2 /* Internal type definitions for GDB.
4 Copyright (C) 1992-2020 Free Software Foundation, Inc.
6 Contributed by Cygnus Support, using pieces from other GDB modules.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #if !defined (GDBTYPES_H)
26 /* * \page gdbtypes GDB Types
28 GDB represents all the different kinds of types in programming
29 languages using a common representation defined in gdbtypes.h.
31 The main data structure is main_type; it consists of a code (such
32 as #TYPE_CODE_ENUM for enumeration types), a number of
33 generally-useful fields such as the printable name, and finally a
34 field main_type::type_specific that is a union of info specific to
35 particular languages or other special cases (such as calling
38 The available type codes are defined in enum #type_code. The enum
39 includes codes both for types that are common across a variety
40 of languages, and for types that are language-specific.
42 Most accesses to type fields go through macros such as
43 #TYPE_CODE(thistype) and #TYPE_FN_FIELD_CONST(thisfn, n). These are
44 written such that they can be used as both rvalues and lvalues.
48 #include "gdbsupport/array-view.h"
49 #include "gdbsupport/offset-type.h"
50 #include "gdbsupport/enum-flags.h"
51 #include "gdbsupport/underlying.h"
52 #include "gdbsupport/print-utils.h"
54 #include "gdb_obstack.h"
56 /* Forward declarations for prototypes. */
59 struct value_print_options
;
61 struct dwarf2_per_cu_data
;
62 struct dwarf2_per_objfile
;
64 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
65 are already DWARF-specific. */
67 /* * Offset relative to the start of its containing CU (compilation
69 DEFINE_OFFSET_TYPE (cu_offset
, unsigned int);
71 /* * Offset relative to the start of its .debug_info or .debug_types
73 DEFINE_OFFSET_TYPE (sect_offset
, uint64_t);
76 sect_offset_str (sect_offset offset
)
78 return hex_string (to_underlying (offset
));
81 /* Some macros for char-based bitfields. */
83 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
84 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
85 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
86 #define B_TYPE unsigned char
87 #define B_BYTES(x) ( 1 + ((x)>>3) )
88 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
90 /* * Different kinds of data types are distinguished by the `code'
95 TYPE_CODE_BITSTRING
= -1, /**< Deprecated */
96 TYPE_CODE_UNDEF
= 0, /**< Not used; catches errors */
97 TYPE_CODE_PTR
, /**< Pointer type */
99 /* * Array type with lower & upper bounds.
101 Regardless of the language, GDB represents multidimensional
102 array types the way C does: as arrays of arrays. So an
103 instance of a GDB array type T can always be seen as a series
104 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
107 Row-major languages like C lay out multi-dimensional arrays so
108 that incrementing the rightmost index in a subscripting
109 expression results in the smallest change in the address of the
110 element referred to. Column-major languages like Fortran lay
111 them out so that incrementing the leftmost index results in the
114 This means that, in column-major languages, working our way
115 from type to target type corresponds to working through indices
116 from right to left, not left to right. */
119 TYPE_CODE_STRUCT
, /**< C struct or Pascal record */
120 TYPE_CODE_UNION
, /**< C union or Pascal variant part */
121 TYPE_CODE_ENUM
, /**< Enumeration type */
122 TYPE_CODE_FLAGS
, /**< Bit flags type */
123 TYPE_CODE_FUNC
, /**< Function type */
124 TYPE_CODE_INT
, /**< Integer type */
126 /* * Floating type. This is *NOT* a complex type. */
129 /* * Void type. The length field specifies the length (probably
130 always one) which is used in pointer arithmetic involving
131 pointers to this type, but actually dereferencing such a
132 pointer is invalid; a void type has no length and no actual
133 representation in memory or registers. A pointer to a void
134 type is a generic pointer. */
137 TYPE_CODE_SET
, /**< Pascal sets */
138 TYPE_CODE_RANGE
, /**< Range (integers within spec'd bounds). */
140 /* * A string type which is like an array of character but prints
141 differently. It does not contain a length field as Pascal
142 strings (for many Pascals, anyway) do; if we want to deal with
143 such strings, we should use a new type code. */
146 /* * Unknown type. The length field is valid if we were able to
147 deduce that much about the type, or 0 if we don't even know
152 TYPE_CODE_METHOD
, /**< Method type */
154 /* * Pointer-to-member-function type. This describes how to access a
155 particular member function of a class (possibly a virtual
156 member function). The representation may vary between different
160 /* * Pointer-to-member type. This is the offset within a class to
161 some particular data member. The only currently supported
162 representation uses an unbiased offset, with -1 representing
163 NULL; this is used by the Itanium C++ ABI (used by GCC on all
167 TYPE_CODE_REF
, /**< C++ Reference types */
169 TYPE_CODE_RVALUE_REF
, /**< C++ rvalue reference types */
171 TYPE_CODE_CHAR
, /**< *real* character type */
173 /* * Boolean type. 0 is false, 1 is true, and other values are
174 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
178 TYPE_CODE_COMPLEX
, /**< Complex float */
182 TYPE_CODE_NAMESPACE
, /**< C++ namespace. */
184 TYPE_CODE_DECFLOAT
, /**< Decimal floating point. */
186 TYPE_CODE_MODULE
, /**< Fortran module. */
188 /* * Internal function type. */
189 TYPE_CODE_INTERNAL_FUNCTION
,
191 /* * Methods implemented in extension languages. */
195 /* * Some bits for the type's instance_flags word. See the macros
196 below for documentation on each bit. */
198 enum type_instance_flag_value
: unsigned
200 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
201 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
202 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
203 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
204 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
205 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5),
206 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
207 TYPE_INSTANCE_FLAG_RESTRICT
= (1 << 7),
208 TYPE_INSTANCE_FLAG_ATOMIC
= (1 << 8)
211 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value
, type_instance_flags
);
213 /* * Unsigned integer type. If this is not set for a TYPE_CODE_INT,
214 the type is signed (unless TYPE_NOSIGN (below) is set). */
216 #define TYPE_UNSIGNED(t) ((t)->is_unsigned ())
218 /* * No sign for this type. In C++, "char", "signed char", and
219 "unsigned char" are distinct types; so we need an extra flag to
220 indicate the absence of a sign! */
222 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
224 /* * A compiler may supply dwarf instrumentation
225 that indicates the desired endian interpretation of the variable
226 differs from the native endian representation. */
228 #define TYPE_ENDIANITY_NOT_DEFAULT(t) (TYPE_MAIN_TYPE (t)->flag_endianity_not_default)
230 /* * This appears in a type's flags word if it is a stub type (e.g.,
231 if someone referenced a type that wasn't defined in a source file
232 via (struct sir_not_appearing_in_this_film *)). */
234 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
236 /* * The target type of this type is a stub type, and this type needs
237 to be updated if it gets un-stubbed in check_typedef. Used for
238 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
239 based on the TYPE_LENGTH of the target type. Also, set for
240 TYPE_CODE_TYPEDEF. */
242 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
244 /* * This is a function type which appears to have a prototype. We
245 need this for function calls in order to tell us if it's necessary
246 to coerce the args, or to just do the standard conversions. This
247 is used with a short field. */
249 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
251 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
254 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
256 /* * Identify a vector type. Gcc is handling this by adding an extra
257 attribute to the array type. We slurp that in as a new flag of a
258 type. This is used only in dwarf2read.c. */
259 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
261 /* * The debugging formats (especially STABS) do not contain enough
262 information to represent all Ada types---especially those whose
263 size depends on dynamic quantities. Therefore, the GNAT Ada
264 compiler includes extra information in the form of additional type
265 definitions connected by naming conventions. This flag indicates
266 that the type is an ordinary (unencoded) GDB type that has been
267 created from the necessary run-time information, and does not need
268 further interpretation. Optionally marks ordinary, fixed-size GDB
271 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
273 /* * This debug target supports TYPE_STUB(t). In the unsupported case
274 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
275 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
276 guessed the TYPE_STUB(t) value (see dwarfread.c). */
278 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
280 /* * Not textual. By default, GDB treats all single byte integers as
281 characters (or elements of strings) unless this flag is set. */
283 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
285 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
286 address is returned by this function call. TYPE_TARGET_TYPE
287 determines the final returned function type to be presented to
290 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
292 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
293 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
294 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
296 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
297 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
298 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
300 /* * True if this type was declared using the "class" keyword. This is
301 only valid for C++ structure and enum types. If false, a structure
302 was declared as a "struct"; if true it was declared "class". For
303 enum types, this is true when "enum class" or "enum struct" was
304 used to declare the type.. */
306 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
308 /* * True if this type is a "flag" enum. A flag enum is one where all
309 the values are pairwise disjoint when "and"ed together. This
310 affects how enum values are printed. */
312 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
314 /* * Constant type. If this is set, the corresponding type has a
317 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
319 /* * Volatile type. If this is set, the corresponding type has a
320 volatile modifier. */
322 #define TYPE_VOLATILE(t) \
323 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
325 /* * Restrict type. If this is set, the corresponding type has a
326 restrict modifier. */
328 #define TYPE_RESTRICT(t) \
329 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
331 /* * Atomic type. If this is set, the corresponding type has an
334 #define TYPE_ATOMIC(t) \
335 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
337 /* * True if this type represents either an lvalue or lvalue reference type. */
339 #define TYPE_IS_REFERENCE(t) \
340 ((t)->code () == TYPE_CODE_REF || (t)->code () == TYPE_CODE_RVALUE_REF)
342 /* * True if this type is allocatable. */
343 #define TYPE_IS_ALLOCATABLE(t) \
344 ((t)->dyn_prop (DYN_PROP_ALLOCATED) != NULL)
346 /* * True if this type has variant parts. */
347 #define TYPE_HAS_VARIANT_PARTS(t) \
348 ((t)->dyn_prop (DYN_PROP_VARIANT_PARTS) != nullptr)
350 /* * True if this type has a dynamic length. */
351 #define TYPE_HAS_DYNAMIC_LENGTH(t) \
352 ((t)->dyn_prop (DYN_PROP_BYTE_SIZE) != nullptr)
354 /* * Instruction-space delimited type. This is for Harvard architectures
355 which have separate instruction and data address spaces (and perhaps
358 GDB usually defines a flat address space that is a superset of the
359 architecture's two (or more) address spaces, but this is an extension
360 of the architecture's model.
362 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
363 resides in instruction memory, even if its address (in the extended
364 flat address space) does not reflect this.
366 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
367 corresponding type resides in the data memory space, even if
368 this is not indicated by its (flat address space) address.
370 If neither flag is set, the default space for functions / methods
371 is instruction space, and for data objects is data memory. */
373 #define TYPE_CODE_SPACE(t) \
374 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
376 #define TYPE_DATA_SPACE(t) \
377 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
379 /* * Address class flags. Some environments provide for pointers
380 whose size is different from that of a normal pointer or address
381 types where the bits are interpreted differently than normal
382 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
383 target specific ways to represent these different types of address
386 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
387 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
388 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
389 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
390 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
391 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
392 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
393 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
395 /* * Information about a single discriminant. */
397 struct discriminant_range
399 /* * The range of values for the variant. This is an inclusive
403 /* * Return true if VALUE is contained in this range. IS_UNSIGNED
404 is true if this should be an unsigned comparison; false for
406 bool contains (ULONGEST value
, bool is_unsigned
) const
409 return value
>= low
&& value
<= high
;
410 LONGEST valuel
= (LONGEST
) value
;
411 return valuel
>= (LONGEST
) low
&& valuel
<= (LONGEST
) high
;
417 /* * A single variant. A variant has a list of discriminant values.
418 When the discriminator matches one of these, the variant is
419 enabled. Each variant controls zero or more fields; and may also
420 control other variant parts as well. This struct corresponds to
421 DW_TAG_variant in DWARF. */
423 struct variant
: allocate_on_obstack
425 /* * The discriminant ranges for this variant. */
426 gdb::array_view
<discriminant_range
> discriminants
;
428 /* * The fields controlled by this variant. This is inclusive on
429 the low end and exclusive on the high end. A variant may not
430 control any fields, in which case the two values will be equal.
431 These are indexes into the type's array of fields. */
435 /* * Variant parts controlled by this variant. */
436 gdb::array_view
<variant_part
> parts
;
438 /* * Return true if this is the default variant. The default
439 variant can be recognized because it has no associated
441 bool is_default () const
443 return discriminants
.empty ();
446 /* * Return true if this variant matches VALUE. IS_UNSIGNED is true
447 if this should be an unsigned comparison; false for signed. */
448 bool matches (ULONGEST value
, bool is_unsigned
) const;
451 /* * A variant part. Each variant part has an optional discriminant
452 and holds an array of variants. This struct corresponds to
453 DW_TAG_variant_part in DWARF. */
455 struct variant_part
: allocate_on_obstack
457 /* * The index of the discriminant field in the outer type. This is
458 an index into the type's array of fields. If this is -1, there
459 is no discriminant, and only the default variant can be
460 considered to be selected. */
461 int discriminant_index
;
463 /* * True if this discriminant is unsigned; false if signed. This
464 comes from the type of the discriminant. */
467 /* * The variants that are controlled by this variant part. Note
468 that these will always be sorted by field number. */
469 gdb::array_view
<variant
> variants
;
473 enum dynamic_prop_kind
475 PROP_UNDEFINED
, /* Not defined. */
476 PROP_CONST
, /* Constant. */
477 PROP_ADDR_OFFSET
, /* Address offset. */
478 PROP_LOCEXPR
, /* Location expression. */
479 PROP_LOCLIST
, /* Location list. */
480 PROP_VARIANT_PARTS
, /* Variant parts. */
481 PROP_TYPE
, /* Type. */
484 union dynamic_prop_data
486 /* Storage for constant property. */
490 /* Storage for dynamic property. */
494 /* Storage of variant parts for a type. A type with variant parts
495 has all its fields "linearized" -- stored in a single field
496 array, just as if they had all been declared that way. The
497 variant parts are attached via a dynamic property, and then are
498 used to control which fields end up in the final type during
499 dynamic type resolution. */
501 const gdb::array_view
<variant_part
> *variant_parts
;
503 /* Once a variant type is resolved, we may want to be able to go
504 from the resolved type to the original type. In this case we
505 rewrite the property's kind and set this field. */
507 struct type
*original_type
;
510 /* * Used to store a dynamic property. */
514 dynamic_prop_kind
kind () const
519 void set_undefined ()
521 m_kind
= PROP_UNDEFINED
;
524 LONGEST
const_val () const
526 gdb_assert (m_kind
== PROP_CONST
);
528 return m_data
.const_val
;
531 void set_const_val (LONGEST const_val
)
534 m_data
.const_val
= const_val
;
539 gdb_assert (m_kind
== PROP_LOCEXPR
540 || m_kind
== PROP_LOCLIST
541 || m_kind
== PROP_ADDR_OFFSET
);
546 void set_locexpr (void *baton
)
548 m_kind
= PROP_LOCEXPR
;
549 m_data
.baton
= baton
;
552 void set_loclist (void *baton
)
554 m_kind
= PROP_LOCLIST
;
555 m_data
.baton
= baton
;
558 void set_addr_offset (void *baton
)
560 m_kind
= PROP_ADDR_OFFSET
;
561 m_data
.baton
= baton
;
564 const gdb::array_view
<variant_part
> *variant_parts () const
566 gdb_assert (m_kind
== PROP_VARIANT_PARTS
);
568 return m_data
.variant_parts
;
571 void set_variant_parts (gdb::array_view
<variant_part
> *variant_parts
)
573 m_kind
= PROP_VARIANT_PARTS
;
574 m_data
.variant_parts
= variant_parts
;
577 struct type
*original_type () const
579 gdb_assert (m_kind
== PROP_TYPE
);
581 return m_data
.original_type
;
584 void set_original_type (struct type
*original_type
)
587 m_data
.original_type
= original_type
;
590 /* Determine which field of the union dynamic_prop.data is used. */
591 enum dynamic_prop_kind m_kind
;
593 /* Storage for dynamic or static value. */
594 union dynamic_prop_data m_data
;
597 /* Compare two dynamic_prop objects for equality. dynamic_prop
598 instances are equal iff they have the same type and storage. */
599 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
601 /* Compare two dynamic_prop objects for inequality. */
602 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
607 /* * Define a type's dynamic property node kind. */
608 enum dynamic_prop_node_kind
610 /* A property providing a type's data location.
611 Evaluating this field yields to the location of an object's data. */
612 DYN_PROP_DATA_LOCATION
,
614 /* A property representing DW_AT_allocated. The presence of this attribute
615 indicates that the object of the type can be allocated/deallocated. */
618 /* A property representing DW_AT_associated. The presence of this attribute
619 indicated that the object of the type can be associated. */
622 /* A property providing an array's byte stride. */
623 DYN_PROP_BYTE_STRIDE
,
625 /* A property holding variant parts. */
626 DYN_PROP_VARIANT_PARTS
,
628 /* A property holding the size of the type. */
632 /* * List for dynamic type attributes. */
633 struct dynamic_prop_list
635 /* The kind of dynamic prop in this node. */
636 enum dynamic_prop_node_kind prop_kind
;
638 /* The dynamic property itself. */
639 struct dynamic_prop prop
;
641 /* A pointer to the next dynamic property. */
642 struct dynamic_prop_list
*next
;
645 /* * Determine which field of the union main_type.fields[x].loc is
650 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
651 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
652 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
653 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
654 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
657 /* * A discriminant to determine which field in the
658 main_type.type_specific union is being used, if any.
660 For types such as TYPE_CODE_FLT, the use of this
661 discriminant is really redundant, as we know from the type code
662 which field is going to be used. As such, it would be possible to
663 reduce the size of this enum in order to save a bit or two for
664 other fields of struct main_type. But, since we still have extra
665 room , and for the sake of clarity and consistency, we treat all fields
666 of the union the same way. */
668 enum type_specific_kind
671 TYPE_SPECIFIC_CPLUS_STUFF
,
672 TYPE_SPECIFIC_GNAT_STUFF
,
673 TYPE_SPECIFIC_FLOATFORMAT
,
674 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
676 TYPE_SPECIFIC_SELF_TYPE
681 struct objfile
*objfile
;
682 struct gdbarch
*gdbarch
;
687 /* * Position of this field, counting in bits from start of
688 containing structure. For big-endian targets, it is the bit
689 offset to the MSB. For little-endian targets, it is the bit
690 offset to the LSB. */
697 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
698 physaddr is the location (in the target) of the static
699 field. Otherwise, physname is the mangled label of the
703 const char *physname
;
705 /* * The field location can be computed by evaluating the
706 following DWARF block. Its DATA is allocated on
707 objfile_obstack - no CU load is needed to access it. */
709 struct dwarf2_locexpr_baton
*dwarf_block
;
714 struct type
*type () const
719 void set_type (struct type
*type
)
724 union field_location loc
;
726 /* * For a function or member type, this is 1 if the argument is
727 marked artificial. Artificial arguments should not be shown
728 to the user. For TYPE_CODE_RANGE it is set if the specific
729 bound is not defined. */
731 unsigned int artificial
: 1;
733 /* * Discriminant for union field_location. */
735 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
737 /* * Size of this field, in bits, or zero if not packed.
738 If non-zero in an array type, indicates the element size in
739 bits (used only in Ada at the moment).
740 For an unpacked field, the field's type's length
741 says how many bytes the field occupies. */
743 unsigned int bitsize
: 28;
745 /* * In a struct or union type, type of this field.
746 - In a function or member type, type of this argument.
747 - In an array type, the domain-type of the array. */
751 /* * Name of field, value or argument.
752 NULL for range bounds, array domains, and member function
760 ULONGEST
bit_stride () const
762 if (this->flag_is_byte_stride
)
763 return this->stride
.const_val () * 8;
765 return this->stride
.const_val ();
768 /* * Low bound of range. */
770 struct dynamic_prop low
;
772 /* * High bound of range. */
774 struct dynamic_prop high
;
776 /* The stride value for this range. This can be stored in bits or bytes
777 based on the value of BYTE_STRIDE_P. It is optional to have a stride
778 value, if this range has no stride value defined then this will be set
779 to the constant zero. */
781 struct dynamic_prop stride
;
783 /* * The bias. Sometimes a range value is biased before storage.
784 The bias is added to the stored bits to form the true value. */
788 /* True if HIGH range bound contains the number of elements in the
789 subrange. This affects how the final high bound is computed. */
791 unsigned int flag_upper_bound_is_count
: 1;
793 /* True if LOW or/and HIGH are resolved into a static bound from
796 unsigned int flag_bound_evaluated
: 1;
798 /* If this is true this STRIDE is in bytes, otherwise STRIDE is in bits. */
800 unsigned int flag_is_byte_stride
: 1;
803 /* Compare two range_bounds objects for equality. Simply does
804 memberwise comparison. */
805 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
807 /* Compare two range_bounds objects for inequality. */
808 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
815 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
816 point to cplus_struct_default, a default static instance of a
817 struct cplus_struct_type. */
819 struct cplus_struct_type
*cplus_stuff
;
821 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
822 provides additional information. */
824 struct gnat_aux_type
*gnat_stuff
;
826 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
827 floatformat object that describes the floating-point value
828 that resides within the type. */
830 const struct floatformat
*floatformat
;
832 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
834 struct func_type
*func_stuff
;
836 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
837 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
840 struct type
*self_type
;
843 /* * Main structure representing a type in GDB.
845 This structure is space-critical. Its layout has been tweaked to
846 reduce the space used. */
850 /* * Code for kind of type. */
852 ENUM_BITFIELD(type_code
) code
: 8;
854 /* * Flags about this type. These fields appear at this location
855 because they packs nicely here. See the TYPE_* macros for
856 documentation about these fields. */
858 unsigned int m_flag_unsigned
: 1;
859 unsigned int flag_nosign
: 1;
860 unsigned int flag_stub
: 1;
861 unsigned int flag_target_stub
: 1;
862 unsigned int flag_prototyped
: 1;
863 unsigned int flag_varargs
: 1;
864 unsigned int flag_vector
: 1;
865 unsigned int flag_stub_supported
: 1;
866 unsigned int flag_gnu_ifunc
: 1;
867 unsigned int flag_fixed_instance
: 1;
868 unsigned int flag_objfile_owned
: 1;
869 unsigned int flag_endianity_not_default
: 1;
871 /* * True if this type was declared with "class" rather than
874 unsigned int flag_declared_class
: 1;
876 /* * True if this is an enum type with disjoint values. This
877 affects how the enum is printed. */
879 unsigned int flag_flag_enum
: 1;
881 /* * A discriminant telling us which field of the type_specific
882 union is being used for this type, if any. */
884 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
886 /* * Number of fields described for this type. This field appears
887 at this location because it packs nicely here. */
891 /* * Name of this type, or NULL if none.
893 This is used for printing only. For looking up a name, look for
894 a symbol in the VAR_DOMAIN. This is generally allocated in the
895 objfile's obstack. However coffread.c uses malloc. */
899 /* * Every type is now associated with a particular objfile, and the
900 type is allocated on the objfile_obstack for that objfile. One
901 problem however, is that there are times when gdb allocates new
902 types while it is not in the process of reading symbols from a
903 particular objfile. Fortunately, these happen when the type
904 being created is a derived type of an existing type, such as in
905 lookup_pointer_type(). So we can just allocate the new type
906 using the same objfile as the existing type, but to do this we
907 need a backpointer to the objfile from the existing type. Yes
908 this is somewhat ugly, but without major overhaul of the internal
909 type system, it can't be avoided for now. */
911 union type_owner owner
;
913 /* * For a pointer type, describes the type of object pointed to.
914 - For an array type, describes the type of the elements.
915 - For a function or method type, describes the type of the return value.
916 - For a range type, describes the type of the full range.
917 - For a complex type, describes the type of each coordinate.
918 - For a special record or union type encoding a dynamic-sized type
919 in GNAT, a memoized pointer to a corresponding static version of
921 - Unused otherwise. */
923 struct type
*target_type
;
925 /* * For structure and union types, a description of each field.
926 For set and pascal array types, there is one "field",
927 whose type is the domain type of the set or array.
928 For range types, there are two "fields",
929 the minimum and maximum values (both inclusive).
930 For enum types, each possible value is described by one "field".
931 For a function or method type, a "field" for each parameter.
932 For C++ classes, there is one field for each base class (if it is
933 a derived class) plus one field for each class data member. Member
934 functions are recorded elsewhere.
936 Using a pointer to a separate array of fields
937 allows all types to have the same size, which is useful
938 because we can allocate the space for a type before
939 we know what to put in it. */
943 struct field
*fields
;
945 /* * Union member used for range types. */
947 struct range_bounds
*bounds
;
949 /* If this is a scalar type, then this is its corresponding
951 struct type
*complex_type
;
955 /* * Slot to point to additional language-specific fields of this
958 union type_specific type_specific
;
960 /* * Contains all dynamic type properties. */
961 struct dynamic_prop_list
*dyn_prop_list
;
964 /* * Number of bits allocated for alignment. */
966 #define TYPE_ALIGN_BITS 8
968 /* * A ``struct type'' describes a particular instance of a type, with
969 some particular qualification. */
973 /* Get the type code of this type.
975 Note that the code can be TYPE_CODE_TYPEDEF, so if you want the real
976 type, you need to do `check_typedef (type)->code ()`. */
977 type_code
code () const
979 return this->main_type
->code
;
982 /* Set the type code of this type. */
983 void set_code (type_code code
)
985 this->main_type
->code
= code
;
988 /* Get the name of this type. */
989 const char *name () const
991 return this->main_type
->name
;
994 /* Set the name of this type. */
995 void set_name (const char *name
)
997 this->main_type
->name
= name
;
1000 /* Get the number of fields of this type. */
1001 int num_fields () const
1003 return this->main_type
->nfields
;
1006 /* Set the number of fields of this type. */
1007 void set_num_fields (int num_fields
)
1009 this->main_type
->nfields
= num_fields
;
1012 /* Get the fields array of this type. */
1013 struct field
*fields () const
1015 return this->main_type
->flds_bnds
.fields
;
1018 /* Get the field at index IDX. */
1019 struct field
&field (int idx
) const
1021 return this->fields ()[idx
];
1024 /* Set the fields array of this type. */
1025 void set_fields (struct field
*fields
)
1027 this->main_type
->flds_bnds
.fields
= fields
;
1030 type
*index_type () const
1032 return this->field (0).type ();
1035 void set_index_type (type
*index_type
)
1037 this->field (0).set_type (index_type
);
1040 /* Get the bounds bounds of this type. The type must be a range type. */
1041 range_bounds
*bounds () const
1043 switch (this->code ())
1045 case TYPE_CODE_RANGE
:
1046 return this->main_type
->flds_bnds
.bounds
;
1048 case TYPE_CODE_ARRAY
:
1049 case TYPE_CODE_STRING
:
1050 return this->index_type ()->bounds ();
1053 gdb_assert_not_reached
1054 ("type::bounds called on type with invalid code");
1058 /* Set the bounds of this type. The type must be a range type. */
1059 void set_bounds (range_bounds
*bounds
)
1061 gdb_assert (this->code () == TYPE_CODE_RANGE
);
1063 this->main_type
->flds_bnds
.bounds
= bounds
;
1066 ULONGEST
bit_stride () const
1068 return this->bounds ()->bit_stride ();
1071 bool is_unsigned () const
1073 return this->main_type
->m_flag_unsigned
;
1076 void set_is_unsigned (bool is_unsigned
)
1078 this->main_type
->m_flag_unsigned
= is_unsigned
;
1081 /* * Return the dynamic property of the requested KIND from this type's
1082 list of dynamic properties. */
1083 dynamic_prop
*dyn_prop (dynamic_prop_node_kind kind
) const;
1085 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1086 property to this type.
1088 This function assumes that this type is objfile-owned. */
1089 void add_dyn_prop (dynamic_prop_node_kind kind
, dynamic_prop prop
);
1091 /* * Remove dynamic property of kind KIND from this type, if it exists. */
1092 void remove_dyn_prop (dynamic_prop_node_kind kind
);
1094 /* * Type that is a pointer to this type.
1095 NULL if no such pointer-to type is known yet.
1096 The debugger may add the address of such a type
1097 if it has to construct one later. */
1099 struct type
*pointer_type
;
1101 /* * C++: also need a reference type. */
1103 struct type
*reference_type
;
1105 /* * A C++ rvalue reference type added in C++11. */
1107 struct type
*rvalue_reference_type
;
1109 /* * Variant chain. This points to a type that differs from this
1110 one only in qualifiers and length. Currently, the possible
1111 qualifiers are const, volatile, code-space, data-space, and
1112 address class. The length may differ only when one of the
1113 address class flags are set. The variants are linked in a
1114 circular ring and share MAIN_TYPE. */
1118 /* * The alignment for this type. Zero means that the alignment was
1119 not specified in the debug info. Note that this is stored in a
1120 funny way: as the log base 2 (plus 1) of the alignment; so a
1121 value of 1 means the alignment is 1, and a value of 9 means the
1122 alignment is 256. */
1124 unsigned align_log2
: TYPE_ALIGN_BITS
;
1126 /* * Flags specific to this instance of the type, indicating where
1129 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
1130 binary or-ed with the target type, with a special case for
1131 address class and space class. For example if this typedef does
1132 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
1133 instance flags are completely inherited from the target type. No
1134 qualifiers can be cleared by the typedef. See also
1136 unsigned instance_flags
: 9;
1138 /* * Length of storage for a value of this type. The value is the
1139 expression in host bytes of what sizeof(type) would return. This
1140 size includes padding. For example, an i386 extended-precision
1141 floating point value really only occupies ten bytes, but most
1142 ABI's declare its size to be 12 bytes, to preserve alignment.
1143 A `struct type' representing such a floating-point type would
1144 have a `length' value of 12, even though the last two bytes are
1147 Since this field is expressed in host bytes, its value is appropriate
1148 to pass to memcpy and such (it is assumed that GDB itself always runs
1149 on an 8-bits addressable architecture). However, when using it for
1150 target address arithmetic (e.g. adding it to a target address), the
1151 type_length_units function should be used in order to get the length
1152 expressed in target addressable memory units. */
1156 /* * Core type, shared by a group of qualified types. */
1158 struct main_type
*main_type
;
1164 /* * The overloaded name.
1165 This is generally allocated in the objfile's obstack.
1166 However stabsread.c sometimes uses malloc. */
1170 /* * The number of methods with this name. */
1174 /* * The list of methods. */
1176 struct fn_field
*fn_fields
;
1183 /* * If is_stub is clear, this is the mangled name which we can look
1184 up to find the address of the method (FIXME: it would be cleaner
1185 to have a pointer to the struct symbol here instead).
1187 If is_stub is set, this is the portion of the mangled name which
1188 specifies the arguments. For example, "ii", if there are two int
1189 arguments, or "" if there are no arguments. See gdb_mangle_name
1190 for the conversion from this format to the one used if is_stub is
1193 const char *physname
;
1195 /* * The function type for the method.
1197 (This comment used to say "The return value of the method", but
1198 that's wrong. The function type is expected here, i.e. something
1199 with TYPE_CODE_METHOD, and *not* the return-value type). */
1203 /* * For virtual functions. First baseclass that defines this
1204 virtual function. */
1206 struct type
*fcontext
;
1210 unsigned int is_const
:1;
1211 unsigned int is_volatile
:1;
1212 unsigned int is_private
:1;
1213 unsigned int is_protected
:1;
1214 unsigned int is_artificial
:1;
1216 /* * A stub method only has some fields valid (but they are enough
1217 to reconstruct the rest of the fields). */
1219 unsigned int is_stub
:1;
1221 /* * True if this function is a constructor, false otherwise. */
1223 unsigned int is_constructor
: 1;
1225 /* * True if this function is deleted, false otherwise. */
1227 unsigned int is_deleted
: 1;
1229 /* * DW_AT_defaulted attribute for this function. The value is one
1230 of the DW_DEFAULTED constants. */
1232 ENUM_BITFIELD (dwarf_defaulted_attribute
) defaulted
: 2;
1236 unsigned int dummy
:6;
1238 /* * Index into that baseclass's virtual function table, minus 2;
1239 else if static: VOFFSET_STATIC; else: 0. */
1241 unsigned int voffset
:16;
1243 #define VOFFSET_STATIC 1
1249 /* * Unqualified name to be prefixed by owning class qualified
1254 /* * Type this typedef named NAME represents. */
1258 /* * True if this field was declared protected, false otherwise. */
1259 unsigned int is_protected
: 1;
1261 /* * True if this field was declared private, false otherwise. */
1262 unsigned int is_private
: 1;
1265 /* * C++ language-specific information for TYPE_CODE_STRUCT and
1266 TYPE_CODE_UNION nodes. */
1268 struct cplus_struct_type
1270 /* * Number of base classes this type derives from. The
1271 baseclasses are stored in the first N_BASECLASSES fields
1272 (i.e. the `fields' field of the struct type). The only fields
1273 of struct field that are used are: type, name, loc.bitpos. */
1275 short n_baseclasses
;
1277 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
1278 All access to this field must be through TYPE_VPTR_FIELDNO as one
1279 thing it does is check whether the field has been initialized.
1280 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
1281 which for portability reasons doesn't initialize this field.
1282 TYPE_VPTR_FIELDNO returns -1 for this case.
1284 If -1, we were unable to find the virtual function table pointer in
1285 initial symbol reading, and get_vptr_fieldno should be called to find
1286 it if possible. get_vptr_fieldno will update this field if possible.
1287 Otherwise the value is left at -1.
1289 Unused if this type does not have virtual functions. */
1293 /* * Number of methods with unique names. All overloaded methods
1294 with the same name count only once. */
1298 /* * Number of template arguments. */
1300 unsigned short n_template_arguments
;
1302 /* * One if this struct is a dynamic class, as defined by the
1303 Itanium C++ ABI: if it requires a virtual table pointer,
1304 because it or any of its base classes have one or more virtual
1305 member functions or virtual base classes. Minus one if not
1306 dynamic. Zero if not yet computed. */
1310 /* * The calling convention for this type, fetched from the
1311 DW_AT_calling_convention attribute. The value is one of the
1314 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1316 /* * The base class which defined the virtual function table pointer. */
1318 struct type
*vptr_basetype
;
1320 /* * For derived classes, the number of base classes is given by
1321 n_baseclasses and virtual_field_bits is a bit vector containing
1322 one bit per base class. If the base class is virtual, the
1323 corresponding bit will be set.
1328 class C : public B, public virtual A {};
1330 B is a baseclass of C; A is a virtual baseclass for C.
1331 This is a C++ 2.0 language feature. */
1333 B_TYPE
*virtual_field_bits
;
1335 /* * For classes with private fields, the number of fields is
1336 given by nfields and private_field_bits is a bit vector
1337 containing one bit per field.
1339 If the field is private, the corresponding bit will be set. */
1341 B_TYPE
*private_field_bits
;
1343 /* * For classes with protected fields, the number of fields is
1344 given by nfields and protected_field_bits is a bit vector
1345 containing one bit per field.
1347 If the field is private, the corresponding bit will be set. */
1349 B_TYPE
*protected_field_bits
;
1351 /* * For classes with fields to be ignored, either this is
1352 optimized out or this field has length 0. */
1354 B_TYPE
*ignore_field_bits
;
1356 /* * For classes, structures, and unions, a description of each
1357 field, which consists of an overloaded name, followed by the
1358 types of arguments that the method expects, and then the name
1359 after it has been renamed to make it distinct.
1361 fn_fieldlists points to an array of nfn_fields of these. */
1363 struct fn_fieldlist
*fn_fieldlists
;
1365 /* * typedefs defined inside this class. typedef_field points to
1366 an array of typedef_field_count elements. */
1368 struct decl_field
*typedef_field
;
1370 unsigned typedef_field_count
;
1372 /* * The nested types defined by this type. nested_types points to
1373 an array of nested_types_count elements. */
1375 struct decl_field
*nested_types
;
1377 unsigned nested_types_count
;
1379 /* * The template arguments. This is an array with
1380 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1383 struct symbol
**template_arguments
;
1386 /* * Struct used to store conversion rankings. */
1392 /* * When two conversions are of the same type and therefore have
1393 the same rank, subrank is used to differentiate the two.
1395 Eg: Two derived-class-pointer to base-class-pointer conversions
1396 would both have base pointer conversion rank, but the
1397 conversion with the shorter distance to the ancestor is
1398 preferable. 'subrank' would be used to reflect that. */
1403 /* * Used for ranking a function for overload resolution. */
1405 typedef std::vector
<rank
> badness_vector
;
1407 /* * GNAT Ada-specific information for various Ada types. */
1409 struct gnat_aux_type
1411 /* * Parallel type used to encode information about dynamic types
1412 used in Ada (such as variant records, variable-size array,
1414 struct type
* descriptive_type
;
1417 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1421 /* * The calling convention for targets supporting multiple ABIs.
1422 Right now this is only fetched from the Dwarf-2
1423 DW_AT_calling_convention attribute. The value is one of the
1426 ENUM_BITFIELD (dwarf_calling_convention
) calling_convention
: 8;
1428 /* * Whether this function normally returns to its caller. It is
1429 set from the DW_AT_noreturn attribute if set on the
1430 DW_TAG_subprogram. */
1432 unsigned int is_noreturn
: 1;
1434 /* * Only those DW_TAG_call_site's in this function that have
1435 DW_AT_call_tail_call set are linked in this list. Function
1436 without its tail call list complete
1437 (DW_AT_call_all_tail_calls or its superset
1438 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1439 DW_TAG_call_site's exist in such function. */
1441 struct call_site
*tail_call_list
;
1443 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1444 contains the method. */
1446 struct type
*self_type
;
1449 /* struct call_site_parameter can be referenced in callees by several ways. */
1451 enum call_site_parameter_kind
1453 /* * Use field call_site_parameter.u.dwarf_reg. */
1454 CALL_SITE_PARAMETER_DWARF_REG
,
1456 /* * Use field call_site_parameter.u.fb_offset. */
1457 CALL_SITE_PARAMETER_FB_OFFSET
,
1459 /* * Use field call_site_parameter.u.param_offset. */
1460 CALL_SITE_PARAMETER_PARAM_OFFSET
1463 struct call_site_target
1465 union field_location loc
;
1467 /* * Discriminant for union field_location. */
1469 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1472 union call_site_parameter_u
1474 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1475 as DWARF register number, for register passed
1480 /* * Offset from the callee's frame base, for stack passed
1481 parameters. This equals offset from the caller's stack
1484 CORE_ADDR fb_offset
;
1486 /* * Offset relative to the start of this PER_CU to
1487 DW_TAG_formal_parameter which is referenced by both
1488 caller and the callee. */
1490 cu_offset param_cu_off
;
1493 struct call_site_parameter
1495 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1497 union call_site_parameter_u u
;
1499 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1501 const gdb_byte
*value
;
1504 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1505 It may be NULL if not provided by DWARF. */
1507 const gdb_byte
*data_value
;
1508 size_t data_value_size
;
1511 /* * A place where a function gets called from, represented by
1512 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1516 /* * Address of the first instruction after this call. It must be
1517 the first field as we overload core_addr_hash and core_addr_eq
1522 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1524 struct call_site
*tail_call_next
;
1526 /* * Describe DW_AT_call_target. Missing attribute uses
1527 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1529 struct call_site_target target
;
1531 /* * Size of the PARAMETER array. */
1533 unsigned parameter_count
;
1535 /* * CU of the function where the call is located. It gets used
1536 for DWARF blocks execution in the parameter array below. */
1538 dwarf2_per_cu_data
*per_cu
;
1540 /* objfile of the function where the call is located. */
1542 dwarf2_per_objfile
*per_objfile
;
1544 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1546 struct call_site_parameter parameter
[1];
1549 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1550 static structure. */
1552 extern const struct cplus_struct_type cplus_struct_default
;
1554 extern void allocate_cplus_struct_type (struct type
*);
1556 #define INIT_CPLUS_SPECIFIC(type) \
1557 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1558 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1559 &cplus_struct_default)
1561 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1563 #define HAVE_CPLUS_STRUCT(type) \
1564 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1565 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1567 #define INIT_NONE_SPECIFIC(type) \
1568 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1569 TYPE_MAIN_TYPE (type)->type_specific = {})
1571 extern const struct gnat_aux_type gnat_aux_default
;
1573 extern void allocate_gnat_aux_type (struct type
*);
1575 #define INIT_GNAT_SPECIFIC(type) \
1576 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1577 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1578 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1579 /* * A macro that returns non-zero if the type-specific data should be
1580 read as "gnat-stuff". */
1581 #define HAVE_GNAT_AUX_INFO(type) \
1582 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1584 /* * True if TYPE is known to be an Ada type of some kind. */
1585 #define ADA_TYPE_P(type) \
1586 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1587 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1588 && TYPE_FIXED_INSTANCE (type)))
1590 #define INIT_FUNC_SPECIFIC(type) \
1591 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1592 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1593 TYPE_ZALLOC (type, \
1594 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1596 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1597 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1598 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1599 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1600 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1601 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1602 #define TYPE_CHAIN(thistype) (thistype)->chain
1603 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1604 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1605 so you only have to call check_typedef once. Since allocate_value
1606 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1607 #define TYPE_LENGTH(thistype) (thistype)->length
1609 /* * Return the alignment of the type in target addressable memory
1610 units, or 0 if no alignment was specified. */
1611 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1613 /* * Return the alignment of the type in target addressable memory
1614 units, or 0 if no alignment was specified. */
1615 extern unsigned type_raw_align (struct type
*);
1617 /* * Return the alignment of the type in target addressable memory
1618 units. Return 0 if the alignment cannot be determined; but note
1619 that this makes an effort to compute the alignment even it it was
1620 not specified in the debug info. */
1621 extern unsigned type_align (struct type
*);
1623 /* * Set the alignment of the type. The alignment must be a power of
1624 2. Returns false if the given value does not fit in the available
1625 space in struct type. */
1626 extern bool set_type_align (struct type
*, ULONGEST
);
1628 /* Property accessors for the type data location. */
1629 #define TYPE_DATA_LOCATION(thistype) \
1630 ((thistype)->dyn_prop (DYN_PROP_DATA_LOCATION))
1631 #define TYPE_DATA_LOCATION_BATON(thistype) \
1632 TYPE_DATA_LOCATION (thistype)->data.baton
1633 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1634 (TYPE_DATA_LOCATION (thistype)->const_val ())
1635 #define TYPE_DATA_LOCATION_KIND(thistype) \
1636 (TYPE_DATA_LOCATION (thistype)->kind ())
1637 #define TYPE_DYNAMIC_LENGTH(thistype) \
1638 ((thistype)->dyn_prop (DYN_PROP_BYTE_SIZE))
1640 /* Property accessors for the type allocated/associated. */
1641 #define TYPE_ALLOCATED_PROP(thistype) \
1642 ((thistype)->dyn_prop (DYN_PROP_ALLOCATED))
1643 #define TYPE_ASSOCIATED_PROP(thistype) \
1644 ((thistype)->dyn_prop (DYN_PROP_ASSOCIATED))
1648 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1649 /* Do not call this, use TYPE_SELF_TYPE. */
1650 extern struct type
*internal_type_self_type (struct type
*);
1651 extern void set_type_self_type (struct type
*, struct type
*);
1653 extern int internal_type_vptr_fieldno (struct type
*);
1654 extern void set_type_vptr_fieldno (struct type
*, int);
1655 extern struct type
*internal_type_vptr_basetype (struct type
*);
1656 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1657 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1658 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1660 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1661 #define TYPE_SPECIFIC_FIELD(thistype) \
1662 TYPE_MAIN_TYPE(thistype)->type_specific_field
1663 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1664 where we're trying to print an Ada array using the C language.
1665 In that case, there is no "cplus_stuff", but the C language assumes
1666 that there is. What we do, in that case, is pretend that there is
1667 an implicit one which is the default cplus stuff. */
1668 #define TYPE_CPLUS_SPECIFIC(thistype) \
1669 (!HAVE_CPLUS_STRUCT(thistype) \
1670 ? (struct cplus_struct_type*)&cplus_struct_default \
1671 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1672 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1673 #define TYPE_CPLUS_CALLING_CONVENTION(thistype) \
1674 TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff->calling_convention
1675 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1676 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1677 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1678 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1679 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1680 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1681 #define TYPE_BASECLASS(thistype,index) ((thistype)->field (index).type ())
1682 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1683 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1684 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1685 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1686 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1687 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1689 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1690 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1691 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1693 #define FIELD_NAME(thisfld) ((thisfld).name)
1694 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1695 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1696 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1697 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1698 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1699 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1700 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1701 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1702 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1703 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1704 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1705 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1706 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1707 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1708 #define SET_FIELD_PHYSNAME(thisfld, name) \
1709 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1710 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1711 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1712 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1713 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1714 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1715 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1716 FIELD_DWARF_BLOCK (thisfld) = (addr))
1717 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1718 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1720 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME((thistype)->field (n))
1721 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND ((thistype)->field (n))
1722 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS ((thistype)->field (n))
1723 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL ((thistype)->field (n))
1724 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME ((thistype)->field (n))
1725 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR ((thistype)->field (n))
1726 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK ((thistype)->field (n))
1727 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL((thistype)->field (n))
1728 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE((thistype)->field (n))
1729 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE((thistype)->field (n))!=0)
1731 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1732 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1733 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1734 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1735 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1736 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1737 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1738 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1739 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1740 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1741 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1742 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1743 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1744 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1745 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1746 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1747 #define TYPE_FIELD_PRIVATE(thistype, n) \
1748 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1749 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1750 #define TYPE_FIELD_PROTECTED(thistype, n) \
1751 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1752 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1753 #define TYPE_FIELD_IGNORE(thistype, n) \
1754 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1755 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1756 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1757 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1758 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1760 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1761 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1762 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1763 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1764 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1766 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1767 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1768 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1769 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1770 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1771 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1773 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1774 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1775 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1776 #define TYPE_FN_FIELD_ARGS(thisfn, n) (((thisfn)[n].type)->fields ())
1777 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1778 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1779 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1780 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1781 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1782 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1783 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1784 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1785 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1786 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1787 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1788 #define TYPE_FN_FIELD_DEFAULTED(thisfn, n) ((thisfn)[n].defaulted)
1789 #define TYPE_FN_FIELD_DELETED(thisfn, n) ((thisfn)[n].is_deleted)
1791 /* Accessors for typedefs defined by a class. */
1792 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1793 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1794 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1795 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1796 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1797 TYPE_TYPEDEF_FIELD (thistype, n).name
1798 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1799 TYPE_TYPEDEF_FIELD (thistype, n).type
1800 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1801 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1802 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1803 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1804 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1805 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1807 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1808 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1809 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1810 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1811 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1812 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1813 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1814 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1815 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1816 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1817 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1818 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1819 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1820 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1822 #define TYPE_IS_OPAQUE(thistype) \
1823 ((((thistype)->code () == TYPE_CODE_STRUCT) \
1824 || ((thistype)->code () == TYPE_CODE_UNION)) \
1825 && ((thistype)->num_fields () == 0) \
1826 && (!HAVE_CPLUS_STRUCT (thistype) \
1827 || TYPE_NFN_FIELDS (thistype) == 0) \
1828 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1830 /* * A helper macro that returns the name of a type or "unnamed type"
1831 if the type has no name. */
1833 #define TYPE_SAFE_NAME(type) \
1834 (type->name () != nullptr ? type->name () : _("<unnamed type>"))
1836 /* * A helper macro that returns the name of an error type. If the
1837 type has a name, it is used; otherwise, a default is used. */
1839 #define TYPE_ERROR_NAME(type) \
1840 (type->name () ? type->name () : _("<error type>"))
1842 /* Given TYPE, return its floatformat. */
1843 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1847 /* Integral types. */
1849 /* Implicit size/sign (based on the architecture's ABI). */
1850 struct type
*builtin_void
;
1851 struct type
*builtin_char
;
1852 struct type
*builtin_short
;
1853 struct type
*builtin_int
;
1854 struct type
*builtin_long
;
1855 struct type
*builtin_signed_char
;
1856 struct type
*builtin_unsigned_char
;
1857 struct type
*builtin_unsigned_short
;
1858 struct type
*builtin_unsigned_int
;
1859 struct type
*builtin_unsigned_long
;
1860 struct type
*builtin_bfloat16
;
1861 struct type
*builtin_half
;
1862 struct type
*builtin_float
;
1863 struct type
*builtin_double
;
1864 struct type
*builtin_long_double
;
1865 struct type
*builtin_complex
;
1866 struct type
*builtin_double_complex
;
1867 struct type
*builtin_string
;
1868 struct type
*builtin_bool
;
1869 struct type
*builtin_long_long
;
1870 struct type
*builtin_unsigned_long_long
;
1871 struct type
*builtin_decfloat
;
1872 struct type
*builtin_decdouble
;
1873 struct type
*builtin_declong
;
1875 /* "True" character types.
1876 We use these for the '/c' print format, because c_char is just a
1877 one-byte integral type, which languages less laid back than C
1878 will print as ... well, a one-byte integral type. */
1879 struct type
*builtin_true_char
;
1880 struct type
*builtin_true_unsigned_char
;
1882 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1883 is for when an architecture needs to describe a register that has
1885 struct type
*builtin_int0
;
1886 struct type
*builtin_int8
;
1887 struct type
*builtin_uint8
;
1888 struct type
*builtin_int16
;
1889 struct type
*builtin_uint16
;
1890 struct type
*builtin_int24
;
1891 struct type
*builtin_uint24
;
1892 struct type
*builtin_int32
;
1893 struct type
*builtin_uint32
;
1894 struct type
*builtin_int64
;
1895 struct type
*builtin_uint64
;
1896 struct type
*builtin_int128
;
1897 struct type
*builtin_uint128
;
1899 /* Wide character types. */
1900 struct type
*builtin_char16
;
1901 struct type
*builtin_char32
;
1902 struct type
*builtin_wchar
;
1904 /* Pointer types. */
1906 /* * `pointer to data' type. Some target platforms use an implicitly
1907 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1908 struct type
*builtin_data_ptr
;
1910 /* * `pointer to function (returning void)' type. Harvard
1911 architectures mean that ABI function and code pointers are not
1912 interconvertible. Similarly, since ANSI, C standards have
1913 explicitly said that pointers to functions and pointers to data
1914 are not interconvertible --- that is, you can't cast a function
1915 pointer to void * and back, and expect to get the same value.
1916 However, all function pointer types are interconvertible, so void
1917 (*) () can server as a generic function pointer. */
1919 struct type
*builtin_func_ptr
;
1921 /* * `function returning pointer to function (returning void)' type.
1922 The final void return type is not significant for it. */
1924 struct type
*builtin_func_func
;
1926 /* Special-purpose types. */
1928 /* * This type is used to represent a GDB internal function. */
1930 struct type
*internal_fn
;
1932 /* * This type is used to represent an xmethod. */
1933 struct type
*xmethod
;
1936 /* * Return the type table for the specified architecture. */
1938 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1940 /* * Per-objfile types used by symbol readers. */
1944 /* Basic types based on the objfile architecture. */
1945 struct type
*builtin_void
;
1946 struct type
*builtin_char
;
1947 struct type
*builtin_short
;
1948 struct type
*builtin_int
;
1949 struct type
*builtin_long
;
1950 struct type
*builtin_long_long
;
1951 struct type
*builtin_signed_char
;
1952 struct type
*builtin_unsigned_char
;
1953 struct type
*builtin_unsigned_short
;
1954 struct type
*builtin_unsigned_int
;
1955 struct type
*builtin_unsigned_long
;
1956 struct type
*builtin_unsigned_long_long
;
1957 struct type
*builtin_half
;
1958 struct type
*builtin_float
;
1959 struct type
*builtin_double
;
1960 struct type
*builtin_long_double
;
1962 /* * This type is used to represent symbol addresses. */
1963 struct type
*builtin_core_addr
;
1965 /* * This type represents a type that was unrecognized in symbol
1967 struct type
*builtin_error
;
1969 /* * Types used for symbols with no debug information. */
1970 struct type
*nodebug_text_symbol
;
1971 struct type
*nodebug_text_gnu_ifunc_symbol
;
1972 struct type
*nodebug_got_plt_symbol
;
1973 struct type
*nodebug_data_symbol
;
1974 struct type
*nodebug_unknown_symbol
;
1975 struct type
*nodebug_tls_symbol
;
1978 /* * Return the type table for the specified objfile. */
1980 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1982 /* Explicit floating-point formats. See "floatformat.h". */
1983 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1984 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1985 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1986 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1987 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1988 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1989 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1990 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1991 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1992 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1993 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1994 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1995 extern const struct floatformat
*floatformats_bfloat16
[BFD_ENDIAN_UNKNOWN
];
1997 /* Allocate space for storing data associated with a particular
1998 type. We ensure that the space is allocated using the same
1999 mechanism that was used to allocate the space for the type
2000 structure itself. I.e. if the type is on an objfile's
2001 objfile_obstack, then the space for data associated with that type
2002 will also be allocated on the objfile_obstack. If the type is
2003 associated with a gdbarch, then the space for data associated with that
2004 type will also be allocated on the gdbarch_obstack.
2006 If a type is not associated with neither an objfile or a gdbarch then
2007 you should not use this macro to allocate space for data, instead you
2008 should call xmalloc directly, and ensure the memory is correctly freed
2009 when it is no longer needed. */
2011 #define TYPE_ALLOC(t,size) \
2012 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
2013 ? &TYPE_OBJFILE (t)->objfile_obstack \
2014 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
2018 /* See comment on TYPE_ALLOC. */
2020 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
2022 /* Use alloc_type to allocate a type owned by an objfile. Use
2023 alloc_type_arch to allocate a type owned by an architecture. Use
2024 alloc_type_copy to allocate a type with the same owner as a
2025 pre-existing template type, no matter whether objfile or
2027 extern struct type
*alloc_type (struct objfile
*);
2028 extern struct type
*alloc_type_arch (struct gdbarch
*);
2029 extern struct type
*alloc_type_copy (const struct type
*);
2031 /* * Return the type's architecture. For types owned by an
2032 architecture, that architecture is returned. For types owned by an
2033 objfile, that objfile's architecture is returned. */
2035 extern struct gdbarch
*get_type_arch (const struct type
*);
2037 /* * This returns the target type (or NULL) of TYPE, also skipping
2040 extern struct type
*get_target_type (struct type
*type
);
2042 /* Return the equivalent of TYPE_LENGTH, but in number of target
2043 addressable memory units of the associated gdbarch instead of bytes. */
2045 extern unsigned int type_length_units (struct type
*type
);
2047 /* * Helper function to construct objfile-owned types. */
2049 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
2051 extern struct type
*init_integer_type (struct objfile
*, int, int,
2053 extern struct type
*init_character_type (struct objfile
*, int, int,
2055 extern struct type
*init_boolean_type (struct objfile
*, int, int,
2057 extern struct type
*init_float_type (struct objfile
*, int, const char *,
2058 const struct floatformat
**,
2059 enum bfd_endian
= BFD_ENDIAN_UNKNOWN
);
2060 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
2061 extern struct type
*init_complex_type (const char *, struct type
*);
2062 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
2065 /* Helper functions to construct architecture-owned types. */
2066 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
2068 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
2070 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
2072 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
2074 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
2075 const struct floatformat
**);
2076 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
2077 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
2080 /* Helper functions to construct a struct or record type. An
2081 initially empty type is created using arch_composite_type().
2082 Fields are then added using append_composite_type_field*(). A union
2083 type has its size set to the largest field. A struct type has each
2084 field packed against the previous. */
2086 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
2087 const char *name
, enum type_code code
);
2088 extern void append_composite_type_field (struct type
*t
, const char *name
,
2089 struct type
*field
);
2090 extern void append_composite_type_field_aligned (struct type
*t
,
2094 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
2095 struct type
*field
);
2097 /* Helper functions to construct a bit flags type. An initially empty
2098 type is created using arch_flag_type(). Flags are then added using
2099 append_flag_type_field() and append_flag_type_flag(). */
2100 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
2101 const char *name
, int bit
);
2102 extern void append_flags_type_field (struct type
*type
,
2103 int start_bitpos
, int nr_bits
,
2104 struct type
*field_type
, const char *name
);
2105 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
2108 extern void make_vector_type (struct type
*array_type
);
2109 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
2111 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
2112 extern struct type
*lookup_lvalue_reference_type (struct type
*);
2113 extern struct type
*lookup_rvalue_reference_type (struct type
*);
2116 extern struct type
*make_reference_type (struct type
*, struct type
**,
2119 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
2121 extern struct type
*make_restrict_type (struct type
*);
2123 extern struct type
*make_unqualified_type (struct type
*);
2125 extern struct type
*make_atomic_type (struct type
*);
2127 extern void replace_type (struct type
*, struct type
*);
2129 extern int address_space_name_to_int (struct gdbarch
*, const char *);
2131 extern const char *address_space_int_to_name (struct gdbarch
*, int);
2133 extern struct type
*make_type_with_address_space (struct type
*type
,
2134 int space_identifier
);
2136 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
2138 extern struct type
*lookup_methodptr_type (struct type
*);
2140 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
2141 struct type
*to_type
, struct field
*args
,
2142 int nargs
, int varargs
);
2144 extern void smash_to_memberptr_type (struct type
*, struct type
*,
2147 extern void smash_to_methodptr_type (struct type
*, struct type
*);
2149 extern struct type
*allocate_stub_method (struct type
*);
2151 extern const char *type_name_or_error (struct type
*type
);
2155 /* The field of the element, or NULL if no element was found. */
2156 struct field
*field
;
2158 /* The bit offset of the element in the parent structure. */
2162 /* Given a type TYPE, lookup the field and offset of the component named
2165 TYPE can be either a struct or union, or a pointer or reference to
2166 a struct or union. If it is a pointer or reference, its target
2167 type is automatically used. Thus '.' and '->' are interchangable,
2168 as specified for the definitions of the expression element types
2169 STRUCTOP_STRUCT and STRUCTOP_PTR.
2171 If NOERR is nonzero, the returned structure will have field set to
2172 NULL if there is no component named NAME.
2174 If the component NAME is a field in an anonymous substructure of
2175 TYPE, the returned offset is a "global" offset relative to TYPE
2176 rather than an offset within the substructure. */
2178 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
2180 /* Given a type TYPE, lookup the type of the component named NAME.
2182 TYPE can be either a struct or union, or a pointer or reference to
2183 a struct or union. If it is a pointer or reference, its target
2184 type is automatically used. Thus '.' and '->' are interchangable,
2185 as specified for the definitions of the expression element types
2186 STRUCTOP_STRUCT and STRUCTOP_PTR.
2188 If NOERR is nonzero, return NULL if there is no component named
2191 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
2193 extern struct type
*make_pointer_type (struct type
*, struct type
**);
2195 extern struct type
*lookup_pointer_type (struct type
*);
2197 extern struct type
*make_function_type (struct type
*, struct type
**);
2199 extern struct type
*lookup_function_type (struct type
*);
2201 extern struct type
*lookup_function_type_with_arguments (struct type
*,
2205 extern struct type
*create_static_range_type (struct type
*, struct type
*,
2209 extern struct type
*create_array_type_with_stride
2210 (struct type
*, struct type
*, struct type
*,
2211 struct dynamic_prop
*, unsigned int);
2213 extern struct type
*create_range_type (struct type
*, struct type
*,
2214 const struct dynamic_prop
*,
2215 const struct dynamic_prop
*,
2218 /* Like CREATE_RANGE_TYPE but also sets up a stride. When BYTE_STRIDE_P
2219 is true the value in STRIDE is a byte stride, otherwise STRIDE is a bit
2222 extern struct type
* create_range_type_with_stride
2223 (struct type
*result_type
, struct type
*index_type
,
2224 const struct dynamic_prop
*low_bound
,
2225 const struct dynamic_prop
*high_bound
, LONGEST bias
,
2226 const struct dynamic_prop
*stride
, bool byte_stride_p
);
2228 extern struct type
*create_array_type (struct type
*, struct type
*,
2231 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
2233 extern struct type
*create_string_type (struct type
*, struct type
*,
2235 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
2237 extern struct type
*create_set_type (struct type
*, struct type
*);
2239 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
2242 extern struct type
*lookup_signed_typename (const struct language_defn
*,
2245 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
2247 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
2249 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
2250 ADDR specifies the location of the variable the type is bound to.
2251 If TYPE has no dynamic properties return TYPE; otherwise a new type with
2252 static properties is returned. */
2253 extern struct type
*resolve_dynamic_type
2254 (struct type
*type
, gdb::array_view
<const gdb_byte
> valaddr
,
2257 /* * Predicate if the type has dynamic values, which are not resolved yet. */
2258 extern int is_dynamic_type (struct type
*type
);
2260 extern struct type
*check_typedef (struct type
*);
2262 extern void check_stub_method_group (struct type
*, int);
2264 extern char *gdb_mangle_name (struct type
*, int, int);
2266 extern struct type
*lookup_typename (const struct language_defn
*,
2267 const char *, const struct block
*, int);
2269 extern struct type
*lookup_template_type (const char *, struct type
*,
2270 const struct block
*);
2272 extern int get_vptr_fieldno (struct type
*, struct type
**);
2274 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2276 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2277 LONGEST
*high_bound
);
2279 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2281 extern int class_types_same_p (const struct type
*, const struct type
*);
2283 extern int is_ancestor (struct type
*, struct type
*);
2285 extern int is_public_ancestor (struct type
*, struct type
*);
2287 extern int is_unique_ancestor (struct type
*, struct value
*);
2289 /* Overload resolution */
2291 /* * Badness if parameter list length doesn't match arg list length. */
2292 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2294 /* * Dummy badness value for nonexistent parameter positions. */
2295 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2296 /* * Badness if no conversion among types. */
2297 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2299 /* * Badness of an exact match. */
2300 extern const struct rank EXACT_MATCH_BADNESS
;
2302 /* * Badness of integral promotion. */
2303 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2304 /* * Badness of floating promotion. */
2305 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2306 /* * Badness of converting a derived class pointer
2307 to a base class pointer. */
2308 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2309 /* * Badness of integral conversion. */
2310 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2311 /* * Badness of floating conversion. */
2312 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2313 /* * Badness of integer<->floating conversions. */
2314 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2315 /* * Badness of conversion of pointer to void pointer. */
2316 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2317 /* * Badness of conversion to boolean. */
2318 extern const struct rank BOOL_CONVERSION_BADNESS
;
2319 /* * Badness of converting derived to base class. */
2320 extern const struct rank BASE_CONVERSION_BADNESS
;
2321 /* * Badness of converting from non-reference to reference. Subrank
2322 is the type of reference conversion being done. */
2323 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2324 extern const struct rank REFERENCE_SEE_THROUGH_BADNESS
;
2325 /* * Conversion to rvalue reference. */
2326 #define REFERENCE_CONVERSION_RVALUE 1
2327 /* * Conversion to const lvalue reference. */
2328 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2330 /* * Badness of converting integer 0 to NULL pointer. */
2331 extern const struct rank NULL_POINTER_CONVERSION
;
2332 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2334 extern const struct rank CV_CONVERSION_BADNESS
;
2335 #define CV_CONVERSION_CONST 1
2336 #define CV_CONVERSION_VOLATILE 2
2338 /* Non-standard conversions allowed by the debugger */
2340 /* * Converting a pointer to an int is usually OK. */
2341 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2343 /* * Badness of converting a (non-zero) integer constant
2345 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2347 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2348 extern int compare_ranks (struct rank a
, struct rank b
);
2350 extern int compare_badness (const badness_vector
&,
2351 const badness_vector
&);
2353 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2354 gdb::array_view
<value
*> args
);
2356 extern struct rank
rank_one_type (struct type
*, struct type
*,
2359 extern void recursive_dump_type (struct type
*, int);
2361 extern int field_is_static (struct field
*);
2365 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2366 const struct value_print_options
*,
2367 int, struct ui_file
*);
2369 extern int can_dereference (struct type
*);
2371 extern int is_integral_type (struct type
*);
2373 extern int is_floating_type (struct type
*);
2375 extern int is_scalar_type (struct type
*type
);
2377 extern int is_scalar_type_recursive (struct type
*);
2379 extern int class_or_union_p (const struct type
*);
2381 extern void maintenance_print_type (const char *, int);
2383 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2385 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2387 htab_t copied_types
);
2389 extern struct type
*copy_type (const struct type
*type
);
2391 extern bool types_equal (struct type
*, struct type
*);
2393 extern bool types_deeply_equal (struct type
*, struct type
*);
2395 extern int type_not_allocated (const struct type
*type
);
2397 extern int type_not_associated (const struct type
*type
);
2399 /* * When the type includes explicit byte ordering, return that.
2400 Otherwise, the byte ordering from gdbarch_byte_order for
2401 get_type_arch is returned. */
2403 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2405 /* A flag to enable printing of debugging information of C++
2408 extern unsigned int overload_debug
;
2410 #endif /* GDBTYPES_H */