */
2299 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2301 /* A flag to enable printing of debugging information of C++
2304 extern unsigned int overload_debug
;
2306 #endif /* GDBTYPES_H */