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 << 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. */
858 /* Struct used for ranking a function for overload resolution */
859 struct badness_vector
865 /* GNAT Ada-specific information for various Ada types. */
868 /* Parallel type used to encode information about dynamic types
869 used in Ada (such as variant records, variable-size array,
871 struct type* descriptive_type;
874 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
875 this shared static structure. */
877 extern const struct cplus_struct_type cplus_struct_default;
879 extern void allocate_cplus_struct_type (struct type *);
881 #define INIT_CPLUS_SPECIFIC(type) \
882 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
883 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) &cplus_struct_default)
885 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
887 #define HAVE_CPLUS_STRUCT(type) \
888 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
889 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
891 extern const struct gnat_aux_type gnat_aux_default;
893 extern void allocate_gnat_aux_type (struct type *);
895 #define INIT_GNAT_SPECIFIC(type) \
896 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
897 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
898 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
899 /* A macro that returns non-zero if the type-specific data should be
900 read as "gnat-stuff". */
901 #define HAVE_GNAT_AUX_INFO(type) \
902 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
904 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
905 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
906 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
907 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
908 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
909 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
910 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
911 #define TYPE_CHAIN(thistype) (thistype)->chain
912 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
913 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
914 so you only have to call check_typedef once. Since allocate_value
915 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
916 #define TYPE_LENGTH(thistype) (thistype)->length
917 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
918 type, you need to do TYPE_CODE (check_type (this_type)). */
919 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
920 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
921 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
923 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
924 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
925 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low
926 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high
927 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
928 TYPE_RANGE_DATA(range_type)->low_undefined
929 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
930 TYPE_RANGE_DATA(range_type)->high_undefined
932 /* Moto-specific stuff for FORTRAN arrays */
934 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
935 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
936 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
937 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
939 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
940 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
942 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
943 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
947 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
948 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
949 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
950 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
951 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
952 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
953 #define TYPE_SPECIFIC_FIELD(thistype) \
954 TYPE_MAIN_TYPE(thistype)->type_specific_field
955 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
956 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
957 where we're trying to print an Ada array using the C language.
958 In that case, there is no "cplus_stuff", but the C language assumes
959 that there is. What we do, in that case, is pretend that there is
960 an implicit one which is the default cplus stuff. */
961 #define TYPE_CPLUS_SPECIFIC(thistype) \
962 (!HAVE_CPLUS_STRUCT(thistype) \
963 ? (struct cplus_struct_type*)&cplus_struct_default \
964 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
965 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
966 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
967 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
968 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
969 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.calling_convention
970 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
971 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
972 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
973 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
974 #define BASETYPE_VIA_PUBLIC(thistype, index) \
975 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
976 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
978 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
979 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
980 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
982 #define FIELD_TYPE(thisfld) ((thisfld).type)
983 #define FIELD_NAME(thisfld) ((thisfld).name)
984 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
985 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
986 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
987 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
988 #define SET_FIELD_BITPOS(thisfld, bitpos) \
989 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
990 FIELD_BITPOS (thisfld) = (bitpos))
991 #define SET_FIELD_PHYSNAME(thisfld, name) \
992 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
993 FIELD_STATIC_PHYSNAME (thisfld) = (name))
994 #define SET_FIELD_PHYSADDR(thisfld, addr) \
995 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
996 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
997 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
998 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1000 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1001 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1002 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1003 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1004 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1005 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1006 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1007 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1008 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1009 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1011 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1012 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1013 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1014 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1015 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1016 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1017 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1018 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1019 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1020 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1021 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1022 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1023 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1024 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1025 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1026 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1027 #define TYPE_FIELD_PRIVATE(thistype, n) \
1028 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1029 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1030 #define TYPE_FIELD_PROTECTED(thistype, n) \
1031 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1032 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1033 #define TYPE_FIELD_IGNORE(thistype, n) \
1034 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1035 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1036 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1037 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1038 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1040 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1041 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1042 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1043 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1044 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1046 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1047 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1048 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1049 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1050 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1051 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1053 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1054 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1055 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1056 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1057 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1058 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1059 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1060 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1061 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
1062 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
1063 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
1064 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
1065 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
1066 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1067 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
1068 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1069 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1070 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1071 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1072 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1074 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
1075 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
1076 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
1078 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1079 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1080 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1081 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1082 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1083 TYPE_TYPEDEF_FIELD (thistype, n).name
1084 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1085 TYPE_TYPEDEF_FIELD (thistype, n).type
1086 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1087 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1089 #define TYPE_IS_OPAQUE(thistype) (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) || \
1090 (TYPE_CODE (thistype) == TYPE_CODE_UNION)) && \
1091 (TYPE_NFIELDS (thistype) == 0) && \
1092 (!HAVE_CPLUS_STRUCT (thistype) \
1093 || TYPE_NFN_FIELDS (thistype) == 0) && \
1094 (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1096 /* A helper macro that returns the name of an error type. If the type
1097 has a name, it is used; otherwise, a default is used. */
1098 #define TYPE_ERROR_NAME(type) \
1099 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1103 /* Integral types. */
1105 /* Implicit size/sign (based on the the architecture's ABI). */
1106 struct type *builtin_void;
1107 struct type *builtin_char;
1108 struct type *builtin_short;
1109 struct type *builtin_int;
1110 struct type *builtin_long;
1111 struct type *builtin_signed_char;
1112 struct type *builtin_unsigned_char;
1113 struct type *builtin_unsigned_short;
1114 struct type *builtin_unsigned_int;
1115 struct type *builtin_unsigned_long;
1116 struct type *builtin_float;
1117 struct type *builtin_double;
1118 struct type *builtin_long_double;
1119 struct type *builtin_complex;
1120 struct type *builtin_double_complex;
1121 struct type *builtin_string;
1122 struct type *builtin_bool;
1123 struct type *builtin_long_long;
1124 struct type *builtin_unsigned_long_long;
1125 struct type *builtin_decfloat;
1126 struct type *builtin_decdouble;
1127 struct type *builtin_declong;
1129 /* "True" character types.
1130 We use these for the '/c' print format, because c_char is just a
1131 one-byte integral type, which languages less laid back than C
1132 will print as ... well, a one-byte integral type. */
1133 struct type *builtin_true_char;
1134 struct type *builtin_true_unsigned_char;
1136 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1137 is for when an architecture needs to describe a register that has
1139 struct type *builtin_int0;
1140 struct type *builtin_int8;
1141 struct type *builtin_uint8;
1142 struct type *builtin_int16;
1143 struct type *builtin_uint16;
1144 struct type *builtin_int32;
1145 struct type *builtin_uint32;
1146 struct type *builtin_int64;
1147 struct type *builtin_uint64;
1148 struct type *builtin_int128;
1149 struct type *builtin_uint128;
1151 /* Wide character types. */
1152 struct type *builtin_char16;
1153 struct type *builtin_char32;
1155 /* Pointer types. */
1157 /* `pointer to data' type. Some target platforms use an implicitly
1158 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1159 struct type *builtin_data_ptr;
1161 /* `pointer to function (returning void)' type. Harvard
1162 architectures mean that ABI function and code pointers are not
1163 interconvertible. Similarly, since ANSI, C standards have
1164 explicitly said that pointers to functions and pointers to data
1165 are not interconvertible --- that is, you can't cast a function
1166 pointer to void * and back, and expect to get the same value.
1167 However, all function pointer types are interconvertible, so void
1168 (*) () can server as a generic function pointer. */
1169 struct type *builtin_func_ptr;
1172 /* Special-purpose types. */
1174 /* This type is used to represent a GDB internal function. */
1175 struct type *internal_fn;
1178 /* Return the type table for the specified architecture. */
1179 extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch);
1182 /* Per-objfile types used by symbol readers. */
1186 /* Basic types based on the objfile architecture. */
1187 struct type *builtin_void;
1188 struct type *builtin_char;
1189 struct type *builtin_short;
1190 struct type *builtin_int;
1191 struct type *builtin_long;
1192 struct type *builtin_long_long;
1193 struct type *builtin_signed_char;
1194 struct type *builtin_unsigned_char;
1195 struct type *builtin_unsigned_short;
1196 struct type *builtin_unsigned_int;
1197 struct type *builtin_unsigned_long;
1198 struct type *builtin_unsigned_long_long;
1199 struct type *builtin_float;
1200 struct type *builtin_double;
1201 struct type *builtin_long_double;
1203 /* This type is used to represent symbol addresses. */
1204 struct type *builtin_core_addr;
1206 /* This type represents a type that was unrecognized in symbol read-in. */
1207 struct type *builtin_error;
1209 /* Types used for symbols with no debug information. */
1210 struct type *nodebug_text_symbol;
1211 struct type *nodebug_data_symbol;
1212 struct type *nodebug_unknown_symbol;
1213 struct type *nodebug_tls_symbol;
1216 /* Return the type table for the specified objfile. */
1217 extern const struct objfile_type *objfile_type (struct objfile *objfile);
1220 /* Explicit floating-point formats. See "floatformat.h". */
1221 extern const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN];
1222 extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN];
1223 extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN];
1224 extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN];
1225 extern const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN];
1226 extern const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN];
1227 extern const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN];
1228 extern const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN];
1229 extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN];
1230 extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN];
1231 extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN];
1232 extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN];
1235 /* Allocate space for storing data associated with a particular type.
1236 We ensure that the space is allocated using the same mechanism that
1237 was used to allocate the space for the type structure itself. I.E.
1238 if the type is on an objfile's objfile_obstack, then the space for data
1239 associated with that type will also be allocated on the objfile_obstack.
1240 If the type is not associated with any particular objfile (such as
1241 builtin types), then the data space will be allocated with xmalloc,
1242 the same as for the type structure. */
1244 #define TYPE_ALLOC(t,size) \
1245 (TYPE_OBJFILE_OWNED (t) \
1246 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
1249 #define TYPE_ZALLOC(t,size) \
1250 (TYPE_OBJFILE_OWNED (t) \
1251 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \
1255 /* Use alloc_type to allocate a type owned by an objfile.
1256 Use alloc_type_arch to allocate a type owned by an architecture.
1257 Use alloc_type_copy to allocate a type with the same owner as a
1258 pre-existing template type, no matter whether objfile or gdbarch. */
1259 extern struct type *alloc_type (struct objfile *);
1260 extern struct type *alloc_type_arch (struct gdbarch *);
1261 extern struct type *alloc_type_copy (const struct type *);
1263 /* Return the type's architecture. For types owned by an architecture,
1264 that architecture is returned. For types owned by an objfile, that
1265 objfile's architecture is returned. */
1266 extern struct gdbarch *get_type_arch (const struct type *);
1268 /* Helper function to construct objfile-owned types. */
1269 extern struct type *init_type (enum type_code, int, int, char *,
1272 /* Helper functions to construct architecture-owned types. */
1273 extern struct type *arch_type (struct gdbarch *, enum type_code, int, char *);
1274 extern struct type *arch_integer_type (struct gdbarch *, int, int, char *);
1275 extern struct type *arch_character_type (struct gdbarch *, int, int, char *);
1276 extern struct type *arch_boolean_type (struct gdbarch *, int, int, char *);
1277 extern struct type *arch_float_type (struct gdbarch *, int, char *,
1278 const struct floatformat **);
1279 extern struct type *arch_complex_type (struct gdbarch *, char *,
1282 /* Helper functions to construct a struct or record type. An
1283 initially empty type is created using arch_composite_type().
1284 Fields are then added using append_composite_type_field*(). A union
1285 type has its size set to the largest field. A struct type has each
1286 field packed against the previous. */
1288 extern struct type *arch_composite_type (struct gdbarch *gdbarch,
1289 char *name, enum type_code code);
1290 extern void append_composite_type_field (struct type *t, char *name,
1291 struct type *field);
1292 extern void append_composite_type_field_aligned (struct type *t,
1296 struct field *append_composite_type_field_raw (struct type *t, char *name,
1297 struct type *field);
1299 /* Helper functions to construct a bit flags type. An initially empty
1300 type is created using arch_flag_type(). Flags are then added using
1301 append_flag_type_flag(). */
1302 extern struct type *arch_flags_type (struct gdbarch *gdbarch,
1303 char *name, int length);
1304 extern void append_flags_type_flag (struct type *type, int bitpos, char *name);
1306 extern void make_vector_type (struct type *array_type);
1307 extern struct type *init_vector_type (struct type *elt_type, int n);
1309 extern struct type *lookup_reference_type (struct type *);
1311 extern struct type *make_reference_type (struct type *, struct type **);
1313 extern struct type *make_cv_type (int, int, struct type *, struct type **);
1315 extern void replace_type (struct type *, struct type *);
1317 extern int address_space_name_to_int (struct gdbarch *, char *);
1319 extern const char *address_space_int_to_name (struct gdbarch *, int);
1321 extern struct type *make_type_with_address_space (struct type *type,
1322 int space_identifier);
1324 extern struct type *lookup_memberptr_type (struct type *, struct type *);
1326 extern struct type *lookup_methodptr_type (struct type *);
1328 extern void smash_to_method_type (struct type *type, struct type *domain,
1329 struct type *to_type, struct field *args,
1330 int nargs, int varargs);
1332 extern void smash_to_memberptr_type (struct type *, struct type *,
1335 extern void smash_to_methodptr_type (struct type *, struct type *);
1337 extern struct type *allocate_stub_method (struct type *);
1339 extern char *type_name_no_tag (const struct type *);
1341 extern struct type *lookup_struct_elt_type (struct type *, char *, int);
1343 extern struct type *make_pointer_type (struct type *, struct type **);
1345 extern struct type *lookup_pointer_type (struct type *);
1347 extern struct type *make_function_type (struct type *, struct type **);
1349 extern struct type *lookup_function_type (struct type *);
1351 extern struct type *create_range_type (struct type *, struct type *, LONGEST,
1354 extern struct type *create_array_type (struct type *, struct type *,
1356 extern struct type *lookup_array_range_type (struct type *, int, int);
1358 extern struct type *create_string_type (struct type *, struct type *,
1360 extern struct type *lookup_string_range_type (struct type *, int, int);
1362 extern struct type *create_set_type (struct type *, struct type *);
1364 extern struct type *lookup_unsigned_typename (const struct language_defn *,
1365 struct gdbarch *,char *);
1367 extern struct type *lookup_signed_typename (const struct language_defn *,
1368 struct gdbarch *,char *);
1370 extern struct type *check_typedef (struct type *);
1372 #define CHECK_TYPEDEF(TYPE) \
1374 (TYPE) = check_typedef (TYPE); \
1377 extern void check_stub_method_group (struct type *, int);
1379 extern char *gdb_mangle_name (struct type *, int, int);
1381 extern struct type *lookup_typename (const struct language_defn *,
1382 struct gdbarch *, char *,
1383 const struct block *, int);
1385 extern struct type *lookup_template_type (char *, struct type *,
1388 extern int get_vptr_fieldno (struct type *, struct type **);
1390 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *);
1392 extern int get_array_bounds (struct type *type, LONGEST *low_bound,
1393 LONGEST *high_bound);
1395 extern int class_types_same_p (const struct type *, const struct type *);
1397 extern int is_ancestor (struct type *, struct type *);
1399 extern int is_public_ancestor (struct type *, struct type *);
1401 extern int is_unique_ancestor (struct type *, struct value *);
1403 /* Overload resolution */
1405 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1407 /* Badness if parameter list length doesn't match arg list length */
1408 extern const struct rank LENGTH_MISMATCH_BADNESS;
1410 /* Dummy badness value for nonexistent parameter positions */
1411 extern const struct rank TOO_FEW_PARAMS_BADNESS;
1412 /* Badness if no conversion among types */
1413 extern const struct rank INCOMPATIBLE_TYPE_BADNESS;
1415 /* Badness of an exact match. */
1416 extern const struct rank EXACT_MATCH_BADNESS;
1418 /* Badness of integral promotion */
1419 extern const struct rank INTEGER_PROMOTION_BADNESS;
1420 /* Badness of floating promotion */
1421 extern const struct rank FLOAT_PROMOTION_BADNESS;
1422 /* Badness of converting a derived class pointer
1423 to a base class pointer. */
1424 extern const struct rank BASE_PTR_CONVERSION_BADNESS;
1425 /* Badness of integral conversion */
1426 extern const struct rank INTEGER_CONVERSION_BADNESS;
1427 /* Badness of floating conversion */
1428 extern const struct rank FLOAT_CONVERSION_BADNESS;
1429 /* Badness of integer<->floating conversions */
1430 extern const struct rank INT_FLOAT_CONVERSION_BADNESS;
1431 /* Badness of conversion of pointer to void pointer */
1432 extern const struct rank VOID_PTR_CONVERSION_BADNESS;
1433 /* Badness of conversion of pointer to boolean. */
1434 extern const struct rank BOOL_PTR_CONVERSION_BADNESS;
1435 /* Badness of converting derived to base class */
1436 extern const struct rank BASE_CONVERSION_BADNESS;
1437 /* Badness of converting from non-reference to reference */
1438 extern const struct rank REFERENCE_CONVERSION_BADNESS;
1440 /* Non-standard conversions allowed by the debugger */
1441 /* Converting a pointer to an int is usually OK */
1442 extern const struct rank NS_POINTER_CONVERSION_BADNESS;
1445 extern struct rank sum_ranks (struct rank a, struct rank b);
1446 extern int compare_ranks (struct rank a, struct rank b);
1448 extern int compare_badness (struct badness_vector *, struct badness_vector *);
1450 extern struct badness_vector *rank_function (struct type **, int,
1451 struct type **, int);
1453 extern struct rank rank_one_type (struct type *, struct type *);
1455 extern void recursive_dump_type (struct type *, int);
1457 extern int field_is_static (struct field *);
1461 extern void print_scalar_formatted (const void *, struct type *,
1462 const struct value_print_options *,
1463 int, struct ui_file *);
1465 extern int can_dereference (struct type *);
1467 extern int is_integral_type (struct type *);
1469 extern void maintenance_print_type (char *, int);
1471 extern htab_t create_copied_types_hash (struct objfile *objfile);
1473 extern struct type *copy_type_recursive (struct objfile *objfile,
1475 htab_t copied_types);
1477 extern struct type *copy_type (const struct type *type);
1479 #endif /* GDBTYPES_H */