1 /* Internal type definitions for GDB.
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
4 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010
5 Free Software Foundation, Inc.
7 Contributed by Cygnus Support, using pieces from other GDB modules.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #if !defined (GDBTYPES_H)
29 /* Forward declarations for prototypes. */
32 struct value_print_options
;
35 /* Some macros for char-based bitfields. */
37 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
38 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
39 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
40 #define B_TYPE unsigned char
41 #define B_BYTES(x) ( 1 + ((x)>>3) )
42 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
44 /* Different kinds of data types are distinguished by the `code' field. */
48 TYPE_CODE_UNDEF
, /* Not used; catches errors */
49 TYPE_CODE_PTR
, /* Pointer type */
51 /* Array type with lower & upper bounds.
53 Regardless of the language, GDB represents multidimensional
54 array types the way C does: as arrays of arrays. So an
55 instance of a GDB array type T can always be seen as a series
56 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
59 Row-major languages like C lay out multi-dimensional arrays so
60 that incrementing the rightmost index in a subscripting
61 expression results in the smallest change in the address of the
62 element referred to. Column-major languages like Fortran lay
63 them out so that incrementing the leftmost index results in the
66 This means that, in column-major languages, working our way
67 from type to target type corresponds to working through indices
68 from right to left, not left to right. */
71 TYPE_CODE_STRUCT
, /* C struct or Pascal record */
72 TYPE_CODE_UNION
, /* C union or Pascal variant part */
73 TYPE_CODE_ENUM
, /* Enumeration type */
74 TYPE_CODE_FLAGS
, /* Bit flags type */
75 TYPE_CODE_FUNC
, /* Function type */
76 TYPE_CODE_INT
, /* Integer type */
78 /* Floating type. This is *NOT* a complex type. Beware, there are parts
79 of GDB which bogusly assume that TYPE_CODE_FLT can mean complex. */
82 /* Void type. The length field specifies the length (probably always
83 one) which is used in pointer arithmetic involving pointers to
84 this type, but actually dereferencing such a pointer is invalid;
85 a void type has no length and no actual representation in memory
86 or registers. A pointer to a void type is a generic pointer. */
89 TYPE_CODE_SET
, /* Pascal sets */
90 TYPE_CODE_RANGE
, /* Range (integers within spec'd bounds) */
92 /* A string type which is like an array of character but prints
93 differently (at least for (the deleted) CHILL). It does not
94 contain a length field as Pascal strings (for many Pascals,
95 anyway) do; if we want to deal with such strings, we should use
99 /* String of bits; like TYPE_CODE_SET but prints differently (at
100 least for (the deleted) CHILL). */
103 /* Unknown type. The length field is valid if we were able to
104 deduce that much about the type, or 0 if we don't even know that. */
108 TYPE_CODE_METHOD
, /* Method type */
110 /* Pointer-to-member-function type. This describes how to access a
111 particular member function of a class (possibly a virtual
112 member function). The representation may vary between different
116 /* Pointer-to-member type. This is the offset within a class to some
117 particular data member. The only currently supported representation
118 uses an unbiased offset, with -1 representing NULL; this is used
119 by the Itanium C++ ABI (used by GCC on all platforms). */
122 TYPE_CODE_REF
, /* C++ Reference types */
124 TYPE_CODE_CHAR
, /* *real* character type */
126 /* Boolean type. 0 is false, 1 is true, and other values are non-boolean
127 (e.g. FORTRAN "logical" used as unsigned int). */
131 TYPE_CODE_COMPLEX
, /* Complex float */
135 TYPE_CODE_NAMESPACE
, /* C++ namespace. */
137 TYPE_CODE_DECFLOAT
, /* Decimal floating point. */
139 TYPE_CODE_MODULE
, /* Fortran module. */
141 /* Internal function type. */
142 TYPE_CODE_INTERNAL_FUNCTION
145 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
146 alias for TYPE_CODE_STRUCT. This is for DWARF, which has a distinct
147 "class" attribute. Perhaps we should actually have a separate TYPE_CODE
148 so that we can print "class" or "struct" depending on what the debug
149 info said. It's not clear we should bother. */
151 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
153 /* Some constants representing each bit field in the main_type. See
154 the bit-field-specific macros, below, for documentation of each
155 constant in this enum. These enum values are only used with
156 init_type. Note that the values are chosen not to conflict with
157 type_instance_flag_value; this lets init_type error-check its
162 TYPE_FLAG_UNSIGNED
= (1 << 6),
163 TYPE_FLAG_NOSIGN
= (1 << 7),
164 TYPE_FLAG_STUB
= (1 << 8),
165 TYPE_FLAG_TARGET_STUB
= (1 << 9),
166 TYPE_FLAG_STATIC
= (1 << 10),
167 TYPE_FLAG_PROTOTYPED
= (1 << 11),
168 TYPE_FLAG_INCOMPLETE
= (1 << 12),
169 TYPE_FLAG_VARARGS
= (1 << 13),
170 TYPE_FLAG_VECTOR
= (1 << 14),
171 TYPE_FLAG_FIXED_INSTANCE
= (1 << 15),
172 TYPE_FLAG_STUB_SUPPORTED
= (1 << 16),
173 TYPE_FLAG_NOTTEXT
= (1 << 17),
175 /* Used for error-checking. */
176 TYPE_FLAG_MIN
= TYPE_FLAG_UNSIGNED
179 /* Some bits for the type's instance_flags word. See the macros below
180 for documentation on each bit. Note that if you add a value here,
181 you must update the enum type_flag_value as well. */
182 enum type_instance_flag_value
184 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
185 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
186 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
187 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
188 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
189 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5)
192 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT, the
193 type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */
195 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
197 /* No sign for this type. In C++, "char", "signed char", and "unsigned
198 char" are distinct types; so we need an extra flag to indicate the
199 absence of a sign! */
201 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
203 /* This appears in a type's flags word if it is a stub type (e.g., if
204 someone referenced a type that wasn't defined in a source file
205 via (struct sir_not_appearing_in_this_film *)). */
207 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
209 /* The target type of this type is a stub type, and this type needs to
210 be updated if it gets un-stubbed in check_typedef.
211 Used for arrays and ranges, in which TYPE_LENGTH of the array/range
212 gets set based on the TYPE_LENGTH of the target type.
213 Also, set for TYPE_CODE_TYPEDEF. */
215 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
217 /* Static type. If this is set, the corresponding type had
219 * Note: This may be unnecessary, since static data members
220 * are indicated by other means (bitpos == -1)
223 #define TYPE_STATIC(t) (TYPE_MAIN_TYPE (t)->flag_static)
225 /* This is a function type which appears to have a prototype. We need this
226 for function calls in order to tell us if it's necessary to coerce the args,
227 or to just do the standard conversions. This is used with a short field. */
229 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
231 /* This flag is used to indicate that processing for this type
234 (Mostly intended for HP platforms, where class methods, for
235 instance, can be encountered before their classes in the debug
236 info; the incomplete type has to be marked so that the class and
237 the method can be assigned correct types.) */
239 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
241 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
244 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
246 /* Identify a vector type. Gcc is handling this by adding an extra
247 attribute to the array type. We slurp that in as a new flag of a
248 type. This is used only in dwarf2read.c. */
249 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
251 /* The debugging formats (especially STABS) do not contain enough information
252 to represent all Ada types---especially those whose size depends on
253 dynamic quantities. Therefore, the GNAT Ada compiler includes
254 extra information in the form of additional type definitions
255 connected by naming conventions. This flag indicates that the
256 type is an ordinary (unencoded) GDB type that has been created from
257 the necessary run-time information, and does not need further
258 interpretation. Optionally marks ordinary, fixed-size GDB type. */
260 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
262 /* This debug target supports TYPE_STUB(t). In the unsupported case we have to
263 rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE ().
264 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only guessed
265 the TYPE_STUB(t) value (see dwarfread.c). */
267 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
269 /* Not textual. By default, GDB treats all single byte integers as
270 characters (or elements of strings) unless this flag is set. */
272 #define TYPE_NOTTEXT(t) (TYPE_MAIN_TYPE (t)->flag_nottext)
274 /* Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
275 the objfile retrieved as TYPE_OBJFILE. Otherweise, the type is
276 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
278 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
279 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
280 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
282 /* True if this type was declared using the "class" keyword. This is
283 only valid for C++ structure types, and only used for displaying
284 the type. If false, the structure was declared as a "struct". */
286 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
288 /* Constant type. If this is set, the corresponding type has a
292 #define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST)
294 /* Volatile type. If this is set, the corresponding type has a
298 #define TYPE_VOLATILE(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE)
300 /* Instruction-space delimited type. This is for Harvard architectures
301 which have separate instruction and data address spaces (and perhaps
304 GDB usually defines a flat address space that is a superset of the
305 architecture's two (or more) address spaces, but this is an extension
306 of the architecture's model.
308 If TYPE_FLAG_INST is set, an object of the corresponding type
309 resides in instruction memory, even if its address (in the extended
310 flat address space) does not reflect this.
312 Similarly, if TYPE_FLAG_DATA is set, then an object of the
313 corresponding type resides in the data memory space, even if
314 this is not indicated by its (flat address space) address.
316 If neither flag is set, the default space for functions / methods
317 is instruction space, and for data objects is data memory. */
319 #define TYPE_CODE_SPACE(t) \
320 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE)
322 #define TYPE_DATA_SPACE(t) \
323 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE)
325 /* Address class flags. Some environments provide for pointers whose
326 size is different from that of a normal pointer or address types
327 where the bits are interpreted differently than normal addresses. The
328 TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific
329 ways to represent these different types of address classes. */
330 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
331 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
332 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
333 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
334 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
335 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
336 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
337 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
339 /* Determine which field of the union main_type.fields[x].loc is used. */
343 FIELD_LOC_KIND_BITPOS
, /* bitpos */
344 FIELD_LOC_KIND_PHYSADDR
, /* physaddr */
345 FIELD_LOC_KIND_PHYSNAME
, /* physname */
346 FIELD_LOC_KIND_DWARF_BLOCK
/* dwarf_block */
349 /* A discriminant to determine which field in the main_type.type_specific
350 union is being used, if any.
352 For types such as TYPE_CODE_FLT or TYPE_CODE_FUNC, the use of this
353 discriminant is really redundant, as we know from the type code
354 which field is going to be used. As such, it would be possible to
355 reduce the size of this enum in order to save a bit or two for
356 other fields of struct main_type. But, since we still have extra
357 room , and for the sake of clarity and consistency, we treat all fields
358 of the union the same way. */
360 enum type_specific_kind
363 TYPE_SPECIFIC_CPLUS_STUFF
,
364 TYPE_SPECIFIC_GNAT_STUFF
,
365 TYPE_SPECIFIC_FLOATFORMAT
,
366 TYPE_SPECIFIC_CALLING_CONVENTION
369 /* This structure is space-critical.
370 Its layout has been tweaked to reduce the space used. */
374 /* Code for kind of type */
376 ENUM_BITFIELD(type_code
) code
: 8;
378 /* Flags about this type. These fields appear at this location
379 because they packs nicely here. See the TYPE_* macros for
380 documentation about these fields. */
382 unsigned int flag_unsigned
: 1;
383 unsigned int flag_nosign
: 1;
384 unsigned int flag_stub
: 1;
385 unsigned int flag_target_stub
: 1;
386 unsigned int flag_static
: 1;
387 unsigned int flag_prototyped
: 1;
388 unsigned int flag_incomplete
: 1;
389 unsigned int flag_varargs
: 1;
390 unsigned int flag_vector
: 1;
391 unsigned int flag_stub_supported
: 1;
392 unsigned int flag_nottext
: 1;
393 unsigned int flag_fixed_instance
: 1;
394 unsigned int flag_objfile_owned
: 1;
395 /* True if this type was declared with "class" rather than
397 unsigned int flag_declared_class
: 1;
399 /* A discriminant telling us which field of the type_specific union
400 is being used for this type, if any. */
401 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
403 /* Number of fields described for this type. This field appears at
404 this location because it packs nicely here. */
408 /* Field number of the virtual function table pointer in
409 VPTR_BASETYPE. If -1, we were unable to find the virtual
410 function table pointer in initial symbol reading, and
411 get_vptr_fieldno should be called to find it if possible.
412 get_vptr_fieldno will update this field if possible.
413 Otherwise the value is left at -1.
415 Unused if this type does not have virtual functions.
417 This field appears at this location because it packs nicely here. */
421 /* Name of this type, or NULL if none.
423 This is used for printing only, except by poorly designed C++ code.
424 For looking up a name, look for a symbol in the VAR_DOMAIN. */
428 /* Tag name for this type, or NULL if none. This means that the
429 name of the type consists of a keyword followed by the tag name.
430 Which keyword is determined by the type code ("struct" for
431 TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages
434 This is used for printing only, except by poorly designed C++ code.
435 For looking up a name, look for a symbol in the STRUCT_DOMAIN.
436 One more legitimate use is that if TYPE_FLAG_STUB is set, this is
437 the name to use to look for definitions in other files. */
441 /* Every type is now associated with a particular objfile, and the
442 type is allocated on the objfile_obstack for that objfile. One problem
443 however, is that there are times when gdb allocates new types while
444 it is not in the process of reading symbols from a particular objfile.
445 Fortunately, these happen when the type being created is a derived
446 type of an existing type, such as in lookup_pointer_type(). So
447 we can just allocate the new type using the same objfile as the
448 existing type, but to do this we need a backpointer to the objfile
449 from the existing type. Yes this is somewhat ugly, but without
450 major overhaul of the internal type system, it can't be avoided
455 struct objfile
*objfile
;
456 struct gdbarch
*gdbarch
;
459 /* For a pointer type, describes the type of object pointed to.
460 For an array type, describes the type of the elements.
461 For a function or method type, describes the type of the return value.
462 For a range type, describes the type of the full range.
463 For a complex type, describes the type of each coordinate.
464 For a special record or union type encoding a dynamic-sized type
465 in GNAT, a memoized pointer to a corresponding static version of
469 struct type
*target_type
;
471 /* For structure and union types, a description of each field.
472 For set and pascal array types, there is one "field",
473 whose type is the domain type of the set or array.
474 For range types, there are two "fields",
475 the minimum and maximum values (both inclusive).
476 For enum types, each possible value is described by one "field".
477 For a function or method type, a "field" for each parameter.
478 For C++ classes, there is one field for each base class (if it is
479 a derived class) plus one field for each class data member. Member
480 functions are recorded elsewhere.
482 Using a pointer to a separate array of fields
483 allows all types to have the same size, which is useful
484 because we can allocate the space for a type before
485 we know what to put in it. */
493 /* Position of this field, counting in bits from start of
494 containing structure.
495 For gdbarch_bits_big_endian=1 targets, it is the bit offset to the MSB.
496 For gdbarch_bits_big_endian=0 targets, it is the bit offset to the LSB.
497 For a range bound or enum value, this is the value itself. */
501 /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr
502 is the location (in the target) of the static field.
503 Otherwise, physname is the mangled label of the static field. */
508 /* The field location can be computed by evaluating the following DWARF
509 block. This can be used in Fortran variable-length arrays, for
512 struct dwarf2_locexpr_baton
*dwarf_block
;
516 /* For a function or member type, this is 1 if the argument is marked
517 artificial. Artificial arguments should not be shown to the
518 user. For TYPE_CODE_RANGE it is set if the specific bound is not
520 unsigned int artificial
: 1;
522 /* Discriminant for union field_location. */
523 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 2;
525 /* Size of this field, in bits, or zero if not packed.
526 If non-zero in an array type, indicates the element size in
527 bits (used only in Ada at the moment).
528 For an unpacked field, the field's type's length
529 says how many bytes the field occupies. */
531 unsigned int bitsize
: 29;
533 /* In a struct or union type, type of this field.
534 In a function or member type, type of this argument.
535 In an array type, the domain-type of the array. */
539 /* Name of field, value or argument.
540 NULL for range bounds, array domains, and member function
546 /* Union member used for range types. */
550 /* Low bound of range. */
554 /* High bound of range. */
558 /* Flags indicating whether the values of low and high are
559 valid. When true, the respective range value is
560 undefined. Currently used only for FORTRAN arrays. */
569 /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE
570 is the base class which defined the virtual function table pointer.
572 For types that are pointer to member types (TYPE_CODE_METHODPTR,
573 TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer
576 For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
577 type that contains the method.
581 struct type
*vptr_basetype
;
583 /* Slot to point to additional language-specific fields of this type. */
587 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to
588 cplus_struct_default, a default static instance of a struct
589 cplus_struct_type. */
591 struct cplus_struct_type
*cplus_stuff
;
593 /* GNAT_STUFF is for types for which the GNAT Ada compiler
594 provides additional information. */
595 struct gnat_aux_type
*gnat_stuff
;
597 /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two
598 floatformat objects that describe the floating-point value
599 that resides within the type. The first is for big endian
600 targets and the second is for little endian targets. */
602 const struct floatformat
**floatformat
;
604 /* For TYPE_CODE_FUNC types, the calling convention for targets
605 supporting multiple ABIs. Right now this is only fetched from
606 the Dwarf-2 DW_AT_calling_convention attribute. */
607 unsigned calling_convention
;
611 /* A ``struct type'' describes a particular instance of a type, with
612 some particular qualification. */
615 /* Type that is a pointer to this type.
616 NULL if no such pointer-to type is known yet.
617 The debugger may add the address of such a type
618 if it has to construct one later. */
620 struct type
*pointer_type
;
622 /* C++: also need a reference type. */
624 struct type
*reference_type
;
626 /* Variant chain. This points to a type that differs from this one only
627 in qualifiers and length. Currently, the possible qualifiers are
628 const, volatile, code-space, data-space, and address class. The
629 length may differ only when one of the address class flags are set.
630 The variants are linked in a circular ring and share MAIN_TYPE. */
633 /* Flags specific to this instance of the type, indicating where
634 on the ring we are. */
637 /* Length of storage for a value of this type. This is what
638 sizeof(type) would return; use it for address arithmetic,
639 memory reads and writes, etc. This size includes padding. For
640 example, an i386 extended-precision floating point value really
641 only occupies ten bytes, but most ABI's declare its size to be
642 12 bytes, to preserve alignment. A `struct type' representing
643 such a floating-point type would have a `length' value of 12,
644 even though the last two bytes are unused.
646 There's a bit of a host/target mess here, if you're concerned
647 about machines whose bytes aren't eight bits long, or who don't
648 have byte-addressed memory. Various places pass this to memcpy
649 and such, meaning it must be in units of host bytes. Various
650 other places expect they can calculate addresses by adding it
651 and such, meaning it must be in units of target bytes. For
652 some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
653 and TARGET_CHAR_BIT will be (say) 32, this is a problem.
655 One fix would be to make this field in bits (requiring that it
656 always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
657 the other choice would be to make it consistently in units of
658 HOST_CHAR_BIT. However, this would still fail to address
659 machines based on a ternary or decimal representation. */
663 /* Core type, shared by a group of qualified types. */
664 struct main_type
*main_type
;
667 #define NULL_TYPE ((struct type *) 0)
669 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
672 struct cplus_struct_type
674 /* Number of base classes this type derives from. The baseclasses are
675 stored in the first N_BASECLASSES fields (i.e. the `fields' field of
676 the struct type). I think only the `type' field of such a field has
681 /* Number of methods with unique names. All overloaded methods with
682 the same name count only once. */
686 /* Number of methods described for this type, not including the
687 methods that it derives from. */
689 short nfn_fields_total
;
691 /* One if this struct is a dynamic class, as defined by the
692 Itanium C++ ABI: if it requires a virtual table pointer,
693 because it or any of its base classes have one or more virtual
694 member functions or virtual base classes. Minus one if not
695 dynamic. Zero if not yet computed. */
698 /* For derived classes, the number of base classes is given by n_baseclasses
699 and virtual_field_bits is a bit vector containing one bit per base class.
700 If the base class is virtual, the corresponding bit will be set.
705 class C : public B, public virtual A {};
707 B is a baseclass of C; A is a virtual baseclass for C.
708 This is a C++ 2.0 language feature. */
710 B_TYPE
*virtual_field_bits
;
712 /* For classes with private fields, the number of fields is given by
713 nfields and private_field_bits is a bit vector containing one bit
715 If the field is private, the corresponding bit will be set. */
717 B_TYPE
*private_field_bits
;
719 /* For classes with protected fields, the number of fields is given by
720 nfields and protected_field_bits is a bit vector containing one bit
722 If the field is private, the corresponding bit will be set. */
724 B_TYPE
*protected_field_bits
;
726 /* for classes with fields to be ignored, either this is optimized out
727 or this field has length 0 */
729 B_TYPE
*ignore_field_bits
;
731 /* For classes, structures, and unions, a description of each field,
732 which consists of an overloaded name, followed by the types of
733 arguments that the method expects, and then the name after it
734 has been renamed to make it distinct.
736 fn_fieldlists points to an array of nfn_fields of these. */
741 /* The overloaded name. */
745 /* The number of methods with this name. */
749 /* The list of methods. */
754 /* If is_stub is clear, this is the mangled name which we can
755 look up to find the address of the method (FIXME: it would
756 be cleaner to have a pointer to the struct symbol here
759 /* If is_stub is set, this is the portion of the mangled
760 name which specifies the arguments. For example, "ii",
761 if there are two int arguments, or "" if there are no
762 arguments. See gdb_mangle_name for the conversion from this
763 format to the one used if is_stub is clear. */
767 /* The function type for the method.
768 (This comment used to say "The return value of the method",
769 but that's wrong. The function type
770 is expected here, i.e. something with TYPE_CODE_FUNC,
771 and *not* the return-value type). */
775 /* For virtual functions.
776 First baseclass that defines this virtual function. */
778 struct type
*fcontext
;
782 unsigned int is_const
:1;
783 unsigned int is_volatile
:1;
784 unsigned int is_private
:1;
785 unsigned int is_protected
:1;
786 unsigned int is_public
:1;
787 unsigned int is_abstract
:1;
788 unsigned int is_static
:1;
789 unsigned int is_final
:1;
790 unsigned int is_synchronized
:1;
791 unsigned int is_native
:1;
792 unsigned int is_artificial
:1;
794 /* A stub method only has some fields valid (but they are enough
795 to reconstruct the rest of the fields). */
796 unsigned int is_stub
:1;
799 unsigned int dummy
:4;
801 /* Index into that baseclass's virtual function table,
802 minus 2; else if static: VOFFSET_STATIC; else: 0. */
804 unsigned int voffset
:16;
806 #define VOFFSET_STATIC 1
814 /* Pointer to information about enclosing scope, if this is a
815 * local type. If it is not a local type, this is NULL
817 struct local_type_info
825 /* Struct used in computing virtual base list */
828 struct type
*vbasetype
; /* pointer to virtual base */
829 struct vbase
*next
; /* next in chain */
832 /* Struct used for ranking a function for overload resolution */
833 struct badness_vector
839 /* GNAT Ada-specific information for various Ada types. */
842 /* Parallel type used to encode information about dynamic types
843 used in Ada (such as variant records, variable-size array,
845 struct type
* descriptive_type
;
848 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
849 this shared static structure. */
851 extern const struct cplus_struct_type cplus_struct_default
;
853 extern void allocate_cplus_struct_type (struct type
*);
855 #define INIT_CPLUS_SPECIFIC(type) \
856 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
857 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) &cplus_struct_default)
859 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
861 #define HAVE_CPLUS_STRUCT(type) \
862 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
863 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
865 extern const struct gnat_aux_type gnat_aux_default
;
867 extern void allocate_gnat_aux_type (struct type
*);
869 #define INIT_GNAT_SPECIFIC(type) \
870 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
871 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
872 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
873 /* A macro that returns non-zero if the type-specific data should be
874 read as "gnat-stuff". */
875 #define HAVE_GNAT_AUX_INFO(type) \
876 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
878 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
879 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
880 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
881 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
882 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
883 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
884 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
885 #define TYPE_CHAIN(thistype) (thistype)->chain
886 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
887 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
888 so you only have to call check_typedef once. Since allocate_value
889 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
890 #define TYPE_LENGTH(thistype) (thistype)->length
891 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
892 type, you need to do TYPE_CODE (check_type (this_type)). */
893 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
894 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
895 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
897 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
898 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
899 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low
900 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high
901 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
902 TYPE_RANGE_DATA(range_type)->low_undefined
903 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
904 TYPE_RANGE_DATA(range_type)->high_undefined
906 /* Moto-specific stuff for FORTRAN arrays */
908 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
909 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
910 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
911 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
913 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
914 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
916 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
917 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
921 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
922 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
923 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
924 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
925 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
926 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
927 #define TYPE_SPECIFIC_FIELD(thistype) \
928 TYPE_MAIN_TYPE(thistype)->type_specific_field
929 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
930 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
931 where we're trying to print an Ada array using the C language.
932 In that case, there is no "cplus_stuff", but the C language assumes
933 that there is. What we do, in that case, is pretend that there is
934 an implicit one which is the default cplus stuff. */
935 #define TYPE_CPLUS_SPECIFIC(thistype) \
936 (!HAVE_CPLUS_STRUCT(thistype) \
937 ? (struct cplus_struct_type*)&cplus_struct_default \
938 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
939 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
940 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
941 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
942 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
943 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.calling_convention
944 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
945 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
946 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
947 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
948 #define BASETYPE_VIA_PUBLIC(thistype, index) \
949 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
950 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
952 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
953 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
954 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
956 #define FIELD_TYPE(thisfld) ((thisfld).type)
957 #define FIELD_NAME(thisfld) ((thisfld).name)
958 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
959 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
960 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
961 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
962 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
963 #define SET_FIELD_BITPOS(thisfld, bitpos) \
964 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
965 FIELD_BITPOS (thisfld) = (bitpos))
966 #define SET_FIELD_PHYSNAME(thisfld, name) \
967 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
968 FIELD_STATIC_PHYSNAME (thisfld) = (name))
969 #define SET_FIELD_PHYSADDR(thisfld, addr) \
970 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
971 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
972 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
973 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
974 FIELD_DWARF_BLOCK (thisfld) = (addr))
975 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
976 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
978 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
979 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
980 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
981 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
982 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
983 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
984 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
985 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
986 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
987 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
988 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
990 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
991 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
992 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
993 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
994 #define TYPE_FIELD_IGNORE_BITS(thistype) \
995 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
996 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
997 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
998 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
999 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1000 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1001 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1002 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1003 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1004 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1005 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1006 #define TYPE_FIELD_PRIVATE(thistype, n) \
1007 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1008 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1009 #define TYPE_FIELD_PROTECTED(thistype, n) \
1010 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1011 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1012 #define TYPE_FIELD_IGNORE(thistype, n) \
1013 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1014 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1015 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1016 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1017 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1019 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1020 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1021 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1022 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1023 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1025 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1026 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1027 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1028 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1029 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1030 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1031 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1032 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1033 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
1034 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
1035 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
1036 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
1037 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
1038 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1039 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
1040 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1041 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1042 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1043 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1044 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1046 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
1047 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
1048 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
1050 #define TYPE_IS_OPAQUE(thistype) (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) || \
1051 (TYPE_CODE (thistype) == TYPE_CODE_UNION)) && \
1052 (TYPE_NFIELDS (thistype) == 0) && \
1053 (!HAVE_CPLUS_STRUCT (thistype) \
1054 || TYPE_NFN_FIELDS (thistype) == 0) && \
1055 (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1059 /* Integral types. */
1061 /* Implicit size/sign (based on the the architecture's ABI). */
1062 struct type
*builtin_void
;
1063 struct type
*builtin_char
;
1064 struct type
*builtin_short
;
1065 struct type
*builtin_int
;
1066 struct type
*builtin_long
;
1067 struct type
*builtin_signed_char
;
1068 struct type
*builtin_unsigned_char
;
1069 struct type
*builtin_unsigned_short
;
1070 struct type
*builtin_unsigned_int
;
1071 struct type
*builtin_unsigned_long
;
1072 struct type
*builtin_float
;
1073 struct type
*builtin_double
;
1074 struct type
*builtin_long_double
;
1075 struct type
*builtin_complex
;
1076 struct type
*builtin_double_complex
;
1077 struct type
*builtin_string
;
1078 struct type
*builtin_bool
;
1079 struct type
*builtin_long_long
;
1080 struct type
*builtin_unsigned_long_long
;
1081 struct type
*builtin_decfloat
;
1082 struct type
*builtin_decdouble
;
1083 struct type
*builtin_declong
;
1085 /* "True" character types.
1086 We use these for the '/c' print format, because c_char is just a
1087 one-byte integral type, which languages less laid back than C
1088 will print as ... well, a one-byte integral type. */
1089 struct type
*builtin_true_char
;
1090 struct type
*builtin_true_unsigned_char
;
1092 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1093 is for when an architecture needs to describe a register that has
1095 struct type
*builtin_int0
;
1096 struct type
*builtin_int8
;
1097 struct type
*builtin_uint8
;
1098 struct type
*builtin_int16
;
1099 struct type
*builtin_uint16
;
1100 struct type
*builtin_int32
;
1101 struct type
*builtin_uint32
;
1102 struct type
*builtin_int64
;
1103 struct type
*builtin_uint64
;
1104 struct type
*builtin_int128
;
1105 struct type
*builtin_uint128
;
1107 /* Wide character types. */
1108 struct type
*builtin_char16
;
1109 struct type
*builtin_char32
;
1111 /* Pointer types. */
1113 /* `pointer to data' type. Some target platforms use an implicitly
1114 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1115 struct type
*builtin_data_ptr
;
1117 /* `pointer to function (returning void)' type. Harvard
1118 architectures mean that ABI function and code pointers are not
1119 interconvertible. Similarly, since ANSI, C standards have
1120 explicitly said that pointers to functions and pointers to data
1121 are not interconvertible --- that is, you can't cast a function
1122 pointer to void * and back, and expect to get the same value.
1123 However, all function pointer types are interconvertible, so void
1124 (*) () can server as a generic function pointer. */
1125 struct type
*builtin_func_ptr
;
1128 /* Special-purpose types. */
1130 /* This type is used to represent a GDB internal function. */
1131 struct type
*internal_fn
;
1134 /* Return the type table for the specified architecture. */
1135 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1138 /* Per-objfile types used by symbol readers. */
1142 /* Basic types based on the objfile architecture. */
1143 struct type
*builtin_void
;
1144 struct type
*builtin_char
;
1145 struct type
*builtin_short
;
1146 struct type
*builtin_int
;
1147 struct type
*builtin_long
;
1148 struct type
*builtin_long_long
;
1149 struct type
*builtin_signed_char
;
1150 struct type
*builtin_unsigned_char
;
1151 struct type
*builtin_unsigned_short
;
1152 struct type
*builtin_unsigned_int
;
1153 struct type
*builtin_unsigned_long
;
1154 struct type
*builtin_unsigned_long_long
;
1155 struct type
*builtin_float
;
1156 struct type
*builtin_double
;
1157 struct type
*builtin_long_double
;
1159 /* This type is used to represent symbol addresses. */
1160 struct type
*builtin_core_addr
;
1162 /* This type represents a type that was unrecognized in symbol read-in. */
1163 struct type
*builtin_error
;
1165 /* Types used for symbols with no debug information. */
1166 struct type
*nodebug_text_symbol
;
1167 struct type
*nodebug_data_symbol
;
1168 struct type
*nodebug_unknown_symbol
;
1169 struct type
*nodebug_tls_symbol
;
1172 /* Return the type table for the specified objfile. */
1173 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1176 /* Explicit floating-point formats. See "floatformat.h". */
1177 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1178 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1179 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1180 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1181 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1182 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1183 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1184 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1185 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1186 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1187 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1190 /* Allocate space for storing data associated with a particular type.
1191 We ensure that the space is allocated using the same mechanism that
1192 was used to allocate the space for the type structure itself. I.E.
1193 if the type is on an objfile's objfile_obstack, then the space for data
1194 associated with that type will also be allocated on the objfile_obstack.
1195 If the type is not associated with any particular objfile (such as
1196 builtin types), then the data space will be allocated with xmalloc,
1197 the same as for the type structure. */
1199 #define TYPE_ALLOC(t,size) \
1200 (TYPE_OBJFILE_OWNED (t) \
1201 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
1204 #define TYPE_ZALLOC(t,size) \
1205 (TYPE_OBJFILE_OWNED (t) \
1206 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \
1210 /* Use alloc_type to allocate a type owned by an objfile.
1211 Use alloc_type_arch to allocate a type owned by an architecture.
1212 Use alloc_type_copy to allocate a type with the same owner as a
1213 pre-existing template type, no matter whether objfile or gdbarch. */
1214 extern struct type
*alloc_type (struct objfile
*);
1215 extern struct type
*alloc_type_arch (struct gdbarch
*);
1216 extern struct type
*alloc_type_copy (const struct type
*);
1218 /* Return the type's architecture. For types owned by an architecture,
1219 that architecture is returned. For types owned by an objfile, that
1220 objfile's architecture is returned. */
1221 extern struct gdbarch
*get_type_arch (const struct type
*);
1223 /* Helper function to construct objfile-owned types. */
1224 extern struct type
*init_type (enum type_code
, int, int, char *,
1227 /* Helper functions to construct architecture-owned types. */
1228 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int, char *);
1229 extern struct type
*arch_integer_type (struct gdbarch
*, int, int, char *);
1230 extern struct type
*arch_character_type (struct gdbarch
*, int, int, char *);
1231 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int, char *);
1232 extern struct type
*arch_float_type (struct gdbarch
*, int, char *,
1233 const struct floatformat
**);
1234 extern struct type
*arch_complex_type (struct gdbarch
*, char *,
1237 /* Helper functions to construct a struct or record type. An
1238 initially empty type is created using arch_composite_type().
1239 Fields are then added using append_composite_type_field*(). A union
1240 type has its size set to the largest field. A struct type has each
1241 field packed against the previous. */
1243 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1244 char *name
, enum type_code code
);
1245 extern void append_composite_type_field (struct type
*t
, char *name
,
1246 struct type
*field
);
1247 extern void append_composite_type_field_aligned (struct type
*t
,
1251 struct field
*append_composite_type_field_raw (struct type
*t
, char *name
,
1252 struct type
*field
);
1254 /* Helper functions to construct a bit flags type. An initially empty
1255 type is created using arch_flag_type(). Flags are then added using
1256 append_flag_type_flag(). */
1257 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1258 char *name
, int length
);
1259 extern void append_flags_type_flag (struct type
*type
, int bitpos
, char *name
);
1261 extern void make_vector_type (struct type
*array_type
);
1262 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
1264 extern struct type
*lookup_reference_type (struct type
*);
1266 extern struct type
*make_reference_type (struct type
*, struct type
**);
1268 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
1270 extern void replace_type (struct type
*, struct type
*);
1272 extern int address_space_name_to_int (struct gdbarch
*, char *);
1274 extern const char *address_space_int_to_name (struct gdbarch
*, int);
1276 extern struct type
*make_type_with_address_space (struct type
*type
,
1277 int space_identifier
);
1279 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
1281 extern struct type
*lookup_methodptr_type (struct type
*);
1283 extern void smash_to_method_type (struct type
*type
, struct type
*domain
,
1284 struct type
*to_type
, struct field
*args
,
1285 int nargs
, int varargs
);
1287 extern void smash_to_memberptr_type (struct type
*, struct type
*,
1290 extern void smash_to_methodptr_type (struct type
*, struct type
*);
1292 extern struct type
*allocate_stub_method (struct type
*);
1294 extern char *type_name_no_tag (const struct type
*);
1296 extern struct type
*lookup_struct_elt_type (struct type
*, char *, int);
1298 extern struct type
*make_pointer_type (struct type
*, struct type
**);
1300 extern struct type
*lookup_pointer_type (struct type
*);
1302 extern struct type
*make_function_type (struct type
*, struct type
**);
1304 extern struct type
*lookup_function_type (struct type
*);
1306 extern struct type
*create_range_type (struct type
*, struct type
*, LONGEST
,
1309 extern struct type
*create_array_type (struct type
*, struct type
*,
1311 extern struct type
*lookup_array_range_type (struct type
*, int, int);
1313 extern struct type
*create_string_type (struct type
*, struct type
*,
1315 extern struct type
*lookup_string_range_type (struct type
*, int, int);
1317 extern struct type
*create_set_type (struct type
*, struct type
*);
1319 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
1320 struct gdbarch
*,char *);
1322 extern struct type
*lookup_signed_typename (const struct language_defn
*,
1323 struct gdbarch
*,char *);
1325 extern struct type
*check_typedef (struct type
*);
1327 #define CHECK_TYPEDEF(TYPE) \
1329 (TYPE) = check_typedef (TYPE); \
1332 extern void check_stub_method_group (struct type
*, int);
1334 extern char *gdb_mangle_name (struct type
*, int, int);
1336 extern struct type
*lookup_typename (const struct language_defn
*,
1337 struct gdbarch
*, char *,
1338 struct block
*, int);
1340 extern struct type
*lookup_template_type (char *, struct type
*,
1343 extern int get_vptr_fieldno (struct type
*, struct type
**);
1345 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
1347 extern int class_types_same_p (const struct type
*, const struct type
*);
1349 extern int is_ancestor (struct type
*, struct type
*);
1351 extern int is_public_ancestor (struct type
*, struct type
*);
1353 extern int is_unique_ancestor (struct type
*, struct value
*);
1355 /* Overload resolution */
1357 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1359 /* Badness if parameter list length doesn't match arg list length */
1360 #define LENGTH_MISMATCH_BADNESS 100
1361 /* Dummy badness value for nonexistent parameter positions */
1362 #define TOO_FEW_PARAMS_BADNESS 100
1363 /* Badness if no conversion among types */
1364 #define INCOMPATIBLE_TYPE_BADNESS 100
1366 /* Badness of integral promotion */
1367 #define INTEGER_PROMOTION_BADNESS 1
1368 /* Badness of floating promotion */
1369 #define FLOAT_PROMOTION_BADNESS 1
1370 /* Badness of integral conversion */
1371 #define INTEGER_CONVERSION_BADNESS 2
1372 /* Badness of floating conversion */
1373 #define FLOAT_CONVERSION_BADNESS 2
1374 /* Badness of integer<->floating conversions */
1375 #define INT_FLOAT_CONVERSION_BADNESS 2
1376 /* Badness of converting to a boolean */
1377 #define BOOLEAN_CONVERSION_BADNESS 2
1378 /* Badness of pointer conversion */
1379 #define POINTER_CONVERSION_BADNESS 2
1380 /* Badness of conversion of pointer to void pointer */
1381 #define VOID_PTR_CONVERSION_BADNESS 2
1382 /* Badness of converting derived to base class */
1383 #define BASE_CONVERSION_BADNESS 2
1384 /* Badness of converting from non-reference to reference */
1385 #define REFERENCE_CONVERSION_BADNESS 2
1387 /* Non-standard conversions allowed by the debugger */
1388 /* Converting a pointer to an int is usually OK */
1389 #define NS_POINTER_CONVERSION_BADNESS 10
1392 extern int compare_badness (struct badness_vector
*, struct badness_vector
*);
1394 extern struct badness_vector
*rank_function (struct type
**, int,
1395 struct type
**, int);
1397 extern int rank_one_type (struct type
*, struct type
*);
1399 extern void recursive_dump_type (struct type
*, int);
1401 extern int field_is_static (struct field
*);
1405 extern void print_scalar_formatted (const void *, struct type
*,
1406 const struct value_print_options
*,
1407 int, struct ui_file
*);
1409 extern int can_dereference (struct type
*);
1411 extern int is_integral_type (struct type
*);
1413 extern void maintenance_print_type (char *, int);
1415 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
1417 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
1419 htab_t copied_types
);
1421 extern struct type
*copy_type (const struct type
*type
);
1423 #endif /* GDBTYPES_H */