2 /* Internal type definitions for GDB.
4 Copyright (C) 1992-2020 Free Software Foundation, Inc.
6 Contributed by Cygnus Support, using pieces from other GDB modules.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #if !defined (GDBTYPES_H)
26 /* * \page gdbtypes GDB Types
28 GDB represents all the different kinds of types in programming
29 languages using a common representation defined in gdbtypes.h.
31 The main data structure is main_type; it consists of a code (such
32 as #TYPE_CODE_ENUM for enumeration types), a number of
33 generally-useful fields such as the printable name, and finally a
34 field main_type::type_specific that is a union of info specific to
35 particular languages or other special cases (such as calling
38 The available type codes are defined in enum #type_code. The enum
39 includes codes both for types that are common across a variety
40 of languages, and for types that are language-specific.
42 Most accesses to type fields go through macros such as
43 #TYPE_CODE(thistype) and #TYPE_FN_FIELD_CONST(thisfn, n). These are
44 written such that they can be used as both rvalues and lvalues.
48 #include "gdbsupport/array-view.h"
49 #include "gdbsupport/offset-type.h"
50 #include "gdbsupport/enum-flags.h"
51 #include "gdbsupport/underlying.h"
52 #include "gdbsupport/print-utils.h"
54 #include "gdb_obstack.h"
56 /* Forward declarations for prototypes. */
59 struct value_print_options
;
61 struct dwarf2_per_cu_data
;
62 struct dwarf2_per_objfile
;
64 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
65 are already DWARF-specific. */
67 /* * Offset relative to the start of its containing CU (compilation
69 DEFINE_OFFSET_TYPE (cu_offset
, unsigned int);
71 /* * Offset relative to the start of its .debug_info or .debug_types
73 DEFINE_OFFSET_TYPE (sect_offset
, uint64_t);
76 sect_offset_str (sect_offset offset
)
78 return hex_string (to_underlying (offset
));
81 /* Some macros for char-based bitfields. */
83 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
84 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
85 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
86 #define B_TYPE unsigned char
87 #define B_BYTES(x) ( 1 + ((x)>>3) )
88 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
90 /* * Different kinds of data types are distinguished by the `code'
95 TYPE_CODE_BITSTRING
= -1, /**< Deprecated */
96 TYPE_CODE_UNDEF
= 0, /**< Not used; catches errors */
97 TYPE_CODE_PTR
, /**< Pointer type */
99 /* * Array type with lower & upper bounds.
101 Regardless of the language, GDB represents multidimensional
102 array types the way C does: as arrays of arrays. So an
103 instance of a GDB array type T can always be seen as a series
104 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
107 Row-major languages like C lay out multi-dimensional arrays so
108 that incrementing the rightmost index in a subscripting
109 expression results in the smallest change in the address of the
110 element referred to. Column-major languages like Fortran lay
111 them out so that incrementing the leftmost index results in the
114 This means that, in column-major languages, working our way
115 from type to target type corresponds to working through indices
116 from right to left, not left to right. */
119 TYPE_CODE_STRUCT
, /**< C struct or Pascal record */
120 TYPE_CODE_UNION
, /**< C union or Pascal variant part */
121 TYPE_CODE_ENUM
, /**< Enumeration type */
122 TYPE_CODE_FLAGS
, /**< Bit flags type */
123 TYPE_CODE_FUNC
, /**< Function type */
124 TYPE_CODE_INT
, /**< Integer type */
126 /* * Floating type. This is *NOT* a complex type. */
129 /* * Void type. The length field specifies the length (probably
130 always one) which is used in pointer arithmetic involving
131 pointers to this type, but actually dereferencing such a
132 pointer is invalid; a void type has no length and no actual
133 representation in memory or registers. A pointer to a void
134 type is a generic pointer. */
137 TYPE_CODE_SET
, /**< Pascal sets */
138 TYPE_CODE_RANGE
, /**< Range (integers within spec'd bounds). */
140 /* * A string type which is like an array of character but prints
141 differently. It does not contain a length field as Pascal
142 strings (for many Pascals, anyway) do; if we want to deal with
143 such strings, we should use a new type code. */
146 /* * Unknown type. The length field is valid if we were able to
147 deduce that much about the type, or 0 if we don't even know
152 TYPE_CODE_METHOD
, /**< Method type */
154 /* * Pointer-to-member-function type. This describes how to access a
155 particular member function of a class (possibly a virtual
156 member function). The representation may vary between different
160 /* * Pointer-to-member type. This is the offset within a class to
161 some particular data member. The only currently supported
162 representation uses an unbiased offset, with -1 representing
163 NULL; this is used by the Itanium C++ ABI (used by GCC on all
167 TYPE_CODE_REF
, /**< C++ Reference types */
169 TYPE_CODE_RVALUE_REF
, /**< C++ rvalue reference types */
171 TYPE_CODE_CHAR
, /**< *real* character type */
173 /* * Boolean type. 0 is false, 1 is true, and other values are
174 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
178 TYPE_CODE_COMPLEX
, /**< Complex float */
182 TYPE_CODE_NAMESPACE
, /**< C++ namespace. */
184 TYPE_CODE_DECFLOAT
, /**< Decimal floating point. */
186 TYPE_CODE_MODULE
, /**< Fortran module. */
188 /* * Internal function type. */
189 TYPE_CODE_INTERNAL_FUNCTION
,
191 /* * Methods implemented in extension languages. */
195 /* * Some bits for the type's instance_flags word. See the macros
196 below for documentation on each bit. */
198 enum type_instance_flag_value
: unsigned
200 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
201 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
202 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
203 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
204 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
205 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5),
206 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
207 TYPE_INSTANCE_FLAG_RESTRICT
= (1 << 7),
208 TYPE_INSTANCE_FLAG_ATOMIC
= (1 << 8)
211 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value
, type_instance_flags
);
213 /* * A compiler may supply dwarf instrumentation
214 that indicates the desired endian interpretation of the variable
215 differs from the native endian representation. */
217 #define TYPE_ENDIANITY_NOT_DEFAULT(t) (TYPE_MAIN_TYPE (t)->flag_endianity_not_default)
219 /* * This appears in a type's flags word if it is a stub type (e.g.,
220 if someone referenced a type that wasn't defined in a source file
221 via (struct sir_not_appearing_in_this_film *)). */
223 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
225 /* * The target type of this type is a stub type, and this type needs
226 to be updated if it gets un-stubbed in check_typedef. Used for
227 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
228 based on the TYPE_LENGTH of the target type. Also, set for
229 TYPE_CODE_TYPEDEF. */
231 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
233 /* * This is a function type which appears to have a prototype. We
234 need this for function calls in order to tell us if it's necessary
235 to coerce the args, or to just do the standard conversions. This
236 is used with a short field. */
238 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
240 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
243 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
245 /* * Identify a vector type. Gcc is handling this by adding an extra
246 attribute to the array type. We slurp that in as a new flag of a
247 type. This is used only in dwarf2read.c. */
248 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
250 /* * The debugging formats (especially STABS) do not contain enough
251 information to represent all Ada types---especially those whose
252 size depends on dynamic quantities. Therefore, the GNAT Ada
253 compiler includes extra information in the form of additional type
254 definitions connected by naming conventions. This flag indicates
255 that the type is an ordinary (unencoded) GDB type that has been
256 created from the necessary run-time information, and does not need
257 further interpretation. Optionally marks ordinary, fixed-size GDB
260 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
262 /* * This debug target supports TYPE_STUB(t). In the unsupported case
263 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
264 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
265 guessed the TYPE_STUB(t) value (see dwarfread.c). */
267 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
269 /* * Not textual. By default, GDB treats all single byte integers as
270 characters (or elements of strings) unless this flag is set. */
272 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
274 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
275 address is returned by this function call. TYPE_TARGET_TYPE
276 determines the final returned function type to be presented to
279 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
281 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
282 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
283 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
285 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
286 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
287 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
289 /* * True if this type was declared using the "class" keyword. This is
290 only valid for C++ structure and enum types. If false, a structure
291 was declared as a "struct"; if true it was declared "class". For
292 enum types, this is true when "enum class" or "enum struct" was
293 used to declare the type.. */
295 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
297 /* * True if this type is a "flag" enum. A flag enum is one where all
298 the values are pairwise disjoint when "and"ed together. This
299 affects how enum values are printed. */
301 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
303 /* * Constant type. If this is set, the corresponding type has a
306 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
308 /* * Volatile type. If this is set, the corresponding type has a
309 volatile modifier. */
311 #define TYPE_VOLATILE(t) \
312 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
314 /* * Restrict type. If this is set, the corresponding type has a
315 restrict modifier. */
317 #define TYPE_RESTRICT(t) \
318 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
320 /* * Atomic type. If this is set, the corresponding type has an
323 #define TYPE_ATOMIC(t) \
324 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
326 /* * True if this type represents either an lvalue or lvalue reference type. */
328 #define TYPE_IS_REFERENCE(t) \
329 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
331 /* * True if this type is allocatable. */
332 #define TYPE_IS_ALLOCATABLE(t) \
333 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
335 /* * True if this type has variant parts. */
336 #define TYPE_HAS_VARIANT_PARTS(t) \
337 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
339 /* * True if this type has a dynamic length. */
340 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
341 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
343 /* * Instruction-space delimited type. This is for Harvard architectures
344 which have separate instruction and data address spaces (and perhaps
347 GDB usually defines a flat address space that is a superset of the
348 architecture's two (or more) address spaces, but this is an extension
349 of the architecture's model.
351 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
352 resides in instruction memory, even if its address (in the extended
353 flat address space) does not reflect this.
355 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
356 corresponding type resides in the data memory space, even if
357 this is not indicated by its (flat address space) address.
359 If neither flag is set, the default space for functions / methods
360 is instruction space, and for data objects is data memory. */
362 #define TYPE_CODE_SPACE(t) \
363 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
365 #define TYPE_DATA_SPACE(t) \
366 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
368 /* * Address class flags. Some environments provide for pointers
369 whose size is different from that of a normal pointer or address
370 types where the bits are interpreted differently than normal
371 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
372 target specific ways to represent these different types of address
375 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
376 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
377 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
378 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
379 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
380 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
381 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
382 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
384 /* * Information about a single discriminant. */
386 struct discriminant_range
388 /* * The range of values for the variant. This is an inclusive
392 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
393 is true if this should be an unsigned comparison; false for
395 bool contains (ULONGEST value
, bool is_unsigned
) const
398 return value
>= low
&& value
<= high
;
399 LONGEST valuel
= (LONGEST
) value
;
400 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
406 /* * A single variant. A variant has a list of discriminant values.
407 When the discriminator matches one of these, the variant is
408 enabled. Each variant controls zero or more fields; and may also
409 control other variant parts as well. This struct corresponds to
410 DW_TAG_variant in DWARF. */
412 struct variant
: allocate_on_obstack
414 /* * The discriminant ranges for this variant. */
415 gdb::array_view
<discriminant_range
> discriminants
;
417 /* * The fields controlled by this variant. This is inclusive on
418 the low end and exclusive on the high end. A variant may not
419 control any fields, in which case the two values will be equal.
420 These are indexes into the type's array of fields. */
424 /* * Variant parts controlled by this variant. */
425 gdb::array_view
<variant_part
> parts
;
427 /* * Return true if this is the default variant. The default
428 variant can be recognized because it has no associated
430 bool is_default () const
432 return discriminants
.empty ();
435 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
436 if this should be an unsigned comparison; false for signed. */
437 bool matches (ULONGEST value
, bool is_unsigned
) const;
440 /* * A variant part. Each variant part has an optional discriminant
441 and holds an array of variants. This struct corresponds to
442 DW_TAG_variant_part in DWARF. */
444 struct variant_part
: allocate_on_obstack
446 /* * The index of the discriminant field in the outer type. This is
447 an index into the type's array of fields. If this is -1, there
448 is no discriminant, and only the default variant can be
449 considered to be selected. */
450 int discriminant_index
;
452 /* * True if this discriminant is unsigned; false if signed. This
453 comes from the type of the discriminant. */
456 /* * The variants that are controlled by this variant part. Note
457 that these will always be sorted by field number. */
458 gdb::array_view
<variant
> variants
;
462 enum dynamic_prop_kind
464 PROP_UNDEFINED
, /* Not defined. */
465 PROP_CONST
, /* Constant. */
466 PROP_ADDR_OFFSET
, /* Address offset. */
467 PROP_LOCEXPR
, /* Location expression. */
468 PROP_LOCLIST
, /* Location list. */
469 PROP_VARIANT_PARTS
, /* Variant parts. */
470 PROP_TYPE
, /* Type. */
473 union dynamic_prop_data
475 /* Storage for constant property. */
479 /* Storage for dynamic property. */
483 /* Storage of variant parts for a type. A type with variant parts
484 has all its fields "linearized" -- stored in a single field
485 array, just as if they had all been declared that way. The
486 variant parts are attached via a dynamic property, and then are
487 used to control which fields end up in the final type during
488 dynamic type resolution. */
490 const gdb::array_view
<variant_part
> *variant_parts
;
492 /* Once a variant type is resolved, we may want to be able to go
493 from the resolved type to the original type. In this case we
494 rewrite the property's kind and set this field. */
496 struct type
*original_type
;
499 /* * Used to store a dynamic property. */
503 dynamic_prop_kind
kind () const
508 void set_undefined ()
510 m_kind
= PROP_UNDEFINED
;
513 LONGEST
const_val () const
515 gdb_assert (m_kind
== PROP_CONST
);
517 return m_data
.const_val
;
520 void set_const_val (LONGEST const_val
)
523 m_data
.const_val
= const_val
;
528 gdb_assert (m_kind
== PROP_LOCEXPR
529 || m_kind
== PROP_LOCLIST
530 || m_kind
== PROP_ADDR_OFFSET
);
535 void set_locexpr (void *baton
)
537 m_kind
= PROP_LOCEXPR
;
538 m_data
.baton
= baton
;
541 void set_loclist (void *baton
)
543 m_kind
= PROP_LOCLIST
;
544 m_data
.baton
= baton
;
547 void set_addr_offset (void *baton
)
549 m_kind
= PROP_ADDR_OFFSET
;
550 m_data
.baton
= baton
;
553 const gdb::array_view
<variant_part
> *variant_parts () const
555 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
557 return m_data
.variant_parts
;
560 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
562 m_kind
= PROP_VARIANT_PARTS
;
563 m_data
.variant_parts
= variant_parts
;
566 struct type
*original_type () const
568 gdb_assert (m_kind
== PROP_TYPE
);
570 return m_data
.original_type
;
573 void set_original_type (struct type
*original_type
)
576 m_data
.original_type
= original_type
;
579 /* Determine which field of the union dynamic_prop.data is used. */
580 enum dynamic_prop_kind m_kind
;
582 /* Storage for dynamic or static value. */
583 union dynamic_prop_data m_data
;
586 /* Compare two dynamic_prop objects for equality. dynamic_prop
587 instances are equal iff they have the same type and storage. */
588 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
590 /* Compare two dynamic_prop objects for inequality. */
591 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
596 /* * Define a type's dynamic property node kind. */
597 enum dynamic_prop_node_kind
599 /* A property providing a type's data location.
600 Evaluating this field yields to the location of an object's data. */
601 DYN_PROP_DATA_LOCATION
,
603 /* A property representing DW_AT_allocated. The presence of this attribute
604 indicates that the object of the type can be allocated/deallocated. */
607 /* A property representing DW_AT_associated. The presence of this attribute
608 indicated that the object of the type can be associated. */
611 /* A property providing an array's byte stride. */
612 DYN_PROP_BYTE_STRIDE
,
614 /* A property holding variant parts. */
615 DYN_PROP_VARIANT_PARTS
,
617 /* A property holding the size of the type. */
621 /* * List for dynamic type attributes. */
622 struct dynamic_prop_list
624 /* The kind of dynamic prop in this node. */
625 enum dynamic_prop_node_kind prop_kind
;
627 /* The dynamic property itself. */
628 struct dynamic_prop prop
;
630 /* A pointer to the next dynamic property. */
631 struct dynamic_prop_list
*next
;
634 /* * Determine which field of the union main_type.fields[x].loc is
639 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
640 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
641 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
642 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
643 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
646 /* * A discriminant to determine which field in the
647 main_type.type_specific union is being used, if any.
649 For types such as TYPE_CODE_FLT, the use of this
650 discriminant is really redundant, as we know from the type code
651 which field is going to be used. As such, it would be possible to
652 reduce the size of this enum in order to save a bit or two for
653 other fields of struct main_type. But, since we still have extra
654 room , and for the sake of clarity and consistency, we treat all fields
655 of the union the same way. */
657 enum type_specific_kind
660 TYPE_SPECIFIC_CPLUS_STUFF
,
661 TYPE_SPECIFIC_GNAT_STUFF
,
662 TYPE_SPECIFIC_FLOATFORMAT
,
663 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
665 TYPE_SPECIFIC_SELF_TYPE
670 struct objfile
*objfile
;
671 struct gdbarch
*gdbarch
;
676 /* * Position of this field, counting in bits from start of
677 containing structure. For big-endian targets, it is the bit
678 offset to the MSB. For little-endian targets, it is the bit
679 offset to the LSB. */
686 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
687 physaddr is the location (in the target) of the static
688 field. Otherwise, physname is the mangled label of the
692 const char *physname
;
694 /* * The field location can be computed by evaluating the
695 following DWARF block. Its DATA is allocated on
696 objfile_obstack - no CU load is needed to access it. */
698 struct dwarf2_locexpr_baton
*dwarf_block
;
703 struct type
*type () const
708 void set_type (struct type
*type
)
713 union field_location loc
;
715 /* * For a function or member type, this is 1 if the argument is
716 marked artificial. Artificial arguments should not be shown
717 to the user. For TYPE_CODE_RANGE it is set if the specific
718 bound is not defined. */
720 unsigned int artificial
: 1;
722 /* * Discriminant for union field_location. */
724 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
726 /* * Size of this field, in bits, or zero if not packed.
727 If non-zero in an array type, indicates the element size in
728 bits (used only in Ada at the moment).
729 For an unpacked field, the field's type's length
730 says how many bytes the field occupies. */
732 unsigned int bitsize
: 28;
734 /* * In a struct or union type, type of this field.
735 - In a function or member type, type of this argument.
736 - In an array type, the domain-type of the array. */
740 /* * Name of field, value or argument.
741 NULL for range bounds, array domains, and member function
749 ULONGEST
bit_stride () const
751 if (this->flag_is_byte_stride
)
752 return this->stride
.const_val () * 8;
754 return this->stride
.const_val ();
757 /* * Low bound of range. */
759 struct dynamic_prop low
;
761 /* * High bound of range. */
763 struct dynamic_prop high
;
765 /* The stride value for this range. This can be stored in bits or bytes
766 based on the value of BYTE_STRIDE_P. It is optional to have a stride
767 value, if this range has no stride value defined then this will be set
768 to the constant zero. */
770 struct dynamic_prop stride
;
772 /* * The bias. Sometimes a range value is biased before storage.
773 The bias is added to the stored bits to form the true value. */
777 /* True if HIGH range bound contains the number of elements in the
778 subrange. This affects how the final high bound is computed. */
780 unsigned int flag_upper_bound_is_count
: 1;
782 /* True if LOW or/and HIGH are resolved into a static bound from
785 unsigned int flag_bound_evaluated
: 1;
787 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
789 unsigned int flag_is_byte_stride
: 1;
792 /* Compare two range_bounds objects for equality. Simply does
793 memberwise comparison. */
794 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
796 /* Compare two range_bounds objects for inequality. */
797 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
804 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
805 point to cplus_struct_default, a default static instance of a
806 struct cplus_struct_type. */
808 struct cplus_struct_type
*cplus_stuff
;
810 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
811 provides additional information. */
813 struct gnat_aux_type
*gnat_stuff
;
815 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
816 floatformat object that describes the floating-point value
817 that resides within the type. */
819 const struct floatformat
*floatformat
;
821 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
823 struct func_type
*func_stuff
;
825 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
826 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
829 struct type
*self_type
;
832 /* * Main structure representing a type in GDB.
834 This structure is space-critical. Its layout has been tweaked to
835 reduce the space used. */
839 /* * Code for kind of type. */
841 ENUM_BITFIELD(type_code
) code
: 8;
843 /* * Flags about this type. These fields appear at this location
844 because they packs nicely here. See the TYPE_* macros for
845 documentation about these fields. */
847 unsigned int m_flag_unsigned
: 1;
848 unsigned int m_flag_nosign
: 1;
849 unsigned int flag_stub
: 1;
850 unsigned int flag_target_stub
: 1;
851 unsigned int flag_prototyped
: 1;
852 unsigned int flag_varargs
: 1;
853 unsigned int flag_vector
: 1;
854 unsigned int flag_stub_supported
: 1;
855 unsigned int flag_gnu_ifunc
: 1;
856 unsigned int flag_fixed_instance
: 1;
857 unsigned int flag_objfile_owned
: 1;
858 unsigned int flag_endianity_not_default
: 1;
860 /* * True if this type was declared with "class" rather than
863 unsigned int flag_declared_class
: 1;
865 /* * True if this is an enum type with disjoint values. This
866 affects how the enum is printed. */
868 unsigned int flag_flag_enum
: 1;
870 /* * A discriminant telling us which field of the type_specific
871 union is being used for this type, if any. */
873 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
875 /* * Number of fields described for this type. This field appears
876 at this location because it packs nicely here. */
880 /* * Name of this type, or NULL if none.
882 This is used for printing only. For looking up a name, look for
883 a symbol in the VAR_DOMAIN. This is generally allocated in the
884 objfile's obstack. However coffread.c uses malloc. */
888 /* * Every type is now associated with a particular objfile, and the
889 type is allocated on the objfile_obstack for that objfile. One
890 problem however, is that there are times when gdb allocates new
891 types while it is not in the process of reading symbols from a
892 particular objfile. Fortunately, these happen when the type
893 being created is a derived type of an existing type, such as in
894 lookup_pointer_type(). So we can just allocate the new type
895 using the same objfile as the existing type, but to do this we
896 need a backpointer to the objfile from the existing type. Yes
897 this is somewhat ugly, but without major overhaul of the internal
898 type system, it can't be avoided for now. */
900 union type_owner owner
;
902 /* * For a pointer type, describes the type of object pointed to.
903 - For an array type, describes the type of the elements.
904 - For a function or method type, describes the type of the return value.
905 - For a range type, describes the type of the full range.
906 - For a complex type, describes the type of each coordinate.
907 - For a special record or union type encoding a dynamic-sized type
908 in GNAT, a memoized pointer to a corresponding static version of
910 - Unused otherwise. */
912 struct type
*target_type
;
914 /* * For structure and union types, a description of each field.
915 For set and pascal array types, there is one "field",
916 whose type is the domain type of the set or array.
917 For range types, there are two "fields",
918 the minimum and maximum values (both inclusive).
919 For enum types, each possible value is described by one "field".
920 For a function or method type, a "field" for each parameter.
921 For C++ classes, there is one field for each base class (if it is
922 a derived class) plus one field for each class data member. Member
923 functions are recorded elsewhere.
925 Using a pointer to a separate array of fields
926 allows all types to have the same size, which is useful
927 because we can allocate the space for a type before
928 we know what to put in it. */
932 struct field
*fields
;
934 /* * Union member used for range types. */
936 struct range_bounds
*bounds
;
938 /* If this is a scalar type, then this is its corresponding
940 struct type
*complex_type
;
944 /* * Slot to point to additional language-specific fields of this
947 union type_specific type_specific
;
949 /* * Contains all dynamic type properties. */
950 struct dynamic_prop_list
*dyn_prop_list
;
953 /* * Number of bits allocated for alignment. */
955 #define TYPE_ALIGN_BITS 8
957 /* * A ``struct type'' describes a particular instance of a type, with
958 some particular qualification. */
962 /* Get the type code of this type.
964 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
965 type, you need to do `check_typedef (type)->code ()`. */
966 type_code
code () const
968 return this->main_type
->code
;
971 /* Set the type code of this type. */
972 void set_code (type_code code
)
974 this->main_type
->code
= code
;
977 /* Get the name of this type. */
978 const char *name () const
980 return this->main_type
->name
;
983 /* Set the name of this type. */
984 void set_name (const char *name
)
986 this->main_type
->name
= name
;
989 /* Get the number of fields of this type. */
990 int num_fields () const
992 return this->main_type
->nfields
;
995 /* Set the number of fields of this type. */
996 void set_num_fields (int num_fields
)
998 this->main_type
->nfields
= num_fields
;
1001 /* Get the fields array of this type. */
1002 struct field
*fields () const
1004 return this->main_type
->flds_bnds
.fields
;
1007 /* Get the field at index IDX. */
1008 struct field
&field (int idx
) const
1010 return this->fields ()[idx
];
1013 /* Set the fields array of this type. */
1014 void set_fields (struct field
*fields
)
1016 this->main_type
->flds_bnds
.fields
= fields
;
1019 type
*index_type () const
1021 return this->field (0).type ();
1024 void set_index_type (type
*index_type
)
1026 this->field (0).set_type (index_type
);
1029 /* Get the bounds bounds of this type. The type must be a range type. */
1030 range_bounds
*bounds () const
1032 switch (this->code ())
1034 case TYPE_CODE_RANGE
:
1035 return this->main_type
->flds_bnds
.bounds
;
1037 case TYPE_CODE_ARRAY
:
1038 case TYPE_CODE_STRING
:
1039 return this->index_type ()->bounds ();
1042 gdb_assert_not_reached
1043 ("type::bounds called on type with invalid code");
1047 /* Set the bounds of this type. The type must be a range type. */
1048 void set_bounds (range_bounds
*bounds
)
1050 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1052 this->main_type
->flds_bnds
.bounds
= bounds
;
1055 ULONGEST
bit_stride () const
1057 return this->bounds ()->bit_stride ();
1060 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1061 the type is signed (unless TYPE_NOSIGN is set). */
1063 bool is_unsigned () const
1065 return this->main_type
->m_flag_unsigned
;
1068 void set_is_unsigned (bool is_unsigned
)
1070 this->main_type
->m_flag_unsigned
= is_unsigned
;
1073 /* No sign for this type. In C++, "char", "signed char", and
1074 "unsigned char" are distinct types; so we need an extra flag to
1075 indicate the absence of a sign! */
1077 bool has_no_signedness () const
1079 return this->main_type
->m_flag_nosign
;
1082 void set_has_no_signedness (bool has_no_signedness
)
1084 this->main_type
->m_flag_nosign
= has_no_signedness
;
1087 /* * Return the dynamic property of the requested KIND from this type's
1088 list of dynamic properties. */
1089 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1091 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1092 property to this type.
1094 This function assumes that this type is objfile-owned. */
1095 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1097 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1098 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1100 /* * Type that is a pointer to this type.
1101 NULL if no such pointer-to type is known yet.
1102 The debugger may add the address of such a type
1103 if it has to construct one later. */
1105 struct type
*pointer_type
;
1107 /* * C++: also need a reference type. */
1109 struct type
*reference_type
;
1111 /* * A C++ rvalue reference type added in C++11. */
1113 struct type
*rvalue_reference_type
;
1115 /* * Variant chain. This points to a type that differs from this
1116 one only in qualifiers and length. Currently, the possible
1117 qualifiers are const, volatile, code-space, data-space, and
1118 address class. The length may differ only when one of the
1119 address class flags are set. The variants are linked in a
1120 circular ring and share MAIN_TYPE. */
1124 /* * The alignment for this type. Zero means that the alignment was
1125 not specified in the debug info. Note that this is stored in a
1126 funny way: as the log base 2 (plus 1) of the alignment; so a
1127 value of 1 means the alignment is 1, and a value of 9 means the
1128 alignment is 256. */
1130 unsigned align_log2
: TYPE_ALIGN_BITS
;
1132 /* * Flags specific to this instance of the type, indicating where
1135 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1136 binary or-ed with the target type, with a special case for
1137 address class and space class. For example if this typedef does
1138 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1139 instance flags are completely inherited from the target type. No
1140 qualifiers can be cleared by the typedef. See also
1142 unsigned instance_flags
: 9;
1144 /* * Length of storage for a value of this type. The value is the
1145 expression in host bytes of what sizeof(type) would return. This
1146 size includes padding. For example, an i386 extended-precision
1147 floating point value really only occupies ten bytes, but most
1148 ABI's declare its size to be 12 bytes, to preserve alignment.
1149 A `struct type' representing such a floating-point type would
1150 have a `length' value of 12, even though the last two bytes are
1153 Since this field is expressed in host bytes, its value is appropriate
1154 to pass to memcpy and such (it is assumed that GDB itself always runs
1155 on an 8-bits addressable architecture). However, when using it for
1156 target address arithmetic (e.g. adding it to a target address), the
1157 type_length_units function should be used in order to get the length
1158 expressed in target addressable memory units. */
1162 /* * Core type, shared by a group of qualified types. */
1164 struct main_type
*main_type
;
1170 /* * The overloaded name.
1171 This is generally allocated in the objfile's obstack.
1172 However stabsread.c sometimes uses malloc. */
1176 /* * The number of methods with this name. */
1180 /* * The list of methods. */
1182 struct fn_field
*fn_fields
;
1189 /* * If is_stub is clear, this is the mangled name which we can look
1190 up to find the address of the method (FIXME: it would be cleaner
1191 to have a pointer to the struct symbol here instead).
1193 If is_stub is set, this is the portion of the mangled name which
1194 specifies the arguments. For example, "ii", if there are two int
1195 arguments, or "" if there are no arguments. See gdb_mangle_name
1196 for the conversion from this format to the one used if is_stub is
1199 const char *physname
;
1201 /* * The function type for the method.
1203 (This comment used to say "The return value of the method", but
1204 that's wrong. The function type is expected here, i.e. something
1205 with TYPE_CODE_METHOD, and *not* the return-value type). */
1209 /* * For virtual functions. First baseclass that defines this
1210 virtual function. */
1212 struct type
*fcontext
;
1216 unsigned int is_const
:1;
1217 unsigned int is_volatile
:1;
1218 unsigned int is_private
:1;
1219 unsigned int is_protected
:1;
1220 unsigned int is_artificial
:1;
1222 /* * A stub method only has some fields valid (but they are enough
1223 to reconstruct the rest of the fields). */
1225 unsigned int is_stub
:1;
1227 /* * True if this function is a constructor, false otherwise. */
1229 unsigned int is_constructor
: 1;
1231 /* * True if this function is deleted, false otherwise. */
1233 unsigned int is_deleted
: 1;
1235 /* * DW_AT_defaulted attribute for this function. The value is one
1236 of the DW_DEFAULTED constants. */
1238 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1242 unsigned int dummy
:6;
1244 /* * Index into that baseclass's virtual function table, minus 2;
1245 else if static: VOFFSET_STATIC; else: 0. */
1247 unsigned int voffset
:16;
1249 #define VOFFSET_STATIC 1
1255 /* * Unqualified name to be prefixed by owning class qualified
1260 /* * Type this typedef named NAME represents. */
1264 /* * True if this field was declared protected, false otherwise. */
1265 unsigned int is_protected
: 1;
1267 /* * True if this field was declared private, false otherwise. */
1268 unsigned int is_private
: 1;
1271 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1272 TYPE_CODE_UNION nodes. */
1274 struct cplus_struct_type
1276 /* * Number of base classes this type derives from. The
1277 baseclasses are stored in the first N_BASECLASSES fields
1278 (i.e. the `fields' field of the struct type). The only fields
1279 of struct field that are used are: type, name, loc.bitpos. */
1281 short n_baseclasses
;
1283 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1284 All access to this field must be through TYPE_VPTR_FIELDNO as one
1285 thing it does is check whether the field has been initialized.
1286 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1287 which for portability reasons doesn't initialize this field.
1288 TYPE_VPTR_FIELDNO returns -1 for this case.
1290 If -1, we were unable to find the virtual function table pointer in
1291 initial symbol reading, and get_vptr_fieldno should be called to find
1292 it if possible. get_vptr_fieldno will update this field if possible.
1293 Otherwise the value is left at -1.
1295 Unused if this type does not have virtual functions. */
1299 /* * Number of methods with unique names. All overloaded methods
1300 with the same name count only once. */
1304 /* * Number of template arguments. */
1306 unsigned short n_template_arguments
;
1308 /* * One if this struct is a dynamic class, as defined by the
1309 Itanium C++ ABI: if it requires a virtual table pointer,
1310 because it or any of its base classes have one or more virtual
1311 member functions or virtual base classes. Minus one if not
1312 dynamic. Zero if not yet computed. */
1316 /* * The calling convention for this type, fetched from the
1317 DW_AT_calling_convention attribute. The value is one of the
1320 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1322 /* * The base class which defined the virtual function table pointer. */
1324 struct type
*vptr_basetype
;
1326 /* * For derived classes, the number of base classes is given by
1327 n_baseclasses and virtual_field_bits is a bit vector containing
1328 one bit per base class. If the base class is virtual, the
1329 corresponding bit will be set.
1334 class C : public B, public virtual A {};
1336 B is a baseclass of C; A is a virtual baseclass for C.
1337 This is a C++ 2.0 language feature. */
1339 B_TYPE
*virtual_field_bits
;
1341 /* * For classes with private fields, the number of fields is
1342 given by nfields and private_field_bits is a bit vector
1343 containing one bit per field.
1345 If the field is private, the corresponding bit will be set. */
1347 B_TYPE
*private_field_bits
;
1349 /* * For classes with protected fields, the number of fields is
1350 given by nfields and protected_field_bits is a bit vector
1351 containing one bit per field.
1353 If the field is private, the corresponding bit will be set. */
1355 B_TYPE
*protected_field_bits
;
1357 /* * For classes with fields to be ignored, either this is
1358 optimized out or this field has length 0. */
1360 B_TYPE
*ignore_field_bits
;
1362 /* * For classes, structures, and unions, a description of each
1363 field, which consists of an overloaded name, followed by the
1364 types of arguments that the method expects, and then the name
1365 after it has been renamed to make it distinct.
1367 fn_fieldlists points to an array of nfn_fields of these. */
1369 struct fn_fieldlist
*fn_fieldlists
;
1371 /* * typedefs defined inside this class. typedef_field points to
1372 an array of typedef_field_count elements. */
1374 struct decl_field
*typedef_field
;
1376 unsigned typedef_field_count
;
1378 /* * The nested types defined by this type. nested_types points to
1379 an array of nested_types_count elements. */
1381 struct decl_field
*nested_types
;
1383 unsigned nested_types_count
;
1385 /* * The template arguments. This is an array with
1386 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1389 struct symbol
**template_arguments
;
1392 /* * Struct used to store conversion rankings. */
1398 /* * When two conversions are of the same type and therefore have
1399 the same rank, subrank is used to differentiate the two.
1401 Eg: Two derived-class-pointer to base-class-pointer conversions
1402 would both have base pointer conversion rank, but the
1403 conversion with the shorter distance to the ancestor is
1404 preferable. 'subrank' would be used to reflect that. */
1409 /* * Used for ranking a function for overload resolution. */
1411 typedef std::vector
<rank
> badness_vector
;
1413 /* * GNAT Ada-specific information for various Ada types. */
1415 struct gnat_aux_type
1417 /* * Parallel type used to encode information about dynamic types
1418 used in Ada (such as variant records, variable-size array,
1420 struct type
* descriptive_type
;
1423 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1427 /* * The calling convention for targets supporting multiple ABIs.
1428 Right now this is only fetched from the Dwarf-2
1429 DW_AT_calling_convention attribute. The value is one of the
1432 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1434 /* * Whether this function normally returns to its caller. It is
1435 set from the DW_AT_noreturn attribute if set on the
1436 DW_TAG_subprogram. */
1438 unsigned int is_noreturn
: 1;
1440 /* * Only those DW_TAG_call_site's in this function that have
1441 DW_AT_call_tail_call set are linked in this list. Function
1442 without its tail call list complete
1443 (DW_AT_call_all_tail_calls or its superset
1444 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1445 DW_TAG_call_site's exist in such function. */
1447 struct call_site
*tail_call_list
;
1449 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1450 contains the method. */
1452 struct type
*self_type
;
1455 /* struct call_site_parameter can be referenced in callees by several ways. */
1457 enum call_site_parameter_kind
1459 /* * Use field call_site_parameter.u.dwarf_reg. */
1460 CALL_SITE_PARAMETER_DWARF_REG
,
1462 /* * Use field call_site_parameter.u.fb_offset. */
1463 CALL_SITE_PARAMETER_FB_OFFSET
,
1465 /* * Use field call_site_parameter.u.param_offset. */
1466 CALL_SITE_PARAMETER_PARAM_OFFSET
1469 struct call_site_target
1471 union field_location loc
;
1473 /* * Discriminant for union field_location. */
1475 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1478 union call_site_parameter_u
1480 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1481 as DWARF register number, for register passed
1486 /* * Offset from the callee's frame base, for stack passed
1487 parameters. This equals offset from the caller's stack
1490 CORE_ADDR fb_offset
;
1492 /* * Offset relative to the start of this PER_CU to
1493 DW_TAG_formal_parameter which is referenced by both
1494 caller and the callee. */
1496 cu_offset param_cu_off
;
1499 struct call_site_parameter
1501 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1503 union call_site_parameter_u u
;
1505 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1507 const gdb_byte
*value
;
1510 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1511 It may be NULL if not provided by DWARF. */
1513 const gdb_byte
*data_value
;
1514 size_t data_value_size
;
1517 /* * A place where a function gets called from, represented by
1518 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1522 /* * Address of the first instruction after this call. It must be
1523 the first field as we overload core_addr_hash and core_addr_eq
1528 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1530 struct call_site
*tail_call_next
;
1532 /* * Describe DW_AT_call_target. Missing attribute uses
1533 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1535 struct call_site_target target
;
1537 /* * Size of the PARAMETER array. */
1539 unsigned parameter_count
;
1541 /* * CU of the function where the call is located. It gets used
1542 for DWARF blocks execution in the parameter array below. */
1544 dwarf2_per_cu_data
*per_cu
;
1546 /* objfile of the function where the call is located. */
1548 dwarf2_per_objfile
*per_objfile
;
1550 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1552 struct call_site_parameter parameter
[1];
1555 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1556 static structure. */
1558 extern const struct cplus_struct_type cplus_struct_default
;
1560 extern void allocate_cplus_struct_type (struct type
*);
1562 #define INIT_CPLUS_SPECIFIC(type) \
1563 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1564 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1565 &cplus_struct_default)
1567 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1569 #define HAVE_CPLUS_STRUCT(type) \
1570 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1571 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1573 #define INIT_NONE_SPECIFIC(type) \
1574 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1575 TYPE_MAIN_TYPE (type)->type_specific = {})
1577 extern const struct gnat_aux_type gnat_aux_default
;
1579 extern void allocate_gnat_aux_type (struct type
*);
1581 #define INIT_GNAT_SPECIFIC(type) \
1582 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1583 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1584 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1585 /* * A macro that returns non-zero if the type-specific data should be
1586 read as "gnat-stuff". */
1587 #define HAVE_GNAT_AUX_INFO(type) \
1588 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1590 /* * True if TYPE is known to be an Ada type of some kind. */
1591 #define ADA_TYPE_P(type) \
1592 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1593 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1594 && TYPE_FIXED_INSTANCE (type)))
1596 #define INIT_FUNC_SPECIFIC(type) \
1597 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1598 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1599 TYPE_ZALLOC (type, \
1600 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1602 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1603 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1604 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1605 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1606 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1607 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1608 #define TYPE_CHAIN(thistype) (thistype)->chain
1609 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1610 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1611 so you only have to call check_typedef once. Since allocate_value
1612 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1613 #define TYPE_LENGTH(thistype) (thistype)->length
1615 /* * Return the alignment of the type in target addressable memory
1616 units, or 0 if no alignment was specified. */
1617 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1619 /* * Return the alignment of the type in target addressable memory
1620 units, or 0 if no alignment was specified. */
1621 extern unsigned type_raw_align (struct type
*);
1623 /* * Return the alignment of the type in target addressable memory
1624 units. Return 0 if the alignment cannot be determined; but note
1625 that this makes an effort to compute the alignment even it it was
1626 not specified in the debug info. */
1627 extern unsigned type_align (struct type
*);
1629 /* * Set the alignment of the type. The alignment must be a power of
1630 2. Returns false if the given value does not fit in the available
1631 space in struct type. */
1632 extern bool set_type_align (struct type
*, ULONGEST
);
1634 /* Property accessors for the type data location. */
1635 #define TYPE_DATA_LOCATION(thistype) \
1636 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1637 #define TYPE_DATA_LOCATION_BATON(thistype) \
1638 TYPE_DATA_LOCATION (thistype)->data.baton
1639 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1640 (TYPE_DATA_LOCATION (thistype)->const_val ())
1641 #define TYPE_DATA_LOCATION_KIND(thistype) \
1642 (TYPE_DATA_LOCATION (thistype)->kind ())
1643 #define TYPE_DYNAMIC_LENGTH(thistype) \
1644 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1646 /* Property accessors for the type allocated/associated. */
1647 #define TYPE_ALLOCATED_PROP(thistype) \
1648 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1649 #define TYPE_ASSOCIATED_PROP(thistype) \
1650 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1654 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1655 /* Do not call this, use TYPE_SELF_TYPE. */
1656 extern struct type
*internal_type_self_type (struct type
*);
1657 extern void set_type_self_type (struct type
*, struct type
*);
1659 extern int internal_type_vptr_fieldno (struct type
*);
1660 extern void set_type_vptr_fieldno (struct type
*, int);
1661 extern struct type
*internal_type_vptr_basetype (struct type
*);
1662 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1663 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1664 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1666 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1667 #define TYPE_SPECIFIC_FIELD(thistype) \
1668 TYPE_MAIN_TYPE(thistype)->type_specific_field
1669 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1670 where we're trying to print an Ada array using the C language.
1671 In that case, there is no "cplus_stuff", but the C language assumes
1672 that there is. What we do, in that case, is pretend that there is
1673 an implicit one which is the default cplus stuff. */
1674 #define TYPE_CPLUS_SPECIFIC(thistype) \
1675 (!HAVE_CPLUS_STRUCT(thistype) \
1676 ? (struct cplus_struct_type*)&cplus_struct_default \
1677 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1678 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1679 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1680 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1681 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1682 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1683 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1684 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1685 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1686 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1687 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1688 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1689 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1690 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1691 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1692 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1693 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1695 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1696 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1697 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1699 #define FIELD_NAME(thisfld) ((thisfld).name)
1700 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1701 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1702 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1703 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1704 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1705 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1706 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1707 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1708 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1709 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1710 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1711 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1712 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1713 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1714 #define SET_FIELD_PHYSNAME(thisfld, name) \
1715 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1716 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1717 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1718 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1719 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1720 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1721 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1722 FIELD_DWARF_BLOCK (thisfld) = (addr))
1723 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1724 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1726 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1727 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1728 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1729 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1730 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1731 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1732 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1733 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1734 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1735 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1737 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1738 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1739 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1740 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1741 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1742 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1743 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1744 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1745 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1746 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1747 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1748 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1749 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1750 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1751 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1752 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1753 #define TYPE_FIELD_PRIVATE(thistype, n) \
1754 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1755 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1756 #define TYPE_FIELD_PROTECTED(thistype, n) \
1757 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1758 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1759 #define TYPE_FIELD_IGNORE(thistype, n) \
1760 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1761 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1762 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1763 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1764 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1766 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1767 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1768 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1769 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1770 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1772 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1773 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1774 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1775 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1776 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1777 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1779 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1780 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1781 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1782 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1783 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1784 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1785 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1786 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1787 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1788 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1789 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1790 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1791 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1792 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1793 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1794 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1795 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1797 /* Accessors for typedefs defined by a class. */
1798 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1799 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1800 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1801 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1802 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1803 TYPE_TYPEDEF_FIELD (thistype, n).name
1804 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1805 TYPE_TYPEDEF_FIELD (thistype, n).type
1806 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1807 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1808 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1809 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1810 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1811 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1813 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1814 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1815 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1816 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1817 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1818 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1819 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1820 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1821 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1822 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1823 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1824 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1825 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1826 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1828 #define TYPE_IS_OPAQUE(thistype) \
1829 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1830 || ((thistype)->code () == TYPE_CODE_UNION)) \
1831 && ((thistype)->num_fields () == 0) \
1832 && (!HAVE_CPLUS_STRUCT (thistype) \
1833 || TYPE_NFN_FIELDS (thistype) == 0) \
1834 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1836 /* * A helper macro that returns the name of a type or "unnamed type"
1837 if the type has no name. */
1839 #define TYPE_SAFE_NAME(type) \
1840 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1842 /* * A helper macro that returns the name of an error type. If the
1843 type has a name, it is used; otherwise, a default is used. */
1845 #define TYPE_ERROR_NAME(type) \
1846 (type->name () ? type->name () : _("<error type>"))
1848 /* Given TYPE, return its floatformat. */
1849 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1853 /* Integral types. */
1855 /* Implicit size/sign (based on the architecture's ABI). */
1856 struct type
*builtin_void
;
1857 struct type
*builtin_char
;
1858 struct type
*builtin_short
;
1859 struct type
*builtin_int
;
1860 struct type
*builtin_long
;
1861 struct type
*builtin_signed_char
;
1862 struct type
*builtin_unsigned_char
;
1863 struct type
*builtin_unsigned_short
;
1864 struct type
*builtin_unsigned_int
;
1865 struct type
*builtin_unsigned_long
;
1866 struct type
*builtin_bfloat16
;
1867 struct type
*builtin_half
;
1868 struct type
*builtin_float
;
1869 struct type
*builtin_double
;
1870 struct type
*builtin_long_double
;
1871 struct type
*builtin_complex
;
1872 struct type
*builtin_double_complex
;
1873 struct type
*builtin_string
;
1874 struct type
*builtin_bool
;
1875 struct type
*builtin_long_long
;
1876 struct type
*builtin_unsigned_long_long
;
1877 struct type
*builtin_decfloat
;
1878 struct type
*builtin_decdouble
;
1879 struct type
*builtin_declong
;
1881 /* "True" character types.
1882 We use these for the '/c' print format, because c_char is just a
1883 one-byte integral type, which languages less laid back than C
1884 will print as ... well, a one-byte integral type. */
1885 struct type
*builtin_true_char
;
1886 struct type
*builtin_true_unsigned_char
;
1888 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1889 is for when an architecture needs to describe a register that has
1891 struct type
*builtin_int0
;
1892 struct type
*builtin_int8
;
1893 struct type
*builtin_uint8
;
1894 struct type
*builtin_int16
;
1895 struct type
*builtin_uint16
;
1896 struct type
*builtin_int24
;
1897 struct type
*builtin_uint24
;
1898 struct type
*builtin_int32
;
1899 struct type
*builtin_uint32
;
1900 struct type
*builtin_int64
;
1901 struct type
*builtin_uint64
;
1902 struct type
*builtin_int128
;
1903 struct type
*builtin_uint128
;
1905 /* Wide character types. */
1906 struct type
*builtin_char16
;
1907 struct type
*builtin_char32
;
1908 struct type
*builtin_wchar
;
1910 /* Pointer types. */
1912 /* * `pointer to data' type. Some target platforms use an implicitly
1913 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1914 struct type
*builtin_data_ptr
;
1916 /* * `pointer to function (returning void)' type. Harvard
1917 architectures mean that ABI function and code pointers are not
1918 interconvertible. Similarly, since ANSI, C standards have
1919 explicitly said that pointers to functions and pointers to data
1920 are not interconvertible --- that is, you can't cast a function
1921 pointer to void * and back, and expect to get the same value.
1922 However, all function pointer types are interconvertible, so void
1923 (*) () can server as a generic function pointer. */
1925 struct type
*builtin_func_ptr
;
1927 /* * `function returning pointer to function (returning void)' type.
1928 The final void return type is not significant for it. */
1930 struct type
*builtin_func_func
;
1932 /* Special-purpose types. */
1934 /* * This type is used to represent a GDB internal function. */
1936 struct type
*internal_fn
;
1938 /* * This type is used to represent an xmethod. */
1939 struct type
*xmethod
;
1942 /* * Return the type table for the specified architecture. */
1944 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1946 /* * Per-objfile types used by symbol readers. */
1950 /* Basic types based on the objfile architecture. */
1951 struct type
*builtin_void
;
1952 struct type
*builtin_char
;
1953 struct type
*builtin_short
;
1954 struct type
*builtin_int
;
1955 struct type
*builtin_long
;
1956 struct type
*builtin_long_long
;
1957 struct type
*builtin_signed_char
;
1958 struct type
*builtin_unsigned_char
;
1959 struct type
*builtin_unsigned_short
;
1960 struct type
*builtin_unsigned_int
;
1961 struct type
*builtin_unsigned_long
;
1962 struct type
*builtin_unsigned_long_long
;
1963 struct type
*builtin_half
;
1964 struct type
*builtin_float
;
1965 struct type
*builtin_double
;
1966 struct type
*builtin_long_double
;
1968 /* * This type is used to represent symbol addresses. */
1969 struct type
*builtin_core_addr
;
1971 /* * This type represents a type that was unrecognized in symbol
1973 struct type
*builtin_error
;
1975 /* * Types used for symbols with no debug information. */
1976 struct type
*nodebug_text_symbol
;
1977 struct type
*nodebug_text_gnu_ifunc_symbol
;
1978 struct type
*nodebug_got_plt_symbol
;
1979 struct type
*nodebug_data_symbol
;
1980 struct type
*nodebug_unknown_symbol
;
1981 struct type
*nodebug_tls_symbol
;
1984 /* * Return the type table for the specified objfile. */
1986 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1988 /* Explicit floating-point formats. See "floatformat.h". */
1989 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1990 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1991 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1992 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1993 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1994 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1995 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1996 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1997 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1998 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1999 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2000 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2001 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2003 /* Allocate space for storing data associated with a particular
2004 type. We ensure that the space is allocated using the same
2005 mechanism that was used to allocate the space for the type
2006 structure itself. I.e. if the type is on an objfile's
2007 objfile_obstack, then the space for data associated with that type
2008 will also be allocated on the objfile_obstack. If the type is
2009 associated with a gdbarch, then the space for data associated with that
2010 type will also be allocated on the gdbarch_obstack.
2012 If a type is not associated with neither an objfile or a gdbarch then
2013 you should not use this macro to allocate space for data, instead you
2014 should call xmalloc directly, and ensure the memory is correctly freed
2015 when it is no longer needed. */
2017 #define TYPE_ALLOC(t,size) \
2018 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2019 ? &TYPE_OBJFILE (t)->objfile_obstack \
2020 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2024 /* See comment on TYPE_ALLOC. */
2026 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2028 /* Use alloc_type to allocate a type owned by an objfile. Use
2029 alloc_type_arch to allocate a type owned by an architecture. Use
2030 alloc_type_copy to allocate a type with the same owner as a
2031 pre-existing template type, no matter whether objfile or
2033 extern struct type
*alloc_type (struct objfile
*);
2034 extern struct type
*alloc_type_arch (struct gdbarch
*);
2035 extern struct type
*alloc_type_copy (const struct type
*);
2037 /* * Return the type's architecture. For types owned by an
2038 architecture, that architecture is returned. For types owned by an
2039 objfile, that objfile's architecture is returned. */
2041 extern struct gdbarch
*get_type_arch (const struct type
*);
2043 /* * This returns the target type (or NULL) of TYPE, also skipping
2046 extern struct type
*get_target_type (struct type
*type
);
2048 /* Return the equivalent of TYPE_LENGTH, but in number of target
2049 addressable memory units of the associated gdbarch instead of bytes. */
2051 extern unsigned int type_length_units (struct type
*type
);
2053 /* * Helper function to construct objfile-owned types. */
2055 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2057 extern struct type
*init_integer_type (struct objfile
*, int, int,
2059 extern struct type
*init_character_type (struct objfile
*, int, int,
2061 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2063 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2064 const struct floatformat
**,
2065 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2066 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2067 extern struct type
*init_complex_type (const char *, struct type
*);
2068 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2071 /* Helper functions to construct architecture-owned types. */
2072 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2074 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2076 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2078 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2080 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2081 const struct floatformat
**);
2082 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2083 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2086 /* Helper functions to construct a struct or record type. An
2087 initially empty type is created using arch_composite_type().
2088 Fields are then added using append_composite_type_field*(). A union
2089 type has its size set to the largest field. A struct type has each
2090 field packed against the previous. */
2092 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2093 const char *name
, enum type_code code
);
2094 extern void append_composite_type_field (struct type
*t
, const char *name
,
2095 struct type
*field
);
2096 extern void append_composite_type_field_aligned (struct type
*t
,
2100 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2101 struct type
*field
);
2103 /* Helper functions to construct a bit flags type. An initially empty
2104 type is created using arch_flag_type(). Flags are then added using
2105 append_flag_type_field() and append_flag_type_flag(). */
2106 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2107 const char *name
, int bit
);
2108 extern void append_flags_type_field (struct type
*type
,
2109 int start_bitpos
, int nr_bits
,
2110 struct type
*field_type
, const char *name
);
2111 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2114 extern void make_vector_type (struct type
*array_type
);
2115 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2117 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2118 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2119 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2122 extern struct type
*make_reference_type (struct type
*, struct type
**,
2125 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2127 extern struct type
*make_restrict_type (struct type
*);
2129 extern struct type
*make_unqualified_type (struct type
*);
2131 extern struct type
*make_atomic_type (struct type
*);
2133 extern void replace_type (struct type
*, struct type
*);
2135 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2137 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2139 extern struct type
*make_type_with_address_space (struct type
*type
,
2140 int space_identifier
);
2142 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2144 extern struct type
*lookup_methodptr_type (struct type
*);
2146 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2147 struct type
*to_type
, struct field
*args
,
2148 int nargs
, int varargs
);
2150 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2153 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2155 extern struct type
*allocate_stub_method (struct type
*);
2157 extern const char *type_name_or_error (struct type
*type
);
2161 /* The field of the element, or NULL if no element was found. */
2162 struct field
*field
;
2164 /* The bit offset of the element in the parent structure. */
2168 /* Given a type TYPE, lookup the field and offset of the component named
2171 TYPE can be either a struct or union, or a pointer or reference to
2172 a struct or union. If it is a pointer or reference, its target
2173 type is automatically used. Thus '.' and '->' are interchangable,
2174 as specified for the definitions of the expression element types
2175 STRUCTOP_STRUCT and STRUCTOP_PTR.
2177 If NOERR is nonzero, the returned structure will have field set to
2178 NULL if there is no component named NAME.
2180 If the component NAME is a field in an anonymous substructure of
2181 TYPE, the returned offset is a "global" offset relative to TYPE
2182 rather than an offset within the substructure. */
2184 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2186 /* Given a type TYPE, lookup the type of the component named NAME.
2188 TYPE can be either a struct or union, or a pointer or reference to
2189 a struct or union. If it is a pointer or reference, its target
2190 type is automatically used. Thus '.' and '->' are interchangable,
2191 as specified for the definitions of the expression element types
2192 STRUCTOP_STRUCT and STRUCTOP_PTR.
2194 If NOERR is nonzero, return NULL if there is no component named
2197 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2199 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2201 extern struct type
*lookup_pointer_type (struct type
*);
2203 extern struct type
*make_function_type (struct type
*, struct type
**);
2205 extern struct type
*lookup_function_type (struct type
*);
2207 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2211 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2215 extern struct type
*create_array_type_with_stride
2216 (struct type
*, struct type
*, struct type
*,
2217 struct dynamic_prop
*, unsigned int);
2219 extern struct type
*create_range_type (struct type
*, struct type
*,
2220 const struct dynamic_prop
*,
2221 const struct dynamic_prop
*,
2224 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2225 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2228 extern struct type
* create_range_type_with_stride
2229 (struct type
*result_type
, struct type
*index_type
,
2230 const struct dynamic_prop
*low_bound
,
2231 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2232 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2234 extern struct type
*create_array_type (struct type
*, struct type
*,
2237 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2239 extern struct type
*create_string_type (struct type
*, struct type
*,
2241 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2243 extern struct type
*create_set_type (struct type
*, struct type
*);
2245 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2248 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2251 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2253 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2255 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2256 ADDR specifies the location of the variable the type is bound to.
2257 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2258 static properties is returned. */
2259 extern struct type
*resolve_dynamic_type
2260 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2263 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2264 extern int is_dynamic_type (struct type
*type
);
2266 extern struct type
*check_typedef (struct type
*);
2268 extern void check_stub_method_group (struct type
*, int);
2270 extern char *gdb_mangle_name (struct type
*, int, int);
2272 extern struct type
*lookup_typename (const struct language_defn
*,
2273 const char *, const struct block
*, int);
2275 extern struct type
*lookup_template_type (const char *, struct type
*,
2276 const struct block
*);
2278 extern int get_vptr_fieldno (struct type
*, struct type
**);
2280 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2282 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2283 LONGEST
*high_bound
);
2285 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2287 extern int class_types_same_p (const struct type
*, const struct type
*);
2289 extern int is_ancestor (struct type
*, struct type
*);
2291 extern int is_public_ancestor (struct type
*, struct type
*);
2293 extern int is_unique_ancestor (struct type
*, struct value
*);
2295 /* Overload resolution */
2297 /* * Badness if parameter list length doesn't match arg list length. */
2298 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2300 /* * Dummy badness value for nonexistent parameter positions. */
2301 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2302 /* * Badness if no conversion among types. */
2303 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2305 /* * Badness of an exact match. */
2306 extern const struct rank EXACT_MATCH_BADNESS
;
2308 /* * Badness of integral promotion. */
2309 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2310 /* * Badness of floating promotion. */
2311 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2312 /* * Badness of converting a derived class pointer
2313 to a base class pointer. */
2314 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2315 /* * Badness of integral conversion. */
2316 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2317 /* * Badness of floating conversion. */
2318 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2319 /* * Badness of integer<->floating conversions. */
2320 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2321 /* * Badness of conversion of pointer to void pointer. */
2322 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2323 /* * Badness of conversion to boolean. */
2324 extern const struct rank BOOL_CONVERSION_BADNESS
;
2325 /* * Badness of converting derived to base class. */
2326 extern const struct rank BASE_CONVERSION_BADNESS
;
2327 /* * Badness of converting from non-reference to reference. Subrank
2328 is the type of reference conversion being done. */
2329 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2330 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2331 /* * Conversion to rvalue reference. */
2332 #define REFERENCE_CONVERSION_RVALUE 1
2333 /* * Conversion to const lvalue reference. */
2334 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2336 /* * Badness of converting integer 0 to NULL pointer. */
2337 extern const struct rank NULL_POINTER_CONVERSION
;
2338 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2340 extern const struct rank CV_CONVERSION_BADNESS
;
2341 #define CV_CONVERSION_CONST 1
2342 #define CV_CONVERSION_VOLATILE 2
2344 /* Non-standard conversions allowed by the debugger */
2346 /* * Converting a pointer to an int is usually OK. */
2347 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2349 /* * Badness of converting a (non-zero) integer constant
2351 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2353 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2354 extern int compare_ranks (struct rank a
, struct rank b
);
2356 extern int compare_badness (const badness_vector
&,
2357 const badness_vector
&);
2359 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2360 gdb::array_view
<value
*> args
);
2362 extern struct rank
rank_one_type (struct type
*, struct type
*,
2365 extern void recursive_dump_type (struct type
*, int);
2367 extern int field_is_static (struct field
*);
2371 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2372 const struct value_print_options
*,
2373 int, struct ui_file
*);
2375 extern int can_dereference (struct type
*);
2377 extern int is_integral_type (struct type
*);
2379 extern int is_floating_type (struct type
*);
2381 extern int is_scalar_type (struct type
*type
);
2383 extern int is_scalar_type_recursive (struct type
*);
2385 extern int class_or_union_p (const struct type
*);
2387 extern void maintenance_print_type (const char *, int);
2389 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2391 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2393 htab_t copied_types
);
2395 extern struct type
*copy_type (const struct type
*type
);
2397 extern bool types_equal (struct type
*, struct type
*);
2399 extern bool types_deeply_equal (struct type
*, struct type
*);
2401 extern int type_not_allocated (const struct type
*type
);
2403 extern int type_not_associated (const struct type
*type
);
2405 /* * When the type includes explicit byte ordering, return that.
2406 Otherwise, the byte ordering from gdbarch_byte_order for
2407 get_type_arch is returned. */
2409 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2411 /* A flag to enable printing of debugging information of C++
2414 extern unsigned int overload_debug
;
2416 #endif /* GDBTYPES_H */