2 /* Internal type definitions for GDB.
4 Copyright (C) 1992-2019 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 /* Forward declarations for prototypes. */
57 struct value_print_options;
60 /* These declarations are DWARF-specific as some of the gdbtypes.h data types
61 are already DWARF-specific. */
63 /* * Offset relative to the start of its containing CU (compilation
65 DEFINE_OFFSET_TYPE (cu_offset, unsigned int);
67 /* * Offset relative to the start of its .debug_info or .debug_types
69 DEFINE_OFFSET_TYPE (sect_offset, uint64_t);
72 sect_offset_str (sect_offset offset)
74 return hex_string (to_underlying (offset));
77 /* Some macros for char-based bitfields. */
79 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
80 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
81 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
82 #define B_TYPE unsigned char
83 #define B_BYTES(x) ( 1 + ((x)>>3) )
84 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
86 /* * Different kinds of data types are distinguished by the `code'
91 TYPE_CODE_BITSTRING = -1, /**< Deprecated */
92 TYPE_CODE_UNDEF = 0, /**< Not used; catches errors */
93 TYPE_CODE_PTR, /**< Pointer type */
95 /* * Array type with lower & upper bounds.
97 Regardless of the language, GDB represents multidimensional
98 array types the way C does: as arrays of arrays. So an
99 instance of a GDB array type T can always be seen as a series
100 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
103 Row-major languages like C lay out multi-dimensional arrays so
104 that incrementing the rightmost index in a subscripting
105 expression results in the smallest change in the address of the
106 element referred to. Column-major languages like Fortran lay
107 them out so that incrementing the leftmost index results in the
110 This means that, in column-major languages, working our way
111 from type to target type corresponds to working through indices
112 from right to left, not left to right. */
115 TYPE_CODE_STRUCT, /**< C struct or Pascal record */
116 TYPE_CODE_UNION, /**< C union or Pascal variant part */
117 TYPE_CODE_ENUM, /**< Enumeration type */
118 TYPE_CODE_FLAGS, /**< Bit flags type */
119 TYPE_CODE_FUNC, /**< Function type */
120 TYPE_CODE_INT, /**< Integer type */
122 /* * Floating type. This is *NOT* a complex type. Beware, there
123 are parts of GDB which bogusly assume that TYPE_CODE_FLT can
127 /* * Void type. The length field specifies the length (probably
128 always one) which is used in pointer arithmetic involving
129 pointers to this type, but actually dereferencing such a
130 pointer is invalid; a void type has no length and no actual
131 representation in memory or registers. A pointer to a void
132 type is a generic pointer. */
135 TYPE_CODE_SET, /**< Pascal sets */
136 TYPE_CODE_RANGE, /**< Range (integers within spec'd bounds). */
138 /* * A string type which is like an array of character but prints
139 differently. It does not contain a length field as Pascal
140 strings (for many Pascals, anyway) do; if we want to deal with
141 such strings, we should use a new type code. */
144 /* * Unknown type. The length field is valid if we were able to
145 deduce that much about the type, or 0 if we don't even know
150 TYPE_CODE_METHOD, /**< Method type */
152 /* * Pointer-to-member-function type. This describes how to access a
153 particular member function of a class (possibly a virtual
154 member function). The representation may vary between different
158 /* * Pointer-to-member type. This is the offset within a class to
159 some particular data member. The only currently supported
160 representation uses an unbiased offset, with -1 representing
161 NULL; this is used by the Itanium C++ ABI (used by GCC on all
165 TYPE_CODE_REF, /**< C++ Reference types */
167 TYPE_CODE_RVALUE_REF, /**< C++ rvalue reference types */
169 TYPE_CODE_CHAR, /**< *real* character type */
171 /* * Boolean type. 0 is false, 1 is true, and other values are
172 non-boolean (e.g. FORTRAN "logical" used as unsigned int). */
176 TYPE_CODE_COMPLEX, /**< Complex float */
180 TYPE_CODE_NAMESPACE, /**< C++ namespace. */
182 TYPE_CODE_DECFLOAT, /**< Decimal floating point. */
184 TYPE_CODE_MODULE, /**< Fortran module. */
186 /* * Internal function type. */
187 TYPE_CODE_INTERNAL_FUNCTION,
189 /* * Methods implemented in extension languages. */
193 /* * Some bits for the type's instance_flags word. See the macros
194 below for documentation on each bit. */
196 enum type_instance_flag_value : unsigned
198 TYPE_INSTANCE_FLAG_CONST = (1 << 0),
199 TYPE_INSTANCE_FLAG_VOLATILE = (1 << 1),
200 TYPE_INSTANCE_FLAG_CODE_SPACE = (1 << 2),
201 TYPE_INSTANCE_FLAG_DATA_SPACE = (1 << 3),
202 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 = (1 << 4),
203 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2 = (1 << 5),
204 TYPE_INSTANCE_FLAG_NOTTEXT = (1 << 6),
205 TYPE_INSTANCE_FLAG_RESTRICT = (1 << 7),
206 TYPE_INSTANCE_FLAG_ATOMIC = (1 << 8)
209 DEF_ENUM_FLAGS_TYPE (enum type_instance_flag_value, type_instance_flags);
211 /* * Unsigned integer type. If this is not set for a TYPE_CODE_INT,
212 the type is signed (unless TYPE_NOSIGN (below) is set). */
214 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
216 /* * No sign for this type. In C++, "char", "signed char", and
217 "unsigned char" are distinct types; so we need an extra flag to
218 indicate the absence of a sign! */
220 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
222 /* * This appears in a type's flags word if it is a stub type (e.g.,
223 if someone referenced a type that wasn't defined in a source file
224 via (struct sir_not_appearing_in_this_film *)). */
226 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
228 /* * The target type of this type is a stub type, and this type needs
229 to be updated if it gets un-stubbed in check_typedef. Used for
230 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
231 based on the TYPE_LENGTH of the target type. Also, set for
232 TYPE_CODE_TYPEDEF. */
234 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
236 /* * This is a function type which appears to have a prototype. We
237 need this for function calls in order to tell us if it's necessary
238 to coerce the args, or to just do the standard conversions. This
239 is used with a short field. */
241 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
243 /* * This flag is used to indicate that processing for this type
246 (Mostly intended for HP platforms, where class methods, for
247 instance, can be encountered before their classes in the debug
248 info; the incomplete type has to be marked so that the class and
249 the method can be assigned correct types.) */
251 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
253 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
256 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
258 /* * Identify a vector type. Gcc is handling this by adding an extra
259 attribute to the array type. We slurp that in as a new flag of a
260 type. This is used only in dwarf2read.c. */
261 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
263 /* * The debugging formats (especially STABS) do not contain enough
264 information to represent all Ada types---especially those whose
265 size depends on dynamic quantities. Therefore, the GNAT Ada
266 compiler includes extra information in the form of additional type
267 definitions connected by naming conventions. This flag indicates
268 that the type is an ordinary (unencoded) GDB type that has been
269 created from the necessary run-time information, and does not need
270 further interpretation. Optionally marks ordinary, fixed-size GDB
273 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
275 /* * This debug target supports TYPE_STUB(t). In the unsupported case
276 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
277 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
278 guessed the TYPE_STUB(t) value (see dwarfread.c). */
280 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
282 /* * Not textual. By default, GDB treats all single byte integers as
283 characters (or elements of strings) unless this flag is set. */
285 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
287 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
288 address is returned by this function call. TYPE_TARGET_TYPE
289 determines the final returned function type to be presented to
292 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
294 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
295 the objfile retrieved as TYPE_OBJFILE. Otherweise, the type is
296 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
298 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
299 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
300 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
302 /* * True if this type was declared using the "class" keyword. This is
303 only valid for C++ structure and enum types. If false, a structure
304 was declared as a "struct"; if true it was declared "class". For
305 enum types, this is true when "enum class" or "enum struct" was
306 used to declare the type.. */
308 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
310 /* * True if this type is a "flag" enum. A flag enum is one where all
311 the values are pairwise disjoint when "and"ed together. This
312 affects how enum values are printed. */
314 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
316 /* * True if this type is a discriminated union type. Only valid for
317 TYPE_CODE_UNION. A discriminated union stores a reference to the
318 discriminant field along with the discriminator values in a dynamic
321 #define TYPE_FLAG_DISCRIMINATED_UNION(t) \
322 (TYPE_MAIN_TYPE (t)->flag_discriminated_union)
324 /* * Constant type. If this is set, the corresponding type has a
327 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
329 /* * Volatile type. If this is set, the corresponding type has a
330 volatile modifier. */
332 #define TYPE_VOLATILE(t) \
333 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
335 /* * Restrict type. If this is set, the corresponding type has a
336 restrict modifier. */
338 #define TYPE_RESTRICT(t) \
339 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
341 /* * Atomic type. If this is set, the corresponding type has an
344 #define TYPE_ATOMIC(t) \
345 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
347 /* * True if this type represents either an lvalue or lvalue reference type. */
349 #define TYPE_IS_REFERENCE(t) \
350 (TYPE_CODE (t) == TYPE_CODE_REF || TYPE_CODE (t) == TYPE_CODE_RVALUE_REF)
352 /* * True if this type is allocatable. */
353 #define TYPE_IS_ALLOCATABLE(t) \
354 (get_dyn_prop (DYN_PROP_ALLOCATED, t) != NULL)
356 /* * Instruction-space delimited type. This is for Harvard architectures
357 which have separate instruction and data address spaces (and perhaps
360 GDB usually defines a flat address space that is a superset of the
361 architecture's two (or more) address spaces, but this is an extension
362 of the architecture's model.
364 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
365 resides in instruction memory, even if its address (in the extended
366 flat address space) does not reflect this.
368 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
369 corresponding type resides in the data memory space, even if
370 this is not indicated by its (flat address space) address.
372 If neither flag is set, the default space for functions / methods
373 is instruction space, and for data objects is data memory. */
375 #define TYPE_CODE_SPACE(t) \
376 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
378 #define TYPE_DATA_SPACE(t) \
379 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
381 /* * Address class flags. Some environments provide for pointers
382 whose size is different from that of a normal pointer or address
383 types where the bits are interpreted differently than normal
384 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
385 target specific ways to represent these different types of address
388 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
389 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
390 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
391 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
392 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
393 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
394 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
395 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
397 /* * Information needed for a discriminated union. A discriminated
398 union is handled somewhat differently from an ordinary union.
400 One field is designated as the discriminant. Only one other field
401 is active at a time; which one depends on the value of the
402 discriminant and the data in this structure.
404 Additionally, it is possible to have a univariant discriminated
405 union. In this case, the union has just a single field, which is
406 assumed to be the only active variant -- in this case no
407 discriminant is provided. */
409 struct discriminant_info
411 /* * The index of the discriminant field. If -1, then this union
412 must have just a single field. */
414 int discriminant_index;
416 /* * The index of the default branch of the union. If -1, then
417 there is no default branch. */
421 /* * The discriminant values corresponding to each branch. This has
422 a number of entries equal to the number of fields in this union.
423 If discriminant_index is not -1, then that entry in this array is
424 not used. If default_index is not -1, then that entry in this
425 array is not used. */
427 ULONGEST discriminants[1];
430 enum dynamic_prop_kind
432 PROP_UNDEFINED, /* Not defined. */
433 PROP_CONST, /* Constant. */
434 PROP_ADDR_OFFSET, /* Address offset. */
435 PROP_LOCEXPR, /* Location expression. */
436 PROP_LOCLIST /* Location list. */
439 union dynamic_prop_data
441 /* Storage for constant property. */
445 /* Storage for dynamic property. */
450 /* * Used to store a dynamic property. */
454 /* Determine which field of the union dynamic_prop.data is used. */
455 enum dynamic_prop_kind kind;
457 /* Storage for dynamic or static value. */
458 union dynamic_prop_data data;
461 /* Compare two dynamic_prop objects for equality. dynamic_prop
462 instances are equal iff they have the same type and storage. */
463 extern bool operator== (const dynamic_prop &l, const dynamic_prop &r);
465 /* Compare two dynamic_prop objects for inequality. */
466 static inline bool operator!= (const dynamic_prop &l, const dynamic_prop &r)
471 /* * Define a type's dynamic property node kind. */
472 enum dynamic_prop_node_kind
474 /* A property providing a type's data location.
475 Evaluating this field yields to the location of an object's data. */
476 DYN_PROP_DATA_LOCATION,
478 /* A property representing DW_AT_allocated. The presence of this attribute
479 indicates that the object of the type can be allocated/deallocated. */
482 /* A property representing DW_AT_allocated. The presence of this attribute
483 indicated that the object of the type can be associated. */
486 /* A property providing an array's byte stride. */
487 DYN_PROP_BYTE_STRIDE,
489 /* A property holding information about a discriminated union. */
490 DYN_PROP_DISCRIMINATED,
493 /* * List for dynamic type attributes. */
494 struct dynamic_prop_list
496 /* The kind of dynamic prop in this node. */
497 enum dynamic_prop_node_kind prop_kind;
499 /* The dynamic property itself. */
500 struct dynamic_prop prop;
502 /* A pointer to the next dynamic property. */
503 struct dynamic_prop_list *next;
506 /* * Determine which field of the union main_type.fields[x].loc is
511 FIELD_LOC_KIND_BITPOS, /**< bitpos */
512 FIELD_LOC_KIND_ENUMVAL, /**< enumval */
513 FIELD_LOC_KIND_PHYSADDR, /**< physaddr */
514 FIELD_LOC_KIND_PHYSNAME, /**< physname */
515 FIELD_LOC_KIND_DWARF_BLOCK /**< dwarf_block */
518 /* * A discriminant to determine which field in the
519 main_type.type_specific union is being used, if any.
521 For types such as TYPE_CODE_FLT, the use of this
522 discriminant is really redundant, as we know from the type code
523 which field is going to be used. As such, it would be possible to
524 reduce the size of this enum in order to save a bit or two for
525 other fields of struct main_type. But, since we still have extra
526 room , and for the sake of clarity and consistency, we treat all fields
527 of the union the same way. */
529 enum type_specific_kind
532 TYPE_SPECIFIC_CPLUS_STUFF,
533 TYPE_SPECIFIC_GNAT_STUFF,
534 TYPE_SPECIFIC_FLOATFORMAT,
535 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
537 TYPE_SPECIFIC_SELF_TYPE
542 struct objfile *objfile;
543 struct gdbarch *gdbarch;
548 /* * Position of this field, counting in bits from start of
549 containing structure. For gdbarch_bits_big_endian=1
550 targets, it is the bit offset to the MSB. For
551 gdbarch_bits_big_endian=0 targets, it is the bit offset to
559 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
560 physaddr is the location (in the target) of the static
561 field. Otherwise, physname is the mangled label of the
565 const char *physname;
567 /* * The field location can be computed by evaluating the
568 following DWARF block. Its DATA is allocated on
569 objfile_obstack - no CU load is needed to access it. */
571 struct dwarf2_locexpr_baton *dwarf_block;
576 union field_location loc;
578 /* * For a function or member type, this is 1 if the argument is
579 marked artificial. Artificial arguments should not be shown
580 to the user. For TYPE_CODE_RANGE it is set if the specific
581 bound is not defined. */
583 unsigned int artificial : 1;
585 /* * Discriminant for union field_location. */
587 ENUM_BITFIELD(field_loc_kind) loc_kind : 3;
589 /* * Size of this field, in bits, or zero if not packed.
590 If non-zero in an array type, indicates the element size in
591 bits (used only in Ada at the moment).
592 For an unpacked field, the field's type's length
593 says how many bytes the field occupies. */
595 unsigned int bitsize : 28;
597 /* * In a struct or union type, type of this field.
598 - In a function or member type, type of this argument.
599 - In an array type, the domain-type of the array. */
603 /* * Name of field, value or argument.
604 NULL for range bounds, array domains, and member function
612 /* * Low bound of range. */
614 struct dynamic_prop low;
616 /* * High bound of range. */
618 struct dynamic_prop high;
620 /* True if HIGH range bound contains the number of elements in the
621 subrange. This affects how the final high bound is computed. */
623 int flag_upper_bound_is_count : 1;
625 /* True if LOW or/and HIGH are resolved into a static bound from
628 int flag_bound_evaluated : 1;
631 /* Compare two range_bounds objects for equality. Simply does
632 memberwise comparison. */
633 extern bool operator== (const range_bounds &l, const range_bounds &r);
635 /* Compare two range_bounds objects for inequality. */
636 static inline bool operator!= (const range_bounds &l, const range_bounds &r)
643 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
644 point to cplus_struct_default, a default static instance of a
645 struct cplus_struct_type. */
647 struct cplus_struct_type *cplus_stuff;
649 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
650 provides additional information. */
652 struct gnat_aux_type *gnat_stuff;
654 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
655 floatformat object that describes the floating-point value
656 that resides within the type. */
658 const struct floatformat *floatformat;
660 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
662 struct func_type *func_stuff;
664 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
665 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
668 struct type *self_type;
671 /* * Main structure representing a type in GDB.
673 This structure is space-critical. Its layout has been tweaked to
674 reduce the space used. */
678 /* * Code for kind of type. */
680 ENUM_BITFIELD(type_code) code : 8;
682 /* * Flags about this type. These fields appear at this location
683 because they packs nicely here. See the TYPE_* macros for
684 documentation about these fields. */
686 unsigned int flag_unsigned : 1;
687 unsigned int flag_nosign : 1;
688 unsigned int flag_stub : 1;
689 unsigned int flag_target_stub : 1;
690 unsigned int flag_static : 1;
691 unsigned int flag_prototyped : 1;
692 unsigned int flag_incomplete : 1;
693 unsigned int flag_varargs : 1;
694 unsigned int flag_vector : 1;
695 unsigned int flag_stub_supported : 1;
696 unsigned int flag_gnu_ifunc : 1;
697 unsigned int flag_fixed_instance : 1;
698 unsigned int flag_objfile_owned : 1;
700 /* * True if this type was declared with "class" rather than
703 unsigned int flag_declared_class : 1;
705 /* * True if this is an enum type with disjoint values. This
706 affects how the enum is printed. */
708 unsigned int flag_flag_enum : 1;
710 /* * True if this type is a discriminated union type. Only valid
711 for TYPE_CODE_UNION. A discriminated union stores a reference to
712 the discriminant field along with the discriminator values in a
715 unsigned int flag_discriminated_union : 1;
717 /* * A discriminant telling us which field of the type_specific
718 union is being used for this type, if any. */
720 ENUM_BITFIELD(type_specific_kind) type_specific_field : 3;
722 /* * Number of fields described for this type. This field appears
723 at this location because it packs nicely here. */
727 /* * Name of this type, or NULL if none.
729 This is used for printing only. For looking up a name, look for
730 a symbol in the VAR_DOMAIN. This is generally allocated in the
731 objfile's obstack. However coffread.c uses malloc. */
735 /* * Every type is now associated with a particular objfile, and the
736 type is allocated on the objfile_obstack for that objfile. One
737 problem however, is that there are times when gdb allocates new
738 types while it is not in the process of reading symbols from a
739 particular objfile. Fortunately, these happen when the type
740 being created is a derived type of an existing type, such as in
741 lookup_pointer_type(). So we can just allocate the new type
742 using the same objfile as the existing type, but to do this we
743 need a backpointer to the objfile from the existing type. Yes
744 this is somewhat ugly, but without major overhaul of the internal
745 type system, it can't be avoided for now. */
747 union type_owner owner;
749 /* * For a pointer type, describes the type of object pointed to.
750 - For an array type, describes the type of the elements.
751 - For a function or method type, describes the type of the return value.
752 - For a range type, describes the type of the full range.
753 - For a complex type, describes the type of each coordinate.
754 - For a special record or union type encoding a dynamic-sized type
755 in GNAT, a memoized pointer to a corresponding static version of
757 - Unused otherwise. */
759 struct type *target_type;
761 /* * For structure and union types, a description of each field.
762 For set and pascal array types, there is one "field",
763 whose type is the domain type of the set or array.
764 For range types, there are two "fields",
765 the minimum and maximum values (both inclusive).
766 For enum types, each possible value is described by one "field".
767 For a function or method type, a "field" for each parameter.
768 For C++ classes, there is one field for each base class (if it is
769 a derived class) plus one field for each class data member. Member
770 functions are recorded elsewhere.
772 Using a pointer to a separate array of fields
773 allows all types to have the same size, which is useful
774 because we can allocate the space for a type before
775 we know what to put in it. */
779 struct field *fields;
781 /* * Union member used for range types. */
783 struct range_bounds *bounds;
787 /* * Slot to point to additional language-specific fields of this
790 union type_specific type_specific;
792 /* * Contains all dynamic type properties. */
793 struct dynamic_prop_list *dyn_prop_list;
796 /* * Number of bits allocated for alignment. */
798 #define TYPE_ALIGN_BITS 8
800 /* * A ``struct type'' describes a particular instance of a type, with
801 some particular qualification. */
805 /* * Type that is a pointer to this type.
806 NULL if no such pointer-to type is known yet.
807 The debugger may add the address of such a type
808 if it has to construct one later. */
810 struct type *pointer_type;
812 /* * C++: also need a reference type. */
814 struct type *reference_type;
816 /* * A C++ rvalue reference type added in C++11. */
818 struct type *rvalue_reference_type;
820 /* * Variant chain. This points to a type that differs from this
821 one only in qualifiers and length. Currently, the possible
822 qualifiers are const, volatile, code-space, data-space, and
823 address class. The length may differ only when one of the
824 address class flags are set. The variants are linked in a
825 circular ring and share MAIN_TYPE. */
829 /* * The alignment for this type. Zero means that the alignment was
830 not specified in the debug info. Note that this is stored in a
831 funny way: as the log base 2 (plus 1) of the alignment; so a
832 value of 1 means the alignment is 1, and a value of 9 means the
835 unsigned align_log2 : TYPE_ALIGN_BITS;
837 /* * Flags specific to this instance of the type, indicating where
840 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
841 binary or-ed with the target type, with a special case for
842 address class and space class. For example if this typedef does
843 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
844 instance flags are completely inherited from the target type. No
845 qualifiers can be cleared by the typedef. See also
847 unsigned instance_flags : 9;
849 /* * Length of storage for a value of this type. The value is the
850 expression in host bytes of what sizeof(type) would return. This
851 size includes padding. For example, an i386 extended-precision
852 floating point value really only occupies ten bytes, but most
853 ABI's declare its size to be 12 bytes, to preserve alignment.
854 A `struct type' representing such a floating-point type would
855 have a `length' value of 12, even though the last two bytes are
858 Since this field is expressed in host bytes, its value is appropriate
859 to pass to memcpy and such (it is assumed that GDB itself always runs
860 on an 8-bits addressable architecture). However, when using it for
861 target address arithmetic (e.g. adding it to a target address), the
862 type_length_units function should be used in order to get the length
863 expressed in target addressable memory units. */
867 /* * Core type, shared by a group of qualified types. */
869 struct main_type *main_type;
872 #define NULL_TYPE ((struct type *) 0)
877 /* * The overloaded name.
878 This is generally allocated in the objfile's obstack.
879 However stabsread.c sometimes uses malloc. */
883 /* * The number of methods with this name. */
887 /* * The list of methods. */
889 struct fn_field *fn_fields;
896 /* * If is_stub is clear, this is the mangled name which we can look
897 up to find the address of the method (FIXME: it would be cleaner
898 to have a pointer to the struct symbol here instead).
900 If is_stub is set, this is the portion of the mangled name which
901 specifies the arguments. For example, "ii", if there are two int
902 arguments, or "" if there are no arguments. See gdb_mangle_name
903 for the conversion from this format to the one used if is_stub is
906 const char *physname;
908 /* * The function type for the method.
910 (This comment used to say "The return value of the method", but
911 that's wrong. The function type is expected here, i.e. something
912 with TYPE_CODE_METHOD, and *not* the return-value type). */
916 /* * For virtual functions. First baseclass that defines this
919 struct type *fcontext;
923 unsigned int is_const:1;
924 unsigned int is_volatile:1;
925 unsigned int is_private:1;
926 unsigned int is_protected:1;
927 unsigned int is_artificial:1;
929 /* * A stub method only has some fields valid (but they are enough
930 to reconstruct the rest of the fields). */
932 unsigned int is_stub:1;
934 /* * True if this function is a constructor, false otherwise. */
936 unsigned int is_constructor : 1;
940 unsigned int dummy:9;
942 /* * Index into that baseclass's virtual function table, minus 2;
943 else if static: VOFFSET_STATIC; else: 0. */
945 unsigned int voffset:16;
947 #define VOFFSET_STATIC 1
953 /* * Unqualified name to be prefixed by owning class qualified
958 /* * Type this typedef named NAME represents. */
962 /* * True if this field was declared protected, false otherwise. */
963 unsigned int is_protected : 1;
965 /* * True if this field was declared private, false otherwise. */
966 unsigned int is_private : 1;
969 /* * C++ language-specific information for TYPE_CODE_STRUCT and
970 TYPE_CODE_UNION nodes. */
972 struct cplus_struct_type
974 /* * Number of base classes this type derives from. The
975 baseclasses are stored in the first N_BASECLASSES fields
976 (i.e. the `fields' field of the struct type). The only fields
977 of struct field that are used are: type, name, loc.bitpos. */
981 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
982 All access to this field must be through TYPE_VPTR_FIELDNO as one
983 thing it does is check whether the field has been initialized.
984 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
985 which for portability reasons doesn't initialize this field.
986 TYPE_VPTR_FIELDNO returns -1 for this case.
988 If -1, we were unable to find the virtual function table pointer in
989 initial symbol reading, and get_vptr_fieldno should be called to find
990 it if possible. get_vptr_fieldno will update this field if possible.
991 Otherwise the value is left at -1.
993 Unused if this type does not have virtual functions. */
997 /* * Number of methods with unique names. All overloaded methods
998 with the same name count only once. */
1002 /* * Number of template arguments. */
1004 unsigned short n_template_arguments;
1006 /* * One if this struct is a dynamic class, as defined by the
1007 Itanium C++ ABI: if it requires a virtual table pointer,
1008 because it or any of its base classes have one or more virtual
1009 member functions or virtual base classes. Minus one if not
1010 dynamic. Zero if not yet computed. */
1014 /* * The base class which defined the virtual function table pointer. */
1016 struct type *vptr_basetype;
1018 /* * For derived classes, the number of base classes is given by
1019 n_baseclasses and virtual_field_bits is a bit vector containing
1020 one bit per base class. If the base class is virtual, the
1021 corresponding bit will be set.
1026 class C : public B, public virtual A {};
1028 B is a baseclass of C; A is a virtual baseclass for C.
1029 This is a C++ 2.0 language feature. */
1031 B_TYPE *virtual_field_bits;
1033 /* * For classes with private fields, the number of fields is
1034 given by nfields and private_field_bits is a bit vector
1035 containing one bit per field.
1037 If the field is private, the corresponding bit will be set. */
1039 B_TYPE *private_field_bits;
1041 /* * For classes with protected fields, the number of fields is
1042 given by nfields and protected_field_bits is a bit vector
1043 containing one bit per field.
1045 If the field is private, the corresponding bit will be set. */
1047 B_TYPE *protected_field_bits;
1049 /* * For classes with fields to be ignored, either this is
1050 optimized out or this field has length 0. */
1052 B_TYPE *ignore_field_bits;
1054 /* * For classes, structures, and unions, a description of each
1055 field, which consists of an overloaded name, followed by the
1056 types of arguments that the method expects, and then the name
1057 after it has been renamed to make it distinct.
1059 fn_fieldlists points to an array of nfn_fields of these. */
1061 struct fn_fieldlist *fn_fieldlists;
1063 /* * typedefs defined inside this class. typedef_field points to
1064 an array of typedef_field_count elements. */
1066 struct decl_field *typedef_field;
1068 unsigned typedef_field_count;
1070 /* * The nested types defined by this type. nested_types points to
1071 an array of nested_types_count elements. */
1073 struct decl_field *nested_types;
1075 unsigned nested_types_count;
1077 /* * The template arguments. This is an array with
1078 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1081 struct symbol **template_arguments;
1084 /* * Struct used to store conversion rankings. */
1090 /* * When two conversions are of the same type and therefore have
1091 the same rank, subrank is used to differentiate the two.
1093 Eg: Two derived-class-pointer to base-class-pointer conversions
1094 would both have base pointer conversion rank, but the
1095 conversion with the shorter distance to the ancestor is
1096 preferable. 'subrank' would be used to reflect that. */
1101 /* * Used for ranking a function for overload resolution. */
1103 typedef std::vector<rank> badness_vector;
1105 /* * GNAT Ada-specific information for various Ada types. */
1107 struct gnat_aux_type
1109 /* * Parallel type used to encode information about dynamic types
1110 used in Ada (such as variant records, variable-size array,
1112 struct type* descriptive_type;
1115 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1119 /* * The calling convention for targets supporting multiple ABIs.
1120 Right now this is only fetched from the Dwarf-2
1121 DW_AT_calling_convention attribute. The value is one of the
1122 DW_CC enum dwarf_calling_convention constants. */
1124 unsigned calling_convention : 8;
1126 /* * Whether this function normally returns to its caller. It is
1127 set from the DW_AT_noreturn attribute if set on the
1128 DW_TAG_subprogram. */
1130 unsigned int is_noreturn : 1;
1132 /* * Only those DW_TAG_call_site's in this function that have
1133 DW_AT_call_tail_call set are linked in this list. Function
1134 without its tail call list complete
1135 (DW_AT_call_all_tail_calls or its superset
1136 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1137 DW_TAG_call_site's exist in such function. */
1139 struct call_site *tail_call_list;
1141 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1142 contains the method. */
1144 struct type *self_type;
1147 /* struct call_site_parameter can be referenced in callees by several ways. */
1149 enum call_site_parameter_kind
1151 /* * Use field call_site_parameter.u.dwarf_reg. */
1152 CALL_SITE_PARAMETER_DWARF_REG,
1154 /* * Use field call_site_parameter.u.fb_offset. */
1155 CALL_SITE_PARAMETER_FB_OFFSET,
1157 /* * Use field call_site_parameter.u.param_offset. */
1158 CALL_SITE_PARAMETER_PARAM_OFFSET
1161 struct call_site_target
1163 union field_location loc;
1165 /* * Discriminant for union field_location. */
1167 ENUM_BITFIELD(field_loc_kind) loc_kind : 3;
1170 union call_site_parameter_u
1172 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1173 as DWARF register number, for register passed
1178 /* * Offset from the callee's frame base, for stack passed
1179 parameters. This equals offset from the caller's stack
1182 CORE_ADDR fb_offset;
1184 /* * Offset relative to the start of this PER_CU to
1185 DW_TAG_formal_parameter which is referenced by both
1186 caller and the callee. */
1188 cu_offset param_cu_off;
1191 struct call_site_parameter
1193 ENUM_BITFIELD (call_site_parameter_kind) kind : 2;
1195 union call_site_parameter_u u;
1197 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1199 const gdb_byte *value;
1202 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1203 It may be NULL if not provided by DWARF. */
1205 const gdb_byte *data_value;
1206 size_t data_value_size;
1209 /* * A place where a function gets called from, represented by
1210 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1214 /* * Address of the first instruction after this call. It must be
1215 the first field as we overload core_addr_hash and core_addr_eq
1220 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1222 struct call_site *tail_call_next;
1224 /* * Describe DW_AT_call_target. Missing attribute uses
1225 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1227 struct call_site_target target;
1229 /* * Size of the PARAMETER array. */
1231 unsigned parameter_count;
1233 /* * CU of the function where the call is located. It gets used
1234 for DWARF blocks execution in the parameter array below. */
1236 struct dwarf2_per_cu_data *per_cu;
1238 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1240 struct call_site_parameter parameter[1];
1243 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1244 static structure. */
1246 extern const struct cplus_struct_type cplus_struct_default;
1248 extern void allocate_cplus_struct_type (struct type *);
1250 #define INIT_CPLUS_SPECIFIC(type) \
1251 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1252 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1253 &cplus_struct_default)
1255 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1257 #define HAVE_CPLUS_STRUCT(type) \
1258 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1259 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1261 #define INIT_NONE_SPECIFIC(type) \
1262 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1263 TYPE_MAIN_TYPE (type)->type_specific = {})
1265 extern const struct gnat_aux_type gnat_aux_default;
1267 extern void allocate_gnat_aux_type (struct type *);
1269 #define INIT_GNAT_SPECIFIC(type) \
1270 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1271 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1272 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1273 /* * A macro that returns non-zero if the type-specific data should be
1274 read as "gnat-stuff". */
1275 #define HAVE_GNAT_AUX_INFO(type) \
1276 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1278 /* * True if TYPE is known to be an Ada type of some kind. */
1279 #define ADA_TYPE_P(type) \
1280 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1281 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1282 && TYPE_FIXED_INSTANCE (type)))
1284 #define INIT_FUNC_SPECIFIC(type) \
1285 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1286 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1287 TYPE_ZALLOC (type, \
1288 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1290 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1291 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1292 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
1293 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1294 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1295 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1296 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1297 #define TYPE_CHAIN(thistype) (thistype)->chain
1298 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1299 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1300 so you only have to call check_typedef once. Since allocate_value
1301 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1302 #define TYPE_LENGTH(thistype) (thistype)->length
1304 /* * Return the alignment of the type in target addressable memory
1305 units, or 0 if no alignment was specified. */
1306 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1308 /* * Return the alignment of the type in target addressable memory
1309 units, or 0 if no alignment was specified. */
1310 extern unsigned type_raw_align (struct type *);
1312 /* * Return the alignment of the type in target addressable memory
1313 units. Return 0 if the alignment cannot be determined; but note
1314 that this makes an effort to compute the alignment even it it was
1315 not specified in the debug info. */
1316 extern unsigned type_align (struct type *);
1318 /* * Set the alignment of the type. The alignment must be a power of
1319 2. Returns false if the given value does not fit in the available
1320 space in struct type. */
1321 extern bool set_type_align (struct type *, ULONGEST);
1323 /* * Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
1324 type, you need to do TYPE_CODE (check_type (this_type)). */
1325 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
1326 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
1327 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
1329 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1330 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1331 #define TYPE_LOW_BOUND(range_type) \
1332 TYPE_RANGE_DATA(range_type)->low.data.const_val
1333 #define TYPE_HIGH_BOUND(range_type) \
1334 TYPE_RANGE_DATA(range_type)->high.data.const_val
1335 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1336 (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
1337 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1338 (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
1339 #define TYPE_HIGH_BOUND_KIND(range_type) \
1340 TYPE_RANGE_DATA(range_type)->high.kind
1341 #define TYPE_LOW_BOUND_KIND(range_type) \
1342 TYPE_RANGE_DATA(range_type)->low.kind
1344 /* Property accessors for the type data location. */
1345 #define TYPE_DATA_LOCATION(thistype) \
1346 get_dyn_prop (DYN_PROP_DATA_LOCATION, thistype)
1347 #define TYPE_DATA_LOCATION_BATON(thistype) \
1348 TYPE_DATA_LOCATION (thistype)->data.baton
1349 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1350 TYPE_DATA_LOCATION (thistype)->data.const_val
1351 #define TYPE_DATA_LOCATION_KIND(thistype) \
1352 TYPE_DATA_LOCATION (thistype)->kind
1354 /* Property accessors for the type allocated/associated. */
1355 #define TYPE_ALLOCATED_PROP(thistype) \
1356 get_dyn_prop (DYN_PROP_ALLOCATED, thistype)
1357 #define TYPE_ASSOCIATED_PROP(thistype) \
1358 get_dyn_prop (DYN_PROP_ASSOCIATED, thistype)
1360 /* Attribute accessors for dynamic properties. */
1361 #define TYPE_DYN_PROP_LIST(thistype) \
1362 TYPE_MAIN_TYPE(thistype)->dyn_prop_list
1363 #define TYPE_DYN_PROP_BATON(dynprop) \
1365 #define TYPE_DYN_PROP_ADDR(dynprop) \
1366 dynprop->data.const_val
1367 #define TYPE_DYN_PROP_KIND(dynprop) \
1371 /* Accessors for struct range_bounds data attached to an array type's
1374 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1375 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1376 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1377 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1379 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1380 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1382 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1383 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1387 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1388 /* Do not call this, use TYPE_SELF_TYPE. */
1389 extern struct type *internal_type_self_type (struct type *);
1390 extern void set_type_self_type (struct type *, struct type *);
1392 extern int internal_type_vptr_fieldno (struct type *);
1393 extern void set_type_vptr_fieldno (struct type *, int);
1394 extern struct type *internal_type_vptr_basetype (struct type *);
1395 extern void set_type_vptr_basetype (struct type *, struct type *);
1396 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1397 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1399 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1400 #define TYPE_SPECIFIC_FIELD(thistype) \
1401 TYPE_MAIN_TYPE(thistype)->type_specific_field
1402 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1403 where we're trying to print an Ada array using the C language.
1404 In that case, there is no "cplus_stuff", but the C language assumes
1405 that there is. What we do, in that case, is pretend that there is
1406 an implicit one which is the default cplus stuff. */
1407 #define TYPE_CPLUS_SPECIFIC(thistype) \
1408 (!HAVE_CPLUS_STRUCT(thistype) \
1409 ? (struct cplus_struct_type*)&cplus_struct_default \
1410 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1411 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1412 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1413 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1414 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1415 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1416 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1417 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1418 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1419 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1420 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1421 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1422 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1423 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1424 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1426 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1427 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1428 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1430 #define FIELD_TYPE(thisfld) ((thisfld).type)
1431 #define FIELD_NAME(thisfld) ((thisfld).name)
1432 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1433 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1434 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1435 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1436 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1437 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1438 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1439 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1440 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1441 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1442 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1443 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1444 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1445 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1446 #define SET_FIELD_PHYSNAME(thisfld, name) \
1447 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1448 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1449 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1450 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1451 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1452 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1453 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1454 FIELD_DWARF_BLOCK (thisfld) = (addr))
1455 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1456 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1458 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1459 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1460 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1461 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1462 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1463 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL (TYPE_FIELD (thistype, n))
1464 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1465 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1466 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1467 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1468 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1469 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1471 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1472 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1473 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1474 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1475 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1476 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1477 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1478 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1479 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1480 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1481 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1482 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1483 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1484 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1485 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1486 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1487 #define TYPE_FIELD_PRIVATE(thistype, n) \
1488 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1489 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1490 #define TYPE_FIELD_PROTECTED(thistype, n) \
1491 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1492 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1493 #define TYPE_FIELD_IGNORE(thistype, n) \
1494 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1495 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1496 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1497 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1498 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1500 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1501 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1502 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1503 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1504 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1506 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1507 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1508 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1509 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1510 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1511 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1513 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1514 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1515 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1516 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1517 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1518 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1519 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1520 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1521 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1522 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1523 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1524 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1525 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1526 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1527 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1529 /* Accessors for typedefs defined by a class. */
1530 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1531 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1532 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1533 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1534 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1535 TYPE_TYPEDEF_FIELD (thistype, n).name
1536 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1537 TYPE_TYPEDEF_FIELD (thistype, n).type
1538 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1539 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1540 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1541 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1542 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1543 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1545 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1546 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1547 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1548 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1549 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1550 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1551 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1552 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1553 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1554 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1555 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1556 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1557 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1558 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1560 #define TYPE_IS_OPAQUE(thistype) \
1561 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1562 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1563 && (TYPE_NFIELDS (thistype) == 0) \
1564 && (!HAVE_CPLUS_STRUCT (thistype) \
1565 || TYPE_NFN_FIELDS (thistype) == 0) \
1566 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1568 /* * A helper macro that returns the name of a type or "unnamed type"
1569 if the type has no name. */
1571 #define TYPE_SAFE_NAME(type) \
1572 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>"))
1574 /* * A helper macro that returns the name of an error type. If the
1575 type has a name, it is used; otherwise, a default is used. */
1577 #define TYPE_ERROR_NAME(type) \
1578 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1580 /* Given TYPE, return its floatformat. */
1581 const struct floatformat *floatformat_from_type (const struct type *type);
1585 /* Integral types. */
1587 /* Implicit size/sign (based on the architecture's ABI). */
1588 struct type *builtin_void;
1589 struct type *builtin_char;
1590 struct type *builtin_short;
1591 struct type *builtin_int;
1592 struct type *builtin_long;
1593 struct type *builtin_signed_char;
1594 struct type *builtin_unsigned_char;
1595 struct type *builtin_unsigned_short;
1596 struct type *builtin_unsigned_int;
1597 struct type *builtin_unsigned_long;
1598 struct type *builtin_half;
1599 struct type *builtin_float;
1600 struct type *builtin_double;
1601 struct type *builtin_long_double;
1602 struct type *builtin_complex;
1603 struct type *builtin_double_complex;
1604 struct type *builtin_string;
1605 struct type *builtin_bool;
1606 struct type *builtin_long_long;
1607 struct type *builtin_unsigned_long_long;
1608 struct type *builtin_decfloat;
1609 struct type *builtin_decdouble;
1610 struct type *builtin_declong;
1612 /* "True" character types.
1613 We use these for the '/c' print format, because c_char is just a
1614 one-byte integral type, which languages less laid back than C
1615 will print as ... well, a one-byte integral type. */
1616 struct type *builtin_true_char;
1617 struct type *builtin_true_unsigned_char;
1619 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1620 is for when an architecture needs to describe a register that has
1622 struct type *builtin_int0;
1623 struct type *builtin_int8;
1624 struct type *builtin_uint8;
1625 struct type *builtin_int16;
1626 struct type *builtin_uint16;
1627 struct type *builtin_int24;
1628 struct type *builtin_uint24;
1629 struct type *builtin_int32;
1630 struct type *builtin_uint32;
1631 struct type *builtin_int64;
1632 struct type *builtin_uint64;
1633 struct type *builtin_int128;
1634 struct type *builtin_uint128;
1636 /* Wide character types. */
1637 struct type *builtin_char16;
1638 struct type *builtin_char32;
1639 struct type *builtin_wchar;
1641 /* Pointer types. */
1643 /* * `pointer to data' type. Some target platforms use an implicitly
1644 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1645 struct type *builtin_data_ptr;
1647 /* * `pointer to function (returning void)' type. Harvard
1648 architectures mean that ABI function and code pointers are not
1649 interconvertible. Similarly, since ANSI, C standards have
1650 explicitly said that pointers to functions and pointers to data
1651 are not interconvertible --- that is, you can't cast a function
1652 pointer to void * and back, and expect to get the same value.
1653 However, all function pointer types are interconvertible, so void
1654 (*) () can server as a generic function pointer. */
1656 struct type *builtin_func_ptr;
1658 /* * `function returning pointer to function (returning void)' type.
1659 The final void return type is not significant for it. */
1661 struct type *builtin_func_func;
1663 /* Special-purpose types. */
1665 /* * This type is used to represent a GDB internal function. */
1667 struct type *internal_fn;
1669 /* * This type is used to represent an xmethod. */
1670 struct type *xmethod;
1673 /* * Return the type table for the specified architecture. */
1675 extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch);
1677 /* * Per-objfile types used by symbol readers. */
1681 /* Basic types based on the objfile architecture. */
1682 struct type *builtin_void;
1683 struct type *builtin_char;
1684 struct type *builtin_short;
1685 struct type *builtin_int;
1686 struct type *builtin_long;
1687 struct type *builtin_long_long;
1688 struct type *builtin_signed_char;
1689 struct type *builtin_unsigned_char;
1690 struct type *builtin_unsigned_short;
1691 struct type *builtin_unsigned_int;
1692 struct type *builtin_unsigned_long;
1693 struct type *builtin_unsigned_long_long;
1694 struct type *builtin_half;
1695 struct type *builtin_float;
1696 struct type *builtin_double;
1697 struct type *builtin_long_double;
1699 /* * This type is used to represent symbol addresses. */
1700 struct type *builtin_core_addr;
1702 /* * This type represents a type that was unrecognized in symbol
1704 struct type *builtin_error;
1706 /* * Types used for symbols with no debug information. */
1707 struct type *nodebug_text_symbol;
1708 struct type *nodebug_text_gnu_ifunc_symbol;
1709 struct type *nodebug_got_plt_symbol;
1710 struct type *nodebug_data_symbol;
1711 struct type *nodebug_unknown_symbol;
1712 struct type *nodebug_tls_symbol;
1715 /* * Return the type table for the specified objfile. */
1717 extern const struct objfile_type *objfile_type (struct objfile *objfile);
1719 /* Explicit floating-point formats. See "floatformat.h". */
1720 extern const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN];
1721 extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN];
1722 extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN];
1723 extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN];
1724 extern const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN];
1725 extern const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN];
1726 extern const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN];
1727 extern const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN];
1728 extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN];
1729 extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN];
1730 extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN];
1731 extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN];
1734 /* Allocate space for storing data associated with a particular
1735 type. We ensure that the space is allocated using the same
1736 mechanism that was used to allocate the space for the type
1737 structure itself. I.e. if the type is on an objfile's
1738 objfile_obstack, then the space for data associated with that type
1739 will also be allocated on the objfile_obstack. If the type is
1740 associated with a gdbarch, then the space for data associated with that
1741 type will also be allocated on the gdbarch_obstack.
1743 If a type is not associated with neither an objfile or a gdbarch then
1744 you should not use this macro to allocate space for data, instead you
1745 should call xmalloc directly, and ensure the memory is correctly freed
1746 when it is no longer needed. */
1748 #define TYPE_ALLOC(t,size) \
1749 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
1750 ? &TYPE_OBJFILE (t)->objfile_obstack \
1751 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
1755 /* See comment on TYPE_ALLOC. */
1757 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
1759 /* Use alloc_type to allocate a type owned by an objfile. Use
1760 alloc_type_arch to allocate a type owned by an architecture. Use
1761 alloc_type_copy to allocate a type with the same owner as a
1762 pre-existing template type, no matter whether objfile or
1764 extern struct type *alloc_type (struct objfile *);
1765 extern struct type *alloc_type_arch (struct gdbarch *);
1766 extern struct type *alloc_type_copy (const struct type *);
1768 /* * Return the type's architecture. For types owned by an
1769 architecture, that architecture is returned. For types owned by an
1770 objfile, that objfile's architecture is returned. */
1772 extern struct gdbarch *get_type_arch (const struct type *);
1774 /* * This returns the target type (or NULL) of TYPE, also skipping
1777 extern struct type *get_target_type (struct type *type);
1779 /* Return the equivalent of TYPE_LENGTH, but in number of target
1780 addressable memory units of the associated gdbarch instead of bytes. */
1782 extern unsigned int type_length_units (struct type *type);
1784 /* * Helper function to construct objfile-owned types. */
1786 extern struct type *init_type (struct objfile *, enum type_code, int,
1788 extern struct type *init_integer_type (struct objfile *, int, int,
1790 extern struct type *init_character_type (struct objfile *, int, int,
1792 extern struct type *init_boolean_type (struct objfile *, int, int,
1794 extern struct type *init_float_type (struct objfile *, int, const char *,
1795 const struct floatformat **);
1796 extern struct type *init_decfloat_type (struct objfile *, int, const char *);
1797 extern struct type *init_complex_type (struct objfile *, const char *,
1799 extern struct type *init_pointer_type (struct objfile *, int, const char *,
1802 /* Helper functions to construct architecture-owned types. */
1803 extern struct type *arch_type (struct gdbarch *, enum type_code, int,
1805 extern struct type *arch_integer_type (struct gdbarch *, int, int,
1807 extern struct type *arch_character_type (struct gdbarch *, int, int,
1809 extern struct type *arch_boolean_type (struct gdbarch *, int, int,
1811 extern struct type *arch_float_type (struct gdbarch *, int, const char *,
1812 const struct floatformat **);
1813 extern struct type *arch_decfloat_type (struct gdbarch *, int, const char *);
1814 extern struct type *arch_complex_type (struct gdbarch *, const char *,
1816 extern struct type *arch_pointer_type (struct gdbarch *, int, const char *,
1819 /* Helper functions to construct a struct or record type. An
1820 initially empty type is created using arch_composite_type().
1821 Fields are then added using append_composite_type_field*(). A union
1822 type has its size set to the largest field. A struct type has each
1823 field packed against the previous. */
1825 extern struct type *arch_composite_type (struct gdbarch *gdbarch,
1826 const char *name, enum type_code code);
1827 extern void append_composite_type_field (struct type *t, const char *name,
1828 struct type *field);
1829 extern void append_composite_type_field_aligned (struct type *t,
1833 struct field *append_composite_type_field_raw (struct type *t, const char *name,
1834 struct type *field);
1836 /* Helper functions to construct a bit flags type. An initially empty
1837 type is created using arch_flag_type(). Flags are then added using
1838 append_flag_type_field() and append_flag_type_flag(). */
1839 extern struct type *arch_flags_type (struct gdbarch *gdbarch,
1840 const char *name, int bit);
1841 extern void append_flags_type_field (struct type *type,
1842 int start_bitpos, int nr_bits,
1843 struct type *field_type, const char *name);
1844 extern void append_flags_type_flag (struct type *type, int bitpos,
1847 extern void make_vector_type (struct type *array_type);
1848 extern struct type *init_vector_type (struct type *elt_type, int n);
1850 extern struct type *lookup_reference_type (struct type *, enum type_code);
1851 extern struct type *lookup_lvalue_reference_type (struct type *);
1852 extern struct type *lookup_rvalue_reference_type (struct type *);
1855 extern struct type *make_reference_type (struct type *, struct type **,
1858 extern struct type *make_cv_type (int, int, struct type *, struct type **);
1860 extern struct type *make_restrict_type (struct type *);
1862 extern struct type *make_unqualified_type (struct type *);
1864 extern struct type *make_atomic_type (struct type *);
1866 extern void replace_type (struct type *, struct type *);
1868 extern int address_space_name_to_int (struct gdbarch *, const char *);
1870 extern const char *address_space_int_to_name (struct gdbarch *, int);
1872 extern struct type *make_type_with_address_space (struct type *type,
1873 int space_identifier);
1875 extern struct type *lookup_memberptr_type (struct type *, struct type *);
1877 extern struct type *lookup_methodptr_type (struct type *);
1879 extern void smash_to_method_type (struct type *type, struct type *self_type,
1880 struct type *to_type, struct field *args,
1881 int nargs, int varargs);
1883 extern void smash_to_memberptr_type (struct type *, struct type *,
1886 extern void smash_to_methodptr_type (struct type *, struct type *);
1888 extern struct type *allocate_stub_method (struct type *);
1890 extern const char *type_name_or_error (struct type *type);
1894 /* The field of the element, or NULL if no element was found. */
1895 struct field *field;
1897 /* The bit offset of the element in the parent structure. */
1901 /* Given a type TYPE, lookup the field and offset of the component named
1904 TYPE can be either a struct or union, or a pointer or reference to
1905 a struct or union. If it is a pointer or reference, its target
1906 type is automatically used. Thus '.' and '->' are interchangable,
1907 as specified for the definitions of the expression element types
1908 STRUCTOP_STRUCT and STRUCTOP_PTR.
1910 If NOERR is nonzero, the returned structure will have field set to
1911 NULL if there is no component named NAME.
1913 If the component NAME is a field in an anonymous substructure of
1914 TYPE, the returned offset is a "global" offset relative to TYPE
1915 rather than an offset within the substructure. */
1917 extern struct_elt lookup_struct_elt (struct type *, const char *, int);
1919 /* Given a type TYPE, lookup the type of the component named NAME.
1921 TYPE can be either a struct or union, or a pointer or reference to
1922 a struct or union. If it is a pointer or reference, its target
1923 type is automatically used. Thus '.' and '->' are interchangable,
1924 as specified for the definitions of the expression element types
1925 STRUCTOP_STRUCT and STRUCTOP_PTR.
1927 If NOERR is nonzero, return NULL if there is no component named
1930 extern struct type *lookup_struct_elt_type (struct type *, const char *, int);
1932 extern struct type *make_pointer_type (struct type *, struct type **);
1934 extern struct type *lookup_pointer_type (struct type *);
1936 extern struct type *make_function_type (struct type *, struct type **);
1938 extern struct type *lookup_function_type (struct type *);
1940 extern struct type *lookup_function_type_with_arguments (struct type *,
1944 extern struct type *create_static_range_type (struct type *, struct type *,
1948 extern struct type *create_array_type_with_stride
1949 (struct type *, struct type *, struct type *,
1950 struct dynamic_prop *, unsigned int);
1952 extern struct type *create_range_type (struct type *, struct type *,
1953 const struct dynamic_prop *,
1954 const struct dynamic_prop *);
1956 extern struct type *create_array_type (struct type *, struct type *,
1959 extern struct type *lookup_array_range_type (struct type *, LONGEST, LONGEST);
1961 extern struct type *create_string_type (struct type *, struct type *,
1963 extern struct type *lookup_string_range_type (struct type *, LONGEST, LONGEST);
1965 extern struct type *create_set_type (struct type *, struct type *);
1967 extern struct type *lookup_unsigned_typename (const struct language_defn *,
1968 struct gdbarch *, const char *);
1970 extern struct type *lookup_signed_typename (const struct language_defn *,
1971 struct gdbarch *, const char *);
1973 extern void get_unsigned_type_max (struct type *, ULONGEST *);
1975 extern void get_signed_type_minmax (struct type *, LONGEST *, LONGEST *);
1977 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
1978 ADDR specifies the location of the variable the type is bound to.
1979 If TYPE has no dynamic properties return TYPE; otherwise a new type with
1980 static properties is returned. */
1981 extern struct type *resolve_dynamic_type (struct type *type,
1982 const gdb_byte *valaddr,
1985 /* * Predicate if the type has dynamic values, which are not resolved yet. */
1986 extern int is_dynamic_type (struct type *type);
1988 /* * Return the dynamic property of the requested KIND from TYPE's
1989 list of dynamic properties. */
1990 extern struct dynamic_prop *get_dyn_prop
1991 (enum dynamic_prop_node_kind kind, const struct type *type);
1993 /* * Given a dynamic property PROP of a given KIND, add this dynamic
1994 property to the given TYPE.
1996 This function assumes that TYPE is objfile-owned. */
1997 extern void add_dyn_prop
1998 (enum dynamic_prop_node_kind kind, struct dynamic_prop prop,
2001 extern void remove_dyn_prop (enum dynamic_prop_node_kind prop_kind,
2004 extern struct type *check_typedef (struct type *);
2006 extern void check_stub_method_group (struct type *, int);
2008 extern char *gdb_mangle_name (struct type *, int, int);
2010 extern struct type *lookup_typename (const struct language_defn *,
2011 struct gdbarch *, const char *,
2012 const struct block *, int);
2014 extern struct type *lookup_template_type (const char *, struct type *,
2015 const struct block *);
2017 extern int get_vptr_fieldno (struct type *, struct type **);
2019 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *);
2021 extern int get_array_bounds (struct type *type, LONGEST *low_bound,
2022 LONGEST *high_bound);
2024 extern int discrete_position (struct type *type, LONGEST val, LONGEST *pos);
2026 extern int class_types_same_p (const struct type *, const struct type *);
2028 extern int is_ancestor (struct type *, struct type *);
2030 extern int is_public_ancestor (struct type *, struct type *);
2032 extern int is_unique_ancestor (struct type *, struct value *);
2034 /* Overload resolution */
2036 /* * Badness if parameter list length doesn't match arg list length. */
2037 extern const struct rank LENGTH_MISMATCH_BADNESS;
2039 /* * Dummy badness value for nonexistent parameter positions. */
2040 extern const struct rank TOO_FEW_PARAMS_BADNESS;
2041 /* * Badness if no conversion among types. */
2042 extern const struct rank INCOMPATIBLE_TYPE_BADNESS;
2044 /* * Badness of an exact match. */
2045 extern const struct rank EXACT_MATCH_BADNESS;
2047 /* * Badness of integral promotion. */
2048 extern const struct rank INTEGER_PROMOTION_BADNESS;
2049 /* * Badness of floating promotion. */
2050 extern const struct rank FLOAT_PROMOTION_BADNESS;
2051 /* * Badness of converting a derived class pointer
2052 to a base class pointer. */
2053 extern const struct rank BASE_PTR_CONVERSION_BADNESS;
2054 /* * Badness of integral conversion. */
2055 extern const struct rank INTEGER_CONVERSION_BADNESS;
2056 /* * Badness of floating conversion. */
2057 extern const struct rank FLOAT_CONVERSION_BADNESS;
2058 /* * Badness of integer<->floating conversions. */
2059 extern const struct rank INT_FLOAT_CONVERSION_BADNESS;
2060 /* * Badness of conversion of pointer to void pointer. */
2061 extern const struct rank VOID_PTR_CONVERSION_BADNESS;
2062 /* * Badness of conversion to boolean. */
2063 extern const struct rank BOOL_CONVERSION_BADNESS;
2064 /* * Badness of converting derived to base class. */
2065 extern const struct rank BASE_CONVERSION_BADNESS;
2066 /* * Badness of converting from non-reference to reference. Subrank
2067 is the type of reference conversion being done. */
2068 extern const struct rank REFERENCE_CONVERSION_BADNESS;
2069 /* * Conversion to rvalue reference. */
2070 #define REFERENCE_CONVERSION_RVALUE 1
2071 /* * Conversion to const lvalue reference. */
2072 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2074 /* * Badness of converting integer 0 to NULL pointer. */
2075 extern const struct rank NULL_POINTER_CONVERSION;
2076 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2078 extern const struct rank CV_CONVERSION_BADNESS;
2079 #define CV_CONVERSION_CONST 1
2080 #define CV_CONVERSION_VOLATILE 2
2082 /* Non-standard conversions allowed by the debugger */
2084 /* * Converting a pointer to an int is usually OK. */
2085 extern const struct rank NS_POINTER_CONVERSION_BADNESS;
2087 /* * Badness of converting a (non-zero) integer constant
2089 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS;
2091 extern struct rank sum_ranks (struct rank a, struct rank b);
2092 extern int compare_ranks (struct rank a, struct rank b);
2094 extern int compare_badness (const badness_vector &,
2095 const badness_vector &);
2097 extern badness_vector rank_function (gdb::array_view<type *> parms,
2098 gdb::array_view<value *> args);
2100 extern struct rank rank_one_type (struct type *, struct type *,
2103 extern void recursive_dump_type (struct type *, int);
2105 extern int field_is_static (struct field *);
2109 extern void print_scalar_formatted (const gdb_byte *, struct type *,
2110 const struct value_print_options *,
2111 int, struct ui_file *);
2113 extern int can_dereference (struct type *);
2115 extern int is_integral_type (struct type *);
2117 extern int is_floating_type (struct type *);
2119 extern int is_scalar_type (struct type *type);
2121 extern int is_scalar_type_recursive (struct type *);
2123 extern int class_or_union_p (const struct type *);
2125 extern void maintenance_print_type (const char *, int);
2127 extern htab_t create_copied_types_hash (struct objfile *objfile);
2129 extern struct type *copy_type_recursive (struct objfile *objfile,
2131 htab_t copied_types);
2133 extern struct type *copy_type (const struct type *type);
2135 extern bool types_equal (struct type *, struct type *);
2137 extern bool types_deeply_equal (struct type *, struct type *);
2139 extern int type_not_allocated (const struct type *type);
2141 extern int type_not_associated (const struct type *type);
2143 #endif /* GDBTYPES_H */