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 /* * A compiler may supply dwarf instrumentation
223 that indicates the desired endian interpretation of the variable
224 differs from the native endian representation. */
226 #define TYPE_ENDIANITY_NOT_DEFAULT(t) (TYPE_MAIN_TYPE (t)->flag_endianity_not_default)
228 /* * This appears in a type's flags word if it is a stub type (e.g.,
229 if someone referenced a type that wasn't defined in a source file
230 via (struct sir_not_appearing_in_this_film *)). */
232 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
234 /* * The target type of this type is a stub type, and this type needs
235 to be updated if it gets un-stubbed in check_typedef. Used for
236 arrays and ranges, in which TYPE_LENGTH of the array/range gets set
237 based on the TYPE_LENGTH of the target type. Also, set for
238 TYPE_CODE_TYPEDEF. */
240 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
242 /* * This is a function type which appears to have a prototype. We
243 need this for function calls in order to tell us if it's necessary
244 to coerce the args, or to just do the standard conversions. This
245 is used with a short field. */
247 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
249 /* * This flag is used to indicate that processing for this type
252 (Mostly intended for HP platforms, where class methods, for
253 instance, can be encountered before their classes in the debug
254 info; the incomplete type has to be marked so that the class and
255 the method can be assigned correct types.) */
257 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
259 /* * FIXME drow/2002-06-03: Only used for methods, but applies as well
262 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
264 /* * Identify a vector type. Gcc is handling this by adding an extra
265 attribute to the array type. We slurp that in as a new flag of a
266 type. This is used only in dwarf2read.c. */
267 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
269 /* * The debugging formats (especially STABS) do not contain enough
270 information to represent all Ada types---especially those whose
271 size depends on dynamic quantities. Therefore, the GNAT Ada
272 compiler includes extra information in the form of additional type
273 definitions connected by naming conventions. This flag indicates
274 that the type is an ordinary (unencoded) GDB type that has been
275 created from the necessary run-time information, and does not need
276 further interpretation. Optionally marks ordinary, fixed-size GDB
279 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
281 /* * This debug target supports TYPE_STUB(t). In the unsupported case
282 we have to rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE().
283 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only
284 guessed the TYPE_STUB(t) value (see dwarfread.c). */
286 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
288 /* * Not textual. By default, GDB treats all single byte integers as
289 characters (or elements of strings) unless this flag is set. */
291 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
293 /* * Used only for TYPE_CODE_FUNC where it specifies the real function
294 address is returned by this function call. TYPE_TARGET_TYPE
295 determines the final returned function type to be presented to
298 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
300 /* * Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
301 the objfile retrieved as TYPE_OBJFILE. Otherwise, the type is
302 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
304 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
305 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
306 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
308 /* * True if this type was declared using the "class" keyword. This is
309 only valid for C++ structure and enum types. If false, a structure
310 was declared as a "struct"; if true it was declared "class". For
311 enum types, this is true when "enum class" or "enum struct" was
312 used to declare the type.. */
314 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
316 /* * True if this type is a "flag" enum. A flag enum is one where all
317 the values are pairwise disjoint when "and"ed together. This
318 affects how enum values are printed. */
320 #define TYPE_FLAG_ENUM(t) (TYPE_MAIN_TYPE (t)->flag_flag_enum)
322 /* * True if this type is a discriminated union type. Only valid for
323 TYPE_CODE_UNION. A discriminated union stores a reference to the
324 discriminant field along with the discriminator values in a dynamic
327 #define TYPE_FLAG_DISCRIMINATED_UNION(t) \
328 (TYPE_MAIN_TYPE (t)->flag_discriminated_union)
330 /* * Constant type. If this is set, the corresponding type has a
333 #define TYPE_CONST(t) ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST) != 0)
335 /* * Volatile type. If this is set, the corresponding type has a
336 volatile modifier. */
338 #define TYPE_VOLATILE(t) \
339 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE) != 0)
341 /* * Restrict type. If this is set, the corresponding type has a
342 restrict modifier. */
344 #define TYPE_RESTRICT(t) \
345 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_RESTRICT) != 0)
347 /* * Atomic type. If this is set, the corresponding type has an
350 #define TYPE_ATOMIC(t) \
351 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_ATOMIC) != 0)
353 /* * True if this type represents either an lvalue or lvalue reference type. */
355 #define TYPE_IS_REFERENCE(t) \
356 (TYPE_CODE (t) == TYPE_CODE_REF || TYPE_CODE (t) == TYPE_CODE_RVALUE_REF)
358 /* * True if this type is allocatable. */
359 #define TYPE_IS_ALLOCATABLE(t) \
360 (get_dyn_prop (DYN_PROP_ALLOCATED, t) != NULL)
362 /* * Instruction-space delimited type. This is for Harvard architectures
363 which have separate instruction and data address spaces (and perhaps
366 GDB usually defines a flat address space that is a superset of the
367 architecture's two (or more) address spaces, but this is an extension
368 of the architecture's model.
370 If TYPE_INSTANCE_FLAG_CODE_SPACE is set, an object of the corresponding type
371 resides in instruction memory, even if its address (in the extended
372 flat address space) does not reflect this.
374 Similarly, if TYPE_INSTANCE_FLAG_DATA_SPACE is set, then an object of the
375 corresponding type resides in the data memory space, even if
376 this is not indicated by its (flat address space) address.
378 If neither flag is set, the default space for functions / methods
379 is instruction space, and for data objects is data memory. */
381 #define TYPE_CODE_SPACE(t) \
382 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE) != 0)
384 #define TYPE_DATA_SPACE(t) \
385 ((TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE) != 0)
387 /* * Address class flags. Some environments provide for pointers
388 whose size is different from that of a normal pointer or address
389 types where the bits are interpreted differently than normal
390 addresses. The TYPE_INSTANCE_FLAG_ADDRESS_CLASS_n flags may be used in
391 target specific ways to represent these different types of address
394 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
395 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
396 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
397 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
398 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
399 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
400 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
401 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
403 /* * Information needed for a discriminated union. A discriminated
404 union is handled somewhat differently from an ordinary union.
406 One field is designated as the discriminant. Only one other field
407 is active at a time; which one depends on the value of the
408 discriminant and the data in this structure.
410 Additionally, it is possible to have a univariant discriminated
411 union. In this case, the union has just a single field, which is
412 assumed to be the only active variant -- in this case no
413 discriminant is provided. */
415 struct discriminant_info
417 /* * The index of the discriminant field. If -1, then this union
418 must have just a single field. */
420 int discriminant_index
;
422 /* * The index of the default branch of the union. If -1, then
423 there is no default branch. */
427 /* * The discriminant values corresponding to each branch. This has
428 a number of entries equal to the number of fields in this union.
429 If discriminant_index is not -1, then that entry in this array is
430 not used. If default_index is not -1, then that entry in this
431 array is not used. */
433 ULONGEST discriminants
[1];
436 enum dynamic_prop_kind
438 PROP_UNDEFINED
, /* Not defined. */
439 PROP_CONST
, /* Constant. */
440 PROP_ADDR_OFFSET
, /* Address offset. */
441 PROP_LOCEXPR
, /* Location expression. */
442 PROP_LOCLIST
/* Location list. */
445 union dynamic_prop_data
447 /* Storage for constant property. */
451 /* Storage for dynamic property. */
456 /* * Used to store a dynamic property. */
460 /* Determine which field of the union dynamic_prop.data is used. */
461 enum dynamic_prop_kind kind
;
463 /* Storage for dynamic or static value. */
464 union dynamic_prop_data data
;
467 /* Compare two dynamic_prop objects for equality. dynamic_prop
468 instances are equal iff they have the same type and storage. */
469 extern bool operator== (const dynamic_prop
&l
, const dynamic_prop
&r
);
471 /* Compare two dynamic_prop objects for inequality. */
472 static inline bool operator!= (const dynamic_prop
&l
, const dynamic_prop
&r
)
477 /* * Define a type's dynamic property node kind. */
478 enum dynamic_prop_node_kind
480 /* A property providing a type's data location.
481 Evaluating this field yields to the location of an object's data. */
482 DYN_PROP_DATA_LOCATION
,
484 /* A property representing DW_AT_allocated. The presence of this attribute
485 indicates that the object of the type can be allocated/deallocated. */
488 /* A property representing DW_AT_allocated. The presence of this attribute
489 indicated that the object of the type can be associated. */
492 /* A property providing an array's byte stride. */
493 DYN_PROP_BYTE_STRIDE
,
495 /* A property holding information about a discriminated union. */
496 DYN_PROP_DISCRIMINATED
,
499 /* * List for dynamic type attributes. */
500 struct dynamic_prop_list
502 /* The kind of dynamic prop in this node. */
503 enum dynamic_prop_node_kind prop_kind
;
505 /* The dynamic property itself. */
506 struct dynamic_prop prop
;
508 /* A pointer to the next dynamic property. */
509 struct dynamic_prop_list
*next
;
512 /* * Determine which field of the union main_type.fields[x].loc is
517 FIELD_LOC_KIND_BITPOS
, /**< bitpos */
518 FIELD_LOC_KIND_ENUMVAL
, /**< enumval */
519 FIELD_LOC_KIND_PHYSADDR
, /**< physaddr */
520 FIELD_LOC_KIND_PHYSNAME
, /**< physname */
521 FIELD_LOC_KIND_DWARF_BLOCK
/**< dwarf_block */
524 /* * A discriminant to determine which field in the
525 main_type.type_specific union is being used, if any.
527 For types such as TYPE_CODE_FLT, the use of this
528 discriminant is really redundant, as we know from the type code
529 which field is going to be used. As such, it would be possible to
530 reduce the size of this enum in order to save a bit or two for
531 other fields of struct main_type. But, since we still have extra
532 room , and for the sake of clarity and consistency, we treat all fields
533 of the union the same way. */
535 enum type_specific_kind
538 TYPE_SPECIFIC_CPLUS_STUFF
,
539 TYPE_SPECIFIC_GNAT_STUFF
,
540 TYPE_SPECIFIC_FLOATFORMAT
,
541 /* Note: This is used by TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
543 TYPE_SPECIFIC_SELF_TYPE
548 struct objfile
*objfile
;
549 struct gdbarch
*gdbarch
;
554 /* * Position of this field, counting in bits from start of
555 containing structure. For gdbarch_bits_big_endian=1
556 targets, it is the bit offset to the MSB. For
557 gdbarch_bits_big_endian=0 targets, it is the bit offset to
565 /* * For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then
566 physaddr is the location (in the target) of the static
567 field. Otherwise, physname is the mangled label of the
571 const char *physname
;
573 /* * The field location can be computed by evaluating the
574 following DWARF block. Its DATA is allocated on
575 objfile_obstack - no CU load is needed to access it. */
577 struct dwarf2_locexpr_baton
*dwarf_block
;
582 union field_location loc
;
584 /* * For a function or member type, this is 1 if the argument is
585 marked artificial. Artificial arguments should not be shown
586 to the user. For TYPE_CODE_RANGE it is set if the specific
587 bound is not defined. */
589 unsigned int artificial
: 1;
591 /* * Discriminant for union field_location. */
593 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
595 /* * Size of this field, in bits, or zero if not packed.
596 If non-zero in an array type, indicates the element size in
597 bits (used only in Ada at the moment).
598 For an unpacked field, the field's type's length
599 says how many bytes the field occupies. */
601 unsigned int bitsize
: 28;
603 /* * In a struct or union type, type of this field.
604 - In a function or member type, type of this argument.
605 - In an array type, the domain-type of the array. */
609 /* * Name of field, value or argument.
610 NULL for range bounds, array domains, and member function
618 /* * Low bound of range. */
620 struct dynamic_prop low
;
622 /* * High bound of range. */
624 struct dynamic_prop high
;
626 /* * The bias. Sometimes a range value is biased before storage.
627 The bias is added to the stored bits to form the true value. */
631 /* True if HIGH range bound contains the number of elements in the
632 subrange. This affects how the final high bound is computed. */
634 int flag_upper_bound_is_count
: 1;
636 /* True if LOW or/and HIGH are resolved into a static bound from
639 int flag_bound_evaluated
: 1;
642 /* Compare two range_bounds objects for equality. Simply does
643 memberwise comparison. */
644 extern bool operator== (const range_bounds
&l
, const range_bounds
&r
);
646 /* Compare two range_bounds objects for inequality. */
647 static inline bool operator!= (const range_bounds
&l
, const range_bounds
&r
)
654 /* * CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to
655 point to cplus_struct_default, a default static instance of a
656 struct cplus_struct_type. */
658 struct cplus_struct_type
*cplus_stuff
;
660 /* * GNAT_STUFF is for types for which the GNAT Ada compiler
661 provides additional information. */
663 struct gnat_aux_type
*gnat_stuff
;
665 /* * FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to a
666 floatformat object that describes the floating-point value
667 that resides within the type. */
669 const struct floatformat
*floatformat
;
671 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
673 struct func_type
*func_stuff
;
675 /* * For types that are pointer to member types (TYPE_CODE_METHODPTR,
676 TYPE_CODE_MEMBERPTR), SELF_TYPE is the type that this pointer
679 struct type
*self_type
;
682 /* * Main structure representing a type in GDB.
684 This structure is space-critical. Its layout has been tweaked to
685 reduce the space used. */
689 /* * Code for kind of type. */
691 ENUM_BITFIELD(type_code
) code
: 8;
693 /* * Flags about this type. These fields appear at this location
694 because they packs nicely here. See the TYPE_* macros for
695 documentation about these fields. */
697 unsigned int flag_unsigned
: 1;
698 unsigned int flag_nosign
: 1;
699 unsigned int flag_stub
: 1;
700 unsigned int flag_target_stub
: 1;
701 unsigned int flag_static
: 1;
702 unsigned int flag_prototyped
: 1;
703 unsigned int flag_incomplete
: 1;
704 unsigned int flag_varargs
: 1;
705 unsigned int flag_vector
: 1;
706 unsigned int flag_stub_supported
: 1;
707 unsigned int flag_gnu_ifunc
: 1;
708 unsigned int flag_fixed_instance
: 1;
709 unsigned int flag_objfile_owned
: 1;
710 unsigned int flag_endianity_not_default
: 1;
712 /* * True if this type was declared with "class" rather than
715 unsigned int flag_declared_class
: 1;
717 /* * True if this is an enum type with disjoint values. This
718 affects how the enum is printed. */
720 unsigned int flag_flag_enum
: 1;
722 /* * True if this type is a discriminated union type. Only valid
723 for TYPE_CODE_UNION. A discriminated union stores a reference to
724 the discriminant field along with the discriminator values in a
727 unsigned int flag_discriminated_union
: 1;
729 /* * A discriminant telling us which field of the type_specific
730 union is being used for this type, if any. */
732 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
734 /* * Number of fields described for this type. This field appears
735 at this location because it packs nicely here. */
739 /* * Name of this type, or NULL if none.
741 This is used for printing only. For looking up a name, look for
742 a symbol in the VAR_DOMAIN. This is generally allocated in the
743 objfile's obstack. However coffread.c uses malloc. */
747 /* * Every type is now associated with a particular objfile, and the
748 type is allocated on the objfile_obstack for that objfile. One
749 problem however, is that there are times when gdb allocates new
750 types while it is not in the process of reading symbols from a
751 particular objfile. Fortunately, these happen when the type
752 being created is a derived type of an existing type, such as in
753 lookup_pointer_type(). So we can just allocate the new type
754 using the same objfile as the existing type, but to do this we
755 need a backpointer to the objfile from the existing type. Yes
756 this is somewhat ugly, but without major overhaul of the internal
757 type system, it can't be avoided for now. */
759 union type_owner owner
;
761 /* * For a pointer type, describes the type of object pointed to.
762 - For an array type, describes the type of the elements.
763 - For a function or method type, describes the type of the return value.
764 - For a range type, describes the type of the full range.
765 - For a complex type, describes the type of each coordinate.
766 - For a special record or union type encoding a dynamic-sized type
767 in GNAT, a memoized pointer to a corresponding static version of
769 - Unused otherwise. */
771 struct type
*target_type
;
773 /* * For structure and union types, a description of each field.
774 For set and pascal array types, there is one "field",
775 whose type is the domain type of the set or array.
776 For range types, there are two "fields",
777 the minimum and maximum values (both inclusive).
778 For enum types, each possible value is described by one "field".
779 For a function or method type, a "field" for each parameter.
780 For C++ classes, there is one field for each base class (if it is
781 a derived class) plus one field for each class data member. Member
782 functions are recorded elsewhere.
784 Using a pointer to a separate array of fields
785 allows all types to have the same size, which is useful
786 because we can allocate the space for a type before
787 we know what to put in it. */
791 struct field
*fields
;
793 /* * Union member used for range types. */
795 struct range_bounds
*bounds
;
799 /* * Slot to point to additional language-specific fields of this
802 union type_specific type_specific
;
804 /* * Contains all dynamic type properties. */
805 struct dynamic_prop_list
*dyn_prop_list
;
808 /* * Number of bits allocated for alignment. */
810 #define TYPE_ALIGN_BITS 8
812 /* * A ``struct type'' describes a particular instance of a type, with
813 some particular qualification. */
817 /* * Type that is a pointer to this type.
818 NULL if no such pointer-to type is known yet.
819 The debugger may add the address of such a type
820 if it has to construct one later. */
822 struct type
*pointer_type
;
824 /* * C++: also need a reference type. */
826 struct type
*reference_type
;
828 /* * A C++ rvalue reference type added in C++11. */
830 struct type
*rvalue_reference_type
;
832 /* * Variant chain. This points to a type that differs from this
833 one only in qualifiers and length. Currently, the possible
834 qualifiers are const, volatile, code-space, data-space, and
835 address class. The length may differ only when one of the
836 address class flags are set. The variants are linked in a
837 circular ring and share MAIN_TYPE. */
841 /* * The alignment for this type. Zero means that the alignment was
842 not specified in the debug info. Note that this is stored in a
843 funny way: as the log base 2 (plus 1) of the alignment; so a
844 value of 1 means the alignment is 1, and a value of 9 means the
847 unsigned align_log2
: TYPE_ALIGN_BITS
;
849 /* * Flags specific to this instance of the type, indicating where
852 For TYPE_CODE_TYPEDEF the flags of the typedef type should be
853 binary or-ed with the target type, with a special case for
854 address class and space class. For example if this typedef does
855 not specify any new qualifiers, TYPE_INSTANCE_FLAGS is 0 and the
856 instance flags are completely inherited from the target type. No
857 qualifiers can be cleared by the typedef. See also
859 unsigned instance_flags
: 9;
861 /* * Length of storage for a value of this type. The value is the
862 expression in host bytes of what sizeof(type) would return. This
863 size includes padding. For example, an i386 extended-precision
864 floating point value really only occupies ten bytes, but most
865 ABI's declare its size to be 12 bytes, to preserve alignment.
866 A `struct type' representing such a floating-point type would
867 have a `length' value of 12, even though the last two bytes are
870 Since this field is expressed in host bytes, its value is appropriate
871 to pass to memcpy and such (it is assumed that GDB itself always runs
872 on an 8-bits addressable architecture). However, when using it for
873 target address arithmetic (e.g. adding it to a target address), the
874 type_length_units function should be used in order to get the length
875 expressed in target addressable memory units. */
879 /* * Core type, shared by a group of qualified types. */
881 struct main_type
*main_type
;
884 #define NULL_TYPE ((struct type *) 0)
889 /* * The overloaded name.
890 This is generally allocated in the objfile's obstack.
891 However stabsread.c sometimes uses malloc. */
895 /* * The number of methods with this name. */
899 /* * The list of methods. */
901 struct fn_field
*fn_fields
;
908 /* * If is_stub is clear, this is the mangled name which we can look
909 up to find the address of the method (FIXME: it would be cleaner
910 to have a pointer to the struct symbol here instead).
912 If is_stub is set, this is the portion of the mangled name which
913 specifies the arguments. For example, "ii", if there are two int
914 arguments, or "" if there are no arguments. See gdb_mangle_name
915 for the conversion from this format to the one used if is_stub is
918 const char *physname
;
920 /* * The function type for the method.
922 (This comment used to say "The return value of the method", but
923 that's wrong. The function type is expected here, i.e. something
924 with TYPE_CODE_METHOD, and *not* the return-value type). */
928 /* * For virtual functions. First baseclass that defines this
931 struct type
*fcontext
;
935 unsigned int is_const
:1;
936 unsigned int is_volatile
:1;
937 unsigned int is_private
:1;
938 unsigned int is_protected
:1;
939 unsigned int is_artificial
:1;
941 /* * A stub method only has some fields valid (but they are enough
942 to reconstruct the rest of the fields). */
944 unsigned int is_stub
:1;
946 /* * True if this function is a constructor, false otherwise. */
948 unsigned int is_constructor
: 1;
952 unsigned int dummy
:9;
954 /* * Index into that baseclass's virtual function table, minus 2;
955 else if static: VOFFSET_STATIC; else: 0. */
957 unsigned int voffset
:16;
959 #define VOFFSET_STATIC 1
965 /* * Unqualified name to be prefixed by owning class qualified
970 /* * Type this typedef named NAME represents. */
974 /* * True if this field was declared protected, false otherwise. */
975 unsigned int is_protected
: 1;
977 /* * True if this field was declared private, false otherwise. */
978 unsigned int is_private
: 1;
981 /* * C++ language-specific information for TYPE_CODE_STRUCT and
982 TYPE_CODE_UNION nodes. */
984 struct cplus_struct_type
986 /* * Number of base classes this type derives from. The
987 baseclasses are stored in the first N_BASECLASSES fields
988 (i.e. the `fields' field of the struct type). The only fields
989 of struct field that are used are: type, name, loc.bitpos. */
993 /* * Field number of the virtual function table pointer in VPTR_BASETYPE.
994 All access to this field must be through TYPE_VPTR_FIELDNO as one
995 thing it does is check whether the field has been initialized.
996 Initially TYPE_RAW_CPLUS_SPECIFIC has the value of cplus_struct_default,
997 which for portability reasons doesn't initialize this field.
998 TYPE_VPTR_FIELDNO returns -1 for this case.
1000 If -1, we were unable to find the virtual function table pointer in
1001 initial symbol reading, and get_vptr_fieldno should be called to find
1002 it if possible. get_vptr_fieldno will update this field if possible.
1003 Otherwise the value is left at -1.
1005 Unused if this type does not have virtual functions. */
1009 /* * Number of methods with unique names. All overloaded methods
1010 with the same name count only once. */
1014 /* * Number of template arguments. */
1016 unsigned short n_template_arguments
;
1018 /* * One if this struct is a dynamic class, as defined by the
1019 Itanium C++ ABI: if it requires a virtual table pointer,
1020 because it or any of its base classes have one or more virtual
1021 member functions or virtual base classes. Minus one if not
1022 dynamic. Zero if not yet computed. */
1026 /* * The base class which defined the virtual function table pointer. */
1028 struct type
*vptr_basetype
;
1030 /* * For derived classes, the number of base classes is given by
1031 n_baseclasses and virtual_field_bits is a bit vector containing
1032 one bit per base class. If the base class is virtual, the
1033 corresponding bit will be set.
1038 class C : public B, public virtual A {};
1040 B is a baseclass of C; A is a virtual baseclass for C.
1041 This is a C++ 2.0 language feature. */
1043 B_TYPE
*virtual_field_bits
;
1045 /* * For classes with private fields, the number of fields is
1046 given by nfields and private_field_bits is a bit vector
1047 containing one bit per field.
1049 If the field is private, the corresponding bit will be set. */
1051 B_TYPE
*private_field_bits
;
1053 /* * For classes with protected fields, the number of fields is
1054 given by nfields and protected_field_bits is a bit vector
1055 containing one bit per field.
1057 If the field is private, the corresponding bit will be set. */
1059 B_TYPE
*protected_field_bits
;
1061 /* * For classes with fields to be ignored, either this is
1062 optimized out or this field has length 0. */
1064 B_TYPE
*ignore_field_bits
;
1066 /* * For classes, structures, and unions, a description of each
1067 field, which consists of an overloaded name, followed by the
1068 types of arguments that the method expects, and then the name
1069 after it has been renamed to make it distinct.
1071 fn_fieldlists points to an array of nfn_fields of these. */
1073 struct fn_fieldlist
*fn_fieldlists
;
1075 /* * typedefs defined inside this class. typedef_field points to
1076 an array of typedef_field_count elements. */
1078 struct decl_field
*typedef_field
;
1080 unsigned typedef_field_count
;
1082 /* * The nested types defined by this type. nested_types points to
1083 an array of nested_types_count elements. */
1085 struct decl_field
*nested_types
;
1087 unsigned nested_types_count
;
1089 /* * The template arguments. This is an array with
1090 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
1093 struct symbol
**template_arguments
;
1096 /* * Struct used to store conversion rankings. */
1102 /* * When two conversions are of the same type and therefore have
1103 the same rank, subrank is used to differentiate the two.
1105 Eg: Two derived-class-pointer to base-class-pointer conversions
1106 would both have base pointer conversion rank, but the
1107 conversion with the shorter distance to the ancestor is
1108 preferable. 'subrank' would be used to reflect that. */
1113 /* * Used for ranking a function for overload resolution. */
1115 typedef std::vector
<rank
> badness_vector
;
1117 /* * GNAT Ada-specific information for various Ada types. */
1119 struct gnat_aux_type
1121 /* * Parallel type used to encode information about dynamic types
1122 used in Ada (such as variant records, variable-size array,
1124 struct type
* descriptive_type
;
1127 /* * For TYPE_CODE_FUNC and TYPE_CODE_METHOD types. */
1131 /* * The calling convention for targets supporting multiple ABIs.
1132 Right now this is only fetched from the Dwarf-2
1133 DW_AT_calling_convention attribute. The value is one of the
1134 DW_CC enum dwarf_calling_convention constants. */
1136 unsigned calling_convention
: 8;
1138 /* * Whether this function normally returns to its caller. It is
1139 set from the DW_AT_noreturn attribute if set on the
1140 DW_TAG_subprogram. */
1142 unsigned int is_noreturn
: 1;
1144 /* * Only those DW_TAG_call_site's in this function that have
1145 DW_AT_call_tail_call set are linked in this list. Function
1146 without its tail call list complete
1147 (DW_AT_call_all_tail_calls or its superset
1148 DW_AT_call_all_calls) has TAIL_CALL_LIST NULL, even if some
1149 DW_TAG_call_site's exist in such function. */
1151 struct call_site
*tail_call_list
;
1153 /* * For method types (TYPE_CODE_METHOD), the aggregate type that
1154 contains the method. */
1156 struct type
*self_type
;
1159 /* struct call_site_parameter can be referenced in callees by several ways. */
1161 enum call_site_parameter_kind
1163 /* * Use field call_site_parameter.u.dwarf_reg. */
1164 CALL_SITE_PARAMETER_DWARF_REG
,
1166 /* * Use field call_site_parameter.u.fb_offset. */
1167 CALL_SITE_PARAMETER_FB_OFFSET
,
1169 /* * Use field call_site_parameter.u.param_offset. */
1170 CALL_SITE_PARAMETER_PARAM_OFFSET
1173 struct call_site_target
1175 union field_location loc
;
1177 /* * Discriminant for union field_location. */
1179 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 3;
1182 union call_site_parameter_u
1184 /* * DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX
1185 as DWARF register number, for register passed
1190 /* * Offset from the callee's frame base, for stack passed
1191 parameters. This equals offset from the caller's stack
1194 CORE_ADDR fb_offset
;
1196 /* * Offset relative to the start of this PER_CU to
1197 DW_TAG_formal_parameter which is referenced by both
1198 caller and the callee. */
1200 cu_offset param_cu_off
;
1203 struct call_site_parameter
1205 ENUM_BITFIELD (call_site_parameter_kind
) kind
: 2;
1207 union call_site_parameter_u u
;
1209 /* * DW_TAG_formal_parameter's DW_AT_call_value. It is never NULL. */
1211 const gdb_byte
*value
;
1214 /* * DW_TAG_formal_parameter's DW_AT_call_data_value.
1215 It may be NULL if not provided by DWARF. */
1217 const gdb_byte
*data_value
;
1218 size_t data_value_size
;
1221 /* * A place where a function gets called from, represented by
1222 DW_TAG_call_site. It can be looked up from symtab->call_site_htab. */
1226 /* * Address of the first instruction after this call. It must be
1227 the first field as we overload core_addr_hash and core_addr_eq
1232 /* * List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
1234 struct call_site
*tail_call_next
;
1236 /* * Describe DW_AT_call_target. Missing attribute uses
1237 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
1239 struct call_site_target target
;
1241 /* * Size of the PARAMETER array. */
1243 unsigned parameter_count
;
1245 /* * CU of the function where the call is located. It gets used
1246 for DWARF blocks execution in the parameter array below. */
1248 struct dwarf2_per_cu_data
*per_cu
;
1250 /* * Describe DW_TAG_call_site's DW_TAG_formal_parameter. */
1252 struct call_site_parameter parameter
[1];
1255 /* * The default value of TYPE_CPLUS_SPECIFIC(T) points to this shared
1256 static structure. */
1258 extern const struct cplus_struct_type cplus_struct_default
;
1260 extern void allocate_cplus_struct_type (struct type
*);
1262 #define INIT_CPLUS_SPECIFIC(type) \
1263 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
1264 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
1265 &cplus_struct_default)
1267 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
1269 #define HAVE_CPLUS_STRUCT(type) \
1270 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
1271 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
1273 #define INIT_NONE_SPECIFIC(type) \
1274 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_NONE, \
1275 TYPE_MAIN_TYPE (type)->type_specific = {})
1277 extern const struct gnat_aux_type gnat_aux_default
;
1279 extern void allocate_gnat_aux_type (struct type
*);
1281 #define INIT_GNAT_SPECIFIC(type) \
1282 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
1283 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
1284 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
1285 /* * A macro that returns non-zero if the type-specific data should be
1286 read as "gnat-stuff". */
1287 #define HAVE_GNAT_AUX_INFO(type) \
1288 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
1290 /* * True if TYPE is known to be an Ada type of some kind. */
1291 #define ADA_TYPE_P(type) \
1292 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF \
1293 || (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_NONE \
1294 && TYPE_FIXED_INSTANCE (type)))
1296 #define INIT_FUNC_SPECIFIC(type) \
1297 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1298 TYPE_MAIN_TYPE (type)->type_specific.func_stuff = (struct func_type *) \
1299 TYPE_ZALLOC (type, \
1300 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1302 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1303 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1304 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
1305 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1306 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1307 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1308 #define TYPE_RVALUE_REFERENCE_TYPE(thistype) (thistype)->rvalue_reference_type
1309 #define TYPE_CHAIN(thistype) (thistype)->chain
1310 /* * Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1311 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1312 so you only have to call check_typedef once. Since allocate_value
1313 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1314 #define TYPE_LENGTH(thistype) (thistype)->length
1316 /* * Return the alignment of the type in target addressable memory
1317 units, or 0 if no alignment was specified. */
1318 #define TYPE_RAW_ALIGN(thistype) type_raw_align (thistype)
1320 /* * Return the alignment of the type in target addressable memory
1321 units, or 0 if no alignment was specified. */
1322 extern unsigned type_raw_align (struct type
*);
1324 /* * Return the alignment of the type in target addressable memory
1325 units. Return 0 if the alignment cannot be determined; but note
1326 that this makes an effort to compute the alignment even it it was
1327 not specified in the debug info. */
1328 extern unsigned type_align (struct type
*);
1330 /* * Set the alignment of the type. The alignment must be a power of
1331 2. Returns false if the given value does not fit in the available
1332 space in struct type. */
1333 extern bool set_type_align (struct type
*, ULONGEST
);
1335 /* * Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
1336 type, you need to do TYPE_CODE (check_type (this_type)). */
1337 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
1338 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
1339 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
1341 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1342 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1343 #define TYPE_LOW_BOUND(range_type) \
1344 TYPE_RANGE_DATA(range_type)->low.data.const_val
1345 #define TYPE_HIGH_BOUND(range_type) \
1346 TYPE_RANGE_DATA(range_type)->high.data.const_val
1347 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1348 (TYPE_RANGE_DATA(range_type)->low.kind == PROP_UNDEFINED)
1349 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1350 (TYPE_RANGE_DATA(range_type)->high.kind == PROP_UNDEFINED)
1351 #define TYPE_HIGH_BOUND_KIND(range_type) \
1352 TYPE_RANGE_DATA(range_type)->high.kind
1353 #define TYPE_LOW_BOUND_KIND(range_type) \
1354 TYPE_RANGE_DATA(range_type)->low.kind
1356 /* Property accessors for the type data location. */
1357 #define TYPE_DATA_LOCATION(thistype) \
1358 get_dyn_prop (DYN_PROP_DATA_LOCATION, thistype)
1359 #define TYPE_DATA_LOCATION_BATON(thistype) \
1360 TYPE_DATA_LOCATION (thistype)->data.baton
1361 #define TYPE_DATA_LOCATION_ADDR(thistype) \
1362 TYPE_DATA_LOCATION (thistype)->data.const_val
1363 #define TYPE_DATA_LOCATION_KIND(thistype) \
1364 TYPE_DATA_LOCATION (thistype)->kind
1366 /* Property accessors for the type allocated/associated. */
1367 #define TYPE_ALLOCATED_PROP(thistype) \
1368 get_dyn_prop (DYN_PROP_ALLOCATED, thistype)
1369 #define TYPE_ASSOCIATED_PROP(thistype) \
1370 get_dyn_prop (DYN_PROP_ASSOCIATED, thistype)
1372 /* Attribute accessors for dynamic properties. */
1373 #define TYPE_DYN_PROP_LIST(thistype) \
1374 TYPE_MAIN_TYPE(thistype)->dyn_prop_list
1375 #define TYPE_DYN_PROP_BATON(dynprop) \
1377 #define TYPE_DYN_PROP_ADDR(dynprop) \
1378 dynprop->data.const_val
1379 #define TYPE_DYN_PROP_KIND(dynprop) \
1383 /* Accessors for struct range_bounds data attached to an array type's
1386 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1387 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1388 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1389 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1391 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1392 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1394 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1395 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1399 #define TYPE_SELF_TYPE(thistype) internal_type_self_type (thistype)
1400 /* Do not call this, use TYPE_SELF_TYPE. */
1401 extern struct type
*internal_type_self_type (struct type
*);
1402 extern void set_type_self_type (struct type
*, struct type
*);
1404 extern int internal_type_vptr_fieldno (struct type
*);
1405 extern void set_type_vptr_fieldno (struct type
*, int);
1406 extern struct type
*internal_type_vptr_basetype (struct type
*);
1407 extern void set_type_vptr_basetype (struct type
*, struct type
*);
1408 #define TYPE_VPTR_FIELDNO(thistype) internal_type_vptr_fieldno (thistype)
1409 #define TYPE_VPTR_BASETYPE(thistype) internal_type_vptr_basetype (thistype)
1411 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1412 #define TYPE_SPECIFIC_FIELD(thistype) \
1413 TYPE_MAIN_TYPE(thistype)->type_specific_field
1414 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1415 where we're trying to print an Ada array using the C language.
1416 In that case, there is no "cplus_stuff", but the C language assumes
1417 that there is. What we do, in that case, is pretend that there is
1418 an implicit one which is the default cplus stuff. */
1419 #define TYPE_CPLUS_SPECIFIC(thistype) \
1420 (!HAVE_CPLUS_STRUCT(thistype) \
1421 ? (struct cplus_struct_type*)&cplus_struct_default \
1422 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1423 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1424 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1425 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1426 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1427 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1428 #define TYPE_NO_RETURN(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->is_noreturn
1429 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1430 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1431 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1432 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1433 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1434 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1435 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1436 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1438 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1439 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1440 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1442 #define FIELD_TYPE(thisfld) ((thisfld).type)
1443 #define FIELD_NAME(thisfld) ((thisfld).name)
1444 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1445 #define FIELD_BITPOS_LVAL(thisfld) ((thisfld).loc.bitpos)
1446 #define FIELD_BITPOS(thisfld) (FIELD_BITPOS_LVAL (thisfld) + 0)
1447 #define FIELD_ENUMVAL_LVAL(thisfld) ((thisfld).loc.enumval)
1448 #define FIELD_ENUMVAL(thisfld) (FIELD_ENUMVAL_LVAL (thisfld) + 0)
1449 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1450 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1451 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1452 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1453 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1454 FIELD_BITPOS_LVAL (thisfld) = (bitpos))
1455 #define SET_FIELD_ENUMVAL(thisfld, enumval) \
1456 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_ENUMVAL, \
1457 FIELD_ENUMVAL_LVAL (thisfld) = (enumval))
1458 #define SET_FIELD_PHYSNAME(thisfld, name) \
1459 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1460 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1461 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1462 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1463 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1464 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1465 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1466 FIELD_DWARF_BLOCK (thisfld) = (addr))
1467 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1468 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1470 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1471 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1472 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1473 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1474 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1475 #define TYPE_FIELD_ENUMVAL(thistype, n) FIELD_ENUMVAL (TYPE_FIELD (thistype, n))
1476 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1477 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1478 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1479 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1480 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1481 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1483 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1484 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1485 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1486 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1487 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1488 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1489 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1490 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1491 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1492 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1493 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1494 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1495 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1496 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1497 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1498 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1499 #define TYPE_FIELD_PRIVATE(thistype, n) \
1500 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1501 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1502 #define TYPE_FIELD_PROTECTED(thistype, n) \
1503 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1504 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1505 #define TYPE_FIELD_IGNORE(thistype, n) \
1506 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1507 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1508 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1509 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1510 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1512 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1513 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1514 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1515 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1516 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1518 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1519 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1520 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1521 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1522 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1523 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1525 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1526 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1527 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1528 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1529 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1530 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1531 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1532 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1533 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1534 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1535 #define TYPE_FN_FIELD_CONSTRUCTOR(thisfn, n) ((thisfn)[n].is_constructor)
1536 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1537 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1538 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1539 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1541 /* Accessors for typedefs defined by a class. */
1542 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1543 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1544 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1545 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1546 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1547 TYPE_TYPEDEF_FIELD (thistype, n).name
1548 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1549 TYPE_TYPEDEF_FIELD (thistype, n).type
1550 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1551 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1552 #define TYPE_TYPEDEF_FIELD_PROTECTED(thistype, n) \
1553 TYPE_TYPEDEF_FIELD (thistype, n).is_protected
1554 #define TYPE_TYPEDEF_FIELD_PRIVATE(thistype, n) \
1555 TYPE_TYPEDEF_FIELD (thistype, n).is_private
1557 #define TYPE_NESTED_TYPES_ARRAY(thistype) \
1558 TYPE_CPLUS_SPECIFIC (thistype)->nested_types
1559 #define TYPE_NESTED_TYPES_FIELD(thistype, n) \
1560 TYPE_CPLUS_SPECIFIC (thistype)->nested_types[n]
1561 #define TYPE_NESTED_TYPES_FIELD_NAME(thistype, n) \
1562 TYPE_NESTED_TYPES_FIELD (thistype, n).name
1563 #define TYPE_NESTED_TYPES_FIELD_TYPE(thistype, n) \
1564 TYPE_NESTED_TYPES_FIELD (thistype, n).type
1565 #define TYPE_NESTED_TYPES_COUNT(thistype) \
1566 TYPE_CPLUS_SPECIFIC (thistype)->nested_types_count
1567 #define TYPE_NESTED_TYPES_FIELD_PROTECTED(thistype, n) \
1568 TYPE_NESTED_TYPES_FIELD (thistype, n).is_protected
1569 #define TYPE_NESTED_TYPES_FIELD_PRIVATE(thistype, n) \
1570 TYPE_NESTED_TYPES_FIELD (thistype, n).is_private
1572 #define TYPE_IS_OPAQUE(thistype) \
1573 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1574 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1575 && (TYPE_NFIELDS (thistype) == 0) \
1576 && (!HAVE_CPLUS_STRUCT (thistype) \
1577 || TYPE_NFN_FIELDS (thistype) == 0) \
1578 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1580 /* * A helper macro that returns the name of a type or "unnamed type"
1581 if the type has no name. */
1583 #define TYPE_SAFE_NAME(type) \
1584 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>"))
1586 /* * A helper macro that returns the name of an error type. If the
1587 type has a name, it is used; otherwise, a default is used. */
1589 #define TYPE_ERROR_NAME(type) \
1590 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1592 /* Given TYPE, return its floatformat. */
1593 const struct floatformat
*floatformat_from_type (const struct type
*type
);
1597 /* Integral types. */
1599 /* Implicit size/sign (based on the architecture's ABI). */
1600 struct type
*builtin_void
;
1601 struct type
*builtin_char
;
1602 struct type
*builtin_short
;
1603 struct type
*builtin_int
;
1604 struct type
*builtin_long
;
1605 struct type
*builtin_signed_char
;
1606 struct type
*builtin_unsigned_char
;
1607 struct type
*builtin_unsigned_short
;
1608 struct type
*builtin_unsigned_int
;
1609 struct type
*builtin_unsigned_long
;
1610 struct type
*builtin_half
;
1611 struct type
*builtin_float
;
1612 struct type
*builtin_double
;
1613 struct type
*builtin_long_double
;
1614 struct type
*builtin_complex
;
1615 struct type
*builtin_double_complex
;
1616 struct type
*builtin_string
;
1617 struct type
*builtin_bool
;
1618 struct type
*builtin_long_long
;
1619 struct type
*builtin_unsigned_long_long
;
1620 struct type
*builtin_decfloat
;
1621 struct type
*builtin_decdouble
;
1622 struct type
*builtin_declong
;
1624 /* "True" character types.
1625 We use these for the '/c' print format, because c_char is just a
1626 one-byte integral type, which languages less laid back than C
1627 will print as ... well, a one-byte integral type. */
1628 struct type
*builtin_true_char
;
1629 struct type
*builtin_true_unsigned_char
;
1631 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1632 is for when an architecture needs to describe a register that has
1634 struct type
*builtin_int0
;
1635 struct type
*builtin_int8
;
1636 struct type
*builtin_uint8
;
1637 struct type
*builtin_int16
;
1638 struct type
*builtin_uint16
;
1639 struct type
*builtin_int24
;
1640 struct type
*builtin_uint24
;
1641 struct type
*builtin_int32
;
1642 struct type
*builtin_uint32
;
1643 struct type
*builtin_int64
;
1644 struct type
*builtin_uint64
;
1645 struct type
*builtin_int128
;
1646 struct type
*builtin_uint128
;
1648 /* Wide character types. */
1649 struct type
*builtin_char16
;
1650 struct type
*builtin_char32
;
1651 struct type
*builtin_wchar
;
1653 /* Pointer types. */
1655 /* * `pointer to data' type. Some target platforms use an implicitly
1656 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1657 struct type
*builtin_data_ptr
;
1659 /* * `pointer to function (returning void)' type. Harvard
1660 architectures mean that ABI function and code pointers are not
1661 interconvertible. Similarly, since ANSI, C standards have
1662 explicitly said that pointers to functions and pointers to data
1663 are not interconvertible --- that is, you can't cast a function
1664 pointer to void * and back, and expect to get the same value.
1665 However, all function pointer types are interconvertible, so void
1666 (*) () can server as a generic function pointer. */
1668 struct type
*builtin_func_ptr
;
1670 /* * `function returning pointer to function (returning void)' type.
1671 The final void return type is not significant for it. */
1673 struct type
*builtin_func_func
;
1675 /* Special-purpose types. */
1677 /* * This type is used to represent a GDB internal function. */
1679 struct type
*internal_fn
;
1681 /* * This type is used to represent an xmethod. */
1682 struct type
*xmethod
;
1685 /* * Return the type table for the specified architecture. */
1687 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1689 /* * Per-objfile types used by symbol readers. */
1693 /* Basic types based on the objfile architecture. */
1694 struct type
*builtin_void
;
1695 struct type
*builtin_char
;
1696 struct type
*builtin_short
;
1697 struct type
*builtin_int
;
1698 struct type
*builtin_long
;
1699 struct type
*builtin_long_long
;
1700 struct type
*builtin_signed_char
;
1701 struct type
*builtin_unsigned_char
;
1702 struct type
*builtin_unsigned_short
;
1703 struct type
*builtin_unsigned_int
;
1704 struct type
*builtin_unsigned_long
;
1705 struct type
*builtin_unsigned_long_long
;
1706 struct type
*builtin_half
;
1707 struct type
*builtin_float
;
1708 struct type
*builtin_double
;
1709 struct type
*builtin_long_double
;
1711 /* * This type is used to represent symbol addresses. */
1712 struct type
*builtin_core_addr
;
1714 /* * This type represents a type that was unrecognized in symbol
1716 struct type
*builtin_error
;
1718 /* * Types used for symbols with no debug information. */
1719 struct type
*nodebug_text_symbol
;
1720 struct type
*nodebug_text_gnu_ifunc_symbol
;
1721 struct type
*nodebug_got_plt_symbol
;
1722 struct type
*nodebug_data_symbol
;
1723 struct type
*nodebug_unknown_symbol
;
1724 struct type
*nodebug_tls_symbol
;
1727 /* * Return the type table for the specified objfile. */
1729 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1731 /* Explicit floating-point formats. See "floatformat.h". */
1732 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1733 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1734 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1735 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1736 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1737 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1738 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1739 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1740 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1741 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1742 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1743 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1746 /* Allocate space for storing data associated with a particular
1747 type. We ensure that the space is allocated using the same
1748 mechanism that was used to allocate the space for the type
1749 structure itself. I.e. if the type is on an objfile's
1750 objfile_obstack, then the space for data associated with that type
1751 will also be allocated on the objfile_obstack. If the type is
1752 associated with a gdbarch, then the space for data associated with that
1753 type will also be allocated on the gdbarch_obstack.
1755 If a type is not associated with neither an objfile or a gdbarch then
1756 you should not use this macro to allocate space for data, instead you
1757 should call xmalloc directly, and ensure the memory is correctly freed
1758 when it is no longer needed. */
1760 #define TYPE_ALLOC(t,size) \
1761 (obstack_alloc ((TYPE_OBJFILE_OWNED (t) \
1762 ? &TYPE_OBJFILE (t)->objfile_obstack \
1763 : gdbarch_obstack (TYPE_OWNER (t).gdbarch)), \
1767 /* See comment on TYPE_ALLOC. */
1769 #define TYPE_ZALLOC(t,size) (memset (TYPE_ALLOC (t, size), 0, size))
1771 /* Use alloc_type to allocate a type owned by an objfile. Use
1772 alloc_type_arch to allocate a type owned by an architecture. Use
1773 alloc_type_copy to allocate a type with the same owner as a
1774 pre-existing template type, no matter whether objfile or
1776 extern struct type
*alloc_type (struct objfile
*);
1777 extern struct type
*alloc_type_arch (struct gdbarch
*);
1778 extern struct type
*alloc_type_copy (const struct type
*);
1780 /* * Return the type's architecture. For types owned by an
1781 architecture, that architecture is returned. For types owned by an
1782 objfile, that objfile's architecture is returned. */
1784 extern struct gdbarch
*get_type_arch (const struct type
*);
1786 /* * This returns the target type (or NULL) of TYPE, also skipping
1789 extern struct type
*get_target_type (struct type
*type
);
1791 /* Return the equivalent of TYPE_LENGTH, but in number of target
1792 addressable memory units of the associated gdbarch instead of bytes. */
1794 extern unsigned int type_length_units (struct type
*type
);
1796 /* * Helper function to construct objfile-owned types. */
1798 extern struct type
*init_type (struct objfile
*, enum type_code
, int,
1800 extern struct type
*init_integer_type (struct objfile
*, int, int,
1802 extern struct type
*init_character_type (struct objfile
*, int, int,
1804 extern struct type
*init_boolean_type (struct objfile
*, int, int,
1806 extern struct type
*init_float_type (struct objfile
*, int, const char *,
1807 const struct floatformat
**);
1808 extern struct type
*init_decfloat_type (struct objfile
*, int, const char *);
1809 extern struct type
*init_complex_type (struct objfile
*, const char *,
1811 extern struct type
*init_pointer_type (struct objfile
*, int, const char *,
1814 /* Helper functions to construct architecture-owned types. */
1815 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int,
1817 extern struct type
*arch_integer_type (struct gdbarch
*, int, int,
1819 extern struct type
*arch_character_type (struct gdbarch
*, int, int,
1821 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int,
1823 extern struct type
*arch_float_type (struct gdbarch
*, int, const char *,
1824 const struct floatformat
**);
1825 extern struct type
*arch_decfloat_type (struct gdbarch
*, int, const char *);
1826 extern struct type
*arch_complex_type (struct gdbarch
*, const char *,
1828 extern struct type
*arch_pointer_type (struct gdbarch
*, int, const char *,
1831 /* Helper functions to construct a struct or record type. An
1832 initially empty type is created using arch_composite_type().
1833 Fields are then added using append_composite_type_field*(). A union
1834 type has its size set to the largest field. A struct type has each
1835 field packed against the previous. */
1837 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1838 const char *name
, enum type_code code
);
1839 extern void append_composite_type_field (struct type
*t
, const char *name
,
1840 struct type
*field
);
1841 extern void append_composite_type_field_aligned (struct type
*t
,
1845 struct field
*append_composite_type_field_raw (struct type
*t
, const char *name
,
1846 struct type
*field
);
1848 /* Helper functions to construct a bit flags type. An initially empty
1849 type is created using arch_flag_type(). Flags are then added using
1850 append_flag_type_field() and append_flag_type_flag(). */
1851 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1852 const char *name
, int bit
);
1853 extern void append_flags_type_field (struct type
*type
,
1854 int start_bitpos
, int nr_bits
,
1855 struct type
*field_type
, const char *name
);
1856 extern void append_flags_type_flag (struct type
*type
, int bitpos
,
1859 extern void make_vector_type (struct type
*array_type
);
1860 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
1862 extern struct type
*lookup_reference_type (struct type
*, enum type_code
);
1863 extern struct type
*lookup_lvalue_reference_type (struct type
*);
1864 extern struct type
*lookup_rvalue_reference_type (struct type
*);
1867 extern struct type
*make_reference_type (struct type
*, struct type
**,
1870 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
1872 extern struct type
*make_restrict_type (struct type
*);
1874 extern struct type
*make_unqualified_type (struct type
*);
1876 extern struct type
*make_atomic_type (struct type
*);
1878 extern void replace_type (struct type
*, struct type
*);
1880 extern int address_space_name_to_int (struct gdbarch
*, const char *);
1882 extern const char *address_space_int_to_name (struct gdbarch
*, int);
1884 extern struct type
*make_type_with_address_space (struct type
*type
,
1885 int space_identifier
);
1887 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
1889 extern struct type
*lookup_methodptr_type (struct type
*);
1891 extern void smash_to_method_type (struct type
*type
, struct type
*self_type
,
1892 struct type
*to_type
, struct field
*args
,
1893 int nargs
, int varargs
);
1895 extern void smash_to_memberptr_type (struct type
*, struct type
*,
1898 extern void smash_to_methodptr_type (struct type
*, struct type
*);
1900 extern struct type
*allocate_stub_method (struct type
*);
1902 extern const char *type_name_or_error (struct type
*type
);
1906 /* The field of the element, or NULL if no element was found. */
1907 struct field
*field
;
1909 /* The bit offset of the element in the parent structure. */
1913 /* Given a type TYPE, lookup the field and offset of the component named
1916 TYPE can be either a struct or union, or a pointer or reference to
1917 a struct or union. If it is a pointer or reference, its target
1918 type is automatically used. Thus '.' and '->' are interchangable,
1919 as specified for the definitions of the expression element types
1920 STRUCTOP_STRUCT and STRUCTOP_PTR.
1922 If NOERR is nonzero, the returned structure will have field set to
1923 NULL if there is no component named NAME.
1925 If the component NAME is a field in an anonymous substructure of
1926 TYPE, the returned offset is a "global" offset relative to TYPE
1927 rather than an offset within the substructure. */
1929 extern struct_elt
lookup_struct_elt (struct type
*, const char *, int);
1931 /* Given a type TYPE, lookup the type of the component named NAME.
1933 TYPE can be either a struct or union, or a pointer or reference to
1934 a struct or union. If it is a pointer or reference, its target
1935 type is automatically used. Thus '.' and '->' are interchangable,
1936 as specified for the definitions of the expression element types
1937 STRUCTOP_STRUCT and STRUCTOP_PTR.
1939 If NOERR is nonzero, return NULL if there is no component named
1942 extern struct type
*lookup_struct_elt_type (struct type
*, const char *, int);
1944 extern struct type
*make_pointer_type (struct type
*, struct type
**);
1946 extern struct type
*lookup_pointer_type (struct type
*);
1948 extern struct type
*make_function_type (struct type
*, struct type
**);
1950 extern struct type
*lookup_function_type (struct type
*);
1952 extern struct type
*lookup_function_type_with_arguments (struct type
*,
1956 extern struct type
*create_static_range_type (struct type
*, struct type
*,
1960 extern struct type
*create_array_type_with_stride
1961 (struct type
*, struct type
*, struct type
*,
1962 struct dynamic_prop
*, unsigned int);
1964 extern struct type
*create_range_type (struct type
*, struct type
*,
1965 const struct dynamic_prop
*,
1966 const struct dynamic_prop
*,
1969 extern struct type
*create_array_type (struct type
*, struct type
*,
1972 extern struct type
*lookup_array_range_type (struct type
*, LONGEST
, LONGEST
);
1974 extern struct type
*create_string_type (struct type
*, struct type
*,
1976 extern struct type
*lookup_string_range_type (struct type
*, LONGEST
, LONGEST
);
1978 extern struct type
*create_set_type (struct type
*, struct type
*);
1980 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
1981 struct gdbarch
*, const char *);
1983 extern struct type
*lookup_signed_typename (const struct language_defn
*,
1984 struct gdbarch
*, const char *);
1986 extern void get_unsigned_type_max (struct type
*, ULONGEST
*);
1988 extern void get_signed_type_minmax (struct type
*, LONGEST
*, LONGEST
*);
1990 /* * Resolve all dynamic values of a type e.g. array bounds to static values.
1991 ADDR specifies the location of the variable the type is bound to.
1992 If TYPE has no dynamic properties return TYPE; otherwise a new type with
1993 static properties is returned. */
1994 extern struct type
*resolve_dynamic_type (struct type
*type
,
1995 const gdb_byte
*valaddr
,
1998 /* * Predicate if the type has dynamic values, which are not resolved yet. */
1999 extern int is_dynamic_type (struct type
*type
);
2001 /* * Return the dynamic property of the requested KIND from TYPE's
2002 list of dynamic properties. */
2003 extern struct dynamic_prop
*get_dyn_prop
2004 (enum dynamic_prop_node_kind kind
, const struct type
*type
);
2006 /* * Given a dynamic property PROP of a given KIND, add this dynamic
2007 property to the given TYPE.
2009 This function assumes that TYPE is objfile-owned. */
2010 extern void add_dyn_prop
2011 (enum dynamic_prop_node_kind kind
, struct dynamic_prop prop
,
2014 extern void remove_dyn_prop (enum dynamic_prop_node_kind prop_kind
,
2017 extern struct type
*check_typedef (struct type
*);
2019 extern void check_stub_method_group (struct type
*, int);
2021 extern char *gdb_mangle_name (struct type
*, int, int);
2023 extern struct type
*lookup_typename (const struct language_defn
*,
2024 struct gdbarch
*, const char *,
2025 const struct block
*, int);
2027 extern struct type
*lookup_template_type (const char *, struct type
*,
2028 const struct block
*);
2030 extern int get_vptr_fieldno (struct type
*, struct type
**);
2032 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
2034 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
2035 LONGEST
*high_bound
);
2037 extern int discrete_position (struct type
*type
, LONGEST val
, LONGEST
*pos
);
2039 extern int class_types_same_p (const struct type
*, const struct type
*);
2041 extern int is_ancestor (struct type
*, struct type
*);
2043 extern int is_public_ancestor (struct type
*, struct type
*);
2045 extern int is_unique_ancestor (struct type
*, struct value
*);
2047 /* Overload resolution */
2049 /* * Badness if parameter list length doesn't match arg list length. */
2050 extern const struct rank LENGTH_MISMATCH_BADNESS
;
2052 /* * Dummy badness value for nonexistent parameter positions. */
2053 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
2054 /* * Badness if no conversion among types. */
2055 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
2057 /* * Badness of an exact match. */
2058 extern const struct rank EXACT_MATCH_BADNESS
;
2060 /* * Badness of integral promotion. */
2061 extern const struct rank INTEGER_PROMOTION_BADNESS
;
2062 /* * Badness of floating promotion. */
2063 extern const struct rank FLOAT_PROMOTION_BADNESS
;
2064 /* * Badness of converting a derived class pointer
2065 to a base class pointer. */
2066 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
2067 /* * Badness of integral conversion. */
2068 extern const struct rank INTEGER_CONVERSION_BADNESS
;
2069 /* * Badness of floating conversion. */
2070 extern const struct rank FLOAT_CONVERSION_BADNESS
;
2071 /* * Badness of integer<->floating conversions. */
2072 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
2073 /* * Badness of conversion of pointer to void pointer. */
2074 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
2075 /* * Badness of conversion to boolean. */
2076 extern const struct rank BOOL_CONVERSION_BADNESS
;
2077 /* * Badness of converting derived to base class. */
2078 extern const struct rank BASE_CONVERSION_BADNESS
;
2079 /* * Badness of converting from non-reference to reference. Subrank
2080 is the type of reference conversion being done. */
2081 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
2082 /* * Conversion to rvalue reference. */
2083 #define REFERENCE_CONVERSION_RVALUE 1
2084 /* * Conversion to const lvalue reference. */
2085 #define REFERENCE_CONVERSION_CONST_LVALUE 2
2087 /* * Badness of converting integer 0 to NULL pointer. */
2088 extern const struct rank NULL_POINTER_CONVERSION
;
2089 /* * Badness of cv-conversion. Subrank is a flag describing the conversions
2091 extern const struct rank CV_CONVERSION_BADNESS
;
2092 #define CV_CONVERSION_CONST 1
2093 #define CV_CONVERSION_VOLATILE 2
2095 /* Non-standard conversions allowed by the debugger */
2097 /* * Converting a pointer to an int is usually OK. */
2098 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
2100 /* * Badness of converting a (non-zero) integer constant
2102 extern const struct rank NS_INTEGER_POINTER_CONVERSION_BADNESS
;
2104 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
2105 extern int compare_ranks (struct rank a
, struct rank b
);
2107 extern int compare_badness (const badness_vector
&,
2108 const badness_vector
&);
2110 extern badness_vector
rank_function (gdb::array_view
<type
*> parms
,
2111 gdb::array_view
<value
*> args
);
2113 extern struct rank
rank_one_type (struct type
*, struct type
*,
2116 extern void recursive_dump_type (struct type
*, int);
2118 extern int field_is_static (struct field
*);
2122 extern void print_scalar_formatted (const gdb_byte
*, struct type
*,
2123 const struct value_print_options
*,
2124 int, struct ui_file
*);
2126 extern int can_dereference (struct type
*);
2128 extern int is_integral_type (struct type
*);
2130 extern int is_floating_type (struct type
*);
2132 extern int is_scalar_type (struct type
*type
);
2134 extern int is_scalar_type_recursive (struct type
*);
2136 extern int class_or_union_p (const struct type
*);
2138 extern void maintenance_print_type (const char *, int);
2140 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
2142 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
2144 htab_t copied_types
);
2146 extern struct type
*copy_type (const struct type
*type
);
2148 extern bool types_equal (struct type
*, struct type
*);
2150 extern bool types_deeply_equal (struct type
*, struct type
*);
2152 extern int type_not_allocated (const struct type
*type
);
2154 extern int type_not_associated (const struct type
*type
);
2156 /* * When the type includes explicit byte ordering, return that.
2157 Otherwise, the byte ordering from gdbarch_byte_order for
2158 get_type_arch is returned. */
2160 extern enum bfd_endian
type_byte_order (const struct type
*type
);
2162 /* A flag to enable printing of debugging information of C++
2165 extern unsigned int overload_debug
;
2167 #endif /* GDBTYPES_H */