1 /* Internal type definitions for GDB.
3 Copyright (C) 1992-2004, 2006-2012 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #if !defined (GDBTYPES_H)
27 /* Forward declarations for prototypes. */
30 struct value_print_options;
33 /* Some macros for char-based bitfields. */
35 #define B_SET(a,x) ((a)[(x)>>3] |= (1 << ((x)&7)))
36 #define B_CLR(a,x) ((a)[(x)>>3] &= ~(1 << ((x)&7)))
37 #define B_TST(a,x) ((a)[(x)>>3] & (1 << ((x)&7)))
38 #define B_TYPE unsigned char
39 #define B_BYTES(x) ( 1 + ((x)>>3) )
40 #define B_CLRALL(a,x) memset ((a), 0, B_BYTES(x))
42 /* Different kinds of data types are distinguished by the `code' field. */
46 TYPE_CODE_UNDEF, /* Not used; catches errors */
47 TYPE_CODE_PTR, /* Pointer type */
49 /* Array type with lower & upper bounds.
51 Regardless of the language, GDB represents multidimensional
52 array types the way C does: as arrays of arrays. So an
53 instance of a GDB array type T can always be seen as a series
54 of instances of TYPE_TARGET_TYPE (T) laid out sequentially in
57 Row-major languages like C lay out multi-dimensional arrays so
58 that incrementing the rightmost index in a subscripting
59 expression results in the smallest change in the address of the
60 element referred to. Column-major languages like Fortran lay
61 them out so that incrementing the leftmost index results in the
64 This means that, in column-major languages, working our way
65 from type to target type corresponds to working through indices
66 from right to left, not left to right. */
69 TYPE_CODE_STRUCT, /* C struct or Pascal record */
70 TYPE_CODE_UNION, /* C union or Pascal variant part */
71 TYPE_CODE_ENUM, /* Enumeration type */
72 TYPE_CODE_FLAGS, /* Bit flags type */
73 TYPE_CODE_FUNC, /* Function type */
74 TYPE_CODE_INT, /* Integer type */
76 /* Floating type. This is *NOT* a complex type. Beware, there are parts
77 of GDB which bogusly assume that TYPE_CODE_FLT can mean complex. */
80 /* Void type. The length field specifies the length (probably always
81 one) which is used in pointer arithmetic involving pointers to
82 this type, but actually dereferencing such a pointer is invalid;
83 a void type has no length and no actual representation in memory
84 or registers. A pointer to a void type is a generic pointer. */
87 TYPE_CODE_SET, /* Pascal sets */
88 TYPE_CODE_RANGE, /* Range (integers within spec'd bounds). */
90 /* A string type which is like an array of character but prints
91 differently (at least for (the deleted) CHILL). It does not
92 contain a length field as Pascal strings (for many Pascals,
93 anyway) do; if we want to deal with such strings, we should use
97 /* String of bits; like TYPE_CODE_SET but prints differently (at
98 least for (the deleted) CHILL). */
101 /* Unknown type. The length field is valid if we were able to
102 deduce that much about the type, or 0 if we don't even know that. */
106 TYPE_CODE_METHOD, /* Method type */
108 /* Pointer-to-member-function type. This describes how to access a
109 particular member function of a class (possibly a virtual
110 member function). The representation may vary between different
114 /* Pointer-to-member type. This is the offset within a class to some
115 particular data member. The only currently supported representation
116 uses an unbiased offset, with -1 representing NULL; this is used
117 by the Itanium C++ ABI (used by GCC on all platforms). */
120 TYPE_CODE_REF, /* C++ Reference types */
122 TYPE_CODE_CHAR, /* *real* character type */
124 /* Boolean type. 0 is false, 1 is true, and other values are non-boolean
125 (e.g. FORTRAN "logical" used as unsigned int). */
129 TYPE_CODE_COMPLEX, /* Complex float */
133 TYPE_CODE_NAMESPACE, /* C++ namespace. */
135 TYPE_CODE_DECFLOAT, /* Decimal floating point. */
137 TYPE_CODE_MODULE, /* Fortran module. */
139 /* Internal function type. */
140 TYPE_CODE_INTERNAL_FUNCTION
143 /* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an
144 alias for TYPE_CODE_STRUCT. This is for DWARF, which has a distinct
145 "class" attribute. Perhaps we should actually have a separate TYPE_CODE
146 so that we can print "class" or "struct" depending on what the debug
147 info said. It's not clear we should bother. */
149 #define TYPE_CODE_CLASS TYPE_CODE_STRUCT
151 /* Some constants representing each bit field in the main_type. See
152 the bit-field-specific macros, below, for documentation of each
153 constant in this enum. These enum values are only used with
154 init_type. Note that the values are chosen not to conflict with
155 type_instance_flag_value; this lets init_type error-check its
160 TYPE_FLAG_UNSIGNED = (1 << 7),
161 TYPE_FLAG_NOSIGN = (1 << 8),
162 TYPE_FLAG_STUB = (1 << 9),
163 TYPE_FLAG_TARGET_STUB = (1 << 10),
164 TYPE_FLAG_STATIC = (1 << 11),
165 TYPE_FLAG_PROTOTYPED = (1 << 12),
166 TYPE_FLAG_INCOMPLETE = (1 << 13),
167 TYPE_FLAG_VARARGS = (1 << 14),
168 TYPE_FLAG_VECTOR = (1 << 15),
169 TYPE_FLAG_FIXED_INSTANCE = (1 << 16),
170 TYPE_FLAG_STUB_SUPPORTED = (1 << 17),
171 TYPE_FLAG_GNU_IFUNC = (1 << 18),
173 /* Used for error-checking. */
174 TYPE_FLAG_MIN = TYPE_FLAG_UNSIGNED
177 /* Some bits for the type's instance_flags word. See the macros below
178 for documentation on each bit. Note that if you add a value here,
179 you must update the enum type_flag_value as well. */
180 enum type_instance_flag_value
182 TYPE_INSTANCE_FLAG_CONST = (1 << 0),
183 TYPE_INSTANCE_FLAG_VOLATILE = (1 << 1),
184 TYPE_INSTANCE_FLAG_CODE_SPACE = (1 << 2),
185 TYPE_INSTANCE_FLAG_DATA_SPACE = (1 << 3),
186 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 = (1 << 4),
187 TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2 = (1 << 5),
188 TYPE_INSTANCE_FLAG_NOTTEXT = (1 << 6),
191 /* Unsigned integer type. If this is not set for a TYPE_CODE_INT, the
192 type is signed (unless TYPE_FLAG_NOSIGN (below) is set). */
194 #define TYPE_UNSIGNED(t) (TYPE_MAIN_TYPE (t)->flag_unsigned)
196 /* No sign for this type. In C++, "char", "signed char", and "unsigned
197 char" are distinct types; so we need an extra flag to indicate the
198 absence of a sign! */
200 #define TYPE_NOSIGN(t) (TYPE_MAIN_TYPE (t)->flag_nosign)
202 /* This appears in a type's flags word if it is a stub type (e.g., if
203 someone referenced a type that wasn't defined in a source file
204 via (struct sir_not_appearing_in_this_film *)). */
206 #define TYPE_STUB(t) (TYPE_MAIN_TYPE (t)->flag_stub)
208 /* The target type of this type is a stub type, and this type needs to
209 be updated if it gets un-stubbed in check_typedef.
210 Used for arrays and ranges, in which TYPE_LENGTH of the array/range
211 gets set based on the TYPE_LENGTH of the target type.
212 Also, set for TYPE_CODE_TYPEDEF. */
214 #define TYPE_TARGET_STUB(t) (TYPE_MAIN_TYPE (t)->flag_target_stub)
216 /* Static type. If this is set, the corresponding type had
218 Note: This may be unnecessary, since static data members
219 are indicated by other means (bitpos == -1). */
221 #define TYPE_STATIC(t) (TYPE_MAIN_TYPE (t)->flag_static)
223 /* This is a function type which appears to have a prototype. We need
224 this for function calls in order to tell us if it's necessary to
225 coerce the args, or to just do the standard conversions. This is
226 used with a short field. */
228 #define TYPE_PROTOTYPED(t) (TYPE_MAIN_TYPE (t)->flag_prototyped)
230 /* This flag is used to indicate that processing for this type
233 (Mostly intended for HP platforms, where class methods, for
234 instance, can be encountered before their classes in the debug
235 info; the incomplete type has to be marked so that the class and
236 the method can be assigned correct types.) */
238 #define TYPE_INCOMPLETE(t) (TYPE_MAIN_TYPE (t)->flag_incomplete)
240 /* FIXME drow/2002-06-03: Only used for methods, but applies as well
243 #define TYPE_VARARGS(t) (TYPE_MAIN_TYPE (t)->flag_varargs)
245 /* Identify a vector type. Gcc is handling this by adding an extra
246 attribute to the array type. We slurp that in as a new flag of a
247 type. This is used only in dwarf2read.c. */
248 #define TYPE_VECTOR(t) (TYPE_MAIN_TYPE (t)->flag_vector)
250 /* The debugging formats (especially STABS) do not contain enough information
251 to represent all Ada types---especially those whose size depends on
252 dynamic quantities. Therefore, the GNAT Ada compiler includes
253 extra information in the form of additional type definitions
254 connected by naming conventions. This flag indicates that the
255 type is an ordinary (unencoded) GDB type that has been created from
256 the necessary run-time information, and does not need further
257 interpretation. Optionally marks ordinary, fixed-size GDB type. */
259 #define TYPE_FIXED_INSTANCE(t) (TYPE_MAIN_TYPE (t)->flag_fixed_instance)
261 /* This debug target supports TYPE_STUB(t). In the unsupported case we have to
262 rely on NFIELDS to be zero etc., see TYPE_IS_OPAQUE ().
263 TYPE_STUB(t) with !TYPE_STUB_SUPPORTED(t) may exist if we only guessed
264 the TYPE_STUB(t) value (see dwarfread.c). */
266 #define TYPE_STUB_SUPPORTED(t) (TYPE_MAIN_TYPE (t)->flag_stub_supported)
268 /* Not textual. By default, GDB treats all single byte integers as
269 characters (or elements of strings) unless this flag is set. */
271 #define TYPE_NOTTEXT(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_NOTTEXT)
273 /* Used only for TYPE_CODE_FUNC where it specifies the real function
274 address is returned by this function call. TYPE_TARGET_TYPE determines the
275 final returned function type to be presented to user. */
277 #define TYPE_GNU_IFUNC(t) (TYPE_MAIN_TYPE (t)->flag_gnu_ifunc)
279 /* Type owner. If TYPE_OBJFILE_OWNED is true, the type is owned by
280 the objfile retrieved as TYPE_OBJFILE. Otherweise, the type is
281 owned by an architecture; TYPE_OBJFILE is NULL in this case. */
283 #define TYPE_OBJFILE_OWNED(t) (TYPE_MAIN_TYPE (t)->flag_objfile_owned)
284 #define TYPE_OWNER(t) TYPE_MAIN_TYPE(t)->owner
285 #define TYPE_OBJFILE(t) (TYPE_OBJFILE_OWNED(t)? TYPE_OWNER(t).objfile : NULL)
287 /* True if this type was declared using the "class" keyword. This is
288 only valid for C++ structure types, and only used for displaying
289 the type. If false, the structure was declared as a "struct". */
291 #define TYPE_DECLARED_CLASS(t) (TYPE_MAIN_TYPE (t)->flag_declared_class)
293 /* Constant type. If this is set, the corresponding type has a
296 #define TYPE_CONST(t) (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CONST)
298 /* Volatile type. If this is set, the corresponding type has a
299 volatile modifier. */
301 #define TYPE_VOLATILE(t) \
302 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_VOLATILE)
304 /* Instruction-space delimited type. This is for Harvard architectures
305 which have separate instruction and data address spaces (and perhaps
308 GDB usually defines a flat address space that is a superset of the
309 architecture's two (or more) address spaces, but this is an extension
310 of the architecture's model.
312 If TYPE_FLAG_INST is set, an object of the corresponding type
313 resides in instruction memory, even if its address (in the extended
314 flat address space) does not reflect this.
316 Similarly, if TYPE_FLAG_DATA is set, then an object of the
317 corresponding type resides in the data memory space, even if
318 this is not indicated by its (flat address space) address.
320 If neither flag is set, the default space for functions / methods
321 is instruction space, and for data objects is data memory. */
323 #define TYPE_CODE_SPACE(t) \
324 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_CODE_SPACE)
326 #define TYPE_DATA_SPACE(t) \
327 (TYPE_INSTANCE_FLAGS (t) & TYPE_INSTANCE_FLAG_DATA_SPACE)
329 /* Address class flags. Some environments provide for pointers whose
330 size is different from that of a normal pointer or address types
331 where the bits are interpreted differently than normal addresses. The
332 TYPE_FLAG_ADDRESS_CLASS_n flags may be used in target specific
333 ways to represent these different types of address classes. */
334 #define TYPE_ADDRESS_CLASS_1(t) (TYPE_INSTANCE_FLAGS(t) \
335 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
336 #define TYPE_ADDRESS_CLASS_2(t) (TYPE_INSTANCE_FLAGS(t) \
337 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
338 #define TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL \
339 (TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1 | TYPE_INSTANCE_FLAG_ADDRESS_CLASS_2)
340 #define TYPE_ADDRESS_CLASS_ALL(t) (TYPE_INSTANCE_FLAGS(t) \
341 & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL)
343 /* Determine which field of the union main_type.fields[x].loc is used. */
347 FIELD_LOC_KIND_BITPOS, /* bitpos */
348 FIELD_LOC_KIND_PHYSADDR, /* physaddr */
349 FIELD_LOC_KIND_PHYSNAME, /* physname */
350 FIELD_LOC_KIND_DWARF_BLOCK /* dwarf_block */
353 /* A discriminant to determine which field in the main_type.type_specific
354 union is being used, if any.
356 For types such as TYPE_CODE_FLT or TYPE_CODE_FUNC, the use of this
357 discriminant is really redundant, as we know from the type code
358 which field is going to be used. As such, it would be possible to
359 reduce the size of this enum in order to save a bit or two for
360 other fields of struct main_type. But, since we still have extra
361 room , and for the sake of clarity and consistency, we treat all fields
362 of the union the same way. */
364 enum type_specific_kind
367 TYPE_SPECIFIC_CPLUS_STUFF,
368 TYPE_SPECIFIC_GNAT_STUFF,
369 TYPE_SPECIFIC_FLOATFORMAT,
373 /* This structure is space-critical.
374 Its layout has been tweaked to reduce the space used. */
378 /* Code for kind of type. */
380 ENUM_BITFIELD(type_code) code : 8;
382 /* Flags about this type. These fields appear at this location
383 because they packs nicely here. See the TYPE_* macros for
384 documentation about these fields. */
386 unsigned int flag_unsigned : 1;
387 unsigned int flag_nosign : 1;
388 unsigned int flag_stub : 1;
389 unsigned int flag_target_stub : 1;
390 unsigned int flag_static : 1;
391 unsigned int flag_prototyped : 1;
392 unsigned int flag_incomplete : 1;
393 unsigned int flag_varargs : 1;
394 unsigned int flag_vector : 1;
395 unsigned int flag_stub_supported : 1;
396 unsigned int flag_gnu_ifunc : 1;
397 unsigned int flag_fixed_instance : 1;
398 unsigned int flag_objfile_owned : 1;
399 /* True if this type was declared with "class" rather than
401 unsigned int flag_declared_class : 1;
403 /* A discriminant telling us which field of the type_specific union
404 is being used for this type, if any. */
405 ENUM_BITFIELD(type_specific_kind) type_specific_field : 3;
407 /* Number of fields described for this type. This field appears at
408 this location because it packs nicely here. */
412 /* Field number of the virtual function table pointer in
413 VPTR_BASETYPE. If -1, we were unable to find the virtual
414 function table pointer in initial symbol reading, and
415 get_vptr_fieldno should be called to find it if possible.
416 get_vptr_fieldno will update this field if possible.
417 Otherwise the value is left at -1.
419 Unused if this type does not have virtual functions.
421 This field appears at this location because it packs nicely here. */
425 /* Name of this type, or NULL if none.
427 This is used for printing only, except by poorly designed C++ code.
428 For looking up a name, look for a symbol in the VAR_DOMAIN. */
432 /* Tag name for this type, or NULL if none. This means that the
433 name of the type consists of a keyword followed by the tag name.
434 Which keyword is determined by the type code ("struct" for
435 TYPE_CODE_STRUCT, etc.). As far as I know C/C++ are the only languages
438 This is used for printing only, except by poorly designed C++ code.
439 For looking up a name, look for a symbol in the STRUCT_DOMAIN.
440 One more legitimate use is that if TYPE_FLAG_STUB is set, this is
441 the name to use to look for definitions in other files. */
445 /* Every type is now associated with a particular objfile, and the
446 type is allocated on the objfile_obstack for that objfile. One problem
447 however, is that there are times when gdb allocates new types while
448 it is not in the process of reading symbols from a particular objfile.
449 Fortunately, these happen when the type being created is a derived
450 type of an existing type, such as in lookup_pointer_type(). So
451 we can just allocate the new type using the same objfile as the
452 existing type, but to do this we need a backpointer to the objfile
453 from the existing type. Yes this is somewhat ugly, but without
454 major overhaul of the internal type system, it can't be avoided
459 struct objfile *objfile;
460 struct gdbarch *gdbarch;
463 /* For a pointer type, describes the type of object pointed to.
464 For an array type, describes the type of the elements.
465 For a function or method type, describes the type of the return value.
466 For a range type, describes the type of the full range.
467 For a complex type, describes the type of each coordinate.
468 For a special record or union type encoding a dynamic-sized type
469 in GNAT, a memoized pointer to a corresponding static version of
473 struct type *target_type;
475 /* For structure and union types, a description of each field.
476 For set and pascal array types, there is one "field",
477 whose type is the domain type of the set or array.
478 For range types, there are two "fields",
479 the minimum and maximum values (both inclusive).
480 For enum types, each possible value is described by one "field".
481 For a function or method type, a "field" for each parameter.
482 For C++ classes, there is one field for each base class (if it is
483 a derived class) plus one field for each class data member. Member
484 functions are recorded elsewhere.
486 Using a pointer to a separate array of fields
487 allows all types to have the same size, which is useful
488 because we can allocate the space for a type before
489 we know what to put in it. */
497 /* Position of this field, counting in bits from start of
498 containing structure. For gdbarch_bits_big_endian=1
499 targets, it is the bit offset to the MSB. For
500 gdbarch_bits_big_endian=0 targets, it is the bit offset to
501 the LSB. For a range bound or enum value, this is the
506 /* For a static field, if TYPE_FIELD_STATIC_HAS_ADDR then physaddr
507 is the location (in the target) of the static field.
508 Otherwise, physname is the mangled label of the static field. */
511 const char *physname;
513 /* The field location can be computed by evaluating the following DWARF
514 block. Its DATA is allocated on objfile_obstack - no CU load is
515 needed to access it. */
517 struct dwarf2_locexpr_baton *dwarf_block;
521 /* For a function or member type, this is 1 if the argument is marked
522 artificial. Artificial arguments should not be shown to the
523 user. For TYPE_CODE_RANGE it is set if the specific bound is not
525 unsigned int artificial : 1;
527 /* Discriminant for union field_location. */
528 ENUM_BITFIELD(field_loc_kind) loc_kind : 2;
530 /* Size of this field, in bits, or zero if not packed.
531 If non-zero in an array type, indicates the element size in
532 bits (used only in Ada at the moment).
533 For an unpacked field, the field's type's length
534 says how many bytes the field occupies. */
536 unsigned int bitsize : 29;
538 /* In a struct or union type, type of this field.
539 In a function or member type, type of this argument.
540 In an array type, the domain-type of the array. */
544 /* Name of field, value or argument.
545 NULL for range bounds, array domains, and member function
551 /* Union member used for range types. */
555 /* Low bound of range. */
559 /* High bound of range. */
563 /* Flags indicating whether the values of low and high are
564 valid. When true, the respective range value is
565 undefined. Currently used only for FORTRAN arrays. */
574 /* For types with virtual functions (TYPE_CODE_STRUCT), VPTR_BASETYPE
575 is the base class which defined the virtual function table pointer.
577 For types that are pointer to member types (TYPE_CODE_METHODPTR,
578 TYPE_CODE_MEMBERPTR), VPTR_BASETYPE is the type that this pointer
581 For method types (TYPE_CODE_METHOD), VPTR_BASETYPE is the aggregate
582 type that contains the method.
586 struct type *vptr_basetype;
588 /* Slot to point to additional language-specific fields of this type. */
592 /* CPLUS_STUFF is for TYPE_CODE_STRUCT. It is initialized to point to
593 cplus_struct_default, a default static instance of a struct
594 cplus_struct_type. */
596 struct cplus_struct_type *cplus_stuff;
598 /* GNAT_STUFF is for types for which the GNAT Ada compiler
599 provides additional information. */
600 struct gnat_aux_type *gnat_stuff;
602 /* FLOATFORMAT is for TYPE_CODE_FLT. It is a pointer to two
603 floatformat objects that describe the floating-point value
604 that resides within the type. The first is for big endian
605 targets and the second is for little endian targets. */
607 const struct floatformat **floatformat;
609 /* For TYPE_CODE_FUNC types, */
610 struct func_type *func_stuff;
614 /* A ``struct type'' describes a particular instance of a type, with
615 some particular qualification. */
618 /* Type that is a pointer to this type.
619 NULL if no such pointer-to type is known yet.
620 The debugger may add the address of such a type
621 if it has to construct one later. */
623 struct type *pointer_type;
625 /* C++: also need a reference type. */
627 struct type *reference_type;
629 /* Variant chain. This points to a type that differs from this one only
630 in qualifiers and length. Currently, the possible qualifiers are
631 const, volatile, code-space, data-space, and address class. The
632 length may differ only when one of the address class flags are set.
633 The variants are linked in a circular ring and share MAIN_TYPE. */
636 /* Flags specific to this instance of the type, indicating where
639 For TYPE_CODE_TYPEDEF the flags of the typedef type should be binary
640 or-ed with the target type, with a special case for address class and
641 space class. For example if this typedef does not specify any new
642 qualifiers, TYPE_INSTANCE_FLAGS is 0 and the instance flags are
643 completely inherited from the target type. No qualifiers can be cleared
644 by the typedef. See also check_typedef. */
647 /* Length of storage for a value of this type. This is what
648 sizeof(type) would return; use it for address arithmetic,
649 memory reads and writes, etc. This size includes padding. For
650 example, an i386 extended-precision floating point value really
651 only occupies ten bytes, but most ABI's declare its size to be
652 12 bytes, to preserve alignment. A `struct type' representing
653 such a floating-point type would have a `length' value of 12,
654 even though the last two bytes are unused.
656 There's a bit of a host/target mess here, if you're concerned
657 about machines whose bytes aren't eight bits long, or who don't
658 have byte-addressed memory. Various places pass this to memcpy
659 and such, meaning it must be in units of host bytes. Various
660 other places expect they can calculate addresses by adding it
661 and such, meaning it must be in units of target bytes. For
662 some DSP targets, in which HOST_CHAR_BIT will (presumably) be 8
663 and TARGET_CHAR_BIT will be (say) 32, this is a problem.
665 One fix would be to make this field in bits (requiring that it
666 always be a multiple of HOST_CHAR_BIT and TARGET_CHAR_BIT) ---
667 the other choice would be to make it consistently in units of
668 HOST_CHAR_BIT. However, this would still fail to address
669 machines based on a ternary or decimal representation. */
673 /* Core type, shared by a group of qualified types. */
674 struct main_type *main_type;
677 #define NULL_TYPE ((struct type *) 0)
679 /* C++ language-specific information for TYPE_CODE_STRUCT and TYPE_CODE_UNION
682 struct cplus_struct_type
684 /* Number of base classes this type derives from. The baseclasses are
685 stored in the first N_BASECLASSES fields (i.e. the `fields' field of
686 the struct type). I think only the `type' field of such a field has
691 /* Number of methods with unique names. All overloaded methods with
692 the same name count only once. */
696 /* Number of methods described for this type, not including the
697 methods that it derives from. */
699 short nfn_fields_total;
701 /* Number of template arguments. */
702 unsigned short n_template_arguments;
704 /* One if this struct is a dynamic class, as defined by the
705 Itanium C++ ABI: if it requires a virtual table pointer,
706 because it or any of its base classes have one or more virtual
707 member functions or virtual base classes. Minus one if not
708 dynamic. Zero if not yet computed. */
711 /* Non-zero if this type came from a Java CU. */
712 unsigned int is_java : 1;
714 /* For derived classes, the number of base classes is given by
715 n_baseclasses and virtual_field_bits is a bit vector containing
716 one bit per base class. If the base class is virtual, the
717 corresponding bit will be set.
722 class C : public B, public virtual A {};
724 B is a baseclass of C; A is a virtual baseclass for C.
725 This is a C++ 2.0 language feature. */
727 B_TYPE *virtual_field_bits;
729 /* For classes with private fields, the number of fields is given by
730 nfields and private_field_bits is a bit vector containing one bit
732 If the field is private, the corresponding bit will be set. */
734 B_TYPE *private_field_bits;
736 /* For classes with protected fields, the number of fields is given by
737 nfields and protected_field_bits is a bit vector containing one bit
739 If the field is private, the corresponding bit will be set. */
741 B_TYPE *protected_field_bits;
743 /* For classes with fields to be ignored, either this is optimized out
744 or this field has length 0. */
746 B_TYPE *ignore_field_bits;
748 /* For classes, structures, and unions, a description of each field,
749 which consists of an overloaded name, followed by the types of
750 arguments that the method expects, and then the name after it
751 has been renamed to make it distinct.
753 fn_fieldlists points to an array of nfn_fields of these. */
758 /* The overloaded name. */
762 /* The number of methods with this name. */
766 /* The list of methods. */
771 /* If is_stub is clear, this is the mangled name which we can
772 look up to find the address of the method (FIXME: it would
773 be cleaner to have a pointer to the struct symbol here
776 /* If is_stub is set, this is the portion of the mangled
777 name which specifies the arguments. For example, "ii",
778 if there are two int arguments, or "" if there are no
779 arguments. See gdb_mangle_name for the conversion from this
780 format to the one used if is_stub is clear. */
782 const char *physname;
784 /* The function type for the method.
785 (This comment used to say "The return value of the method",
786 but that's wrong. The function type
787 is expected here, i.e. something with TYPE_CODE_FUNC,
788 and *not* the return-value type). */
792 /* For virtual functions.
793 First baseclass that defines this virtual function. */
795 struct type *fcontext;
799 unsigned int is_const:1;
800 unsigned int is_volatile:1;
801 unsigned int is_private:1;
802 unsigned int is_protected:1;
803 unsigned int is_public:1;
804 unsigned int is_abstract:1;
805 unsigned int is_static:1;
806 unsigned int is_final:1;
807 unsigned int is_synchronized:1;
808 unsigned int is_native:1;
809 unsigned int is_artificial:1;
811 /* A stub method only has some fields valid (but they are enough
812 to reconstruct the rest of the fields). */
813 unsigned int is_stub:1;
816 unsigned int dummy:4;
818 /* Index into that baseclass's virtual function table,
819 minus 2; else if static: VOFFSET_STATIC; else: 0. */
821 unsigned int voffset:16;
823 #define VOFFSET_STATIC 1
831 /* Pointer to information about enclosing scope, if this is a
832 local type. If it is not a local type, this is NULL. */
833 struct local_type_info
840 /* typedefs defined inside this class. TYPEDEF_FIELD points to an array of
841 TYPEDEF_FIELD_COUNT elements. */
844 /* Unqualified name to be prefixed by owning class qualified name. */
847 /* Type this typedef named NAME represents. */
851 unsigned typedef_field_count;
853 /* The template arguments. This is an array with
854 N_TEMPLATE_ARGUMENTS elements. This is NULL for non-template
856 struct symbol **template_arguments;
859 /* Struct used in computing virtual base list. */
862 struct type *vbasetype; /* pointer to virtual base */
863 struct vbase *next; /* next in chain */
866 /* Struct used to store conversion rankings. */
871 /* When two conversions are of the same type and therefore have the same
872 rank, subrank is used to differentiate the two.
873 Eg: Two derived-class-pointer to base-class-pointer conversions would
874 both have base pointer conversion rank, but the conversion with the
875 shorter distance to the ancestor is preferable. 'subrank' would be used
880 /* Struct used for ranking a function for overload resolution. */
881 struct badness_vector
887 /* GNAT Ada-specific information for various Ada types. */
890 /* Parallel type used to encode information about dynamic types
891 used in Ada (such as variant records, variable-size array,
893 struct type* descriptive_type;
896 /* For TYPE_CODE_FUNC types, */
899 /* The calling convention for targets supporting multiple ABIs. Right now
900 this is only fetched from the Dwarf-2 DW_AT_calling_convention
902 unsigned calling_convention;
904 /* Only those DW_TAG_GNU_call_site's in this function that have
905 DW_AT_GNU_tail_call set are linked in this list. Function without its
906 tail call list complete (DW_AT_GNU_all_tail_call_sites or its superset
907 DW_AT_GNU_all_call_sites) has TAIL_CALL_LIST NULL, even if some
908 DW_TAG_GNU_call_site's exist in such function. */
909 struct call_site *tail_call_list;
912 /* A place where a function gets called from, represented by
913 DW_TAG_GNU_call_site. It can be looked up from symtab->call_site_htab. */
917 /* Address of the first instruction after this call. It must be the first
918 field as we overload core_addr_hash and core_addr_eq for it. */
921 /* List successor with head in FUNC_TYPE.TAIL_CALL_LIST. */
922 struct call_site *tail_call_next;
924 /* Describe DW_AT_GNU_call_site_target. Missing attribute uses
925 FIELD_LOC_KIND_DWARF_BLOCK with FIELD_DWARF_BLOCK == NULL. */
928 union field_location loc;
930 /* Discriminant for union field_location. */
931 ENUM_BITFIELD(field_loc_kind) loc_kind : 2;
935 /* Size of the PARAMETER array. */
936 unsigned parameter_count;
938 /* CU of the function where the call is located. It gets used for DWARF
939 blocks execution in the parameter array below. */
940 struct dwarf2_per_cu_data *per_cu;
942 /* Describe DW_TAG_GNU_call_site's DW_TAG_formal_parameter. */
943 struct call_site_parameter
945 /* DW_TAG_formal_parameter's DW_AT_location's DW_OP_regX as DWARF
946 register number, for register passed parameters. If -1 then use
950 /* Offset from the callee's frame base, for stack passed parameters.
951 This equals offset from the caller's stack pointer. Valid only if
952 DWARF_REGNUM is -1. */
955 /* DW_TAG_formal_parameter's DW_AT_GNU_call_site_value. It is never
957 const gdb_byte *value;
960 /* DW_TAG_formal_parameter's DW_AT_GNU_call_site_data_value. It may be
961 NULL if not provided by DWARF. */
962 const gdb_byte *data_value;
963 size_t data_value_size;
968 /* The default value of TYPE_CPLUS_SPECIFIC(T) points to the
969 this shared static structure. */
971 extern const struct cplus_struct_type cplus_struct_default;
973 extern void allocate_cplus_struct_type (struct type *);
975 #define INIT_CPLUS_SPECIFIC(type) \
976 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_CPLUS_STUFF, \
977 TYPE_RAW_CPLUS_SPECIFIC (type) = (struct cplus_struct_type*) \
978 &cplus_struct_default)
980 #define ALLOCATE_CPLUS_STRUCT_TYPE(type) allocate_cplus_struct_type (type)
982 #define HAVE_CPLUS_STRUCT(type) \
983 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_CPLUS_STUFF \
984 && TYPE_RAW_CPLUS_SPECIFIC (type) != &cplus_struct_default)
986 extern const struct gnat_aux_type gnat_aux_default;
988 extern void allocate_gnat_aux_type (struct type *);
990 #define INIT_GNAT_SPECIFIC(type) \
991 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_GNAT_STUFF, \
992 TYPE_GNAT_SPECIFIC (type) = (struct gnat_aux_type *) &gnat_aux_default)
993 #define ALLOCATE_GNAT_AUX_TYPE(type) allocate_gnat_aux_type (type)
994 /* A macro that returns non-zero if the type-specific data should be
995 read as "gnat-stuff". */
996 #define HAVE_GNAT_AUX_INFO(type) \
997 (TYPE_SPECIFIC_FIELD (type) == TYPE_SPECIFIC_GNAT_STUFF)
999 #define INIT_FUNC_SPECIFIC(type) \
1000 (TYPE_SPECIFIC_FIELD (type) = TYPE_SPECIFIC_FUNC, \
1001 TYPE_MAIN_TYPE (type)->type_specific.func_stuff \
1002 = TYPE_ZALLOC (type, \
1003 sizeof (*TYPE_MAIN_TYPE (type)->type_specific.func_stuff)))
1005 #define TYPE_INSTANCE_FLAGS(thistype) (thistype)->instance_flags
1006 #define TYPE_MAIN_TYPE(thistype) (thistype)->main_type
1007 #define TYPE_NAME(thistype) TYPE_MAIN_TYPE(thistype)->name
1008 #define TYPE_TAG_NAME(type) TYPE_MAIN_TYPE(type)->tag_name
1009 #define TYPE_TARGET_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->target_type
1010 #define TYPE_POINTER_TYPE(thistype) (thistype)->pointer_type
1011 #define TYPE_REFERENCE_TYPE(thistype) (thistype)->reference_type
1012 #define TYPE_CHAIN(thistype) (thistype)->chain
1013 /* Note that if thistype is a TYPEDEF type, you have to call check_typedef.
1014 But check_typedef does set the TYPE_LENGTH of the TYPEDEF type,
1015 so you only have to call check_typedef once. Since allocate_value
1016 calls check_typedef, TYPE_LENGTH (VALUE_TYPE (X)) is safe. */
1017 #define TYPE_LENGTH(thistype) (thistype)->length
1018 /* Note that TYPE_CODE can be TYPE_CODE_TYPEDEF, so if you want the real
1019 type, you need to do TYPE_CODE (check_type (this_type)). */
1020 #define TYPE_CODE(thistype) TYPE_MAIN_TYPE(thistype)->code
1021 #define TYPE_NFIELDS(thistype) TYPE_MAIN_TYPE(thistype)->nfields
1022 #define TYPE_FIELDS(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields
1024 #define TYPE_INDEX_TYPE(type) TYPE_FIELD_TYPE (type, 0)
1025 #define TYPE_RANGE_DATA(thistype) TYPE_MAIN_TYPE(thistype)->flds_bnds.bounds
1026 #define TYPE_LOW_BOUND(range_type) TYPE_RANGE_DATA(range_type)->low
1027 #define TYPE_HIGH_BOUND(range_type) TYPE_RANGE_DATA(range_type)->high
1028 #define TYPE_LOW_BOUND_UNDEFINED(range_type) \
1029 TYPE_RANGE_DATA(range_type)->low_undefined
1030 #define TYPE_HIGH_BOUND_UNDEFINED(range_type) \
1031 TYPE_RANGE_DATA(range_type)->high_undefined
1033 /* Moto-specific stuff for FORTRAN arrays. */
1035 #define TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED(arraytype) \
1036 TYPE_HIGH_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1037 #define TYPE_ARRAY_LOWER_BOUND_IS_UNDEFINED(arraytype) \
1038 TYPE_LOW_BOUND_UNDEFINED(TYPE_INDEX_TYPE(arraytype))
1040 #define TYPE_ARRAY_UPPER_BOUND_VALUE(arraytype) \
1041 (TYPE_HIGH_BOUND(TYPE_INDEX_TYPE((arraytype))))
1043 #define TYPE_ARRAY_LOWER_BOUND_VALUE(arraytype) \
1044 (TYPE_LOW_BOUND(TYPE_INDEX_TYPE((arraytype))))
1048 #define TYPE_VPTR_BASETYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
1049 #define TYPE_DOMAIN_TYPE(thistype) TYPE_MAIN_TYPE(thistype)->vptr_basetype
1050 #define TYPE_VPTR_FIELDNO(thistype) TYPE_MAIN_TYPE(thistype)->vptr_fieldno
1051 #define TYPE_FN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fields
1052 #define TYPE_NFN_FIELDS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields
1053 #define TYPE_NFN_FIELDS_TOTAL(thistype) TYPE_CPLUS_SPECIFIC(thistype)->nfn_fields_total
1054 #define TYPE_SPECIFIC_FIELD(thistype) \
1055 TYPE_MAIN_TYPE(thistype)->type_specific_field
1056 #define TYPE_TYPE_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific
1057 /* We need this tap-dance with the TYPE_RAW_SPECIFIC because of the case
1058 where we're trying to print an Ada array using the C language.
1059 In that case, there is no "cplus_stuff", but the C language assumes
1060 that there is. What we do, in that case, is pretend that there is
1061 an implicit one which is the default cplus stuff. */
1062 #define TYPE_CPLUS_SPECIFIC(thistype) \
1063 (!HAVE_CPLUS_STRUCT(thistype) \
1064 ? (struct cplus_struct_type*)&cplus_struct_default \
1065 : TYPE_RAW_CPLUS_SPECIFIC(thistype))
1066 #define TYPE_RAW_CPLUS_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.cplus_stuff
1067 #define TYPE_FLOATFORMAT(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.floatformat
1068 #define TYPE_GNAT_SPECIFIC(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.gnat_stuff
1069 #define TYPE_DESCRIPTIVE_TYPE(thistype) TYPE_GNAT_SPECIFIC(thistype)->descriptive_type
1070 #define TYPE_CALLING_CONVENTION(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->calling_convention
1071 #define TYPE_TAIL_CALL_LIST(thistype) TYPE_MAIN_TYPE(thistype)->type_specific.func_stuff->tail_call_list
1072 #define TYPE_BASECLASS(thistype,index) TYPE_FIELD_TYPE(thistype, index)
1073 #define TYPE_N_BASECLASSES(thistype) TYPE_CPLUS_SPECIFIC(thistype)->n_baseclasses
1074 #define TYPE_BASECLASS_NAME(thistype,index) TYPE_FIELD_NAME(thistype, index)
1075 #define TYPE_BASECLASS_BITPOS(thistype,index) TYPE_FIELD_BITPOS(thistype,index)
1076 #define BASETYPE_VIA_PUBLIC(thistype, index) \
1077 ((!TYPE_FIELD_PRIVATE(thistype, index)) && (!TYPE_FIELD_PROTECTED(thistype, index)))
1078 #define TYPE_CPLUS_DYNAMIC(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_dynamic
1079 #define TYPE_CPLUS_REALLY_JAVA(thistype) TYPE_CPLUS_SPECIFIC (thistype)->is_java
1081 #define BASETYPE_VIA_VIRTUAL(thistype, index) \
1082 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1083 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (index)))
1085 #define FIELD_TYPE(thisfld) ((thisfld).type)
1086 #define FIELD_NAME(thisfld) ((thisfld).name)
1087 #define FIELD_LOC_KIND(thisfld) ((thisfld).loc_kind)
1088 #define FIELD_BITPOS(thisfld) ((thisfld).loc.bitpos)
1089 #define FIELD_STATIC_PHYSNAME(thisfld) ((thisfld).loc.physname)
1090 #define FIELD_STATIC_PHYSADDR(thisfld) ((thisfld).loc.physaddr)
1091 #define FIELD_DWARF_BLOCK(thisfld) ((thisfld).loc.dwarf_block)
1092 #define SET_FIELD_BITPOS(thisfld, bitpos) \
1093 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_BITPOS, \
1094 FIELD_BITPOS (thisfld) = (bitpos))
1095 #define SET_FIELD_PHYSNAME(thisfld, name) \
1096 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSNAME, \
1097 FIELD_STATIC_PHYSNAME (thisfld) = (name))
1098 #define SET_FIELD_PHYSADDR(thisfld, addr) \
1099 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_PHYSADDR, \
1100 FIELD_STATIC_PHYSADDR (thisfld) = (addr))
1101 #define SET_FIELD_DWARF_BLOCK(thisfld, addr) \
1102 (FIELD_LOC_KIND (thisfld) = FIELD_LOC_KIND_DWARF_BLOCK, \
1103 FIELD_DWARF_BLOCK (thisfld) = (addr))
1104 #define FIELD_ARTIFICIAL(thisfld) ((thisfld).artificial)
1105 #define FIELD_BITSIZE(thisfld) ((thisfld).bitsize)
1107 #define TYPE_FIELD(thistype, n) TYPE_MAIN_TYPE(thistype)->flds_bnds.fields[n]
1108 #define TYPE_FIELD_TYPE(thistype, n) FIELD_TYPE(TYPE_FIELD(thistype, n))
1109 #define TYPE_FIELD_NAME(thistype, n) FIELD_NAME(TYPE_FIELD(thistype, n))
1110 #define TYPE_FIELD_LOC_KIND(thistype, n) FIELD_LOC_KIND (TYPE_FIELD (thistype, n))
1111 #define TYPE_FIELD_BITPOS(thistype, n) FIELD_BITPOS (TYPE_FIELD (thistype, n))
1112 #define TYPE_FIELD_STATIC_PHYSNAME(thistype, n) FIELD_STATIC_PHYSNAME (TYPE_FIELD (thistype, n))
1113 #define TYPE_FIELD_STATIC_PHYSADDR(thistype, n) FIELD_STATIC_PHYSADDR (TYPE_FIELD (thistype, n))
1114 #define TYPE_FIELD_DWARF_BLOCK(thistype, n) FIELD_DWARF_BLOCK (TYPE_FIELD (thistype, n))
1115 #define TYPE_FIELD_ARTIFICIAL(thistype, n) FIELD_ARTIFICIAL(TYPE_FIELD(thistype,n))
1116 #define TYPE_FIELD_BITSIZE(thistype, n) FIELD_BITSIZE(TYPE_FIELD(thistype,n))
1117 #define TYPE_FIELD_PACKED(thistype, n) (FIELD_BITSIZE(TYPE_FIELD(thistype,n))!=0)
1119 #define TYPE_FIELD_PRIVATE_BITS(thistype) \
1120 TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits
1121 #define TYPE_FIELD_PROTECTED_BITS(thistype) \
1122 TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits
1123 #define TYPE_FIELD_IGNORE_BITS(thistype) \
1124 TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits
1125 #define TYPE_FIELD_VIRTUAL_BITS(thistype) \
1126 TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits
1127 #define SET_TYPE_FIELD_PRIVATE(thistype, n) \
1128 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n))
1129 #define SET_TYPE_FIELD_PROTECTED(thistype, n) \
1130 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n))
1131 #define SET_TYPE_FIELD_IGNORE(thistype, n) \
1132 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n))
1133 #define SET_TYPE_FIELD_VIRTUAL(thistype, n) \
1134 B_SET (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n))
1135 #define TYPE_FIELD_PRIVATE(thistype, n) \
1136 (TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits == NULL ? 0 \
1137 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->private_field_bits, (n)))
1138 #define TYPE_FIELD_PROTECTED(thistype, n) \
1139 (TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits == NULL ? 0 \
1140 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->protected_field_bits, (n)))
1141 #define TYPE_FIELD_IGNORE(thistype, n) \
1142 (TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits == NULL ? 0 \
1143 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->ignore_field_bits, (n)))
1144 #define TYPE_FIELD_VIRTUAL(thistype, n) \
1145 (TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits == NULL ? 0 \
1146 : B_TST(TYPE_CPLUS_SPECIFIC(thistype)->virtual_field_bits, (n)))
1148 #define TYPE_FN_FIELDLISTS(thistype) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists
1149 #define TYPE_FN_FIELDLIST(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n]
1150 #define TYPE_FN_FIELDLIST1(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].fn_fields
1151 #define TYPE_FN_FIELDLIST_NAME(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].name
1152 #define TYPE_FN_FIELDLIST_LENGTH(thistype, n) TYPE_CPLUS_SPECIFIC(thistype)->fn_fieldlists[n].length
1154 #define TYPE_N_TEMPLATE_ARGUMENTS(thistype) \
1155 TYPE_CPLUS_SPECIFIC (thistype)->n_template_arguments
1156 #define TYPE_TEMPLATE_ARGUMENTS(thistype) \
1157 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments
1158 #define TYPE_TEMPLATE_ARGUMENT(thistype, n) \
1159 TYPE_CPLUS_SPECIFIC (thistype)->template_arguments[n]
1161 #define TYPE_FN_FIELD(thisfn, n) (thisfn)[n]
1162 #define TYPE_FN_FIELD_PHYSNAME(thisfn, n) (thisfn)[n].physname
1163 #define TYPE_FN_FIELD_TYPE(thisfn, n) (thisfn)[n].type
1164 #define TYPE_FN_FIELD_ARGS(thisfn, n) TYPE_FIELDS ((thisfn)[n].type)
1165 #define TYPE_FN_FIELD_CONST(thisfn, n) ((thisfn)[n].is_const)
1166 #define TYPE_FN_FIELD_VOLATILE(thisfn, n) ((thisfn)[n].is_volatile)
1167 #define TYPE_FN_FIELD_PRIVATE(thisfn, n) ((thisfn)[n].is_private)
1168 #define TYPE_FN_FIELD_PROTECTED(thisfn, n) ((thisfn)[n].is_protected)
1169 #define TYPE_FN_FIELD_PUBLIC(thisfn, n) ((thisfn)[n].is_public)
1170 #define TYPE_FN_FIELD_STATIC(thisfn, n) ((thisfn)[n].is_static)
1171 #define TYPE_FN_FIELD_FINAL(thisfn, n) ((thisfn)[n].is_final)
1172 #define TYPE_FN_FIELD_SYNCHRONIZED(thisfn, n) ((thisfn)[n].is_synchronized)
1173 #define TYPE_FN_FIELD_NATIVE(thisfn, n) ((thisfn)[n].is_native)
1174 #define TYPE_FN_FIELD_ARTIFICIAL(thisfn, n) ((thisfn)[n].is_artificial)
1175 #define TYPE_FN_FIELD_ABSTRACT(thisfn, n) ((thisfn)[n].is_abstract)
1176 #define TYPE_FN_FIELD_STUB(thisfn, n) ((thisfn)[n].is_stub)
1177 #define TYPE_FN_FIELD_FCONTEXT(thisfn, n) ((thisfn)[n].fcontext)
1178 #define TYPE_FN_FIELD_VOFFSET(thisfn, n) ((thisfn)[n].voffset-2)
1179 #define TYPE_FN_FIELD_VIRTUAL_P(thisfn, n) ((thisfn)[n].voffset > 1)
1180 #define TYPE_FN_FIELD_STATIC_P(thisfn, n) ((thisfn)[n].voffset == VOFFSET_STATIC)
1182 #define TYPE_LOCALTYPE_PTR(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr)
1183 #define TYPE_LOCALTYPE_FILE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->file)
1184 #define TYPE_LOCALTYPE_LINE(thistype) (TYPE_CPLUS_SPECIFIC(thistype)->localtype_ptr->line)
1186 #define TYPE_TYPEDEF_FIELD_ARRAY(thistype) \
1187 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field
1188 #define TYPE_TYPEDEF_FIELD(thistype, n) \
1189 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field[n]
1190 #define TYPE_TYPEDEF_FIELD_NAME(thistype, n) \
1191 TYPE_TYPEDEF_FIELD (thistype, n).name
1192 #define TYPE_TYPEDEF_FIELD_TYPE(thistype, n) \
1193 TYPE_TYPEDEF_FIELD (thistype, n).type
1194 #define TYPE_TYPEDEF_FIELD_COUNT(thistype) \
1195 TYPE_CPLUS_SPECIFIC (thistype)->typedef_field_count
1197 #define TYPE_IS_OPAQUE(thistype) \
1198 (((TYPE_CODE (thistype) == TYPE_CODE_STRUCT) \
1199 || (TYPE_CODE (thistype) == TYPE_CODE_UNION)) \
1200 && (TYPE_NFIELDS (thistype) == 0) \
1201 && (!HAVE_CPLUS_STRUCT (thistype) \
1202 || TYPE_NFN_FIELDS (thistype) == 0) \
1203 && (TYPE_STUB (thistype) || !TYPE_STUB_SUPPORTED (thistype)))
1205 /* A helper macro that returns the name of a type or "unnamed type" if the type
1207 #define TYPE_SAFE_NAME(type) \
1208 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<unnamed type>"))
1210 /* A helper macro that returns the name of an error type. If the type
1211 has a name, it is used; otherwise, a default is used. */
1212 #define TYPE_ERROR_NAME(type) \
1213 (TYPE_NAME (type) ? TYPE_NAME (type) : _("<error type>"))
1217 /* Integral types. */
1219 /* Implicit size/sign (based on the architecture's ABI). */
1220 struct type *builtin_void;
1221 struct type *builtin_char;
1222 struct type *builtin_short;
1223 struct type *builtin_int;
1224 struct type *builtin_long;
1225 struct type *builtin_signed_char;
1226 struct type *builtin_unsigned_char;
1227 struct type *builtin_unsigned_short;
1228 struct type *builtin_unsigned_int;
1229 struct type *builtin_unsigned_long;
1230 struct type *builtin_float;
1231 struct type *builtin_double;
1232 struct type *builtin_long_double;
1233 struct type *builtin_complex;
1234 struct type *builtin_double_complex;
1235 struct type *builtin_string;
1236 struct type *builtin_bool;
1237 struct type *builtin_long_long;
1238 struct type *builtin_unsigned_long_long;
1239 struct type *builtin_decfloat;
1240 struct type *builtin_decdouble;
1241 struct type *builtin_declong;
1243 /* "True" character types.
1244 We use these for the '/c' print format, because c_char is just a
1245 one-byte integral type, which languages less laid back than C
1246 will print as ... well, a one-byte integral type. */
1247 struct type *builtin_true_char;
1248 struct type *builtin_true_unsigned_char;
1250 /* Explicit sizes - see C9X <intypes.h> for naming scheme. The "int0"
1251 is for when an architecture needs to describe a register that has
1253 struct type *builtin_int0;
1254 struct type *builtin_int8;
1255 struct type *builtin_uint8;
1256 struct type *builtin_int16;
1257 struct type *builtin_uint16;
1258 struct type *builtin_int32;
1259 struct type *builtin_uint32;
1260 struct type *builtin_int64;
1261 struct type *builtin_uint64;
1262 struct type *builtin_int128;
1263 struct type *builtin_uint128;
1265 /* Wide character types. */
1266 struct type *builtin_char16;
1267 struct type *builtin_char32;
1269 /* Pointer types. */
1271 /* `pointer to data' type. Some target platforms use an implicitly
1272 {sign,zero} -extended 32-bit ABI pointer on a 64-bit ISA. */
1273 struct type *builtin_data_ptr;
1275 /* `pointer to function (returning void)' type. Harvard
1276 architectures mean that ABI function and code pointers are not
1277 interconvertible. Similarly, since ANSI, C standards have
1278 explicitly said that pointers to functions and pointers to data
1279 are not interconvertible --- that is, you can't cast a function
1280 pointer to void * and back, and expect to get the same value.
1281 However, all function pointer types are interconvertible, so void
1282 (*) () can server as a generic function pointer. */
1283 struct type *builtin_func_ptr;
1285 /* `function returning pointer to function (returning void)' type.
1286 The final void return type is not significant for it. */
1287 struct type *builtin_func_func;
1290 /* Special-purpose types. */
1292 /* This type is used to represent a GDB internal function. */
1293 struct type *internal_fn;
1296 /* Return the type table for the specified architecture. */
1297 extern const struct builtin_type *builtin_type (struct gdbarch *gdbarch);
1300 /* Per-objfile types used by symbol readers. */
1304 /* Basic types based on the objfile architecture. */
1305 struct type *builtin_void;
1306 struct type *builtin_char;
1307 struct type *builtin_short;
1308 struct type *builtin_int;
1309 struct type *builtin_long;
1310 struct type *builtin_long_long;
1311 struct type *builtin_signed_char;
1312 struct type *builtin_unsigned_char;
1313 struct type *builtin_unsigned_short;
1314 struct type *builtin_unsigned_int;
1315 struct type *builtin_unsigned_long;
1316 struct type *builtin_unsigned_long_long;
1317 struct type *builtin_float;
1318 struct type *builtin_double;
1319 struct type *builtin_long_double;
1321 /* This type is used to represent symbol addresses. */
1322 struct type *builtin_core_addr;
1324 /* This type represents a type that was unrecognized in symbol read-in. */
1325 struct type *builtin_error;
1327 /* Types used for symbols with no debug information. */
1328 struct type *nodebug_text_symbol;
1329 struct type *nodebug_text_gnu_ifunc_symbol;
1330 struct type *nodebug_got_plt_symbol;
1331 struct type *nodebug_data_symbol;
1332 struct type *nodebug_unknown_symbol;
1333 struct type *nodebug_tls_symbol;
1336 /* Return the type table for the specified objfile. */
1337 extern const struct objfile_type *objfile_type (struct objfile *objfile);
1340 /* Explicit floating-point formats. See "floatformat.h". */
1341 extern const struct floatformat *floatformats_ieee_half[BFD_ENDIAN_UNKNOWN];
1342 extern const struct floatformat *floatformats_ieee_single[BFD_ENDIAN_UNKNOWN];
1343 extern const struct floatformat *floatformats_ieee_double[BFD_ENDIAN_UNKNOWN];
1344 extern const struct floatformat *floatformats_ieee_double_littlebyte_bigword[BFD_ENDIAN_UNKNOWN];
1345 extern const struct floatformat *floatformats_i387_ext[BFD_ENDIAN_UNKNOWN];
1346 extern const struct floatformat *floatformats_m68881_ext[BFD_ENDIAN_UNKNOWN];
1347 extern const struct floatformat *floatformats_arm_ext[BFD_ENDIAN_UNKNOWN];
1348 extern const struct floatformat *floatformats_ia64_spill[BFD_ENDIAN_UNKNOWN];
1349 extern const struct floatformat *floatformats_ia64_quad[BFD_ENDIAN_UNKNOWN];
1350 extern const struct floatformat *floatformats_vax_f[BFD_ENDIAN_UNKNOWN];
1351 extern const struct floatformat *floatformats_vax_d[BFD_ENDIAN_UNKNOWN];
1352 extern const struct floatformat *floatformats_ibm_long_double[BFD_ENDIAN_UNKNOWN];
1355 /* Allocate space for storing data associated with a particular type.
1356 We ensure that the space is allocated using the same mechanism that
1357 was used to allocate the space for the type structure itself. I.e.
1358 if the type is on an objfile's objfile_obstack, then the space for data
1359 associated with that type will also be allocated on the objfile_obstack.
1360 If the type is not associated with any particular objfile (such as
1361 builtin types), then the data space will be allocated with xmalloc,
1362 the same as for the type structure. */
1364 #define TYPE_ALLOC(t,size) \
1365 (TYPE_OBJFILE_OWNED (t) \
1366 ? obstack_alloc (&TYPE_OBJFILE (t) -> objfile_obstack, size) \
1369 #define TYPE_ZALLOC(t,size) \
1370 (TYPE_OBJFILE_OWNED (t) \
1371 ? memset (obstack_alloc (&TYPE_OBJFILE (t)->objfile_obstack, size), \
1375 /* Use alloc_type to allocate a type owned by an objfile.
1376 Use alloc_type_arch to allocate a type owned by an architecture.
1377 Use alloc_type_copy to allocate a type with the same owner as a
1378 pre-existing template type, no matter whether objfile or gdbarch. */
1379 extern struct type *alloc_type (struct objfile *);
1380 extern struct type *alloc_type_arch (struct gdbarch *);
1381 extern struct type *alloc_type_copy (const struct type *);
1383 /* Return the type's architecture. For types owned by an architecture,
1384 that architecture is returned. For types owned by an objfile, that
1385 objfile's architecture is returned. */
1386 extern struct gdbarch *get_type_arch (const struct type *);
1388 /* Helper function to construct objfile-owned types. */
1389 extern struct type *init_type (enum type_code, int, int, char *,
1392 /* Helper functions to construct architecture-owned types. */
1393 extern struct type *arch_type (struct gdbarch *, enum type_code, int, char *);
1394 extern struct type *arch_integer_type (struct gdbarch *, int, int, char *);
1395 extern struct type *arch_character_type (struct gdbarch *, int, int, char *);
1396 extern struct type *arch_boolean_type (struct gdbarch *, int, int, char *);
1397 extern struct type *arch_float_type (struct gdbarch *, int, char *,
1398 const struct floatformat **);
1399 extern struct type *arch_complex_type (struct gdbarch *, char *,
1402 /* Helper functions to construct a struct or record type. An
1403 initially empty type is created using arch_composite_type().
1404 Fields are then added using append_composite_type_field*(). A union
1405 type has its size set to the largest field. A struct type has each
1406 field packed against the previous. */
1408 extern struct type *arch_composite_type (struct gdbarch *gdbarch,
1409 char *name, enum type_code code);
1410 extern void append_composite_type_field (struct type *t, char *name,
1411 struct type *field);
1412 extern void append_composite_type_field_aligned (struct type *t,
1416 struct field *append_composite_type_field_raw (struct type *t, char *name,
1417 struct type *field);
1419 /* Helper functions to construct a bit flags type. An initially empty
1420 type is created using arch_flag_type(). Flags are then added using
1421 append_flag_type_flag(). */
1422 extern struct type *arch_flags_type (struct gdbarch *gdbarch,
1423 char *name, int length);
1424 extern void append_flags_type_flag (struct type *type, int bitpos, char *name);
1426 extern void make_vector_type (struct type *array_type);
1427 extern struct type *init_vector_type (struct type *elt_type, int n);
1429 extern struct type *lookup_reference_type (struct type *);
1431 extern struct type *make_reference_type (struct type *, struct type **);
1433 extern struct type *make_cv_type (int, int, struct type *, struct type **);
1435 extern void replace_type (struct type *, struct type *);
1437 extern int address_space_name_to_int (struct gdbarch *, char *);
1439 extern const char *address_space_int_to_name (struct gdbarch *, int);
1441 extern struct type *make_type_with_address_space (struct type *type,
1442 int space_identifier);
1444 extern struct type *lookup_memberptr_type (struct type *, struct type *);
1446 extern struct type *lookup_methodptr_type (struct type *);
1448 extern void smash_to_method_type (struct type *type, struct type *domain,
1449 struct type *to_type, struct field *args,
1450 int nargs, int varargs);
1452 extern void smash_to_memberptr_type (struct type *, struct type *,
1455 extern void smash_to_methodptr_type (struct type *, struct type *);
1457 extern struct type *allocate_stub_method (struct type *);
1459 extern char *type_name_no_tag (const struct type *);
1461 extern const char *type_name_no_tag_or_error (struct type *type);
1463 extern struct type *lookup_struct_elt_type (struct type *, char *, int);
1465 extern struct type *make_pointer_type (struct type *, struct type **);
1467 extern struct type *lookup_pointer_type (struct type *);
1469 extern struct type *make_function_type (struct type *, struct type **);
1471 extern struct type *lookup_function_type (struct type *);
1473 extern struct type *create_range_type (struct type *, struct type *, LONGEST,
1476 extern struct type *create_array_type (struct type *, struct type *,
1478 extern struct type *lookup_array_range_type (struct type *, int, int);
1480 extern struct type *create_string_type (struct type *, struct type *,
1482 extern struct type *lookup_string_range_type (struct type *, int, int);
1484 extern struct type *create_set_type (struct type *, struct type *);
1486 extern struct type *lookup_unsigned_typename (const struct language_defn *,
1487 struct gdbarch *,char *);
1489 extern struct type *lookup_signed_typename (const struct language_defn *,
1490 struct gdbarch *,char *);
1492 extern struct type *check_typedef (struct type *);
1494 #define CHECK_TYPEDEF(TYPE) \
1496 (TYPE) = check_typedef (TYPE); \
1499 extern void check_stub_method_group (struct type *, int);
1501 extern char *gdb_mangle_name (struct type *, int, int);
1503 extern struct type *lookup_typename (const struct language_defn *,
1504 struct gdbarch *, const char *,
1505 const struct block *, int);
1507 extern struct type *lookup_template_type (char *, struct type *,
1510 extern int get_vptr_fieldno (struct type *, struct type **);
1512 extern int get_discrete_bounds (struct type *, LONGEST *, LONGEST *);
1514 extern int get_array_bounds (struct type *type, LONGEST *low_bound,
1515 LONGEST *high_bound);
1517 extern int class_types_same_p (const struct type *, const struct type *);
1519 extern int is_ancestor (struct type *, struct type *);
1521 extern int is_public_ancestor (struct type *, struct type *);
1523 extern int is_unique_ancestor (struct type *, struct value *);
1525 /* Overload resolution */
1527 #define LENGTH_MATCH(bv) ((bv)->rank[0])
1529 /* Badness if parameter list length doesn't match arg list length. */
1530 extern const struct rank LENGTH_MISMATCH_BADNESS;
1532 /* Dummy badness value for nonexistent parameter positions. */
1533 extern const struct rank TOO_FEW_PARAMS_BADNESS;
1534 /* Badness if no conversion among types. */
1535 extern const struct rank INCOMPATIBLE_TYPE_BADNESS;
1537 /* Badness of an exact match. */
1538 extern const struct rank EXACT_MATCH_BADNESS;
1540 /* Badness of integral promotion. */
1541 extern const struct rank INTEGER_PROMOTION_BADNESS;
1542 /* Badness of floating promotion. */
1543 extern const struct rank FLOAT_PROMOTION_BADNESS;
1544 /* Badness of converting a derived class pointer
1545 to a base class pointer. */
1546 extern const struct rank BASE_PTR_CONVERSION_BADNESS;
1547 /* Badness of integral conversion. */
1548 extern const struct rank INTEGER_CONVERSION_BADNESS;
1549 /* Badness of floating conversion. */
1550 extern const struct rank FLOAT_CONVERSION_BADNESS;
1551 /* Badness of integer<->floating conversions. */
1552 extern const struct rank INT_FLOAT_CONVERSION_BADNESS;
1553 /* Badness of conversion of pointer to void pointer. */
1554 extern const struct rank VOID_PTR_CONVERSION_BADNESS;
1555 /* Badness of conversion of pointer to boolean. */
1556 extern const struct rank BOOL_PTR_CONVERSION_BADNESS;
1557 /* Badness of converting derived to base class. */
1558 extern const struct rank BASE_CONVERSION_BADNESS;
1559 /* Badness of converting from non-reference to reference. */
1560 extern const struct rank REFERENCE_CONVERSION_BADNESS;
1561 /* Badness of converting integer 0 to NULL pointer. */
1562 extern const struct rank NULL_POINTER_CONVERSION;
1564 /* Non-standard conversions allowed by the debugger */
1565 /* Converting a pointer to an int is usually OK. */
1566 extern const struct rank NS_POINTER_CONVERSION_BADNESS;
1569 extern struct rank sum_ranks (struct rank a, struct rank b);
1570 extern int compare_ranks (struct rank a, struct rank b);
1572 extern int compare_badness (struct badness_vector *, struct badness_vector *);
1574 extern struct badness_vector *rank_function (struct type **, int,
1575 struct value **, int);
1577 extern struct rank rank_one_type (struct type *, struct type *,
1580 extern void recursive_dump_type (struct type *, int);
1582 extern int field_is_static (struct field *);
1586 extern void print_scalar_formatted (const void *, struct type *,
1587 const struct value_print_options *,
1588 int, struct ui_file *);
1590 extern int can_dereference (struct type *);
1592 extern int is_integral_type (struct type *);
1594 extern int is_scalar_type_recursive (struct type *);
1596 extern void maintenance_print_type (char *, int);
1598 extern htab_t create_copied_types_hash (struct objfile *objfile);
1600 extern struct type *copy_type_recursive (struct objfile *objfile,
1602 htab_t copied_types);
1604 extern struct type *copy_type (const struct type *type);
1606 #endif /* GDBTYPES_H */