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 /* * Identify a vector type. Gcc is handling this by adding an extra
220 attribute to the array type. We slurp that in as a new flag of a
221 type. This is used only in dwarf2read.c. */
222 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
224 /* * The debugging formats (especially STABS) do not contain enough
225 information to represent all Ada types---especially those whose
226 size depends on dynamic quantities. Therefore, the GNAT Ada
227 compiler includes extra information in the form of additional type
228 definitions connected by naming conventions. This flag indicates
229 that the type is an ordinary (unencoded) GDB type that has been
230 created from the necessary run-time information, and does not need
231 further interpretation. Optionally marks ordinary, fixed-size GDB
234 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
236 /* * This debug target supports TYPE_STUB(t). In the unsupported case
237 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
238 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
239 guessed the TYPE_STUB(t) value (see dwarfread.c). */
241 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
243 /* * Not textual. By default, GDB treats all single byte integers as
244 characters (or elements of strings) unless this flag is set. */
246 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
248 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
249 address is returned by this function call. TYPE_TARGET_TYPE
250 determines the final returned function type to be presented to
253 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
255 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
256 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
257 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
259 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
260 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
261 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
263 /* * True if this type was declared using the "class" keyword. This is
264 only valid for C++ structure and enum types. If false, a structure
265 was declared as a "struct"; if true it was declared "class". For
266 enum types, this is true when "enum class" or "enum struct" was
267 used to declare the type.. */
269 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
271 /* * True if this type is a "flag" enum. A flag enum is one where all
272 the values are pairwise disjoint when "and"ed together. This
273 affects how enum values are printed. */
275 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
277 /* * Constant type. If this is set, the corresponding type has a
280 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
282 /* * Volatile type. If this is set, the corresponding type has a
283 volatile modifier. */
285 #define TYPE_VOLATILE(t) \
286 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
288 /* * Restrict type. If this is set, the corresponding type has a
289 restrict modifier. */
291 #define TYPE_RESTRICT(t) \
292 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
294 /* * Atomic type. If this is set, the corresponding type has an
297 #define TYPE_ATOMIC(t) \
298 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
300 /* * True if this type represents either an lvalue or lvalue reference type. */
302 #define TYPE_IS_REFERENCE(t) \
303 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
305 /* * True if this type is allocatable. */
306 #define TYPE_IS_ALLOCATABLE(t) \
307 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
309 /* * True if this type has variant parts. */
310 #define TYPE_HAS_VARIANT_PARTS(t) \
311 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
313 /* * True if this type has a dynamic length. */
314 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
315 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
317 /* * Instruction-space delimited type. This is for Harvard architectures
318 which have separate instruction and data address spaces (and perhaps
321 GDB usually defines a flat address space that is a superset of the
322 architecture's two (or more) address spaces, but this is an extension
323 of the architecture's model.
325 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
326 resides in instruction memory, even if its address (in the extended
327 flat address space) does not reflect this.
329 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
330 corresponding type resides in the data memory space, even if
331 this is not indicated by its (flat address space) address.
333 If neither flag is set, the default space for functions / methods
334 is instruction space, and for data objects is data memory. */
336 #define TYPE_CODE_SPACE(t) \
337 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
339 #define TYPE_DATA_SPACE(t) \
340 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
342 /* * Address class flags. Some environments provide for pointers
343 whose size is different from that of a normal pointer or address
344 types where the bits are interpreted differently than normal
345 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
346 target specific ways to represent these different types of address
349 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
350 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
351 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
352 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
353 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
354 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
355 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
356 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
358 /* * Information about a single discriminant. */
360 struct discriminant_range
362 /* * The range of values for the variant. This is an inclusive
366 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
367 is true if this should be an unsigned comparison; false for
369 bool contains (ULONGEST value
, bool is_unsigned
) const
372 return value
>= low
&& value
<= high
;
373 LONGEST valuel
= (LONGEST
) value
;
374 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
380 /* * A single variant. A variant has a list of discriminant values.
381 When the discriminator matches one of these, the variant is
382 enabled. Each variant controls zero or more fields; and may also
383 control other variant parts as well. This struct corresponds to
384 DW_TAG_variant in DWARF. */
386 struct variant
: allocate_on_obstack
388 /* * The discriminant ranges for this variant. */
389 gdb::array_view
<discriminant_range
> discriminants
;
391 /* * The fields controlled by this variant. This is inclusive on
392 the low end and exclusive on the high end. A variant may not
393 control any fields, in which case the two values will be equal.
394 These are indexes into the type's array of fields. */
398 /* * Variant parts controlled by this variant. */
399 gdb::array_view
<variant_part
> parts
;
401 /* * Return true if this is the default variant. The default
402 variant can be recognized because it has no associated
404 bool is_default () const
406 return discriminants
.empty ();
409 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
410 if this should be an unsigned comparison; false for signed. */
411 bool matches (ULONGEST value
, bool is_unsigned
) const;
414 /* * A variant part. Each variant part has an optional discriminant
415 and holds an array of variants. This struct corresponds to
416 DW_TAG_variant_part in DWARF. */
418 struct variant_part
: allocate_on_obstack
420 /* * The index of the discriminant field in the outer type. This is
421 an index into the type's array of fields. If this is -1, there
422 is no discriminant, and only the default variant can be
423 considered to be selected. */
424 int discriminant_index
;
426 /* * True if this discriminant is unsigned; false if signed. This
427 comes from the type of the discriminant. */
430 /* * The variants that are controlled by this variant part. Note
431 that these will always be sorted by field number. */
432 gdb::array_view
<variant
> variants
;
436 enum dynamic_prop_kind
438 PROP_UNDEFINED
, /* Not defined. */
439 PROP_CONST
, /* Constant. */
440 PROP_ADDR_OFFSET
, /* Address offset. */
441 PROP_LOCEXPR
, /* Location expression. */
442 PROP_LOCLIST
, /* Location list. */
443 PROP_VARIANT_PARTS
, /* Variant parts. */
444 PROP_TYPE
, /* Type. */
447 union dynamic_prop_data
449 /* Storage for constant property. */
453 /* Storage for dynamic property. */
457 /* Storage of variant parts for a type. A type with variant parts
458 has all its fields "linearized" -- stored in a single field
459 array, just as if they had all been declared that way. The
460 variant parts are attached via a dynamic property, and then are
461 used to control which fields end up in the final type during
462 dynamic type resolution. */
464 const gdb::array_view
<variant_part
> *variant_parts
;
466 /* Once a variant type is resolved, we may want to be able to go
467 from the resolved type to the original type. In this case we
468 rewrite the property's kind and set this field. */
470 struct type
*original_type
;
473 /* * Used to store a dynamic property. */
477 dynamic_prop_kind
kind () const
482 void set_undefined ()
484 m_kind
= PROP_UNDEFINED
;
487 LONGEST
const_val () const
489 gdb_assert (m_kind
== PROP_CONST
);
491 return m_data
.const_val
;
494 void set_const_val (LONGEST const_val
)
497 m_data
.const_val
= const_val
;
502 gdb_assert (m_kind
== PROP_LOCEXPR
503 || m_kind
== PROP_LOCLIST
504 || m_kind
== PROP_ADDR_OFFSET
);
509 void set_locexpr (void *baton
)
511 m_kind
= PROP_LOCEXPR
;
512 m_data
.baton
= baton
;
515 void set_loclist (void *baton
)
517 m_kind
= PROP_LOCLIST
;
518 m_data
.baton
= baton
;
521 void set_addr_offset (void *baton
)
523 m_kind
= PROP_ADDR_OFFSET
;
524 m_data
.baton
= baton
;
527 const gdb::array_view
<variant_part
> *variant_parts () const
529 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
531 return m_data
.variant_parts
;
534 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
536 m_kind
= PROP_VARIANT_PARTS
;
537 m_data
.variant_parts
= variant_parts
;
540 struct type
*original_type () const
542 gdb_assert (m_kind
== PROP_TYPE
);
544 return m_data
.original_type
;
547 void set_original_type (struct type
*original_type
)
550 m_data
.original_type
= original_type
;
553 /* Determine which field of the union dynamic_prop.data is used. */
554 enum dynamic_prop_kind m_kind
;
556 /* Storage for dynamic or static value. */
557 union dynamic_prop_data m_data
;
560 /* Compare two dynamic_prop objects for equality. dynamic_prop
561 instances are equal iff they have the same type and storage. */
562 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
564 /* Compare two dynamic_prop objects for inequality. */
565 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
570 /* * Define a type's dynamic property node kind. */
571 enum dynamic_prop_node_kind
573 /* A property providing a type's data location.
574 Evaluating this field yields to the location of an object's data. */
575 DYN_PROP_DATA_LOCATION
,
577 /* A property representing DW_AT_allocated. The presence of this attribute
578 indicates that the object of the type can be allocated/deallocated. */
581 /* A property representing DW_AT_associated. The presence of this attribute
582 indicated that the object of the type can be associated. */
585 /* A property providing an array's byte stride. */
586 DYN_PROP_BYTE_STRIDE
,
588 /* A property holding variant parts. */
589 DYN_PROP_VARIANT_PARTS
,
591 /* A property holding the size of the type. */
595 /* * List for dynamic type attributes. */
596 struct dynamic_prop_list
598 /* The kind of dynamic prop in this node. */
599 enum dynamic_prop_node_kind prop_kind
;
601 /* The dynamic property itself. */
602 struct dynamic_prop prop
;
604 /* A pointer to the next dynamic property. */
605 struct dynamic_prop_list
*next
;
608 /* * Determine which field of the union main_type.fields[x].loc is
613 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
614 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
615 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
616 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
617 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
620 /* * A discriminant to determine which field in the
621 main_type.type_specific union is being used, if any.
623 For types such as TYPE_CODE_FLT, the use of this
624 discriminant is really redundant, as we know from the type code
625 which field is going to be used. As such, it would be possible to
626 reduce the size of this enum in order to save a bit or two for
627 other fields of struct main_type. But, since we still have extra
628 room , and for the sake of clarity and consistency, we treat all fields
629 of the union the same way. */
631 enum type_specific_kind
634 TYPE_SPECIFIC_CPLUS_STUFF
,
635 TYPE_SPECIFIC_GNAT_STUFF
,
636 TYPE_SPECIFIC_FLOATFORMAT
,
637 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
639 TYPE_SPECIFIC_SELF_TYPE
644 struct objfile
*objfile
;
645 struct gdbarch
*gdbarch
;
650 /* * Position of this field, counting in bits from start of
651 containing structure. For big-endian targets, it is the bit
652 offset to the MSB. For little-endian targets, it is the bit
653 offset to the LSB. */
660 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
661 physaddr is the location (in the target) of the static
662 field. Otherwise, physname is the mangled label of the
666 const char *physname
;
668 /* * The field location can be computed by evaluating the
669 following DWARF block. Its DATA is allocated on
670 objfile_obstack - no CU load is needed to access it. */
672 struct dwarf2_locexpr_baton
*dwarf_block
;
677 struct type
*type () const
682 void set_type (struct type
*type
)
687 union field_location loc
;
689 /* * For a function or member type, this is 1 if the argument is
690 marked artificial. Artificial arguments should not be shown
691 to the user. For TYPE_CODE_RANGE it is set if the specific
692 bound is not defined. */
694 unsigned int artificial
: 1;
696 /* * Discriminant for union field_location. */
698 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
700 /* * Size of this field, in bits, or zero if not packed.
701 If non-zero in an array type, indicates the element size in
702 bits (used only in Ada at the moment).
703 For an unpacked field, the field's type's length
704 says how many bytes the field occupies. */
706 unsigned int bitsize
: 28;
708 /* * In a struct or union type, type of this field.
709 - In a function or member type, type of this argument.
710 - In an array type, the domain-type of the array. */
714 /* * Name of field, value or argument.
715 NULL for range bounds, array domains, and member function
723 ULONGEST
bit_stride () const
725 if (this->flag_is_byte_stride
)
726 return this->stride
.const_val () * 8;
728 return this->stride
.const_val ();
731 /* * Low bound of range. */
733 struct dynamic_prop low
;
735 /* * High bound of range. */
737 struct dynamic_prop high
;
739 /* The stride value for this range. This can be stored in bits or bytes
740 based on the value of BYTE_STRIDE_P. It is optional to have a stride
741 value, if this range has no stride value defined then this will be set
742 to the constant zero. */
744 struct dynamic_prop stride
;
746 /* * The bias. Sometimes a range value is biased before storage.
747 The bias is added to the stored bits to form the true value. */
751 /* True if HIGH range bound contains the number of elements in the
752 subrange. This affects how the final high bound is computed. */
754 unsigned int flag_upper_bound_is_count
: 1;
756 /* True if LOW or/and HIGH are resolved into a static bound from
759 unsigned int flag_bound_evaluated
: 1;
761 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
763 unsigned int flag_is_byte_stride
: 1;
766 /* Compare two range_bounds objects for equality. Simply does
767 memberwise comparison. */
768 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
770 /* Compare two range_bounds objects for inequality. */
771 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
778 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
779 point to cplus_struct_default, a default static instance of a
780 struct cplus_struct_type. */
782 struct cplus_struct_type
*cplus_stuff
;
784 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
785 provides additional information. */
787 struct gnat_aux_type
*gnat_stuff
;
789 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
790 floatformat object that describes the floating-point value
791 that resides within the type. */
793 const struct floatformat
*floatformat
;
795 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
797 struct func_type
*func_stuff
;
799 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
800 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
803 struct type
*self_type
;
806 /* * Main structure representing a type in GDB.
808 This structure is space-critical. Its layout has been tweaked to
809 reduce the space used. */
813 /* * Code for kind of type. */
815 ENUM_BITFIELD(type_code
) code
: 8;
817 /* * Flags about this type. These fields appear at this location
818 because they packs nicely here. See the TYPE_* macros for
819 documentation about these fields. */
821 unsigned int m_flag_unsigned
: 1;
822 unsigned int m_flag_nosign
: 1;
823 unsigned int m_flag_stub
: 1;
824 unsigned int m_flag_target_stub
: 1;
825 unsigned int m_flag_prototyped
: 1;
826 unsigned int m_flag_varargs
: 1;
827 unsigned int flag_vector
: 1;
828 unsigned int flag_stub_supported
: 1;
829 unsigned int flag_gnu_ifunc
: 1;
830 unsigned int flag_fixed_instance
: 1;
831 unsigned int flag_objfile_owned
: 1;
832 unsigned int flag_endianity_not_default
: 1;
834 /* * True if this type was declared with "class" rather than
837 unsigned int flag_declared_class
: 1;
839 /* * True if this is an enum type with disjoint values. This
840 affects how the enum is printed. */
842 unsigned int flag_flag_enum
: 1;
844 /* * A discriminant telling us which field of the type_specific
845 union is being used for this type, if any. */
847 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
849 /* * Number of fields described for this type. This field appears
850 at this location because it packs nicely here. */
854 /* * Name of this type, or NULL if none.
856 This is used for printing only. For looking up a name, look for
857 a symbol in the VAR_DOMAIN. This is generally allocated in the
858 objfile's obstack. However coffread.c uses malloc. */
862 /* * Every type is now associated with a particular objfile, and the
863 type is allocated on the objfile_obstack for that objfile. One
864 problem however, is that there are times when gdb allocates new
865 types while it is not in the process of reading symbols from a
866 particular objfile. Fortunately, these happen when the type
867 being created is a derived type of an existing type, such as in
868 lookup_pointer_type(). So we can just allocate the new type
869 using the same objfile as the existing type, but to do this we
870 need a backpointer to the objfile from the existing type. Yes
871 this is somewhat ugly, but without major overhaul of the internal
872 type system, it can't be avoided for now. */
874 union type_owner owner
;
876 /* * For a pointer type, describes the type of object pointed to.
877 - For an array type, describes the type of the elements.
878 - For a function or method type, describes the type of the return value.
879 - For a range type, describes the type of the full range.
880 - For a complex type, describes the type of each coordinate.
881 - For a special record or union type encoding a dynamic-sized type
882 in GNAT, a memoized pointer to a corresponding static version of
884 - Unused otherwise. */
886 struct type
*target_type
;
888 /* * For structure and union types, a description of each field.
889 For set and pascal array types, there is one "field",
890 whose type is the domain type of the set or array.
891 For range types, there are two "fields",
892 the minimum and maximum values (both inclusive).
893 For enum types, each possible value is described by one "field".
894 For a function or method type, a "field" for each parameter.
895 For C++ classes, there is one field for each base class (if it is
896 a derived class) plus one field for each class data member. Member
897 functions are recorded elsewhere.
899 Using a pointer to a separate array of fields
900 allows all types to have the same size, which is useful
901 because we can allocate the space for a type before
902 we know what to put in it. */
906 struct field
*fields
;
908 /* * Union member used for range types. */
910 struct range_bounds
*bounds
;
912 /* If this is a scalar type, then this is its corresponding
914 struct type
*complex_type
;
918 /* * Slot to point to additional language-specific fields of this
921 union type_specific type_specific
;
923 /* * Contains all dynamic type properties. */
924 struct dynamic_prop_list
*dyn_prop_list
;
927 /* * Number of bits allocated for alignment. */
929 #define TYPE_ALIGN_BITS 8
931 /* * A ``struct type'' describes a particular instance of a type, with
932 some particular qualification. */
936 /* Get the type code of this type.
938 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
939 type, you need to do `check_typedef (type)->code ()`. */
940 type_code
code () const
942 return this->main_type
->code
;
945 /* Set the type code of this type. */
946 void set_code (type_code code
)
948 this->main_type
->code
= code
;
951 /* Get the name of this type. */
952 const char *name () const
954 return this->main_type
->name
;
957 /* Set the name of this type. */
958 void set_name (const char *name
)
960 this->main_type
->name
= name
;
963 /* Get the number of fields of this type. */
964 int num_fields () const
966 return this->main_type
->nfields
;
969 /* Set the number of fields of this type. */
970 void set_num_fields (int num_fields
)
972 this->main_type
->nfields
= num_fields
;
975 /* Get the fields array of this type. */
976 struct field
*fields () const
978 return this->main_type
->flds_bnds
.fields
;
981 /* Get the field at index IDX. */
982 struct field
&field (int idx
) const
984 return this->fields ()[idx
];
987 /* Set the fields array of this type. */
988 void set_fields (struct field
*fields
)
990 this->main_type
->flds_bnds
.fields
= fields
;
993 type
*index_type () const
995 return this->field (0).type ();
998 void set_index_type (type
*index_type
)
1000 this->field (0).set_type (index_type
);
1003 /* Get the bounds bounds of this type. The type must be a range type. */
1004 range_bounds
*bounds () const
1006 switch (this->code ())
1008 case TYPE_CODE_RANGE
:
1009 return this->main_type
->flds_bnds
.bounds
;
1011 case TYPE_CODE_ARRAY
:
1012 case TYPE_CODE_STRING
:
1013 return this->index_type ()->bounds ();
1016 gdb_assert_not_reached
1017 ("type::bounds called on type with invalid code");
1021 /* Set the bounds of this type. The type must be a range type. */
1022 void set_bounds (range_bounds
*bounds
)
1024 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1026 this->main_type
->flds_bnds
.bounds
= bounds
;
1029 ULONGEST
bit_stride () const
1031 return this->bounds ()->bit_stride ();
1034 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT,
1035 the type is signed (unless TYPE_NOSIGN is set). */
1037 bool is_unsigned () const
1039 return this->main_type
->m_flag_unsigned
;
1042 void set_is_unsigned (bool is_unsigned
)
1044 this->main_type
->m_flag_unsigned
= is_unsigned
;
1047 /* No sign for this type. In C++, "char", "signed char", and
1048 "unsigned char" are distinct types; so we need an extra flag to
1049 indicate the absence of a sign! */
1051 bool has_no_signedness () const
1053 return this->main_type
->m_flag_nosign
;
1056 void set_has_no_signedness (bool has_no_signedness
)
1058 this->main_type
->m_flag_nosign
= has_no_signedness
;
1061 /* This appears in a type's flags word if it is a stub type (e.g.,
1062 if someone referenced a type that wasn't defined in a source file
1063 via (struct sir_not_appearing_in_this_film *)). */
1065 bool is_stub () const
1067 return this->main_type
->m_flag_stub
;
1070 void set_is_stub (bool is_stub
)
1072 this->main_type
->m_flag_stub
= is_stub
;
1075 /* The target type of this type is a stub type, and this type needs
1076 to be updated if it gets un-stubbed in check_typedef. Used for
1077 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
1078 based on the TYPE_LENGTH of the target type. Also, set for
1079 TYPE_CODE_TYPEDEF. */
1081 bool target_is_stub () const
1083 return this->main_type
->m_flag_target_stub
;
1086 void set_target_is_stub (bool target_is_stub
)
1088 this->main_type
->m_flag_target_stub
= target_is_stub
;
1091 /* This is a function type which appears to have a prototype. We
1092 need this for function calls in order to tell us if it's necessary
1093 to coerce the args, or to just do the standard conversions. This
1094 is used with a short field. */
1096 bool is_prototyped () const
1098 return this->main_type
->m_flag_prototyped
;
1101 void set_is_prototyped (bool is_prototyped
)
1103 this->main_type
->m_flag_prototyped
= is_prototyped
;
1106 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
1109 bool has_varargs () const
1111 return this->main_type
->m_flag_varargs
;
1114 void set_has_varargs (bool has_varargs
)
1116 this->main_type
->m_flag_varargs
= has_varargs
;
1119 /* * Return the dynamic property of the requested KIND from this type's
1120 list of dynamic properties. */
1121 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1123 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1124 property to this type.
1126 This function assumes that this type is objfile-owned. */
1127 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1129 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1130 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1132 /* * Type that is a pointer to this type.
1133 NULL if no such pointer-to type is known yet.
1134 The debugger may add the address of such a type
1135 if it has to construct one later. */
1137 struct type
*pointer_type
;
1139 /* * C++: also need a reference type. */
1141 struct type
*reference_type
;
1143 /* * A C++ rvalue reference type added in C++11. */
1145 struct type
*rvalue_reference_type
;
1147 /* * Variant chain. This points to a type that differs from this
1148 one only in qualifiers and length. Currently, the possible
1149 qualifiers are const, volatile, code-space, data-space, and
1150 address class. The length may differ only when one of the
1151 address class flags are set. The variants are linked in a
1152 circular ring and share MAIN_TYPE. */
1156 /* * The alignment for this type. Zero means that the alignment was
1157 not specified in the debug info. Note that this is stored in a
1158 funny way: as the log base 2 (plus 1) of the alignment; so a
1159 value of 1 means the alignment is 1, and a value of 9 means the
1160 alignment is 256. */
1162 unsigned align_log2
: TYPE_ALIGN_BITS
;
1164 /* * Flags specific to this instance of the type, indicating where
1167 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1168 binary or-ed with the target type, with a special case for
1169 address class and space class. For example if this typedef does
1170 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1171 instance flags are completely inherited from the target type. No
1172 qualifiers can be cleared by the typedef. See also
1174 unsigned instance_flags
: 9;
1176 /* * Length of storage for a value of this type. The value is the
1177 expression in host bytes of what sizeof(type) would return. This
1178 size includes padding. For example, an i386 extended-precision
1179 floating point value really only occupies ten bytes, but most
1180 ABI's declare its size to be 12 bytes, to preserve alignment.
1181 A `struct type' representing such a floating-point type would
1182 have a `length' value of 12, even though the last two bytes are
1185 Since this field is expressed in host bytes, its value is appropriate
1186 to pass to memcpy and such (it is assumed that GDB itself always runs
1187 on an 8-bits addressable architecture). However, when using it for
1188 target address arithmetic (e.g. adding it to a target address), the
1189 type_length_units function should be used in order to get the length
1190 expressed in target addressable memory units. */
1194 /* * Core type, shared by a group of qualified types. */
1196 struct main_type
*main_type
;
1202 /* * The overloaded name.
1203 This is generally allocated in the objfile's obstack.
1204 However stabsread.c sometimes uses malloc. */
1208 /* * The number of methods with this name. */
1212 /* * The list of methods. */
1214 struct fn_field
*fn_fields
;
1221 /* * If is_stub is clear, this is the mangled name which we can look
1222 up to find the address of the method (FIXME: it would be cleaner
1223 to have a pointer to the struct symbol here instead).
1225 If is_stub is set, this is the portion of the mangled name which
1226 specifies the arguments. For example, "ii", if there are two int
1227 arguments, or "" if there are no arguments. See gdb_mangle_name
1228 for the conversion from this format to the one used if is_stub is
1231 const char *physname
;
1233 /* * The function type for the method.
1235 (This comment used to say "The return value of the method", but
1236 that's wrong. The function type is expected here, i.e. something
1237 with TYPE_CODE_METHOD, and *not* the return-value type). */
1241 /* * For virtual functions. First baseclass that defines this
1242 virtual function. */
1244 struct type
*fcontext
;
1248 unsigned int is_const
:1;
1249 unsigned int is_volatile
:1;
1250 unsigned int is_private
:1;
1251 unsigned int is_protected
:1;
1252 unsigned int is_artificial
:1;
1254 /* * A stub method only has some fields valid (but they are enough
1255 to reconstruct the rest of the fields). */
1257 unsigned int is_stub
:1;
1259 /* * True if this function is a constructor, false otherwise. */
1261 unsigned int is_constructor
: 1;
1263 /* * True if this function is deleted, false otherwise. */
1265 unsigned int is_deleted
: 1;
1267 /* * DW_AT_defaulted attribute for this function. The value is one
1268 of the DW_DEFAULTED constants. */
1270 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1274 unsigned int dummy
:6;
1276 /* * Index into that baseclass's virtual function table, minus 2;
1277 else if static: VOFFSET_STATIC; else: 0. */
1279 unsigned int voffset
:16;
1281 #define VOFFSET_STATIC 1
1287 /* * Unqualified name to be prefixed by owning class qualified
1292 /* * Type this typedef named NAME represents. */
1296 /* * True if this field was declared protected, false otherwise. */
1297 unsigned int is_protected
: 1;
1299 /* * True if this field was declared private, false otherwise. */
1300 unsigned int is_private
: 1;
1303 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1304 TYPE_CODE_UNION nodes. */
1306 struct cplus_struct_type
1308 /* * Number of base classes this type derives from. The
1309 baseclasses are stored in the first N_BASECLASSES fields
1310 (i.e. the `fields' field of the struct type). The only fields
1311 of struct field that are used are: type, name, loc.bitpos. */
1313 short n_baseclasses
;
1315 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1316 All access to this field must be through TYPE_VPTR_FIELDNO as one
1317 thing it does is check whether the field has been initialized.
1318 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1319 which for portability reasons doesn't initialize this field.
1320 TYPE_VPTR_FIELDNO returns -1 for this case.
1322 If -1, we were unable to find the virtual function table pointer in
1323 initial symbol reading, and get_vptr_fieldno should be called to find
1324 it if possible. get_vptr_fieldno will update this field if possible.
1325 Otherwise the value is left at -1.
1327 Unused if this type does not have virtual functions. */
1331 /* * Number of methods with unique names. All overloaded methods
1332 with the same name count only once. */
1336 /* * Number of template arguments. */
1338 unsigned short n_template_arguments
;
1340 /* * One if this struct is a dynamic class, as defined by the
1341 Itanium C++ ABI: if it requires a virtual table pointer,
1342 because it or any of its base classes have one or more virtual
1343 member functions or virtual base classes. Minus one if not
1344 dynamic. Zero if not yet computed. */
1348 /* * The calling convention for this type, fetched from the
1349 DW_AT_calling_convention attribute. The value is one of the
1352 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1354 /* * The base class which defined the virtual function table pointer. */
1356 struct type
*vptr_basetype
;
1358 /* * For derived classes, the number of base classes is given by
1359 n_baseclasses and virtual_field_bits is a bit vector containing
1360 one bit per base class. If the base class is virtual, the
1361 corresponding bit will be set.
1366 class C : public B, public virtual A {};
1368 B is a baseclass of C; A is a virtual baseclass for C.
1369 This is a C++ 2.0 language feature. */
1371 B_TYPE
*virtual_field_bits
;
1373 /* * For classes with private fields, the number of fields is
1374 given by nfields and private_field_bits is a bit vector
1375 containing one bit per field.
1377 If the field is private, the corresponding bit will be set. */
1379 B_TYPE
*private_field_bits
;
1381 /* * For classes with protected fields, the number of fields is
1382 given by nfields and protected_field_bits is a bit vector
1383 containing one bit per field.
1385 If the field is private, the corresponding bit will be set. */
1387 B_TYPE
*protected_field_bits
;
1389 /* * For classes with fields to be ignored, either this is
1390 optimized out or this field has length 0. */
1392 B_TYPE
*ignore_field_bits
;
1394 /* * For classes, structures, and unions, a description of each
1395 field, which consists of an overloaded name, followed by the
1396 types of arguments that the method expects, and then the name
1397 after it has been renamed to make it distinct.
1399 fn_fieldlists points to an array of nfn_fields of these. */
1401 struct fn_fieldlist
*fn_fieldlists
;
1403 /* * typedefs defined inside this class. typedef_field points to
1404 an array of typedef_field_count elements. */
1406 struct decl_field
*typedef_field
;
1408 unsigned typedef_field_count
;
1410 /* * The nested types defined by this type. nested_types points to
1411 an array of nested_types_count elements. */
1413 struct decl_field
*nested_types
;
1415 unsigned nested_types_count
;
1417 /* * The template arguments. This is an array with
1418 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1421 struct symbol
**template_arguments
;
1424 /* * Struct used to store conversion rankings. */
1430 /* * When two conversions are of the same type and therefore have
1431 the same rank, subrank is used to differentiate the two.
1433 Eg: Two derived-class-pointer to base-class-pointer conversions
1434 would both have base pointer conversion rank, but the
1435 conversion with the shorter distance to the ancestor is
1436 preferable. 'subrank' would be used to reflect that. */
1441 /* * Used for ranking a function for overload resolution. */
1443 typedef std::vector
<rank
> badness_vector
;
1445 /* * GNAT Ada-specific information for various Ada types. */
1447 struct gnat_aux_type
1449 /* * Parallel type used to encode information about dynamic types
1450 used in Ada (such as variant records, variable-size array,
1452 struct type
* descriptive_type
;
1455 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1459 /* * The calling convention for targets supporting multiple ABIs.
1460 Right now this is only fetched from the Dwarf-2
1461 DW_AT_calling_convention attribute. The value is one of the
1464 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1466 /* * Whether this function normally returns to its caller. It is
1467 set from the DW_AT_noreturn attribute if set on the
1468 DW_TAG_subprogram. */
1470 unsigned int is_noreturn
: 1;
1472 /* * Only those DW_TAG_call_site's in this function that have
1473 DW_AT_call_tail_call set are linked in this list. Function
1474 without its tail call list complete
1475 (DW_AT_call_all_tail_calls or its superset
1476 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1477 DW_TAG_call_site's exist in such function. */
1479 struct call_site
*tail_call_list
;
1481 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1482 contains the method. */
1484 struct type
*self_type
;
1487 /* struct call_site_parameter can be referenced in callees by several ways. */
1489 enum call_site_parameter_kind
1491 /* * Use field call_site_parameter.u.dwarf_reg. */
1492 CALL_SITE_PARAMETER_DWARF_REG
,
1494 /* * Use field call_site_parameter.u.fb_offset. */
1495 CALL_SITE_PARAMETER_FB_OFFSET
,
1497 /* * Use field call_site_parameter.u.param_offset. */
1498 CALL_SITE_PARAMETER_PARAM_OFFSET
1501 struct call_site_target
1503 union field_location loc
;
1505 /* * Discriminant for union field_location. */
1507 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1510 union call_site_parameter_u
1512 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1513 as DWARF register number, for register passed
1518 /* * Offset from the callee's frame base, for stack passed
1519 parameters. This equals offset from the caller's stack
1522 CORE_ADDR fb_offset
;
1524 /* * Offset relative to the start of this PER_CU to
1525 DW_TAG_formal_parameter which is referenced by both
1526 caller and the callee. */
1528 cu_offset param_cu_off
;
1531 struct call_site_parameter
1533 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1535 union call_site_parameter_u u
;
1537 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1539 const gdb_byte
*value
;
1542 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1543 It may be NULL if not provided by DWARF. */
1545 const gdb_byte
*data_value
;
1546 size_t data_value_size
;
1549 /* * A place where a function gets called from, represented by
1550 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1554 /* * Address of the first instruction after this call. It must be
1555 the first field as we overload core_addr_hash and core_addr_eq
1560 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1562 struct call_site
*tail_call_next
;
1564 /* * Describe DW_AT_call_target. Missing attribute uses
1565 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1567 struct call_site_target target
;
1569 /* * Size of the PARAMETER array. */
1571 unsigned parameter_count
;
1573 /* * CU of the function where the call is located. It gets used
1574 for DWARF blocks execution in the parameter array below. */
1576 dwarf2_per_cu_data
*per_cu
;
1578 /* objfile of the function where the call is located. */
1580 dwarf2_per_objfile
*per_objfile
;
1582 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1584 struct call_site_parameter parameter
[1];
1587 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1588 static structure. */
1590 extern const struct cplus_struct_type cplus_struct_default
;
1592 extern void allocate_cplus_struct_type (struct type
*);
1594 #define INIT_CPLUS_SPECIFIC(type) \
1595 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1596 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1597 &cplus_struct_default)
1599 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1601 #define HAVE_CPLUS_STRUCT(type) \
1602 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1603 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1605 #define INIT_NONE_SPECIFIC(type) \
1606 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1607 TYPE_MAIN_TYPE (type)->type_specific = {})
1609 extern const struct gnat_aux_type gnat_aux_default
;
1611 extern void allocate_gnat_aux_type (struct type
*);
1613 #define INIT_GNAT_SPECIFIC(type) \
1614 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1615 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1616 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1617 /* * A macro that returns non-zero if the type-specific data should be
1618 read as "gnat-stuff". */
1619 #define HAVE_GNAT_AUX_INFO(type) \
1620 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1622 /* * True if TYPE is known to be an Ada type of some kind. */
1623 #define ADA_TYPE_P(type) \
1624 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1625 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1626 && TYPE_FIXED_INSTANCE (type)))
1628 #define INIT_FUNC_SPECIFIC(type) \
1629 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1630 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1631 TYPE_ZALLOC (type, \
1632 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1634 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1635 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1636 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1637 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1638 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1639 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1640 #define TYPE_CHAIN(thistype) (thistype)->chain
1641 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1642 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1643 so you only have to call check_typedef once. Since allocate_value
1644 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1645 #define TYPE_LENGTH(thistype) (thistype)->length
1647 /* * Return the alignment of the type in target addressable memory
1648 units, or 0 if no alignment was specified. */
1649 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1651 /* * Return the alignment of the type in target addressable memory
1652 units, or 0 if no alignment was specified. */
1653 extern unsigned type_raw_align (struct type
*);
1655 /* * Return the alignment of the type in target addressable memory
1656 units. Return 0 if the alignment cannot be determined; but note
1657 that this makes an effort to compute the alignment even it it was
1658 not specified in the debug info. */
1659 extern unsigned type_align (struct type
*);
1661 /* * Set the alignment of the type. The alignment must be a power of
1662 2. Returns false if the given value does not fit in the available
1663 space in struct type. */
1664 extern bool set_type_align (struct type
*, ULONGEST
);
1666 /* Property accessors for the type data location. */
1667 #define TYPE_DATA_LOCATION(thistype) \
1668 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1669 #define TYPE_DATA_LOCATION_BATON(thistype) \
1670 TYPE_DATA_LOCATION (thistype)->data.baton
1671 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1672 (TYPE_DATA_LOCATION (thistype)->const_val ())
1673 #define TYPE_DATA_LOCATION_KIND(thistype) \
1674 (TYPE_DATA_LOCATION (thistype)->kind ())
1675 #define TYPE_DYNAMIC_LENGTH(thistype) \
1676 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1678 /* Property accessors for the type allocated/associated. */
1679 #define TYPE_ALLOCATED_PROP(thistype) \
1680 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1681 #define TYPE_ASSOCIATED_PROP(thistype) \
1682 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1686 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1687 /* Do not call this, use TYPE_SELF_TYPE. */
1688 extern struct type
*internal_type_self_type (struct type
*);
1689 extern void set_type_self_type (struct type
*, struct type
*);
1691 extern int internal_type_vptr_fieldno (struct type
*);
1692 extern void set_type_vptr_fieldno (struct type
*, int);
1693 extern struct type
*internal_type_vptr_basetype (struct type
*);
1694 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1695 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1696 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1698 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1699 #define TYPE_SPECIFIC_FIELD(thistype) \
1700 TYPE_MAIN_TYPE(thistype)->type_specific_field
1701 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1702 where we're trying to print an Ada array using the C language.
1703 In that case, there is no "cplus_stuff", but the C language assumes
1704 that there is. What we do, in that case, is pretend that there is
1705 an implicit one which is the default cplus stuff. */
1706 #define TYPE_CPLUS_SPECIFIC(thistype) \
1707 (!HAVE_CPLUS_STRUCT(thistype) \
1708 ? (struct cplus_struct_type*)&cplus_struct_default \
1709 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1710 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1711 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1712 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1713 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1714 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1715 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1716 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1717 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1718 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1719 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1720 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1721 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1722 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1723 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1724 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1725 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1727 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1728 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1729 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1731 #define FIELD_NAME(thisfld) ((thisfld).name)
1732 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1733 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1734 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1735 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1736 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1737 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1738 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1739 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1740 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1741 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1742 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1743 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1744 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1745 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1746 #define SET_FIELD_PHYSNAME(thisfld, name) \
1747 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1748 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1749 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1750 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1751 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1752 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1753 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1754 FIELD_DWARF_BLOCK (thisfld) = (addr))
1755 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1756 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1758 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1759 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1760 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1761 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1762 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1763 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1764 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1765 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1766 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1767 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1769 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1770 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1771 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1772 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1773 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1774 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1775 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1776 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1777 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1778 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1779 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1780 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1781 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1782 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1783 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1784 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1785 #define TYPE_FIELD_PRIVATE(thistype, n) \
1786 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1787 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1788 #define TYPE_FIELD_PROTECTED(thistype, n) \
1789 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1790 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1791 #define TYPE_FIELD_IGNORE(thistype, n) \
1792 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1793 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1794 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1795 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1796 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1798 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1799 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1800 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1801 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1802 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1804 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1805 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1806 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1807 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1808 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1809 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1811 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1812 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1813 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1814 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1815 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1816 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1817 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1818 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1819 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1820 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1821 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1822 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1823 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1824 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1825 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1826 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1827 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1829 /* Accessors for typedefs defined by a class. */
1830 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1831 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1832 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1833 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1834 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1835 TYPE_TYPEDEF_FIELD (thistype, n).name
1836 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1837 TYPE_TYPEDEF_FIELD (thistype, n).type
1838 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1839 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1840 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1841 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1842 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1843 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1845 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1846 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1847 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1848 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1849 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1850 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1851 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1852 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1853 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1854 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1855 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1856 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1857 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1858 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1860 #define TYPE_IS_OPAQUE(thistype) \
1861 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1862 || ((thistype)->code () == TYPE_CODE_UNION)) \
1863 && ((thistype)->num_fields () == 0) \
1864 && (!HAVE_CPLUS_STRUCT (thistype) \
1865 || TYPE_NFN_FIELDS (thistype) == 0) \
1866 && ((thistype)->is_stub () || !TYPE_STUB_SUPPORTED (thistype)))
1868 /* * A helper macro that returns the name of a type or "unnamed type"
1869 if the type has no name. */
1871 #define TYPE_SAFE_NAME(type) \
1872 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1874 /* * A helper macro that returns the name of an error type. If the
1875 type has a name, it is used; otherwise, a default is used. */
1877 #define TYPE_ERROR_NAME(type) \
1878 (type->name () ? type->name () : _("<error type>"))
1880 /* Given TYPE, return its floatformat. */
1881 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1885 /* Integral types. */
1887 /* Implicit size/sign (based on the architecture's ABI). */
1888 struct type
*builtin_void
;
1889 struct type
*builtin_char
;
1890 struct type
*builtin_short
;
1891 struct type
*builtin_int
;
1892 struct type
*builtin_long
;
1893 struct type
*builtin_signed_char
;
1894 struct type
*builtin_unsigned_char
;
1895 struct type
*builtin_unsigned_short
;
1896 struct type
*builtin_unsigned_int
;
1897 struct type
*builtin_unsigned_long
;
1898 struct type
*builtin_bfloat16
;
1899 struct type
*builtin_half
;
1900 struct type
*builtin_float
;
1901 struct type
*builtin_double
;
1902 struct type
*builtin_long_double
;
1903 struct type
*builtin_complex
;
1904 struct type
*builtin_double_complex
;
1905 struct type
*builtin_string
;
1906 struct type
*builtin_bool
;
1907 struct type
*builtin_long_long
;
1908 struct type
*builtin_unsigned_long_long
;
1909 struct type
*builtin_decfloat
;
1910 struct type
*builtin_decdouble
;
1911 struct type
*builtin_declong
;
1913 /* "True" character types.
1914 We use these for the '/c' print format, because c_char is just a
1915 one-byte integral type, which languages less laid back than C
1916 will print as ... well, a one-byte integral type. */
1917 struct type
*builtin_true_char
;
1918 struct type
*builtin_true_unsigned_char
;
1920 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1921 is for when an architecture needs to describe a register that has
1923 struct type
*builtin_int0
;
1924 struct type
*builtin_int8
;
1925 struct type
*builtin_uint8
;
1926 struct type
*builtin_int16
;
1927 struct type
*builtin_uint16
;
1928 struct type
*builtin_int24
;
1929 struct type
*builtin_uint24
;
1930 struct type
*builtin_int32
;
1931 struct type
*builtin_uint32
;
1932 struct type
*builtin_int64
;
1933 struct type
*builtin_uint64
;
1934 struct type
*builtin_int128
;
1935 struct type
*builtin_uint128
;
1937 /* Wide character types. */
1938 struct type
*builtin_char16
;
1939 struct type
*builtin_char32
;
1940 struct type
*builtin_wchar
;
1942 /* Pointer types. */
1944 /* * `pointer to data' type. Some target platforms use an implicitly
1945 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1946 struct type
*builtin_data_ptr
;
1948 /* * `pointer to function (returning void)' type. Harvard
1949 architectures mean that ABI function and code pointers are not
1950 interconvertible. Similarly, since ANSI, C standards have
1951 explicitly said that pointers to functions and pointers to data
1952 are not interconvertible --- that is, you can't cast a function
1953 pointer to void * and back, and expect to get the same value.
1954 However, all function pointer types are interconvertible, so void
1955 (*) () can server as a generic function pointer. */
1957 struct type
*builtin_func_ptr
;
1959 /* * `function returning pointer to function (returning void)' type.
1960 The final void return type is not significant for it. */
1962 struct type
*builtin_func_func
;
1964 /* Special-purpose types. */
1966 /* * This type is used to represent a GDB internal function. */
1968 struct type
*internal_fn
;
1970 /* * This type is used to represent an xmethod. */
1971 struct type
*xmethod
;
1974 /* * Return the type table for the specified architecture. */
1976 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1978 /* * Per-objfile types used by symbol readers. */
1982 /* Basic types based on the objfile architecture. */
1983 struct type
*builtin_void
;
1984 struct type
*builtin_char
;
1985 struct type
*builtin_short
;
1986 struct type
*builtin_int
;
1987 struct type
*builtin_long
;
1988 struct type
*builtin_long_long
;
1989 struct type
*builtin_signed_char
;
1990 struct type
*builtin_unsigned_char
;
1991 struct type
*builtin_unsigned_short
;
1992 struct type
*builtin_unsigned_int
;
1993 struct type
*builtin_unsigned_long
;
1994 struct type
*builtin_unsigned_long_long
;
1995 struct type
*builtin_half
;
1996 struct type
*builtin_float
;
1997 struct type
*builtin_double
;
1998 struct type
*builtin_long_double
;
2000 /* * This type is used to represent symbol addresses. */
2001 struct type
*builtin_core_addr
;
2003 /* * This type represents a type that was unrecognized in symbol
2005 struct type
*builtin_error
;
2007 /* * Types used for symbols with no debug information. */
2008 struct type
*nodebug_text_symbol
;
2009 struct type
*nodebug_text_gnu_ifunc_symbol
;
2010 struct type
*nodebug_got_plt_symbol
;
2011 struct type
*nodebug_data_symbol
;
2012 struct type
*nodebug_unknown_symbol
;
2013 struct type
*nodebug_tls_symbol
;
2016 /* * Return the type table for the specified objfile. */
2018 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
2020 /* Explicit floating-point formats. See "floatformat.h". */
2021 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
2022 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
2023 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
2024 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
2025 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
2026 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
2027 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
2028 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
2029 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
2030 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
2031 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
2032 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
2033 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
2035 /* Allocate space for storing data associated with a particular
2036 type. We ensure that the space is allocated using the same
2037 mechanism that was used to allocate the space for the type
2038 structure itself. I.e. if the type is on an objfile's
2039 objfile_obstack, then the space for data associated with that type
2040 will also be allocated on the objfile_obstack. If the type is
2041 associated with a gdbarch, then the space for data associated with that
2042 type will also be allocated on the gdbarch_obstack.
2044 If a type is not associated with neither an objfile or a gdbarch then
2045 you should not use this macro to allocate space for data, instead you
2046 should call xmalloc directly, and ensure the memory is correctly freed
2047 when it is no longer needed. */
2049 #define TYPE_ALLOC(t,size) \
2050 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2051 ? &TYPE_OBJFILE (t)->objfile_obstack \
2052 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2056 /* See comment on TYPE_ALLOC. */
2058 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2060 /* Use alloc_type to allocate a type owned by an objfile. Use
2061 alloc_type_arch to allocate a type owned by an architecture. Use
2062 alloc_type_copy to allocate a type with the same owner as a
2063 pre-existing template type, no matter whether objfile or
2065 extern struct type
*alloc_type (struct objfile
*);
2066 extern struct type
*alloc_type_arch (struct gdbarch
*);
2067 extern struct type
*alloc_type_copy (const struct type
*);
2069 /* * Return the type's architecture. For types owned by an
2070 architecture, that architecture is returned. For types owned by an
2071 objfile, that objfile's architecture is returned. */
2073 extern struct gdbarch
*get_type_arch (const struct type
*);
2075 /* * This returns the target type (or NULL) of TYPE, also skipping
2078 extern struct type
*get_target_type (struct type
*type
);
2080 /* Return the equivalent of TYPE_LENGTH, but in number of target
2081 addressable memory units of the associated gdbarch instead of bytes. */
2083 extern unsigned int type_length_units (struct type
*type
);
2085 /* * Helper function to construct objfile-owned types. */
2087 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2089 extern struct type
*init_integer_type (struct objfile
*, int, int,
2091 extern struct type
*init_character_type (struct objfile
*, int, int,
2093 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2095 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2096 const struct floatformat
**,
2097 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2098 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2099 extern struct type
*init_complex_type (const char *, struct type
*);
2100 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2103 /* Helper functions to construct architecture-owned types. */
2104 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2106 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2108 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2110 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2112 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2113 const struct floatformat
**);
2114 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2115 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2118 /* Helper functions to construct a struct or record type. An
2119 initially empty type is created using arch_composite_type().
2120 Fields are then added using append_composite_type_field*(). A union
2121 type has its size set to the largest field. A struct type has each
2122 field packed against the previous. */
2124 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2125 const char *name
, enum type_code code
);
2126 extern void append_composite_type_field (struct type
*t
, const char *name
,
2127 struct type
*field
);
2128 extern void append_composite_type_field_aligned (struct type
*t
,
2132 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2133 struct type
*field
);
2135 /* Helper functions to construct a bit flags type. An initially empty
2136 type is created using arch_flag_type(). Flags are then added using
2137 append_flag_type_field() and append_flag_type_flag(). */
2138 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2139 const char *name
, int bit
);
2140 extern void append_flags_type_field (struct type
*type
,
2141 int start_bitpos
, int nr_bits
,
2142 struct type
*field_type
, const char *name
);
2143 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2146 extern void make_vector_type (struct type
*array_type
);
2147 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2149 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2150 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2151 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2154 extern struct type
*make_reference_type (struct type
*, struct type
**,
2157 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2159 extern struct type
*make_restrict_type (struct type
*);
2161 extern struct type
*make_unqualified_type (struct type
*);
2163 extern struct type
*make_atomic_type (struct type
*);
2165 extern void replace_type (struct type
*, struct type
*);
2167 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2169 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2171 extern struct type
*make_type_with_address_space (struct type
*type
,
2172 int space_identifier
);
2174 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2176 extern struct type
*lookup_methodptr_type (struct type
*);
2178 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2179 struct type
*to_type
, struct field
*args
,
2180 int nargs
, int varargs
);
2182 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2185 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2187 extern struct type
*allocate_stub_method (struct type
*);
2189 extern const char *type_name_or_error (struct type
*type
);
2193 /* The field of the element, or NULL if no element was found. */
2194 struct field
*field
;
2196 /* The bit offset of the element in the parent structure. */
2200 /* Given a type TYPE, lookup the field and offset of the component named
2203 TYPE can be either a struct or union, or a pointer or reference to
2204 a struct or union. If it is a pointer or reference, its target
2205 type is automatically used. Thus '.' and '->' are interchangable,
2206 as specified for the definitions of the expression element types
2207 STRUCTOP_STRUCT and STRUCTOP_PTR.
2209 If NOERR is nonzero, the returned structure will have field set to
2210 NULL if there is no component named NAME.
2212 If the component NAME is a field in an anonymous substructure of
2213 TYPE, the returned offset is a "global" offset relative to TYPE
2214 rather than an offset within the substructure. */
2216 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2218 /* Given a type TYPE, lookup the type of the component named NAME.
2220 TYPE can be either a struct or union, or a pointer or reference to
2221 a struct or union. If it is a pointer or reference, its target
2222 type is automatically used. Thus '.' and '->' are interchangable,
2223 as specified for the definitions of the expression element types
2224 STRUCTOP_STRUCT and STRUCTOP_PTR.
2226 If NOERR is nonzero, return NULL if there is no component named
2229 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2231 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2233 extern struct type
*lookup_pointer_type (struct type
*);
2235 extern struct type
*make_function_type (struct type
*, struct type
**);
2237 extern struct type
*lookup_function_type (struct type
*);
2239 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2243 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2247 extern struct type
*create_array_type_with_stride
2248 (struct type
*, struct type
*, struct type
*,
2249 struct dynamic_prop
*, unsigned int);
2251 extern struct type
*create_range_type (struct type
*, struct type
*,
2252 const struct dynamic_prop
*,
2253 const struct dynamic_prop
*,
2256 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2257 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2260 extern struct type
* create_range_type_with_stride
2261 (struct type
*result_type
, struct type
*index_type
,
2262 const struct dynamic_prop
*low_bound
,
2263 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2264 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2266 extern struct type
*create_array_type (struct type
*, struct type
*,
2269 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2271 extern struct type
*create_string_type (struct type
*, struct type
*,
2273 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2275 extern struct type
*create_set_type (struct type
*, struct type
*);
2277 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2280 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2283 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2285 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2287 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2288 ADDR specifies the location of the variable the type is bound to.
2289 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2290 static properties is returned. */
2291 extern struct type
*resolve_dynamic_type
2292 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2295 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2296 extern int is_dynamic_type (struct type
*type
);
2298 extern struct type
*check_typedef (struct type
*);
2300 extern void check_stub_method_group (struct type
*, int);
2302 extern char *gdb_mangle_name (struct type
*, int, int);
2304 extern struct type
*lookup_typename (const struct language_defn
*,
2305 const char *, const struct block
*, int);
2307 extern struct type
*lookup_template_type (const char *, struct type
*,
2308 const struct block
*);
2310 extern int get_vptr_fieldno (struct type
*, struct type
**);
2312 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2314 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2315 LONGEST
*high_bound
);
2317 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2319 extern int class_types_same_p (const struct type
*, const struct type
*);
2321 extern int is_ancestor (struct type
*, struct type
*);
2323 extern int is_public_ancestor (struct type
*, struct type
*);
2325 extern int is_unique_ancestor (struct type
*, struct value
*);
2327 /* Overload resolution */
2329 /* * Badness if parameter list length doesn't match arg list length. */
2330 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2332 /* * Dummy badness value for nonexistent parameter positions. */
2333 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2334 /* * Badness if no conversion among types. */
2335 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2337 /* * Badness of an exact match. */
2338 extern const struct rank EXACT_MATCH_BADNESS
;
2340 /* * Badness of integral promotion. */
2341 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2342 /* * Badness of floating promotion. */
2343 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2344 /* * Badness of converting a derived class pointer
2345 to a base class pointer. */
2346 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2347 /* * Badness of integral conversion. */
2348 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2349 /* * Badness of floating conversion. */
2350 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2351 /* * Badness of integer<->floating conversions. */
2352 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2353 /* * Badness of conversion of pointer to void pointer. */
2354 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2355 /* * Badness of conversion to boolean. */
2356 extern const struct rank BOOL_CONVERSION_BADNESS
;
2357 /* * Badness of converting derived to base class. */
2358 extern const struct rank BASE_CONVERSION_BADNESS
;
2359 /* * Badness of converting from non-reference to reference. Subrank
2360 is the type of reference conversion being done. */
2361 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2362 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2363 /* * Conversion to rvalue reference. */
2364 #define REFERENCE_CONVERSION_RVALUE 1
2365 /* * Conversion to const lvalue reference. */
2366 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2368 /* * Badness of converting integer 0 to NULL pointer. */
2369 extern const struct rank NULL_POINTER_CONVERSION
;
2370 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2372 extern const struct rank CV_CONVERSION_BADNESS
;
2373 #define CV_CONVERSION_CONST 1
2374 #define CV_CONVERSION_VOLATILE 2
2376 /* Non-standard conversions allowed by the debugger */
2378 /* * Converting a pointer to an int is usually OK. */
2379 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2381 /* * Badness of converting a (non-zero) integer constant
2383 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2385 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2386 extern int compare_ranks (struct rank a
, struct rank b
);
2388 extern int compare_badness (const badness_vector
&,
2389 const badness_vector
&);
2391 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2392 gdb::array_view
<value
*> args
);
2394 extern struct rank
rank_one_type (struct type
*, struct type
*,
2397 extern void recursive_dump_type (struct type
*, int);
2399 extern int field_is_static (struct field
*);
2403 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2404 const struct value_print_options
*,
2405 int, struct ui_file
*);
2407 extern int can_dereference (struct type
*);
2409 extern int is_integral_type (struct type
*);
2411 extern int is_floating_type (struct type
*);
2413 extern int is_scalar_type (struct type
*type
);
2415 extern int is_scalar_type_recursive (struct type
*);
2417 extern int class_or_union_p (const struct type
*);
2419 extern void maintenance_print_type (const char *, int);
2421 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2423 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2425 htab_t copied_types
);
2427 extern struct type
*copy_type (const struct type
*type
);
2429 extern bool types_equal (struct type
*, struct type
*);
2431 extern bool types_deeply_equal (struct type
*, struct type
*);
2433 extern int type_not_allocated (const struct type
*type
);
2435 extern int type_not_associated (const struct type
*type
);
2437 /* * When the type includes explicit byte ordering, return that.
2438 Otherwise, the byte ordering from gdbarch_byte_order for
2439 get_type_arch is returned. */
2441 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2443 /* A flag to enable printing of debugging information of C++
2446 extern unsigned int overload_debug
;
2448 #endif /* GDBTYPES_H */