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 */
134 TYPE_CODE_TEMPLATE
, /* C++ template */
135 TYPE_CODE_TEMPLATE_ARG
, /* C++ template arg */
137 TYPE_CODE_NAMESPACE
, /* C++ namespace. */
139 TYPE_CODE_DECFLOAT
, /* Decimal floating point. */
141 /* Internal function type. */
142 TYPE_CODE_INTERNAL_FUNCTION
145 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
146 alias for TYPE_CODE_STRUCT. This is for DWARF, which has a distinct
147 "class" attribute. Perhaps we should actually have a separate TYPE_CODE
148 so that we can print "class" or "struct" depending on what the debug
149 info said. It's not clear we should bother. */
151 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
153 /* Some constants representing each bit field in the main_type. See
154 the bit-field-specific macros, below, for documentation of each
155 constant in this enum. These enum values are only used with
156 init_type. Note that the values are chosen not to conflict with
157 type_instance_flag_value; this lets init_type error-check its
162 TYPE_FLAG_UNSIGNED
= (1 << 6),
163 TYPE_FLAG_NOSIGN
= (1 << 7),
164 TYPE_FLAG_STUB
= (1 << 8),
165 TYPE_FLAG_TARGET_STUB
= (1 << 9),
166 TYPE_FLAG_STATIC
= (1 << 10),
167 TYPE_FLAG_PROTOTYPED
= (1 << 11),
168 TYPE_FLAG_INCOMPLETE
= (1 << 12),
169 TYPE_FLAG_VARARGS
= (1 << 13),
170 TYPE_FLAG_VECTOR
= (1 << 14),
171 TYPE_FLAG_FIXED_INSTANCE
= (1 << 15),
172 TYPE_FLAG_STUB_SUPPORTED
= (1 << 16),
173 TYPE_FLAG_NOTTEXT
= (1 << 17),
175 /* Used for error-checking. */
176 TYPE_FLAG_MIN
= TYPE_FLAG_UNSIGNED
179 /* Some bits for the type's instance_flags word. See the macros below
180 for documentation on each bit. Note that if you add a value here,
181 you must update the enum type_flag_value as well. */
182 enum type_instance_flag_value
184 TYPE_INSTANCE_FLAG_CONST
= (1 << 0),
185 TYPE_INSTANCE_FLAG_VOLATILE
= (1 << 1),
186 TYPE_INSTANCE_FLAG_CODE_SPACE
= (1 << 2),
187 TYPE_INSTANCE_FLAG_DATA_SPACE
= (1 << 3),
188 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1
= (1 << 4),
189 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2
= (1 << 5)
192 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT, the
193 type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */
195 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
197 /* No sign for this type. In C++, "char", "signed char", and "unsigned
198 char" are distinct types; so we need an extra flag to indicate the
199 absence of a sign! */
201 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
203 /* This appears in a type's flags word if it is a stub type (e.g., if
204 someone referenced a type that wasn't defined in a source file
205 via (struct sir_not_appearing_in_this_film *)). */
207 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
209 /* The target type of this type is a stub type, and this type needs to
210 be updated if it gets un-stubbed in check_typedef.
211 Used for arrays and ranges, in which TYPE_LENGTH of the array/range
212 gets set based on the TYPE_LENGTH of the target type.
213 Also, set for TYPE_CODE_TYPEDEF. */
215 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
217 /* Static type. If this is set, the corresponding type had
219 * Note: This may be unnecessary, since static data members
220 * are indicated by other means (bitpos == -1)
223 #define TYPE_STATIC(t) (TYPE_MAIN_TYPE (t)->flag_static)
225 /* This is a function type which appears to have a prototype. We need this
226 for function calls in order to tell us if it's necessary to coerce the args,
227 or to just do the standard conversions. This is used with a short field. */
229 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
231 /* This flag is used to indicate that processing for this type
234 (Mostly intended for HP platforms, where class methods, for
235 instance, can be encountered before their classes in the debug
236 info; the incomplete type has to be marked so that the class and
237 the method can be assigned correct types.) */
239 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
241 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
244 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
246 /* Identify a vector type. Gcc is handling this by adding an extra
247 attribute to the array type. We slurp that in as a new flag of a
248 type. This is used only in dwarf2read.c. */
249 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
251 /* The debugging formats (especially STABS) do not contain enough information
252 to represent all Ada types---especially those whose size depends on
253 dynamic quantities. Therefore, the GNAT Ada compiler includes
254 extra information in the form of additional type definitions
255 connected by naming conventions. This flag indicates that the
256 type is an ordinary (unencoded) GDB type that has been created from
257 the necessary run-time information, and does not need further
258 interpretation. Optionally marks ordinary, fixed-size GDB type. */
260 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
262 /* This debug target supports TYPE_STUB(t). In the unsupported case we have to
263 rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE ().
264 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only guessed
265 the TYPE_STUB(t) value (see dwarfread.c). */
267 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
269 /* Not textual. By default, GDB treats all single byte integers as
270 characters (or elements of strings) unless this flag is set. */
272 #define TYPE_NOTTEXT(t) (TYPE_MAIN_TYPE (t)->flag_nottext)
274 /* Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
275 the objfile retrieved as TYPE_OBJFILE. Otherweise, the type is
276 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
278 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
279 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
280 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
282 /* True if this type was declared using the "class" keyword. This is
283 only valid for C++ structure types, and only used for displaying
284 the type. If false, the structure was declared as a "struct". */
286 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
288 /* Constant type. If this is set, the corresponding type has a
292 #define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST)
294 /* Volatile type. If this is set, the corresponding type has a
298 #define TYPE_VOLATILE(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE)
300 /* Instruction-space delimited type. This is for Harvard architectures
301 which have separate instruction and data address spaces (and perhaps
304 GDB usually defines a flat address space that is a superset of the
305 architecture's two (or more) address spaces, but this is an extension
306 of the architecture's model.
308 If TYPE_FLAG_INST is set, an object of the corresponding type
309 resides in instruction memory, even if its address (in the extended
310 flat address space) does not reflect this.
312 Similarly, if TYPE_FLAG_DATA is set, then an object of the
313 corresponding type resides in the data memory space, even if
314 this is not indicated by its (flat address space) address.
316 If neither flag is set, the default space for functions / methods
317 is instruction space, and for data objects is data memory. */
319 #define TYPE_CODE_SPACE(t) \
320 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE)
322 #define TYPE_DATA_SPACE(t) \
323 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE)
325 /* Address class flags. Some environments provide for pointers whose
326 size is different from that of a normal pointer or address types
327 where the bits are interpreted differently than normal addresses. The
328 TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific
329 ways to represent these different types of address classes. */
330 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
331 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
332 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
333 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
334 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
335 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
336 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
337 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
339 /* Determine which field of the union main_type.fields[x].loc is used. */
343 FIELD_LOC_KIND_BITPOS
, /* bitpos */
344 FIELD_LOC_KIND_PHYSADDR
, /* physaddr */
345 FIELD_LOC_KIND_PHYSNAME
, /* physname */
346 FIELD_LOC_KIND_DWARF_BLOCK
/* dwarf_block */
349 /* A discriminant to determine which field in the main_type.type_specific
350 union is being used, if any.
352 For types such as TYPE_CODE_FLT or TYPE_CODE_FUNC, the use of this
353 discriminant is really redundant, as we know from the type code
354 which field is going to be used. As such, it would be possible to
355 reduce the size of this enum in order to save a bit or two for
356 other fields of struct main_type. But, since we still have extra
357 room , and for the sake of clarity and consistency, we treat all fields
358 of the union the same way. */
360 enum type_specific_kind
363 TYPE_SPECIFIC_CPLUS_STUFF
,
364 TYPE_SPECIFIC_GNAT_STUFF
,
365 TYPE_SPECIFIC_FLOATFORMAT
,
366 TYPE_SPECIFIC_CALLING_CONVENTION
369 /* This structure is space-critical.
370 Its layout has been tweaked to reduce the space used. */
374 /* Code for kind of type */
376 ENUM_BITFIELD(type_code
) code
: 8;
378 /* Flags about this type. These fields appear at this location
379 because they packs nicely here. See the TYPE_* macros for
380 documentation about these fields. */
382 unsigned int flag_unsigned
: 1;
383 unsigned int flag_nosign
: 1;
384 unsigned int flag_stub
: 1;
385 unsigned int flag_target_stub
: 1;
386 unsigned int flag_static
: 1;
387 unsigned int flag_prototyped
: 1;
388 unsigned int flag_incomplete
: 1;
389 unsigned int flag_varargs
: 1;
390 unsigned int flag_vector
: 1;
391 unsigned int flag_stub_supported
: 1;
392 unsigned int flag_nottext
: 1;
393 unsigned int flag_fixed_instance
: 1;
394 unsigned int flag_objfile_owned
: 1;
395 /* True if this type was declared with "class" rather than
397 unsigned int flag_declared_class
: 1;
399 /* A discriminant telling us which field of the type_specific union
400 is being used for this type, if any. */
401 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
403 /* Number of fields described for this type. This field appears at
404 this location because it packs nicely here. */
408 /* Field number of the virtual function table pointer in
409 VPTR_BASETYPE. If -1, we were unable to find the virtual
410 function table pointer in initial symbol reading, and
411 get_vptr_fieldno should be called to find it if possible.
412 get_vptr_fieldno will update this field if possible.
413 Otherwise the value is left at -1.
415 Unused if this type does not have virtual functions.
417 This field appears at this location because it packs nicely here. */
421 /* Name of this type, or NULL if none.
423 This is used for printing only, except by poorly designed C++ code.
424 For looking up a name, look for a symbol in the VAR_DOMAIN. */
428 /* Tag name for this type, or NULL if none. This means that the
429 name of the type consists of a keyword followed by the tag name.
430 Which keyword is determined by the type code ("struct" for
431 TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages
434 This is used for printing only, except by poorly designed C++ code.
435 For looking up a name, look for a symbol in the STRUCT_DOMAIN.
436 One more legitimate use is that if TYPE_FLAG_STUB is set, this is
437 the name to use to look for definitions in other files. */
441 /* Every type is now associated with a particular objfile, and the
442 type is allocated on the objfile_obstack for that objfile. One problem
443 however, is that there are times when gdb allocates new types while
444 it is not in the process of reading symbols from a particular objfile.
445 Fortunately, these happen when the type being created is a derived
446 type of an existing type, such as in lookup_pointer_type(). So
447 we can just allocate the new type using the same objfile as the
448 existing type, but to do this we need a backpointer to the objfile
449 from the existing type. Yes this is somewhat ugly, but without
450 major overhaul of the internal type system, it can't be avoided
455 struct objfile
*objfile
;
456 struct gdbarch
*gdbarch
;
459 /* For a pointer type, describes the type of object pointed to.
460 For an array type, describes the type of the elements.
461 For a function or method type, describes the type of the return value.
462 For a range type, describes the type of the full range.
463 For a complex type, describes the type of each coordinate.
466 struct type
*target_type
;
468 /* For structure and union types, a description of each field.
469 For set and pascal array types, there is one "field",
470 whose type is the domain type of the set or array.
471 For range types, there are two "fields",
472 the minimum and maximum values (both inclusive).
473 For enum types, each possible value is described by one "field".
474 For a function or method type, a "field" for each parameter.
475 For C++ classes, there is one field for each base class (if it is
476 a derived class) plus one field for each class data member. Member
477 functions are recorded elsewhere.
479 Using a pointer to a separate array of fields
480 allows all types to have the same size, which is useful
481 because we can allocate the space for a type before
482 we know what to put in it. */
490 /* Position of this field, counting in bits from start of
491 containing structure.
492 For gdbarch_bits_big_endian=1 targets, it is the bit offset to the MSB.
493 For gdbarch_bits_big_endian=0 targets, it is the bit offset to the LSB.
494 For a range bound or enum value, this is the value itself. */
498 /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr
499 is the location (in the target) of the static field.
500 Otherwise, physname is the mangled label of the static field. */
505 /* The field location can be computed by evaluating the following DWARF
506 block. This can be used in Fortran variable-length arrays, for
509 struct dwarf2_locexpr_baton
*dwarf_block
;
513 /* For a function or member type, this is 1 if the argument is marked
514 artificial. Artificial arguments should not be shown to the
515 user. For TYPE_CODE_RANGE it is set if the specific bound is not
517 unsigned int artificial
: 1;
519 /* Discriminant for union field_location. */
520 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 2;
522 /* Size of this field, in bits, or zero if not packed.
523 If non-zero in an array type, indicates the element size in
524 bits (used only in Ada at the moment).
525 For an unpacked field, the field's type's length
526 says how many bytes the field occupies. */
528 unsigned int bitsize
: 29;
530 /* In a struct or union type, type of this field.
531 In a function or member type, type of this argument.
532 In an array type, the domain-type of the array. */
536 /* Name of field, value or argument.
537 NULL for range bounds, array domains, and member function
543 /* Union member used for range types. */
547 /* Low bound of range. */
551 /* High bound of range. */
555 /* Flags indicating whether the values of low and high are
556 valid. When true, the respective range value is
557 undefined. Currently used only for FORTRAN arrays. */
566 /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE
567 is the base class which defined the virtual function table pointer.
569 For types that are pointer to member types (TYPE_CODE_METHODPTR,
570 TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer
573 For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
574 type that contains the method.
578 struct type
*vptr_basetype
;
580 /* Slot to point to additional language-specific fields of this type. */
584 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to
585 cplus_struct_default, a default static instance of a struct
586 cplus_struct_type. */
588 struct cplus_struct_type
*cplus_stuff
;
590 /* GNAT_STUFF is for types for which the GNAT Ada compiler
591 provides additional information. */
592 struct gnat_aux_type
*gnat_stuff
;
594 /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two
595 floatformat objects that describe the floating-point value
596 that resides within the type. The first is for big endian
597 targets and the second is for little endian targets. */
599 const struct floatformat
**floatformat
;
601 /* For TYPE_CODE_FUNC types, the calling convention for targets
602 supporting multiple ABIs. Right now this is only fetched from
603 the Dwarf-2 DW_AT_calling_convention attribute. */
604 unsigned calling_convention
;
608 /* A ``struct type'' describes a particular instance of a type, with
609 some particular qualification. */
612 /* Type that is a pointer to this type.
613 NULL if no such pointer-to type is known yet.
614 The debugger may add the address of such a type
615 if it has to construct one later. */
617 struct type
*pointer_type
;
619 /* C++: also need a reference type. */
621 struct type
*reference_type
;
623 /* Variant chain. This points to a type that differs from this one only
624 in qualifiers and length. Currently, the possible qualifiers are
625 const, volatile, code-space, data-space, and address class. The
626 length may differ only when one of the address class flags are set.
627 The variants are linked in a circular ring and share MAIN_TYPE. */
630 /* Flags specific to this instance of the type, indicating where
631 on the ring we are. */
634 /* Length of storage for a value of this type. This is what
635 sizeof(type) would return; use it for address arithmetic,
636 memory reads and writes, etc. This size includes padding. For
637 example, an i386 extended-precision floating point value really
638 only occupies ten bytes, but most ABI's declare its size to be
639 12 bytes, to preserve alignment. A `struct type' representing
640 such a floating-point type would have a `length' value of 12,
641 even though the last two bytes are unused.
643 There's a bit of a host/target mess here, if you're concerned
644 about machines whose bytes aren't eight bits long, or who don't
645 have byte-addressed memory. Various places pass this to memcpy
646 and such, meaning it must be in units of host bytes. Various
647 other places expect they can calculate addresses by adding it
648 and such, meaning it must be in units of target bytes. For
649 some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
650 and TARGET_CHAR_BIT will be (say) 32, this is a problem.
652 One fix would be to make this field in bits (requiring that it
653 always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
654 the other choice would be to make it consistently in units of
655 HOST_CHAR_BIT. However, this would still fail to address
656 machines based on a ternary or decimal representation. */
660 /* Core type, shared by a group of qualified types. */
661 struct main_type
*main_type
;
664 #define NULL_TYPE ((struct type *) 0)
666 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
669 struct cplus_struct_type
671 /* Number of base classes this type derives from. The baseclasses are
672 stored in the first N_BASECLASSES fields (i.e. the `fields' field of
673 the struct type). I think only the `type' field of such a field has
678 /* Number of methods with unique names. All overloaded methods with
679 the same name count only once. */
683 /* Number of methods described for this type, not including the
684 methods that it derives from. */
686 short nfn_fields_total
;
688 /* Number of template arguments, placed here for better struct
691 short ntemplate_args
;
693 /* For derived classes, the number of base classes is given by n_baseclasses
694 and virtual_field_bits is a bit vector containing one bit per base class.
695 If the base class is virtual, the corresponding bit will be set.
700 class C : public B, public virtual A {};
702 B is a baseclass of C; A is a virtual baseclass for C.
703 This is a C++ 2.0 language feature. */
705 B_TYPE
*virtual_field_bits
;
707 /* For classes with private fields, the number of fields is given by
708 nfields and private_field_bits is a bit vector containing one bit
710 If the field is private, the corresponding bit will be set. */
712 B_TYPE
*private_field_bits
;
714 /* For classes with protected fields, the number of fields is given by
715 nfields and protected_field_bits is a bit vector containing one bit
717 If the field is private, the corresponding bit will be set. */
719 B_TYPE
*protected_field_bits
;
721 /* for classes with fields to be ignored, either this is optimized out
722 or this field has length 0 */
724 B_TYPE
*ignore_field_bits
;
726 /* For classes, structures, and unions, a description of each field,
727 which consists of an overloaded name, followed by the types of
728 arguments that the method expects, and then the name after it
729 has been renamed to make it distinct.
731 fn_fieldlists points to an array of nfn_fields of these. */
736 /* The overloaded name. */
740 /* The number of methods with this name. */
744 /* The list of methods. */
749 /* If is_stub is clear, this is the mangled name which we can
750 look up to find the address of the method (FIXME: it would
751 be cleaner to have a pointer to the struct symbol here
754 /* If is_stub is set, this is the portion of the mangled
755 name which specifies the arguments. For example, "ii",
756 if there are two int arguments, or "" if there are no
757 arguments. See gdb_mangle_name for the conversion from this
758 format to the one used if is_stub is clear. */
762 /* The function type for the method.
763 (This comment used to say "The return value of the method",
764 but that's wrong. The function type
765 is expected here, i.e. something with TYPE_CODE_FUNC,
766 and *not* the return-value type). */
770 /* For virtual functions.
771 First baseclass that defines this virtual function. */
773 struct type
*fcontext
;
777 unsigned int is_const
:1;
778 unsigned int is_volatile
:1;
779 unsigned int is_private
:1;
780 unsigned int is_protected
:1;
781 unsigned int is_public
:1;
782 unsigned int is_abstract
:1;
783 unsigned int is_static
:1;
784 unsigned int is_final
:1;
785 unsigned int is_synchronized
:1;
786 unsigned int is_native
:1;
787 unsigned int is_artificial
:1;
789 /* A stub method only has some fields valid (but they are enough
790 to reconstruct the rest of the fields). */
791 unsigned int is_stub
:1;
794 unsigned int dummy
:4;
796 /* Index into that baseclass's virtual function table,
797 minus 2; else if static: VOFFSET_STATIC; else: 0. */
799 unsigned int voffset
:16;
801 #define VOFFSET_STATIC 1
809 /* If this "struct type" describes a template, then it
810 * has arguments. "template_args" points to an array of
811 * template arg descriptors, of length "ntemplate_args".
812 * The only real information in each of these template arg descriptors
813 * is a name. "type" will typically just point to a "struct type" with
814 * the placeholder TYPE_CODE_TEMPLATE_ARG type.
823 /* Pointer to information about enclosing scope, if this is a
824 * local type. If it is not a local type, this is NULL
826 struct local_type_info
833 /* One if this struct is a dynamic class, as defined by the
834 Itanium C++ ABI: if it requires a virtual table pointer,
835 because it or any of its base classes have one or more virtual
836 member functions or virtual base classes. Minus one if not
837 dynamic. Zero if not yet computed. */
841 /* Struct used in computing virtual base list */
844 struct type
*vbasetype
; /* pointer to virtual base */
845 struct vbase
*next
; /* next in chain */
848 /* Struct used for ranking a function for overload resolution */
849 struct badness_vector
855 /* GNAT Ada-specific information for various Ada types. */
858 /* Parallel type used to encode information about dynamic types
859 used in Ada (such as variant records, variable-size array,
861 struct type
* descriptive_type
;
864 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
865 this shared static structure. */
867 extern const struct cplus_struct_type cplus_struct_default
;
869 extern void allocate_cplus_struct_type (struct type
*);
871 #define INIT_CPLUS_SPECIFIC(type) \
872 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
873 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) &cplus_struct_default)
875 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
877 #define HAVE_CPLUS_STRUCT(type) \
878 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
879 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
881 extern const struct gnat_aux_type gnat_aux_default
;
883 extern void allocate_gnat_aux_type (struct type
*);
885 #define INIT_GNAT_SPECIFIC(type) \
886 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
887 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
888 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
889 /* A macro that returns non-zero if the type-specific data should be
890 read as "gnat-stuff". */
891 #define HAVE_GNAT_AUX_INFO(type) \
892 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
894 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
895 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
896 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
897 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
898 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
899 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
900 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
901 #define TYPE_CHAIN(thistype) (thistype)->chain
902 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
903 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
904 so you only have to call check_typedef once. Since allocate_value
905 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
906 #define TYPE_LENGTH(thistype) (thistype)->length
907 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
908 type, you need to do TYPE_CODE (check_type (this_type)). */
909 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
910 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
911 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
912 #define TYPE_TEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->template_args
914 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
915 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
916 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low
917 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high
918 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
919 TYPE_RANGE_DATA(range_type)->low_undefined
920 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
921 TYPE_RANGE_DATA(range_type)->high_undefined
923 /* Moto-specific stuff for FORTRAN arrays */
925 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
926 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
927 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
928 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
930 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
931 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
933 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
934 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
938 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
939 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
940 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
941 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
942 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
943 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
944 #define TYPE_NTEMPLATE_ARGS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->ntemplate_args
945 #define TYPE_SPECIFIC_FIELD(thistype) \
946 TYPE_MAIN_TYPE(thistype)->type_specific_field
947 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
948 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
949 where we're trying to print an Ada array using the C language.
950 In that case, there is no "cplus_stuff", but the C language assumes
951 that there is. What we do, in that case, is pretend that there is
952 an implicit one which is the default cplus stuff. */
953 #define TYPE_CPLUS_SPECIFIC(thistype) \
954 (!HAVE_CPLUS_STRUCT(thistype) \
955 ? (struct cplus_struct_type*)&cplus_struct_default \
956 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
957 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
958 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
959 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
960 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
961 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.calling_convention
962 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
963 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
964 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
965 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
966 #define BASETYPE_VIA_PUBLIC(thistype, index) \
967 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
968 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
970 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
971 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
972 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
974 #define FIELD_TYPE(thisfld) ((thisfld).type)
975 #define FIELD_NAME(thisfld) ((thisfld).name)
976 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
977 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
978 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
979 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
980 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
981 #define SET_FIELD_BITPOS(thisfld, bitpos) \
982 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
983 FIELD_BITPOS (thisfld) = (bitpos))
984 #define SET_FIELD_PHYSNAME(thisfld, name) \
985 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
986 FIELD_STATIC_PHYSNAME (thisfld) = (name))
987 #define SET_FIELD_PHYSADDR(thisfld, addr) \
988 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
989 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
990 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
991 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
992 FIELD_DWARF_BLOCK (thisfld) = (addr))
993 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
994 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
996 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
997 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
998 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
999 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1000 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1001 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1002 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1003 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1004 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1005 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1006 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1007 #define TYPE_TEMPLATE_ARG(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->template_args[n]
1009 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1010 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1011 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1012 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1013 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1014 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1015 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1016 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1017 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1018 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1019 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1020 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1021 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1022 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1023 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1024 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1025 #define TYPE_FIELD_PRIVATE(thistype, n) \
1026 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1027 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1028 #define TYPE_FIELD_PROTECTED(thistype, n) \
1029 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1030 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1031 #define TYPE_FIELD_IGNORE(thistype, n) \
1032 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1033 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1034 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1035 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1036 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1038 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1039 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1040 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1041 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1042 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1044 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1045 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1046 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1047 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1048 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1049 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1050 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1051 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1052 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
1053 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
1054 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
1055 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
1056 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
1057 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1058 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
1059 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1060 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1061 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1062 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1063 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1065 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
1066 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
1067 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
1069 #define TYPE_IS_OPAQUE(thistype) (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) || \
1070 (TYPE_CODE (thistype) == TYPE_CODE_UNION)) && \
1071 (TYPE_NFIELDS (thistype) == 0) && \
1072 (HAVE_CPLUS_STRUCT (thistype) && (TYPE_NFN_FIELDS (thistype) == 0)) && \
1073 (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1077 /* Integral types. */
1079 /* Implicit size/sign (based on the the architecture's ABI). */
1080 struct type
*builtin_void
;
1081 struct type
*builtin_char
;
1082 struct type
*builtin_short
;
1083 struct type
*builtin_int
;
1084 struct type
*builtin_long
;
1085 struct type
*builtin_signed_char
;
1086 struct type
*builtin_unsigned_char
;
1087 struct type
*builtin_unsigned_short
;
1088 struct type
*builtin_unsigned_int
;
1089 struct type
*builtin_unsigned_long
;
1090 struct type
*builtin_float
;
1091 struct type
*builtin_double
;
1092 struct type
*builtin_long_double
;
1093 struct type
*builtin_complex
;
1094 struct type
*builtin_double_complex
;
1095 struct type
*builtin_string
;
1096 struct type
*builtin_bool
;
1097 struct type
*builtin_long_long
;
1098 struct type
*builtin_unsigned_long_long
;
1099 struct type
*builtin_decfloat
;
1100 struct type
*builtin_decdouble
;
1101 struct type
*builtin_declong
;
1103 /* "True" character types.
1104 We use these for the '/c' print format, because c_char is just a
1105 one-byte integral type, which languages less laid back than C
1106 will print as ... well, a one-byte integral type. */
1107 struct type
*builtin_true_char
;
1108 struct type
*builtin_true_unsigned_char
;
1110 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1111 is for when an architecture needs to describe a register that has
1113 struct type
*builtin_int0
;
1114 struct type
*builtin_int8
;
1115 struct type
*builtin_uint8
;
1116 struct type
*builtin_int16
;
1117 struct type
*builtin_uint16
;
1118 struct type
*builtin_int32
;
1119 struct type
*builtin_uint32
;
1120 struct type
*builtin_int64
;
1121 struct type
*builtin_uint64
;
1122 struct type
*builtin_int128
;
1123 struct type
*builtin_uint128
;
1126 /* Pointer types. */
1128 /* `pointer to data' type. Some target platforms use an implicitly
1129 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1130 struct type
*builtin_data_ptr
;
1132 /* `pointer to function (returning void)' type. Harvard
1133 architectures mean that ABI function and code pointers are not
1134 interconvertible. Similarly, since ANSI, C standards have
1135 explicitly said that pointers to functions and pointers to data
1136 are not interconvertible --- that is, you can't cast a function
1137 pointer to void * and back, and expect to get the same value.
1138 However, all function pointer types are interconvertible, so void
1139 (*) () can server as a generic function pointer. */
1140 struct type
*builtin_func_ptr
;
1143 /* Special-purpose types. */
1145 /* This type is used to represent a GDB internal function. */
1146 struct type
*internal_fn
;
1149 /* Return the type table for the specified architecture. */
1150 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1153 /* Per-objfile types used by symbol readers. */
1157 /* Basic types based on the objfile architecture. */
1158 struct type
*builtin_void
;
1159 struct type
*builtin_char
;
1160 struct type
*builtin_short
;
1161 struct type
*builtin_int
;
1162 struct type
*builtin_long
;
1163 struct type
*builtin_long_long
;
1164 struct type
*builtin_signed_char
;
1165 struct type
*builtin_unsigned_char
;
1166 struct type
*builtin_unsigned_short
;
1167 struct type
*builtin_unsigned_int
;
1168 struct type
*builtin_unsigned_long
;
1169 struct type
*builtin_unsigned_long_long
;
1170 struct type
*builtin_float
;
1171 struct type
*builtin_double
;
1172 struct type
*builtin_long_double
;
1174 /* This type is used to represent symbol addresses. */
1175 struct type
*builtin_core_addr
;
1177 /* This type represents a type that was unrecognized in symbol read-in. */
1178 struct type
*builtin_error
;
1180 /* Types used for symbols with no debug information. */
1181 struct type
*nodebug_text_symbol
;
1182 struct type
*nodebug_data_symbol
;
1183 struct type
*nodebug_unknown_symbol
;
1184 struct type
*nodebug_tls_symbol
;
1187 /* Return the type table for the specified objfile. */
1188 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1191 /* Explicit floating-point formats. See "floatformat.h". */
1192 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1193 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1194 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1195 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1196 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1197 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1198 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1199 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1200 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1201 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1202 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1205 /* Maximum and minimum values of built-in types */
1207 #define MAX_OF_TYPE(t) \
1208 (TYPE_UNSIGNED(t) ? UMAX_OF_SIZE(TYPE_LENGTH(t)) \
1209 : MAX_OF_SIZE(TYPE_LENGTH(t)))
1211 #define MIN_OF_TYPE(t) \
1212 (TYPE_UNSIGNED(t) ? UMIN_OF_SIZE(TYPE_LENGTH(t)) \
1213 : MIN_OF_SIZE(TYPE_LENGTH(t)))
1215 /* Allocate space for storing data associated with a particular type.
1216 We ensure that the space is allocated using the same mechanism that
1217 was used to allocate the space for the type structure itself. I.E.
1218 if the type is on an objfile's objfile_obstack, then the space for data
1219 associated with that type will also be allocated on the objfile_obstack.
1220 If the type is not associated with any particular objfile (such as
1221 builtin types), then the data space will be allocated with xmalloc,
1222 the same as for the type structure. */
1224 #define TYPE_ALLOC(t,size) \
1225 (TYPE_OBJFILE_OWNED (t) \
1226 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
1229 #define TYPE_ZALLOC(t,size) \
1230 (TYPE_OBJFILE_OWNED (t) \
1231 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \
1235 /* Use alloc_type to allocate a type owned by an objfile.
1236 Use alloc_type_arch to allocate a type owned by an architecture.
1237 Use alloc_type_copy to allocate a type with the same owner as a
1238 pre-existing template type, no matter whether objfile or gdbarch. */
1239 extern struct type
*alloc_type (struct objfile
*);
1240 extern struct type
*alloc_type_arch (struct gdbarch
*);
1241 extern struct type
*alloc_type_copy (const struct type
*);
1243 /* Return the type's architecture. For types owned by an architecture,
1244 that architecture is returned. For types owned by an objfile, that
1245 objfile's architecture is returned. */
1246 extern struct gdbarch
*get_type_arch (const struct type
*);
1248 /* Helper function to construct objfile-owned types. */
1249 extern struct type
*init_type (enum type_code
, int, int, char *,
1252 /* Helper functions to construct architecture-owned types. */
1253 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int, char *);
1254 extern struct type
*arch_integer_type (struct gdbarch
*, int, int, char *);
1255 extern struct type
*arch_character_type (struct gdbarch
*, int, int, char *);
1256 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int, char *);
1257 extern struct type
*arch_float_type (struct gdbarch
*, int, char *,
1258 const struct floatformat
**);
1259 extern struct type
*arch_complex_type (struct gdbarch
*, char *,
1262 /* Helper functions to construct a struct or record type. An
1263 initially empty type is created using arch_composite_type().
1264 Fields are then added using append_composite_type_field*(). A union
1265 type has its size set to the largest field. A struct type has each
1266 field packed against the previous. */
1268 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1269 char *name
, enum type_code code
);
1270 extern void append_composite_type_field (struct type
*t
, char *name
,
1271 struct type
*field
);
1272 extern void append_composite_type_field_aligned (struct type
*t
,
1277 /* Helper functions to construct a bit flags type. An initially empty
1278 type is created using arch_flag_type(). Flags are then added using
1279 append_flag_type_flag(). */
1280 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1281 char *name
, int length
);
1282 extern void append_flags_type_flag (struct type
*type
, int bitpos
, char *name
);
1284 extern void make_vector_type (struct type
*array_type
);
1285 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
1287 extern struct type
*lookup_reference_type (struct type
*);
1289 extern struct type
*make_reference_type (struct type
*, struct type
**);
1291 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
1293 extern void replace_type (struct type
*, struct type
*);
1295 extern int address_space_name_to_int (struct gdbarch
*, char *);
1297 extern const char *address_space_int_to_name (struct gdbarch
*, int);
1299 extern struct type
*make_type_with_address_space (struct type
*type
,
1300 int space_identifier
);
1302 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
1304 extern struct type
*lookup_methodptr_type (struct type
*);
1306 extern void smash_to_method_type (struct type
*type
, struct type
*domain
,
1307 struct type
*to_type
, struct field
*args
,
1308 int nargs
, int varargs
);
1310 extern void smash_to_memberptr_type (struct type
*, struct type
*,
1313 extern void smash_to_methodptr_type (struct type
*, struct type
*);
1315 extern struct type
*allocate_stub_method (struct type
*);
1317 extern char *type_name_no_tag (const struct type
*);
1319 extern struct type
*lookup_struct_elt_type (struct type
*, char *, int);
1321 extern struct type
*make_pointer_type (struct type
*, struct type
**);
1323 extern struct type
*lookup_pointer_type (struct type
*);
1325 extern struct type
*make_function_type (struct type
*, struct type
**);
1327 extern struct type
*lookup_function_type (struct type
*);
1329 extern struct type
*create_range_type (struct type
*, struct type
*, LONGEST
,
1332 extern struct type
*create_array_type (struct type
*, struct type
*,
1334 extern struct type
*lookup_array_range_type (struct type
*, int, int);
1336 extern struct type
*create_string_type (struct type
*, struct type
*,
1338 extern struct type
*lookup_string_range_type (struct type
*, int, int);
1340 extern struct type
*create_set_type (struct type
*, struct type
*);
1342 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
1343 struct gdbarch
*,char *);
1345 extern struct type
*lookup_signed_typename (const struct language_defn
*,
1346 struct gdbarch
*,char *);
1348 extern struct type
*check_typedef (struct type
*);
1350 #define CHECK_TYPEDEF(TYPE) \
1352 (TYPE) = check_typedef (TYPE); \
1355 extern void check_stub_method_group (struct type
*, int);
1357 extern char *gdb_mangle_name (struct type
*, int, int);
1359 extern struct type
*lookup_typename (const struct language_defn
*,
1360 struct gdbarch
*, char *,
1361 struct block
*, int);
1363 extern struct type
*lookup_template_type (char *, struct type
*,
1366 extern int get_vptr_fieldno (struct type
*, struct type
**);
1368 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
1370 extern int class_types_same_p (const struct type
*, const struct type
*);
1372 extern int is_ancestor (struct type
*, struct type
*);
1374 extern int is_public_ancestor (struct type
*, struct type
*);
1376 extern int is_unique_ancestor (struct type
*, struct value
*);
1378 /* Overload resolution */
1380 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1382 /* Badness if parameter list length doesn't match arg list length */
1383 #define LENGTH_MISMATCH_BADNESS 100
1384 /* Dummy badness value for nonexistent parameter positions */
1385 #define TOO_FEW_PARAMS_BADNESS 100
1386 /* Badness if no conversion among types */
1387 #define INCOMPATIBLE_TYPE_BADNESS 100
1389 /* Badness of integral promotion */
1390 #define INTEGER_PROMOTION_BADNESS 1
1391 /* Badness of floating promotion */
1392 #define FLOAT_PROMOTION_BADNESS 1
1393 /* Badness of integral conversion */
1394 #define INTEGER_CONVERSION_BADNESS 2
1395 /* Badness of floating conversion */
1396 #define FLOAT_CONVERSION_BADNESS 2
1397 /* Badness of integer<->floating conversions */
1398 #define INT_FLOAT_CONVERSION_BADNESS 2
1399 /* Badness of converting to a boolean */
1400 #define BOOLEAN_CONVERSION_BADNESS 2
1401 /* Badness of pointer conversion */
1402 #define POINTER_CONVERSION_BADNESS 2
1403 /* Badness of conversion of pointer to void pointer */
1404 #define VOID_PTR_CONVERSION_BADNESS 2
1405 /* Badness of converting derived to base class */
1406 #define BASE_CONVERSION_BADNESS 2
1407 /* Badness of converting from non-reference to reference */
1408 #define REFERENCE_CONVERSION_BADNESS 2
1410 /* Non-standard conversions allowed by the debugger */
1411 /* Converting a pointer to an int is usually OK */
1412 #define NS_POINTER_CONVERSION_BADNESS 10
1415 extern int compare_badness (struct badness_vector
*, struct badness_vector
*);
1417 extern struct badness_vector
*rank_function (struct type
**, int,
1418 struct type
**, int);
1420 extern int rank_one_type (struct type
*, struct type
*);
1422 extern void recursive_dump_type (struct type
*, int);
1424 extern int field_is_static (struct field
*);
1428 extern void print_scalar_formatted (const void *, struct type
*,
1429 const struct value_print_options
*,
1430 int, struct ui_file
*);
1432 extern int can_dereference (struct type
*);
1434 extern int is_integral_type (struct type
*);
1436 extern void maintenance_print_type (char *, int);
1438 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
1440 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
1442 htab_t copied_types
);
1444 extern struct type
*copy_type (const struct type
*type
);
1446 #endif /* GDBTYPES_H */