1 /* Internal type definitions for GDB.
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
4 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011
5 Free Software Foundation, Inc.
7 Contributed by Cygnus Support, using pieces from other GDB modules.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #if !defined (GDBTYPES_H)
29 /* Forward declarations for prototypes. */
32 struct value_print_options
;
35 /* Some macros for char-based bitfields. */
37 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
38 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
39 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
40 #define B_TYPE unsigned char
41 #define B_BYTES(x) ( 1 + ((x)>>3) )
42 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
44 /* Different kinds of data types are distinguished by the `code' field. */
48 TYPE_CODE_UNDEF
, /* Not used; catches errors */
49 TYPE_CODE_PTR
, /* Pointer type */
51 /* Array type with lower & upper bounds.
53 Regardless of the language, GDB represents multidimensional
54 array types the way C does: as arrays of arrays. So an
55 instance of a GDB array type T can always be seen as a series
56 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
59 Row-major languages like C lay out multi-dimensional arrays so
60 that incrementing the rightmost index in a subscripting
61 expression results in the smallest change in the address of the
62 element referred to. Column-major languages like Fortran lay
63 them out so that incrementing the leftmost index results in the
66 This means that, in column-major languages, working our way
67 from type to target type corresponds to working through indices
68 from right to left, not left to right. */
71 TYPE_CODE_STRUCT
, /* C struct or Pascal record */
72 TYPE_CODE_UNION
, /* C union or Pascal variant part */
73 TYPE_CODE_ENUM
, /* Enumeration type */
74 TYPE_CODE_FLAGS
, /* Bit flags type */
75 TYPE_CODE_FUNC
, /* Function type */
76 TYPE_CODE_INT
, /* Integer type */
78 /* Floating type. This is *NOT* a complex type. Beware, there are parts
79 of GDB which bogusly assume that TYPE_CODE_FLT can mean complex. */
82 /* Void type. The length field specifies the length (probably always
83 one) which is used in pointer arithmetic involving pointers to
84 this type, but actually dereferencing such a pointer is invalid;
85 a void type has no length and no actual representation in memory
86 or registers. A pointer to a void type is a generic pointer. */
89 TYPE_CODE_SET
, /* Pascal sets */
90 TYPE_CODE_RANGE
, /* Range (integers within spec'd bounds). */
92 /* A string type which is like an array of character but prints
93 differently (at least for (the deleted) CHILL). It does not
94 contain a length field as Pascal strings (for many Pascals,
95 anyway) do; if we want to deal with such strings, we should use
99 /* String of bits; like TYPE_CODE_SET but prints differently (at
100 least for (the deleted) CHILL). */
103 /* Unknown type. The length field is valid if we were able to
104 deduce that much about the type, or 0 if we don't even know that. */
108 TYPE_CODE_METHOD
, /* Method type */
110 /* Pointer-to-member-function type. This describes how to access a
111 particular member function of a class (possibly a virtual
112 member function). The representation may vary between different
116 /* Pointer-to-member type. This is the offset within a class to some
117 particular data member. The only currently supported representation
118 uses an unbiased offset, with -1 representing NULL; this is used
119 by the Itanium C++ ABI (used by GCC on all platforms). */
122 TYPE_CODE_REF
, /* C++ Reference types */
124 TYPE_CODE_CHAR
, /* *real* character type */
126 /* Boolean type. 0 is false, 1 is true, and other values are non-boolean
127 (e.g. FORTRAN "logical" used as unsigned int). */
131 TYPE_CODE_COMPLEX
, /* Complex float */
135 TYPE_CODE_NAMESPACE
, /* C++ namespace. */
137 TYPE_CODE_DECFLOAT
, /* Decimal floating point. */
139 TYPE_CODE_MODULE
, /* Fortran module. */
141 /* Internal function type. */
142 TYPE_CODE_INTERNAL_FUNCTION
145 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
146 alias for TYPE_CODE_STRUCT. This is for DWARF, which has a distinct
147 "class" attribute. Perhaps we should actually have a separate TYPE_CODE
148 so that we can print "class" or "struct" depending on what the debug
149 info said. It's not clear we should bother. */
151 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
153 /* Some constants representing each bit field in the main_type. See
154 the bit-field-specific macros, below, for documentation of each
155 constant in this enum. These enum values are only used with
156 init_type. Note that the values are chosen not to conflict with
157 type_instance_flag_value; this lets init_type error-check its
162 TYPE_FLAG_UNSIGNED
= (1 << 7),
163 TYPE_FLAG_NOSIGN
= (1 << 8),
164 TYPE_FLAG_STUB
= (1 << 9),
165 TYPE_FLAG_TARGET_STUB
= (1 << 10),
166 TYPE_FLAG_STATIC
= (1 << 11),
167 TYPE_FLAG_PROTOTYPED
= (1 << 12),
168 TYPE_FLAG_INCOMPLETE
= (1 << 13),
169 TYPE_FLAG_VARARGS
= (1 << 14),
170 TYPE_FLAG_VECTOR
= (1 << 15),
171 TYPE_FLAG_FIXED_INSTANCE
= (1 << 16),
172 TYPE_FLAG_STUB_SUPPORTED
= (1 << 17),
173 TYPE_FLAG_GNU_IFUNC
= (1 << 18),
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),
190 TYPE_INSTANCE_FLAG_NOTTEXT
= (1 << 6),
193 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT, the
194 type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */
196 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
198 /* No sign for this type. In C++, "char", "signed char", and "unsigned
199 char" are distinct types; so we need an extra flag to indicate the
200 absence of a sign! */
202 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
204 /* This appears in a type's flags word if it is a stub type (e.g., if
205 someone referenced a type that wasn't defined in a source file
206 via (struct sir_not_appearing_in_this_film *)). */
208 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
210 /* The target type of this type is a stub type, and this type needs to
211 be updated if it gets un-stubbed in check_typedef.
212 Used for arrays and ranges, in which TYPE_LENGTH of the array/range
213 gets set based on the TYPE_LENGTH of the target type.
214 Also, set for TYPE_CODE_TYPEDEF. */
216 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
218 /* Static type. If this is set, the corresponding type had
220 Note: This may be unnecessary, since static data members
221 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
226 this for function calls in order to tell us if it's necessary to
227 coerce the args, or to just do the standard conversions. This is
228 used with a short field. */
230 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
232 /* This flag is used to indicate that processing for this type
235 (Mostly intended for HP platforms, where class methods, for
236 instance, can be encountered before their classes in the debug
237 info; the incomplete type has to be marked so that the class and
238 the method can be assigned correct types.) */
240 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
242 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
245 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
247 /* Identify a vector type. Gcc is handling this by adding an extra
248 attribute to the array type. We slurp that in as a new flag of a
249 type. This is used only in dwarf2read.c. */
250 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
252 /* The debugging formats (especially STABS) do not contain enough information
253 to represent all Ada types---especially those whose size depends on
254 dynamic quantities. Therefore, the GNAT Ada compiler includes
255 extra information in the form of additional type definitions
256 connected by naming conventions. This flag indicates that the
257 type is an ordinary (unencoded) GDB type that has been created from
258 the necessary run-time information, and does not need further
259 interpretation. Optionally marks ordinary, fixed-size GDB type. */
261 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
263 /* This debug target supports TYPE_STUB(t). In the unsupported case we have to
264 rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE ().
265 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only guessed
266 the TYPE_STUB(t) value (see dwarfread.c). */
268 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
270 /* Not textual. By default, GDB treats all single byte integers as
271 characters (or elements of strings) unless this flag is set. */
273 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
275 /* Used only for TYPE_CODE_FUNC where it specifies the real function
276 address is returned by this function call. TYPE_TARGET_TYPE determines the
277 final returned function type to be presented to user. */
279 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
281 /* Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
282 the objfile retrieved as TYPE_OBJFILE. Otherweise, the type is
283 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
285 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
286 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
287 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
289 /* True if this type was declared using the "class" keyword. This is
290 only valid for C++ structure types, and only used for displaying
291 the type. If false, the structure was declared as a "struct". */
293 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
295 /* Constant type. If this is set, the corresponding type has a
298 #define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST)
300 /* Volatile type. If this is set, the corresponding type has a
301 volatile modifier. */
303 #define TYPE_VOLATILE(t) \
304 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE)
306 /* Instruction-space delimited type. This is for Harvard architectures
307 which have separate instruction and data address spaces (and perhaps
310 GDB usually defines a flat address space that is a superset of the
311 architecture's two (or more) address spaces, but this is an extension
312 of the architecture's model.
314 If TYPE_FLAG_INST is set, an object of the corresponding type
315 resides in instruction memory, even if its address (in the extended
316 flat address space) does not reflect this.
318 Similarly, if TYPE_FLAG_DATA is set, then an object of the
319 corresponding type resides in the data memory space, even if
320 this is not indicated by its (flat address space) address.
322 If neither flag is set, the default space for functions / methods
323 is instruction space, and for data objects is data memory. */
325 #define TYPE_CODE_SPACE(t) \
326 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE)
328 #define TYPE_DATA_SPACE(t) \
329 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE)
331 /* Address class flags. Some environments provide for pointers whose
332 size is different from that of a normal pointer or address types
333 where the bits are interpreted differently than normal addresses. The
334 TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific
335 ways to represent these different types of address classes. */
336 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
337 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
338 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
339 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
340 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
341 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
342 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
343 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
345 /* Determine which field of the union main_type.fields[x].loc is used. */
349 FIELD_LOC_KIND_BITPOS
, /* bitpos */
350 FIELD_LOC_KIND_PHYSADDR
, /* physaddr */
351 FIELD_LOC_KIND_PHYSNAME
/* physname */
354 /* A discriminant to determine which field in the main_type.type_specific
355 union is being used, if any.
357 For types such as TYPE_CODE_FLT or TYPE_CODE_FUNC, the use of this
358 discriminant is really redundant, as we know from the type code
359 which field is going to be used. As such, it would be possible to
360 reduce the size of this enum in order to save a bit or two for
361 other fields of struct main_type. But, since we still have extra
362 room , and for the sake of clarity and consistency, we treat all fields
363 of the union the same way. */
365 enum type_specific_kind
368 TYPE_SPECIFIC_CPLUS_STUFF
,
369 TYPE_SPECIFIC_GNAT_STUFF
,
370 TYPE_SPECIFIC_FLOATFORMAT
,
374 /* This structure is space-critical.
375 Its layout has been tweaked to reduce the space used. */
379 /* Code for kind of type. */
381 ENUM_BITFIELD(type_code
) code
: 8;
383 /* Flags about this type. These fields appear at this location
384 because they packs nicely here. See the TYPE_* macros for
385 documentation about these fields. */
387 unsigned int flag_unsigned
: 1;
388 unsigned int flag_nosign
: 1;
389 unsigned int flag_stub
: 1;
390 unsigned int flag_target_stub
: 1;
391 unsigned int flag_static
: 1;
392 unsigned int flag_prototyped
: 1;
393 unsigned int flag_incomplete
: 1;
394 unsigned int flag_varargs
: 1;
395 unsigned int flag_vector
: 1;
396 unsigned int flag_stub_supported
: 1;
397 unsigned int flag_gnu_ifunc
: 1;
398 unsigned int flag_fixed_instance
: 1;
399 unsigned int flag_objfile_owned
: 1;
400 /* True if this type was declared with "class" rather than
402 unsigned int flag_declared_class
: 1;
404 /* A discriminant telling us which field of the type_specific union
405 is being used for this type, if any. */
406 ENUM_BITFIELD(type_specific_kind
) type_specific_field
: 3;
408 /* Number of fields described for this type. This field appears at
409 this location because it packs nicely here. */
413 /* Field number of the virtual function table pointer in
414 VPTR_BASETYPE. If -1, we were unable to find the virtual
415 function table pointer in initial symbol reading, and
416 get_vptr_fieldno should be called to find it if possible.
417 get_vptr_fieldno will update this field if possible.
418 Otherwise the value is left at -1.
420 Unused if this type does not have virtual functions.
422 This field appears at this location because it packs nicely here. */
426 /* Name of this type, or NULL if none.
428 This is used for printing only, except by poorly designed C++ code.
429 For looking up a name, look for a symbol in the VAR_DOMAIN. */
433 /* Tag name for this type, or NULL if none. This means that the
434 name of the type consists of a keyword followed by the tag name.
435 Which keyword is determined by the type code ("struct" for
436 TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages
439 This is used for printing only, except by poorly designed C++ code.
440 For looking up a name, look for a symbol in the STRUCT_DOMAIN.
441 One more legitimate use is that if TYPE_FLAG_STUB is set, this is
442 the name to use to look for definitions in other files. */
446 /* Every type is now associated with a particular objfile, and the
447 type is allocated on the objfile_obstack for that objfile. One problem
448 however, is that there are times when gdb allocates new types while
449 it is not in the process of reading symbols from a particular objfile.
450 Fortunately, these happen when the type being created is a derived
451 type of an existing type, such as in lookup_pointer_type(). So
452 we can just allocate the new type using the same objfile as the
453 existing type, but to do this we need a backpointer to the objfile
454 from the existing type. Yes this is somewhat ugly, but without
455 major overhaul of the internal type system, it can't be avoided
460 struct objfile
*objfile
;
461 struct gdbarch
*gdbarch
;
464 /* For a pointer type, describes the type of object pointed to.
465 For an array type, describes the type of the elements.
466 For a function or method type, describes the type of the return value.
467 For a range type, describes the type of the full range.
468 For a complex type, describes the type of each coordinate.
469 For a special record or union type encoding a dynamic-sized type
470 in GNAT, a memoized pointer to a corresponding static version of
474 struct type
*target_type
;
476 /* For structure and union types, a description of each field.
477 For set and pascal array types, there is one "field",
478 whose type is the domain type of the set or array.
479 For range types, there are two "fields",
480 the minimum and maximum values (both inclusive).
481 For enum types, each possible value is described by one "field".
482 For a function or method type, a "field" for each parameter.
483 For C++ classes, there is one field for each base class (if it is
484 a derived class) plus one field for each class data member. Member
485 functions are recorded elsewhere.
487 Using a pointer to a separate array of fields
488 allows all types to have the same size, which is useful
489 because we can allocate the space for a type before
490 we know what to put in it. */
498 /* Position of this field, counting in bits from start of
499 containing structure. For gdbarch_bits_big_endian=1
500 targets, it is the bit offset to the MSB. For
501 gdbarch_bits_big_endian=0 targets, it is the bit offset to
502 the LSB. For a range bound or enum value, this is the
507 /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr
508 is the location (in the target) of the static field.
509 Otherwise, physname is the mangled label of the static field. */
512 const char *physname
;
516 /* For a function or member type, this is 1 if the argument is marked
517 artificial. Artificial arguments should not be shown to the
518 user. For TYPE_CODE_RANGE it is set if the specific bound is not
520 unsigned int artificial
: 1;
522 /* Discriminant for union field_location. */
523 ENUM_BITFIELD(field_loc_kind
) loc_kind
: 2;
525 /* Size of this field, in bits, or zero if not packed.
526 If non-zero in an array type, indicates the element size in
527 bits (used only in Ada at the moment).
528 For an unpacked field, the field's type's length
529 says how many bytes the field occupies. */
531 unsigned int bitsize
: 29;
533 /* In a struct or union type, type of this field.
534 In a function or member type, type of this argument.
535 In an array type, the domain-type of the array. */
539 /* Name of field, value or argument.
540 NULL for range bounds, array domains, and member function
546 /* Union member used for range types. */
550 /* Low bound of range. */
554 /* High bound of range. */
558 /* Flags indicating whether the values of low and high are
559 valid. When true, the respective range value is
560 undefined. Currently used only for FORTRAN arrays. */
569 /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE
570 is the base class which defined the virtual function table pointer.
572 For types that are pointer to member types (TYPE_CODE_METHODPTR,
573 TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer
576 For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
577 type that contains the method.
581 struct type
*vptr_basetype
;
583 /* Slot to point to additional language-specific fields of this type. */
587 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to
588 cplus_struct_default, a default static instance of a struct
589 cplus_struct_type. */
591 struct cplus_struct_type
*cplus_stuff
;
593 /* GNAT_STUFF is for types for which the GNAT Ada compiler
594 provides additional information. */
595 struct gnat_aux_type
*gnat_stuff
;
597 /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two
598 floatformat objects that describe the floating-point value
599 that resides within the type. The first is for big endian
600 targets and the second is for little endian targets. */
602 const struct floatformat
**floatformat
;
604 /* For TYPE_CODE_FUNC types, */
605 struct func_type
*func_stuff
;
609 /* A ``struct type'' describes a particular instance of a type, with
610 some particular qualification. */
613 /* Type that is a pointer to this type.
614 NULL if no such pointer-to type is known yet.
615 The debugger may add the address of such a type
616 if it has to construct one later. */
618 struct type
*pointer_type
;
620 /* C++: also need a reference type. */
622 struct type
*reference_type
;
624 /* Variant chain. This points to a type that differs from this one only
625 in qualifiers and length. Currently, the possible qualifiers are
626 const, volatile, code-space, data-space, and address class. The
627 length may differ only when one of the address class flags are set.
628 The variants are linked in a circular ring and share MAIN_TYPE. */
631 /* Flags specific to this instance of the type, indicating where
634 For TYPE_CODE_TYPEDEF the flags of the typedef type should be binary
635 or-ed with the target type, with a special case for address class and
636 space class. For example if this typedef does not specify any new
637 qualifiers, TYPE_INSTANCE_FLAGS is 0 and the instance flags are
638 completely inherited from the target type. No qualifiers can be cleared
639 by the typedef. See also check_typedef. */
642 /* Length of storage for a value of this type. This is what
643 sizeof(type) would return; use it for address arithmetic,
644 memory reads and writes, etc. This size includes padding. For
645 example, an i386 extended-precision floating point value really
646 only occupies ten bytes, but most ABI's declare its size to be
647 12 bytes, to preserve alignment. A `struct type' representing
648 such a floating-point type would have a `length' value of 12,
649 even though the last two bytes are unused.
651 There's a bit of a host/target mess here, if you're concerned
652 about machines whose bytes aren't eight bits long, or who don't
653 have byte-addressed memory. Various places pass this to memcpy
654 and such, meaning it must be in units of host bytes. Various
655 other places expect they can calculate addresses by adding it
656 and such, meaning it must be in units of target bytes. For
657 some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
658 and TARGET_CHAR_BIT will be (say) 32, this is a problem.
660 One fix would be to make this field in bits (requiring that it
661 always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
662 the other choice would be to make it consistently in units of
663 HOST_CHAR_BIT. However, this would still fail to address
664 machines based on a ternary or decimal representation. */
668 /* Core type, shared by a group of qualified types. */
669 struct main_type
*main_type
;
672 #define NULL_TYPE ((struct type *) 0)
674 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
677 struct cplus_struct_type
679 /* Number of base classes this type derives from. The baseclasses are
680 stored in the first N_BASECLASSES fields (i.e. the `fields' field of
681 the struct type). I think only the `type' field of such a field has
686 /* Number of methods with unique names. All overloaded methods with
687 the same name count only once. */
691 /* Number of methods described for this type, not including the
692 methods that it derives from. */
694 short nfn_fields_total
;
696 /* Number of template arguments. */
697 unsigned short n_template_arguments
;
699 /* One if this struct is a dynamic class, as defined by the
700 Itanium C++ ABI: if it requires a virtual table pointer,
701 because it or any of its base classes have one or more virtual
702 member functions or virtual base classes. Minus one if not
703 dynamic. Zero if not yet computed. */
706 /* Non-zero if this type came from a Java CU. */
707 unsigned int is_java
: 1;
709 /* For derived classes, the number of base classes is given by
710 n_baseclasses and virtual_field_bits is a bit vector containing
711 one bit per base class. If the base class is virtual, the
712 corresponding bit will be set.
717 class C : public B, public virtual A {};
719 B is a baseclass of C; A is a virtual baseclass for C.
720 This is a C++ 2.0 language feature. */
722 B_TYPE
*virtual_field_bits
;
724 /* For classes with private fields, the number of fields is given by
725 nfields and private_field_bits is a bit vector containing one bit
727 If the field is private, the corresponding bit will be set. */
729 B_TYPE
*private_field_bits
;
731 /* For classes with protected fields, the number of fields is given by
732 nfields and protected_field_bits is a bit vector containing one bit
734 If the field is private, the corresponding bit will be set. */
736 B_TYPE
*protected_field_bits
;
738 /* For classes with fields to be ignored, either this is optimized out
739 or this field has length 0. */
741 B_TYPE
*ignore_field_bits
;
743 /* For classes, structures, and unions, a description of each field,
744 which consists of an overloaded name, followed by the types of
745 arguments that the method expects, and then the name after it
746 has been renamed to make it distinct.
748 fn_fieldlists points to an array of nfn_fields of these. */
753 /* The overloaded name. */
757 /* The number of methods with this name. */
761 /* The list of methods. */
766 /* If is_stub is clear, this is the mangled name which we can
767 look up to find the address of the method (FIXME: it would
768 be cleaner to have a pointer to the struct symbol here
771 /* If is_stub is set, this is the portion of the mangled
772 name which specifies the arguments. For example, "ii",
773 if there are two int arguments, or "" if there are no
774 arguments. See gdb_mangle_name for the conversion from this
775 format to the one used if is_stub is clear. */
777 const char *physname
;
779 /* The function type for the method.
780 (This comment used to say "The return value of the method",
781 but that's wrong. The function type
782 is expected here, i.e. something with TYPE_CODE_FUNC,
783 and *not* the return-value type). */
787 /* For virtual functions.
788 First baseclass that defines this virtual function. */
790 struct type
*fcontext
;
794 unsigned int is_const
:1;
795 unsigned int is_volatile
:1;
796 unsigned int is_private
:1;
797 unsigned int is_protected
:1;
798 unsigned int is_public
:1;
799 unsigned int is_abstract
:1;
800 unsigned int is_static
:1;
801 unsigned int is_final
:1;
802 unsigned int is_synchronized
:1;
803 unsigned int is_native
:1;
804 unsigned int is_artificial
:1;
806 /* A stub method only has some fields valid (but they are enough
807 to reconstruct the rest of the fields). */
808 unsigned int is_stub
:1;
811 unsigned int dummy
:4;
813 /* Index into that baseclass's virtual function table,
814 minus 2; else if static: VOFFSET_STATIC; else: 0. */
816 unsigned int voffset
:16;
818 #define VOFFSET_STATIC 1
826 /* Pointer to information about enclosing scope, if this is a
827 local type. If it is not a local type, this is NULL. */
828 struct local_type_info
835 /* typedefs defined inside this class. TYPEDEF_FIELD points to an array of
836 TYPEDEF_FIELD_COUNT elements. */
839 /* Unqualified name to be prefixed by owning class qualified name. */
842 /* Type this typedef named NAME represents. */
846 unsigned typedef_field_count
;
848 /* The template arguments. This is an array with
849 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
851 struct symbol
**template_arguments
;
854 /* Struct used in computing virtual base list. */
857 struct type
*vbasetype
; /* pointer to virtual base */
858 struct vbase
*next
; /* next in chain */
861 /* Struct used to store conversion rankings. */
866 /* When two conversions are of the same type and therefore have the same
867 rank, subrank is used to differentiate the two.
868 Eg: Two derived-class-pointer to base-class-pointer conversions would
869 both have base pointer conversion rank, but the conversion with the
870 shorter distance to the ancestor is preferable. 'subrank' would be used
875 /* Struct used for ranking a function for overload resolution. */
876 struct badness_vector
882 /* GNAT Ada-specific information for various Ada types. */
885 /* Parallel type used to encode information about dynamic types
886 used in Ada (such as variant records, variable-size array,
888 struct type
* descriptive_type
;
891 /* For TYPE_CODE_FUNC types, */
894 /* The calling convention for targets supporting multiple ABIs. Right now
895 this is only fetched from the Dwarf-2 DW_AT_calling_convention
897 unsigned calling_convention
;
900 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
901 this shared static structure. */
903 extern const struct cplus_struct_type cplus_struct_default
;
905 extern void allocate_cplus_struct_type (struct type
*);
907 #define INIT_CPLUS_SPECIFIC(type) \
908 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
909 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
910 &cplus_struct_default)
912 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
914 #define HAVE_CPLUS_STRUCT(type) \
915 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
916 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
918 extern const struct gnat_aux_type gnat_aux_default
;
920 extern void allocate_gnat_aux_type (struct type
*);
922 #define INIT_GNAT_SPECIFIC(type) \
923 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
924 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
925 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
926 /* A macro that returns non-zero if the type-specific data should be
927 read as "gnat-stuff". */
928 #define HAVE_GNAT_AUX_INFO(type) \
929 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
931 #define INIT_FUNC_SPECIFIC(type) \
932 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
933 TYPE_MAIN_TYPE (type)->type_specific.func_stuff \
934 = TYPE_ZALLOC (type, \
935 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
937 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
938 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
939 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
940 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
941 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
942 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
943 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
944 #define TYPE_CHAIN(thistype) (thistype)->chain
945 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
946 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
947 so you only have to call check_typedef once. Since allocate_value
948 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
949 #define TYPE_LENGTH(thistype) (thistype)->length
950 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
951 type, you need to do TYPE_CODE (check_type (this_type)). */
952 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
953 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
954 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
956 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
957 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
958 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low
959 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high
960 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
961 TYPE_RANGE_DATA(range_type)->low_undefined
962 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
963 TYPE_RANGE_DATA(range_type)->high_undefined
965 /* Moto-specific stuff for FORTRAN arrays. */
967 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
968 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
969 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
970 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
972 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
973 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
975 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
976 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
980 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
981 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
982 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
983 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
984 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
985 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
986 #define TYPE_SPECIFIC_FIELD(thistype) \
987 TYPE_MAIN_TYPE(thistype)->type_specific_field
988 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
989 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
990 where we're trying to print an Ada array using the C language.
991 In that case, there is no "cplus_stuff", but the C language assumes
992 that there is. What we do, in that case, is pretend that there is
993 an implicit one which is the default cplus stuff. */
994 #define TYPE_CPLUS_SPECIFIC(thistype) \
995 (!HAVE_CPLUS_STRUCT(thistype) \
996 ? (struct cplus_struct_type*)&cplus_struct_default \
997 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
998 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
999 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1000 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1001 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1002 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1003 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1004 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1005 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1006 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1007 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1008 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1009 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1010 #define TYPE_CPLUS_REALLY_JAVA(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_java
1012 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1013 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1014 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1016 #define FIELD_TYPE(thisfld) ((thisfld).type)
1017 #define FIELD_NAME(thisfld) ((thisfld).name)
1018 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1019 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
1020 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1021 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1022 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1023 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1024 FIELD_BITPOS (thisfld) = (bitpos))
1025 #define SET_FIELD_PHYSNAME(thisfld, name) \
1026 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1027 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1028 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1029 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1030 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1031 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1032 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1034 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1035 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1036 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1037 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1038 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1039 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1040 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1041 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1042 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1043 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1045 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1046 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1047 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1048 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1049 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1050 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1051 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1052 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1053 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1054 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1055 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1056 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1057 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1058 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1059 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1060 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1061 #define TYPE_FIELD_PRIVATE(thistype, n) \
1062 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1063 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1064 #define TYPE_FIELD_PROTECTED(thistype, n) \
1065 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1066 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1067 #define TYPE_FIELD_IGNORE(thistype, n) \
1068 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1069 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1070 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1071 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1072 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1074 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1075 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1076 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1077 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1078 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1080 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1081 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1082 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1083 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1084 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1085 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1087 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1088 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1089 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1090 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1091 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1092 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1093 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1094 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1095 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
1096 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
1097 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
1098 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
1099 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
1100 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1101 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
1102 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1103 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1104 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1105 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1106 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1108 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
1109 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
1110 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
1112 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1113 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1114 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1115 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1116 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1117 TYPE_TYPEDEF_FIELD (thistype, n).name
1118 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1119 TYPE_TYPEDEF_FIELD (thistype, n).type
1120 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1121 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1123 #define TYPE_IS_OPAQUE(thistype) \
1124 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1125 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1126 && (TYPE_NFIELDS (thistype) == 0) \
1127 && (!HAVE_CPLUS_STRUCT (thistype) \
1128 || TYPE_NFN_FIELDS (thistype) == 0) \
1129 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1131 /* A helper macro that returns the name of an error type. If the type
1132 has a name, it is used; otherwise, a default is used. */
1133 #define TYPE_ERROR_NAME(type) \
1134 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1138 /* Integral types. */
1140 /* Implicit size/sign (based on the architecture's ABI). */
1141 struct type
*builtin_void
;
1142 struct type
*builtin_char
;
1143 struct type
*builtin_short
;
1144 struct type
*builtin_int
;
1145 struct type
*builtin_long
;
1146 struct type
*builtin_signed_char
;
1147 struct type
*builtin_unsigned_char
;
1148 struct type
*builtin_unsigned_short
;
1149 struct type
*builtin_unsigned_int
;
1150 struct type
*builtin_unsigned_long
;
1151 struct type
*builtin_float
;
1152 struct type
*builtin_double
;
1153 struct type
*builtin_long_double
;
1154 struct type
*builtin_complex
;
1155 struct type
*builtin_double_complex
;
1156 struct type
*builtin_string
;
1157 struct type
*builtin_bool
;
1158 struct type
*builtin_long_long
;
1159 struct type
*builtin_unsigned_long_long
;
1160 struct type
*builtin_decfloat
;
1161 struct type
*builtin_decdouble
;
1162 struct type
*builtin_declong
;
1164 /* "True" character types.
1165 We use these for the '/c' print format, because c_char is just a
1166 one-byte integral type, which languages less laid back than C
1167 will print as ... well, a one-byte integral type. */
1168 struct type
*builtin_true_char
;
1169 struct type
*builtin_true_unsigned_char
;
1171 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1172 is for when an architecture needs to describe a register that has
1174 struct type
*builtin_int0
;
1175 struct type
*builtin_int8
;
1176 struct type
*builtin_uint8
;
1177 struct type
*builtin_int16
;
1178 struct type
*builtin_uint16
;
1179 struct type
*builtin_int32
;
1180 struct type
*builtin_uint32
;
1181 struct type
*builtin_int64
;
1182 struct type
*builtin_uint64
;
1183 struct type
*builtin_int128
;
1184 struct type
*builtin_uint128
;
1186 /* Wide character types. */
1187 struct type
*builtin_char16
;
1188 struct type
*builtin_char32
;
1190 /* Pointer types. */
1192 /* `pointer to data' type. Some target platforms use an implicitly
1193 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1194 struct type
*builtin_data_ptr
;
1196 /* `pointer to function (returning void)' type. Harvard
1197 architectures mean that ABI function and code pointers are not
1198 interconvertible. Similarly, since ANSI, C standards have
1199 explicitly said that pointers to functions and pointers to data
1200 are not interconvertible --- that is, you can't cast a function
1201 pointer to void * and back, and expect to get the same value.
1202 However, all function pointer types are interconvertible, so void
1203 (*) () can server as a generic function pointer. */
1204 struct type
*builtin_func_ptr
;
1206 /* `function returning pointer to function (returning void)' type.
1207 The final void return type is not significant for it. */
1208 struct type
*builtin_func_func
;
1211 /* Special-purpose types. */
1213 /* This type is used to represent a GDB internal function. */
1214 struct type
*internal_fn
;
1217 /* Return the type table for the specified architecture. */
1218 extern const struct builtin_type
*builtin_type (struct gdbarch
*gdbarch
);
1221 /* Per-objfile types used by symbol readers. */
1225 /* Basic types based on the objfile architecture. */
1226 struct type
*builtin_void
;
1227 struct type
*builtin_char
;
1228 struct type
*builtin_short
;
1229 struct type
*builtin_int
;
1230 struct type
*builtin_long
;
1231 struct type
*builtin_long_long
;
1232 struct type
*builtin_signed_char
;
1233 struct type
*builtin_unsigned_char
;
1234 struct type
*builtin_unsigned_short
;
1235 struct type
*builtin_unsigned_int
;
1236 struct type
*builtin_unsigned_long
;
1237 struct type
*builtin_unsigned_long_long
;
1238 struct type
*builtin_float
;
1239 struct type
*builtin_double
;
1240 struct type
*builtin_long_double
;
1242 /* This type is used to represent symbol addresses. */
1243 struct type
*builtin_core_addr
;
1245 /* This type represents a type that was unrecognized in symbol read-in. */
1246 struct type
*builtin_error
;
1248 /* Types used for symbols with no debug information. */
1249 struct type
*nodebug_text_symbol
;
1250 struct type
*nodebug_text_gnu_ifunc_symbol
;
1251 struct type
*nodebug_got_plt_symbol
;
1252 struct type
*nodebug_data_symbol
;
1253 struct type
*nodebug_unknown_symbol
;
1254 struct type
*nodebug_tls_symbol
;
1257 /* Return the type table for the specified objfile. */
1258 extern const struct objfile_type
*objfile_type (struct objfile
*objfile
);
1261 /* Explicit floating-point formats. See "floatformat.h". */
1262 extern const struct floatformat
*floatformats_ieee_half
[BFD_ENDIAN_UNKNOWN
];
1263 extern const struct floatformat
*floatformats_ieee_single
[BFD_ENDIAN_UNKNOWN
];
1264 extern const struct floatformat
*floatformats_ieee_double
[BFD_ENDIAN_UNKNOWN
];
1265 extern const struct floatformat
*floatformats_ieee_double_littlebyte_bigword
[BFD_ENDIAN_UNKNOWN
];
1266 extern const struct floatformat
*floatformats_i387_ext
[BFD_ENDIAN_UNKNOWN
];
1267 extern const struct floatformat
*floatformats_m68881_ext
[BFD_ENDIAN_UNKNOWN
];
1268 extern const struct floatformat
*floatformats_arm_ext
[BFD_ENDIAN_UNKNOWN
];
1269 extern const struct floatformat
*floatformats_ia64_spill
[BFD_ENDIAN_UNKNOWN
];
1270 extern const struct floatformat
*floatformats_ia64_quad
[BFD_ENDIAN_UNKNOWN
];
1271 extern const struct floatformat
*floatformats_vax_f
[BFD_ENDIAN_UNKNOWN
];
1272 extern const struct floatformat
*floatformats_vax_d
[BFD_ENDIAN_UNKNOWN
];
1273 extern const struct floatformat
*floatformats_ibm_long_double
[BFD_ENDIAN_UNKNOWN
];
1276 /* Allocate space for storing data associated with a particular type.
1277 We ensure that the space is allocated using the same mechanism that
1278 was used to allocate the space for the type structure itself. I.e.
1279 if the type is on an objfile's objfile_obstack, then the space for data
1280 associated with that type will also be allocated on the objfile_obstack.
1281 If the type is not associated with any particular objfile (such as
1282 builtin types), then the data space will be allocated with xmalloc,
1283 the same as for the type structure. */
1285 #define TYPE_ALLOC(t,size) \
1286 (TYPE_OBJFILE_OWNED (t) \
1287 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
1290 #define TYPE_ZALLOC(t,size) \
1291 (TYPE_OBJFILE_OWNED (t) \
1292 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \
1296 /* Use alloc_type to allocate a type owned by an objfile.
1297 Use alloc_type_arch to allocate a type owned by an architecture.
1298 Use alloc_type_copy to allocate a type with the same owner as a
1299 pre-existing template type, no matter whether objfile or gdbarch. */
1300 extern struct type
*alloc_type (struct objfile
*);
1301 extern struct type
*alloc_type_arch (struct gdbarch
*);
1302 extern struct type
*alloc_type_copy (const struct type
*);
1304 /* Return the type's architecture. For types owned by an architecture,
1305 that architecture is returned. For types owned by an objfile, that
1306 objfile's architecture is returned. */
1307 extern struct gdbarch
*get_type_arch (const struct type
*);
1309 /* Helper function to construct objfile-owned types. */
1310 extern struct type
*init_type (enum type_code
, int, int, char *,
1313 /* Helper functions to construct architecture-owned types. */
1314 extern struct type
*arch_type (struct gdbarch
*, enum type_code
, int, char *);
1315 extern struct type
*arch_integer_type (struct gdbarch
*, int, int, char *);
1316 extern struct type
*arch_character_type (struct gdbarch
*, int, int, char *);
1317 extern struct type
*arch_boolean_type (struct gdbarch
*, int, int, char *);
1318 extern struct type
*arch_float_type (struct gdbarch
*, int, char *,
1319 const struct floatformat
**);
1320 extern struct type
*arch_complex_type (struct gdbarch
*, char *,
1323 /* Helper functions to construct a struct or record type. An
1324 initially empty type is created using arch_composite_type().
1325 Fields are then added using append_composite_type_field*(). A union
1326 type has its size set to the largest field. A struct type has each
1327 field packed against the previous. */
1329 extern struct type
*arch_composite_type (struct gdbarch
*gdbarch
,
1330 char *name
, enum type_code code
);
1331 extern void append_composite_type_field (struct type
*t
, char *name
,
1332 struct type
*field
);
1333 extern void append_composite_type_field_aligned (struct type
*t
,
1337 struct field
*append_composite_type_field_raw (struct type
*t
, char *name
,
1338 struct type
*field
);
1340 /* Helper functions to construct a bit flags type. An initially empty
1341 type is created using arch_flag_type(). Flags are then added using
1342 append_flag_type_flag(). */
1343 extern struct type
*arch_flags_type (struct gdbarch
*gdbarch
,
1344 char *name
, int length
);
1345 extern void append_flags_type_flag (struct type
*type
, int bitpos
, char *name
);
1347 extern void make_vector_type (struct type
*array_type
);
1348 extern struct type
*init_vector_type (struct type
*elt_type
, int n
);
1350 extern struct type
*lookup_reference_type (struct type
*);
1352 extern struct type
*make_reference_type (struct type
*, struct type
**);
1354 extern struct type
*make_cv_type (int, int, struct type
*, struct type
**);
1356 extern void replace_type (struct type
*, struct type
*);
1358 extern int address_space_name_to_int (struct gdbarch
*, char *);
1360 extern const char *address_space_int_to_name (struct gdbarch
*, int);
1362 extern struct type
*make_type_with_address_space (struct type
*type
,
1363 int space_identifier
);
1365 extern struct type
*lookup_memberptr_type (struct type
*, struct type
*);
1367 extern struct type
*lookup_methodptr_type (struct type
*);
1369 extern void smash_to_method_type (struct type
*type
, struct type
*domain
,
1370 struct type
*to_type
, struct field
*args
,
1371 int nargs
, int varargs
);
1373 extern void smash_to_memberptr_type (struct type
*, struct type
*,
1376 extern void smash_to_methodptr_type (struct type
*, struct type
*);
1378 extern struct type
*allocate_stub_method (struct type
*);
1380 extern char *type_name_no_tag (const struct type
*);
1382 extern const char *type_name_no_tag_or_error (struct type
*type
);
1384 extern struct type
*lookup_struct_elt_type (struct type
*, char *, int);
1386 extern struct type
*make_pointer_type (struct type
*, struct type
**);
1388 extern struct type
*lookup_pointer_type (struct type
*);
1390 extern struct type
*make_function_type (struct type
*, struct type
**);
1392 extern struct type
*lookup_function_type (struct type
*);
1394 extern struct type
*create_range_type (struct type
*, struct type
*, LONGEST
,
1397 extern struct type
*create_array_type (struct type
*, struct type
*,
1399 extern struct type
*lookup_array_range_type (struct type
*, int, int);
1401 extern struct type
*create_string_type (struct type
*, struct type
*,
1403 extern struct type
*lookup_string_range_type (struct type
*, int, int);
1405 extern struct type
*create_set_type (struct type
*, struct type
*);
1407 extern struct type
*lookup_unsigned_typename (const struct language_defn
*,
1408 struct gdbarch
*,char *);
1410 extern struct type
*lookup_signed_typename (const struct language_defn
*,
1411 struct gdbarch
*,char *);
1413 extern struct type
*check_typedef (struct type
*);
1415 #define CHECK_TYPEDEF(TYPE) \
1417 (TYPE) = check_typedef (TYPE); \
1420 extern void check_stub_method_group (struct type
*, int);
1422 extern char *gdb_mangle_name (struct type
*, int, int);
1424 extern struct type
*lookup_typename (const struct language_defn
*,
1425 struct gdbarch
*, const char *,
1426 const struct block
*, int);
1428 extern struct type
*lookup_template_type (char *, struct type
*,
1431 extern int get_vptr_fieldno (struct type
*, struct type
**);
1433 extern int get_discrete_bounds (struct type
*, LONGEST
*, LONGEST
*);
1435 extern int get_array_bounds (struct type
*type
, LONGEST
*low_bound
,
1436 LONGEST
*high_bound
);
1438 extern int class_types_same_p (const struct type
*, const struct type
*);
1440 extern int is_ancestor (struct type
*, struct type
*);
1442 extern int is_public_ancestor (struct type
*, struct type
*);
1444 extern int is_unique_ancestor (struct type
*, struct value
*);
1446 /* Overload resolution */
1448 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1450 /* Badness if parameter list length doesn't match arg list length. */
1451 extern const struct rank LENGTH_MISMATCH_BADNESS
;
1453 /* Dummy badness value for nonexistent parameter positions. */
1454 extern const struct rank TOO_FEW_PARAMS_BADNESS
;
1455 /* Badness if no conversion among types. */
1456 extern const struct rank INCOMPATIBLE_TYPE_BADNESS
;
1458 /* Badness of an exact match. */
1459 extern const struct rank EXACT_MATCH_BADNESS
;
1461 /* Badness of integral promotion. */
1462 extern const struct rank INTEGER_PROMOTION_BADNESS
;
1463 /* Badness of floating promotion. */
1464 extern const struct rank FLOAT_PROMOTION_BADNESS
;
1465 /* Badness of converting a derived class pointer
1466 to a base class pointer. */
1467 extern const struct rank BASE_PTR_CONVERSION_BADNESS
;
1468 /* Badness of integral conversion. */
1469 extern const struct rank INTEGER_CONVERSION_BADNESS
;
1470 /* Badness of floating conversion. */
1471 extern const struct rank FLOAT_CONVERSION_BADNESS
;
1472 /* Badness of integer<->floating conversions. */
1473 extern const struct rank INT_FLOAT_CONVERSION_BADNESS
;
1474 /* Badness of conversion of pointer to void pointer. */
1475 extern const struct rank VOID_PTR_CONVERSION_BADNESS
;
1476 /* Badness of conversion of pointer to boolean. */
1477 extern const struct rank BOOL_PTR_CONVERSION_BADNESS
;
1478 /* Badness of converting derived to base class. */
1479 extern const struct rank BASE_CONVERSION_BADNESS
;
1480 /* Badness of converting from non-reference to reference. */
1481 extern const struct rank REFERENCE_CONVERSION_BADNESS
;
1483 /* Non-standard conversions allowed by the debugger */
1484 /* Converting a pointer to an int is usually OK. */
1485 extern const struct rank NS_POINTER_CONVERSION_BADNESS
;
1488 extern struct rank
sum_ranks (struct rank a
, struct rank b
);
1489 extern int compare_ranks (struct rank a
, struct rank b
);
1491 extern int compare_badness (struct badness_vector
*, struct badness_vector
*);
1493 extern struct badness_vector
*rank_function (struct type
**, int,
1494 struct type
**, int);
1496 extern struct rank
rank_one_type (struct type
*, struct type
*);
1498 extern void recursive_dump_type (struct type
*, int);
1500 extern int field_is_static (struct field
*);
1504 extern void print_scalar_formatted (const void *, struct type
*,
1505 const struct value_print_options
*,
1506 int, struct ui_file
*);
1508 extern int can_dereference (struct type
*);
1510 extern int is_integral_type (struct type
*);
1512 extern int is_scalar_type_recursive (struct type
*);
1514 extern void maintenance_print_type (char *, int);
1516 extern htab_t
create_copied_types_hash (struct objfile
*objfile
);
1518 extern struct type
*copy_type_recursive (struct objfile
*objfile
,
1520 htab_t copied_types
);
1522 extern struct type
*copy_type (const struct type
*type
);
1524 #endif /* GDBTYPES_H */