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, 2011
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 << 7),
163 TYPE_FLAG_NOSIGN = (1 << 8),
164 TYPE_FLAG_STUB = (1 << 9),
165 TYPE_FLAG_TARGET_STUB = (1 << 10),
166 TYPE_FLAG_STATIC = (1 << 11),
167 TYPE_FLAG_PROTOTYPED = (1 << 12),
168 TYPE_FLAG_INCOMPLETE = (1 << 13),
169 TYPE_FLAG_VARARGS = (1 << 14),
170 TYPE_FLAG_VECTOR = (1 << 15),
171 TYPE_FLAG_FIXED_INSTANCE = (1 << 16),
172 TYPE_FLAG_STUB_SUPPORTED = (1 << 17),
174 /* Used for error-checking. */
175 TYPE_FLAG_MIN = TYPE_FLAG_UNSIGNED
178 /* Some bits for the type's instance_flags word. See the macros below
179 for documentation on each bit. Note that if you add a value here,
180 you must update the enum type_flag_value as well. */
181 enum type_instance_flag_value
183 TYPE_INSTANCE_FLAG_CONST = (1 << 0),
184 TYPE_INSTANCE_FLAG_VOLATILE = (1 << 1),
185 TYPE_INSTANCE_FLAG_CODE_SPACE = (1 << 2),
186 TYPE_INSTANCE_FLAG_DATA_SPACE = (1 << 3),
187 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 = (1 << 4),
188 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2 = (1 << 5),
189 TYPE_INSTANCE_FLAG_NOTTEXT = (1 << 6),
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_INSTANCE_FLAGS (t) & TYPE_INSTANCE_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 */
348 /* A discriminant to determine which field in the main_type.type_specific
349 union is being used, if any.
351 For types such as TYPE_CODE_FLT or TYPE_CODE_FUNC, the use of this
352 discriminant is really redundant, as we know from the type code
353 which field is going to be used. As such, it would be possible to
354 reduce the size of this enum in order to save a bit or two for
355 other fields of struct main_type. But, since we still have extra
356 room , and for the sake of clarity and consistency, we treat all fields
357 of the union the same way. */
359 enum type_specific_kind
362 TYPE_SPECIFIC_CPLUS_STUFF,
363 TYPE_SPECIFIC_GNAT_STUFF,
364 TYPE_SPECIFIC_FLOATFORMAT,
365 TYPE_SPECIFIC_CALLING_CONVENTION
368 /* This structure is space-critical.
369 Its layout has been tweaked to reduce the space used. */
373 /* Code for kind of type */
375 ENUM_BITFIELD(type_code) code : 8;
377 /* Flags about this type. These fields appear at this location
378 because they packs nicely here. See the TYPE_* macros for
379 documentation about these fields. */
381 unsigned int flag_unsigned : 1;
382 unsigned int flag_nosign : 1;
383 unsigned int flag_stub : 1;
384 unsigned int flag_target_stub : 1;
385 unsigned int flag_static : 1;
386 unsigned int flag_prototyped : 1;
387 unsigned int flag_incomplete : 1;
388 unsigned int flag_varargs : 1;
389 unsigned int flag_vector : 1;
390 unsigned int flag_stub_supported : 1;
391 unsigned int flag_fixed_instance : 1;
392 unsigned int flag_objfile_owned : 1;
393 /* True if this type was declared with "class" rather than
395 unsigned int flag_declared_class : 1;
397 /* A discriminant telling us which field of the type_specific union
398 is being used for this type, if any. */
399 ENUM_BITFIELD(type_specific_kind) type_specific_field : 3;
401 /* Number of fields described for this type. This field appears at
402 this location because it packs nicely here. */
406 /* Field number of the virtual function table pointer in
407 VPTR_BASETYPE. If -1, we were unable to find the virtual
408 function table pointer in initial symbol reading, and
409 get_vptr_fieldno should be called to find it if possible.
410 get_vptr_fieldno will update this field if possible.
411 Otherwise the value is left at -1.
413 Unused if this type does not have virtual functions.
415 This field appears at this location because it packs nicely here. */
419 /* Name of this type, or NULL if none.
421 This is used for printing only, except by poorly designed C++ code.
422 For looking up a name, look for a symbol in the VAR_DOMAIN. */
426 /* Tag name for this type, or NULL if none. This means that the
427 name of the type consists of a keyword followed by the tag name.
428 Which keyword is determined by the type code ("struct" for
429 TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages
432 This is used for printing only, except by poorly designed C++ code.
433 For looking up a name, look for a symbol in the STRUCT_DOMAIN.
434 One more legitimate use is that if TYPE_FLAG_STUB is set, this is
435 the name to use to look for definitions in other files. */
439 /* Every type is now associated with a particular objfile, and the
440 type is allocated on the objfile_obstack for that objfile. One problem
441 however, is that there are times when gdb allocates new types while
442 it is not in the process of reading symbols from a particular objfile.
443 Fortunately, these happen when the type being created is a derived
444 type of an existing type, such as in lookup_pointer_type(). So
445 we can just allocate the new type using the same objfile as the
446 existing type, but to do this we need a backpointer to the objfile
447 from the existing type. Yes this is somewhat ugly, but without
448 major overhaul of the internal type system, it can't be avoided
453 struct objfile *objfile;
454 struct gdbarch *gdbarch;
457 /* For a pointer type, describes the type of object pointed to.
458 For an array type, describes the type of the elements.
459 For a function or method type, describes the type of the return value.
460 For a range type, describes the type of the full range.
461 For a complex type, describes the type of each coordinate.
462 For a special record or union type encoding a dynamic-sized type
463 in GNAT, a memoized pointer to a corresponding static version of
467 struct type *target_type;
469 /* For structure and union types, a description of each field.
470 For set and pascal array types, there is one "field",
471 whose type is the domain type of the set or array.
472 For range types, there are two "fields",
473 the minimum and maximum values (both inclusive).
474 For enum types, each possible value is described by one "field".
475 For a function or method type, a "field" for each parameter.
476 For C++ classes, there is one field for each base class (if it is
477 a derived class) plus one field for each class data member. Member
478 functions are recorded elsewhere.
480 Using a pointer to a separate array of fields
481 allows all types to have the same size, which is useful
482 because we can allocate the space for a type before
483 we know what to put in it. */
491 /* Position of this field, counting in bits from start of
492 containing structure.
493 For gdbarch_bits_big_endian=1 targets, it is the bit offset to the MSB.
494 For gdbarch_bits_big_endian=0 targets, it is the bit offset to the LSB.
495 For a range bound or enum value, this is the value itself. */
499 /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr
500 is the location (in the target) of the static field.
501 Otherwise, physname is the mangled label of the static field. */
508 /* For a function or member type, this is 1 if the argument is marked
509 artificial. Artificial arguments should not be shown to the
510 user. For TYPE_CODE_RANGE it is set if the specific bound is not
512 unsigned int artificial : 1;
514 /* Discriminant for union field_location. */
515 ENUM_BITFIELD(field_loc_kind) loc_kind : 2;
517 /* Size of this field, in bits, or zero if not packed.
518 If non-zero in an array type, indicates the element size in
519 bits (used only in Ada at the moment).
520 For an unpacked field, the field's type's length
521 says how many bytes the field occupies. */
523 unsigned int bitsize : 29;
525 /* In a struct or union type, type of this field.
526 In a function or member type, type of this argument.
527 In an array type, the domain-type of the array. */
531 /* Name of field, value or argument.
532 NULL for range bounds, array domains, and member function
538 /* Union member used for range types. */
542 /* Low bound of range. */
546 /* High bound of range. */
550 /* Flags indicating whether the values of low and high are
551 valid. When true, the respective range value is
552 undefined. Currently used only for FORTRAN arrays. */
561 /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE
562 is the base class which defined the virtual function table pointer.
564 For types that are pointer to member types (TYPE_CODE_METHODPTR,
565 TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer
568 For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
569 type that contains the method.
573 struct type *vptr_basetype;
575 /* Slot to point to additional language-specific fields of this type. */
579 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to
580 cplus_struct_default, a default static instance of a struct
581 cplus_struct_type. */
583 struct cplus_struct_type *cplus_stuff;
585 /* GNAT_STUFF is for types for which the GNAT Ada compiler
586 provides additional information. */
587 struct gnat_aux_type *gnat_stuff;
589 /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two
590 floatformat objects that describe the floating-point value
591 that resides within the type. The first is for big endian
592 targets and the second is for little endian targets. */
594 const struct floatformat **floatformat;
596 /* For TYPE_CODE_FUNC types, the calling convention for targets
597 supporting multiple ABIs. Right now this is only fetched from
598 the Dwarf-2 DW_AT_calling_convention attribute. */
599 unsigned calling_convention;
603 /* A ``struct type'' describes a particular instance of a type, with
604 some particular qualification. */
607 /* Type that is a pointer to this type.
608 NULL if no such pointer-to type is known yet.
609 The debugger may add the address of such a type
610 if it has to construct one later. */
612 struct type *pointer_type;
614 /* C++: also need a reference type. */
616 struct type *reference_type;
618 /* Variant chain. This points to a type that differs from this one only
619 in qualifiers and length. Currently, the possible qualifiers are
620 const, volatile, code-space, data-space, and address class. The
621 length may differ only when one of the address class flags are set.
622 The variants are linked in a circular ring and share MAIN_TYPE. */
625 /* Flags specific to this instance of the type, indicating where
628 For TYPE_CODE_TYPEDEF the flags of the typedef type should be binary
629 or-ed with the target type, with a special case for address class and
630 space class. For example if this typedef does not specify any new
631 qualifiers, TYPE_INSTANCE_FLAGS is 0 and the instance flags are
632 completely inherited from the target type. No qualifiers can be cleared
633 by the typedef. See also check_typedef. */
636 /* Length of storage for a value of this type. This is what
637 sizeof(type) would return; use it for address arithmetic,
638 memory reads and writes, etc. This size includes padding. For
639 example, an i386 extended-precision floating point value really
640 only occupies ten bytes, but most ABI's declare its size to be
641 12 bytes, to preserve alignment. A `struct type' representing
642 such a floating-point type would have a `length' value of 12,
643 even though the last two bytes are unused.
645 There's a bit of a host/target mess here, if you're concerned
646 about machines whose bytes aren't eight bits long, or who don't
647 have byte-addressed memory. Various places pass this to memcpy
648 and such, meaning it must be in units of host bytes. Various
649 other places expect they can calculate addresses by adding it
650 and such, meaning it must be in units of target bytes. For
651 some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
652 and TARGET_CHAR_BIT will be (say) 32, this is a problem.
654 One fix would be to make this field in bits (requiring that it
655 always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
656 the other choice would be to make it consistently in units of
657 HOST_CHAR_BIT. However, this would still fail to address
658 machines based on a ternary or decimal representation. */
662 /* Core type, shared by a group of qualified types. */
663 struct main_type *main_type;
666 #define NULL_TYPE ((struct type *) 0)
668 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
671 struct cplus_struct_type
673 /* Number of base classes this type derives from. The baseclasses are
674 stored in the first N_BASECLASSES fields (i.e. the `fields' field of
675 the struct type). I think only the `type' field of such a field has
680 /* Number of methods with unique names. All overloaded methods with
681 the same name count only once. */
685 /* Number of methods described for this type, not including the
686 methods that it derives from. */
688 short nfn_fields_total;
690 /* Number of template arguments. */
691 unsigned short n_template_arguments;
693 /* One if this struct is a dynamic class, as defined by the
694 Itanium C++ ABI: if it requires a virtual table pointer,
695 because it or any of its base classes have one or more virtual
696 member functions or virtual base classes. Minus one if not
697 dynamic. Zero if not yet computed. */
700 /* For derived classes, the number of base classes is given by n_baseclasses
701 and virtual_field_bits is a bit vector containing one bit per base class.
702 If the base class is virtual, the corresponding bit will be set.
707 class C : public B, public virtual A {};
709 B is a baseclass of C; A is a virtual baseclass for C.
710 This is a C++ 2.0 language feature. */
712 B_TYPE *virtual_field_bits;
714 /* For classes with private fields, the number of fields is given by
715 nfields and private_field_bits is a bit vector containing one bit
717 If the field is private, the corresponding bit will be set. */
719 B_TYPE *private_field_bits;
721 /* For classes with protected fields, the number of fields is given by
722 nfields and protected_field_bits is a bit vector containing one bit
724 If the field is private, the corresponding bit will be set. */
726 B_TYPE *protected_field_bits;
728 /* for classes with fields to be ignored, either this is optimized out
729 or this field has length 0 */
731 B_TYPE *ignore_field_bits;
733 /* For classes, structures, and unions, a description of each field,
734 which consists of an overloaded name, followed by the types of
735 arguments that the method expects, and then the name after it
736 has been renamed to make it distinct.
738 fn_fieldlists points to an array of nfn_fields of these. */
743 /* The overloaded name. */
747 /* The number of methods with this name. */
751 /* The list of methods. */
756 /* If is_stub is clear, this is the mangled name which we can
757 look up to find the address of the method (FIXME: it would
758 be cleaner to have a pointer to the struct symbol here
761 /* If is_stub is set, this is the portion of the mangled
762 name which specifies the arguments. For example, "ii",
763 if there are two int arguments, or "" if there are no
764 arguments. See gdb_mangle_name for the conversion from this
765 format to the one used if is_stub is clear. */
769 /* The function type for the method.
770 (This comment used to say "The return value of the method",
771 but that's wrong. The function type
772 is expected here, i.e. something with TYPE_CODE_FUNC,
773 and *not* the return-value type). */
777 /* For virtual functions.
778 First baseclass that defines this virtual function. */
780 struct type *fcontext;
784 unsigned int is_const:1;
785 unsigned int is_volatile:1;
786 unsigned int is_private:1;
787 unsigned int is_protected:1;
788 unsigned int is_public:1;
789 unsigned int is_abstract:1;
790 unsigned int is_static:1;
791 unsigned int is_final:1;
792 unsigned int is_synchronized:1;
793 unsigned int is_native:1;
794 unsigned int is_artificial:1;
796 /* A stub method only has some fields valid (but they are enough
797 to reconstruct the rest of the fields). */
798 unsigned int is_stub:1;
801 unsigned int dummy:4;
803 /* Index into that baseclass's virtual function table,
804 minus 2; else if static: VOFFSET_STATIC; else: 0. */
806 unsigned int voffset:16;
808 #define VOFFSET_STATIC 1
816 /* Pointer to information about enclosing scope, if this is a
817 * local type. If it is not a local type, this is NULL
819 struct local_type_info
826 /* typedefs defined inside this class. TYPEDEF_FIELD points to an array of
827 TYPEDEF_FIELD_COUNT elements. */
830 /* Unqualified name to be prefixed by owning class qualified name. */
833 /* Type this typedef named NAME represents. */
837 unsigned typedef_field_count;
839 /* The template arguments. This is an array with
840 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
842 struct symbol **template_arguments;
845 /* Struct used in computing virtual base list */
848 struct type *vbasetype; /* pointer to virtual base */
849 struct vbase *next; /* next in chain */
852 /* Struct used to store conversion rankings. */
857 /* When two conversions are of the same type and therefore have the same
858 rank, subrank is used to differentiate the two.
859 Eg: Two derived-class-pointer to base-class-pointer conversions would
860 both have base pointer conversion rank, but the conversion with the
861 shorter distance to the ancestor is preferable. 'subrank' would be used
866 /* Struct used for ranking a function for overload resolution */
867 struct badness_vector
873 /* GNAT Ada-specific information for various Ada types. */
876 /* Parallel type used to encode information about dynamic types
877 used in Ada (such as variant records, variable-size array,
879 struct type* descriptive_type;
882 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
883 this shared static structure. */
885 extern const struct cplus_struct_type cplus_struct_default;
887 extern void allocate_cplus_struct_type (struct type *);
889 #define INIT_CPLUS_SPECIFIC(type) \
890 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
891 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) &cplus_struct_default)
893 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
895 #define HAVE_CPLUS_STRUCT(type) \
896 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
897 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
899 extern const struct gnat_aux_type gnat_aux_default;
901 extern void allocate_gnat_aux_type (struct type *);
903 #define INIT_GNAT_SPECIFIC(type) \
904 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
905 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
906 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
907 /* A macro that returns non-zero if the type-specific data should be
908 read as "gnat-stuff". */
909 #define HAVE_GNAT_AUX_INFO(type) \
910 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
912 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
913 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
914 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
915 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
916 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
917 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
918 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
919 #define TYPE_CHAIN(thistype) (thistype)->chain
920 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
921 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
922 so you only have to call check_typedef once. Since allocate_value
923 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
924 #define TYPE_LENGTH(thistype) (thistype)->length
925 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
926 type, you need to do TYPE_CODE (check_type (this_type)). */
927 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
928 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
929 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
931 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
932 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
933 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low
934 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high
935 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
936 TYPE_RANGE_DATA(range_type)->low_undefined
937 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
938 TYPE_RANGE_DATA(range_type)->high_undefined
940 /* Moto-specific stuff for FORTRAN arrays */
942 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
943 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
944 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
945 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
947 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
948 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
950 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
951 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
955 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
956 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
957 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
958 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
959 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
960 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
961 #define TYPE_SPECIFIC_FIELD(thistype) \
962 TYPE_MAIN_TYPE(thistype)->type_specific_field
963 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
964 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
965 where we're trying to print an Ada array using the C language.
966 In that case, there is no "cplus_stuff", but the C language assumes
967 that there is. What we do, in that case, is pretend that there is
968 an implicit one which is the default cplus stuff. */
969 #define TYPE_CPLUS_SPECIFIC(thistype) \
970 (!HAVE_CPLUS_STRUCT(thistype) \
971 ? (struct cplus_struct_type*)&cplus_struct_default \
972 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
973 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
974 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
975 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
976 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
977 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.calling_convention
978 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
979 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
980 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
981 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
982 #define BASETYPE_VIA_PUBLIC(thistype, index) \
983 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
984 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
986 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
987 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
988 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
990 #define FIELD_TYPE(thisfld) ((thisfld).type)
991 #define FIELD_NAME(thisfld) ((thisfld).name)
992 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
993 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
994 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
995 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
996 #define SET_FIELD_BITPOS(thisfld, bitpos) \
997 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
998 FIELD_BITPOS (thisfld) = (bitpos))
999 #define SET_FIELD_PHYSNAME(thisfld, name) \
1000 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1001 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1002 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1003 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1004 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1005 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1006 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1008 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1009 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1010 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1011 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1012 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1013 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1014 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1015 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1016 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1017 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1019 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1020 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1021 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1022 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1023 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1024 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1025 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1026 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1027 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1028 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1029 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1030 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1031 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1032 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1033 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1034 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1035 #define TYPE_FIELD_PRIVATE(thistype, n) \
1036 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1037 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1038 #define TYPE_FIELD_PROTECTED(thistype, n) \
1039 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1040 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1041 #define TYPE_FIELD_IGNORE(thistype, n) \
1042 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1043 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1044 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1045 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1046 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1048 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1049 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1050 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1051 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1052 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1054 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1055 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1056 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1057 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1058 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1059 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1061 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1062 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1063 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1064 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1065 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1066 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1067 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1068 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1069 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
1070 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
1071 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
1072 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
1073 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
1074 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1075 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
1076 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1077 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1078 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1079 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1080 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1082 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
1083 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
1084 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
1086 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1087 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1088 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1089 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1090 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1091 TYPE_TYPEDEF_FIELD (thistype, n).name
1092 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1093 TYPE_TYPEDEF_FIELD (thistype, n).type
1094 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1095 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1097 #define TYPE_IS_OPAQUE(thistype) \
1098 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1099 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1100 && (TYPE_NFIELDS (thistype) == 0) \
1101 && (!HAVE_CPLUS_STRUCT (thistype) \
1102 || TYPE_NFN_FIELDS (thistype) == 0) \
1103 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1105 /* A helper macro that returns the name of an error type. If the type
1106 has a name, it is used; otherwise, a default is used. */
1107 #define TYPE_ERROR_NAME(type) \
1108 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1112 /* Integral types. */
1114 /* Implicit size/sign (based on the the architecture's ABI). */
1115 struct type *builtin_void;
1116 struct type *builtin_char;
1117 struct type *builtin_short;
1118 struct type *builtin_int;
1119 struct type *builtin_long;
1120 struct type *builtin_signed_char;
1121 struct type *builtin_unsigned_char;
1122 struct type *builtin_unsigned_short;
1123 struct type *builtin_unsigned_int;
1124 struct type *builtin_unsigned_long;
1125 struct type *builtin_float;
1126 struct type *builtin_double;
1127 struct type *builtin_long_double;
1128 struct type *builtin_complex;
1129 struct type *builtin_double_complex;
1130 struct type *builtin_string;
1131 struct type *builtin_bool;
1132 struct type *builtin_long_long;
1133 struct type *builtin_unsigned_long_long;
1134 struct type *builtin_decfloat;
1135 struct type *builtin_decdouble;
1136 struct type *builtin_declong;
1138 /* "True" character types.
1139 We use these for the '/c' print format, because c_char is just a
1140 one-byte integral type, which languages less laid back than C
1141 will print as ... well, a one-byte integral type. */
1142 struct type *builtin_true_char;
1143 struct type *builtin_true_unsigned_char;
1145 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1146 is for when an architecture needs to describe a register that has
1148 struct type *builtin_int0;
1149 struct type *builtin_int8;
1150 struct type *builtin_uint8;
1151 struct type *builtin_int16;
1152 struct type *builtin_uint16;
1153 struct type *builtin_int32;
1154 struct type *builtin_uint32;
1155 struct type *builtin_int64;
1156 struct type *builtin_uint64;
1157 struct type *builtin_int128;
1158 struct type *builtin_uint128;
1160 /* Wide character types. */
1161 struct type *builtin_char16;
1162 struct type *builtin_char32;
1164 /* Pointer types. */
1166 /* `pointer to data' type. Some target platforms use an implicitly
1167 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1168 struct type *builtin_data_ptr;
1170 /* `pointer to function (returning void)' type. Harvard
1171 architectures mean that ABI function and code pointers are not
1172 interconvertible. Similarly, since ANSI, C standards have
1173 explicitly said that pointers to functions and pointers to data
1174 are not interconvertible --- that is, you can't cast a function
1175 pointer to void * and back, and expect to get the same value.
1176 However, all function pointer types are interconvertible, so void
1177 (*) () can server as a generic function pointer. */
1178 struct type *builtin_func_ptr;
1181 /* Special-purpose types. */
1183 /* This type is used to represent a GDB internal function. */
1184 struct type *internal_fn;
1187 /* Return the type table for the specified architecture. */
1188 extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch);
1191 /* Per-objfile types used by symbol readers. */
1195 /* Basic types based on the objfile architecture. */
1196 struct type *builtin_void;
1197 struct type *builtin_char;
1198 struct type *builtin_short;
1199 struct type *builtin_int;
1200 struct type *builtin_long;
1201 struct type *builtin_long_long;
1202 struct type *builtin_signed_char;
1203 struct type *builtin_unsigned_char;
1204 struct type *builtin_unsigned_short;
1205 struct type *builtin_unsigned_int;
1206 struct type *builtin_unsigned_long;
1207 struct type *builtin_unsigned_long_long;
1208 struct type *builtin_float;
1209 struct type *builtin_double;
1210 struct type *builtin_long_double;
1212 /* This type is used to represent symbol addresses. */
1213 struct type *builtin_core_addr;
1215 /* This type represents a type that was unrecognized in symbol read-in. */
1216 struct type *builtin_error;
1218 /* Types used for symbols with no debug information. */
1219 struct type *nodebug_text_symbol;
1220 struct type *nodebug_data_symbol;
1221 struct type *nodebug_unknown_symbol;
1222 struct type *nodebug_tls_symbol;
1225 /* Return the type table for the specified objfile. */
1226 extern const struct objfile_type *objfile_type (struct objfile *objfile);
1229 /* Explicit floating-point formats. See "floatformat.h". */
1230 extern const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN];
1231 extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN];
1232 extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN];
1233 extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN];
1234 extern const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN];
1235 extern const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN];
1236 extern const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN];
1237 extern const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN];
1238 extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN];
1239 extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN];
1240 extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN];
1241 extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN];
1244 /* Allocate space for storing data associated with a particular type.
1245 We ensure that the space is allocated using the same mechanism that
1246 was used to allocate the space for the type structure itself. I.E.
1247 if the type is on an objfile's objfile_obstack, then the space for data
1248 associated with that type will also be allocated on the objfile_obstack.
1249 If the type is not associated with any particular objfile (such as
1250 builtin types), then the data space will be allocated with xmalloc,
1251 the same as for the type structure. */
1253 #define TYPE_ALLOC(t,size) \
1254 (TYPE_OBJFILE_OWNED (t) \
1255 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
1258 #define TYPE_ZALLOC(t,size) \
1259 (TYPE_OBJFILE_OWNED (t) \
1260 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \
1264 /* Use alloc_type to allocate a type owned by an objfile.
1265 Use alloc_type_arch to allocate a type owned by an architecture.
1266 Use alloc_type_copy to allocate a type with the same owner as a
1267 pre-existing template type, no matter whether objfile or gdbarch. */
1268 extern struct type *alloc_type (struct objfile *);
1269 extern struct type *alloc_type_arch (struct gdbarch *);
1270 extern struct type *alloc_type_copy (const struct type *);
1272 /* Return the type's architecture. For types owned by an architecture,
1273 that architecture is returned. For types owned by an objfile, that
1274 objfile's architecture is returned. */
1275 extern struct gdbarch *get_type_arch (const struct type *);
1277 /* Helper function to construct objfile-owned types. */
1278 extern struct type *init_type (enum type_code, int, int, char *,
1281 /* Helper functions to construct architecture-owned types. */
1282 extern struct type *arch_type (struct gdbarch *, enum type_code, int, char *);
1283 extern struct type *arch_integer_type (struct gdbarch *, int, int, char *);
1284 extern struct type *arch_character_type (struct gdbarch *, int, int, char *);
1285 extern struct type *arch_boolean_type (struct gdbarch *, int, int, char *);
1286 extern struct type *arch_float_type (struct gdbarch *, int, char *,
1287 const struct floatformat **);
1288 extern struct type *arch_complex_type (struct gdbarch *, char *,
1291 /* Helper functions to construct a struct or record type. An
1292 initially empty type is created using arch_composite_type().
1293 Fields are then added using append_composite_type_field*(). A union
1294 type has its size set to the largest field. A struct type has each
1295 field packed against the previous. */
1297 extern struct type *arch_composite_type (struct gdbarch *gdbarch,
1298 char *name, enum type_code code);
1299 extern void append_composite_type_field (struct type *t, char *name,
1300 struct type *field);
1301 extern void append_composite_type_field_aligned (struct type *t,
1305 struct field *append_composite_type_field_raw (struct type *t, char *name,
1306 struct type *field);
1308 /* Helper functions to construct a bit flags type. An initially empty
1309 type is created using arch_flag_type(). Flags are then added using
1310 append_flag_type_flag(). */
1311 extern struct type *arch_flags_type (struct gdbarch *gdbarch,
1312 char *name, int length);
1313 extern void append_flags_type_flag (struct type *type, int bitpos, char *name);
1315 extern void make_vector_type (struct type *array_type);
1316 extern struct type *init_vector_type (struct type *elt_type, int n);
1318 extern struct type *lookup_reference_type (struct type *);
1320 extern struct type *make_reference_type (struct type *, struct type **);
1322 extern struct type *make_cv_type (int, int, struct type *, struct type **);
1324 extern void replace_type (struct type *, struct type *);
1326 extern int address_space_name_to_int (struct gdbarch *, char *);
1328 extern const char *address_space_int_to_name (struct gdbarch *, int);
1330 extern struct type *make_type_with_address_space (struct type *type,
1331 int space_identifier);
1333 extern struct type *lookup_memberptr_type (struct type *, struct type *);
1335 extern struct type *lookup_methodptr_type (struct type *);
1337 extern void smash_to_method_type (struct type *type, struct type *domain,
1338 struct type *to_type, struct field *args,
1339 int nargs, int varargs);
1341 extern void smash_to_memberptr_type (struct type *, struct type *,
1344 extern void smash_to_methodptr_type (struct type *, struct type *);
1346 extern struct type *allocate_stub_method (struct type *);
1348 extern char *type_name_no_tag (const struct type *);
1350 extern struct type *lookup_struct_elt_type (struct type *, char *, int);
1352 extern struct type *make_pointer_type (struct type *, struct type **);
1354 extern struct type *lookup_pointer_type (struct type *);
1356 extern struct type *make_function_type (struct type *, struct type **);
1358 extern struct type *lookup_function_type (struct type *);
1360 extern struct type *create_range_type (struct type *, struct type *, LONGEST,
1363 extern struct type *create_array_type (struct type *, struct type *,
1365 extern struct type *lookup_array_range_type (struct type *, int, int);
1367 extern struct type *create_string_type (struct type *, struct type *,
1369 extern struct type *lookup_string_range_type (struct type *, int, int);
1371 extern struct type *create_set_type (struct type *, struct type *);
1373 extern struct type *lookup_unsigned_typename (const struct language_defn *,
1374 struct gdbarch *,char *);
1376 extern struct type *lookup_signed_typename (const struct language_defn *,
1377 struct gdbarch *,char *);
1379 extern struct type *check_typedef (struct type *);
1381 #define CHECK_TYPEDEF(TYPE) \
1383 (TYPE) = check_typedef (TYPE); \
1386 extern void check_stub_method_group (struct type *, int);
1388 extern char *gdb_mangle_name (struct type *, int, int);
1390 extern struct type *lookup_typename (const struct language_defn *,
1391 struct gdbarch *, char *,
1392 const struct block *, int);
1394 extern struct type *lookup_template_type (char *, struct type *,
1397 extern int get_vptr_fieldno (struct type *, struct type **);
1399 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *);
1401 extern int get_array_bounds (struct type *type, LONGEST *low_bound,
1402 LONGEST *high_bound);
1404 extern int class_types_same_p (const struct type *, const struct type *);
1406 extern int is_ancestor (struct type *, struct type *);
1408 extern int is_public_ancestor (struct type *, struct type *);
1410 extern int is_unique_ancestor (struct type *, struct value *);
1412 /* Overload resolution */
1414 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1416 /* Badness if parameter list length doesn't match arg list length */
1417 extern const struct rank LENGTH_MISMATCH_BADNESS;
1419 /* Dummy badness value for nonexistent parameter positions */
1420 extern const struct rank TOO_FEW_PARAMS_BADNESS;
1421 /* Badness if no conversion among types */
1422 extern const struct rank INCOMPATIBLE_TYPE_BADNESS;
1424 /* Badness of an exact match. */
1425 extern const struct rank EXACT_MATCH_BADNESS;
1427 /* Badness of integral promotion */
1428 extern const struct rank INTEGER_PROMOTION_BADNESS;
1429 /* Badness of floating promotion */
1430 extern const struct rank FLOAT_PROMOTION_BADNESS;
1431 /* Badness of converting a derived class pointer
1432 to a base class pointer. */
1433 extern const struct rank BASE_PTR_CONVERSION_BADNESS;
1434 /* Badness of integral conversion */
1435 extern const struct rank INTEGER_CONVERSION_BADNESS;
1436 /* Badness of floating conversion */
1437 extern const struct rank FLOAT_CONVERSION_BADNESS;
1438 /* Badness of integer<->floating conversions */
1439 extern const struct rank INT_FLOAT_CONVERSION_BADNESS;
1440 /* Badness of conversion of pointer to void pointer */
1441 extern const struct rank VOID_PTR_CONVERSION_BADNESS;
1442 /* Badness of conversion of pointer to boolean. */
1443 extern const struct rank BOOL_PTR_CONVERSION_BADNESS;
1444 /* Badness of converting derived to base class */
1445 extern const struct rank BASE_CONVERSION_BADNESS;
1446 /* Badness of converting from non-reference to reference */
1447 extern const struct rank REFERENCE_CONVERSION_BADNESS;
1449 /* Non-standard conversions allowed by the debugger */
1450 /* Converting a pointer to an int is usually OK */
1451 extern const struct rank NS_POINTER_CONVERSION_BADNESS;
1454 extern struct rank sum_ranks (struct rank a, struct rank b);
1455 extern int compare_ranks (struct rank a, struct rank b);
1457 extern int compare_badness (struct badness_vector *, struct badness_vector *);
1459 extern struct badness_vector *rank_function (struct type **, int,
1460 struct type **, int);
1462 extern struct rank rank_one_type (struct type *, struct type *);
1464 extern void recursive_dump_type (struct type *, int);
1466 extern int field_is_static (struct field *);
1470 extern void print_scalar_formatted (const void *, struct type *,
1471 const struct value_print_options *,
1472 int, struct ui_file *);
1474 extern int can_dereference (struct type *);
1476 extern int is_integral_type (struct type *);
1478 extern void maintenance_print_type (char *, int);
1480 extern htab_t create_copied_types_hash (struct objfile *objfile);
1482 extern struct type *copy_type_recursive (struct objfile *objfile,
1484 htab_t copied_types);
1486 extern struct type *copy_type (const struct type *type);
1488 #endif /* GDBTYPES_H */